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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gdk/gdkkeysyms.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmain.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtkscrollable.h"
  48 #include "gtkprivate.h"
  49 #include "gtkwidgetprivate.h"
  50
  51 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  52 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  53 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  54 #define SCROLL_EDGE_SIZE 15
  55 #define EXPANDER_EXTRA_PADDING 4
  56 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  57 #define AUTO_EXPAND_TIMEOUT 500
  58
  59 /* The "background" areas of all rows/cells add up to cover the entire tree.
  60  * The background includes all inter-row and inter-cell spacing.
  61  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  62  * i.e. just the cells, no spacing.
  63  */
  64
  65 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  66 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  67
  68 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  69  * vice versa.
  70  */
  71 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  72 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  73
  74 /* This is in bin_window coordinates */
  75 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  76 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  77
  78 #define ROW_HEIGHT(tree_view,height) \
  79   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  80
  81
  82 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  83 struct _GtkTreeViewChild
  84 {
  85   GtkWidget *widget;
  86   gint x;
  87   gint y;
  88   gint width;
  89   gint height;
  90 };
  91
  92
  93 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  94 struct _TreeViewDragInfo
  95 {
  96   GdkModifierType start_button_mask;
  97   GtkTargetList *_unused_source_target_list;
  98   GdkDragAction source_actions;
  99
 100   GtkTargetList *_unused_dest_target_list;
 101
 102   guint source_set : 1;
 103   guint dest_set : 1;
 104 };
 105
 106
 107 /* Signals */
 108 enum
 109 {
 110   ROW_ACTIVATED,
 111   TEST_EXPAND_ROW,
 112   TEST_COLLAPSE_ROW,
 113   ROW_EXPANDED,
 114   ROW_COLLAPSED,
 115   COLUMNS_CHANGED,
 116   CURSOR_CHANGED,
 117   MOVE_CURSOR,
 118   SELECT_ALL,
 119   UNSELECT_ALL,
 120   SELECT_CURSOR_ROW,
 121   TOGGLE_CURSOR_ROW,
 122   EXPAND_COLLAPSE_CURSOR_ROW,
 123   SELECT_CURSOR_PARENT,
 124   START_INTERACTIVE_SEARCH,
 125   LAST_SIGNAL
 126 };
 127
 128 /* Properties */
 129 enum {
 130   PROP_0,
 131   PROP_MODEL,
 132   PROP_HADJUSTMENT,
 133   PROP_VADJUSTMENT,
 134   PROP_HEADERS_VISIBLE,
 135   PROP_HEADERS_CLICKABLE,
 136   PROP_EXPANDER_COLUMN,
 137   PROP_REORDERABLE,
 138   PROP_RULES_HINT,
 139   PROP_ENABLE_SEARCH,
 140   PROP_SEARCH_COLUMN,
 141   PROP_FIXED_HEIGHT_MODE,
 142   PROP_HOVER_SELECTION,
 143   PROP_HOVER_EXPAND,
 144   PROP_SHOW_EXPANDERS,
 145   PROP_LEVEL_INDENTATION,
 146   PROP_RUBBER_BANDING,
 147   PROP_ENABLE_GRID_LINES,
 148   PROP_ENABLE_TREE_LINES,
 149   PROP_TOOLTIP_COLUMN
 150 };
 151
 152 /* object signals */
 153 static void     gtk_tree_view_finalize             (GObject          *object);
 154 static void     gtk_tree_view_set_property         (GObject         *object,
 155                                                     guint            prop_id,
 156                                                     const GValue    *value,
 157                                                     GParamSpec      *pspec);
 158 static void     gtk_tree_view_get_property         (GObject         *object,
 159                                                     guint            prop_id,
 160                                                     GValue          *value,
 161                                                     GParamSpec      *pspec);
 162
 163 /* gtkwidget signals */
 164 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 165 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 166 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 167 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 168 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 169                                                     GtkRequisition   *requisition);
 170 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 171                                                     GtkAllocation    *allocation);
 172 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 173                                                     cairo_t          *cr);
 174 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 175                                                     GdkEventKey      *event);
 176 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 177                                                     GdkEventKey      *event);
 178 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 179                                                     GdkEventMotion   *event);
 180 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 181                                                     GdkEventCrossing *event);
 182 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 183                                                     GdkEventCrossing *event);
 184 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 185                                                     GdkEventButton   *event);
 186 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 187                                                     GdkEventButton   *event);
 188 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 189                                                     GdkEventGrabBroken *event);
 190 #if 0
 191 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 192                                                     GdkEventConfigure *event);
 193 #endif
 194
 195 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 196                                                     GtkWidget        *child);
 197 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 198                                                     GdkEventFocus    *event);
 199 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 200                                                     GtkDirectionType  direction);
 201 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 202 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 203                                                     GtkStyle         *previous_style);
 204 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 205                                                     gboolean          was_grabbed);
 206 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 207                                                     GtkStateType      previous_state);
 208
 209 /* container signals */
 210 static void     gtk_tree_view_remove               (GtkContainer     *container,
 211                                                     GtkWidget        *widget);
 212 static void     gtk_tree_view_forall               (GtkContainer     *container,
 213                                                     gboolean          include_internals,
 214                                                     GtkCallback       callback,
 215                                                     gpointer          callback_data);
 216
 217 /* Source side drag signals */
 218 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 219                                             GdkDragContext   *context);
 220 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 221                                             GdkDragContext   *context);
 222 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 223                                             GdkDragContext   *context,
 224                                             GtkSelectionData *selection_data,
 225                                             guint             info,
 226                                             guint             time);
 227 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 228                                             GdkDragContext   *context);
 229
 230 /* Target side drag signals */
 231 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   guint             time);
 234 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 235                                                   GdkDragContext   *context,
 236                                                   gint              x,
 237                                                   gint              y,
 238                                                   guint             time);
 239 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 240                                                   GdkDragContext   *context,
 241                                                   gint              x,
 242                                                   gint              y,
 243                                                   guint             time);
 244 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 245                                                   GdkDragContext   *context,
 246                                                   gint              x,
 247                                                   gint              y,
 248                                                   GtkSelectionData *selection_data,
 249                                                   guint             info,
 250                                                   guint             time);
 251
 252 /* tree_model signals */
 253 static void     gtk_tree_view_set_hadjustment             (GtkTreeView     *tree_view,
 254                                                            GtkAdjustment   *adjustment);
 255 static void     gtk_tree_view_set_vadjustment             (GtkTreeView     *tree_view,
 256                                                            GtkAdjustment   *adjustment);
 257 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 258                                                            GtkMovementStep  step,
 259                                                            gint             count);
 260 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 262 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 263                                                            gboolean         start_editing);
 264 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 265 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 266                                                                gboolean         logical,
 267                                                                gboolean         expand,
 268                                                                gboolean         open_all);
 269 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 270 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 271                                                            GtkTreePath     *path,
 272                                                            GtkTreeIter     *iter,
 273                                                            gpointer         data);
 274 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 275                                                            GtkTreePath     *path,
 276                                                            GtkTreeIter     *iter,
 277                                                            gpointer         data);
 278 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 279                                                            GtkTreePath     *path,
 280                                                            GtkTreeIter     *iter,
 281                                                            gpointer         data);
 282 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 283                                                            GtkTreePath     *path,
 284                                                            gpointer         data);
 285 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 286                                                            GtkTreePath     *parent,
 287                                                            GtkTreeIter     *iter,
 288                                                            gint            *new_order,
 289                                                            gpointer         data);
 290
 291 /* Incremental reflow */
 292 static gboolean validate_row             (GtkTreeView *tree_view,
 293                                           GtkRBTree   *tree,
 294                                           GtkRBNode   *node,
 295                                           GtkTreeIter *iter,
 296                                           GtkTreePath *path);
 297 static void     validate_visible_area    (GtkTreeView *tree_view);
 298 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 299 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 300                                           gboolean     size_request);
 301 static gboolean validate_rows            (GtkTreeView *tree_view);
 302 static gboolean presize_handler_callback (gpointer     data);
 303 static void     install_presize_handler  (GtkTreeView *tree_view);
 304 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 305 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 306                                              GtkTreePath *path,
 307                                              gint         offset);
 308 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 309 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 310 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 311
 312 /* Internal functions */
 313 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 314                                                               GtkTreeViewColumn  *column);
 315 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 316                                                               guint               keyval,
 317                                                               guint               modmask,
 318                                                               gboolean            add_shifted_binding,
 319                                                               GtkMovementStep     step,
 320                                                               gint                count);
 321 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 322                                                               GtkRBTree          *tree);
 323 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 324                                                               GtkTreePath        *path,
 325                                                               const GdkRectangle *clip_rect);
 326 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 327                                                               GtkRBTree          *tree,
 328                                                               GtkRBNode          *node);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               cairo_t            *cr,
 331                                                               GtkRBTree          *tree,
 332                                                               GtkRBNode          *node,
 333                                                               gint                x,
 334                                                               gint                y);
 335 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 336                                                               GtkRBTree          *tree,
 337                                                               gint               *x1,
 338                                                               gint               *x2);
 339 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 340                                                               gint                i,
 341                                                               gint               *x);
 342 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 343                                                               GtkTreeView        *tree_view);
 344 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 345                                                               GtkRBTree          *tree,
 346                                                               GtkTreeIter        *iter,
 347                                                               gint                depth,
 348                                                               gboolean            recurse);
 349 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 350                                                               GtkRBTree          *tree,
 351                                                               GtkRBNode          *node);
 352 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 353                                                               GtkTreeViewColumn  *column,
 354                                                               gboolean            focus_to_cell);
 355 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 356                                                               GdkEventMotion     *event);
 357 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 358 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 359                                                               gint                count);
 360 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 361                                                               gint                count);
 362 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 363                                                               gint                count);
 364 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 365                                                               gint                count);
 366 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 367                                                               GtkTreePath        *path,
 368                                                               GtkRBTree          *tree,
 369                                                               GtkRBNode          *node,
 370                                                               gboolean            animate);
 371 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 372                                                               GtkTreePath        *path,
 373                                                               GtkRBTree          *tree,
 374                                                               GtkRBNode          *node,
 375                                                               gboolean            open_all,
 376                                                               gboolean            animate);
 377 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 378                                                               GtkTreePath        *path,
 379                                                               gboolean            clear_and_select,
 380                                                               gboolean            clamp_node);
 381 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 382 static void     column_sizing_notify                         (GObject            *object,
 383                                                               GParamSpec         *pspec,
 384                                                               gpointer            data);
 385 static gboolean expand_collapse_timeout                      (gpointer            data);
 386 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 387                                                               GtkRBTree          *tree,
 388                                                               GtkRBNode          *node,
 389                                                               gboolean            expand);
 390 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 391 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 392 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 393 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 394 static void     update_prelight                              (GtkTreeView        *tree_view,
 395                                                               int                 x,
 396                                                               int                 y);
 397
 398 /* interactive search */
 399 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 400 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 401                                                          GtkTreeView      *tree_view,
 402                                                          GdkDevice        *device);
 403 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 404                                                          GtkWidget        *search_dialog,
 405                                                          gpointer          user_data);
 406 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 407                                                          GtkMenu          *menu,
 408                                                          gpointer          data);
 409 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 410                                                          GtkTreeView      *tree_view);
 411 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 412                                                          GtkTreeView      *tree_view);
 413 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 414 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 415                                                          gpointer          data);
 416 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 417                                                          GdkEventAny      *event,
 418                                                          GtkTreeView      *tree_view);
 419 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 420                                                          GdkEventButton   *event,
 421                                                          GtkTreeView      *tree_view);
 422 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 423                                                          GdkEventScroll   *event,
 424                                                          GtkTreeView      *tree_view);
 425 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 426                                                          GdkEventKey      *event,
 427                                                          GtkTreeView      *tree_view);
 428 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 429                                                          GtkTreeView      *tree_view,
 430                                                          gboolean          up);
 431 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 432                                                          gint              column,
 433                                                          const gchar      *key,
 434                                                          GtkTreeIter      *iter,
 435                                                          gpointer          search_data);
 436 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 437                                                          GtkTreeSelection *selection,
 438                                                          GtkTreeIter      *iter,
 439                                                          const gchar      *text,
 440                                                          gint             *count,
 441                                                          gint              n);
 442 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 443                                                          GtkTreeView      *tree_view);
 444 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 445                                                          GtkWidget        *child_widget,
 446                                                          gint              x,
 447                                                          gint              y,
 448                                                          gint              width,
 449                                                          gint              height);
 450 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 451                                                          GtkTreePath      *cursor_path);
 452 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 453                                               GtkTreeViewColumn *column,
 454                                               GtkTreePath       *path,
 455                                               GtkCellEditable   *cell_editable,
 456                                               GdkRectangle      *cell_area,
 457                                               GdkEvent          *event,
 458                                               guint              flags);
 459 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 460                                                          gboolean     cancel_editing);
 461 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 462                                                              GdkDevice   *device,
 463                                                              gboolean     keybinding);
 464 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 465 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 466                                                          GtkTreeViewColumn *column,
 467                                                          gint               drop_position);
 468
 469 /* GtkBuildable */
 470 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 471                                                             GtkBuilder        *builder,
 472                                                             GObject           *child,
 473                                                             const gchar       *type);
 474 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 475                                                             GtkBuilder        *builder,
 476                                                             const gchar       *childname);
 477 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 478
 479
 480 static gboolean scroll_row_timeout                   (gpointer     data);
 481 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 482 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 483
 484 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 485
 486 \f
 487
 488 /* GType Methods
 489  */
 490
 491 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 492                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 493                                                 gtk_tree_view_buildable_init)
 494                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 495
 496 static void
 497 gtk_tree_view_class_init (GtkTreeViewClass *class)
 498 {
 499   GObjectClass *o_class;
 500   GtkWidgetClass *widget_class;
 501   GtkContainerClass *container_class;
 502   GtkBindingSet *binding_set;
 503
 504   binding_set = gtk_binding_set_by_class (class);
 505
 506   o_class = (GObjectClass *) class;
 507   widget_class = (GtkWidgetClass *) class;
 508   container_class = (GtkContainerClass *) class;
 509
 510   /* GObject signals */
 511   o_class->set_property = gtk_tree_view_set_property;
 512   o_class->get_property = gtk_tree_view_get_property;
 513   o_class->finalize = gtk_tree_view_finalize;
 514
 515   /* GtkWidget signals */
 516   widget_class->destroy = gtk_tree_view_destroy;
 517   widget_class->map = gtk_tree_view_map;
 518   widget_class->realize = gtk_tree_view_realize;
 519   widget_class->unrealize = gtk_tree_view_unrealize;
 520   widget_class->size_request = gtk_tree_view_size_request;
 521   widget_class->size_allocate = gtk_tree_view_size_allocate;
 522   widget_class->button_press_event = gtk_tree_view_button_press;
 523   widget_class->button_release_event = gtk_tree_view_button_release;
 524   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 525   /*widget_class->configure_event = gtk_tree_view_configure;*/
 526   widget_class->motion_notify_event = gtk_tree_view_motion;
 527   widget_class->draw = gtk_tree_view_draw;
 528   widget_class->key_press_event = gtk_tree_view_key_press;
 529   widget_class->key_release_event = gtk_tree_view_key_release;
 530   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 531   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 532   widget_class->focus_out_event = gtk_tree_view_focus_out;
 533   widget_class->drag_begin = gtk_tree_view_drag_begin;
 534   widget_class->drag_end = gtk_tree_view_drag_end;
 535   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 536   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 537   widget_class->drag_leave = gtk_tree_view_drag_leave;
 538   widget_class->drag_motion = gtk_tree_view_drag_motion;
 539   widget_class->drag_drop = gtk_tree_view_drag_drop;
 540   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 541   widget_class->focus = gtk_tree_view_focus;
 542   widget_class->grab_focus = gtk_tree_view_grab_focus;
 543   widget_class->style_set = gtk_tree_view_style_set;
 544   widget_class->grab_notify = gtk_tree_view_grab_notify;
 545   widget_class->state_changed = gtk_tree_view_state_changed;
 546
 547   /* GtkContainer signals */
 548   container_class->remove = gtk_tree_view_remove;
 549   container_class->forall = gtk_tree_view_forall;
 550   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 551
 552   class->move_cursor = gtk_tree_view_real_move_cursor;
 553   class->select_all = gtk_tree_view_real_select_all;
 554   class->unselect_all = gtk_tree_view_real_unselect_all;
 555   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 556   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 557   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 558   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 559   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 560
 561   /* Properties */
 562
 563   g_object_class_install_property (o_class,
 564                                    PROP_MODEL,
 565                                    g_param_spec_object ("model",
 566                                                         P_("TreeView Model"),
 567                                                         P_("The model for the tree view"),
 568                                                         GTK_TYPE_TREE_MODEL,
 569                                                         GTK_PARAM_READWRITE));
 570
 571   g_object_class_override_property (o_class, PROP_HADJUSTMENT, "hadjustment");
 572   g_object_class_override_property (o_class, PROP_VADJUSTMENT, "vadjustment");
 573
 574   g_object_class_install_property (o_class,
 575                                    PROP_HEADERS_VISIBLE,
 576                                    g_param_spec_boolean ("headers-visible",
 577                                                          P_("Headers Visible"),
 578                                                          P_("Show the column header buttons"),
 579                                                          TRUE,
 580                                                          GTK_PARAM_READWRITE));
 581
 582   g_object_class_install_property (o_class,
 583                                    PROP_HEADERS_CLICKABLE,
 584                                    g_param_spec_boolean ("headers-clickable",
 585                                                          P_("Headers Clickable"),
 586                                                          P_("Column headers respond to click events"),
 587                                                          TRUE,
 588                                                          GTK_PARAM_READWRITE));
 589
 590   g_object_class_install_property (o_class,
 591                                    PROP_EXPANDER_COLUMN,
 592                                    g_param_spec_object ("expander-column",
 593                                                         P_("Expander Column"),
 594                                                         P_("Set the column for the expander column"),
 595                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 596                                                         GTK_PARAM_READWRITE));
 597
 598   g_object_class_install_property (o_class,
 599                                    PROP_REORDERABLE,
 600                                    g_param_spec_boolean ("reorderable",
 601                                                          P_("Reorderable"),
 602                                                          P_("View is reorderable"),
 603                                                          FALSE,
 604                                                          GTK_PARAM_READWRITE));
 605
 606   g_object_class_install_property (o_class,
 607                                    PROP_RULES_HINT,
 608                                    g_param_spec_boolean ("rules-hint",
 609                                                          P_("Rules Hint"),
 610                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 611                                                          FALSE,
 612                                                          GTK_PARAM_READWRITE));
 613
 614     g_object_class_install_property (o_class,
 615                                      PROP_ENABLE_SEARCH,
 616                                      g_param_spec_boolean ("enable-search",
 617                                                            P_("Enable Search"),
 618                                                            P_("View allows user to search through columns interactively"),
 619                                                            TRUE,
 620                                                            GTK_PARAM_READWRITE));
 621
 622     g_object_class_install_property (o_class,
 623                                      PROP_SEARCH_COLUMN,
 624                                      g_param_spec_int ("search-column",
 625                                                        P_("Search Column"),
 626                                                        P_("Model column to search through during interactive search"),
 627                                                        -1,
 628                                                        G_MAXINT,
 629                                                        -1,
 630                                                        GTK_PARAM_READWRITE));
 631
 632     /**
 633      * GtkTreeView:fixed-height-mode:
 634      *
 635      * Setting the ::fixed-height-mode property to %TRUE speeds up
 636      * #GtkTreeView by assuming that all rows have the same height.
 637      * Only enable this option if all rows are the same height.
 638      * Please see gtk_tree_view_set_fixed_height_mode() for more
 639      * information on this option.
 640      *
 641      * Since: 2.4
 642      **/
 643     g_object_class_install_property (o_class,
 644                                      PROP_FIXED_HEIGHT_MODE,
 645                                      g_param_spec_boolean ("fixed-height-mode",
 646                                                            P_("Fixed Height Mode"),
 647                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 648                                                            FALSE,
 649                                                            GTK_PARAM_READWRITE));
 650
 651     /**
 652      * GtkTreeView:hover-selection:
 653      *
 654      * Enables or disables the hover selection mode of @tree_view.
 655      * Hover selection makes the selected row follow the pointer.
 656      * Currently, this works only for the selection modes
 657      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 658      *
 659      * This mode is primarily intended for treeviews in popups, e.g.
 660      * in #GtkComboBox or #GtkEntryCompletion.
 661      *
 662      * Since: 2.6
 663      */
 664     g_object_class_install_property (o_class,
 665                                      PROP_HOVER_SELECTION,
 666                                      g_param_spec_boolean ("hover-selection",
 667                                                            P_("Hover Selection"),
 668                                                            P_("Whether the selection should follow the pointer"),
 669                                                            FALSE,
 670                                                            GTK_PARAM_READWRITE));
 671
 672     /**
 673      * GtkTreeView:hover-expand:
 674      *
 675      * Enables or disables the hover expansion mode of @tree_view.
 676      * Hover expansion makes rows expand or collapse if the pointer moves
 677      * over them.
 678      *
 679      * This mode is primarily intended for treeviews in popups, e.g.
 680      * in #GtkComboBox or #GtkEntryCompletion.
 681      *
 682      * Since: 2.6
 683      */
 684     g_object_class_install_property (o_class,
 685                                      PROP_HOVER_EXPAND,
 686                                      g_param_spec_boolean ("hover-expand",
 687                                                            P_("Hover Expand"),
 688                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 689                                                            FALSE,
 690                                                            GTK_PARAM_READWRITE));
 691
 692     /**
 693      * GtkTreeView:show-expanders:
 694      *
 695      * %TRUE if the view has expanders.
 696      *
 697      * Since: 2.12
 698      */
 699     g_object_class_install_property (o_class,
 700                                      PROP_SHOW_EXPANDERS,
 701                                      g_param_spec_boolean ("show-expanders",
 702                                                            P_("Show Expanders"),
 703                                                            P_("View has expanders"),
 704                                                            TRUE,
 705                                                            GTK_PARAM_READWRITE));
 706
 707     /**
 708      * GtkTreeView:level-indentation:
 709      *
 710      * Extra indentation for each level.
 711      *
 712      * Since: 2.12
 713      */
 714     g_object_class_install_property (o_class,
 715                                      PROP_LEVEL_INDENTATION,
 716                                      g_param_spec_int ("level-indentation",
 717                                                        P_("Level Indentation"),
 718                                                        P_("Extra indentation for each level"),
 719                                                        0,
 720                                                        G_MAXINT,
 721                                                        0,
 722                                                        GTK_PARAM_READWRITE));
 723
 724     g_object_class_install_property (o_class,
 725                                      PROP_RUBBER_BANDING,
 726                                      g_param_spec_boolean ("rubber-banding",
 727                                                            P_("Rubber Banding"),
 728                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 729                                                            FALSE,
 730                                                            GTK_PARAM_READWRITE));
 731
 732     g_object_class_install_property (o_class,
 733                                      PROP_ENABLE_GRID_LINES,
 734                                      g_param_spec_enum ("enable-grid-lines",
 735                                                         P_("Enable Grid Lines"),
 736                                                         P_("Whether grid lines should be drawn in the tree view"),
 737                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 738                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 739                                                         GTK_PARAM_READWRITE));
 740
 741     g_object_class_install_property (o_class,
 742                                      PROP_ENABLE_TREE_LINES,
 743                                      g_param_spec_boolean ("enable-tree-lines",
 744                                                            P_("Enable Tree Lines"),
 745                                                            P_("Whether tree lines should be drawn in the tree view"),
 746                                                            FALSE,
 747                                                            GTK_PARAM_READWRITE));
 748
 749     g_object_class_install_property (o_class,
 750                                      PROP_TOOLTIP_COLUMN,
 751                                      g_param_spec_int ("tooltip-column",
 752                                                        P_("Tooltip Column"),
 753                                                        P_("The column in the model containing the tooltip texts for the rows"),
 754                                                        -1,
 755                                                        G_MAXINT,
 756                                                        -1,
 757                                                        GTK_PARAM_READWRITE));
 758
 759   /* Style properties */
 760 #define _TREE_VIEW_EXPANDER_SIZE 12
 761 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 762 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 763
 764   gtk_widget_class_install_style_property (widget_class,
 765                                            g_param_spec_int ("expander-size",
 766                                                              P_("Expander Size"),
 767                                                              P_("Size of the expander arrow"),
 768                                                              0,
 769                                                              G_MAXINT,
 770                                                              _TREE_VIEW_EXPANDER_SIZE,
 771                                                              GTK_PARAM_READABLE));
 772
 773   gtk_widget_class_install_style_property (widget_class,
 774                                            g_param_spec_int ("vertical-separator",
 775                                                              P_("Vertical Separator Width"),
 776                                                              P_("Vertical space between cells.  Must be an even number"),
 777                                                              0,
 778                                                              G_MAXINT,
 779                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 780                                                              GTK_PARAM_READABLE));
 781
 782   gtk_widget_class_install_style_property (widget_class,
 783                                            g_param_spec_int ("horizontal-separator",
 784                                                              P_("Horizontal Separator Width"),
 785                                                              P_("Horizontal space between cells.  Must be an even number"),
 786                                                              0,
 787                                                              G_MAXINT,
 788                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 789                                                              GTK_PARAM_READABLE));
 790
 791   gtk_widget_class_install_style_property (widget_class,
 792                                            g_param_spec_boolean ("allow-rules",
 793                                                                  P_("Allow Rules"),
 794                                                                  P_("Allow drawing of alternating color rows"),
 795                                                                  TRUE,
 796                                                                  GTK_PARAM_READABLE));
 797
 798   gtk_widget_class_install_style_property (widget_class,
 799                                            g_param_spec_boolean ("indent-expanders",
 800                                                                  P_("Indent Expanders"),
 801                                                                  P_("Make the expanders indented"),
 802                                                                  TRUE,
 803                                                                  GTK_PARAM_READABLE));
 804
 805   gtk_widget_class_install_style_property (widget_class,
 806                                            g_param_spec_boxed ("even-row-color",
 807                                                                P_("Even Row Color"),
 808                                                                P_("Color to use for even rows"),
 809                                                                GDK_TYPE_COLOR,
 810                                                                GTK_PARAM_READABLE));
 811
 812   gtk_widget_class_install_style_property (widget_class,
 813                                            g_param_spec_boxed ("odd-row-color",
 814                                                                P_("Odd Row Color"),
 815                                                                P_("Color to use for odd rows"),
 816                                                                GDK_TYPE_COLOR,
 817                                                                GTK_PARAM_READABLE));
 818
 819   gtk_widget_class_install_style_property (widget_class,
 820                                            g_param_spec_int ("grid-line-width",
 821                                                              P_("Grid line width"),
 822                                                              P_("Width, in pixels, of the tree view grid lines"),
 823                                                              0, G_MAXINT, 1,
 824                                                              GTK_PARAM_READABLE));
 825
 826   gtk_widget_class_install_style_property (widget_class,
 827                                            g_param_spec_int ("tree-line-width",
 828                                                              P_("Tree line width"),
 829                                                              P_("Width, in pixels, of the tree view lines"),
 830                                                              0, G_MAXINT, 1,
 831                                                              GTK_PARAM_READABLE));
 832
 833   gtk_widget_class_install_style_property (widget_class,
 834                                            g_param_spec_string ("grid-line-pattern",
 835                                                                 P_("Grid line pattern"),
 836                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 837                                                                 "\1\1",
 838                                                                 GTK_PARAM_READABLE));
 839
 840   gtk_widget_class_install_style_property (widget_class,
 841                                            g_param_spec_string ("tree-line-pattern",
 842                                                                 P_("Tree line pattern"),
 843                                                                 P_("Dash pattern used to draw the tree view lines"),
 844                                                                 "\1\1",
 845                                                                 GTK_PARAM_READABLE));
 846
 847   /* Signals */
 848   /**
 849    * GtkTreeView::row-activated:
 850    * @tree_view: the object on which the signal is emitted
 851    * @path: the #GtkTreePath for the activated row
 852    * @column: the #GtkTreeViewColumn in which the activation occurred
 853    *
 854    * The "row-activated" signal is emitted when the method
 855    * gtk_tree_view_row_activated() is called or the user double clicks
 856    * a treeview row. It is also emitted when a non-editable row is
 857    * selected and one of the keys: Space, Shift+Space, Return or
 858    * Enter is pressed.
 859    *
 860    * For selection handling refer to the <link linkend="TreeWidget">tree
 861    * widget conceptual overview</link> as well as #GtkTreeSelection.
 862    */
 863   tree_view_signals[ROW_ACTIVATED] =
 864     g_signal_new (I_("row-activated"),
 865                   G_TYPE_FROM_CLASS (o_class),
 866                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 867                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 868                   NULL, NULL,
 869                   _gtk_marshal_VOID__BOXED_OBJECT,
 870                   G_TYPE_NONE, 2,
 871                   GTK_TYPE_TREE_PATH,
 872                   GTK_TYPE_TREE_VIEW_COLUMN);
 873
 874   /**
 875    * GtkTreeView::test-expand-row:
 876    * @tree_view: the object on which the signal is emitted
 877    * @iter: the tree iter of the row to expand
 878    * @path: a tree path that points to the row
 879    *
 880    * The given row is about to be expanded (show its children nodes). Use this
 881    * signal if you need to control the expandability of individual rows.
 882    *
 883    * Returns: %FALSE to allow expansion, %TRUE to reject
 884    */
 885   tree_view_signals[TEST_EXPAND_ROW] =
 886     g_signal_new (I_("test-expand-row"),
 887                   G_TYPE_FROM_CLASS (o_class),
 888                   G_SIGNAL_RUN_LAST,
 889                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 890                   _gtk_boolean_handled_accumulator, NULL,
 891                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 892                   G_TYPE_BOOLEAN, 2,
 893                   GTK_TYPE_TREE_ITER,
 894                   GTK_TYPE_TREE_PATH);
 895
 896   /**
 897    * GtkTreeView::test-collapse-row:
 898    * @tree_view: the object on which the signal is emitted
 899    * @iter: the tree iter of the row to collapse
 900    * @path: a tree path that points to the row
 901    *
 902    * The given row is about to be collapsed (hide its children nodes). Use this
 903    * signal if you need to control the collapsibility of individual rows.
 904    *
 905    * Returns: %FALSE to allow collapsing, %TRUE to reject
 906    */
 907   tree_view_signals[TEST_COLLAPSE_ROW] =
 908     g_signal_new (I_("test-collapse-row"),
 909                   G_TYPE_FROM_CLASS (o_class),
 910                   G_SIGNAL_RUN_LAST,
 911                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 912                   _gtk_boolean_handled_accumulator, NULL,
 913                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 914                   G_TYPE_BOOLEAN, 2,
 915                   GTK_TYPE_TREE_ITER,
 916                   GTK_TYPE_TREE_PATH);
 917
 918   /**
 919    * GtkTreeView::row-expanded:
 920    * @tree_view: the object on which the signal is emitted
 921    * @iter: the tree iter of the expanded row
 922    * @path: a tree path that points to the row
 923    *
 924    * The given row has been expanded (child nodes are shown).
 925    */
 926   tree_view_signals[ROW_EXPANDED] =
 927     g_signal_new (I_("row-expanded"),
 928                   G_TYPE_FROM_CLASS (o_class),
 929                   G_SIGNAL_RUN_LAST,
 930                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 931                   NULL, NULL,
 932                   _gtk_marshal_VOID__BOXED_BOXED,
 933                   G_TYPE_NONE, 2,
 934                   GTK_TYPE_TREE_ITER,
 935                   GTK_TYPE_TREE_PATH);
 936
 937   /**
 938    * GtkTreeView::row-collapsed:
 939    * @tree_view: the object on which the signal is emitted
 940    * @iter: the tree iter of the collapsed row
 941    * @path: a tree path that points to the row
 942    *
 943    * The given row has been collapsed (child nodes are hidden).
 944    */
 945   tree_view_signals[ROW_COLLAPSED] =
 946     g_signal_new (I_("row-collapsed"),
 947                   G_TYPE_FROM_CLASS (o_class),
 948                   G_SIGNAL_RUN_LAST,
 949                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 950                   NULL, NULL,
 951                   _gtk_marshal_VOID__BOXED_BOXED,
 952                   G_TYPE_NONE, 2,
 953                   GTK_TYPE_TREE_ITER,
 954                   GTK_TYPE_TREE_PATH);
 955
 956   /**
 957    * GtkTreeView::columns-changed:
 958    * @tree_view: the object on which the signal is emitted
 959    *
 960    * The number of columns of the treeview has changed.
 961    */
 962   tree_view_signals[COLUMNS_CHANGED] =
 963     g_signal_new (I_("columns-changed"),
 964                   G_TYPE_FROM_CLASS (o_class),
 965                   G_SIGNAL_RUN_LAST,
 966                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 967                   NULL, NULL,
 968                   _gtk_marshal_VOID__VOID,
 969                   G_TYPE_NONE, 0);
 970
 971   /**
 972    * GtkTreeView::cursor-changed:
 973    * @tree_view: the object on which the signal is emitted
 974    *
 975    * The position of the cursor (focused cell) has changed.
 976    */
 977   tree_view_signals[CURSOR_CHANGED] =
 978     g_signal_new (I_("cursor-changed"),
 979                   G_TYPE_FROM_CLASS (o_class),
 980                   G_SIGNAL_RUN_LAST,
 981                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 982                   NULL, NULL,
 983                   _gtk_marshal_VOID__VOID,
 984                   G_TYPE_NONE, 0);
 985
 986   tree_view_signals[MOVE_CURSOR] =
 987     g_signal_new (I_("move-cursor"),
 988                   G_TYPE_FROM_CLASS (o_class),
 989                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 990                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 991                   NULL, NULL,
 992                   _gtk_marshal_BOOLEAN__ENUM_INT,
 993                   G_TYPE_BOOLEAN, 2,
 994                   GTK_TYPE_MOVEMENT_STEP,
 995                   G_TYPE_INT);
 996
 997   tree_view_signals[SELECT_ALL] =
 998     g_signal_new (I_("select-all"),
 999                   G_TYPE_FROM_CLASS (o_class),
1000                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1001                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1002                   NULL, NULL,
1003                   _gtk_marshal_BOOLEAN__VOID,
1004                   G_TYPE_BOOLEAN, 0);
1005
1006   tree_view_signals[UNSELECT_ALL] =
1007     g_signal_new (I_("unselect-all"),
1008                   G_TYPE_FROM_CLASS (o_class),
1009                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1010                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1011                   NULL, NULL,
1012                   _gtk_marshal_BOOLEAN__VOID,
1013                   G_TYPE_BOOLEAN, 0);
1014
1015   tree_view_signals[SELECT_CURSOR_ROW] =
1016     g_signal_new (I_("select-cursor-row"),
1017                   G_TYPE_FROM_CLASS (o_class),
1018                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1019                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1020                   NULL, NULL,
1021                   _gtk_marshal_BOOLEAN__BOOLEAN,
1022                   G_TYPE_BOOLEAN, 1,
1023                   G_TYPE_BOOLEAN);
1024
1025   tree_view_signals[TOGGLE_CURSOR_ROW] =
1026     g_signal_new (I_("toggle-cursor-row"),
1027                   G_TYPE_FROM_CLASS (o_class),
1028                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1029                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1030                   NULL, NULL,
1031                   _gtk_marshal_BOOLEAN__VOID,
1032                   G_TYPE_BOOLEAN, 0);
1033
1034   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1035     g_signal_new (I_("expand-collapse-cursor-row"),
1036                   G_TYPE_FROM_CLASS (o_class),
1037                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1038                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1039                   NULL, NULL,
1040                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1041                   G_TYPE_BOOLEAN, 3,
1042                   G_TYPE_BOOLEAN,
1043                   G_TYPE_BOOLEAN,
1044                   G_TYPE_BOOLEAN);
1045
1046   tree_view_signals[SELECT_CURSOR_PARENT] =
1047     g_signal_new (I_("select-cursor-parent"),
1048                   G_TYPE_FROM_CLASS (o_class),
1049                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1050                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1051                   NULL, NULL,
1052                   _gtk_marshal_BOOLEAN__VOID,
1053                   G_TYPE_BOOLEAN, 0);
1054
1055   tree_view_signals[START_INTERACTIVE_SEARCH] =
1056     g_signal_new (I_("start-interactive-search"),
1057                   G_TYPE_FROM_CLASS (o_class),
1058                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1059                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1060                   NULL, NULL,
1061                   _gtk_marshal_BOOLEAN__VOID,
1062                   G_TYPE_BOOLEAN, 0);
1063
1064   /* Key bindings */
1065   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1066                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1067   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1068                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1069
1070   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1071                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1072   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1073                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1074
1075   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1076                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1077
1078   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1079                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1080
1081   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1082                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1083   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1084                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1085
1086   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1087                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1088   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1089                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1090
1091   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1092                                   GTK_MOVEMENT_PAGES, -1);
1093   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1094                                   GTK_MOVEMENT_PAGES, -1);
1095
1096   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1097                                   GTK_MOVEMENT_PAGES, 1);
1098   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1099                                   GTK_MOVEMENT_PAGES, 1);
1100
1101
1102   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1103                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1104                                 G_TYPE_INT, 1);
1105
1106   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1107                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1108                                 G_TYPE_INT, -1);
1109
1110   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1111                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1112                                 G_TYPE_INT, 1);
1113
1114   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1115                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1116                                 G_TYPE_INT, -1);
1117
1118   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1119                                 "move-cursor", 2,
1120                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1121                                 G_TYPE_INT, 1);
1122
1123   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1124                                 "move-cursor", 2,
1125                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1126                                 G_TYPE_INT, -1);
1127
1128   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1129                                 "move-cursor", 2,
1130                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1131                                 G_TYPE_INT, 1);
1132
1133   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1134                                 "move-cursor", 2,
1135                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1136                                 G_TYPE_INT, -1);
1137
1138   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1139   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1140
1141   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1142   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1145   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1146
1147   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1148                                 G_TYPE_BOOLEAN, TRUE);
1149   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1150                                 G_TYPE_BOOLEAN, TRUE);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1153                                 G_TYPE_BOOLEAN, TRUE);
1154   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1155                                 G_TYPE_BOOLEAN, TRUE);
1156   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1157                                 G_TYPE_BOOLEAN, TRUE);
1158   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1159                                 G_TYPE_BOOLEAN, TRUE);
1160   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1161                                 G_TYPE_BOOLEAN, TRUE);
1162
1163   /* expand and collapse rows */
1164   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1165                                 G_TYPE_BOOLEAN, TRUE,
1166                                 G_TYPE_BOOLEAN, TRUE,
1167                                 G_TYPE_BOOLEAN, FALSE);
1168
1169   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1170                                 "expand-collapse-cursor-row", 3,
1171                                 G_TYPE_BOOLEAN, TRUE,
1172                                 G_TYPE_BOOLEAN, TRUE,
1173                                 G_TYPE_BOOLEAN, TRUE);
1174   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1175                                 "expand-collapse-cursor-row", 3,
1176                                 G_TYPE_BOOLEAN, TRUE,
1177                                 G_TYPE_BOOLEAN, TRUE,
1178                                 G_TYPE_BOOLEAN, TRUE);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1181                                 "expand-collapse-cursor-row", 3,
1182                                 G_TYPE_BOOLEAN, TRUE,
1183                                 G_TYPE_BOOLEAN, FALSE,
1184                                 G_TYPE_BOOLEAN, FALSE);
1185   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1186                                 "expand-collapse-cursor-row", 3,
1187                                 G_TYPE_BOOLEAN, TRUE,
1188                                 G_TYPE_BOOLEAN, FALSE,
1189                                 G_TYPE_BOOLEAN, FALSE);
1190
1191   /* Not doable on US keyboards */
1192   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1193                                 G_TYPE_BOOLEAN, TRUE,
1194                                 G_TYPE_BOOLEAN, TRUE,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1197                                 G_TYPE_BOOLEAN, TRUE,
1198                                 G_TYPE_BOOLEAN, TRUE,
1199                                 G_TYPE_BOOLEAN, FALSE);
1200   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1201                                 G_TYPE_BOOLEAN, TRUE,
1202                                 G_TYPE_BOOLEAN, TRUE,
1203                                 G_TYPE_BOOLEAN, TRUE);
1204   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1205                                 G_TYPE_BOOLEAN, TRUE,
1206                                 G_TYPE_BOOLEAN, TRUE,
1207                                 G_TYPE_BOOLEAN, TRUE);
1208   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1209                                 "expand-collapse-cursor-row", 3,
1210                                 G_TYPE_BOOLEAN, FALSE,
1211                                 G_TYPE_BOOLEAN, TRUE,
1212                                 G_TYPE_BOOLEAN, TRUE);
1213   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1214                                 "expand-collapse-cursor-row", 3,
1215                                 G_TYPE_BOOLEAN, FALSE,
1216                                 G_TYPE_BOOLEAN, TRUE,
1217                                 G_TYPE_BOOLEAN, TRUE);
1218   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1219                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1220                                 "expand-collapse-cursor-row", 3,
1221                                 G_TYPE_BOOLEAN, FALSE,
1222                                 G_TYPE_BOOLEAN, TRUE,
1223                                 G_TYPE_BOOLEAN, TRUE);
1224   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1225                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1226                                 "expand-collapse-cursor-row", 3,
1227                                 G_TYPE_BOOLEAN, FALSE,
1228                                 G_TYPE_BOOLEAN, TRUE,
1229                                 G_TYPE_BOOLEAN, TRUE);
1230
1231   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1232                                 G_TYPE_BOOLEAN, TRUE,
1233                                 G_TYPE_BOOLEAN, FALSE,
1234                                 G_TYPE_BOOLEAN, FALSE);
1235   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, FALSE,
1238                                 G_TYPE_BOOLEAN, TRUE);
1239   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, FALSE,
1242                                 G_TYPE_BOOLEAN, FALSE);
1243   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, FALSE,
1246                                 G_TYPE_BOOLEAN, TRUE);
1247   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1248                                 "expand-collapse-cursor-row", 3,
1249                                 G_TYPE_BOOLEAN, FALSE,
1250                                 G_TYPE_BOOLEAN, FALSE,
1251                                 G_TYPE_BOOLEAN, TRUE);
1252   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1253                                 "expand-collapse-cursor-row", 3,
1254                                 G_TYPE_BOOLEAN, FALSE,
1255                                 G_TYPE_BOOLEAN, FALSE,
1256                                 G_TYPE_BOOLEAN, TRUE);
1257   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1258                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1259                                 "expand-collapse-cursor-row", 3,
1260                                 G_TYPE_BOOLEAN, FALSE,
1261                                 G_TYPE_BOOLEAN, FALSE,
1262                                 G_TYPE_BOOLEAN, TRUE);
1263   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1264                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1265                                 "expand-collapse-cursor-row", 3,
1266                                 G_TYPE_BOOLEAN, FALSE,
1267                                 G_TYPE_BOOLEAN, FALSE,
1268                                 G_TYPE_BOOLEAN, TRUE);
1269
1270   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1271   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1272
1273   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1274
1275   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1276
1277   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1278 }
1279
1280 static void
1281 gtk_tree_view_init (GtkTreeView *tree_view)
1282 {
1283   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1284
1285   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1286   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1287
1288   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1289                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1290                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1291
1292   /* We need some padding */
1293   tree_view->priv->dy = 0;
1294   tree_view->priv->cursor_offset = 0;
1295   tree_view->priv->n_columns = 0;
1296   tree_view->priv->header_height = 1;
1297   tree_view->priv->x_drag = 0;
1298   tree_view->priv->drag_pos = -1;
1299   tree_view->priv->header_has_focus = FALSE;
1300   tree_view->priv->pressed_button = -1;
1301   tree_view->priv->press_start_x = -1;
1302   tree_view->priv->press_start_y = -1;
1303   tree_view->priv->reorderable = FALSE;
1304   tree_view->priv->presize_handler_timer = 0;
1305   tree_view->priv->scroll_sync_timer = 0;
1306   tree_view->priv->fixed_height = -1;
1307   tree_view->priv->fixed_height_mode = FALSE;
1308   tree_view->priv->fixed_height_check = 0;
1309   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1310   tree_view->priv->enable_search = TRUE;
1311   tree_view->priv->search_column = -1;
1312   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1313   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1314   tree_view->priv->search_custom_entry_set = FALSE;
1315   tree_view->priv->typeselect_flush_timeout = 0;
1316   tree_view->priv->init_hadjust_value = TRUE;
1317   tree_view->priv->width = 0;
1318
1319   tree_view->priv->hover_selection = FALSE;
1320   tree_view->priv->hover_expand = FALSE;
1321
1322   tree_view->priv->level_indentation = 0;
1323
1324   tree_view->priv->rubber_banding_enable = FALSE;
1325
1326   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1327   tree_view->priv->tree_lines_enabled = FALSE;
1328
1329   tree_view->priv->tooltip_column = -1;
1330
1331   tree_view->priv->post_validation_flag = FALSE;
1332
1333   tree_view->priv->last_button_x = -1;
1334   tree_view->priv->last_button_y = -1;
1335
1336   tree_view->priv->event_last_x = -10000;
1337   tree_view->priv->event_last_y = -10000;
1338
1339   gtk_tree_view_set_vadjustment (tree_view, NULL);
1340   gtk_tree_view_set_hadjustment (tree_view, NULL);
1341 }
1342
1343 \f
1344
1345 /* GObject Methods
1346  */
1347
1348 static void
1349 gtk_tree_view_set_property (GObject         *object,
1350                             guint            prop_id,
1351                             const GValue    *value,
1352                             GParamSpec      *pspec)
1353 {
1354   GtkTreeView *tree_view;
1355
1356   tree_view = GTK_TREE_VIEW (object);
1357
1358   switch (prop_id)
1359     {
1360     case PROP_MODEL:
1361       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1362       break;
1363     case PROP_HADJUSTMENT:
1364       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1365       break;
1366     case PROP_VADJUSTMENT:
1367       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1368       break;
1369     case PROP_HEADERS_VISIBLE:
1370       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1371       break;
1372     case PROP_HEADERS_CLICKABLE:
1373       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1374       break;
1375     case PROP_EXPANDER_COLUMN:
1376       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1377       break;
1378     case PROP_REORDERABLE:
1379       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1380       break;
1381     case PROP_RULES_HINT:
1382       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1383       break;
1384     case PROP_ENABLE_SEARCH:
1385       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1386       break;
1387     case PROP_SEARCH_COLUMN:
1388       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1389       break;
1390     case PROP_FIXED_HEIGHT_MODE:
1391       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1392       break;
1393     case PROP_HOVER_SELECTION:
1394       tree_view->priv->hover_selection = g_value_get_boolean (value);
1395       break;
1396     case PROP_HOVER_EXPAND:
1397       tree_view->priv->hover_expand = g_value_get_boolean (value);
1398       break;
1399     case PROP_SHOW_EXPANDERS:
1400       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1401       break;
1402     case PROP_LEVEL_INDENTATION:
1403       tree_view->priv->level_indentation = g_value_get_int (value);
1404       break;
1405     case PROP_RUBBER_BANDING:
1406       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1407       break;
1408     case PROP_ENABLE_GRID_LINES:
1409       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1410       break;
1411     case PROP_ENABLE_TREE_LINES:
1412       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1413       break;
1414     case PROP_TOOLTIP_COLUMN:
1415       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1416       break;
1417     default:
1418       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1419       break;
1420     }
1421 }
1422
1423 static void
1424 gtk_tree_view_get_property (GObject    *object,
1425                             guint       prop_id,
1426                             GValue     *value,
1427                             GParamSpec *pspec)
1428 {
1429   GtkTreeView *tree_view;
1430
1431   tree_view = GTK_TREE_VIEW (object);
1432
1433   switch (prop_id)
1434     {
1435     case PROP_MODEL:
1436       g_value_set_object (value, tree_view->priv->model);
1437       break;
1438     case PROP_HADJUSTMENT:
1439       g_value_set_object (value, tree_view->priv->hadjustment);
1440       break;
1441     case PROP_VADJUSTMENT:
1442       g_value_set_object (value, tree_view->priv->vadjustment);
1443       break;
1444     case PROP_HEADERS_VISIBLE:
1445       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1446       break;
1447     case PROP_HEADERS_CLICKABLE:
1448       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1449       break;
1450     case PROP_EXPANDER_COLUMN:
1451       g_value_set_object (value, tree_view->priv->expander_column);
1452       break;
1453     case PROP_REORDERABLE:
1454       g_value_set_boolean (value, tree_view->priv->reorderable);
1455       break;
1456     case PROP_RULES_HINT:
1457       g_value_set_boolean (value, tree_view->priv->has_rules);
1458       break;
1459     case PROP_ENABLE_SEARCH:
1460       g_value_set_boolean (value, tree_view->priv->enable_search);
1461       break;
1462     case PROP_SEARCH_COLUMN:
1463       g_value_set_int (value, tree_view->priv->search_column);
1464       break;
1465     case PROP_FIXED_HEIGHT_MODE:
1466       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1467       break;
1468     case PROP_HOVER_SELECTION:
1469       g_value_set_boolean (value, tree_view->priv->hover_selection);
1470       break;
1471     case PROP_HOVER_EXPAND:
1472       g_value_set_boolean (value, tree_view->priv->hover_expand);
1473       break;
1474     case PROP_SHOW_EXPANDERS:
1475       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1476       break;
1477     case PROP_LEVEL_INDENTATION:
1478       g_value_set_int (value, tree_view->priv->level_indentation);
1479       break;
1480     case PROP_RUBBER_BANDING:
1481       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1482       break;
1483     case PROP_ENABLE_GRID_LINES:
1484       g_value_set_enum (value, tree_view->priv->grid_lines);
1485       break;
1486     case PROP_ENABLE_TREE_LINES:
1487       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1488       break;
1489     case PROP_TOOLTIP_COLUMN:
1490       g_value_set_int (value, tree_view->priv->tooltip_column);
1491       break;
1492     default:
1493       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1494       break;
1495     }
1496 }
1497
1498 static void
1499 gtk_tree_view_finalize (GObject *object)
1500 {
1501   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1502 }
1503
1504
1505 static GtkBuildableIface *parent_buildable_iface;
1506
1507 static void
1508 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1509 {
1510   parent_buildable_iface = g_type_interface_peek_parent (iface);
1511   iface->add_child = gtk_tree_view_buildable_add_child;
1512   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1513 }
1514
1515 static void
1516 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1517                                    GtkBuilder  *builder,
1518                                    GObject     *child,
1519                                    const gchar *type)
1520 {
1521   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1522 }
1523
1524 static GObject *
1525 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1526                                             GtkBuilder        *builder,
1527                                             const gchar       *childname)
1528 {
1529     if (strcmp (childname, "selection") == 0)
1530       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1531
1532     return parent_buildable_iface->get_internal_child (buildable,
1533                                                        builder,
1534                                                        childname);
1535 }
1536
1537 /* GtkWidget Methods
1538  */
1539
1540 static void
1541 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1542 {
1543   _gtk_rbtree_free (tree_view->priv->tree);
1544
1545   tree_view->priv->tree = NULL;
1546   tree_view->priv->button_pressed_node = NULL;
1547   tree_view->priv->button_pressed_tree = NULL;
1548   tree_view->priv->prelight_tree = NULL;
1549   tree_view->priv->prelight_node = NULL;
1550   tree_view->priv->expanded_collapsed_node = NULL;
1551   tree_view->priv->expanded_collapsed_tree = NULL;
1552 }
1553
1554 static void
1555 gtk_tree_view_destroy (GtkWidget *widget)
1556 {
1557   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1558   GList *list;
1559
1560   gtk_tree_view_stop_editing (tree_view, TRUE);
1561
1562   if (tree_view->priv->columns != NULL)
1563     {
1564       list = tree_view->priv->columns;
1565       while (list)
1566         {
1567           GtkTreeViewColumn *column;
1568           column = GTK_TREE_VIEW_COLUMN (list->data);
1569           list = list->next;
1570           gtk_tree_view_remove_column (tree_view, column);
1571         }
1572       tree_view->priv->columns = NULL;
1573     }
1574
1575   if (tree_view->priv->tree != NULL)
1576     {
1577       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1578
1579       gtk_tree_view_free_rbtree (tree_view);
1580     }
1581
1582   if (tree_view->priv->selection != NULL)
1583     {
1584       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1585       g_object_unref (tree_view->priv->selection);
1586       tree_view->priv->selection = NULL;
1587     }
1588
1589   if (tree_view->priv->scroll_to_path != NULL)
1590     {
1591       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1592       tree_view->priv->scroll_to_path = NULL;
1593     }
1594
1595   if (tree_view->priv->drag_dest_row != NULL)
1596     {
1597       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1598       tree_view->priv->drag_dest_row = NULL;
1599     }
1600
1601   if (tree_view->priv->top_row != NULL)
1602     {
1603       gtk_tree_row_reference_free (tree_view->priv->top_row);
1604       tree_view->priv->top_row = NULL;
1605     }
1606
1607   if (tree_view->priv->column_drop_func_data &&
1608       tree_view->priv->column_drop_func_data_destroy)
1609     {
1610       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1611       tree_view->priv->column_drop_func_data = NULL;
1612     }
1613
1614   if (tree_view->priv->destroy_count_destroy &&
1615       tree_view->priv->destroy_count_data)
1616     {
1617       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1618       tree_view->priv->destroy_count_data = NULL;
1619     }
1620
1621   gtk_tree_row_reference_free (tree_view->priv->cursor);
1622   tree_view->priv->cursor = NULL;
1623
1624   gtk_tree_row_reference_free (tree_view->priv->anchor);
1625   tree_view->priv->anchor = NULL;
1626
1627   /* destroy interactive search dialog */
1628   if (tree_view->priv->search_window)
1629     {
1630       gtk_widget_destroy (tree_view->priv->search_window);
1631       tree_view->priv->search_window = NULL;
1632       tree_view->priv->search_entry = NULL;
1633       if (tree_view->priv->typeselect_flush_timeout)
1634         {
1635           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1636           tree_view->priv->typeselect_flush_timeout = 0;
1637         }
1638     }
1639
1640   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1641     {
1642       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1643       tree_view->priv->search_user_data = NULL;
1644     }
1645
1646   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1647     {
1648       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1649       tree_view->priv->search_position_user_data = NULL;
1650     }
1651
1652   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1653     {
1654       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1655       tree_view->priv->row_separator_data = NULL;
1656     }
1657
1658   gtk_tree_view_set_model (tree_view, NULL);
1659
1660   if (tree_view->priv->hadjustment)
1661     {
1662       g_object_unref (tree_view->priv->hadjustment);
1663       tree_view->priv->hadjustment = NULL;
1664     }
1665   if (tree_view->priv->vadjustment)
1666     {
1667       g_object_unref (tree_view->priv->vadjustment);
1668       tree_view->priv->vadjustment = NULL;
1669     }
1670
1671   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
1672 }
1673
1674 /* GtkWidget::map helper */
1675 static void
1676 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1677 {
1678   GList *list;
1679
1680   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1681
1682   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1683     {
1684       GtkTreeViewColumn *column;
1685
1686       for (list = tree_view->priv->columns; list; list = list->next)
1687         {
1688           column = list->data;
1689           if (gtk_widget_get_visible (column->button) &&
1690               !gtk_widget_get_mapped (column->button))
1691             gtk_widget_map (column->button);
1692         }
1693       for (list = tree_view->priv->columns; list; list = list->next)
1694         {
1695           column = list->data;
1696           if (column->visible == FALSE)
1697             continue;
1698           if (column->resizable)
1699             {
1700               gdk_window_raise (column->window);
1701               gdk_window_show (column->window);
1702             }
1703           else
1704             gdk_window_hide (column->window);
1705         }
1706       gdk_window_show (tree_view->priv->header_window);
1707     }
1708 }
1709
1710 static void
1711 gtk_tree_view_map (GtkWidget *widget)
1712 {
1713   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1714   GList *tmp_list;
1715
1716   gtk_widget_set_mapped (widget, TRUE);
1717
1718   tmp_list = tree_view->priv->children;
1719   while (tmp_list)
1720     {
1721       GtkTreeViewChild *child = tmp_list->data;
1722       tmp_list = tmp_list->next;
1723
1724       if (gtk_widget_get_visible (child->widget))
1725         {
1726           if (!gtk_widget_get_mapped (child->widget))
1727             gtk_widget_map (child->widget);
1728         }
1729     }
1730   gdk_window_show (tree_view->priv->bin_window);
1731
1732   gtk_tree_view_map_buttons (tree_view);
1733
1734   gdk_window_show (gtk_widget_get_window (widget));
1735 }
1736
1737 static void
1738 gtk_tree_view_realize (GtkWidget *widget)
1739 {
1740   GtkAllocation allocation;
1741   GtkStyle *style;
1742   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1743   GdkWindow *window;
1744   GdkWindowAttr attributes;
1745   GList *tmp_list;
1746   gint attributes_mask;
1747
1748   gtk_widget_set_realized (widget, TRUE);
1749
1750   gtk_widget_get_allocation (widget, &allocation);
1751
1752   /* Make the main, clipping window */
1753   attributes.window_type = GDK_WINDOW_CHILD;
1754   attributes.x = allocation.x;
1755   attributes.y = allocation.y;
1756   attributes.width = allocation.width;
1757   attributes.height = allocation.height;
1758   attributes.wclass = GDK_INPUT_OUTPUT;
1759   attributes.visual = gtk_widget_get_visual (widget);
1760   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1761
1762   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
1763
1764   window = gdk_window_new (gtk_widget_get_parent_window (widget),
1765                            &attributes, attributes_mask);
1766   gtk_widget_set_window (widget, window);
1767   gdk_window_set_user_data (window, widget);
1768
1769   gtk_widget_get_allocation (widget, &allocation);
1770
1771   /* Make the window for the tree */
1772   attributes.x = 0;
1773   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1774   attributes.width = MAX (tree_view->priv->width, allocation.width);
1775   attributes.height = allocation.height;
1776   attributes.event_mask = (GDK_EXPOSURE_MASK |
1777                            GDK_SCROLL_MASK |
1778                            GDK_POINTER_MOTION_MASK |
1779                            GDK_ENTER_NOTIFY_MASK |
1780                            GDK_LEAVE_NOTIFY_MASK |
1781                            GDK_BUTTON_PRESS_MASK |
1782                            GDK_BUTTON_RELEASE_MASK |
1783                            gtk_widget_get_events (widget));
1784
1785   tree_view->priv->bin_window = gdk_window_new (window,
1786                                                 &attributes, attributes_mask);
1787   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1788
1789   gtk_widget_get_allocation (widget, &allocation);
1790
1791   /* Make the column header window */
1792   attributes.x = 0;
1793   attributes.y = 0;
1794   attributes.width = MAX (tree_view->priv->width, allocation.width);
1795   attributes.height = tree_view->priv->header_height;
1796   attributes.event_mask = (GDK_EXPOSURE_MASK |
1797                            GDK_SCROLL_MASK |
1798                            GDK_ENTER_NOTIFY_MASK |
1799                            GDK_LEAVE_NOTIFY_MASK |
1800                            GDK_BUTTON_PRESS_MASK |
1801                            GDK_BUTTON_RELEASE_MASK |
1802                            GDK_KEY_PRESS_MASK |
1803                            GDK_KEY_RELEASE_MASK |
1804                            gtk_widget_get_events (widget));
1805
1806   tree_view->priv->header_window = gdk_window_new (window,
1807                                                    &attributes, attributes_mask);
1808   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1809
1810   /* Add them all up. */
1811   gtk_widget_style_attach (widget);
1812   style = gtk_widget_get_style (widget);
1813   gdk_window_set_background (tree_view->priv->bin_window,
1814                              &style->base[gtk_widget_get_state (widget)]);
1815   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1816
1817   tmp_list = tree_view->priv->children;
1818   while (tmp_list)
1819     {
1820       GtkTreeViewChild *child = tmp_list->data;
1821       tmp_list = tmp_list->next;
1822
1823       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1824     }
1825
1826   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1827     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1828
1829   /* Need to call those here, since they create GCs */
1830   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1831   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1832
1833   install_presize_handler (tree_view);
1834 }
1835
1836 static void
1837 gtk_tree_view_unrealize (GtkWidget *widget)
1838 {
1839   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1840   GtkTreeViewPrivate *priv = tree_view->priv;
1841   GList *list;
1842
1843   if (priv->scroll_timeout != 0)
1844     {
1845       g_source_remove (priv->scroll_timeout);
1846       priv->scroll_timeout = 0;
1847     }
1848
1849   if (priv->auto_expand_timeout != 0)
1850     {
1851       g_source_remove (priv->auto_expand_timeout);
1852       priv->auto_expand_timeout = 0;
1853     }
1854
1855   if (priv->open_dest_timeout != 0)
1856     {
1857       g_source_remove (priv->open_dest_timeout);
1858       priv->open_dest_timeout = 0;
1859     }
1860
1861   remove_expand_collapse_timeout (tree_view);
1862
1863   if (priv->presize_handler_timer != 0)
1864     {
1865       g_source_remove (priv->presize_handler_timer);
1866       priv->presize_handler_timer = 0;
1867     }
1868
1869   if (priv->validate_rows_timer != 0)
1870     {
1871       g_source_remove (priv->validate_rows_timer);
1872       priv->validate_rows_timer = 0;
1873     }
1874
1875   if (priv->scroll_sync_timer != 0)
1876     {
1877       g_source_remove (priv->scroll_sync_timer);
1878       priv->scroll_sync_timer = 0;
1879     }
1880
1881   if (priv->typeselect_flush_timeout)
1882     {
1883       g_source_remove (priv->typeselect_flush_timeout);
1884       priv->typeselect_flush_timeout = 0;
1885     }
1886
1887   for (list = priv->columns; list; list = list->next)
1888     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1889
1890   gdk_window_set_user_data (priv->bin_window, NULL);
1891   gdk_window_destroy (priv->bin_window);
1892   priv->bin_window = NULL;
1893
1894   gdk_window_set_user_data (priv->header_window, NULL);
1895   gdk_window_destroy (priv->header_window);
1896   priv->header_window = NULL;
1897
1898   if (priv->drag_window)
1899     {
1900       gdk_window_set_user_data (priv->drag_window, NULL);
1901       gdk_window_destroy (priv->drag_window);
1902       priv->drag_window = NULL;
1903     }
1904
1905   if (priv->drag_highlight_window)
1906     {
1907       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1908       gdk_window_destroy (priv->drag_highlight_window);
1909       priv->drag_highlight_window = NULL;
1910     }
1911
1912   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1913 }
1914
1915 /* GtkWidget::size_request helper */
1916 static void
1917 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1918 {
1919   GList *list;
1920
1921   tree_view->priv->header_height = 0;
1922
1923   if (tree_view->priv->model)
1924     {
1925       for (list = tree_view->priv->columns; list; list = list->next)
1926         {
1927           GtkRequisition requisition;
1928           GtkTreeViewColumn *column = list->data;
1929
1930           if (column->button == NULL)
1931             continue;
1932
1933           column = list->data;
1934
1935           gtk_widget_get_preferred_size (column->button, &requisition, NULL);
1936           column->button_request = requisition.width;
1937           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1938         }
1939     }
1940 }
1941
1942
1943 /* Called only by ::size_request */
1944 static void
1945 gtk_tree_view_update_size (GtkTreeView *tree_view)
1946 {
1947   GList *list;
1948   GtkTreeViewColumn *column;
1949   gint i;
1950
1951   if (tree_view->priv->model == NULL)
1952     {
1953       tree_view->priv->width = 0;
1954       tree_view->priv->prev_width = 0;
1955       tree_view->priv->height = 0;
1956       return;
1957     }
1958
1959   tree_view->priv->prev_width = tree_view->priv->width;
1960   tree_view->priv->width = 0;
1961
1962   /* keep this in sync with size_allocate below */
1963   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1964     {
1965       gint real_requested_width = 0;
1966       column = list->data;
1967       if (!column->visible)
1968         continue;
1969
1970       if (column->use_resized_width)
1971         {
1972           real_requested_width = column->resized_width;
1973         }
1974       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1975         {
1976           real_requested_width = column->fixed_width;
1977         }
1978       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1979         {
1980           real_requested_width = MAX (column->requested_width, column->button_request);
1981         }
1982       else
1983         {
1984           real_requested_width = column->requested_width;
1985         }
1986
1987       if (column->min_width != -1)
1988         real_requested_width = MAX (real_requested_width, column->min_width);
1989       if (column->max_width != -1)
1990         real_requested_width = MIN (real_requested_width, column->max_width);
1991
1992       tree_view->priv->width += real_requested_width;
1993     }
1994
1995   if (tree_view->priv->tree == NULL)
1996     tree_view->priv->height = 0;
1997   else
1998     tree_view->priv->height = tree_view->priv->tree->root->offset;
1999 }
2000
2001 static void
2002 gtk_tree_view_size_request (GtkWidget      *widget,
2003                             GtkRequisition *requisition)
2004 {
2005   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2006   GList *tmp_list;
2007
2008   /* we validate some rows initially just to make sure we have some size.
