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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkextendedlayout.h"
  31 #include "gtkmain.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtkprivate.h"
  48 #include "gtkalias.h"
  49
  50 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  51 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  52 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  53 #define SCROLL_EDGE_SIZE 15
  54 #define EXPANDER_EXTRA_PADDING 4
  55 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  56 #define AUTO_EXPAND_TIMEOUT 500
  57
  58 /* The "background" areas of all rows/cells add up to cover the entire tree.
  59  * The background includes all inter-row and inter-cell spacing.
  60  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  61  * i.e. just the cells, no spacing.
  62  */
  63
  64 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  65 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  66
  67 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  68  * vice versa.
  69  */
  70 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  71 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  72
  73 /* This is in bin_window coordinates */
  74 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  75 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  76
  77 #define ROW_HEIGHT(tree_view,height) \
  78   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  79
  80
  81 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  82 struct _GtkTreeViewChild
  83 {
  84   GtkWidget *widget;
  85   gint x;
  86   gint y;
  87   gint width;
  88   gint height;
  89 };
  90
  91
  92 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  93 struct _TreeViewDragInfo
  94 {
  95   GdkModifierType start_button_mask;
  96   GtkTargetList *_unused_source_target_list;
  97   GdkDragAction source_actions;
  98
  99   GtkTargetList *_unused_dest_target_list;
 100
 101   guint source_set : 1;
 102   guint dest_set : 1;
 103 };
 104
 105
 106 /* Signals */
 107 enum
 108 {
 109   ROW_ACTIVATED,
 110   TEST_EXPAND_ROW,
 111   TEST_COLLAPSE_ROW,
 112   ROW_EXPANDED,
 113   ROW_COLLAPSED,
 114   COLUMNS_CHANGED,
 115   CURSOR_CHANGED,
 116   MOVE_CURSOR,
 117   SELECT_ALL,
 118   UNSELECT_ALL,
 119   SELECT_CURSOR_ROW,
 120   TOGGLE_CURSOR_ROW,
 121   EXPAND_COLLAPSE_CURSOR_ROW,
 122   SELECT_CURSOR_PARENT,
 123   START_INTERACTIVE_SEARCH,
 124   LAST_SIGNAL
 125 };
 126
 127 /* Properties */
 128 enum {
 129   PROP_0,
 130   PROP_MODEL,
 131   PROP_HADJUSTMENT,
 132   PROP_VADJUSTMENT,
 133   PROP_HEADERS_VISIBLE,
 134   PROP_HEADERS_CLICKABLE,
 135   PROP_EXPANDER_COLUMN,
 136   PROP_REORDERABLE,
 137   PROP_RULES_HINT,
 138   PROP_ENABLE_SEARCH,
 139   PROP_SEARCH_COLUMN,
 140   PROP_FIXED_HEIGHT_MODE,
 141   PROP_HOVER_SELECTION,
 142   PROP_HOVER_EXPAND,
 143   PROP_SHOW_EXPANDERS,
 144   PROP_LEVEL_INDENTATION,
 145   PROP_RUBBER_BANDING,
 146   PROP_ENABLE_GRID_LINES,
 147   PROP_ENABLE_TREE_LINES,
 148   PROP_TOOLTIP_COLUMN
 149 };
 150
 151 /* object signals */
 152 static void     gtk_tree_view_finalize             (GObject          *object);
 153 static void     gtk_tree_view_set_property         (GObject         *object,
 154                                                     guint            prop_id,
 155                                                     const GValue    *value,
 156                                                     GParamSpec      *pspec);
 157 static void     gtk_tree_view_get_property         (GObject         *object,
 158                                                     guint            prop_id,
 159                                                     GValue          *value,
 160                                                     GParamSpec      *pspec);
 161
 162 /* gtkobject signals */
 163 static void     gtk_tree_view_destroy              (GtkObject        *object);
 164
 165 /* gtkwidget signals */
 166 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 167 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 168 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 169 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 170                                                     GtkRequisition   *requisition);
 171 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 172                                                     GtkAllocation    *allocation);
 173 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 174                                                     GdkEventExpose   *event);
 175 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 176                                                     GdkEventKey      *event);
 177 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 178                                                     GdkEventKey      *event);
 179 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 180                                                     GdkEventMotion   *event);
 181 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 182                                                     GdkEventCrossing *event);
 183 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 184                                                     GdkEventCrossing *event);
 185 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 186                                                     GdkEventButton   *event);
 187 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 188                                                     GdkEventButton   *event);
 189 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 190                                                     GdkEventGrabBroken *event);
 191 #if 0
 192 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 193                                                     GdkEventConfigure *event);
 194 #endif
 195
 196 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 197                                                     GtkWidget        *child);
 198 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 199                                                     GdkEventFocus    *event);
 200 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 201                                                     GtkDirectionType  direction);
 202 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 203 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 204                                                     GtkStyle         *previous_style);
 205 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 206                                                     gboolean          was_grabbed);
 207 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 208                                                     GtkStateType      previous_state);
 209
 210 /* container signals */
 211 static void     gtk_tree_view_remove               (GtkContainer     *container,
 212                                                     GtkWidget        *widget);
 213 static void     gtk_tree_view_forall               (GtkContainer     *container,
 214                                                     gboolean          include_internals,
 215                                                     GtkCallback       callback,
 216                                                     gpointer          callback_data);
 217
 218 /* Source side drag signals */
 219 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 220                                             GdkDragContext   *context);
 221 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 222                                             GdkDragContext   *context);
 223 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 224                                             GdkDragContext   *context,
 225                                             GtkSelectionData *selection_data,
 226                                             guint             info,
 227                                             guint             time);
 228 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 229                                             GdkDragContext   *context);
 230
 231 /* Target side drag signals */
 232 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 233                                                   GdkDragContext   *context,
 234                                                   guint             time);
 235 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 236                                                   GdkDragContext   *context,
 237                                                   gint              x,
 238                                                   gint              y,
 239                                                   guint             time);
 240 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 241                                                   GdkDragContext   *context,
 242                                                   gint              x,
 243                                                   gint              y,
 244                                                   guint             time);
 245 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 246                                                   GdkDragContext   *context,
 247                                                   gint              x,
 248                                                   gint              y,
 249                                                   GtkSelectionData *selection_data,
 250                                                   guint             info,
 251                                                   guint             time);
 252
 253 /* tree_model signals */
 254 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 255                                                            GtkAdjustment   *hadj,
 256                                                            GtkAdjustment   *vadj);
 257 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 258                                                            GtkMovementStep  step,
 259                                                            gint             count);
 260 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 262 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 263                                                            gboolean         start_editing);
 264 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 265 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 266                                                                gboolean         logical,
 267                                                                gboolean         expand,
 268                                                                gboolean         open_all);
 269 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 270 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 271                                                            GtkTreePath     *path,
 272                                                            GtkTreeIter     *iter,
 273                                                            gpointer         data);
 274 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 275                                                            GtkTreePath     *path,
 276                                                            GtkTreeIter     *iter,
 277                                                            gpointer         data);
 278 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 279                                                            GtkTreePath     *path,
 280                                                            GtkTreeIter     *iter,
 281                                                            gpointer         data);
 282 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 283                                                            GtkTreePath     *path,
 284                                                            gpointer         data);
 285 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 286                                                            GtkTreePath     *parent,
 287                                                            GtkTreeIter     *iter,
 288                                                            gint            *new_order,
 289                                                            gpointer         data);
 290
 291 /* Incremental reflow */
 292 static gboolean validate_row             (GtkTreeView *tree_view,
 293                                           GtkRBTree   *tree,
 294                                           GtkRBNode   *node,
 295                                           GtkTreeIter *iter,
 296                                           GtkTreePath *path);
 297 static void     validate_visible_area    (GtkTreeView *tree_view);
 298 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 299 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 300                                           gboolean     size_request);
 301 static gboolean validate_rows            (GtkTreeView *tree_view);
 302 static gboolean presize_handler_callback (gpointer     data);
 303 static void     install_presize_handler  (GtkTreeView *tree_view);
 304 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 305 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 306                                              GtkTreePath *path,
 307                                              gint         offset);
 308 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 309 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 310 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 311
 312 /* Internal functions */
 313 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 314                                                               GtkTreeViewColumn  *column);
 315 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 316                                                               guint               keyval,
 317                                                               guint               modmask,
 318                                                               gboolean            add_shifted_binding,
 319                                                               GtkMovementStep     step,
 320                                                               gint                count);
 321 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 322                                                               GtkRBTree          *tree);
 323 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 324                                                               GtkTreePath        *path,
 325                                                               const GdkRectangle *clip_rect);
 326 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 327                                                               GtkRBTree          *tree,
 328                                                               GtkRBNode          *node,
 329                                                               const GdkRectangle *clip_rect);
 330 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 331                                                               GtkRBTree          *tree,
 332                                                               GtkRBNode          *node,
 333                                                               gint                x,
 334                                                               gint                y);
 335 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 336                                                               GtkRBTree          *tree,
 337                                                               gint               *x1,
 338                                                               gint               *x2);
 339 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 340                                                               gint                i,
 341                                                               gint               *x);
 342 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 343                                                               GtkTreeView        *tree_view);
 344 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 345                                                               GtkRBTree          *tree,
 346                                                               GtkTreeIter        *iter,
 347                                                               gint                depth,
 348                                                               gboolean            recurse);
 349 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 350                                                               GtkRBTree          *tree,
 351                                                               GtkRBNode          *node);
 352 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 353                                                               GtkTreeViewColumn  *column,
 354                                                               gboolean            focus_to_cell);
 355 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 356                                                               GdkEventMotion     *event);
 357 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 358 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 359                                                               gint                count);
 360 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 361                                                               gint                count);
 362 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 363                                                               gint                count);
 364 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 365                                                               gint                count);
 366 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 367                                                               GtkTreePath        *path,
 368                                                               GtkRBTree          *tree,
 369                                                               GtkRBNode          *node,
 370                                                               gboolean            animate);
 371 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 372                                                               GtkTreePath        *path,
 373                                                               GtkRBTree          *tree,
 374                                                               GtkRBNode          *node,
 375                                                               gboolean            open_all,
 376                                                               gboolean            animate);
 377 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 378                                                               GtkTreePath        *path,
 379                                                               gboolean            clear_and_select,
 380                                                               gboolean            clamp_node);
 381 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 382 static void     column_sizing_notify                         (GObject            *object,
 383                                                               GParamSpec         *pspec,
 384                                                               gpointer            data);
 385 static gboolean expand_collapse_timeout                      (gpointer            data);
 386 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 387                                                               GtkRBTree          *tree,
 388                                                               GtkRBNode          *node,
 389                                                               gboolean            expand);
 390 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 391 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 392 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 393 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 394 static void     update_prelight                              (GtkTreeView        *tree_view,
 395                                                               int                 x,
 396                                                               int                 y);
 397
 398 /* interactive search */
 399 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 400 static void     gtk_tree_view_search_dialog_hide     (GtkWidget        *search_dialog,
 401                                                          GtkTreeView      *tree_view);
 402 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 403                                                          GtkWidget        *search_dialog,
 404                                                          gpointer          user_data);
 405 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 406                                                          GtkMenu          *menu,
 407                                                          gpointer          data);
 408 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 409                                                          GtkTreeView      *tree_view);
 410 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 411                                                          GtkTreeView      *tree_view);
 412 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 413 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 414                                                          gpointer          data);
 415 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 416                                                          GdkEventAny      *event,
 417                                                          GtkTreeView      *tree_view);
 418 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 419                                                          GdkEventButton   *event,
 420                                                          GtkTreeView      *tree_view);
 421 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 422                                                          GdkEventScroll   *event,
 423                                                          GtkTreeView      *tree_view);
 424 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 425                                                          GdkEventKey      *event,
 426                                                          GtkTreeView      *tree_view);
 427 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 428                                                          GtkTreeView      *tree_view,
 429                                                          gboolean          up);
 430 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 431                                                          gint              column,
 432                                                          const gchar      *key,
 433                                                          GtkTreeIter      *iter,
 434                                                          gpointer          search_data);
 435 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 436                                                          GtkTreeSelection *selection,
 437                                                          GtkTreeIter      *iter,
 438                                                          const gchar      *text,
 439                                                          gint             *count,
 440                                                          gint              n);
 441 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 442                                                          GtkTreeView      *tree_view);
 443 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 444                                                          GtkWidget        *child_widget,
 445                                                          gint              x,
 446                                                          gint              y,
 447                                                          gint              width,
 448                                                          gint              height);
 449 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 450                                                          GtkTreePath      *cursor_path);
 451 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 452                                               GtkTreeViewColumn *column,
 453                                               GtkTreePath       *path,
 454                                               GtkCellEditable   *cell_editable,
 455                                               GdkRectangle      *cell_area,
 456                                               GdkEvent          *event,
 457                                               guint              flags);
 458 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 459                                                          gboolean     cancel_editing);
 460 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 461                                                              gboolean     keybinding);
 462 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 463 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 464                                                          GtkTreeViewColumn *column,
 465                                                          gint               drop_position);
 466
 467 /* GtkBuildable */
 468 static void gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
 469                                                GtkBuilder  *builder,
 470                                                GObject     *child,
 471                                                const gchar *type);
 472 static void gtk_tree_view_buildable_init      (GtkBuildableIface *iface);
 473 static void gtk_tree_view_extended_layout_init (GtkExtendedLayoutIface *iface);
 474
 475 static gboolean scroll_row_timeout                   (gpointer     data);
 476 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 477 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 478
 479 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 480
 481 \f
 482
 483 /* GType Methods
 484  */
 485
 486 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 487                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 488                                                 gtk_tree_view_buildable_init)
 489                          G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
 490                                                 gtk_tree_view_extended_layout_init))
 491
 492
 493 static void
 494 gtk_tree_view_class_init (GtkTreeViewClass *class)
 495 {
 496   GObjectClass *o_class;
 497   GtkObjectClass *object_class;
 498   GtkWidgetClass *widget_class;
 499   GtkContainerClass *container_class;
 500   GtkBindingSet *binding_set;
 501
 502   binding_set = gtk_binding_set_by_class (class);
 503
 504   o_class = (GObjectClass *) class;
 505   object_class = (GtkObjectClass *) class;
 506   widget_class = (GtkWidgetClass *) class;
 507   container_class = (GtkContainerClass *) class;
 508
 509   /* GObject signals */
 510   o_class->set_property = gtk_tree_view_set_property;
 511   o_class->get_property = gtk_tree_view_get_property;
 512   o_class->finalize = gtk_tree_view_finalize;
 513
 514   /* GtkObject signals */
 515   object_class->destroy = gtk_tree_view_destroy;
 516
 517   /* GtkWidget signals */
 518   widget_class->map = gtk_tree_view_map;
 519   widget_class->realize = gtk_tree_view_realize;
 520   widget_class->unrealize = gtk_tree_view_unrealize;
 521   widget_class->size_request = gtk_tree_view_size_request;
 522   widget_class->size_allocate = gtk_tree_view_size_allocate;
 523   widget_class->button_press_event = gtk_tree_view_button_press;
 524   widget_class->button_release_event = gtk_tree_view_button_release;
 525   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 526   /*widget_class->configure_event = gtk_tree_view_configure;*/
 527   widget_class->motion_notify_event = gtk_tree_view_motion;
 528   widget_class->expose_event = gtk_tree_view_expose;
 529   widget_class->key_press_event = gtk_tree_view_key_press;
 530   widget_class->key_release_event = gtk_tree_view_key_release;
 531   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 532   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 533   widget_class->focus_out_event = gtk_tree_view_focus_out;
 534   widget_class->drag_begin = gtk_tree_view_drag_begin;
 535   widget_class->drag_end = gtk_tree_view_drag_end;
 536   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 537   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 538   widget_class->drag_leave = gtk_tree_view_drag_leave;
 539   widget_class->drag_motion = gtk_tree_view_drag_motion;
 540   widget_class->drag_drop = gtk_tree_view_drag_drop;
 541   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 542   widget_class->focus = gtk_tree_view_focus;
 543   widget_class->grab_focus = gtk_tree_view_grab_focus;
 544   widget_class->style_set = gtk_tree_view_style_set;
 545   widget_class->grab_notify = gtk_tree_view_grab_notify;
 546   widget_class->state_changed = gtk_tree_view_state_changed;
 547
 548   /* GtkContainer signals */
 549   container_class->remove = gtk_tree_view_remove;
 550   container_class->forall = gtk_tree_view_forall;
 551   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 552
 553   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 554   class->move_cursor = gtk_tree_view_real_move_cursor;
 555   class->select_all = gtk_tree_view_real_select_all;
 556   class->unselect_all = gtk_tree_view_real_unselect_all;
 557   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 558   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 559   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 560   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 561   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 562
 563   /* Properties */
 564
 565   g_object_class_install_property (o_class,
 566                                    PROP_MODEL,
 567                                    g_param_spec_object ("model",
 568                                                         P_("TreeView Model"),
 569                                                         P_("The model for the tree view"),
 570                                                         GTK_TYPE_TREE_MODEL,
 571                                                         GTK_PARAM_READWRITE));
 572
 573   g_object_class_install_property (o_class,
 574                                    PROP_HADJUSTMENT,
 575                                    g_param_spec_object ("hadjustment",
 576                                                         P_("Horizontal Adjustment"),
 577                                                         P_("Horizontal Adjustment for the widget"),
 578                                                         GTK_TYPE_ADJUSTMENT,
 579                                                         GTK_PARAM_READWRITE));
 580
 581   g_object_class_install_property (o_class,
 582                                    PROP_VADJUSTMENT,
 583                                    g_param_spec_object ("vadjustment",
 584                                                         P_("Vertical Adjustment"),
 585                                                         P_("Vertical Adjustment for the widget"),
 586                                                         GTK_TYPE_ADJUSTMENT,
 587                                                         GTK_PARAM_READWRITE));
 588
 589   g_object_class_install_property (o_class,
 590                                    PROP_HEADERS_VISIBLE,
 591                                    g_param_spec_boolean ("headers-visible",
 592                                                          P_("Headers Visible"),
 593                                                          P_("Show the column header buttons"),
 594                                                          TRUE,
 595                                                          GTK_PARAM_READWRITE));
 596
 597   g_object_class_install_property (o_class,
 598                                    PROP_HEADERS_CLICKABLE,
 599                                    g_param_spec_boolean ("headers-clickable",
 600                                                          P_("Headers Clickable"),
 601                                                          P_("Column headers respond to click events"),
 602                                                          TRUE,
 603                                                          GTK_PARAM_READWRITE));
 604
 605   g_object_class_install_property (o_class,
 606                                    PROP_EXPANDER_COLUMN,
 607                                    g_param_spec_object ("expander-column",
 608                                                         P_("Expander Column"),
 609                                                         P_("Set the column for the expander column"),
 610                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 611                                                         GTK_PARAM_READWRITE));
 612
 613   g_object_class_install_property (o_class,
 614                                    PROP_REORDERABLE,
 615                                    g_param_spec_boolean ("reorderable",
 616                                                          P_("Reorderable"),
 617                                                          P_("View is reorderable"),
 618                                                          FALSE,
 619                                                          GTK_PARAM_READWRITE));
 620
 621   g_object_class_install_property (o_class,
 622                                    PROP_RULES_HINT,
 623                                    g_param_spec_boolean ("rules-hint",
 624                                                          P_("Rules Hint"),
 625                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 626                                                          FALSE,
 627                                                          GTK_PARAM_READWRITE));
 628
 629     g_object_class_install_property (o_class,
 630                                      PROP_ENABLE_SEARCH,
 631                                      g_param_spec_boolean ("enable-search",
 632                                                            P_("Enable Search"),
 633                                                            P_("View allows user to search through columns interactively"),
 634                                                            TRUE,
 635                                                            GTK_PARAM_READWRITE));
 636
 637     g_object_class_install_property (o_class,
 638                                      PROP_SEARCH_COLUMN,
 639                                      g_param_spec_int ("search-column",
 640                                                        P_("Search Column"),
 641                                                        P_("Model column to search through during interactive search"),
 642                                                        -1,
 643                                                        G_MAXINT,
 644                                                        -1,
 645                                                        GTK_PARAM_READWRITE));
 646
 647     /**
 648      * GtkTreeView:fixed-height-mode:
 649      *
 650      * Setting the ::fixed-height-mode property to %TRUE speeds up
 651      * #GtkTreeView by assuming that all rows have the same height.
 652      * Only enable this option if all rows are the same height.
 653      * Please see gtk_tree_view_set_fixed_height_mode() for more
 654      * information on this option.
 655      *
 656      * Since: 2.4
 657      **/
 658     g_object_class_install_property (o_class,
 659                                      PROP_FIXED_HEIGHT_MODE,
 660                                      g_param_spec_boolean ("fixed-height-mode",
 661                                                            P_("Fixed Height Mode"),
 662                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 663                                                            FALSE,
 664                                                            GTK_PARAM_READWRITE));
 665
 666     /**
 667      * GtkTreeView:hover-selection:
 668      *
 669      * Enables of disables the hover selection mode of @tree_view.
 670      * Hover selection makes the selected row follow the pointer.
 671      * Currently, this works only for the selection modes
 672      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 673      *
 674      * This mode is primarily intended for treeviews in popups, e.g.
 675      * in #GtkComboBox or #GtkEntryCompletion.
 676      *
 677      * Since: 2.6
 678      */
 679     g_object_class_install_property (o_class,
 680                                      PROP_HOVER_SELECTION,
 681                                      g_param_spec_boolean ("hover-selection",
 682                                                            P_("Hover Selection"),
 683                                                            P_("Whether the selection should follow the pointer"),
 684                                                            FALSE,
 685                                                            GTK_PARAM_READWRITE));
 686
 687     /**
 688      * GtkTreeView:hover-expand:
 689      *
 690      * Enables of disables the hover expansion mode of @tree_view.
 691      * Hover expansion makes rows expand or collapse if the pointer moves
 692      * over them.
 693      *
 694      * This mode is primarily intended for treeviews in popups, e.g.
 695      * in #GtkComboBox or #GtkEntryCompletion.
 696      *
 697      * Since: 2.6
 698      */
 699     g_object_class_install_property (o_class,
 700                                      PROP_HOVER_EXPAND,
 701                                      g_param_spec_boolean ("hover-expand",
 702                                                            P_("Hover Expand"),
 703                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 704                                                            FALSE,
 705                                                            GTK_PARAM_READWRITE));
 706
 707     /**
 708      * GtkTreeView:show-expanders:
 709      *
 710      * %TRUE if the view has expanders.
 711      *
 712      * Since: 2.12
 713      */
 714     g_object_class_install_property (o_class,
 715                                      PROP_SHOW_EXPANDERS,
 716                                      g_param_spec_boolean ("show-expanders",
 717                                                            P_("Show Expanders"),
 718                                                            P_("View has expanders"),
 719                                                            TRUE,
 720                                                            GTK_PARAM_READWRITE));
 721
 722     /**
 723      * GtkTreeView:level-indentation:
 724      *
 725      * Extra indentation for each level.
 726      *
 727      * Since: 2.12
 728      */
 729     g_object_class_install_property (o_class,
 730                                      PROP_LEVEL_INDENTATION,
 731                                      g_param_spec_int ("level-indentation",
 732                                                        P_("Level Indentation"),
 733                                                        P_("Extra indentation for each level"),
 734                                                        0,
 735                                                        G_MAXINT,
 736                                                        0,
 737                                                        GTK_PARAM_READWRITE));
 738
 739     g_object_class_install_property (o_class,
 740                                      PROP_RUBBER_BANDING,
 741                                      g_param_spec_boolean ("rubber-banding",
 742                                                            P_("Rubber Banding"),
 743                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 744                                                            FALSE,
 745                                                            GTK_PARAM_READWRITE));
 746
 747     g_object_class_install_property (o_class,
 748                                      PROP_ENABLE_GRID_LINES,
 749                                      g_param_spec_enum ("enable-grid-lines",
 750                                                         P_("Enable Grid Lines"),
 751                                                         P_("Whether grid lines should be drawn in the tree view"),
 752                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 753                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 754                                                         GTK_PARAM_READWRITE));
 755
 756     g_object_class_install_property (o_class,
 757                                      PROP_ENABLE_TREE_LINES,
 758                                      g_param_spec_boolean ("enable-tree-lines",
 759                                                            P_("Enable Tree Lines"),
 760                                                            P_("Whether tree lines should be drawn in the tree view"),
 761                                                            FALSE,
 762                                                            GTK_PARAM_READWRITE));
 763
 764     g_object_class_install_property (o_class,
 765                                      PROP_TOOLTIP_COLUMN,
 766                                      g_param_spec_int ("tooltip-column",
 767                                                        P_("Tooltip Column"),
 768                                                        P_("The column in the model containing the tooltip texts for the rows"),
 769                                                        -1,
 770                                                        G_MAXINT,
 771                                                        -1,
 772                                                        GTK_PARAM_READWRITE));
 773
 774   /* Style properties */
 775 #define _TREE_VIEW_EXPANDER_SIZE 12
 776 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 777 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 778
 779   gtk_widget_class_install_style_property (widget_class,
 780                                            g_param_spec_int ("expander-size",
 781                                                              P_("Expander Size"),
 782                                                              P_("Size of the expander arrow"),
 783                                                              0,
 784                                                              G_MAXINT,
 785                                                              _TREE_VIEW_EXPANDER_SIZE,
 786                                                              GTK_PARAM_READABLE));
 787
 788   gtk_widget_class_install_style_property (widget_class,
 789                                            g_param_spec_int ("vertical-separator",
 790                                                              P_("Vertical Separator Width"),
 791                                                              P_("Vertical space between cells.  Must be an even number"),
 792                                                              0,
 793                                                              G_MAXINT,
 794                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 795                                                              GTK_PARAM_READABLE));
 796
 797   gtk_widget_class_install_style_property (widget_class,
 798                                            g_param_spec_int ("horizontal-separator",
 799                                                              P_("Horizontal Separator Width"),
 800                                                              P_("Horizontal space between cells.  Must be an even number"),
 801                                                              0,
 802                                                              G_MAXINT,
 803                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 804                                                              GTK_PARAM_READABLE));
 805
 806   gtk_widget_class_install_style_property (widget_class,
 807                                            g_param_spec_boolean ("allow-rules",
 808                                                                  P_("Allow Rules"),
 809                                                                  P_("Allow drawing of alternating color rows"),
 810                                                                  TRUE,
 811                                                                  GTK_PARAM_READABLE));
 812
 813   gtk_widget_class_install_style_property (widget_class,
 814                                            g_param_spec_boolean ("indent-expanders",
 815                                                                  P_("Indent Expanders"),
 816                                                                  P_("Make the expanders indented"),
 817                                                                  TRUE,
 818                                                                  GTK_PARAM_READABLE));
 819
 820   gtk_widget_class_install_style_property (widget_class,
 821                                            g_param_spec_boxed ("even-row-color",
 822                                                                P_("Even Row Color"),
 823                                                                P_("Color to use for even rows"),
 824                                                                GDK_TYPE_COLOR,
 825                                                                GTK_PARAM_READABLE));
 826
 827   gtk_widget_class_install_style_property (widget_class,
 828                                            g_param_spec_boxed ("odd-row-color",
 829                                                                P_("Odd Row Color"),
 830                                                                P_("Color to use for odd rows"),
 831                                                                GDK_TYPE_COLOR,
 832                                                                GTK_PARAM_READABLE));
 833
 834   gtk_widget_class_install_style_property (widget_class,
 835                                            g_param_spec_boolean ("row-ending-details",
 836                                                                  P_("Row Ending details"),
 837                                                                  P_("Enable extended row background theming"),
 838                                                                  FALSE,
 839                                                                  GTK_PARAM_READABLE));
 840
 841   gtk_widget_class_install_style_property (widget_class,
 842                                            g_param_spec_int ("grid-line-width",
 843                                                              P_("Grid line width"),
 844                                                              P_("Width, in pixels, of the tree view grid lines"),
 845                                                              0, G_MAXINT, 1,
 846                                                              GTK_PARAM_READABLE));
 847
 848   gtk_widget_class_install_style_property (widget_class,
 849                                            g_param_spec_int ("tree-line-width",
 850                                                              P_("Tree line width"),
 851                                                              P_("Width, in pixels, of the tree view lines"),
 852                                                              0, G_MAXINT, 1,
 853                                                              GTK_PARAM_READABLE));
 854
 855   gtk_widget_class_install_style_property (widget_class,
 856                                            g_param_spec_string ("grid-line-pattern",
 857                                                                 P_("Grid line pattern"),
 858                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 859                                                                 "\1\1",
 860                                                                 GTK_PARAM_READABLE));
 861
 862   gtk_widget_class_install_style_property (widget_class,
 863                                            g_param_spec_string ("tree-line-pattern",
 864                                                                 P_("Tree line pattern"),
 865                                                                 P_("Dash pattern used to draw the tree view lines"),
 866                                                                 "\1\1",
 867                                                                 GTK_PARAM_READABLE));
 868
 869   /* Signals */
 870   /**
 871    * GtkTreeView::set-scroll-adjustments
 872    * @horizontal: the horizontal #GtkAdjustment
 873    * @vertical: the vertical #GtkAdjustment
 874    *
 875    * Set the scroll adjustments for the tree view. Usually scrolled containers
 876    * like #GtkScrolledWindow will emit this signal to connect two instances
 877    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 878    */
 879   widget_class->set_scroll_adjustments_signal =
 880     g_signal_new (I_("set-scroll-adjustments"),
 881                   G_TYPE_FROM_CLASS (o_class),
 882                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 883                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 884                   NULL, NULL,
 885                   _gtk_marshal_VOID__OBJECT_OBJECT,
 886                   G_TYPE_NONE, 2,
 887                   GTK_TYPE_ADJUSTMENT,
 888                   GTK_TYPE_ADJUSTMENT);
 889
 890   /**
 891    * GtkTreeView::row-activated:
 892    * @tree_view: the object on which the signal is emitted
 893    * @path: the #GtkTreePath for the activated row
 894    * @column: the #GtkTreeViewColumn in which the activation occurred
 895    *
 896    * The "row-activated" signal is emitted when the method
 897    * gtk_tree_view_row_activated() is called or the user double clicks
 898    * a treeview row. It is also emitted when a non-editable row is
 899    * selected and one of the keys: Space, Shift+Space, Return or
 900    * Enter is pressed.
 901    *
 902    * For selection handling refer to the <link linkend="TreeWidget">tree
 903    * widget conceptual overview</link> as well as #GtkTreeSelection.
 904    */
 905   tree_view_signals[ROW_ACTIVATED] =
 906     g_signal_new (I_("row-activated"),
 907                   G_TYPE_FROM_CLASS (o_class),
 908                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 909                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 910                   NULL, NULL,
 911                   _gtk_marshal_VOID__BOXED_OBJECT,
 912                   G_TYPE_NONE, 2,
 913                   GTK_TYPE_TREE_PATH,
 914                   GTK_TYPE_TREE_VIEW_COLUMN);
 915
 916   /**
 917    * GtkTreeView::test-expand-row:
 918    * @tree_view: the object on which the signal is emitted
 919    * @iter: the tree iter of the row to expand
 920    * @path: a tree path that points to the row
 921    *
 922    * The given row is about to be expanded (show its children nodes). Use this
 923    * signal if you need to control the expandability of individual rows.
 924    *
 925    * Returns: %FALSE to allow expansion, %TRUE to reject
 926    */
 927   tree_view_signals[TEST_EXPAND_ROW] =
 928     g_signal_new (I_("test-expand-row"),
 929                   G_TYPE_FROM_CLASS (o_class),
 930                   G_SIGNAL_RUN_LAST,
 931                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 932                   _gtk_boolean_handled_accumulator, NULL,
 933                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 934                   G_TYPE_BOOLEAN, 2,
 935                   GTK_TYPE_TREE_ITER,
 936                   GTK_TYPE_TREE_PATH);
 937
 938   /**
 939    * GtkTreeView::test-collapse-row:
 940    * @tree_view: the object on which the signal is emitted
 941    * @iter: the tree iter of the row to collapse
 942    * @path: a tree path that points to the row
 943    *
 944    * The given row is about to be collapsed (hide its children nodes). Use this
 945    * signal if you need to control the collapsibility of individual rows.
 946    *
 947    * Returns: %FALSE to allow collapsing, %TRUE to reject
 948    */
 949   tree_view_signals[TEST_COLLAPSE_ROW] =
 950     g_signal_new (I_("test-collapse-row"),
 951                   G_TYPE_FROM_CLASS (o_class),
 952                   G_SIGNAL_RUN_LAST,
 953                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 954                   _gtk_boolean_handled_accumulator, NULL,
 955                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 956                   G_TYPE_BOOLEAN, 2,
 957                   GTK_TYPE_TREE_ITER,
 958                   GTK_TYPE_TREE_PATH);
 959
 960   /**
 961    * GtkTreeView::row-expanded:
 962    * @tree_view: the object on which the signal is emitted
 963    * @iter: the tree iter of the expanded row
 964    * @path: a tree path that points to the row
 965    *
 966    * The given row has been expanded (child nodes are shown).
 967    */
 968   tree_view_signals[ROW_EXPANDED] =
 969     g_signal_new (I_("row-expanded"),
 970                   G_TYPE_FROM_CLASS (o_class),
 971                   G_SIGNAL_RUN_LAST,
 972                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 973                   NULL, NULL,
 974                   _gtk_marshal_VOID__BOXED_BOXED,
 975                   G_TYPE_NONE, 2,
 976                   GTK_TYPE_TREE_ITER,
 977                   GTK_TYPE_TREE_PATH);
 978
 979   /**
 980    * GtkTreeView::row-collapsed:
 981    * @tree_view: the object on which the signal is emitted
 982    * @iter: the tree iter of the collapsed row
 983    * @path: a tree path that points to the row
 984    *
 985    * The given row has been collapsed (child nodes are hidden).
 986    */
 987   tree_view_signals[ROW_COLLAPSED] =
 988     g_signal_new (I_("row-collapsed"),
 989                   G_TYPE_FROM_CLASS (o_class),
 990                   G_SIGNAL_RUN_LAST,
 991                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 992                   NULL, NULL,
 993                   _gtk_marshal_VOID__BOXED_BOXED,
 994                   G_TYPE_NONE, 2,
 995                   GTK_TYPE_TREE_ITER,
 996                   GTK_TYPE_TREE_PATH);
 997
 998   /**
 999    * GtkTreeView::columns-changed:
1000    * @tree_view: the object on which the signal is emitted
1001    *
1002    * The number of columns of the treeview has changed.
1003    */
1004   tree_view_signals[COLUMNS_CHANGED] =
1005     g_signal_new (I_("columns-changed"),
1006                   G_TYPE_FROM_CLASS (o_class),
1007                   G_SIGNAL_RUN_LAST,
1008                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1009                   NULL, NULL,
1010                   _gtk_marshal_VOID__VOID,
1011                   G_TYPE_NONE, 0);
1012
1013   /**
1014    * GtkTreeView::cursor-changed:
1015    * @tree_view: the object on which the signal is emitted
1016    *
1017    * The position of the cursor (focused cell) has changed.
1018    */
1019   tree_view_signals[CURSOR_CHANGED] =
1020     g_signal_new (I_("cursor-changed"),
1021                   G_TYPE_FROM_CLASS (o_class),
1022                   G_SIGNAL_RUN_LAST,
1023                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1024                   NULL, NULL,
1025                   _gtk_marshal_VOID__VOID,
1026                   G_TYPE_NONE, 0);
1027
1028   tree_view_signals[MOVE_CURSOR] =
1029     g_signal_new (I_("move-cursor"),
1030                   G_TYPE_FROM_CLASS (object_class),
1031                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1032                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1033                   NULL, NULL,
1034                   _gtk_marshal_BOOLEAN__ENUM_INT,
1035                   G_TYPE_BOOLEAN, 2,
1036                   GTK_TYPE_MOVEMENT_STEP,
1037                   G_TYPE_INT);
1038
1039   tree_view_signals[SELECT_ALL] =
1040     g_signal_new (I_("select-all"),
1041                   G_TYPE_FROM_CLASS (object_class),
1042                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1043                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1044                   NULL, NULL,
1045                   _gtk_marshal_BOOLEAN__VOID,
1046                   G_TYPE_BOOLEAN, 0);
1047
1048   tree_view_signals[UNSELECT_ALL] =
1049     g_signal_new (I_("unselect-all"),
1050                   G_TYPE_FROM_CLASS (object_class),
1051                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1052                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1053                   NULL, NULL,
1054                   _gtk_marshal_BOOLEAN__VOID,
1055                   G_TYPE_BOOLEAN, 0);
1056
1057   tree_view_signals[SELECT_CURSOR_ROW] =
1058     g_signal_new (I_("select-cursor-row"),
1059                   G_TYPE_FROM_CLASS (object_class),
1060                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1061                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1062                   NULL, NULL,
1063                   _gtk_marshal_BOOLEAN__BOOLEAN,
1064                   G_TYPE_BOOLEAN, 1,
1065                   G_TYPE_BOOLEAN);
1066
1067   tree_view_signals[TOGGLE_CURSOR_ROW] =
1068     g_signal_new (I_("toggle-cursor-row"),
1069                   G_TYPE_FROM_CLASS (object_class),
1070                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1071                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1072                   NULL, NULL,
1073                   _gtk_marshal_BOOLEAN__VOID,
1074                   G_TYPE_BOOLEAN, 0);
1075
1076   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1077     g_signal_new (I_("expand-collapse-cursor-row"),
1078                   G_TYPE_FROM_CLASS (object_class),
1079                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1080                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1081                   NULL, NULL,
1082                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1083                   G_TYPE_BOOLEAN, 3,
1084                   G_TYPE_BOOLEAN,
1085                   G_TYPE_BOOLEAN,
1086                   G_TYPE_BOOLEAN);
1087
1088   tree_view_signals[SELECT_CURSOR_PARENT] =
1089     g_signal_new (I_("select-cursor-parent"),
1090                   G_TYPE_FROM_CLASS (object_class),
1091                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1092                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1093                   NULL, NULL,
1094                   _gtk_marshal_BOOLEAN__VOID,
1095                   G_TYPE_BOOLEAN, 0);
1096
1097   tree_view_signals[START_INTERACTIVE_SEARCH] =
1098     g_signal_new (I_("start-interactive-search"),
1099                   G_TYPE_FROM_CLASS (object_class),
1100                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1101                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1102                   NULL, NULL,
1103                   _gtk_marshal_BOOLEAN__VOID,
1104                   G_TYPE_BOOLEAN, 0);
1105
1106   /* Key bindings */
1107   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1108                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1109   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1110                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1111
1112   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1113                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1114   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1115                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1116
1117   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1118                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1119
1120   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1121                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1122
1123   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1124                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1125   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1126                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1127
1128   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1129                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1130   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1131                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1132
1133   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1134                                   GTK_MOVEMENT_PAGES, -1);
1135   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1136                                   GTK_MOVEMENT_PAGES, -1);
1137
1138   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1139                                   GTK_MOVEMENT_PAGES, 1);
1140   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1141                                   GTK_MOVEMENT_PAGES, 1);
1142
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1145                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1146                                 G_TYPE_INT, 1);
1147
1148   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1149                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1150                                 G_TYPE_INT, -1);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1153                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1154                                 G_TYPE_INT, 1);
1155
1156   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1157                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1158                                 G_TYPE_INT, -1);
1159
1160   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1161                                 "move-cursor", 2,
1162                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1163                                 G_TYPE_INT, 1);
1164
1165   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1166                                 "move-cursor", 2,
1167                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1168                                 G_TYPE_INT, -1);
1169
1170   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1171                                 "move-cursor", 2,
1172                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1173                                 G_TYPE_INT, 1);
1174
1175   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1176                                 "move-cursor", 2,
1177                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1178                                 G_TYPE_INT, -1);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1181   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1182
1183   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1184   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1185
1186   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1187   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1188
1189   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1190                                 G_TYPE_BOOLEAN, TRUE);
1191   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1192                                 G_TYPE_BOOLEAN, TRUE);
1193
1194   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1199                                 G_TYPE_BOOLEAN, TRUE);
1200   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1201                                 G_TYPE_BOOLEAN, TRUE);
1202   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1203                                 G_TYPE_BOOLEAN, TRUE);
1204
1205   /* expand and collapse rows */
1206   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, FALSE);
1210
1211   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1212                                 "expand-collapse-cursor-row", 3,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE);
1216   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1217                                 "expand-collapse-cursor-row", 3,
1218                                 G_TYPE_BOOLEAN, TRUE,
1219                                 G_TYPE_BOOLEAN, TRUE,
1220                                 G_TYPE_BOOLEAN, TRUE);
1221
1222   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1223                                 "expand-collapse-cursor-row", 3,
1224                                 G_TYPE_BOOLEAN, TRUE,
1225                                 G_TYPE_BOOLEAN, FALSE,
1226                                 G_TYPE_BOOLEAN, FALSE);
1227   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1228                                 "expand-collapse-cursor-row", 3,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, FALSE,
1231                                 G_TYPE_BOOLEAN, FALSE);
1232
1233   /* Not doable on US keyboards */
1234   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1235                                 G_TYPE_BOOLEAN, TRUE,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, TRUE);
1238   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1239                                 G_TYPE_BOOLEAN, TRUE,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, FALSE);
1242   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1243                                 G_TYPE_BOOLEAN, TRUE,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, TRUE);
1246   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1247                                 G_TYPE_BOOLEAN, TRUE,
1248                                 G_TYPE_BOOLEAN, TRUE,
1249                                 G_TYPE_BOOLEAN, TRUE);
1250   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1251                                 "expand-collapse-cursor-row", 3,
1252                                 G_TYPE_BOOLEAN, FALSE,
1253                                 G_TYPE_BOOLEAN, TRUE,
1254                                 G_TYPE_BOOLEAN, TRUE);
1255   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
1256                                 "expand-collapse-cursor-row", 3,
1257                                 G_TYPE_BOOLEAN, FALSE,
1258                                 G_TYPE_BOOLEAN, TRUE,
1259                                 G_TYPE_BOOLEAN, TRUE);
1260   gtk_binding_entry_add_signal (binding_set, GDK_Right,
1261                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1262                                 "expand-collapse-cursor-row", 3,
1263                                 G_TYPE_BOOLEAN, FALSE,
1264                                 G_TYPE_BOOLEAN, TRUE,
1265                                 G_TYPE_BOOLEAN, TRUE);
1266   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1267                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1268                                 "expand-collapse-cursor-row", 3,
1269                                 G_TYPE_BOOLEAN, FALSE,
1270                                 G_TYPE_BOOLEAN, TRUE,
1271                                 G_TYPE_BOOLEAN, TRUE);
1272
1273   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1274                                 G_TYPE_BOOLEAN, TRUE,
1275                                 G_TYPE_BOOLEAN, FALSE,
1276                                 G_TYPE_BOOLEAN, FALSE);
1277   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1278                                 G_TYPE_BOOLEAN, TRUE,
1279                                 G_TYPE_BOOLEAN, FALSE,
1280                                 G_TYPE_BOOLEAN, TRUE);
1281   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1282                                 G_TYPE_BOOLEAN, TRUE,
1283                                 G_TYPE_BOOLEAN, FALSE,
1284                                 G_TYPE_BOOLEAN, FALSE);
1285   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1286                                 G_TYPE_BOOLEAN, TRUE,
1287                                 G_TYPE_BOOLEAN, FALSE,
1288                                 G_TYPE_BOOLEAN, TRUE);
1289   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1290                                 "expand-collapse-cursor-row", 3,
1291                                 G_TYPE_BOOLEAN, FALSE,
1292                                 G_TYPE_BOOLEAN, FALSE,
1293                                 G_TYPE_BOOLEAN, TRUE);
1294   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1295                                 "expand-collapse-cursor-row", 3,
1296                                 G_TYPE_BOOLEAN, FALSE,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, TRUE);
1299   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1300                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1301                                 "expand-collapse-cursor-row", 3,
1302                                 G_TYPE_BOOLEAN, FALSE,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, TRUE);
1305   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1306                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1307                                 "expand-collapse-cursor-row", 3,
1308                                 G_TYPE_BOOLEAN, FALSE,
1309                                 G_TYPE_BOOLEAN, FALSE,
1310                                 G_TYPE_BOOLEAN, TRUE);
1311
1312   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1313   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1314
1315   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1316
1317   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1318
1319   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1320 }
1321
1322 static void
1323 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1324 {
1325   iface->add_child = gtk_tree_view_buildable_add_child;
1326 }
1327
1328 static void
1329 gtk_tree_view_init (GtkTreeView *tree_view)
1330 {
1331   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1332
1333   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
1334
1335   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1336
1337   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1338                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1339                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1340
1341   /* We need some padding */
1342   tree_view->priv->dy = 0;
1343   tree_view->priv->cursor_offset = 0;
1344   tree_view->priv->n_columns = 0;
1345   tree_view->priv->header_height = 1;
1346   tree_view->priv->x_drag = 0;
1347   tree_view->priv->drag_pos = -1;
1348   tree_view->priv->header_has_focus = FALSE;
1349   tree_view->priv->pressed_button = -1;
1350   tree_view->priv->press_start_x = -1;
1351   tree_view->priv->press_start_y = -1;
1352   tree_view->priv->reorderable = FALSE;
1353   tree_view->priv->presize_handler_timer = 0;
1354   tree_view->priv->scroll_sync_timer = 0;
1355   tree_view->priv->fixed_height = -1;
1356   tree_view->priv->fixed_height_mode = FALSE;
1357   tree_view->priv->fixed_height_check = 0;
1358   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1359   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1360   tree_view->priv->enable_search = TRUE;
1361   tree_view->priv->search_column = -1;
1362   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1363   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1364   tree_view->priv->search_custom_entry_set = FALSE;
1365   tree_view->priv->typeselect_flush_timeout = 0;
1366   tree_view->priv->init_hadjust_value = TRUE;
1367   tree_view->priv->width = 0;
1368
1369   tree_view->priv->hover_selection = FALSE;
1370   tree_view->priv->hover_expand = FALSE;
1371
1372   tree_view->priv->level_indentation = 0;
1373
1374   tree_view->priv->rubber_banding_enable = FALSE;
1375
1376   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1377   tree_view->priv->tree_lines_enabled = FALSE;
1378
1379   tree_view->priv->tooltip_column = -1;
1380
1381   tree_view->priv->post_validation_flag = FALSE;
1382
1383   tree_view->priv->last_button_x = -1;
1384   tree_view->priv->last_button_y = -1;
1385 }
1386
1387 \f
1388
1389 /* GObject Methods
1390  */
1391
1392 static void
1393 gtk_tree_view_set_property (GObject         *object,
1394                             guint            prop_id,
1395                             const GValue    *value,
1396                             GParamSpec      *pspec)
1397 {
1398   GtkTreeView *tree_view;
1399
1400   tree_view = GTK_TREE_VIEW (object);
1401
1402   switch (prop_id)
1403     {
1404     case PROP_MODEL:
1405       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1406       break;
1407     case PROP_HADJUSTMENT:
1408       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1409       break;
1410     case PROP_VADJUSTMENT:
1411       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1412       break;
1413     case PROP_HEADERS_VISIBLE:
1414       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1415       break;
1416     case PROP_HEADERS_CLICKABLE:
1417       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1418       break;
1419     case PROP_EXPANDER_COLUMN:
1420       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1421       break;
1422     case PROP_REORDERABLE:
1423       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1424       break;
1425     case PROP_RULES_HINT:
1426       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1427       break;
1428     case PROP_ENABLE_SEARCH:
1429       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1430       break;
1431     case PROP_SEARCH_COLUMN:
1432       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1433       break;
1434     case PROP_FIXED_HEIGHT_MODE:
1435       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1436       break;
1437     case PROP_HOVER_SELECTION:
1438       tree_view->priv->hover_selection = g_value_get_boolean (value);
1439       break;
1440     case PROP_HOVER_EXPAND:
1441       tree_view->priv->hover_expand = g_value_get_boolean (value);
1442       break;
1443     case PROP_SHOW_EXPANDERS:
1444       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1445       break;
1446     case PROP_LEVEL_INDENTATION:
1447       tree_view->priv->level_indentation = g_value_get_int (value);
1448       break;
1449     case PROP_RUBBER_BANDING:
1450       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1451       break;
1452     case PROP_ENABLE_GRID_LINES:
1453       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1454       break;
1455     case PROP_ENABLE_TREE_LINES:
1456       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1457       break;
1458     case PROP_TOOLTIP_COLUMN:
1459       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1460       break;
1461     default:
1462       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1463       break;
1464     }
1465 }
1466
1467 static void
1468 gtk_tree_view_get_property (GObject    *object,
1469                             guint       prop_id,
1470                             GValue     *value,
1471                             GParamSpec *pspec)
1472 {
1473   GtkTreeView *tree_view;
1474
1475   tree_view = GTK_TREE_VIEW (object);
1476
1477   switch (prop_id)
1478     {
1479     case PROP_MODEL:
1480       g_value_set_object (value, tree_view->priv->model);
1481       break;
1482     case PROP_HADJUSTMENT:
1483       g_value_set_object (value, tree_view->priv->hadjustment);
1484       break;
1485     case PROP_VADJUSTMENT:
1486       g_value_set_object (value, tree_view->priv->vadjustment);
1487       break;
1488     case PROP_HEADERS_VISIBLE:
1489       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1490       break;
1491     case PROP_HEADERS_CLICKABLE:
1492       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1493       break;
1494     case PROP_EXPANDER_COLUMN:
1495       g_value_set_object (value, tree_view->priv->expander_column);
1496       break;
1497     case PROP_REORDERABLE:
1498       g_value_set_boolean (value, tree_view->priv->reorderable);
1499       break;
1500     case PROP_RULES_HINT:
1501       g_value_set_boolean (value, tree_view->priv->has_rules);
1502       break;
1503     case PROP_ENABLE_SEARCH:
1504       g_value_set_boolean (value, tree_view->priv->enable_search);
1505       break;
1506     case PROP_SEARCH_COLUMN:
1507       g_value_set_int (value, tree_view->priv->search_column);
1508       break;
1509     case PROP_FIXED_HEIGHT_MODE:
1510       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1511       break;
1512     case PROP_HOVER_SELECTION:
1513       g_value_set_boolean (value, tree_view->priv->hover_selection);
1514       break;
1515     case PROP_HOVER_EXPAND:
1516       g_value_set_boolean (value, tree_view->priv->hover_expand);
1517       break;
1518     case PROP_SHOW_EXPANDERS:
1519       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1520       break;
1521     case PROP_LEVEL_INDENTATION:
1522       g_value_set_int (value, tree_view->priv->level_indentation);
1523       break;
1524     case PROP_RUBBER_BANDING:
1525       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1526       break;
1527     case PROP_ENABLE_GRID_LINES:
1528       g_value_set_enum (value, tree_view->priv->grid_lines);
1529       break;
1530     case PROP_ENABLE_TREE_LINES:
1531       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1532       break;
1533     case PROP_TOOLTIP_COLUMN:
1534       g_value_set_int (value, tree_view->priv->tooltip_column);
1535       break;
1536     default:
1537       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1538       break;
1539     }
1540 }
1541
1542 static void
1543 gtk_tree_view_finalize (GObject *object)
1544 {
1545   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1546 }
1547
1548 \f
1549
1550 static void
1551 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1552                                    GtkBuilder  *builder,
1553                                    GObject     *child,
1554                                    const gchar *type)
1555 {
1556   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1557 }
1558
1559 /* GtkObject Methods
1560  */
1561
1562 static void
1563 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1564 {
1565   _gtk_rbtree_free (tree_view->priv->tree);
1566
1567   tree_view->priv->tree = NULL;
1568   tree_view->priv->button_pressed_node = NULL;
1569   tree_view->priv->button_pressed_tree = NULL;
1570   tree_view->priv->prelight_tree = NULL;
1571   tree_view->priv->prelight_node = NULL;
1572   tree_view->priv->expanded_collapsed_node = NULL;
1573   tree_view->priv->expanded_collapsed_tree = NULL;
1574 }
1575
1576 static void
1577 gtk_tree_view_destroy (GtkObject *object)
1578 {
1579   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1580   GList *list;
1581
1582   gtk_tree_view_stop_editing (tree_view, TRUE);
1583
1584   if (tree_view->priv->columns != NULL)
1585     {
1586       list = tree_view->priv->columns;
1587       while (list)
1588         {
1589           GtkTreeViewColumn *column;
1590           column = GTK_TREE_VIEW_COLUMN (list->data);
1591           list = list->next;
1592           gtk_tree_view_remove_column (tree_view, column);
1593         }
1594       tree_view->priv->columns = NULL;
1595     }
1596
1597   if (tree_view->priv->tree != NULL)
1598     {
1599       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1600
1601       gtk_tree_view_free_rbtree (tree_view);
1602     }
1603
1604   if (tree_view->priv->selection != NULL)
1605     {
1606       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1607       g_object_unref (tree_view->priv->selection);
1608       tree_view->priv->selection = NULL;
1609     }
1610
1611   if (tree_view->priv->scroll_to_path != NULL)
1612     {
1613       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1614       tree_view->priv->scroll_to_path = NULL;
1615     }
1616
1617   if (tree_view->priv->drag_dest_row != NULL)
1618     {
1619       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1620       tree_view->priv->drag_dest_row = NULL;
1621     }
1622
1623   if (tree_view->priv->top_row != NULL)
1624     {
1625       gtk_tree_row_reference_free (tree_view->priv->top_row);
1626       tree_view->priv->top_row = NULL;
1627     }
1628
1629   if (tree_view->priv->column_drop_func_data &&
1630       tree_view->priv->column_drop_func_data_destroy)
1631     {
1632       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1633       tree_view->priv->column_drop_func_data = NULL;
1634     }
1635
1636   if (tree_view->priv->destroy_count_destroy &&
1637       tree_view->priv->destroy_count_data)
1638     {
1639       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1640       tree_view->priv->destroy_count_data = NULL;
1641     }
1642
1643   gtk_tree_row_reference_free (tree_view->priv->cursor);
1644   tree_view->priv->cursor = NULL;
1645
1646   gtk_tree_row_reference_free (tree_view->priv->anchor);
1647   tree_view->priv->anchor = NULL;
1648
1649   /* destroy interactive search dialog */
1650   if (tree_view->priv->search_window)
1651     {
1652       gtk_widget_destroy (tree_view->priv->search_window);
1653       tree_view->priv->search_window = NULL;
1654       tree_view->priv->search_entry = NULL;
1655       if (tree_view->priv->typeselect_flush_timeout)
1656         {
1657           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1658           tree_view->priv->typeselect_flush_timeout = 0;
1659         }
1660     }
1661
1662   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1663     {
1664       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1665       tree_view->priv->search_user_data = NULL;
1666     }
1667
1668   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1669     {
1670       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1671       tree_view->priv->search_position_user_data = NULL;
1672     }
1673
1674   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1675     {
1676       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1677       tree_view->priv->row_separator_data = NULL;
1678     }
1679
1680   gtk_tree_view_set_model (tree_view, NULL);
1681
1682   if (tree_view->priv->hadjustment)
1683     {
1684       g_object_unref (tree_view->priv->hadjustment);
1685       tree_view->priv->hadjustment = NULL;
1686     }
1687   if (tree_view->priv->vadjustment)
1688     {
1689       g_object_unref (tree_view->priv->vadjustment);
1690       tree_view->priv->vadjustment = NULL;
1691     }
1692
1693   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1694 }
1695
1696 \f
1697
1698 /* GtkWidget Methods
1699  */
1700
1701 /* GtkWidget::map helper */
1702 static void
1703 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1704 {
1705   GList *list;
1706
1707   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1708
1709   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1710     {
1711       GtkTreeViewColumn *column;
1712
1713       for (list = tree_view->priv->columns; list; list = list->next)
1714         {
1715           column = list->data;
1716           if (GTK_WIDGET_VISIBLE (column->button) &&
1717               !GTK_WIDGET_MAPPED (column->button))
1718             gtk_widget_map (column->button);
1719         }
1720       for (list = tree_view->priv->columns; list; list = list->next)
1721         {
1722           column = list->data;
1723           if (column->visible == FALSE)
1724             continue;
1725           if (column->resizable)
1726             {
1727               gdk_window_raise (column->window);
1728               gdk_window_show (column->window);
1729             }
1730           else
1731             gdk_window_hide (column->window);
1732         }
1733       gdk_window_show (tree_view->priv->header_window);
1734     }
1735 }
1736
1737 static void
1738 gtk_tree_view_map (GtkWidget *widget)
1739 {
1740   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1741   GList *tmp_list;
1742
1743   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1744
1745   tmp_list = tree_view->priv->children;
1746   while (tmp_list)
1747     {
1748       GtkTreeViewChild *child = tmp_list->data;
1749       tmp_list = tmp_list->next;
1750
1751       if (GTK_WIDGET_VISIBLE (child->widget))
1752         {
1753           if (!GTK_WIDGET_MAPPED (child->widget))
1754             gtk_widget_map (child->widget);
1755         }
1756     }
1757   gdk_window_show (tree_view->priv->bin_window);
1758
1759   gtk_tree_view_map_buttons (tree_view);
1760
1761   gdk_window_show (widget->window);
1762 }
1763
1764 static void
1765 gtk_tree_view_realize (GtkWidget *widget)
1766 {
1767   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1768   GList *tmp_list;
1769   GdkWindowAttr attributes;
1770   gint attributes_mask;
1771
1772   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1773
1774   /* Make the main, clipping window */
1775   attributes.window_type = GDK_WINDOW_CHILD;
1776   attributes.x = widget->allocation.x;
1777   attributes.y = widget->allocation.y;
1778   attributes.width = widget->allocation.width;
1779   attributes.height = widget->allocation.height;
1780   attributes.wclass = GDK_INPUT_OUTPUT;
1781   attributes.visual = gtk_widget_get_visual (widget);
1782   attributes.colormap = gtk_widget_get_colormap (widget);
1783   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1784
1785   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1786
1787   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1788                                    &attributes, attributes_mask);
1789   gdk_window_set_user_data (widget->window, widget);
1790
1791   /* Make the window for the tree */
1792   attributes.x = 0;
1793   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1794   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1795   attributes.height = widget->allocation.height;
1796   attributes.event_mask = (GDK_EXPOSURE_MASK |
1797                            GDK_SCROLL_MASK |
1798                            GDK_POINTER_MOTION_MASK |
1799                            GDK_ENTER_NOTIFY_MASK |
1800                            GDK_LEAVE_NOTIFY_MASK |
1801                            GDK_BUTTON_PRESS_MASK |
1802                            GDK_BUTTON_RELEASE_MASK |
1803                            gtk_widget_get_events (widget));
1804
1805   tree_view->priv->bin_window = gdk_window_new (widget->window,
1806                                                 &attributes, attributes_mask);
1807   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1808
1809   /* Make the column header window */
1810   attributes.x = 0;
1811   attributes.y = 0;
1812   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1813   attributes.height = tree_view->priv->header_height;
1814   attributes.event_mask = (GDK_EXPOSURE_MASK |
1815                            GDK_SCROLL_MASK |
1816                            GDK_BUTTON_PRESS_MASK |
1817                            GDK_BUTTON_RELEASE_MASK |
1818                            GDK_KEY_PRESS_MASK |
1819                            GDK_KEY_RELEASE_MASK |
1820                            gtk_widget_get_events (widget));
1821
1822   tree_view->priv->header_window = gdk_window_new (widget->window,
1823                                                    &attributes, attributes_mask);
1824   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1825
1826   /* Add them all up. */
1827   widget->style = gtk_style_attach (widget->style, widget->window);
1828   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1829   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1830   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1831
1832   tmp_list = tree_view->priv->children;
1833   while (tmp_list)
1834     {
1835       GtkTreeViewChild *child = tmp_list->data;
1836       tmp_list = tmp_list->next;
1837
1838       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1839     }
1840
1841   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1842     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1843
1844   /* Need to call those here, since they create GCs */
1845   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1846   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1847
1848   install_presize_handler (tree_view);
1849 }
1850
1851 static void
1852 gtk_tree_view_unrealize (GtkWidget *widget)
1853 {
1854   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1855   GtkTreeViewPrivate *priv = tree_view->priv;
1856   GList *list;
1857
1858   if (priv->scroll_timeout != 0)
1859     {
1860       g_source_remove (priv->scroll_timeout);
1861       priv->scroll_timeout = 0;
1862     }
1863
1864   if (priv->auto_expand_timeout != 0)
1865     {
1866       g_source_remove (priv->auto_expand_timeout);
1867       priv->auto_expand_timeout = 0;
1868     }
1869
1870   if (priv->open_dest_timeout != 0)
1871     {
1872       g_source_remove (priv->open_dest_timeout);
1873       priv->open_dest_timeout = 0;
1874     }
1875
1876   remove_expand_collapse_timeout (tree_view);
1877
1878   if (priv->presize_handler_timer != 0)
1879     {
1880       g_source_remove (priv->presize_handler_timer);
1881       priv->presize_handler_timer = 0;
1882     }
1883
1884   if (priv->validate_rows_timer != 0)
1885     {
1886       g_source_remove (priv->validate_rows_timer);
1887       priv->validate_rows_timer = 0;
1888     }
1889
1890   if (priv->scroll_sync_timer != 0)
1891     {
1892       g_source_remove (priv->scroll_sync_timer);
1893       priv->scroll_sync_timer = 0;
1894     }
1895
1896   if (priv->typeselect_flush_timeout)
1897     {
1898       g_source_remove (priv->typeselect_flush_timeout);
1899       priv->typeselect_flush_timeout = 0;
1900     }
1901
1902   for (list = priv->columns; list; list = list->next)
1903     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1904
1905   gdk_window_set_user_data (priv->bin_window, NULL);
1906   gdk_window_destroy (priv->bin_window);
1907   priv->bin_window = NULL;
1908
1909   gdk_window_set_user_data (priv->header_window, NULL);
1910   gdk_window_destroy (priv->header_window);
1911   priv->header_window = NULL;
1912
1913   if (priv->drag_window)
1914     {
1915       gdk_window_set_user_data (priv->drag_window, NULL);
1916       gdk_window_destroy (priv->drag_window);
1917       priv->drag_window = NULL;
1918     }
1919
1920   if (priv->drag_highlight_window)
1921     {
1922       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1923       gdk_window_destroy (priv->drag_highlight_window);
1924       priv->drag_highlight_window = NULL;
1925     }
1926
1927   if (priv->tree_line_gc)
1928     {
1929       g_object_unref (priv->tree_line_gc);
1930       priv->tree_line_gc = NULL;
1931     }
1932
1933   if (priv->grid_line_gc)
1934     {
1935       g_object_unref (priv->grid_line_gc);
1936       priv->grid_line_gc = NULL;
1937     }
1938
1939   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1940 }
1941
1942 /* GtkWidget::size_request helper */
1943 static void
1944 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1945 {
1946   GList *list;
1947
1948   tree_view->priv->header_height = 0;
1949
1950   if (tree_view->priv->model)
1951     {
1952       for (list = tree_view->priv->columns; list; list = list->next)
1953         {
1954           GtkRequisition requisition;
1955           GtkTreeViewColumn *column = list->data;
1956
1957           if (column->button == NULL)
1958             continue;
1959
1960           column = list->data;
1961
1962           gtk_widget_size_request (column->button, &requisition);
1963           column->button_request = requisition.width;
1964           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1965         }
1966     }
1967 }
1968
1969
1970 /* Called only by ::size_request */
1971 static void
1972 gtk_tree_view_update_size (GtkTreeView *tree_view)
1973 {
1974   GList *list;
1975   GtkTreeViewColumn *column;
1976   gint i;
1977
1978   if (tree_view->priv->model == NULL)
1979     {
1980       tree_view->priv->width = 0;
1981       tree_view->priv->prev_width = 0;
1982       tree_view->priv->height = 0;
1983       return;
1984     }
1985
1986   tree_view->priv->prev_width = tree_view->priv->width;
1987   tree_view->priv->width = 0;
1988
1989   /* keep this in sync with size_allocate below */
1990   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1991     {
1992       gint real_requested_width = 0;
1993       column = list->data;
1994       if (!column->visible)
1995         continue;
1996
1997       if (column->use_resized_width)
1998         {
1999           real_requested_width = column->resized_width;
2000         }
2001       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2002         {
2003           real_requested_width = column->fixed_width;
2004         }
2005       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2006         {
2007           real_requested_width = MAX (column->requested_width, column->button_request);
2008         }
2009       else
2010         {
2011           real_requested_width = column->requested_width;
2012         }
2013
2014       if (column->min_width != -1)
2015         real_requested_width = MAX (real_requested_width, column->min_width);
2016       if (column->max_width != -1)
2017         real_requested_width = MIN (real_requested_width, column->max_width);
2018
2019       tree_view->priv->width += real_requested_width;
2020     }
2021
2022   if (tree_view->priv->tree == NULL)
2023     tree_view->priv->height = 0;
2024   else
2025     tree_view->priv->height = tree_view->priv->tree->root->offset;
2026 }
2027
2028 static void
2029 gtk_tree_view_size_request (GtkWidget      *widget,
2030                             GtkRequisition *requisition)
2031 {
2032   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2033   GList *tmp_list;
2034
2035   /* we validate some rows initially just to make sure we have some size.
