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

   1 /* gtkiconview.c
   2  * Copyright (C) 2002, 2004  Anders Carlsson <andersca@gnu.org>
   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 #include <config.h>
  21 #include <string.h>
  22
  23 #include <atk/atk.h>
  24
  25 #include <gdk/gdkkeysyms.h>
  26
  27 #include "gtkiconview.h"
  28 #include "gtkcelllayout.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkcellrenderertext.h"
  31 #include "gtkcellrendererpixbuf.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbindings.h"
  34 #include "gtkdnd.h"
  35 #include "gtkmain.h"
  36 #include "gtksignal.h"
  37 #include "gtkintl.h"
  38 #include "gtkaccessible.h"
  39 #include "gtkwindow.h"
  40 #include "gtkentry.h"
  41 #include "gtkcombobox.h"
  42 #include "gtktextbuffer.h"
  43 #include "gtktreednd.h"
  44 #include "gtkprivate.h"
  45 #include "gtkalias.h"
  46
  47 #undef DEBUG_ICON_VIEW
  48
  49 #define SCROLL_EDGE_SIZE 15
  50
  51 #define GTK_ICON_VIEW_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_ICON_VIEW, GtkIconViewPrivate))
  52
  53 typedef struct _GtkIconViewItem GtkIconViewItem;
  54 struct _GtkIconViewItem
  55 {
  56   GtkTreeIter iter;
  57   gint index;
  58
  59   gint row, col;
  60
  61   /* Bounding box */
  62   gint x, y, width, height;
  63
  64   /* Individual cells.
  65    * box[i] is the actual area occupied by cell i,
  66    * before, after are used to calculate the cell
  67    * area relative to the box.
  68    * See gtk_icon_view_get_cell_area().
  69    */
  70   gint n_cells;
  71   GdkRectangle *box;
  72   gint *before;
  73   gint *after;
  74
  75   guint selected : 1;
  76   guint selected_before_rubberbanding : 1;
  77
  78 };
  79
  80 typedef struct _GtkIconViewCellInfo GtkIconViewCellInfo;
  81 struct _GtkIconViewCellInfo
  82 {
  83   GtkCellRenderer *cell;
  84
  85   guint expand : 1;
  86   guint pack : 1;
  87   guint editing : 1;
  88
  89   gint position;
  90
  91   GSList *attributes;
  92
  93   GtkCellLayoutDataFunc func;
  94   gpointer func_data;
  95   GDestroyNotify destroy;
  96 };
  97
  98 typedef struct _GtkIconViewChild GtkIconViewChild;
  99 struct _GtkIconViewChild
 100 {
 101   GtkWidget *widget;
 102   GtkIconViewItem *item;
 103   gint cell;
 104 };
 105
 106 struct _GtkIconViewPrivate
 107 {
 108   gint width, height;
 109
 110   GtkSelectionMode selection_mode;
 111
 112   GdkWindow *bin_window;
 113
 114   GList *children;
 115
 116   GtkTreeModel *model;
 117
 118   GList *items;
 119
 120   GtkAdjustment *hadjustment;
 121   GtkAdjustment *vadjustment;
 122
 123   guint layout_idle_id;
 124
 125   gboolean doing_rubberband;
 126   gint rubberband_x1, rubberband_y1;
 127   gint rubberband_x2, rubberband_y2;
 128
 129   guint scroll_timeout_id;
 130   gint scroll_value_diff;
 131   gint event_last_x, event_last_y;
 132
 133   GtkIconViewItem *anchor_item;
 134   GtkIconViewItem *cursor_item;
 135   GtkIconViewItem *edited_item;
 136   GtkCellEditable *editable;
 137
 138   GtkIconViewItem *last_single_clicked;
 139
 140   GList *cell_list;
 141   guint n_cells;
 142
 143   gint cursor_cell;
 144
 145   GtkOrientation orientation;
 146
 147   gint columns;
 148   gint item_width;
 149   gint spacing;
 150   gint row_spacing;
 151   gint column_spacing;
 152   gint margin;
 153
 154   gint text_column;
 155   gint markup_column;
 156   gint pixbuf_column;
 157
 158   gint pixbuf_cell;
 159   gint text_cell;
 160
 161   /* Drag-and-drop. */
 162   GdkModifierType start_button_mask;
 163   gint pressed_button;
 164   gint press_start_x;
 165   gint press_start_y;
 166
 167   GtkTargetList *source_targets;
 168   GdkDragAction source_actions;
 169
 170   GtkTargetList *dest_targets;
 171   GdkDragAction dest_actions;
 172
 173   GtkTreeRowReference *dest_item;
 174   GtkIconViewDropPosition dest_pos;
 175
 176   /* scroll to */
 177   GtkTreeRowReference *scroll_to_path;
 178   gfloat scroll_to_row_align;
 179   gfloat scroll_to_col_align;
 180   guint scroll_to_use_align : 1;
 181
 182   guint source_set : 1;
 183   guint dest_set : 1;
 184   guint reorderable : 1;
 185   guint empty_view_drop :1;
 186
 187   guint ctrl_pressed : 1;
 188   guint shift_pressed : 1;
 189 };
 190
 191 /* Signals */
 192 enum
 193 {
 194   ITEM_ACTIVATED,
 195   SELECTION_CHANGED,
 196   SELECT_ALL,
 197   UNSELECT_ALL,
 198   SELECT_CURSOR_ITEM,
 199   TOGGLE_CURSOR_ITEM,
 200   MOVE_CURSOR,
 201   ACTIVATE_CURSOR_ITEM,
 202   LAST_SIGNAL
 203 };
 204
 205 /* Properties */
 206 enum
 207 {
 208   PROP_0,
 209   PROP_PIXBUF_COLUMN,
 210   PROP_TEXT_COLUMN,
 211   PROP_MARKUP_COLUMN,
 212   PROP_SELECTION_MODE,
 213   PROP_ORIENTATION,
 214   PROP_MODEL,
 215   PROP_COLUMNS,
 216   PROP_ITEM_WIDTH,
 217   PROP_SPACING,
 218   PROP_ROW_SPACING,
 219   PROP_COLUMN_SPACING,
 220   PROP_MARGIN,
 221   PROP_REORDERABLE
 222 };
 223
 224 /* GObject vfuncs */
 225 static void             gtk_icon_view_cell_layout_init          (GtkCellLayoutIface *iface);
 226 static void             gtk_icon_view_finalize                  (GObject            *object);
 227 static void             gtk_icon_view_set_property              (GObject            *object,
 228                                                                  guint               prop_id,
 229                                                                  const GValue       *value,
 230                                                                  GParamSpec         *pspec);
 231 static void             gtk_icon_view_get_property              (GObject            *object,
 232                                                                  guint               prop_id,
 233                                                                  GValue             *value,
 234                                                                  GParamSpec         *pspec);
 235
 236 /* GtkObject vfuncs */
 237 static void             gtk_icon_view_destroy                   (GtkObject          *object);
 238
 239 /* GtkWidget vfuncs */
 240 static void             gtk_icon_view_realize                   (GtkWidget          *widget);
 241 static void             gtk_icon_view_unrealize                 (GtkWidget          *widget);
 242 static void             gtk_icon_view_style_set                 (GtkWidget        *widget,
 243                                                                  GtkStyle         *previous_style);
 244 static void             gtk_icon_view_state_changed             (GtkWidget        *widget,
 245                                                                  GtkStateType      previous_state);
 246 static void             gtk_icon_view_size_request              (GtkWidget          *widget,
 247                                                                  GtkRequisition     *requisition);
 248 static void             gtk_icon_view_size_allocate             (GtkWidget          *widget,
 249                                                                  GtkAllocation      *allocation);
 250 static gboolean         gtk_icon_view_expose                    (GtkWidget          *widget,
 251                                                                  GdkEventExpose     *expose);
 252 static gboolean         gtk_icon_view_motion                    (GtkWidget          *widget,
 253                                                                  GdkEventMotion     *event);
 254 static gboolean         gtk_icon_view_button_press              (GtkWidget          *widget,
 255                                                                  GdkEventButton     *event);
 256 static gboolean         gtk_icon_view_button_release            (GtkWidget          *widget,
 257                                                                  GdkEventButton     *event);
 258 static gboolean         gtk_icon_view_key_press                 (GtkWidget          *widget,
 259                                                                  GdkEventKey        *event);
 260 static gboolean         gtk_icon_view_key_release               (GtkWidget          *widget,
 261                                                                  GdkEventKey        *event);
 262 static AtkObject       *gtk_icon_view_get_accessible            (GtkWidget          *widget);
 263
 264
 265 /* GtkContainer vfuncs */
 266 static void             gtk_icon_view_remove                    (GtkContainer       *container,
 267                                                                  GtkWidget          *widget);
 268 static void             gtk_icon_view_forall                    (GtkContainer       *container,
 269                                                                  gboolean            include_internals,
 270                                                                  GtkCallback         callback,
 271                                                                  gpointer            callback_data);
 272
 273 /* GtkIconView vfuncs */
 274 static void             gtk_icon_view_set_adjustments           (GtkIconView        *icon_view,
 275                                                                  GtkAdjustment      *hadj,
 276                                                                  GtkAdjustment      *vadj);
 277 static void             gtk_icon_view_real_select_all           (GtkIconView        *icon_view);
 278 static void             gtk_icon_view_real_unselect_all         (GtkIconView        *icon_view);
 279 static void             gtk_icon_view_real_select_cursor_item   (GtkIconView        *icon_view);
 280 static void             gtk_icon_view_real_toggle_cursor_item   (GtkIconView        *icon_view);
 281 static gboolean         gtk_icon_view_real_activate_cursor_item (GtkIconView        *icon_view);
 282
 283  /* Internal functions */
 284 static void                 gtk_icon_view_adjustment_changed             (GtkAdjustment          *adjustment,
 285                                                                           GtkIconView            *icon_view);
 286 static void                 gtk_icon_view_layout                         (GtkIconView            *icon_view);
 287 static void                 gtk_icon_view_paint_item                     (GtkIconView            *icon_view,
 288                                                                           cairo_t *cr,
 289
 290                                                                           GtkIconViewItem        *item,
 291                                                                           GdkRectangle           *area,
 292                                                                           GdkDrawable *drawable,
 293                                                                           gint         x,
 294                                                                           gint         y,
 295                                                                           gboolean     draw_focus);
 296 static void                 gtk_icon_view_paint_rubberband               (GtkIconView            *icon_view,
 297                                                                           cairo_t *cr,
 298                                                                           GdkRectangle           *area);
 299 static void                 gtk_icon_view_queue_draw_path                (GtkIconView *icon_view,
 300                                                                           GtkTreePath *path);
 301 static void                 gtk_icon_view_queue_draw_item                (GtkIconView            *icon_view,
 302                                                                           GtkIconViewItem        *item);
 303 static void                 gtk_icon_view_queue_layout                   (GtkIconView            *icon_view);
 304 static void                 gtk_icon_view_set_cursor_item                (GtkIconView            *icon_view,
 305                                                                           GtkIconViewItem        *item,
 306                                                                           gint                    cursor_cell);
 307 static void                 gtk_icon_view_start_rubberbanding            (GtkIconView            *icon_view,
 308                                                                           gint                    x,
 309                                                                           gint                    y);
 310 static void                 gtk_icon_view_stop_rubberbanding             (GtkIconView            *icon_view);
 311 static void                 gtk_icon_view_update_rubberband_selection    (GtkIconView            *icon_view);
 312 static gboolean             gtk_icon_view_item_hit_test                  (GtkIconView            *icon_view,
 313                                                                           GtkIconViewItem        *item,
 314                                                                           gint                    x,
 315                                                                           gint                    y,
 316                                                                           gint                    width,
 317                                                                           gint                    height);
 318 static gboolean             gtk_icon_view_unselect_all_internal          (GtkIconView            *icon_view);
 319 static void                 gtk_icon_view_calculate_item_size            (GtkIconView            *icon_view,
 320                                                                           GtkIconViewItem        *item);
 321 static void                 gtk_icon_view_calculate_item_size2           (GtkIconView            *icon_view,
 322                                                                           GtkIconViewItem        *item,
 323                                                                           gint                   *max_height);
 324 static void                 gtk_icon_view_update_rubberband              (gpointer                data);
 325 static void                 gtk_icon_view_item_invalidate_size           (GtkIconViewItem        *item);
 326 static void                 gtk_icon_view_invalidate_sizes               (GtkIconView            *icon_view);
 327 static void                 gtk_icon_view_add_move_binding               (GtkBindingSet          *binding_set,
 328                                                                           guint                   keyval,
 329                                                                           guint                   modmask,
 330                                                                           GtkMovementStep         step,
 331                                                                           gint                    count);
 332 static gboolean             gtk_icon_view_real_move_cursor               (GtkIconView            *icon_view,
 333                                                                           GtkMovementStep         step,
 334                                                                           gint                    count);
 335 static void                 gtk_icon_view_move_cursor_up_down            (GtkIconView            *icon_view,
 336                                                                           gint                    count);
 337 static void                 gtk_icon_view_move_cursor_page_up_down       (GtkIconView            *icon_view,
 338                                                                           gint                    count);
 339 static void                 gtk_icon_view_move_cursor_left_right         (GtkIconView            *icon_view,
 340                                                                           gint                    count);
 341 static void                 gtk_icon_view_move_cursor_start_end          (GtkIconView            *icon_view,
 342                                                                           gint                    count);
 343 static void                 gtk_icon_view_scroll_to_item                 (GtkIconView            *icon_view,
 344                                                                           GtkIconViewItem        *item);
 345 static void                 gtk_icon_view_select_item                    (GtkIconView            *icon_view,
 346                                                                           GtkIconViewItem        *item);
 347 static void                 gtk_icon_view_unselect_item                  (GtkIconView            *icon_view,
 348                                                                           GtkIconViewItem        *item);
 349 static gboolean             gtk_icon_view_select_all_between             (GtkIconView            *icon_view,
 350                                                                           GtkIconViewItem        *anchor,
 351                                                                           GtkIconViewItem        *cursor);
 352 static GtkIconViewItem *    gtk_icon_view_get_item_at_coords             (GtkIconView            *icon_view,
 353                                                                           gint                    x,
 354                                                                           gint                    y,
 355                                                                           gboolean                only_in_cell,
 356                                                                           GtkIconViewCellInfo   **cell_at_pos);
 357 static void                 gtk_icon_view_get_cell_area                  (GtkIconView            *icon_view,
 358                                                                           GtkIconViewItem        *item,
 359                                                                           GtkIconViewCellInfo    *cell_info,
 360                                                                           GdkRectangle           *cell_area);
 361 static void                 gtk_icon_view_get_cell_box                   (GtkIconView            *icon_view,
 362                                                                           GtkIconViewItem        *item,
 363                                                                           GtkIconViewCellInfo    *info,
 364                                                                           GdkRectangle           *box);
 365 static GtkIconViewCellInfo *gtk_icon_view_get_cell_info                  (GtkIconView            *icon_view,
 366                                                                           GtkCellRenderer        *renderer);