2009    * In practice, with a lot of static lists, this should get a good width.
2010    */
2011   do_validate_rows (tree_view, FALSE);
2012   gtk_tree_view_size_request_columns (tree_view);
2013   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2014
2015   requisition->width = tree_view->priv->width;
2016   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2017
2018   tmp_list = tree_view->priv->children;
2019
2020   while (tmp_list)
2021     {
2022       GtkTreeViewChild *child = tmp_list->data;
2023       GtkRequisition child_requisition;
2024
2025       tmp_list = tmp_list->next;
2026
2027       if (gtk_widget_get_visible (child->widget))
2028         gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
2029     }
2030 }
2031
2032 static int
2033 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2034 {
2035   int width = 0;
2036   GList *list;
2037   gboolean rtl;
2038
2039   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2040   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2041        list->data != tree_view->priv->expander_column;
2042        list = (rtl ? list->prev : list->next))
2043     {
2044       GtkTreeViewColumn *column = list->data;
2045
2046       width += column->width;
2047     }
2048
2049   return width;
2050 }
2051
2052 static void
2053 invalidate_column (GtkTreeView       *tree_view,
2054                    GtkTreeViewColumn *column)
2055 {
2056   gint column_offset = 0;
2057   GList *list;
2058   GtkWidget *widget = GTK_WIDGET (tree_view);
2059   gboolean rtl;
2060
2061   if (!gtk_widget_get_realized (widget))
2062     return;
2063
2064   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2065   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2066        list;
2067        list = (rtl ? list->prev : list->next))
2068     {
2069       GtkTreeViewColumn *tmpcolumn = list->data;
2070       if (tmpcolumn == column)
2071         {
2072           GtkAllocation allocation;
2073           GdkRectangle invalid_rect;
2074
2075           gtk_widget_get_allocation (widget, &allocation);
2076           invalid_rect.x = column_offset;
2077           invalid_rect.y = 0;
2078           invalid_rect.width = column->width;
2079           invalid_rect.height = allocation.height;
2080
2081           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2082           break;
2083         }
2084
2085       column_offset += tmpcolumn->width;
2086     }
2087 }
2088
2089 static void
2090 invalidate_last_column (GtkTreeView *tree_view)
2091 {
2092   GList *last_column;
2093   gboolean rtl;
2094
2095   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2096
2097   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2098        last_column;
2099        last_column = (rtl ? last_column->next : last_column->prev))
2100     {
2101       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2102         {
2103           invalidate_column (tree_view, last_column->data);
2104           return;
2105         }
2106     }
2107 }
2108
2109 static gint
2110 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2111                                                     GtkTreeViewColumn *column)
2112 {
2113   gint real_requested_width;
2114
2115   if (column->use_resized_width)
2116     {
2117       real_requested_width = column->resized_width;
2118     }
2119   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2120     {
2121       real_requested_width = column->fixed_width;
2122     }
2123   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2124     {
2125       real_requested_width = MAX (column->requested_width, column->button_request);
2126     }
2127   else
2128     {
2129       real_requested_width = column->requested_width;
2130       if (real_requested_width < 0)
2131         real_requested_width = 0;
2132     }
2133
2134   if (column->min_width != -1)
2135     real_requested_width = MAX (real_requested_width, column->min_width);
2136   if (column->max_width != -1)
2137     real_requested_width = MIN (real_requested_width, column->max_width);
2138
2139   return real_requested_width;
2140 }
2141
2142 /* GtkWidget::size_allocate helper */
2143 static void
2144 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2145                                      gboolean  *width_changed)
2146 {
2147   GtkTreeView *tree_view;
2148   GList *list, *first_column, *last_column;
2149   GtkTreeViewColumn *column;
2150   GtkAllocation allocation;
2151   GtkAllocation widget_allocation;
2152   gint width = 0;
2153   gint extra, extra_per_column, extra_for_last;
2154   gint full_requested_width = 0;
2155   gint number_of_expand_columns = 0;
2156   gboolean column_changed = FALSE;
2157   gboolean rtl;
2158   gboolean update_expand;
2159
2160   tree_view = GTK_TREE_VIEW (widget);
2161
2162   for (last_column = g_list_last (tree_view->priv->columns);
2163        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2164        last_column = last_column->prev)
2165     ;
2166   if (last_column == NULL)
2167     return;
2168
2169   for (first_column = g_list_first (tree_view->priv->columns);
2170        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2171        first_column = first_column->next)
2172     ;
2173
2174   allocation.y = 0;
2175   allocation.height = tree_view->priv->header_height;
2176
2177   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2178
2179   /* find out how many extra space and expandable columns we have */
2180   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2181     {
2182       column = (GtkTreeViewColumn *)list->data;
2183
2184       if (!column->visible)
2185         continue;
2186
2187       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2188
2189       if (column->expand)
2190         number_of_expand_columns++;
2191     }
2192
2193   /* Only update the expand value if the width of the widget has changed,
2194    * or the number of expand columns has changed, or if there are no expand
2195    * columns, or if we didn't have an size-allocation yet after the
2196    * last validated node.
2197    */
2198   update_expand = (width_changed && *width_changed == TRUE)
2199       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2200       || number_of_expand_columns == 0
2201       || tree_view->priv->post_validation_flag == TRUE;
2202
2203   tree_view->priv->post_validation_flag = FALSE;
2204
2205   gtk_widget_get_allocation (widget, &widget_allocation);
2206   if (!update_expand)
2207     {
2208       extra = tree_view->priv->last_extra_space;
2209       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2210     }
2211   else
2212     {
2213       extra = MAX (widget_allocation.width - full_requested_width, 0);
2214       extra_for_last = 0;
2215
2216       tree_view->priv->last_extra_space = extra;
2217     }
2218
2219   if (number_of_expand_columns > 0)
2220     extra_per_column = extra/number_of_expand_columns;
2221   else
2222     extra_per_column = 0;
2223
2224   if (update_expand)
2225     {
2226       tree_view->priv->last_extra_space_per_column = extra_per_column;
2227       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2228     }
2229
2230   for (list = (rtl ? last_column : first_column);
2231        list != (rtl ? first_column->prev : last_column->next);
2232        list = (rtl ? list->prev : list->next))
2233     {
2234       gint real_requested_width = 0;
2235       gint old_width;
2236
2237       column = list->data;
2238       old_width = column->width;
2239
2240       if (!column->visible)
2241         continue;
2242
2243       /* We need to handle the dragged button specially.
2244        */
2245       if (column == tree_view->priv->drag_column)
2246         {
2247           GtkAllocation drag_allocation;
2248
2249           drag_allocation.x = 0;
2250           drag_allocation.y = 0;
2251           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2252           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2253           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2254                                     &drag_allocation);
2255           width += drag_allocation.width;
2256           continue;
2257         }
2258
2259       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2260
2261       allocation.x = width;
2262       column->width = real_requested_width;
2263
2264       if (column->expand)
2265         {
2266           if (number_of_expand_columns == 1)
2267             {
2268               /* We add the remander to the last column as
2269                * */
2270               column->width += extra;
2271             }
2272           else
2273             {
2274               column->width += extra_per_column;
2275               extra -= extra_per_column;
2276               number_of_expand_columns --;
2277             }
2278         }
2279       else if (number_of_expand_columns == 0 &&
2280                list == last_column)
2281         {
2282           column->width += extra;
2283         }
2284
2285       /* In addition to expand, the last column can get even more
2286        * extra space so all available space is filled up.
2287        */
2288       if (extra_for_last > 0 && list == last_column)
2289         column->width += extra_for_last;
2290
2291       g_object_notify (G_OBJECT (column), "width");
2292
2293       allocation.width = column->width;
2294       width += column->width;
2295
2296       if (column->width > old_width)
2297         column_changed = TRUE;
2298
2299       gtk_widget_size_allocate (column->button, &allocation);
2300
2301       if (column->window)
2302         gdk_window_move_resize (column->window,
2303                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2304                                 allocation.y,
2305                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2306     }
2307
2308   /* We change the width here.  The user might have been resizing columns,
2309    * so the total width of the tree view changes.
2310    */
2311   tree_view->priv->width = width;
2312   if (width_changed)
2313     *width_changed = TRUE;
2314
2315   if (column_changed)
2316     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2317 }
2318
2319
2320 static void
2321 gtk_tree_view_size_allocate (GtkWidget     *widget,
2322                              GtkAllocation *allocation)
2323 {
2324   GtkAllocation widget_allocation;
2325   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2326   GList *tmp_list;
2327   gboolean width_changed = FALSE;
2328   gint old_width;
2329
2330   gtk_widget_get_allocation (widget, &widget_allocation);
2331   old_width = widget_allocation.width;
2332   if (allocation->width != widget_allocation.width)
2333     width_changed = TRUE;
2334
2335   gtk_widget_set_allocation (widget, allocation);
2336
2337   tmp_list = tree_view->priv->children;
2338
2339   while (tmp_list)
2340     {
2341       GtkAllocation allocation;
2342
2343       GtkTreeViewChild *child = tmp_list->data;
2344       tmp_list = tmp_list->next;
2345
2346       /* totally ignore our child's requisition */
2347       allocation.x = child->x;
2348       allocation.y = child->y;
2349       allocation.width = child->width;
2350       allocation.height = child->height;
2351       gtk_widget_size_allocate (child->widget, &allocation);
2352     }
2353
2354   /* We size-allocate the columns first because the width of the
2355    * tree view (used in updating the adjustments below) might change.
2356    */
2357   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2358
2359   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2360   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2361                                 allocation->width);
2362   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2363                                      allocation->width * 0.9);
2364   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2365                                      allocation->width * 0.1);
2366   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2367   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2368                             MAX (tree_view->priv->hadjustment->page_size,
2369                                  tree_view->priv->width));
2370   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2371
2372   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2373     {
2374       if (allocation->width < tree_view->priv->width)
2375         {
2376           if (tree_view->priv->init_hadjust_value)
2377             {
2378               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2379                                         MAX (tree_view->priv->width -
2380                                              allocation->width, 0));
2381               tree_view->priv->init_hadjust_value = FALSE;
2382             }
2383           else if (allocation->width != old_width)
2384             {
2385               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2386                                         CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width,
2387                                                0,
2388                                                tree_view->priv->width - allocation->width));
2389             }
2390           else
2391             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2392                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value),
2393                                              0,
2394                                              tree_view->priv->width - allocation->width));
2395         }
2396       else
2397         {
2398           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2399           tree_view->priv->init_hadjust_value = TRUE;
2400         }
2401     }
2402   else
2403     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2404       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2405                                 MAX (tree_view->priv->width -
2406                                      allocation->width, 0));
2407
2408   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2409   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2410                                 allocation->height -
2411                                 TREE_VIEW_HEADER_HEIGHT (tree_view));
2412   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2413                                      tree_view->priv->vadjustment->page_size * 0.1);
2414   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2415                                      tree_view->priv->vadjustment->page_size * 0.9);
2416   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2417   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2418                             MAX (tree_view->priv->vadjustment->page_size,
2419                                  tree_view->priv->height));
2420   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2421
2422   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2423   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2424     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2425   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2426     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2427                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2428   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2429     gtk_tree_view_top_row_to_dy (tree_view);
2430   else
2431     gtk_tree_view_dy_to_top_row (tree_view);
2432
2433   if (gtk_widget_get_realized (widget))
2434     {
2435       gdk_window_move_resize (gtk_widget_get_window (widget),
2436                               allocation->x, allocation->y,
2437                               allocation->width, allocation->height);
2438       gdk_window_move_resize (tree_view->priv->header_window,
2439                               - (gint) tree_view->priv->hadjustment->value,
2440                               0,
2441                               MAX (tree_view->priv->width, allocation->width),
2442                               tree_view->priv->header_height);
2443       gdk_window_move_resize (tree_view->priv->bin_window,
2444                               - (gint) tree_view->priv->hadjustment->value,
2445                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2446                               MAX (tree_view->priv->width, allocation->width),
2447                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2448     }
2449
2450   if (tree_view->priv->tree == NULL)
2451     invalidate_empty_focus (tree_view);
2452
2453   if (gtk_widget_get_realized (widget))
2454     {
2455       gboolean has_expand_column = FALSE;
2456       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2457         {
2458           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2459             {
2460               has_expand_column = TRUE;
2461               break;
2462             }
2463         }
2464
2465       if (width_changed && tree_view->priv->expander_column)
2466         {
2467           /* Might seem awkward, but is the best heuristic I could come up
2468            * with.  Only if the width of the columns before the expander
2469            * changes, we will update the prelight status.  It is this
2470            * width that makes the expander move vertically.  Always updating
2471            * prelight status causes trouble with hover selections.
2472            */
2473           gint width_before_expander;
2474
2475           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2476
2477           if (tree_view->priv->prev_width_before_expander
2478               != width_before_expander)
2479               update_prelight (tree_view,
2480                                tree_view->priv->event_last_x,
2481                                tree_view->priv->event_last_y);
2482
2483           tree_view->priv->prev_width_before_expander = width_before_expander;
2484         }
2485
2486       /* This little hack only works if we have an LTR locale, and no column has the  */
2487       if (width_changed)
2488         {
2489           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2490               ! has_expand_column)
2491             invalidate_last_column (tree_view);
2492           else
2493             gtk_widget_queue_draw (widget);
2494         }
2495     }
2496 }
2497
2498 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2499 static void
2500 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2501 {
2502   GtkWidget *widget = GTK_WIDGET (tree_view);
2503
2504   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2505     gtk_widget_grab_focus (widget);
2506   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2507 }
2508
2509 static inline gboolean
2510 row_is_separator (GtkTreeView *tree_view,
2511                   GtkTreeIter *iter,
2512                   GtkTreePath *path)
2513 {
2514   gboolean is_separator = FALSE;
2515
2516   if (tree_view->priv->row_separator_func)
2517     {
2518       GtkTreeIter tmpiter;
2519
2520       if (iter)
2521         tmpiter = *iter;
2522       else
2523         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2524
2525       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2526                                                           &tmpiter,
2527                                                           tree_view->priv->row_separator_data);
2528     }
2529
2530   return is_separator;
2531 }
2532
2533 static gboolean
2534 gtk_tree_view_button_press (GtkWidget      *widget,
2535                             GdkEventButton *event)
2536 {
2537   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2538   GList *list;
2539   GtkTreeViewColumn *column = NULL;
2540   gint i;
2541   GdkRectangle background_area;
2542   GdkRectangle cell_area;
2543   gint vertical_separator;
2544   gint horizontal_separator;
2545   gboolean path_is_selectable;
2546   gboolean rtl;
2547
2548   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2549   gtk_tree_view_stop_editing (tree_view, FALSE);
2550   gtk_widget_style_get (widget,
2551                         "vertical-separator", &vertical_separator,
2552                         "horizontal-separator", &horizontal_separator,
2553                         NULL);
2554
2555
2556   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2557    * we're done handling the button press.
2558    */
2559
2560   if (event->window == tree_view->priv->bin_window)
2561     {
2562       GtkRBNode *node;
2563       GtkRBTree *tree;
2564       GtkTreePath *path;
2565       gchar *path_string;
2566       gint depth;
2567       gint new_y;
2568       gint y_offset;
2569       gint dval;
2570       gint pre_val, aft_val;
2571       GtkTreeViewColumn *column = NULL;
2572       GtkCellRenderer *focus_cell = NULL;
2573       gint column_handled_click = FALSE;
2574       gboolean row_double_click = FALSE;
2575       gboolean rtl;
2576       gboolean node_selected;
2577
2578       /* Empty tree? */
2579       if (tree_view->priv->tree == NULL)
2580         {
2581           grab_focus_and_unset_draw_keyfocus (tree_view);
2582           return TRUE;
2583         }
2584
2585       /* are we in an arrow? */
2586       if (tree_view->priv->prelight_node &&
2587           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2588           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2589         {
2590           if (event->button == 1)
2591             {
2592               gtk_grab_add (widget);
2593               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2594               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2595               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2596                                               tree_view->priv->prelight_tree,
2597                                               tree_view->priv->prelight_node);
2598             }
2599
2600           grab_focus_and_unset_draw_keyfocus (tree_view);
2601           return TRUE;
2602         }
2603
2604       /* find the node that was clicked */
2605       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2606       if (new_y < 0)
2607         new_y = 0;
2608       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2609
2610       if (node == NULL)
2611         {
2612           /* We clicked in dead space */
2613           grab_focus_and_unset_draw_keyfocus (tree_view);
2614           return TRUE;
2615         }
2616
2617       /* Get the path and the node */
2618       path = _gtk_tree_view_find_path (tree_view, tree, node);
2619       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2620
2621       if (!path_is_selectable)
2622         {
2623           gtk_tree_path_free (path);
2624           grab_focus_and_unset_draw_keyfocus (tree_view);
2625           return TRUE;
2626         }
2627
2628       depth = gtk_tree_path_get_depth (path);
2629       background_area.y = y_offset + event->y;
2630       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2631       background_area.x = 0;
2632
2633
2634       /* Let the column have a chance at selecting it. */
2635       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2636       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2637            list; list = (rtl ? list->prev : list->next))
2638         {
2639           GtkTreeViewColumn *candidate = list->data;
2640
2641           if (!candidate->visible)
2642             continue;
2643
2644           background_area.width = candidate->width;
2645           if ((background_area.x > (gint) event->x) ||
2646               (background_area.x + background_area.width <= (gint) event->x))
2647             {
2648               background_area.x += background_area.width;
2649               continue;
2650             }
2651
2652           /* we found the focus column */
2653           column = candidate;
2654           cell_area = background_area;
2655           cell_area.width -= horizontal_separator;
2656           cell_area.height -= vertical_separator;
2657           cell_area.x += horizontal_separator/2;
2658           cell_area.y += vertical_separator/2;
2659           if (gtk_tree_view_is_expander_column (tree_view, column))
2660             {
2661               if (!rtl)
2662                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2663               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2664
2665               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2666                 {
2667                   if (!rtl)
2668                     cell_area.x += depth * tree_view->priv->expander_size;
2669                   cell_area.width -= depth * tree_view->priv->expander_size;
2670                 }
2671             }
2672           break;
2673         }
2674
2675       if (column == NULL)
2676         {
2677           gtk_tree_path_free (path);
2678           grab_focus_and_unset_draw_keyfocus (tree_view);
2679           return FALSE;
2680         }
2681
2682       tree_view->priv->focus_column = column;
2683
2684       /* decide if we edit */
2685       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2686           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2687         {
2688           GtkTreePath *anchor;
2689           GtkTreeIter iter;
2690
2691           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2692           gtk_tree_view_column_cell_set_cell_data (column,
2693                                                    tree_view->priv->model,
2694                                                    &iter,
2695                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2696                                                    node->children?TRUE:FALSE);
2697
2698           if (tree_view->priv->anchor)
2699             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2700           else
2701             anchor = NULL;
2702
2703           if ((anchor && !gtk_tree_path_compare (anchor, path))
2704               || !_gtk_tree_view_column_has_editable_cell (column))
2705             {
2706               GtkCellEditable *cell_editable = NULL;
2707
2708               /* FIXME: get the right flags */
2709               guint flags = 0;
2710
2711               path_string = gtk_tree_path_to_string (path);
2712
2713               if (_gtk_tree_view_column_cell_event (column,
2714                                                     &cell_editable,
2715                                                     (GdkEvent *)event,
2716                                                     path_string,
2717                                                     &background_area,
2718                                                     &cell_area, flags))
2719                 {
2720                   if (cell_editable != NULL)
2721                     {
2722                       gint left, right;
2723                       GdkRectangle area;
2724
2725                       area = cell_area;
2726                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2727
2728                       area.x += left;
2729                       area.width -= right + left;
2730
2731                       gtk_tree_view_real_start_editing (tree_view,
2732                                                         column,
2733                                                         path,
2734                                                         cell_editable,
2735                                                         &area,
2736                                                         (GdkEvent *)event,
2737                                                         flags);
2738                       g_free (path_string);
2739                       gtk_tree_path_free (path);
2740                       gtk_tree_path_free (anchor);
2741                       return TRUE;
2742                     }
2743                   column_handled_click = TRUE;
2744                 }
2745               g_free (path_string);
2746             }
2747           if (anchor)
2748             gtk_tree_path_free (anchor);
2749         }
2750
2751       /* select */
2752       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2753       pre_val = tree_view->priv->vadjustment->value;
2754
2755       /* we only handle selection modifications on the first button press
2756        */
2757       if (event->type == GDK_BUTTON_PRESS)
2758         {
2759           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2760             tree_view->priv->ctrl_pressed = TRUE;
2761           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2762             tree_view->priv->shift_pressed = TRUE;
2763
2764           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2765           if (focus_cell)
2766             gtk_tree_view_column_focus_cell (column, focus_cell);
2767
2768           if (event->state & GDK_CONTROL_MASK)
2769             {
2770               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2771               gtk_tree_view_real_toggle_cursor_row (tree_view);
2772             }
2773           else if (event->state & GDK_SHIFT_MASK)
2774             {
2775               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2776               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2777             }
2778           else
2779             {
2780               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2781             }
2782
2783           tree_view->priv->ctrl_pressed = FALSE;
2784           tree_view->priv->shift_pressed = FALSE;
2785         }
2786
2787       /* the treeview may have been scrolled because of _set_cursor,
2788        * correct here
2789        */
2790
2791       aft_val = tree_view->priv->vadjustment->value;
2792       dval = pre_val - aft_val;
2793
2794       cell_area.y += dval;
2795       background_area.y += dval;
2796
2797       /* Save press to possibly begin a drag
2798        */
2799       if (!column_handled_click &&
2800           !tree_view->priv->in_grab &&
2801           tree_view->priv->pressed_button < 0)
2802         {
2803           tree_view->priv->pressed_button = event->button;
2804           tree_view->priv->press_start_x = event->x;
2805           tree_view->priv->press_start_y = event->y;
2806
2807           if (tree_view->priv->rubber_banding_enable
2808               && !node_selected
2809               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2810             {
2811               tree_view->priv->press_start_y += tree_view->priv->dy;
2812               tree_view->priv->rubber_band_x = event->x;
2813               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2814               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2815
2816               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2817                 tree_view->priv->rubber_band_ctrl = TRUE;
2818               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2819                 tree_view->priv->rubber_band_shift = TRUE;
2820             }
2821         }
2822
2823       /* Test if a double click happened on the same row. */
2824       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2825         {
2826           int double_click_time, double_click_distance;
2827
2828           g_object_get (gtk_settings_get_default (),
2829                         "gtk-double-click-time", &double_click_time,
2830                         "gtk-double-click-distance", &double_click_distance,
2831                         NULL);
2832
2833           /* Same conditions as _gdk_event_button_generate */
2834           if (tree_view->priv->last_button_x != -1 &&
2835               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2836               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2837               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2838             {
2839               /* We do no longer compare paths of this row and the
2840                * row clicked previously.  We use the double click
2841                * distance to decide whether this is a valid click,
2842                * allowing the mouse to slightly move over another row.
2843                */
2844               row_double_click = TRUE;
2845
2846               tree_view->priv->last_button_time = 0;
2847               tree_view->priv->last_button_x = -1;
2848               tree_view->priv->last_button_y = -1;
2849             }
2850           else
2851             {
2852               tree_view->priv->last_button_time = event->time;
2853               tree_view->priv->last_button_x = event->x;
2854               tree_view->priv->last_button_y = event->y;
2855             }
2856         }
2857
2858       if (row_double_click)
2859         {
2860           gtk_grab_remove (widget);
2861           gtk_tree_view_row_activated (tree_view, path, column);
2862
2863           if (tree_view->priv->pressed_button == event->button)
2864             tree_view->priv->pressed_button = -1;
2865         }
2866
2867       gtk_tree_path_free (path);
2868
2869       /* If we activated the row through a double click we don't want to grab
2870        * focus back, as moving focus to another widget is pretty common.
2871        */
2872       if (!row_double_click)
2873         grab_focus_and_unset_draw_keyfocus (tree_view);
2874
2875       return TRUE;
2876     }
2877
2878   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2879    */
2880   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2881     {
2882       column = list->data;
2883       if (event->window == column->window &&
2884           column->resizable &&
2885           column->window)
2886         {
2887           GtkAllocation button_allocation;
2888           gpointer drag_data;
2889
2890           if (event->type == GDK_2BUTTON_PRESS &&
2891               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2892             {
2893               column->use_resized_width = FALSE;
2894               _gtk_tree_view_column_autosize (tree_view, column);
2895               return TRUE;
2896             }
2897
2898           if (gdk_pointer_grab (column->window, FALSE,
2899                                 GDK_POINTER_MOTION_HINT_MASK |
2900                                 GDK_BUTTON1_MOTION_MASK |
2901                                 GDK_BUTTON_RELEASE_MASK,
2902                                 NULL, NULL, event->time))
2903             return FALSE;
2904
2905           gtk_grab_add (widget);
2906           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2907           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2908
2909           /* block attached dnd signal handler */
2910           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2911           if (drag_data)
2912             g_signal_handlers_block_matched (widget,
2913                                              G_SIGNAL_MATCH_DATA,
2914                                              0, 0, NULL, NULL,
2915                                              drag_data);
2916
2917           gtk_widget_get_allocation (column->button, &button_allocation);
2918           tree_view->priv->drag_pos = i;
2919           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2920
2921           if (!gtk_widget_has_focus (widget))
2922             gtk_widget_grab_focus (widget);
2923
2924           return TRUE;
2925         }
2926     }
2927   return FALSE;
2928 }
2929
2930 /* GtkWidget::button_release_event helper */
2931 static gboolean
2932 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2933                                           GdkEventButton *event)
2934 {
2935   GtkTreeView *tree_view;
2936   GList *l;
2937   gboolean rtl;
2938
2939   tree_view = GTK_TREE_VIEW (widget);
2940
2941   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2942   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2943   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2944
2945   /* Move the button back */
2946   g_object_ref (tree_view->priv->drag_column->button);
2947   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2948   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2949   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2950   g_object_unref (tree_view->priv->drag_column->button);
2951   gtk_widget_queue_resize (widget);
2952   if (tree_view->priv->drag_column->resizable)
2953     {
2954       gdk_window_raise (tree_view->priv->drag_column->window);
2955       gdk_window_show (tree_view->priv->drag_column->window);
2956     }
2957   else
2958     gdk_window_hide (tree_view->priv->drag_column->window);
2959
2960   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2961
2962   if (rtl)
2963     {
2964       if (tree_view->priv->cur_reorder &&
2965           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2966         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2967                                          tree_view->priv->cur_reorder->right_column);
2968     }
2969   else
2970     {
2971       if (tree_view->priv->cur_reorder &&
2972           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2973         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2974                                          tree_view->priv->cur_reorder->left_column);
2975     }
2976   tree_view->priv->drag_column = NULL;
2977   gdk_window_hide (tree_view->priv->drag_window);
2978
2979   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2980     g_slice_free (GtkTreeViewColumnReorder, l->data);
2981   g_list_free (tree_view->priv->column_drag_info);
2982   tree_view->priv->column_drag_info = NULL;
2983   tree_view->priv->cur_reorder = NULL;
2984
2985   if (tree_view->priv->drag_highlight_window)
2986     gdk_window_hide (tree_view->priv->drag_highlight_window);
2987
2988   /* Reset our flags */
2989   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2990   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2991
2992   return TRUE;
2993 }
2994
2995 /* GtkWidget::button_release_event helper */
2996 static gboolean
2997 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2998                                             GdkEventButton *event)
2999 {
3000   GtkTreeView *tree_view;
3001   gpointer drag_data;
3002
3003   tree_view = GTK_TREE_VIEW (widget);
3004
3005   tree_view->priv->drag_pos = -1;
3006
3007   /* unblock attached dnd signal handler */
3008   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3009   if (drag_data)
3010     g_signal_handlers_unblock_matched (widget,
3011                                        G_SIGNAL_MATCH_DATA,
3012                                        0, 0, NULL, NULL,
3013                                        drag_data);
3014
3015   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3016   gtk_grab_remove (widget);
3017   gdk_display_pointer_ungrab (gdk_window_get_display (event->window),
3018                               event->time);
3019   return TRUE;
3020 }
3021
3022 static gboolean
3023 gtk_tree_view_button_release (GtkWidget      *widget,
3024                               GdkEventButton *event)
3025 {
3026   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3027
3028   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3029     return gtk_tree_view_button_release_drag_column (widget, event);
3030
3031   if (tree_view->priv->rubber_band_status)
3032     gtk_tree_view_stop_rubber_band (tree_view);
3033
3034   if (tree_view->priv->pressed_button == event->button)
3035     tree_view->priv->pressed_button = -1;
3036
3037   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3038     return gtk_tree_view_button_release_column_resize (widget, event);
3039
3040   if (tree_view->priv->button_pressed_node == NULL)
3041     return FALSE;
3042
3043   if (event->button == 1)
3044     {
3045       gtk_grab_remove (widget);
3046       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3047           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3048         {
3049           GtkTreePath *path = NULL;
3050
3051           path = _gtk_tree_view_find_path (tree_view,
3052                                            tree_view->priv->button_pressed_tree,
3053                                            tree_view->priv->button_pressed_node);
3054           /* Actually activate the node */
3055           if (tree_view->priv->button_pressed_node->children == NULL)
3056             gtk_tree_view_real_expand_row (tree_view, path,
3057                                            tree_view->priv->button_pressed_tree,
3058                                            tree_view->priv->button_pressed_node,
3059                                            FALSE, TRUE);
3060           else
3061             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3062                                              tree_view->priv->button_pressed_tree,
3063                                              tree_view->priv->button_pressed_node, TRUE);
3064           gtk_tree_path_free (path);
3065         }
3066
3067       tree_view->priv->button_pressed_tree = NULL;
3068       tree_view->priv->button_pressed_node = NULL;
3069     }
3070
3071   return TRUE;
3072 }
3073
3074 static gboolean
3075 gtk_tree_view_grab_broken (GtkWidget          *widget,
3076                            GdkEventGrabBroken *event)
3077 {
3078   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3079
3080   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3081     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3082
3083   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3084     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3085
3086   return TRUE;
3087 }
3088
3089 #if 0
3090 static gboolean
3091 gtk_tree_view_configure (GtkWidget *widget,
3092                          GdkEventConfigure *event)
3093 {
3094   GtkTreeView *tree_view;
3095
3096   tree_view = GTK_TREE_VIEW (widget);
3097   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3098
3099   return FALSE;
3100 }
3101 #endif
3102
3103 /* GtkWidget::motion_event function set.
3104  */
3105
3106 static gboolean
3107 coords_are_over_arrow (GtkTreeView *tree_view,
3108                        GtkRBTree   *tree,
3109                        GtkRBNode   *node,
3110                        /* these are in bin window coords */
3111                        gint         x,
3112                        gint         y)
3113 {
3114   GdkRectangle arrow;
3115   gint x2;
3116
3117   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3118     return FALSE;
3119
3120   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3121     return FALSE;
3122
3123   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3124
3125   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3126
3127   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3128
3129   arrow.width = x2 - arrow.x;
3130
3131   return (x >= arrow.x &&
3132           x < (arrow.x + arrow.width) &&
3133           y >= arrow.y &&
3134           y < (arrow.y + arrow.height));
3135 }
3136
3137 static gboolean
3138 auto_expand_timeout (gpointer data)
3139 {
3140   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3141   GtkTreePath *path;
3142
3143   if (tree_view->priv->prelight_node)
3144     {
3145       path = _gtk_tree_view_find_path (tree_view,
3146                                        tree_view->priv->prelight_tree,
3147                                        tree_view->priv->prelight_node);
3148
3149       if (tree_view->priv->prelight_node->children)
3150         gtk_tree_view_collapse_row (tree_view, path);
3151       else
3152         gtk_tree_view_expand_row (tree_view, path, FALSE);
3153
3154       gtk_tree_path_free (path);
3155     }
3156
3157   tree_view->priv->auto_expand_timeout = 0;
3158
3159   return FALSE;
3160 }
3161
3162 static void
3163 remove_auto_expand_timeout (GtkTreeView *tree_view)
3164 {
3165   if (tree_view->priv->auto_expand_timeout != 0)
3166     {
3167       g_source_remove (tree_view->priv->auto_expand_timeout);
3168       tree_view->priv->auto_expand_timeout = 0;
3169     }
3170 }
3171
3172 static void
3173 do_prelight (GtkTreeView *tree_view,
3174              GtkRBTree   *tree,
3175              GtkRBNode   *node,
3176              /* these are in bin_window coords */
3177              gint         x,
3178              gint         y)
3179 {
3180   if (tree_view->priv->prelight_tree == tree &&
3181       tree_view->priv->prelight_node == node)
3182     {
3183       /*  We are still on the same node,
3184           but we might need to take care of the arrow  */
3185
3186       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3187         {
3188           gboolean over_arrow;
3189           gboolean flag_set;
3190
3191           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3192           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3193                                              GTK_TREE_VIEW_ARROW_PRELIT);
3194
3195           if (over_arrow != flag_set)
3196             {
3197               if (over_arrow)
3198                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3199                                         GTK_TREE_VIEW_ARROW_PRELIT);
3200               else
3201                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3202                                           GTK_TREE_VIEW_ARROW_PRELIT);
3203
3204               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3205             }
3206         }
3207
3208       return;
3209     }
3210
3211   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3212     {
3213       /*  Unprelight the old node and arrow  */
3214
3215       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3216                              GTK_RBNODE_IS_PRELIT);
3217
3218       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3219           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3220         {
3221           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3222
3223           gtk_tree_view_queue_draw_arrow (tree_view,
3224                                           tree_view->priv->prelight_tree,
3225                                           tree_view->priv->prelight_node);
3226         }
3227
3228       _gtk_tree_view_queue_draw_node (tree_view,
3229                                       tree_view->priv->prelight_tree,
3230                                       tree_view->priv->prelight_node,
3231                                       NULL);
3232     }
3233
3234
3235   if (tree_view->priv->hover_expand)
3236     remove_auto_expand_timeout (tree_view);
3237
3238   /*  Set the new prelight values  */
3239   tree_view->priv->prelight_node = node;
3240   tree_view->priv->prelight_tree = tree;
3241
3242   if (!node || !tree)
3243     return;
3244
3245   /*  Prelight the new node and arrow  */
3246
3247   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3248       && coords_are_over_arrow (tree_view, tree, node, x, y))
3249     {
3250       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3251
3252       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3253     }
3254
3255   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3256
3257   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3258
3259   if (tree_view->priv->hover_expand)
3260     {
3261       tree_view->priv->auto_expand_timeout =
3262         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3263     }
3264 }
3265
3266 static void
3267 prelight_or_select (GtkTreeView *tree_view,
3268                     GtkRBTree   *tree,
3269                     GtkRBNode   *node,
3270                     /* these are in bin_window coords */
3271                     gint         x,
3272                     gint         y)
3273 {
3274   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3275
3276   if (tree_view->priv->hover_selection &&
3277       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3278       !(tree_view->priv->edited_column &&
3279         tree_view->priv->edited_column->editable_widget))
3280     {
3281       if (node)
3282         {
3283           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3284             {
3285               GtkTreePath *path;
3286
3287               path = _gtk_tree_view_find_path (tree_view, tree, node);
3288               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3289               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3290                 {
3291                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3292                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3293                 }
3294               gtk_tree_path_free (path);
3295             }
3296         }
3297
3298       else if (mode == GTK_SELECTION_SINGLE)
3299         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3300     }
3301
3302     do_prelight (tree_view, tree, node, x, y);
3303 }
3304
3305 static void
3306 ensure_unprelighted (GtkTreeView *tree_view)
3307 {
3308   do_prelight (tree_view,
3309                NULL, NULL,
3310                -1000, -1000); /* coords not possibly over an arrow */
3311
3312   g_assert (tree_view->priv->prelight_node == NULL);
3313 }
3314
3315 static void
3316 update_prelight (GtkTreeView *tree_view,
3317                  gint         x,
3318                  gint         y)
3319 {
3320   int new_y;
3321   GtkRBTree *tree;
3322   GtkRBNode *node;
3323
3324   if (tree_view->priv->tree == NULL)
3325     return;
3326
3327   if (x == -10000)
3328     {
3329       ensure_unprelighted (tree_view);
3330       return;
3331     }
3332
3333   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3334   if (new_y < 0)
3335     new_y = 0;
3336
3337   _gtk_rbtree_find_offset (tree_view->priv->tree,
3338                            new_y, &tree, &node);
3339
3340   if (node)
3341     prelight_or_select (tree_view, tree, node, x, y);
3342 }
3343
3344
3345
3346
3347 /* Our motion arrow is either a box (in the case of the original spot)
3348  * or an arrow.  It is expander_size wide.