2036    * In practice, with a lot of static lists, this should get a good width.
2037    */
2038   do_validate_rows (tree_view, FALSE);
2039   gtk_tree_view_size_request_columns (tree_view);
2040   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2041
2042   requisition->width = tree_view->priv->width;
2043   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2044
2045   tmp_list = tree_view->priv->children;
2046
2047   while (tmp_list)
2048     {
2049       GtkTreeViewChild *child = tmp_list->data;
2050       GtkRequisition child_requisition;
2051
2052       tmp_list = tmp_list->next;
2053
2054       if (GTK_WIDGET_VISIBLE (child->widget))
2055         gtk_widget_size_request (child->widget, &child_requisition);
2056     }
2057 }
2058
2059
2060 static void
2061 invalidate_column (GtkTreeView       *tree_view,
2062                    GtkTreeViewColumn *column)
2063 {
2064   gint column_offset = 0;
2065   GList *list;
2066   GtkWidget *widget = GTK_WIDGET (tree_view);
2067   gboolean rtl;
2068
2069   if (!GTK_WIDGET_REALIZED (widget))
2070     return;
2071
2072   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2073   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2074        list;
2075        list = (rtl ? list->prev : list->next))
2076     {
2077       GtkTreeViewColumn *tmpcolumn = list->data;
2078       if (tmpcolumn == column)
2079         {
2080           GdkRectangle invalid_rect;
2081
2082           invalid_rect.x = column_offset;
2083           invalid_rect.y = 0;
2084           invalid_rect.width = column->width;
2085           invalid_rect.height = widget->allocation.height;
2086
2087           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2088           break;
2089         }
2090
2091       column_offset += tmpcolumn->width;
2092     }
2093 }
2094
2095 static void
2096 invalidate_last_column (GtkTreeView *tree_view)
2097 {
2098   GList *last_column;
2099   gboolean rtl;
2100
2101   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2102
2103   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2104        last_column;
2105        last_column = (rtl ? last_column->next : last_column->prev))
2106     {
2107       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2108         {
2109           invalidate_column (tree_view, last_column->data);
2110           return;
2111         }
2112     }
2113 }
2114
2115 static gint
2116 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2117                                                     GtkTreeViewColumn *column)
2118 {
2119   gint real_requested_width;
2120
2121   if (column->use_resized_width)
2122     {
2123       real_requested_width = column->resized_width;
2124     }
2125   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2126     {
2127       real_requested_width = column->fixed_width;
2128     }
2129   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2130     {
2131       real_requested_width = MAX (column->requested_width, column->button_request);
2132     }
2133   else
2134     {
2135       real_requested_width = column->requested_width;
2136       if (real_requested_width < 0)
2137         real_requested_width = 0;
2138     }
2139
2140   if (column->min_width != -1)
2141     real_requested_width = MAX (real_requested_width, column->min_width);
2142   if (column->max_width != -1)
2143     real_requested_width = MIN (real_requested_width, column->max_width);
2144
2145   return real_requested_width;
2146 }
2147
2148 static gint
2149 gtk_tree_view_get_real_natural_width_from_column (GtkTreeView       *tree_view,
2150                                                   GtkTreeViewColumn *column)
2151 {
2152   GtkTreeViewColumnPrivate *column_priv;
2153   GtkRequisition button_natural_size;
2154   gint column_natural_width;
2155
2156   column_priv = GTK_TREE_VIEW_COLUMN_GET_PRIVATE (column);
2157   column_natural_width = column_priv->natural_width;
2158
2159   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2160     {
2161       gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (column->button),
2162                                             NULL, &button_natural_size);
2163
2164       column_natural_width = MAX (column_natural_width, button_natural_size.width);
2165     }
2166
2167   return column_natural_width;
2168 }
2169
2170 /* GtkWidget::size_allocate helper */
2171 static void
2172 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2173                                      gboolean  *width_changed)
2174 {
2175   GtkTreeView *tree_view;
2176   GList *list, *first_column, *last_column;
2177   GtkTreeViewColumn *column;
2178   GtkAllocation allocation;
2179   gint width = 0, natural_width;
2180   gint extra, extra_per_column, extra_for_last;
2181   gint full_requested_width = 0;
2182   gint full_natural_width = 0;
2183   gint number_of_expand_columns = 0;
2184   gboolean column_changed = FALSE;
2185   gboolean rtl;
2186   gboolean update_expand;
2187
2188   tree_view = GTK_TREE_VIEW (widget);
2189
2190   for (last_column = g_list_last (tree_view->priv->columns);
2191        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2192        last_column = last_column->prev)
2193     ;
2194   if (last_column == NULL)
2195     return;
2196
2197   for (first_column = g_list_first (tree_view->priv->columns);
2198        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2199        first_column = first_column->next)
2200     ;
2201
2202   allocation.y = 0;
2203   allocation.height = tree_view->priv->header_height;
2204
2205   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2206
2207   /* find out how many extra space and expandable columns we have */
2208   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2209     {
2210       column = (GtkTreeViewColumn *)list->data;
2211
2212       if (!column->visible)
2213         continue;
2214
2215       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2216       full_natural_width += gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
2217
2218       if (column->expand)
2219         number_of_expand_columns++;
2220     }
2221
2222   /* Only update the expand value if the width of the widget has changed,
2223    * or the number of expand columns has changed, or if there are no expand
2224    * columns, or if we didn't have an size-allocation yet after the
2225    * last validated node.
2226    */
2227   update_expand = (width_changed && *width_changed == TRUE)
2228       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2229       || number_of_expand_columns == 0
2230       || tree_view->priv->post_validation_flag == TRUE;
2231
2232   tree_view->priv->post_validation_flag = FALSE;
2233
2234   if (!update_expand)
2235     {
2236       extra = tree_view->priv->last_extra_space;
2237       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2238     }
2239   else
2240     {
2241       full_natural_width -= full_requested_width;
2242       extra = MAX (widget->allocation.width - full_requested_width, 0);
2243       natural_width = MIN (extra, full_natural_width);
2244       extra_for_last = 0;
2245
2246       tree_view->priv->last_extra_space = extra;
2247     }
2248
2249   if (number_of_expand_columns > 0)
2250     extra_per_column = extra/number_of_expand_columns;
2251   else
2252     extra_per_column = 0;
2253
2254   if (update_expand)
2255     {
2256       tree_view->priv->last_extra_space_per_column = extra_per_column;
2257       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2258     }
2259
2260   for (list = (rtl ? last_column : first_column);
2261        list != (rtl ? first_column->prev : last_column->next);
2262        list = (rtl ? list->prev : list->next))
2263     {
2264       gint real_requested_width = 0;
2265       gint real_natural_width = 0;
2266       gint old_width;
2267
2268       column = list->data;
2269       old_width = column->width;
2270
2271       if (!column->visible)
2272         continue;
2273
2274       /* We need to handle the dragged button specially.
2275        */
2276       if (column == tree_view->priv->drag_column)
2277         {
2278           GtkAllocation drag_allocation;
2279           gdk_drawable_get_size (tree_view->priv->drag_window,
2280                                  &(drag_allocation.width),
2281                                  &(drag_allocation.height));
2282           drag_allocation.x = 0;
2283           drag_allocation.y = 0;
2284           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2285                                     &drag_allocation);
2286           width += drag_allocation.width;
2287           continue;
2288         }
2289
2290       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2291       real_natural_width = gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
2292       real_natural_width -= real_requested_width;
2293
2294       allocation.x = width;
2295       column->width = real_requested_width;
2296
2297       if (full_natural_width > 0)
2298         column->width += natural_width * real_natural_width / full_natural_width;
2299       if (column->expand)
2300         {
2301           if (number_of_expand_columns == 1)
2302             {
2303               /* We add the remander to the last column as
2304                * */
2305               column->width += extra;
2306             }
2307           else
2308             {
2309               column->width += extra_per_column;
2310               extra -= extra_per_column;
2311               number_of_expand_columns --;
2312             }
2313         }
2314       else if (number_of_expand_columns == 0 &&
2315                list == last_column)
2316         {
2317           column->width += extra;
2318         }
2319
2320       /* In addition to expand, the last column can get even more
2321        * extra space so all available space is filled up.
2322        */
2323       if (extra_for_last > 0 && list == last_column)
2324         column->width += extra_for_last;
2325
2326       g_object_notify (G_OBJECT (column), "width");
2327
2328       allocation.width = column->width;
2329       width += column->width;
2330
2331       if (column->width > old_width)
2332         column_changed = TRUE;
2333
2334       gtk_widget_size_allocate (column->button, &allocation);
2335
2336       if (column->window)
2337         gdk_window_move_resize (column->window,
2338                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2339                                 allocation.y,
2340                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2341     }
2342
2343   /* We change the width here.  The user might have been resizing columns,
2344    * so the total width of the tree view changes.
2345    */
2346   tree_view->priv->width = width;
2347   if (width_changed)
2348     *width_changed = TRUE;
2349
2350   if (column_changed)
2351     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2352 }
2353
2354
2355 static void
2356 gtk_tree_view_size_allocate (GtkWidget     *widget,
2357                              GtkAllocation *allocation)
2358 {
2359   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2360   GList *tmp_list;
2361   gboolean width_changed = FALSE;
2362   gint old_width = widget->allocation.width;
2363
2364   if (allocation->width != widget->allocation.width)
2365     width_changed = TRUE;
2366
2367   widget->allocation = *allocation;
2368
2369   tmp_list = tree_view->priv->children;
2370
2371   while (tmp_list)
2372     {
2373       GtkAllocation allocation;
2374
2375       GtkTreeViewChild *child = tmp_list->data;
2376       tmp_list = tmp_list->next;
2377
2378       /* totally ignore our child's requisition */
2379       allocation.x = child->x;
2380       allocation.y = child->y;
2381       allocation.width = child->width;
2382       allocation.height = child->height;
2383       gtk_widget_size_allocate (child->widget, &allocation);
2384     }
2385
2386   /* We size-allocate the columns first because the width of the
2387    * tree view (used in updating the adjustments below) might change.
2388    */
2389   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2390
2391   tree_view->priv->hadjustment->page_size = allocation->width;
2392   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2393   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2394   tree_view->priv->hadjustment->lower = 0;
2395   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2396
2397   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2398     {
2399       if (allocation->width < tree_view->priv->width)
2400         {
2401           if (tree_view->priv->init_hadjust_value)
2402             {
2403               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2404               tree_view->priv->init_hadjust_value = FALSE;
2405             }
2406           else if (allocation->width != old_width)
2407             {
2408               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2409             }
2410           else
2411             tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value), 0, tree_view->priv->width - allocation->width);
2412         }
2413       else
2414         {
2415           tree_view->priv->hadjustment->value = 0;
2416           tree_view->priv->init_hadjust_value = TRUE;
2417         }
2418     }
2419   else
2420     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2421       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2422
2423   gtk_adjustment_changed (tree_view->priv->hadjustment);
2424
2425   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2426   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2427   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2428   tree_view->priv->vadjustment->lower = 0;
2429   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2430
2431   gtk_adjustment_changed (tree_view->priv->vadjustment);
2432
2433   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2434   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2435     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2436   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2437     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2438                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2439   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2440     gtk_tree_view_top_row_to_dy (tree_view);
2441   else
2442     gtk_tree_view_dy_to_top_row (tree_view);
2443
2444   if (GTK_WIDGET_REALIZED (widget))
2445     {
2446       gdk_window_move_resize (widget->window,
2447                               allocation->x, allocation->y,
2448                               allocation->width, allocation->height);
2449       gdk_window_move_resize (tree_view->priv->header_window,
2450                               - (gint) tree_view->priv->hadjustment->value,
2451                               0,
2452                               MAX (tree_view->priv->width, allocation->width),
2453                               tree_view->priv->header_height);
2454       gdk_window_move_resize (tree_view->priv->bin_window,
2455                               - (gint) tree_view->priv->hadjustment->value,
2456                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2457                               MAX (tree_view->priv->width, allocation->width),
2458                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2459     }
2460
2461   if (tree_view->priv->tree == NULL)
2462     invalidate_empty_focus (tree_view);
2463
2464   if (GTK_WIDGET_REALIZED (widget))
2465     {
2466       gboolean has_expand_column = FALSE;
2467       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2468         {
2469           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2470             {
2471               has_expand_column = TRUE;
2472               break;
2473             }
2474         }
2475
2476       /* This little hack only works if we have an LTR locale, and no column has the  */
2477       if (width_changed)
2478         {
2479           if (tree_view->priv->tree)
2480             update_prelight (tree_view,
2481                              tree_view->priv->event_last_x,
2482                              tree_view->priv->event_last_y);
2483
2484           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2485               ! has_expand_column)
2486             invalidate_last_column (tree_view);
2487           else
2488             gtk_widget_queue_draw (widget);
2489         }
2490     }
2491 }
2492
2493 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2494 static void
2495 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2496 {
2497   if (GTK_WIDGET_CAN_FOCUS (tree_view) && !GTK_WIDGET_HAS_FOCUS (tree_view))
2498     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
2499   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2500 }
2501
2502 static inline gboolean
2503 row_is_separator (GtkTreeView *tree_view,
2504                   GtkTreeIter *iter,
2505                   GtkTreePath *path)
2506 {
2507   gboolean is_separator = FALSE;
2508
2509   if (tree_view->priv->row_separator_func)
2510     {
2511       GtkTreeIter tmpiter;
2512
2513       if (iter)
2514         tmpiter = *iter;
2515       else
2516         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2517
2518       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2519                                                           &tmpiter,
2520                                                           tree_view->priv->row_separator_data);
2521     }
2522
2523   return is_separator;
2524 }
2525
2526 static gboolean
2527 gtk_tree_view_button_press (GtkWidget      *widget,
2528                             GdkEventButton *event)
2529 {
2530   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2531   GList *list;
2532   GtkTreeViewColumn *column = NULL;
2533   gint i;
2534   GdkRectangle background_area;
2535   GdkRectangle cell_area;
2536   gint vertical_separator;
2537   gint horizontal_separator;
2538   gboolean path_is_selectable;
2539   gboolean rtl;
2540
2541   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2542   gtk_tree_view_stop_editing (tree_view, FALSE);
2543   gtk_widget_style_get (widget,
2544                         "vertical-separator", &vertical_separator,
2545                         "horizontal-separator", &horizontal_separator,
2546                         NULL);
2547
2548
2549   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2550    * we're done handling the button press.
2551    */
2552
2553   if (event->window == tree_view->priv->bin_window)
2554     {
2555       GtkRBNode *node;
2556       GtkRBTree *tree;
2557       GtkTreePath *path;
2558       gchar *path_string;
2559       gint depth;
2560       gint new_y;
2561       gint y_offset;
2562       gint dval;
2563       gint pre_val, aft_val;
2564       GtkTreeViewColumn *column = NULL;
2565       GtkCellRenderer *focus_cell = NULL;
2566       gint column_handled_click = FALSE;
2567       gboolean row_double_click = FALSE;
2568       gboolean rtl;
2569       gboolean node_selected;
2570
2571       /* Empty tree? */
2572       if (tree_view->priv->tree == NULL)
2573         {
2574           grab_focus_and_unset_draw_keyfocus (tree_view);
2575           return TRUE;
2576         }
2577
2578       /* are we in an arrow? */
2579       if (tree_view->priv->prelight_node &&
2580           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2581           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2582         {
2583           if (event->button == 1)
2584             {
2585               gtk_grab_add (widget);
2586               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2587               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2588               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2589                                         tree_view->priv->prelight_tree,
2590                                         tree_view->priv->prelight_node,
2591                                         event->x,
2592                                         event->y);
2593             }
2594
2595           grab_focus_and_unset_draw_keyfocus (tree_view);
2596           return TRUE;
2597         }
2598
2599       /* find the node that was clicked */
2600       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2601       if (new_y < 0)
2602         new_y = 0;
2603       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2604
2605       if (node == NULL)
2606         {
2607           /* We clicked in dead space */
2608           grab_focus_and_unset_draw_keyfocus (tree_view);
2609           return TRUE;
2610         }
2611
2612       /* Get the path and the node */
2613       path = _gtk_tree_view_find_path (tree_view, tree, node);
2614       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2615
2616       if (!path_is_selectable)
2617         {
2618           gtk_tree_path_free (path);
2619           grab_focus_and_unset_draw_keyfocus (tree_view);
2620           return TRUE;
2621         }
2622
2623       depth = gtk_tree_path_get_depth (path);
2624       background_area.y = y_offset + event->y;
2625       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2626       background_area.x = 0;
2627
2628
2629       /* Let the column have a chance at selecting it. */
2630       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2631       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2632            list; list = (rtl ? list->prev : list->next))
2633         {
2634           GtkTreeViewColumn *candidate = list->data;
2635
2636           if (!candidate->visible)
2637             continue;
2638
2639           background_area.width = candidate->width;
2640           if ((background_area.x > (gint) event->x) ||
2641               (background_area.x + background_area.width <= (gint) event->x))
2642             {
2643               background_area.x += background_area.width;
2644               continue;
2645             }
2646
2647           /* we found the focus column */
2648           column = candidate;
2649           cell_area = background_area;
2650           cell_area.width -= horizontal_separator;
2651           cell_area.height -= vertical_separator;
2652           cell_area.x += horizontal_separator/2;
2653           cell_area.y += vertical_separator/2;
2654           if (gtk_tree_view_is_expander_column (tree_view, column))
2655             {
2656               if (!rtl)
2657                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2658               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2659
2660               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2661                 {
2662                   if (!rtl)
2663                     cell_area.x += depth * tree_view->priv->expander_size;
2664                   cell_area.width -= depth * tree_view->priv->expander_size;
2665                 }
2666             }
2667           break;
2668         }
2669
2670       if (column == NULL)
2671         {
2672           gtk_tree_path_free (path);
2673           grab_focus_and_unset_draw_keyfocus (tree_view);
2674           return FALSE;
2675         }
2676
2677       tree_view->priv->focus_column = column;
2678
2679       /* decide if we edit */
2680       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2681           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2682         {
2683           GtkTreePath *anchor;
2684           GtkTreeIter iter;
2685
2686           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2687           gtk_tree_view_column_cell_set_cell_data (column,
2688                                                    tree_view->priv->model,
2689                                                    &iter,
2690                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2691                                                    node->children?TRUE:FALSE);
2692
2693           if (tree_view->priv->anchor)
2694             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2695           else
2696             anchor = NULL;
2697
2698           if ((anchor && !gtk_tree_path_compare (anchor, path))
2699               || !_gtk_tree_view_column_has_editable_cell (column))
2700             {
2701               GtkCellEditable *cell_editable = NULL;
2702
2703               /* FIXME: get the right flags */
2704               guint flags = 0;
2705
2706               path_string = gtk_tree_path_to_string (path);
2707
2708               if (_gtk_tree_view_column_cell_event (column,
2709                                                     &cell_editable,
2710                                                     (GdkEvent *)event,
2711                                                     path_string,
2712                                                     &background_area,
2713                                                     &cell_area, flags))
2714                 {
2715                   if (cell_editable != NULL)
2716                     {
2717                       gint left, right;
2718                       GdkRectangle area;
2719
2720                       area = cell_area;
2721                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2722
2723                       area.x += left;
2724                       area.width -= right + left;
2725
2726                       gtk_tree_view_real_start_editing (tree_view,
2727                                                         column,
2728                                                         path,
2729                                                         cell_editable,
2730                                                         &area,
2731                                                         (GdkEvent *)event,
2732                                                         flags);
2733                       g_free (path_string);
2734                       gtk_tree_path_free (path);
2735                       gtk_tree_path_free (anchor);
2736                       return TRUE;
2737                     }
2738                   column_handled_click = TRUE;
2739                 }
2740               g_free (path_string);
2741             }
2742           if (anchor)
2743             gtk_tree_path_free (anchor);
2744         }
2745
2746       /* select */
2747       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2748       pre_val = tree_view->priv->vadjustment->value;
2749
2750       /* we only handle selection modifications on the first button press
2751        */
2752       if (event->type == GDK_BUTTON_PRESS)
2753         {
2754           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2755             tree_view->priv->ctrl_pressed = TRUE;
2756           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2757             tree_view->priv->shift_pressed = TRUE;
2758
2759           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2760           if (focus_cell)
2761             gtk_tree_view_column_focus_cell (column, focus_cell);
2762
2763           if (event->state & GDK_CONTROL_MASK)
2764             {
2765               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2766               gtk_tree_view_real_toggle_cursor_row (tree_view);
2767             }
2768           else if (event->state & GDK_SHIFT_MASK)
2769             {
2770               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2771               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2772             }
2773           else
2774             {
2775               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2776             }
2777
2778           tree_view->priv->ctrl_pressed = FALSE;
2779           tree_view->priv->shift_pressed = FALSE;
2780         }
2781
2782       /* the treeview may have been scrolled because of _set_cursor,
2783        * correct here
2784        */
2785
2786       aft_val = tree_view->priv->vadjustment->value;
2787       dval = pre_val - aft_val;
2788
2789       cell_area.y += dval;
2790       background_area.y += dval;
2791
2792       /* Save press to possibly begin a drag
2793        */
2794       if (!column_handled_click &&
2795           !tree_view->priv->in_grab &&
2796           tree_view->priv->pressed_button < 0)
2797         {
2798           tree_view->priv->pressed_button = event->button;
2799           tree_view->priv->press_start_x = event->x;
2800           tree_view->priv->press_start_y = event->y;
2801
2802           if (tree_view->priv->rubber_banding_enable
2803               && !node_selected
2804               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2805             {
2806               tree_view->priv->press_start_y += tree_view->priv->dy;
2807               tree_view->priv->rubber_band_x = event->x;
2808               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2809               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2810
2811               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2812                 tree_view->priv->rubber_band_ctrl = TRUE;
2813               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2814                 tree_view->priv->rubber_band_shift = TRUE;
2815             }
2816         }
2817
2818       /* Test if a double click happened on the same row. */
2819       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2820         {
2821           if (tree_view->priv->last_button_x != -1)
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 ((event->time < tree_view->priv->last_button_time + double_click_time) &&
2832                   (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2833                   (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2834                 {
2835                   /* We do no longer compare paths of this row and the
2836                    * row clicked previously.  We use the double click
2837                    * distance to decide whether this is a valid click,
2838                    * allowing the mouse to slightly move over another row.
2839                    */
2840                   row_double_click = TRUE;
2841                 }
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           gpointer drag_data;
2885
2886           if (event->type == GDK_2BUTTON_PRESS &&
2887               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2888             {
2889               column->use_resized_width = FALSE;
2890               _gtk_tree_view_column_autosize (tree_view, column);
2891               return TRUE;
2892             }
2893
2894           if (gdk_pointer_grab (column->window, FALSE,
2895                                 GDK_POINTER_MOTION_HINT_MASK |
2896                                 GDK_BUTTON1_MOTION_MASK |
2897                                 GDK_BUTTON_RELEASE_MASK,
2898                                 NULL, NULL, event->time))
2899             return FALSE;
2900
2901           gtk_grab_add (widget);
2902           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2903           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2904
2905           /* block attached dnd signal handler */
2906           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2907           if (drag_data)
2908             g_signal_handlers_block_matched (widget,
2909                                              G_SIGNAL_MATCH_DATA,
2910                                              0, 0, NULL, NULL,
2911                                              drag_data);
2912
2913           tree_view->priv->drag_pos = i;
2914           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2915
2916           if (!GTK_WIDGET_HAS_FOCUS (widget))
2917             gtk_widget_grab_focus (widget);
2918
2919           return TRUE;
2920         }
2921     }
2922   return FALSE;
2923 }
2924
2925 /* GtkWidget::button_release_event helper */
2926 static gboolean
2927 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2928                                           GdkEventButton *event)
2929 {
2930   GtkTreeView *tree_view;
2931   GList *l;
2932   gboolean rtl;
2933
2934   tree_view = GTK_TREE_VIEW (widget);
2935
2936   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2937   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2938   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2939
2940   /* Move the button back */
2941   g_object_ref (tree_view->priv->drag_column->button);
2942   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2943   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2944   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2945   g_object_unref (tree_view->priv->drag_column->button);
2946   gtk_widget_queue_resize (widget);
2947   if (tree_view->priv->drag_column->resizable)
2948     {
2949       gdk_window_raise (tree_view->priv->drag_column->window);
2950       gdk_window_show (tree_view->priv->drag_column->window);
2951     }
2952   else
2953     gdk_window_hide (tree_view->priv->drag_column->window);
2954
2955   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2956
2957   if (rtl)
2958     {
2959       if (tree_view->priv->cur_reorder &&
2960           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2961         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2962                                          tree_view->priv->cur_reorder->right_column);
2963     }
2964   else
2965     {
2966       if (tree_view->priv->cur_reorder &&
2967           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2968         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2969                                          tree_view->priv->cur_reorder->left_column);
2970     }
2971   tree_view->priv->drag_column = NULL;
2972   gdk_window_hide (tree_view->priv->drag_window);
2973
2974   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2975     g_slice_free (GtkTreeViewColumnReorder, l->data);
2976   g_list_free (tree_view->priv->column_drag_info);
2977   tree_view->priv->column_drag_info = NULL;
2978   tree_view->priv->cur_reorder = NULL;
2979
2980   if (tree_view->priv->drag_highlight_window)
2981     gdk_window_hide (tree_view->priv->drag_highlight_window);
2982
2983   /* Reset our flags */
2984   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2985   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2986
2987   return TRUE;
2988 }
2989
2990 /* GtkWidget::button_release_event helper */
2991 static gboolean
2992 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2993                                             GdkEventButton *event)
2994 {
2995   GtkTreeView *tree_view;
2996   gpointer drag_data;
2997
2998   tree_view = GTK_TREE_VIEW (widget);
2999
3000   tree_view->priv->drag_pos = -1;
3001
3002   /* unblock attached dnd signal handler */
3003   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3004   if (drag_data)
3005     g_signal_handlers_unblock_matched (widget,
3006                                        G_SIGNAL_MATCH_DATA,
3007                                        0, 0, NULL, NULL,
3008                                        drag_data);
3009
3010   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3011   gtk_grab_remove (widget);
3012   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3013                               event->time);
3014   return TRUE;
3015 }
3016
3017 static gboolean
3018 gtk_tree_view_button_release (GtkWidget      *widget,
3019                               GdkEventButton *event)
3020 {
3021   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3022
3023   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3024     return gtk_tree_view_button_release_drag_column (widget, event);
3025
3026   if (tree_view->priv->rubber_band_status)
3027     gtk_tree_view_stop_rubber_band (tree_view);
3028
3029   if (tree_view->priv->pressed_button == event->button)
3030     tree_view->priv->pressed_button = -1;
3031
3032   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3033     return gtk_tree_view_button_release_column_resize (widget, event);
3034
3035   if (tree_view->priv->button_pressed_node == NULL)
3036     return FALSE;
3037
3038   if (event->button == 1)
3039     {
3040       gtk_grab_remove (widget);
3041       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3042           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3043         {
3044           GtkTreePath *path = NULL;
3045
3046           path = _gtk_tree_view_find_path (tree_view,
3047                                            tree_view->priv->button_pressed_tree,
3048                                            tree_view->priv->button_pressed_node);
3049           /* Actually activate the node */
3050           if (tree_view->priv->button_pressed_node->children == NULL)
3051             gtk_tree_view_real_expand_row (tree_view, path,
3052                                            tree_view->priv->button_pressed_tree,
3053                                            tree_view->priv->button_pressed_node,
3054                                            FALSE, TRUE);
3055           else
3056             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3057                                              tree_view->priv->button_pressed_tree,
3058                                              tree_view->priv->button_pressed_node, TRUE);
3059           gtk_tree_path_free (path);
3060         }
3061
3062       tree_view->priv->button_pressed_tree = NULL;
3063       tree_view->priv->button_pressed_node = NULL;
3064     }
3065
3066   return TRUE;
3067 }
3068
3069 static gboolean
3070 gtk_tree_view_grab_broken (GtkWidget          *widget,
3071                            GdkEventGrabBroken *event)
3072 {
3073   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3074
3075   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3076     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3077
3078   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3079     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3080
3081   return TRUE;
3082 }
3083
3084 #if 0
3085 static gboolean
3086 gtk_tree_view_configure (GtkWidget *widget,
3087                          GdkEventConfigure *event)
3088 {
3089   GtkTreeView *tree_view;
3090
3091   tree_view = GTK_TREE_VIEW (widget);
3092   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3093
3094   return FALSE;
3095 }
3096 #endif
3097
3098 /* GtkWidget::motion_event function set.
3099  */
3100
3101 static gboolean
3102 coords_are_over_arrow (GtkTreeView *tree_view,
3103                        GtkRBTree   *tree,
3104                        GtkRBNode   *node,
3105                        /* these are in bin window coords */
3106                        gint         x,
3107                        gint         y)
3108 {
3109   GdkRectangle arrow;
3110   gint x2;
3111
3112   if (!GTK_WIDGET_REALIZED (tree_view))
3113     return FALSE;
3114
3115   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3116     return FALSE;
3117
3118   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3119
3120   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3121
3122   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3123
3124   arrow.width = x2 - arrow.x;
3125
3126   return (x >= arrow.x &&
3127           x < (arrow.x + arrow.width) &&
3128           y >= arrow.y &&
3129           y < (arrow.y + arrow.height));
3130 }
3131
3132 static gboolean
3133 auto_expand_timeout (gpointer data)
3134 {
3135   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3136   GtkTreePath *path;
3137
3138   if (tree_view->priv->prelight_node)
3139     {
3140       path = _gtk_tree_view_find_path (tree_view,
3141                                        tree_view->priv->prelight_tree,
3142                                        tree_view->priv->prelight_node);
3143
3144       if (tree_view->priv->prelight_node->children)
3145         gtk_tree_view_collapse_row (tree_view, path);
3146       else
3147         gtk_tree_view_expand_row (tree_view, path, FALSE);
3148
3149       gtk_tree_path_free (path);
3150     }
3151
3152   tree_view->priv->auto_expand_timeout = 0;
3153
3154   return FALSE;
3155 }
3156
3157 static void
3158 remove_auto_expand_timeout (GtkTreeView *tree_view)
3159 {
3160   if (tree_view->priv->auto_expand_timeout != 0)
3161     {
3162       g_source_remove (tree_view->priv->auto_expand_timeout);
3163       tree_view->priv->auto_expand_timeout = 0;
3164     }
3165 }
3166
3167 static void
3168 do_prelight (GtkTreeView *tree_view,
3169              GtkRBTree   *tree,
3170              GtkRBNode   *node,
3171              /* these are in bin_window coords */
3172              gint         x,
3173              gint         y)
3174 {
3175   if (tree_view->priv->prelight_tree == tree &&
3176       tree_view->priv->prelight_node == node)
3177     {
3178       /*  We are still on the same node,
3179           but we might need to take care of the arrow  */
3180
3181       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3182         {
3183           gboolean over_arrow;
3184           gboolean flag_set;
3185
3186           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3187           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3188                                              GTK_TREE_VIEW_ARROW_PRELIT);
3189
3190           if (over_arrow != flag_set)
3191             {
3192               if (over_arrow)
3193                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3194                                         GTK_TREE_VIEW_ARROW_PRELIT);
3195               else
3196                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3197                                           GTK_TREE_VIEW_ARROW_PRELIT);
3198
3199               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3200             }
3201         }
3202
3203       return;
3204     }
3205
3206   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3207     {
3208       /*  Unprelight the old node and arrow  */
3209
3210       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3211                              GTK_RBNODE_IS_PRELIT);
3212
3213       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3214           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3215         {
3216           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3217
3218           gtk_tree_view_draw_arrow (tree_view,
3219                                     tree_view->priv->prelight_tree,
3220                                     tree_view->priv->prelight_node,
3221                                     x,
3222                                     y);
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_draw_arrow (tree_view, tree, node, x, y);
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 update_prelight (GtkTreeView *tree_view,
3304                  gint         x,
3305                  gint         y)
3306 {
3307   int new_y;
3308   GtkRBTree *tree;
3309   GtkRBNode *node;
3310
3311   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3312   if (new_y < 0)
3313     new_y = 0;
3314
3315   _gtk_rbtree_find_offset (tree_view->priv->tree,
3316                            new_y, &tree, &node);
3317
3318   if (node)
3319     prelight_or_select (tree_view, tree, node, x, y);
3320 }
3321
3322 static void
3323 ensure_unprelighted (GtkTreeView *tree_view)
3324 {
3325   do_prelight (tree_view,
3326                NULL, NULL,
3327                -1000, -1000); /* coords not possibly over an arrow */
3328
3329   g_assert (tree_view->priv->prelight_node == NULL);
3330 }
3331
3332
3333
3334
3335 /* Our motion arrow is either a box (in the case of the original spot)
3336  * or an arrow.  It is expander_size wide.
3337  */
3338 /*
3339  * 11111111111111
3340  * 01111111111110
3341  * 00111111111100
3342  * 00011111111000
3343  * 00001111110000
3344  * 00000111100000
3345  * 00000111100000
3346  * 00000111100000
3347  * ~ ~ ~ ~ ~ ~ ~
3348  * 00000111100000
3349  * 00000111100000
3350  * 00000111100000
3351  * 00001111110000
3352  * 00011111111000
3353  * 00111111111100
3354  * 01111111111110
3355  * 11111111111111
3356  */
3357
3358 static void
3359 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3360 {
3361   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3362   GtkWidget *widget = GTK_WIDGET (tree_view);
3363   GdkBitmap *mask = NULL;
3364   gint x;
3365   gint y;
3366   gint width;
3367   gint height;
3368   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3369   GdkWindowAttr attributes;
3370   guint attributes_mask;
3371
3372   if (!reorder ||
3373       reorder->left_column == tree_view->priv->drag_column ||
3374       reorder->right_column == tree_view->priv->drag_column)
3375     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3376   else if (reorder->left_column || reorder->right_column)
3377     {
3378       GdkRectangle visible_rect;
3379       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3380       if (reorder->left_column)
3381         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3382       else
3383         x = reorder->right_column->button->allocation.x;
3384
3385       if (x < visible_rect.x)
3386         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3387       else if (x > visible_rect.x + visible_rect.width)
3388         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3389       else
3390         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3391     }
3392
3393   /* We want to draw the rectangle over the initial location. */
3394   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3395     {
3396       GdkGC *gc;
3397       GdkColor col;
3398
3399       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3400         {
3401           if (tree_view->priv->drag_highlight_window)
3402             {
3403               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3404                                         NULL);
3405               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3406             }
3407
3408           attributes.window_type = GDK_WINDOW_CHILD;
3409           attributes.wclass = GDK_INPUT_OUTPUT;
3410           attributes.x = tree_view->priv->drag_column_x;
3411           attributes.y = 0;
3412           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3413           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3414           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3415           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3416           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3417           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3418           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3419           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3420
3421           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3422           gc = gdk_gc_new (mask);
3423           col.pixel = 1;
3424           gdk_gc_set_foreground (gc, &col);
3425           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3426           col.pixel = 0;
3427           gdk_gc_set_foreground(gc, &col);
3428           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
3429           g_object_unref (gc);
3430
3431           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3432                                          mask, 0, 0);
3433           if (mask) g_object_unref (mask);
3434           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3435         }
3436     }
3437   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3438     {
3439       gint i, j = 1;
3440       GdkGC *gc;
3441       GdkColor col;
3442
3443       width = tree_view->priv->expander_size;
3444
3445       /* Get x, y, width, height of arrow */
3446       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3447       if (reorder->left_column)
3448         {
3449           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3450           height = reorder->left_column->button->allocation.height;
3451         }
3452       else
3453         {
3454           x += reorder->right_column->button->allocation.x - width/2;
3455           height = reorder->right_column->button->allocation.height;
3456         }
3457       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3458       height += tree_view->priv->expander_size;
3459
3460       /* Create the new window */
3461       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3462         {
3463           if (tree_view->priv->drag_highlight_window)
3464             {
3465               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3466                                         NULL);
3467               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3468             }
3469
3470           attributes.window_type = GDK_WINDOW_TEMP;
3471           attributes.wclass = GDK_INPUT_OUTPUT;
3472           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3473           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3474           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3475           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3476           attributes.x = x;
3477           attributes.y = y;
3478           attributes.width = width;
3479           attributes.height = height;
3480           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3481                                                                    &attributes, attributes_mask);
3482           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3483
3484           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3485           gc = gdk_gc_new (mask);
3486           col.pixel = 1;
3487           gdk_gc_set_foreground (gc, &col);
3488           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3489
3490           /* Draw the 2 arrows as per above */
3491           col.pixel = 0;
3492           gdk_gc_set_foreground (gc, &col);
3493           for (i = 0; i < width; i ++)
3494             {
3495               if (i == (width/2 - 1))
3496                 continue;
3497               gdk_draw_line (mask, gc, i, j, i, height - j);
3498               if (i < (width/2 - 1))
3499                 j++;
3500               else
3501                 j--;
3502             }
3503           g_object_unref (gc);
3504           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3505                                          mask, 0, 0);
3506           if (mask) g_object_unref (mask);
3507         }
3508
3509       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3510       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3511     }
3512   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3513            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3514     {
3515       gint i, j = 1;
3516       GdkGC *gc;
3517       GdkColor col;
3518
3519       width = tree_view->priv->expander_size;
3520
3521       /* Get x, y, width, height of arrow */
3522       width = width/2; /* remember, the arrow only takes half the available width */
3523       gdk_window_get_origin (widget->window, &x, &y);
3524       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3525         x += widget->allocation.width - width;
3526
3527       if (reorder->left_column)
3528         height = reorder->left_column->button->allocation.height;
3529       else
3530         height = reorder->right_column->button->allocation.height;
3531
3532       y -= tree_view->priv->expander_size;
3533       height += 2*tree_view->priv->expander_size;
3534
3535       /* Create the new window */
3536       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3537           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3538         {
3539           if (tree_view->priv->drag_highlight_window)
3540             {
3541               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3542                                         NULL);
3543               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3544             }
3545
3546           attributes.window_type = GDK_WINDOW_TEMP;
3547           attributes.wclass = GDK_INPUT_OUTPUT;
3548           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3549           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3550           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3551           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3552           attributes.x = x;
3553           attributes.y = y;
3554           attributes.width = width;
3555           attributes.height = height;
3556           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3557           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3558
3559           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3560           gc = gdk_gc_new (mask);
3561           col.pixel = 1;
3562           gdk_gc_set_foreground (gc, &col);
3563           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3564
3565           /* Draw the 2 arrows as per above */
3566           col.pixel = 0;
3567           gdk_gc_set_foreground (gc, &col);
3568           j = tree_view->priv->expander_size;
3569           for (i = 0; i < width; i ++)
3570             {
3571               gint k;
3572               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3573                 k = width - i - 1;
3574               else
3575                 k = i;
3576               gdk_draw_line (mask, gc, k, j, k, height - j);
3577               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3578               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3579               j--;
3580             }
3581           g_object_unref (gc);
3582           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3583                                          mask, 0, 0);
3584           if (mask) g_object_unref (mask);
3585         }
3586
3587       tree_view->priv->drag_column_window_state = arrow_type;
3588       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3589    }
3590   else
3591     {
3592       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3593       gdk_window_hide (tree_view->priv->drag_highlight_window);
3594       return;
3595     }
3596
3597   gdk_window_show (tree_view->priv->drag_highlight_window);
3598   gdk_window_raise (tree_view->priv->drag_highlight_window);
3599 }
3600
3601 static gboolean
3602 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3603                                     GdkEventMotion *event)
3604 {
3605   gint x;
3606   gint new_width;
3607   GtkTreeViewColumn *column;
3608   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3609
3610   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3611
3612   if (event->is_hint || event->window != widget->window)
3613     gtk_widget_get_pointer (widget, &x, NULL);
3614   else
3615     x = event->x;
3616
3617   if (tree_view->priv->hadjustment)
3618     x += tree_view->priv->hadjustment->value;
3619
3620   new_width = gtk_tree_view_new_column_width (tree_view,
3621                                               tree_view->priv->drag_pos, &x);
3622   if (x != tree_view->priv->x_drag &&
3623       (new_width != column->fixed_width))
3624     {
3625       column->use_resized_width = TRUE;
3626       column->resized_width = new_width;
3627       if (column->expand)
3628         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3629       gtk_widget_queue_resize (widget);
3630     }
3631
3632   return FALSE;
3633 }
3634
3635
3636 static void
3637 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3638 {
3639   GtkTreeViewColumnReorder *reorder = NULL;
3640   GList *list;
3641   gint mouse_x;
3642
3643   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3644   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3645     {
3646       reorder = (GtkTreeViewColumnReorder *) list->data;
3647       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3648         break;
3649       reorder = NULL;
3650     }
3651
3652   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3653       return;*/
3654
3655   tree_view->priv->cur_reorder = reorder;
3656   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3657 }
3658
3659 static void
3660 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3661 {
3662   GdkRectangle visible_rect;
3663   gint y;
3664   gint offset;
3665   gfloat value;
3666
3667   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3668   y += tree_view->priv->dy;
3669
3670   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3671
3672   /* see if we are near the edge. */
3673   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3674   if (offset > 0)
3675     {
3676       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3677       if (offset < 0)
3678         return;
3679     }
3680
3681   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3682                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3683   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3684 }
3685
3686 static gboolean
3687 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3688 {
3689   GdkRectangle visible_rect;
3690   gint x;
3691   gint offset;
3692   gfloat value;
3693
3694   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3695
3696   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3697
3698   /* See if we are near the edge. */
3699   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3700   if (offset > 0)
3701     {
3702       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3703       if (offset < 0)
3704         return TRUE;
3705     }
3706   offset = offset/3;
3707
3708   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3709                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3710   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3711
3712   return TRUE;
3713
3714 }
3715
3716 static gboolean
3717 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3718                                   GdkEventMotion *event)
3719 {
3720   GtkTreeView *tree_view = (GtkTreeView *) widget;
3721   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3722   gint x, y;
3723
3724   /* Sanity Check */
3725   if ((column == NULL) ||
3726       (event->window != tree_view->priv->drag_window))
3727     return FALSE;
3728
3729   /* Handle moving the header */
3730   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3731   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3732              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3733   gdk_window_move (tree_view->priv->drag_window, x, y);
3734
3735   /* autoscroll, if needed */
3736   gtk_tree_view_horizontal_autoscroll (tree_view);
3737   /* Update the current reorder position and arrow; */
3738   gtk_tree_view_update_current_reorder (tree_view);
3739
3740   return TRUE;
3741 }
3742
3743 static void
3744 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3745 {
3746   remove_scroll_timeout (tree_view);
3747   gtk_grab_remove (GTK_WIDGET (tree_view));
3748
3749   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3750     {
3751       GtkTreePath *tmp_path;
3752
3753       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3754
3755       /* The anchor path should be set to the start path */
3756       tmp_path = _gtk_tree_view_find_path (tree_view,
3757                                            tree_view->priv->rubber_band_start_tree,
3758                                            tree_view->priv->rubber_band_start_node);
3759
3760       if (tree_view->priv->anchor)
3761         gtk_tree_row_reference_free (tree_view->priv->anchor);
3762
3763       tree_view->priv->anchor =
3764         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3765                                           tree_view->priv->model,
3766                                           tmp_path);
3767
3768       gtk_tree_path_free (tmp_path);
3769
3770       /* ... and the cursor to the end path */
3771       tmp_path = _gtk_tree_view_find_path (tree_view,
3772                                            tree_view->priv->rubber_band_end_tree,
3773                                            tree_view->priv->rubber_band_end_node);
3774       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3775       gtk_tree_path_free (tmp_path);
3776
3777       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3778     }
3779
3780   /* Clear status variables */
3781   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3782   tree_view->priv->rubber_band_shift = 0;
3783   tree_view->priv->rubber_band_ctrl = 0;
3784
3785   tree_view->priv->rubber_band_start_node = NULL;
3786   tree_view->priv->rubber_band_start_tree = NULL;
3787   tree_view->priv->rubber_band_end_node = NULL;
3788   tree_view->priv->rubber_band_end_tree = NULL;
3789 }
3790
3791 static void
3792 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3793                                                  GtkRBTree   *start_tree,
3794                                                  GtkRBNode   *start_node,
3795                                                  GtkRBTree   *end_tree,
3796                                                  GtkRBNode   *end_node,
3797                                                  gboolean     select,
3798                                                  gboolean     skip_start,
3799                                                  gboolean     skip_end)
3800 {
3801   if (start_node == end_node)
3802     return;
3803
3804   /* We skip the first node and jump inside the loop */
3805   if (skip_start)
3806     goto skip_first;
3807
3808   do
3809     {
3810       /* Small optimization by assuming insensitive nodes are never
3811        * selected.