 367 static void                 gtk_icon_view_set_cell_data                  (GtkIconView            *icon_view,
 368                                                                           GtkIconViewItem        *item);
 369 static void                 gtk_icon_view_cell_layout_pack_start         (GtkCellLayout          *layout,
 370                                                                           GtkCellRenderer        *renderer,
 371                                                                           gboolean                expand);
 372 static void                 gtk_icon_view_cell_layout_pack_end           (GtkCellLayout          *layout,
 373                                                                           GtkCellRenderer        *renderer,
 374                                                                           gboolean                expand);
 375 static void                 gtk_icon_view_cell_layout_add_attribute      (GtkCellLayout          *layout,
 376                                                                           GtkCellRenderer        *renderer,
 377                                                                           const gchar            *attribute,
 378                                                                           gint                    column);
 379 static void                 gtk_icon_view_cell_layout_clear              (GtkCellLayout          *layout);
 380 static void                 gtk_icon_view_cell_layout_clear_attributes   (GtkCellLayout          *layout,
 381                                                                           GtkCellRenderer        *renderer);
 382 static void                 gtk_icon_view_cell_layout_set_cell_data_func (GtkCellLayout          *layout,
 383                                                                           GtkCellRenderer        *cell,
 384                                                                           GtkCellLayoutDataFunc   func,
 385                                                                           gpointer                func_data,
 386                                                                           GDestroyNotify          destroy);
 387 static void                 gtk_icon_view_cell_layout_reorder            (GtkCellLayout          *layout,
 388                                                                           GtkCellRenderer        *cell,
 389                                                                           gint                    position);
 390 static GList *              gtk_icon_view_cell_layout_get_cells          (GtkCellLayout          *layout);
 391
 392 static void                 gtk_icon_view_item_activate_cell             (GtkIconView            *icon_view,
 393                                                                           GtkIconViewItem        *item,
 394                                                                           GtkIconViewCellInfo    *cell_info,
 395                                                                           GdkEvent               *event);
 396 static void                 gtk_icon_view_put                            (GtkIconView            *icon_view,
 397                                                                           GtkWidget              *widget,
 398                                                                           GtkIconViewItem        *item,
 399                                                                           gint                    cell);
 400 static void                 gtk_icon_view_remove_widget                  (GtkCellEditable        *editable,
 401                                                                           GtkIconView            *icon_view);
 402 static void                 gtk_icon_view_start_editing                  (GtkIconView            *icon_view,
 403                                                                           GtkIconViewItem        *item,
 404                                                                           GtkIconViewCellInfo    *cell_info,
 405                                                                           GdkEvent               *event);
 406 static void                 gtk_icon_view_stop_editing                   (GtkIconView            *icon_view,
 407                                                                           gboolean                cancel_editing);
 408
 409 /* Source side drag signals */
 410 static void gtk_icon_view_drag_begin       (GtkWidget        *widget,
 411                                             GdkDragContext   *context);
 412 static void gtk_icon_view_drag_end         (GtkWidget        *widget,
 413                                             GdkDragContext   *context);
 414 static void gtk_icon_view_drag_data_get    (GtkWidget        *widget,
 415                                             GdkDragContext   *context,
 416                                             GtkSelectionData *selection_data,
 417                                             guint             info,
 418                                             guint             time);
 419 static void gtk_icon_view_drag_data_delete (GtkWidget        *widget,
 420                                             GdkDragContext   *context);
 421
 422 /* Target side drag signals */
 423 static void     gtk_icon_view_drag_leave         (GtkWidget        *widget,
 424                                                   GdkDragContext   *context,
 425                                                   guint             time);
 426 static gboolean gtk_icon_view_drag_motion        (GtkWidget        *widget,
 427                                                   GdkDragContext   *context,
 428                                                   gint              x,
 429                                                   gint              y,
 430                                                   guint             time);
 431 static gboolean gtk_icon_view_drag_drop          (GtkWidget        *widget,
 432                                                   GdkDragContext   *context,
 433                                                   gint              x,
 434                                                   gint              y,
 435                                                   guint             time);
 436 static void     gtk_icon_view_drag_data_received (GtkWidget        *widget,
 437                                                   GdkDragContext   *context,
 438                                                   gint              x,
 439                                                   gint              y,
 440                                                   GtkSelectionData *selection_data,
 441                                                   guint             info,
 442                                                   guint             time);
 443 static gboolean gtk_icon_view_maybe_begin_drag   (GtkIconView             *icon_view,
 444                                                   GdkEventMotion          *event);
 445
 446 static void     remove_scroll_timeout            (GtkIconView *icon_view);
 447 static void     clear_dest_info                  (GtkIconView *icon_view);
 448 static void     clear_source_info                (GtkIconView *icon_view);
 449
 450 static void     adjust_wrap_width                (GtkIconView     *icon_view,
 451                                                   GtkIconViewItem *item);
 452
 453 /* GtkBuildable */
 454 static GtkBuildableIface *parent_buildable_iface;
 455 static void     gtk_icon_view_buildable_init             (GtkBuildableIface *iface);
 456 static gboolean gtk_icon_view_buildable_custom_tag_start (GtkBuildable  *buildable,
 457                                                           GtkBuilder    *builder,
 458                                                           GObject       *child,
 459                                                           const gchar   *tagname,
 460                                                           GMarkupParser *parser,
 461                                                           gpointer      *data);
 462 static void     gtk_icon_view_buildable_custom_tag_end   (GtkBuildable  *buildable,
 463                                                           GtkBuilder    *builder,
 464                                                           GObject       *child,
 465                                                           const gchar   *tagname,
 466                                                           gpointer      *data);
 467
 468 static guint icon_view_signals[LAST_SIGNAL] = { 0 };
 469
 470 G_DEFINE_TYPE_WITH_CODE (GtkIconView, gtk_icon_view, GTK_TYPE_CONTAINER,
 471                          G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
 472                                                 gtk_icon_view_cell_layout_init)
 473                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 474                                                 gtk_icon_view_buildable_init))
 475
 476 static void
 477 gtk_icon_view_class_init (GtkIconViewClass *klass)
 478 {
 479   GObjectClass *gobject_class;
 480   GtkObjectClass *object_class;
 481   GtkWidgetClass *widget_class;
 482   GtkContainerClass *container_class;
 483   GtkBindingSet *binding_set;
 484
 485   binding_set = gtk_binding_set_by_class (klass);
 486
 487   g_type_class_add_private (klass, sizeof (GtkIconViewPrivate));
 488
 489   gobject_class = (GObjectClass *) klass;
 490   object_class = (GtkObjectClass *) klass;
 491   widget_class = (GtkWidgetClass *) klass;
 492   container_class = (GtkContainerClass *) klass;
 493
 494   gobject_class->finalize = gtk_icon_view_finalize;
 495   gobject_class->set_property = gtk_icon_view_set_property;
 496   gobject_class->get_property = gtk_icon_view_get_property;
 497
 498   object_class->destroy = gtk_icon_view_destroy;
 499
 500   widget_class->realize = gtk_icon_view_realize;
 501   widget_class->unrealize = gtk_icon_view_unrealize;
 502   widget_class->style_set = gtk_icon_view_style_set;
 503   widget_class->get_accessible = gtk_icon_view_get_accessible;
 504   widget_class->size_request = gtk_icon_view_size_request;
 505   widget_class->size_allocate = gtk_icon_view_size_allocate;
 506   widget_class->expose_event = gtk_icon_view_expose;
 507   widget_class->motion_notify_event = gtk_icon_view_motion;
 508   widget_class->button_press_event = gtk_icon_view_button_press;
 509   widget_class->button_release_event = gtk_icon_view_button_release;
 510   widget_class->key_press_event = gtk_icon_view_key_press;
 511   widget_class->key_release_event = gtk_icon_view_key_release;
 512   widget_class->drag_begin = gtk_icon_view_drag_begin;
 513   widget_class->drag_end = gtk_icon_view_drag_end;
 514   widget_class->drag_data_get = gtk_icon_view_drag_data_get;
 515   widget_class->drag_data_delete = gtk_icon_view_drag_data_delete;
 516   widget_class->drag_leave = gtk_icon_view_drag_leave;
 517   widget_class->drag_motion = gtk_icon_view_drag_motion;
 518   widget_class->drag_drop = gtk_icon_view_drag_drop;
 519   widget_class->drag_data_received = gtk_icon_view_drag_data_received;
 520   widget_class->state_changed = gtk_icon_view_state_changed;
 521
 522   container_class->remove = gtk_icon_view_remove;
 523   container_class->forall = gtk_icon_view_forall;
 524
 525   klass->set_scroll_adjustments = gtk_icon_view_set_adjustments;
 526   klass->select_all = gtk_icon_view_real_select_all;
 527   klass->unselect_all = gtk_icon_view_real_unselect_all;
 528   klass->select_cursor_item = gtk_icon_view_real_select_cursor_item;
 529   klass->toggle_cursor_item = gtk_icon_view_real_toggle_cursor_item;
 530   klass->activate_cursor_item = gtk_icon_view_real_activate_cursor_item;
 531   klass->move_cursor = gtk_icon_view_real_move_cursor;
 532
 533   /* Properties */
 534   /**
 535    * GtkIconView:selection-mode:
 536    *
 537    * The ::selection-mode property specifies the selection mode of
 538    * icon view. If the mode is #GTK_SELECTION_MULTIPLE, rubberband selection
 539    * is enabled, for the other modes, only keyboard selection is possible.
 540    *
 541    * Since: 2.6
 542    */
 543   g_object_class_install_property (gobject_class,
 544                                    PROP_SELECTION_MODE,
 545                                    g_param_spec_enum ("selection-mode",
 546                                                       P_("Selection mode"),
 547                                                       P_("The selection mode"),
 548                                                       GTK_TYPE_SELECTION_MODE,
 549                                                       GTK_SELECTION_SINGLE,
 550                                                       GTK_PARAM_READWRITE));
 551
 552   /**
 553    * GtkIconView:pixbuf-column:
 554    *
 555    * The ::pixbuf-column property contains the number of the model column
 556    * containing the pixbufs which are displayed. The pixbuf column must be
 557    * of type #GDK_TYPE_PIXBUF. Setting this property to -1 turns off the
 558    * display of pixbufs.
 559    *
 560    * Since: 2.6
 561    */
 562   g_object_class_install_property (gobject_class,
 563                                    PROP_PIXBUF_COLUMN,
 564                                    g_param_spec_int ("pixbuf-column",
 565                                                      P_("Pixbuf column"),
 566                                                      P_("Model column used to retrieve the icon pixbuf from"),
 567                                                      -1, G_MAXINT, -1,
 568                                                      GTK_PARAM_READWRITE));
 569
 570   /**
 571    * GtkIconView:text-column:
 572    *
 573    * The ::text-column property contains the number of the model column
 574    * containing the texts which are displayed. The text column must be
 575    * of type #G_TYPE_STRING. If this property and the :markup-column
 576    * property are both set to -1, no texts are displayed.
 577    *
 578    * Since: 2.6
 579    */
 580   g_object_class_install_property (gobject_class,
 581                                    PROP_TEXT_COLUMN,
 582                                    g_param_spec_int ("text-column",
 583                                                      P_("Text column"),
 584                                                      P_("Model column used to retrieve the text from"),
 585                                                      -1, G_MAXINT, -1,
 586                                                      GTK_PARAM_READWRITE));
 587
 588
 589   /**
 590    * GtkIconView:markup-column:
 591    *
 592    * The ::markup-column property contains the number of the model column
 593    * containing markup information to be displayed. The markup column must be
 594    * of type #G_TYPE_STRING. If this property and the :text-column property
 595    * are both set to column numbers, it overrides the text column.
 596    * If both are set to -1, no texts are displayed.
 597    *
 598    * Since: 2.6
 599    */
 600   g_object_class_install_property (gobject_class,
 601                                    PROP_MARKUP_COLUMN,
 602                                    g_param_spec_int ("markup-column",
 603                                                      P_("Markup column"),
 604                                                      P_("Model column used to retrieve the text if using Pango markup"),
 605                                                      -1, G_MAXINT, -1,
 606                                                      GTK_PARAM_READWRITE));
 607
 608   g_object_class_install_property (gobject_class,
 609                                    PROP_MODEL,
 610                                    g_param_spec_object ("model",
 611                                                         P_("Icon View Model"),
 612                                                         P_("The model for the icon view"),
 613                                                         GTK_TYPE_TREE_MODEL,
 614                                                         GTK_PARAM_READWRITE));
 615
 616   /**
 617    * GtkIconView:columns:
 618    *
 619    * The columns property contains the number of the columns in which the
 620    * items should be displayed. If it is -1, the number of columns will
 621    * be chosen automatically to fill the available area.
 622    *
 623    * Since: 2.6
 624    */
 625   g_object_class_install_property (gobject_class,
 626                                    PROP_COLUMNS,
 627                                    g_param_spec_int ("columns",
 628                                                      P_("Number of columns"),
 629                                                      P_("Number of columns to display"),
 630                                                      -1, G_MAXINT, -1,
 631                                                      GTK_PARAM_READWRITE));
 632
 633
 634   /**
 635    * GtkIconView:item-width:
 636    *
 637    * The item-width property specifies the width to use for each item.
 638    * If it is set to -1, the icon view will automatically determine a
 639    * suitable item size.
 640    *
 641    * Since: 2.6
 642    */
 643   g_object_class_install_property (gobject_class,
 644                                    PROP_ITEM_WIDTH,
 645                                    g_param_spec_int ("item-width",
 646                                                      P_("Width for each item"),
 647                                                      P_("The width used for each item"),
 648                                                      -1, G_MAXINT, -1,
 649                                                      GTK_PARAM_READWRITE));
 650
 651   /**
 652    * GtkIconView:spacing:
 653    *
 654    * The spacing property specifies the space which is inserted between
 655    * the cells (i.e. the icon and the text) of an item.
 656    *
 657    * Since: 2.6
 658    */
 659   g_object_class_install_property (gobject_class,
 660                                    PROP_SPACING,
 661                                    g_param_spec_int ("spacing",
 662                                                      P_("Spacing"),
 663                                                      P_("Space which is inserted between cells of an item"),
 664                                                      0, G_MAXINT, 0,
 665                                                      GTK_PARAM_READWRITE));
 666
 667   /**
 668    * GtkIconView:row-spacing:
 669    *
 670    * The row-spacing property specifies the space which is inserted between
 671    * the rows of the icon view.