3349  */
3350 /*
3351  * 11111111111111
3352  * 01111111111110
3353  * 00111111111100
3354  * 00011111111000
3355  * 00001111110000
3356  * 00000111100000
3357  * 00000111100000
3358  * 00000111100000
3359  * ~ ~ ~ ~ ~ ~ ~
3360  * 00000111100000
3361  * 00000111100000
3362  * 00000111100000
3363  * 00001111110000
3364  * 00011111111000
3365  * 00111111111100
3366  * 01111111111110
3367  * 11111111111111
3368  */
3369
3370 static void
3371 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3372 {
3373   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3374   GtkWidget *widget = GTK_WIDGET (tree_view);
3375   cairo_surface_t *mask_image;
3376   cairo_region_t *mask_region;
3377   gint x;
3378   gint y;
3379   gint width;
3380   gint height;
3381   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3382   GdkWindowAttr attributes;
3383   guint attributes_mask;
3384   cairo_t *cr;
3385
3386   if (!reorder ||
3387       reorder->left_column == tree_view->priv->drag_column ||
3388       reorder->right_column == tree_view->priv->drag_column)
3389     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3390   else if (reorder->left_column || reorder->right_column)
3391     {
3392       GtkAllocation left_allocation, right_allocation;
3393       GdkRectangle visible_rect;
3394
3395       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3396       if (reorder->left_column)
3397         {
3398           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3399           x = left_allocation.x + left_allocation.width;
3400         }
3401       else
3402         {
3403           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3404           x = right_allocation.x;
3405         }
3406
3407       if (x < visible_rect.x)
3408         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3409       else if (x > visible_rect.x + visible_rect.width)
3410         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3411       else
3412         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3413     }
3414
3415   /* We want to draw the rectangle over the initial location. */
3416   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3417     {
3418       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3419         {
3420           GtkAllocation drag_allocation;
3421
3422           if (tree_view->priv->drag_highlight_window)
3423             {
3424               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3425                                         NULL);
3426               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3427             }
3428
3429           attributes.window_type = GDK_WINDOW_CHILD;
3430           attributes.wclass = GDK_INPUT_OUTPUT;
3431           attributes.x = tree_view->priv->drag_column_x;
3432           attributes.y = 0;
3433           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3434           width = attributes.width = drag_allocation.width;
3435           height = attributes.height = drag_allocation.height;
3436           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3437           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3438           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3439           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3440           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3441
3442           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3443           cr = cairo_create (mask_image);
3444
3445           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3446           cairo_stroke (cr);
3447           cairo_destroy (cr);
3448
3449           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3450           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3451                                            mask_region, 0, 0);
3452
3453           cairo_region_destroy (mask_region);
3454           cairo_surface_destroy (mask_image);
3455
3456           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3457         }
3458     }
3459   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3460     {
3461       GtkAllocation button_allocation;
3462
3463       width = tree_view->priv->expander_size;
3464
3465       /* Get x, y, width, height of arrow */
3466       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3467       if (reorder->left_column)
3468         {
3469           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3470           x += button_allocation.x + button_allocation.width - width/2;
3471           height = button_allocation.height;
3472         }
3473       else
3474         {
3475           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3476           x += button_allocation.x - width/2;
3477           height = button_allocation.height;
3478         }
3479       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3480       height += tree_view->priv->expander_size;
3481
3482       /* Create the new window */
3483       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3484         {
3485           if (tree_view->priv->drag_highlight_window)
3486             {
3487               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3488                                         NULL);
3489               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3490             }
3491
3492           attributes.window_type = GDK_WINDOW_TEMP;
3493           attributes.wclass = GDK_INPUT_OUTPUT;
3494           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3495           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3496           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3497           attributes.x = x;
3498           attributes.y = y;
3499           attributes.width = width;
3500           attributes.height = height;
3501           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3502                                                                    &attributes, attributes_mask);
3503           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3504
3505           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3506
3507           cr = cairo_create (mask_image);
3508           cairo_move_to (cr, 0, 0);
3509           cairo_line_to (cr, width, 0);
3510           cairo_line_to (cr, width / 2., width / 2);
3511           cairo_move_to (cr, 0, height);
3512           cairo_line_to (cr, width, height);
3513           cairo_line_to (cr, width / 2., height - width / 2.);
3514           cairo_fill (cr);
3515           cairo_destroy (cr);
3516
3517           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3518           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3519                                            mask_region, 0, 0);
3520
3521           cairo_region_destroy (mask_region);
3522           cairo_surface_destroy (mask_image);
3523         }
3524
3525       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3526       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3527     }
3528   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3529            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3530     {
3531       GtkAllocation allocation;
3532
3533       width = tree_view->priv->expander_size;
3534
3535       /* Get x, y, width, height of arrow */
3536       width = width/2; /* remember, the arrow only takes half the available width */
3537       gdk_window_get_origin (gtk_widget_get_window (widget),
3538                              &x, &y);
3539       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3540         {
3541           gtk_widget_get_allocation (widget, &allocation);
3542           x += allocation.width - width;
3543         }
3544
3545       if (reorder->left_column)
3546         {
3547           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3548           height = allocation.height;
3549         }
3550       else
3551         {
3552           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3553           height = allocation.height;
3554         }
3555
3556       y -= tree_view->priv->expander_size;
3557       height += 2*tree_view->priv->expander_size;
3558
3559       /* Create the new window */
3560       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3561           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3562         {
3563           if (tree_view->priv->drag_highlight_window)
3564             {
3565               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3566                                         NULL);
3567               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3568             }
3569
3570           attributes.window_type = GDK_WINDOW_TEMP;
3571           attributes.wclass = GDK_INPUT_OUTPUT;
3572           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3573           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3574           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3575           attributes.x = x;
3576           attributes.y = y;
3577           attributes.width = width;
3578           attributes.height = height;
3579           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3580           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3581
3582           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3583
3584           cr = cairo_create (mask_image);
3585           /* mirror if we're on the left */
3586           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3587             {
3588               cairo_translate (cr, width, 0);
3589               cairo_scale (cr, -1, 1);
3590             }
3591           cairo_move_to (cr, 0, 0);
3592           cairo_line_to (cr, width, width);
3593           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3594           cairo_move_to (cr, 0, height);
3595           cairo_line_to (cr, width, height - width);
3596           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3597           cairo_fill (cr);
3598           cairo_destroy (cr);
3599
3600           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3601           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3602                                            mask_region, 0, 0);
3603
3604           cairo_region_destroy (mask_region);
3605           cairo_surface_destroy (mask_image);
3606         }
3607
3608       tree_view->priv->drag_column_window_state = arrow_type;
3609       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3610    }
3611   else
3612     {
3613       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3614       gdk_window_hide (tree_view->priv->drag_highlight_window);
3615       return;
3616     }
3617
3618   gdk_window_show (tree_view->priv->drag_highlight_window);
3619   gdk_window_raise (tree_view->priv->drag_highlight_window);
3620 }
3621
3622 static gboolean
3623 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3624                                     GdkEventMotion *event)
3625 {
3626   gint x;
3627   gint new_width;
3628   GtkTreeViewColumn *column;
3629   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3630
3631   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3632
3633   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3634     gtk_widget_get_pointer (widget, &x, NULL);
3635   else
3636     x = event->x;
3637
3638   if (tree_view->priv->hadjustment)
3639     x += tree_view->priv->hadjustment->value;
3640
3641   new_width = gtk_tree_view_new_column_width (tree_view,
3642                                               tree_view->priv->drag_pos, &x);
3643   if (x != tree_view->priv->x_drag &&
3644       (new_width != column->fixed_width))
3645     {
3646       column->use_resized_width = TRUE;
3647       column->resized_width = new_width;
3648       if (column->expand)
3649         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3650       gtk_widget_queue_resize (widget);
3651     }
3652
3653   return FALSE;
3654 }
3655
3656
3657 static void
3658 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3659 {
3660   GtkTreeViewColumnReorder *reorder = NULL;
3661   GList *list;
3662   gint mouse_x;
3663
3664   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3665   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3666     {
3667       reorder = (GtkTreeViewColumnReorder *) list->data;
3668       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3669         break;
3670       reorder = NULL;
3671     }
3672
3673   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3674       return;*/
3675
3676   tree_view->priv->cur_reorder = reorder;
3677   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3678 }
3679
3680 static void
3681 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3682 {
3683   GdkRectangle visible_rect;
3684   gint y;
3685   gint offset;
3686
3687   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3688   y += tree_view->priv->dy;
3689
3690   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3691
3692   /* see if we are near the edge. */
3693   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3694   if (offset > 0)
3695     {
3696       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3697       if (offset < 0)
3698         return;
3699     }
3700
3701   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3702                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3703 }
3704
3705 static gboolean
3706 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3707 {
3708   GdkRectangle visible_rect;
3709   gint x;
3710   gint offset;
3711
3712   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3713
3714   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715
3716   /* See if we are near the edge. */
3717   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3718   if (offset > 0)
3719     {
3720       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3721       if (offset < 0)
3722         return TRUE;
3723     }
3724   offset = offset/3;
3725
3726   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3727                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3728
3729   return TRUE;
3730
3731 }
3732
3733 static gboolean
3734 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3735                                   GdkEventMotion *event)
3736 {
3737   GtkAllocation allocation, button_allocation;
3738   GtkTreeView *tree_view = (GtkTreeView *) widget;
3739   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3740   gint x, y;
3741
3742   /* Sanity Check */
3743   if ((column == NULL) ||
3744       (event->window != tree_view->priv->drag_window))
3745     return FALSE;
3746
3747   /* Handle moving the header */
3748   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3749   gtk_widget_get_allocation (widget, &allocation);
3750   gtk_widget_get_allocation (column->button, &button_allocation);
3751   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3752              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3753   gdk_window_move (tree_view->priv->drag_window, x, y);
3754
3755   /* autoscroll, if needed */
3756   gtk_tree_view_horizontal_autoscroll (tree_view);
3757   /* Update the current reorder position and arrow; */
3758   gtk_tree_view_update_current_reorder (tree_view);
3759
3760   return TRUE;
3761 }
3762
3763 static void
3764 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3765 {
3766   remove_scroll_timeout (tree_view);
3767   gtk_grab_remove (GTK_WIDGET (tree_view));
3768
3769   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3770     {
3771       GtkTreePath *tmp_path;
3772
3773       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3774
3775       /* The anchor path should be set to the start path */
3776       tmp_path = _gtk_tree_view_find_path (tree_view,
3777                                            tree_view->priv->rubber_band_start_tree,
3778                                            tree_view->priv->rubber_band_start_node);
3779
3780       if (tree_view->priv->anchor)
3781         gtk_tree_row_reference_free (tree_view->priv->anchor);
3782
3783       tree_view->priv->anchor =
3784         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3785                                           tree_view->priv->model,
3786                                           tmp_path);
3787
3788       gtk_tree_path_free (tmp_path);
3789
3790       /* ... and the cursor to the end path */
3791       tmp_path = _gtk_tree_view_find_path (tree_view,
3792                                            tree_view->priv->rubber_band_end_tree,
3793                                            tree_view->priv->rubber_band_end_node);
3794       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3795       gtk_tree_path_free (tmp_path);
3796
3797       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3798     }
3799
3800   /* Clear status variables */
3801   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3802   tree_view->priv->rubber_band_shift = 0;
3803   tree_view->priv->rubber_band_ctrl = 0;
3804
3805   tree_view->priv->rubber_band_start_node = NULL;
3806   tree_view->priv->rubber_band_start_tree = NULL;
3807   tree_view->priv->rubber_band_end_node = NULL;
3808   tree_view->priv->rubber_band_end_tree = NULL;
3809 }
3810
3811 static void
3812 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3813                                                  GtkRBTree   *start_tree,
3814                                                  GtkRBNode   *start_node,
3815                                                  GtkRBTree   *end_tree,
3816                                                  GtkRBNode   *end_node,
3817                                                  gboolean     select,
3818                                                  gboolean     skip_start,
3819                                                  gboolean     skip_end)
3820 {
3821   if (start_node == end_node)
3822     return;
3823
3824   /* We skip the first node and jump inside the loop */
3825   if (skip_start)
3826     goto skip_first;
3827
3828   do
3829     {
3830       /* Small optimization by assuming insensitive nodes are never
3831        * selected.
3832        */
3833       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3834         {
3835           GtkTreePath *path;
3836           gboolean selectable;
3837
3838           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3839           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3840           gtk_tree_path_free (path);
3841
3842           if (!selectable)
3843             goto node_not_selectable;
3844         }
3845
3846       if (select)
3847         {
3848           if (tree_view->priv->rubber_band_shift)
3849             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3850           else if (tree_view->priv->rubber_band_ctrl)
3851             {
3852               /* Toggle the selection state */
3853               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3854                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3855               else
3856                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3857             }
3858           else
3859             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3860         }
3861       else
3862         {
3863           /* Mirror the above */
3864           if (tree_view->priv->rubber_band_shift)
3865             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3866           else if (tree_view->priv->rubber_band_ctrl)
3867             {
3868               /* Toggle the selection state */
3869               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3870                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3871               else
3872                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3873             }
3874           else
3875             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3876         }
3877
3878       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3879
3880 node_not_selectable:
3881       if (start_node == end_node)
3882         break;
3883
3884 skip_first:
3885
3886       if (start_node->children)
3887         {
3888           start_tree = start_node->children;
3889           start_node = start_tree->root;
3890           while (start_node->left != start_tree->nil)
3891             start_node = start_node->left;
3892         }
3893       else
3894         {
3895           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3896
3897           if (!start_tree)
3898             /* Ran out of tree */
3899             break;
3900         }
3901
3902       if (skip_end && start_node == end_node)
3903         break;
3904     }
3905   while (TRUE);
3906 }
3907
3908 static void
3909 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3910 {
3911   GtkRBTree *start_tree, *end_tree;
3912   GtkRBNode *start_node, *end_node;
3913
3914   _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);
3915   _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);
3916
3917   /* Handle the start area first */
3918   if (!tree_view->priv->rubber_band_start_node)
3919     {
3920       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3921                                                        start_tree,
3922                                                        start_node,
3923                                                        end_tree,
3924                                                        end_node,
3925                                                        TRUE,
3926                                                        FALSE,
3927                                                        FALSE);
3928     }
3929   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3930            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3931     {
3932       /* New node is above the old one; selection became bigger */
3933       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3934                                                        start_tree,
3935                                                        start_node,
3936                                                        tree_view->priv->rubber_band_start_tree,
3937                                                        tree_view->priv->rubber_band_start_node,
3938                                                        TRUE,
3939                                                        FALSE,
3940                                                        TRUE);
3941     }
3942   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3943            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3944     {
3945       /* New node is below the old one; selection became smaller */
3946       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3947                                                        tree_view->priv->rubber_band_start_tree,
3948                                                        tree_view->priv->rubber_band_start_node,
3949                                                        start_tree,
3950                                                        start_node,
3951                                                        FALSE,
3952                                                        FALSE,
3953                                                        TRUE);
3954     }
3955
3956   tree_view->priv->rubber_band_start_tree = start_tree;
3957   tree_view->priv->rubber_band_start_node = start_node;
3958
3959   /* Next, handle the end area */
3960   if (!tree_view->priv->rubber_band_end_node)
3961     {
3962       /* In the event this happens, start_node was also NULL; this case is
3963        * handled above.
3964        */
3965     }
3966   else if (!end_node)
3967     {
3968       /* Find the last node in the tree */
3969       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3970                                &end_tree, &end_node);
3971
3972       /* Selection reached end of the tree */
3973       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3974                                                        tree_view->priv->rubber_band_end_tree,
3975                                                        tree_view->priv->rubber_band_end_node,
3976                                                        end_tree,
3977                                                        end_node,
3978                                                        TRUE,
3979                                                        TRUE,
3980                                                        FALSE);
3981     }
3982   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3983            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3984     {
3985       /* New node is below the old one; selection became bigger */
3986       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3987                                                        tree_view->priv->rubber_band_end_tree,
3988                                                        tree_view->priv->rubber_band_end_node,
3989                                                        end_tree,
3990                                                        end_node,
3991                                                        TRUE,
3992                                                        TRUE,
3993                                                        FALSE);
3994     }
3995   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3996            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3997     {
3998       /* New node is above the old one; selection became smaller */
3999       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4000                                                        end_tree,
4001                                                        end_node,
4002                                                        tree_view->priv->rubber_band_end_tree,
4003                                                        tree_view->priv->rubber_band_end_node,
4004                                                        FALSE,
4005                                                        TRUE,
4006                                                        FALSE);
4007     }
4008
4009   tree_view->priv->rubber_band_end_tree = end_tree;
4010   tree_view->priv->rubber_band_end_node = end_node;
4011 }
4012
4013 static void
4014 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4015 {
4016   gint x, y;
4017   GdkRectangle old_area;
4018   GdkRectangle new_area;
4019   GdkRectangle common;
4020   cairo_region_t *invalid_region;
4021
4022   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4023   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4024   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4025   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4026
4027   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4028
4029   x = MAX (x, 0);
4030   y = MAX (y, 0) + tree_view->priv->dy;
4031
4032   new_area.x = MIN (tree_view->priv->press_start_x, x);
4033   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4034   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4035   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4036
4037   invalid_region = cairo_region_create_rectangle (&old_area);
4038   cairo_region_union_rectangle (invalid_region, &new_area);
4039
4040   gdk_rectangle_intersect (&old_area, &new_area, &common);
4041   if (common.width > 2 && common.height > 2)
4042     {
4043       cairo_region_t *common_region;
4044
4045       /* make sure the border is invalidated */
4046       common.x += 1;
4047       common.y += 1;
4048       common.width -= 2;
4049       common.height -= 2;
4050
4051       common_region = cairo_region_create_rectangle (&common);
4052
4053       cairo_region_subtract (invalid_region, common_region);
4054       cairo_region_destroy (common_region);
4055     }
4056
4057   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4058
4059   cairo_region_destroy (invalid_region);
4060
4061   tree_view->priv->rubber_band_x = x;
4062   tree_view->priv->rubber_band_y = y;
4063
4064   gtk_tree_view_update_rubber_band_selection (tree_view);
4065 }
4066
4067 static void
4068 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4069                                  cairo_t      *cr)
4070 {
4071   GdkRectangle rect;
4072   GtkStyle *style;
4073
4074   cairo_save (cr);
4075
4076   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4077   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4078   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4079   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4080
4081   cairo_set_line_width (cr, 1.0);
4082
4083   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4084
4085   gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]);
4086
4087   gdk_cairo_rectangle (cr, &rect);
4088   cairo_clip (cr);
4089   cairo_paint_with_alpha (cr, 0.25);
4090
4091   cairo_rectangle (cr,
4092                    rect.x + 0.5, rect.y + 0.5,
4093                    rect.width - 1, rect.height - 1);
4094   cairo_stroke (cr);
4095
4096   cairo_restore (cr);
4097 }
4098
4099 static gboolean
4100 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4101                                  GdkEventMotion *event)
4102 {
4103   GtkTreeView *tree_view;
4104   GtkRBTree *tree;
4105   GtkRBNode *node;
4106   gint new_y;
4107
4108   tree_view = (GtkTreeView *) widget;
4109
4110   if (tree_view->priv->tree == NULL)
4111     return FALSE;
4112
4113   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4114     {
4115       gtk_grab_add (GTK_WIDGET (tree_view));
4116       gtk_tree_view_update_rubber_band (tree_view);
4117
4118       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4119     }
4120   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4121     {
4122       gtk_tree_view_update_rubber_band (tree_view);
4123
4124       add_scroll_timeout (tree_view);
4125     }
4126
4127   /* only check for an initiated drag when a button is pressed */
4128   if (tree_view->priv->pressed_button >= 0
4129       && !tree_view->priv->rubber_band_status)
4130     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4131
4132   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4133   if (new_y < 0)
4134     new_y = 0;
4135
4136   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4137
4138   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4139   if ((tree_view->priv->button_pressed_node != NULL) &&
4140       (tree_view->priv->button_pressed_node != node))
4141     node = NULL;
4142
4143   tree_view->priv->event_last_x = event->x;
4144   tree_view->priv->event_last_y = event->y;
4145
4146   prelight_or_select (tree_view, tree, node, event->x, event->y);
4147
4148   return TRUE;
4149 }
4150
4151 static gboolean
4152 gtk_tree_view_motion (GtkWidget      *widget,
4153                       GdkEventMotion *event)
4154 {
4155   GtkTreeView *tree_view;
4156
4157   tree_view = (GtkTreeView *) widget;
4158
4159   /* Resizing a column */
4160   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4161     return gtk_tree_view_motion_resize_column (widget, event);
4162
4163   /* Drag column */
4164   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4165     return gtk_tree_view_motion_drag_column (widget, event);
4166
4167   /* Sanity check it */
4168   if (event->window == tree_view->priv->bin_window)
4169     return gtk_tree_view_motion_bin_window (widget, event);
4170
4171   return FALSE;
4172 }
4173
4174 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4175  * the tree is empty.
4176  */
4177 static void
4178 invalidate_empty_focus (GtkTreeView *tree_view)
4179 {
4180   GdkRectangle area;
4181
4182   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4183     return;
4184
4185   area.x = 0;
4186   area.y = 0;
4187   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4188   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4189   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4190 }
4191
4192 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4193  * is empty.
4194  */
4195 static void
4196 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4197 {
4198   GtkWidget *widget = GTK_WIDGET (tree_view);
4199   gint w, h;
4200
4201   if (!gtk_widget_has_focus (widget))
4202     return;
4203
4204   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4205   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4206
4207   if (w > 0 && h > 0)
4208     gtk_paint_focus (gtk_widget_get_style (widget),
4209                      cr,
4210                      gtk_widget_get_state (widget),
4211                      widget,
4212                      NULL,
4213                      1, 1, w, h);
4214 }
4215
4216 typedef enum {
4217   GTK_TREE_VIEW_GRID_LINE,
4218   GTK_TREE_VIEW_TREE_LINE,
4219   GTK_TREE_VIEW_FOREGROUND_LINE
4220 } GtkTreeViewLineType;
4221
4222 static void
4223 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4224                          cairo_t             *cr,
4225                          GtkTreeViewLineType  type,
4226                          int                  x1,
4227                          int                  y1,
4228                          int                  x2,
4229                          int                  y2)
4230 {
4231   cairo_save (cr);
4232
4233   switch (type)
4234     {
4235     case GTK_TREE_VIEW_TREE_LINE:
4236       cairo_set_source_rgb (cr, 0, 0, 0);
4237       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4238       if (tree_view->priv->tree_line_dashes[0])
4239         cairo_set_dash (cr,
4240                         tree_view->priv->tree_line_dashes,
4241                         2, 0.5);
4242       break;
4243     case GTK_TREE_VIEW_GRID_LINE:
4244       cairo_set_source_rgb (cr, 0, 0, 0);
4245       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4246       if (tree_view->priv->grid_line_dashes[0])
4247         cairo_set_dash (cr,
4248                         tree_view->priv->grid_line_dashes,
4249                         2, 0.5);
4250       break;
4251     default:
4252       g_assert_not_reached ();
4253       /* fall through */
4254     case GTK_TREE_VIEW_FOREGROUND_LINE:
4255       cairo_set_line_width (cr, 1.0);
4256       gdk_cairo_set_source_color (cr,
4257                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4258       break;
4259     }
4260
4261   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4262   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4263   cairo_stroke (cr);
4264
4265   cairo_restore (cr);
4266 }
4267
4268 static void
4269 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4270                                cairo_t        *cr,
4271                                gint            n_visible_columns)
4272 {
4273   GList *list = tree_view->priv->columns;
4274   gint i = 0;
4275   gint current_x = 0;
4276
4277   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4278       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4279     return;
4280
4281   /* Only draw the lines for visible rows and columns */
4282   for (list = tree_view->priv->columns; list; list = list->next, i++)
4283     {
4284       GtkTreeViewColumn *column = list->data;
4285
4286       /* We don't want a line for the last column */
4287       if (i == n_visible_columns - 1)
4288         break;
4289
4290       if (! column->visible)
4291         continue;
4292
4293       current_x += column->width;
4294
4295       gtk_tree_view_draw_line (tree_view, cr,
4296                                GTK_TREE_VIEW_GRID_LINE,
4297                                current_x - 1, 0,
4298                                current_x - 1, tree_view->priv->height);
4299     }
4300 }
4301
4302 /* Warning: Very scary function.
4303  * Modify at your own risk
4304  *
4305  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4306  * FIXME: It's not...
4307  */
4308 static gboolean
4309 gtk_tree_view_bin_draw (GtkWidget      *widget,
4310                         cairo_t        *cr)
4311 {
4312   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4313   GtkTreePath *path;
4314   GtkStyle *style;
4315   GtkRBTree *tree;
4316   GList *list;
4317   GtkRBNode *node;
4318   GtkRBNode *cursor = NULL;
4319   GtkRBTree *cursor_tree = NULL;
4320   GtkRBNode *drag_highlight = NULL;
4321   GtkRBTree *drag_highlight_tree = NULL;
4322   GtkTreeIter iter;
4323   gint new_y;
4324   gint y_offset, cell_offset;
4325   gint max_height;
4326   gint depth;
4327   GdkRectangle background_area;
4328   GdkRectangle cell_area;
4329   GdkRectangle clip;
4330   guint flags;
4331   gint highlight_x;
4332   gint expander_cell_width;
4333   gint bin_window_width;
4334   gint bin_window_height;
4335   GtkTreePath *cursor_path;
4336   GtkTreePath *drag_dest_path;
4337   GList *first_column, *last_column;
4338   gint vertical_separator;
4339   gint horizontal_separator;
4340   gint focus_line_width;
4341   gboolean allow_rules;
4342   gboolean has_special_cell;
4343   gboolean rtl;
4344   gint n_visible_columns;
4345   gint pointer_x, pointer_y;
4346   gint grid_line_width;
4347   gboolean got_pointer = FALSE;
4348   gboolean draw_vgrid_lines, draw_hgrid_lines;
4349
4350   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4351
4352   gtk_widget_style_get (widget,
4353                         "horizontal-separator", &horizontal_separator,
4354                         "vertical-separator", &vertical_separator,
4355                         "allow-rules", &allow_rules,
4356                         "focus-line-width", &focus_line_width,
4357                         NULL);
4358
4359   if (tree_view->priv->tree == NULL)
4360     {
4361       draw_empty_focus (tree_view, cr);
4362       return TRUE;
4363     }
4364
4365   style = gtk_widget_get_style (widget);
4366
4367   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4368   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4369   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4370   cairo_clip (cr);
4371   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4372     return TRUE;
4373
4374   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4375
4376   if (new_y < 0)
4377     new_y = 0;
4378   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4379
4380   if (tree_view->priv->height < bin_window_height)
4381     {
4382       gtk_paint_flat_box (style,
4383                           cr,
4384                           gtk_widget_get_state (widget),
4385                           GTK_SHADOW_NONE,
4386                           widget,
4387                           "cell_even",
4388                           0, tree_view->priv->height,
4389                           bin_window_width,
4390                           bin_window_height - tree_view->priv->height);
4391     }
4392
4393   if (node == NULL)
4394     return TRUE;
4395
4396   /* find the path for the node */
4397   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4398                                    tree,
4399                                    node);
4400   gtk_tree_model_get_iter (tree_view->priv->model,
4401                            &iter,
4402                            path);
4403   depth = gtk_tree_path_get_depth (path);
4404   gtk_tree_path_free (path);
4405
4406   cursor_path = NULL;
4407   drag_dest_path = NULL;
4408
4409   if (tree_view->priv->cursor)
4410     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4411
4412   if (cursor_path)
4413     _gtk_tree_view_find_node (tree_view, cursor_path,
4414                               &cursor_tree, &cursor);
4415
4416   if (tree_view->priv->drag_dest_row)
4417     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4418
4419   if (drag_dest_path)
4420     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4421                               &drag_highlight_tree, &drag_highlight);
4422
4423   draw_vgrid_lines =
4424     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4425     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4426   draw_hgrid_lines =
4427     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4428     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4429
4430   if (draw_vgrid_lines || draw_hgrid_lines)
4431     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4432
4433   n_visible_columns = 0;
4434   for (list = tree_view->priv->columns; list; list = list->next)
4435     {
4436       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4437         continue;
4438       n_visible_columns ++;
4439     }
4440
4441   /* Find the last column */
4442   for (last_column = g_list_last (tree_view->priv->columns);
4443        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4444        last_column = last_column->prev)
4445     ;
4446
4447   /* and the first */
4448   for (first_column = g_list_first (tree_view->priv->columns);
4449        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4450        first_column = first_column->next)
4451     ;
4452
4453   /* Actually process the expose event.  To do this, we want to
4454    * start at the first node of the event, and walk the tree in
4455    * order, drawing each successive node.
4456    */
4457
4458   do
4459     {
4460       gboolean parity;
4461       gboolean is_separator = FALSE;
4462       gboolean is_first = FALSE;
4463       gboolean is_last = FALSE;
4464
4465       is_separator = row_is_separator (tree_view, &iter, NULL);
4466
4467       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4468
4469       cell_offset = 0;
4470       highlight_x = 0; /* should match x coord of first cell */
4471       expander_cell_width = 0;
4472
4473       background_area.y = y_offset + clip.y;
4474       background_area.height = max_height;
4475
4476       flags = 0;
4477
4478       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4479         flags |= GTK_CELL_RENDERER_PRELIT;
4480
4481       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4482         flags |= GTK_CELL_RENDERER_SELECTED;
4483
4484       parity = _gtk_rbtree_node_find_parity (tree, node);
4485
4486       /* we *need* to set cell data on all cells before the call
4487        * to _has_special_cell, else _has_special_cell() does not
4488        * return a correct value.
4489        */
4490       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4491            list;
4492            list = (rtl ? list->prev : list->next))
4493         {
4494           GtkTreeViewColumn *column = list->data;
4495           gtk_tree_view_column_cell_set_cell_data (column,
4496                                                    tree_view->priv->model,
4497                                                    &iter,
4498                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4499                                                    node->children?TRUE:FALSE);
4500         }
4501
4502       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4503
4504       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4505            list;
4506            list = (rtl ? list->prev : list->next))
4507         {
4508           GtkTreeViewColumn *column = list->data;
4509           const gchar *detail = NULL;
4510           gchar new_detail[128];
4511           GtkStateType state;
4512
4513           if (!column->visible)
4514             continue;
4515
4516           if (cell_offset > clip.x + clip.width ||
4517               cell_offset + column->width < clip.x)
4518             {
4519               cell_offset += column->width;
4520               continue;
4521             }
4522
4523           if (column->show_sort_indicator)
4524             flags |= GTK_CELL_RENDERER_SORTED;
4525           else
4526             flags &= ~GTK_CELL_RENDERER_SORTED;
4527
4528           if (cursor == node)
4529             flags |= GTK_CELL_RENDERER_FOCUSED;
4530           else
4531             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4532
4533           background_area.x = cell_offset;
4534           background_area.width = column->width;
4535
4536           cell_area = background_area;
4537           cell_area.y += vertical_separator / 2;
4538           cell_area.x += horizontal_separator / 2;
4539           cell_area.height -= vertical_separator;
4540           cell_area.width -= horizontal_separator;
4541
4542           if (draw_vgrid_lines)
4543             {
4544               if (list == first_column)
4545                 {
4546                   cell_area.width -= grid_line_width / 2;
4547                 }
4548               else if (list == last_column)
4549                 {
4550                   cell_area.x += grid_line_width / 2;
4551                   cell_area.width -= grid_line_width / 2;
4552                 }
4553               else
4554                 {
4555                   cell_area.x += grid_line_width / 2;
4556                   cell_area.width -= grid_line_width;
4557                 }
4558             }
4559
4560           if (draw_hgrid_lines)
4561             {
4562               cell_area.y += grid_line_width / 2;
4563               cell_area.height -= grid_line_width;
4564             }
4565
4566           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4567             {
4568               cell_offset += column->width;
4569               continue;
4570             }
4571
4572           gtk_tree_view_column_cell_set_cell_data (column,
4573                                                    tree_view->priv->model,
4574                                                    &iter,
4575                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4576                                                    node->children?TRUE:FALSE);
4577
4578           /* Select the detail for drawing the cell.  relevant
4579            * factors are parity, sortedness, and whether to
4580            * display rules.
4581            */
4582           if (allow_rules && tree_view->priv->has_rules)
4583             {
4584               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4585                   n_visible_columns >= 3)
4586                 {
4587                   if (parity)
4588                     detail = "cell_odd_ruled_sorted";
4589                   else
4590                     detail = "cell_even_ruled_sorted";
4591                 }
4592               else
4593                 {
4594                   if (parity)
4595                     detail = "cell_odd_ruled";
4596                   else
4597                     detail = "cell_even_ruled";
4598                 }
4599             }
4600           else
4601             {
4602               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4603                   n_visible_columns >= 3)
4604                 {
4605                   if (parity)
4606                     detail = "cell_odd_sorted";
4607                   else
4608                     detail = "cell_even_sorted";
4609                 }
4610               else
4611                 {
4612                   if (parity)
4613                     detail = "cell_odd";
4614                   else
4615                     detail = "cell_even";
4616                 }
4617             }
4618
4619           g_assert (detail);
4620
4621           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4622             state = GTK_STATE_INSENSITIVE;
4623           else if (flags & GTK_CELL_RENDERER_SELECTED)
4624             state = GTK_STATE_SELECTED;
4625           else
4626             state = GTK_STATE_NORMAL;
4627
4628           /* Draw background */
4629           is_first = (rtl ? !list->next : !list->prev);
4630           is_last = (rtl ? !list->prev : !list->next);
4631
4632           /* (I don't like the snprintfs either, but couldn't find a
4633            * less messy way).
4634            */
4635           if (is_first && is_last)
4636             g_snprintf (new_detail, 127, "%s", detail);
4637           else if (is_first)
4638             g_snprintf (new_detail, 127, "%s_start", detail);
4639           else if (is_last)
4640             g_snprintf (new_detail, 127, "%s_end", detail);
4641           else
4642             g_snprintf (new_detail, 127, "%s_middle", detail);
4643
4644           gtk_paint_flat_box (style,
4645                               cr,
4646                               state,
4647                               GTK_SHADOW_NONE,
4648                               widget,
4649                               new_detail,
4650                               background_area.x,
4651                               background_area.y,
4652                               background_area.width,
4653                               background_area.height);
4654
4655           if (gtk_tree_view_is_expander_column (tree_view, column))
4656             {
4657               if (!rtl)
4658                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4659               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4660
4661               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4662                 {
4663                   if (!rtl)
4664                     cell_area.x += depth * tree_view->priv->expander_size;
4665                   cell_area.width -= depth * tree_view->priv->expander_size;
4666                 }
4667
4668               /* If we have an expander column, the highlight underline
4669                * starts with that column, so that it indicates which
4670                * level of the tree we're dropping at.
4671                */
4672               highlight_x = cell_area.x;
4673               expander_cell_width = cell_area.width;
4674
4675               if (is_separator)
4676                 gtk_paint_hline (style,
4677                                  cr,
4678                                  state,
4679                                  widget,
4680                                  NULL,
4681                                  cell_area.x,
4682                                  cell_area.x + cell_area.width,
4683                                  cell_area.y + cell_area.height / 2);
4684               else
4685                 _gtk_tree_view_column_cell_render (column,
4686                                                    cr,
4687                                                    &background_area,
4688                                                    &cell_area,
4689                                                    flags);
4690               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4691                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4692                 {
4693                   if (!got_pointer)
4694                     {
4695                       gdk_window_get_pointer (tree_view->priv->bin_window,
4696                                               &pointer_x, &pointer_y, NULL);
4697                       got_pointer = TRUE;
4698                     }
4699
4700                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4701                                             cr,
4702                                             tree,
4703                                             node,
4704                                             pointer_x, pointer_y);
4705                 }
4706             }
4707           else
4708             {
4709               if (is_separator)
4710                 gtk_paint_hline (style,
4711                                  cr,
4712                                  state,
4713                                  widget,
4714                                  NULL,
4715                                  cell_area.x,
4716                                  cell_area.x + cell_area.width,
4717                                  cell_area.y + cell_area.height / 2);
4718               else
4719                 _gtk_tree_view_column_cell_render (column,
4720                                                    cr,
4721                                                    &background_area,
4722                                                    &cell_area,
4723                                                    flags);
4724             }
4725
4726           if (draw_hgrid_lines)
4727             {
4728               if (background_area.y > 0)
4729                 gtk_tree_view_draw_line (tree_view, cr,
4730                                          GTK_TREE_VIEW_GRID_LINE,
4731                                          background_area.x, background_area.y,
4732                                          background_area.x + background_area.width,
4733                                          background_area.y);
4734
4735               if (y_offset + max_height >= clip.height)
4736                 gtk_tree_view_draw_line (tree_view, cr,
4737                                          GTK_TREE_VIEW_GRID_LINE,
4738                                          background_area.x, background_area.y + max_height,
4739                                          background_area.x + background_area.width,
4740                                          background_area.y + max_height);
4741             }
4742
4743           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4744               tree_view->priv->tree_lines_enabled)
4745             {
4746               gint x = background_area.x;
4747               gint mult = rtl ? -1 : 1;
4748               gint y0 = background_area.y;
4749               gint y1 = background_area.y + background_area.height/2;
4750               gint y2 = background_area.y + background_area.height;
4751
4752               if (rtl)
4753                 x += background_area.width - 1;
4754
4755               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4756                   && depth > 1)
4757                 {
4758                   gtk_tree_view_draw_line (tree_view, cr,
4759                                            GTK_TREE_VIEW_TREE_LINE,
4760                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4761                                            y1,
4762                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4763                                            y1);
4764                 }
4765               else if (depth > 1)
4766                 {
4767                   gtk_tree_view_draw_line (tree_view, cr,
4768                                            GTK_TREE_VIEW_TREE_LINE,
4769                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4770                                            y1,
4771                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4772                                            y1);
4773                 }
4774
4775               if (depth > 1)
4776                 {
4777                   gint i;
4778                   GtkRBNode *tmp_node;
4779                   GtkRBTree *tmp_tree;
4780
4781                   if (!_gtk_rbtree_next (tree, node))
4782                     gtk_tree_view_draw_line (tree_view, cr,
4783                                              GTK_TREE_VIEW_TREE_LINE,
4784                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4785                                              y0,
4786                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4787                                              y1);
4788                   else
4789                     gtk_tree_view_draw_line (tree_view, cr,
4790                                              GTK_TREE_VIEW_TREE_LINE,
4791                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4792                                              y0,
4793                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4794                                              y2);
4795
4796                   tmp_node = tree->parent_node;
4797                   tmp_tree = tree->parent_tree;
4798
4799                   for (i = depth - 2; i > 0; i--)
4800                     {
4801                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4802                         gtk_tree_view_draw_line (tree_view, cr,
4803                                                  GTK_TREE_VIEW_TREE_LINE,
4804                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4805                                                  y0,
4806                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4807                                                  y2);
4808
4809                       tmp_node = tmp_tree->parent_node;
4810                       tmp_tree = tmp_tree->parent_tree;
4811                     }
4812                 }
4813             }
4814
4815           if (node == cursor && has_special_cell &&
4816               ((column == tree_view->priv->focus_column &&
4817                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4818                 gtk_widget_has_focus (widget)) ||
4819                (column == tree_view->priv->edited_column)))
4820             {
4821               _gtk_tree_view_column_cell_draw_focus (column,
4822                                                      cr,
4823                                                      &background_area,
4824                                                      &cell_area,
4825                                                      flags);
4826             }
4827
4828           cell_offset += column->width;
4829         }
4830
4831       if (node == drag_highlight)
4832         {
4833           /* Draw indicator for the drop
4834            */
4835           gint highlight_y = -1;
4836           GtkRBTree *tree = NULL;
4837           GtkRBNode *node = NULL;
4838
4839           switch (tree_view->priv->drag_dest_pos)
4840             {
4841             case GTK_TREE_VIEW_DROP_BEFORE:
4842               highlight_y = background_area.y - 1;
4843               if (highlight_y < 0)
4844                       highlight_y = 0;
4845               break;
4846
4847             case GTK_TREE_VIEW_DROP_AFTER:
4848               highlight_y = background_area.y + background_area.height - 1;
4849               break;
4850
4851             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4852             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4853               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4854
4855               if (tree == NULL)
4856                 break;
4857
4858               gtk_paint_focus (style,
4859                                cr,
4860                                gtk_widget_get_state (widget),
4861                                widget,
4862                                (is_first
4863                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4864                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4865                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4866                                    - focus_line_width / 2,
4867                                 gdk_window_get_width (tree_view->priv->bin_window),
4868                                 ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4869                                    - focus_line_width + 1);
4870               break;
4871             }
4872
4873           if (highlight_y >= 0)
4874             {
4875               gtk_tree_view_draw_line (tree_view, cr,
4876                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4877                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4878                                        highlight_y,
4879                                        rtl ? 0 : bin_window_width,
4880                                        highlight_y);
4881             }
4882         }
4883
4884       /* draw the big row-spanning focus rectangle, if needed */
4885       if (!has_special_cell && node == cursor &&
4886           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4887           gtk_widget_has_focus (widget))
4888         {
4889           gint tmp_y, tmp_height;
4890           GtkStateType focus_rect_state;
4891
4892           focus_rect_state =
4893             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4894             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4895              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4896               GTK_STATE_NORMAL));
4897
4898           if (draw_hgrid_lines)
4899             {
4900               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4901               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4902             }
4903           else
4904             {
4905               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4906               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4907             }
4908
4909           gtk_paint_focus (style,
4910                            cr,
4911                            focus_rect_state,
4912                            widget,
4913                            (is_first
4914                             ? (is_last ? "treeview" : "treeview-left" )
4915                             : (is_last ? "treeview-right" : "treeview-middle" )),
4916                            0, tmp_y,
4917                            gdk_window_get_width (tree_view->priv->bin_window),
4918                            tmp_height);
4919         }
4920
4921       y_offset += max_height;
4922       if (node->children)
4923         {
4924           GtkTreeIter parent = iter;
4925           gboolean has_child;
4926
4927           tree = node->children;
4928           node = tree->root;
4929
4930           g_assert (node != tree->nil);
4931
4932           while (node->left != tree->nil)
4933             node = node->left;
4934           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4935                                                     &iter,
4936                                                     &parent);
4937           depth++;
4938
4939           /* Sanity Check! */
4940           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4941         }
4942       else
4943         {
4944           gboolean done = FALSE;
4945
4946           do
4947             {
4948               node = _gtk_rbtree_next (tree, node);
4949               if (node != NULL)
4950                 {
4951                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4952                   done = TRUE;
4953
4954                   /* Sanity Check! */
4955                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4956                 }
4957               else
4958                 {
4959                   GtkTreeIter parent_iter = iter;
4960                   gboolean has_parent;
4961
4962                   node = tree->parent_node;
4963                   tree = tree->parent_tree;
4964                   if (tree == NULL)
4965                     /* we should go to done to free some memory */
4966                     goto done;
4967                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4968                                                            &iter,
4969                                                            &parent_iter);
4970                   depth--;
4971
4972                   /* Sanity check */
4973                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4974                 }
4975             }
4976           while (!done);
4977         }
4978     }
4979   while (y_offset < clip.height);
4980
4981 done:
4982   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
4983
4984   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4985     gtk_tree_view_paint_rubber_band (tree_view, cr);
4986
4987   if (cursor_path)
4988     gtk_tree_path_free (cursor_path);
4989
4990   if (drag_dest_path)
4991     gtk_tree_path_free (drag_dest_path);
4992
4993   return FALSE;
4994 }
4995
4996 static gboolean
4997 gtk_tree_view_draw (GtkWidget *widget,
4998                     cairo_t   *cr)
4999 {
5000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5001
5002   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5003     {
5004       GList *tmp_list;
5005
5006       cairo_save (cr);
5007
5008       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5009
5010       gtk_tree_view_bin_draw (widget, cr);
5011
5012       cairo_restore (cr);
5013
5014       /* We can't just chain up to Container::draw as it will try to send the
5015        * event to the headers, so we handle propagating it to our children
5016        * (eg. widgets being edited) ourselves.
5017        */
5018       tmp_list = tree_view->priv->children;
5019       while (tmp_list)
5020         {
5021           GtkTreeViewChild *child = tmp_list->data;
5022           tmp_list = tmp_list->next;
5023
5024           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5025         }
5026     }
5027
5028   if (gtk_cairo_should_draw_window (cr, 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_draw (GTK_CONTAINER (tree_view),
5041                                           column->button,
5042                                           cr);
5043         }
5044     }
5045
5046   if (tree_view->priv->drag_window &&
5047       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5048     {
5049       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5050                                     tree_view->priv->drag_column->button,
5051                                     cr);
5052     }
5053
5054   return TRUE;
5055 }
5056
5057 enum
5058 {
5059   DROP_HOME,
5060   DROP_RIGHT,
5061   DROP_LEFT,
5062   DROP_END
5063 };
5064
5065 /* returns 0x1 when no column has been found -- yes it's hackish */
5066 static GtkTreeViewColumn *
5067 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5068                                GtkTreeViewColumn *column,
5069                                gint               drop_position)
5070 {
5071   GtkTreeViewColumn *left_column = NULL;
5072   GtkTreeViewColumn *cur_column = NULL;
5073   GList *tmp_list;
5074
5075   if (!column->reorderable)
5076     return (GtkTreeViewColumn *)0x1;
5077
5078   switch (drop_position)
5079     {
5080       case DROP_HOME:
5081         /* find first column where we can drop */
5082         tmp_list = tree_view->priv->columns;
5083         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5084           return (GtkTreeViewColumn *)0x1;
5085
5086         while (tmp_list)
5087           {
5088             g_assert (tmp_list);
5089
5090             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5091             tmp_list = tmp_list->next;
5092
5093             if (left_column && left_column->visible == FALSE)
5094               continue;
5095
5096             if (!tree_view->priv->column_drop_func)
5097               return left_column;
5098
5099             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5100               {
5101                 left_column = cur_column;
5102                 continue;
5103               }
5104
5105             return left_column;
5106           }
5107
5108         if (!tree_view->priv->column_drop_func)
5109           return left_column;
5110
5111         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5112           return left_column;
5113         else
5114           return (GtkTreeViewColumn *)0x1;
5115         break;
5116
5117       case DROP_RIGHT:
5118         /* find first column after column where we can drop */
5119         tmp_list = tree_view->priv->columns;
5120
5121         for (; tmp_list; tmp_list = tmp_list->next)
5122           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5123             break;
5124
5125         if (!tmp_list || !tmp_list->next)
5126           return (GtkTreeViewColumn *)0x1;
5127
5128         tmp_list = tmp_list->next;
5129         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5130         tmp_list = tmp_list->next;
5131
5132         while (tmp_list)
5133           {
5134             g_assert (tmp_list);
5135
5136             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5137             tmp_list = tmp_list->next;
5138
5139             if (left_column && left_column->visible == FALSE)
5140               {
5141                 left_column = cur_column;
5142                 if (tmp_list)
5143                   tmp_list = tmp_list->next;
5144                 continue;
5145               }
5146
5147             if (!tree_view->priv->column_drop_func)
5148               return left_column;
5149
5150             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5151               {
5152                 left_column = cur_column;
5153                 continue;
5154               }
5155
5156             return left_column;
5157           }
5158
5159         if (!tree_view->priv->column_drop_func)
5160           return left_column;
5161
5162         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5163           return left_column;
5164         else
5165           return (GtkTreeViewColumn *)0x1;
5166         break;
5167
5168       case DROP_LEFT:
5169         /* find first column before column where we can drop */
5170         tmp_list = tree_view->priv->columns;
5171
5172         for (; tmp_list; tmp_list = tmp_list->next)
5173           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5174             break;
5175
5176         if (!tmp_list || !tmp_list->prev)
5177           return (GtkTreeViewColumn *)0x1;
5178
5179         tmp_list = tmp_list->prev;
5180         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5181         tmp_list = tmp_list->prev;
5182
5183         while (tmp_list)
5184           {
5185             g_assert (tmp_list);
5186
5187             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5188
5189             if (left_column && !left_column->visible)
5190               {
5191                 /*if (!tmp_list->prev)
5192                   return (GtkTreeViewColumn *)0x1;
5193                   */
5194 /*
5195                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5196                 tmp_list = tmp_list->prev->prev;
5197                 continue;*/
5198
5199                 cur_column = left_column;
5200                 if (tmp_list)
5201                   tmp_list = tmp_list->prev;
5202                 continue;
5203               }
5204
5205             if (!tree_view->priv->column_drop_func)
5206               return left_column;
5207
5208             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5209               return left_column;
5210
5211             cur_column = left_column;
5212             tmp_list = tmp_list->prev;
5213           }
5214
5215         if (!tree_view->priv->column_drop_func)
5216           return NULL;
5217
5218         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5219           return NULL;
5220         else
5221           return (GtkTreeViewColumn *)0x1;
5222         break;
5223
5224       case DROP_END:
5225         /* same as DROP_HOME case, but doing it backwards */
5226         tmp_list = g_list_last (tree_view->priv->columns);
5227         cur_column = NULL;
5228
5229         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5230           return (GtkTreeViewColumn *)0x1;
5231
5232         while (tmp_list)
5233           {
5234             g_assert (tmp_list);
5235
5236             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5237
5238             if (left_column && !left_column->visible)
5239               {
5240                 cur_column = left_column;
5241                 tmp_list = tmp_list->prev;
5242               }
5243
5244             if (!tree_view->priv->column_drop_func)
5245               return left_column;
5246
5247             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5248               return left_column;
5249
5250             cur_column = left_column;
5251             tmp_list = tmp_list->prev;
5252           }
5253
5254         if (!tree_view->priv->column_drop_func)
5255           return NULL;
5256
5257         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5258           return NULL;
5259         else
5260           return (GtkTreeViewColumn *)0x1;
5261         break;
5262     }
5263
5264   return (GtkTreeViewColumn *)0x1;
5265 }
5266
5267 static gboolean
5268 gtk_tree_view_key_press (GtkWidget   *widget,
5269                          GdkEventKey *event)
5270 {
5271   GtkTreeView *tree_view = (GtkTreeView *) widget;
5272
5273   if (tree_view->priv->rubber_band_status)
5274     {
5275       if (event->keyval == GDK_KEY_Escape)
5276         gtk_tree_view_stop_rubber_band (tree_view);
5277
5278       return TRUE;
5279     }
5280
5281   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5282     {
5283       if (event->keyval == GDK_KEY_Escape)
5284         {
5285           tree_view->priv->cur_reorder = NULL;
5286           gtk_tree_view_button_release_drag_column (widget, NULL);
5287         }
5288       return TRUE;
5289     }
5290
5291   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5292     {
5293       GList *focus_column;
5294       gboolean rtl;
5295
5296       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5297
5298       for (focus_column = tree_view->priv->columns;
5299            focus_column;
5300            focus_column = focus_column->next)
5301         {
5302           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5303
5304           if (gtk_widget_has_focus (column->button))
5305             break;
5306         }
5307
5308       if (focus_column &&
5309           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5310           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5311            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5312         {
5313           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5314
5315           if (!column->resizable)
5316             {
5317               gtk_widget_error_bell (widget);
5318               return TRUE;
5319             }
5320
5321           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5322               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5323             {
5324               GtkRequisition button_req;
5325               gint old_width = column->resized_width;
5326
5327               gtk_widget_get_preferred_size (column->button, &button_req, NULL);
5328
5329               column->resized_width = MAX (column->resized_width,
5330                                            column->width);
5331               column->resized_width -= 2;
5332               if (column->resized_width < 0)
5333                 column->resized_width = 0;
5334
5335               if (column->min_width == -1)
5336                 column->resized_width = MAX (button_req.width,
5337                                              column->resized_width);
5338               else
5339                 {
5340                   column->resized_width = MAX (column->min_width,
5341                                                column->resized_width);
5342                 }
5343
5344               if (column->max_width != -1)
5345                 column->resized_width = MIN (column->resized_width,
5346                                              column->max_width);
5347
5348               column->use_resized_width = TRUE;
5349
5350               if (column->resized_width != old_width)
5351                 gtk_widget_queue_resize (widget);
5352               else
5353                 gtk_widget_error_bell (widget);
5354             }
5355           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5356                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5357             {
5358               gint old_width = column->resized_width;
5359
5360               column->resized_width = MAX (column->resized_width,
5361                                            column->width);
5362               column->resized_width += 2;
5363
5364               if (column->max_width != -1)
5365                 column->resized_width = MIN (column->resized_width,
5366                                              column->max_width);
5367
5368               column->use_resized_width = TRUE;
5369
5370               if (column->resized_width != old_width)
5371                 gtk_widget_queue_resize (widget);
5372               else
5373                 gtk_widget_error_bell (widget);
5374             }
5375
5376           return TRUE;
5377         }
5378
5379       if (focus_column &&
5380           (event->state & GDK_MOD1_MASK) &&
5381           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5382            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5383            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5384            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5385         {
5386           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5387
5388           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5389               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5390             {
5391               GtkTreeViewColumn *col;
5392               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5393               if (col != (GtkTreeViewColumn *)0x1)
5394                 gtk_tree_view_move_column_after (tree_view, column, col);
5395               else
5396                 gtk_widget_error_bell (widget);
5397             }
5398           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5399                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5400             {
5401               GtkTreeViewColumn *col;
5402               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5403               if (col != (GtkTreeViewColumn *)0x1)
5404                 gtk_tree_view_move_column_after (tree_view, column, col);
5405               else
5406                 gtk_widget_error_bell (widget);
5407             }
5408           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5409             {
5410               GtkTreeViewColumn *col;
5411               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5412               if (col != (GtkTreeViewColumn *)0x1)
5413                 gtk_tree_view_move_column_after (tree_view, column, col);
5414               else
5415                 gtk_widget_error_bell (widget);
5416             }
5417           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5418             {
5419               GtkTreeViewColumn *col;
5420               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5421               if (col != (GtkTreeViewColumn *)0x1)
5422                 gtk_tree_view_move_column_after (tree_view, column, col);
5423               else
5424                 gtk_widget_error_bell (widget);
5425             }
5426
5427           return TRUE;
5428         }
5429     }
5430
5431   /* Chain up to the parent class.  It handles the keybindings. */
5432   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5433     return TRUE;
5434
5435   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5436     {
5437       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5438       return FALSE;
5439     }
5440
5441   /* We pass the event to the search_entry.  If its text changes, then we start
5442    * the typeahead find capabilities. */
5443   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5444       && tree_view->priv->enable_search
5445       && !tree_view->priv->search_custom_entry_set)
5446     {
5447       GdkEvent *new_event;
5448       char *old_text;
5449       const char *new_text;
5450       gboolean retval;
5451       GdkScreen *screen;
5452       gboolean text_modified;
5453       gulong popup_menu_id;
5454
5455       gtk_tree_view_ensure_interactive_directory (tree_view);
5456
5457       /* Make a copy of the current text */
5458       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5459       new_event = gdk_event_copy ((GdkEvent *) event);
5460       g_object_unref (((GdkEventKey *) new_event)->window);
5461       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5462       gtk_widget_realize (tree_view->priv->search_window);
5463
5464       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5465                                         "popup-menu", G_CALLBACK (gtk_true),
5466                                         NULL);
5467
5468       /* Move the entry off screen */
5469       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5470       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5471                        gdk_screen_get_width (screen) + 1,
5472                        gdk_screen_get_height (screen) + 1);
5473       gtk_widget_show (tree_view->priv->search_window);
5474
5475       /* Send the event to the window.  If the preedit_changed signal is emitted
5476        * during this event, we will set priv->imcontext_changed  */
5477       tree_view->priv->imcontext_changed = FALSE;
5478       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5479       gdk_event_free (new_event);
5480       gtk_widget_hide (tree_view->priv->search_window);
5481
5482       g_signal_handler_disconnect (tree_view->priv->search_entry,
5483                                    popup_menu_id);
5484
5485       /* We check to make sure that the entry tried to handle the text, and that
5486        * the text has changed.