3812        */
3813       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3814         {
3815           GtkTreePath *path;
3816           gboolean selectable;
3817
3818           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3819           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3820           gtk_tree_path_free (path);
3821
3822           if (!selectable)
3823             goto node_not_selectable;
3824         }
3825
3826       if (select)
3827         {
3828           if (tree_view->priv->rubber_band_shift)
3829             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3830           else if (tree_view->priv->rubber_band_ctrl)
3831             {
3832               /* Toggle the selection state */
3833               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3834                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3835               else
3836                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3837             }
3838           else
3839             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3840         }
3841       else
3842         {
3843           /* Mirror the above */
3844           if (tree_view->priv->rubber_band_shift)
3845             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3846           else if (tree_view->priv->rubber_band_ctrl)
3847             {
3848               /* Toggle the selection state */
3849               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3850                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3851               else
3852                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3853             }
3854           else
3855             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3856         }
3857
3858       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3859
3860 node_not_selectable:
3861       if (start_node == end_node)
3862         break;
3863
3864 skip_first:
3865
3866       if (start_node->children)
3867         {
3868           start_tree = start_node->children;
3869           start_node = start_tree->root;
3870           while (start_node->left != start_tree->nil)
3871             start_node = start_node->left;
3872         }
3873       else
3874         {
3875           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3876
3877           if (!start_tree)
3878             /* Ran out of tree */
3879             break;
3880         }
3881
3882       if (skip_end && start_node == end_node)
3883         break;
3884     }
3885   while (TRUE);
3886 }
3887
3888 static void
3889 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3890 {
3891   GtkRBTree *start_tree, *end_tree;
3892   GtkRBNode *start_node, *end_node;
3893
3894   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
3895   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
3896
3897   /* Handle the start area first */
3898   if (!tree_view->priv->rubber_band_start_node)
3899     {
3900       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3901                                                        start_tree,
3902                                                        start_node,
3903                                                        end_tree,
3904                                                        end_node,
3905                                                        TRUE,
3906                                                        FALSE,
3907                                                        FALSE);
3908     }
3909   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3910            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3911     {
3912       /* New node is above the old one; selection became bigger */
3913       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3914                                                        start_tree,
3915                                                        start_node,
3916                                                        tree_view->priv->rubber_band_start_tree,
3917                                                        tree_view->priv->rubber_band_start_node,
3918                                                        TRUE,
3919                                                        FALSE,
3920                                                        TRUE);
3921     }
3922   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3923            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3924     {
3925       /* New node is below the old one; selection became smaller */
3926       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3927                                                        tree_view->priv->rubber_band_start_tree,
3928                                                        tree_view->priv->rubber_band_start_node,
3929                                                        start_tree,
3930                                                        start_node,
3931                                                        FALSE,
3932                                                        FALSE,
3933                                                        TRUE);
3934     }
3935
3936   tree_view->priv->rubber_band_start_tree = start_tree;
3937   tree_view->priv->rubber_band_start_node = start_node;
3938
3939   /* Next, handle the end area */
3940   if (!tree_view->priv->rubber_band_end_node)
3941     {
3942       /* In the event this happens, start_node was also NULL; this case is
3943        * handled above.
3944        */
3945     }
3946   else if (!end_node)
3947     {
3948       /* Find the last node in the tree */
3949       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3950                                &end_tree, &end_node);
3951
3952       /* Selection reached end of the tree */
3953       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3954                                                        tree_view->priv->rubber_band_end_tree,
3955                                                        tree_view->priv->rubber_band_end_node,
3956                                                        end_tree,
3957                                                        end_node,
3958                                                        TRUE,
3959                                                        TRUE,
3960                                                        FALSE);
3961     }
3962   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3963            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3964     {
3965       /* New node is below the old one; selection became bigger */
3966       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3967                                                        tree_view->priv->rubber_band_end_tree,
3968                                                        tree_view->priv->rubber_band_end_node,
3969                                                        end_tree,
3970                                                        end_node,
3971                                                        TRUE,
3972                                                        TRUE,
3973                                                        FALSE);
3974     }
3975   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3976            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3977     {
3978       /* New node is above the old one; selection became smaller */
3979       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3980                                                        end_tree,
3981                                                        end_node,
3982                                                        tree_view->priv->rubber_band_end_tree,
3983                                                        tree_view->priv->rubber_band_end_node,
3984                                                        FALSE,
3985                                                        TRUE,
3986                                                        FALSE);
3987     }
3988
3989   tree_view->priv->rubber_band_end_tree = end_tree;
3990   tree_view->priv->rubber_band_end_node = end_node;
3991 }
3992
3993 static void
3994 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
3995 {
3996   gint x, y;
3997   GdkRectangle old_area;
3998   GdkRectangle new_area;
3999   GdkRectangle common;
4000   GdkRegion *invalid_region;
4001
4002   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4003   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4004   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4005   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4006
4007   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4008
4009   x = MAX (x, 0);
4010   y = MAX (y, 0) + tree_view->priv->dy;
4011
4012   new_area.x = MIN (tree_view->priv->press_start_x, x);
4013   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4014   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4015   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4016
4017   invalid_region = gdk_region_rectangle (&old_area);
4018   gdk_region_union_with_rect (invalid_region, &new_area);
4019
4020   gdk_rectangle_intersect (&old_area, &new_area, &common);
4021   if (common.width > 2 && common.height > 2)
4022     {
4023       GdkRegion *common_region;
4024
4025       /* make sure the border is invalidated */
4026       common.x += 1;
4027       common.y += 1;
4028       common.width -= 2;
4029       common.height -= 2;
4030
4031       common_region = gdk_region_rectangle (&common);
4032
4033       gdk_region_subtract (invalid_region, common_region);
4034       gdk_region_destroy (common_region);
4035     }
4036
4037   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4038
4039   gdk_region_destroy (invalid_region);
4040
4041   tree_view->priv->rubber_band_x = x;
4042   tree_view->priv->rubber_band_y = y;
4043
4044   gtk_tree_view_update_rubber_band_selection (tree_view);
4045 }
4046
4047 static void
4048 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4049                                 GdkRectangle *area)
4050 {
4051   cairo_t *cr;
4052   GdkRectangle rect;
4053   GdkRectangle rubber_rect;
4054
4055   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4056   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4057   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4058   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4059
4060   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4061     return;
4062
4063   cr = gdk_cairo_create (tree_view->priv->bin_window);
4064   cairo_set_line_width (cr, 1.0);
4065
4066   cairo_set_source_rgba (cr,
4067                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4068                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4069                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4070                          .25);
4071
4072   gdk_cairo_rectangle (cr, &rect);
4073   cairo_clip (cr);
4074   cairo_paint (cr);
4075
4076   cairo_set_source_rgb (cr,
4077                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4078                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4079                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4080
4081   cairo_rectangle (cr,
4082                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4083                    rubber_rect.width - 1, rubber_rect.height - 1);
4084   cairo_stroke (cr);
4085
4086   cairo_destroy (cr);
4087 }
4088
4089 static gboolean
4090 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4091                                  GdkEventMotion *event)
4092 {
4093   GtkTreeView *tree_view;
4094   GtkRBTree *tree;
4095   GtkRBNode *node;
4096   gint new_y;
4097
4098   tree_view = (GtkTreeView *) widget;
4099
4100   if (tree_view->priv->tree == NULL)
4101     return FALSE;
4102
4103   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4104     {
4105       gtk_grab_add (GTK_WIDGET (tree_view));
4106       gtk_tree_view_update_rubber_band (tree_view);
4107
4108       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4109     }
4110   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4111     {
4112       gtk_tree_view_update_rubber_band (tree_view);
4113
4114       add_scroll_timeout (tree_view);
4115     }
4116
4117   /* only check for an initiated drag when a button is pressed */
4118   if (tree_view->priv->pressed_button >= 0
4119       && !tree_view->priv->rubber_band_status)
4120     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4121
4122   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4123   if (new_y < 0)
4124     new_y = 0;
4125
4126   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4127
4128   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4129   if ((tree_view->priv->button_pressed_node != NULL) &&
4130       (tree_view->priv->button_pressed_node != node))
4131     node = NULL;
4132
4133   tree_view->priv->event_last_x = event->x;
4134   tree_view->priv->event_last_y = event->y;
4135
4136   prelight_or_select (tree_view, tree, node, event->x, event->y);
4137
4138   return TRUE;
4139 }
4140
4141 static gboolean
4142 gtk_tree_view_motion (GtkWidget      *widget,
4143                       GdkEventMotion *event)
4144 {
4145   GtkTreeView *tree_view;
4146
4147   tree_view = (GtkTreeView *) widget;
4148
4149   /* Resizing a column */
4150   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4151     return gtk_tree_view_motion_resize_column (widget, event);
4152
4153   /* Drag column */
4154   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4155     return gtk_tree_view_motion_drag_column (widget, event);
4156
4157   /* Sanity check it */
4158   if (event->window == tree_view->priv->bin_window)
4159     return gtk_tree_view_motion_bin_window (widget, event);
4160
4161   return FALSE;
4162 }
4163
4164 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4165  * the tree is empty.
4166  */
4167 static void
4168 invalidate_empty_focus (GtkTreeView *tree_view)
4169 {
4170   GdkRectangle area;
4171
4172   if (!GTK_WIDGET_HAS_FOCUS (tree_view))
4173     return;
4174
4175   area.x = 0;
4176   area.y = 0;
4177   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4178   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4179 }
4180
4181 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4182  * is empty.
4183  */
4184 static void
4185 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4186 {
4187   gint w, h;
4188
4189   if (!GTK_WIDGET_HAS_FOCUS (tree_view))
4190     return;
4191
4192   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4193
4194   w -= 2;
4195   h -= 2;
4196
4197   if (w > 0 && h > 0)
4198     gtk_paint_focus (GTK_WIDGET (tree_view)->style,
4199                      tree_view->priv->bin_window,
4200                      GTK_WIDGET_STATE (tree_view),
4201                      clip_area,
4202                      GTK_WIDGET (tree_view),
4203                      NULL,
4204                      1, 1, w, h);
4205 }
4206
4207 static void
4208 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4209                                GdkEventExpose *event,
4210                                gint            n_visible_columns)
4211 {
4212   GList *list = tree_view->priv->columns;
4213   gint i = 0;
4214   gint current_x = 0;
4215
4216   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4217       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4218     return;
4219
4220   /* Only draw the lines for visible rows and columns */
4221   for (list = tree_view->priv->columns; list; list = list->next, i++)
4222     {
4223       GtkTreeViewColumn *column = list->data;
4224
4225       /* We don't want a line for the last column */
4226       if (i == n_visible_columns - 1)
4227         break;
4228
4229       if (! column->visible)
4230         continue;
4231
4232       current_x += column->width;
4233
4234       gdk_draw_line (event->window,
4235                      tree_view->priv->grid_line_gc,
4236                      current_x - 1, 0,
4237                      current_x - 1, tree_view->priv->height);
4238     }
4239 }
4240
4241 /* Warning: Very scary function.
4242  * Modify at your own risk
4243  *
4244  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4245  * FIXME: It's not...
4246  */
4247 static gboolean
4248 gtk_tree_view_bin_expose (GtkWidget      *widget,
4249                           GdkEventExpose *event)
4250 {
4251   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4252   GtkTreePath *path;
4253   GtkRBTree *tree;
4254   GList *list;
4255   GtkRBNode *node;
4256   GtkRBNode *cursor = NULL;
4257   GtkRBTree *cursor_tree = NULL;
4258   GtkRBNode *drag_highlight = NULL;
4259   GtkRBTree *drag_highlight_tree = NULL;
4260   GtkTreeIter iter;
4261   gint new_y;
4262   gint y_offset, cell_offset;
4263   gint max_height;
4264   gint depth;
4265   GdkRectangle background_area;
4266   GdkRectangle cell_area;
4267   guint flags;
4268   gint highlight_x;
4269   gint expander_cell_width;
4270   gint bin_window_width;
4271   gint bin_window_height;
4272   GtkTreePath *cursor_path;
4273   GtkTreePath *drag_dest_path;
4274   GList *first_column, *last_column;
4275   gint vertical_separator;
4276   gint horizontal_separator;
4277   gint focus_line_width;
4278   gboolean allow_rules;
4279   gboolean has_special_cell;
4280   gboolean rtl;
4281   gint n_visible_columns;
4282   gint pointer_x, pointer_y;
4283   gint grid_line_width;
4284   gboolean got_pointer = FALSE;
4285   gboolean row_ending_details;
4286   gboolean draw_vgrid_lines, draw_hgrid_lines;
4287
4288   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4289
4290   gtk_widget_style_get (widget,
4291                         "horizontal-separator", &horizontal_separator,
4292                         "vertical-separator", &vertical_separator,
4293                         "allow-rules", &allow_rules,
4294                         "focus-line-width", &focus_line_width,
4295                         "row-ending-details", &row_ending_details,
4296                         NULL);
4297
4298   if (tree_view->priv->tree == NULL)
4299     {
4300       draw_empty_focus (tree_view, &event->area);
4301       return TRUE;
4302     }
4303
4304   /* clip event->area to the visible area */
4305   if (event->area.height < 0)
4306     return TRUE;
4307
4308   validate_visible_area (tree_view);
4309
4310   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4311
4312   if (new_y < 0)
4313     new_y = 0;
4314   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4315   gdk_drawable_get_size (tree_view->priv->bin_window,
4316                          &bin_window_width, &bin_window_height);
4317
4318   if (tree_view->priv->height < bin_window_height)
4319     {
4320       gtk_paint_flat_box (widget->style,
4321                           event->window,
4322                           widget->state,
4323                           GTK_SHADOW_NONE,
4324                           &event->area,
4325                           widget,
4326                           "cell_even",
4327                           0, tree_view->priv->height,
4328                           bin_window_width,
4329                           bin_window_height - tree_view->priv->height);
4330     }
4331
4332   if (node == NULL)
4333     return TRUE;
4334
4335   /* find the path for the node */
4336   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4337                                    tree,
4338                                    node);
4339   gtk_tree_model_get_iter (tree_view->priv->model,
4340                            &iter,
4341                            path);
4342   depth = gtk_tree_path_get_depth (path);
4343   gtk_tree_path_free (path);
4344
4345   cursor_path = NULL;
4346   drag_dest_path = NULL;
4347
4348   if (tree_view->priv->cursor)
4349     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4350
4351   if (cursor_path)
4352     _gtk_tree_view_find_node (tree_view, cursor_path,
4353                               &cursor_tree, &cursor);
4354
4355   if (tree_view->priv->drag_dest_row)
4356     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4357
4358   if (drag_dest_path)
4359     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4360                               &drag_highlight_tree, &drag_highlight);
4361
4362   draw_vgrid_lines =
4363     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4364     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4365   draw_hgrid_lines =
4366     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4367     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4368
4369   if (draw_vgrid_lines || draw_hgrid_lines)
4370     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4371
4372   n_visible_columns = 0;
4373   for (list = tree_view->priv->columns; list; list = list->next)
4374     {
4375       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4376         continue;
4377       n_visible_columns ++;
4378     }
4379
4380   /* Find the last column */
4381   for (last_column = g_list_last (tree_view->priv->columns);
4382        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4383        last_column = last_column->prev)
4384     ;
4385
4386   /* and the first */
4387   for (first_column = g_list_first (tree_view->priv->columns);
4388        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4389        first_column = first_column->next)
4390     ;
4391
4392   /* Actually process the expose event.  To do this, we want to
4393    * start at the first node of the event, and walk the tree in
4394    * order, drawing each successive node.
4395    */
4396
4397   do
4398     {
4399       gboolean parity;
4400       gboolean is_separator = FALSE;
4401       gboolean is_first = FALSE;
4402       gboolean is_last = FALSE;
4403
4404       is_separator = row_is_separator (tree_view, &iter, NULL);
4405
4406       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4407
4408       cell_offset = 0;
4409       highlight_x = 0; /* should match x coord of first cell */
4410       expander_cell_width = 0;
4411
4412       background_area.y = y_offset + event->area.y;
4413       background_area.height = max_height;
4414
4415       flags = 0;
4416
4417       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4418         flags |= GTK_CELL_RENDERER_PRELIT;
4419
4420       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4421         flags |= GTK_CELL_RENDERER_SELECTED;
4422
4423       parity = _gtk_rbtree_node_find_parity (tree, node);
4424
4425       /* we *need* to set cell data on all cells before the call
4426        * to _has_special_cell, else _has_special_cell() does not
4427        * return a correct value.
4428        */
4429       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4430            list;
4431            list = (rtl ? list->prev : list->next))
4432         {
4433           GtkTreeViewColumn *column = list->data;
4434           gtk_tree_view_column_cell_set_cell_data (column,
4435                                                    tree_view->priv->model,
4436                                                    &iter,
4437                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4438                                                    node->children?TRUE:FALSE);
4439         }
4440
4441       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4442
4443       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4444            list;
4445            list = (rtl ? list->prev : list->next))
4446         {
4447           GtkTreeViewColumn *column = list->data;
4448           const gchar *detail = NULL;
4449           GtkStateType state;
4450
4451           if (!column->visible)
4452             continue;
4453
4454           if (cell_offset > event->area.x + event->area.width ||
4455               cell_offset + column->width < event->area.x)
4456             {
4457               cell_offset += column->width;
4458               continue;
4459             }
4460
4461           if (column->show_sort_indicator)
4462             flags |= GTK_CELL_RENDERER_SORTED;
4463           else
4464             flags &= ~GTK_CELL_RENDERER_SORTED;
4465
4466           if (cursor == node)
4467             flags |= GTK_CELL_RENDERER_FOCUSED;
4468           else
4469             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4470
4471           background_area.x = cell_offset;
4472           background_area.width = column->width;
4473
4474           cell_area = background_area;
4475           cell_area.y += vertical_separator / 2;
4476           cell_area.x += horizontal_separator / 2;
4477           cell_area.height -= vertical_separator;
4478           cell_area.width -= horizontal_separator;
4479
4480           if (draw_vgrid_lines)
4481             {
4482               if (list == first_column)
4483                 {
4484                   cell_area.width -= grid_line_width / 2;
4485                 }
4486               else if (list == last_column)
4487                 {
4488                   cell_area.x += grid_line_width / 2;
4489                   cell_area.width -= grid_line_width / 2;
4490                 }
4491               else
4492                 {
4493                   cell_area.x += grid_line_width / 2;
4494                   cell_area.width -= grid_line_width;
4495                 }
4496             }
4497
4498           if (draw_hgrid_lines)
4499             {
4500               cell_area.y += grid_line_width / 2;
4501               cell_area.height -= grid_line_width;
4502             }
4503
4504           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
4505             {
4506               cell_offset += column->width;
4507               continue;
4508             }
4509
4510           gtk_tree_view_column_cell_set_cell_data (column,
4511                                                    tree_view->priv->model,
4512                                                    &iter,
4513                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4514                                                    node->children?TRUE:FALSE);
4515
4516           /* Select the detail for drawing the cell.  relevant
4517            * factors are parity, sortedness, and whether to
4518            * display rules.
4519            */
4520           if (allow_rules && tree_view->priv->has_rules)
4521             {
4522               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4523                   n_visible_columns >= 3)
4524                 {
4525                   if (parity)
4526                     detail = "cell_odd_ruled_sorted";
4527                   else
4528                     detail = "cell_even_ruled_sorted";
4529                 }
4530               else
4531                 {
4532                   if (parity)
4533                     detail = "cell_odd_ruled";
4534                   else
4535                     detail = "cell_even_ruled";
4536                 }
4537             }
4538           else
4539             {
4540               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4541                   n_visible_columns >= 3)
4542                 {
4543                   if (parity)
4544                     detail = "cell_odd_sorted";
4545                   else
4546                     detail = "cell_even_sorted";
4547                 }
4548               else
4549                 {
4550                   if (parity)
4551                     detail = "cell_odd";
4552                   else
4553                     detail = "cell_even";
4554                 }
4555             }
4556
4557           g_assert (detail);
4558
4559           if (widget->state == GTK_STATE_INSENSITIVE)
4560             state = GTK_STATE_INSENSITIVE;
4561           else if (flags & GTK_CELL_RENDERER_SELECTED)
4562             state = GTK_STATE_SELECTED;
4563           else
4564             state = GTK_STATE_NORMAL;
4565
4566           /* Draw background */
4567           if (row_ending_details)
4568             {
4569               char new_detail[128];
4570
4571               is_first = (rtl ? !list->next : !list->prev);
4572               is_last = (rtl ? !list->prev : !list->next);
4573
4574               /* (I don't like the snprintfs either, but couldn't find a
4575                * less messy way).
4576                */
4577               if (is_first && is_last)
4578                 g_snprintf (new_detail, 127, "%s", detail);
4579               else if (is_first)
4580                 g_snprintf (new_detail, 127, "%s_start", detail);
4581               else if (is_last)
4582                 g_snprintf (new_detail, 127, "%s_end", detail);
4583               else
4584                 g_snprintf (new_detail, 128, "%s_middle", detail);
4585
4586               gtk_paint_flat_box (widget->style,
4587                                   event->window,
4588                                   state,
4589                                   GTK_SHADOW_NONE,
4590                                   &event->area,
4591                                   widget,
4592                                   new_detail,
4593                                   background_area.x,
4594                                   background_area.y,
4595                                   background_area.width,
4596                                   background_area.height);
4597             }
4598           else
4599             {
4600               gtk_paint_flat_box (widget->style,
4601                                   event->window,
4602                                   state,
4603                                   GTK_SHADOW_NONE,
4604                                   &event->area,
4605                                   widget,
4606                                   detail,
4607                                   background_area.x,
4608                                   background_area.y,
4609                                   background_area.width,
4610                                   background_area.height);
4611             }
4612
4613           if (draw_hgrid_lines)
4614             {
4615               if (background_area.y > 0)
4616                 gdk_draw_line (event->window,
4617                                tree_view->priv->grid_line_gc,
4618                                background_area.x, background_area.y,
4619                                background_area.x + background_area.width,
4620                                background_area.y);
4621
4622               if (y_offset + max_height >= event->area.height)
4623                 gdk_draw_line (event->window,
4624                                tree_view->priv->grid_line_gc,
4625                                background_area.x, background_area.y + max_height,
4626                                background_area.x + background_area.width,
4627                                background_area.y + max_height);
4628             }
4629
4630           if (gtk_tree_view_is_expander_column (tree_view, column))
4631             {
4632               if (!rtl)
4633                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4634               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4635
4636               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4637                 {
4638                   if (!rtl)
4639                     cell_area.x += depth * tree_view->priv->expander_size;
4640                   cell_area.width -= depth * tree_view->priv->expander_size;
4641                 }
4642
4643               /* If we have an expander column, the highlight underline
4644                * starts with that column, so that it indicates which
4645                * level of the tree we're dropping at.
4646                */
4647               highlight_x = cell_area.x;
4648               expander_cell_width = cell_area.width;
4649
4650               if (is_separator)
4651                 gtk_paint_hline (widget->style,
4652                                  event->window,
4653                                  state,
4654                                  &cell_area,
4655                                  widget,
4656                                  NULL,
4657                                  cell_area.x,
4658                                  cell_area.x + cell_area.width,
4659                                  cell_area.y + cell_area.height / 2);
4660               else
4661                 _gtk_tree_view_column_cell_render (column,
4662                                                    event->window,
4663                                                    &background_area,
4664                                                    &cell_area,
4665                                                    &event->area,
4666                                                    flags);
4667               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4668                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4669                 {
4670                   if (!got_pointer)
4671                     {
4672                       gdk_window_get_pointer (tree_view->priv->bin_window,
4673                                               &pointer_x, &pointer_y, NULL);
4674                       got_pointer = TRUE;
4675                     }
4676
4677                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4678                                             tree,
4679                                             node,
4680                                             pointer_x, pointer_y);
4681                 }
4682             }
4683           else
4684             {
4685               if (is_separator)
4686                 gtk_paint_hline (widget->style,
4687                                  event->window,
4688                                  state,
4689                                  &cell_area,
4690                                  widget,
4691                                  NULL,
4692                                  cell_area.x,
4693                                  cell_area.x + cell_area.width,
4694                                  cell_area.y + cell_area.height / 2);
4695               else
4696                 _gtk_tree_view_column_cell_render (column,
4697                                                    event->window,
4698                                                    &background_area,
4699                                                    &cell_area,
4700                                                    &event->area,
4701                                                    flags);
4702             }
4703
4704           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4705               tree_view->priv->tree_lines_enabled)
4706             {
4707               gint x = background_area.x;
4708               gint mult = rtl ? -1 : 1;
4709               gint y0 = background_area.y;
4710               gint y1 = background_area.y + background_area.height/2;
4711               gint y2 = background_area.y + background_area.height;
4712
4713               if (rtl)
4714                 x += background_area.width - 1;
4715
4716               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4717                   && depth > 1)
4718                 {
4719                   gdk_draw_line (event->window,
4720                                  tree_view->priv->tree_line_gc,
4721                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4722                                  y1,
4723                                  x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4724                                  y1);
4725                 }
4726               else if (depth > 1)
4727                 {
4728                   gdk_draw_line (event->window,
4729                                  tree_view->priv->tree_line_gc,
4730                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4731                                  y1,
4732                                  x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4733                                  y1);
4734                 }
4735
4736               if (depth > 1)
4737                 {
4738                   gint i;
4739                   GtkRBNode *tmp_node;
4740                   GtkRBTree *tmp_tree;
4741
4742                   if (!_gtk_rbtree_next (tree, node))
4743                     gdk_draw_line (event->window,
4744                                    tree_view->priv->tree_line_gc,
4745                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4746                                    y0,
4747                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4748                                    y1);
4749                   else
4750                     gdk_draw_line (event->window,
4751                                    tree_view->priv->tree_line_gc,
4752                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4753                                    y0,
4754                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4755                                    y2);
4756
4757                   tmp_node = tree->parent_node;
4758                   tmp_tree = tree->parent_tree;
4759
4760                   for (i = depth - 2; i > 0; i--)
4761                     {
4762                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4763                         gdk_draw_line (event->window,
4764                                        tree_view->priv->tree_line_gc,
4765                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4766                                        y0,
4767                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4768                                        y2);
4769
4770                       tmp_node = tmp_tree->parent_node;
4771                       tmp_tree = tmp_tree->parent_tree;
4772                     }
4773                 }
4774             }
4775
4776           if (node == cursor && has_special_cell &&
4777               ((column == tree_view->priv->focus_column &&
4778                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4779                 GTK_WIDGET_HAS_FOCUS (widget)) ||
4780                (column == tree_view->priv->edited_column)))
4781             {
4782               _gtk_tree_view_column_cell_draw_focus (column,
4783                                                      event->window,
4784                                                      &background_area,
4785                                                      &cell_area,
4786                                                      &event->area,
4787                                                      flags);
4788             }
4789
4790           cell_offset += column->width;
4791         }
4792
4793       if (node == drag_highlight)
4794         {
4795           /* Draw indicator for the drop
4796            */
4797           gint highlight_y = -1;
4798           GtkRBTree *tree = NULL;
4799           GtkRBNode *node = NULL;
4800           gint width;
4801
4802           switch (tree_view->priv->drag_dest_pos)
4803             {
4804             case GTK_TREE_VIEW_DROP_BEFORE:
4805               highlight_y = background_area.y - 1;
4806               if (highlight_y < 0)
4807                       highlight_y = 0;
4808               break;
4809
4810             case GTK_TREE_VIEW_DROP_AFTER:
4811               highlight_y = background_area.y + background_area.height - 1;
4812               break;
4813
4814             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4815             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4816               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4817
4818               if (tree == NULL)
4819                 break;
4820               gdk_drawable_get_size (tree_view->priv->bin_window,
4821                                      &width, NULL);
4822
4823               if (row_ending_details)
4824                 gtk_paint_focus (widget->style,
4825                                  tree_view->priv->bin_window,
4826                                  GTK_WIDGET_STATE (widget),
4827                                  &event->area,
4828                                  widget,
4829                                  (is_first
4830                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4831                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4832                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4833                                  - focus_line_width / 2,
4834                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4835                                - focus_line_width + 1);
4836               else
4837                 gtk_paint_focus (widget->style,
4838                                  tree_view->priv->bin_window,
4839                                  GTK_WIDGET_STATE (widget),
4840                                  &event->area,
4841                                  widget,
4842                                  "treeview-drop-indicator",
4843                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4844                                  - focus_line_width / 2,
4845                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4846                                  - focus_line_width + 1);
4847               break;
4848             }
4849
4850           if (highlight_y >= 0)
4851             {
4852               gdk_draw_line (event->window,
4853                              widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
4854                              rtl ? highlight_x + expander_cell_width : highlight_x,
4855                              highlight_y,
4856                              rtl ? 0 : bin_window_width,
4857                              highlight_y);
4858             }
4859         }
4860
4861       /* draw the big row-spanning focus rectangle, if needed */
4862       if (!has_special_cell && node == cursor &&
4863           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4864           GTK_WIDGET_HAS_FOCUS (widget))
4865         {
4866           gint tmp_y, tmp_height;
4867           gint width;
4868           GtkStateType focus_rect_state;
4869
4870           focus_rect_state =
4871             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4872             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4873              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4874               GTK_STATE_NORMAL));
4875
4876           gdk_drawable_get_size (tree_view->priv->bin_window,
4877                                  &width, NULL);
4878
4879           if (draw_hgrid_lines)
4880             {
4881               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4882               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4883             }
4884           else
4885             {
4886               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4887               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4888             }
4889
4890           if (row_ending_details)
4891             gtk_paint_focus (widget->style,
4892                              tree_view->priv->bin_window,
4893                              focus_rect_state,
4894                              &event->area,
4895                              widget,
4896                              (is_first
4897                               ? (is_last ? "treeview" : "treeview-left" )
4898                               : (is_last ? "treeview-right" : "treeview-middle" )),
4899                              0, tmp_y,
4900                              width, tmp_height);
4901           else
4902             gtk_paint_focus (widget->style,
4903                              tree_view->priv->bin_window,
4904                              focus_rect_state,
4905                              &event->area,
4906                              widget,
4907                              "treeview",
4908                              0, tmp_y,
4909                              width, tmp_height);
4910         }
4911
4912       y_offset += max_height;
4913       if (node->children)
4914         {
4915           GtkTreeIter parent = iter;
4916           gboolean has_child;
4917
4918           tree = node->children;
4919           node = tree->root;
4920
4921           g_assert (node != tree->nil);
4922
4923           while (node->left != tree->nil)
4924             node = node->left;
4925           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4926                                                     &iter,
4927                                                     &parent);
4928           depth++;
4929
4930           /* Sanity Check! */
4931           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4932         }
4933       else
4934         {
4935           gboolean done = FALSE;
4936
4937           do
4938             {
4939               node = _gtk_rbtree_next (tree, node);
4940               if (node != NULL)
4941                 {
4942                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4943                   done = TRUE;
4944
4945                   /* Sanity Check! */
4946                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4947                 }
4948               else
4949                 {
4950                   GtkTreeIter parent_iter = iter;
4951                   gboolean has_parent;
4952
4953                   node = tree->parent_node;
4954                   tree = tree->parent_tree;
4955                   if (tree == NULL)
4956                     /* we should go to done to free some memory */
4957                     goto done;
4958                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4959                                                            &iter,
4960                                                            &parent_iter);
4961                   depth--;
4962
4963                   /* Sanity check */
4964                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4965                 }
4966             }
4967           while (!done);
4968         }
4969     }
4970   while (y_offset < event->area.height);
4971
4972 done:
4973   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
4974
4975  if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4976    {
4977      GdkRectangle *rectangles;
4978      gint n_rectangles;
4979
4980      gdk_region_get_rectangles (event->region,
4981                                 &rectangles,
4982                                 &n_rectangles);
4983
4984      while (n_rectangles--)
4985        gtk_tree_view_paint_rubber_band (tree_view, &rectangles[n_rectangles]);
4986
4987      g_free (rectangles);
4988    }
4989
4990   if (cursor_path)
4991     gtk_tree_path_free (cursor_path);
4992
4993   if (drag_dest_path)
4994     gtk_tree_path_free (drag_dest_path);
4995
4996   return FALSE;
4997 }
4998
4999 static gboolean
5000 gtk_tree_view_expose (GtkWidget      *widget,
5001                       GdkEventExpose *event)
5002 {
5003   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5004
5005   if (event->window == tree_view->priv->bin_window)
5006     {
5007       gboolean retval;
5008       GList *tmp_list;
5009
5010       retval = gtk_tree_view_bin_expose (widget, event);
5011
5012       /* We can't just chain up to Container::expose as it will try to send the
5013        * event to the headers, so we handle propagating it to our children
5014        * (eg. widgets being edited) ourselves.
5015        */
5016       tmp_list = tree_view->priv->children;
5017       while (tmp_list)
5018         {
5019           GtkTreeViewChild *child = tmp_list->data;
5020           tmp_list = tmp_list->next;
5021
5022           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5023         }
5024
5025       return retval;
5026     }
5027
5028   else if (event->window == tree_view->priv->header_window)
5029     {
5030       GList *list;
5031
5032       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5033         {
5034           GtkTreeViewColumn *column = list->data;
5035
5036           if (column == tree_view->priv->drag_column)
5037             continue;
5038
5039           if (column->visible)
5040             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5041                                             column->button,
5042                                             event);
5043         }
5044     }
5045   else if (event->window == tree_view->priv->drag_window)
5046     {
5047       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5048                                       tree_view->priv->drag_column->button,
5049                                       event);
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_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_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_Left || event->keyval == GDK_KP_Left
5308            || event->keyval == GDK_Right || event->keyval == GDK_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_Right : GDK_Left)
5319               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5320             {
5321               gint old_width = column->resized_width;
5322
5323               column->resized_width = MAX (column->resized_width,
5324                                            column->width);
5325               column->resized_width -= 2;
5326               if (column->resized_width < 0)
5327                 column->resized_width = 0;
5328
5329               if (column->min_width == -1)
5330                 column->resized_width = MAX (column->button->requisition.width,
5331                                              column->resized_width);
5332               else
5333                 column->resized_width = MAX (column->min_width,
5334                                              column->resized_width);
5335
5336               if (column->max_width != -1)
5337                 column->resized_width = MIN (column->resized_width,
5338                                              column->max_width);
5339
5340               column->use_resized_width = TRUE;
5341
5342               if (column->resized_width != old_width)
5343                 gtk_widget_queue_resize (widget);
5344               else
5345                 gtk_widget_error_bell (widget);
5346             }
5347           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5348                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5349             {
5350               gint old_width = column->resized_width;
5351
5352               column->resized_width = MAX (column->resized_width,
5353                                            column->width);
5354               column->resized_width += 2;
5355
5356               if (column->max_width != -1)
5357                 column->resized_width = MIN (column->resized_width,
5358                                              column->max_width);
5359
5360               column->use_resized_width = TRUE;
5361
5362               if (column->resized_width != old_width)
5363                 gtk_widget_queue_resize (widget);
5364               else
5365                 gtk_widget_error_bell (widget);
5366             }
5367
5368           return TRUE;
5369         }
5370
5371       if (focus_column &&
5372           (event->state & GDK_MOD1_MASK) &&
5373           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5374            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5375            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5376            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5377         {
5378           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5379
5380           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5381               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5382             {
5383               GtkTreeViewColumn *col;
5384               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5385               if (col != (GtkTreeViewColumn *)0x1)
5386                 gtk_tree_view_move_column_after (tree_view, column, col);
5387               else
5388                 gtk_widget_error_bell (widget);
5389             }
5390           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5391                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5392             {
5393               GtkTreeViewColumn *col;
5394               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5395               if (col != (GtkTreeViewColumn *)0x1)
5396                 gtk_tree_view_move_column_after (tree_view, column, col);
5397               else
5398                 gtk_widget_error_bell (widget);
5399             }
5400           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5401             {
5402               GtkTreeViewColumn *col;
5403               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5404               if (col != (GtkTreeViewColumn *)0x1)
5405                 gtk_tree_view_move_column_after (tree_view, column, col);
5406               else
5407                 gtk_widget_error_bell (widget);
5408             }
5409           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5410             {
5411               GtkTreeViewColumn *col;
5412               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5413               if (col != (GtkTreeViewColumn *)0x1)
5414                 gtk_tree_view_move_column_after (tree_view, column, col);
5415               else
5416                 gtk_widget_error_bell (widget);
5417             }
5418
5419           return TRUE;
5420         }
5421     }
5422
5423   /* Chain up to the parent class.  It handles the keybindings. */
5424   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5425     return TRUE;
5426
5427   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5428     {
5429       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5430       return FALSE;
5431     }
5432
5433   /* We pass the event to the search_entry.  If its text changes, then we start
5434    * the typeahead find capabilities. */
5435   if (GTK_WIDGET_HAS_FOCUS (tree_view)
5436       && tree_view->priv->enable_search
5437       && !tree_view->priv->search_custom_entry_set)
5438     {
5439       GdkEvent *new_event;
5440       char *old_text;
5441       const char *new_text;
5442       gboolean retval;
5443       GdkScreen *screen;
5444       gboolean text_modified;
5445       gulong popup_menu_id;
5446
5447       gtk_tree_view_ensure_interactive_directory (tree_view);
5448
5449       /* Make a copy of the current text */
5450       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5451       new_event = gdk_event_copy ((GdkEvent *) event);
5452       g_object_unref (((GdkEventKey *) new_event)->window);
5453       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5454       gtk_widget_realize (tree_view->priv->search_window);
5455
5456       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5457                                         "popup-menu", G_CALLBACK (gtk_true),
5458                                         NULL);
5459
5460       /* Move the entry off screen */
5461       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5462       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5463                        gdk_screen_get_width (screen) + 1,
5464                        gdk_screen_get_height (screen) + 1);
5465       gtk_widget_show (tree_view->priv->search_window);
5466
5467       /* Send the event to the window.  If the preedit_changed signal is emitted
5468        * during this event, we will set priv->imcontext_changed  */
5469       tree_view->priv->imcontext_changed = FALSE;
5470       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5471       gdk_event_free (new_event);
5472       gtk_widget_hide (tree_view->priv->search_window);
5473
5474       g_signal_handler_disconnect (tree_view->priv->search_entry,
5475                                    popup_menu_id);
5476
5477       /* We check to make sure that the entry tried to handle the text, and that
5478        * the text has changed.
5479        */
5480       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5481       text_modified = strcmp (old_text, new_text) != 0;
5482       g_free (old_text);
5483       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5484           (retval && text_modified))               /* ...or the text was modified */
5485         {
5486           if (gtk_tree_view_real_start_interactive_search (tree_view, FALSE))
5487             {
5488               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5489               return TRUE;
5490             }
5491           else
5492             {
5493               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5494               return FALSE;
5495             }
5496         }
5497     }
5498
5499   return FALSE;
5500 }
5501
5502 static gboolean
5503 gtk_tree_view_key_release (GtkWidget   *widget,
5504                            GdkEventKey *event)
5505 {
5506   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5507
5508   if (tree_view->priv->rubber_band_status)
5509     return TRUE;
5510
5511   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5512 }
5513
5514 /* FIXME Is this function necessary? Can I get an enter_notify event
5515  * w/o either an expose event or a mouse motion event?
5516  */
5517 static gboolean
5518 gtk_tree_view_enter_notify (GtkWidget        *widget,
5519                             GdkEventCrossing *event)
5520 {
5521   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5522   GtkRBTree *tree;
5523   GtkRBNode *node;
5524   gint new_y;
5525
5526   /* Sanity check it */
5527   if (event->window != tree_view->priv->bin_window)
5528     return FALSE;
5529
5530   if (tree_view->priv->tree == NULL)
5531     return FALSE;
5532
5533   if (event->mode == GDK_CROSSING_GRAB ||
5534       event->mode == GDK_CROSSING_GTK_GRAB ||
5535       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5536       event->mode == GDK_CROSSING_STATE_CHANGED)
5537     return TRUE;
5538
5539   /* find the node internally */
5540   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5541   if (new_y < 0)
5542     new_y = 0;
5543   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5544
5545   if ((tree_view->priv->button_pressed_node == NULL) ||
5546       (tree_view->priv->button_pressed_node == node))
5547     prelight_or_select (tree_view, tree, node, event->x, event->y);
5548
5549   return TRUE;
5550 }
5551
5552 static gboolean
5553 gtk_tree_view_leave_notify (GtkWidget        *widget,
5554                             GdkEventCrossing *event)
5555 {
5556   GtkTreeView *tree_view;
5557
5558   if (event->mode == GDK_CROSSING_GRAB)
5559     return TRUE;
5560
5561   tree_view = GTK_TREE_VIEW (widget);
5562
5563   if (tree_view->priv->prelight_node)
5564     _gtk_tree_view_queue_draw_node (tree_view,
5565                                    tree_view->priv->prelight_tree,
5566                                    tree_view->priv->prelight_node,
5567                                    NULL);
5568
5569   prelight_or_select (tree_view,
5570                       NULL, NULL,
5571                       -1000, -1000); /* coords not possibly over an arrow */
5572
5573   return TRUE;
5574 }
5575
5576
5577 static gint
5578 gtk_tree_view_focus_out (GtkWidget     *widget,
5579                          GdkEventFocus *event)
5580 {
5581   GtkTreeView *tree_view;
5582
5583   tree_view = GTK_TREE_VIEW (widget);
5584
5585   gtk_widget_queue_draw (widget);
5586
5587   /* destroy interactive search dialog */
5588   if (tree_view->priv->search_window)
5589     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
5590
5591   return FALSE;
5592 }
5593
5594
5595 /* Incremental Reflow
5596  */
5597
5598 static void
5599 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5600                                  GtkRBTree   *tree,
5601                                  GtkRBNode   *node)
5602 {
5603   gint y;
5604
5605   y = _gtk_rbtree_node_find_offset (tree, node)
5606     - tree_view->priv->vadjustment->value
5607     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5608
5609   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5610                               0, y,
5611                               GTK_WIDGET (tree_view)->allocation.width,
5612                               GTK_RBNODE_GET_HEIGHT (node));
5613 }
5614
5615 static gboolean
5616 node_is_visible (GtkTreeView *tree_view,
5617                  GtkRBTree   *tree,
5618                  GtkRBNode   *node)
5619 {
5620   int y;
5621   int height;
5622
5623   y = _gtk_rbtree_node_find_offset (tree, node);
5624   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5625
5626   if (y >= tree_view->priv->vadjustment->value &&
5627       y + height <= (tree_view->priv->vadjustment->value
5628                      + tree_view->priv->vadjustment->page_size))
5629     return TRUE;
5630
5631   return FALSE;
5632 }
5633
5634 /* Returns TRUE if it updated the size
5635  */
5636 static gboolean
5637 validate_row (GtkTreeView *tree_view,
5638               GtkRBTree   *tree,
5639               GtkRBNode   *node,
5640               GtkTreeIter *iter,
5641               GtkTreePath *path)
5642 {
5643   GtkTreeViewColumn *column;
5644   GList *list, *first_column, *last_column;
5645   gint height = 0;
5646   gint horizontal_separator;
5647   gint vertical_separator;
5648   gint focus_line_width;
5649   gint depth = gtk_tree_path_get_depth (path);
5650   gboolean retval = FALSE;
5651   gboolean is_separator = FALSE;
5652   gboolean draw_vgrid_lines, draw_hgrid_lines;
5653   gint focus_pad;
5654   gint grid_line_width;
5655   gboolean wide_separators;
5656   gint separator_height;
5657
5658   /* double check the row needs validating */
5659   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5660       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5661     return FALSE;
5662
5663   is_separator = row_is_separator (tree_view, iter, NULL);
5664
5665   gtk_widget_style_get (GTK_WIDGET (tree_view),
5666                         "focus-padding", &focus_pad,
5667                         "focus-line-width", &focus_line_width,
5668                         "horizontal-separator", &horizontal_separator,
5669                         "vertical-separator", &vertical_separator,
5670                         "grid-line-width", &grid_line_width,
5671                         "wide-separators",  &wide_separators,
5672                         "separator-height", &separator_height,
5673                         NULL);
5674
5675   draw_vgrid_lines =
5676     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5677     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5678   draw_hgrid_lines =
5679     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5680     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5681
5682   for (last_column = g_list_last (tree_view->priv->columns);
5683        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5684        last_column = last_column->prev)
5685     ;
5686
5687   for (first_column = g_list_first (tree_view->priv->columns);
5688        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5689        first_column = first_column->next)
5690     ;
5691
5692   for (list = tree_view->priv->columns; list; list = list->next)
5693     {
5694       GtkTreeViewColumnPrivate *column_priv;
5695       GtkRequisition requested_size;
5696       GtkRequisition natural_size;
5697       gint padding;
5698
5699       column = list->data;
5700       column_priv = GTK_TREE_VIEW_COLUMN_GET_PRIVATE (column);
5701
5702       if (! column->visible)
5703         continue;
5704
5705       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5706         continue;
5707
5708       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5709                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5710                                                node->children?TRUE:FALSE);
5711       gtk_tree_view_column_cell_get_size (column,
5712                                           NULL, NULL, NULL,
5713                                           &requested_size.width,
5714                                           &requested_size.height);
5715       gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (column),
5716                                             NULL, &natural_size);
5717
5718       if (!is_separator)
5719         {
5720           requested_size.height += vertical_separator;
5721           height = MAX (height, requested_size.height);
5722           height = MAX (height, tree_view->priv->expander_size);
5723         }
5724       else
5725         {
5726           if (wide_separators)
5727             height = separator_height + 2 * focus_pad;
5728           else
5729             height = 2 + 2 * focus_pad;
5730         }
5731
5732       if (gtk_tree_view_is_expander_column (tree_view, column))
5733         {
5734           padding = horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5735
5736           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5737             padding += depth * tree_view->priv->expander_size;
5738         }
5739       else
5740         padding = horizontal_separator;
5741
5742       if (draw_vgrid_lines)
5743         {
5744           if (list->data == first_column || list->data == last_column)
5745             padding += grid_line_width / 2.0;
5746           else
5747             padding += grid_line_width;
5748         }
5749
5750       requested_size.width += padding;
5751       natural_size.width += padding;
5752
5753       if (requested_size.width > column->requested_width ||
5754           natural_size.width > column_priv->natural_width)
5755         {
5756           retval = TRUE;
5757           column->requested_width = requested_size.width;
5758           column_priv->natural_width = natural_size.width;
5759         }
5760     }
5761
5762   if (draw_hgrid_lines)
5763     height += grid_line_width;
5764
5765   if (height != GTK_RBNODE_GET_HEIGHT (node))
5766     {
5767       retval = TRUE;
5768       _gtk_rbtree_node_set_height (tree, node, height);
5769     }
5770   _gtk_rbtree_node_mark_valid (tree, node);
5771   tree_view->priv->post_validation_flag = TRUE;
5772
5773   return retval;
5774 }
5775
5776
5777 static void
5778 validate_visible_area (GtkTreeView *tree_view)
5779 {
5780   GtkTreePath *path = NULL;
5781   GtkTreePath *above_path = NULL;
5782   GtkTreeIter iter;
5783   GtkRBTree *tree = NULL;
5784   GtkRBNode *node = NULL;
5785   gboolean need_redraw = FALSE;
5786   gboolean size_changed = FALSE;
5787   gint total_height;
5788   gint area_above = 0;
5789   gint area_below = 0;
5790
5791   if (tree_view->priv->tree == NULL)
5792     return;
5793
5794   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5795       tree_view->priv->scroll_to_path == NULL)
5796     return;
5797
5798   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5799
5800   if (total_height == 0)
5801     return;
5802
5803   /* First, we check to see if we need to scroll anywhere
5804    */
5805   if (tree_view->priv->scroll_to_path)
5806     {
5807       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5808       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5809         {
5810           /* we are going to scroll, and will update dy */
5811           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5812           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5813               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5814             {
5815               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5816               if (validate_row (tree_view, tree, node, &iter, path))
5817                 size_changed = TRUE;
5818             }
5819
5820           if (tree_view->priv->scroll_to_use_align)
5821             {
5822               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5823               area_above = (total_height - height) *
5824                 tree_view->priv->scroll_to_row_align;
5825               area_below = total_height - area_above - height;
5826               area_above = MAX (area_above, 0);
5827               area_below = MAX (area_below, 0);
5828             }
5829           else
5830             {
5831               /* two cases:
5832                * 1) row not visible
5833                * 2) row visible
5834                */
5835               gint dy;
5836               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5837
5838               dy = _gtk_rbtree_node_find_offset (tree, node);
5839
5840               if (dy >= tree_view->priv->vadjustment->value &&
5841                   dy + height <= (tree_view->priv->vadjustment->value
5842                                   + tree_view->priv->vadjustment->page_size))
5843                 {
5844                   /* row visible: keep the row at the same position */
5845                   area_above = dy - tree_view->priv->vadjustment->value;
5846                   area_below = (tree_view->priv->vadjustment->value +
5847                                 tree_view->priv->vadjustment->page_size)
5848                                - dy - height;
5849                 }
5850               else
5851                 {
5852                   /* row not visible */
5853                   if (dy >= 0
5854                       && dy + height <= tree_view->priv->vadjustment->page_size)
5855                     {
5856                       /* row at the beginning -- fixed */
5857                       area_above = dy;
5858                       area_below = tree_view->priv->vadjustment->page_size
5859                                    - area_above - height;
5860                     }
5861                   else if (dy >= (tree_view->priv->vadjustment->upper -
5862                                   tree_view->priv->vadjustment->page_size))
5863                     {
5864                       /* row at the end -- fixed */
5865                       area_above = dy - (tree_view->priv->vadjustment->upper -
5866                                    tree_view->priv->vadjustment->page_size);
5867                       area_below = tree_view->priv->vadjustment->page_size -
5868                                    area_above - height;
5869
5870                       if (area_below < 0)
5871                         {
5872                           area_above = tree_view->priv->vadjustment->page_size - height;
5873                           area_below = 0;
5874                         }
5875                     }
5876                   else
5877                     {
5878                       /* row somewhere in the middle, bring it to the top
5879                        * of the view
5880                        */
5881                       area_above = 0;
5882                       area_below = total_height - height;
5883                     }
5884                 }
5885             }
5886         }
5887       else
5888         /* the scroll to isn't valid; ignore it.