 672    *
 673    * Since: 2.6
 674    */
 675   g_object_class_install_property (gobject_class,
 676                                    PROP_ROW_SPACING,
 677                                    g_param_spec_int ("row-spacing",
 678                                                      P_("Row Spacing"),
 679                                                      P_("Space which is inserted between grid rows"),
 680                                                      0, G_MAXINT, 6,
 681                                                      GTK_PARAM_READWRITE));
 682
 683   /**
 684    * GtkIconView:column-spacing:
 685    *
 686    * The column-spacing property specifies the space which is inserted between
 687    * the columns of the icon view.
 688    *
 689    * Since: 2.6
 690    */
 691   g_object_class_install_property (gobject_class,
 692                                    PROP_COLUMN_SPACING,
 693                                    g_param_spec_int ("column-spacing",
 694                                                      P_("Column Spacing"),
 695                                                      P_("Space which is inserted between grid columns"),
 696                                                      0, G_MAXINT, 6,
 697                                                      GTK_PARAM_READWRITE));
 698
 699   /**
 700    * GtkIconView:margin:
 701    *
 702    * The margin property specifies the space which is inserted
 703    * at the edges of the icon view.
 704    *
 705    * Since: 2.6
 706    */
 707   g_object_class_install_property (gobject_class,
 708                                    PROP_MARGIN,
 709                                    g_param_spec_int ("margin",
 710                                                      P_("Margin"),
 711                                                      P_("Space which is inserted at the edges of the icon view"),
 712                                                      0, G_MAXINT, 6,
 713                                                      GTK_PARAM_READWRITE));
 714
 715
 716   /**
 717    * GtkIconView:orientation:
 718    *
 719    * The orientation property specifies how the cells (i.e. the icon and
 720    * the text) of the item are positioned relative to each other.
 721    *
 722    * Since: 2.6
 723    */
 724   g_object_class_install_property (gobject_class,
 725                                    PROP_ORIENTATION,
 726                                    g_param_spec_enum ("orientation",
 727                                                       P_("Orientation"),
 728                                                       P_("How the text and icon of each item are positioned relative to each other"),
 729                                                       GTK_TYPE_ORIENTATION,
 730                                                       GTK_ORIENTATION_VERTICAL,
 731                                                       GTK_PARAM_READWRITE));
 732
 733   /**
 734    * GtkIconView:reorderable:
 735    *
 736    * The reorderable property specifies if the items can be reordered
 737    * by DND.
 738    *
 739    * Since: 2.8
 740    */
 741   g_object_class_install_property (gobject_class,
 742                                    PROP_REORDERABLE,
 743                                    g_param_spec_boolean ("reorderable",
 744                                                          P_("Reorderable"),
 745                                                          P_("View is reorderable"),
 746                                                          FALSE,
 747                                                          G_PARAM_READWRITE));
 748
 749   /* Style properties */
 750   gtk_widget_class_install_style_property (widget_class,
 751                                            g_param_spec_boxed ("selection-box-color",
 752                                                                P_("Selection Box Color"),
 753                                                                P_("Color of the selection box"),
 754                                                                GDK_TYPE_COLOR,
 755                                                                GTK_PARAM_READABLE));
 756
 757   gtk_widget_class_install_style_property (widget_class,
 758                                            g_param_spec_uchar ("selection-box-alpha",
 759                                                                P_("Selection Box Alpha"),
 760                                                                P_("Opacity of the selection box"),
 761                                                                0, 0xff,
 762                                                                0x40,
 763                                                                GTK_PARAM_READABLE));
 764
 765   /* Signals */
 766   widget_class->set_scroll_adjustments_signal =
 767     g_signal_new (I_("set_scroll_adjustments"),
 768                   G_TYPE_FROM_CLASS (gobject_class),
 769                   G_SIGNAL_RUN_LAST,
 770                   G_STRUCT_OFFSET (GtkIconViewClass, set_scroll_adjustments),
 771                   NULL, NULL,
 772                   _gtk_marshal_VOID__OBJECT_OBJECT,
 773                   G_TYPE_NONE, 2,
 774                   GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
 775
 776   icon_view_signals[ITEM_ACTIVATED] =
 777     g_signal_new (I_("item_activated"),
 778                   G_TYPE_FROM_CLASS (gobject_class),
 779                   G_SIGNAL_RUN_LAST,
 780                   G_STRUCT_OFFSET (GtkIconViewClass, item_activated),
 781                   NULL, NULL,
 782                   g_cclosure_marshal_VOID__BOXED,
 783                   G_TYPE_NONE, 1,
 784                   GTK_TYPE_TREE_PATH);
 785
 786   icon_view_signals[SELECTION_CHANGED] =
 787     g_signal_new (I_("selection-changed"),
 788                   G_TYPE_FROM_CLASS (gobject_class),
 789                   G_SIGNAL_RUN_FIRST,
 790                   G_STRUCT_OFFSET (GtkIconViewClass, selection_changed),
 791                   NULL, NULL,
 792                   g_cclosure_marshal_VOID__VOID,
 793                   G_TYPE_NONE, 0);
 794
 795   icon_view_signals[SELECT_ALL] =
 796     g_signal_new (I_("select_all"),
 797                   G_TYPE_FROM_CLASS (gobject_class),
 798                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 799                   G_STRUCT_OFFSET (GtkIconViewClass, select_all),
 800                   NULL, NULL,
 801                   g_cclosure_marshal_VOID__VOID,
 802                   G_TYPE_NONE, 0);
 803
 804   icon_view_signals[UNSELECT_ALL] =
 805     g_signal_new (I_("unselect_all"),
 806                   G_TYPE_FROM_CLASS (gobject_class),
 807                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 808                   G_STRUCT_OFFSET (GtkIconViewClass, unselect_all),
 809                   NULL, NULL,
 810                   g_cclosure_marshal_VOID__VOID,
 811                   G_TYPE_NONE, 0);
 812
 813   icon_view_signals[SELECT_CURSOR_ITEM] =
 814     g_signal_new (I_("select_cursor_item"),
 815                   G_TYPE_FROM_CLASS (gobject_class),
 816                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 817                   G_STRUCT_OFFSET (GtkIconViewClass, select_cursor_item),
 818                   NULL, NULL,
 819                   g_cclosure_marshal_VOID__VOID,
 820                   G_TYPE_NONE, 0);
 821
 822   icon_view_signals[TOGGLE_CURSOR_ITEM] =
 823     g_signal_new (I_("toggle_cursor_item"),
 824                   G_TYPE_FROM_CLASS (gobject_class),
 825                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 826                   G_STRUCT_OFFSET (GtkIconViewClass, toggle_cursor_item),
 827                   NULL, NULL,
 828                   g_cclosure_marshal_VOID__VOID,
 829                   G_TYPE_NONE, 0);
 830
 831   icon_view_signals[ACTIVATE_CURSOR_ITEM] =
 832     g_signal_new (I_("activate_cursor_item"),
 833                   G_TYPE_FROM_CLASS (gobject_class),
 834                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 835                   G_STRUCT_OFFSET (GtkIconViewClass, activate_cursor_item),
 836                   NULL, NULL,
 837                   _gtk_marshal_BOOLEAN__VOID,
 838                   G_TYPE_BOOLEAN, 0);
 839
 840   icon_view_signals[MOVE_CURSOR] =
 841     g_signal_new (I_("move_cursor"),
 842                   G_TYPE_FROM_CLASS (gobject_class),
 843                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 844                   G_STRUCT_OFFSET (GtkIconViewClass, move_cursor),
 845                   NULL, NULL,
 846                   _gtk_marshal_BOOLEAN__ENUM_INT,
 847                   G_TYPE_BOOLEAN, 2,
 848                   GTK_TYPE_MOVEMENT_STEP,
 849                   G_TYPE_INT);
 850
 851   /* Key bindings */
 852   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK,
 853                                 "select_all", 0);
 854   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
 855                                 "unselect_all", 0);
 856   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK,
 857                                 "toggle_cursor_item", 0);
 858
 859   gtk_binding_entry_add_signal (binding_set, GDK_space, 0,
 860                                 "activate_cursor_item", 0);
 861   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0,
 862                                 "activate_cursor_item", 0);
 863   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0,
 864                                 "activate_cursor_item", 0);
 865   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0,
 866                                 "activate_cursor_item", 0);
 867
 868   gtk_icon_view_add_move_binding (binding_set, GDK_Up, 0,
 869                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 870   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Up, 0,
 871                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 872
 873   gtk_icon_view_add_move_binding (binding_set, GDK_Down, 0,
 874                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 875   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Down, 0,
 876                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 877
 878   gtk_icon_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 879                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 880
 881   gtk_icon_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 882                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 883
 884   gtk_icon_view_add_move_binding (binding_set, GDK_Home, 0,
 885                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 886   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Home, 0,
 887                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 888
 889   gtk_icon_view_add_move_binding (binding_set, GDK_End, 0,
 890                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 891   gtk_icon_view_add_move_binding (binding_set, GDK_KP_End, 0,
 892                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 893
 894   gtk_icon_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 895                                   GTK_MOVEMENT_PAGES, -1);
 896   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0,
 897                                   GTK_MOVEMENT_PAGES, -1);
 898
 899   gtk_icon_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 900                                   GTK_MOVEMENT_PAGES, 1);
 901   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0,
 902                                   GTK_MOVEMENT_PAGES, 1);
 903
 904   gtk_icon_view_add_move_binding (binding_set, GDK_Right, 0,
 905                                   GTK_MOVEMENT_VISUAL_POSITIONS, 1);
 906   gtk_icon_view_add_move_binding (binding_set, GDK_Left, 0,
 907                                   GTK_MOVEMENT_VISUAL_POSITIONS, -1);
 908
 909   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Right, 0,
 910                                   GTK_MOVEMENT_VISUAL_POSITIONS, 1);
 911   gtk_icon_view_add_move_binding (binding_set, GDK_KP_Left, 0,
 912                                   GTK_MOVEMENT_VISUAL_POSITIONS, -1);
 913 }
 914
 915 static void
 916 gtk_icon_view_buildable_init (GtkBuildableIface *iface)
 917 {
 918   parent_buildable_iface = g_type_interface_peek_parent (iface);
 919   iface->add_child = _gtk_cell_layout_buildable_add_child;
 920   iface->custom_tag_start = gtk_icon_view_buildable_custom_tag_start;
 921   iface->custom_tag_end = gtk_icon_view_buildable_custom_tag_end;
 922 }
 923
 924 static void
 925 gtk_icon_view_cell_layout_init (GtkCellLayoutIface *iface)
 926 {
 927   iface->pack_start = gtk_icon_view_cell_layout_pack_start;
 928   iface->pack_end = gtk_icon_view_cell_layout_pack_end;
 929   iface->clear = gtk_icon_view_cell_layout_clear;
 930   iface->add_attribute = gtk_icon_view_cell_layout_add_attribute;
 931   iface->set_cell_data_func = gtk_icon_view_cell_layout_set_cell_data_func;
 932   iface->clear_attributes = gtk_icon_view_cell_layout_clear_attributes;
 933   iface->reorder = gtk_icon_view_cell_layout_reorder;
 934   iface->get_cells = gtk_icon_view_cell_layout_get_cells;
 935 }
 936
 937 static void
 938 gtk_icon_view_init (GtkIconView *icon_view)
 939 {
 940   icon_view->priv = GTK_ICON_VIEW_GET_PRIVATE (icon_view);
 941
 942   icon_view->priv->width = 0;
 943   icon_view->priv->height = 0;
 944   icon_view->priv->selection_mode = GTK_SELECTION_SINGLE;
 945   icon_view->priv->pressed_button = -1;
 946   icon_view->priv->press_start_x = -1;
 947   icon_view->priv->press_start_y = -1;
 948   icon_view->priv->text_column = -1;
 949   icon_view->priv->markup_column = -1;
 950   icon_view->priv->pixbuf_column = -1;
 951   icon_view->priv->text_cell = -1;
 952   icon_view->priv->pixbuf_cell = -1;
 953
 954   GTK_WIDGET_SET_FLAGS (icon_view, GTK_CAN_FOCUS);
 955
 956   gtk_icon_view_set_adjustments (icon_view, NULL, NULL);
 957
 958   icon_view->priv->cell_list = NULL;
 959   icon_view->priv->n_cells = 0;
 960   icon_view->priv->cursor_cell = -1;
 961
 962   icon_view->priv->orientation = GTK_ORIENTATION_VERTICAL;
 963
 964   icon_view->priv->columns = -1;
 965   icon_view->priv->item_width = -1;
 966   icon_view->priv->spacing = 0;
 967   icon_view->priv->row_spacing = 6;
 968   icon_view->priv->column_spacing = 6;
 969   icon_view->priv->margin = 6;
 970 }
 971
 972 static void
 973 gtk_icon_view_destroy (GtkObject *object)
 974 {
 975   GtkIconView *icon_view;
 976
 977   icon_view = GTK_ICON_VIEW (object);
 978
 979   gtk_icon_view_stop_editing (icon_view, TRUE);
 980
 981   gtk_icon_view_set_model (icon_view, NULL);
 982
 983   if (icon_view->priv->layout_idle_id != 0)
 984     {
 985       g_source_remove (icon_view->priv->layout_idle_id);
 986       icon_view->priv->layout_idle_id = 0;
 987     }
 988
 989   if (icon_view->priv->scroll_to_path != NULL)
 990     {
 991       gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
 992       icon_view->priv->scroll_to_path = NULL;
 993     }
 994
 995   remove_scroll_timeout (icon_view);
 996
 997   if (icon_view->priv->hadjustment != NULL)
 998     {
 999       g_object_unref (icon_view->priv->hadjustment);
1000       icon_view->priv->hadjustment = NULL;
1001     }
1002
1003   if (icon_view->priv->vadjustment != NULL)