5487        */
5488       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5489       text_modified = strcmp (old_text, new_text) != 0;
5490       g_free (old_text);
5491       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5492           (retval && text_modified))               /* ...or the text was modified */
5493         {
5494           if (gtk_tree_view_real_start_interactive_search (tree_view,
5495                                                            gdk_event_get_device ((GdkEvent *) event),
5496                                                            FALSE))
5497             {
5498               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5499               return TRUE;
5500             }
5501           else
5502             {
5503               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5504               return FALSE;
5505             }
5506         }
5507     }
5508
5509   return FALSE;
5510 }
5511
5512 static gboolean
5513 gtk_tree_view_key_release (GtkWidget   *widget,
5514                            GdkEventKey *event)
5515 {
5516   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5517
5518   if (tree_view->priv->rubber_band_status)
5519     return TRUE;
5520
5521   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5522 }
5523
5524 /* FIXME Is this function necessary? Can I get an enter_notify event
5525  * w/o either an expose event or a mouse motion event?
5526  */
5527 static gboolean
5528 gtk_tree_view_enter_notify (GtkWidget        *widget,
5529                             GdkEventCrossing *event)
5530 {
5531   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5532   GtkRBTree *tree;
5533   GtkRBNode *node;
5534   gint new_y;
5535
5536   /* Sanity check it */
5537   if (event->window != tree_view->priv->bin_window)
5538     return FALSE;
5539
5540   if (tree_view->priv->tree == NULL)
5541     return FALSE;
5542
5543   if (event->mode == GDK_CROSSING_GRAB ||
5544       event->mode == GDK_CROSSING_GTK_GRAB ||
5545       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5546       event->mode == GDK_CROSSING_STATE_CHANGED)
5547     return TRUE;
5548
5549   /* find the node internally */
5550   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5551   if (new_y < 0)
5552     new_y = 0;
5553   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5554
5555   tree_view->priv->event_last_x = event->x;
5556   tree_view->priv->event_last_y = event->y;
5557
5558   if ((tree_view->priv->button_pressed_node == NULL) ||
5559       (tree_view->priv->button_pressed_node == node))
5560     prelight_or_select (tree_view, tree, node, event->x, event->y);
5561
5562   return TRUE;
5563 }
5564
5565 static gboolean
5566 gtk_tree_view_leave_notify (GtkWidget        *widget,
5567                             GdkEventCrossing *event)
5568 {
5569   GtkTreeView *tree_view;
5570
5571   if (event->mode == GDK_CROSSING_GRAB)
5572     return TRUE;
5573
5574   tree_view = GTK_TREE_VIEW (widget);
5575
5576   if (tree_view->priv->prelight_node)
5577     _gtk_tree_view_queue_draw_node (tree_view,
5578                                    tree_view->priv->prelight_tree,
5579                                    tree_view->priv->prelight_node,
5580                                    NULL);
5581
5582   tree_view->priv->event_last_x = -10000;
5583   tree_view->priv->event_last_y = -10000;
5584
5585   prelight_or_select (tree_view,
5586                       NULL, NULL,
5587                       -1000, -1000); /* coords not possibly over an arrow */
5588
5589   return TRUE;
5590 }
5591
5592
5593 static gint
5594 gtk_tree_view_focus_out (GtkWidget     *widget,
5595                          GdkEventFocus *event)
5596 {
5597   GtkTreeView *tree_view;
5598
5599   tree_view = GTK_TREE_VIEW (widget);
5600
5601   gtk_widget_queue_draw (widget);
5602
5603   /* destroy interactive search dialog */
5604   if (tree_view->priv->search_window)
5605     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5606                                       gdk_event_get_device ((GdkEvent *) event));
5607
5608   return FALSE;
5609 }
5610
5611
5612 /* Incremental Reflow
5613  */
5614
5615 static void
5616 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5617                                  GtkRBTree   *tree,
5618                                  GtkRBNode   *node)
5619 {
5620   GtkAllocation allocation;
5621   gint y;
5622
5623   y = _gtk_rbtree_node_find_offset (tree, node)
5624     - tree_view->priv->vadjustment->value
5625     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5626
5627   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5628   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5629                               0, y,
5630                               allocation.width,
5631                               GTK_RBNODE_GET_HEIGHT (node));
5632 }
5633
5634 static gboolean
5635 node_is_visible (GtkTreeView *tree_view,
5636                  GtkRBTree   *tree,
5637                  GtkRBNode   *node)
5638 {
5639   int y;
5640   int height;
5641
5642   y = _gtk_rbtree_node_find_offset (tree, node);
5643   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5644
5645   if (y >= tree_view->priv->vadjustment->value &&
5646       y + height <= (tree_view->priv->vadjustment->value
5647                      + tree_view->priv->vadjustment->page_size))
5648     return TRUE;
5649
5650   return FALSE;
5651 }
5652
5653 /* Returns TRUE if it updated the size
5654  */
5655 static gboolean
5656 validate_row (GtkTreeView *tree_view,
5657               GtkRBTree   *tree,
5658               GtkRBNode   *node,
5659               GtkTreeIter *iter,
5660               GtkTreePath *path)
5661 {
5662   GtkTreeViewColumn *column;
5663   GList *list, *first_column, *last_column;
5664   gint height = 0;
5665   gint horizontal_separator;
5666   gint vertical_separator;
5667   gint focus_line_width;
5668   gint depth = gtk_tree_path_get_depth (path);
5669   gboolean retval = FALSE;
5670   gboolean is_separator = FALSE;
5671   gboolean draw_vgrid_lines, draw_hgrid_lines;
5672   gint focus_pad;
5673   gint grid_line_width;
5674   gboolean wide_separators;
5675   gint separator_height;
5676
5677   /* double check the row needs validating */
5678   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5679       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5680     return FALSE;
5681
5682   is_separator = row_is_separator (tree_view, iter, NULL);
5683
5684   gtk_widget_style_get (GTK_WIDGET (tree_view),
5685                         "focus-padding", &focus_pad,
5686                         "focus-line-width", &focus_line_width,
5687                         "horizontal-separator", &horizontal_separator,
5688                         "vertical-separator", &vertical_separator,
5689                         "grid-line-width", &grid_line_width,
5690                         "wide-separators",  &wide_separators,
5691                         "separator-height", &separator_height,
5692                         NULL);
5693
5694   draw_vgrid_lines =
5695     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5696     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5697   draw_hgrid_lines =
5698     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5699     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5700
5701   for (last_column = g_list_last (tree_view->priv->columns);
5702        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5703        last_column = last_column->prev)
5704     ;
5705
5706   for (first_column = g_list_first (tree_view->priv->columns);
5707        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5708        first_column = first_column->next)
5709     ;
5710
5711   for (list = tree_view->priv->columns; list; list = list->next)
5712     {
5713       gint tmp_width;
5714       gint tmp_height;
5715
5716       column = list->data;
5717
5718       if (! column->visible)
5719         continue;
5720
5721       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5722         continue;
5723
5724       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5725                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5726                                                node->children?TRUE:FALSE);
5727       gtk_tree_view_column_cell_get_size (column,
5728                                           NULL, NULL, NULL,
5729                                           &tmp_width, &tmp_height);
5730
5731       if (!is_separator)
5732         {
5733           tmp_height += vertical_separator;
5734           height = MAX (height, tmp_height);
5735           height = MAX (height, tree_view->priv->expander_size);
5736         }
5737       else
5738         {
5739           if (wide_separators)
5740             height = separator_height + 2 * focus_pad;
5741           else
5742             height = 2 + 2 * focus_pad;
5743         }
5744
5745       if (gtk_tree_view_is_expander_column (tree_view, column))
5746         {
5747           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5748
5749           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5750             tmp_width += depth * tree_view->priv->expander_size;
5751         }
5752       else
5753         tmp_width = tmp_width + horizontal_separator;
5754
5755       if (draw_vgrid_lines)
5756         {
5757           if (list->data == first_column || list->data == last_column)
5758             tmp_width += grid_line_width / 2.0;
5759           else
5760             tmp_width += grid_line_width;
5761         }
5762
5763       if (tmp_width > column->requested_width)
5764         {
5765           retval = TRUE;
5766           column->requested_width = tmp_width;
5767         }
5768     }
5769
5770   if (draw_hgrid_lines)
5771     height += grid_line_width;
5772
5773   if (height != GTK_RBNODE_GET_HEIGHT (node))
5774     {
5775       retval = TRUE;
5776       _gtk_rbtree_node_set_height (tree, node, height);
5777     }
5778   _gtk_rbtree_node_mark_valid (tree, node);
5779   tree_view->priv->post_validation_flag = TRUE;
5780
5781   return retval;
5782 }
5783
5784
5785 static void
5786 validate_visible_area (GtkTreeView *tree_view)
5787 {
5788   GtkAllocation allocation;
5789   GtkTreePath *path = NULL;
5790   GtkTreePath *above_path = NULL;
5791   GtkTreeIter iter;
5792   GtkRBTree *tree = NULL;
5793   GtkRBNode *node = NULL;
5794   gboolean need_redraw = FALSE;
5795   gboolean size_changed = FALSE;
5796   gint total_height;
5797   gint area_above = 0;
5798   gint area_below = 0;
5799
5800   if (tree_view->priv->tree == NULL)
5801     return;
5802
5803   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5804       tree_view->priv->scroll_to_path == NULL)
5805     return;
5806
5807   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5808   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5809
5810   if (total_height == 0)
5811     return;
5812
5813   /* First, we check to see if we need to scroll anywhere
5814    */
5815   if (tree_view->priv->scroll_to_path)
5816     {
5817       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5818       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5819         {
5820           /* we are going to scroll, and will update dy */
5821           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5822           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5823               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5824             {
5825               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5826               if (validate_row (tree_view, tree, node, &iter, path))
5827                 size_changed = TRUE;
5828             }
5829
5830           if (tree_view->priv->scroll_to_use_align)
5831             {
5832               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5833               area_above = (total_height - height) *
5834                 tree_view->priv->scroll_to_row_align;
5835               area_below = total_height - area_above - height;
5836               area_above = MAX (area_above, 0);
5837               area_below = MAX (area_below, 0);
5838             }
5839           else
5840             {
5841               /* two cases:
5842                * 1) row not visible
5843                * 2) row visible
5844                */
5845               gint dy;
5846               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5847
5848               dy = _gtk_rbtree_node_find_offset (tree, node);
5849
5850               if (dy >= tree_view->priv->vadjustment->value &&
5851                   dy + height <= (tree_view->priv->vadjustment->value
5852                                   + tree_view->priv->vadjustment->page_size))
5853                 {
5854                   /* row visible: keep the row at the same position */
5855                   area_above = dy - tree_view->priv->vadjustment->value;
5856                   area_below = (tree_view->priv->vadjustment->value +
5857                                 tree_view->priv->vadjustment->page_size)
5858                                - dy - height;
5859                 }
5860               else
5861                 {
5862                   /* row not visible */
5863                   if (dy >= 0
5864                       && dy + height <= tree_view->priv->vadjustment->page_size)
5865                     {
5866                       /* row at the beginning -- fixed */
5867                       area_above = dy;
5868                       area_below = tree_view->priv->vadjustment->page_size
5869                                    - area_above - height;
5870                     }
5871                   else if (dy >= (tree_view->priv->vadjustment->upper -
5872                                   tree_view->priv->vadjustment->page_size))
5873                     {
5874                       /* row at the end -- fixed */
5875                       area_above = dy - (tree_view->priv->vadjustment->upper -
5876                                    tree_view->priv->vadjustment->page_size);
5877                       area_below = tree_view->priv->vadjustment->page_size -
5878                                    area_above - height;
5879
5880                       if (area_below < 0)
5881                         {
5882                           area_above = tree_view->priv->vadjustment->page_size - height;
5883                           area_below = 0;
5884                         }
5885                     }
5886                   else
5887                     {
5888                       /* row somewhere in the middle, bring it to the top
5889                        * of the view
5890                        */
5891                       area_above = 0;
5892                       area_below = total_height - height;
5893                     }
5894                 }
5895             }
5896         }
5897       else
5898         /* the scroll to isn't valid; ignore it.
5899          */
5900         {
5901           if (tree_view->priv->scroll_to_path && !path)
5902             {
5903               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5904               tree_view->priv->scroll_to_path = NULL;
5905             }
5906           if (path)
5907             gtk_tree_path_free (path);
5908           path = NULL;
5909         }
5910     }
5911
5912   /* We didn't have a scroll_to set, so we just handle things normally
5913    */
5914   if (path == NULL)
5915     {
5916       gint offset;
5917
5918       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5919                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5920                                         &tree, &node);
5921       if (node == NULL)
5922         {
5923           /* In this case, nothing has been validated */
5924           path = gtk_tree_path_new_first ();
5925           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5926         }
5927       else
5928         {
5929           path = _gtk_tree_view_find_path (tree_view, tree, node);
5930           total_height += offset;
5931         }
5932
5933       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5934
5935       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5936           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5937         {
5938           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5939           if (validate_row (tree_view, tree, node, &iter, path))
5940             size_changed = TRUE;
5941         }
5942       area_above = 0;
5943       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5944     }
5945
5946   above_path = gtk_tree_path_copy (path);
5947
5948   /* if we do not validate any row above the new top_row, we will make sure
5949    * that the row immediately above top_row has been validated. (if we do not
5950    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5951    * when invalidated that row's height will be zero. and this will mess up
5952    * scrolling).
5953    */
5954   if (area_above == 0)
5955     {
5956       GtkRBTree *tmptree;
5957       GtkRBNode *tmpnode;
5958
5959       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5960       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5961
5962       if (tmpnode)
5963         {
5964           GtkTreePath *tmppath;
5965           GtkTreeIter tmpiter;
5966
5967           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5968           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5969
5970           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5971               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5972             {
5973               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5974               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5975                 size_changed = TRUE;
5976             }
5977
5978           gtk_tree_path_free (tmppath);
5979         }
5980     }
5981
5982   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5983    * backwards is much slower then forward, as there is no iter_prev function.
5984    * We go forwards first in case we run out of tree.  Then we go backwards to
5985    * fill out the top.
5986    */
5987   while (node && area_below > 0)
5988     {
5989       if (node->children)
5990         {
5991           GtkTreeIter parent = iter;
5992           gboolean has_child;
5993
5994           tree = node->children;
5995           node = tree->root;
5996
5997           g_assert (node != tree->nil);
5998
5999           while (node->left != tree->nil)
6000             node = node->left;
6001           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6002                                                     &iter,
6003                                                     &parent);
6004           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6005           gtk_tree_path_down (path);
6006         }
6007       else
6008         {
6009           gboolean done = FALSE;
6010           do
6011             {
6012               node = _gtk_rbtree_next (tree, node);
6013               if (node != NULL)
6014                 {
6015                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6016                   done = TRUE;
6017                   gtk_tree_path_next (path);
6018
6019                   /* Sanity Check! */
6020                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6021                 }
6022               else
6023                 {
6024                   GtkTreeIter parent_iter = iter;
6025                   gboolean has_parent;
6026
6027                   node = tree->parent_node;
6028                   tree = tree->parent_tree;
6029                   if (tree == NULL)
6030                     break;
6031                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6032                                                            &iter,
6033                                                            &parent_iter);
6034                   gtk_tree_path_up (path);
6035
6036                   /* Sanity check */
6037                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6038                 }
6039             }
6040           while (!done);
6041         }
6042
6043       if (!node)
6044         break;
6045
6046       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6047           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6048         {
6049           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6050           if (validate_row (tree_view, tree, node, &iter, path))
6051               size_changed = TRUE;
6052         }
6053
6054       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6055     }
6056   gtk_tree_path_free (path);
6057
6058   /* If we ran out of tree, and have extra area_below left, we need to add it
6059    * to area_above */
6060   if (area_below > 0)
6061     area_above += area_below;
6062
6063   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6064
6065   /* We walk backwards */
6066   while (area_above > 0)
6067     {
6068       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6069
6070       /* Always find the new path in the tree.  We cannot just assume
6071        * a gtk_tree_path_prev() is enough here, as there might be children
6072        * in between this node and the previous sibling node.  If this
6073        * appears to be a performance hotspot in profiles, we can look into
6074        * intrigate logic for keeping path, node and iter in sync like
6075        * we do for forward walks.  (Which will be hard because of the lacking
6076        * iter_prev).
6077        */
6078
6079       if (node == NULL)
6080         break;
6081
6082       gtk_tree_path_free (above_path);
6083       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6084
6085       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6086
6087       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6088           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6089         {
6090           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6091           if (validate_row (tree_view, tree, node, &iter, above_path))
6092             size_changed = TRUE;
6093         }
6094       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6095     }
6096
6097   /* if we scrolled to a path, we need to set the dy here,
6098    * and sync the top row accordingly
6099    */
6100   if (tree_view->priv->scroll_to_path)
6101     {
6102       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6103       gtk_tree_view_top_row_to_dy (tree_view);
6104
6105       need_redraw = TRUE;
6106     }
6107   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6108     {
6109       /* when we are not scrolling, we should never set dy to something
6110        * else than zero. we update top_row to be in sync with dy = 0.
6111        */
6112       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6113       gtk_tree_view_dy_to_top_row (tree_view);
6114     }
6115   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6116     {
6117       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6118       gtk_tree_view_dy_to_top_row (tree_view);
6119     }
6120   else
6121     gtk_tree_view_top_row_to_dy (tree_view);
6122
6123   /* update width/height and queue a resize */
6124   if (size_changed)
6125     {
6126       GtkRequisition requisition;
6127
6128       /* We temporarily guess a size, under the assumption that it will be the
6129        * same when we get our next size_allocate.  If we don't do this, we'll be
6130        * in an inconsistent state if we call top_row_to_dy. */
6131
6132       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6133                                      &requisition, NULL);
6134       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6135       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6136       gtk_adjustment_changed (tree_view->priv->hadjustment);
6137       gtk_adjustment_changed (tree_view->priv->vadjustment);
6138       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6139     }
6140
6141   if (tree_view->priv->scroll_to_path)
6142     {
6143       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6144       tree_view->priv->scroll_to_path = NULL;
6145     }
6146
6147   if (above_path)
6148     gtk_tree_path_free (above_path);
6149
6150   if (tree_view->priv->scroll_to_column)
6151     {
6152       tree_view->priv->scroll_to_column = NULL;
6153     }
6154   if (need_redraw)
6155     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6156 }
6157
6158 static void
6159 initialize_fixed_height_mode (GtkTreeView *tree_view)
6160 {
6161   if (!tree_view->priv->tree)
6162     return;
6163
6164   if (tree_view->priv->fixed_height < 0)
6165     {
6166       GtkTreeIter iter;
6167       GtkTreePath *path;
6168
6169       GtkRBTree *tree = NULL;
6170       GtkRBNode *node = NULL;
6171
6172       tree = tree_view->priv->tree;
6173       node = tree->root;
6174
6175       path = _gtk_tree_view_find_path (tree_view, tree, node);
6176       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6177
6178       validate_row (tree_view, tree, node, &iter, path);
6179
6180       gtk_tree_path_free (path);
6181
6182       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6183     }
6184
6185    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6186                                  tree_view->priv->fixed_height, TRUE);
6187 }
6188
6189 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6190  * the left-most uninvalidated node.  We then try walking right, validating
6191  * nodes.  Once we find a valid node, we repeat the previous process of finding
6192  * the first invalid node.
6193  */
6194
6195 static gboolean
6196 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6197 {
6198   GtkRBTree *tree = NULL;
6199   GtkRBNode *node = NULL;
6200   gboolean validated_area = FALSE;
6201   gint retval = TRUE;
6202   GtkTreePath *path = NULL;
6203   GtkTreeIter iter;
6204   GTimer *timer;
6205   gint i = 0;
6206
6207   gint prev_height = -1;
6208   gboolean fixed_height = TRUE;
6209
6210   g_assert (tree_view);
6211
6212   if (tree_view->priv->tree == NULL)
6213       return FALSE;
6214
6215   if (tree_view->priv->fixed_height_mode)
6216     {
6217       if (tree_view->priv->fixed_height < 0)
6218         initialize_fixed_height_mode (tree_view);
6219
6220       return FALSE;
6221     }
6222
6223   timer = g_timer_new ();
6224   g_timer_start (timer);
6225
6226   do
6227     {
6228       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6229         {
6230           retval = FALSE;
6231           goto done;
6232         }
6233
6234       if (path != NULL)
6235         {
6236           node = _gtk_rbtree_next (tree, node);
6237           if (node != NULL)
6238             {
6239               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6240               gtk_tree_path_next (path);
6241             }
6242           else
6243             {
6244               gtk_tree_path_free (path);
6245               path = NULL;
6246             }
6247         }
6248
6249       if (path == NULL)
6250         {
6251           tree = tree_view->priv->tree;
6252           node = tree_view->priv->tree->root;
6253
6254           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6255
6256           do
6257             {
6258               if (node->left != tree->nil &&
6259                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6260                 {
6261                   node = node->left;
6262                 }
6263               else if (node->right != tree->nil &&
6264                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6265                 {
6266                   node = node->right;
6267                 }
6268               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6269                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6270                 {
6271                   break;
6272                 }
6273               else if (node->children != NULL)
6274                 {
6275                   tree = node->children;
6276                   node = tree->root;
6277                 }
6278               else
6279                 /* RBTree corruption!  All bad */
6280                 g_assert_not_reached ();
6281             }
6282           while (TRUE);
6283           path = _gtk_tree_view_find_path (tree_view, tree, node);
6284           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6285         }
6286
6287       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6288                        validated_area;
6289
6290       if (!tree_view->priv->fixed_height_check)
6291         {
6292           gint height;
6293
6294           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6295           if (prev_height < 0)
6296             prev_height = height;
6297           else if (prev_height != height)
6298             fixed_height = FALSE;
6299         }
6300
6301       i++;
6302     }
6303   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6304
6305   if (!tree_view->priv->fixed_height_check)
6306    {
6307      if (fixed_height)
6308        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6309
6310      tree_view->priv->fixed_height_check = 1;
6311    }
6312
6313  done:
6314   if (validated_area)
6315     {
6316       GtkRequisition requisition;
6317       /* We temporarily guess a size, under the assumption that it will be the
6318        * same when we get our next size_allocate.  If we don't do this, we'll be
6319        * in an inconsistent state when we call top_row_to_dy. */
6320
6321       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6322                                      &requisition, NULL);
6323       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6324       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6325       gtk_adjustment_changed (tree_view->priv->hadjustment);
6326       gtk_adjustment_changed (tree_view->priv->vadjustment);
6327
6328       if (queue_resize)
6329         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6330     }
6331
6332   if (path) gtk_tree_path_free (path);
6333   g_timer_destroy (timer);
6334
6335   return retval;
6336 }
6337
6338 static gboolean
6339 validate_rows (GtkTreeView *tree_view)
6340 {
6341   gboolean retval;
6342
6343   retval = do_validate_rows (tree_view, TRUE);
6344
6345   if (! retval && tree_view->priv->validate_rows_timer)
6346     {
6347       g_source_remove (tree_view->priv->validate_rows_timer);
6348       tree_view->priv->validate_rows_timer = 0;
6349     }
6350
6351   return retval;
6352 }
6353
6354 static gboolean
6355 validate_rows_handler (GtkTreeView *tree_view)
6356 {
6357   gboolean retval;
6358
6359   retval = do_validate_rows (tree_view, TRUE);
6360   if (! retval && tree_view->priv->validate_rows_timer)
6361     {
6362       g_source_remove (tree_view->priv->validate_rows_timer);
6363       tree_view->priv->validate_rows_timer = 0;
6364     }
6365
6366   return retval;
6367 }
6368
6369 static gboolean
6370 do_presize_handler (GtkTreeView *tree_view)
6371 {
6372   if (tree_view->priv->mark_rows_col_dirty)
6373     {
6374       if (tree_view->priv->tree)
6375         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6376       tree_view->priv->mark_rows_col_dirty = FALSE;
6377     }
6378   validate_visible_area (tree_view);
6379   tree_view->priv->presize_handler_timer = 0;
6380
6381   if (tree_view->priv->fixed_height_mode)
6382     {
6383       GtkRequisition requisition;
6384
6385       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6386                                      &requisition, NULL);
6387
6388       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6389       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6390       gtk_adjustment_changed (tree_view->priv->hadjustment);
6391       gtk_adjustment_changed (tree_view->priv->vadjustment);
6392       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6393     }
6394
6395   return FALSE;
6396 }
6397
6398 static gboolean
6399 presize_handler_callback (gpointer data)
6400 {
6401   do_presize_handler (GTK_TREE_VIEW (data));
6402
6403   return FALSE;
6404 }
6405
6406 static void
6407 install_presize_handler (GtkTreeView *tree_view)
6408 {
6409   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6410     return;
6411
6412   if (! tree_view->priv->presize_handler_timer)
6413     {
6414       tree_view->priv->presize_handler_timer =
6415         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6416     }
6417   if (! tree_view->priv->validate_rows_timer)
6418     {
6419       tree_view->priv->validate_rows_timer =
6420         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6421     }
6422 }
6423
6424 static void
6425 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6426 {
6427   /* Prior to drawing, we make sure the visible area is validated. */
6428   if (tree_view->priv->presize_handler_timer)
6429     {
6430       g_source_remove (tree_view->priv->presize_handler_timer);
6431       tree_view->priv->presize_handler_timer = 0;
6432
6433       do_presize_handler (tree_view);
6434     }
6435
6436   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6437 }
6438
6439 static gboolean
6440 scroll_sync_handler (GtkTreeView *tree_view)
6441 {
6442   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6443     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6444   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6445     gtk_tree_view_top_row_to_dy (tree_view);
6446   else
6447     gtk_tree_view_dy_to_top_row (tree_view);
6448
6449   tree_view->priv->scroll_sync_timer = 0;
6450
6451   return FALSE;
6452 }
6453
6454 static void
6455 install_scroll_sync_handler (GtkTreeView *tree_view)
6456 {
6457   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6458     return;
6459
6460   if (!tree_view->priv->scroll_sync_timer)
6461     {
6462       tree_view->priv->scroll_sync_timer =
6463         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6464     }
6465 }
6466
6467 static void
6468 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6469                            GtkTreePath *path,
6470                            gint         offset)
6471 {
6472   gtk_tree_row_reference_free (tree_view->priv->top_row);
6473
6474   if (!path)
6475     {
6476       tree_view->priv->top_row = NULL;
6477       tree_view->priv->top_row_dy = 0;
6478     }
6479   else
6480     {
6481       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6482       tree_view->priv->top_row_dy = offset;
6483     }
6484 }
6485
6486 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6487  * it's set to be NULL, and top_row_dy is 0;
6488  */
6489 static void
6490 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6491 {
6492   gint offset;
6493   GtkTreePath *path;
6494   GtkRBTree *tree;
6495   GtkRBNode *node;
6496
6497   if (tree_view->priv->tree == NULL)
6498     {
6499       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6500     }
6501   else
6502     {
6503       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6504                                         tree_view->priv->dy,
6505                                         &tree, &node);
6506
6507       if (tree == NULL)
6508         {
6509           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6510         }
6511       else
6512         {
6513           path = _gtk_tree_view_find_path (tree_view, tree, node);
6514           gtk_tree_view_set_top_row (tree_view, path, offset);
6515           gtk_tree_path_free (path);
6516         }
6517     }
6518 }
6519
6520 static void
6521 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6522 {
6523   GtkTreePath *path;
6524   GtkRBTree *tree;
6525   GtkRBNode *node;
6526   int new_dy;
6527
6528   /* Avoid recursive calls */
6529   if (tree_view->priv->in_top_row_to_dy)
6530     return;
6531
6532   if (tree_view->priv->top_row)
6533     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6534   else
6535     path = NULL;
6536
6537   if (!path)
6538     tree = NULL;
6539   else
6540     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6541
6542   if (path)
6543     gtk_tree_path_free (path);
6544
6545   if (tree == NULL)
6546     {
6547       /* keep dy and set new toprow */
6548       gtk_tree_row_reference_free (tree_view->priv->top_row);
6549       tree_view->priv->top_row = NULL;
6550       tree_view->priv->top_row_dy = 0;
6551       /* DO NOT install the idle handler */
6552       gtk_tree_view_dy_to_top_row (tree_view);
6553       return;
6554     }
6555
6556   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6557       < tree_view->priv->top_row_dy)
6558     {
6559       /* new top row -- do NOT install the idle handler */
6560       gtk_tree_view_dy_to_top_row (tree_view);
6561       return;
6562     }
6563
6564   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6565   new_dy += tree_view->priv->top_row_dy;
6566
6567   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6568     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6569
6570   new_dy = MAX (0, new_dy);
6571
6572   tree_view->priv->in_top_row_to_dy = TRUE;
6573   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6574   tree_view->priv->in_top_row_to_dy = FALSE;
6575 }
6576
6577
6578 void
6579 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6580 {
6581   tree_view->priv->mark_rows_col_dirty = TRUE;
6582
6583   install_presize_handler (tree_view);
6584 }
6585
6586 /*
6587  * This function works synchronously (due to the while (validate_rows...)
6588  * loop).
6589  *
6590  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6591  * here. You now need to check that yourself.
6592  */
6593 void
6594 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6595                                 GtkTreeViewColumn *column)
6596 {
6597   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6598   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6599
6600   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6601
6602   do_presize_handler (tree_view);
6603   while (validate_rows (tree_view));
6604
6605   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6606 }
6607
6608 /* Drag-and-drop */
6609
6610 static void
6611 set_source_row (GdkDragContext *context,
6612                 GtkTreeModel   *model,
6613                 GtkTreePath    *source_row)
6614 {
6615   g_object_set_data_full (G_OBJECT (context),
6616                           I_("gtk-tree-view-source-row"),
6617                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6618                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6619 }
6620
6621 static GtkTreePath*
6622 get_source_row (GdkDragContext *context)
6623 {
6624   GtkTreeRowReference *ref =
6625     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6626
6627   if (ref)
6628     return gtk_tree_row_reference_get_path (ref);
6629   else
6630     return NULL;
6631 }
6632
6633 typedef struct
6634 {
6635   GtkTreeRowReference *dest_row;
6636   guint                path_down_mode   : 1;
6637   guint                empty_view_drop  : 1;
6638   guint                drop_append_mode : 1;
6639 }
6640 DestRow;
6641
6642 static void
6643 dest_row_free (gpointer data)
6644 {
6645   DestRow *dr = (DestRow *)data;
6646
6647   gtk_tree_row_reference_free (dr->dest_row);
6648   g_slice_free (DestRow, dr);
6649 }
6650
6651 static void
6652 set_dest_row (GdkDragContext *context,
6653               GtkTreeModel   *model,
6654               GtkTreePath    *dest_row,
6655               gboolean        path_down_mode,
6656               gboolean        empty_view_drop,
6657               gboolean        drop_append_mode)
6658 {
6659   DestRow *dr;
6660
6661   if (!dest_row)
6662     {
6663       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6664                               NULL, NULL);
6665       return;
6666     }
6667
6668   dr = g_slice_new (DestRow);
6669
6670   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6671   dr->path_down_mode = path_down_mode != FALSE;
6672   dr->empty_view_drop = empty_view_drop != FALSE;
6673   dr->drop_append_mode = drop_append_mode != FALSE;
6674
6675   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6676                           dr, (GDestroyNotify) dest_row_free);
6677 }
6678
6679 static GtkTreePath*
6680 get_dest_row (GdkDragContext *context,
6681               gboolean       *path_down_mode)
6682 {
6683   DestRow *dr =
6684     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6685
6686   if (dr)
6687     {
6688       GtkTreePath *path = NULL;
6689
6690       if (path_down_mode)
6691         *path_down_mode = dr->path_down_mode;
6692
6693       if (dr->dest_row)
6694         path = gtk_tree_row_reference_get_path (dr->dest_row);
6695       else if (dr->empty_view_drop)
6696         path = gtk_tree_path_new_from_indices (0, -1);
6697       else
6698         path = NULL;
6699
6700       if (path && dr->drop_append_mode)
6701         gtk_tree_path_next (path);
6702
6703       return path;
6704     }
6705   else
6706     return NULL;
6707 }
6708
6709 /* Get/set whether drag_motion requested the drag data and
6710  * drag_data_received should thus not actually insert the data,
6711  * since the data doesn't result from a drop.
6712  */
6713 static void
6714 set_status_pending (GdkDragContext *context,
6715                     GdkDragAction   suggested_action)
6716 {
6717   g_object_set_data (G_OBJECT (context),
6718                      I_("gtk-tree-view-status-pending"),
6719                      GINT_TO_POINTER (suggested_action));
6720 }
6721
6722 static GdkDragAction
6723 get_status_pending (GdkDragContext *context)
6724 {
6725   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6726                                              "gtk-tree-view-status-pending"));
6727 }
6728
6729 static TreeViewDragInfo*
6730 get_info (GtkTreeView *tree_view)
6731 {
6732   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6733 }
6734
6735 static void
6736 destroy_info (TreeViewDragInfo *di)
6737 {
6738   g_slice_free (TreeViewDragInfo, di);
6739 }
6740
6741 static TreeViewDragInfo*
6742 ensure_info (GtkTreeView *tree_view)
6743 {
6744   TreeViewDragInfo *di;
6745
6746   di = get_info (tree_view);
6747
6748   if (di == NULL)
6749     {
6750       di = g_slice_new0 (TreeViewDragInfo);
6751
6752       g_object_set_data_full (G_OBJECT (tree_view),
6753                               I_("gtk-tree-view-drag-info"),
6754                               di,
6755                               (GDestroyNotify) destroy_info);
6756     }
6757
6758   return di;
6759 }
6760
6761 static void
6762 remove_info (GtkTreeView *tree_view)
6763 {
6764   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6765 }
6766
6767 #if 0
6768 static gint
6769 drag_scan_timeout (gpointer data)
6770 {
6771   GtkTreeView *tree_view;
6772   gint x, y;
6773   GdkModifierType state;
6774   GtkTreePath *path = NULL;
6775   GtkTreeViewColumn *column = NULL;
6776   GdkRectangle visible_rect;
6777
6778   GDK_THREADS_ENTER ();
6779
6780   tree_view = GTK_TREE_VIEW (data);
6781
6782   gdk_window_get_pointer (tree_view->priv->bin_window,
6783                           &x, &y, &state);
6784
6785   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6786
6787   /* See if we are near the edge. */
6788   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6789       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6790       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6791       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6792     {
6793       gtk_tree_view_get_path_at_pos (tree_view,
6794                                      tree_view->priv->bin_window,
6795                                      x, y,
6796                                      &path,
6797                                      &column,
6798                                      NULL,
6799                                      NULL);
6800
6801       if (path != NULL)
6802         {
6803           gtk_tree_view_scroll_to_cell (tree_view,
6804                                         path,
6805                                         column,
6806                                         TRUE,
6807                                         0.5, 0.5);
6808
6809           gtk_tree_path_free (path);
6810         }
6811     }
6812
6813   GDK_THREADS_LEAVE ();
6814
6815   return TRUE;
6816 }
6817 #endif /* 0 */
6818
6819 static void
6820 add_scroll_timeout (GtkTreeView *tree_view)
6821 {
6822   if (tree_view->priv->scroll_timeout == 0)
6823     {
6824       tree_view->priv->scroll_timeout =
6825         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6826     }
6827 }
6828
6829 static void
6830 remove_scroll_timeout (GtkTreeView *tree_view)
6831 {
6832   if (tree_view->priv->scroll_timeout != 0)
6833     {
6834       g_source_remove (tree_view->priv->scroll_timeout);
6835       tree_view->priv->scroll_timeout = 0;
6836     }
6837 }
6838
6839 static gboolean
6840 check_model_dnd (GtkTreeModel *model,
6841                  GType         required_iface,
6842                  const gchar  *signal)
6843 {
6844   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6845     {
6846       g_warning ("You must override the default '%s' handler "
6847                  "on GtkTreeView when using models that don't support "
6848                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6849                  "is to connect to '%s' and call "
6850                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6851                  "the default handler from running. Look at the source code "
6852                  "for the default handler in gtktreeview.c to get an idea what "
6853                  "your handler should do. (gtktreeview.c is in the GTK source "
6854                  "code.) If you're using GTK from a language other than C, "
6855                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6856                  signal, g_type_name (required_iface), signal);
6857       return FALSE;
6858     }
6859   else
6860     return TRUE;
6861 }
6862
6863 static void
6864 remove_open_timeout (GtkTreeView *tree_view)
6865 {
6866   if (tree_view->priv->open_dest_timeout != 0)
6867     {
6868       g_source_remove (tree_view->priv->open_dest_timeout);
6869       tree_view->priv->open_dest_timeout = 0;
6870     }
6871 }
6872
6873
6874 static gint
6875 open_row_timeout (gpointer data)
6876 {
6877   GtkTreeView *tree_view = data;
6878   GtkTreePath *dest_path = NULL;
6879   GtkTreeViewDropPosition pos;
6880   gboolean result = FALSE;
6881
6882   gtk_tree_view_get_drag_dest_row (tree_view,
6883                                    &dest_path,
6884                                    &pos);
6885
6886   if (dest_path &&
6887       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6888        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6889     {
6890       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6891       tree_view->priv->open_dest_timeout = 0;
6892
6893       gtk_tree_path_free (dest_path);
6894     }
6895   else
6896     {
6897       if (dest_path)
6898         gtk_tree_path_free (dest_path);
6899
6900       result = TRUE;
6901     }
6902
6903   return result;
6904 }
6905
6906 static gboolean
6907 scroll_row_timeout (gpointer data)
6908 {
6909   GtkTreeView *tree_view = data;
6910
6911   gtk_tree_view_vertical_autoscroll (tree_view);
6912
6913   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6914     gtk_tree_view_update_rubber_band (tree_view);
6915
6916   return TRUE;
6917 }
6918
6919 /* Returns TRUE if event should not be propagated to parent widgets */
6920 static gboolean
6921 set_destination_row (GtkTreeView    *tree_view,
6922                      GdkDragContext *context,
6923                      /* coordinates relative to the widget */
6924                      gint            x,
6925                      gint            y,
6926                      GdkDragAction  *suggested_action,
6927                      GdkAtom        *target)
6928 {
6929   GtkTreePath *path = NULL;
6930   GtkTreeViewDropPosition pos;
6931   GtkTreeViewDropPosition old_pos;
6932   TreeViewDragInfo *di;
6933   GtkWidget *widget;
6934   GtkTreePath *old_dest_path = NULL;
6935   gboolean can_drop = FALSE;
6936
6937   *suggested_action = 0;
6938   *target = GDK_NONE;
6939
6940   widget = GTK_WIDGET (tree_view);
6941
6942   di = get_info (tree_view);
6943
6944   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6945     {
6946       /* someone unset us as a drag dest, note that if
6947        * we return FALSE drag_leave isn't called
6948        */
6949
6950       gtk_tree_view_set_drag_dest_row (tree_view,
6951                                        NULL,
6952                                        GTK_TREE_VIEW_DROP_BEFORE);
6953
6954       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6955       remove_open_timeout (GTK_TREE_VIEW (widget));
6956
6957       return FALSE; /* no longer a drop site */
6958     }
6959
6960   *target = gtk_drag_dest_find_target (widget, context,
6961                                        gtk_drag_dest_get_target_list (widget));
6962   if (*target == GDK_NONE)
6963     {
6964       return FALSE;
6965     }
6966
6967   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6968                                           x, y,
6969                                           &path,
6970                                           &pos))
6971     {
6972       gint n_children;
6973       GtkTreeModel *model;
6974
6975       remove_open_timeout (tree_view);
6976
6977       /* the row got dropped on empty space, let's setup a special case
6978        */
6979
6980       if (path)
6981         gtk_tree_path_free (path);
6982
6983       model = gtk_tree_view_get_model (tree_view);
6984
6985       n_children = gtk_tree_model_iter_n_children (model, NULL);
6986       if (n_children)
6987         {
6988           pos = GTK_TREE_VIEW_DROP_AFTER;
6989           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6990         }
6991       else
6992         {
6993           pos = GTK_TREE_VIEW_DROP_BEFORE;
6994           path = gtk_tree_path_new_from_indices (0, -1);
6995         }
6996
6997       can_drop = TRUE;
6998
6999       goto out;
7000     }
7001
7002   g_assert (path);
7003
7004   /* If we left the current row's "open" zone, unset the timeout for
7005    * opening the row
7006    */
7007   gtk_tree_view_get_drag_dest_row (tree_view,
7008                                    &old_dest_path,
7009                                    &old_pos);
7010
7011   if (old_dest_path &&
7012       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7013        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7014          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7015     remove_open_timeout (tree_view);
7016
7017   if (old_dest_path)
7018     gtk_tree_path_free (old_dest_path);
7019
7020   if (TRUE /* FIXME if the location droppable predicate */)
7021     {
7022       can_drop = TRUE;
7023     }
7024
7025 out:
7026   if (can_drop)
7027     {
7028       GtkWidget *source_widget;
7029
7030       *suggested_action = context->suggested_action;
7031       source_widget = gtk_drag_get_source_widget (context);
7032
7033       if (source_widget == widget)
7034         {
7035           /* Default to MOVE, unless the user has
7036            * pressed ctrl or shift to affect available actions
7037            */
7038           if ((context->actions & GDK_ACTION_MOVE) != 0)
7039             *suggested_action = GDK_ACTION_MOVE;
7040         }
7041
7042       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7043                                        path, pos);
7044     }
7045   else
7046     {
7047       /* can't drop here */
7048       remove_open_timeout (tree_view);
7049
7050       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7051                                        NULL,
7052                                        GTK_TREE_VIEW_DROP_BEFORE);
7053     }
7054
7055   if (path)
7056     gtk_tree_path_free (path);
7057
7058   return TRUE;
7059 }
7060
7061 static GtkTreePath*
7062 get_logical_dest_row (GtkTreeView *tree_view,
7063                       gboolean    *path_down_mode,
7064                       gboolean    *drop_append_mode)
7065 {
7066   /* adjust path to point to the row the drop goes in front of */
7067   GtkTreePath *path = NULL;
7068   GtkTreeViewDropPosition pos;
7069
7070   g_return_val_if_fail (path_down_mode != NULL, NULL);
7071   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7072
7073   *path_down_mode = FALSE;
7074   *drop_append_mode = 0;
7075
7076   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7077
7078   if (path == NULL)
7079     return NULL;
7080
7081   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7082     ; /* do nothing */
7083   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7084            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7085     *path_down_mode = TRUE;
7086   else
7087     {
7088       GtkTreeIter iter;
7089       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7090
7091       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7092
7093       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7094           !gtk_tree_model_iter_next (model, &iter))
7095         *drop_append_mode = 1;
7096       else
7097         {
7098           *drop_append_mode = 0;
7099           gtk_tree_path_next (path);
7100         }
7101     }
7102
7103   return path;
7104 }
7105
7106 static gboolean
7107 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7108                                         GdkEventMotion   *event)
7109 {
7110   GtkWidget *widget = GTK_WIDGET (tree_view);
7111   GdkDragContext *context;
7112   TreeViewDragInfo *di;
7113   GtkTreePath *path = NULL;
7114   gint button;
7115   gint cell_x, cell_y;
7116   GtkTreeModel *model;
7117   gboolean retval = FALSE;
7118
7119   di = get_info (tree_view);
7120
7121   if (di == NULL || !di->source_set)
7122     goto out;
7123
7124   if (tree_view->priv->pressed_button < 0)
7125     goto out;
7126
7127   if (!gtk_drag_check_threshold (widget,
7128                                  tree_view->priv->press_start_x,
7129                                  tree_view->priv->press_start_y,
7130                                  event->x, event->y))
7131     goto out;
7132
7133   model = gtk_tree_view_get_model (tree_view);
7134
7135   if (model == NULL)
7136     goto out;
7137
7138   button = tree_view->priv->pressed_button;
7139   tree_view->priv->pressed_button = -1;
7140
7141   gtk_tree_view_get_path_at_pos (tree_view,
7142                                  tree_view->priv->press_start_x,
7143                                  tree_view->priv->press_start_y,
7144                                  &path,
7145                                  NULL,
7146                                  &cell_x,
7147                                  &cell_y);
7148
7149   if (path == NULL)
7150     goto out;
7151
7152   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7153       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7154                                            path))
7155     goto out;
7156
7157   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7158     goto out;
7159
7160   /* Now we can begin the drag */
7161
7162   retval = TRUE;
7163
7164   context = gtk_drag_begin (widget,
7165                             gtk_drag_source_get_target_list (widget),
7166                             di->source_actions,
7167                             button,
7168                             (GdkEvent*)event);
7169
7170   set_source_row (context, model, path);
7171
7172  out:
7173   if (path)
7174     gtk_tree_path_free (path);
7175
7176   return retval;
7177 }
7178
7179
7180 static void
7181 gtk_tree_view_drag_begin (GtkWidget      *widget,
7182                           GdkDragContext *context)
7183 {
7184   GtkTreeView *tree_view;
7185   GtkTreePath *path = NULL;
7186   gint cell_x, cell_y;
7187   cairo_surface_t *row_pix;
7188   TreeViewDragInfo *di;
7189
7190   tree_view = GTK_TREE_VIEW (widget);
7191
7192   /* if the user uses a custom DND source impl, we don't set the icon here */
7193   di = get_info (tree_view);
7194
7195   if (di == NULL || !di->source_set)
7196     return;
7197
7198   gtk_tree_view_get_path_at_pos (tree_view,
7199                                  tree_view->priv->press_start_x,
7200                                  tree_view->priv->press_start_y,
7201                                  &path,
7202                                  NULL,
7203                                  &cell_x,
7204                                  &cell_y);
7205
7206   g_return_if_fail (path != NULL);
7207
7208   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7209                                                 path);
7210   cairo_surface_set_device_offset (row_pix,
7211                                    /* the + 1 is for the black border in the icon */
7212                                    - (tree_view->priv->press_start_x + 1),
7213                                    - (cell_y + 1));
7214
7215   gtk_drag_set_icon_surface (context, row_pix);
7216
7217   cairo_surface_destroy (row_pix);
7218   gtk_tree_path_free (path);
7219 }
7220
7221 static void
7222 gtk_tree_view_drag_end (GtkWidget      *widget,
7223                         GdkDragContext *context)
7224 {
7225   /* do nothing */
7226 }
7227
7228 /* Default signal implementations for the drag signals */
7229 static void
7230 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7231                              GdkDragContext   *context,
7232                              GtkSelectionData *selection_data,
7233                              guint             info,
7234                              guint             time)
7235 {
7236   GtkTreeView *tree_view;
7237   GtkTreeModel *model;
7238   TreeViewDragInfo *di;
7239   GtkTreePath *source_row;
7240
7241   tree_view = GTK_TREE_VIEW (widget);
7242
7243   model = gtk_tree_view_get_model (tree_view);
7244
7245   if (model == NULL)
7246     return;
7247
7248   di = get_info (GTK_TREE_VIEW (widget));
7249
7250   if (di == NULL)
7251     return;
7252
7253   source_row = get_source_row (context);
7254
7255   if (source_row == NULL)
7256     return;
7257
7258   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7259    * any model; for DragSource models there are some other targets
7260    * we also support.
7261    */
7262
7263   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7264       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7265                                           source_row,
7266                                           selection_data))
7267     goto done;
7268
7269   /* If drag_data_get does nothing, try providing row data. */
7270   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7271     {
7272       gtk_tree_set_row_drag_data (selection_data,
7273                                   model,
7274                                   source_row);
7275     }
7276
7277  done:
7278   gtk_tree_path_free (source_row);
7279 }
7280
7281
7282 static void
7283 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7284                                 GdkDragContext *context)
7285 {
7286   TreeViewDragInfo *di;
7287   GtkTreeModel *model;
7288   GtkTreeView *tree_view;
7289   GtkTreePath *source_row;
7290
7291   tree_view = GTK_TREE_VIEW (widget);
7292   model = gtk_tree_view_get_model (tree_view);
7293
7294   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7295     return;
7296
7297   di = get_info (tree_view);
7298
7299   if (di == NULL)
7300     return;
7301
7302   source_row = get_source_row (context);
7303
7304   if (source_row == NULL)
7305     return;
7306
7307   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7308                                          source_row);
7309
7310   gtk_tree_path_free (source_row);
7311
7312   set_source_row (context, NULL, NULL);
7313 }
7314
7315 static void
7316 gtk_tree_view_drag_leave (GtkWidget      *widget,
7317                           GdkDragContext *context,
7318                           guint             time)
7319 {
7320   /* unset any highlight row */
7321   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7322                                    NULL,
7323                                    GTK_TREE_VIEW_DROP_BEFORE);
7324
7325   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7326   remove_open_timeout (GTK_TREE_VIEW (widget));
7327 }
7328
7329
7330 static gboolean
7331 gtk_tree_view_drag_motion (GtkWidget        *widget,
7332                            GdkDragContext   *context,
7333                            /* coordinates relative to the widget */
7334                            gint              x,
7335                            gint              y,
7336                            guint             time)
7337 {
7338   gboolean empty;
7339   GtkTreePath *path = NULL;
7340   GtkTreeViewDropPosition pos;
7341   GtkTreeView *tree_view;
7342   GdkDragAction suggested_action = 0;
7343   GdkAtom target;
7344
7345   tree_view = GTK_TREE_VIEW (widget);
7346
7347   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7348     return FALSE;
7349
7350   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7351
7352   /* we only know this *after* set_desination_row */
7353   empty = tree_view->priv->empty_view_drop;
7354
7355   if (path == NULL && !empty)
7356     {
7357       /* Can't drop here. */
7358       gdk_drag_status (context, 0, time);
7359     }
7360   else
7361     {
7362       if (tree_view->priv->open_dest_timeout == 0 &&
7363           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7364            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7365         {
7366           tree_view->priv->open_dest_timeout =
7367             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7368         }
7369       else
7370         {
7371           add_scroll_timeout (tree_view);
7372         }
7373
7374       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7375         {
7376           /* Request data so we can use the source row when
7377            * determining whether to accept the drop
7378            */
7379           set_status_pending (context, suggested_action);
7380           gtk_drag_get_data (widget, context, target, time);
7381         }
7382       else
7383         {
7384           set_status_pending (context, 0);
7385           gdk_drag_status (context, suggested_action, time);
7386         }
7387     }
7388
7389   if (path)
7390     gtk_tree_path_free (path);
7391
7392   return TRUE;
7393 }
7394
7395
7396 static gboolean
7397 gtk_tree_view_drag_drop (GtkWidget        *widget,
7398                          GdkDragContext   *context,
7399                          /* coordinates relative to the widget */
7400                          gint              x,
7401                          gint              y,
7402                          guint             time)
7403 {
7404   GtkTreeView *tree_view;
7405   GtkTreePath *path;
7406   GdkDragAction suggested_action = 0;
7407   GdkAtom target = GDK_NONE;
7408   TreeViewDragInfo *di;
7409   GtkTreeModel *model;
7410   gboolean path_down_mode;
7411   gboolean drop_append_mode;
7412
7413   tree_view = GTK_TREE_VIEW (widget);
7414
7415   model = gtk_tree_view_get_model (tree_view);
7416
7417   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7418   remove_open_timeout (GTK_TREE_VIEW (widget));
7419
7420   di = get_info (tree_view);
7421
7422   if (di == NULL)
7423     return FALSE;
7424
7425   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7426     return FALSE;
7427
7428   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7429     return FALSE;
7430
7431   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7432
7433   if (target != GDK_NONE && path != NULL)
7434     {
7435       /* in case a motion had requested drag data, change things so we
7436        * treat drag data receives as a drop.