5889          */
5890         {
5891           if (tree_view->priv->scroll_to_path && !path)
5892             {
5893               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5894               tree_view->priv->scroll_to_path = NULL;
5895             }
5896           if (path)
5897             gtk_tree_path_free (path);
5898           path = NULL;
5899         }
5900     }
5901
5902   /* We didn't have a scroll_to set, so we just handle things normally
5903    */
5904   if (path == NULL)
5905     {
5906       gint offset;
5907
5908       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5909                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5910                                         &tree, &node);
5911       if (node == NULL)
5912         {
5913           /* In this case, nothing has been validated */
5914           path = gtk_tree_path_new_first ();
5915           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5916         }
5917       else
5918         {
5919           path = _gtk_tree_view_find_path (tree_view, tree, node);
5920           total_height += offset;
5921         }
5922
5923       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5924
5925       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5926           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5927         {
5928           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5929           if (validate_row (tree_view, tree, node, &iter, path))
5930             size_changed = TRUE;
5931         }
5932       area_above = 0;
5933       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5934     }
5935
5936   above_path = gtk_tree_path_copy (path);
5937
5938   /* if we do not validate any row above the new top_row, we will make sure
5939    * that the row immediately above top_row has been validated. (if we do not
5940    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5941    * when invalidated that row's height will be zero. and this will mess up
5942    * scrolling).
5943    */
5944   if (area_above == 0)
5945     {
5946       GtkRBTree *tmptree;
5947       GtkRBNode *tmpnode;
5948
5949       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5950       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5951
5952       if (tmpnode)
5953         {
5954           GtkTreePath *tmppath;
5955           GtkTreeIter tmpiter;
5956
5957           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5958           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5959
5960           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5961               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5962             {
5963               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5964               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5965                 size_changed = TRUE;
5966             }
5967
5968           gtk_tree_path_free (tmppath);
5969         }
5970     }
5971
5972   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5973    * backwards is much slower then forward, as there is no iter_prev function.
5974    * We go forwards first in case we run out of tree.  Then we go backwards to
5975    * fill out the top.
5976    */
5977   while (node && area_below > 0)
5978     {
5979       if (node->children)
5980         {
5981           GtkTreeIter parent = iter;
5982           gboolean has_child;
5983
5984           tree = node->children;
5985           node = tree->root;
5986
5987           g_assert (node != tree->nil);
5988
5989           while (node->left != tree->nil)
5990             node = node->left;
5991           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5992                                                     &iter,
5993                                                     &parent);
5994           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
5995           gtk_tree_path_down (path);
5996         }
5997       else
5998         {
5999           gboolean done = FALSE;
6000           do
6001             {
6002               node = _gtk_rbtree_next (tree, node);
6003               if (node != NULL)
6004                 {
6005                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6006                   done = TRUE;
6007                   gtk_tree_path_next (path);
6008
6009                   /* Sanity Check! */
6010                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6011                 }
6012               else
6013                 {
6014                   GtkTreeIter parent_iter = iter;
6015                   gboolean has_parent;
6016
6017                   node = tree->parent_node;
6018                   tree = tree->parent_tree;
6019                   if (tree == NULL)
6020                     break;
6021                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6022                                                            &iter,
6023                                                            &parent_iter);
6024                   gtk_tree_path_up (path);
6025
6026                   /* Sanity check */
6027                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6028                 }
6029             }
6030           while (!done);
6031         }
6032
6033       if (!node)
6034         break;
6035
6036       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6037           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6038         {
6039           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6040           if (validate_row (tree_view, tree, node, &iter, path))
6041               size_changed = TRUE;
6042         }
6043
6044       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6045     }
6046   gtk_tree_path_free (path);
6047
6048   /* If we ran out of tree, and have extra area_below left, we need to add it
6049    * to area_above */
6050   if (area_below > 0)
6051     area_above += area_below;
6052
6053   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6054
6055   /* We walk backwards */
6056   while (area_above > 0)
6057     {
6058       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6059
6060       /* Always find the new path in the tree.  We cannot just assume
6061        * a gtk_tree_path_prev() is enough here, as there might be children
6062        * in between this node and the previous sibling node.  If this
6063        * appears to be a performance hotspot in profiles, we can look into
6064        * intrigate logic for keeping path, node and iter in sync like
6065        * we do for forward walks.  (Which will be hard because of the lacking
6066        * iter_prev).
6067        */
6068
6069       if (node == NULL)
6070         break;
6071
6072       gtk_tree_path_free (above_path);
6073       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6074
6075       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6076
6077       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6078           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6079         {
6080           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6081           if (validate_row (tree_view, tree, node, &iter, above_path))
6082             size_changed = TRUE;
6083         }
6084       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6085     }
6086
6087   /* if we scrolled to a path, we need to set the dy here,
6088    * and sync the top row accordingly
6089    */
6090   if (tree_view->priv->scroll_to_path)
6091     {
6092       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6093       gtk_tree_view_top_row_to_dy (tree_view);
6094
6095       need_redraw = TRUE;
6096     }
6097   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6098     {
6099       /* when we are not scrolling, we should never set dy to something
6100        * else than zero. we update top_row to be in sync with dy = 0.
6101        */
6102       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6103       gtk_tree_view_dy_to_top_row (tree_view);
6104     }
6105   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6106     {
6107       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6108       gtk_tree_view_dy_to_top_row (tree_view);
6109     }
6110   else
6111     gtk_tree_view_top_row_to_dy (tree_view);
6112
6113   /* update width/height and queue a resize */
6114   if (size_changed)
6115     {
6116       GtkRequisition requisition;
6117
6118       /* We temporarily guess a size, under the assumption that it will be the
6119        * same when we get our next size_allocate.  If we don't do this, we'll be
6120        * in an inconsistent state if we call top_row_to_dy. */
6121
6122       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6123       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6124       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6125       gtk_adjustment_changed (tree_view->priv->hadjustment);
6126       gtk_adjustment_changed (tree_view->priv->vadjustment);
6127       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6128     }
6129
6130   if (tree_view->priv->scroll_to_path)
6131     {
6132       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6133       tree_view->priv->scroll_to_path = NULL;
6134     }
6135
6136   if (above_path)
6137     gtk_tree_path_free (above_path);
6138
6139   if (tree_view->priv->scroll_to_column)
6140     {
6141       tree_view->priv->scroll_to_column = NULL;
6142     }
6143   if (need_redraw)
6144     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6145 }
6146
6147 static void
6148 initialize_fixed_height_mode (GtkTreeView *tree_view)
6149 {
6150   if (!tree_view->priv->tree)
6151     return;
6152
6153   if (tree_view->priv->fixed_height < 0)
6154     {
6155       GtkTreeIter iter;
6156       GtkTreePath *path;
6157
6158       GtkRBTree *tree = NULL;
6159       GtkRBNode *node = NULL;
6160
6161       tree = tree_view->priv->tree;
6162       node = tree->root;
6163
6164       path = _gtk_tree_view_find_path (tree_view, tree, node);
6165       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6166
6167       validate_row (tree_view, tree, node, &iter, path);
6168
6169       gtk_tree_path_free (path);
6170
6171       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6172     }
6173
6174    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6175                                  tree_view->priv->fixed_height, TRUE);
6176 }
6177
6178 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6179  * the left-most uninvalidated node.  We then try walking right, validating
6180  * nodes.  Once we find a valid node, we repeat the previous process of finding
6181  * the first invalid node.
6182  */
6183
6184 static gboolean
6185 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6186 {
6187   GtkRBTree *tree = NULL;
6188   GtkRBNode *node = NULL;
6189   gboolean validated_area = FALSE;
6190   gint retval = TRUE;
6191   GtkTreePath *path = NULL;
6192   GtkTreeIter iter;
6193   GTimer *timer;
6194   gint i = 0;
6195
6196   gint prev_height = -1;
6197   gboolean fixed_height = TRUE;
6198
6199   g_assert (tree_view);
6200
6201   if (tree_view->priv->tree == NULL)
6202       return FALSE;
6203
6204   if (tree_view->priv->fixed_height_mode)
6205     {
6206       if (tree_view->priv->fixed_height < 0)
6207         initialize_fixed_height_mode (tree_view);
6208
6209       return FALSE;
6210     }
6211
6212   timer = g_timer_new ();
6213   g_timer_start (timer);
6214
6215   do
6216     {
6217       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6218         {
6219           retval = FALSE;
6220           goto done;
6221         }
6222
6223       if (path != NULL)
6224         {
6225           node = _gtk_rbtree_next (tree, node);
6226           if (node != NULL)
6227             {
6228               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6229               gtk_tree_path_next (path);
6230             }
6231           else
6232             {
6233               gtk_tree_path_free (path);
6234               path = NULL;
6235             }
6236         }
6237
6238       if (path == NULL)
6239         {
6240           tree = tree_view->priv->tree;
6241           node = tree_view->priv->tree->root;
6242
6243           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6244
6245           do
6246             {
6247               if (node->left != tree->nil &&
6248                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6249                 {
6250                   node = node->left;
6251                 }
6252               else if (node->right != tree->nil &&
6253                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6254                 {
6255                   node = node->right;
6256                 }
6257               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6258                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6259                 {
6260                   break;
6261                 }
6262               else if (node->children != NULL)
6263                 {
6264                   tree = node->children;
6265                   node = tree->root;
6266                 }
6267               else
6268                 /* RBTree corruption!  All bad */
6269                 g_assert_not_reached ();
6270             }
6271           while (TRUE);
6272           path = _gtk_tree_view_find_path (tree_view, tree, node);
6273           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6274         }
6275
6276       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6277                        validated_area;
6278
6279       if (!tree_view->priv->fixed_height_check)
6280         {
6281           gint height;
6282
6283           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6284           if (prev_height < 0)
6285             prev_height = height;
6286           else if (prev_height != height)
6287             fixed_height = FALSE;
6288         }
6289
6290       i++;
6291     }
6292   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6293
6294   if (!tree_view->priv->fixed_height_check)
6295    {
6296      if (fixed_height)
6297        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6298
6299      tree_view->priv->fixed_height_check = 1;
6300    }
6301
6302  done:
6303   if (validated_area)
6304     {
6305       GtkRequisition requisition;
6306       /* We temporarily guess a size, under the assumption that it will be the
6307        * same when we get our next size_allocate.  If we don't do this, we'll be
6308        * in an inconsistent state when we call top_row_to_dy. */
6309
6310       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6311       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6312       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6313       gtk_adjustment_changed (tree_view->priv->hadjustment);
6314       gtk_adjustment_changed (tree_view->priv->vadjustment);
6315
6316       if (queue_resize)
6317         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6318     }
6319
6320   if (path) gtk_tree_path_free (path);
6321   g_timer_destroy (timer);
6322
6323   return retval;
6324 }
6325
6326 static gboolean
6327 validate_rows (GtkTreeView *tree_view)
6328 {
6329   gboolean retval;
6330
6331   retval = do_validate_rows (tree_view, TRUE);
6332
6333   if (! retval && tree_view->priv->validate_rows_timer)
6334     {
6335       g_source_remove (tree_view->priv->validate_rows_timer);
6336       tree_view->priv->validate_rows_timer = 0;
6337     }
6338
6339   return retval;
6340 }
6341
6342 static gboolean
6343 validate_rows_handler (GtkTreeView *tree_view)
6344 {
6345   gboolean retval;
6346
6347   retval = do_validate_rows (tree_view, TRUE);
6348   if (! retval && tree_view->priv->validate_rows_timer)
6349     {
6350       g_source_remove (tree_view->priv->validate_rows_timer);
6351       tree_view->priv->validate_rows_timer = 0;
6352     }
6353
6354   return retval;
6355 }
6356
6357 static gboolean
6358 do_presize_handler (GtkTreeView *tree_view)
6359 {
6360   if (tree_view->priv->mark_rows_col_dirty)
6361     {
6362       if (tree_view->priv->tree)
6363         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6364       tree_view->priv->mark_rows_col_dirty = FALSE;
6365     }
6366   validate_visible_area (tree_view);
6367   tree_view->priv->presize_handler_timer = 0;
6368
6369   if (tree_view->priv->fixed_height_mode)
6370     {
6371       GtkRequisition requisition;
6372
6373       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6374
6375       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6376       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6377       gtk_adjustment_changed (tree_view->priv->hadjustment);
6378       gtk_adjustment_changed (tree_view->priv->vadjustment);
6379       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6380     }
6381
6382   return FALSE;
6383 }
6384
6385 static gboolean
6386 presize_handler_callback (gpointer data)
6387 {
6388   do_presize_handler (GTK_TREE_VIEW (data));
6389
6390   return FALSE;
6391 }
6392
6393 static void
6394 install_presize_handler (GtkTreeView *tree_view)
6395 {
6396   if (! GTK_WIDGET_REALIZED (tree_view))
6397     return;
6398
6399   if (! tree_view->priv->presize_handler_timer)
6400     {
6401       tree_view->priv->presize_handler_timer =
6402         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6403     }
6404   if (! tree_view->priv->validate_rows_timer)
6405     {
6406       tree_view->priv->validate_rows_timer =
6407         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6408     }
6409 }
6410
6411 static gboolean
6412 scroll_sync_handler (GtkTreeView *tree_view)
6413 {
6414   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6415     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6416   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6417     gtk_tree_view_top_row_to_dy (tree_view);
6418   else
6419     gtk_tree_view_dy_to_top_row (tree_view);
6420
6421   tree_view->priv->scroll_sync_timer = 0;
6422
6423   return FALSE;
6424 }
6425
6426 static void
6427 install_scroll_sync_handler (GtkTreeView *tree_view)
6428 {
6429   if (! GTK_WIDGET_REALIZED (tree_view))
6430     return;
6431
6432   if (!tree_view->priv->scroll_sync_timer)
6433     {
6434       tree_view->priv->scroll_sync_timer =
6435         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6436     }
6437 }
6438
6439 static void
6440 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6441                            GtkTreePath *path,
6442                            gint         offset)
6443 {
6444   gtk_tree_row_reference_free (tree_view->priv->top_row);
6445
6446   if (!path)
6447     {
6448       tree_view->priv->top_row = NULL;
6449       tree_view->priv->top_row_dy = 0;
6450     }
6451   else
6452     {
6453       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6454       tree_view->priv->top_row_dy = offset;
6455     }
6456 }
6457
6458 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6459  * it's set to be NULL, and top_row_dy is 0;
6460  */
6461 static void
6462 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6463 {
6464   gint offset;
6465   GtkTreePath *path;
6466   GtkRBTree *tree;
6467   GtkRBNode *node;
6468
6469   if (tree_view->priv->tree == NULL)
6470     {
6471       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6472     }
6473   else
6474     {
6475       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6476                                         tree_view->priv->dy,
6477                                         &tree, &node);
6478
6479       if (tree == NULL)
6480         {
6481           tree_view->priv->top_row = NULL;
6482           tree_view->priv->top_row_dy = 0;
6483         }
6484       else
6485         {
6486           path = _gtk_tree_view_find_path (tree_view, tree, node);
6487           gtk_tree_view_set_top_row (tree_view, path, offset);
6488           gtk_tree_path_free (path);
6489         }
6490     }
6491 }
6492
6493 static void
6494 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6495 {
6496   GtkTreePath *path;
6497   GtkRBTree *tree;
6498   GtkRBNode *node;
6499   int new_dy;
6500
6501   /* Avoid recursive calls */
6502   if (tree_view->priv->in_top_row_to_dy)
6503     return;
6504
6505   if (tree_view->priv->top_row)
6506     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6507   else
6508     path = NULL;
6509
6510   if (!path)
6511     tree = NULL;
6512   else
6513     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6514
6515   if (path)
6516     gtk_tree_path_free (path);
6517
6518   if (tree == NULL)
6519     {
6520       /* keep dy and set new toprow */
6521       gtk_tree_row_reference_free (tree_view->priv->top_row);
6522       tree_view->priv->top_row = NULL;
6523       tree_view->priv->top_row_dy = 0;
6524       /* DO NOT install the idle handler */
6525       gtk_tree_view_dy_to_top_row (tree_view);
6526       return;
6527     }
6528
6529   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6530       < tree_view->priv->top_row_dy)
6531     {
6532       /* new top row -- do NOT install the idle handler */
6533       gtk_tree_view_dy_to_top_row (tree_view);
6534       return;
6535     }
6536
6537   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6538   new_dy += tree_view->priv->top_row_dy;
6539
6540   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6541     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6542
6543   new_dy = MAX (0, new_dy);
6544
6545   tree_view->priv->in_top_row_to_dy = TRUE;
6546   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6547   tree_view->priv->in_top_row_to_dy = FALSE;
6548 }
6549
6550
6551 void
6552 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6553 {
6554   tree_view->priv->mark_rows_col_dirty = TRUE;
6555
6556   install_presize_handler (tree_view);
6557 }
6558
6559 /*
6560  * This function works synchronously (due to the while (validate_rows...)
6561  * loop).
6562  *
6563  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6564  * here. You now need to check that yourself.
6565  */
6566 void
6567 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6568                                 GtkTreeViewColumn *column)
6569 {
6570   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6571   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6572
6573   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6574
6575   do_presize_handler (tree_view);
6576   while (validate_rows (tree_view));
6577
6578   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6579 }
6580
6581 /* Drag-and-drop */
6582
6583 static void
6584 set_source_row (GdkDragContext *context,
6585                 GtkTreeModel   *model,
6586                 GtkTreePath    *source_row)
6587 {
6588   g_object_set_data_full (G_OBJECT (context),
6589                           I_("gtk-tree-view-source-row"),
6590                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6591                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6592 }
6593
6594 static GtkTreePath*
6595 get_source_row (GdkDragContext *context)
6596 {
6597   GtkTreeRowReference *ref =
6598     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6599
6600   if (ref)
6601     return gtk_tree_row_reference_get_path (ref);
6602   else
6603     return NULL;
6604 }
6605
6606 typedef struct
6607 {
6608   GtkTreeRowReference *dest_row;
6609   guint                path_down_mode   : 1;
6610   guint                empty_view_drop  : 1;
6611   guint                drop_append_mode : 1;
6612 }
6613 DestRow;
6614
6615 static void
6616 dest_row_free (gpointer data)
6617 {
6618   DestRow *dr = (DestRow *)data;
6619
6620   gtk_tree_row_reference_free (dr->dest_row);
6621   g_slice_free (DestRow, dr);
6622 }
6623
6624 static void
6625 set_dest_row (GdkDragContext *context,
6626               GtkTreeModel   *model,
6627               GtkTreePath    *dest_row,
6628               gboolean        path_down_mode,
6629               gboolean        empty_view_drop,
6630               gboolean        drop_append_mode)
6631 {
6632   DestRow *dr;
6633
6634   if (!dest_row)
6635     {
6636       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6637                               NULL, NULL);
6638       return;
6639     }
6640
6641   dr = g_slice_new (DestRow);
6642
6643   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6644   dr->path_down_mode = path_down_mode != FALSE;
6645   dr->empty_view_drop = empty_view_drop != FALSE;
6646   dr->drop_append_mode = drop_append_mode != FALSE;
6647
6648   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6649                           dr, (GDestroyNotify) dest_row_free);
6650 }
6651
6652 static GtkTreePath*
6653 get_dest_row (GdkDragContext *context,
6654               gboolean       *path_down_mode)
6655 {
6656   DestRow *dr =
6657     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6658
6659   if (dr)
6660     {
6661       GtkTreePath *path = NULL;
6662
6663       if (path_down_mode)
6664         *path_down_mode = dr->path_down_mode;
6665
6666       if (dr->dest_row)
6667         path = gtk_tree_row_reference_get_path (dr->dest_row);
6668       else if (dr->empty_view_drop)
6669         path = gtk_tree_path_new_from_indices (0, -1);
6670       else
6671         path = NULL;
6672
6673       if (path && dr->drop_append_mode)
6674         gtk_tree_path_next (path);
6675
6676       return path;
6677     }
6678   else
6679     return NULL;
6680 }
6681
6682 /* Get/set whether drag_motion requested the drag data and
6683  * drag_data_received should thus not actually insert the data,
6684  * since the data doesn't result from a drop.
6685  */
6686 static void
6687 set_status_pending (GdkDragContext *context,
6688                     GdkDragAction   suggested_action)
6689 {
6690   g_object_set_data (G_OBJECT (context),
6691                      I_("gtk-tree-view-status-pending"),
6692                      GINT_TO_POINTER (suggested_action));
6693 }
6694
6695 static GdkDragAction
6696 get_status_pending (GdkDragContext *context)
6697 {
6698   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6699                                              "gtk-tree-view-status-pending"));
6700 }
6701
6702 static TreeViewDragInfo*
6703 get_info (GtkTreeView *tree_view)
6704 {
6705   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6706 }
6707
6708 static void
6709 destroy_info (TreeViewDragInfo *di)
6710 {
6711   g_slice_free (TreeViewDragInfo, di);
6712 }
6713
6714 static TreeViewDragInfo*
6715 ensure_info (GtkTreeView *tree_view)
6716 {
6717   TreeViewDragInfo *di;
6718
6719   di = get_info (tree_view);
6720
6721   if (di == NULL)
6722     {
6723       di = g_slice_new0 (TreeViewDragInfo);
6724
6725       g_object_set_data_full (G_OBJECT (tree_view),
6726                               I_("gtk-tree-view-drag-info"),
6727                               di,
6728                               (GDestroyNotify) destroy_info);
6729     }
6730
6731   return di;
6732 }
6733
6734 static void
6735 remove_info (GtkTreeView *tree_view)
6736 {
6737   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6738 }
6739
6740 #if 0
6741 static gint
6742 drag_scan_timeout (gpointer data)
6743 {
6744   GtkTreeView *tree_view;
6745   gint x, y;
6746   GdkModifierType state;
6747   GtkTreePath *path = NULL;
6748   GtkTreeViewColumn *column = NULL;
6749   GdkRectangle visible_rect;
6750
6751   GDK_THREADS_ENTER ();
6752
6753   tree_view = GTK_TREE_VIEW (data);
6754
6755   gdk_window_get_pointer (tree_view->priv->bin_window,
6756                           &x, &y, &state);
6757
6758   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6759
6760   /* See if we are near the edge. */
6761   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6762       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6763       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6764       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6765     {
6766       gtk_tree_view_get_path_at_pos (tree_view,
6767                                      tree_view->priv->bin_window,
6768                                      x, y,
6769                                      &path,
6770                                      &column,
6771                                      NULL,
6772                                      NULL);
6773
6774       if (path != NULL)
6775         {
6776           gtk_tree_view_scroll_to_cell (tree_view,
6777                                         path,
6778                                         column,
6779                                         TRUE,
6780                                         0.5, 0.5);
6781
6782           gtk_tree_path_free (path);
6783         }
6784     }
6785
6786   GDK_THREADS_LEAVE ();
6787
6788   return TRUE;
6789 }
6790 #endif /* 0 */
6791
6792 static void
6793 add_scroll_timeout (GtkTreeView *tree_view)
6794 {
6795   if (tree_view->priv->scroll_timeout == 0)
6796     {
6797       tree_view->priv->scroll_timeout =
6798         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6799     }
6800 }
6801
6802 static void
6803 remove_scroll_timeout (GtkTreeView *tree_view)
6804 {
6805   if (tree_view->priv->scroll_timeout != 0)
6806     {
6807       g_source_remove (tree_view->priv->scroll_timeout);
6808       tree_view->priv->scroll_timeout = 0;
6809     }
6810 }
6811
6812 static gboolean
6813 check_model_dnd (GtkTreeModel *model,
6814                  GType         required_iface,
6815                  const gchar  *signal)
6816 {
6817   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6818     {
6819       g_warning ("You must override the default '%s' handler "
6820                  "on GtkTreeView when using models that don't support "
6821                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6822                  "is to connect to '%s' and call "
6823                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6824                  "the default handler from running. Look at the source code "
6825                  "for the default handler in gtktreeview.c to get an idea what "
6826                  "your handler should do. (gtktreeview.c is in the GTK source "
6827                  "code.) If you're using GTK from a language other than C, "
6828                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6829                  signal, g_type_name (required_iface), signal);
6830       return FALSE;
6831     }
6832   else
6833     return TRUE;
6834 }
6835
6836 static void
6837 remove_open_timeout (GtkTreeView *tree_view)
6838 {
6839   if (tree_view->priv->open_dest_timeout != 0)
6840     {
6841       g_source_remove (tree_view->priv->open_dest_timeout);
6842       tree_view->priv->open_dest_timeout = 0;
6843     }
6844 }
6845
6846
6847 static gint
6848 open_row_timeout (gpointer data)
6849 {
6850   GtkTreeView *tree_view = data;
6851   GtkTreePath *dest_path = NULL;
6852   GtkTreeViewDropPosition pos;
6853   gboolean result = FALSE;
6854
6855   gtk_tree_view_get_drag_dest_row (tree_view,
6856                                    &dest_path,
6857                                    &pos);
6858
6859   if (dest_path &&
6860       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6861        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6862     {
6863       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6864       tree_view->priv->open_dest_timeout = 0;
6865
6866       gtk_tree_path_free (dest_path);
6867     }
6868   else
6869     {
6870       if (dest_path)
6871         gtk_tree_path_free (dest_path);
6872
6873       result = TRUE;
6874     }
6875
6876   return result;
6877 }
6878
6879 static gboolean
6880 scroll_row_timeout (gpointer data)
6881 {
6882   GtkTreeView *tree_view = data;
6883
6884   gtk_tree_view_vertical_autoscroll (tree_view);
6885
6886   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6887     gtk_tree_view_update_rubber_band (tree_view);
6888
6889   return TRUE;
6890 }
6891
6892 /* Returns TRUE if event should not be propagated to parent widgets */
6893 static gboolean
6894 set_destination_row (GtkTreeView    *tree_view,
6895                      GdkDragContext *context,
6896                      /* coordinates relative to the widget */
6897                      gint            x,
6898                      gint            y,
6899                      GdkDragAction  *suggested_action,
6900                      GdkAtom        *target)
6901 {
6902   GtkTreePath *path = NULL;
6903   GtkTreeViewDropPosition pos;
6904   GtkTreeViewDropPosition old_pos;
6905   TreeViewDragInfo *di;
6906   GtkWidget *widget;
6907   GtkTreePath *old_dest_path = NULL;
6908   gboolean can_drop = FALSE;
6909
6910   *suggested_action = 0;
6911   *target = GDK_NONE;
6912
6913   widget = GTK_WIDGET (tree_view);
6914
6915   di = get_info (tree_view);
6916
6917   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6918     {
6919       /* someone unset us as a drag dest, note that if
6920        * we return FALSE drag_leave isn't called
6921        */
6922
6923       gtk_tree_view_set_drag_dest_row (tree_view,
6924                                        NULL,
6925                                        GTK_TREE_VIEW_DROP_BEFORE);
6926
6927       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6928       remove_open_timeout (GTK_TREE_VIEW (widget));
6929
6930       return FALSE; /* no longer a drop site */
6931     }
6932
6933   *target = gtk_drag_dest_find_target (widget, context,
6934                                        gtk_drag_dest_get_target_list (widget));
6935   if (*target == GDK_NONE)
6936     {
6937       return FALSE;
6938     }
6939
6940   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6941                                           x, y,
6942                                           &path,
6943                                           &pos))
6944     {
6945       gint n_children;
6946       GtkTreeModel *model;
6947
6948       remove_open_timeout (tree_view);
6949
6950       /* the row got dropped on empty space, let's setup a special case
6951        */
6952
6953       if (path)
6954         gtk_tree_path_free (path);
6955
6956       model = gtk_tree_view_get_model (tree_view);
6957
6958       n_children = gtk_tree_model_iter_n_children (model, NULL);
6959       if (n_children)
6960         {
6961           pos = GTK_TREE_VIEW_DROP_AFTER;
6962           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6963         }
6964       else
6965         {
6966           pos = GTK_TREE_VIEW_DROP_BEFORE;
6967           path = gtk_tree_path_new_from_indices (0, -1);
6968         }
6969
6970       can_drop = TRUE;
6971
6972       goto out;
6973     }
6974
6975   g_assert (path);
6976
6977   /* If we left the current row's "open" zone, unset the timeout for
6978    * opening the row
6979    */
6980   gtk_tree_view_get_drag_dest_row (tree_view,
6981                                    &old_dest_path,
6982                                    &old_pos);
6983
6984   if (old_dest_path &&
6985       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
6986        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6987          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
6988     remove_open_timeout (tree_view);
6989
6990   if (old_dest_path)
6991     gtk_tree_path_free (old_dest_path);
6992
6993   if (TRUE /* FIXME if the location droppable predicate */)
6994     {
6995       can_drop = TRUE;
6996     }
6997
6998 out:
6999   if (can_drop)
7000     {
7001       GtkWidget *source_widget;
7002
7003       *suggested_action = context->suggested_action;
7004       source_widget = gtk_drag_get_source_widget (context);
7005
7006       if (source_widget == widget)
7007         {
7008           /* Default to MOVE, unless the user has
7009            * pressed ctrl or shift to affect available actions
7010            */
7011           if ((context->actions & GDK_ACTION_MOVE) != 0)
7012             *suggested_action = GDK_ACTION_MOVE;
7013         }
7014
7015       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7016                                        path, pos);
7017     }
7018   else
7019     {
7020       /* can't drop here */
7021       remove_open_timeout (tree_view);
7022
7023       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7024                                        NULL,
7025                                        GTK_TREE_VIEW_DROP_BEFORE);
7026     }
7027
7028   if (path)
7029     gtk_tree_path_free (path);
7030
7031   return TRUE;
7032 }
7033
7034 static GtkTreePath*
7035 get_logical_dest_row (GtkTreeView *tree_view,
7036                       gboolean    *path_down_mode,
7037                       gboolean    *drop_append_mode)
7038 {
7039   /* adjust path to point to the row the drop goes in front of */
7040   GtkTreePath *path = NULL;
7041   GtkTreeViewDropPosition pos;
7042
7043   g_return_val_if_fail (path_down_mode != NULL, NULL);
7044   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7045
7046   *path_down_mode = FALSE;
7047   *drop_append_mode = 0;
7048
7049   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7050
7051   if (path == NULL)
7052     return NULL;
7053
7054   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7055     ; /* do nothing */
7056   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7057            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7058     *path_down_mode = TRUE;
7059   else
7060     {
7061       GtkTreeIter iter;
7062       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7063
7064       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7065
7066       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7067           !gtk_tree_model_iter_next (model, &iter))
7068         *drop_append_mode = 1;
7069       else
7070         {
7071           *drop_append_mode = 0;
7072           gtk_tree_path_next (path);
7073         }
7074     }
7075
7076   return path;
7077 }
7078
7079 static gboolean
7080 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7081                                         GdkEventMotion   *event)
7082 {
7083   GtkWidget *widget = GTK_WIDGET (tree_view);
7084   GdkDragContext *context;
7085   TreeViewDragInfo *di;
7086   GtkTreePath *path = NULL;
7087   gint button;
7088   gint cell_x, cell_y;
7089   GtkTreeModel *model;
7090   gboolean retval = FALSE;
7091
7092   di = get_info (tree_view);
7093
7094   if (di == NULL || !di->source_set)
7095     goto out;
7096
7097   if (tree_view->priv->pressed_button < 0)
7098     goto out;
7099
7100   if (!gtk_drag_check_threshold (widget,
7101                                  tree_view->priv->press_start_x,
7102                                  tree_view->priv->press_start_y,
7103                                  event->x, event->y))
7104     goto out;
7105
7106   model = gtk_tree_view_get_model (tree_view);
7107
7108   if (model == NULL)
7109     goto out;
7110
7111   button = tree_view->priv->pressed_button;
7112   tree_view->priv->pressed_button = -1;
7113
7114   gtk_tree_view_get_path_at_pos (tree_view,
7115                                  tree_view->priv->press_start_x,
7116                                  tree_view->priv->press_start_y,
7117                                  &path,
7118                                  NULL,
7119                                  &cell_x,
7120                                  &cell_y);
7121
7122   if (path == NULL)
7123     goto out;
7124
7125   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7126       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7127                                            path))
7128     goto out;
7129
7130   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7131     goto out;
7132
7133   /* Now we can begin the drag */
7134
7135   retval = TRUE;
7136
7137   context = gtk_drag_begin (widget,
7138                             gtk_drag_source_get_target_list (widget),
7139                             di->source_actions,
7140                             button,
7141                             (GdkEvent*)event);
7142
7143   set_source_row (context, model, path);
7144
7145  out:
7146   if (path)
7147     gtk_tree_path_free (path);
7148
7149   return retval;
7150 }
7151
7152
7153 static void
7154 gtk_tree_view_drag_begin (GtkWidget      *widget,
7155                           GdkDragContext *context)
7156 {
7157   GtkTreeView *tree_view;
7158   GtkTreePath *path = NULL;
7159   gint cell_x, cell_y;
7160   GdkPixmap *row_pix;
7161   TreeViewDragInfo *di;
7162
7163   tree_view = GTK_TREE_VIEW (widget);
7164
7165   /* if the user uses a custom DND source impl, we don't set the icon here */
7166   di = get_info (tree_view);
7167
7168   if (di == NULL || !di->source_set)
7169     return;
7170
7171   gtk_tree_view_get_path_at_pos (tree_view,
7172                                  tree_view->priv->press_start_x,
7173                                  tree_view->priv->press_start_y,
7174                                  &path,
7175                                  NULL,
7176                                  &cell_x,
7177                                  &cell_y);
7178
7179   g_return_if_fail (path != NULL);
7180
7181   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7182                                                 path);
7183
7184   gtk_drag_set_icon_pixmap (context,
7185                             gdk_drawable_get_colormap (row_pix),
7186                             row_pix,
7187                             NULL,
7188                             /* the + 1 is for the black border in the icon */
7189                             tree_view->priv->press_start_x + 1,
7190                             cell_y + 1);
7191
7192   g_object_unref (row_pix);
7193   gtk_tree_path_free (path);
7194 }
7195
7196 static void
7197 gtk_tree_view_drag_end (GtkWidget      *widget,
7198                         GdkDragContext *context)
7199 {
7200   /* do nothing */
7201 }
7202
7203 /* Default signal implementations for the drag signals */
7204 static void
7205 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7206                              GdkDragContext   *context,
7207                              GtkSelectionData *selection_data,
7208                              guint             info,
7209                              guint             time)
7210 {
7211   GtkTreeView *tree_view;
7212   GtkTreeModel *model;
7213   TreeViewDragInfo *di;
7214   GtkTreePath *source_row;
7215
7216   tree_view = GTK_TREE_VIEW (widget);
7217
7218   model = gtk_tree_view_get_model (tree_view);
7219
7220   if (model == NULL)
7221     return;
7222
7223   di = get_info (GTK_TREE_VIEW (widget));
7224
7225   if (di == NULL)
7226     return;
7227
7228   source_row = get_source_row (context);
7229
7230   if (source_row == NULL)
7231     return;
7232
7233   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7234    * any model; for DragSource models there are some other targets
7235    * we also support.
7236    */
7237
7238   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7239       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7240                                           source_row,
7241                                           selection_data))
7242     goto done;
7243
7244   /* If drag_data_get does nothing, try providing row data. */
7245   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7246     {
7247       gtk_tree_set_row_drag_data (selection_data,
7248                                   model,
7249                                   source_row);
7250     }
7251
7252  done:
7253   gtk_tree_path_free (source_row);
7254 }
7255
7256
7257 static void
7258 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7259                                 GdkDragContext *context)
7260 {
7261   TreeViewDragInfo *di;
7262   GtkTreeModel *model;
7263   GtkTreeView *tree_view;
7264   GtkTreePath *source_row;
7265
7266   tree_view = GTK_TREE_VIEW (widget);
7267   model = gtk_tree_view_get_model (tree_view);
7268
7269   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7270     return;
7271
7272   di = get_info (tree_view);
7273
7274   if (di == NULL)
7275     return;
7276
7277   source_row = get_source_row (context);
7278
7279   if (source_row == NULL)
7280     return;
7281
7282   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7283                                          source_row);
7284
7285   gtk_tree_path_free (source_row);
7286
7287   set_source_row (context, NULL, NULL);
7288 }
7289
7290 static void
7291 gtk_tree_view_drag_leave (GtkWidget      *widget,
7292                           GdkDragContext *context,
7293                           guint             time)
7294 {
7295   /* unset any highlight row */
7296   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7297                                    NULL,
7298                                    GTK_TREE_VIEW_DROP_BEFORE);
7299
7300   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7301   remove_open_timeout (GTK_TREE_VIEW (widget));
7302 }
7303
7304
7305 static gboolean
7306 gtk_tree_view_drag_motion (GtkWidget        *widget,
7307                            GdkDragContext   *context,
7308                            /* coordinates relative to the widget */
7309                            gint              x,
7310                            gint              y,
7311                            guint             time)
7312 {
7313   gboolean empty;
7314   GtkTreePath *path = NULL;
7315   GtkTreeViewDropPosition pos;
7316   GtkTreeView *tree_view;
7317   GdkDragAction suggested_action = 0;
7318   GdkAtom target;
7319
7320   tree_view = GTK_TREE_VIEW (widget);
7321
7322   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7323     return FALSE;
7324
7325   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7326
7327   /* we only know this *after* set_desination_row */
7328   empty = tree_view->priv->empty_view_drop;
7329
7330   if (path == NULL && !empty)
7331     {
7332       /* Can't drop here. */
7333       gdk_drag_status (context, 0, time);
7334     }
7335   else
7336     {
7337       if (tree_view->priv->open_dest_timeout == 0 &&
7338           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7339            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7340         {
7341           tree_view->priv->open_dest_timeout =
7342             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7343         }
7344       else
7345         {
7346           add_scroll_timeout (tree_view);
7347         }
7348
7349       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7350         {
7351           /* Request data so we can use the source row when
7352            * determining whether to accept the drop
7353            */
7354           set_status_pending (context, suggested_action);
7355           gtk_drag_get_data (widget, context, target, time);
7356         }
7357       else
7358         {
7359           set_status_pending (context, 0);
7360           gdk_drag_status (context, suggested_action, time);
7361         }
7362     }
7363
7364   if (path)
7365     gtk_tree_path_free (path);
7366
7367   return TRUE;
7368 }
7369
7370
7371 static gboolean
7372 gtk_tree_view_drag_drop (GtkWidget        *widget,
7373                          GdkDragContext   *context,
7374                          /* coordinates relative to the widget */
7375                          gint              x,
7376                          gint              y,
7377                          guint             time)
7378 {
7379   GtkTreeView *tree_view;
7380   GtkTreePath *path;
7381   GdkDragAction suggested_action = 0;
7382   GdkAtom target = GDK_NONE;
7383   TreeViewDragInfo *di;
7384   GtkTreeModel *model;
7385   gboolean path_down_mode;
7386   gboolean drop_append_mode;
7387
7388   tree_view = GTK_TREE_VIEW (widget);
7389
7390   model = gtk_tree_view_get_model (tree_view);
7391
7392   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7393   remove_open_timeout (GTK_TREE_VIEW (widget));
7394
7395   di = get_info (tree_view);
7396
7397   if (di == NULL)
7398     return FALSE;
7399
7400   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7401     return FALSE;
7402
7403   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7404     return FALSE;
7405
7406   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7407
7408   if (target != GDK_NONE && path != NULL)
7409     {
7410       /* in case a motion had requested drag data, change things so we
7411        * treat drag data receives as a drop.
7412        */
7413       set_status_pending (context, 0);
7414       set_dest_row (context, model, path,
7415                     path_down_mode, tree_view->priv->empty_view_drop,
7416                     drop_append_mode);
7417     }
7418
7419   if (path)
7420     gtk_tree_path_free (path);
7421
7422   /* Unset this thing */
7423   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7424                                    NULL,
7425                                    GTK_TREE_VIEW_DROP_BEFORE);
7426
7427   if (target != GDK_NONE)
7428     {
7429       gtk_drag_get_data (widget, context, target, time);
7430       return TRUE;
7431     }
7432   else
7433     return FALSE;
7434 }
7435
7436 static void
7437 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7438                                   GdkDragContext   *context,
7439                                   /* coordinates relative to the widget */
7440                                   gint              x,
7441                                   gint              y,
7442                                   GtkSelectionData *selection_data,
7443                                   guint             info,
7444                                   guint             time)
7445 {
7446   GtkTreePath *path;
7447   TreeViewDragInfo *di;
7448   gboolean accepted = FALSE;
7449   GtkTreeModel *model;
7450   GtkTreeView *tree_view;
7451   GtkTreePath *dest_row;
7452   GdkDragAction suggested_action;
7453   gboolean path_down_mode;
7454   gboolean drop_append_mode;
7455
7456   tree_view = GTK_TREE_VIEW (widget);
7457
7458   model = gtk_tree_view_get_model (tree_view);
7459
7460   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7461     return;
7462
7463   di = get_info (tree_view);
7464
7465   if (di == NULL)
7466     return;
7467
7468   suggested_action = get_status_pending (context);
7469
7470   if (suggested_action)
7471     {
7472       /* We are getting this data due to a request in drag_motion,
7473        * rather than due to a request in drag_drop, so we are just
7474        * supposed to call drag_status, not actually paste in the
7475        * data.
7476        */
7477       path = get_logical_dest_row (tree_view, &path_down_mode,
7478                                    &drop_append_mode);
7479
7480       if (path == NULL)
7481         suggested_action = 0;
7482       else if (path_down_mode)
7483         gtk_tree_path_down (path);
7484
7485       if (suggested_action)
7486         {
7487           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7488                                                      path,
7489                                                      selection_data))
7490             {
7491               if (path_down_mode)
7492                 {
7493                   path_down_mode = FALSE;
7494                   gtk_tree_path_up (path);
7495
7496                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7497                                                              path,
7498                                                              selection_data))
7499                     suggested_action = 0;
7500                 }
7501               else
7502                 suggested_action = 0;
7503             }
7504         }
7505
7506       gdk_drag_status (context, suggested_action, time);
7507
7508       if (path)
7509         gtk_tree_path_free (path);
7510
7511       /* If you can't drop, remove user drop indicator until the next motion */
7512       if (suggested_action == 0)
7513         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7514                                          NULL,
7515                                          GTK_TREE_VIEW_DROP_BEFORE);
7516
7517       return;
7518     }
7519
7520   dest_row = get_dest_row (context, &path_down_mode);
7521
7522   if (dest_row == NULL)
7523     return;
7524
7525   if (selection_data->length >= 0)
7526     {
7527       if (path_down_mode)
7528         {
7529           gtk_tree_path_down (dest_row);
7530           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7531                                                      dest_row, selection_data))
7532             gtk_tree_path_up (dest_row);
7533         }
7534     }
7535
7536   if (selection_data->length >= 0)
7537     {
7538       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7539                                                  dest_row,
7540                                                  selection_data))
7541         accepted = TRUE;
7542     }
7543
7544   gtk_drag_finish (context,
7545                    accepted,
7546                    (context->action == GDK_ACTION_MOVE),
7547                    time);
7548
7549   if (gtk_tree_path_get_depth (dest_row) == 1
7550       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7551     {
7552       /* special special case drag to "0", scroll to first item */
7553       if (!tree_view->priv->scroll_to_path)
7554         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7555     }
7556
7557   gtk_tree_path_free (dest_row);
7558
7559   /* drop dest_row */
7560   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7561 }
7562
7563
7564
7565 /* GtkContainer Methods
7566  */
7567
7568
7569 static void
7570 gtk_tree_view_remove (GtkContainer *container,
7571                       GtkWidget    *widget)
7572 {
7573   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7574   GtkTreeViewChild *child = NULL;
7575   GList *tmp_list;
7576
7577   tmp_list = tree_view->priv->children;
7578   while (tmp_list)
7579     {
7580       child = tmp_list->data;
7581       if (child->widget == widget)
7582         {
7583           gtk_widget_unparent (widget);
7584
7585           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7586           g_list_free_1 (tmp_list);
7587           g_slice_free (GtkTreeViewChild, child);
7588           return;
7589         }
7590
7591       tmp_list = tmp_list->next;
7592     }
7593
7594   tmp_list = tree_view->priv->columns;
7595
7596   while (tmp_list)
7597     {
7598       GtkTreeViewColumn *column;
7599       column = tmp_list->data;
7600       if (column->button == widget)
7601         {
7602           gtk_widget_unparent (widget);
7603           return;
7604         }
7605       tmp_list = tmp_list->next;
7606     }
7607 }
7608
7609 static void
7610 gtk_tree_view_forall (GtkContainer *container,
7611                       gboolean      include_internals,
7612                       GtkCallback   callback,
7613                       gpointer      callback_data)
7614 {
7615   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7616   GtkTreeViewChild *child = NULL;
7617   GtkTreeViewColumn *column;
7618   GList *tmp_list;
7619
7620   tmp_list = tree_view->priv->children;
7621   while (tmp_list)
7622     {
7623       child = tmp_list->data;
7624       tmp_list = tmp_list->next;
7625
7626       (* callback) (child->widget, callback_data);
7627     }
7628   if (include_internals == FALSE)
7629     return;
7630
7631   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7632     {
7633       column = tmp_list->data;
7634
7635       if (column->button)
7636         (* callback) (column->button, callback_data);
7637     }
7638 }
7639
7640 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7641  * cells. If so we draw one big row-spanning focus rectangle.
7642  */
7643 static gboolean
7644 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7645 {
7646   GList *list;
7647
7648   for (list = tree_view->priv->columns; list; list = list->next)
7649     {
7650       if (!((GtkTreeViewColumn *)list->data)->visible)
7651         continue;
7652       if (_gtk_tree_view_column_count_special_cells (list->data))
7653         return TRUE;
7654     }
7655
7656   return FALSE;
7657 }
7658
7659 static void
7660 column_sizing_notify (GObject    *object,
7661                       GParamSpec *pspec,
7662                       gpointer    data)
7663 {
7664   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7665
7666   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7667     /* disable fixed height mode */
7668     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7669 }
7670
7671 /**
7672  * gtk_tree_view_set_fixed_height_mode:
7673  * @tree_view: a #GtkTreeView
7674  * @enable: %TRUE to enable fixed height mode
7675  *
7676  * Enables or disables the fixed height mode of @tree_view.
7677  * Fixed height mode speeds up #GtkTreeView by assuming that all
7678  * rows have the same height.
7679  * Only enable this option if all rows are the same height and all
7680  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7681  *
7682  * Since: 2.6
7683  **/
7684 void
7685 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7686                                      gboolean     enable)
7687 {
7688   GList *l;
7689
7690   enable = enable != FALSE;
7691
7692   if (enable == tree_view->priv->fixed_height_mode)
7693     return;
7694
7695   if (!enable)
7696     {
7697       tree_view->priv->fixed_height_mode = 0;
7698       tree_view->priv->fixed_height = -1;
7699
7700       /* force a revalidation */
7701       install_presize_handler (tree_view);
7702     }
7703   else
7704     {
7705       /* make sure all columns are of type FIXED */
7706       for (l = tree_view->priv->columns; l; l = l->next)
7707         {
7708           GtkTreeViewColumn *c = l->data;
7709
7710           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7711         }
7712
7713       /* yes, we really have to do this is in a separate loop */
7714       for (l = tree_view->priv->columns; l; l = l->next)
7715         g_signal_connect (l->data, "notify::sizing",
7716                           G_CALLBACK (column_sizing_notify), tree_view);
7717
7718       tree_view->priv->fixed_height_mode = 1;
7719       tree_view->priv->fixed_height = -1;
7720
7721       if (tree_view->priv->tree)
7722         initialize_fixed_height_mode (tree_view);
7723     }
7724
7725   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7726 }
7727
7728 /**
7729  * gtk_tree_view_get_fixed_height_mode:
7730  * @tree_view: a #GtkTreeView
7731  *
7732  * Returns whether fixed height mode is turned on for @tree_view.
7733  *
7734  * Return value: %TRUE if @tree_view is in fixed height mode
7735  *
7736  * Since: 2.6
7737  **/
7738 gboolean
7739 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7740 {
7741   return tree_view->priv->fixed_height_mode;
7742 }
7743
7744 /* Returns TRUE if the focus is within the headers, after the focus operation is
7745  * done
7746  */
7747 static gboolean
7748 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7749                             GtkDirectionType  dir,
7750                             gboolean          clamp_column_visible)
7751 {
7752   GtkWidget *focus_child;
7753
7754   GList *last_column, *first_column;
7755   GList *tmp_list;
7756   gboolean rtl;
7757
7758   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7759     return FALSE;
7760
7761   focus_child = GTK_CONTAINER (tree_view)->focus_child;
7762
7763   first_column = tree_view->priv->columns;
7764   while (first_column)
7765     {
7766       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7767           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7768           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7769            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7770         break;
7771       first_column = first_column->next;
7772     }
7773
7774   /* No headers are visible, or are focusable.  We can't focus in or out.