1004     {
1005       g_object_unref (icon_view->priv->vadjustment);
1006       icon_view->priv->vadjustment = NULL;
1007     }
1008
1009   clear_dest_info (icon_view);
1010   clear_source_info (icon_view);
1011
1012   (* GTK_OBJECT_CLASS (gtk_icon_view_parent_class)->destroy) (object);
1013 }
1014
1015 /* GObject methods */
1016 static void
1017 gtk_icon_view_finalize (GObject *object)
1018 {
1019   gtk_icon_view_cell_layout_clear (GTK_CELL_LAYOUT (object));
1020
1021   (* G_OBJECT_CLASS (gtk_icon_view_parent_class)->finalize) (object);
1022 }
1023
1024
1025 static void
1026 gtk_icon_view_set_property (GObject      *object,
1027                             guint         prop_id,
1028                             const GValue *value,
1029                             GParamSpec   *pspec)
1030 {
1031   GtkIconView *icon_view;
1032
1033   icon_view = GTK_ICON_VIEW (object);
1034
1035   switch (prop_id)
1036     {
1037     case PROP_SELECTION_MODE:
1038       gtk_icon_view_set_selection_mode (icon_view, g_value_get_enum (value));
1039       break;
1040     case PROP_PIXBUF_COLUMN:
1041       gtk_icon_view_set_pixbuf_column (icon_view, g_value_get_int (value));
1042       break;
1043     case PROP_TEXT_COLUMN:
1044       gtk_icon_view_set_text_column (icon_view, g_value_get_int (value));
1045       break;
1046     case PROP_MARKUP_COLUMN:
1047       gtk_icon_view_set_markup_column (icon_view, g_value_get_int (value));
1048       break;
1049     case PROP_MODEL:
1050       gtk_icon_view_set_model (icon_view, g_value_get_object (value));
1051       break;
1052     case PROP_ORIENTATION:
1053       gtk_icon_view_set_orientation (icon_view, g_value_get_enum (value));
1054       break;
1055     case PROP_COLUMNS:
1056       gtk_icon_view_set_columns (icon_view, g_value_get_int (value));
1057       break;
1058     case PROP_ITEM_WIDTH:
1059       gtk_icon_view_set_item_width (icon_view, g_value_get_int (value));
1060       break;
1061     case PROP_SPACING:
1062       gtk_icon_view_set_spacing (icon_view, g_value_get_int (value));
1063       break;
1064     case PROP_ROW_SPACING:
1065       gtk_icon_view_set_row_spacing (icon_view, g_value_get_int (value));
1066       break;
1067     case PROP_COLUMN_SPACING:
1068       gtk_icon_view_set_column_spacing (icon_view, g_value_get_int (value));
1069       break;
1070     case PROP_MARGIN:
1071       gtk_icon_view_set_margin (icon_view, g_value_get_int (value));
1072       break;
1073     case PROP_REORDERABLE:
1074       gtk_icon_view_set_reorderable (icon_view, g_value_get_boolean (value));
1075       break;
1076
1077     default:
1078       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1079       break;
1080     }
1081 }
1082
1083 static void
1084 gtk_icon_view_get_property (GObject      *object,
1085                             guint         prop_id,
1086                             GValue       *value,
1087                             GParamSpec   *pspec)
1088 {
1089   GtkIconView *icon_view;
1090
1091   icon_view = GTK_ICON_VIEW (object);
1092
1093   switch (prop_id)
1094     {
1095     case PROP_SELECTION_MODE:
1096       g_value_set_enum (value, icon_view->priv->selection_mode);
1097       break;
1098     case PROP_PIXBUF_COLUMN:
1099       g_value_set_int (value, icon_view->priv->pixbuf_column);
1100       break;
1101     case PROP_TEXT_COLUMN:
1102       g_value_set_int (value, icon_view->priv->text_column);
1103       break;
1104     case PROP_MARKUP_COLUMN:
1105       g_value_set_int (value, icon_view->priv->markup_column);
1106       break;
1107     case PROP_MODEL:
1108       g_value_set_object (value, icon_view->priv->model);
1109       break;
1110     case PROP_ORIENTATION:
1111       g_value_set_enum (value, icon_view->priv->orientation);
1112       break;
1113     case PROP_COLUMNS:
1114       g_value_set_int (value, icon_view->priv->columns);
1115       break;
1116     case PROP_ITEM_WIDTH:
1117       g_value_set_int (value, icon_view->priv->item_width);
1118       break;
1119     case PROP_SPACING:
1120       g_value_set_int (value, icon_view->priv->spacing);
1121       break;
1122     case PROP_ROW_SPACING:
1123       g_value_set_int (value, icon_view->priv->row_spacing);
1124       break;
1125     case PROP_COLUMN_SPACING:
1126       g_value_set_int (value, icon_view->priv->column_spacing);
1127       break;
1128     case PROP_MARGIN:
1129       g_value_set_int (value, icon_view->priv->margin);
1130       break;
1131     case PROP_REORDERABLE:
1132       g_value_set_boolean (value, icon_view->priv->reorderable);
1133       break;
1134
1135     default:
1136       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1137       break;
1138     }
1139 }
1140
1141 /* GtkWidget signals */
1142 static void
1143 gtk_icon_view_realize (GtkWidget *widget)
1144 {
1145   GtkIconView *icon_view;
1146   GdkWindowAttr attributes;
1147   gint attributes_mask;
1148
1149   icon_view = GTK_ICON_VIEW (widget);
1150
1151   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1152
1153   /* Make the main, clipping window */
1154   attributes.window_type = GDK_WINDOW_CHILD;
1155   attributes.x = widget->allocation.x;
1156   attributes.y = widget->allocation.y;
1157   attributes.width = widget->allocation.width;
1158   attributes.height = widget->allocation.height;
1159   attributes.wclass = GDK_INPUT_OUTPUT;
1160   attributes.visual = gtk_widget_get_visual (widget);
1161   attributes.colormap = gtk_widget_get_colormap (widget);
1162   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1163
1164   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1165
1166   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1167                                    &attributes, attributes_mask);
1168   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1169   gdk_window_set_user_data (widget->window, widget);
1170
1171   /* Make the window for the icon view */
1172   attributes.x = 0;
1173   attributes.y = 0;
1174   attributes.width = MAX (icon_view->priv->width, widget->allocation.width);
1175   attributes.height = MAX (icon_view->priv->height, widget->allocation.height);
1176   attributes.event_mask = (GDK_EXPOSURE_MASK |
1177                            GDK_SCROLL_MASK |
1178                            GDK_POINTER_MOTION_MASK |
1179                            GDK_BUTTON_PRESS_MASK |
1180                            GDK_BUTTON_RELEASE_MASK |
1181                            GDK_KEY_PRESS_MASK |
1182                            GDK_KEY_RELEASE_MASK) |
1183     gtk_widget_get_events (widget);
1184
1185   icon_view->priv->bin_window = gdk_window_new (widget->window,
1186                                                 &attributes, attributes_mask);
1187   gdk_window_set_user_data (icon_view->priv->bin_window, widget);
1188
1189   widget->style = gtk_style_attach (widget->style, widget->window);
1190   gdk_window_set_background (icon_view->priv->bin_window, &widget->style->base[widget->state]);
1191
1192   gdk_window_show (icon_view->priv->bin_window);
1193 }
1194
1195 static void
1196 gtk_icon_view_unrealize (GtkWidget *widget)
1197 {
1198   GtkIconView *icon_view;
1199
1200   icon_view = GTK_ICON_VIEW (widget);
1201
1202   gdk_window_set_user_data (icon_view->priv->bin_window, NULL);
1203   gdk_window_destroy (icon_view->priv->bin_window);
1204   icon_view->priv->bin_window = NULL;
1205
1206   /* GtkWidget::unrealize destroys children and widget->window */
1207   if (GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->unrealize)
1208     (* GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->unrealize) (widget);
1209 }
1210
1211 static void
1212 gtk_icon_view_state_changed (GtkWidget      *widget,
1213                              GtkStateType    previous_state)
1214 {
1215   GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1216
1217   if (GTK_WIDGET_REALIZED (widget))
1218     {
1219       gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1220       gdk_window_set_background (icon_view->priv->bin_window, &widget->style->base[widget->state]);
1221     }
1222
1223   gtk_widget_queue_draw (widget);
1224 }
1225
1226 static void
1227 gtk_icon_view_style_set (GtkWidget *widget,
1228                          GtkStyle *previous_style)
1229 {
1230   GtkIconView *icon_view;
1231
1232   g_return_if_fail (GTK_IS_ICON_VIEW (widget));
1233
1234   icon_view = GTK_ICON_VIEW (widget);
1235
1236   if (GTK_WIDGET_REALIZED (widget))
1237     {
1238       gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1239       gdk_window_set_background (icon_view->priv->bin_window, &widget->style->base[widget->state]);
1240     }
1241
1242   gtk_widget_queue_resize (widget);
1243 }
1244
1245 static void
1246 gtk_icon_view_size_request (GtkWidget      *widget,
1247                             GtkRequisition *requisition)
1248 {
1249   GtkIconView *icon_view;
1250   GList *tmp_list;
1251
1252   icon_view = GTK_ICON_VIEW (widget);
1253
1254   requisition->width = icon_view->priv->width;
1255   requisition->height = icon_view->priv->height;
1256
1257   tmp_list = icon_view->priv->children;
1258
1259   while (tmp_list)
1260     {
1261       GtkIconViewChild *child = tmp_list->data;
1262       GtkRequisition child_requisition;
1263
1264       tmp_list = tmp_list->next;
1265
1266       if (GTK_WIDGET_VISIBLE (child->widget))
1267         gtk_widget_size_request (child->widget, &child_requisition);
1268     }
1269 }
1270
1271 static void
1272 gtk_icon_view_allocate_children (GtkIconView *icon_view)
1273 {
1274   GList *list;
1275
1276   for (list = icon_view->priv->children; list; list = list->next)
1277     {
1278       GtkIconViewChild *child = list->data;
1279       GtkAllocation allocation;
1280
1281       /* totally ignore our child's requisition */
1282       if (child->cell < 0)
1283         {
1284           allocation.x = child->item->x;
1285           allocation.y = child->item->y;
1286           allocation.width = child->item->width;
1287           allocation.height = child->item->height;
1288         }
1289       else
1290         {
1291           GdkRectangle *box = &child->item->box[child->cell];
1292
1293           allocation.x = box->x;
1294           allocation.y = box->y;
1295           allocation.width = box->width;
1296           allocation.height = box->height;
1297         }
1298
1299       gtk_widget_size_allocate (child->widget, &allocation);
1300     }
1301 }
1302
1303 static void
1304 gtk_icon_view_size_allocate (GtkWidget      *widget,
1305                              GtkAllocation  *allocation)
1306 {
1307   GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1308
1309   GtkAdjustment *hadjustment, *vadjustment;
1310
1311   widget->allocation = *allocation;
1312
1313   if (GTK_WIDGET_REALIZED (widget))
1314     {
1315       gdk_window_move_resize (widget->window,
1316                               allocation->x, allocation->y,
1317                               allocation->width, allocation->height);
1318       gdk_window_resize (icon_view->priv->bin_window,
1319                          MAX (icon_view->priv->width, allocation->width),
1320                          MAX (icon_view->priv->height, allocation->height));
1321     }
1322
1323   gtk_icon_view_layout (icon_view);
1324
1325   gtk_icon_view_allocate_children (icon_view);
1326
1327   hadjustment = icon_view->priv->hadjustment;
1328   vadjustment = icon_view->priv->vadjustment;
1329
1330   hadjustment->page_size = allocation->width;
1331   hadjustment->page_increment = allocation->width * 0.9;
1332   hadjustment->step_increment = allocation->width * 0.1;
1333   hadjustment->lower = 0;
1334   hadjustment->upper = MAX (allocation->width, icon_view->priv->width);
1335
1336   if (hadjustment->value > hadjustment->upper - hadjustment->page_size)
1337     gtk_adjustment_set_value (hadjustment, MAX (0, hadjustment->upper - hadjustment->page_size));
1338
1339   vadjustment->page_size = allocation->height;
1340   vadjustment->page_increment = allocation->height * 0.9;
1341   vadjustment->step_increment = allocation->height * 0.1;
1342   vadjustment->lower = 0;
1343   vadjustment->upper = MAX (allocation->height, icon_view->priv->height);
1344
1345   if (vadjustment->value > vadjustment->upper - vadjustment->page_size)
1346     gtk_adjustment_set_value (vadjustment, MAX (0, vadjustment->upper - vadjustment->page_size));
1347
1348   if (GTK_WIDGET_REALIZED (widget) &&
1349       icon_view->priv->scroll_to_path)
1350     {
1351       GtkTreePath *path;
1352       path = gtk_tree_row_reference_get_path (icon_view->priv->scroll_to_path);
1353       gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
1354       icon_view->priv->scroll_to_path = NULL;
1355
1356       gtk_icon_view_scroll_to_path (icon_view, path,
1357                                     icon_view->priv->scroll_to_use_align,
1358                                     icon_view->priv->scroll_to_row_align,
1359                                     icon_view->priv->scroll_to_col_align);
1360       gtk_tree_path_free (path);
1361     }
1362   else
1363     {
1364       gtk_adjustment_changed (hadjustment);
1365       gtk_adjustment_changed (vadjustment);
1366     }
1367 }
1368
1369 static gboolean
1370 gtk_icon_view_expose (GtkWidget *widget,
1371                       GdkEventExpose *expose)
1372 {
1373   GtkIconView *icon_view;
1374   GList *icons;
1375   cairo_t *cr;
1376   GtkTreePath *path;
1377   gint dest_index;
1378   GtkIconViewDropPosition dest_pos;
1379   GtkIconViewItem *dest_item = NULL;
1380
1381   icon_view = GTK_ICON_VIEW (widget);
1382
1383   if (expose->window != icon_view->priv->bin_window)
1384     return FALSE;
1385
1386   cr = gdk_cairo_create (icon_view->priv->bin_window);
1387   cairo_set_line_width (cr, 1.);
1388
1389   gtk_icon_view_get_drag_dest_item (icon_view, &path, &dest_pos);
1390
1391   if (path)
1392     {
1393       dest_index = gtk_tree_path_get_indices (path)[0];
1394       gtk_tree_path_free (path);
1395     }
1396   else
1397     dest_index = -1;
1398
1399   for (icons = icon_view->priv->items; icons; icons = icons->next)
1400     {
1401       GtkIconViewItem *item = icons->data;
1402       GdkRectangle area;
1403
1404       area.x = item->x;
1405       area.y = item->y;
1406       area.width = item->width;
1407       area.height = item->height;
1408
1409       if (gdk_region_rect_in (expose->region, &area) == GDK_OVERLAP_RECTANGLE_OUT)
1410         continue;
1411
1412       gtk_icon_view_paint_item (icon_view, cr, item, &expose->area,
1413                                 icon_view->priv->bin_window,
1414                                 item->x, item->y, TRUE);
1415
1416       if (dest_index == item->index)
1417         dest_item = item;
1418     }
1419
1420   if (dest_item)
1421     {
1422       switch (dest_pos)
1423         {
1424         case GTK_ICON_VIEW_DROP_INTO:
1425           gtk_paint_focus (widget->style,
1426                            icon_view->priv->bin_window,
1427                            GTK_WIDGET_STATE (widget),
1428                            NULL,
1429                            widget,
1430                            "iconview-drop-indicator",
1431                            dest_item->x, dest_item->y,
1432                            dest_item->width, dest_item->height);
1433           break;
1434         case GTK_ICON_VIEW_DROP_ABOVE:
1435           gtk_paint_focus (widget->style,
1436                            icon_view->priv->bin_window,