7437        */
7438       set_status_pending (context, 0);
7439       set_dest_row (context, model, path,
7440                     path_down_mode, tree_view->priv->empty_view_drop,
7441                     drop_append_mode);
7442     }
7443
7444   if (path)
7445     gtk_tree_path_free (path);
7446
7447   /* Unset this thing */
7448   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7449                                    NULL,
7450                                    GTK_TREE_VIEW_DROP_BEFORE);
7451
7452   if (target != GDK_NONE)
7453     {
7454       gtk_drag_get_data (widget, context, target, time);
7455       return TRUE;
7456     }
7457   else
7458     return FALSE;
7459 }
7460
7461 static void
7462 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7463                                   GdkDragContext   *context,
7464                                   /* coordinates relative to the widget */
7465                                   gint              x,
7466                                   gint              y,
7467                                   GtkSelectionData *selection_data,
7468                                   guint             info,
7469                                   guint             time)
7470 {
7471   GtkTreePath *path;
7472   TreeViewDragInfo *di;
7473   gboolean accepted = FALSE;
7474   GtkTreeModel *model;
7475   GtkTreeView *tree_view;
7476   GtkTreePath *dest_row;
7477   GdkDragAction suggested_action;
7478   gboolean path_down_mode;
7479   gboolean drop_append_mode;
7480
7481   tree_view = GTK_TREE_VIEW (widget);
7482
7483   model = gtk_tree_view_get_model (tree_view);
7484
7485   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7486     return;
7487
7488   di = get_info (tree_view);
7489
7490   if (di == NULL)
7491     return;
7492
7493   suggested_action = get_status_pending (context);
7494
7495   if (suggested_action)
7496     {
7497       /* We are getting this data due to a request in drag_motion,
7498        * rather than due to a request in drag_drop, so we are just
7499        * supposed to call drag_status, not actually paste in the
7500        * data.
7501        */
7502       path = get_logical_dest_row (tree_view, &path_down_mode,
7503                                    &drop_append_mode);
7504
7505       if (path == NULL)
7506         suggested_action = 0;
7507       else if (path_down_mode)
7508         gtk_tree_path_down (path);
7509
7510       if (suggested_action)
7511         {
7512           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7513                                                      path,
7514                                                      selection_data))
7515             {
7516               if (path_down_mode)
7517                 {
7518                   path_down_mode = FALSE;
7519                   gtk_tree_path_up (path);
7520
7521                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7522                                                              path,
7523                                                              selection_data))
7524                     suggested_action = 0;
7525                 }
7526               else
7527                 suggested_action = 0;
7528             }
7529         }
7530
7531       gdk_drag_status (context, suggested_action, time);
7532
7533       if (path)
7534         gtk_tree_path_free (path);
7535
7536       /* If you can't drop, remove user drop indicator until the next motion */
7537       if (suggested_action == 0)
7538         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7539                                          NULL,
7540                                          GTK_TREE_VIEW_DROP_BEFORE);
7541
7542       return;
7543     }
7544
7545   dest_row = get_dest_row (context, &path_down_mode);
7546
7547   if (dest_row == NULL)
7548     return;
7549
7550   if (selection_data->length >= 0)
7551     {
7552       if (path_down_mode)
7553         {
7554           gtk_tree_path_down (dest_row);
7555           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7556                                                      dest_row, selection_data))
7557             gtk_tree_path_up (dest_row);
7558         }
7559     }
7560
7561   if (selection_data->length >= 0)
7562     {
7563       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7564                                                  dest_row,
7565                                                  selection_data))
7566         accepted = TRUE;
7567     }
7568
7569   gtk_drag_finish (context,
7570                    accepted,
7571                    (context->action == GDK_ACTION_MOVE),
7572                    time);
7573
7574   if (gtk_tree_path_get_depth (dest_row) == 1
7575       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7576     {
7577       /* special special case drag to "0", scroll to first item */
7578       if (!tree_view->priv->scroll_to_path)
7579         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7580     }
7581
7582   gtk_tree_path_free (dest_row);
7583
7584   /* drop dest_row */
7585   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7586 }
7587
7588
7589
7590 /* GtkContainer Methods
7591  */
7592
7593
7594 static void
7595 gtk_tree_view_remove (GtkContainer *container,
7596                       GtkWidget    *widget)
7597 {
7598   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7599   GtkTreeViewChild *child = NULL;
7600   GList *tmp_list;
7601
7602   tmp_list = tree_view->priv->children;
7603   while (tmp_list)
7604     {
7605       child = tmp_list->data;
7606       if (child->widget == widget)
7607         {
7608           gtk_widget_unparent (widget);
7609
7610           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7611           g_list_free_1 (tmp_list);
7612           g_slice_free (GtkTreeViewChild, child);
7613           return;
7614         }
7615
7616       tmp_list = tmp_list->next;
7617     }
7618
7619   tmp_list = tree_view->priv->columns;
7620
7621   while (tmp_list)
7622     {
7623       GtkTreeViewColumn *column;
7624       column = tmp_list->data;
7625       if (column->button == widget)
7626         {
7627           gtk_widget_unparent (widget);
7628           return;
7629         }
7630       tmp_list = tmp_list->next;
7631     }
7632 }
7633
7634 static void
7635 gtk_tree_view_forall (GtkContainer *container,
7636                       gboolean      include_internals,
7637                       GtkCallback   callback,
7638                       gpointer      callback_data)
7639 {
7640   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7641   GtkTreeViewChild *child = NULL;
7642   GtkTreeViewColumn *column;
7643   GList *tmp_list;
7644
7645   tmp_list = tree_view->priv->children;
7646   while (tmp_list)
7647     {
7648       child = tmp_list->data;
7649       tmp_list = tmp_list->next;
7650
7651       (* callback) (child->widget, callback_data);
7652     }
7653   if (include_internals == FALSE)
7654     return;
7655
7656   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7657     {
7658       column = tmp_list->data;
7659
7660       if (column->button)
7661         (* callback) (column->button, callback_data);
7662     }
7663 }
7664
7665 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7666  * cells. If so we draw one big row-spanning focus rectangle.
7667  */
7668 static gboolean
7669 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7670 {
7671   GList *list;
7672
7673   for (list = tree_view->priv->columns; list; list = list->next)
7674     {
7675       if (!((GtkTreeViewColumn *)list->data)->visible)
7676         continue;
7677       if (_gtk_tree_view_column_count_special_cells (list->data))
7678         return TRUE;
7679     }
7680
7681   return FALSE;
7682 }
7683
7684 static void
7685 column_sizing_notify (GObject    *object,
7686                       GParamSpec *pspec,
7687                       gpointer    data)
7688 {
7689   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7690
7691   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7692     /* disable fixed height mode */
7693     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7694 }
7695
7696 /**
7697  * gtk_tree_view_set_fixed_height_mode:
7698  * @tree_view: a #GtkTreeView
7699  * @enable: %TRUE to enable fixed height mode
7700  *
7701  * Enables or disables the fixed height mode of @tree_view.
7702  * Fixed height mode speeds up #GtkTreeView by assuming that all
7703  * rows have the same height.
7704  * Only enable this option if all rows are the same height and all
7705  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7706  *
7707  * Since: 2.6
7708  **/
7709 void
7710 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7711                                      gboolean     enable)
7712 {
7713   GList *l;
7714
7715   enable = enable != FALSE;
7716
7717   if (enable == tree_view->priv->fixed_height_mode)
7718     return;
7719
7720   if (!enable)
7721     {
7722       tree_view->priv->fixed_height_mode = 0;
7723       tree_view->priv->fixed_height = -1;
7724
7725       /* force a revalidation */
7726       install_presize_handler (tree_view);
7727     }
7728   else
7729     {
7730       /* make sure all columns are of type FIXED */
7731       for (l = tree_view->priv->columns; l; l = l->next)
7732         {
7733           GtkTreeViewColumn *c = l->data;
7734
7735           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7736         }
7737
7738       /* yes, we really have to do this is in a separate loop */
7739       for (l = tree_view->priv->columns; l; l = l->next)
7740         g_signal_connect (l->data, "notify::sizing",
7741                           G_CALLBACK (column_sizing_notify), tree_view);
7742
7743       tree_view->priv->fixed_height_mode = 1;
7744       tree_view->priv->fixed_height = -1;
7745
7746       if (tree_view->priv->tree)
7747         initialize_fixed_height_mode (tree_view);
7748     }
7749
7750   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7751 }
7752
7753 /**
7754  * gtk_tree_view_get_fixed_height_mode:
7755  * @tree_view: a #GtkTreeView
7756  *
7757  * Returns whether fixed height mode is turned on for @tree_view.
7758  *
7759  * Return value: %TRUE if @tree_view is in fixed height mode
7760  *
7761  * Since: 2.6
7762  **/
7763 gboolean
7764 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7765 {
7766   return tree_view->priv->fixed_height_mode;
7767 }
7768
7769 /* Returns TRUE if the focus is within the headers, after the focus operation is
7770  * done
7771  */
7772 static gboolean
7773 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7774                             GtkDirectionType  dir,
7775                             gboolean          clamp_column_visible)
7776 {
7777   GtkWidget *focus_child;
7778
7779   GList *last_column, *first_column;
7780   GList *tmp_list;
7781   gboolean rtl;
7782
7783   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7784     return FALSE;
7785
7786   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7787
7788   first_column = tree_view->priv->columns;
7789   while (first_column)
7790     {
7791       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7792           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7793           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7794            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7795         break;
7796       first_column = first_column->next;
7797     }
7798
7799   /* No headers are visible, or are focusable.  We can't focus in or out.
7800    */
7801   if (first_column == NULL)
7802     return FALSE;
7803
7804   last_column = g_list_last (tree_view->priv->columns);
7805   while (last_column)
7806     {
7807       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7808           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7809           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7810            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7811         break;
7812       last_column = last_column->prev;
7813     }
7814
7815
7816   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7817
7818   switch (dir)
7819     {
7820     case GTK_DIR_TAB_BACKWARD:
7821     case GTK_DIR_TAB_FORWARD:
7822     case GTK_DIR_UP:
7823     case GTK_DIR_DOWN:
7824       if (focus_child == NULL)
7825         {
7826           if (tree_view->priv->focus_column != NULL &&
7827               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7828             focus_child = tree_view->priv->focus_column->button;
7829           else
7830             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7831           gtk_widget_grab_focus (focus_child);
7832           break;
7833         }
7834       return FALSE;
7835
7836     case GTK_DIR_LEFT:
7837     case GTK_DIR_RIGHT:
7838       if (focus_child == NULL)
7839         {
7840           if (tree_view->priv->focus_column != NULL)
7841             focus_child = tree_view->priv->focus_column->button;
7842           else if (dir == GTK_DIR_LEFT)
7843             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7844           else
7845             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7846           gtk_widget_grab_focus (focus_child);
7847           break;
7848         }
7849
7850       if (gtk_widget_child_focus (focus_child, dir))
7851         {
7852           /* The focus moves inside the button. */
7853           /* This is probably a great example of bad UI */
7854           break;
7855         }
7856
7857       /* We need to move the focus among the row of buttons. */
7858       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7859         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7860           break;
7861
7862       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7863           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7864         {
7865           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7866           break;
7867         }
7868
7869       while (tmp_list)
7870         {
7871           GtkTreeViewColumn *column;
7872
7873           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7874             tmp_list = tmp_list->next;
7875           else
7876             tmp_list = tmp_list->prev;
7877
7878           if (tmp_list == NULL)
7879             {
7880               g_warning ("Internal button not found");
7881               break;
7882             }
7883           column = tmp_list->data;
7884           if (column->button &&
7885               column->visible &&
7886               gtk_widget_get_can_focus (column->button))
7887             {
7888               focus_child = column->button;
7889               gtk_widget_grab_focus (column->button);
7890               break;
7891             }
7892         }
7893       break;
7894     default:
7895       g_assert_not_reached ();
7896       break;
7897     }
7898
7899   /* if focus child is non-null, we assume it's been set to the current focus child
7900    */
7901   if (focus_child)
7902     {
7903       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7904         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7905           {
7906             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7907             break;
7908           }
7909
7910       if (clamp_column_visible)
7911         {
7912           gtk_tree_view_clamp_column_visible (tree_view,
7913                                               tree_view->priv->focus_column,
7914                                               FALSE);
7915         }
7916     }
7917
7918   return (focus_child != NULL);
7919 }
7920
7921 /* This function returns in 'path' the first focusable path, if the given path
7922  * is already focusable, it's the returned one.
7923  */
7924 static gboolean
7925 search_first_focusable_path (GtkTreeView  *tree_view,
7926                              GtkTreePath **path,
7927                              gboolean      search_forward,
7928                              GtkRBTree   **new_tree,
7929                              GtkRBNode   **new_node)
7930 {
7931   GtkRBTree *tree = NULL;
7932   GtkRBNode *node = NULL;
7933
7934   if (!path || !*path)
7935     return FALSE;
7936
7937   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7938
7939   if (!tree || !node)
7940     return FALSE;
7941
7942   while (node && row_is_separator (tree_view, NULL, *path))
7943     {
7944       if (search_forward)
7945         _gtk_rbtree_next_full (tree, node, &tree, &node);
7946       else
7947         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7948
7949       if (*path)
7950         gtk_tree_path_free (*path);
7951
7952       if (node)
7953         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7954       else
7955         *path = NULL;
7956     }
7957
7958   if (new_tree)
7959     *new_tree = tree;
7960
7961   if (new_node)
7962     *new_node = node;
7963
7964   return (*path != NULL);
7965 }
7966
7967 static gint
7968 gtk_tree_view_focus (GtkWidget        *widget,
7969                      GtkDirectionType  direction)
7970 {
7971   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7972   GtkContainer *container = GTK_CONTAINER (widget);
7973   GtkWidget *focus_child;
7974
7975   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
7976     return FALSE;
7977
7978   focus_child = gtk_container_get_focus_child (container);
7979
7980   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7981   /* Case 1.  Headers currently have focus. */
7982   if (focus_child)
7983     {
7984       switch (direction)
7985         {
7986         case GTK_DIR_LEFT:
7987         case GTK_DIR_RIGHT:
7988           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7989           return TRUE;
7990         case GTK_DIR_TAB_BACKWARD:
7991         case GTK_DIR_UP:
7992           return FALSE;
7993         case GTK_DIR_TAB_FORWARD:
7994         case GTK_DIR_DOWN:
7995           gtk_widget_grab_focus (widget);
7996           return TRUE;
7997         default:
7998           g_assert_not_reached ();
7999           return FALSE;
8000         }
8001     }
8002
8003   /* Case 2. We don't have focus at all. */
8004   if (!gtk_widget_has_focus (widget))
8005     {
8006       gtk_widget_grab_focus (widget);
8007       return TRUE;
8008     }
8009
8010   /* Case 3. We have focus already. */
8011   if (direction == GTK_DIR_TAB_BACKWARD)
8012     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8013   else if (direction == GTK_DIR_TAB_FORWARD)
8014     return FALSE;
8015
8016   /* Other directions caught by the keybindings */
8017   gtk_widget_grab_focus (widget);
8018   return TRUE;
8019 }
8020
8021 static void
8022 gtk_tree_view_grab_focus (GtkWidget *widget)
8023 {
8024   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8025
8026   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8027 }
8028
8029 static void
8030 gtk_tree_view_style_set (GtkWidget *widget,
8031                          GtkStyle *previous_style)
8032 {
8033   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8034   GtkStyle *style;
8035   GList *list;
8036   GtkTreeViewColumn *column;
8037
8038   if (gtk_widget_get_realized (widget))
8039     {
8040       style = gtk_widget_get_style (widget);
8041       gdk_window_set_background (tree_view->priv->bin_window,
8042                                  &style->base[gtk_widget_get_state (widget)]);
8043       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8044
8045       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8046       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8047     }
8048
8049   gtk_widget_style_get (widget,
8050                         "expander-size", &tree_view->priv->expander_size,
8051                         NULL);
8052   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8053
8054   for (list = tree_view->priv->columns; list; list = list->next)
8055     {
8056       column = list->data;
8057       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8058     }
8059
8060   tree_view->priv->fixed_height = -1;
8061   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8062
8063   gtk_widget_queue_resize (widget);
8064 }
8065
8066
8067 static void
8068 gtk_tree_view_set_focus_child (GtkContainer *container,
8069                                GtkWidget    *child)
8070 {
8071   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8072   GList *list;
8073
8074   for (list = tree_view->priv->columns; list; list = list->next)
8075     {
8076       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8077         {
8078           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8079           break;
8080         }
8081     }
8082
8083   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8084 }
8085
8086 static gboolean
8087 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8088                                 GtkMovementStep    step,
8089                                 gint               count)
8090 {
8091   GdkModifierType state;
8092
8093   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8094   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8095                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8096                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8097                         step == GTK_MOVEMENT_PAGES ||
8098                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8099
8100   if (tree_view->priv->tree == NULL)
8101     return FALSE;
8102   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8103     return FALSE;
8104
8105   gtk_tree_view_stop_editing (tree_view, FALSE);
8106   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8107   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8108
8109   if (gtk_get_current_event_state (&state))
8110     {
8111       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8112         tree_view->priv->ctrl_pressed = TRUE;
8113       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8114         tree_view->priv->shift_pressed = TRUE;
8115     }
8116   /* else we assume not pressed */
8117
8118   switch (step)
8119     {
8120       /* currently we make no distinction.  When we go bi-di, we need to */
8121     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8122     case GTK_MOVEMENT_VISUAL_POSITIONS:
8123       gtk_tree_view_move_cursor_left_right (tree_view, count);
8124       break;
8125     case GTK_MOVEMENT_DISPLAY_LINES:
8126       gtk_tree_view_move_cursor_up_down (tree_view, count);
8127       break;
8128     case GTK_MOVEMENT_PAGES:
8129       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8130       break;
8131     case GTK_MOVEMENT_BUFFER_ENDS:
8132       gtk_tree_view_move_cursor_start_end (tree_view, count);
8133       break;
8134     default:
8135       g_assert_not_reached ();
8136     }
8137
8138   tree_view->priv->ctrl_pressed = FALSE;
8139   tree_view->priv->shift_pressed = FALSE;
8140
8141   return TRUE;
8142 }
8143
8144 static void
8145 gtk_tree_view_put (GtkTreeView *tree_view,
8146                    GtkWidget   *child_widget,
8147                    /* in bin_window coordinates */
8148                    gint         x,
8149                    gint         y,
8150                    gint         width,
8151                    gint         height)
8152 {
8153   GtkTreeViewChild *child;
8154
8155   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8156   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8157
8158   child = g_slice_new (GtkTreeViewChild);
8159
8160   child->widget = child_widget;
8161   child->x = x;
8162   child->y = y;
8163   child->width = width;
8164   child->height = height;
8165
8166   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8167
8168   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8169     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8170
8171   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8172 }
8173
8174 void
8175 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8176                                   GtkWidget   *widget,
8177                                   /* in tree coordinates */
8178                                   gint         x,
8179                                   gint         y,
8180                                   gint         width,
8181                                   gint         height)
8182 {
8183   GtkTreeViewChild *child = NULL;
8184   GList *list;
8185   GdkRectangle allocation;
8186
8187   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8188   g_return_if_fail (GTK_IS_WIDGET (widget));
8189
8190   for (list = tree_view->priv->children; list; list = list->next)
8191     {
8192       if (((GtkTreeViewChild *)list->data)->widget == widget)
8193         {
8194           child = list->data;
8195           break;
8196         }
8197     }
8198   if (child == NULL)
8199     return;
8200
8201   allocation.x = child->x = x;
8202   allocation.y = child->y = y;
8203   allocation.width = child->width = width;
8204   allocation.height = child->height = height;
8205
8206   if (gtk_widget_get_realized (widget))
8207     gtk_widget_size_allocate (widget, &allocation);
8208 }
8209
8210
8211 /* TreeModel Callbacks
8212  */
8213
8214 static void
8215 gtk_tree_view_row_changed (GtkTreeModel *model,
8216                            GtkTreePath  *path,
8217                            GtkTreeIter  *iter,
8218                            gpointer      data)
8219 {
8220   GtkTreeView *tree_view = (GtkTreeView *)data;
8221   GtkRBTree *tree;
8222   GtkRBNode *node;
8223   gboolean free_path = FALSE;
8224   GList *list;
8225   GtkTreePath *cursor_path;
8226
8227   g_return_if_fail (path != NULL || iter != NULL);
8228
8229   if (tree_view->priv->cursor != NULL)
8230     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8231   else
8232     cursor_path = NULL;
8233
8234   if (tree_view->priv->edited_column &&
8235       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8236     gtk_tree_view_stop_editing (tree_view, TRUE);
8237
8238   if (cursor_path != NULL)
8239     gtk_tree_path_free (cursor_path);
8240
8241   if (path == NULL)
8242     {
8243       path = gtk_tree_model_get_path (model, iter);
8244       free_path = TRUE;
8245     }
8246   else if (iter == NULL)
8247     gtk_tree_model_get_iter (model, iter, path);
8248
8249   if (_gtk_tree_view_find_node (tree_view,
8250                                 path,
8251                                 &tree,
8252                                 &node))
8253     /* We aren't actually showing the node */
8254     goto done;
8255
8256   if (tree == NULL)
8257     goto done;
8258
8259   if (tree_view->priv->fixed_height_mode
8260       && tree_view->priv->fixed_height >= 0)
8261     {
8262       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8263       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8264         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8265     }
8266   else
8267     {
8268       _gtk_rbtree_node_mark_invalid (tree, node);
8269       for (list = tree_view->priv->columns; list; list = list->next)
8270         {
8271           GtkTreeViewColumn *column;
8272
8273           column = list->data;
8274           if (! column->visible)
8275             continue;
8276
8277           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8278             {
8279               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8280             }
8281         }
8282     }
8283
8284  done:
8285   if (!tree_view->priv->fixed_height_mode &&
8286       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8287     install_presize_handler (tree_view);
8288   if (free_path)
8289     gtk_tree_path_free (path);
8290 }
8291
8292 static void
8293 gtk_tree_view_row_inserted (GtkTreeModel *model,
8294                             GtkTreePath  *path,
8295                             GtkTreeIter  *iter,
8296                             gpointer      data)
8297 {
8298   GtkTreeView *tree_view = (GtkTreeView *) data;
8299   gint *indices;
8300   GtkRBTree *tmptree, *tree;
8301   GtkRBNode *tmpnode = NULL;
8302   gint depth;
8303   gint i = 0;
8304   gint height;
8305   gboolean free_path = FALSE;
8306   gboolean node_visible = TRUE;
8307
8308   g_return_if_fail (path != NULL || iter != NULL);
8309
8310   if (tree_view->priv->fixed_height_mode
8311       && tree_view->priv->fixed_height >= 0)
8312     height = tree_view->priv->fixed_height;
8313   else
8314     height = 0;
8315
8316   if (path == NULL)
8317     {
8318       path = gtk_tree_model_get_path (model, iter);
8319       free_path = TRUE;
8320     }
8321   else if (iter == NULL)
8322     gtk_tree_model_get_iter (model, iter, path);
8323
8324   if (tree_view->priv->tree == NULL)
8325     tree_view->priv->tree = _gtk_rbtree_new ();
8326
8327   tmptree = tree = tree_view->priv->tree;
8328
8329   /* Update all row-references */
8330   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8331   depth = gtk_tree_path_get_depth (path);
8332   indices = gtk_tree_path_get_indices (path);
8333
8334   /* First, find the parent tree */
8335   while (i < depth - 1)
8336     {
8337       if (tmptree == NULL)
8338         {
8339           /* We aren't showing the node */
8340           node_visible = FALSE;
8341           goto done;
8342         }
8343
8344       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8345       if (tmpnode == NULL)
8346         {
8347           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8348                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8349                      "before the parent was inserted.");
8350           goto done;
8351         }
8352       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8353         {
8354           /* FIXME enforce correct behavior on model, probably */
8355           /* In theory, the model should have emitted has_child_toggled here.  We
8356            * try to catch it anyway, just to be safe, in case the model hasn't.
8357            */
8358           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8359                                                            tree,
8360                                                            tmpnode);
8361           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8362           gtk_tree_path_free (tmppath);
8363           goto done;
8364         }
8365
8366       tmptree = tmpnode->children;
8367       tree = tmptree;
8368       i++;
8369     }
8370
8371   if (tree == NULL)
8372     {
8373       node_visible = FALSE;
8374       goto done;
8375     }
8376
8377   /* ref the node */
8378   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8379   if (indices[depth - 1] == 0)
8380     {
8381       tmpnode = _gtk_rbtree_find_count (tree, 1);
8382       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8383     }
8384   else
8385     {
8386       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8387       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8388     }
8389
8390  done:
8391   if (height > 0)
8392     {
8393       if (tree)
8394         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8395
8396       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8397         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8398       else
8399         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8400     }
8401   else
8402     install_presize_handler (tree_view);
8403   if (free_path)
8404     gtk_tree_path_free (path);
8405 }
8406
8407 static void
8408 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8409                                      GtkTreePath  *path,
8410                                      GtkTreeIter  *iter,
8411                                      gpointer      data)
8412 {
8413   GtkTreeView *tree_view = (GtkTreeView *)data;
8414   GtkTreeIter real_iter;
8415   gboolean has_child;
8416   GtkRBTree *tree;
8417   GtkRBNode *node;
8418   gboolean free_path = FALSE;
8419
8420   g_return_if_fail (path != NULL || iter != NULL);
8421
8422   if (iter)
8423     real_iter = *iter;
8424
8425   if (path == NULL)
8426     {
8427       path = gtk_tree_model_get_path (model, iter);
8428       free_path = TRUE;
8429     }
8430   else if (iter == NULL)
8431     gtk_tree_model_get_iter (model, &real_iter, path);
8432
8433   if (_gtk_tree_view_find_node (tree_view,
8434                                 path,
8435                                 &tree,
8436                                 &node))
8437     /* We aren't actually showing the node */
8438     goto done;
8439
8440   if (tree == NULL)
8441     goto done;
8442
8443   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8444   /* Sanity check.
8445    */
8446   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8447     goto done;
8448
8449   if (has_child)
8450     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8451   else
8452     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8453
8454   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8455     {
8456       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8457       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8458         {
8459           GList *list;
8460
8461           for (list = tree_view->priv->columns; list; list = list->next)
8462             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8463               {
8464                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8465                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8466                 break;
8467               }
8468         }
8469       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8470     }
8471   else
8472     {
8473       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8474     }
8475
8476  done:
8477   if (free_path)
8478     gtk_tree_path_free (path);
8479 }
8480
8481 static void
8482 count_children_helper (GtkRBTree *tree,
8483                        GtkRBNode *node,
8484                        gpointer   data)
8485 {
8486   if (node->children)
8487     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8488   (*((gint *)data))++;
8489 }
8490
8491 static void
8492 check_selection_helper (GtkRBTree *tree,
8493                         GtkRBNode *node,
8494                         gpointer   data)
8495 {
8496   gint *value = (gint *)data;
8497
8498   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8499
8500   if (node->children && !*value)
8501     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8502 }
8503
8504 static void
8505 gtk_tree_view_row_deleted (GtkTreeModel *model,
8506                            GtkTreePath  *path,
8507                            gpointer      data)
8508 {
8509   GtkTreeView *tree_view = (GtkTreeView *)data;
8510   GtkRBTree *tree;
8511   GtkRBNode *node;
8512   GList *list;
8513   gint selection_changed = FALSE;
8514
8515   g_return_if_fail (path != NULL);
8516
8517   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8518
8519   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8520     return;
8521
8522   if (tree == NULL)
8523     return;
8524
8525   /* check if the selection has been changed */
8526   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8527                         check_selection_helper, &selection_changed);
8528
8529   for (list = tree_view->priv->columns; list; list = list->next)
8530     if (((GtkTreeViewColumn *)list->data)->visible &&
8531         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8532       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8533
8534   /* Ensure we don't have a dangling pointer to a dead node */
8535   ensure_unprelighted (tree_view);
8536
8537   /* Cancel editting if we've started */
8538   gtk_tree_view_stop_editing (tree_view, TRUE);
8539
8540   /* If we have a node expanded/collapsed timeout, remove it */
8541   remove_expand_collapse_timeout (tree_view);
8542
8543   if (tree_view->priv->destroy_count_func)
8544     {
8545       gint child_count = 0;
8546       if (node->children)
8547         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8548       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8549     }
8550
8551   if (tree->root->count == 1)
8552     {
8553       if (tree_view->priv->tree == tree)
8554         tree_view->priv->tree = NULL;
8555
8556       _gtk_rbtree_remove (tree);
8557     }
8558   else
8559     {
8560       _gtk_rbtree_remove_node (tree, node);
8561     }
8562
8563   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8564     {
8565       gtk_tree_row_reference_free (tree_view->priv->top_row);
8566       tree_view->priv->top_row = NULL;
8567     }
8568
8569   install_scroll_sync_handler (tree_view);
8570
8571   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8572
8573   if (selection_changed)
8574     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8575 }
8576
8577 static void
8578 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8579                               GtkTreePath  *parent,
8580                               GtkTreeIter  *iter,
8581                               gint         *new_order,
8582                               gpointer      data)
8583 {
8584   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8585   GtkRBTree *tree;
8586   GtkRBNode *node;
8587   gint len;
8588
8589   len = gtk_tree_model_iter_n_children (model, iter);
8590
8591   if (len < 2)
8592     return;
8593
8594   gtk_tree_row_reference_reordered (G_OBJECT (data),
8595                                     parent,
8596                                     iter,
8597                                     new_order);
8598
8599   if (_gtk_tree_view_find_node (tree_view,
8600                                 parent,
8601                                 &tree,
8602                                 &node))
8603     return;
8604
8605   /* We need to special case the parent path */
8606   if (tree == NULL)
8607     tree = tree_view->priv->tree;
8608   else
8609     tree = node->children;
8610
8611   if (tree == NULL)
8612     return;
8613
8614   if (tree_view->priv->edited_column)
8615     gtk_tree_view_stop_editing (tree_view, TRUE);
8616
8617   /* we need to be unprelighted */
8618   ensure_unprelighted (tree_view);
8619
8620   /* clear the timeout */
8621   cancel_arrow_animation (tree_view);
8622
8623   _gtk_rbtree_reorder (tree, new_order, len);
8624
8625   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8626
8627   gtk_tree_view_dy_to_top_row (tree_view);
8628 }
8629
8630
8631 /* Internal tree functions
8632  */
8633
8634
8635 static void
8636 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8637                                      GtkRBTree         *tree,
8638                                      GtkTreeViewColumn *column,
8639                                      gint              *x1,
8640                                      gint              *x2)
8641 {
8642   GtkTreeViewColumn *tmp_column = NULL;
8643   gint total_width;
8644   GList *list;
8645   gboolean rtl;
8646
8647   if (x1)
8648     *x1 = 0;
8649
8650   if (x2)
8651     *x2 = 0;
8652
8653   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8654
8655   total_width = 0;
8656   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8657        list;
8658        list = (rtl ? list->prev : list->next))
8659     {
8660       tmp_column = list->data;
8661
8662       if (tmp_column == column)
8663         break;
8664
8665       if (tmp_column->visible)
8666         total_width += tmp_column->width;
8667     }
8668
8669   if (tmp_column != column)
8670     {
8671       g_warning (G_STRLOC": passed-in column isn't in the tree");
8672       return;
8673     }
8674
8675   if (x1)
8676     *x1 = total_width;
8677
8678   if (x2)
8679     {
8680       if (column->visible)
8681         *x2 = total_width + column->width;
8682       else
8683         *x2 = total_width; /* width of 0 */
8684     }
8685 }
8686 static void
8687 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8688                                 GtkRBTree   *tree,
8689                                 gint        *x1,
8690                                 gint        *x2)
8691 {
8692   gint x_offset = 0;
8693   GList *list;
8694   GtkTreeViewColumn *tmp_column = NULL;
8695   gint total_width;
8696   gboolean indent_expanders;
8697   gboolean rtl;
8698
8699   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8700
8701   total_width = 0;
8702   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8703        list;
8704        list = (rtl ? list->prev : list->next))
8705     {
8706       tmp_column = list->data;
8707
8708       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8709         {
8710           if (rtl)
8711             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8712           else
8713             x_offset = total_width;
8714           break;
8715         }
8716
8717       if (tmp_column->visible)
8718         total_width += tmp_column->width;
8719     }
8720
8721   gtk_widget_style_get (GTK_WIDGET (tree_view),
8722                         "indent-expanders", &indent_expanders,
8723                         NULL);
8724
8725   if (indent_expanders)
8726     {
8727       if (rtl)
8728         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8729       else
8730         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8731     }
8732
8733   *x1 = x_offset;
8734
8735   if (tmp_column && tmp_column->visible)
8736     /* +1 because x2 isn't included in the range. */
8737     *x2 = *x1 + tree_view->priv->expander_size + 1;
8738   else
8739     *x2 = *x1;
8740 }
8741
8742 static void
8743 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8744                           GtkRBTree   *tree,
8745                           GtkTreeIter *iter,
8746                           gint         depth,
8747                           gboolean     recurse)
8748 {
8749   GtkRBNode *temp = NULL;
8750   GtkTreePath *path = NULL;
8751   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8752
8753   do
8754     {
8755       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8756       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8757
8758       if (tree_view->priv->fixed_height > 0)
8759         {
8760           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8761             {
8762               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8763               _gtk_rbtree_node_mark_valid (tree, temp);
8764             }
8765         }
8766
8767       if (is_list)
8768         continue;
8769
8770       if (recurse)
8771         {
8772           GtkTreeIter child;
8773
8774           if (!path)
8775             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8776           else
8777             gtk_tree_path_next (path);
8778
8779           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8780             {
8781               gboolean expand;
8782
8783               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8784
8785               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8786                   && !expand)
8787                 {
8788                   temp->children = _gtk_rbtree_new ();
8789                   temp->children->parent_tree = tree;
8790                   temp->children->parent_node = temp;
8791                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8792                 }
8793             }
8794         }
8795
8796       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8797         {
8798           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8799             temp->flags ^= GTK_RBNODE_IS_PARENT;
8800         }
8801     }
8802   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8803
8804   if (path)
8805     gtk_tree_path_free (path);
8806 }
8807
8808 /* Make sure the node is visible vertically */
8809 static void
8810 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8811                                   GtkRBTree   *tree,
8812                                   GtkRBNode   *node)
8813 {
8814   gint node_dy, height;
8815   GtkTreePath *path = NULL;
8816
8817   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8818     return;
8819
8820   /* just return if the node is visible, avoiding a costly expose */
8821   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8822   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8823   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8824       && node_dy >= tree_view->priv->vadjustment->value
8825       && node_dy + height <= (tree_view->priv->vadjustment->value
8826                               + tree_view->priv->vadjustment->page_size))
8827     return;
8828
8829   path = _gtk_tree_view_find_path (tree_view, tree, node);
8830   if (path)
8831     {
8832       /* We process updates because we want to clear old selected items when we scroll.
8833        * if this is removed, we get a "selection streak" at the bottom. */
8834       gtk_tree_view_bin_process_updates (tree_view);
8835
8836       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8837       gtk_tree_path_free (path);
8838     }
8839 }
8840
8841 static void
8842 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8843                                     GtkTreeViewColumn *column,
8844                                     gboolean           focus_to_cell)
8845 {
8846   GtkAllocation allocation;
8847   gint x, width;
8848
8849   if (column == NULL)
8850     return;
8851
8852   gtk_widget_get_allocation (column->button, &allocation);
8853   x = allocation.x;
8854   width = allocation.width;
8855
8856   if (width > tree_view->priv->hadjustment->page_size)
8857     {
8858       /* The column is larger than the horizontal page size.  If the
8859        * column has cells which can be focussed individually, then we make
8860        * sure the cell which gets focus is fully visible (if even the
8861        * focus cell is bigger than the page size, we make sure the
8862        * left-hand side of the cell is visible).
8863        *
8864        * If the column does not have those so-called special cells, we
8865        * make sure the left-hand side of the column is visible.
8866        */
8867
8868       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8869         {
8870           GtkTreePath *cursor_path;
8871           GdkRectangle background_area, cell_area, focus_area;
8872
8873           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8874
8875           gtk_tree_view_get_cell_area (tree_view,
8876                                        cursor_path, column, &cell_area);
8877           gtk_tree_view_get_background_area (tree_view,
8878                                              cursor_path, column,
8879                                              &background_area);
8880
8881           gtk_tree_path_free (cursor_path);
8882
8883           _gtk_tree_view_column_get_focus_area (column,
8884                                                 &background_area,
8885                                                 &cell_area,
8886                                                 &focus_area);
8887
8888           x = focus_area.x;
8889           width = focus_area.width;
8890
8891           if (width < tree_view->priv->hadjustment->page_size)
8892             {
8893               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8894                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8895                                           x + width - tree_view->priv->hadjustment->page_size);
8896               else if (tree_view->priv->hadjustment->value > x)
8897                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8898             }
8899         }
8900
8901       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8902     }
8903   else
8904     {
8905       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8906           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8907                                     x + width - tree_view->priv->hadjustment->page_size);
8908       else if (tree_view->priv->hadjustment->value > x)
8909         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8910   }
8911 }
8912
8913 /* This function could be more efficient.  I'll optimize it if profiling seems
8914  * to imply that it is important */
8915 GtkTreePath *
8916 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8917                           GtkRBTree   *tree,
8918                           GtkRBNode   *node)
8919 {
8920   GtkTreePath *path;
8921   GtkRBTree *tmp_tree;
8922   GtkRBNode *tmp_node, *last;
8923   gint count;
8924
8925   path = gtk_tree_path_new ();
8926
8927   g_return_val_if_fail (node != NULL, path);
8928   g_return_val_if_fail (node != tree->nil, path);
8929
8930   count = 1 + node->left->count;
8931
8932   last = node;
8933   tmp_node = node->parent;
8934   tmp_tree = tree;
8935   while (tmp_tree)
8936     {
8937       while (tmp_node != tmp_tree->nil)
8938         {
8939           if (tmp_node->right == last)
8940             count += 1 + tmp_node->left->count;
8941           last = tmp_node;
8942           tmp_node = tmp_node->parent;
8943         }
8944       gtk_tree_path_prepend_index (path, count - 1);
8945       last = tmp_tree->parent_node;
8946       tmp_tree = tmp_tree->parent_tree;
8947       if (last)
8948         {
8949           count = 1 + last->left->count;
8950           tmp_node = last->parent;
8951         }
8952     }
8953   return path;
8954 }
8955
8956 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
8957  * invalid (ie. points to a node that's not in the tree), *tree and *node are
8958  * both set to NULL.
8959  */
8960 gboolean
8961 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
8962                           GtkTreePath  *path,
8963                           GtkRBTree   **tree,
8964                           GtkRBNode   **node)
8965 {
8966   GtkRBNode *tmpnode = NULL;
8967   GtkRBTree *tmptree = tree_view->priv->tree;
8968   gint *indices = gtk_tree_path_get_indices (path);
8969   gint depth = gtk_tree_path_get_depth (path);
8970   gint i = 0;
8971
8972   *node = NULL;
8973   *tree = NULL;
8974
8975   if (depth == 0 || tmptree == NULL)
8976     return FALSE;
8977   do
8978     {
8979       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8980       ++i;
8981       if (tmpnode == NULL)
8982         {
8983           *tree = NULL;
8984           *node = NULL;
8985           return FALSE;
8986         }
8987       if (i >= depth)
8988         {
8989           *tree = tmptree;
8990           *node = tmpnode;
8991           return FALSE;
8992         }
8993       *tree = tmptree;
8994       *node = tmpnode;
8995       tmptree = tmpnode->children;
8996       if (tmptree == NULL)
8997         return TRUE;
8998     }
8999   while (1);
9000 }
9001
9002 static gboolean
9003 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9004                                   GtkTreeViewColumn *column)
9005 {
9006   GList *list;
9007
9008   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9009     return FALSE;
9010
9011   if (tree_view->priv->expander_column != NULL)
9012     {
9013       if (tree_view->priv->expander_column == column)
9014         return TRUE;
9015       return FALSE;
9016     }
9017   else
9018     {
9019       for (list = tree_view->priv->columns;
9020            list;
9021            list = list->next)
9022         if (((GtkTreeViewColumn *)list->data)->visible)
9023           break;
9024       if (list && list->data == column)
9025         return TRUE;
9026     }
9027   return FALSE;
9028 }
9029
9030 static void
9031 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9032                                 guint           keyval,
9033                                 guint           modmask,
9034                                 gboolean        add_shifted_binding,
9035                                 GtkMovementStep step,
9036                                 gint            count)
9037 {
9038
9039   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9040                                 "move-cursor", 2,
9041                                 G_TYPE_ENUM, step,
9042                                 G_TYPE_INT, count);
9043
9044   if (add_shifted_binding)
9045     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9046                                   "move-cursor", 2,
9047                                   G_TYPE_ENUM, step,
9048                                   G_TYPE_INT, count);
9049
9050   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9051    return;
9052
9053   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9054                                 "move-cursor", 2,
9055                                 G_TYPE_ENUM, step,
9056                                 G_TYPE_INT, count);
9057
9058   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9059                                 "move-cursor", 2,
9060                                 G_TYPE_ENUM, step,
9061                                 G_TYPE_INT, count);
9062 }
9063
9064 static gint
9065 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9066                                  GtkTreeIter  *iter,
9067                                  GtkRBTree    *tree,
9068                                  GtkRBNode    *node)
9069 {
9070   gint retval = FALSE;
9071   do
9072     {
9073       g_return_val_if_fail (node != NULL, FALSE);
9074
9075       if (node->children)
9076         {
9077           GtkTreeIter child;
9078           GtkRBTree *new_tree;
9079           GtkRBNode *new_node;
9080
9081           new_tree = node->children;
9082           new_node = new_tree->root;
9083
9084           while (new_node && new_node->left != new_tree->nil)
9085             new_node = new_node->left;
9086
9087           if (!gtk_tree_model_iter_children (model, &child, iter))
9088             return FALSE;
9089
9090           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9091         }
9092
9093       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9094         retval = TRUE;
9095       gtk_tree_model_unref_node (model, iter);
9096       node = _gtk_rbtree_next (tree, node);
9097     }
9098   while (gtk_tree_model_iter_next (model, iter));
9099
9100   return retval;
9101 }
9102
9103 static gint
9104 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9105                                               GtkRBTree   *tree)
9106 {
9107   GtkTreeIter iter;
9108   GtkTreePath *path;
9109   GtkRBNode *node;
9110   gint retval;
9111
9112   if (!tree)
9113     return FALSE;
9114
9115   node = tree->root;
9116   while (node && node->left != tree->nil)
9117     node = node->left;
9118
9119   g_return_val_if_fail (node != NULL, FALSE);
9120   path = _gtk_tree_view_find_path (tree_view, tree, node);
9121   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9122                            &iter, path);
9123   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9124   gtk_tree_path_free (path);
9125
9126   return retval;
9127 }
9128
9129 static void
9130 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9131                                     GtkTreeViewColumn *column)
9132 {
9133   GtkTreeViewColumn *left_column;
9134   GtkTreeViewColumn *cur_column = NULL;
9135   GtkTreeViewColumnReorder *reorder;
9136   gboolean rtl;
9137   GList *tmp_list;
9138   gint left;
9139
9140   /* We want to precalculate the motion list such that we know what column slots
9141    * are available.
9142    */
9143   left_column = NULL;
9144   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9145
9146   /* First, identify all possible drop spots */
9147   if (rtl)
9148     tmp_list = g_list_last (tree_view->priv->columns);
9149   else
9150     tmp_list = g_list_first (tree_view->priv->columns);
9151
9152   while (tmp_list)
9153     {
9154       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9155       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9156
9157       if (cur_column->visible == FALSE)
9158         continue;
9159
9160       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9161       if (left_column != column && cur_column != column &&
9162           tree_view->priv->column_drop_func &&
9163           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9164         {
9165           left_column = cur_column;
9166           continue;
9167         }
9168       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9169       reorder->left_column = left_column;
9170       left_column = reorder->right_column = cur_column;
9171
9172       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9173     }
9174
9175   /* Add the last one */
9176   if (tree_view->priv->column_drop_func == NULL ||
9177       ((left_column != column) &&
9178        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9179     {
9180       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9181       reorder->left_column = left_column;
9182       reorder->right_column = NULL;
9183       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9184     }
9185
9186   /* We quickly check to see if it even makes sense to reorder columns. */
9187   /* If there is nothing that can be moved, then we return */
9188
9189   if (tree_view->priv->column_drag_info == NULL)
9190     return;
9191
9192   /* We know there are always 2 slots possbile, as you can always return column. */
9193   /* If that's all there is, return */
9194   if (tree_view->priv->column_drag_info->next == NULL ||
9195       (tree_view->priv->column_drag_info->next->next == NULL &&
9196        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9197        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9198     {
9199       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9200         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9201       g_list_free (tree_view->priv->column_drag_info);
9202       tree_view->priv->column_drag_info = NULL;
9203       return;
9204     }
9205   /* We fill in the ranges for the columns, now that we've isolated them */
9206   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9207
9208   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9209     {
9210       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9211
9212       reorder->left_align = left;
9213       if (tmp_list->next != NULL)
9214         {
9215           GtkAllocation right_allocation, left_allocation;
9216
9217           g_assert (tmp_list->next->data);
9218
9219           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9220           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9221           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9222         }
9223       else
9224         {
9225           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9226                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9227         }
9228     }
9229 }
9230
9231 void
9232 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9233                                   GtkTreeViewColumn *column,
9234                                   GdkDevice         *device)
9235 {
9236   GdkEvent *send_event;
9237   GtkAllocation allocation;
9238   GtkAllocation button_allocation;
9239   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9240   GdkDisplay *display = gdk_screen_get_display (screen);
9241
9242   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9243   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9244
9245   gtk_tree_view_set_column_drag_info (tree_view, column);
9246
9247   if (tree_view->priv->column_drag_info == NULL)
9248     return;
9249
9250   if (tree_view->priv->drag_window == NULL)
9251     {
9252       GdkWindowAttr attributes;
9253       guint attributes_mask;
9254
9255       gtk_widget_get_allocation (column->button, &button_allocation);
9256
9257       attributes.window_type = GDK_WINDOW_CHILD;
9258       attributes.wclass = GDK_INPUT_OUTPUT;
9259       attributes.x = button_allocation.x;
9260       attributes.y = 0;
9261       attributes.width = button_allocation.width;
9262       attributes.height = button_allocation.height;
9263       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9264       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9265       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9266
9267       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9268                                                      &attributes,
9269                                                      attributes_mask);
9270       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9271     }
9272
9273   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9274   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9275
9276   gtk_grab_remove (column->button);
9277
9278   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9279   send_event->crossing.send_event = TRUE;
9280   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9281   send_event->crossing.subwindow = NULL;
9282   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9283   send_event->crossing.time = GDK_CURRENT_TIME;
9284   gdk_event_set_device (send_event, device);
9285
9286   gtk_propagate_event (column->button, send_event);
9287   gdk_event_free (send_event);
9288
9289   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9290   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9291   send_event->button.send_event = TRUE;
9292   send_event->button.time = GDK_CURRENT_TIME;
9293   send_event->button.x = -1;
9294   send_event->button.y = -1;
9295   send_event->button.axes = NULL;
9296   send_event->button.state = 0;
9297   send_event->button.button = 1;
9298   send_event->button.x_root = 0;
9299   send_event->button.y_root = 0;
9300   gdk_event_set_device (send_event, device);
9301
9302   gtk_propagate_event (column->button, send_event);
9303   gdk_event_free (send_event);
9304
9305   /* Kids, don't try this at home */
9306   g_object_ref (column->button);
9307   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9308   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9309   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9310   g_object_unref (column->button);
9311
9312   gtk_widget_get_allocation (column->button, &button_allocation);
9313   tree_view->priv->drag_column_x = button_allocation.x;
9314   allocation = button_allocation;
9315   allocation.x = 0;
9316   gtk_widget_size_allocate (column->button, &allocation);
9317   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9318
9319   tree_view->priv->drag_column = column;
9320   gdk_window_show (tree_view->priv->drag_window);
9321
9322   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9323   while (gtk_events_pending ())
9324     gtk_main_iteration ();
9325
9326   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9327   gdk_pointer_grab (tree_view->priv->drag_window,
9328                     FALSE,
9329                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9330                     NULL, NULL, GDK_CURRENT_TIME);
9331   gdk_keyboard_grab (tree_view->priv->drag_window,
9332                      FALSE,
9333                      GDK_CURRENT_TIME);
9334 }
9335
9336 static void
9337 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9338                                 GtkRBTree          *tree,
9339                                 GtkRBNode          *node)
9340 {
9341   GtkAllocation allocation;
9342   GdkRectangle rect;
9343
9344   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9345     return;
9346
9347   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9348   rect.x = 0;
9349   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9350
9351   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9352   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9353
9354   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9355 }
9356
9357 void
9358 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9359                                 GtkRBTree          *tree,
9360                                 GtkRBNode          *node,
9361                                 const GdkRectangle *clip_rect)
9362 {
9363   GtkAllocation allocation;
9364   GdkRectangle rect;
9365
9366   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9367     return;
9368
9369   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9370   rect.x = 0;
9371   rect.width = MAX (tree_view->priv->width, allocation.width);
9372
9373   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9374   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9375
9376   if (clip_rect)
9377     {
9378       GdkRectangle new_rect;
9379
9380       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9381
9382       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9383     }
9384   else
9385     {
9386       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9387     }
9388 }
9389
9390 static void
9391 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9392                                GtkTreePath        *path,
9393                                const GdkRectangle *clip_rect)
9394 {
9395   GtkRBTree *tree = NULL;
9396   GtkRBNode *node = NULL;
9397
9398   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9399
9400   if (tree)
9401     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9402 }
9403
9404 /* x and y are the mouse position
9405  */
9406 static void
9407 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9408                           cairo_t     *cr,
9409                           GtkRBTree   *tree,
9410                           GtkRBNode   *node,
9411                           /* in bin_window coordinates */
9412                           gint         x,
9413                           gint         y)
9414 {
9415   GdkRectangle area;
9416   GtkStateType state;
9417   GtkWidget *widget;
9418   gint x_offset = 0;
9419   gint x2;
9420   gint vertical_separator;
9421   gint expander_size;
9422   GtkExpanderStyle expander_style;
9423
9424   widget = GTK_WIDGET (tree_view);
9425
9426   gtk_widget_style_get (widget,
9427                         "vertical-separator", &vertical_separator,
9428                         NULL);
9429   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9430
9431   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9432     return;
9433
9434   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9435
9436   area.x = x_offset;
9437   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9438   area.width = expander_size + 2;
9439   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9440
9441   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9442     {
9443       state = GTK_STATE_INSENSITIVE;
9444     }
9445   else if (node == tree_view->priv->button_pressed_node)
9446     {
9447       if (x >= area.x && x <= (area.x + area.width) &&
9448           y >= area.y && y <= (area.y + area.height))
9449         state = GTK_STATE_ACTIVE;
9450       else
9451         state = GTK_STATE_NORMAL;
9452     }
9453   else
9454     {
9455       if (node == tree_view->priv->prelight_node &&
9456           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9457         state = GTK_STATE_PRELIGHT;
9458       else
9459         state = GTK_STATE_NORMAL;
9460     }
9461
9462   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9463     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9464   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9465     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9466   else if (node->children != NULL)
9467     expander_style = GTK_EXPANDER_EXPANDED;
9468   else
9469     expander_style = GTK_EXPANDER_COLLAPSED;
9470
9471   gtk_paint_expander (gtk_widget_get_style (widget),
9472                       cr,
9473                       state,
9474                       widget,
9475                       "treeview",
9476                       area.x + area.width / 2,
9477                       area.y + area.height / 2,
9478                       expander_style);
9479 }
9480
9481 static void
9482 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9483
9484 {
9485   GtkTreePath *cursor_path;
9486
9487   if ((tree_view->priv->tree == NULL) ||
9488       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9489     return;
9490
9491   cursor_path = NULL;
9492   if (tree_view->priv->cursor)
9493     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9494
9495   if (cursor_path == NULL)
9496     {
9497       /* Consult the selection before defaulting to the
9498        * first focusable element
9499        */
9500       GList *selected_rows;
9501       GtkTreeModel *model;
9502       GtkTreeSelection *selection;
9503
9504       selection = gtk_tree_view_get_selection (tree_view);
9505       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9506
9507       if (selected_rows)
9508         {
9509           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9510           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9511           g_list_free (selected_rows);
9512         }
9513       else
9514         {
9515           cursor_path = gtk_tree_path_new_first ();
9516           search_first_focusable_path (tree_view, &cursor_path,
9517                                        TRUE, NULL, NULL);
9518         }
9519
9520       gtk_tree_row_reference_free (tree_view->priv->cursor);
9521       tree_view->priv->cursor = NULL;
9522
9523       if (cursor_path)
9524         {
9525           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9526             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9527           else
9528             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9529         }
9530     }
9531
9532   if (cursor_path)
9533     {
9534       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9535
9536       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9537       gtk_tree_path_free (cursor_path);
9538
9539       if (tree_view->priv->focus_column == NULL)
9540         {
9541           GList *list;
9542           for (list = tree_view->priv->columns; list; list = list->next)
9543             {
9544               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9545                 {
9546                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9547                   break;
9548                 }
9549             }
9550         }
9551     }
9552 }
9553
9554 static void
9555 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9556                                    gint         count)
9557 {
9558   gint selection_count;
9559   GtkRBTree *cursor_tree = NULL;
9560   GtkRBNode *cursor_node = NULL;
9561   GtkRBTree *new_cursor_tree = NULL;
9562   GtkRBNode *new_cursor_node = NULL;
9563   GtkTreePath *cursor_path = NULL;
9564   gboolean grab_focus = TRUE;
9565   gboolean selectable;
9566
9567   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9568     return;
9569
9570   cursor_path = NULL;
9571   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9572     /* FIXME: we lost the cursor; should we get the first? */
9573     return;
9574
9575   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9576   _gtk_tree_view_find_node (tree_view, cursor_path,
9577                             &cursor_tree, &cursor_node);
9578
9579   if (cursor_tree == NULL)
9580     /* FIXME: we lost the cursor; should we get the first? */
9581     return;
9582
9583   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9584   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9585                                                       cursor_node,
9586                                                       cursor_path);
9587
9588   if (selection_count == 0
9589       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9590       && !tree_view->priv->ctrl_pressed
9591       && selectable)
9592     {
9593       /* Don't move the cursor, but just select the current node */
9594       new_cursor_tree = cursor_tree;
9595       new_cursor_node = cursor_node;
9596     }
9597   else
9598     {
9599       if (count == -1)
9600         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9601                                &new_cursor_tree, &new_cursor_node);
9602       else
9603         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9604                                &new_cursor_tree, &new_cursor_node);
9605     }
9606
9607   gtk_tree_path_free (cursor_path);
9608
9609   if (new_cursor_node)
9610     {
9611       cursor_path = _gtk_tree_view_find_path (tree_view,
9612                                               new_cursor_tree, new_cursor_node);
9613
9614       search_first_focusable_path (tree_view, &cursor_path,
9615                                    (count != -1),
9616                                    &new_cursor_tree,
9617                                    &new_cursor_node);
9618
9619       if (cursor_path)
9620         gtk_tree_path_free (cursor_path);
9621     }
9622
9623   /*
9624    * If the list has only one item and multi-selection is set then select
9625    * the row (if not yet selected).