7775    */
7776   if (first_column == NULL)
7777     return FALSE;
7778
7779   last_column = g_list_last (tree_view->priv->columns);
7780   while (last_column)
7781     {
7782       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7783           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7784           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7785            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7786         break;
7787       last_column = last_column->prev;
7788     }
7789
7790
7791   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7792
7793   switch (dir)
7794     {
7795     case GTK_DIR_TAB_BACKWARD:
7796     case GTK_DIR_TAB_FORWARD:
7797     case GTK_DIR_UP:
7798     case GTK_DIR_DOWN:
7799       if (focus_child == NULL)
7800         {
7801           if (tree_view->priv->focus_column != NULL && GTK_WIDGET_CAN_FOCUS (tree_view->priv->focus_column->button))
7802             focus_child = tree_view->priv->focus_column->button;
7803           else
7804             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7805           gtk_widget_grab_focus (focus_child);
7806           break;
7807         }
7808       return FALSE;
7809
7810     case GTK_DIR_LEFT:
7811     case GTK_DIR_RIGHT:
7812       if (focus_child == NULL)
7813         {
7814           if (tree_view->priv->focus_column != NULL)
7815             focus_child = tree_view->priv->focus_column->button;
7816           else if (dir == GTK_DIR_LEFT)
7817             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7818           else
7819             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7820           gtk_widget_grab_focus (focus_child);
7821           break;
7822         }
7823
7824       if (gtk_widget_child_focus (focus_child, dir))
7825         {
7826           /* The focus moves inside the button. */
7827           /* This is probably a great example of bad UI */
7828           break;
7829         }
7830
7831       /* We need to move the focus among the row of buttons. */
7832       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7833         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7834           break;
7835
7836       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7837           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7838         {
7839           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7840           break;
7841         }
7842
7843       while (tmp_list)
7844         {
7845           GtkTreeViewColumn *column;
7846
7847           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7848             tmp_list = tmp_list->next;
7849           else
7850             tmp_list = tmp_list->prev;
7851
7852           if (tmp_list == NULL)
7853             {
7854               g_warning ("Internal button not found");
7855               break;
7856             }
7857           column = tmp_list->data;
7858           if (column->button &&
7859               column->visible &&
7860               GTK_WIDGET_CAN_FOCUS (column->button))
7861             {
7862               focus_child = column->button;
7863               gtk_widget_grab_focus (column->button);
7864               break;
7865             }
7866         }
7867       break;
7868     default:
7869       g_assert_not_reached ();
7870       break;
7871     }
7872
7873   /* if focus child is non-null, we assume it's been set to the current focus child
7874    */
7875   if (focus_child)
7876     {
7877       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7878         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7879           {
7880             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7881             break;
7882           }
7883
7884       if (clamp_column_visible)
7885         {
7886           gtk_tree_view_clamp_column_visible (tree_view,
7887                                               tree_view->priv->focus_column,
7888                                               FALSE);
7889         }
7890     }
7891
7892   return (focus_child != NULL);
7893 }
7894
7895 /* This function returns in 'path' the first focusable path, if the given path
7896  * is already focusable, it's the returned one.
7897  */
7898 static gboolean
7899 search_first_focusable_path (GtkTreeView  *tree_view,
7900                              GtkTreePath **path,
7901                              gboolean      search_forward,
7902                              GtkRBTree   **new_tree,
7903                              GtkRBNode   **new_node)
7904 {
7905   GtkRBTree *tree = NULL;
7906   GtkRBNode *node = NULL;
7907
7908   if (!path || !*path)
7909     return FALSE;
7910
7911   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7912
7913   if (!tree || !node)
7914     return FALSE;
7915
7916   while (node && row_is_separator (tree_view, NULL, *path))
7917     {
7918       if (search_forward)
7919         _gtk_rbtree_next_full (tree, node, &tree, &node);
7920       else
7921         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7922
7923       if (*path)
7924         gtk_tree_path_free (*path);
7925
7926       if (node)
7927         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7928       else
7929         *path = NULL;
7930     }
7931
7932   if (new_tree)
7933     *new_tree = tree;
7934
7935   if (new_node)
7936     *new_node = node;
7937
7938   return (*path != NULL);
7939 }
7940
7941 static gint
7942 gtk_tree_view_focus (GtkWidget        *widget,
7943                      GtkDirectionType  direction)
7944 {
7945   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7946   GtkContainer *container = GTK_CONTAINER (widget);
7947   GtkWidget *focus_child;
7948
7949   if (!GTK_WIDGET_IS_SENSITIVE (container) || !GTK_WIDGET_CAN_FOCUS (widget))
7950     return FALSE;
7951
7952   focus_child = container->focus_child;
7953
7954   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7955   /* Case 1.  Headers currently have focus. */
7956   if (focus_child)
7957     {
7958       switch (direction)
7959         {
7960         case GTK_DIR_LEFT:
7961         case GTK_DIR_RIGHT:
7962           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7963           return TRUE;
7964         case GTK_DIR_TAB_BACKWARD:
7965         case GTK_DIR_UP:
7966           return FALSE;
7967         case GTK_DIR_TAB_FORWARD:
7968         case GTK_DIR_DOWN:
7969           gtk_widget_grab_focus (widget);
7970           return TRUE;
7971         default:
7972           g_assert_not_reached ();
7973           return FALSE;
7974         }
7975     }
7976
7977   /* Case 2. We don't have focus at all. */
7978   if (!GTK_WIDGET_HAS_FOCUS (container))
7979     {
7980       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
7981         gtk_widget_grab_focus (widget);
7982       return TRUE;
7983     }
7984
7985   /* Case 3. We have focus already. */
7986   if (direction == GTK_DIR_TAB_BACKWARD)
7987     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
7988   else if (direction == GTK_DIR_TAB_FORWARD)
7989     return FALSE;
7990
7991   /* Other directions caught by the keybindings */
7992   gtk_widget_grab_focus (widget);
7993   return TRUE;
7994 }
7995
7996 static void
7997 gtk_tree_view_grab_focus (GtkWidget *widget)
7998 {
7999   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8000
8001   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8002 }
8003
8004 static void
8005 gtk_tree_view_style_set (GtkWidget *widget,
8006                          GtkStyle *previous_style)
8007 {
8008   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8009   GList *list;
8010   GtkTreeViewColumn *column;
8011
8012   if (GTK_WIDGET_REALIZED (widget))
8013     {
8014       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8015       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8016       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8017
8018       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8019       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8020     }
8021
8022   gtk_widget_style_get (widget,
8023                         "expander-size", &tree_view->priv->expander_size,
8024                         NULL);
8025   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8026
8027   for (list = tree_view->priv->columns; list; list = list->next)
8028     {
8029       column = list->data;
8030       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8031     }
8032
8033   tree_view->priv->fixed_height = -1;
8034   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8035
8036   gtk_widget_queue_resize (widget);
8037 }
8038
8039
8040 static void
8041 gtk_tree_view_set_focus_child (GtkContainer *container,
8042                                GtkWidget    *child)
8043 {
8044   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8045   GList *list;
8046
8047   for (list = tree_view->priv->columns; list; list = list->next)
8048     {
8049       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8050         {
8051           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8052           break;
8053         }
8054     }
8055
8056   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8057 }
8058
8059 static void
8060 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8061                                GtkAdjustment *hadj,
8062                                GtkAdjustment *vadj)
8063 {
8064   gboolean need_adjust = FALSE;
8065
8066   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8067
8068   if (hadj)
8069     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8070   else
8071     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8072   if (vadj)
8073     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8074   else
8075     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8076
8077   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8078     {
8079       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8080                                             gtk_tree_view_adjustment_changed,
8081                                             tree_view);
8082       g_object_unref (tree_view->priv->hadjustment);
8083     }
8084
8085   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8086     {
8087       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8088                                             gtk_tree_view_adjustment_changed,
8089                                             tree_view);
8090       g_object_unref (tree_view->priv->vadjustment);
8091     }
8092
8093   if (tree_view->priv->hadjustment != hadj)
8094     {
8095       tree_view->priv->hadjustment = hadj;
8096       g_object_ref_sink (tree_view->priv->hadjustment);
8097
8098       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8099                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8100                         tree_view);
8101       need_adjust = TRUE;
8102     }
8103
8104   if (tree_view->priv->vadjustment != vadj)
8105     {
8106       tree_view->priv->vadjustment = vadj;
8107       g_object_ref_sink (tree_view->priv->vadjustment);
8108
8109       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8110                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8111                         tree_view);
8112       need_adjust = TRUE;
8113     }
8114
8115   if (need_adjust)
8116     gtk_tree_view_adjustment_changed (NULL, tree_view);
8117 }
8118
8119
8120 static gboolean
8121 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8122                                 GtkMovementStep    step,
8123                                 gint               count)
8124 {
8125   GdkModifierType state;
8126
8127   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8128   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8129                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8130                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8131                         step == GTK_MOVEMENT_PAGES ||
8132                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8133
8134   if (tree_view->priv->tree == NULL)
8135     return FALSE;
8136   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
8137     return FALSE;
8138
8139   gtk_tree_view_stop_editing (tree_view, FALSE);
8140   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8141   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8142
8143   if (gtk_get_current_event_state (&state))
8144     {
8145       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8146         tree_view->priv->ctrl_pressed = TRUE;
8147       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8148         tree_view->priv->shift_pressed = TRUE;
8149     }
8150   /* else we assume not pressed */
8151
8152   switch (step)
8153     {
8154       /* currently we make no distinction.  When we go bi-di, we need to */
8155     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8156     case GTK_MOVEMENT_VISUAL_POSITIONS:
8157       gtk_tree_view_move_cursor_left_right (tree_view, count);
8158       break;
8159     case GTK_MOVEMENT_DISPLAY_LINES:
8160       gtk_tree_view_move_cursor_up_down (tree_view, count);
8161       break;
8162     case GTK_MOVEMENT_PAGES:
8163       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8164       break;
8165     case GTK_MOVEMENT_BUFFER_ENDS:
8166       gtk_tree_view_move_cursor_start_end (tree_view, count);
8167       break;
8168     default:
8169       g_assert_not_reached ();
8170     }
8171
8172   tree_view->priv->ctrl_pressed = FALSE;
8173   tree_view->priv->shift_pressed = FALSE;
8174
8175   return TRUE;
8176 }
8177
8178 static void
8179 gtk_tree_view_put (GtkTreeView *tree_view,
8180                    GtkWidget   *child_widget,
8181                    /* in bin_window coordinates */
8182                    gint         x,
8183                    gint         y,
8184                    gint         width,
8185                    gint         height)
8186 {
8187   GtkTreeViewChild *child;
8188
8189   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8190   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8191
8192   child = g_slice_new (GtkTreeViewChild);
8193
8194   child->widget = child_widget;
8195   child->x = x;
8196   child->y = y;
8197   child->width = width;
8198   child->height = height;
8199
8200   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8201
8202   if (GTK_WIDGET_REALIZED (tree_view))
8203     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8204
8205   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8206 }
8207
8208 void
8209 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8210                                   GtkWidget   *widget,
8211                                   /* in tree coordinates */
8212                                   gint         x,
8213                                   gint         y,
8214                                   gint         width,
8215                                   gint         height)
8216 {
8217   GtkTreeViewChild *child = NULL;
8218   GList *list;
8219   GdkRectangle allocation;
8220
8221   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8222   g_return_if_fail (GTK_IS_WIDGET (widget));
8223
8224   for (list = tree_view->priv->children; list; list = list->next)
8225     {
8226       if (((GtkTreeViewChild *)list->data)->widget == widget)
8227         {
8228           child = list->data;
8229           break;
8230         }
8231     }
8232   if (child == NULL)
8233     return;
8234
8235   allocation.x = child->x = x;
8236   allocation.y = child->y = y;
8237   allocation.width = child->width = width;
8238   allocation.height = child->height = height;
8239
8240   if (GTK_WIDGET_REALIZED (widget))
8241     gtk_widget_size_allocate (widget, &allocation);
8242 }
8243
8244
8245 /* TreeModel Callbacks
8246  */
8247
8248 static void
8249 gtk_tree_view_row_changed (GtkTreeModel *model,
8250                            GtkTreePath  *path,
8251                            GtkTreeIter  *iter,
8252                            gpointer      data)
8253 {
8254   GtkTreeView *tree_view = (GtkTreeView *)data;
8255   GtkRBTree *tree;
8256   GtkRBNode *node;
8257   gboolean free_path = FALSE;
8258   GList *list;
8259   GtkTreePath *cursor_path;
8260
8261   g_return_if_fail (path != NULL || iter != NULL);
8262
8263   if (tree_view->priv->cursor != NULL)
8264     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8265   else
8266     cursor_path = NULL;
8267
8268   if (tree_view->priv->edited_column &&
8269       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8270     gtk_tree_view_stop_editing (tree_view, TRUE);
8271
8272   if (cursor_path != NULL)
8273     gtk_tree_path_free (cursor_path);
8274
8275   if (path == NULL)
8276     {
8277       path = gtk_tree_model_get_path (model, iter);
8278       free_path = TRUE;
8279     }
8280   else if (iter == NULL)
8281     gtk_tree_model_get_iter (model, iter, path);
8282
8283   if (_gtk_tree_view_find_node (tree_view,
8284                                 path,
8285                                 &tree,
8286                                 &node))
8287     /* We aren't actually showing the node */
8288     goto done;
8289
8290   if (tree == NULL)
8291     goto done;
8292
8293   if (tree_view->priv->fixed_height_mode
8294       && tree_view->priv->fixed_height >= 0)
8295     {
8296       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8297       if (GTK_WIDGET_REALIZED (tree_view))
8298         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8299     }
8300   else
8301     {
8302       _gtk_rbtree_node_mark_invalid (tree, node);
8303       for (list = tree_view->priv->columns; list; list = list->next)
8304         {
8305           GtkTreeViewColumn *column;
8306
8307           column = list->data;
8308           if (! column->visible)
8309             continue;
8310
8311           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8312             {
8313               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8314             }
8315         }
8316     }
8317
8318  done:
8319   if (GTK_WIDGET_REALIZED (tree_view) && !tree_view->priv->fixed_height_mode)
8320     install_presize_handler (tree_view);
8321   if (free_path)
8322     gtk_tree_path_free (path);
8323 }
8324
8325 static void
8326 gtk_tree_view_row_inserted (GtkTreeModel *model,
8327                             GtkTreePath  *path,
8328                             GtkTreeIter  *iter,
8329                             gpointer      data)
8330 {
8331   GtkTreeView *tree_view = (GtkTreeView *) data;
8332   gint *indices;
8333   GtkRBTree *tmptree, *tree;
8334   GtkRBNode *tmpnode = NULL;
8335   gint depth;
8336   gint i = 0;
8337   gint height;
8338   gboolean free_path = FALSE;
8339   gboolean node_visible = TRUE;
8340
8341   g_return_if_fail (path != NULL || iter != NULL);
8342
8343   if (tree_view->priv->fixed_height_mode
8344       && tree_view->priv->fixed_height >= 0)
8345     height = tree_view->priv->fixed_height;
8346   else
8347     height = 0;
8348
8349   if (path == NULL)
8350     {
8351       path = gtk_tree_model_get_path (model, iter);
8352       free_path = TRUE;
8353     }
8354   else if (iter == NULL)
8355     gtk_tree_model_get_iter (model, iter, path);
8356
8357   if (tree_view->priv->tree == NULL)
8358     tree_view->priv->tree = _gtk_rbtree_new ();
8359
8360   tmptree = tree = tree_view->priv->tree;
8361
8362   /* Update all row-references */
8363   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8364   depth = gtk_tree_path_get_depth (path);
8365   indices = gtk_tree_path_get_indices (path);
8366
8367   /* First, find the parent tree */
8368   while (i < depth - 1)
8369     {
8370       if (tmptree == NULL)
8371         {
8372           /* We aren't showing the node */
8373           node_visible = FALSE;
8374           goto done;
8375         }
8376
8377       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8378       if (tmpnode == NULL)
8379         {
8380           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8381                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8382                      "before the parent was inserted.");
8383           goto done;
8384         }
8385       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8386         {
8387           /* FIXME enforce correct behavior on model, probably */
8388           /* In theory, the model should have emitted has_child_toggled here.  We
8389            * try to catch it anyway, just to be safe, in case the model hasn't.
8390            */
8391           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8392                                                            tree,
8393                                                            tmpnode);
8394           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8395           gtk_tree_path_free (tmppath);
8396           goto done;
8397         }
8398
8399       tmptree = tmpnode->children;
8400       tree = tmptree;
8401       i++;
8402     }
8403
8404   if (tree == NULL)
8405     {
8406       node_visible = FALSE;
8407       goto done;
8408     }
8409
8410   /* ref the node */
8411   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8412   if (indices[depth - 1] == 0)
8413     {
8414       tmpnode = _gtk_rbtree_find_count (tree, 1);
8415       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8416     }
8417   else
8418     {
8419       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8420       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8421     }
8422
8423  done:
8424   if (height > 0)
8425     {
8426       if (tree)
8427         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8428
8429       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8430         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8431       else
8432         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8433     }
8434   else
8435     install_presize_handler (tree_view);
8436   if (free_path)
8437     gtk_tree_path_free (path);
8438 }
8439
8440 static void
8441 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8442                                      GtkTreePath  *path,
8443                                      GtkTreeIter  *iter,
8444                                      gpointer      data)
8445 {
8446   GtkTreeView *tree_view = (GtkTreeView *)data;
8447   GtkTreeIter real_iter;
8448   gboolean has_child;
8449   GtkRBTree *tree;
8450   GtkRBNode *node;
8451   gboolean free_path = FALSE;
8452
8453   g_return_if_fail (path != NULL || iter != NULL);
8454
8455   if (iter)
8456     real_iter = *iter;
8457
8458   if (path == NULL)
8459     {
8460       path = gtk_tree_model_get_path (model, iter);
8461       free_path = TRUE;
8462     }
8463   else if (iter == NULL)
8464     gtk_tree_model_get_iter (model, &real_iter, path);
8465
8466   if (_gtk_tree_view_find_node (tree_view,
8467                                 path,
8468                                 &tree,
8469                                 &node))
8470     /* We aren't actually showing the node */
8471     goto done;
8472
8473   if (tree == NULL)
8474     goto done;
8475
8476   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8477   /* Sanity check.
8478    */
8479   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8480     goto done;
8481
8482   if (has_child)
8483     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8484   else
8485     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8486
8487   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8488     {
8489       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8490       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8491         {
8492           GList *list;
8493
8494           for (list = tree_view->priv->columns; list; list = list->next)
8495             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8496               {
8497                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8498                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8499                 break;
8500               }
8501         }
8502       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8503     }
8504   else
8505     {
8506       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8507     }
8508
8509  done:
8510   if (free_path)
8511     gtk_tree_path_free (path);
8512 }
8513
8514 static void
8515 count_children_helper (GtkRBTree *tree,
8516                        GtkRBNode *node,
8517                        gpointer   data)
8518 {
8519   if (node->children)
8520     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8521   (*((gint *)data))++;
8522 }
8523
8524 static void
8525 check_selection_helper (GtkRBTree *tree,
8526                         GtkRBNode *node,
8527                         gpointer   data)
8528 {
8529   gint *value = (gint *)data;
8530
8531   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8532
8533   if (node->children && !*value)
8534     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8535 }
8536
8537 static void
8538 gtk_tree_view_row_deleted (GtkTreeModel *model,
8539                            GtkTreePath  *path,
8540                            gpointer      data)
8541 {
8542   GtkTreeView *tree_view = (GtkTreeView *)data;
8543   GtkRBTree *tree;
8544   GtkRBNode *node;
8545   GList *list;
8546   gint selection_changed = FALSE;
8547
8548   g_return_if_fail (path != NULL);
8549
8550   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8551
8552   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8553     return;
8554
8555   if (tree == NULL)
8556     return;
8557
8558   /* check if the selection has been changed */
8559   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8560                         check_selection_helper, &selection_changed);
8561
8562   for (list = tree_view->priv->columns; list; list = list->next)
8563     if (((GtkTreeViewColumn *)list->data)->visible &&
8564         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8565       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8566
8567   /* Ensure we don't have a dangling pointer to a dead node */
8568   ensure_unprelighted (tree_view);
8569
8570   /* Cancel editting if we've started */
8571   gtk_tree_view_stop_editing (tree_view, TRUE);
8572
8573   /* If we have a node expanded/collapsed timeout, remove it */
8574   remove_expand_collapse_timeout (tree_view);
8575
8576   if (tree_view->priv->destroy_count_func)
8577     {
8578       gint child_count = 0;
8579       if (node->children)
8580         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8581       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8582     }
8583
8584   if (tree->root->count == 1)
8585     {
8586       if (tree_view->priv->tree == tree)
8587         tree_view->priv->tree = NULL;
8588
8589       _gtk_rbtree_remove (tree);
8590     }
8591   else
8592     {
8593       _gtk_rbtree_remove_node (tree, node);
8594     }
8595
8596   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8597     {
8598       gtk_tree_row_reference_free (tree_view->priv->top_row);
8599       tree_view->priv->top_row = NULL;
8600     }
8601
8602   install_scroll_sync_handler (tree_view);
8603
8604   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8605
8606   if (selection_changed)
8607     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8608 }
8609
8610 static void
8611 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8612                               GtkTreePath  *parent,
8613                               GtkTreeIter  *iter,
8614                               gint         *new_order,
8615                               gpointer      data)
8616 {
8617   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8618   GtkRBTree *tree;
8619   GtkRBNode *node;
8620   gint len;
8621
8622   len = gtk_tree_model_iter_n_children (model, iter);
8623
8624   if (len < 2)
8625     return;
8626
8627   gtk_tree_row_reference_reordered (G_OBJECT (data),
8628                                     parent,
8629                                     iter,
8630                                     new_order);
8631
8632   if (_gtk_tree_view_find_node (tree_view,
8633                                 parent,
8634                                 &tree,
8635                                 &node))
8636     return;
8637
8638   /* We need to special case the parent path */
8639   if (tree == NULL)
8640     tree = tree_view->priv->tree;
8641   else
8642     tree = node->children;
8643
8644   if (tree == NULL)
8645     return;
8646
8647   if (tree_view->priv->edited_column)
8648     gtk_tree_view_stop_editing (tree_view, TRUE);
8649
8650   /* we need to be unprelighted */
8651   ensure_unprelighted (tree_view);
8652
8653   /* clear the timeout */
8654   cancel_arrow_animation (tree_view);
8655
8656   _gtk_rbtree_reorder (tree, new_order, len);
8657
8658   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8659
8660   gtk_tree_view_dy_to_top_row (tree_view);
8661 }
8662
8663
8664 /* Internal tree functions
8665  */
8666
8667
8668 static void
8669 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8670                                      GtkRBTree         *tree,
8671                                      GtkTreeViewColumn *column,
8672                                      gint              *x1,
8673                                      gint              *x2)
8674 {
8675   GtkTreeViewColumn *tmp_column = NULL;
8676   gint total_width;
8677   GList *list;
8678   gboolean rtl;
8679
8680   if (x1)
8681     *x1 = 0;
8682
8683   if (x2)
8684     *x2 = 0;
8685
8686   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8687
8688   total_width = 0;
8689   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8690        list;
8691        list = (rtl ? list->prev : list->next))
8692     {
8693       tmp_column = list->data;
8694
8695       if (tmp_column == column)
8696         break;
8697
8698       if (tmp_column->visible)
8699         total_width += tmp_column->width;
8700     }
8701
8702   if (tmp_column != column)
8703     {
8704       g_warning (G_STRLOC": passed-in column isn't in the tree");
8705       return;
8706     }
8707
8708   if (x1)
8709     *x1 = total_width;
8710
8711   if (x2)
8712     {
8713       if (column->visible)
8714         *x2 = total_width + column->width;
8715       else
8716         *x2 = total_width; /* width of 0 */
8717     }
8718 }
8719 static void
8720 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8721                                 GtkRBTree   *tree,
8722                                 gint        *x1,
8723                                 gint        *x2)
8724 {
8725   gint x_offset = 0;
8726   GList *list;
8727   GtkTreeViewColumn *tmp_column = NULL;
8728   gint total_width;
8729   gboolean indent_expanders;
8730   gboolean rtl;
8731
8732   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8733
8734   total_width = 0;
8735   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8736        list;
8737        list = (rtl ? list->prev : list->next))
8738     {
8739       tmp_column = list->data;
8740
8741       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8742         {
8743           if (rtl)
8744             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8745           else
8746             x_offset = total_width;
8747           break;
8748         }
8749
8750       if (tmp_column->visible)
8751         total_width += tmp_column->width;
8752     }
8753
8754   gtk_widget_style_get (GTK_WIDGET (tree_view),
8755                         "indent-expanders", &indent_expanders,
8756                         NULL);
8757
8758   if (indent_expanders)
8759     {
8760       if (rtl)
8761         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8762       else
8763         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8764     }
8765
8766   *x1 = x_offset;
8767
8768   if (tmp_column && tmp_column->visible)
8769     /* +1 because x2 isn't included in the range. */
8770     *x2 = *x1 + tree_view->priv->expander_size + 1;
8771   else
8772     *x2 = *x1;
8773 }
8774
8775 static void
8776 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8777                           GtkRBTree   *tree,
8778                           GtkTreeIter *iter,
8779                           gint         depth,
8780                           gboolean     recurse)
8781 {
8782   GtkRBNode *temp = NULL;
8783   GtkTreePath *path = NULL;
8784   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8785
8786   do
8787     {
8788       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8789       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8790
8791       if (tree_view->priv->fixed_height > 0)
8792         {
8793           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8794             {
8795               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8796               _gtk_rbtree_node_mark_valid (tree, temp);
8797             }
8798         }
8799
8800       if (is_list)
8801         continue;
8802
8803       if (recurse)
8804         {
8805           GtkTreeIter child;
8806
8807           if (!path)
8808             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8809           else
8810             gtk_tree_path_next (path);
8811
8812           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8813             {
8814               gboolean expand;
8815
8816               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8817
8818               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8819                   && !expand)
8820                 {
8821                   temp->children = _gtk_rbtree_new ();
8822                   temp->children->parent_tree = tree;
8823                   temp->children->parent_node = temp;
8824                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8825                 }
8826             }
8827         }
8828
8829       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8830         {
8831           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8832             temp->flags ^= GTK_RBNODE_IS_PARENT;
8833         }
8834     }
8835   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8836
8837   if (path)
8838     gtk_tree_path_free (path);
8839 }
8840
8841 /* Make sure the node is visible vertically */
8842 static void
8843 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8844                                   GtkRBTree   *tree,
8845                                   GtkRBNode   *node)
8846 {
8847   gint node_dy, height;
8848   GtkTreePath *path = NULL;
8849
8850   if (!GTK_WIDGET_REALIZED (tree_view))
8851     return;
8852
8853   /* just return if the node is visible, avoiding a costly expose */
8854   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8855   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8856   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8857       && node_dy >= tree_view->priv->vadjustment->value
8858       && node_dy + height <= (tree_view->priv->vadjustment->value
8859                               + tree_view->priv->vadjustment->page_size))
8860     return;
8861
8862   path = _gtk_tree_view_find_path (tree_view, tree, node);
8863   if (path)
8864     {
8865       /* We process updates because we want to clear old selected items when we scroll.
8866        * if this is removed, we get a "selection streak" at the bottom. */
8867       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8868       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8869       gtk_tree_path_free (path);
8870     }
8871 }
8872
8873 static void
8874 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8875                                     GtkTreeViewColumn *column,
8876                                     gboolean           focus_to_cell)
8877 {
8878   gint x, width;
8879
8880   if (column == NULL)
8881     return;
8882
8883   x = column->button->allocation.x;
8884   width = column->button->allocation.width;
8885
8886   if (width > tree_view->priv->hadjustment->page_size)
8887     {
8888       /* The column is larger than the horizontal page size.  If the
8889        * column has cells which can be focussed individually, then we make
8890        * sure the cell which gets focus is fully visible (if even the
8891        * focus cell is bigger than the page size, we make sure the
8892        * left-hand side of the cell is visible).
8893        *
8894        * If the column does not have those so-called special cells, we
8895        * make sure the left-hand side of the column is visible.
8896        */
8897
8898       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8899         {
8900           GtkTreePath *cursor_path;
8901           GdkRectangle background_area, cell_area, focus_area;
8902
8903           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8904
8905           gtk_tree_view_get_cell_area (tree_view,
8906                                        cursor_path, column, &cell_area);
8907           gtk_tree_view_get_background_area (tree_view,
8908                                              cursor_path, column,
8909                                              &background_area);
8910
8911           gtk_tree_path_free (cursor_path);
8912
8913           _gtk_tree_view_column_get_focus_area (column,
8914                                                 &background_area,
8915                                                 &cell_area,
8916                                                 &focus_area);
8917
8918           x = focus_area.x;
8919           width = focus_area.width;
8920
8921           if (width < tree_view->priv->hadjustment->page_size)
8922             {
8923               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8924                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8925                                           x + width - tree_view->priv->hadjustment->page_size);
8926               else if (tree_view->priv->hadjustment->value > x)
8927                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8928             }
8929         }
8930
8931       gtk_adjustment_set_value (tree_view->priv->hadjustment,
8932                                 CLAMP (x,
8933                                        tree_view->priv->hadjustment->lower,
8934                                        tree_view->priv->hadjustment->upper
8935                                        - tree_view->priv->hadjustment->page_size));
8936     }
8937   else
8938     {
8939       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8940           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8941                                     x + width - tree_view->priv->hadjustment->page_size);
8942       else if (tree_view->priv->hadjustment->value > x)
8943         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8944   }
8945 }
8946
8947 /* This function could be more efficient.  I'll optimize it if profiling seems
8948  * to imply that it is important */
8949 GtkTreePath *
8950 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8951                           GtkRBTree   *tree,
8952                           GtkRBNode   *node)
8953 {
8954   GtkTreePath *path;
8955   GtkRBTree *tmp_tree;
8956   GtkRBNode *tmp_node, *last;
8957   gint count;
8958
8959   path = gtk_tree_path_new ();
8960
8961   g_return_val_if_fail (node != NULL, path);
8962   g_return_val_if_fail (node != tree->nil, path);
8963
8964   count = 1 + node->left->count;
8965
8966   last = node;
8967   tmp_node = node->parent;
8968   tmp_tree = tree;
8969   while (tmp_tree)
8970     {
8971       while (tmp_node != tmp_tree->nil)
8972         {
8973           if (tmp_node->right == last)
8974             count += 1 + tmp_node->left->count;
8975           last = tmp_node;
8976           tmp_node = tmp_node->parent;
8977         }
8978       gtk_tree_path_prepend_index (path, count - 1);
8979       last = tmp_tree->parent_node;
8980       tmp_tree = tmp_tree->parent_tree;
8981       if (last)
8982         {
8983           count = 1 + last->left->count;
8984           tmp_node = last->parent;
8985         }
8986     }
8987   return path;
8988 }
8989
8990 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
8991  * invalid (ie. points to a node that's not in the tree), *tree and *node are
8992  * both set to NULL.
8993  */
8994 gboolean
8995 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
8996                           GtkTreePath  *path,
8997                           GtkRBTree   **tree,
8998                           GtkRBNode   **node)
8999 {
9000   GtkRBNode *tmpnode = NULL;
9001   GtkRBTree *tmptree = tree_view->priv->tree;
9002   gint *indices = gtk_tree_path_get_indices (path);
9003   gint depth = gtk_tree_path_get_depth (path);
9004   gint i = 0;
9005
9006   *node = NULL;
9007   *tree = NULL;
9008
9009   if (depth == 0 || tmptree == NULL)
9010     return FALSE;
9011   do
9012     {
9013       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9014       ++i;
9015       if (tmpnode == NULL)
9016         {
9017           *tree = NULL;
9018           *node = NULL;
9019           return FALSE;
9020         }
9021       if (i >= depth)
9022         {
9023           *tree = tmptree;
9024           *node = tmpnode;
9025           return FALSE;
9026         }
9027       *tree = tmptree;
9028       *node = tmpnode;
9029       tmptree = tmpnode->children;
9030       if (tmptree == NULL)
9031         return TRUE;
9032     }
9033   while (1);
9034 }
9035
9036 static gboolean
9037 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9038                                   GtkTreeViewColumn *column)
9039 {
9040   GList *list;
9041
9042   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9043     return FALSE;
9044
9045   if (tree_view->priv->expander_column != NULL)
9046     {
9047       if (tree_view->priv->expander_column == column)
9048         return TRUE;
9049       return FALSE;
9050     }
9051   else
9052     {
9053       for (list = tree_view->priv->columns;
9054            list;
9055            list = list->next)
9056         if (((GtkTreeViewColumn *)list->data)->visible)
9057           break;
9058       if (list && list->data == column)
9059         return TRUE;
9060     }
9061   return FALSE;
9062 }
9063
9064 static void
9065 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9066                                 guint           keyval,
9067                                 guint           modmask,
9068                                 gboolean        add_shifted_binding,
9069                                 GtkMovementStep step,
9070                                 gint            count)
9071 {
9072
9073   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9074                                 "move-cursor", 2,
9075                                 G_TYPE_ENUM, step,
9076                                 G_TYPE_INT, count);
9077
9078   if (add_shifted_binding)
9079     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9080                                   "move-cursor", 2,
9081                                   G_TYPE_ENUM, step,
9082                                   G_TYPE_INT, count);
9083
9084   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9085    return;
9086
9087   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9088                                 "move-cursor", 2,
9089                                 G_TYPE_ENUM, step,
9090                                 G_TYPE_INT, count);
9091
9092   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9093                                 "move-cursor", 2,
9094                                 G_TYPE_ENUM, step,
9095                                 G_TYPE_INT, count);
9096 }
9097
9098 static gint
9099 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9100                                  GtkTreeIter  *iter,
9101                                  GtkRBTree    *tree,
9102                                  GtkRBNode    *node)
9103 {
9104   gint retval = FALSE;
9105   do
9106     {
9107       g_return_val_if_fail (node != NULL, FALSE);
9108
9109       if (node->children)
9110         {
9111           GtkTreeIter child;
9112           GtkRBTree *new_tree;
9113           GtkRBNode *new_node;
9114
9115           new_tree = node->children;
9116           new_node = new_tree->root;
9117
9118           while (new_node && new_node->left != new_tree->nil)
9119             new_node = new_node->left;
9120
9121           if (!gtk_tree_model_iter_children (model, &child, iter))
9122             return FALSE;
9123
9124           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9125         }
9126
9127       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9128         retval = TRUE;
9129       gtk_tree_model_unref_node (model, iter);
9130       node = _gtk_rbtree_next (tree, node);
9131     }
9132   while (gtk_tree_model_iter_next (model, iter));
9133
9134   return retval;
9135 }
9136
9137 static gint
9138 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9139                                               GtkRBTree   *tree)
9140 {
9141   GtkTreeIter iter;
9142   GtkTreePath *path;
9143   GtkRBNode *node;
9144   gint retval;
9145
9146   if (!tree)
9147     return FALSE;
9148
9149   node = tree->root;
9150   while (node && node->left != tree->nil)
9151     node = node->left;
9152
9153   g_return_val_if_fail (node != NULL, FALSE);
9154   path = _gtk_tree_view_find_path (tree_view, tree, node);
9155   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9156                            &iter, path);
9157   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9158   gtk_tree_path_free (path);
9159
9160   return retval;
9161 }
9162
9163 static void
9164 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9165                                     GtkTreeViewColumn *column)
9166 {
9167   GtkTreeViewColumn *left_column;
9168   GtkTreeViewColumn *cur_column = NULL;
9169   GtkTreeViewColumnReorder *reorder;
9170   gboolean rtl;
9171   GList *tmp_list;
9172   gint left;
9173
9174   /* We want to precalculate the motion list such that we know what column slots
9175    * are available.
9176    */
9177   left_column = NULL;
9178   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9179
9180   /* First, identify all possible drop spots */
9181   if (rtl)
9182     tmp_list = g_list_last (tree_view->priv->columns);
9183   else
9184     tmp_list = g_list_first (tree_view->priv->columns);
9185
9186   while (tmp_list)
9187     {
9188       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9189       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9190
9191       if (cur_column->visible == FALSE)
9192         continue;
9193
9194       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9195       if (left_column != column && cur_column != column &&
9196           tree_view->priv->column_drop_func &&
9197           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9198         {
9199           left_column = cur_column;
9200           continue;
9201         }
9202       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9203       reorder->left_column = left_column;
9204       left_column = reorder->right_column = cur_column;
9205
9206       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9207     }
9208
9209   /* Add the last one */
9210   if (tree_view->priv->column_drop_func == NULL ||
9211       ((left_column != column) &&
9212        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9213     {
9214       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9215       reorder->left_column = left_column;
9216       reorder->right_column = NULL;
9217       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9218     }
9219
9220   /* We quickly check to see if it even makes sense to reorder columns. */
9221   /* If there is nothing that can be moved, then we return */
9222
9223   if (tree_view->priv->column_drag_info == NULL)
9224     return;
9225
9226   /* We know there are always 2 slots possbile, as you can always return column. */
9227   /* If that's all there is, return */
9228   if (tree_view->priv->column_drag_info->next == NULL ||
9229       (tree_view->priv->column_drag_info->next->next == NULL &&
9230        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9231        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9232     {
9233       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9234         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9235       g_list_free (tree_view->priv->column_drag_info);
9236       tree_view->priv->column_drag_info = NULL;
9237       return;
9238     }
9239   /* We fill in the ranges for the columns, now that we've isolated them */
9240   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9241
9242   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9243     {
9244       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9245
9246       reorder->left_align = left;
9247       if (tmp_list->next != NULL)
9248         {
9249           g_assert (tmp_list->next->data);
9250           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9251                                          reorder->right_column->button->allocation.width +
9252                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9253         }
9254       else
9255         {
9256           gint width;
9257
9258           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9259           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9260         }
9261     }
9262 }
9263
9264 void
9265 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9266                                   GtkTreeViewColumn *column)
9267 {
9268   GdkEvent *send_event;
9269   GtkAllocation allocation;
9270   gint x, y, width, height;
9271   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9272   GdkDisplay *display = gdk_screen_get_display (screen);
9273
9274   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9275   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9276
9277   gtk_tree_view_set_column_drag_info (tree_view, column);
9278
9279   if (tree_view->priv->column_drag_info == NULL)
9280     return;
9281
9282   if (tree_view->priv->drag_window == NULL)
9283     {
9284       GdkWindowAttr attributes;
9285       guint attributes_mask;
9286
9287       attributes.window_type = GDK_WINDOW_CHILD;
9288       attributes.wclass = GDK_INPUT_OUTPUT;
9289       attributes.x = column->button->allocation.x;
9290       attributes.y = 0;
9291       attributes.width = column->button->allocation.width;
9292       attributes.height = column->button->allocation.height;
9293       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9294       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9295       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9296       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9297
9298       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9299                                                      &attributes,
9300                                                      attributes_mask);
9301       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9302     }
9303
9304   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9305   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9306
9307   gtk_grab_remove (column->button);
9308
9309   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9310   send_event->crossing.send_event = TRUE;
9311   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9312   send_event->crossing.subwindow = NULL;
9313   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9314   send_event->crossing.time = GDK_CURRENT_TIME;
9315
9316   gtk_propagate_event (column->button, send_event);
9317   gdk_event_free (send_event);
9318
9319   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9320   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9321   send_event->button.send_event = TRUE;
9322   send_event->button.time = GDK_CURRENT_TIME;
9323   send_event->button.x = -1;
9324   send_event->button.y = -1;
9325   send_event->button.axes = NULL;
9326   send_event->button.state = 0;
9327   send_event->button.button = 1;
9328   send_event->button.device = gdk_display_get_core_pointer (display);
9329   send_event->button.x_root = 0;
9330   send_event->button.y_root = 0;
9331
9332   gtk_propagate_event (column->button, send_event);
9333   gdk_event_free (send_event);
9334
9335   /* Kids, don't try this at home */
9336   g_object_ref (column->button);
9337   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9338   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9339   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9340   g_object_unref (column->button);
9341
9342   tree_view->priv->drag_column_x = column->button->allocation.x;
9343   allocation = column->button->allocation;
9344   allocation.x = 0;
9345   gtk_widget_size_allocate (column->button, &allocation);
9346   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9347
9348   tree_view->priv->drag_column = column;
9349   gdk_window_show (tree_view->priv->drag_window);
9350
9351   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9352   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9353
9354   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9355   while (gtk_events_pending ())
9356     gtk_main_iteration ();
9357
9358   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9359   gdk_pointer_grab (tree_view->priv->drag_window,
9360                     FALSE,
9361                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9362                     NULL, NULL, GDK_CURRENT_TIME);
9363   gdk_keyboard_grab (tree_view->priv->drag_window,
9364                      FALSE,
9365                      GDK_CURRENT_TIME);
9366 }
9367
9368 static void
9369 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9370                                 GtkRBTree          *tree,
9371                                 GtkRBNode          *node,
9372                                 const GdkRectangle *clip_rect)
9373 {
9374   GdkRectangle rect;
9375
9376   if (!GTK_WIDGET_REALIZED (tree_view))
9377     return;
9378
9379   rect.x = 0;
9380   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9381
9382   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9383   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9384
9385   if (clip_rect)
9386     {
9387       GdkRectangle new_rect;
9388
9389       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9390
9391       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9392     }
9393   else
9394     {
9395       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9396     }
9397 }
9398
9399 void
9400 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9401                                 GtkRBTree          *tree,
9402                                 GtkRBNode          *node,
9403                                 const GdkRectangle *clip_rect)
9404 {
9405   GdkRectangle rect;
9406
9407   if (!GTK_WIDGET_REALIZED (tree_view))
9408     return;
9409
9410   rect.x = 0;
9411   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9412
9413   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9414   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9415
9416   if (clip_rect)
9417     {
9418       GdkRectangle new_rect;
9419
9420       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9421
9422       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9423     }
9424   else
9425     {
9426       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9427     }
9428 }
9429
9430 static void
9431 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9432                                GtkTreePath        *path,
9433                                const GdkRectangle *clip_rect)
9434 {
9435   GtkRBTree *tree = NULL;
9436   GtkRBNode *node = NULL;
9437
9438   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9439
9440   if (tree)
9441     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9442 }
9443
9444 /* x and y are the mouse position
9445  */
9446 static void
9447 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9448                           GtkRBTree   *tree,
9449                           GtkRBNode   *node,
9450                           /* in bin_window coordinates */
9451                           gint         x,
9452                           gint         y)
9453 {
9454   GdkRectangle area;
9455   GtkStateType state;
9456   GtkWidget *widget;
9457   gint x_offset = 0;
9458   gint x2;
9459   gint vertical_separator;
9460   gint expander_size;
9461   GtkExpanderStyle expander_style;
9462
9463   gtk_widget_style_get (GTK_WIDGET (tree_view),
9464                         "vertical-separator", &vertical_separator,
9465                         NULL);
9466   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9467
9468   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9469     return;
9470
9471   widget = GTK_WIDGET (tree_view);
9472
9473   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9474
9475   area.x = x_offset;
9476   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9477   area.width = expander_size + 2;
9478   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9479
9480   if (GTK_WIDGET_STATE (tree_view) == GTK_STATE_INSENSITIVE)
9481     {
9482       state = GTK_STATE_INSENSITIVE;
9483     }
9484   else if (node == tree_view->priv->button_pressed_node)
9485     {
9486       if (x >= area.x && x <= (area.x + area.width) &&
9487           y >= area.y && y <= (area.y + area.height))
9488         state = GTK_STATE_ACTIVE;
9489       else
9490         state = GTK_STATE_NORMAL;
9491     }
9492   else
9493     {
9494       if (node == tree_view->priv->prelight_node &&
9495           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9496         state = GTK_STATE_PRELIGHT;
9497       else
9498         state = GTK_STATE_NORMAL;
9499     }
9500
9501   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9502     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9503   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9504     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9505   else if (node->children != NULL)
9506     expander_style = GTK_EXPANDER_EXPANDED;
9507   else
9508     expander_style = GTK_EXPANDER_COLLAPSED;
9509
9510   gtk_paint_expander (widget->style,
9511                       tree_view->priv->bin_window,
9512                       state,
9513                       &area,
9514                       widget,
9515                       "treeview",
9516                       area.x + area.width / 2,
9517                       area.y + area.height / 2,
9518                       expander_style);
9519 }
9520
9521 static void
9522 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9523
9524 {
9525   GtkTreePath *cursor_path;
9526
9527   if ((tree_view->priv->tree == NULL) ||
9528       (! GTK_WIDGET_REALIZED (tree_view)))
9529     return;
9530
9531   cursor_path = NULL;
9532   if (tree_view->priv->cursor)
9533     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9534
9535   if (cursor_path == NULL)
9536     {
9537       /* Consult the selection before defaulting to the
9538        * first focusable element
9539        */
9540       GList *selected_rows;
9541       GtkTreeModel *model;
9542       GtkTreeSelection *selection;
9543
9544       selection = gtk_tree_view_get_selection (tree_view);
9545       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9546
9547       if (selected_rows)
9548         {
9549           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9550           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9551           g_list_free (selected_rows);
9552         }
9553       else
9554         {
9555           cursor_path = gtk_tree_path_new_first ();
9556           search_first_focusable_path (tree_view, &cursor_path,
9557                                        TRUE, NULL, NULL);
9558         }
9559
9560       gtk_tree_row_reference_free (tree_view->priv->cursor);
9561       tree_view->priv->cursor = NULL;
9562
9563       if (cursor_path)
9564         {
9565           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9566             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9567           else
9568             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9569         }
9570     }
9571
9572   if (cursor_path)
9573     {
9574       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9575
9576       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9577       gtk_tree_path_free (cursor_path);
9578
9579       if (tree_view->priv->focus_column == NULL)
9580         {
9581           GList *list;
9582           for (list = tree_view->priv->columns; list; list = list->next)
9583             {
9584               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9585                 {
9586                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9587                   break;
9588                 }
9589             }
9590         }
9591     }
9592 }
9593
9594 static void
9595 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9596                                    gint         count)
9597 {
9598   gint selection_count;
9599   GtkRBTree *cursor_tree = NULL;
9600   GtkRBNode *cursor_node = NULL;
9601   GtkRBTree *new_cursor_tree = NULL;
9602   GtkRBNode *new_cursor_node = NULL;
9603   GtkTreePath *cursor_path = NULL;
9604   gboolean grab_focus = TRUE;
9605   gboolean selectable;
9606
9607   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9608     return;
9609
9610   cursor_path = NULL;
9611   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9612     /* FIXME: we lost the cursor; should we get the first? */
9613     return;
9614
9615   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9616   _gtk_tree_view_find_node (tree_view, cursor_path,
9617                             &cursor_tree, &cursor_node);
9618
9619   if (cursor_tree == NULL)
9620     /* FIXME: we lost the cursor; should we get the first? */
9621     return;
9622
9623   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9624   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9625                                                       cursor_node,
9626                                                       cursor_path);
9627
9628   if (selection_count == 0
9629       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9630       && !tree_view->priv->ctrl_pressed
9631       && selectable)
9632     {
9633       /* Don't move the cursor, but just select the current node */
9634       new_cursor_tree = cursor_tree;
9635       new_cursor_node = cursor_node;
9636     }
9637   else
9638     {
9639       if (count == -1)
9640         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9641                                &new_cursor_tree, &new_cursor_node);
9642       else
9643         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9644                                &new_cursor_tree, &new_cursor_node);
9645     }
9646
9647   gtk_tree_path_free (cursor_path);
9648
9649   if (new_cursor_node)
9650     {
9651       cursor_path = _gtk_tree_view_find_path (tree_view,
9652                                               new_cursor_tree, new_cursor_node);
9653
9654       search_first_focusable_path (tree_view, &cursor_path,
9655                                    (count != -1),
9656                                    &new_cursor_tree,
9657                                    &new_cursor_node);
9658
9659       if (cursor_path)
9660         gtk_tree_path_free (cursor_path);
9661     }
9662
9663   /*
9664    * If the list has only one item and multi-selection is set then select
9665    * the row (if not yet selected).
9666    */
9667   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9668       new_cursor_node == NULL)
9669     {
9670       if (count == -1)
9671         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9672                                &new_cursor_tree, &new_cursor_node);
9673       else
9674         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9675                                &new_cursor_tree, &new_cursor_node);
9676
9677       if (new_cursor_node == NULL
9678           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9679         {
9680           new_cursor_node = cursor_node;
9681           new_cursor_tree = cursor_tree;
9682         }
9683       else
9684         {
9685           new_cursor_node = NULL;
9686         }
9687     }
9688
9689   if (new_cursor_node)
9690     {
9691       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9692       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9693       gtk_tree_path_free (cursor_path);
9694     }
9695   else
9696     {
9697       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9698
9699       if (!tree_view->priv->shift_pressed)
9700         {
9701           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9702                                           count < 0 ?
9703                                           GTK_DIR_UP : GTK_DIR_DOWN))
9704             {
9705               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9706
9707               if (toplevel)
9708                 gtk_widget_child_focus (toplevel,
9709                                         count < 0 ?
9710                                         GTK_DIR_TAB_BACKWARD :
9711                                         GTK_DIR_TAB_FORWARD);
9712
9713               grab_focus = FALSE;
9714             }
9715         }
9716       else
9717         {
9718           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9719         }
9720     }
9721
9722   if (grab_focus)
9723     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9724 }
9725
9726 static void
9727 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9728                                         gint         count)
9729 {
9730   GtkRBTree *cursor_tree = NULL;
9731   GtkRBNode *cursor_node = NULL;
9732   GtkTreePath *old_cursor_path = NULL;
9733   GtkTreePath *cursor_path = NULL;
9734   GtkRBTree *start_cursor_tree = NULL;
9735   GtkRBNode *start_cursor_node = NULL;
9736   gint y;
9737   gint window_y;
9738   gint vertical_separator;
9739
9740   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9741     return;
9742
9743   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9744     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9745   else
9746     /* This is sorta weird.  Focus in should give us a cursor */
9747     return;
9748
9749   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9750   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9751                             &cursor_tree, &cursor_node);
9752
9753   if (cursor_tree == NULL)
9754     {
9755       /* FIXME: we lost the cursor.  Should we try to get one? */
9756       gtk_tree_path_free (old_cursor_path);
9757       return;
9758     }
9759   g_return_if_fail (cursor_node != NULL);
9760
9761   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9762   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9763   y += tree_view->priv->cursor_offset;
9764   y += count * (int)tree_view->priv->vadjustment->page_increment;
9765   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9766
9767   if (y >= tree_view->priv->height)
9768     y = tree_view->priv->height - 1;
9769
9770   tree_view->priv->cursor_offset =
9771     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9772                              &cursor_tree, &cursor_node);
9773
9774   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9775     {
9776       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9777                              &cursor_tree, &cursor_node);
9778       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9779     }
9780
9781   y -= tree_view->priv->cursor_offset;
9782   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9783
9784   start_cursor_tree = cursor_tree;
9785   start_cursor_node = cursor_node;
9786
9787   if (! search_first_focusable_path (tree_view, &cursor_path,
9788                                      (count != -1),
9789                                      &cursor_tree, &cursor_node))
9790     {
9791       /* It looks like we reached the end of the view without finding
9792        * a focusable row.  We will step backwards to find the last
9793        * focusable row.