1437                            GTK_WIDGET_STATE (widget),
1438                            NULL,
1439                            widget,
1440                            "iconview-drop-indicator",
1441                            dest_item->x, dest_item->y - 1,
1442                            dest_item->width, 2);
1443           break;
1444         case GTK_ICON_VIEW_DROP_LEFT:
1445           gtk_paint_focus (widget->style,
1446                            icon_view->priv->bin_window,
1447                            GTK_WIDGET_STATE (widget),
1448                            NULL,
1449                            widget,
1450                            "iconview-drop-indicator",
1451                            dest_item->x - 1, dest_item->y,
1452                            2, dest_item->height);
1453           break;
1454         case GTK_ICON_VIEW_DROP_BELOW:
1455           gtk_paint_focus (widget->style,
1456                            icon_view->priv->bin_window,
1457                            GTK_WIDGET_STATE (widget),
1458                            NULL,
1459                            widget,
1460                            "iconview-drop-indicator",
1461                            dest_item->x, dest_item->y + dest_item->height - 1,
1462                            dest_item->width, 2);
1463           break;
1464         case GTK_ICON_VIEW_DROP_RIGHT:
1465           gtk_paint_focus (widget->style,
1466                            icon_view->priv->bin_window,
1467                            GTK_WIDGET_STATE (widget),
1468                            NULL,
1469                            widget,
1470                            "iconview-drop-indicator",
1471                            dest_item->x + dest_item->width - 1, dest_item->y,
1472                            2, dest_item->height);
1473         case GTK_ICON_VIEW_NO_DROP: ;
1474           break;
1475         }
1476     }
1477
1478   if (icon_view->priv->doing_rubberband)
1479     {
1480       GdkRectangle *rectangles;
1481       gint n_rectangles;
1482
1483       gdk_region_get_rectangles (expose->region,
1484                                  &rectangles,
1485                                  &n_rectangles);
1486
1487       while (n_rectangles--)
1488         gtk_icon_view_paint_rubberband (icon_view, cr, &rectangles[n_rectangles]);
1489
1490       g_free (rectangles);
1491     }
1492
1493   cairo_destroy (cr);
1494
1495   (* GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->expose_event) (widget, expose);
1496
1497   return TRUE;
1498 }
1499
1500 static gboolean
1501 rubberband_scroll_timeout (gpointer data)
1502 {
1503   GtkIconView *icon_view;
1504   gdouble value;
1505
1506   icon_view = data;
1507
1508   value = MIN (icon_view->priv->vadjustment->value +
1509                icon_view->priv->scroll_value_diff,
1510                icon_view->priv->vadjustment->upper -
1511                icon_view->priv->vadjustment->page_size);
1512
1513   gtk_adjustment_set_value (icon_view->priv->vadjustment, value);
1514
1515   gtk_icon_view_update_rubberband (icon_view);
1516
1517   return TRUE;
1518 }
1519
1520 static gboolean
1521 gtk_icon_view_motion (GtkWidget      *widget,
1522                       GdkEventMotion *event)
1523 {
1524   GtkIconView *icon_view;
1525   gint abs_y;
1526
1527   icon_view = GTK_ICON_VIEW (widget);
1528
1529   gtk_icon_view_maybe_begin_drag (icon_view, event);
1530
1531   if (icon_view->priv->doing_rubberband)
1532     {
1533       gtk_icon_view_update_rubberband (widget);
1534
1535       abs_y = event->y - icon_view->priv->height *
1536         (icon_view->priv->vadjustment->value /
1537          (icon_view->priv->vadjustment->upper -
1538           icon_view->priv->vadjustment->lower));
1539
1540       if (abs_y < 0 || abs_y > widget->allocation.height)
1541         {
1542           if (abs_y < 0)
1543             icon_view->priv->scroll_value_diff = abs_y;
1544           else
1545             icon_view->priv->scroll_value_diff = abs_y - widget->allocation.height;
1546
1547           icon_view->priv->event_last_x = event->x;
1548           icon_view->priv->event_last_y = event->y;
1549
1550           if (icon_view->priv->scroll_timeout_id == 0)
1551             icon_view->priv->scroll_timeout_id = gdk_threads_add_timeout (30, rubberband_scroll_timeout,
1552                                                                 icon_view);
1553         }
1554       else
1555         remove_scroll_timeout (icon_view);
1556     }
1557
1558   return TRUE;
1559 }
1560
1561 static void
1562 gtk_icon_view_remove (GtkContainer *container,
1563                       GtkWidget    *widget)
1564 {
1565   GtkIconView *icon_view;
1566   GtkIconViewChild *child = NULL;
1567   GList *tmp_list;
1568
1569   icon_view = GTK_ICON_VIEW (container);
1570
1571   tmp_list = icon_view->priv->children;
1572   while (tmp_list)
1573     {
1574       child = tmp_list->data;
1575       if (child->widget == widget)
1576         {
1577           gtk_widget_unparent (widget);
1578
1579           icon_view->priv->children = g_list_remove_link (icon_view->priv->children, tmp_list);
1580           g_list_free_1 (tmp_list);
1581           g_free (child);
1582           return;
1583         }
1584
1585       tmp_list = tmp_list->next;
1586     }
1587 }
1588
1589 static void
1590 gtk_icon_view_forall (GtkContainer *container,
1591                       gboolean      include_internals,
1592                       GtkCallback   callback,
1593                       gpointer      callback_data)
1594 {
1595   GtkIconView *icon_view;
1596   GtkIconViewChild *child = NULL;
1597   GList *tmp_list;
1598
1599   icon_view = GTK_ICON_VIEW (container);
1600
1601   tmp_list = icon_view->priv->children;
1602   while (tmp_list)
1603     {
1604       child = tmp_list->data;
1605       tmp_list = tmp_list->next;
1606
1607       (* callback) (child->widget, callback_data);
1608     }
1609 }
1610
1611 static void
1612 gtk_icon_view_item_activate_cell (GtkIconView         *icon_view,
1613                                   GtkIconViewItem     *item,
1614                                   GtkIconViewCellInfo *info,
1615                                   GdkEvent            *event)
1616 {
1617   GtkTreePath *path;
1618   gchar *path_string;
1619   GdkRectangle cell_area;
1620   gboolean visible, mode;
1621
1622   gtk_icon_view_set_cell_data (icon_view, item);
1623
1624   g_object_get (info->cell,
1625                 "visible", &visible,
1626                 "mode", &mode,
1627                 NULL);
1628
1629   if (visible && mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE)
1630     {
1631       gtk_icon_view_get_cell_area (icon_view, item, info, &cell_area);
1632
1633       path = gtk_tree_path_new_from_indices (item->index, -1);
1634       path_string = gtk_tree_path_to_string (path);
1635       gtk_tree_path_free (path);
1636
1637       gtk_cell_renderer_activate (info->cell,
1638                                   event,
1639                                   GTK_WIDGET (icon_view),
1640                                   path_string,
1641                                   &cell_area,
1642                                   &cell_area,
1643                                   0);
1644
1645       g_free (path_string);
1646     }
1647 }
1648
1649 static void
1650 gtk_icon_view_put (GtkIconView     *icon_view,
1651                    GtkWidget       *widget,
1652                    GtkIconViewItem *item,
1653                    gint             cell)
1654 {
1655   GtkIconViewChild *child;
1656
1657   child = g_new (GtkIconViewChild, 1);
1658
1659   child->widget = widget;
1660   child->item = item;
1661   child->cell = cell;
1662
1663   icon_view->priv->children = g_list_append (icon_view->priv->children, child);
1664
1665   if (GTK_WIDGET_REALIZED (icon_view))
1666     gtk_widget_set_parent_window (child->widget, icon_view->priv->bin_window);
1667
1668   gtk_widget_set_parent (widget, GTK_WIDGET (icon_view));
1669 }
1670
1671 static void
1672 gtk_icon_view_remove_widget (GtkCellEditable *editable,
1673                              GtkIconView     *icon_view)
1674 {
1675   GList *l;
1676   GtkIconViewItem *item;
1677
1678   if (icon_view->priv->edited_item == NULL)
1679     return;
1680
1681   item = icon_view->priv->edited_item;
1682   icon_view->priv->edited_item = NULL;
1683   icon_view->priv->editable = NULL;
1684   for (l = icon_view->priv->cell_list; l; l = l->next)
1685     {
1686       GtkIconViewCellInfo *info = l->data;
1687
1688       info->editing = FALSE;
1689     }
1690
1691   if (GTK_WIDGET_HAS_FOCUS (editable))
1692     gtk_widget_grab_focus (GTK_WIDGET (icon_view));
1693
1694   g_signal_handlers_disconnect_by_func (editable,
1695                                         gtk_icon_view_remove_widget,
1696                                         icon_view);
1697
1698   gtk_container_remove (GTK_CONTAINER (icon_view),
1699                         GTK_WIDGET (editable));
1700
1701   gtk_icon_view_queue_draw_item (icon_view, item);
1702 }
1703
1704
1705 static void
1706 gtk_icon_view_start_editing (GtkIconView         *icon_view,
1707                              GtkIconViewItem     *item,
1708                              GtkIconViewCellInfo *info,
1709                              GdkEvent            *event)
1710 {
1711   GtkTreePath *path;
1712   gchar *path_string;
1713   GdkRectangle cell_area;
1714   gboolean visible, mode;
1715   GtkCellEditable *editable;
1716
1717   gtk_icon_view_set_cell_data (icon_view, item);
1718
1719   g_object_get (info->cell,
1720                 "visible", &visible,
1721                 "mode", &mode,
1722                 NULL);
1723   if (visible && mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1724     {
1725       gtk_icon_view_get_cell_area (icon_view, item, info, &cell_area);
1726
1727       path = gtk_tree_path_new_from_indices (item->index, -1);
1728       path_string = gtk_tree_path_to_string (path);
1729       gtk_tree_path_free (path);
1730
1731       editable = gtk_cell_renderer_start_editing (info->cell,
1732                                                   event,
1733                                                   GTK_WIDGET (icon_view),
1734                                                   path_string,
1735                                                   &cell_area,
1736                                                   &cell_area,
1737                                                   0);
1738       g_free (path_string);
1739
1740       /* FIXME ugly special case */
1741       if (GTK_IS_ENTRY (editable) || GTK_IS_COMBO_BOX (editable))
1742         g_object_set (editable, "has-frame", TRUE, NULL);
1743
1744       /* the rest corresponds to tree_view_real_start_editing... */
1745       icon_view->priv->edited_item = item;
1746       icon_view->priv->editable = editable;
1747       info->editing = TRUE;
1748
1749       gtk_icon_view_put (icon_view, GTK_WIDGET (editable), item,
1750                          info->position);
1751       gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (editable),
1752                                        (GdkEvent *)event);
1753       gtk_widget_grab_focus (GTK_WIDGET (editable));
1754       g_signal_connect (editable, "remove_widget",
1755                         G_CALLBACK (gtk_icon_view_remove_widget),
1756                         icon_view);
1757
1758     }
1759 }
1760
1761 static void
1762 gtk_icon_view_stop_editing (GtkIconView *icon_view,
1763                             gboolean     cancel_editing)
1764 {
1765   GtkCellRenderer *cell = NULL;
1766   GtkIconViewItem *item;
1767   GList *l;
1768
1769   if (icon_view->priv->edited_item == NULL)
1770     return;
1771
1772   /*
1773    * This is very evil. We need to do this, because
1774    * gtk_cell_editable_editing_done may trigger gtk_icon_view_row_changed
1775    * later on. If gtk_icon_view_row_changed notices
1776    * icon_view->priv->edited_item != NULL, it'll call
1777    * gtk_icon_view_stop_editing again. Bad things will happen then.
1778    *
1779    * Please read that again if you intend to modify anything here.
1780    */
1781
1782   item = icon_view->priv->edited_item;
1783   icon_view->priv->edited_item = NULL;
1784
1785   for (l = icon_view->priv->cell_list; l; l = l->next)
1786     {
1787       GtkIconViewCellInfo *info = l->data;
1788
1789       if (info->editing)
1790         {
1791           cell = info->cell;
1792           break;
1793         }
1794     }
1795
1796   if (cell == NULL)
1797     return;
1798
1799   gtk_cell_renderer_stop_editing (cell, cancel_editing);
1800   if (!cancel_editing)
1801     gtk_cell_editable_editing_done (icon_view->priv->editable);
1802
1803   icon_view->priv->edited_item = item;
1804
1805   gtk_cell_editable_remove_widget (icon_view->priv->editable);
1806 }
1807
1808 /**
1809  * gtk_icon_view_set_cursor:
1810  * @icon_view: A #GtkIconView
1811  * @path: A #GtkTreePath
1812  * @cell: One of the cell renderers of @icon_view, or %NULL
1813  * @start_editing: %TRUE if the specified cell should start being edited.
1814  *
1815  * Sets the current keyboard focus to be at @path, and selects it.  This is
1816  * useful when you want to focus the user's attention on a particular item.
1817  * If @cell is not %NULL, then focus is given to the cell specified by
1818  * it. Additionally, if @start_editing is %TRUE, then editing should be
1819  * started in the specified cell.
1820  *
1821  * This function is often followed by <literal>gtk_widget_grab_focus
1822  * (icon_view)</literal> in order to give keyboard focus to the widget.
1823  * Please note that editing can only happen when the widget is realized.
1824  *
1825  * Since: 2.8
1826  **/
1827 void
1828 gtk_icon_view_set_cursor (GtkIconView     *icon_view,
1829                           GtkTreePath     *path,
1830                           GtkCellRenderer *cell,
1831                           gboolean         start_editing)
1832 {
1833   GtkIconViewItem *item = NULL;
1834   GtkIconViewCellInfo *info =  NULL;
1835   GList *l;
1836   gint i, cell_pos;
1837
1838   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
1839   g_return_if_fail (path != NULL);
1840   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
1841
1842   gtk_icon_view_stop_editing (icon_view, TRUE);
1843
1844   if (gtk_tree_path_get_depth (path) == 1)
1845     item = g_list_nth_data (icon_view->priv->items,
1846                             gtk_tree_path_get_indices(path)[0]);
1847
1848   if (!item)
1849     return;
1850
1851   cell_pos = -1;
1852   for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
1853     {
1854       info = l->data;
1855
1856       if (info->cell == cell)
1857         {
1858           cell_pos = i;
1859           break;
1860         }
1861
1862       info = NULL;
1863     }
1864
1865   g_return_if_fail (cell == NULL || info != NULL);
1866
1867   gtk_icon_view_set_cursor_item (icon_view, item, cell_pos);
1868   gtk_icon_view_scroll_to_path (icon_view, path, FALSE, 0.0, 0.0);
1869
1870   if (info && start_editing)
1871     gtk_icon_view_start_editing (icon_view, item, info, NULL);
1872 }
1873
1874 /**
1875  * gtk_icon_view_get_cursor:
1876  * @icon_view: A #GtkIconView
1877  * @path: Return location for the current cursor path, or %NULL
1878  * @cell: Return location the current focus cell, or %NULL
1879  *
1880  * Fills in @path and @cell with the current cursor path and cell.