9626    */
9627   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9628       new_cursor_node == NULL)
9629     {
9630       if (count == -1)
9631         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9632                                &new_cursor_tree, &new_cursor_node);
9633       else
9634         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9635                                &new_cursor_tree, &new_cursor_node);
9636
9637       if (new_cursor_node == NULL
9638           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9639         {
9640           new_cursor_node = cursor_node;
9641           new_cursor_tree = cursor_tree;
9642         }
9643       else
9644         {
9645           new_cursor_node = NULL;
9646         }
9647     }
9648
9649   if (new_cursor_node)
9650     {
9651       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9652       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9653       gtk_tree_path_free (cursor_path);
9654     }
9655   else
9656     {
9657       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9658
9659       if (!tree_view->priv->shift_pressed)
9660         {
9661           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9662                                           count < 0 ?
9663                                           GTK_DIR_UP : GTK_DIR_DOWN))
9664             {
9665               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9666
9667               if (toplevel)
9668                 gtk_widget_child_focus (toplevel,
9669                                         count < 0 ?
9670                                         GTK_DIR_TAB_BACKWARD :
9671                                         GTK_DIR_TAB_FORWARD);
9672
9673               grab_focus = FALSE;
9674             }
9675         }
9676       else
9677         {
9678           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9679         }
9680     }
9681
9682   if (grab_focus)
9683     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9684 }
9685
9686 static void
9687 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9688                                         gint         count)
9689 {
9690   GtkRBTree *cursor_tree = NULL;
9691   GtkRBNode *cursor_node = NULL;
9692   GtkTreePath *old_cursor_path = NULL;
9693   GtkTreePath *cursor_path = NULL;
9694   GtkRBTree *start_cursor_tree = NULL;
9695   GtkRBNode *start_cursor_node = NULL;
9696   gint y;
9697   gint window_y;
9698   gint vertical_separator;
9699
9700   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9701     return;
9702
9703   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9704     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9705   else
9706     /* This is sorta weird.  Focus in should give us a cursor */
9707     return;
9708
9709   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9710   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9711                             &cursor_tree, &cursor_node);
9712
9713   if (cursor_tree == NULL)
9714     {
9715       /* FIXME: we lost the cursor.  Should we try to get one? */
9716       gtk_tree_path_free (old_cursor_path);
9717       return;
9718     }
9719   g_return_if_fail (cursor_node != NULL);
9720
9721   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9722   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9723   y += tree_view->priv->cursor_offset;
9724   y += count * (int)tree_view->priv->vadjustment->page_increment;
9725   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9726
9727   if (y >= tree_view->priv->height)
9728     y = tree_view->priv->height - 1;
9729
9730   tree_view->priv->cursor_offset =
9731     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9732                              &cursor_tree, &cursor_node);
9733
9734   if (cursor_tree == NULL)
9735     {
9736       /* FIXME: we lost the cursor.  Should we try to get one? */
9737       gtk_tree_path_free (old_cursor_path);
9738       return;
9739     }
9740
9741   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9742     {
9743       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9744                              &cursor_tree, &cursor_node);
9745       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9746     }
9747
9748   y -= tree_view->priv->cursor_offset;
9749   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9750
9751   start_cursor_tree = cursor_tree;
9752   start_cursor_node = cursor_node;
9753
9754   if (! search_first_focusable_path (tree_view, &cursor_path,
9755                                      (count != -1),
9756                                      &cursor_tree, &cursor_node))
9757     {
9758       /* It looks like we reached the end of the view without finding
9759        * a focusable row.  We will step backwards to find the last
9760        * focusable row.
9761        */
9762       cursor_tree = start_cursor_tree;
9763       cursor_node = start_cursor_node;
9764       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9765
9766       search_first_focusable_path (tree_view, &cursor_path,
9767                                    (count == -1),
9768                                    &cursor_tree, &cursor_node);
9769     }
9770
9771   if (!cursor_path)
9772     goto cleanup;
9773
9774   /* update y */
9775   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9776
9777   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9778
9779   y -= window_y;
9780   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9781   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9782   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9783
9784   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9785     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9786
9787   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9788
9789 cleanup:
9790   gtk_tree_path_free (old_cursor_path);
9791   gtk_tree_path_free (cursor_path);
9792 }
9793
9794 static void
9795 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9796                                       gint         count)
9797 {
9798   GtkRBTree *cursor_tree = NULL;
9799   GtkRBNode *cursor_node = NULL;
9800   GtkTreePath *cursor_path = NULL;
9801   GtkTreeViewColumn *column;
9802   GtkTreeIter iter;
9803   GList *list;
9804   gboolean found_column = FALSE;
9805   gboolean rtl;
9806
9807   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9808
9809   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9810     return;
9811
9812   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9813     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9814   else
9815     return;
9816
9817   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9818   if (cursor_tree == NULL)
9819     return;
9820   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9821     {
9822       gtk_tree_path_free (cursor_path);
9823       return;
9824     }
9825   gtk_tree_path_free (cursor_path);
9826
9827   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9828   if (tree_view->priv->focus_column)
9829     {
9830       for (; list; list = (rtl ? list->prev : list->next))
9831         {
9832           if (list->data == tree_view->priv->focus_column)
9833             break;
9834         }
9835     }
9836
9837   while (list)
9838     {
9839       gboolean left, right;
9840
9841       column = list->data;
9842       if (column->visible == FALSE)
9843         goto loop_end;
9844
9845       gtk_tree_view_column_cell_set_cell_data (column,
9846                                                tree_view->priv->model,
9847                                                &iter,
9848                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9849                                                cursor_node->children?TRUE:FALSE);
9850
9851       if (rtl)
9852         {
9853           right = list->prev ? TRUE : FALSE;
9854           left = list->next ? TRUE : FALSE;
9855         }
9856       else
9857         {
9858           left = list->prev ? TRUE : FALSE;
9859           right = list->next ? TRUE : FALSE;
9860         }
9861
9862       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9863         {
9864           tree_view->priv->focus_column = column;
9865           found_column = TRUE;
9866           break;
9867         }
9868     loop_end:
9869       if (count == 1)
9870         list = rtl ? list->prev : list->next;
9871       else
9872         list = rtl ? list->next : list->prev;
9873     }
9874
9875   if (found_column)
9876     {
9877       if (!gtk_tree_view_has_special_cell (tree_view))
9878         _gtk_tree_view_queue_draw_node (tree_view,
9879                                         cursor_tree,
9880                                         cursor_node,
9881                                         NULL);
9882       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9883       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9884     }
9885   else
9886     {
9887       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9888     }
9889
9890   gtk_tree_view_clamp_column_visible (tree_view,
9891                                       tree_view->priv->focus_column, TRUE);
9892 }
9893
9894 static void
9895 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9896                                      gint         count)
9897 {
9898   GtkRBTree *cursor_tree;
9899   GtkRBNode *cursor_node;
9900   GtkTreePath *path;
9901   GtkTreePath *old_path;
9902
9903   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9904     return;
9905
9906   g_return_if_fail (tree_view->priv->tree != NULL);
9907
9908   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9909
9910   cursor_tree = tree_view->priv->tree;
9911   cursor_node = cursor_tree->root;
9912
9913   if (count == -1)
9914     {
9915       while (cursor_node && cursor_node->left != cursor_tree->nil)
9916         cursor_node = cursor_node->left;
9917
9918       /* Now go forward to find the first focusable row. */
9919       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9920       search_first_focusable_path (tree_view, &path,
9921                                    TRUE, &cursor_tree, &cursor_node);
9922     }
9923   else
9924     {
9925       do
9926         {
9927           while (cursor_node && cursor_node->right != cursor_tree->nil)
9928             cursor_node = cursor_node->right;
9929           if (cursor_node->children == NULL)
9930             break;
9931
9932           cursor_tree = cursor_node->children;
9933           cursor_node = cursor_tree->root;
9934         }
9935       while (1);
9936
9937       /* Now go backwards to find last focusable row. */
9938       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9939       search_first_focusable_path (tree_view, &path,
9940                                    FALSE, &cursor_tree, &cursor_node);
9941     }
9942
9943   if (!path)
9944     goto cleanup;
9945
9946   if (gtk_tree_path_compare (old_path, path))
9947     {
9948       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9949       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9950     }
9951   else
9952     {
9953       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9954     }
9955
9956 cleanup:
9957   gtk_tree_path_free (old_path);
9958   gtk_tree_path_free (path);
9959 }
9960
9961 static gboolean
9962 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
9963 {
9964   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9965     return FALSE;
9966
9967   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9968     return FALSE;
9969
9970   gtk_tree_selection_select_all (tree_view->priv->selection);
9971
9972   return TRUE;
9973 }
9974
9975 static gboolean
9976 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
9977 {
9978   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9979     return FALSE;
9980
9981   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9982     return FALSE;
9983
9984   gtk_tree_selection_unselect_all (tree_view->priv->selection);
9985
9986   return TRUE;
9987 }
9988
9989 static gboolean
9990 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
9991                                       gboolean     start_editing)
9992 {
9993   GtkRBTree *new_tree = NULL;
9994   GtkRBNode *new_node = NULL;
9995   GtkRBTree *cursor_tree = NULL;
9996   GtkRBNode *cursor_node = NULL;
9997   GtkTreePath *cursor_path = NULL;
9998   GtkTreeSelectMode mode = 0;
9999
10000   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10001     return FALSE;
10002
10003   if (tree_view->priv->cursor)
10004     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10005
10006   if (cursor_path == NULL)
10007     return FALSE;
10008
10009   _gtk_tree_view_find_node (tree_view, cursor_path,
10010                             &cursor_tree, &cursor_node);
10011
10012   if (cursor_tree == NULL)
10013     {
10014       gtk_tree_path_free (cursor_path);
10015       return FALSE;
10016     }
10017
10018   if (!tree_view->priv->shift_pressed && start_editing &&
10019       tree_view->priv->focus_column)
10020     {
10021       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10022         {
10023           gtk_tree_path_free (cursor_path);
10024           return TRUE;
10025         }
10026     }
10027
10028   if (tree_view->priv->ctrl_pressed)
10029     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10030   if (tree_view->priv->shift_pressed)
10031     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10032
10033   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10034                                             cursor_node,
10035                                             cursor_tree,
10036                                             cursor_path,
10037                                             mode,
10038                                             FALSE);
10039
10040   /* We bail out if the original (tree, node) don't exist anymore after
10041    * handling the selection-changed callback.  We do return TRUE because
10042    * the key press has been handled at this point.
10043    */
10044   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10045
10046   if (cursor_tree != new_tree || cursor_node != new_node)
10047     return FALSE;
10048
10049   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10050
10051   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10052   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10053
10054   if (!tree_view->priv->shift_pressed)
10055     gtk_tree_view_row_activated (tree_view, cursor_path,
10056                                  tree_view->priv->focus_column);
10057
10058   gtk_tree_path_free (cursor_path);
10059
10060   return TRUE;
10061 }
10062
10063 static gboolean
10064 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10065 {
10066   GtkRBTree *new_tree = NULL;
10067   GtkRBNode *new_node = NULL;
10068   GtkRBTree *cursor_tree = NULL;
10069   GtkRBNode *cursor_node = NULL;
10070   GtkTreePath *cursor_path = NULL;
10071
10072   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10073     return FALSE;
10074
10075   cursor_path = NULL;
10076   if (tree_view->priv->cursor)
10077     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10078
10079   if (cursor_path == NULL)
10080     return FALSE;
10081
10082   _gtk_tree_view_find_node (tree_view, cursor_path,
10083                             &cursor_tree, &cursor_node);
10084   if (cursor_tree == NULL)
10085     {
10086       gtk_tree_path_free (cursor_path);
10087       return FALSE;
10088     }
10089
10090   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10091                                             cursor_node,
10092                                             cursor_tree,
10093                                             cursor_path,
10094                                             GTK_TREE_SELECT_MODE_TOGGLE,
10095                                             FALSE);
10096
10097   /* We bail out if the original (tree, node) don't exist anymore after
10098    * handling the selection-changed callback.  We do return TRUE because
10099    * the key press has been handled at this point.
10100    */
10101   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10102
10103   if (cursor_tree != new_tree || cursor_node != new_node)
10104     return FALSE;
10105
10106   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10107
10108   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10109   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10110   gtk_tree_path_free (cursor_path);
10111
10112   return TRUE;
10113 }
10114
10115 static gboolean
10116 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10117                                                gboolean     logical,
10118                                                gboolean     expand,
10119                                                gboolean     open_all)
10120 {
10121   GtkTreePath *cursor_path = NULL;
10122   GtkRBTree *tree;
10123   GtkRBNode *node;
10124
10125   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10126     return FALSE;
10127
10128   cursor_path = NULL;
10129   if (tree_view->priv->cursor)
10130     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10131
10132   if (cursor_path == NULL)
10133     return FALSE;
10134
10135   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10136     return FALSE;
10137
10138   /* Don't handle the event if we aren't an expander */
10139   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10140     return FALSE;
10141
10142   if (!logical
10143       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10144     expand = !expand;
10145
10146   if (expand)
10147     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10148   else
10149     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10150
10151   gtk_tree_path_free (cursor_path);
10152
10153   return TRUE;
10154 }
10155
10156 static gboolean
10157 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10158 {
10159   GtkRBTree *cursor_tree = NULL;
10160   GtkRBNode *cursor_node = NULL;
10161   GtkTreePath *cursor_path = NULL;
10162   GdkModifierType state;
10163
10164   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10165     goto out;
10166
10167   cursor_path = NULL;
10168   if (tree_view->priv->cursor)
10169     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10170
10171   if (cursor_path == NULL)
10172     goto out;
10173
10174   _gtk_tree_view_find_node (tree_view, cursor_path,
10175                             &cursor_tree, &cursor_node);
10176   if (cursor_tree == NULL)
10177     {
10178       gtk_tree_path_free (cursor_path);
10179       goto out;
10180     }
10181
10182   if (cursor_tree->parent_node)
10183     {
10184       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10185       cursor_node = cursor_tree->parent_node;
10186       cursor_tree = cursor_tree->parent_tree;
10187
10188       gtk_tree_path_up (cursor_path);
10189
10190       if (gtk_get_current_event_state (&state))
10191         {
10192           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10193             tree_view->priv->ctrl_pressed = TRUE;
10194         }
10195
10196       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10197       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10198
10199       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10200       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10201       gtk_tree_path_free (cursor_path);
10202
10203       tree_view->priv->ctrl_pressed = FALSE;
10204
10205       return TRUE;
10206     }
10207
10208  out:
10209
10210   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10211   return FALSE;
10212 }
10213
10214 static gboolean
10215 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10216 {
10217   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10218   tree_view->priv->typeselect_flush_timeout = 0;
10219
10220   return FALSE;
10221 }
10222
10223 /* Cut and paste from gtkwindow.c */
10224 static void
10225 send_focus_change (GtkWidget *widget,
10226                    GdkDevice *device,
10227                    gboolean   in)
10228 {
10229   GdkDeviceManager *device_manager;
10230   GList *devices, *d;
10231
10232   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10233   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10234   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10235   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10236
10237   for (d = devices; d; d = d->next)
10238     {
10239       GdkDevice *dev = d->data;
10240       GdkEvent *fevent;
10241       GdkWindow *window;
10242
10243       if (dev->source != GDK_SOURCE_KEYBOARD)
10244         continue;
10245
10246       window = gtk_widget_get_window (widget);
10247
10248       /* Skip non-master keyboards that haven't
10249        * selected for events from this window
10250        */
10251       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10252           !gdk_window_get_device_events (window, dev))
10253         continue;
10254
10255       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10256
10257       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10258       fevent->focus_change.window = g_object_ref (window);
10259       fevent->focus_change.in = in;
10260       gdk_event_set_device (fevent, device);
10261
10262       gtk_widget_send_focus_change (widget, fevent);
10263
10264       gdk_event_free (fevent);
10265     }
10266 }
10267
10268 static void
10269 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10270 {
10271   GtkWidget *frame, *vbox, *toplevel;
10272   GdkScreen *screen;
10273
10274   if (tree_view->priv->search_custom_entry_set)
10275     return;
10276
10277   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10278   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10279
10280    if (tree_view->priv->search_window != NULL)
10281      {
10282        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10283          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10284                                       GTK_WINDOW (tree_view->priv->search_window));
10285        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10286          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10287                                          GTK_WINDOW (tree_view->priv->search_window));
10288
10289        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10290
10291        return;
10292      }
10293
10294   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10295   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10296
10297   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10298     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10299                                  GTK_WINDOW (tree_view->priv->search_window));
10300
10301   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10302                             GDK_WINDOW_TYPE_HINT_UTILITY);
10303   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10304   g_signal_connect (tree_view->priv->search_window, "delete-event",
10305                     G_CALLBACK (gtk_tree_view_search_delete_event),
10306                     tree_view);
10307   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10308                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10309                     tree_view);
10310   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10311                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10312                     tree_view);
10313   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10314                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10315                     tree_view);
10316
10317   frame = gtk_frame_new (NULL);
10318   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10319   gtk_widget_show (frame);
10320   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10321
10322   vbox = gtk_vbox_new (FALSE, 0);
10323   gtk_widget_show (vbox);
10324   gtk_container_add (GTK_CONTAINER (frame), vbox);
10325   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10326
10327   /* add entry */
10328   tree_view->priv->search_entry = gtk_entry_new ();
10329   gtk_widget_show (tree_view->priv->search_entry);
10330   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10331                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10332                     tree_view);
10333   g_signal_connect (tree_view->priv->search_entry,
10334                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10335                     tree_view);
10336   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10337                     "preedit-changed",
10338                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10339                     tree_view);
10340   gtk_container_add (GTK_CONTAINER (vbox),
10341                      tree_view->priv->search_entry);
10342
10343   gtk_widget_realize (tree_view->priv->search_entry);
10344 }
10345
10346 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10347  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10348  */
10349 static gboolean
10350 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10351                                              GdkDevice   *device,
10352                                              gboolean     keybinding)
10353 {
10354   /* We only start interactive search if we have focus or the columns
10355    * have focus.  If one of our children have focus, we don't want to
10356    * start the search.
10357    */
10358   GList *list;
10359   gboolean found_focus = FALSE;
10360   GtkWidgetClass *entry_parent_class;
10361
10362   if (!tree_view->priv->enable_search && !keybinding)
10363     return FALSE;
10364
10365   if (tree_view->priv->search_custom_entry_set)
10366     return FALSE;
10367
10368   if (tree_view->priv->search_window != NULL &&
10369       gtk_widget_get_visible (tree_view->priv->search_window))
10370     return TRUE;
10371
10372   for (list = tree_view->priv->columns; list; list = list->next)
10373     {
10374       GtkTreeViewColumn *column;
10375
10376       column = list->data;
10377       if (! column->visible)
10378         continue;
10379
10380       if (gtk_widget_has_focus (column->button))
10381         {
10382           found_focus = TRUE;
10383           break;
10384         }
10385     }
10386
10387   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10388     found_focus = TRUE;
10389
10390   if (!found_focus)
10391     return FALSE;
10392
10393   if (tree_view->priv->search_column < 0)
10394     return FALSE;
10395
10396   gtk_tree_view_ensure_interactive_directory (tree_view);
10397
10398   if (keybinding)
10399     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10400
10401   /* done, show it */
10402   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10403   gtk_widget_show (tree_view->priv->search_window);
10404   if (tree_view->priv->search_entry_changed_id == 0)
10405     {
10406       tree_view->priv->search_entry_changed_id =
10407         g_signal_connect (tree_view->priv->search_entry, "changed",
10408                           G_CALLBACK (gtk_tree_view_search_init),
10409                           tree_view);
10410     }
10411
10412   tree_view->priv->typeselect_flush_timeout =
10413     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10414                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10415                    tree_view);
10416
10417   /* Grab focus will select all the text.  We don't want that to happen, so we
10418    * call the parent instance and bypass the selection change.  This is probably
10419    * really non-kosher. */
10420   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10421   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10422
10423   /* send focus-in event */
10424   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10425
10426   /* search first matching iter */
10427   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10428
10429   return TRUE;
10430 }
10431
10432 static gboolean
10433 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10434 {
10435   return gtk_tree_view_real_start_interactive_search (tree_view,
10436                                                       gtk_get_current_event_device (),
10437                                                       TRUE);
10438 }
10439
10440 /* this function returns the new width of the column being resized given
10441  * the column and x position of the cursor; the x cursor position is passed
10442  * in as a pointer and automagicly corrected if it's beyond min/max limits
10443  */
10444 static gint
10445 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10446                                 gint       i,
10447                                 gint      *x)
10448 {
10449   GtkAllocation allocation;
10450   GtkTreeViewColumn *column;
10451   GtkRequisition button_req;
10452   gint width;
10453   gboolean rtl;
10454
10455   /* first translate the x position from widget->window
10456    * to clist->clist_window
10457    */
10458   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10459   column = g_list_nth (tree_view->priv->columns, i)->data;
10460   gtk_widget_get_allocation (column->button, &allocation);
10461   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10462
10463   /* Clamp down the value */
10464   if (column->min_width == -1)
10465     {
10466       gtk_widget_get_preferred_size (column->button, &button_req, NULL);
10467       width = MAX (button_req.width, width);
10468     }
10469   else
10470     width = MAX (column->min_width,
10471                  width);
10472   if (column->max_width != -1)
10473     width = MIN (width, column->max_width);
10474
10475   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10476
10477   return width;
10478 }
10479
10480
10481 /* FIXME this adjust_allocation is a big cut-and-paste from
10482  * GtkCList, needs to be some "official" way to do this
10483  * factored out.
10484  */
10485 typedef struct
10486 {
10487   GdkWindow *window;
10488   int dx;
10489   int dy;
10490 } ScrollData;
10491
10492 /* The window to which widget->window is relative */
10493 #define ALLOCATION_WINDOW(widget)               \
10494    (!gtk_widget_get_has_window (widget) ?                   \
10495     gtk_widget_get_window (widget) :                        \
10496     gdk_window_get_parent (gtk_widget_get_window (widget)))
10497
10498 static void
10499 adjust_allocation_recurse (GtkWidget *widget,
10500                            gpointer   data)
10501 {
10502   GtkAllocation allocation;
10503   ScrollData *scroll_data = data;
10504
10505   /* Need to really size allocate instead of just poking
10506    * into widget->allocation if the widget is not realized.
10507    * FIXME someone figure out why this was.
10508    */
10509   gtk_widget_get_allocation (widget, &allocation);
10510   if (!gtk_widget_get_realized (widget))
10511     {
10512       if (gtk_widget_get_visible (widget))
10513         {
10514           GdkRectangle tmp_rectangle = allocation;
10515           tmp_rectangle.x += scroll_data->dx;
10516           tmp_rectangle.y += scroll_data->dy;
10517
10518           gtk_widget_size_allocate (widget, &tmp_rectangle);
10519         }
10520     }
10521   else
10522     {
10523       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10524         {
10525           allocation.x += scroll_data->dx;
10526           allocation.y += scroll_data->dy;
10527           gtk_widget_set_allocation (widget, &allocation);
10528
10529           if (GTK_IS_CONTAINER (widget))
10530             gtk_container_forall (GTK_CONTAINER (widget),
10531                                   adjust_allocation_recurse,
10532                                   data);
10533         }
10534     }
10535 }
10536
10537 static void
10538 adjust_allocation (GtkWidget *widget,
10539                    int        dx,
10540                    int        dy)
10541 {
10542   ScrollData scroll_data;
10543
10544   if (gtk_widget_get_realized (widget))
10545     scroll_data.window = ALLOCATION_WINDOW (widget);
10546   else
10547     scroll_data.window = NULL;
10548
10549   scroll_data.dx = dx;
10550   scroll_data.dy = dy;
10551
10552   adjust_allocation_recurse (widget, &scroll_data);
10553 }
10554
10555 /* Callbacks */
10556 static void
10557 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10558                                   GtkTreeView   *tree_view)
10559 {
10560   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10561     {
10562       gint dy;
10563
10564       gdk_window_move (tree_view->priv->bin_window,
10565                        - tree_view->priv->hadjustment->value,
10566                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10567       gdk_window_move (tree_view->priv->header_window,
10568                        - tree_view->priv->hadjustment->value,
10569                        0);
10570       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10571       if (dy)
10572         {
10573           update_prelight (tree_view,
10574                            tree_view->priv->event_last_x,
10575                            tree_view->priv->event_last_y - dy);
10576
10577           if (tree_view->priv->edited_column &&
10578               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10579             {
10580               GList *list;
10581               GtkWidget *widget;
10582               GtkTreeViewChild *child = NULL;
10583
10584               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10585               adjust_allocation (widget, 0, dy);
10586
10587               for (list = tree_view->priv->children; list; list = list->next)
10588                 {
10589                   child = (GtkTreeViewChild *)list->data;
10590                   if (child->widget == widget)
10591                     {
10592                       child->y += dy;
10593                       break;
10594                     }
10595                 }
10596             }
10597         }
10598       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10599
10600       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10601         {
10602           /* update our dy and top_row */
10603           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10604
10605           if (!tree_view->priv->in_top_row_to_dy)
10606             gtk_tree_view_dy_to_top_row (tree_view);
10607         }
10608
10609       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10610       gtk_tree_view_bin_process_updates (tree_view);
10611     }
10612 }
10613
10614 \f
10615
10616 /* Public methods
10617  */
10618
10619 /**
10620  * gtk_tree_view_new:
10621  *
10622  * Creates a new #GtkTreeView widget.
10623  *
10624  * Return value: A newly created #GtkTreeView widget.
10625  **/
10626 GtkWidget *
10627 gtk_tree_view_new (void)
10628 {
10629   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10630 }
10631
10632 /**
10633  * gtk_tree_view_new_with_model:
10634  * @model: the model.
10635  *
10636  * Creates a new #GtkTreeView widget with the model initialized to @model.
10637  *
10638  * Return value: A newly created #GtkTreeView widget.
10639  **/
10640 GtkWidget *
10641 gtk_tree_view_new_with_model (GtkTreeModel *model)
10642 {
10643   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10644 }
10645
10646 /* Public Accessors
10647  */
10648
10649 /**
10650  * gtk_tree_view_get_model:
10651  * @tree_view: a #GtkTreeView
10652  *
10653  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10654  * model is unset.
10655  *
10656  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10657  **/
10658 GtkTreeModel *
10659 gtk_tree_view_get_model (GtkTreeView *tree_view)
10660 {
10661   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10662
10663   return tree_view->priv->model;
10664 }
10665
10666 /**
10667  * gtk_tree_view_set_model:
10668  * @tree_view: A #GtkTreeNode.
10669  * @model: (allow-none): The model.
10670  *
10671  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10672  * set, it will remove it before setting the new model.  If @model is %NULL,
10673  * then it will unset the old model.
10674  **/
10675 void
10676 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10677                          GtkTreeModel *model)
10678 {
10679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10680   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10681
10682   if (model == tree_view->priv->model)
10683     return;
10684
10685   if (tree_view->priv->scroll_to_path)
10686     {
10687       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10688       tree_view->priv->scroll_to_path = NULL;
10689     }
10690
10691   if (tree_view->priv->model)
10692     {
10693       GList *tmplist = tree_view->priv->columns;
10694
10695       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10696       gtk_tree_view_stop_editing (tree_view, TRUE);
10697
10698       remove_expand_collapse_timeout (tree_view);
10699
10700       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10701                                             gtk_tree_view_row_changed,
10702                                             tree_view);
10703       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10704                                             gtk_tree_view_row_inserted,
10705                                             tree_view);
10706       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10707                                             gtk_tree_view_row_has_child_toggled,
10708                                             tree_view);
10709       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10710                                             gtk_tree_view_row_deleted,
10711                                             tree_view);
10712       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10713                                             gtk_tree_view_rows_reordered,
10714                                             tree_view);
10715
10716       for (; tmplist; tmplist = tmplist->next)
10717         _gtk_tree_view_column_unset_model (tmplist->data,
10718                                            tree_view->priv->model);
10719
10720       if (tree_view->priv->tree)
10721         gtk_tree_view_free_rbtree (tree_view);
10722
10723       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10724       tree_view->priv->drag_dest_row = NULL;
10725       gtk_tree_row_reference_free (tree_view->priv->cursor);
10726       tree_view->priv->cursor = NULL;
10727       gtk_tree_row_reference_free (tree_view->priv->anchor);
10728       tree_view->priv->anchor = NULL;
10729       gtk_tree_row_reference_free (tree_view->priv->top_row);
10730       tree_view->priv->top_row = NULL;
10731       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10732       tree_view->priv->scroll_to_path = NULL;
10733
10734       tree_view->priv->scroll_to_column = NULL;
10735
10736       g_object_unref (tree_view->priv->model);
10737
10738       tree_view->priv->search_column = -1;
10739       tree_view->priv->fixed_height_check = 0;
10740       tree_view->priv->fixed_height = -1;
10741       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10742       tree_view->priv->last_button_x = -1;
10743       tree_view->priv->last_button_y = -1;
10744     }
10745
10746   tree_view->priv->model = model;
10747
10748   if (tree_view->priv->model)
10749     {
10750       gint i;
10751       GtkTreePath *path;
10752       GtkTreeIter iter;
10753       GtkTreeModelFlags flags;
10754
10755       if (tree_view->priv->search_column == -1)
10756         {
10757           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10758             {
10759               GType type = gtk_tree_model_get_column_type (model, i);
10760
10761               if (g_value_type_transformable (type, G_TYPE_STRING))
10762                 {
10763                   tree_view->priv->search_column = i;
10764                   break;
10765                 }
10766             }
10767         }
10768
10769       g_object_ref (tree_view->priv->model);
10770       g_signal_connect (tree_view->priv->model,
10771                         "row-changed",
10772                         G_CALLBACK (gtk_tree_view_row_changed),
10773                         tree_view);
10774       g_signal_connect (tree_view->priv->model,
10775                         "row-inserted",
10776                         G_CALLBACK (gtk_tree_view_row_inserted),
10777                         tree_view);
10778       g_signal_connect (tree_view->priv->model,
10779                         "row-has-child-toggled",
10780                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10781                         tree_view);
10782       g_signal_connect (tree_view->priv->model,
10783                         "row-deleted",
10784                         G_CALLBACK (gtk_tree_view_row_deleted),
10785                         tree_view);
10786       g_signal_connect (tree_view->priv->model,
10787                         "rows-reordered",
10788                         G_CALLBACK (gtk_tree_view_rows_reordered),
10789                         tree_view);
10790
10791       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10792       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10793         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10794       else
10795         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10796
10797       path = gtk_tree_path_new_first ();
10798       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10799         {
10800           tree_view->priv->tree = _gtk_rbtree_new ();
10801           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10802         }
10803       gtk_tree_path_free (path);
10804
10805       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10806       install_presize_handler (tree_view);
10807     }
10808
10809   g_object_notify (G_OBJECT (tree_view), "model");
10810
10811   if (tree_view->priv->selection)
10812   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10813
10814   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10815     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10816 }
10817
10818 /**
10819  * gtk_tree_view_get_selection:
10820  * @tree_view: A #GtkTreeView.
10821  *
10822  * Gets the #GtkTreeSelection associated with @tree_view.
10823  *
10824  * Return value: (transfer none): A #GtkTreeSelection object.
10825  **/
10826 GtkTreeSelection *
10827 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10828 {
10829   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10830
10831   return tree_view->priv->selection;
10832 }
10833
10834 /**
10835  * gtk_tree_view_get_hadjustment:
10836  * @tree_view: A #GtkTreeView
10837  *
10838  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10839  *
10840  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10841  *     if none is currently being used.
10842  *
10843  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
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   return tree_view->priv->hadjustment;
10851 }
10852
10853 /**
10854  * gtk_tree_view_set_hadjustment:
10855  * @tree_view: A #GtkTreeView
10856  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10857  *
10858  * Sets the #GtkAdjustment for the current horizontal aspect.
10859  *
10860  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
10861  **/
10862 void
10863 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10864                                GtkAdjustment *adjustment)
10865 {
10866   GtkTreeViewPrivate *priv = tree_view->priv;
10867
10868   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10869   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
10870
10871   if (adjustment && priv->hadjustment == adjustment)
10872     return;
10873
10874   if (priv->hadjustment != NULL)
10875     {
10876       g_signal_handlers_disconnect_by_func (priv->hadjustment,
10877                                             gtk_tree_view_adjustment_changed,
10878                                             tree_view);
10879       g_object_unref (priv->hadjustment);
10880     }
10881
10882   if (adjustment == NULL)
10883     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
10884                                      0.0, 0.0, 0.0);
10885
10886   g_signal_connect (adjustment, "value-changed",
10887                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
10888   priv->hadjustment = g_object_ref_sink (adjustment);
10889   /* FIXME: Adjustment should probably be populated here with fresh values, but
10890    * internal details are too complicated for me to decipher right now.
10891    */
10892   gtk_tree_view_adjustment_changed (NULL, tree_view);
10893
10894   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10895 }
10896
10897 /**
10898  * gtk_tree_view_get_vadjustment:
10899  * @tree_view: A #GtkTreeView
10900  *
10901  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10902  *
10903  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10904  *     if none is currently being used.
10905  *
10906  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
10907  **/
10908 GtkAdjustment *
10909 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10910 {
10911   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10912
10913   return tree_view->priv->vadjustment;
10914 }
10915
10916 /**
10917  * gtk_tree_view_set_vadjustment:
10918  * @tree_view: A #GtkTreeView
10919  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10920  *
10921  * Sets the #GtkAdjustment for the current vertical aspect.
10922  *
10923  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
10924  **/
10925 void
10926 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10927                                GtkAdjustment *adjustment)
10928 {
10929   GtkTreeViewPrivate *priv = tree_view->priv;
10930
10931   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10932   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
10933
10934   if (adjustment && priv->vadjustment == adjustment)
10935     return;
10936
10937   if (priv->vadjustment != NULL)
10938     {
10939       g_signal_handlers_disconnect_by_func (priv->vadjustment,
10940                                             gtk_tree_view_adjustment_changed,
10941                                             tree_view);
10942       g_object_unref (priv->vadjustment);
10943     }
10944
10945   if (adjustment == NULL)
10946     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
10947                                      0.0, 0.0, 0.0);
10948
10949   g_signal_connect (adjustment, "value-changed",
10950                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
10951   priv->vadjustment = g_object_ref_sink (adjustment);
10952   /* FIXME: Adjustment should probably be populated here with fresh values, but
10953    * internal details are too complicated for me to decipher right now.
10954    */
10955   gtk_tree_view_adjustment_changed (NULL, tree_view);
10956   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10957 }
10958
10959 /* Column and header operations */
10960
10961 /**
10962  * gtk_tree_view_get_headers_visible:
10963  * @tree_view: A #GtkTreeView.
10964  *
10965  * Returns %TRUE if the headers on the @tree_view are visible.
10966  *
10967  * Return value: Whether the headers are visible or not.
10968  **/
10969 gboolean
10970 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10971 {
10972   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10973
10974   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10975 }
10976
10977 /**
10978  * gtk_tree_view_set_headers_visible:
10979  * @tree_view: A #GtkTreeView.
10980  * @headers_visible: %TRUE if the headers are visible
10981  *
10982  * Sets the visibility state of the headers.
10983  **/
10984 void
10985 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10986                                    gboolean     headers_visible)
10987 {
10988   gint x, y;
10989   GList *list;
10990   GtkTreeViewColumn *column;
10991   GtkAllocation allocation;
10992
10993   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10994
10995   headers_visible = !! headers_visible;
10996
10997   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10998     return;
10999
11000   if (headers_visible)
11001     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11002   else
11003     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11004
11005   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11006     {
11007       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11008       if (headers_visible)
11009         {
11010           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11011           gdk_window_move_resize (tree_view->priv->bin_window,
11012                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11013                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11014
11015           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11016             gtk_tree_view_map_buttons (tree_view);
11017         }
11018       else
11019         {
11020           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11021
11022           for (list = tree_view->priv->columns; list; list = list->next)
11023             {
11024               column = list->data;
11025               gtk_widget_unmap (column->button);
11026             }
11027           gdk_window_hide (tree_view->priv->header_window);
11028         }
11029     }
11030
11031   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11032   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11033   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11034   tree_view->priv->vadjustment->lower = 0;
11035   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11036   gtk_adjustment_changed (tree_view->priv->vadjustment);
11037
11038   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11039
11040   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11041 }
11042
11043 /**
11044  * gtk_tree_view_columns_autosize:
11045  * @tree_view: A #GtkTreeView.
11046  *
11047  * Resizes all columns to their optimal width. Only works after the
11048  * treeview has been realized.
11049  **/
11050 void
11051 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11052 {
11053   gboolean dirty = FALSE;
11054   GList *list;
11055   GtkTreeViewColumn *column;
11056
11057   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11058
11059   for (list = tree_view->priv->columns; list; list = list->next)
11060     {
11061       column = list->data;
11062       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11063         continue;
11064       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11065       dirty = TRUE;
11066     }
11067
11068   if (dirty)
11069     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11070 }
11071
11072 /**
11073  * gtk_tree_view_set_headers_clickable:
11074  * @tree_view: A #GtkTreeView.
11075  * @setting: %TRUE if the columns are clickable.
11076  *
11077  * Allow the column title buttons to be clicked.
11078  **/
11079 void
11080 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11081                                      gboolean   setting)
11082 {
11083   GList *list;
11084
11085   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11086
11087   for (list = tree_view->priv->columns; list; list = list->next)
11088     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11089
11090   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11091 }
11092
11093
11094 /**
11095  * gtk_tree_view_get_headers_clickable:
11096  * @tree_view: A #GtkTreeView.
11097  *
11098  * Returns whether all header columns are clickable.
11099  *
11100  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11101  *
11102  * Since: 2.10
11103  **/
11104 gboolean
11105 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11106 {
11107   GList *list;
11108
11109   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11110
11111   for (list = tree_view->priv->columns; list; list = list->next)
11112     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11113       return FALSE;
11114
11115   return TRUE;
11116 }
11117
11118 /**
11119  * gtk_tree_view_set_rules_hint
11120  * @tree_view: a #GtkTreeView
11121  * @setting: %TRUE if the tree requires reading across rows
11122  *
11123  * This function tells GTK+ that the user interface for your
11124  * application requires users to read across tree rows and associate
11125  * cells with one another. By default, GTK+ will then render the tree
11126  * with alternating row colors. Do <emphasis>not</emphasis> use it
11127  * just because you prefer the appearance of the ruled tree; that's a
11128  * question for the theme. Some themes will draw tree rows in
11129  * alternating colors even when rules are turned off, and users who
11130  * prefer that appearance all the time can choose those themes. You
11131  * should call this function only as a <emphasis>semantic</emphasis>
11132  * hint to the theme engine that your tree makes alternating colors
11133  * useful from a functional standpoint (since it has lots of columns,
11134  * generally).
11135  *
11136  **/
11137 void
11138 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11139                               gboolean      setting)
11140 {
11141   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11142
11143   setting = setting != FALSE;
11144
11145   if (tree_view->priv->has_rules != setting)
11146     {
11147       tree_view->priv->has_rules = setting;
11148       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11149     }
11150
11151   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11152 }
11153
11154 /**
11155  * gtk_tree_view_get_rules_hint
11156  * @tree_view: a #GtkTreeView
11157  *
11158  * Gets the setting set by gtk_tree_view_set_rules_hint().
11159  *
11160  * Return value: %TRUE if rules are useful for the user of this tree
11161  **/
11162 gboolean
11163 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11164 {
11165   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11166
11167   return tree_view->priv->has_rules;
11168 }
11169
11170 /* Public Column functions
11171  */
11172
11173 /**
11174  * gtk_tree_view_append_column:
11175  * @tree_view: A #GtkTreeView.
11176  * @column: The #GtkTreeViewColumn to add.
11177  *
11178  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11179  * mode enabled, then @column must have its "sizing" property set to be
11180  * GTK_TREE_VIEW_COLUMN_FIXED.
11181  *
11182  * Return value: The number of columns in @tree_view after appending.
11183  **/
11184 gint
11185 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11186                              GtkTreeViewColumn *column)
11187 {
11188   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11189   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11190   g_return_val_if_fail (column->tree_view == NULL, -1);
11191
11192   return gtk_tree_view_insert_column (tree_view, column, -1);
11193 }
11194
11195
11196 /**
11197  * gtk_tree_view_remove_column:
11198  * @tree_view: A #GtkTreeView.
11199  * @column: The #GtkTreeViewColumn to remove.
11200  *
11201  * Removes @column from @tree_view.
11202  *
11203  * Return value: The number of columns in @tree_view after removing.
11204  **/
11205 gint
11206 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11207                              GtkTreeViewColumn *column)
11208 {
11209   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11210   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11211   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11212
11213   if (tree_view->priv->focus_column == column)
11214     tree_view->priv->focus_column = NULL;
11215
11216   if (tree_view->priv->edited_column == column)
11217     {
11218       gtk_tree_view_stop_editing (tree_view, TRUE);
11219
11220       /* no need to, but just to be sure ... */
11221       tree_view->priv->edited_column = NULL;
11222     }
11223
11224   if (tree_view->priv->expander_column == column)
11225     tree_view->priv->expander_column = NULL;
11226
11227   g_signal_handlers_disconnect_by_func (column,
11228                                         G_CALLBACK (column_sizing_notify),
11229                                         tree_view);
11230
11231   _gtk_tree_view_column_unset_tree_view (column);
11232
11233   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11234   tree_view->priv->n_columns--;
11235
11236   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11237     {
11238       GList *list;
11239
11240       _gtk_tree_view_column_unrealize_button (column);
11241       for (list = tree_view->priv->columns; list; list = list->next)
11242         {
11243           GtkTreeViewColumn *tmp_column;
11244
11245           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11246           if (tmp_column->visible)
11247             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11248         }
11249
11250       if (tree_view->priv->n_columns == 0 &&
11251           gtk_tree_view_get_headers_visible (tree_view))
11252         gdk_window_hide (tree_view->priv->header_window);
11253
11254       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11255     }
11256
11257   g_object_unref (column);
11258   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11259
11260   return tree_view->priv->n_columns;
11261 }
11262
11263 /**
11264  * gtk_tree_view_insert_column:
11265  * @tree_view: A #GtkTreeView.
11266  * @column: The #GtkTreeViewColumn to be inserted.
11267  * @position: The position to insert @column in.
11268  *
11269  * This inserts the @column into the @tree_view at @position.  If @position is
11270  * -1, then the column is inserted at the end. If @tree_view has
11271  * "fixed_height" mode enabled, then @column must have its "sizing" property
11272  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11273  *
11274  * Return value: The number of columns in @tree_view after insertion.
11275  **/
11276 gint
11277 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11278                              GtkTreeViewColumn *column,
11279                              gint               position)
11280 {
11281   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11282   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11283   g_return_val_if_fail (column->tree_view == NULL, -1);
11284
11285   if (tree_view->priv->fixed_height_mode)
11286     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11287                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11288
11289   g_object_ref_sink (column);
11290
11291   if (tree_view->priv->n_columns == 0 &&
11292       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11293       gtk_tree_view_get_headers_visible (tree_view))
11294     {
11295       gdk_window_show (tree_view->priv->header_window);
11296     }
11297
11298   g_signal_connect (column, "notify::sizing",
11299                     G_CALLBACK (column_sizing_notify), tree_view);
11300
11301   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11302                                             column, position);
11303   tree_view->priv->n_columns++;
11304
11305   _gtk_tree_view_column_set_tree_view (column, tree_view);
11306
11307   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11308     {
11309       GList *list;
11310
11311       _gtk_tree_view_column_realize_button (column);
11312
11313       for (list = tree_view->priv->columns; list; list = list->next)
11314         {
11315           column = GTK_TREE_VIEW_COLUMN (list->data);
11316           if (column->visible)
11317             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11318         }
11319       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11320     }
11321
11322   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11323
11324   return tree_view->priv->n_columns;
11325 }
11326
11327 /**
11328  * gtk_tree_view_insert_column_with_attributes:
11329  * @tree_view: A #GtkTreeView
11330  * @position: The position to insert the new column in.
11331  * @title: The title to set the header to.
11332  * @cell: The #GtkCellRenderer.
11333  * @Varargs: A %NULL-terminated list of attributes.
11334  *
11335  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11336  * @position.  If @position is -1, then the newly created column is inserted at
11337  * the end.  The column is initialized with the attributes given. If @tree_view
11338  * has "fixed_height" mode enabled, then the new column will have its sizing
11339  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11340  *
11341  * Return value: The number of columns in @tree_view after insertion.
11342  **/
11343 gint
11344 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11345                                              gint             position,
11346                                              const gchar     *title,
11347                                              GtkCellRenderer *cell,
11348                                              ...)
11349 {
11350   GtkTreeViewColumn *column;
11351   gchar *attribute;
11352   va_list args;
11353   gint column_id;
11354
11355   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11356
11357   column = gtk_tree_view_column_new ();
11358   if (tree_view->priv->fixed_height_mode)
11359     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11360
11361   gtk_tree_view_column_set_title (column, title);
11362   gtk_tree_view_column_pack_start (column, cell, TRUE);
11363
11364   va_start (args, cell);
11365
11366   attribute = va_arg (args, gchar *);
11367
11368   while (attribute != NULL)
11369     {
11370       column_id = va_arg (args, gint);
11371       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11372       attribute = va_arg (args, gchar *);
11373     }
11374
11375   va_end (args);
11376
11377   gtk_tree_view_insert_column (tree_view, column, position);
11378
11379   return tree_view->priv->n_columns;
11380 }
11381
11382 /**
11383  * gtk_tree_view_insert_column_with_data_func:
11384  * @tree_view: a #GtkTreeView
11385  * @position: Position to insert, -1 for append
11386  * @title: column title
11387  * @cell: cell renderer for column
11388  * @func: function to set attributes of cell renderer
11389  * @data: data for @func
11390  * @dnotify: destroy notifier for @data
11391  *
11392  * Convenience function that inserts a new column into the #GtkTreeView
11393  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11394  * attributes (normally using data from the model). See also
11395  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11396  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11397  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11398  *
11399  * Return value: number of columns in the tree view post-insert
11400  **/
11401 gint
11402 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11403                                              gint                       position,
11404                                              const gchar               *title,
11405                                              GtkCellRenderer           *cell,
11406                                              GtkTreeCellDataFunc        func,
11407                                              gpointer                   data,
11408                                              GDestroyNotify             dnotify)
11409 {
11410   GtkTreeViewColumn *column;
11411
11412   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11413
11414   column = gtk_tree_view_column_new ();
11415   if (tree_view->priv->fixed_height_mode)
11416     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11417
11418   gtk_tree_view_column_set_title (column, title);
11419   gtk_tree_view_column_pack_start (column, cell, TRUE);
11420   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11421
11422   gtk_tree_view_insert_column (tree_view, column, position);
11423
11424   return tree_view->priv->n_columns;
11425 }
11426
11427 /**
11428  * gtk_tree_view_get_column:
11429  * @tree_view: A #GtkTreeView.
11430  * @n: The position of the column, counting from 0.
11431  *
11432  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11433  *
11434  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
11435  *     position is outside the range of columns.
11436  **/
11437 GtkTreeViewColumn *
11438 gtk_tree_view_get_column (GtkTreeView *tree_view,
11439                           gint         n)
11440 {
11441   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11442
11443   if (n < 0 || n >= tree_view->priv->n_columns)
11444     return NULL;
11445
11446   if (tree_view->priv->columns == NULL)
11447     return NULL;
11448
11449   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11450 }
11451
11452 /**
11453  * gtk_tree_view_get_columns:
11454  * @tree_view: A #GtkTreeView
11455  *
11456  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11457  * The returned list must be freed with g_list_free ().
11458  *
11459  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11460  **/
11461 GList *
11462 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11463 {
11464   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11465
11466   return g_list_copy (tree_view->priv->columns);
11467 }
11468
11469 /**
11470  * gtk_tree_view_move_column_after:
11471  * @tree_view: A #GtkTreeView
11472  * @column: The #GtkTreeViewColumn to be moved.
11473  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11474  *
11475  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11476  * @column is placed in the first position.
11477  **/
11478 void
11479 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11480                                  GtkTreeViewColumn *column,
11481                                  GtkTreeViewColumn *base_column)
11482 {
11483   GList *column_list_el, *base_el = NULL;
11484
11485   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11486
11487   column_list_el = g_list_find (tree_view->priv->columns, column);
11488   g_return_if_fail (column_list_el != NULL);
11489
11490   if (base_column)
11491     {
11492       base_el = g_list_find (tree_view->priv->columns, base_column);
11493       g_return_if_fail (base_el != NULL);
11494     }
11495
11496   if (column_list_el->prev == base_el)
11497     return;
11498
11499   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11500   if (base_el == NULL)
11501     {
11502       column_list_el->prev = NULL;
11503       column_list_el->next = tree_view->priv->columns;
11504       if (column_list_el->next)
11505         column_list_el->next->prev = column_list_el;
11506       tree_view->priv->columns = column_list_el;
11507     }
11508   else
11509     {
11510       column_list_el->prev = base_el;
11511       column_list_el->next = base_el->next;
11512       if (column_list_el->next)
11513         column_list_el->next->prev = column_list_el;
11514       base_el->next = column_list_el;
11515     }
11516
11517   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11518     {
11519       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11520       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11521     }
11522
11523   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11524 }
11525
11526 /**
11527  * gtk_tree_view_set_expander_column:
11528  * @tree_view: A #GtkTreeView
11529  * @column: %NULL, or the column to draw the expander arrow at.