9794        */
9795       cursor_tree = start_cursor_tree;
9796       cursor_node = start_cursor_node;
9797       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9798
9799       search_first_focusable_path (tree_view, &cursor_path,
9800                                    (count == -1),
9801                                    &cursor_tree, &cursor_node);
9802     }
9803
9804   if (!cursor_path)
9805     goto cleanup;
9806
9807   /* update y */
9808   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9809
9810   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9811
9812   y -= window_y;
9813   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9814   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9815   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9816
9817   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9818     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9819
9820   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9821
9822 cleanup:
9823   gtk_tree_path_free (old_cursor_path);
9824   gtk_tree_path_free (cursor_path);
9825 }
9826
9827 static void
9828 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9829                                       gint         count)
9830 {
9831   GtkRBTree *cursor_tree = NULL;
9832   GtkRBNode *cursor_node = NULL;
9833   GtkTreePath *cursor_path = NULL;
9834   GtkTreeViewColumn *column;
9835   GtkTreeIter iter;
9836   GList *list;
9837   gboolean found_column = FALSE;
9838   gboolean rtl;
9839
9840   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9841
9842   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9843     return;
9844
9845   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9846     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9847   else
9848     return;
9849
9850   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9851   if (cursor_tree == NULL)
9852     return;
9853   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9854     {
9855       gtk_tree_path_free (cursor_path);
9856       return;
9857     }
9858   gtk_tree_path_free (cursor_path);
9859
9860   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9861   if (tree_view->priv->focus_column)
9862     {
9863       for (; list; list = (rtl ? list->prev : list->next))
9864         {
9865           if (list->data == tree_view->priv->focus_column)
9866             break;
9867         }
9868     }
9869
9870   while (list)
9871     {
9872       gboolean left, right;
9873
9874       column = list->data;
9875       if (column->visible == FALSE)
9876         goto loop_end;
9877
9878       gtk_tree_view_column_cell_set_cell_data (column,
9879                                                tree_view->priv->model,
9880                                                &iter,
9881                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9882                                                cursor_node->children?TRUE:FALSE);
9883
9884       if (rtl)
9885         {
9886           right = list->prev ? TRUE : FALSE;
9887           left = list->next ? TRUE : FALSE;
9888         }
9889       else
9890         {
9891           left = list->prev ? TRUE : FALSE;
9892           right = list->next ? TRUE : FALSE;
9893         }
9894
9895       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9896         {
9897           tree_view->priv->focus_column = column;
9898           found_column = TRUE;
9899           break;
9900         }
9901     loop_end:
9902       if (count == 1)
9903         list = rtl ? list->prev : list->next;
9904       else
9905         list = rtl ? list->next : list->prev;
9906     }
9907
9908   if (found_column)
9909     {
9910       if (!gtk_tree_view_has_special_cell (tree_view))
9911         _gtk_tree_view_queue_draw_node (tree_view,
9912                                         cursor_tree,
9913                                         cursor_node,
9914                                         NULL);
9915       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9916       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9917     }
9918   else
9919     {
9920       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9921     }
9922
9923   gtk_tree_view_clamp_column_visible (tree_view,
9924                                       tree_view->priv->focus_column, TRUE);
9925 }
9926
9927 static void
9928 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9929                                      gint         count)
9930 {
9931   GtkRBTree *cursor_tree;
9932   GtkRBNode *cursor_node;
9933   GtkTreePath *path;
9934   GtkTreePath *old_path;
9935
9936   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9937     return;
9938
9939   g_return_if_fail (tree_view->priv->tree != NULL);
9940
9941   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9942
9943   cursor_tree = tree_view->priv->tree;
9944   cursor_node = cursor_tree->root;
9945
9946   if (count == -1)
9947     {
9948       while (cursor_node && cursor_node->left != cursor_tree->nil)
9949         cursor_node = cursor_node->left;
9950
9951       /* Now go forward to find the first focusable row. */
9952       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9953       search_first_focusable_path (tree_view, &path,
9954                                    TRUE, &cursor_tree, &cursor_node);
9955     }
9956   else
9957     {
9958       do
9959         {
9960           while (cursor_node && cursor_node->right != cursor_tree->nil)
9961             cursor_node = cursor_node->right;
9962           if (cursor_node->children == NULL)
9963             break;
9964
9965           cursor_tree = cursor_node->children;
9966           cursor_node = cursor_tree->root;
9967         }
9968       while (1);
9969
9970       /* Now go backwards to find last focusable row. */
9971       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9972       search_first_focusable_path (tree_view, &path,
9973                                    FALSE, &cursor_tree, &cursor_node);
9974     }
9975
9976   if (!path)
9977     goto cleanup;
9978
9979   if (gtk_tree_path_compare (old_path, path))
9980     {
9981       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9982       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9983     }
9984   else
9985     {
9986       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9987     }
9988
9989 cleanup:
9990   gtk_tree_path_free (old_path);
9991   gtk_tree_path_free (path);
9992 }
9993
9994 static gboolean
9995 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
9996 {
9997   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9998     return FALSE;
9999
10000   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10001     return FALSE;
10002
10003   gtk_tree_selection_select_all (tree_view->priv->selection);
10004
10005   return TRUE;
10006 }
10007
10008 static gboolean
10009 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10010 {
10011   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10012     return FALSE;
10013
10014   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10015     return FALSE;
10016
10017   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10018
10019   return TRUE;
10020 }
10021
10022 static gboolean
10023 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10024                                       gboolean     start_editing)
10025 {
10026   GtkRBTree *new_tree = NULL;
10027   GtkRBNode *new_node = NULL;
10028   GtkRBTree *cursor_tree = NULL;
10029   GtkRBNode *cursor_node = NULL;
10030   GtkTreePath *cursor_path = NULL;
10031   GtkTreeSelectMode mode = 0;
10032
10033   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10034     return FALSE;
10035
10036   if (tree_view->priv->cursor)
10037     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10038
10039   if (cursor_path == NULL)
10040     return FALSE;
10041
10042   _gtk_tree_view_find_node (tree_view, cursor_path,
10043                             &cursor_tree, &cursor_node);
10044
10045   if (cursor_tree == NULL)
10046     {
10047       gtk_tree_path_free (cursor_path);
10048       return FALSE;
10049     }
10050
10051   if (!tree_view->priv->shift_pressed && start_editing &&
10052       tree_view->priv->focus_column)
10053     {
10054       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10055         {
10056           gtk_tree_path_free (cursor_path);
10057           return TRUE;
10058         }
10059     }
10060
10061   if (tree_view->priv->ctrl_pressed)
10062     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10063   if (tree_view->priv->shift_pressed)
10064     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10065
10066   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10067                                             cursor_node,
10068                                             cursor_tree,
10069                                             cursor_path,
10070                                             mode,
10071                                             FALSE);
10072
10073   /* We bail out if the original (tree, node) don't exist anymore after
10074    * handling the selection-changed callback.  We do return TRUE because
10075    * the key press has been handled at this point.
10076    */
10077   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10078
10079   if (cursor_tree != new_tree || cursor_node != new_node)
10080     return FALSE;
10081
10082   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10083
10084   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10085   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10086
10087   if (!tree_view->priv->shift_pressed)
10088     gtk_tree_view_row_activated (tree_view, cursor_path,
10089                                  tree_view->priv->focus_column);
10090
10091   gtk_tree_path_free (cursor_path);
10092
10093   return TRUE;
10094 }
10095
10096 static gboolean
10097 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10098 {
10099   GtkRBTree *new_tree = NULL;
10100   GtkRBNode *new_node = NULL;
10101   GtkRBTree *cursor_tree = NULL;
10102   GtkRBNode *cursor_node = NULL;
10103   GtkTreePath *cursor_path = NULL;
10104
10105   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10106     return FALSE;
10107
10108   cursor_path = NULL;
10109   if (tree_view->priv->cursor)
10110     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10111
10112   if (cursor_path == NULL)
10113     return FALSE;
10114
10115   _gtk_tree_view_find_node (tree_view, cursor_path,
10116                             &cursor_tree, &cursor_node);
10117   if (cursor_tree == NULL)
10118     {
10119       gtk_tree_path_free (cursor_path);
10120       return FALSE;
10121     }
10122
10123   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10124                                             cursor_node,
10125                                             cursor_tree,
10126                                             cursor_path,
10127                                             GTK_TREE_SELECT_MODE_TOGGLE,
10128                                             FALSE);
10129
10130   /* We bail out if the original (tree, node) don't exist anymore after
10131    * handling the selection-changed callback.  We do return TRUE because
10132    * the key press has been handled at this point.
10133    */
10134   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10135
10136   if (cursor_tree != new_tree || cursor_node != new_node)
10137     return FALSE;
10138
10139   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10140
10141   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10142   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10143   gtk_tree_path_free (cursor_path);
10144
10145   return TRUE;
10146 }
10147
10148 static gboolean
10149 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10150                                                gboolean     logical,
10151                                                gboolean     expand,
10152                                                gboolean     open_all)
10153 {
10154   GtkTreePath *cursor_path = NULL;
10155   GtkRBTree *tree;
10156   GtkRBNode *node;
10157
10158   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10159     return FALSE;
10160
10161   cursor_path = NULL;
10162   if (tree_view->priv->cursor)
10163     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10164
10165   if (cursor_path == NULL)
10166     return FALSE;
10167
10168   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10169     return FALSE;
10170
10171   /* Don't handle the event if we aren't an expander */
10172   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10173     return FALSE;
10174
10175   if (!logical
10176       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10177     expand = !expand;
10178
10179   if (expand)
10180     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10181   else
10182     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10183
10184   gtk_tree_path_free (cursor_path);
10185
10186   return TRUE;
10187 }
10188
10189 static gboolean
10190 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10191 {
10192   GtkRBTree *cursor_tree = NULL;
10193   GtkRBNode *cursor_node = NULL;
10194   GtkTreePath *cursor_path = NULL;
10195   GdkModifierType state;
10196
10197   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10198     goto out;
10199
10200   cursor_path = NULL;
10201   if (tree_view->priv->cursor)
10202     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10203
10204   if (cursor_path == NULL)
10205     goto out;
10206
10207   _gtk_tree_view_find_node (tree_view, cursor_path,
10208                             &cursor_tree, &cursor_node);
10209   if (cursor_tree == NULL)
10210     {
10211       gtk_tree_path_free (cursor_path);
10212       goto out;
10213     }
10214
10215   if (cursor_tree->parent_node)
10216     {
10217       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10218       cursor_node = cursor_tree->parent_node;
10219       cursor_tree = cursor_tree->parent_tree;
10220
10221       gtk_tree_path_up (cursor_path);
10222
10223       if (gtk_get_current_event_state (&state))
10224         {
10225           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10226             tree_view->priv->ctrl_pressed = TRUE;
10227         }
10228
10229       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10230       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10231
10232       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10233       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10234       gtk_tree_path_free (cursor_path);
10235
10236       tree_view->priv->ctrl_pressed = FALSE;
10237
10238       return TRUE;
10239     }
10240
10241  out:
10242
10243   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10244   return FALSE;
10245 }
10246
10247 static gboolean
10248 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10249 {
10250   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
10251   tree_view->priv->typeselect_flush_timeout = 0;
10252
10253   return FALSE;
10254 }
10255
10256 /* Cut and paste from gtkwindow.c */
10257 static void
10258 send_focus_change (GtkWidget *widget,
10259                    gboolean   in)
10260 {
10261   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10262
10263   g_object_ref (widget);
10264
10265  if (in)
10266     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
10267   else
10268     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
10269
10270   fevent->focus_change.type = GDK_FOCUS_CHANGE;
10271   fevent->focus_change.window = g_object_ref (widget->window);
10272   fevent->focus_change.in = in;
10273
10274   gtk_widget_event (widget, fevent);
10275
10276   g_object_notify (G_OBJECT (widget), "has-focus");
10277
10278   g_object_unref (widget);
10279   gdk_event_free (fevent);
10280 }
10281
10282 static void
10283 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10284 {
10285   GtkWidget *frame, *vbox, *toplevel;
10286   GdkScreen *screen;
10287
10288   if (tree_view->priv->search_custom_entry_set)
10289     return;
10290
10291   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10292   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10293
10294    if (tree_view->priv->search_window != NULL)
10295      {
10296        if (GTK_WINDOW (toplevel)->group)
10297          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10298                                       GTK_WINDOW (tree_view->priv->search_window));
10299        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10300          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10301                                          GTK_WINDOW (tree_view->priv->search_window));
10302        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10303        return;
10304      }
10305
10306   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10307   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10308
10309   if (GTK_WINDOW (toplevel)->group)
10310     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10311                                  GTK_WINDOW (tree_view->priv->search_window));
10312
10313   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10314                             GDK_WINDOW_TYPE_HINT_UTILITY);
10315   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10316   g_signal_connect (tree_view->priv->search_window, "delete-event",
10317                     G_CALLBACK (gtk_tree_view_search_delete_event),
10318                     tree_view);
10319   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10320                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10321                     tree_view);
10322   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10323                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10324                     tree_view);
10325   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10326                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10327                     tree_view);
10328
10329   frame = gtk_frame_new (NULL);
10330   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10331   gtk_widget_show (frame);
10332   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10333
10334   vbox = gtk_vbox_new (FALSE, 0);
10335   gtk_widget_show (vbox);
10336   gtk_container_add (GTK_CONTAINER (frame), vbox);
10337   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10338
10339   /* add entry */
10340   tree_view->priv->search_entry = gtk_entry_new ();
10341   gtk_widget_show (tree_view->priv->search_entry);
10342   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10343                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10344                     tree_view);
10345   g_signal_connect (tree_view->priv->search_entry,
10346                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10347                     tree_view);
10348   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10349                     "preedit-changed",
10350                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10351                     tree_view);
10352   gtk_container_add (GTK_CONTAINER (vbox),
10353                      tree_view->priv->search_entry);
10354
10355   gtk_widget_realize (tree_view->priv->search_entry);
10356 }
10357
10358 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10359  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10360  */
10361 static gboolean
10362 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10363                                              gboolean     keybinding)
10364 {
10365   /* We only start interactive search if we have focus or the columns
10366    * have focus.  If one of our children have focus, we don't want to
10367    * start the search.
10368    */
10369   GList *list;
10370   gboolean found_focus = FALSE;
10371   GtkWidgetClass *entry_parent_class;
10372
10373   if (!tree_view->priv->enable_search && !keybinding)
10374     return FALSE;
10375
10376   if (tree_view->priv->search_custom_entry_set)
10377     return FALSE;
10378
10379   if (tree_view->priv->search_window != NULL &&
10380       GTK_WIDGET_VISIBLE (tree_view->priv->search_window))
10381     return TRUE;
10382
10383   for (list = tree_view->priv->columns; list; list = list->next)
10384     {
10385       GtkTreeViewColumn *column;
10386
10387       column = list->data;
10388       if (! column->visible)
10389         continue;
10390
10391       if (GTK_WIDGET_HAS_FOCUS (column->button))
10392         {
10393           found_focus = TRUE;
10394           break;
10395         }
10396     }
10397
10398   if (GTK_WIDGET_HAS_FOCUS (tree_view))
10399     found_focus = TRUE;
10400
10401   if (!found_focus)
10402     return FALSE;
10403
10404   if (tree_view->priv->search_column < 0)
10405     return FALSE;
10406
10407   gtk_tree_view_ensure_interactive_directory (tree_view);
10408
10409   if (keybinding)
10410     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10411
10412   /* done, show it */
10413   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10414   gtk_widget_show (tree_view->priv->search_window);
10415   if (tree_view->priv->search_entry_changed_id == 0)
10416     {
10417       tree_view->priv->search_entry_changed_id =
10418         g_signal_connect (tree_view->priv->search_entry, "changed",
10419                           G_CALLBACK (gtk_tree_view_search_init),
10420                           tree_view);
10421     }
10422
10423   tree_view->priv->typeselect_flush_timeout =
10424     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10425                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10426                    tree_view);
10427
10428   /* Grab focus will select all the text.  We don't want that to happen, so we
10429    * call the parent instance and bypass the selection change.  This is probably
10430    * really non-kosher. */
10431   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10432   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10433
10434   /* send focus-in event */
10435   send_focus_change (tree_view->priv->search_entry, TRUE);
10436
10437   /* search first matching iter */
10438   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10439
10440   return TRUE;
10441 }
10442
10443 static gboolean
10444 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10445 {
10446   return gtk_tree_view_real_start_interactive_search (tree_view, TRUE);
10447 }
10448
10449 /* this function returns the new width of the column being resized given
10450  * the column and x position of the cursor; the x cursor position is passed
10451  * in as a pointer and automagicly corrected if it's beyond min/max limits
10452  */
10453 static gint
10454 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10455                                 gint       i,
10456                                 gint      *x)
10457 {
10458   GtkTreeViewColumn *column;
10459   gint width;
10460   gboolean rtl;
10461
10462   /* first translate the x position from widget->window
10463    * to clist->clist_window
10464    */
10465   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10466   column = g_list_nth (tree_view->priv->columns, i)->data;
10467   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10468
10469   /* Clamp down the value */
10470   if (column->min_width == -1)
10471     width = MAX (column->button->requisition.width,
10472                  width);
10473   else
10474     width = MAX (column->min_width,
10475                  width);
10476   if (column->max_width != -1)
10477     width = MIN (width, column->max_width);
10478
10479   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10480
10481   return width;
10482 }
10483
10484
10485 /* FIXME this adjust_allocation is a big cut-and-paste from
10486  * GtkCList, needs to be some "official" way to do this
10487  * factored out.
10488  */
10489 typedef struct
10490 {
10491   GdkWindow *window;
10492   int dx;
10493   int dy;
10494 } ScrollData;
10495
10496 /* The window to which widget->window is relative */
10497 #define ALLOCATION_WINDOW(widget)               \
10498    (GTK_WIDGET_NO_WINDOW (widget) ?             \
10499     (widget)->window :                          \
10500      gdk_window_get_parent ((widget)->window))
10501
10502 static void
10503 adjust_allocation_recurse (GtkWidget *widget,
10504                            gpointer   data)
10505 {
10506   ScrollData *scroll_data = data;
10507
10508   /* Need to really size allocate instead of just poking
10509    * into widget->allocation if the widget is not realized.
10510    * FIXME someone figure out why this was.
10511    */
10512   if (!GTK_WIDGET_REALIZED (widget))
10513     {
10514       if (GTK_WIDGET_VISIBLE (widget))
10515         {
10516           GdkRectangle tmp_rectangle = widget->allocation;
10517           tmp_rectangle.x += scroll_data->dx;
10518           tmp_rectangle.y += scroll_data->dy;
10519
10520           gtk_widget_size_allocate (widget, &tmp_rectangle);
10521         }
10522     }
10523   else
10524     {
10525       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10526         {
10527           widget->allocation.x += scroll_data->dx;
10528           widget->allocation.y += scroll_data->dy;
10529
10530           if (GTK_IS_CONTAINER (widget))
10531             gtk_container_forall (GTK_CONTAINER (widget),
10532                                   adjust_allocation_recurse,
10533                                   data);
10534         }
10535     }
10536 }
10537
10538 static void
10539 adjust_allocation (GtkWidget *widget,
10540                    int        dx,
10541                    int        dy)
10542 {
10543   ScrollData scroll_data;
10544
10545   if (GTK_WIDGET_REALIZED (widget))
10546     scroll_data.window = ALLOCATION_WINDOW (widget);
10547   else
10548     scroll_data.window = NULL;
10549
10550   scroll_data.dx = dx;
10551   scroll_data.dy = dy;
10552
10553   adjust_allocation_recurse (widget, &scroll_data);
10554 }
10555
10556 /* Callbacks */
10557 static void
10558 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10559                                   GtkTreeView   *tree_view)
10560 {
10561   if (GTK_WIDGET_REALIZED (tree_view))
10562     {
10563       gint dy;
10564
10565       gdk_window_move (tree_view->priv->bin_window,
10566                        - tree_view->priv->hadjustment->value,
10567                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10568       gdk_window_move (tree_view->priv->header_window,
10569                        - tree_view->priv->hadjustment->value,
10570                        0);
10571       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10572       if (dy)
10573         {
10574           if (tree_view->priv->tree)
10575             update_prelight (tree_view,
10576                              tree_view->priv->event_last_x,
10577                              tree_view->priv->event_last_y - dy);
10578
10579           if (tree_view->priv->edited_column &&
10580               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10581             {
10582               GList *list;
10583               GtkWidget *widget;
10584               GtkTreeViewChild *child = NULL;
10585
10586               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10587               adjust_allocation (widget, 0, dy);
10588
10589               for (list = tree_view->priv->children; list; list = list->next)
10590                 {
10591                   child = (GtkTreeViewChild *)list->data;
10592                   if (child->widget == widget)
10593                     {
10594                       child->y += dy;
10595                       break;
10596                     }
10597                 }
10598             }
10599         }
10600       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10601
10602       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10603         {
10604           /* update our dy and top_row */
10605           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10606
10607           if (!tree_view->priv->in_top_row_to_dy)
10608             gtk_tree_view_dy_to_top_row (tree_view);
10609         }
10610
10611       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10612       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10613     }
10614 }
10615
10616 \f
10617
10618 /* Public methods
10619  */
10620
10621 /**
10622  * gtk_tree_view_new:
10623  *
10624  * Creates a new #GtkTreeView widget.
10625  *
10626  * Return value: A newly created #GtkTreeView widget.
10627  **/
10628 GtkWidget *
10629 gtk_tree_view_new (void)
10630 {
10631   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10632 }
10633
10634 /**
10635  * gtk_tree_view_new_with_model:
10636  * @model: the model.
10637  *
10638  * Creates a new #GtkTreeView widget with the model initialized to @model.
10639  *
10640  * Return value: A newly created #GtkTreeView widget.
10641  **/
10642 GtkWidget *
10643 gtk_tree_view_new_with_model (GtkTreeModel *model)
10644 {
10645   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10646 }
10647
10648 /* Public Accessors
10649  */
10650
10651 /**
10652  * gtk_tree_view_get_model:
10653  * @tree_view: a #GtkTreeView
10654  *
10655  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10656  * model is unset.
10657  *
10658  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
10659  **/
10660 GtkTreeModel *
10661 gtk_tree_view_get_model (GtkTreeView *tree_view)
10662 {
10663   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10664
10665   return tree_view->priv->model;
10666 }
10667
10668 /**
10669  * gtk_tree_view_set_model:
10670  * @tree_view: A #GtkTreeNode.
10671  * @model: (allow-none): The model.
10672  *
10673  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10674  * set, it will remove it before setting the new model.  If @model is %NULL,
10675  * then it will unset the old model.
10676  **/
10677 void
10678 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10679                          GtkTreeModel *model)
10680 {
10681   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10682   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10683
10684   if (model == tree_view->priv->model)
10685     return;
10686
10687   if (tree_view->priv->scroll_to_path)
10688     {
10689       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10690       tree_view->priv->scroll_to_path = NULL;
10691     }
10692
10693   if (tree_view->priv->model)
10694     {
10695       GList *tmplist = tree_view->priv->columns;
10696
10697       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10698       gtk_tree_view_stop_editing (tree_view, TRUE);
10699
10700       remove_expand_collapse_timeout (tree_view);
10701
10702       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10703                                             gtk_tree_view_row_changed,
10704                                             tree_view);
10705       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10706                                             gtk_tree_view_row_inserted,
10707                                             tree_view);
10708       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10709                                             gtk_tree_view_row_has_child_toggled,
10710                                             tree_view);
10711       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10712                                             gtk_tree_view_row_deleted,
10713                                             tree_view);
10714       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10715                                             gtk_tree_view_rows_reordered,
10716                                             tree_view);
10717
10718       for (; tmplist; tmplist = tmplist->next)
10719         _gtk_tree_view_column_unset_model (tmplist->data,
10720                                            tree_view->priv->model);
10721
10722       if (tree_view->priv->tree)
10723         gtk_tree_view_free_rbtree (tree_view);
10724
10725       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10726       tree_view->priv->drag_dest_row = NULL;
10727       gtk_tree_row_reference_free (tree_view->priv->cursor);
10728       tree_view->priv->cursor = NULL;
10729       gtk_tree_row_reference_free (tree_view->priv->anchor);
10730       tree_view->priv->anchor = NULL;
10731       gtk_tree_row_reference_free (tree_view->priv->top_row);
10732       tree_view->priv->top_row = NULL;
10733       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10734       tree_view->priv->scroll_to_path = NULL;
10735
10736       tree_view->priv->scroll_to_column = NULL;
10737
10738       g_object_unref (tree_view->priv->model);
10739
10740       tree_view->priv->search_column = -1;
10741       tree_view->priv->fixed_height_check = 0;
10742       tree_view->priv->fixed_height = -1;
10743       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10744       tree_view->priv->last_button_x = -1;
10745       tree_view->priv->last_button_y = -1;
10746     }
10747
10748   tree_view->priv->model = model;
10749
10750   if (tree_view->priv->model)
10751     {
10752       gint i;
10753       GtkTreePath *path;
10754       GtkTreeIter iter;
10755       GtkTreeModelFlags flags;
10756
10757       if (tree_view->priv->search_column == -1)
10758         {
10759           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10760             {
10761               GType type = gtk_tree_model_get_column_type (model, i);
10762
10763               if (g_value_type_transformable (type, G_TYPE_STRING))
10764                 {
10765                   tree_view->priv->search_column = i;
10766                   break;
10767                 }
10768             }
10769         }
10770
10771       g_object_ref (tree_view->priv->model);
10772       g_signal_connect (tree_view->priv->model,
10773                         "row-changed",
10774                         G_CALLBACK (gtk_tree_view_row_changed),
10775                         tree_view);
10776       g_signal_connect (tree_view->priv->model,
10777                         "row-inserted",
10778                         G_CALLBACK (gtk_tree_view_row_inserted),
10779                         tree_view);
10780       g_signal_connect (tree_view->priv->model,
10781                         "row-has-child-toggled",
10782                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10783                         tree_view);
10784       g_signal_connect (tree_view->priv->model,
10785                         "row-deleted",
10786                         G_CALLBACK (gtk_tree_view_row_deleted),
10787                         tree_view);
10788       g_signal_connect (tree_view->priv->model,
10789                         "rows-reordered",
10790                         G_CALLBACK (gtk_tree_view_rows_reordered),
10791                         tree_view);
10792
10793       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10794       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10795         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10796       else
10797         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10798
10799       path = gtk_tree_path_new_first ();
10800       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10801         {
10802           tree_view->priv->tree = _gtk_rbtree_new ();
10803           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10804         }
10805       gtk_tree_path_free (path);
10806
10807       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10808       install_presize_handler (tree_view);
10809     }
10810
10811   g_object_notify (G_OBJECT (tree_view), "model");
10812
10813   if (tree_view->priv->selection)
10814   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10815
10816   if (GTK_WIDGET_REALIZED (tree_view))
10817     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10818 }
10819
10820 /**
10821  * gtk_tree_view_get_selection:
10822  * @tree_view: A #GtkTreeView.
10823  *
10824  * Gets the #GtkTreeSelection associated with @tree_view.
10825  *
10826  * Return value: A #GtkTreeSelection object.
10827  **/
10828 GtkTreeSelection *
10829 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10830 {
10831   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10832
10833   return tree_view->priv->selection;
10834 }
10835
10836 /**
10837  * gtk_tree_view_get_hadjustment:
10838  * @tree_view: A #GtkTreeView
10839  *
10840  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10841  *
10842  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10843  * used.
10844  **/
10845 GtkAdjustment *
10846 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10847 {
10848   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10849
10850   if (tree_view->priv->hadjustment == NULL)
10851     gtk_tree_view_set_hadjustment (tree_view, NULL);
10852
10853   return tree_view->priv->hadjustment;
10854 }
10855
10856 /**
10857  * gtk_tree_view_set_hadjustment:
10858  * @tree_view: A #GtkTreeView
10859  * @adjustment: The #GtkAdjustment to set, or %NULL
10860  *
10861  * Sets the #GtkAdjustment for the current horizontal aspect.
10862  **/
10863 void
10864 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10865                                GtkAdjustment *adjustment)
10866 {
10867   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10868
10869   gtk_tree_view_set_adjustments (tree_view,
10870                                  adjustment,
10871                                  tree_view->priv->vadjustment);
10872
10873   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10874 }
10875
10876 /**
10877  * gtk_tree_view_get_vadjustment:
10878  * @tree_view: A #GtkTreeView
10879  *
10880  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10881  *
10882  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10883  * used.
10884  **/
10885 GtkAdjustment *
10886 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10887 {
10888   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10889
10890   if (tree_view->priv->vadjustment == NULL)
10891     gtk_tree_view_set_vadjustment (tree_view, NULL);
10892
10893   return tree_view->priv->vadjustment;
10894 }
10895
10896 /**
10897  * gtk_tree_view_set_vadjustment:
10898  * @tree_view: A #GtkTreeView
10899  * @adjustment: The #GtkAdjustment to set, or %NULL
10900  *
10901  * Sets the #GtkAdjustment for the current vertical aspect.
10902  **/
10903 void
10904 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10905                                GtkAdjustment *adjustment)
10906 {
10907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10908
10909   gtk_tree_view_set_adjustments (tree_view,
10910                                  tree_view->priv->hadjustment,
10911                                  adjustment);
10912
10913   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10914 }
10915
10916 /* Column and header operations */
10917
10918 /**
10919  * gtk_tree_view_get_headers_visible:
10920  * @tree_view: A #GtkTreeView.
10921  *
10922  * Returns %TRUE if the headers on the @tree_view are visible.
10923  *
10924  * Return value: Whether the headers are visible or not.
10925  **/
10926 gboolean
10927 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10928 {
10929   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10930
10931   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10932 }
10933
10934 /**
10935  * gtk_tree_view_set_headers_visible:
10936  * @tree_view: A #GtkTreeView.
10937  * @headers_visible: %TRUE if the headers are visible
10938  *
10939  * Sets the visibility state of the headers.
10940  **/
10941 void
10942 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10943                                    gboolean     headers_visible)
10944 {
10945   gint x, y;
10946   GList *list;
10947   GtkTreeViewColumn *column;
10948
10949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10950
10951   headers_visible = !! headers_visible;
10952
10953   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10954     return;
10955
10956   if (headers_visible)
10957     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10958   else
10959     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10960
10961   if (GTK_WIDGET_REALIZED (tree_view))
10962     {
10963       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
10964       if (headers_visible)
10965         {
10966           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
10967
10968           if (GTK_WIDGET_MAPPED (tree_view))
10969             gtk_tree_view_map_buttons (tree_view);
10970         }
10971       else
10972         {
10973           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
10974
10975           for (list = tree_view->priv->columns; list; list = list->next)
10976             {
10977               column = list->data;
10978               gtk_widget_unmap (column->button);
10979             }
10980           gdk_window_hide (tree_view->priv->header_window);
10981         }
10982     }
10983
10984   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
10985   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
10986   tree_view->priv->vadjustment->lower = 0;
10987   tree_view->priv->vadjustment->upper = tree_view->priv->height;
10988   gtk_adjustment_changed (tree_view->priv->vadjustment);
10989
10990   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10991
10992   g_object_notify (G_OBJECT (tree_view), "headers-visible");
10993 }
10994
10995 /**
10996  * gtk_tree_view_columns_autosize:
10997  * @tree_view: A #GtkTreeView.
10998  *
10999  * Resizes all columns to their optimal width. Only works after the
11000  * treeview has been realized.
11001  **/
11002 void
11003 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11004 {
11005   gboolean dirty = FALSE;
11006   GList *list;
11007   GtkTreeViewColumn *column;
11008
11009   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11010
11011   for (list = tree_view->priv->columns; list; list = list->next)
11012     {
11013       column = list->data;
11014       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11015         continue;
11016       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11017       dirty = TRUE;
11018     }
11019
11020   if (dirty)
11021     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11022 }
11023
11024 /**
11025  * gtk_tree_view_set_headers_clickable:
11026  * @tree_view: A #GtkTreeView.
11027  * @setting: %TRUE if the columns are clickable.
11028  *
11029  * Allow the column title buttons to be clicked.
11030  **/
11031 void
11032 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11033                                      gboolean   setting)
11034 {
11035   GList *list;
11036
11037   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11038
11039   for (list = tree_view->priv->columns; list; list = list->next)
11040     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11041
11042   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11043 }
11044
11045
11046 /**
11047  * gtk_tree_view_get_headers_clickable:
11048  * @tree_view: A #GtkTreeView.
11049  *
11050  * Returns whether all header columns are clickable.
11051  *
11052  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11053  *
11054  * Since: 2.10
11055  **/
11056 gboolean
11057 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11058 {
11059   GList *list;
11060
11061   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11062
11063   for (list = tree_view->priv->columns; list; list = list->next)
11064     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11065       return FALSE;
11066
11067   return TRUE;
11068 }
11069
11070 /**
11071  * gtk_tree_view_set_rules_hint
11072  * @tree_view: a #GtkTreeView
11073  * @setting: %TRUE if the tree requires reading across rows
11074  *
11075  * This function tells GTK+ that the user interface for your
11076  * application requires users to read across tree rows and associate
11077  * cells with one another. By default, GTK+ will then render the tree
11078  * with alternating row colors. Do <emphasis>not</emphasis> use it
11079  * just because you prefer the appearance of the ruled tree; that's a
11080  * question for the theme. Some themes will draw tree rows in
11081  * alternating colors even when rules are turned off, and users who
11082  * prefer that appearance all the time can choose those themes. You
11083  * should call this function only as a <emphasis>semantic</emphasis>
11084  * hint to the theme engine that your tree makes alternating colors
11085  * useful from a functional standpoint (since it has lots of columns,
11086  * generally).
11087  *
11088  **/
11089 void
11090 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11091                               gboolean      setting)
11092 {
11093   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11094
11095   setting = setting != FALSE;
11096
11097   if (tree_view->priv->has_rules != setting)
11098     {
11099       tree_view->priv->has_rules = setting;
11100       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11101     }
11102
11103   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11104 }
11105
11106 /**
11107  * gtk_tree_view_get_rules_hint
11108  * @tree_view: a #GtkTreeView
11109  *
11110  * Gets the setting set by gtk_tree_view_set_rules_hint().
11111  *
11112  * Return value: %TRUE if rules are useful for the user of this tree
11113  **/
11114 gboolean
11115 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11116 {
11117   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11118
11119   return tree_view->priv->has_rules;
11120 }
11121
11122 /* Public Column functions
11123  */
11124
11125 /**
11126  * gtk_tree_view_append_column:
11127  * @tree_view: A #GtkTreeView.
11128  * @column: The #GtkTreeViewColumn to add.
11129  *
11130  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11131  * mode enabled, then @column must have its "sizing" property set to be
11132  * GTK_TREE_VIEW_COLUMN_FIXED.
11133  *
11134  * Return value: The number of columns in @tree_view after appending.
11135  **/
11136 gint
11137 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11138                              GtkTreeViewColumn *column)
11139 {
11140   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11141   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11142   g_return_val_if_fail (column->tree_view == NULL, -1);
11143
11144   return gtk_tree_view_insert_column (tree_view, column, -1);
11145 }
11146
11147
11148 /**
11149  * gtk_tree_view_remove_column:
11150  * @tree_view: A #GtkTreeView.
11151  * @column: The #GtkTreeViewColumn to remove.
11152  *
11153  * Removes @column from @tree_view.
11154  *
11155  * Return value: The number of columns in @tree_view after removing.
11156  **/
11157 gint
11158 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11159                              GtkTreeViewColumn *column)
11160 {
11161   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11162   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11163   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11164
11165   if (tree_view->priv->focus_column == column)
11166     tree_view->priv->focus_column = NULL;
11167
11168   if (tree_view->priv->edited_column == column)
11169     {
11170       gtk_tree_view_stop_editing (tree_view, TRUE);
11171
11172       /* no need to, but just to be sure ... */
11173       tree_view->priv->edited_column = NULL;
11174     }
11175
11176   g_signal_handlers_disconnect_by_func (column,
11177                                         G_CALLBACK (column_sizing_notify),
11178                                         tree_view);
11179
11180   _gtk_tree_view_column_unset_tree_view (column);
11181
11182   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11183   tree_view->priv->n_columns--;
11184
11185   if (GTK_WIDGET_REALIZED (tree_view))
11186     {
11187       GList *list;
11188
11189       _gtk_tree_view_column_unrealize_button (column);
11190       for (list = tree_view->priv->columns; list; list = list->next)
11191         {
11192           GtkTreeViewColumn *tmp_column;
11193
11194           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11195           if (tmp_column->visible)
11196             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11197         }
11198
11199       if (tree_view->priv->n_columns == 0 &&
11200           gtk_tree_view_get_headers_visible (tree_view))
11201         gdk_window_hide (tree_view->priv->header_window);
11202
11203       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11204     }
11205
11206   g_object_unref (column);
11207   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11208
11209   return tree_view->priv->n_columns;
11210 }
11211
11212 /**
11213  * gtk_tree_view_insert_column:
11214  * @tree_view: A #GtkTreeView.
11215  * @column: The #GtkTreeViewColumn to be inserted.
11216  * @position: The position to insert @column in.
11217  *
11218  * This inserts the @column into the @tree_view at @position.  If @position is
11219  * -1, then the column is inserted at the end. If @tree_view has
11220  * "fixed_height" mode enabled, then @column must have its "sizing" property
11221  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11222  *
11223  * Return value: The number of columns in @tree_view after insertion.
11224  **/
11225 gint
11226 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11227                              GtkTreeViewColumn *column,
11228                              gint               position)
11229 {
11230   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11231   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11232   g_return_val_if_fail (column->tree_view == NULL, -1);
11233
11234   if (tree_view->priv->fixed_height_mode)
11235     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11236                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11237
11238   g_object_ref_sink (column);
11239
11240   if (tree_view->priv->n_columns == 0 &&
11241       GTK_WIDGET_REALIZED (tree_view) &&
11242       gtk_tree_view_get_headers_visible (tree_view))
11243     {
11244       gdk_window_show (tree_view->priv->header_window);
11245     }
11246
11247   g_signal_connect (column, "notify::sizing",
11248                     G_CALLBACK (column_sizing_notify), tree_view);
11249
11250   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11251                                             column, position);
11252   tree_view->priv->n_columns++;
11253
11254   _gtk_tree_view_column_set_tree_view (column, tree_view);
11255
11256   if (GTK_WIDGET_REALIZED (tree_view))
11257     {
11258       GList *list;
11259
11260       _gtk_tree_view_column_realize_button (column);
11261
11262       for (list = tree_view->priv->columns; list; list = list->next)
11263         {
11264           column = GTK_TREE_VIEW_COLUMN (list->data);
11265           if (column->visible)
11266             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11267         }
11268       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11269     }
11270
11271   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11272
11273   return tree_view->priv->n_columns;
11274 }
11275
11276 /**
11277  * gtk_tree_view_insert_column_with_attributes:
11278  * @tree_view: A #GtkTreeView
11279  * @position: The position to insert the new column in.
11280  * @title: The title to set the header to.
11281  * @cell: The #GtkCellRenderer.
11282  * @Varargs: A %NULL-terminated list of attributes.
11283  *
11284  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11285  * @position.  If @position is -1, then the newly created column is inserted at
11286  * the end.  The column is initialized with the attributes given. If @tree_view
11287  * has "fixed_height" mode enabled, then the new column will have its sizing
11288  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11289  *
11290  * Return value: The number of columns in @tree_view after insertion.
11291  **/
11292 gint
11293 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11294                                              gint             position,
11295                                              const gchar     *title,
11296                                              GtkCellRenderer *cell,
11297                                              ...)
11298 {
11299   GtkTreeViewColumn *column;
11300   gchar *attribute;
11301   va_list args;
11302   gint column_id;
11303
11304   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11305
11306   column = gtk_tree_view_column_new ();
11307   if (tree_view->priv->fixed_height_mode)
11308     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11309
11310   gtk_tree_view_column_set_title (column, title);
11311   gtk_tree_view_column_pack_start (column, cell, TRUE);
11312
11313   va_start (args, cell);
11314
11315   attribute = va_arg (args, gchar *);
11316
11317   while (attribute != NULL)
11318     {
11319       column_id = va_arg (args, gint);
11320       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11321       attribute = va_arg (args, gchar *);
11322     }
11323
11324   va_end (args);
11325
11326   gtk_tree_view_insert_column (tree_view, column, position);
11327
11328   return tree_view->priv->n_columns;
11329 }
11330
11331 /**
11332  * gtk_tree_view_insert_column_with_data_func:
11333  * @tree_view: a #GtkTreeView
11334  * @position: Position to insert, -1 for append
11335  * @title: column title
11336  * @cell: cell renderer for column
11337  * @func: function to set attributes of cell renderer
11338  * @data: data for @func
11339  * @dnotify: destroy notifier for @data
11340  *
11341  * Convenience function that inserts a new column into the #GtkTreeView
11342  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11343  * attributes (normally using data from the model). See also
11344  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11345  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11346  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11347  *
11348  * Return value: number of columns in the tree view post-insert
11349  **/
11350 gint
11351 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11352                                              gint                       position,
11353                                              const gchar               *title,
11354                                              GtkCellRenderer           *cell,
11355                                              GtkTreeCellDataFunc        func,
11356                                              gpointer                   data,
11357                                              GDestroyNotify             dnotify)
11358 {
11359   GtkTreeViewColumn *column;
11360
11361   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11362
11363   column = gtk_tree_view_column_new ();
11364   if (tree_view->priv->fixed_height_mode)
11365     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11366
11367   gtk_tree_view_column_set_title (column, title);
11368   gtk_tree_view_column_pack_start (column, cell, TRUE);
11369   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11370
11371   gtk_tree_view_insert_column (tree_view, column, position);
11372
11373   return tree_view->priv->n_columns;
11374 }
11375
11376 /**
11377  * gtk_tree_view_get_column:
11378  * @tree_view: A #GtkTreeView.
11379  * @n: The position of the column, counting from 0.
11380  *
11381  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11382  *
11383  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11384  * range of columns.
11385  **/
11386 GtkTreeViewColumn *
11387 gtk_tree_view_get_column (GtkTreeView *tree_view,
11388                           gint         n)
11389 {
11390   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11391
11392   if (n < 0 || n >= tree_view->priv->n_columns)
11393     return NULL;
11394
11395   if (tree_view->priv->columns == NULL)
11396     return NULL;
11397
11398   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11399 }
11400
11401 /**
11402  * gtk_tree_view_get_columns:
11403  * @tree_view: A #GtkTreeView
11404  *
11405  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11406  * The returned list must be freed with g_list_free ().
11407  *
11408  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11409  **/
11410 GList *
11411 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11412 {
11413   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11414
11415   return g_list_copy (tree_view->priv->columns);
11416 }
11417
11418 /**
11419  * gtk_tree_view_move_column_after:
11420  * @tree_view: A #GtkTreeView
11421  * @column: The #GtkTreeViewColumn to be moved.
11422  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11423  *
11424  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11425  * @column is placed in the first position.
11426  **/
11427 void
11428 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11429                                  GtkTreeViewColumn *column,
11430                                  GtkTreeViewColumn *base_column)
11431 {
11432   GList *column_list_el, *base_el = NULL;
11433
11434   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11435
11436   column_list_el = g_list_find (tree_view->priv->columns, column);
11437   g_return_if_fail (column_list_el != NULL);
11438
11439   if (base_column)
11440     {
11441       base_el = g_list_find (tree_view->priv->columns, base_column);
11442       g_return_if_fail (base_el != NULL);
11443     }
11444
11445   if (column_list_el->prev == base_el)
11446     return;
11447
11448   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11449   if (base_el == NULL)
11450     {
11451       column_list_el->prev = NULL;
11452       column_list_el->next = tree_view->priv->columns;
11453       if (column_list_el->next)
11454         column_list_el->next->prev = column_list_el;
11455       tree_view->priv->columns = column_list_el;
11456     }
11457   else
11458     {
11459       column_list_el->prev = base_el;
11460       column_list_el->next = base_el->next;
11461       if (column_list_el->next)
11462         column_list_el->next->prev = column_list_el;
11463       base_el->next = column_list_el;
11464     }
11465
11466   if (GTK_WIDGET_REALIZED (tree_view))
11467     {
11468       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11469       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11470     }
11471
11472   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11473 }
11474
11475 /**
11476  * gtk_tree_view_set_expander_column:
11477  * @tree_view: A #GtkTreeView
11478  * @column: %NULL, or the column to draw the expander arrow at.
11479  *
11480  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11481  * If @column is %NULL, then the expander arrow is always at the first
11482  * visible column.
11483  *
11484  * If you do not want expander arrow to appear in your tree, set the
11485  * expander column to a hidden column.
11486  **/
11487 void
11488 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11489                                    GtkTreeViewColumn *column)
11490 {
11491   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11492   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11493
11494   if (tree_view->priv->expander_column != column)
11495     {
11496       GList *list;
11497
11498       if (column)
11499         {
11500           /* Confirm that column is in tree_view */
11501           for (list = tree_view->priv->columns; list; list = list->next)
11502             if (list->data == column)
11503               break;
11504           g_return_if_fail (list != NULL);
11505         }
11506
11507       tree_view->priv->expander_column = column;
11508       g_object_notify (G_OBJECT (tree_view), "expander-column");
11509     }
11510 }
11511
11512 /**
11513  * gtk_tree_view_get_expander_column:
11514  * @tree_view: A #GtkTreeView
11515  *
11516  * Returns the column that is the current expander column.  This
11517  * column has the expander arrow drawn next to it.
11518  *
11519  * Return value: The expander column.
11520  **/
11521 GtkTreeViewColumn *
11522 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11523 {
11524   GList *list;
11525
11526   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11527
11528   for (list = tree_view->priv->columns; list; list = list->next)
11529     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11530       return (GtkTreeViewColumn *) list->data;
11531   return NULL;
11532 }
11533
11534
11535 /**
11536  * gtk_tree_view_set_column_drag_function:
11537  * @tree_view: A #GtkTreeView.
11538  * @func: A function to determine which columns are reorderable, or %NULL.
11539  * @user_data: User data to be passed to @func, or %NULL
11540  * @destroy: Destroy notifier for @user_data, or %NULL
11541  *
11542  * Sets a user function for determining where a column may be dropped when
11543  * dragged.  This function is called on every column pair in turn at the
11544  * beginning of a column drag to determine where a drop can take place.  The
11545  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11546  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11547  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11548  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11549  * @tree_view reverts to the default behavior of allowing all columns to be
11550  * dropped everywhere.
11551  **/
11552 void
11553 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11554                                         GtkTreeViewColumnDropFunc  func,
11555                                         gpointer                   user_data,
11556                                         GDestroyNotify             destroy)
11557 {
11558   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11559
11560   if (tree_view->priv->column_drop_func_data_destroy)
11561     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11562
11563   tree_view->priv->column_drop_func = func;
11564   tree_view->priv->column_drop_func_data = user_data;
11565   tree_view->priv->column_drop_func_data_destroy = destroy;
11566 }
11567
11568 /**
11569  * gtk_tree_view_scroll_to_point:
11570  * @tree_view: a #GtkTreeView
11571  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11572  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11573  *
11574  * Scrolls the tree view such that the top-left corner of the visible
11575  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11576  * in tree coordinates.  The @tree_view must be realized before
11577  * this function is called.  If it isn't, you probably want to be
11578  * using gtk_tree_view_scroll_to_cell().
11579  *
11580  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11581  **/
11582 void
11583 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11584                                gint         tree_x,
11585                                gint         tree_y)
11586 {
11587   GtkAdjustment *hadj;
11588   GtkAdjustment *vadj;
11589
11590   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11591   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
11592
11593   hadj = tree_view->priv->hadjustment;
11594   vadj = tree_view->priv->vadjustment;
11595
11596   if (tree_x != -1)
11597     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
11598   if (tree_y != -1)
11599     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
11600 }
11601
11602 /**
11603  * gtk_tree_view_scroll_to_cell:
11604  * @tree_view: A #GtkTreeView.
11605  * @path: (allow-none): The path of the row to move to, or %NULL.
11606  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11607  * @use_align: whether to use alignment arguments, or %FALSE.
11608  * @row_align: The vertical alignment of the row specified by @path.
11609  * @col_align: The horizontal alignment of the column specified by @column.
11610  *
11611  * Moves the alignments of @tree_view to the position specified by @column and
11612  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11613  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11614  * or @path need to be non-%NULL.  @row_align determines where the row is
11615  * placed, and @col_align determines where @column is placed.  Both are expected
11616  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11617  * right/bottom alignment, 0.5 means center.
11618  *
11619  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11620  * tree does the minimum amount of work to scroll the cell onto the screen.
11621  * This means that the cell will be scrolled to the edge closest to its current
11622  * position.  If the cell is currently visible on the screen, nothing is done.
11623  *
11624  * This function only works if the model is set, and @path is a valid row on the
11625  * model.  If the model changes before the @tree_view is realized, the centered
11626  * path will be modified to reflect this change.
11627  **/
11628 void
11629 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11630                               GtkTreePath       *path,
11631                               GtkTreeViewColumn *column,
11632                               gboolean           use_align,
11633                               gfloat             row_align,
11634                               gfloat             col_align)
11635 {
11636   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11637   g_return_if_fail (tree_view->priv->model != NULL);
11638   g_return_if_fail (tree_view->priv->tree != NULL);
11639   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11640   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11641   g_return_if_fail (path != NULL || column != NULL);
11642
11643 #if 0
11644   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11645            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11646 #endif
11647   row_align = CLAMP (row_align, 0.0, 1.0);
11648   col_align = CLAMP (col_align, 0.0, 1.0);
11649
11650
11651   /* Note: Despite the benefits that come from having one code path for the
11652    * scrolling code, we short-circuit validate_visible_area's immplementation as
11653    * it is much slower than just going to the point.
11654    */
11655   if (! GTK_WIDGET_VISIBLE (tree_view) ||
11656       ! GTK_WIDGET_REALIZED (tree_view) ||
11657       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11658       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11659     {
11660       if (tree_view->priv->scroll_to_path)
11661         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11662
11663       tree_view->priv->scroll_to_path = NULL;
11664       tree_view->priv->scroll_to_column = NULL;
11665
11666       if (path)
11667         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11668       if (column)
11669         tree_view->priv->scroll_to_column = column;
11670       tree_view->priv->scroll_to_use_align = use_align;
11671       tree_view->priv->scroll_to_row_align = row_align;
11672       tree_view->priv->scroll_to_col_align = col_align;
11673
11674       install_presize_handler (tree_view);
11675     }
11676   else
11677     {
11678       GdkRectangle cell_rect;
11679       GdkRectangle vis_rect;
11680       gint dest_x, dest_y;
11681
11682       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11683       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11684
11685       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11686
11687       dest_x = vis_rect.x;
11688       dest_y = vis_rect.y;
11689
11690       if (column)
11691         {
11692           if (use_align)
11693             {
11694               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11695             }
11696           else
11697             {
11698               if (cell_rect.x < vis_rect.x)
11699                 dest_x = cell_rect.x;
11700               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11701                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11702             }
11703         }
11704
11705       if (path)
11706         {
11707           if (use_align)
11708             {
11709               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11710               dest_y = MAX (dest_y, 0);
11711             }
11712           else
11713             {
11714               if (cell_rect.y < vis_rect.y)
11715                 dest_y = cell_rect.y;
11716               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11717                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11718             }
11719         }
11720
11721       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11722     }
11723 }
11724
11725 /**
11726  * gtk_tree_view_row_activated:
11727  * @tree_view: A #GtkTreeView
11728  * @path: The #GtkTreePath to be activated.
11729  * @column: The #GtkTreeViewColumn to be activated.
11730  *
11731  * Activates the cell determined by @path and @column.
11732  **/
11733 void
11734 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11735                              GtkTreePath       *path,
11736                              GtkTreeViewColumn *column)
11737 {
11738   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11739
11740   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11741 }
11742
11743
11744 static void
11745 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11746                                           GtkRBNode *node,
11747                                           gpointer   data)
11748 {
11749   GtkTreeView *tree_view = data;
11750
11751   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11752       node->children)
11753     {
11754       GtkTreePath *path;
11755       GtkTreeIter iter;
11756
11757       path = _gtk_tree_view_find_path (tree_view, tree, node);
11758       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11759
11760       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11761
11762       gtk_tree_path_free (path);
11763     }
11764
11765   if (node->children)
11766     _gtk_rbtree_traverse (node->children,
11767                           node->children->root,
11768                           G_PRE_ORDER,
11769                           gtk_tree_view_expand_all_emission_helper,
11770                           tree_view);
11771 }
11772
11773 /**
11774  * gtk_tree_view_expand_all:
11775  * @tree_view: A #GtkTreeView.
11776  *
11777  * Recursively expands all nodes in the @tree_view.