1881  * If the cursor isn't currently set, then *@path will be %NULL.
1882  * If no cell currently has focus, then *@cell will be %NULL.
1883  *
1884  * The returned #GtkTreePath must be freed with gtk_tree_path_free().
1885  *
1886  * Return value: %TRUE if the cursor is set.
1887  *
1888  * Since: 2.8
1889  **/
1890 gboolean
1891 gtk_icon_view_get_cursor (GtkIconView      *icon_view,
1892                           GtkTreePath     **path,
1893                           GtkCellRenderer **cell)
1894 {
1895   GtkIconViewItem *item;
1896   GtkIconViewCellInfo *info;
1897
1898   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
1899
1900   item = icon_view->priv->cursor_item;
1901   if (icon_view->priv->cursor_cell < 0)
1902     info = NULL;
1903   else
1904     info = g_list_nth_data (icon_view->priv->cell_list,
1905                             icon_view->priv->cursor_cell);
1906
1907   if (path != NULL)
1908     {
1909       if (item != NULL)
1910         *path = gtk_tree_path_new_from_indices (item->index, -1);
1911       else
1912         *path = NULL;
1913     }
1914
1915   if (cell != NULL)
1916     {
1917       if (info != NULL)
1918         *cell = info->cell;
1919       else
1920         *cell = NULL;
1921     }
1922
1923   return (item != NULL);
1924 }
1925
1926 static gboolean
1927 gtk_icon_view_button_press (GtkWidget      *widget,
1928                             GdkEventButton *event)
1929 {
1930   GtkIconView *icon_view;
1931   GtkIconViewItem *item;
1932   GtkIconViewCellInfo *info = NULL;
1933   gboolean dirty = FALSE;
1934   GtkCellRendererMode mode;
1935   gint cursor_cell;
1936
1937   icon_view = GTK_ICON_VIEW (widget);
1938
1939   if (event->window != icon_view->priv->bin_window)
1940     return FALSE;
1941
1942   if (!GTK_WIDGET_HAS_FOCUS (widget))
1943     gtk_widget_grab_focus (widget);
1944
1945   if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
1946     {
1947       item = gtk_icon_view_get_item_at_coords (icon_view,
1948                                                event->x, event->y,
1949                                                TRUE,
1950                                                &info);
1951       if (item != NULL)
1952         {
1953           g_object_get (info->cell, "mode", &mode, NULL);
1954
1955           if (mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE ||
1956               mode == GTK_CELL_RENDERER_MODE_EDITABLE)
1957             cursor_cell = g_list_index (icon_view->priv->cell_list, info);
1958           else
1959             cursor_cell = -1;
1960
1961           gtk_icon_view_scroll_to_item (icon_view, item);
1962
1963           if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
1964             {
1965               gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
1966             }
1967           else if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE &&
1968                    (event->state & GDK_SHIFT_MASK))
1969             {
1970               gtk_icon_view_unselect_all_internal (icon_view);
1971
1972               gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
1973               if (!icon_view->priv->anchor_item)
1974                 icon_view->priv->anchor_item = item;
1975               else
1976                 gtk_icon_view_select_all_between (icon_view,
1977                                                   icon_view->priv->anchor_item,
1978                                                   item);
1979               dirty = TRUE;
1980             }
1981           else
1982             {
1983               if ((icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE ||
1984                   ((icon_view->priv->selection_mode == GTK_SELECTION_SINGLE) && item->selected)) &&
1985                   (event->state & GDK_CONTROL_MASK))
1986                 {
1987                   item->selected = !item->selected;
1988                   gtk_icon_view_queue_draw_item (icon_view, item);
1989                   dirty = TRUE;
1990                 }
1991               else
1992                 {
1993                   if (!item->selected)
1994                     {
1995                       gtk_icon_view_unselect_all_internal (icon_view);
1996
1997                       item->selected = TRUE;
1998                       gtk_icon_view_queue_draw_item (icon_view, item);
1999                       dirty = TRUE;
2000                     }
2001                 }
2002               gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
2003               icon_view->priv->anchor_item = item;
2004             }
2005
2006           /* Save press to possibly begin a drag */
2007           if (icon_view->priv->pressed_button < 0)
2008             {
2009               icon_view->priv->pressed_button = event->button;
2010               icon_view->priv->press_start_x = event->x;
2011               icon_view->priv->press_start_y = event->y;
2012             }
2013
2014           if (!icon_view->priv->last_single_clicked)
2015             icon_view->priv->last_single_clicked = item;
2016
2017           /* cancel the current editing, if it exists */
2018           gtk_icon_view_stop_editing (icon_view, TRUE);
2019
2020           if (mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE)
2021             gtk_icon_view_item_activate_cell (icon_view, item, info,
2022                                               (GdkEvent *)event);
2023           else if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
2024             gtk_icon_view_start_editing (icon_view, item, info,
2025                                          (GdkEvent *)event);
2026         }
2027       else
2028         {
2029           if (icon_view->priv->selection_mode != GTK_SELECTION_BROWSE &&
2030               !(event->state & GDK_CONTROL_MASK))
2031             {
2032               dirty = gtk_icon_view_unselect_all_internal (icon_view);
2033             }
2034
2035           if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
2036             gtk_icon_view_start_rubberbanding (icon_view, event->x, event->y);
2037         }
2038
2039     }
2040
2041   if (event->button == 1 && event->type == GDK_2BUTTON_PRESS)
2042     {
2043       item = gtk_icon_view_get_item_at_coords (icon_view,
2044                                                event->x, event->y,
2045                                                TRUE,
2046                                                NULL);
2047
2048       if (item && item == icon_view->priv->last_single_clicked)
2049         {
2050           GtkTreePath *path;
2051
2052           path = gtk_tree_path_new_from_indices (item->index, -1);
2053           gtk_icon_view_item_activated (icon_view, path);
2054           gtk_tree_path_free (path);
2055         }
2056
2057       icon_view->priv->last_single_clicked = NULL;
2058       icon_view->priv->pressed_button = -1;
2059     }
2060
2061   if (dirty)
2062     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2063
2064   return event->button == 1;
2065 }
2066
2067 static gboolean
2068 gtk_icon_view_button_release (GtkWidget      *widget,
2069                               GdkEventButton *event)
2070 {
2071   GtkIconView *icon_view;
2072
2073   icon_view = GTK_ICON_VIEW (widget);
2074
2075   if (icon_view->priv->pressed_button == event->button)
2076     icon_view->priv->pressed_button = -1;
2077
2078   gtk_icon_view_stop_rubberbanding (icon_view);
2079
2080   remove_scroll_timeout (icon_view);
2081
2082   return TRUE;
2083 }
2084
2085 static gboolean
2086 gtk_icon_view_key_press (GtkWidget      *widget,
2087                          GdkEventKey    *event)
2088 {
2089   GtkIconView *icon_view = GTK_ICON_VIEW (widget);
2090
2091   if (icon_view->priv->doing_rubberband)
2092     {
2093       if (event->keyval == GDK_Escape)
2094         gtk_icon_view_stop_rubberbanding (icon_view);
2095
2096       return TRUE;
2097     }
2098
2099   return (* GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->key_press_event) (widget, event);
2100 }
2101
2102 static gboolean
2103 gtk_icon_view_key_release (GtkWidget      *widget,
2104                            GdkEventKey    *event)
2105 {
2106   GtkIconView *icon_view = GTK_ICON_VIEW (widget);
2107
2108   if (icon_view->priv->doing_rubberband)
2109     return TRUE;
2110
2111   return (* GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->key_press_event) (widget, event);
2112 }
2113
2114 static void
2115 gtk_icon_view_update_rubberband (gpointer data)
2116 {
2117   GtkIconView *icon_view;
2118   gint x, y;
2119   GdkRectangle old_area;
2120   GdkRectangle new_area;
2121   GdkRectangle common;
2122   GdkRegion *invalid_region;
2123
2124   icon_view = GTK_ICON_VIEW (data);
2125
2126   gdk_window_get_pointer (icon_view->priv->bin_window, &x, &y, NULL);
2127
2128   x = MAX (x, 0);
2129   y = MAX (y, 0);
2130
2131   old_area.x = MIN (icon_view->priv->rubberband_x1,
2132                     icon_view->priv->rubberband_x2);
2133   old_area.y = MIN (icon_view->priv->rubberband_y1,
2134                     icon_view->priv->rubberband_y2);
2135   old_area.width = ABS (icon_view->priv->rubberband_x2 -
2136                         icon_view->priv->rubberband_x1) + 1;
2137   old_area.height = ABS (icon_view->priv->rubberband_y2 -
2138                          icon_view->priv->rubberband_y1) + 1;
2139
2140   new_area.x = MIN (icon_view->priv->rubberband_x1, x);
2141   new_area.y = MIN (icon_view->priv->rubberband_y1, y);
2142   new_area.width = ABS (x - icon_view->priv->rubberband_x1) + 1;
2143   new_area.height = ABS (y - icon_view->priv->rubberband_y1) + 1;
2144
2145   invalid_region = gdk_region_rectangle (&old_area);
2146   gdk_region_union_with_rect (invalid_region, &new_area);
2147
2148   gdk_rectangle_intersect (&old_area, &new_area, &common);
2149   if (common.width > 2 && common.height > 2)
2150     {
2151       GdkRegion *common_region;
2152
2153       /* make sure the border is invalidated */
2154       common.x += 1;
2155       common.y += 1;
2156       common.width -= 2;
2157       common.height -= 2;
2158
2159       common_region = gdk_region_rectangle (&common);
2160
2161       gdk_region_subtract (invalid_region, common_region);
2162       gdk_region_destroy (common_region);
2163     }
2164
2165   gdk_window_invalidate_region (icon_view->priv->bin_window, invalid_region, TRUE);
2166
2167   gdk_region_destroy (invalid_region);
2168
2169   icon_view->priv->rubberband_x2 = x;
2170   icon_view->priv->rubberband_y2 = y;
2171
2172   gtk_icon_view_update_rubberband_selection (icon_view);
2173 }
2174
2175 static void
2176 gtk_icon_view_start_rubberbanding (GtkIconView  *icon_view,
2177                                    gint          x,
2178                                    gint          y)
2179 {
2180   GList *items;
2181
2182   g_assert (!icon_view->priv->doing_rubberband);
2183
2184   for (items = icon_view->priv->items; items; items = items->next)
2185     {
2186       GtkIconViewItem *item = items->data;
2187
2188       item->selected_before_rubberbanding = item->selected;
2189     }
2190
2191   icon_view->priv->rubberband_x1 = x;
2192   icon_view->priv->rubberband_y1 = y;
2193   icon_view->priv->rubberband_x2 = x;
2194   icon_view->priv->rubberband_y2 = y;
2195
2196   icon_view->priv->doing_rubberband = TRUE;
2197
2198   gtk_grab_add (GTK_WIDGET (icon_view));
2199 }
2200
2201 static void
2202 gtk_icon_view_stop_rubberbanding (GtkIconView *icon_view)
2203 {
2204   if (!icon_view->priv->doing_rubberband)
2205     return;
2206
2207   icon_view->priv->doing_rubberband = FALSE;
2208
2209   gtk_grab_remove (GTK_WIDGET (icon_view));
2210
2211   gtk_widget_queue_draw (GTK_WIDGET (icon_view));
2212 }
2213
2214 static void
2215 gtk_icon_view_update_rubberband_selection (GtkIconView *icon_view)
2216 {
2217   GList *items;
2218   gint x, y, width, height;
2219   gboolean dirty = FALSE;
2220
2221   x = MIN (icon_view->priv->rubberband_x1,
2222            icon_view->priv->rubberband_x2);
2223   y = MIN (icon_view->priv->rubberband_y1,
2224            icon_view->priv->rubberband_y2);
2225   width = ABS (icon_view->priv->rubberband_x1 -
2226                icon_view->priv->rubberband_x2);
2227   height = ABS (icon_view->priv->rubberband_y1 -
2228                 icon_view->priv->rubberband_y2);
2229
2230   for (items = icon_view->priv->items; items; items = items->next)
2231     {
2232       GtkIconViewItem *item = items->data;
2233       gboolean is_in;
2234       gboolean selected;
2235
2236       is_in = gtk_icon_view_item_hit_test (icon_view, item,
2237                                            x, y, width, height);
2238
2239       selected = is_in ^ item->selected_before_rubberbanding;
2240
2241       if (item->selected != selected)
2242         {
2243           item->selected = selected;
2244           dirty = TRUE;
2245           gtk_icon_view_queue_draw_item (icon_view, item);
2246         }
2247     }
2248
2249   if (dirty)
2250     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2251 }
2252
2253 static gboolean
2254 gtk_icon_view_item_hit_test (GtkIconView      *icon_view,
2255                              GtkIconViewItem  *item,
2256                              gint              x,
2257                              gint              y,
2258                              gint              width,
2259                              gint              height)
2260 {
2261   GList *l;
2262   GdkRectangle box;
2263
2264   for (l = icon_view->priv->cell_list; l; l = l->next)
2265     {
2266       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
2267
2268       if (!info->cell->visible)
2269         continue;
2270
2271       gtk_icon_view_get_cell_box (icon_view, item, info, &box);
2272
2273       if (MIN (x + width, box.x + box.width) - MAX (x, box.x) > 0 &&
2274         MIN (y + height, box.y + box.height) - MAX (y, box.y) > 0)
2275         return TRUE;
2276     }
2277
2278   return FALSE;
2279 }
2280
2281 static gboolean
2282 gtk_icon_view_unselect_all_internal (GtkIconView  *icon_view)
2283 {
2284   gboolean dirty = FALSE;
2285   GList *items;
2286
2287   if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
2288     return FALSE;
2289
2290   for (items = icon_view->priv->items; items; items = items->next)
2291     {
2292       GtkIconViewItem *item = items->data;
2293
2294       if (item->selected)
2295         {
2296           item->selected = FALSE;
2297           dirty = TRUE;
2298           gtk_icon_view_queue_draw_item (icon_view, item);
2299         }
2300     }
2301
2302   return dirty;
2303 }
2304
2305
2306 /* GtkIconView signals */
2307 static void
2308 gtk_icon_view_set_adjustments (GtkIconView   *icon_view,
2309                                GtkAdjustment *hadj,
2310                                GtkAdjustment *vadj)
2311 {
2312   gboolean need_adjust = FALSE;
2313
2314   if (hadj)
2315     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
2316   else