11530  *
11531  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11532  * If @column is %NULL, then the expander arrow is always at the first
11533  * visible column.
11534  *
11535  * If you do not want expander arrow to appear in your tree, set the
11536  * expander column to a hidden column.
11537  **/
11538 void
11539 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11540                                    GtkTreeViewColumn *column)
11541 {
11542   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11543   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11544
11545   if (tree_view->priv->expander_column != column)
11546     {
11547       GList *list;
11548
11549       if (column)
11550         {
11551           /* Confirm that column is in tree_view */
11552           for (list = tree_view->priv->columns; list; list = list->next)
11553             if (list->data == column)
11554               break;
11555           g_return_if_fail (list != NULL);
11556         }
11557
11558       tree_view->priv->expander_column = column;
11559       g_object_notify (G_OBJECT (tree_view), "expander-column");
11560     }
11561 }
11562
11563 /**
11564  * gtk_tree_view_get_expander_column:
11565  * @tree_view: A #GtkTreeView
11566  *
11567  * Returns the column that is the current expander column.
11568  * This column has the expander arrow drawn next to it.
11569  *
11570  * Return value: (transfer none): The expander column.
11571  **/
11572 GtkTreeViewColumn *
11573 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11574 {
11575   GList *list;
11576
11577   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11578
11579   for (list = tree_view->priv->columns; list; list = list->next)
11580     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11581       return (GtkTreeViewColumn *) list->data;
11582   return NULL;
11583 }
11584
11585
11586 /**
11587  * gtk_tree_view_set_column_drag_function:
11588  * @tree_view: A #GtkTreeView.
11589  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11590  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11591  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11592  *
11593  * Sets a user function for determining where a column may be dropped when
11594  * dragged.  This function is called on every column pair in turn at the
11595  * beginning of a column drag to determine where a drop can take place.  The
11596  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11597  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11598  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11599  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11600  * @tree_view reverts to the default behavior of allowing all columns to be
11601  * dropped everywhere.
11602  **/
11603 void
11604 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11605                                         GtkTreeViewColumnDropFunc  func,
11606                                         gpointer                   user_data,
11607                                         GDestroyNotify             destroy)
11608 {
11609   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11610
11611   if (tree_view->priv->column_drop_func_data_destroy)
11612     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11613
11614   tree_view->priv->column_drop_func = func;
11615   tree_view->priv->column_drop_func_data = user_data;
11616   tree_view->priv->column_drop_func_data_destroy = destroy;
11617 }
11618
11619 /**
11620  * gtk_tree_view_scroll_to_point:
11621  * @tree_view: a #GtkTreeView
11622  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11623  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11624  *
11625  * Scrolls the tree view such that the top-left corner of the visible
11626  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11627  * in tree coordinates.  The @tree_view must be realized before
11628  * this function is called.  If it isn't, you probably want to be
11629  * using gtk_tree_view_scroll_to_cell().
11630  *
11631  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11632  **/
11633 void
11634 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11635                                gint         tree_x,
11636                                gint         tree_y)
11637 {
11638   GtkAdjustment *hadj;
11639   GtkAdjustment *vadj;
11640
11641   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11642   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11643
11644   hadj = tree_view->priv->hadjustment;
11645   vadj = tree_view->priv->vadjustment;
11646
11647   if (tree_x != -1)
11648     gtk_adjustment_set_value (hadj, tree_x);
11649   if (tree_y != -1)
11650     gtk_adjustment_set_value (vadj, tree_y);
11651 }
11652
11653 /**
11654  * gtk_tree_view_scroll_to_cell:
11655  * @tree_view: A #GtkTreeView.
11656  * @path: (allow-none): The path of the row to move to, or %NULL.
11657  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11658  * @use_align: whether to use alignment arguments, or %FALSE.
11659  * @row_align: The vertical alignment of the row specified by @path.
11660  * @col_align: The horizontal alignment of the column specified by @column.
11661  *
11662  * Moves the alignments of @tree_view to the position specified by @column and
11663  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11664  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11665  * or @path need to be non-%NULL.  @row_align determines where the row is
11666  * placed, and @col_align determines where @column is placed.  Both are expected
11667  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11668  * right/bottom alignment, 0.5 means center.
11669  *
11670  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11671  * tree does the minimum amount of work to scroll the cell onto the screen.
11672  * This means that the cell will be scrolled to the edge closest to its current
11673  * position.  If the cell is currently visible on the screen, nothing is done.
11674  *
11675  * This function only works if the model is set, and @path is a valid row on the
11676  * model.  If the model changes before the @tree_view is realized, the centered
11677  * path will be modified to reflect this change.
11678  **/
11679 void
11680 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11681                               GtkTreePath       *path,
11682                               GtkTreeViewColumn *column,
11683                               gboolean           use_align,
11684                               gfloat             row_align,
11685                               gfloat             col_align)
11686 {
11687   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11688   g_return_if_fail (tree_view->priv->model != NULL);
11689   g_return_if_fail (tree_view->priv->tree != NULL);
11690   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11691   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11692   g_return_if_fail (path != NULL || column != NULL);
11693
11694 #if 0
11695   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11696            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11697 #endif
11698   row_align = CLAMP (row_align, 0.0, 1.0);
11699   col_align = CLAMP (col_align, 0.0, 1.0);
11700
11701
11702   /* Note: Despite the benefits that come from having one code path for the
11703    * scrolling code, we short-circuit validate_visible_area's immplementation as
11704    * it is much slower than just going to the point.
11705    */
11706   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11707       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11708       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
11709       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11710     {
11711       if (tree_view->priv->scroll_to_path)
11712         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11713
11714       tree_view->priv->scroll_to_path = NULL;
11715       tree_view->priv->scroll_to_column = NULL;
11716
11717       if (path)
11718         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11719       if (column)
11720         tree_view->priv->scroll_to_column = column;
11721       tree_view->priv->scroll_to_use_align = use_align;
11722       tree_view->priv->scroll_to_row_align = row_align;
11723       tree_view->priv->scroll_to_col_align = col_align;
11724
11725       install_presize_handler (tree_view);
11726     }
11727   else
11728     {
11729       GdkRectangle cell_rect;
11730       GdkRectangle vis_rect;
11731       gint dest_x, dest_y;
11732
11733       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11734       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11735
11736       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11737
11738       dest_x = vis_rect.x;
11739       dest_y = vis_rect.y;
11740
11741       if (column)
11742         {
11743           if (use_align)
11744             {
11745               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11746             }
11747           else
11748             {
11749               if (cell_rect.x < vis_rect.x)
11750                 dest_x = cell_rect.x;
11751               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11752                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11753             }
11754         }
11755
11756       if (path)
11757         {
11758           if (use_align)
11759             {
11760               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11761               dest_y = MAX (dest_y, 0);
11762             }
11763           else
11764             {
11765               if (cell_rect.y < vis_rect.y)
11766                 dest_y = cell_rect.y;
11767               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11768                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11769             }
11770         }
11771
11772       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11773     }
11774 }
11775
11776 /**
11777  * gtk_tree_view_row_activated:
11778  * @tree_view: A #GtkTreeView
11779  * @path: The #GtkTreePath to be activated.
11780  * @column: The #GtkTreeViewColumn to be activated.
11781  *
11782  * Activates the cell determined by @path and @column.
11783  **/
11784 void
11785 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11786                              GtkTreePath       *path,
11787                              GtkTreeViewColumn *column)
11788 {
11789   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11790
11791   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11792 }
11793
11794
11795 static void
11796 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11797                                           GtkRBNode *node,
11798                                           gpointer   data)
11799 {
11800   GtkTreeView *tree_view = data;
11801
11802   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11803       node->children)
11804     {
11805       GtkTreePath *path;
11806       GtkTreeIter iter;
11807
11808       path = _gtk_tree_view_find_path (tree_view, tree, node);
11809       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11810
11811       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11812
11813       gtk_tree_path_free (path);
11814     }
11815
11816   if (node->children)
11817     _gtk_rbtree_traverse (node->children,
11818                           node->children->root,
11819                           G_PRE_ORDER,
11820                           gtk_tree_view_expand_all_emission_helper,
11821                           tree_view);
11822 }
11823
11824 /**
11825  * gtk_tree_view_expand_all:
11826  * @tree_view: A #GtkTreeView.
11827  *
11828  * Recursively expands all nodes in the @tree_view.
11829  **/
11830 void
11831 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11832 {
11833   GtkTreePath *path;
11834   GtkRBTree *tree;
11835   GtkRBNode *node;
11836
11837   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11838
11839   if (tree_view->priv->tree == NULL)
11840     return;
11841
11842   path = gtk_tree_path_new_first ();
11843   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11844
11845   while (node)
11846     {
11847       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11848       node = _gtk_rbtree_next (tree, node);
11849       gtk_tree_path_next (path);
11850   }
11851
11852   gtk_tree_path_free (path);
11853 }
11854
11855 /* Timeout to animate the expander during expands and collapses */
11856 static gboolean
11857 expand_collapse_timeout (gpointer data)
11858 {
11859   return do_expand_collapse (data);
11860 }
11861
11862 static void
11863 add_expand_collapse_timeout (GtkTreeView *tree_view,
11864                              GtkRBTree   *tree,
11865                              GtkRBNode   *node,
11866                              gboolean     expand)
11867 {
11868   if (tree_view->priv->expand_collapse_timeout != 0)
11869     return;
11870
11871   tree_view->priv->expand_collapse_timeout =
11872       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11873   tree_view->priv->expanded_collapsed_tree = tree;
11874   tree_view->priv->expanded_collapsed_node = node;
11875
11876   if (expand)
11877     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11878   else
11879     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11880 }
11881
11882 static void
11883 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11884 {
11885   if (tree_view->priv->expand_collapse_timeout)
11886     {
11887       g_source_remove (tree_view->priv->expand_collapse_timeout);
11888       tree_view->priv->expand_collapse_timeout = 0;
11889     }
11890
11891   if (tree_view->priv->expanded_collapsed_node != NULL)
11892     {
11893       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11894       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11895
11896       tree_view->priv->expanded_collapsed_node = NULL;
11897     }
11898 }
11899
11900 static void
11901 cancel_arrow_animation (GtkTreeView *tree_view)
11902 {
11903   if (tree_view->priv->expand_collapse_timeout)
11904     {
11905       while (do_expand_collapse (tree_view));
11906
11907       remove_expand_collapse_timeout (tree_view);
11908     }
11909 }
11910
11911 static gboolean
11912 do_expand_collapse (GtkTreeView *tree_view)
11913 {
11914   GtkRBNode *node;
11915   GtkRBTree *tree;
11916   gboolean expanding;
11917   gboolean redraw;
11918
11919   redraw = FALSE;
11920   expanding = TRUE;
11921
11922   node = tree_view->priv->expanded_collapsed_node;
11923   tree = tree_view->priv->expanded_collapsed_tree;
11924
11925   if (node->children == NULL)
11926     expanding = FALSE;
11927
11928   if (expanding)
11929     {
11930       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11931         {
11932           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11933           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11934
11935           redraw = TRUE;
11936
11937         }
11938       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11939         {
11940           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11941
11942           redraw = TRUE;
11943         }
11944     }
11945   else
11946     {
11947       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11948         {
11949           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11950           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11951
11952           redraw = TRUE;
11953         }
11954       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11955         {
11956           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11957
11958           redraw = TRUE;
11959
11960         }
11961     }
11962
11963   if (redraw)
11964     {
11965       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
11966
11967       return TRUE;
11968     }
11969
11970   return FALSE;
11971 }
11972
11973 /**
11974  * gtk_tree_view_collapse_all:
11975  * @tree_view: A #GtkTreeView.
11976  *
11977  * Recursively collapses all visible, expanded nodes in @tree_view.
11978  **/
11979 void
11980 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11981 {
11982   GtkRBTree *tree;
11983   GtkRBNode *node;
11984   GtkTreePath *path;
11985   gint *indices;
11986
11987   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11988
11989   if (tree_view->priv->tree == NULL)
11990     return;
11991
11992   path = gtk_tree_path_new ();
11993   gtk_tree_path_down (path);
11994   indices = gtk_tree_path_get_indices (path);
11995
11996   tree = tree_view->priv->tree;
11997   node = tree->root;
11998   while (node && node->left != tree->nil)
11999     node = node->left;
12000
12001   while (node)
12002     {
12003       if (node->children)
12004         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12005       indices[0]++;
12006       node = _gtk_rbtree_next (tree, node);
12007     }
12008
12009   gtk_tree_path_free (path);
12010 }
12011
12012 /**
12013  * gtk_tree_view_expand_to_path:
12014  * @tree_view: A #GtkTreeView.
12015  * @path: path to a row.
12016  *
12017  * Expands the row at @path. This will also expand all parent rows of
12018  * @path as necessary.
12019  *
12020  * Since: 2.2
12021  **/
12022 void
12023 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12024                               GtkTreePath *path)
12025 {
12026   gint i, depth;
12027   gint *indices;
12028   GtkTreePath *tmp;
12029
12030   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12031   g_return_if_fail (path != NULL);
12032
12033   depth = gtk_tree_path_get_depth (path);
12034   indices = gtk_tree_path_get_indices (path);
12035
12036   tmp = gtk_tree_path_new ();
12037   g_return_if_fail (tmp != NULL);
12038
12039   for (i = 0; i < depth; i++)
12040     {
12041       gtk_tree_path_append_index (tmp, indices[i]);
12042       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12043     }
12044
12045   gtk_tree_path_free (tmp);
12046 }
12047
12048 /* FIXME the bool return values for expand_row and collapse_row are
12049  * not analagous; they should be TRUE if the row had children and
12050  * was not already in the requested state.
12051  */
12052
12053
12054 static gboolean
12055 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12056                                GtkTreePath *path,
12057                                GtkRBTree   *tree,
12058                                GtkRBNode   *node,
12059                                gboolean     open_all,
12060                                gboolean     animate)
12061 {
12062   GtkTreeIter iter;
12063   GtkTreeIter temp;
12064   gboolean expand;
12065
12066   if (animate)
12067     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12068                   "gtk-enable-animations", &animate,
12069                   NULL);
12070
12071   remove_auto_expand_timeout (tree_view);
12072
12073   if (node->children && !open_all)
12074     return FALSE;
12075
12076   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12077     return FALSE;
12078
12079   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12080   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12081     return FALSE;
12082
12083
12084    if (node->children && open_all)
12085     {
12086       gboolean retval = FALSE;
12087       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12088
12089       gtk_tree_path_append_index (tmp_path, 0);
12090       tree = node->children;
12091       node = tree->root;
12092       while (node->left != tree->nil)
12093         node = node->left;
12094       /* try to expand the children */
12095       do
12096         {
12097          gboolean t;
12098          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12099                                             TRUE, animate);
12100          if (t)
12101            retval = TRUE;
12102
12103          gtk_tree_path_next (tmp_path);
12104          node = _gtk_rbtree_next (tree, node);
12105        }
12106       while (node != NULL);
12107
12108       gtk_tree_path_free (tmp_path);
12109
12110       return retval;
12111     }
12112
12113   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12114
12115   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12116     return FALSE;
12117
12118   if (expand)
12119     return FALSE;
12120
12121   node->children = _gtk_rbtree_new ();
12122   node->children->parent_tree = tree;
12123   node->children->parent_node = node;
12124
12125   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12126
12127   gtk_tree_view_build_tree (tree_view,
12128                             node->children,
12129                             &temp,
12130                             gtk_tree_path_get_depth (path) + 1,
12131                             open_all);
12132
12133   remove_expand_collapse_timeout (tree_view);
12134
12135   if (animate)
12136     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12137
12138   install_presize_handler (tree_view);
12139
12140   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12141   if (open_all && node->children)
12142     {
12143       _gtk_rbtree_traverse (node->children,
12144                             node->children->root,
12145                             G_PRE_ORDER,
12146                             gtk_tree_view_expand_all_emission_helper,
12147                             tree_view);
12148     }
12149   return TRUE;
12150 }
12151
12152
12153 /**
12154  * gtk_tree_view_expand_row:
12155  * @tree_view: a #GtkTreeView
12156  * @path: path to a row
12157  * @open_all: whether to recursively expand, or just expand immediate children
12158  *
12159  * Opens the row so its children are visible.
12160  *
12161  * Return value: %TRUE if the row existed and had children
12162  **/
12163 gboolean
12164 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12165                           GtkTreePath *path,
12166                           gboolean     open_all)
12167 {
12168   GtkRBTree *tree;
12169   GtkRBNode *node;
12170
12171   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12172   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12173   g_return_val_if_fail (path != NULL, FALSE);
12174
12175   if (_gtk_tree_view_find_node (tree_view,
12176                                 path,
12177                                 &tree,
12178                                 &node))
12179     return FALSE;
12180
12181   if (tree != NULL)
12182     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12183   else
12184     return FALSE;
12185 }
12186
12187 static gboolean
12188 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12189                                  GtkTreePath *path,
12190                                  GtkRBTree   *tree,
12191                                  GtkRBNode   *node,
12192                                  gboolean     animate)
12193 {
12194   GtkTreeIter iter;
12195   GtkTreeIter children;
12196   gboolean collapse;
12197   gint x, y;
12198   GList *list;
12199   GdkWindow *child, *parent;
12200
12201   if (animate)
12202     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12203                   "gtk-enable-animations", &animate,
12204                   NULL);
12205
12206   remove_auto_expand_timeout (tree_view);
12207
12208   if (node->children == NULL)
12209     return FALSE;
12210
12211   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12212
12213   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12214
12215   if (collapse)
12216     return FALSE;
12217
12218   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12219    * a chance to prelight the correct node below */
12220
12221   if (tree_view->priv->prelight_tree)
12222     {
12223       GtkRBTree *parent_tree;
12224       GtkRBNode *parent_node;
12225
12226       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12227       parent_node = tree_view->priv->prelight_tree->parent_node;
12228       while (parent_tree)
12229         {
12230           if (parent_tree == tree && parent_node == node)
12231             {
12232               ensure_unprelighted (tree_view);
12233               break;
12234             }
12235           parent_node = parent_tree->parent_node;
12236           parent_tree = parent_tree->parent_tree;
12237         }
12238     }
12239
12240   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12241
12242   for (list = tree_view->priv->columns; list; list = list->next)
12243     {
12244       GtkTreeViewColumn *column = list->data;
12245
12246       if (column->visible == FALSE)
12247         continue;
12248       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12249         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12250     }
12251
12252   if (tree_view->priv->destroy_count_func)
12253     {
12254       GtkTreePath *child_path;
12255       gint child_count = 0;
12256       child_path = gtk_tree_path_copy (path);
12257       gtk_tree_path_down (child_path);
12258       if (node->children)
12259         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12260       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12261       gtk_tree_path_free (child_path);
12262     }
12263
12264   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12265     {
12266       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12267
12268       if (gtk_tree_path_is_ancestor (path, cursor_path))
12269         {
12270           gtk_tree_row_reference_free (tree_view->priv->cursor);
12271           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12272                                                                       tree_view->priv->model,
12273                                                                       path);
12274         }
12275       gtk_tree_path_free (cursor_path);
12276     }
12277
12278   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12279     {
12280       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12281       if (gtk_tree_path_is_ancestor (path, anchor_path))
12282         {
12283           gtk_tree_row_reference_free (tree_view->priv->anchor);
12284           tree_view->priv->anchor = NULL;
12285         }
12286       gtk_tree_path_free (anchor_path);
12287     }
12288
12289   /* Stop a pending double click */
12290   tree_view->priv->last_button_x = -1;
12291   tree_view->priv->last_button_y = -1;
12292
12293   remove_expand_collapse_timeout (tree_view);
12294
12295   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12296     {
12297       _gtk_rbtree_remove (node->children);
12298       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12299     }
12300   else
12301     _gtk_rbtree_remove (node->children);
12302
12303   if (animate)
12304     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12305
12306   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12307     {
12308       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12309     }
12310
12311   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12312
12313   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12314     {
12315       /* now that we've collapsed all rows, we want to try to set the prelight
12316        * again. To do this, we fake a motion event and send it to ourselves. */
12317
12318       child = tree_view->priv->bin_window;
12319       parent = gdk_window_get_parent (child);
12320
12321       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12322         {
12323           GdkEventMotion event;
12324           gint child_x, child_y;
12325
12326           gdk_window_get_position (child, &child_x, &child_y);
12327
12328           event.window = tree_view->priv->bin_window;
12329           event.x = x - child_x;
12330           event.y = y - child_y;
12331
12332           /* despite the fact this isn't a real event, I'm almost positive it will
12333            * never trigger a drag event.  maybe_drag is the only function that uses
12334            * more than just event.x and event.y. */
12335           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12336         }
12337     }
12338
12339   return TRUE;
12340 }
12341
12342 /**
12343  * gtk_tree_view_collapse_row:
12344  * @tree_view: a #GtkTreeView
12345  * @path: path to a row in the @tree_view
12346  *
12347  * Collapses a row (hides its child rows, if they exist).
12348  *
12349  * Return value: %TRUE if the row was collapsed.
12350  **/
12351 gboolean
12352 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12353                             GtkTreePath *path)
12354 {
12355   GtkRBTree *tree;
12356   GtkRBNode *node;
12357
12358   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12359   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12360   g_return_val_if_fail (path != NULL, FALSE);
12361
12362   if (_gtk_tree_view_find_node (tree_view,
12363                                 path,
12364                                 &tree,
12365                                 &node))
12366     return FALSE;
12367
12368   if (tree == NULL || node->children == NULL)
12369     return FALSE;
12370
12371   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12372 }
12373
12374 static void
12375 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12376                                         GtkRBTree              *tree,
12377                                         GtkTreePath            *path,
12378                                         GtkTreeViewMappingFunc  func,
12379                                         gpointer                user_data)
12380 {
12381   GtkRBNode *node;
12382
12383   if (tree == NULL || tree->root == NULL)
12384     return;
12385
12386   node = tree->root;
12387
12388   while (node && node->left != tree->nil)
12389     node = node->left;
12390
12391   while (node)
12392     {
12393       if (node->children)
12394         {
12395           (* func) (tree_view, path, user_data);
12396           gtk_tree_path_down (path);
12397           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12398           gtk_tree_path_up (path);
12399         }
12400       gtk_tree_path_next (path);
12401       node = _gtk_rbtree_next (tree, node);
12402     }
12403 }
12404
12405 /**
12406  * gtk_tree_view_map_expanded_rows:
12407  * @tree_view: A #GtkTreeView
12408  * @func: (scope call): A function to be called
12409  * @data: User data to be passed to the function.
12410  *
12411  * Calls @func on all expanded rows.
12412  **/
12413 void
12414 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12415                                  GtkTreeViewMappingFunc  func,
12416                                  gpointer                user_data)
12417 {
12418   GtkTreePath *path;
12419
12420   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12421   g_return_if_fail (func != NULL);
12422
12423   path = gtk_tree_path_new_first ();
12424
12425   gtk_tree_view_map_expanded_rows_helper (tree_view,
12426                                           tree_view->priv->tree,
12427                                           path, func, user_data);
12428
12429   gtk_tree_path_free (path);
12430 }
12431
12432 /**
12433  * gtk_tree_view_row_expanded:
12434  * @tree_view: A #GtkTreeView.
12435  * @path: A #GtkTreePath to test expansion state.
12436  *
12437  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12438  *
12439  * Return value: %TRUE if #path is expanded.
12440  **/
12441 gboolean
12442 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12443                             GtkTreePath *path)
12444 {
12445   GtkRBTree *tree;
12446   GtkRBNode *node;
12447
12448   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12449   g_return_val_if_fail (path != NULL, FALSE);
12450
12451   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12452
12453   if (node == NULL)
12454     return FALSE;
12455
12456   return (node->children != NULL);
12457 }
12458
12459 /**
12460  * gtk_tree_view_get_reorderable:
12461  * @tree_view: a #GtkTreeView
12462  *
12463  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12464  * gtk_tree_view_set_reorderable().
12465  *
12466  * Return value: %TRUE if the tree can be reordered.
12467  **/
12468 gboolean
12469 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12470 {
12471   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12472
12473   return tree_view->priv->reorderable;
12474 }
12475
12476 /**
12477  * gtk_tree_view_set_reorderable:
12478  * @tree_view: A #GtkTreeView.
12479  * @reorderable: %TRUE, if the tree can be reordered.
12480  *
12481  * This function is a convenience function to allow you to reorder
12482  * models that support the #GtkDragSourceIface and the
12483  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12484  * these.  If @reorderable is %TRUE, then the user can reorder the
12485  * model by dragging and dropping rows. The developer can listen to
12486  * these changes by connecting to the model's row_inserted and
12487  * row_deleted signals. The reordering is implemented by setting up
12488  * the tree view as a drag source and destination. Therefore, drag and
12489  * drop can not be used in a reorderable view for any other purpose.
12490  *
12491  * This function does not give you any degree of control over the order -- any
12492  * reordering is allowed.  If more control is needed, you should probably
12493  * handle drag and drop manually.
12494  **/
12495 void
12496 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12497                                gboolean     reorderable)
12498 {
12499   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12500
12501   reorderable = reorderable != FALSE;
12502
12503   if (tree_view->priv->reorderable == reorderable)
12504     return;
12505
12506   if (reorderable)
12507     {
12508       const GtkTargetEntry row_targets[] = {
12509         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12510       };
12511
12512       gtk_tree_view_enable_model_drag_source (tree_view,
12513                                               GDK_BUTTON1_MASK,
12514                                               row_targets,
12515                                               G_N_ELEMENTS (row_targets),
12516                                               GDK_ACTION_MOVE);
12517       gtk_tree_view_enable_model_drag_dest (tree_view,
12518                                             row_targets,
12519                                             G_N_ELEMENTS (row_targets),
12520                                             GDK_ACTION_MOVE);
12521     }
12522   else
12523     {
12524       gtk_tree_view_unset_rows_drag_source (tree_view);
12525       gtk_tree_view_unset_rows_drag_dest (tree_view);
12526     }
12527
12528   tree_view->priv->reorderable = reorderable;
12529
12530   g_object_notify (G_OBJECT (tree_view), "reorderable");
12531 }
12532
12533 static void
12534 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12535                                GtkTreePath     *path,
12536                                gboolean         clear_and_select,
12537                                gboolean         clamp_node)
12538 {
12539   GtkRBTree *tree = NULL;
12540   GtkRBNode *node = NULL;
12541
12542   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12543     {
12544       GtkTreePath *cursor_path;
12545       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12546       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12547       gtk_tree_path_free (cursor_path);
12548     }
12549
12550   gtk_tree_row_reference_free (tree_view->priv->cursor);
12551   tree_view->priv->cursor = NULL;
12552
12553   /* One cannot set the cursor on a separator.   Also, if
12554    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12555    * before finding the tree and node belonging to path.  The
12556    * path maps to a non-existing path and we will silently bail out.
12557    * We unset tree and node to avoid further processing.
12558    */
12559   if (!row_is_separator (tree_view, NULL, path)
12560       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12561     {
12562       tree_view->priv->cursor =
12563           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12564                                             tree_view->priv->model,
12565                                             path);
12566     }
12567   else
12568     {
12569       tree = NULL;
12570       node = NULL;
12571     }
12572
12573   if (tree != NULL)
12574     {
12575       GtkRBTree *new_tree = NULL;
12576       GtkRBNode *new_node = NULL;
12577
12578       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12579         {
12580           GtkTreeSelectMode mode = 0;
12581
12582           if (tree_view->priv->ctrl_pressed)
12583             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12584           if (tree_view->priv->shift_pressed)
12585             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12586
12587           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12588                                                     node, tree, path, mode,
12589                                                     FALSE);
12590         }
12591
12592       /* We have to re-find tree and node here again, somebody might have
12593        * cleared the node or the whole tree in the GtkTreeSelection::changed
12594        * callback. If the nodes differ we bail out here.
12595        */
12596       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12597
12598       if (tree != new_tree || node != new_node)
12599         return;
12600
12601       if (clamp_node)
12602         {
12603           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12604           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12605         }
12606     }
12607
12608   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12609 }
12610
12611 /**
12612  * gtk_tree_view_get_cursor:
12613  * @tree_view: A #GtkTreeView
12614  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12615  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12616  *
12617  * Fills in @path and @focus_column with the current path and focus column.  If
12618  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12619  * currently has focus, then *@focus_column will be %NULL.
12620  *
12621  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12622  * you are done with it.
12623  **/
12624 void
12625 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12626                           GtkTreePath       **path,
12627                           GtkTreeViewColumn **focus_column)
12628 {
12629   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12630
12631   if (path)
12632     {
12633       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12634         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12635       else
12636         *path = NULL;
12637     }
12638
12639   if (focus_column)
12640     {
12641       *focus_column = tree_view->priv->focus_column;
12642     }
12643 }
12644
12645 /**
12646  * gtk_tree_view_set_cursor:
12647  * @tree_view: A #GtkTreeView
12648  * @path: A #GtkTreePath
12649  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12650  * @start_editing: %TRUE if the specified cell should start being edited.
12651  *
12652  * Sets the current keyboard focus to be at @path, and selects it.  This is
12653  * useful when you want to focus the user's attention on a particular row.  If
12654  * @focus_column is not %NULL, then focus is given to the column specified by
12655  * it. Additionally, if @focus_column is specified, and @start_editing is
12656  * %TRUE, then editing should be started in the specified cell.
12657  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12658  * in order to give keyboard focus to the widget.  Please note that editing
12659  * can only happen when the widget is realized.
12660  *
12661  * If @path is invalid for @model, the current cursor (if any) will be unset
12662  * and the function will return without failing.
12663  **/
12664 void
12665 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12666                           GtkTreePath       *path,
12667                           GtkTreeViewColumn *focus_column,
12668                           gboolean           start_editing)
12669 {
12670   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12671                                     NULL, start_editing);
12672 }
12673
12674 /**
12675  * gtk_tree_view_set_cursor_on_cell:
12676  * @tree_view: A #GtkTreeView
12677  * @path: A #GtkTreePath
12678  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12679  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12680  * @start_editing: %TRUE if the specified cell should start being edited.
12681  *
12682  * Sets the current keyboard focus to be at @path, and selects it.  This is
12683  * useful when you want to focus the user's attention on a particular row.  If
12684  * @focus_column is not %NULL, then focus is given to the column specified by
12685  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12686  * contains 2 or more editable or activatable cells, then focus is given to
12687  * the cell specified by @focus_cell. Additionally, if @focus_column is
12688  * specified, and @start_editing is %TRUE, then editing should be started in
12689  * the specified cell.  This function is often followed by
12690  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12691  * widget.  Please note that editing can only happen when the widget is
12692  * realized.
12693  *
12694  * If @path is invalid for @model, the current cursor (if any) will be unset
12695  * and the function will return without failing.
12696  *
12697  * Since: 2.2
12698  **/
12699 void
12700 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12701                                   GtkTreePath       *path,
12702                                   GtkTreeViewColumn *focus_column,
12703                                   GtkCellRenderer   *focus_cell,
12704                                   gboolean           start_editing)
12705 {
12706   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12707   g_return_if_fail (path != NULL);
12708   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12709
12710   if (!tree_view->priv->model)
12711     return;
12712
12713   if (focus_cell)
12714     {
12715       g_return_if_fail (focus_column);
12716       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12717     }
12718
12719   /* cancel the current editing, if it exists */
12720   if (tree_view->priv->edited_column &&
12721       tree_view->priv->edited_column->editable_widget)
12722     gtk_tree_view_stop_editing (tree_view, TRUE);
12723
12724   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12725
12726   if (focus_column && focus_column->visible)
12727     {
12728       GList *list;
12729       gboolean column_in_tree = FALSE;
12730
12731       for (list = tree_view->priv->columns; list; list = list->next)
12732         if (list->data == focus_column)
12733           {
12734             column_in_tree = TRUE;
12735             break;
12736           }
12737       g_return_if_fail (column_in_tree);
12738       tree_view->priv->focus_column = focus_column;
12739       if (focus_cell)
12740         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12741       if (start_editing)
12742         gtk_tree_view_start_editing (tree_view, path);
12743     }
12744 }
12745
12746 /**
12747  * gtk_tree_view_get_bin_window:
12748  * @tree_view: A #GtkTreeView
12749  *
12750  * Returns the window that @tree_view renders to.
12751  * This is used primarily to compare to <literal>event->window</literal>
12752  * to confirm that the event on @tree_view is on the right window.
12753  *
12754  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
12755  *     hasn't been realized yet
12756  **/
12757 GdkWindow *
12758 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12759 {
12760   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12761
12762   return tree_view->priv->bin_window;
12763 }
12764
12765 /**
12766  * gtk_tree_view_get_path_at_pos:
12767  * @tree_view: A #GtkTreeView.
12768  * @x: The x position to be identified (relative to bin_window).
12769  * @y: The y position to be identified (relative to bin_window).
12770  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12771  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12772  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12773  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12774  *
12775  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12776  * (please see gtk_tree_view_get_bin_window()).
12777  * That is, @x and @y are relative to an events coordinates. @x and @y must
12778  * come from an event on the @tree_view only where <literal>event->window ==
12779  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12780  * things like popup menus. If @path is non-%NULL, then it will be filled
12781  * with the #GtkTreePath at that point.  This path should be freed with
12782  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12783  * with the column at that point.  @cell_x and @cell_y return the coordinates
12784  * relative to the cell background (i.e. the @background_area passed to
12785  * gtk_cell_renderer_render()).  This function is only meaningful if
12786  * @tree_view is realized.  Therefore this function will always return %FALSE
12787  * if @tree_view is not realized or does not have a model.
12788  *
12789  * For converting widget coordinates (eg. the ones you get from
12790  * GtkWidget::query-tooltip), please see
12791  * gtk_tree_view_convert_widget_to_bin_window_coords().
12792  *
12793  * Return value: %TRUE if a row exists at that coordinate.
12794  **/
12795 gboolean
12796 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12797                                gint                x,
12798                                gint                y,
12799                                GtkTreePath       **path,
12800                                GtkTreeViewColumn **column,
12801                                gint               *cell_x,
12802                                gint               *cell_y)
12803 {
12804   GtkRBTree *tree;
12805   GtkRBNode *node;
12806   gint y_offset;
12807
12808   g_return_val_if_fail (tree_view != NULL, FALSE);
12809
12810   if (path)
12811     *path = NULL;
12812   if (column)
12813     *column = NULL;
12814
12815   if (tree_view->priv->bin_window == NULL)
12816     return FALSE;
12817
12818   if (tree_view->priv->tree == NULL)
12819     return FALSE;
12820
12821   if (x > tree_view->priv->hadjustment->upper)
12822     return FALSE;
12823
12824   if (x < 0 || y < 0)
12825     return FALSE;
12826
12827   if (column || cell_x)
12828     {
12829       GtkTreeViewColumn *tmp_column;
12830       GtkTreeViewColumn *last_column = NULL;
12831       GList *list;
12832       gint remaining_x = x;
12833       gboolean found = FALSE;
12834       gboolean rtl;
12835
12836       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12837       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12838            list;
12839            list = (rtl ? list->prev : list->next))
12840         {
12841           tmp_column = list->data;
12842
12843           if (tmp_column->visible == FALSE)
12844             continue;
12845
12846           last_column = tmp_column;
12847           if (remaining_x <= tmp_column->width)
12848             {
12849               found = TRUE;
12850
12851               if (column)
12852                 *column = tmp_column;
12853
12854               if (cell_x)
12855                 *cell_x = remaining_x;
12856
12857               break;
12858             }
12859           remaining_x -= tmp_column->width;
12860         }
12861
12862       /* If found is FALSE and there is a last_column, then it the remainder
12863        * space is in that area
12864        */
12865       if (!found)
12866         {
12867           if (last_column)
12868             {
12869               if (column)
12870                 *column = last_column;
12871
12872               if (cell_x)
12873                 *cell_x = last_column->width + remaining_x;
12874             }
12875           else
12876             {
12877               return FALSE;
12878             }
12879         }
12880     }
12881
12882   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12883                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12884                                       &tree, &node);
12885
12886   if (tree == NULL)
12887     return FALSE;
12888
12889   if (cell_y)
12890     *cell_y = y_offset;
12891
12892   if (path)
12893     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12894
12895   return TRUE;
12896 }
12897
12898
12899 /**
12900  * gtk_tree_view_get_cell_area:
12901  * @tree_view: a #GtkTreeView
12902  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12903  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12904  * @rect: rectangle to fill with cell rect
12905  *
12906  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12907  * row specified by @path and the column specified by @column.  If @path is
12908  * %NULL, or points to a path not currently displayed, the @y and @height fields
12909  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12910  * fields will be filled with 0.  The sum of all cell rects does not cover the
12911  * entire tree; there are extra pixels in between rows, for example. The
12912  * returned rectangle is equivalent to the @cell_area passed to
12913  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12914  * realized.
12915  **/
12916 void
12917 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12918                              GtkTreePath        *path,
12919                              GtkTreeViewColumn  *column,
12920                              GdkRectangle       *rect)
12921 {
12922   GtkAllocation allocation;
12923   GtkRBTree *tree = NULL;
12924   GtkRBNode *node = NULL;
12925   gint vertical_separator;
12926   gint horizontal_separator;
12927
12928   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12929   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12930   g_return_if_fail (rect != NULL);
12931   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12932   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12933
12934   gtk_widget_style_get (GTK_WIDGET (tree_view),
12935                         "vertical-separator", &vertical_separator,
12936                         "horizontal-separator", &horizontal_separator,
12937                         NULL);
12938
12939   rect->x = 0;
12940   rect->y = 0;
12941   rect->width = 0;
12942   rect->height = 0;
12943
12944   if (column)
12945     {
12946       gtk_widget_get_allocation (column->button, &allocation);
12947       rect->x = allocation.x + horizontal_separator/2;
12948       rect->width = allocation.width - horizontal_separator;
12949     }
12950
12951   if (path)
12952     {
12953       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12954
12955       /* Get vertical coords */
12956       if ((!ret && tree == NULL) || ret)
12957         return;
12958
12959       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12960       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12961
12962       if (column &&
12963           gtk_tree_view_is_expander_column (tree_view, column))
12964         {
12965           gint depth = gtk_tree_path_get_depth (path);
12966           gboolean rtl;
12967
12968           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12969
12970           if (!rtl)
12971             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12972           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12973
12974           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12975             {
12976               if (!rtl)
12977                 rect->x += depth * tree_view->priv->expander_size;
12978               rect->width -= depth * tree_view->priv->expander_size;
12979             }
12980
12981           rect->width = MAX (rect->width, 0);
12982         }
12983     }
12984 }
12985
12986 /**
12987  * gtk_tree_view_get_background_area:
12988  * @tree_view: a #GtkTreeView
12989  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12990  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12991  * @rect: rectangle to fill with cell background rect
12992  *
12993  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12994  * row specified by @path and the column specified by @column.  If @path is
12995  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12996  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12997  * fields will be filled with 0.  The returned rectangle is equivalent to the
12998  * @background_area passed to gtk_cell_renderer_render().  These background
12999  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13000  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13001  * itself, excluding surrounding borders and the tree expander area.
13002  *
13003  **/
13004 void
13005 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13006                                    GtkTreePath        *path,
13007                                    GtkTreeViewColumn  *column,
13008                                    GdkRectangle       *rect)
13009 {
13010   GtkRBTree *tree = NULL;
13011   GtkRBNode *node = NULL;
13012
13013   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13014   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13015   g_return_if_fail (rect != NULL);
13016
13017   rect->x = 0;
13018   rect->y = 0;
13019   rect->width = 0;
13020   rect->height = 0;
13021
13022   if (path)
13023     {
13024       /* Get vertical coords */
13025
13026       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13027           tree == NULL)
13028         return;
13029
13030       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13031
13032       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13033     }
13034
13035   if (column)
13036     {
13037       gint x2 = 0;
13038
13039       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13040       rect->width = x2 - rect->x;
13041     }
13042 }
13043
13044 /**
13045  * gtk_tree_view_get_visible_rect:
13046  * @tree_view: a #GtkTreeView
13047  * @visible_rect: rectangle to fill
13048  *
13049  * Fills @visible_rect with the currently-visible region of the
13050  * buffer, in tree coordinates. Convert to bin_window coordinates with
13051  * gtk_tree_view_convert_tree_to_bin_window_coords().
13052  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13053  * scrollable area of the tree.
13054  **/
13055 void
13056 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13057                                 GdkRectangle *visible_rect)
13058 {
13059   GtkAllocation allocation;
13060   GtkWidget *widget;
13061
13062   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13063
13064   widget = GTK_WIDGET (tree_view);
13065
13066   if (visible_rect)
13067     {
13068       gtk_widget_get_allocation (widget, &allocation);
13069       visible_rect->x = tree_view->priv->hadjustment->value;
13070       visible_rect->y = tree_view->priv->vadjustment->value;
13071       visible_rect->width = allocation.width;
13072       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13073     }
13074 }
13075
13076 /**
13077  * gtk_tree_view_convert_widget_to_tree_coords:
13078  * @tree_view: a #GtkTreeView
13079  * @wx: X coordinate relative to the widget
13080  * @wy: Y coordinate relative to the widget
13081  * @tx: return location for tree X coordinate
13082  * @ty: return location for tree Y coordinate
13083  *
13084  * Converts widget coordinates to coordinates for the
13085  * tree (the full scrollable area of the tree).
13086  *
13087  * Since: 2.12
13088  **/
13089 void
13090 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13091                                              gint         wx,
13092                                              gint         wy,
13093                                              gint        *tx,
13094                                              gint        *ty)
13095 {
13096   gint x, y;
13097
13098   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13099
13100   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13101                                                      wx, wy,
13102                                                      &x, &y);
13103   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13104                                                    x, y,
13105                                                    tx, ty);
13106 }
13107
13108 /**
13109  * gtk_tree_view_convert_tree_to_widget_coords:
13110  * @tree_view: a #GtkTreeView
13111  * @tx: X coordinate relative to the tree
13112  * @ty: Y coordinate relative to the tree
13113  * @wx: return location for widget X coordinate
13114  * @wy: return location for widget Y coordinate
13115  *
13116  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13117  * to widget coordinates.
13118  *
13119  * Since: 2.12
13120  **/
13121 void
13122 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13123                                              gint         tx,
13124                                              gint         ty,
13125                                              gint        *wx,
13126                                              gint        *wy)
13127 {
13128   gint x, y;
13129
13130   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13131
13132   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13133                                                    tx, ty,
13134                                                    &x, &y);
13135   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13136                                                      x, y,
13137                                                      wx, wy);
13138 }
13139
13140 /**
13141  * gtk_tree_view_convert_widget_to_bin_window_coords:
13142  * @tree_view: a #GtkTreeView
13143  * @wx: X coordinate relative to the widget
13144  * @wy: Y coordinate relative to the widget
13145  * @bx: return location for bin_window X coordinate
13146  * @by: return location for bin_window Y coordinate
13147  *
13148  * Converts widget coordinates to coordinates for the bin_window
13149  * (see gtk_tree_view_get_bin_window()).
13150  *
13151  * Since: 2.12
13152  **/
13153 void
13154 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13155                                                    gint         wx,
13156                                                    gint         wy,
13157                                                    gint        *bx,
13158                                                    gint        *by)
13159 {
13160   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13161
13162   if (bx)
13163     *bx = wx + tree_view->priv->hadjustment->value;
13164   if (by)
13165     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13166 }
13167
13168 /**
13169  * gtk_tree_view_convert_bin_window_to_widget_coords:
13170  * @tree_view: a #GtkTreeView
13171  * @bx: bin_window X coordinate
13172  * @by: bin_window Y coordinate
13173  * @wx: return location for widget X coordinate
13174  * @wy: return location for widget Y coordinate
13175  *
13176  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13177  * to widget relative coordinates.
13178  *
13179  * Since: 2.12
13180  **/
13181 void
13182 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13183                                                    gint         bx,
13184                                                    gint         by,
13185                                                    gint        *wx,
13186                                                    gint        *wy)
13187 {
13188   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13189
13190   if (wx)
13191     *wx = bx - tree_view->priv->hadjustment->value;
13192   if (wy)
13193     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13194 }
13195
13196 /**
13197  * gtk_tree_view_convert_tree_to_bin_window_coords:
13198  * @tree_view: a #GtkTreeView
13199  * @tx: tree X coordinate
13200  * @ty: tree Y coordinate
13201  * @bx: return location for X coordinate relative to bin_window
13202  * @by: return location for Y coordinate relative to bin_window
13203  *
13204  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13205  * to bin_window coordinates.
13206  *
13207  * Since: 2.12
13208  **/
13209 void
13210 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13211                                                  gint         tx,
13212                                                  gint         ty,
13213                                                  gint        *bx,
13214                                                  gint        *by)
13215 {
13216   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13217
13218   if (bx)
13219     *bx = tx;
13220   if (by)
13221     *by = ty - tree_view->priv->dy;
13222 }
13223
13224 /**
13225  * gtk_tree_view_convert_bin_window_to_tree_coords:
13226  * @tree_view: a #GtkTreeView
13227  * @bx: X coordinate relative to bin_window
13228  * @by: Y coordinate relative to bin_window
13229  * @tx: return location for tree X coordinate
13230  * @ty: return location for tree Y coordinate
13231  *
13232  * Converts bin_window coordinates to coordinates for the
13233  * tree (the full scrollable area of the tree).
13234  *
13235  * Since: 2.12
13236  **/
13237 void
13238 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13239                                                  gint         bx,
13240                                                  gint         by,
13241                                                  gint        *tx,
13242                                                  gint        *ty)
13243 {
13244   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13245
13246   if (tx)
13247     *tx = bx;
13248   if (ty)
13249     *ty = by + tree_view->priv->dy;
13250 }
13251
13252
13253
13254 /**
13255  * gtk_tree_view_get_visible_range:
13256  * @tree_view: A #GtkTreeView
13257  * @start_path: (allow-none): Return location for start of region, or %NULL.
13258  * @end_path: (allow-none): Return location for end of region, or %NULL.
13259  *
13260  * Sets @start_path and @end_path to be the first and last visible path.
13261  * Note that there may be invisible paths in between.
13262  *
13263  * The paths should be freed with gtk_tree_path_free() after use.
13264  *
13265  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13266  *
13267  * Since: 2.8
13268  **/
13269 gboolean
13270 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13271                                  GtkTreePath **start_path,
13272                                  GtkTreePath **end_path)
13273 {
13274   GtkRBTree *tree;
13275   GtkRBNode *node;
13276   gboolean retval;
13277
13278   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13279
13280   if (!tree_view->priv->tree)
13281     return FALSE;
13282
13283   retval = TRUE;
13284
13285   if (start_path)
13286     {
13287       _gtk_rbtree_find_offset (tree_view->priv->tree,
13288                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13289                                &tree, &node);
13290       if (node)
13291         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13292       else
13293         retval = FALSE;
13294     }
13295
13296   if (end_path)
13297     {
13298       gint y;
13299
13300       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13301         y = tree_view->priv->height - 1;
13302       else
13303         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13304
13305       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13306       if (node)
13307         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13308       else
13309         retval = FALSE;
13310     }
13311
13312   return retval;
13313 }
13314
13315 static void
13316 unset_reorderable (GtkTreeView *tree_view)
13317 {
13318   if (tree_view->priv->reorderable)
13319     {
13320       tree_view->priv->reorderable = FALSE;
13321       g_object_notify (G_OBJECT (tree_view), "reorderable");
13322     }
13323 }
13324
13325 /**
13326  * gtk_tree_view_enable_model_drag_source:
13327  * @tree_view: a #GtkTreeView
13328  * @start_button_mask: Mask of allowed buttons to start drag
13329  * @targets: the table of targets that the drag will support
13330  * @n_targets: the number of items in @targets
13331  * @actions: the bitmask of possible actions for a drag from this
13332  *    widget
13333  *
13334  * Turns @tree_view into a drag source for automatic DND. Calling this
13335  * method sets #GtkTreeView:reorderable to %FALSE.
13336  **/
13337 void
13338 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13339                                         GdkModifierType           start_button_mask,
13340                                         const GtkTargetEntry     *targets,
13341                                         gint                      n_targets,
13342                                         GdkDragAction             actions)
13343 {
13344   TreeViewDragInfo *di;
13345
13346   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13347
13348   gtk_drag_source_set (GTK_WIDGET (tree_view),
13349                        0,
13350                        targets,
13351                        n_targets,
13352                        actions);
13353
13354   di = ensure_info (tree_view);
13355
13356   di->start_button_mask = start_button_mask;
13357   di->source_actions = actions;
13358   di->source_set = TRUE;
13359
13360   unset_reorderable (tree_view);
13361 }
13362
13363 /**
13364  * gtk_tree_view_enable_model_drag_dest:
13365  * @tree_view: a #GtkTreeView
13366  * @targets: the table of targets that the drag will support
13367  * @n_targets: the number of items in @targets
13368  * @actions: the bitmask of possible actions for a drag from this
13369  *    widget
13370  *
13371  * Turns @tree_view into a drop destination for automatic DND. Calling
13372  * this method sets #GtkTreeView:reorderable to %FALSE.
13373  **/
13374 void
13375 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13376                                       const GtkTargetEntry     *targets,
13377                                       gint                      n_targets,
13378                                       GdkDragAction             actions)
13379 {
13380   TreeViewDragInfo *di;
13381
13382   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13383
13384   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13385                      0,
13386                      targets,
13387                      n_targets,
13388                      actions);
13389
13390   di = ensure_info (tree_view);
13391   di->dest_set = TRUE;
13392
13393   unset_reorderable (tree_view);
13394 }
13395
13396 /**
13397  * gtk_tree_view_unset_rows_drag_source:
13398  * @tree_view: a #GtkTreeView
13399  *
13400  * Undoes the effect of
13401  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13402  * #GtkTreeView:reorderable to %FALSE.
13403  **/
13404 void
13405 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13406 {
13407   TreeViewDragInfo *di;
13408
13409   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13410
13411   di = get_info (tree_view);
13412
13413   if (di)
13414     {
13415       if (di->source_set)
13416         {
13417           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13418           di->source_set = FALSE;
13419         }
13420
13421       if (!di->dest_set && !di->source_set)
13422         remove_info (tree_view);
13423     }
13424
13425   unset_reorderable (tree_view);
13426 }
13427
13428 /**
13429  * gtk_tree_view_unset_rows_drag_dest:
13430  * @tree_view: a #GtkTreeView
13431  *
13432  * Undoes the effect of
13433  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13434  * #GtkTreeView:reorderable to %FALSE.
13435  **/
13436 void
13437 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13438 {
13439   TreeViewDragInfo *di;
13440
13441   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13442
13443   di = get_info (tree_view);
13444
13445   if (di)
13446     {
13447       if (di->dest_set)
13448         {
13449           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13450           di->dest_set = FALSE;
13451         }
13452
13453       if (!di->dest_set && !di->source_set)
13454         remove_info (tree_view);
13455     }
13456
13457   unset_reorderable (tree_view);
13458 }
13459
13460 /**
13461  * gtk_tree_view_set_drag_dest_row:
13462  * @tree_view: a #GtkTreeView
13463  * @path: (allow-none): The path of the row to highlight, or %NULL.
13464  * @pos: Specifies whether to drop before, after or into the row
13465  *
13466  * Sets the row that is highlighted for feedback.