11778  **/
11779 void
11780 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11781 {
11782   GtkTreePath *path;
11783   GtkRBTree *tree;
11784   GtkRBNode *node;
11785
11786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11787
11788   if (tree_view->priv->tree == NULL)
11789     return;
11790
11791   path = gtk_tree_path_new_first ();
11792   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11793
11794   while (node)
11795     {
11796       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11797       node = _gtk_rbtree_next (tree, node);
11798       gtk_tree_path_next (path);
11799   }
11800
11801   gtk_tree_path_free (path);
11802 }
11803
11804 /* Timeout to animate the expander during expands and collapses */
11805 static gboolean
11806 expand_collapse_timeout (gpointer data)
11807 {
11808   return do_expand_collapse (data);
11809 }
11810
11811 static void
11812 add_expand_collapse_timeout (GtkTreeView *tree_view,
11813                              GtkRBTree   *tree,
11814                              GtkRBNode   *node,
11815                              gboolean     expand)
11816 {
11817   if (tree_view->priv->expand_collapse_timeout != 0)
11818     return;
11819
11820   tree_view->priv->expand_collapse_timeout =
11821       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11822   tree_view->priv->expanded_collapsed_tree = tree;
11823   tree_view->priv->expanded_collapsed_node = node;
11824
11825   if (expand)
11826     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11827   else
11828     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11829 }
11830
11831 static void
11832 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11833 {
11834   if (tree_view->priv->expand_collapse_timeout)
11835     {
11836       g_source_remove (tree_view->priv->expand_collapse_timeout);
11837       tree_view->priv->expand_collapse_timeout = 0;
11838     }
11839
11840   if (tree_view->priv->expanded_collapsed_node != NULL)
11841     {
11842       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11843       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11844
11845       tree_view->priv->expanded_collapsed_node = NULL;
11846     }
11847 }
11848
11849 static void
11850 cancel_arrow_animation (GtkTreeView *tree_view)
11851 {
11852   if (tree_view->priv->expand_collapse_timeout)
11853     {
11854       while (do_expand_collapse (tree_view));
11855
11856       remove_expand_collapse_timeout (tree_view);
11857     }
11858 }
11859
11860 static gboolean
11861 do_expand_collapse (GtkTreeView *tree_view)
11862 {
11863   GtkRBNode *node;
11864   GtkRBTree *tree;
11865   gboolean expanding;
11866   gboolean redraw;
11867
11868   redraw = FALSE;
11869   expanding = TRUE;
11870
11871   node = tree_view->priv->expanded_collapsed_node;
11872   tree = tree_view->priv->expanded_collapsed_tree;
11873
11874   if (node->children == NULL)
11875     expanding = FALSE;
11876
11877   if (expanding)
11878     {
11879       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11880         {
11881           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11882           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11883
11884           redraw = TRUE;
11885
11886         }
11887       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11888         {
11889           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11890
11891           redraw = TRUE;
11892         }
11893     }
11894   else
11895     {
11896       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11897         {
11898           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11899           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11900
11901           redraw = TRUE;
11902         }
11903       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11904         {
11905           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11906
11907           redraw = TRUE;
11908
11909         }
11910     }
11911
11912   if (redraw)
11913     {
11914       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11915
11916       return TRUE;
11917     }
11918
11919   return FALSE;
11920 }
11921
11922 /**
11923  * gtk_tree_view_collapse_all:
11924  * @tree_view: A #GtkTreeView.
11925  *
11926  * Recursively collapses all visible, expanded nodes in @tree_view.
11927  **/
11928 void
11929 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11930 {
11931   GtkRBTree *tree;
11932   GtkRBNode *node;
11933   GtkTreePath *path;
11934   gint *indices;
11935
11936   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11937
11938   if (tree_view->priv->tree == NULL)
11939     return;
11940
11941   path = gtk_tree_path_new ();
11942   gtk_tree_path_down (path);
11943   indices = gtk_tree_path_get_indices (path);
11944
11945   tree = tree_view->priv->tree;
11946   node = tree->root;
11947   while (node && node->left != tree->nil)
11948     node = node->left;
11949
11950   while (node)
11951     {
11952       if (node->children)
11953         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
11954       indices[0]++;
11955       node = _gtk_rbtree_next (tree, node);
11956     }
11957
11958   gtk_tree_path_free (path);
11959 }
11960
11961 /**
11962  * gtk_tree_view_expand_to_path:
11963  * @tree_view: A #GtkTreeView.
11964  * @path: path to a row.
11965  *
11966  * Expands the row at @path. This will also expand all parent rows of
11967  * @path as necessary.
11968  *
11969  * Since: 2.2
11970  **/
11971 void
11972 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
11973                               GtkTreePath *path)
11974 {
11975   gint i, depth;
11976   gint *indices;
11977   GtkTreePath *tmp;
11978
11979   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11980   g_return_if_fail (path != NULL);
11981
11982   depth = gtk_tree_path_get_depth (path);
11983   indices = gtk_tree_path_get_indices (path);
11984
11985   tmp = gtk_tree_path_new ();
11986   g_return_if_fail (tmp != NULL);
11987
11988   for (i = 0; i < depth; i++)
11989     {
11990       gtk_tree_path_append_index (tmp, indices[i]);
11991       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
11992     }
11993
11994   gtk_tree_path_free (tmp);
11995 }
11996
11997 /* FIXME the bool return values for expand_row and collapse_row are
11998  * not analagous; they should be TRUE if the row had children and
11999  * was not already in the requested state.
12000  */
12001
12002
12003 static gboolean
12004 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12005                                GtkTreePath *path,
12006                                GtkRBTree   *tree,
12007                                GtkRBNode   *node,
12008                                gboolean     open_all,
12009                                gboolean     animate)
12010 {
12011   GtkTreeIter iter;
12012   GtkTreeIter temp;
12013   gboolean expand;
12014
12015   if (animate)
12016     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12017                   "gtk-enable-animations", &animate,
12018                   NULL);
12019
12020   remove_auto_expand_timeout (tree_view);
12021
12022   if (node->children && !open_all)
12023     return FALSE;
12024
12025   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12026     return FALSE;
12027
12028   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12029   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12030     return FALSE;
12031
12032
12033    if (node->children && open_all)
12034     {
12035       gboolean retval = FALSE;
12036       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12037
12038       gtk_tree_path_append_index (tmp_path, 0);
12039       tree = node->children;
12040       node = tree->root;
12041       while (node->left != tree->nil)
12042         node = node->left;
12043       /* try to expand the children */
12044       do
12045         {
12046          gboolean t;
12047          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12048                                             TRUE, animate);
12049          if (t)
12050            retval = TRUE;
12051
12052          gtk_tree_path_next (tmp_path);
12053          node = _gtk_rbtree_next (tree, node);
12054        }
12055       while (node != NULL);
12056
12057       gtk_tree_path_free (tmp_path);
12058
12059       return retval;
12060     }
12061
12062   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12063
12064   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12065     return FALSE;
12066
12067   if (expand)
12068     return FALSE;
12069
12070   node->children = _gtk_rbtree_new ();
12071   node->children->parent_tree = tree;
12072   node->children->parent_node = node;
12073
12074   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12075
12076   gtk_tree_view_build_tree (tree_view,
12077                             node->children,
12078                             &temp,
12079                             gtk_tree_path_get_depth (path) + 1,
12080                             open_all);
12081
12082   remove_expand_collapse_timeout (tree_view);
12083
12084   if (animate)
12085     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12086
12087   install_presize_handler (tree_view);
12088
12089   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12090   if (open_all && node->children)
12091     {
12092       _gtk_rbtree_traverse (node->children,
12093                             node->children->root,
12094                             G_PRE_ORDER,
12095                             gtk_tree_view_expand_all_emission_helper,
12096                             tree_view);
12097     }
12098   return TRUE;
12099 }
12100
12101
12102 /**
12103  * gtk_tree_view_expand_row:
12104  * @tree_view: a #GtkTreeView
12105  * @path: path to a row
12106  * @open_all: whether to recursively expand, or just expand immediate children
12107  *
12108  * Opens the row so its children are visible.
12109  *
12110  * Return value: %TRUE if the row existed and had children
12111  **/
12112 gboolean
12113 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12114                           GtkTreePath *path,
12115                           gboolean     open_all)
12116 {
12117   GtkRBTree *tree;
12118   GtkRBNode *node;
12119
12120   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12121   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12122   g_return_val_if_fail (path != NULL, FALSE);
12123
12124   if (_gtk_tree_view_find_node (tree_view,
12125                                 path,
12126                                 &tree,
12127                                 &node))
12128     return FALSE;
12129
12130   if (tree != NULL)
12131     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12132   else
12133     return FALSE;
12134 }
12135
12136 static gboolean
12137 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12138                                  GtkTreePath *path,
12139                                  GtkRBTree   *tree,
12140                                  GtkRBNode   *node,
12141                                  gboolean     animate)
12142 {
12143   GtkTreeIter iter;
12144   GtkTreeIter children;
12145   gboolean collapse;
12146   gint x, y;
12147   GList *list;
12148   GdkWindow *child, *parent;
12149
12150   if (animate)
12151     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12152                   "gtk-enable-animations", &animate,
12153                   NULL);
12154
12155   remove_auto_expand_timeout (tree_view);
12156
12157   if (node->children == NULL)
12158     return FALSE;
12159
12160   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12161
12162   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12163
12164   if (collapse)
12165     return FALSE;
12166
12167   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12168    * a chance to prelight the correct node below */
12169
12170   if (tree_view->priv->prelight_tree)
12171     {
12172       GtkRBTree *parent_tree;
12173       GtkRBNode *parent_node;
12174
12175       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12176       parent_node = tree_view->priv->prelight_tree->parent_node;
12177       while (parent_tree)
12178         {
12179           if (parent_tree == tree && parent_node == node)
12180             {
12181               ensure_unprelighted (tree_view);
12182               break;
12183             }
12184           parent_node = parent_tree->parent_node;
12185           parent_tree = parent_tree->parent_tree;
12186         }
12187     }
12188
12189   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12190
12191   for (list = tree_view->priv->columns; list; list = list->next)
12192     {
12193       GtkTreeViewColumn *column = list->data;
12194
12195       if (column->visible == FALSE)
12196         continue;
12197       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12198         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12199     }
12200
12201   if (tree_view->priv->destroy_count_func)
12202     {
12203       GtkTreePath *child_path;
12204       gint child_count = 0;
12205       child_path = gtk_tree_path_copy (path);
12206       gtk_tree_path_down (child_path);
12207       if (node->children)
12208         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12209       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12210       gtk_tree_path_free (child_path);
12211     }
12212
12213   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12214     {
12215       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12216
12217       if (gtk_tree_path_is_ancestor (path, cursor_path))
12218         {
12219           gtk_tree_row_reference_free (tree_view->priv->cursor);
12220           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12221                                                                       tree_view->priv->model,
12222                                                                       path);
12223         }
12224       gtk_tree_path_free (cursor_path);
12225     }
12226
12227   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12228     {
12229       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12230       if (gtk_tree_path_is_ancestor (path, anchor_path))
12231         {
12232           gtk_tree_row_reference_free (tree_view->priv->anchor);
12233           tree_view->priv->anchor = NULL;
12234         }
12235       gtk_tree_path_free (anchor_path);
12236     }
12237
12238   /* Stop a pending double click */
12239   tree_view->priv->last_button_x = -1;
12240   tree_view->priv->last_button_y = -1;
12241
12242   remove_expand_collapse_timeout (tree_view);
12243
12244   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12245     {
12246       _gtk_rbtree_remove (node->children);
12247       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12248     }
12249   else
12250     _gtk_rbtree_remove (node->children);
12251
12252   if (animate)
12253     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12254
12255   if (GTK_WIDGET_MAPPED (tree_view))
12256     {
12257       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12258     }
12259
12260   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12261
12262   if (GTK_WIDGET_MAPPED (tree_view))
12263     {
12264       /* now that we've collapsed all rows, we want to try to set the prelight
12265        * again. To do this, we fake a motion event and send it to ourselves. */
12266
12267       child = tree_view->priv->bin_window;
12268       parent = gdk_window_get_parent (child);
12269
12270       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12271         {
12272           GdkEventMotion event;
12273           gint child_x, child_y;
12274
12275           gdk_window_get_position (child, &child_x, &child_y);
12276
12277           event.window = tree_view->priv->bin_window;
12278           event.x = x - child_x;
12279           event.y = y - child_y;
12280
12281           /* despite the fact this isn't a real event, I'm almost positive it will
12282            * never trigger a drag event.  maybe_drag is the only function that uses
12283            * more than just event.x and event.y. */
12284           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12285         }
12286     }
12287
12288   return TRUE;
12289 }
12290
12291 /**
12292  * gtk_tree_view_collapse_row:
12293  * @tree_view: a #GtkTreeView
12294  * @path: path to a row in the @tree_view
12295  *
12296  * Collapses a row (hides its child rows, if they exist).
12297  *
12298  * Return value: %TRUE if the row was collapsed.
12299  **/
12300 gboolean
12301 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12302                             GtkTreePath *path)
12303 {
12304   GtkRBTree *tree;
12305   GtkRBNode *node;
12306
12307   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12308   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12309   g_return_val_if_fail (path != NULL, FALSE);
12310
12311   if (_gtk_tree_view_find_node (tree_view,
12312                                 path,
12313                                 &tree,
12314                                 &node))
12315     return FALSE;
12316
12317   if (tree == NULL || node->children == NULL)
12318     return FALSE;
12319
12320   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12321 }
12322
12323 static void
12324 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12325                                         GtkRBTree              *tree,
12326                                         GtkTreePath            *path,
12327                                         GtkTreeViewMappingFunc  func,
12328                                         gpointer                user_data)
12329 {
12330   GtkRBNode *node;
12331
12332   if (tree == NULL || tree->root == NULL)
12333     return;
12334
12335   node = tree->root;
12336
12337   while (node && node->left != tree->nil)
12338     node = node->left;
12339
12340   while (node)
12341     {
12342       if (node->children)
12343         {
12344           (* func) (tree_view, path, user_data);
12345           gtk_tree_path_down (path);
12346           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12347           gtk_tree_path_up (path);
12348         }
12349       gtk_tree_path_next (path);
12350       node = _gtk_rbtree_next (tree, node);
12351     }
12352 }
12353
12354 /**
12355  * gtk_tree_view_map_expanded_rows:
12356  * @tree_view: A #GtkTreeView
12357  * @func: A function to be called
12358  * @data: User data to be passed to the function.
12359  *
12360  * Calls @func on all expanded rows.
12361  **/
12362 void
12363 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12364                                  GtkTreeViewMappingFunc  func,
12365                                  gpointer                user_data)
12366 {
12367   GtkTreePath *path;
12368
12369   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12370   g_return_if_fail (func != NULL);
12371
12372   path = gtk_tree_path_new_first ();
12373
12374   gtk_tree_view_map_expanded_rows_helper (tree_view,
12375                                           tree_view->priv->tree,
12376                                           path, func, user_data);
12377
12378   gtk_tree_path_free (path);
12379 }
12380
12381 /**
12382  * gtk_tree_view_row_expanded:
12383  * @tree_view: A #GtkTreeView.
12384  * @path: A #GtkTreePath to test expansion state.
12385  *
12386  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12387  *
12388  * Return value: %TRUE if #path is expanded.
12389  **/
12390 gboolean
12391 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12392                             GtkTreePath *path)
12393 {
12394   GtkRBTree *tree;
12395   GtkRBNode *node;
12396
12397   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12398   g_return_val_if_fail (path != NULL, FALSE);
12399
12400   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12401
12402   if (node == NULL)
12403     return FALSE;
12404
12405   return (node->children != NULL);
12406 }
12407
12408 /**
12409  * gtk_tree_view_get_reorderable:
12410  * @tree_view: a #GtkTreeView
12411  *
12412  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12413  * gtk_tree_view_set_reorderable().
12414  *
12415  * Return value: %TRUE if the tree can be reordered.
12416  **/
12417 gboolean
12418 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12419 {
12420   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12421
12422   return tree_view->priv->reorderable;
12423 }
12424
12425 /**
12426  * gtk_tree_view_set_reorderable:
12427  * @tree_view: A #GtkTreeView.
12428  * @reorderable: %TRUE, if the tree can be reordered.
12429  *
12430  * This function is a convenience function to allow you to reorder
12431  * models that support the #GtkDragSourceIface and the
12432  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12433  * these.  If @reorderable is %TRUE, then the user can reorder the
12434  * model by dragging and dropping rows. The developer can listen to
12435  * these changes by connecting to the model's row_inserted and
12436  * row_deleted signals. The reordering is implemented by setting up
12437  * the tree view as a drag source and destination. Therefore, drag and
12438  * drop can not be used in a reorderable view for any other purpose.
12439  *
12440  * This function does not give you any degree of control over the order -- any
12441  * reordering is allowed.  If more control is needed, you should probably
12442  * handle drag and drop manually.
12443  **/
12444 void
12445 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12446                                gboolean     reorderable)
12447 {
12448   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12449
12450   reorderable = reorderable != FALSE;
12451
12452   if (tree_view->priv->reorderable == reorderable)
12453     return;
12454
12455   if (reorderable)
12456     {
12457       const GtkTargetEntry row_targets[] = {
12458         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12459       };
12460
12461       gtk_tree_view_enable_model_drag_source (tree_view,
12462                                               GDK_BUTTON1_MASK,
12463                                               row_targets,
12464                                               G_N_ELEMENTS (row_targets),
12465                                               GDK_ACTION_MOVE);
12466       gtk_tree_view_enable_model_drag_dest (tree_view,
12467                                             row_targets,
12468                                             G_N_ELEMENTS (row_targets),
12469                                             GDK_ACTION_MOVE);
12470     }
12471   else
12472     {
12473       gtk_tree_view_unset_rows_drag_source (tree_view);
12474       gtk_tree_view_unset_rows_drag_dest (tree_view);
12475     }
12476
12477   tree_view->priv->reorderable = reorderable;
12478
12479   g_object_notify (G_OBJECT (tree_view), "reorderable");
12480 }
12481
12482 static void
12483 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12484                                GtkTreePath     *path,
12485                                gboolean         clear_and_select,
12486                                gboolean         clamp_node)
12487 {
12488   GtkRBTree *tree = NULL;
12489   GtkRBNode *node = NULL;
12490
12491   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12492     {
12493       GtkTreePath *cursor_path;
12494       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12495       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12496       gtk_tree_path_free (cursor_path);
12497     }
12498
12499   gtk_tree_row_reference_free (tree_view->priv->cursor);
12500   tree_view->priv->cursor = NULL;
12501
12502   /* One cannot set the cursor on a separator.   Also, if
12503    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12504    * before finding the tree and node belonging to path.  The
12505    * path maps to a non-existing path and we will silently bail out.
12506    * We unset tree and node to avoid further processing.
12507    */
12508   if (!row_is_separator (tree_view, NULL, path)
12509       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12510     {
12511       tree_view->priv->cursor =
12512           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12513                                             tree_view->priv->model,
12514                                             path);
12515     }
12516   else
12517     {
12518       tree = NULL;
12519       node = NULL;
12520     }
12521
12522   if (tree != NULL)
12523     {
12524       GtkRBTree *new_tree = NULL;
12525       GtkRBNode *new_node = NULL;
12526
12527       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12528         {
12529           GtkTreeSelectMode mode = 0;
12530
12531           if (tree_view->priv->ctrl_pressed)
12532             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12533           if (tree_view->priv->shift_pressed)
12534             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12535
12536           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12537                                                     node, tree, path, mode,
12538                                                     FALSE);
12539         }
12540
12541       /* We have to re-find tree and node here again, somebody might have
12542        * cleared the node or the whole tree in the GtkTreeSelection::changed
12543        * callback. If the nodes differ we bail out here.
12544        */
12545       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12546
12547       if (tree != new_tree || node != new_node)
12548         return;
12549
12550       if (clamp_node)
12551         {
12552           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12553           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12554         }
12555     }
12556
12557   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12558 }
12559
12560 /**
12561  * gtk_tree_view_get_cursor:
12562  * @tree_view: A #GtkTreeView
12563  * @path: A pointer to be filled with the current cursor path, or %NULL
12564  * @focus_column: A pointer to be filled with the current focus column, or %NULL
12565  *
12566  * Fills in @path and @focus_column with the current path and focus column.  If
12567  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12568  * currently has focus, then *@focus_column will be %NULL.
12569  *
12570  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12571  * you are done with it.
12572  **/
12573 void
12574 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12575                           GtkTreePath       **path,
12576                           GtkTreeViewColumn **focus_column)
12577 {
12578   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12579
12580   if (path)
12581     {
12582       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12583         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12584       else
12585         *path = NULL;
12586     }
12587
12588   if (focus_column)
12589     {
12590       *focus_column = tree_view->priv->focus_column;
12591     }
12592 }
12593
12594 /**
12595  * gtk_tree_view_set_cursor:
12596  * @tree_view: A #GtkTreeView
12597  * @path: A #GtkTreePath
12598  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12599  * @start_editing: %TRUE if the specified cell should start being edited.
12600  *
12601  * Sets the current keyboard focus to be at @path, and selects it.  This is
12602  * useful when you want to focus the user's attention on a particular row.  If
12603  * @focus_column is not %NULL, then focus is given to the column specified by
12604  * it. Additionally, if @focus_column is specified, and @start_editing is
12605  * %TRUE, then editing should be started in the specified cell.
12606  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12607  * in order to give keyboard focus to the widget.  Please note that editing
12608  * can only happen when the widget is realized.
12609  *
12610  * If @path is invalid for @model, the current cursor (if any) will be unset
12611  * and the function will return without failing.
12612  **/
12613 void
12614 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12615                           GtkTreePath       *path,
12616                           GtkTreeViewColumn *focus_column,
12617                           gboolean           start_editing)
12618 {
12619   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12620                                     NULL, start_editing);
12621 }
12622
12623 /**
12624  * gtk_tree_view_set_cursor_on_cell:
12625  * @tree_view: A #GtkTreeView
12626  * @path: A #GtkTreePath
12627  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12628  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12629  * @start_editing: %TRUE if the specified cell should start being edited.
12630  *
12631  * Sets the current keyboard focus to be at @path, and selects it.  This is
12632  * useful when you want to focus the user's attention on a particular row.  If
12633  * @focus_column is not %NULL, then focus is given to the column specified by
12634  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12635  * contains 2 or more editable or activatable cells, then focus is given to
12636  * the cell specified by @focus_cell. Additionally, if @focus_column is
12637  * specified, and @start_editing is %TRUE, then editing should be started in
12638  * the specified cell.  This function is often followed by
12639  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12640  * widget.  Please note that editing can only happen when the widget is
12641  * realized.
12642  *
12643  * If @path is invalid for @model, the current cursor (if any) will be unset
12644  * and the function will return without failing.
12645  *
12646  * Since: 2.2
12647  **/
12648 void
12649 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12650                                   GtkTreePath       *path,
12651                                   GtkTreeViewColumn *focus_column,
12652                                   GtkCellRenderer   *focus_cell,
12653                                   gboolean           start_editing)
12654 {
12655   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12656   g_return_if_fail (path != NULL);
12657   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12658
12659   if (!tree_view->priv->model)
12660     return;
12661
12662   if (focus_cell)
12663     {
12664       g_return_if_fail (focus_column);
12665       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12666     }
12667
12668   /* cancel the current editing, if it exists */
12669   if (tree_view->priv->edited_column &&
12670       tree_view->priv->edited_column->editable_widget)
12671     gtk_tree_view_stop_editing (tree_view, TRUE);
12672
12673   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12674
12675   if (focus_column && focus_column->visible)
12676     {
12677       GList *list;
12678       gboolean column_in_tree = FALSE;
12679
12680       for (list = tree_view->priv->columns; list; list = list->next)
12681         if (list->data == focus_column)
12682           {
12683             column_in_tree = TRUE;
12684             break;
12685           }
12686       g_return_if_fail (column_in_tree);
12687       tree_view->priv->focus_column = focus_column;
12688       if (focus_cell)
12689         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12690       if (start_editing)
12691         gtk_tree_view_start_editing (tree_view, path);
12692     }
12693 }
12694
12695 /**
12696  * gtk_tree_view_get_bin_window:
12697  * @tree_view: A #GtkTreeView
12698  *
12699  * Returns the window that @tree_view renders to.  This is used primarily to
12700  * compare to <literal>event->window</literal> to confirm that the event on
12701  * @tree_view is on the right window.
12702  *
12703  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12704  **/
12705 GdkWindow *
12706 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12707 {
12708   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12709
12710   return tree_view->priv->bin_window;
12711 }
12712
12713 /**
12714  * gtk_tree_view_get_path_at_pos:
12715  * @tree_view: A #GtkTreeView.
12716  * @x: The x position to be identified (relative to bin_window).
12717  * @y: The y position to be identified (relative to bin_window).
12718  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12719  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12720  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
12721  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12722  *
12723  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12724  * (please see gtk_tree_view_get_bin_window()).
12725  * That is, @x and @y are relative to an events coordinates. @x and @y must
12726  * come from an event on the @tree_view only where <literal>event->window ==
12727  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12728  * things like popup menus. If @path is non-%NULL, then it will be filled
12729  * with the #GtkTreePath at that point.  This path should be freed with
12730  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12731  * with the column at that point.  @cell_x and @cell_y return the coordinates
12732  * relative to the cell background (i.e. the @background_area passed to
12733  * gtk_cell_renderer_render()).  This function is only meaningful if
12734  * @tree_view is realized.  Therefore this function will always return %FALSE
12735  * if @tree_view is not realized or does not have a model.
12736  *
12737  * For converting widget coordinates (eg. the ones you get from
12738  * GtkWidget::query-tooltip), please see
12739  * gtk_tree_view_convert_widget_to_bin_window_coords().
12740  *
12741  * Return value: %TRUE if a row exists at that coordinate.
12742  **/
12743 gboolean
12744 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12745                                gint                x,
12746                                gint                y,
12747                                GtkTreePath       **path,
12748                                GtkTreeViewColumn **column,
12749                                gint               *cell_x,
12750                                gint               *cell_y)
12751 {
12752   GtkRBTree *tree;
12753   GtkRBNode *node;
12754   gint y_offset;
12755
12756   g_return_val_if_fail (tree_view != NULL, FALSE);
12757
12758   if (path)
12759     *path = NULL;
12760   if (column)
12761     *column = NULL;
12762
12763   if (tree_view->priv->bin_window == NULL)
12764     return FALSE;
12765
12766   if (tree_view->priv->tree == NULL)
12767     return FALSE;
12768
12769   if (x > tree_view->priv->hadjustment->upper)
12770     return FALSE;
12771
12772   if (x < 0 || y < 0)
12773     return FALSE;
12774
12775   if (column || cell_x)
12776     {
12777       GtkTreeViewColumn *tmp_column;
12778       GtkTreeViewColumn *last_column = NULL;
12779       GList *list;
12780       gint remaining_x = x;
12781       gboolean found = FALSE;
12782       gboolean rtl;
12783
12784       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12785       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12786            list;
12787            list = (rtl ? list->prev : list->next))
12788         {
12789           tmp_column = list->data;
12790
12791           if (tmp_column->visible == FALSE)
12792             continue;
12793
12794           last_column = tmp_column;
12795           if (remaining_x <= tmp_column->width)
12796             {
12797               found = TRUE;
12798
12799               if (column)
12800                 *column = tmp_column;
12801
12802               if (cell_x)
12803                 *cell_x = remaining_x;
12804
12805               break;
12806             }
12807           remaining_x -= tmp_column->width;
12808         }
12809
12810       /* If found is FALSE and there is a last_column, then it the remainder
12811        * space is in that area
12812        */
12813       if (!found)
12814         {
12815           if (last_column)
12816             {
12817               if (column)
12818                 *column = last_column;
12819
12820               if (cell_x)
12821                 *cell_x = last_column->width + remaining_x;
12822             }
12823           else
12824             {
12825               return FALSE;
12826             }
12827         }
12828     }
12829
12830   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12831                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12832                                       &tree, &node);
12833
12834   if (tree == NULL)
12835     return FALSE;
12836
12837   if (cell_y)
12838     *cell_y = y_offset;
12839
12840   if (path)
12841     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12842
12843   return TRUE;
12844 }
12845
12846
12847 /**
12848  * gtk_tree_view_get_cell_area:
12849  * @tree_view: a #GtkTreeView
12850  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12851  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12852  * @rect: rectangle to fill with cell rect
12853  *
12854  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12855  * row specified by @path and the column specified by @column.  If @path is
12856  * %NULL, or points to a path not currently displayed, the @y and @height fields
12857  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12858  * fields will be filled with 0.  The sum of all cell rects does not cover the
12859  * entire tree; there are extra pixels in between rows, for example. The
12860  * returned rectangle is equivalent to the @cell_area passed to
12861  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12862  * realized.
12863  **/
12864 void
12865 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12866                              GtkTreePath        *path,
12867                              GtkTreeViewColumn  *column,
12868                              GdkRectangle       *rect)
12869 {
12870   GtkRBTree *tree = NULL;
12871   GtkRBNode *node = NULL;
12872   gint vertical_separator;
12873   gint horizontal_separator;
12874
12875   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12876   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12877   g_return_if_fail (rect != NULL);
12878   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12879   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
12880
12881   gtk_widget_style_get (GTK_WIDGET (tree_view),
12882                         "vertical-separator", &vertical_separator,
12883                         "horizontal-separator", &horizontal_separator,
12884                         NULL);
12885
12886   rect->x = 0;
12887   rect->y = 0;
12888   rect->width = 0;
12889   rect->height = 0;
12890
12891   if (column)
12892     {
12893       rect->x = column->button->allocation.x + horizontal_separator/2;
12894       rect->width = column->button->allocation.width - horizontal_separator;
12895     }
12896
12897   if (path)
12898     {
12899       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12900
12901       /* Get vertical coords */
12902       if ((!ret && tree == NULL) || ret)
12903         return;
12904
12905       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12906       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12907
12908       if (column &&
12909           gtk_tree_view_is_expander_column (tree_view, column))
12910         {
12911           gint depth = gtk_tree_path_get_depth (path);
12912           gboolean rtl;
12913
12914           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12915
12916           if (!rtl)
12917             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12918           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12919
12920           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12921             {
12922               if (!rtl)
12923                 rect->x += depth * tree_view->priv->expander_size;
12924               rect->width -= depth * tree_view->priv->expander_size;
12925             }
12926
12927           rect->width = MAX (rect->width, 0);
12928         }
12929     }
12930 }
12931
12932 /**
12933  * gtk_tree_view_get_background_area:
12934  * @tree_view: a #GtkTreeView
12935  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12936  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12937  * @rect: rectangle to fill with cell background rect
12938  *
12939  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12940  * row specified by @path and the column specified by @column.  If @path is
12941  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12942  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12943  * fields will be filled with 0.  The returned rectangle is equivalent to the
12944  * @background_area passed to gtk_cell_renderer_render().  These background
12945  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
12946  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
12947  * itself, excluding surrounding borders and the tree expander area.
12948  *
12949  **/
12950 void
12951 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
12952                                    GtkTreePath        *path,
12953                                    GtkTreeViewColumn  *column,
12954                                    GdkRectangle       *rect)
12955 {
12956   GtkRBTree *tree = NULL;
12957   GtkRBNode *node = NULL;
12958
12959   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12960   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12961   g_return_if_fail (rect != NULL);
12962
12963   rect->x = 0;
12964   rect->y = 0;
12965   rect->width = 0;
12966   rect->height = 0;
12967
12968   if (path)
12969     {
12970       /* Get vertical coords */
12971
12972       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
12973           tree == NULL)
12974         return;
12975
12976       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
12977
12978       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
12979     }
12980
12981   if (column)
12982     {
12983       gint x2 = 0;
12984
12985       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
12986       rect->width = x2 - rect->x;
12987     }
12988 }
12989
12990 /**
12991  * gtk_tree_view_get_visible_rect:
12992  * @tree_view: a #GtkTreeView
12993  * @visible_rect: rectangle to fill
12994  *
12995  * Fills @visible_rect with the currently-visible region of the
12996  * buffer, in tree coordinates. Convert to bin_window coordinates with
12997  * gtk_tree_view_convert_tree_to_bin_window_coords().
12998  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
12999  * scrollable area of the tree.
13000  **/
13001 void
13002 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13003                                 GdkRectangle *visible_rect)
13004 {
13005   GtkWidget *widget;
13006
13007   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13008
13009   widget = GTK_WIDGET (tree_view);
13010
13011   if (visible_rect)
13012     {
13013       visible_rect->x = tree_view->priv->hadjustment->value;
13014       visible_rect->y = tree_view->priv->vadjustment->value;
13015       visible_rect->width = widget->allocation.width;
13016       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13017     }
13018 }
13019
13020 /**
13021  * gtk_tree_view_widget_to_tree_coords:
13022  * @tree_view: a #GtkTreeView
13023  * @wx: X coordinate relative to bin_window
13024  * @wy: Y coordinate relative to bin_window
13025  * @tx: return location for tree X coordinate
13026  * @ty: return location for tree Y coordinate
13027  *
13028  * Converts bin_window coordinates to coordinates for the
13029  * tree (the full scrollable area of the tree).
13030  *
13031  * Deprecated: 2.12: Due to historial reasons the name of this function is
13032  * incorrect.  For converting coordinates relative to the widget to
13033  * bin_window coordinates, please see
13034  * gtk_tree_view_convert_widget_to_bin_window_coords().
13035  *
13036  **/
13037 void
13038 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
13039                                       gint         wx,
13040                                       gint         wy,
13041                                       gint        *tx,
13042                                       gint        *ty)
13043 {
13044   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13045
13046   if (tx)
13047     *tx = wx + tree_view->priv->hadjustment->value;
13048   if (ty)
13049     *ty = wy + tree_view->priv->dy;
13050 }
13051
13052 /**
13053  * gtk_tree_view_tree_to_widget_coords:
13054  * @tree_view: a #GtkTreeView
13055  * @tx: tree X coordinate
13056  * @ty: tree Y coordinate
13057  * @wx: return location for X coordinate relative to bin_window
13058  * @wy: return location for Y coordinate relative to bin_window
13059  *
13060  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13061  * to bin_window coordinates.
13062  *
13063  * Deprecated: 2.12: Due to historial reasons the name of this function is
13064  * incorrect.  For converting bin_window coordinates to coordinates relative
13065  * to bin_window, please see
13066  * gtk_tree_view_convert_bin_window_to_widget_coords().
13067  *
13068  **/
13069 void
13070 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
13071                                      gint         tx,
13072                                      gint         ty,
13073                                      gint        *wx,
13074                                      gint        *wy)
13075 {
13076   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13077
13078   if (wx)
13079     *wx = tx - tree_view->priv->hadjustment->value;
13080   if (wy)
13081     *wy = ty - tree_view->priv->dy;
13082 }
13083
13084
13085 /**
13086  * gtk_tree_view_convert_widget_to_tree_coords:
13087  * @tree_view: a #GtkTreeView
13088  * @wx: X coordinate relative to the widget
13089  * @wy: Y coordinate relative to the widget
13090  * @tx: return location for tree X coordinate
13091  * @ty: return location for tree Y coordinate
13092  *
13093  * Converts widget coordinates to coordinates for the
13094  * tree (the full scrollable area of the tree).
13095  *
13096  * Since: 2.12
13097  **/
13098 void
13099 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13100                                              gint         wx,
13101                                              gint         wy,
13102                                              gint        *tx,
13103                                              gint        *ty)
13104 {
13105   gint x, y;
13106
13107   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13108
13109   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13110                                                      wx, wy,
13111                                                      &x, &y);
13112   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13113                                                    x, y,
13114                                                    tx, ty);
13115 }
13116
13117 /**
13118  * gtk_tree_view_convert_tree_to_widget_coords:
13119  * @tree_view: a #GtkTreeView
13120  * @tx: X coordinate relative to the tree
13121  * @ty: Y coordinate relative to the tree
13122  * @wx: return location for widget X coordinate
13123  * @wy: return location for widget Y coordinate
13124  *
13125  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13126  * to widget coordinates.
13127  *
13128  * Since: 2.12
13129  **/
13130 void
13131 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13132                                              gint         tx,
13133                                              gint         ty,
13134                                              gint        *wx,
13135                                              gint        *wy)
13136 {
13137   gint x, y;
13138
13139   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13140
13141   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13142                                                    tx, ty,
13143                                                    &x, &y);
13144   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13145                                                      x, y,
13146                                                      wx, wy);
13147 }
13148
13149 /**
13150  * gtk_tree_view_convert_widget_to_bin_window_coords:
13151  * @tree_view: a #GtkTreeView
13152  * @wx: X coordinate relative to the widget
13153  * @wy: Y coordinate relative to the widget
13154  * @bx: return location for bin_window X coordinate
13155  * @by: return location for bin_window Y coordinate
13156  *
13157  * Converts widget coordinates to coordinates for the bin_window
13158  * (see gtk_tree_view_get_bin_window()).
13159  *
13160  * Since: 2.12
13161  **/
13162 void
13163 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13164                                                    gint         wx,
13165                                                    gint         wy,
13166                                                    gint        *bx,
13167                                                    gint        *by)
13168 {
13169   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13170
13171   if (bx)
13172     *bx = wx + tree_view->priv->hadjustment->value;
13173   if (by)
13174     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13175 }
13176
13177 /**
13178  * gtk_tree_view_convert_bin_window_to_widget_coords:
13179  * @tree_view: a #GtkTreeView
13180  * @bx: bin_window X coordinate
13181  * @by: bin_window Y coordinate
13182  * @wx: return location for widget X coordinate
13183  * @wy: return location for widget Y coordinate
13184  *
13185  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13186  * to widget relative coordinates.
13187  *
13188  * Since: 2.12
13189  **/
13190 void
13191 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13192                                                    gint         bx,
13193                                                    gint         by,
13194                                                    gint        *wx,
13195                                                    gint        *wy)
13196 {
13197   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13198
13199   if (wx)
13200     *wx = bx - tree_view->priv->hadjustment->value;
13201   if (wy)
13202     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13203 }
13204
13205 /**
13206  * gtk_tree_view_convert_tree_to_bin_window_coords:
13207  * @tree_view: a #GtkTreeView
13208  * @tx: tree X coordinate
13209  * @ty: tree Y coordinate
13210  * @bx: return location for X coordinate relative to bin_window
13211  * @by: return location for Y coordinate relative to bin_window
13212  *
13213  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13214  * to bin_window coordinates.
13215  *
13216  * Since: 2.12
13217  **/
13218 void
13219 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13220                                                  gint         tx,
13221                                                  gint         ty,
13222                                                  gint        *bx,
13223                                                  gint        *by)
13224 {
13225   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13226
13227   if (bx)
13228     *bx = tx;
13229   if (by)
13230     *by = ty - tree_view->priv->dy;
13231 }
13232
13233 /**
13234  * gtk_tree_view_convert_bin_window_to_tree_coords:
13235  * @tree_view: a #GtkTreeView
13236  * @bx: X coordinate relative to bin_window
13237  * @by: Y coordinate relative to bin_window
13238  * @tx: return location for tree X coordinate
13239  * @ty: return location for tree Y coordinate
13240  *
13241  * Converts bin_window coordinates to coordinates for the
13242  * tree (the full scrollable area of the tree).
13243  *
13244  * Since: 2.12
13245  **/
13246 void
13247 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13248                                                  gint         bx,
13249                                                  gint         by,
13250                                                  gint        *tx,
13251                                                  gint        *ty)
13252 {
13253   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13254
13255   if (tx)
13256     *tx = bx;
13257   if (ty)
13258     *ty = by + tree_view->priv->dy;
13259 }
13260
13261
13262
13263 /**
13264  * gtk_tree_view_get_visible_range:
13265  * @tree_view: A #GtkTreeView
13266  * @start_path: Return location for start of region, or %NULL.
13267  * @end_path: Return location for end of region, or %NULL.
13268  *
13269  * Sets @start_path and @end_path to be the first and last visible path.
13270  * Note that there may be invisible paths in between.
13271  *
13272  * The paths should be freed with gtk_tree_path_free() after use.
13273  *
13274  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13275  *
13276  * Since: 2.8
13277  **/
13278 gboolean
13279 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13280                                  GtkTreePath **start_path,
13281                                  GtkTreePath **end_path)
13282 {
13283   GtkRBTree *tree;
13284   GtkRBNode *node;
13285   gboolean retval;
13286
13287   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13288
13289   if (!tree_view->priv->tree)
13290     return FALSE;
13291
13292   retval = TRUE;
13293
13294   if (start_path)
13295     {
13296       _gtk_rbtree_find_offset (tree_view->priv->tree,
13297                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13298                                &tree, &node);
13299       if (node)
13300         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13301       else
13302         retval = FALSE;
13303     }
13304
13305   if (end_path)
13306     {
13307       gint y;
13308
13309       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13310         y = tree_view->priv->height - 1;
13311       else
13312         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13313
13314       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13315       if (node)
13316         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13317       else
13318         retval = FALSE;
13319     }
13320
13321   return retval;
13322 }
13323
13324 static void
13325 unset_reorderable (GtkTreeView *tree_view)
13326 {
13327   if (tree_view->priv->reorderable)
13328     {
13329       tree_view->priv->reorderable = FALSE;
13330       g_object_notify (G_OBJECT (tree_view), "reorderable");
13331     }
13332 }
13333
13334 /**
13335  * gtk_tree_view_enable_model_drag_source:
13336  * @tree_view: a #GtkTreeView
13337  * @start_button_mask: Mask of allowed buttons to start drag
13338  * @targets: the table of targets that the drag will support
13339  * @n_targets: the number of items in @targets
13340  * @actions: the bitmask of possible actions for a drag from this
13341  *    widget
13342  *
13343  * Turns @tree_view into a drag source for automatic DND. Calling this
13344  * method sets #GtkTreeView:reorderable to %FALSE.
13345  **/
13346 void
13347 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13348                                         GdkModifierType           start_button_mask,
13349                                         const GtkTargetEntry     *targets,
13350                                         gint                      n_targets,
13351                                         GdkDragAction             actions)
13352 {
13353   TreeViewDragInfo *di;
13354
13355   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13356
13357   gtk_drag_source_set (GTK_WIDGET (tree_view),
13358                        0,
13359                        targets,
13360                        n_targets,
13361                        actions);
13362
13363   di = ensure_info (tree_view);
13364
13365   di->start_button_mask = start_button_mask;
13366   di->source_actions = actions;
13367   di->source_set = TRUE;
13368
13369   unset_reorderable (tree_view);
13370 }
13371
13372 /**
13373  * gtk_tree_view_enable_model_drag_dest:
13374  * @tree_view: a #GtkTreeView
13375  * @targets: the table of targets that the drag will support
13376  * @n_targets: the number of items in @targets
13377  * @actions: the bitmask of possible actions for a drag from this
13378  *    widget
13379  *
13380  * Turns @tree_view into a drop destination for automatic DND. Calling
13381  * this method sets #GtkTreeView:reorderable to %FALSE.
13382  **/
13383 void
13384 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13385                                       const GtkTargetEntry     *targets,
13386                                       gint                      n_targets,
13387                                       GdkDragAction             actions)
13388 {
13389   TreeViewDragInfo *di;
13390
13391   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13392
13393   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13394                      0,
13395                      targets,
13396                      n_targets,
13397                      actions);
13398
13399   di = ensure_info (tree_view);
13400   di->dest_set = TRUE;
13401
13402   unset_reorderable (tree_view);
13403 }
13404
13405 /**
13406  * gtk_tree_view_unset_rows_drag_source:
13407  * @tree_view: a #GtkTreeView
13408  *
13409  * Undoes the effect of
13410  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13411  * #GtkTreeView:reorderable to %FALSE.
13412  **/
13413 void
13414 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13415 {
13416   TreeViewDragInfo *di;
13417
13418   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13419
13420   di = get_info (tree_view);
13421
13422   if (di)
13423     {
13424       if (di->source_set)
13425         {
13426           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13427           di->source_set = FALSE;
13428         }
13429
13430       if (!di->dest_set && !di->source_set)
13431         remove_info (tree_view);
13432     }
13433
13434   unset_reorderable (tree_view);
13435 }
13436
13437 /**
13438  * gtk_tree_view_unset_rows_drag_dest:
13439  * @tree_view: a #GtkTreeView
13440  *
13441  * Undoes the effect of
13442  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13443  * #GtkTreeView:reorderable to %FALSE.
13444  **/
13445 void
13446 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13447 {
13448   TreeViewDragInfo *di;
13449
13450   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13451
13452   di = get_info (tree_view);
13453
13454   if (di)
13455     {
13456       if (di->dest_set)
13457         {
13458           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13459           di->dest_set = FALSE;
13460         }
13461
13462       if (!di->dest_set && !di->source_set)
13463         remove_info (tree_view);
13464     }
13465
13466   unset_reorderable (tree_view);
13467 }
13468
13469 /**
13470  * gtk_tree_view_set_drag_dest_row:
13471  * @tree_view: a #GtkTreeView
13472  * @path: The path of the row to highlight, or %NULL.
13473  * @pos: Specifies whether to drop before, after or into the row
13474  *
13475  * Sets the row that is highlighted for feedback.
13476  **/
13477 void
13478 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13479                                  GtkTreePath            *path,
13480                                  GtkTreeViewDropPosition pos)
13481 {
13482   GtkTreePath *current_dest;
13483
13484   /* Note; this function is exported to allow a custom DND
13485    * implementation, so it can't touch TreeViewDragInfo
13486    */
13487
13488   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13489
13490   current_dest = NULL;
13491
13492   if (tree_view->priv->drag_dest_row)
13493     {
13494       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13495       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13496     }
13497
13498   /* special case a drop on an empty model */
13499   tree_view->priv->empty_view_drop = 0;
13500
13501   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13502       && gtk_tree_path_get_depth (path) == 1
13503       && gtk_tree_path_get_indices (path)[0] == 0)
13504     {
13505       gint n_children;
13506
13507       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13508                                                    NULL);
13509
13510       if (!n_children)
13511         tree_view->priv->empty_view_drop = 1;
13512     }
13513
13514   tree_view->priv->drag_dest_pos = pos;
13515
13516   if (path)
13517     {
13518       tree_view->priv->drag_dest_row =
13519         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13520       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13521     }
13522   else
13523     tree_view->priv->drag_dest_row = NULL;
13524
13525   if (current_dest)
13526     {
13527       GtkRBTree *tree, *new_tree;
13528       GtkRBNode *node, *new_node;
13529
13530       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13531       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13532
13533       if (tree && node)
13534         {
13535           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13536           if (new_tree && new_node)
13537             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13538
13539           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13540           if (new_tree && new_node)
13541             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13542         }
13543       gtk_tree_path_free (current_dest);
13544     }
13545 }
13546
13547 /**
13548  * gtk_tree_view_get_drag_dest_row:
13549  * @tree_view: a #GtkTreeView
13550  * @path: Return location for the path of the highlighted row, or %NULL.
13551  * @pos: Return location for the drop position, or %NULL
13552  *
13553  * Gets information about the row that is highlighted for feedback.
13554  **/
13555 void
13556 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13557                                  GtkTreePath             **path,
13558                                  GtkTreeViewDropPosition  *pos)
13559 {
13560   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13561
13562   if (path)
13563     {
13564       if (tree_view->priv->drag_dest_row)
13565         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13566       else
13567         {
13568           if (tree_view->priv->empty_view_drop)
13569             *path = gtk_tree_path_new_from_indices (0, -1);
13570           else
13571             *path = NULL;
13572         }
13573     }
13574
13575   if (pos)
13576     *pos = tree_view->priv->drag_dest_pos;
13577 }
13578
13579 /**
13580  * gtk_tree_view_get_dest_row_at_pos:
13581  * @tree_view: a #GtkTreeView
13582  * @drag_x: the position to determine the destination row for
13583  * @drag_y: the position to determine the destination row for
13584  * @path: Return location for the path of the highlighted row, or %NULL.
13585  * @pos: Return location for the drop position, or %NULL
13586  *
13587  * Determines the destination row for a given position.  @drag_x and
13588  * @drag_y are expected to be in widget coordinates.  This function is only
13589  * meaningful if @tree_view is realized.  Therefore this function will always
13590  * return %FALSE if @tree_view is not realized or does not have a model.
13591  *
13592  * Return value: whether there is a row at the given position, %TRUE if this
13593  * is indeed the case.
13594  **/
13595 gboolean
13596 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13597                                    gint                     drag_x,
13598                                    gint                     drag_y,
13599                                    GtkTreePath            **path,
13600                                    GtkTreeViewDropPosition *pos)
13601 {
13602   gint cell_y;
13603   gint bin_x, bin_y;
13604   gdouble offset_into_row;
13605   gdouble third;
13606   GdkRectangle cell;
13607   GtkTreeViewColumn *column = NULL;
13608   GtkTreePath *tmp_path = NULL;
13609
13610   /* Note; this function is exported to allow a custom DND
13611    * implementation, so it can't touch TreeViewDragInfo
13612    */
13613
13614   g_return_val_if_fail (tree_view != NULL, FALSE);
13615   g_return_val_if_fail (drag_x >= 0, FALSE);
13616   g_return_val_if_fail (drag_y >= 0, FALSE);
13617
13618   if (path)
13619     *path = NULL;
13620
13621   if (tree_view->priv->bin_window == NULL)
13622     return FALSE;
13623
13624   if (tree_view->priv->tree == NULL)
13625     return FALSE;
13626
13627   /* If in the top third of a row, we drop before that row; if
13628    * in the bottom third, drop after that row; if in the middle,
13629    * and the row has children, drop into the row.
13630    */
13631   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13632                                                      &bin_x, &bin_y);
13633
13634   if (!gtk_tree_view_get_path_at_pos (tree_view,
13635                                       bin_x,
13636                                       bin_y,
13637                                       &tmp_path,
13638                                       &column,
13639                                       NULL,
13640                                       &cell_y))
13641     return FALSE;
13642
13643   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13644                                      &cell);
13645
13646   offset_into_row = cell_y;
13647
13648   if (path)
13649     *path = tmp_path;
13650   else
13651     gtk_tree_path_free (tmp_path);
13652
13653   tmp_path = NULL;
13654
13655   third = cell.height / 3.0;
13656
13657   if (pos)
13658     {
13659       if (offset_into_row < third)
13660         {
13661           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13662         }
13663       else if (offset_into_row < (cell.height / 2.0))
13664         {
13665           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13666         }
13667       else if (offset_into_row < third * 2.0)
13668         {
13669           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13670         }
13671       else
13672         {
13673           *pos = GTK_TREE_VIEW_DROP_AFTER;
13674         }
13675     }
13676
13677   return TRUE;
13678 }
13679
13680
13681
13682 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13683 /**
13684  * gtk_tree_view_create_row_drag_icon:
13685  * @tree_view: a #GtkTreeView
13686  * @path: a #GtkTreePath in @tree_view
13687  *
13688  * Creates a #GdkPixmap representation of the row at @path.
13689  * This image is used for a drag icon.
13690  *
13691  * Return value: a newly-allocated pixmap of the drag icon.