2317     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
2318   if (vadj)
2319     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
2320   else
2321     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
2322
2323   if (icon_view->priv->hadjustment && (icon_view->priv->hadjustment != hadj))
2324     {
2325       g_signal_handlers_disconnect_matched (icon_view->priv->hadjustment, G_SIGNAL_MATCH_DATA,
2326                                            0, 0, NULL, NULL, icon_view);
2327       g_object_unref (icon_view->priv->hadjustment);
2328     }
2329
2330   if (icon_view->priv->vadjustment && (icon_view->priv->vadjustment != vadj))
2331     {
2332       g_signal_handlers_disconnect_matched (icon_view->priv->vadjustment, G_SIGNAL_MATCH_DATA,
2333                                             0, 0, NULL, NULL, icon_view);
2334       g_object_unref (icon_view->priv->vadjustment);
2335     }
2336
2337   if (icon_view->priv->hadjustment != hadj)
2338     {
2339       icon_view->priv->hadjustment = hadj;
2340       g_object_ref_sink (icon_view->priv->hadjustment);
2341
2342       g_signal_connect (icon_view->priv->hadjustment, "value_changed",
2343                         G_CALLBACK (gtk_icon_view_adjustment_changed),
2344                         icon_view);
2345       need_adjust = TRUE;
2346     }
2347
2348   if (icon_view->priv->vadjustment != vadj)
2349     {
2350       icon_view->priv->vadjustment = vadj;
2351       g_object_ref_sink (icon_view->priv->vadjustment);
2352
2353       g_signal_connect (icon_view->priv->vadjustment, "value_changed",
2354                         G_CALLBACK (gtk_icon_view_adjustment_changed),
2355                         icon_view);
2356       need_adjust = TRUE;
2357     }
2358
2359   if (need_adjust)
2360     gtk_icon_view_adjustment_changed (NULL, icon_view);
2361 }
2362
2363 static void
2364 gtk_icon_view_real_select_all (GtkIconView *icon_view)
2365 {
2366   gtk_icon_view_select_all (icon_view);
2367 }
2368
2369 static void
2370 gtk_icon_view_real_unselect_all (GtkIconView *icon_view)
2371 {
2372   gtk_icon_view_unselect_all (icon_view);
2373 }
2374
2375 static void
2376 gtk_icon_view_real_select_cursor_item (GtkIconView *icon_view)
2377 {
2378   gtk_icon_view_unselect_all (icon_view);
2379
2380   if (icon_view->priv->cursor_item != NULL)
2381     gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2382 }
2383
2384 static gboolean
2385 gtk_icon_view_real_activate_cursor_item (GtkIconView *icon_view)
2386 {
2387   GtkTreePath *path;
2388   GtkCellRendererMode mode;
2389   GtkIconViewCellInfo *info = NULL;
2390
2391   if (!icon_view->priv->cursor_item)
2392     return FALSE;
2393
2394   info = g_list_nth_data (icon_view->priv->cell_list,
2395                           icon_view->priv->cursor_cell);
2396
2397   if (info)
2398     {
2399       g_object_get (info->cell, "mode", &mode, NULL);
2400
2401       if (mode == GTK_CELL_RENDERER_MODE_ACTIVATABLE)
2402         {
2403           gtk_icon_view_item_activate_cell (icon_view,
2404                                             icon_view->priv->cursor_item,
2405                                             info, NULL);
2406           return TRUE;
2407         }
2408       else if (mode == GTK_CELL_RENDERER_MODE_EDITABLE)
2409         {
2410           gtk_icon_view_start_editing (icon_view,
2411                                        icon_view->priv->cursor_item,
2412                                        info, NULL);
2413           return TRUE;
2414         }
2415     }
2416
2417   path = gtk_tree_path_new_from_indices (icon_view->priv->cursor_item->index, -1);
2418   gtk_icon_view_item_activated (icon_view, path);
2419   gtk_tree_path_free (path);
2420
2421   return TRUE;
2422 }
2423
2424 static void
2425 gtk_icon_view_real_toggle_cursor_item (GtkIconView *icon_view)
2426 {
2427   if (!icon_view->priv->cursor_item)
2428     return;
2429
2430   switch (icon_view->priv->selection_mode)
2431     {
2432     case GTK_SELECTION_NONE:
2433       break;
2434     case GTK_SELECTION_BROWSE:
2435       gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2436       break;
2437     case GTK_SELECTION_SINGLE:
2438       if (icon_view->priv->cursor_item->selected)
2439         gtk_icon_view_unselect_item (icon_view, icon_view->priv->cursor_item);
2440       else
2441         gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2442       break;
2443     case GTK_SELECTION_MULTIPLE:
2444       icon_view->priv->cursor_item->selected = !icon_view->priv->cursor_item->selected;
2445       g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2446
2447       gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
2448       break;
2449     }
2450 }
2451
2452 /* Internal functions */
2453 static void
2454 gtk_icon_view_adjustment_changed (GtkAdjustment *adjustment,
2455                                   GtkIconView   *icon_view)
2456 {
2457   if (GTK_WIDGET_REALIZED (icon_view))
2458     {
2459       gdk_window_move (icon_view->priv->bin_window,
2460                        - icon_view->priv->hadjustment->value,
2461                        - icon_view->priv->vadjustment->value);
2462
2463       if (icon_view->priv->doing_rubberband)
2464         gtk_icon_view_update_rubberband (GTK_WIDGET (icon_view));
2465
2466       gdk_window_process_updates (icon_view->priv->bin_window, TRUE);
2467     }
2468 }
2469
2470 static GList *
2471 gtk_icon_view_layout_single_row (GtkIconView *icon_view,
2472                                  GList       *first_item,
2473                                  gint         item_width,
2474                                  gint         row,
2475                                  gint        *y,
2476                                  gint        *maximum_width)
2477 {
2478   gint focus_width;
2479   gint x, current_width;
2480   GList *items, *last_item;
2481   gint col;
2482   gint colspan;
2483   gint *max_height;
2484   gint i;
2485   gboolean rtl;
2486
2487   rtl = gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL;
2488   max_height = g_new0 (gint, icon_view->priv->n_cells);
2489
2490   x = 0;
2491   col = 0;
2492   items = first_item;
2493   current_width = 0;
2494
2495   gtk_widget_style_get (GTK_WIDGET (icon_view),
2496                         "focus-line-width", &focus_width,
2497                         NULL);
2498
2499   x += icon_view->priv->margin + focus_width;
2500   current_width += 2 * (icon_view->priv->margin + focus_width);
2501
2502   items = first_item;
2503   while (items)
2504     {
2505       GtkIconViewItem *item = items->data;
2506
2507       gtk_icon_view_calculate_item_size (icon_view, item);
2508       colspan = 1 + (item->width - 1) / (item_width + icon_view->priv->column_spacing);
2509
2510       item->width = colspan * item_width + (colspan - 1) * icon_view->priv->column_spacing;
2511
2512       current_width += item->width;
2513
2514       if (items != first_item)
2515         {
2516           if ((icon_view->priv->columns <= 0 && current_width > GTK_WIDGET (icon_view)->allocation.width) ||
2517               (icon_view->priv->columns > 0 && col >= icon_view->priv->columns))
2518             break;
2519         }
2520
2521       current_width += icon_view->priv->column_spacing + 2 * focus_width;
2522
2523       item->y = *y + focus_width;
2524       item->x = rtl ? GTK_WIDGET (icon_view)->allocation.width - item->width - x : x;
2525
2526       x = current_width - (icon_view->priv->margin + focus_width);
2527
2528       for (i = 0; i < icon_view->priv->n_cells; i++)
2529         max_height[i] = MAX (max_height[i], item->box[i].height);
2530
2531       if (current_width > *maximum_width)
2532         *maximum_width = current_width;
2533
2534       item->row = row;
2535       item->col = col;
2536
2537       col += colspan;
2538       items = items->next;
2539     }
2540
2541   last_item = items;
2542
2543   /* Now go through the row again and align the icons */
2544   for (items = first_item; items != last_item; items = items->next)
2545     {
2546       GtkIconViewItem *item = items->data;
2547
2548       gtk_icon_view_calculate_item_size2 (icon_view, item, max_height);
2549
2550       /* We may want to readjust the new y coordinate. */
2551       if (item->y + item->height + focus_width + icon_view->priv->row_spacing > *y)
2552         *y = item->y + item->height + focus_width + icon_view->priv->row_spacing;
2553
2554       if (rtl)
2555         item->col = col - 1 - item->col;
2556     }
2557
2558   g_free (max_height);
2559
2560   return last_item;
2561 }
2562
2563 static void
2564 gtk_icon_view_set_adjustment_upper (GtkAdjustment *adj,
2565                                     gdouble        upper)
2566 {
2567   if (upper != adj->upper)
2568     {
2569       gdouble min = MAX (0.0, upper - adj->page_size);
2570       gboolean value_changed = FALSE;
2571
2572       adj->upper = upper;
2573
2574       if (adj->value > min)
2575         {
2576           adj->value = min;
2577           value_changed = TRUE;
2578         }
2579
2580       gtk_adjustment_changed (adj);
2581
2582       if (value_changed)
2583         gtk_adjustment_value_changed (adj);
2584     }
2585 }
2586
2587 static void
2588 gtk_icon_view_layout (GtkIconView *icon_view)
2589 {
2590   gint y = 0, maximum_width = 0;
2591   GList *icons;
2592   GtkWidget *widget;
2593   gint row;
2594   gint item_width;
2595
2596   if (icon_view->priv->layout_idle_id != 0)
2597     {
2598       g_source_remove (icon_view->priv->layout_idle_id);
2599       icon_view->priv->layout_idle_id = 0;
2600     }
2601
2602   if (icon_view->priv->model == NULL)
2603     return;
2604
2605   widget = GTK_WIDGET (icon_view);
2606
2607   item_width = icon_view->priv->item_width;
2608
2609   if (item_width < 0)
2610     {
2611       for (icons = icon_view->priv->items; icons; icons = icons->next)
2612         {
2613           GtkIconViewItem *item = icons->data;
2614           gtk_icon_view_calculate_item_size (icon_view, item);
2615           item_width = MAX (item_width, item->width);
2616         }
2617     }
2618
2619
2620   icons = icon_view->priv->items;
2621   y += icon_view->priv->margin;
2622   row = 0;
2623
2624   if (icons)
2625     {
2626       gtk_icon_view_set_cell_data (icon_view, icons->data);
2627       adjust_wrap_width (icon_view, icons->data);
2628     }
2629
2630   do
2631     {
2632       icons = gtk_icon_view_layout_single_row (icon_view, icons,
2633                                                item_width, row,
2634                                                &y, &maximum_width);
2635       row++;
2636     }
2637   while (icons != NULL);
2638
2639   if (maximum_width != icon_view->priv->width)
2640     icon_view->priv->width = maximum_width;
2641
2642   y += icon_view->priv->margin;
2643
2644   if (y != icon_view->priv->height)
2645     icon_view->priv->height = y;
2646
2647   gtk_icon_view_set_adjustment_upper (icon_view->priv->hadjustment,
2648                                       icon_view->priv->width);
2649   gtk_icon_view_set_adjustment_upper (icon_view->priv->vadjustment,
2650                                       icon_view->priv->height);
2651
2652   if (icon_view->priv->width != widget->requisition.width ||
2653       icon_view->priv->height != widget->requisition.height)
2654     gtk_widget_queue_resize_no_redraw (widget);
2655
2656   if (GTK_WIDGET_REALIZED (icon_view))
2657     gdk_window_resize (icon_view->priv->bin_window,
2658                        MAX (icon_view->priv->width, widget->allocation.width),
2659                        MAX (icon_view->priv->height, widget->allocation.height));
2660
2661   if (icon_view->priv->scroll_to_path)
2662     {
2663       GtkTreePath *path;
2664
2665       path = gtk_tree_row_reference_get_path (icon_view->priv->scroll_to_path);
2666       gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
2667       icon_view->priv->scroll_to_path = NULL;
2668
2669       gtk_icon_view_scroll_to_path (icon_view, path,
2670                                     icon_view->priv->scroll_to_use_align,
2671                                     icon_view->priv->scroll_to_row_align,
2672                                     icon_view->priv->scroll_to_col_align);
2673       gtk_tree_path_free (path);
2674     }
2675
2676   gtk_widget_queue_draw (widget);
2677 }
2678
2679 static void
2680 gtk_icon_view_get_cell_area (GtkIconView         *icon_view,
2681                              GtkIconViewItem     *item,
2682                              GtkIconViewCellInfo *info,
2683                              GdkRectangle        *cell_area)
2684 {
2685   if (icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2686     {
2687       cell_area->x = item->box[info->position].x - item->before[info->position];
2688       cell_area->y = item->y;
2689       cell_area->width = item->box[info->position].width +
2690         item->before[info->position] + item->after[info->position];
2691       cell_area->height = item->height;
2692     }
2693   else
2694     {
2695       cell_area->x = item->x;
2696       cell_area->y = item->box[info->position].y - item->before[info->position];
2697       cell_area->width = item->width;
2698       cell_area->height = item->box[info->position].height +
2699         item->before[info->position] + item->after[info->position];
2700     }
2701 }
2702
2703 static void
2704 gtk_icon_view_get_cell_box (GtkIconView         *icon_view,
2705                             GtkIconViewItem     *item,
2706                             GtkIconViewCellInfo *info,
2707                             GdkRectangle        *box)
2708 {
2709   *box = item->box[info->position];
2710 }
2711
2712 /* try to guess a reasonable wrap width for an implicit text cell renderer
2713  */
2714 static void
2715 adjust_wrap_width (GtkIconView     *icon_view,
2716                    GtkIconViewItem *item)
2717 {
2718   GtkIconViewCellInfo *text_info;
2719   GtkIconViewCellInfo *pixbuf_info;
2720   gint pixbuf_width, wrap_width;
2721
2722   if (icon_view->priv->text_cell != -1 &&
2723       icon_view->priv->pixbuf_cell != -1)
2724     {
2725       gint item_width;
2726
2727       text_info = g_list_nth_data (icon_view->priv->cell_list,
2728                                    icon_view->priv->text_cell);
2729       pixbuf_info = g_list_nth_data (icon_view->priv->cell_list,
2730                                      icon_view->priv->pixbuf_cell);
2731
2732       gtk_cell_renderer_get_size (pixbuf_info->cell,
2733                                   GTK_WIDGET (icon_view),
2734                                   NULL, NULL, NULL,
2735                                   &pixbuf_width,
2736                                   NULL);
2737
2738
2739       if (icon_view->priv->item_width > 0)
2740         item_width = icon_view->priv->item_width;
2741       else
2742         item_width = item->width;
2743
2744       if (item->width == -1)
2745         {