13467  **/
13468 void
13469 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13470                                  GtkTreePath            *path,
13471                                  GtkTreeViewDropPosition pos)
13472 {
13473   GtkTreePath *current_dest;
13474
13475   /* Note; this function is exported to allow a custom DND
13476    * implementation, so it can't touch TreeViewDragInfo
13477    */
13478
13479   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13480
13481   current_dest = NULL;
13482
13483   if (tree_view->priv->drag_dest_row)
13484     {
13485       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13486       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13487     }
13488
13489   /* special case a drop on an empty model */
13490   tree_view->priv->empty_view_drop = 0;
13491
13492   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13493       && gtk_tree_path_get_depth (path) == 1
13494       && gtk_tree_path_get_indices (path)[0] == 0)
13495     {
13496       gint n_children;
13497
13498       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13499                                                    NULL);
13500
13501       if (!n_children)
13502         tree_view->priv->empty_view_drop = 1;
13503     }
13504
13505   tree_view->priv->drag_dest_pos = pos;
13506
13507   if (path)
13508     {
13509       tree_view->priv->drag_dest_row =
13510         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13511       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13512     }
13513   else
13514     tree_view->priv->drag_dest_row = NULL;
13515
13516   if (current_dest)
13517     {
13518       GtkRBTree *tree, *new_tree;
13519       GtkRBNode *node, *new_node;
13520
13521       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13522       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13523
13524       if (tree && node)
13525         {
13526           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13527           if (new_tree && new_node)
13528             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13529
13530           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13531           if (new_tree && new_node)
13532             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13533         }
13534       gtk_tree_path_free (current_dest);
13535     }
13536 }
13537
13538 /**
13539  * gtk_tree_view_get_drag_dest_row:
13540  * @tree_view: a #GtkTreeView
13541  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13542  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13543  *
13544  * Gets information about the row that is highlighted for feedback.
13545  **/
13546 void
13547 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13548                                  GtkTreePath             **path,
13549                                  GtkTreeViewDropPosition  *pos)
13550 {
13551   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13552
13553   if (path)
13554     {
13555       if (tree_view->priv->drag_dest_row)
13556         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13557       else
13558         {
13559           if (tree_view->priv->empty_view_drop)
13560             *path = gtk_tree_path_new_from_indices (0, -1);
13561           else
13562             *path = NULL;
13563         }
13564     }
13565
13566   if (pos)
13567     *pos = tree_view->priv->drag_dest_pos;
13568 }
13569
13570 /**
13571  * gtk_tree_view_get_dest_row_at_pos:
13572  * @tree_view: a #GtkTreeView
13573  * @drag_x: the position to determine the destination row for
13574  * @drag_y: the position to determine the destination row for
13575  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13576  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13577  *
13578  * Determines the destination row for a given position.  @drag_x and
13579  * @drag_y are expected to be in widget coordinates.  This function is only
13580  * meaningful if @tree_view is realized.  Therefore this function will always
13581  * return %FALSE if @tree_view is not realized or does not have a model.
13582  *
13583  * Return value: whether there is a row at the given position, %TRUE if this
13584  * is indeed the case.
13585  **/
13586 gboolean
13587 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13588                                    gint                     drag_x,
13589                                    gint                     drag_y,
13590                                    GtkTreePath            **path,
13591                                    GtkTreeViewDropPosition *pos)
13592 {
13593   gint cell_y;
13594   gint bin_x, bin_y;
13595   gdouble offset_into_row;
13596   gdouble third;
13597   GdkRectangle cell;
13598   GtkTreeViewColumn *column = NULL;
13599   GtkTreePath *tmp_path = NULL;
13600
13601   /* Note; this function is exported to allow a custom DND
13602    * implementation, so it can't touch TreeViewDragInfo
13603    */
13604
13605   g_return_val_if_fail (tree_view != NULL, FALSE);
13606   g_return_val_if_fail (drag_x >= 0, FALSE);
13607   g_return_val_if_fail (drag_y >= 0, FALSE);
13608
13609   if (path)
13610     *path = NULL;
13611
13612   if (tree_view->priv->bin_window == NULL)
13613     return FALSE;
13614
13615   if (tree_view->priv->tree == NULL)
13616     return FALSE;
13617
13618   /* If in the top third of a row, we drop before that row; if
13619    * in the bottom third, drop after that row; if in the middle,
13620    * and the row has children, drop into the row.
13621    */
13622   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13623                                                      &bin_x, &bin_y);
13624
13625   if (!gtk_tree_view_get_path_at_pos (tree_view,
13626                                       bin_x,
13627                                       bin_y,
13628                                       &tmp_path,
13629                                       &column,
13630                                       NULL,
13631                                       &cell_y))
13632     return FALSE;
13633
13634   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13635                                      &cell);
13636
13637   offset_into_row = cell_y;
13638
13639   if (path)
13640     *path = tmp_path;
13641   else
13642     gtk_tree_path_free (tmp_path);
13643
13644   tmp_path = NULL;
13645
13646   third = cell.height / 3.0;
13647
13648   if (pos)
13649     {
13650       if (offset_into_row < third)
13651         {
13652           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13653         }
13654       else if (offset_into_row < (cell.height / 2.0))
13655         {
13656           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13657         }
13658       else if (offset_into_row < third * 2.0)
13659         {
13660           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13661         }
13662       else
13663         {
13664           *pos = GTK_TREE_VIEW_DROP_AFTER;
13665         }
13666     }
13667
13668   return TRUE;
13669 }
13670
13671
13672
13673 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13674 /**
13675  * gtk_tree_view_create_row_drag_icon:
13676  * @tree_view: a #GtkTreeView
13677  * @path: a #GtkTreePath in @tree_view
13678  *
13679  * Creates a #cairo_surface_t representation of the row at @path.
13680  * This image is used for a drag icon.
13681  *
13682  * Return value: (transfer full): a newly-allocated surface of the drag icon.
13683  **/
13684 cairo_surface_t *
13685 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13686                                     GtkTreePath  *path)
13687 {
13688   GtkTreeIter   iter;
13689   GtkRBTree    *tree;
13690   GtkRBNode    *node;
13691   GtkStyle *style;
13692   gint cell_offset;
13693   GList *list;
13694   GdkRectangle background_area;
13695   GtkWidget *widget;
13696   gint depth;
13697   /* start drawing inside the black outline */
13698   gint x = 1, y = 1;
13699   cairo_surface_t *surface;
13700   gint bin_window_width;
13701   gboolean is_separator = FALSE;
13702   gboolean rtl;
13703   cairo_t *cr;
13704
13705   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13706   g_return_val_if_fail (path != NULL, NULL);
13707
13708   widget = GTK_WIDGET (tree_view);
13709
13710   if (!gtk_widget_get_realized (widget))
13711     return NULL;
13712
13713   depth = gtk_tree_path_get_depth (path);
13714
13715   _gtk_tree_view_find_node (tree_view,
13716                             path,
13717                             &tree,
13718                             &node);
13719
13720   if (tree == NULL)
13721     return NULL;
13722
13723   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13724                                 &iter,
13725                                 path))
13726     return NULL;
13727
13728   style = gtk_widget_get_style (widget);
13729
13730   is_separator = row_is_separator (tree_view, &iter, NULL);
13731
13732   cell_offset = x;
13733
13734   background_area.y = y;
13735   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13736
13737   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
13738
13739   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
13740                                                CAIRO_CONTENT_COLOR,
13741                                                bin_window_width + 2,
13742                                                background_area.height + 2);
13743
13744   cr = cairo_create (surface);
13745   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13746   cairo_paint (cr);
13747
13748   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13749
13750   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13751       list;
13752       list = (rtl ? list->prev : list->next))
13753     {
13754       GtkTreeViewColumn *column = list->data;
13755       GdkRectangle cell_area;
13756       gint vertical_separator;
13757
13758       if (!column->visible)
13759         continue;
13760
13761       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13762                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13763                                                node->children?TRUE:FALSE);
13764
13765       background_area.x = cell_offset;
13766       background_area.width = column->width;
13767
13768       gtk_widget_style_get (widget,
13769                             "vertical-separator", &vertical_separator,
13770                             NULL);
13771
13772       cell_area = background_area;
13773
13774       cell_area.y += vertical_separator / 2;
13775       cell_area.height -= vertical_separator;
13776
13777       if (gtk_tree_view_is_expander_column (tree_view, column))
13778         {
13779           if (!rtl)
13780             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13781           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13782
13783           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13784             {
13785               if (!rtl)
13786                 cell_area.x += depth * tree_view->priv->expander_size;
13787               cell_area.width -= depth * tree_view->priv->expander_size;
13788             }
13789         }
13790
13791       if (gtk_tree_view_column_cell_is_visible (column))
13792         {
13793           if (is_separator)
13794             gtk_paint_hline (style,
13795                                    cr,
13796                                    GTK_STATE_NORMAL,
13797                                    widget,
13798                                    NULL,
13799                                    cell_area.x,
13800                                    cell_area.x + cell_area.width,
13801                                    cell_area.y + cell_area.height / 2);
13802           else
13803             _gtk_tree_view_column_cell_render (column,
13804                                                cr,
13805                                                &background_area,
13806                                                &cell_area,
13807                                                0);
13808         }
13809       cell_offset += column->width;
13810     }
13811
13812   cairo_set_source_rgb (cr, 0, 0, 0);
13813   cairo_rectangle (cr,
13814                    0.5, 0.5,
13815                    bin_window_width + 1,
13816                    background_area.height + 1);
13817   cairo_set_line_width (cr, 1.0);
13818   cairo_stroke (cr);
13819
13820   cairo_destroy (cr);
13821
13822   cairo_surface_set_device_offset (surface, 2, 2);
13823
13824   return surface;
13825 }
13826
13827
13828 /**
13829  * gtk_tree_view_set_destroy_count_func:
13830  * @tree_view: A #GtkTreeView
13831  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13832  * @data: (allow-none): User data to be passed to @func, or %NULL
13833  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13834  *
13835  * This function should almost never be used.  It is meant for private use by
13836  * ATK for determining the number of visible children that are removed when the
13837  * user collapses a row, or a row is deleted.
13838  **/
13839 void
13840 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13841                                       GtkTreeDestroyCountFunc  func,
13842                                       gpointer                 data,
13843                                       GDestroyNotify           destroy)
13844 {
13845   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13846
13847   if (tree_view->priv->destroy_count_destroy)
13848     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13849
13850   tree_view->priv->destroy_count_func = func;
13851   tree_view->priv->destroy_count_data = data;
13852   tree_view->priv->destroy_count_destroy = destroy;
13853 }
13854
13855
13856 /*
13857  * Interactive search
13858  */
13859
13860 /**
13861  * gtk_tree_view_set_enable_search:
13862  * @tree_view: A #GtkTreeView
13863  * @enable_search: %TRUE, if the user can search interactively
13864  *
13865  * If @enable_search is set, then the user can type in text to search through
13866  * the tree interactively (this is sometimes called "typeahead find").
13867  *
13868  * Note that even if this is %FALSE, the user can still initiate a search
13869  * using the "start-interactive-search" key binding.
13870  */
13871 void
13872 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13873                                  gboolean     enable_search)
13874 {
13875   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13876
13877   enable_search = !!enable_search;
13878
13879   if (tree_view->priv->enable_search != enable_search)
13880     {
13881        tree_view->priv->enable_search = enable_search;
13882        g_object_notify (G_OBJECT (tree_view), "enable-search");
13883     }
13884 }
13885
13886 /**
13887  * gtk_tree_view_get_enable_search:
13888  * @tree_view: A #GtkTreeView
13889  *
13890  * Returns whether or not the tree allows to start interactive searching
13891  * by typing in text.
13892  *
13893  * Return value: whether or not to let the user search interactively
13894  */
13895 gboolean
13896 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13897 {
13898   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13899
13900   return tree_view->priv->enable_search;
13901 }
13902
13903
13904 /**
13905  * gtk_tree_view_get_search_column:
13906  * @tree_view: A #GtkTreeView
13907  *
13908  * Gets the column searched on by the interactive search code.
13909  *
13910  * Return value: the column the interactive search code searches in.
13911  */
13912 gint
13913 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13914 {
13915   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13916
13917   return (tree_view->priv->search_column);
13918 }
13919
13920 /**
13921  * gtk_tree_view_set_search_column:
13922  * @tree_view: A #GtkTreeView
13923  * @column: the column of the model to search in, or -1 to disable searching
13924  *
13925  * Sets @column as the column where the interactive search code should
13926  * search in for the current model.
13927  *
13928  * If the search column is set, users can use the "start-interactive-search"
13929  * key binding to bring up search popup. The enable-search property controls
13930  * whether simply typing text will also start an interactive search.
13931  *
13932  * Note that @column refers to a column of the current model. The search
13933  * column is reset to -1 when the model is changed.
13934  */
13935 void
13936 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13937                                  gint         column)
13938 {
13939   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13940   g_return_if_fail (column >= -1);
13941
13942   if (tree_view->priv->search_column == column)
13943     return;
13944
13945   tree_view->priv->search_column = column;
13946   g_object_notify (G_OBJECT (tree_view), "search-column");
13947 }
13948
13949 /**
13950  * gtk_tree_view_get_search_equal_func:
13951  * @tree_view: A #GtkTreeView
13952  *
13953  * Returns the compare function currently in use.
13954  *
13955  * Return value: the currently used compare function for the search code.
13956  */
13957
13958 GtkTreeViewSearchEqualFunc
13959 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13960 {
13961   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13962
13963   return tree_view->priv->search_equal_func;
13964 }
13965
13966 /**
13967  * gtk_tree_view_set_search_equal_func:
13968  * @tree_view: A #GtkTreeView
13969  * @search_equal_func: the compare function to use during the search
13970  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
13971  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
13972  *
13973  * Sets the compare function for the interactive search capabilities; note
13974  * that somewhat like strcmp() returning 0 for equality
13975  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13976  **/
13977 void
13978 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
13979                                      GtkTreeViewSearchEqualFunc  search_equal_func,
13980                                      gpointer                    search_user_data,
13981                                      GDestroyNotify              search_destroy)
13982 {
13983   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13984   g_return_if_fail (search_equal_func != NULL);
13985
13986   if (tree_view->priv->search_destroy)
13987     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
13988
13989   tree_view->priv->search_equal_func = search_equal_func;
13990   tree_view->priv->search_user_data = search_user_data;
13991   tree_view->priv->search_destroy = search_destroy;
13992   if (tree_view->priv->search_equal_func == NULL)
13993     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
13994 }
13995
13996 /**
13997  * gtk_tree_view_get_search_entry:
13998  * @tree_view: A #GtkTreeView
13999  *
14000  * Returns the #GtkEntry which is currently in use as interactive search
14001  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14002  * will be returned.
14003  *
14004  * Return value: (transfer none): the entry currently in use as search entry.
14005  *
14006  * Since: 2.10
14007  */
14008 GtkEntry *
14009 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14010 {
14011   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14012
14013   if (tree_view->priv->search_custom_entry_set)
14014     return GTK_ENTRY (tree_view->priv->search_entry);
14015
14016   return NULL;
14017 }
14018
14019 /**
14020  * gtk_tree_view_set_search_entry:
14021  * @tree_view: A #GtkTreeView
14022  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14023  *
14024  * Sets the entry which the interactive search code will use for this
14025  * @tree_view.  This is useful when you want to provide a search entry
14026  * in our interface at all time at a fixed position.  Passing %NULL for
14027  * @entry will make the interactive search code use the built-in popup
14028  * entry again.
14029  *
14030  * Since: 2.10
14031  */
14032 void
14033 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14034                                 GtkEntry    *entry)
14035 {
14036   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14037   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14038
14039   if (tree_view->priv->search_custom_entry_set)
14040     {
14041       if (tree_view->priv->search_entry_changed_id)
14042         {
14043           g_signal_handler_disconnect (tree_view->priv->search_entry,
14044                                        tree_view->priv->search_entry_changed_id);
14045           tree_view->priv->search_entry_changed_id = 0;
14046         }
14047       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14048                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14049                                             tree_view);
14050
14051       g_object_unref (tree_view->priv->search_entry);
14052     }
14053   else if (tree_view->priv->search_window)
14054     {
14055       gtk_widget_destroy (tree_view->priv->search_window);
14056
14057       tree_view->priv->search_window = NULL;
14058     }
14059
14060   if (entry)
14061     {
14062       tree_view->priv->search_entry = g_object_ref (entry);
14063       tree_view->priv->search_custom_entry_set = TRUE;
14064
14065       if (tree_view->priv->search_entry_changed_id == 0)
14066         {
14067           tree_view->priv->search_entry_changed_id =
14068             g_signal_connect (tree_view->priv->search_entry, "changed",
14069                               G_CALLBACK (gtk_tree_view_search_init),
14070                               tree_view);
14071         }
14072
14073         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14074                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14075                           tree_view);
14076
14077         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14078     }
14079   else
14080     {
14081       tree_view->priv->search_entry = NULL;
14082       tree_view->priv->search_custom_entry_set = FALSE;
14083     }
14084 }
14085
14086 /**
14087  * gtk_tree_view_set_search_position_func:
14088  * @tree_view: A #GtkTreeView
14089  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14090  *    to use the default search position function
14091  * @data: (allow-none): user data to pass to @func, or %NULL
14092  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14093  *
14094  * Sets the function to use when positioning the search dialog.
14095  *
14096  * Since: 2.10
14097  **/
14098 void
14099 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14100                                         GtkTreeViewSearchPositionFunc  func,
14101                                         gpointer                       user_data,
14102                                         GDestroyNotify                 destroy)
14103 {
14104   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14105
14106   if (tree_view->priv->search_position_destroy)
14107     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14108
14109   tree_view->priv->search_position_func = func;
14110   tree_view->priv->search_position_user_data = user_data;
14111   tree_view->priv->search_position_destroy = destroy;
14112   if (tree_view->priv->search_position_func == NULL)
14113     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14114 }
14115
14116 /**
14117  * gtk_tree_view_get_search_position_func:
14118  * @tree_view: A #GtkTreeView
14119  *
14120  * Returns the positioning function currently in use.
14121  *
14122  * Return value: the currently used function for positioning the search dialog.
14123  *
14124  * Since: 2.10
14125  */
14126 GtkTreeViewSearchPositionFunc
14127 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14128 {
14129   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14130
14131   return tree_view->priv->search_position_func;
14132 }
14133
14134
14135 static void
14136 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14137                                   GtkTreeView *tree_view,
14138                                   GdkDevice   *device)
14139 {
14140   if (tree_view->priv->disable_popdown)
14141     return;
14142
14143   if (tree_view->priv->search_entry_changed_id)
14144     {
14145       g_signal_handler_disconnect (tree_view->priv->search_entry,
14146                                    tree_view->priv->search_entry_changed_id);
14147       tree_view->priv->search_entry_changed_id = 0;
14148     }
14149   if (tree_view->priv->typeselect_flush_timeout)
14150     {
14151       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14152       tree_view->priv->typeselect_flush_timeout = 0;
14153     }
14154
14155   if (gtk_widget_get_visible (search_dialog))
14156     {
14157       /* send focus-in event */
14158       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14159       gtk_widget_hide (search_dialog);
14160       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14161       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14162     }
14163 }
14164
14165 static void
14166 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14167                                     GtkWidget   *search_dialog,
14168                                     gpointer     user_data)
14169 {
14170   gint x, y;
14171   gint tree_x, tree_y;
14172   gint tree_width, tree_height;
14173   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14174   GdkScreen *screen = gdk_window_get_screen (tree_window);
14175   GtkRequisition requisition;
14176   gint monitor_num;
14177   GdkRectangle monitor;
14178
14179   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14180   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14181
14182   gtk_widget_realize (search_dialog);
14183
14184   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14185   tree_width = gdk_window_get_width (tree_window);
14186   tree_height = gdk_window_get_height (tree_window);
14187   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
14188
14189   if (tree_x + tree_width > gdk_screen_get_width (screen))
14190     x = gdk_screen_get_width (screen) - requisition.width;
14191   else if (tree_x + tree_width - requisition.width < 0)
14192     x = 0;
14193   else
14194     x = tree_x + tree_width - requisition.width;
14195
14196   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14197     y = gdk_screen_get_height (screen) - requisition.height;
14198   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14199     y = 0;
14200   else
14201     y = tree_y + tree_height;
14202
14203   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14204 }
14205
14206 static void
14207 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14208                                       GtkMenu  *menu,
14209                                       gpointer  data)
14210 {
14211   GtkTreeView *tree_view = (GtkTreeView *)data;
14212
14213   tree_view->priv->disable_popdown = 1;
14214   g_signal_connect (menu, "hide",
14215                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14216 }
14217
14218 /* Because we're visible but offscreen, we just set a flag in the preedit
14219  * callback.
14220  */
14221 static void
14222 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14223                                       GtkTreeView  *tree_view)
14224 {
14225   tree_view->priv->imcontext_changed = 1;
14226   if (tree_view->priv->typeselect_flush_timeout)
14227     {
14228       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14229       tree_view->priv->typeselect_flush_timeout =
14230         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14231                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14232                        tree_view);
14233     }
14234
14235 }
14236
14237 static void
14238 gtk_tree_view_search_activate (GtkEntry    *entry,
14239                                GtkTreeView *tree_view)
14240 {
14241   GtkTreePath *path;
14242   GtkRBNode *node;
14243   GtkRBTree *tree;
14244
14245   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14246                                     tree_view,
14247                                     gtk_get_current_event_device ());
14248
14249   /* If we have a row selected and it's the cursor row, we activate
14250    * the row XXX */
14251   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14252     {
14253       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14254
14255       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14256
14257       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14258         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14259
14260       gtk_tree_path_free (path);
14261     }
14262 }
14263
14264 static gboolean
14265 gtk_tree_view_real_search_enable_popdown (gpointer data)
14266 {
14267   GtkTreeView *tree_view = (GtkTreeView *)data;
14268
14269   tree_view->priv->disable_popdown = 0;
14270
14271   return FALSE;
14272 }
14273
14274 static void
14275 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14276                                      gpointer   data)
14277 {
14278   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14279 }
14280
14281 static gboolean
14282 gtk_tree_view_search_delete_event (GtkWidget *widget,
14283                                    GdkEventAny *event,
14284                                    GtkTreeView *tree_view)
14285 {
14286   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14287
14288   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14289
14290   return TRUE;
14291 }
14292
14293 static gboolean
14294 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14295                                          GdkEventButton *event,
14296                                          GtkTreeView *tree_view)
14297 {
14298   GdkDevice *keyb_device;
14299
14300   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14301
14302   keyb_device = gdk_device_get_associated_device (event->device);
14303   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14304
14305   if (event->window == tree_view->priv->bin_window)
14306     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14307
14308   return TRUE;
14309 }
14310
14311 static gboolean
14312 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14313                                    GdkEventScroll *event,
14314                                    GtkTreeView *tree_view)
14315 {
14316   gboolean retval = FALSE;
14317
14318   if (event->direction == GDK_SCROLL_UP)
14319     {
14320       gtk_tree_view_search_move (widget, tree_view, TRUE);
14321       retval = TRUE;
14322     }
14323   else if (event->direction == GDK_SCROLL_DOWN)
14324     {
14325       gtk_tree_view_search_move (widget, tree_view, FALSE);
14326       retval = TRUE;
14327     }
14328
14329   /* renew the flush timeout */
14330   if (retval && tree_view->priv->typeselect_flush_timeout
14331       && !tree_view->priv->search_custom_entry_set)
14332     {
14333       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14334       tree_view->priv->typeselect_flush_timeout =
14335         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14336                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14337                        tree_view);
14338     }
14339
14340   return retval;
14341 }
14342
14343 static gboolean
14344 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14345                                       GdkEventKey *event,
14346                                       GtkTreeView *tree_view)
14347 {
14348   gboolean retval = FALSE;
14349
14350   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14351   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14352
14353   /* close window and cancel the search */
14354   if (!tree_view->priv->search_custom_entry_set
14355       && (event->keyval == GDK_KEY_Escape ||
14356           event->keyval == GDK_KEY_Tab ||
14357             event->keyval == GDK_KEY_KP_Tab ||
14358             event->keyval == GDK_KEY_ISO_Left_Tab))
14359     {
14360       gtk_tree_view_search_dialog_hide (widget, tree_view,
14361                                         gdk_event_get_device ((GdkEvent *) event));
14362       return TRUE;
14363     }
14364
14365   /* select previous matching iter */
14366   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14367     {
14368       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14369         gtk_widget_error_bell (widget);
14370
14371       retval = TRUE;
14372     }
14373
14374   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14375       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14376     {
14377       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14378         gtk_widget_error_bell (widget);
14379
14380       retval = TRUE;
14381     }
14382
14383   /* select next matching iter */
14384   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14385     {
14386       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14387         gtk_widget_error_bell (widget);
14388
14389       retval = TRUE;
14390     }
14391
14392   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14393       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14394     {
14395       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14396         gtk_widget_error_bell (widget);
14397
14398       retval = TRUE;
14399     }
14400
14401   /* renew the flush timeout */
14402   if (retval && tree_view->priv->typeselect_flush_timeout
14403       && !tree_view->priv->search_custom_entry_set)
14404     {
14405       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14406       tree_view->priv->typeselect_flush_timeout =
14407         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14408                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14409                        tree_view);
14410     }
14411
14412   return retval;
14413 }
14414
14415 /*  this function returns FALSE if there is a search string but
14416  *  nothing was found, and TRUE otherwise.
14417  */
14418 static gboolean
14419 gtk_tree_view_search_move (GtkWidget   *window,
14420                            GtkTreeView *tree_view,
14421                            gboolean     up)
14422 {
14423   gboolean ret;
14424   gint len;
14425   gint count = 0;
14426   const gchar *text;
14427   GtkTreeIter iter;
14428   GtkTreeModel *model;
14429   GtkTreeSelection *selection;
14430
14431   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14432
14433   g_return_val_if_fail (text != NULL, FALSE);
14434
14435   len = strlen (text);
14436
14437   if (up && tree_view->priv->selected_iter == 1)
14438     return strlen (text) < 1;
14439
14440   len = strlen (text);
14441
14442   if (len < 1)
14443     return TRUE;
14444
14445   model = gtk_tree_view_get_model (tree_view);
14446   selection = gtk_tree_view_get_selection (tree_view);
14447
14448   /* search */
14449   gtk_tree_selection_unselect_all (selection);
14450   if (!gtk_tree_model_get_iter_first (model, &iter))
14451     return TRUE;
14452
14453   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14454                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14455
14456   if (ret)
14457     {
14458       /* found */
14459       tree_view->priv->selected_iter += up?(-1):(1);
14460       return TRUE;
14461     }
14462   else
14463     {
14464       /* return to old iter */
14465       count = 0;
14466       gtk_tree_model_get_iter_first (model, &iter);
14467       gtk_tree_view_search_iter (model, selection,
14468                                  &iter, text,
14469                                  &count, tree_view->priv->selected_iter);
14470       return FALSE;
14471     }
14472 }
14473
14474 static gboolean
14475 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14476                                  gint          column,
14477                                  const gchar  *key,
14478                                  GtkTreeIter  *iter,
14479                                  gpointer      search_data)
14480 {
14481   gboolean retval = TRUE;
14482   const gchar *str;
14483   gchar *normalized_string;
14484   gchar *normalized_key;
14485   gchar *case_normalized_string = NULL;
14486   gchar *case_normalized_key = NULL;
14487   GValue value = {0,};
14488   GValue transformed = {0,};
14489
14490   gtk_tree_model_get_value (model, iter, column, &value);
14491
14492   g_value_init (&transformed, G_TYPE_STRING);
14493
14494   if (!g_value_transform (&value, &transformed))
14495     {
14496       g_value_unset (&value);
14497       return TRUE;
14498     }
14499
14500   g_value_unset (&value);
14501
14502   str = g_value_get_string (&transformed);
14503   if (!str)
14504     {
14505       g_value_unset (&transformed);
14506       return TRUE;
14507     }
14508
14509   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14510   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14511
14512   if (normalized_string && normalized_key)
14513     {
14514       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14515       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14516
14517       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14518         retval = FALSE;
14519     }
14520
14521   g_value_unset (&transformed);
14522   g_free (normalized_key);
14523   g_free (normalized_string);
14524   g_free (case_normalized_key);
14525   g_free (case_normalized_string);
14526
14527   return retval;
14528 }
14529
14530 static gboolean
14531 gtk_tree_view_search_iter (GtkTreeModel     *model,
14532                            GtkTreeSelection *selection,
14533                            GtkTreeIter      *iter,
14534                            const gchar      *text,
14535                            gint             *count,
14536                            gint              n)
14537 {
14538   GtkRBTree *tree = NULL;
14539   GtkRBNode *node = NULL;
14540   GtkTreePath *path;
14541
14542   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14543
14544   path = gtk_tree_model_get_path (model, iter);
14545   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14546
14547   do
14548     {
14549       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14550         {
14551           (*count)++;
14552           if (*count == n)
14553             {
14554               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14555                                             TRUE, 0.5, 0.0);
14556               gtk_tree_selection_select_iter (selection, iter);
14557               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14558
14559               if (path)
14560                 gtk_tree_path_free (path);
14561
14562               return TRUE;
14563             }
14564         }
14565
14566       if (node->children)
14567         {
14568           gboolean has_child;
14569           GtkTreeIter tmp;
14570
14571           tree = node->children;
14572           node = tree->root;
14573
14574           while (node->left != tree->nil)
14575             node = node->left;
14576
14577           tmp = *iter;
14578           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14579           gtk_tree_path_down (path);
14580
14581           /* sanity check */
14582           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14583         }
14584       else
14585         {
14586           gboolean done = FALSE;
14587
14588           do
14589             {
14590               node = _gtk_rbtree_next (tree, node);
14591
14592               if (node)
14593                 {
14594                   gboolean has_next;
14595
14596                   has_next = gtk_tree_model_iter_next (model, iter);
14597
14598                   done = TRUE;
14599                   gtk_tree_path_next (path);
14600
14601                   /* sanity check */
14602                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14603                 }
14604               else
14605                 {
14606                   gboolean has_parent;
14607                   GtkTreeIter tmp_iter = *iter;
14608
14609                   node = tree->parent_node;
14610                   tree = tree->parent_tree;
14611
14612                   if (!tree)
14613                     {
14614                       if (path)
14615                         gtk_tree_path_free (path);
14616
14617                       /* we've run out of tree, done with this func */
14618                       return FALSE;
14619                     }
14620
14621                   has_parent = gtk_tree_model_iter_parent (model,
14622                                                            iter,
14623                                                            &tmp_iter);
14624                   gtk_tree_path_up (path);
14625
14626                   /* sanity check */
14627                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14628                 }
14629             }
14630           while (!done);
14631         }
14632     }
14633   while (1);
14634
14635   return FALSE;
14636 }
14637
14638 static void
14639 gtk_tree_view_search_init (GtkWidget   *entry,
14640                            GtkTreeView *tree_view)
14641 {
14642   gint ret;
14643   gint count = 0;
14644   const gchar *text;
14645   GtkTreeIter iter;
14646   GtkTreeModel *model;
14647   GtkTreeSelection *selection;
14648
14649   g_return_if_fail (GTK_IS_ENTRY (entry));
14650   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14651
14652   text = gtk_entry_get_text (GTK_ENTRY (entry));
14653
14654   model = gtk_tree_view_get_model (tree_view);
14655   selection = gtk_tree_view_get_selection (tree_view);
14656
14657   /* search */
14658   gtk_tree_selection_unselect_all (selection);
14659   if (tree_view->priv->typeselect_flush_timeout
14660       && !tree_view->priv->search_custom_entry_set)
14661     {
14662       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14663       tree_view->priv->typeselect_flush_timeout =
14664         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14665                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14666                        tree_view);
14667     }
14668
14669   if (*text == '\0')
14670     return;
14671
14672   if (!gtk_tree_model_get_iter_first (model, &iter))
14673     return;
14674
14675   ret = gtk_tree_view_search_iter (model, selection,
14676                                    &iter, text,
14677                                    &count, 1);
14678
14679   if (ret)
14680     tree_view->priv->selected_iter = 1;
14681 }
14682
14683 static void
14684 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14685                              GtkTreeView     *tree_view)
14686 {
14687   if (tree_view->priv->edited_column == NULL)
14688     return;
14689
14690   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14691   tree_view->priv->edited_column = NULL;
14692
14693   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14694     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14695
14696   g_signal_handlers_disconnect_by_func (cell_editable,
14697                                         gtk_tree_view_remove_widget,
14698                                         tree_view);
14699
14700   gtk_container_remove (GTK_CONTAINER (tree_view),
14701                         GTK_WIDGET (cell_editable));
14702
14703   /* FIXME should only redraw a single node */
14704   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14705 }
14706
14707 static gboolean
14708 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14709                              GtkTreePath *cursor_path)
14710 {
14711   GtkTreeIter iter;
14712   GdkRectangle background_area;
14713   GdkRectangle cell_area;
14714   GtkCellEditable *editable_widget = NULL;
14715   gchar *path_string;
14716   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14717   gint retval = FALSE;
14718   GtkRBTree *cursor_tree;
14719   GtkRBNode *cursor_node;
14720
14721   g_assert (tree_view->priv->focus_column);
14722
14723   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14724     return FALSE;
14725
14726   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14727       cursor_node == NULL)
14728     return FALSE;
14729
14730   path_string = gtk_tree_path_to_string (cursor_path);
14731   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14732
14733   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14734
14735   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14736                                            tree_view->priv->model,
14737                                            &iter,
14738                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14739                                            cursor_node->children?TRUE:FALSE);
14740   gtk_tree_view_get_background_area (tree_view,
14741                                      cursor_path,
14742                                      tree_view->priv->focus_column,
14743                                      &background_area);
14744   gtk_tree_view_get_cell_area (tree_view,
14745                                cursor_path,
14746                                tree_view->priv->focus_column,
14747                                &cell_area);
14748
14749   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14750                                         &editable_widget,
14751                                         NULL,
14752                                         path_string,
14753                                         &background_area,
14754                                         &cell_area,
14755                                         flags))
14756     {
14757       retval = TRUE;
14758       if (editable_widget != NULL)
14759         {
14760           gint left, right;
14761           GdkRectangle area;
14762           GtkCellRenderer *cell;
14763
14764           area = cell_area;
14765           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14766
14767           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14768
14769           area.x += left;
14770           area.width -= right + left;
14771
14772           gtk_tree_view_real_start_editing (tree_view,
14773                                             tree_view->priv->focus_column,
14774                                             cursor_path,
14775                                             editable_widget,
14776                                             &area,
14777                                             NULL,
14778                                             flags);
14779         }
14780
14781     }
14782   g_free (path_string);
14783   return retval;
14784 }
14785
14786 static void
14787 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14788                                   GtkTreeViewColumn *column,
14789                                   GtkTreePath       *path,
14790                                   GtkCellEditable   *cell_editable,
14791                                   GdkRectangle      *cell_area,
14792                                   GdkEvent          *event,
14793                                   guint              flags)
14794 {
14795   gint pre_val = tree_view->priv->vadjustment->value;
14796   GtkRequisition requisition;
14797
14798   tree_view->priv->edited_column = column;
14799   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14800
14801   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14802   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14803
14804   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
14805                                  &requisition, NULL);
14806
14807   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14808
14809   if (requisition.height < cell_area->height)
14810     {
14811       gint diff = cell_area->height - requisition.height;
14812       gtk_tree_view_put (tree_view,
14813                          GTK_WIDGET (cell_editable),
14814                          cell_area->x, cell_area->y + diff/2,
14815                          cell_area->width, requisition.height);
14816     }
14817   else
14818     {
14819       gtk_tree_view_put (tree_view,
14820                          GTK_WIDGET (cell_editable),
14821                          cell_area->x, cell_area->y,
14822                          cell_area->width, cell_area->height);
14823     }
14824
14825   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14826                                    (GdkEvent *)event);
14827
14828   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14829   g_signal_connect (cell_editable, "remove-widget",
14830                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14831 }
14832
14833 static void
14834 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14835                             gboolean     cancel_editing)
14836 {
14837   GtkTreeViewColumn *column;
14838   GtkCellRenderer *cell;
14839
14840   if (tree_view->priv->edited_column == NULL)
14841     return;
14842
14843   /*
14844    * This is very evil. We need to do this, because
14845    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14846    * later on. If gtk_tree_view_row_changed notices
14847    * tree_view->priv->edited_column != NULL, it'll call
14848    * gtk_tree_view_stop_editing again. Bad things will happen then.
14849    *
14850    * Please read that again if you intend to modify anything here.
14851    */
14852
14853   column = tree_view->priv->edited_column;
14854   tree_view->priv->edited_column = NULL;
14855
14856   cell = _gtk_tree_view_column_get_edited_cell (column);
14857   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14858
14859   if (!cancel_editing)
14860     gtk_cell_editable_editing_done (column->editable_widget);
14861
14862   tree_view->priv->edited_column = column;
14863
14864   gtk_cell_editable_remove_widget (column->editable_widget);
14865 }
14866
14867
14868 /**
14869  * gtk_tree_view_set_hover_selection:
14870  * @tree_view: a #GtkTreeView
14871  * @hover: %TRUE to enable hover selection mode
14872  *
14873  * Enables of disables the hover selection mode of @tree_view.
14874  * Hover selection makes the selected row follow the pointer.
14875  * Currently, this works only for the selection modes
14876  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14877  *
14878  * Since: 2.6
14879  **/
14880 void
14881 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14882                                    gboolean     hover)
14883 {
14884   hover = hover != FALSE;
14885
14886   if (hover != tree_view->priv->hover_selection)
14887     {
14888       tree_view->priv->hover_selection = hover;
14889
14890       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14891     }
14892 }
14893
14894 /**
14895  * gtk_tree_view_get_hover_selection:
14896  * @tree_view: a #GtkTreeView
14897  *
14898  * Returns whether hover selection mode is turned on for @tree_view.
14899  *
14900  * Return value: %TRUE if @tree_view is in hover selection mode
14901  *
14902  * Since: 2.6
14903  **/
14904 gboolean
14905 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14906 {
14907   return tree_view->priv->hover_selection;
14908 }
14909
14910 /**
14911  * gtk_tree_view_set_hover_expand:
14912  * @tree_view: a #GtkTreeView
14913  * @expand: %TRUE to enable hover selection mode
14914  *
14915  * Enables of disables the hover expansion mode of @tree_view.
14916  * Hover expansion makes rows expand or collapse if the pointer
14917  * moves over them.
14918  *
14919  * Since: 2.6
14920  **/
14921 void
14922 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14923                                 gboolean     expand)
14924 {
14925   expand = expand != FALSE;
14926
14927   if (expand != tree_view->priv->hover_expand)
14928     {
14929       tree_view->priv->hover_expand = expand;
14930
14931       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14932     }
14933 }
14934
14935 /**
14936  * gtk_tree_view_get_hover_expand:
14937  * @tree_view: a #GtkTreeView
14938  *
14939  * Returns whether hover expansion mode is turned on for @tree_view.
14940  *
14941  * Return value: %TRUE if @tree_view is in hover expansion mode
14942  *
14943  * Since: 2.6
14944  **/
14945 gboolean
14946 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14947 {
14948   return tree_view->priv->hover_expand;
14949 }
14950
14951 /**
14952  * gtk_tree_view_set_rubber_banding:
14953  * @tree_view: a #GtkTreeView
14954  * @enable: %TRUE to enable rubber banding
14955  *
14956  * Enables or disables rubber banding in @tree_view.  If the selection mode
14957  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14958  * multiple rows by dragging the mouse.
14959  *
14960  * Since: 2.10
14961  **/
14962 void
14963 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14964                                   gboolean     enable)
14965 {
14966   enable = enable != FALSE;
14967
14968   if (enable != tree_view->priv->rubber_banding_enable)
14969     {
14970       tree_view->priv->rubber_banding_enable = enable;
14971
14972       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14973     }
14974 }
14975
14976 /**
14977  * gtk_tree_view_get_rubber_banding:
14978  * @tree_view: a #GtkTreeView
14979  *
14980  * Returns whether rubber banding is turned on for @tree_view.  If the
14981  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14982  * user to select multiple rows by dragging the mouse.
14983  *
14984  * Return value: %TRUE if rubber banding in @tree_view is enabled.
14985  *
14986  * Since: 2.10
14987  **/
14988 gboolean
14989 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
14990 {
14991   return tree_view->priv->rubber_banding_enable;
14992 }
14993
14994 /**
14995  * gtk_tree_view_is_rubber_banding_active:
14996  * @tree_view: a #GtkTreeView
14997  *
14998  * Returns whether a rubber banding operation is currently being done
14999  * in @tree_view.
15000  *
15001  * Return value: %TRUE if a rubber banding operation is currently being
15002  * done in @tree_view.
15003  *
15004  * Since: 2.12
15005  **/
15006 gboolean
15007 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15008 {
15009   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15010
15011   if (tree_view->priv->rubber_banding_enable
15012       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15013     return TRUE;
15014
15015   return FALSE;
15016 }
15017
15018 /**
15019  * gtk_tree_view_get_row_separator_func:
15020  * @tree_view: a #GtkTreeView
15021  *
15022  * Returns the current row separator function.
15023  *
15024  * Return value: the current row separator function.
15025  *
15026  * Since: 2.6
15027  **/
15028 GtkTreeViewRowSeparatorFunc
15029 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15030 {
15031   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15032
15033   return tree_view->priv->row_separator_func;
15034 }
15035
15036 /**
15037  * gtk_tree_view_set_row_separator_func:
15038  * @tree_view: a #GtkTreeView
15039  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15040  * @data: (allow-none): user data to pass to @func, or %NULL
15041  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15042  *
15043  * Sets the row separator function, which is used to determine
15044  * whether a row should be drawn as a separator. If the row separator
15045  * function is %NULL, no separators are drawn. This is the default value.
15046  *
15047  * Since: 2.6
15048  **/
15049 void
15050 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15051                                       GtkTreeViewRowSeparatorFunc  func,
15052                                       gpointer                     data,
15053                                       GDestroyNotify               destroy)
15054 {
15055   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15056
15057   if (tree_view->priv->row_separator_destroy)
15058     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15059
15060   tree_view->priv->row_separator_func = func;
15061   tree_view->priv->row_separator_data = data;
15062   tree_view->priv->row_separator_destroy = destroy;
15063
15064   /* Have the tree recalculate heights */
15065   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15066   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15067 }
15068
15069
15070 static void
15071 gtk_tree_view_grab_notify (GtkWidget *widget,
15072                            gboolean   was_grabbed)
15073 {
15074   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15075
15076   tree_view->priv->in_grab = !was_grabbed;
15077
15078   if (!was_grabbed)
15079     {
15080       tree_view->priv->pressed_button = -1;
15081
15082       if (tree_view->priv->rubber_band_status)
15083         gtk_tree_view_stop_rubber_band (tree_view);
15084     }
15085 }
15086
15087 static void
15088 gtk_tree_view_state_changed (GtkWidget      *widget,
15089                              GtkStateType    previous_state)
15090 {
15091   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15092
15093   if (gtk_widget_get_realized (widget))
15094     {
15095       gdk_window_set_background (tree_view->priv->bin_window,
15096                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15097     }
15098
15099   gtk_widget_queue_draw (widget);
15100 }
15101
15102 /**
15103  * gtk_tree_view_get_grid_lines:
15104  * @tree_view: a #GtkTreeView
15105  *
15106  * Returns which grid lines are enabled in @tree_view.
15107  *
15108  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15109  * are enabled.
15110  *
15111  * Since: 2.10
15112  */
15113 GtkTreeViewGridLines
15114 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15115 {
15116   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15117
15118   return tree_view->priv->grid_lines;
15119 }
15120
15121 /**
15122  * gtk_tree_view_set_grid_lines:
15123  * @tree_view: a #GtkTreeView
15124  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15125  * enable.
15126  *
15127  * Sets which grid lines to draw in @tree_view.
15128  *
15129  * Since: 2.10
15130  */
15131 void
15132 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15133                               GtkTreeViewGridLines   grid_lines)
15134 {
15135   GtkTreeViewPrivate *priv;
15136   GtkWidget *widget;
15137   GtkTreeViewGridLines old_grid_lines;
15138
15139   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15140
15141   priv = tree_view->priv;
15142   widget = GTK_WIDGET (tree_view);
15143
15144   old_grid_lines = priv->grid_lines;
15145   priv->grid_lines = grid_lines;
15146
15147   if (gtk_widget_get_realized (widget))
15148     {
15149       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15150           priv->grid_line_width)
15151         {
15152           priv->grid_line_width = 0;
15153         }
15154
15155       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15156           !priv->grid_line_width)
15157         {
15158           gint8 *dash_list;
15159
15160           gtk_widget_style_get (widget,
15161                                 "grid-line-width", &priv->grid_line_width,
15162                                 "grid-line-pattern", (gchar *)&dash_list,
15163                                 NULL);
15164
15165           if (dash_list)
15166             {
15167               priv->grid_line_dashes[0] = dash_list[0];
15168               if (dash_list[0])
15169                 priv->grid_line_dashes[1] = dash_list[1];
15170
15171               g_free (dash_list);
15172             }
15173           else
15174             {
15175               priv->grid_line_dashes[0] = 1;
15176               priv->grid_line_dashes[1] = 1;
15177             }
15178         }
15179     }
15180
15181   if (old_grid_lines != grid_lines)
15182     {
15183       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15184
15185       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15186     }
15187 }
15188
15189 /**
15190  * gtk_tree_view_get_enable_tree_lines:
15191  * @tree_view: a #GtkTreeView.
15192  *
15193  * Returns whether or not tree lines are drawn in @tree_view.
15194  *
15195  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15196  * otherwise.
15197  *
15198  * Since: 2.10
15199  */
15200 gboolean
15201 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15202 {
15203   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15204
15205   return tree_view->priv->tree_lines_enabled;
15206 }
15207
15208 /**
15209  * gtk_tree_view_set_enable_tree_lines:
15210  * @tree_view: a #GtkTreeView
15211  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15212  *
15213  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15214  * This does not have any visible effects for lists.
15215  *
15216  * Since: 2.10
15217  */
15218 void
15219 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15220                                      gboolean     enabled)
15221 {
15222   GtkTreeViewPrivate *priv;
15223   GtkWidget *widget;
15224   gboolean was_enabled;
15225
15226   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15227
15228   enabled = enabled != FALSE;
15229
15230   priv = tree_view->priv;
15231   widget = GTK_WIDGET (tree_view);
15232
15233   was_enabled = priv->tree_lines_enabled;
15234
15235   priv->tree_lines_enabled = enabled;
15236
15237   if (gtk_widget_get_realized (widget))
15238     {
15239       if (!enabled && priv->tree_line_width)
15240         {
15241           priv->tree_line_width = 0;
15242         }
15243
15244       if (enabled && !priv->tree_line_width)
15245         {
15246           gint8 *dash_list;
15247           gtk_widget_style_get (widget,
15248                                 "tree-line-width", &priv->tree_line_width,
15249                                 "tree-line-pattern", (gchar *)&dash_list,
15250                                 NULL);
15251
15252           if (dash_list)
15253             {
15254               priv->tree_line_dashes[0] = dash_list[0];
15255               if (dash_list[0])
15256                 priv->tree_line_dashes[1] = dash_list[1];
15257
15258               g_free (dash_list);
15259             }
15260           else
15261             {
15262               priv->tree_line_dashes[0] = 1;
15263               priv->tree_line_dashes[1] = 1;
15264             }
15265         }
15266     }
15267
15268   if (was_enabled != enabled)
15269     {
15270       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15271
15272       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15273     }
15274 }
15275
15276
15277 /**
15278  * gtk_tree_view_set_show_expanders:
15279  * @tree_view: a #GtkTreeView
15280  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15281  *
15282  * Sets whether to draw and enable expanders and indent child rows in
15283  * @tree_view.  When disabled there will be no expanders visible in trees
15284  * and there will be no way to expand and collapse rows by default.  Also
15285  * note that hiding the expanders will disable the default indentation.  You
15286  * can set a custom indentation in this case using
15287  * gtk_tree_view_set_level_indentation().
15288  * This does not have any visible effects for lists.
15289  *
15290  * Since: 2.12
15291  */
15292 void
15293 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15294                                   gboolean     enabled)
15295 {
15296   gboolean was_enabled;
15297
15298   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15299
15300   enabled = enabled != FALSE;
15301   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15302
15303   if (enabled)
15304     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15305   else
15306     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15307
15308   if (enabled != was_enabled)
15309     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15310 }
15311
15312 /**
15313  * gtk_tree_view_get_show_expanders:
15314  * @tree_view: a #GtkTreeView.
15315  *
15316  * Returns whether or not expanders are drawn in @tree_view.
15317  *
15318  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15319  * otherwise.
15320  *
15321  * Since: 2.12
15322  */
15323 gboolean
15324 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15325 {
15326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15327
15328   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15329 }
15330
15331 /**
15332  * gtk_tree_view_set_level_indentation:
15333  * @tree_view: a #GtkTreeView
15334  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15335  *
15336  * Sets the amount of extra indentation for child levels to use in @tree_view
15337  * in addition to the default indentation.  The value should be specified in
15338  * pixels, a value of 0 disables this feature and in this case only the default
15339  * indentation will be used.
15340  * This does not have any visible effects for lists.
15341  *
15342  * Since: 2.12
15343  */
15344 void
15345 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15346                                      gint         indentation)
15347 {
15348   tree_view->priv->level_indentation = indentation;
15349
15350   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15351 }
15352
15353 /**
15354  * gtk_tree_view_get_level_indentation:
15355  * @tree_view: a #GtkTreeView.
15356  *
15357  * Returns the amount, in pixels, of extra indentation for child levels
15358  * in @tree_view.
15359  *
15360  * Return value: the amount of extra indentation for child levels in
15361  * @tree_view.  A return value of 0 means that this feature is disabled.
15362  *
15363  * Since: 2.12
15364  */
15365 gint
15366 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15367 {
15368   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15369
15370   return tree_view->priv->level_indentation;
15371 }
15372
15373 /**
15374  * gtk_tree_view_set_tooltip_row:
15375  * @tree_view: a #GtkTreeView
15376  * @tooltip: a #GtkTooltip
15377  * @path: a #GtkTreePath
15378  *
15379  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15380  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15381  * See also gtk_tooltip_set_tip_area().
15382  *
15383  * Since: 2.12
15384  */
15385 void
15386 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15387                                GtkTooltip  *tooltip,
15388                                GtkTreePath *path)
15389 {
15390   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15391   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15392
15393   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15394 }
15395
15396 /**
15397  * gtk_tree_view_set_tooltip_cell:
15398  * @tree_view: a #GtkTreeView
15399  * @tooltip: a #GtkTooltip
15400  * @path: (allow-none): a #GtkTreePath or %NULL
15401  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15402  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15403  *
15404  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15405  * in common.  For example if @path is %NULL and @column is set, the tip
15406  * area will be set to the full area covered by @column.  See also
15407  * gtk_tooltip_set_tip_area().
15408  *
15409  * Note that if @path is not specified and @cell is set and part of a column
15410  * containing the expander, the tooltip might not show and hide at the correct
15411  * position.  In such cases @path must be set to the current node under the
15412  * mouse cursor for this function to operate correctly.
15413  *
15414  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15415  *
15416  * Since: 2.12
15417  */
15418 void
15419 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15420                                 GtkTooltip        *tooltip,
15421                                 GtkTreePath       *path,
15422                                 GtkTreeViewColumn *column,
15423                                 GtkCellRenderer   *cell)
15424 {
15425   GtkAllocation allocation;
15426   GdkRectangle rect;
15427
15428   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15429   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15430   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15431   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15432
15433   /* Determine x values. */
15434   if (column && cell)
15435     {
15436       GdkRectangle tmp;
15437       gint start, width;
15438
15439       /* We always pass in path here, whether it is NULL or not.
15440        * For cells in expander columns path must be specified so that
15441        * we can correctly account for the indentation.  This also means
15442        * that the tooltip is constrained vertically by the "Determine y
15443        * values" code below; this is not a real problem since cells actually
15444        * don't stretch vertically in constrast to columns.
15445        */
15446       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15447       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15448
15449       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15450                                                          tmp.x + start, 0,
15451                                                          &rect.x, NULL);
15452       rect.width = width;
15453     }
15454   else if (column)
15455     {
15456       GdkRectangle tmp;
15457
15458       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15459       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15460                                                          tmp.x, 0,
15461                                                          &rect.x, NULL);
15462       rect.width = tmp.width;
15463     }
15464   else
15465     {
15466       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15467       rect.x = 0;
15468       rect.width = 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: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15498  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15499  * @iter: (out) (allow-none): 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 }