13692  **/
13693 GdkPixmap *
13694 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13695                                     GtkTreePath  *path)
13696 {
13697   GtkTreeIter   iter;
13698   GtkRBTree    *tree;
13699   GtkRBNode    *node;
13700   gint cell_offset;
13701   GList *list;
13702   GdkRectangle background_area;
13703   GdkRectangle expose_area;
13704   GtkWidget *widget;
13705   gint depth;
13706   /* start drawing inside the black outline */
13707   gint x = 1, y = 1;
13708   GdkDrawable *drawable;
13709   gint bin_window_width;
13710   gboolean is_separator = FALSE;
13711   gboolean rtl;
13712
13713   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13714   g_return_val_if_fail (path != NULL, NULL);
13715
13716   widget = GTK_WIDGET (tree_view);
13717
13718   if (!GTK_WIDGET_REALIZED (tree_view))
13719     return NULL;
13720
13721   depth = gtk_tree_path_get_depth (path);
13722
13723   _gtk_tree_view_find_node (tree_view,
13724                             path,
13725                             &tree,
13726                             &node);
13727
13728   if (tree == NULL)
13729     return NULL;
13730
13731   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13732                                 &iter,
13733                                 path))
13734     return NULL;
13735
13736   is_separator = row_is_separator (tree_view, &iter, NULL);
13737
13738   cell_offset = x;
13739
13740   background_area.y = y;
13741   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13742
13743   gdk_drawable_get_size (tree_view->priv->bin_window,
13744                          &bin_window_width, NULL);
13745
13746   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13747                              bin_window_width + 2,
13748                              background_area.height + 2,
13749                              -1);
13750
13751   expose_area.x = 0;
13752   expose_area.y = 0;
13753   expose_area.width = bin_window_width + 2;
13754   expose_area.height = background_area.height + 2;
13755
13756   gdk_draw_rectangle (drawable,
13757                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
13758                       TRUE,
13759                       0, 0,
13760                       bin_window_width + 2,
13761                       background_area.height + 2);
13762
13763   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13764
13765   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13766       list;
13767       list = (rtl ? list->prev : list->next))
13768     {
13769       GtkTreeViewColumn *column = list->data;
13770       GdkRectangle cell_area;
13771       gint vertical_separator;
13772
13773       if (!column->visible)
13774         continue;
13775
13776       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13777                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13778                                                node->children?TRUE:FALSE);
13779
13780       background_area.x = cell_offset;
13781       background_area.width = column->width;
13782
13783       gtk_widget_style_get (widget,
13784                             "vertical-separator", &vertical_separator,
13785                             NULL);
13786
13787       cell_area = background_area;
13788
13789       cell_area.y += vertical_separator / 2;
13790       cell_area.height -= vertical_separator;
13791
13792       if (gtk_tree_view_is_expander_column (tree_view, column))
13793         {
13794           if (!rtl)
13795             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13796           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13797
13798           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13799             {
13800               if (!rtl)
13801                 cell_area.x += depth * tree_view->priv->expander_size;
13802               cell_area.width -= depth * tree_view->priv->expander_size;
13803             }
13804         }
13805
13806       if (gtk_tree_view_column_cell_is_visible (column))
13807         {
13808           if (is_separator)
13809             gtk_paint_hline (widget->style,
13810                              drawable,
13811                              GTK_STATE_NORMAL,
13812                              &cell_area,
13813                              widget,
13814                              NULL,
13815                              cell_area.x,
13816                              cell_area.x + cell_area.width,
13817                              cell_area.y + cell_area.height / 2);
13818           else
13819             _gtk_tree_view_column_cell_render (column,
13820                                                drawable,
13821                                                &background_area,
13822                                                &cell_area,
13823                                                &expose_area,
13824                                                0);
13825         }
13826       cell_offset += column->width;
13827     }
13828
13829   gdk_draw_rectangle (drawable,
13830                       widget->style->black_gc,
13831                       FALSE,
13832                       0, 0,
13833                       bin_window_width + 1,
13834                       background_area.height + 1);
13835
13836   return drawable;
13837 }
13838
13839
13840 /**
13841  * gtk_tree_view_set_destroy_count_func:
13842  * @tree_view: A #GtkTreeView
13843  * @func: Function to be called when a view row is destroyed, or %NULL
13844  * @data: User data to be passed to @func, or %NULL
13845  * @destroy: Destroy notifier for @data, or %NULL
13846  *
13847  * This function should almost never be used.  It is meant for private use by
13848  * ATK for determining the number of visible children that are removed when the
13849  * user collapses a row, or a row is deleted.
13850  **/
13851 void
13852 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13853                                       GtkTreeDestroyCountFunc  func,
13854                                       gpointer                 data,
13855                                       GDestroyNotify           destroy)
13856 {
13857   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13858
13859   if (tree_view->priv->destroy_count_destroy)
13860     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13861
13862   tree_view->priv->destroy_count_func = func;
13863   tree_view->priv->destroy_count_data = data;
13864   tree_view->priv->destroy_count_destroy = destroy;
13865 }
13866
13867
13868 /*
13869  * Interactive search
13870  */
13871
13872 /**
13873  * gtk_tree_view_set_enable_search:
13874  * @tree_view: A #GtkTreeView
13875  * @enable_search: %TRUE, if the user can search interactively
13876  *
13877  * If @enable_search is set, then the user can type in text to search through
13878  * the tree interactively (this is sometimes called "typeahead find").
13879  *
13880  * Note that even if this is %FALSE, the user can still initiate a search
13881  * using the "start-interactive-search" key binding.
13882  */
13883 void
13884 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13885                                  gboolean     enable_search)
13886 {
13887   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13888
13889   enable_search = !!enable_search;
13890
13891   if (tree_view->priv->enable_search != enable_search)
13892     {
13893        tree_view->priv->enable_search = enable_search;
13894        g_object_notify (G_OBJECT (tree_view), "enable-search");
13895     }
13896 }
13897
13898 /**
13899  * gtk_tree_view_get_enable_search:
13900  * @tree_view: A #GtkTreeView
13901  *
13902  * Returns whether or not the tree allows to start interactive searching
13903  * by typing in text.
13904  *
13905  * Return value: whether or not to let the user search interactively
13906  */
13907 gboolean
13908 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13909 {
13910   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13911
13912   return tree_view->priv->enable_search;
13913 }
13914
13915
13916 /**
13917  * gtk_tree_view_get_search_column:
13918  * @tree_view: A #GtkTreeView
13919  *
13920  * Gets the column searched on by the interactive search code.
13921  *
13922  * Return value: the column the interactive search code searches in.
13923  */
13924 gint
13925 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13926 {
13927   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13928
13929   return (tree_view->priv->search_column);
13930 }
13931
13932 /**
13933  * gtk_tree_view_set_search_column:
13934  * @tree_view: A #GtkTreeView
13935  * @column: the column of the model to search in, or -1 to disable searching
13936  *
13937  * Sets @column as the column where the interactive search code should
13938  * search in for the current model.
13939  *
13940  * If the search column is set, users can use the "start-interactive-search"
13941  * key binding to bring up search popup. The enable-search property controls
13942  * whether simply typing text will also start an interactive search.
13943  *
13944  * Note that @column refers to a column of the current model. The search
13945  * column is reset to -1 when the model is changed.
13946  */
13947 void
13948 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13949                                  gint         column)
13950 {
13951   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13952   g_return_if_fail (column >= -1);
13953
13954   if (tree_view->priv->search_column == column)
13955     return;
13956
13957   tree_view->priv->search_column = column;
13958   g_object_notify (G_OBJECT (tree_view), "search-column");
13959 }
13960
13961 /**
13962  * gtk_tree_view_get_search_equal_func:
13963  * @tree_view: A #GtkTreeView
13964  *
13965  * Returns the compare function currently in use.
13966  *
13967  * Return value: the currently used compare function for the search code.
13968  */
13969
13970 GtkTreeViewSearchEqualFunc
13971 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13972 {
13973   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13974
13975   return tree_view->priv->search_equal_func;
13976 }
13977
13978 /**
13979  * gtk_tree_view_set_search_equal_func:
13980  * @tree_view: A #GtkTreeView
13981  * @search_equal_func: the compare function to use during the search
13982  * @search_user_data: user data to pass to @search_equal_func, or %NULL
13983  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
13984  *
13985  * Sets the compare function for the interactive search capabilities; note
13986  * that somewhat like strcmp() returning 0 for equality
13987  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13988  **/
13989 void
13990 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
13991                                      GtkTreeViewSearchEqualFunc  search_equal_func,
13992                                      gpointer                    search_user_data,
13993                                      GDestroyNotify              search_destroy)
13994 {
13995   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13996   g_return_if_fail (search_equal_func != NULL);
13997
13998   if (tree_view->priv->search_destroy)
13999     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14000
14001   tree_view->priv->search_equal_func = search_equal_func;
14002   tree_view->priv->search_user_data = search_user_data;
14003   tree_view->priv->search_destroy = search_destroy;
14004   if (tree_view->priv->search_equal_func == NULL)
14005     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14006 }
14007
14008 /**
14009  * gtk_tree_view_get_search_entry:
14010  * @tree_view: A #GtkTreeView
14011  *
14012  * Returns the #GtkEntry which is currently in use as interactive search
14013  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14014  * will be returned.
14015  *
14016  * Return value: the entry currently in use as search entry.
14017  *
14018  * Since: 2.10
14019  */
14020 GtkEntry *
14021 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14022 {
14023   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14024
14025   if (tree_view->priv->search_custom_entry_set)
14026     return GTK_ENTRY (tree_view->priv->search_entry);
14027
14028   return NULL;
14029 }
14030
14031 /**
14032  * gtk_tree_view_set_search_entry:
14033  * @tree_view: A #GtkTreeView
14034  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14035  *
14036  * Sets the entry which the interactive search code will use for this
14037  * @tree_view.  This is useful when you want to provide a search entry
14038  * in our interface at all time at a fixed position.  Passing %NULL for
14039  * @entry will make the interactive search code use the built-in popup
14040  * entry again.
14041  *
14042  * Since: 2.10
14043  */
14044 void
14045 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14046                                 GtkEntry    *entry)
14047 {
14048   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14049   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14050
14051   if (tree_view->priv->search_custom_entry_set)
14052     {
14053       if (tree_view->priv->search_entry_changed_id)
14054         {
14055           g_signal_handler_disconnect (tree_view->priv->search_entry,
14056                                        tree_view->priv->search_entry_changed_id);
14057           tree_view->priv->search_entry_changed_id = 0;
14058         }
14059       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14060                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14061                                             tree_view);
14062
14063       g_object_unref (tree_view->priv->search_entry);
14064     }
14065   else if (tree_view->priv->search_window)
14066     {
14067       gtk_widget_destroy (tree_view->priv->search_window);
14068
14069       tree_view->priv->search_window = NULL;
14070     }
14071
14072   if (entry)
14073     {
14074       tree_view->priv->search_entry = g_object_ref (entry);
14075       tree_view->priv->search_custom_entry_set = TRUE;
14076
14077       if (tree_view->priv->search_entry_changed_id == 0)
14078         {
14079           tree_view->priv->search_entry_changed_id =
14080             g_signal_connect (tree_view->priv->search_entry, "changed",
14081                               G_CALLBACK (gtk_tree_view_search_init),
14082                               tree_view);
14083         }
14084
14085         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14086                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14087                           tree_view);
14088
14089         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14090     }
14091   else
14092     {
14093       tree_view->priv->search_entry = NULL;
14094       tree_view->priv->search_custom_entry_set = FALSE;
14095     }
14096 }
14097
14098 /**
14099  * gtk_tree_view_set_search_position_func:
14100  * @tree_view: A #GtkTreeView
14101  * @func: the function to use to position the search dialog, or %NULL
14102  *    to use the default search position function
14103  * @data: user data to pass to @func, or %NULL
14104  * @destroy: Destroy notifier for @data, or %NULL
14105  *
14106  * Sets the function to use when positioning the search dialog.
14107  *
14108  * Since: 2.10
14109  **/
14110 void
14111 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14112                                         GtkTreeViewSearchPositionFunc  func,
14113                                         gpointer                       user_data,
14114                                         GDestroyNotify                 destroy)
14115 {
14116   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14117
14118   if (tree_view->priv->search_position_destroy)
14119     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14120
14121   tree_view->priv->search_position_func = func;
14122   tree_view->priv->search_position_user_data = user_data;
14123   tree_view->priv->search_position_destroy = destroy;
14124   if (tree_view->priv->search_position_func == NULL)
14125     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14126 }
14127
14128 /**
14129  * gtk_tree_view_get_search_position_func:
14130  * @tree_view: A #GtkTreeView
14131  *
14132  * Returns the positioning function currently in use.
14133  *
14134  * Return value: the currently used function for positioning the search dialog.
14135  *
14136  * Since: 2.10
14137  */
14138 GtkTreeViewSearchPositionFunc
14139 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14140 {
14141   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14142
14143   return tree_view->priv->search_position_func;
14144 }
14145
14146
14147 static void
14148 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14149                                   GtkTreeView *tree_view)
14150 {
14151   if (tree_view->priv->disable_popdown)
14152     return;
14153
14154   if (tree_view->priv->search_entry_changed_id)
14155     {
14156       g_signal_handler_disconnect (tree_view->priv->search_entry,
14157                                    tree_view->priv->search_entry_changed_id);
14158       tree_view->priv->search_entry_changed_id = 0;
14159     }
14160   if (tree_view->priv->typeselect_flush_timeout)
14161     {
14162       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14163       tree_view->priv->typeselect_flush_timeout = 0;
14164     }
14165
14166   if (GTK_WIDGET_VISIBLE (search_dialog))
14167     {
14168       /* send focus-in event */
14169       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
14170       gtk_widget_hide (search_dialog);
14171       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14172       send_focus_change (GTK_WIDGET (tree_view), TRUE);
14173     }
14174 }
14175
14176 static void
14177 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14178                                     GtkWidget   *search_dialog,
14179                                     gpointer     user_data)
14180 {
14181   gint x, y;
14182   gint tree_x, tree_y;
14183   gint tree_width, tree_height;
14184   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14185   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14186   GtkRequisition requisition;
14187   gint monitor_num;
14188   GdkRectangle monitor;
14189
14190   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14191   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14192
14193   gtk_widget_realize (search_dialog);
14194
14195   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14196   gdk_drawable_get_size (tree_window,
14197                          &tree_width,
14198                          &tree_height);
14199   gtk_widget_size_request (search_dialog, &requisition);
14200
14201   if (tree_x + tree_width > gdk_screen_get_width (screen))
14202     x = gdk_screen_get_width (screen) - requisition.width;
14203   else if (tree_x + tree_width - requisition.width < 0)
14204     x = 0;
14205   else
14206     x = tree_x + tree_width - requisition.width;
14207
14208   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14209     y = gdk_screen_get_height (screen) - requisition.height;
14210   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14211     y = 0;
14212   else
14213     y = tree_y + tree_height;
14214
14215   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14216 }
14217
14218 static void
14219 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14220                                       GtkMenu  *menu,
14221                                       gpointer  data)
14222 {
14223   GtkTreeView *tree_view = (GtkTreeView *)data;
14224
14225   tree_view->priv->disable_popdown = 1;
14226   g_signal_connect (menu, "hide",
14227                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14228 }
14229
14230 /* Because we're visible but offscreen, we just set a flag in the preedit
14231  * callback.
14232  */
14233 static void
14234 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14235                                       GtkTreeView  *tree_view)
14236 {
14237   tree_view->priv->imcontext_changed = 1;
14238   if (tree_view->priv->typeselect_flush_timeout)
14239     {
14240       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14241       tree_view->priv->typeselect_flush_timeout =
14242         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14243                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14244                        tree_view);
14245     }
14246
14247 }
14248
14249 static void
14250 gtk_tree_view_search_activate (GtkEntry    *entry,
14251                                GtkTreeView *tree_view)
14252 {
14253   GtkTreePath *path;
14254   GtkRBNode *node;
14255   GtkRBTree *tree;
14256
14257   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14258                                     tree_view);
14259
14260   /* If we have a row selected and it's the cursor row, we activate
14261    * the row XXX */
14262   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14263     {
14264       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14265
14266       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14267
14268       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14269         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14270
14271       gtk_tree_path_free (path);
14272     }
14273 }
14274
14275 static gboolean
14276 gtk_tree_view_real_search_enable_popdown (gpointer data)
14277 {
14278   GtkTreeView *tree_view = (GtkTreeView *)data;
14279
14280   tree_view->priv->disable_popdown = 0;
14281
14282   return FALSE;
14283 }
14284
14285 static void
14286 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14287                                      gpointer   data)
14288 {
14289   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14290 }
14291
14292 static gboolean
14293 gtk_tree_view_search_delete_event (GtkWidget *widget,
14294                                    GdkEventAny *event,
14295                                    GtkTreeView *tree_view)
14296 {
14297   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14298
14299   gtk_tree_view_search_dialog_hide (widget, tree_view);
14300
14301   return TRUE;
14302 }
14303
14304 static gboolean
14305 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14306                                          GdkEventButton *event,
14307                                          GtkTreeView *tree_view)
14308 {
14309   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14310
14311   gtk_tree_view_search_dialog_hide (widget, tree_view);
14312
14313   if (event->window == tree_view->priv->bin_window)
14314     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14315
14316   return TRUE;
14317 }
14318
14319 static gboolean
14320 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14321                                    GdkEventScroll *event,
14322                                    GtkTreeView *tree_view)
14323 {
14324   gboolean retval = FALSE;
14325
14326   if (event->direction == GDK_SCROLL_UP)
14327     {
14328       gtk_tree_view_search_move (widget, tree_view, TRUE);
14329       retval = TRUE;
14330     }
14331   else if (event->direction == GDK_SCROLL_DOWN)
14332     {
14333       gtk_tree_view_search_move (widget, tree_view, FALSE);
14334       retval = TRUE;
14335     }
14336
14337   /* renew the flush timeout */
14338   if (retval && tree_view->priv->typeselect_flush_timeout
14339       && !tree_view->priv->search_custom_entry_set)
14340     {
14341       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14342       tree_view->priv->typeselect_flush_timeout =
14343         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14344                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14345                        tree_view);
14346     }
14347
14348   return retval;
14349 }
14350
14351 static gboolean
14352 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14353                                       GdkEventKey *event,
14354                                       GtkTreeView *tree_view)
14355 {
14356   gboolean retval = FALSE;
14357
14358   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14359   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14360
14361   /* close window and cancel the search */
14362   if (!tree_view->priv->search_custom_entry_set
14363       && (event->keyval == GDK_Escape ||
14364           event->keyval == GDK_Tab ||
14365             event->keyval == GDK_KP_Tab ||
14366             event->keyval == GDK_ISO_Left_Tab))
14367     {
14368       gtk_tree_view_search_dialog_hide (widget, tree_view);
14369       return TRUE;
14370     }
14371
14372   /* select previous matching iter */
14373   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14374     {
14375       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14376         gtk_widget_error_bell (widget);
14377
14378       retval = TRUE;
14379     }
14380
14381   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14382       && (event->keyval == GDK_g || event->keyval == GDK_G))
14383     {
14384       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14385         gtk_widget_error_bell (widget);
14386
14387       retval = TRUE;
14388     }
14389
14390   /* select next matching iter */
14391   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14392     {
14393       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14394         gtk_widget_error_bell (widget);
14395
14396       retval = TRUE;
14397     }
14398
14399   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14400       && (event->keyval == GDK_g || event->keyval == GDK_G))
14401     {
14402       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14403         gtk_widget_error_bell (widget);
14404
14405       retval = TRUE;
14406     }
14407
14408   /* renew the flush timeout */
14409   if (retval && tree_view->priv->typeselect_flush_timeout
14410       && !tree_view->priv->search_custom_entry_set)
14411     {
14412       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14413       tree_view->priv->typeselect_flush_timeout =
14414         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14415                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14416                        tree_view);
14417     }
14418
14419   return retval;
14420 }
14421
14422 /*  this function returns FALSE if there is a search string but
14423  *  nothing was found, and TRUE otherwise.
14424  */
14425 static gboolean
14426 gtk_tree_view_search_move (GtkWidget   *window,
14427                            GtkTreeView *tree_view,
14428                            gboolean     up)
14429 {
14430   gboolean ret;
14431   gint len;
14432   gint count = 0;
14433   const gchar *text;
14434   GtkTreeIter iter;
14435   GtkTreeModel *model;
14436   GtkTreeSelection *selection;
14437
14438   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14439
14440   g_return_val_if_fail (text != NULL, FALSE);
14441
14442   len = strlen (text);
14443
14444   if (up && tree_view->priv->selected_iter == 1)
14445     return strlen (text) < 1;
14446
14447   len = strlen (text);
14448
14449   if (len < 1)
14450     return TRUE;
14451
14452   model = gtk_tree_view_get_model (tree_view);
14453   selection = gtk_tree_view_get_selection (tree_view);
14454
14455   /* search */
14456   gtk_tree_selection_unselect_all (selection);
14457   if (!gtk_tree_model_get_iter_first (model, &iter))
14458     return TRUE;
14459
14460   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14461                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14462
14463   if (ret)
14464     {
14465       /* found */
14466       tree_view->priv->selected_iter += up?(-1):(1);
14467       return TRUE;
14468     }
14469   else
14470     {
14471       /* return to old iter */
14472       count = 0;
14473       gtk_tree_model_get_iter_first (model, &iter);
14474       gtk_tree_view_search_iter (model, selection,
14475                                  &iter, text,
14476                                  &count, tree_view->priv->selected_iter);
14477       return FALSE;
14478     }
14479 }
14480
14481 static gboolean
14482 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14483                                  gint          column,
14484                                  const gchar  *key,
14485                                  GtkTreeIter  *iter,
14486                                  gpointer      search_data)
14487 {
14488   gboolean retval = TRUE;
14489   const gchar *str;
14490   gchar *normalized_string;
14491   gchar *normalized_key;
14492   gchar *case_normalized_string = NULL;
14493   gchar *case_normalized_key = NULL;
14494   GValue value = {0,};
14495   GValue transformed = {0,};
14496
14497   gtk_tree_model_get_value (model, iter, column, &value);
14498
14499   g_value_init (&transformed, G_TYPE_STRING);
14500
14501   if (!g_value_transform (&value, &transformed))
14502     {
14503       g_value_unset (&value);
14504       return TRUE;
14505     }
14506
14507   g_value_unset (&value);
14508
14509   str = g_value_get_string (&transformed);
14510   if (!str)
14511     {
14512       g_value_unset (&transformed);
14513       return TRUE;
14514     }
14515
14516   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14517   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14518
14519   if (normalized_string && normalized_key)
14520     {
14521       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14522       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14523
14524       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14525         retval = FALSE;
14526     }
14527
14528   g_value_unset (&transformed);
14529   g_free (normalized_key);
14530   g_free (normalized_string);
14531   g_free (case_normalized_key);
14532   g_free (case_normalized_string);
14533
14534   return retval;
14535 }
14536
14537 static gboolean
14538 gtk_tree_view_search_iter (GtkTreeModel     *model,
14539                            GtkTreeSelection *selection,
14540                            GtkTreeIter      *iter,
14541                            const gchar      *text,
14542                            gint             *count,
14543                            gint              n)
14544 {
14545   GtkRBTree *tree = NULL;
14546   GtkRBNode *node = NULL;
14547   GtkTreePath *path;
14548
14549   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14550
14551   path = gtk_tree_model_get_path (model, iter);
14552   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14553
14554   do
14555     {
14556       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14557         {
14558           (*count)++;
14559           if (*count == n)
14560             {
14561               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14562                                             TRUE, 0.5, 0.0);
14563               gtk_tree_selection_select_iter (selection, iter);
14564               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14565
14566               if (path)
14567                 gtk_tree_path_free (path);
14568
14569               return TRUE;
14570             }
14571         }
14572
14573       if (node->children)
14574         {
14575           gboolean has_child;
14576           GtkTreeIter tmp;
14577
14578           tree = node->children;
14579           node = tree->root;
14580
14581           while (node->left != tree->nil)
14582             node = node->left;
14583
14584           tmp = *iter;
14585           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14586           gtk_tree_path_down (path);
14587
14588           /* sanity check */
14589           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14590         }
14591       else
14592         {
14593           gboolean done = FALSE;
14594
14595           do
14596             {
14597               node = _gtk_rbtree_next (tree, node);
14598
14599               if (node)
14600                 {
14601                   gboolean has_next;
14602
14603                   has_next = gtk_tree_model_iter_next (model, iter);
14604
14605                   done = TRUE;
14606                   gtk_tree_path_next (path);
14607
14608                   /* sanity check */
14609                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14610                 }
14611               else
14612                 {
14613                   gboolean has_parent;
14614                   GtkTreeIter tmp_iter = *iter;
14615
14616                   node = tree->parent_node;
14617                   tree = tree->parent_tree;
14618
14619                   if (!tree)
14620                     {
14621                       if (path)
14622                         gtk_tree_path_free (path);
14623
14624                       /* we've run out of tree, done with this func */
14625                       return FALSE;
14626                     }
14627
14628                   has_parent = gtk_tree_model_iter_parent (model,
14629                                                            iter,
14630                                                            &tmp_iter);
14631                   gtk_tree_path_up (path);
14632
14633                   /* sanity check */
14634                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14635                 }
14636             }
14637           while (!done);
14638         }
14639     }
14640   while (1);
14641
14642   return FALSE;
14643 }
14644
14645 static void
14646 gtk_tree_view_search_init (GtkWidget   *entry,
14647                            GtkTreeView *tree_view)
14648 {
14649   gint ret;
14650   gint count = 0;
14651   const gchar *text;
14652   GtkTreeIter iter;
14653   GtkTreeModel *model;
14654   GtkTreeSelection *selection;
14655
14656   g_return_if_fail (GTK_IS_ENTRY (entry));
14657   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14658
14659   text = gtk_entry_get_text (GTK_ENTRY (entry));
14660
14661   model = gtk_tree_view_get_model (tree_view);
14662   selection = gtk_tree_view_get_selection (tree_view);
14663
14664   /* search */
14665   gtk_tree_selection_unselect_all (selection);
14666   if (tree_view->priv->typeselect_flush_timeout
14667       && !tree_view->priv->search_custom_entry_set)
14668     {
14669       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14670       tree_view->priv->typeselect_flush_timeout =
14671         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14672                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14673                        tree_view);
14674     }
14675
14676   if (*text == '\0')
14677     return;
14678
14679   if (!gtk_tree_model_get_iter_first (model, &iter))
14680     return;
14681
14682   ret = gtk_tree_view_search_iter (model, selection,
14683                                    &iter, text,
14684                                    &count, 1);
14685
14686   if (ret)
14687     tree_view->priv->selected_iter = 1;
14688 }
14689
14690 static void
14691 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14692                              GtkTreeView     *tree_view)
14693 {
14694   if (tree_view->priv->edited_column == NULL)
14695     return;
14696
14697   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14698   tree_view->priv->edited_column = NULL;
14699
14700   if (GTK_WIDGET_HAS_FOCUS (cell_editable))
14701     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14702
14703   g_signal_handlers_disconnect_by_func (cell_editable,
14704                                         gtk_tree_view_remove_widget,
14705                                         tree_view);
14706
14707   gtk_container_remove (GTK_CONTAINER (tree_view),
14708                         GTK_WIDGET (cell_editable));
14709
14710   /* FIXME should only redraw a single node */
14711   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14712 }
14713
14714 static gboolean
14715 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14716                              GtkTreePath *cursor_path)
14717 {
14718   GtkTreeIter iter;
14719   GdkRectangle background_area;
14720   GdkRectangle cell_area;
14721   GtkCellEditable *editable_widget = NULL;
14722   gchar *path_string;
14723   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14724   gint retval = FALSE;
14725   GtkRBTree *cursor_tree;
14726   GtkRBNode *cursor_node;
14727
14728   g_assert (tree_view->priv->focus_column);
14729
14730   if (! GTK_WIDGET_REALIZED (tree_view))
14731     return FALSE;
14732
14733   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14734       cursor_node == NULL)
14735     return FALSE;
14736
14737   path_string = gtk_tree_path_to_string (cursor_path);
14738   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14739
14740   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14741
14742   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14743                                            tree_view->priv->model,
14744                                            &iter,
14745                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14746                                            cursor_node->children?TRUE:FALSE);
14747   gtk_tree_view_get_background_area (tree_view,
14748                                      cursor_path,
14749                                      tree_view->priv->focus_column,
14750                                      &background_area);
14751   gtk_tree_view_get_cell_area (tree_view,
14752                                cursor_path,
14753                                tree_view->priv->focus_column,
14754                                &cell_area);
14755
14756   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14757                                         &editable_widget,
14758                                         NULL,
14759                                         path_string,
14760                                         &background_area,
14761                                         &cell_area,
14762                                         flags))
14763     {
14764       retval = TRUE;
14765       if (editable_widget != NULL)
14766         {
14767           gint left, right;
14768           GdkRectangle area;
14769           GtkCellRenderer *cell;
14770
14771           area = cell_area;
14772           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14773
14774           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14775
14776           area.x += left;
14777           area.width -= right + left;
14778
14779           gtk_tree_view_real_start_editing (tree_view,
14780                                             tree_view->priv->focus_column,
14781                                             cursor_path,
14782                                             editable_widget,
14783                                             &area,
14784                                             NULL,
14785                                             flags);
14786         }
14787
14788     }
14789   g_free (path_string);
14790   return retval;
14791 }
14792
14793 static void
14794 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14795                                   GtkTreeViewColumn *column,
14796                                   GtkTreePath       *path,
14797                                   GtkCellEditable   *cell_editable,
14798                                   GdkRectangle      *cell_area,
14799                                   GdkEvent          *event,
14800                                   guint              flags)
14801 {
14802   gint pre_val = tree_view->priv->vadjustment->value;
14803   GtkRequisition requisition;
14804
14805   tree_view->priv->edited_column = column;
14806   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14807
14808   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14809   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14810
14811   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14812
14813   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14814
14815   if (requisition.height < cell_area->height)
14816     {
14817       gint diff = cell_area->height - requisition.height;
14818       gtk_tree_view_put (tree_view,
14819                          GTK_WIDGET (cell_editable),
14820                          cell_area->x, cell_area->y + diff/2,
14821                          cell_area->width, requisition.height);
14822     }
14823   else
14824     {
14825       gtk_tree_view_put (tree_view,
14826                          GTK_WIDGET (cell_editable),
14827                          cell_area->x, cell_area->y,
14828                          cell_area->width, cell_area->height);
14829     }
14830
14831   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14832                                    (GdkEvent *)event);
14833
14834   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14835   g_signal_connect (cell_editable, "remove-widget",
14836                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14837 }
14838
14839 static void
14840 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14841                             gboolean     cancel_editing)
14842 {
14843   GtkTreeViewColumn *column;
14844   GtkCellRenderer *cell;
14845
14846   if (tree_view->priv->edited_column == NULL)
14847     return;
14848
14849   /*
14850    * This is very evil. We need to do this, because
14851    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14852    * later on. If gtk_tree_view_row_changed notices
14853    * tree_view->priv->edited_column != NULL, it'll call
14854    * gtk_tree_view_stop_editing again. Bad things will happen then.
14855    *
14856    * Please read that again if you intend to modify anything here.
14857    */
14858
14859   column = tree_view->priv->edited_column;
14860   tree_view->priv->edited_column = NULL;
14861
14862   cell = _gtk_tree_view_column_get_edited_cell (column);
14863   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14864
14865   if (!cancel_editing)
14866     gtk_cell_editable_editing_done (column->editable_widget);
14867
14868   tree_view->priv->edited_column = column;
14869
14870   gtk_cell_editable_remove_widget (column->editable_widget);
14871 }
14872
14873
14874 /**
14875  * gtk_tree_view_set_hover_selection:
14876  * @tree_view: a #GtkTreeView
14877  * @hover: %TRUE to enable hover selection mode
14878  *
14879  * Enables of disables the hover selection mode of @tree_view.
14880  * Hover selection makes the selected row follow the pointer.
14881  * Currently, this works only for the selection modes
14882  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14883  *
14884  * Since: 2.6
14885  **/
14886 void
14887 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14888                                    gboolean     hover)
14889 {
14890   hover = hover != FALSE;
14891
14892   if (hover != tree_view->priv->hover_selection)
14893     {
14894       tree_view->priv->hover_selection = hover;
14895
14896       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14897     }
14898 }
14899
14900 /**
14901  * gtk_tree_view_get_hover_selection:
14902  * @tree_view: a #GtkTreeView
14903  *
14904  * Returns whether hover selection mode is turned on for @tree_view.
14905  *
14906  * Return value: %TRUE if @tree_view is in hover selection mode
14907  *
14908  * Since: 2.6
14909  **/
14910 gboolean
14911 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14912 {
14913   return tree_view->priv->hover_selection;
14914 }
14915
14916 /**
14917  * gtk_tree_view_set_hover_expand:
14918  * @tree_view: a #GtkTreeView
14919  * @expand: %TRUE to enable hover selection mode
14920  *
14921  * Enables of disables the hover expansion mode of @tree_view.
14922  * Hover expansion makes rows expand or collapse if the pointer
14923  * moves over them.
14924  *
14925  * Since: 2.6
14926  **/
14927 void
14928 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14929                                 gboolean     expand)
14930 {
14931   expand = expand != FALSE;
14932
14933   if (expand != tree_view->priv->hover_expand)
14934     {
14935       tree_view->priv->hover_expand = expand;
14936
14937       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14938     }
14939 }
14940
14941 /**
14942  * gtk_tree_view_get_hover_expand:
14943  * @tree_view: a #GtkTreeView
14944  *
14945  * Returns whether hover expansion mode is turned on for @tree_view.
14946  *
14947  * Return value: %TRUE if @tree_view is in hover expansion mode
14948  *
14949  * Since: 2.6
14950  **/
14951 gboolean
14952 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14953 {
14954   return tree_view->priv->hover_expand;
14955 }
14956
14957 /**
14958  * gtk_tree_view_set_rubber_banding:
14959  * @tree_view: a #GtkTreeView
14960  * @enable: %TRUE to enable rubber banding
14961  *
14962  * Enables or disables rubber banding in @tree_view.  If the selection mode
14963  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14964  * multiple rows by dragging the mouse.
14965  *
14966  * Since: 2.10
14967  **/
14968 void
14969 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14970                                   gboolean     enable)
14971 {
14972   enable = enable != FALSE;
14973
14974   if (enable != tree_view->priv->rubber_banding_enable)
14975     {
14976       tree_view->priv->rubber_banding_enable = enable;
14977
14978       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14979     }
14980 }
14981
14982 /**
14983  * gtk_tree_view_get_rubber_banding:
14984  * @tree_view: a #GtkTreeView
14985  *
14986  * Returns whether rubber banding is turned on for @tree_view.  If the
14987  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14988  * user to select multiple rows by dragging the mouse.
14989  *
14990  * Return value: %TRUE if rubber banding in @tree_view is enabled.
14991  *
14992  * Since: 2.10
14993  **/
14994 gboolean
14995 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
14996 {
14997   return tree_view->priv->rubber_banding_enable;
14998 }
14999
15000 /**
15001  * gtk_tree_view_is_rubber_banding_active:
15002  * @tree_view: a #GtkTreeView
15003  *
15004  * Returns whether a rubber banding operation is currently being done
15005  * in @tree_view.
15006  *
15007  * Return value: %TRUE if a rubber banding operation is currently being
15008  * done in @tree_view.
15009  *
15010  * Since: 2.12
15011  **/
15012 gboolean
15013 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15014 {
15015   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15016
15017   if (tree_view->priv->rubber_banding_enable
15018       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15019     return TRUE;
15020
15021   return FALSE;
15022 }
15023
15024 /**
15025  * gtk_tree_view_get_row_separator_func:
15026  * @tree_view: a #GtkTreeView
15027  *
15028  * Returns the current row separator function.
15029  *
15030  * Return value: the current row separator function.
15031  *
15032  * Since: 2.6
15033  **/
15034 GtkTreeViewRowSeparatorFunc
15035 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15036 {
15037   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15038
15039   return tree_view->priv->row_separator_func;
15040 }
15041
15042 /**
15043  * gtk_tree_view_set_row_separator_func:
15044  * @tree_view: a #GtkTreeView
15045  * @func: a #GtkTreeViewRowSeparatorFunc
15046  * @data: user data to pass to @func, or %NULL
15047  * @destroy: destroy notifier for @data, or %NULL
15048  *
15049  * Sets the row separator function, which is used to determine
15050  * whether a row should be drawn as a separator. If the row separator
15051  * function is %NULL, no separators are drawn. This is the default value.
15052  *
15053  * Since: 2.6
15054  **/
15055 void
15056 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15057                                       GtkTreeViewRowSeparatorFunc  func,
15058                                       gpointer                     data,
15059                                       GDestroyNotify               destroy)
15060 {
15061   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15062
15063   if (tree_view->priv->row_separator_destroy)
15064     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15065
15066   tree_view->priv->row_separator_func = func;
15067   tree_view->priv->row_separator_data = data;
15068   tree_view->priv->row_separator_destroy = destroy;
15069
15070   /* Have the tree recalculate heights */
15071   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15072   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15073 }
15074
15075
15076 static void
15077 gtk_tree_view_grab_notify (GtkWidget *widget,
15078                            gboolean   was_grabbed)
15079 {
15080   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15081
15082   tree_view->priv->in_grab = !was_grabbed;
15083
15084   if (!was_grabbed)
15085     {
15086       tree_view->priv->pressed_button = -1;
15087
15088       if (tree_view->priv->rubber_band_status)
15089         gtk_tree_view_stop_rubber_band (tree_view);
15090     }
15091 }
15092
15093 static void
15094 gtk_tree_view_state_changed (GtkWidget      *widget,
15095                              GtkStateType    previous_state)
15096 {
15097   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15098
15099   if (GTK_WIDGET_REALIZED (widget))
15100     {
15101       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15102       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15103     }
15104
15105   gtk_widget_queue_draw (widget);
15106 }
15107
15108 /**
15109  * gtk_tree_view_get_grid_lines:
15110  * @tree_view: a #GtkTreeView
15111  *
15112  * Returns which grid lines are enabled in @tree_view.
15113  *
15114  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15115  * are enabled.
15116  *
15117  * Since: 2.10
15118  */
15119 GtkTreeViewGridLines
15120 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15121 {
15122   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15123
15124   return tree_view->priv->grid_lines;
15125 }
15126
15127 /**
15128  * gtk_tree_view_set_grid_lines:
15129  * @tree_view: a #GtkTreeView
15130  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15131  * enable.
15132  *
15133  * Sets which grid lines to draw in @tree_view.
15134  *
15135  * Since: 2.10
15136  */
15137 void
15138 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15139                               GtkTreeViewGridLines   grid_lines)
15140 {
15141   GtkTreeViewPrivate *priv;
15142   GtkWidget *widget;
15143   GtkTreeViewGridLines old_grid_lines;
15144
15145   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15146
15147   priv = tree_view->priv;
15148   widget = GTK_WIDGET (tree_view);
15149
15150   old_grid_lines = priv->grid_lines;
15151   priv->grid_lines = grid_lines;
15152
15153   if (GTK_WIDGET_REALIZED (widget))
15154     {
15155       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15156           priv->grid_line_gc)
15157         {
15158           g_object_unref (priv->grid_line_gc);
15159           priv->grid_line_gc = NULL;
15160         }
15161
15162       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15163           !priv->grid_line_gc)
15164         {
15165           gint line_width;
15166           gint8 *dash_list;
15167
15168           gtk_widget_style_get (widget,
15169                                 "grid-line-width", &line_width,
15170                                 "grid-line-pattern", (gchar *)&dash_list,
15171                                 NULL);
15172
15173           priv->grid_line_gc = gdk_gc_new (widget->window);
15174           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15175
15176           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15177                                       GDK_LINE_ON_OFF_DASH,
15178                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15179           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15180
15181           g_free (dash_list);
15182         }
15183     }
15184
15185   if (old_grid_lines != grid_lines)
15186     {
15187       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15188
15189       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15190     }
15191 }
15192
15193 /**
15194  * gtk_tree_view_get_enable_tree_lines:
15195  * @tree_view: a #GtkTreeView.
15196  *
15197  * Returns whether or not tree lines are drawn in @tree_view.
15198  *
15199  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15200  * otherwise.
15201  *
15202  * Since: 2.10
15203  */
15204 gboolean
15205 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15206 {
15207   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15208
15209   return tree_view->priv->tree_lines_enabled;
15210 }
15211
15212 /**
15213  * gtk_tree_view_set_enable_tree_lines:
15214  * @tree_view: a #GtkTreeView
15215  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15216  *
15217  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15218  * This does not have any visible effects for lists.
15219  *
15220  * Since: 2.10
15221  */
15222 void
15223 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15224                                      gboolean     enabled)
15225 {
15226   GtkTreeViewPrivate *priv;
15227   GtkWidget *widget;
15228   gboolean was_enabled;
15229
15230   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15231
15232   enabled = enabled != FALSE;
15233
15234   priv = tree_view->priv;
15235   widget = GTK_WIDGET (tree_view);
15236
15237   was_enabled = priv->tree_lines_enabled;
15238
15239   priv->tree_lines_enabled = enabled;
15240
15241   if (GTK_WIDGET_REALIZED (widget))
15242     {
15243       if (!enabled && priv->tree_line_gc)
15244         {
15245           g_object_unref (priv->tree_line_gc);
15246           priv->tree_line_gc = NULL;
15247         }
15248
15249       if (enabled && !priv->tree_line_gc)
15250         {
15251           gint line_width;
15252           gint8 *dash_list;
15253           gtk_widget_style_get (widget,
15254                                 "tree-line-width", &line_width,
15255                                 "tree-line-pattern", (gchar *)&dash_list,
15256                                 NULL);
15257
15258           priv->tree_line_gc = gdk_gc_new (widget->window);
15259           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15260
15261           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15262                                       GDK_LINE_ON_OFF_DASH,
15263                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15264           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15265
15266           g_free (dash_list);
15267         }
15268     }
15269
15270   if (was_enabled != enabled)
15271     {
15272       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15273
15274       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15275     }
15276 }
15277
15278
15279 /**
15280  * gtk_tree_view_set_show_expanders:
15281  * @tree_view: a #GtkTreeView
15282  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15283  *
15284  * Sets whether to draw and enable expanders and indent child rows in
15285  * @tree_view.  When disabled there will be no expanders visible in trees
15286  * and there will be no way to expand and collapse rows by default.  Also
15287  * note that hiding the expanders will disable the default indentation.  You
15288  * can set a custom indentation in this case using
15289  * gtk_tree_view_set_level_indentation().
15290  * This does not have any visible effects for lists.
15291  *
15292  * Since: 2.12
15293  */
15294 void
15295 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15296                                   gboolean     enabled)
15297 {
15298   gboolean was_enabled;
15299
15300   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15301
15302   enabled = enabled != FALSE;
15303   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15304
15305   if (enabled)
15306     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15307   else
15308     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15309
15310   if (enabled != was_enabled)
15311     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15312 }
15313
15314 /**
15315  * gtk_tree_view_get_show_expanders:
15316  * @tree_view: a #GtkTreeView.
15317  *
15318  * Returns whether or not expanders are drawn in @tree_view.
15319  *
15320  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15321  * otherwise.
15322  *
15323  * Since: 2.12
15324  */
15325 gboolean
15326 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15327 {
15328   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15329
15330   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15331 }
15332
15333 /**
15334  * gtk_tree_view_set_level_indentation:
15335  * @tree_view: a #GtkTreeView
15336  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15337  *
15338  * Sets the amount of extra indentation for child levels to use in @tree_view
15339  * in addition to the default indentation.  The value should be specified in
15340  * pixels, a value of 0 disables this feature and in this case only the default
15341  * indentation will be used.
15342  * This does not have any visible effects for lists.
15343  *
15344  * Since: 2.12
15345  */
15346 void
15347 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15348                                      gint         indentation)
15349 {
15350   tree_view->priv->level_indentation = indentation;
15351
15352   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15353 }
15354
15355 /**
15356  * gtk_tree_view_get_level_indentation:
15357  * @tree_view: a #GtkTreeView.
15358  *
15359  * Returns the amount, in pixels, of extra indentation for child levels
15360  * in @tree_view.
15361  *
15362  * Return value: the amount of extra indentation for child levels in
15363  * @tree_view.  A return value of 0 means that this feature is disabled.
15364  *
15365  * Since: 2.12
15366  */
15367 gint
15368 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15369 {
15370   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15371
15372   return tree_view->priv->level_indentation;
15373 }
15374
15375 /**
15376  * gtk_tree_view_set_tooltip_row:
15377  * @tree_view: a #GtkTreeView
15378  * @tooltip: a #GtkTooltip
15379  * @path: a #GtkTreePath
15380  *
15381  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15382  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15383  * See also gtk_tooltip_set_tip_area().
15384  *
15385  * Since: 2.12
15386  */
15387 void
15388 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15389                                GtkTooltip  *tooltip,
15390                                GtkTreePath *path)
15391 {
15392   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15393   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15394
15395   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15396 }
15397
15398 /**
15399  * gtk_tree_view_set_tooltip_cell:
15400  * @tree_view: a #GtkTreeView
15401  * @tooltip: a #GtkTooltip
15402  * @path: a #GtkTreePath or %NULL
15403  * @column: a #GtkTreeViewColumn or %NULL
15404  * @cell: a #GtkCellRenderer or %NULL
15405  *
15406  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15407  * in common.  For example if @path is %NULL and @column is set, the tip
15408  * area will be set to the full area covered by @column.  See also
15409  * gtk_tooltip_set_tip_area().
15410  *
15411  * Note that if @path is not specified and @cell is set and part of a column
15412  * containing the expander, the tooltip might not show and hide at the correct
15413  * position.  In such cases @path must be set to the current node under the
15414  * mouse cursor for this function to operate correctly.
15415  *
15416  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15417  *
15418  * Since: 2.12
15419  */
15420 void
15421 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15422                                 GtkTooltip        *tooltip,
15423                                 GtkTreePath       *path,
15424                                 GtkTreeViewColumn *column,
15425                                 GtkCellRenderer   *cell)
15426 {
15427   GdkRectangle rect;
15428
15429   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15430   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15431   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15432   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15433
15434   /* Determine x values. */
15435   if (column && cell)
15436     {
15437       GdkRectangle tmp;
15438       gint start, width;
15439
15440       /* We always pass in path here, whether it is NULL or not.
15441        * For cells in expander columns path must be specified so that
15442        * we can correctly account for the indentation.  This also means
15443        * that the tooltip is constrained vertically by the "Determine y
15444        * values" code below; this is not a real problem since cells actually
15445        * don't stretch vertically in constrast to columns.
15446        */
15447       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15448       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15449
15450       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15451                                                          tmp.x + start, 0,
15452                                                          &rect.x, NULL);
15453       rect.width = width;
15454     }
15455   else if (column)
15456     {
15457       GdkRectangle tmp;
15458
15459       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15460       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15461                                                          tmp.x, 0,
15462                                                          &rect.x, NULL);
15463       rect.width = tmp.width;
15464     }
15465   else
15466     {
15467       rect.x = 0;
15468       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15469     }
15470
15471   /* Determine y values. */
15472   if (path)
15473     {
15474       GdkRectangle tmp;
15475
15476       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15477       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15478                                                          0, tmp.y,
15479                                                          NULL, &rect.y);
15480       rect.height = tmp.height;
15481     }
15482   else
15483     {
15484       rect.y = 0;
15485       rect.height = tree_view->priv->vadjustment->page_size;
15486     }
15487
15488   gtk_tooltip_set_tip_area (tooltip, &rect);
15489 }
15490
15491 /**
15492  * gtk_tree_view_get_tooltip_context:
15493  * @tree_view: a #GtkTreeView
15494  * @x: the x coordinate (relative to widget coordinates)
15495  * @y: the y coordinate (relative to widget coordinates)
15496  * @keyboard_tip: whether this is a keyboard tooltip or not
15497  * @model: a pointer to receive a #GtkTreeModel or %NULL
15498  * @path: a pointer to receive a #GtkTreePath or %NULL
15499  * @iter: a pointer to receive a #GtkTreeIter or %NULL
15500  *
15501  * This function is supposed to be used in a #GtkWidget::query-tooltip
15502  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15503  * which are received in the signal handler, should be passed to this
15504  * function without modification.
15505  *
15506  * The return value indicates whether there is a tree view row at the given
15507  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15508  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15509  * @model, @path and @iter which have been provided will be set to point to
15510  * that row and the corresponding model.  @x and @y will always be converted
15511  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15512  *
15513  * Return value: whether or not the given tooltip context points to a row.
15514  *
15515  * Since: 2.12
15516  */
15517 gboolean
15518 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15519                                    gint          *x,
15520                                    gint          *y,
15521                                    gboolean       keyboard_tip,
15522                                    GtkTreeModel **model,
15523                                    GtkTreePath  **path,
15524                                    GtkTreeIter   *iter)
15525 {
15526   GtkTreePath *tmppath = NULL;
15527
15528   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15529   g_return_val_if_fail (x != NULL, FALSE);
15530   g_return_val_if_fail (y != NULL, FALSE);
15531
15532   if (keyboard_tip)
15533     {
15534       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15535
15536       if (!tmppath)
15537         return FALSE;
15538     }
15539   else
15540     {
15541       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15542                                                          x, y);
15543
15544       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15545                                           &tmppath, NULL, NULL, NULL))
15546         return FALSE;
15547     }
15548
15549   if (model)
15550     *model = gtk_tree_view_get_model (tree_view);
15551
15552   if (iter)
15553     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15554                              iter, tmppath);
15555
15556   if (path)
15557     *path = tmppath;
15558   else
15559     gtk_tree_path_free (tmppath);
15560
15561   return TRUE;
15562 }
15563
15564 static gboolean
15565 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15566                                     gint        x,
15567                                     gint        y,
15568                                     gboolean    keyboard_tip,
15569                                     GtkTooltip *tooltip,
15570                                     gpointer    data)
15571 {
15572   GValue value = { 0, };
15573   GValue transformed = { 0, };
15574   GtkTreeIter iter;
15575   GtkTreePath *path;
15576   GtkTreeModel *model;
15577   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15578
15579   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15580                                           &x, &y,
15581                                           keyboard_tip,
15582                                           &model, &path, &iter))
15583     return FALSE;
15584
15585   gtk_tree_model_get_value (model, &iter,
15586                             tree_view->priv->tooltip_column, &value);
15587
15588   g_value_init (&transformed, G_TYPE_STRING);
15589
15590   if (!g_value_transform (&value, &transformed))
15591     {
15592       g_value_unset (&value);
15593       gtk_tree_path_free (path);
15594
15595       return FALSE;
15596     }
15597
15598   g_value_unset (&value);
15599
15600   if (!g_value_get_string (&transformed))
15601     {
15602       g_value_unset (&transformed);
15603       gtk_tree_path_free (path);
15604
15605       return FALSE;
15606     }
15607
15608   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15609   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15610
15611   gtk_tree_path_free (path);
15612   g_value_unset (&transformed);
15613
15614   return TRUE;
15615 }
15616
15617 /**
15618  * gtk_tree_view_set_tooltip_column:
15619  * @tree_view: a #GtkTreeView
15620  * @column: an integer, which is a valid column number for @tree_view's model
15621  *
15622  * If you only plan to have simple (text-only) tooltips on full rows, you
15623  * can use this function to have #GtkTreeView handle these automatically
15624  * for you. @column should be set to the column in @tree_view's model
15625  * containing the tooltip texts, or -1 to disable this feature.
15626  *
15627  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15628  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15629  *
15630  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15631  * so &amp;, &lt;, etc have to be escaped in the text.
15632  *
15633  * Since: 2.12
15634  */
15635 void
15636 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15637                                   gint         column)
15638 {
15639   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15640
15641   if (column == tree_view->priv->tooltip_column)
15642     return;
15643
15644   if (column == -1)
15645     {
15646       g_signal_handlers_disconnect_by_func (tree_view,
15647                                             gtk_tree_view_set_tooltip_query_cb,
15648                                             NULL);
15649       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15650     }
15651   else
15652     {
15653       if (tree_view->priv->tooltip_column == -1)
15654         {
15655           g_signal_connect (tree_view, "query-tooltip",
15656                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15657           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15658         }
15659     }
15660
15661   tree_view->priv->tooltip_column = column;
15662   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15663 }
15664
15665 /**
15666  * gtk_tree_view_get_tooltip_column:
15667  * @tree_view: a #GtkTreeView
15668  *
15669  * Returns the column of @tree_view's model which is being used for
15670  * displaying tooltips on @tree_view's rows.
15671  *
15672  * Return value: the index of the tooltip column that is currently being
15673  * used, or -1 if this is disabled.
15674  *
15675  * Since: 2.12
15676  */
15677 gint
15678 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15679 {
15680   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15681
15682   return tree_view->priv->tooltip_column;
15683 }
15684
15685 static void
15686 gtk_tree_view_extended_layout_get_desired_size (GtkExtendedLayout *layout,
15687                                                 GtkRequisition    *minimal_size,
15688                                                 GtkRequisition    *desired_size)
15689 {
15690   GtkTreeView *tree_view;
15691   gint natural_width = 0;
15692   GList *column_iter;
15693   GtkRequisition requisition;
15694
15695   tree_view = GTK_TREE_VIEW (layout);
15696
15697   gtk_widget_size_request (GTK_WIDGET (layout), &requisition);
15698
15699   for (column_iter = tree_view->priv->columns; column_iter; column_iter = column_iter->next)
15700     {
15701       GtkTreeViewColumn *column = column_iter->data;
15702
15703       if (!column->visible)
15704         continue;
15705
15706       natural_width += gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
15707     }
15708
15709   if (minimal_size)
15710     *minimal_size = requisition;
15711
15712   if (desired_size)
15713     {
15714       desired_size->height = requisition.height;
15715       desired_size->width = natural_width;
15716     }
15717 }
15718
15719 static void
15720 gtk_tree_view_extended_layout_init (GtkExtendedLayoutIface *iface)
15721 {
15722   iface->get_desired_size = gtk_tree_view_extended_layout_get_desired_size;
15723 }
15724
15725
15726 #define __GTK_TREE_VIEW_C__
15727 #include "gtkaliasdef.c"