2746           if (item_width > 0)
2747             wrap_width = item_width - pixbuf_width - icon_view->priv->spacing;
2748           else
2749             wrap_width = MAX (2 * pixbuf_width, 50);
2750         }
2751       else if (icon_view->priv->orientation == GTK_ORIENTATION_VERTICAL)
2752         wrap_width = item_width;
2753       else
2754         wrap_width = item_width - pixbuf_width - icon_view->priv->spacing;
2755
2756       g_object_set (text_info->cell, "wrap-width", wrap_width, NULL);
2757       g_object_set (text_info->cell, "width", wrap_width, NULL);
2758     }
2759 }
2760
2761 static void
2762 gtk_icon_view_calculate_item_size (GtkIconView     *icon_view,
2763                                    GtkIconViewItem *item)
2764 {
2765   gint spacing;
2766   GList *l;
2767
2768   if (item->width != -1 && item->height != -1)
2769     return;
2770
2771   if (item->n_cells != icon_view->priv->n_cells)
2772     {
2773       g_free (item->before);
2774       g_free (item->after);
2775       g_free (item->box);
2776
2777       item->before = g_new0 (gint, icon_view->priv->n_cells);
2778       item->after = g_new0 (gint, icon_view->priv->n_cells);
2779       item->box = g_new0 (GdkRectangle, icon_view->priv->n_cells);
2780
2781       item->n_cells = icon_view->priv->n_cells;
2782     }
2783
2784   gtk_icon_view_set_cell_data (icon_view, item);
2785
2786   spacing = icon_view->priv->spacing;
2787
2788   item->width = 0;
2789   item->height = 0;
2790   for (l = icon_view->priv->cell_list; l; l = l->next)
2791     {
2792       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
2793
2794       if (!info->cell->visible)
2795         continue;
2796
2797       gtk_cell_renderer_get_size (info->cell, GTK_WIDGET (icon_view),
2798                                   NULL, NULL, NULL,
2799                                   &item->box[info->position].width,
2800                                   &item->box[info->position].height);
2801
2802       if (icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2803         {
2804           item->width += item->box[info->position].width
2805             + (info->position > 0 ? spacing : 0);
2806           item->height = MAX (item->height, item->box[info->position].height);
2807         }
2808       else
2809         {
2810           item->width = MAX (item->width, item->box[info->position].width);
2811           item->height += item->box[info->position].height + (info->position > 0 ? spacing : 0);
2812         }
2813     }
2814 }
2815
2816 static void
2817 gtk_icon_view_calculate_item_size2 (GtkIconView     *icon_view,
2818                                     GtkIconViewItem *item,
2819                                     gint            *max_height)
2820 {
2821   GdkRectangle cell_area;
2822   gint spacing;
2823   GList *l;
2824   gint i, k;
2825   gboolean rtl;
2826
2827   rtl = gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL;
2828
2829   gtk_icon_view_set_cell_data (icon_view, item);
2830
2831   spacing = icon_view->priv->spacing;
2832
2833   item->height = 0;
2834   for (i = 0; i < icon_view->priv->n_cells; i++)
2835     {
2836       if (icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2837         item->height = MAX (item->height, max_height[i]);
2838       else
2839         item->height += max_height[i] + (i > 0 ? spacing : 0);
2840     }
2841
2842   cell_area.x = item->x;
2843   cell_area.y = item->y;
2844
2845   for (k = 0; k < 2; k++)
2846     for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
2847       {
2848         GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
2849
2850         if (info->pack == (k ? GTK_PACK_START : GTK_PACK_END))
2851           continue;
2852
2853         if (!info->cell->visible)
2854           continue;
2855
2856         if (icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2857           {
2858             cell_area.width = item->box[info->position].width;
2859             cell_area.height = item->height;
2860           }
2861         else
2862           {
2863             cell_area.width = item->width;
2864             cell_area.height = max_height[i];
2865           }
2866
2867         gtk_cell_renderer_get_size (info->cell, GTK_WIDGET (icon_view),
2868                                     &cell_area,
2869                                     &item->box[info->position].x, &item->box[info->position].y,
2870                                     &item->box[info->position].width, &item->box[info->position].height);
2871
2872         item->box[info->position].x += cell_area.x;
2873         item->box[info->position].y += cell_area.y;
2874         if (icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2875           {
2876             item->before[info->position] = item->box[info->position].x - cell_area.x;
2877             item->after[info->position] = cell_area.width - item->box[info->position].width - item->before[info->position];
2878             cell_area.x += cell_area.width + spacing;
2879           }
2880         else
2881           {
2882             if (item->box[info->position].width > item->width)
2883               {
2884                 item->width = item->box[info->position].width;
2885                 cell_area.width = item->width;
2886               }
2887             item->before[info->position] = item->box[info->position].y - cell_area.y;
2888             item->after[info->position] = cell_area.height - item->box[info->position].height - item->before[info->position];
2889             cell_area.y += cell_area.height + spacing;
2890           }
2891       }
2892
2893   if (rtl && icon_view->priv->orientation == GTK_ORIENTATION_HORIZONTAL)
2894     {
2895       for (i = 0; i < icon_view->priv->n_cells; i++)
2896         {
2897           item->box[i].x = item->x + item->width -
2898             (item->box[i].x + item->box[i].width - item->x);
2899         }
2900     }
2901 }
2902
2903 static void
2904 gtk_icon_view_invalidate_sizes (GtkIconView *icon_view)
2905 {
2906   g_list_foreach (icon_view->priv->items,
2907                   (GFunc)gtk_icon_view_item_invalidate_size, NULL);
2908 }
2909
2910 static void
2911 gtk_icon_view_item_invalidate_size (GtkIconViewItem *item)
2912 {
2913   item->width = -1;
2914   item->height = -1;
2915 }
2916
2917 static void
2918 gtk_icon_view_paint_item (GtkIconView     *icon_view,
2919                           cairo_t         *cr,
2920                           GtkIconViewItem *item,
2921                           GdkRectangle    *area,
2922                           GdkDrawable     *drawable,
2923                           gint             x,
2924                           gint             y,
2925                           gboolean         draw_focus)
2926 {
2927   gint focus_width, focus_pad;
2928   gint padding;
2929   GdkRectangle cell_area, box;
2930   GList *l;
2931   gint i;
2932   GtkStateType state;
2933   GtkCellRendererState flags;
2934
2935   if (icon_view->priv->model == NULL)
2936     return;
2937
2938   gtk_icon_view_set_cell_data (icon_view, item);
2939
2940   gtk_widget_style_get (GTK_WIDGET (icon_view),
2941                         "focus-line-width", &focus_width,
2942                         "focus-padding", &focus_pad,
2943                         NULL);
2944
2945   padding = focus_width;
2946
2947   if (item->selected)
2948     {
2949       flags = GTK_CELL_RENDERER_SELECTED;
2950       if (GTK_WIDGET_HAS_FOCUS (icon_view))
2951         state = GTK_STATE_SELECTED;
2952       else
2953         state = GTK_STATE_ACTIVE;
2954     }
2955   else
2956     {
2957       flags = 0;
2958       state = GTK_STATE_NORMAL;
2959     }
2960
2961 #ifdef DEBUG_ICON_VIEW
2962   gdk_draw_rectangle (drawable,
2963                       GTK_WIDGET (icon_view)->style->black_gc,
2964                       FALSE,
2965                       x, y,
2966                       item->width, item->height);
2967 #endif
2968
2969   if (item->selected)
2970     for (l = icon_view->priv->cell_list; l; l = l->next)
2971       {
2972         GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
2973
2974         if (!info->cell->visible)
2975           continue;
2976
2977         gtk_icon_view_get_cell_box (icon_view, item, info, &box);
2978
2979         /* FIXME we hardwire background drawing behind text
2980          * cell renderers here
2981          */
2982         if (GTK_IS_CELL_RENDERER_TEXT (info->cell))
2983           {
2984             gdk_cairo_set_source_color (cr, &GTK_WIDGET (icon_view)->style->base[state]);
2985             cairo_rectangle (cr,
2986                              x - item->x + box.x,
2987                              y - item->y + box.y,
2988                              box.width, box.height);
2989             cairo_fill (cr);
2990           }
2991       }
2992
2993   for (l = icon_view->priv->cell_list; l; l = l->next)
2994     {
2995       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
2996
2997       if (!info->cell->visible)
2998         continue;
2999
3000       gtk_icon_view_get_cell_area (icon_view, item, info, &cell_area);
3001
3002 #ifdef DEBUG_ICON_VIEW
3003       gdk_draw_rectangle (drawable,
3004                           GTK_WIDGET (icon_view)->style->black_gc,
3005                           FALSE,
3006                           x - item->x + cell_area.x,
3007                           y - item->y + cell_area.y,
3008                           cell_area.width, cell_area.height);
3009
3010       gtk_icon_view_get_cell_box (icon_view, item, info, &box);
3011
3012       gdk_draw_rectangle (drawable,
3013                           GTK_WIDGET (icon_view)->style->black_gc,
3014                           FALSE,
3015                           x - item->x + box.x,
3016                           y - item->y + box.y,
3017                           box.width, box.height);
3018 #endif
3019
3020       cell_area.x = x - item->x + cell_area.x;
3021       cell_area.y = y - item->y + cell_area.y;
3022
3023       gtk_cell_renderer_render (info->cell,
3024                                 drawable,
3025                                 GTK_WIDGET (icon_view),
3026                                 &cell_area, &cell_area, area, flags);
3027
3028     }
3029
3030   /* FIXME where to draw the focus with generic cell renderers ? */
3031   if (draw_focus &&
3032       GTK_WIDGET_HAS_FOCUS (icon_view) &&
3033       item == icon_view->priv->cursor_item)
3034     for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
3035       {
3036         GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
3037
3038         if (!info->cell->visible)
3039           continue;
3040
3041         if (icon_view->priv->cursor_cell < 0 &&
3042             (info->cell->mode != GTK_CELL_RENDERER_MODE_INERT ||
3043              GTK_IS_CELL_RENDERER_TEXT (info->cell)))
3044           icon_view->priv->cursor_cell = i;
3045
3046         if (i == icon_view->priv->cursor_cell)
3047           {
3048             gtk_icon_view_get_cell_box (icon_view, item, info, &box);
3049
3050             gtk_paint_focus (GTK_WIDGET (icon_view)->style,
3051                              drawable,
3052                              GTK_STATE_NORMAL,
3053                              area,
3054                              GTK_WIDGET (icon_view),
3055                              "icon_view",
3056                              x - item->x + box.x - padding,
3057                              y - item->y + box.y - padding,
3058                              box.width + 2 * padding,
3059                              box.height + 2 * padding);
3060             break;
3061           }
3062       }
3063 }
3064
3065 static void
3066 gtk_icon_view_paint_rubberband (GtkIconView     *icon_view,
3067                                 cairo_t         *cr,
3068                                 GdkRectangle    *area)
3069 {
3070   GdkRectangle rect;
3071   GdkRectangle rubber_rect;
3072   GdkColor *fill_color_gdk;
3073   guchar fill_color_alpha;
3074
3075   rubber_rect.x = MIN (icon_view->priv->rubberband_x1, icon_view->priv->rubberband_x2);
3076   rubber_rect.y = MIN (icon_view->priv->rubberband_y1, icon_view->priv->rubberband_y2);
3077   rubber_rect.width = ABS (icon_view->priv->rubberband_x1 - icon_view->priv->rubberband_x2) + 1;
3078   rubber_rect.height = ABS (icon_view->priv->rubberband_y1 - icon_view->priv->rubberband_y2) + 1;
3079
3080   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
3081     return;
3082
3083   gtk_widget_style_get (GTK_WIDGET (icon_view),
3084                         "selection-box-color", &fill_color_gdk,
3085                         "selection-box-alpha", &fill_color_alpha,
3086                         NULL);
3087
3088   if (!fill_color_gdk)
3089     fill_color_gdk = gdk_color_copy (&GTK_WIDGET (icon_view)->style->base[GTK_STATE_SELECTED]);
3090
3091   cairo_set_source_rgba (cr,
3092                          fill_color_gdk->red / 65535.,
3093                          fill_color_gdk->green / 65535.,
3094                          fill_color_gdk->blue / 65535.,
3095                          fill_color_alpha / 255.);
3096
3097   cairo_save (cr);
3098   gdk_cairo_rectangle (cr, &rect);
3099   cairo_clip (cr);
3100   cairo_paint (cr);
3101
3102   /* Draw the border without alpha */
3103   cairo_set_source_rgb (cr,
3104                         fill_color_gdk->red / 65535.,
3105                         fill_color_gdk->green / 65535.,
3106                         fill_color_gdk->blue / 65535.);
3107   cairo_rectangle (cr,
3108                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
3109                    rubber_rect.width - 1, rubber_rect.height - 1);
3110   cairo_stroke (cr);
3111   cairo_restore (cr);
3112
3113   gdk_color_free (fill_color_gdk);
3114 }
3115
3116 static void
3117 gtk_icon_view_queue_draw_path (GtkIconView *icon_view,
3118                                GtkTreePath *path)
3119 {
3120   GList *l;
3121   gint index;
3122
3123   index = gtk_tree_path_get_indices (path)[0];
3124
3125   for (l = icon_view->priv->items; l; l = l->next)
3126     {
3127       GtkIconViewItem *item = l->data;
3128
3129       if (item->index == index)
3130         {
3131           gtk_icon_view_queue_draw_item (icon_view, item);
3132           break;
3133         }
3134     }
3135 }
3136
3137 static void
3138 gtk_icon_view_queue_draw_item (GtkIconView     *icon_view,
3139                                GtkIconViewItem *item)
3140 {
3141   gint focus_width;
3142   GdkRectangle rect;
3143
3144   gtk_widget_style_get (GTK_WIDGET (icon_view),
3145                         "focus-line-width", &focus_width,
3146                         NULL);
3147
3148   rect.x = item->x - focus_width;
3149   rect.y = item->y - focus_width;
3150   rect.width = item->width + 2 * focus_width;
3151   rect.height = item->height + 2 * focus_width;
3152
3153   if (icon_view->priv->bin_window)
3154     gdk_window_invalidate_rect (icon_view->priv->bin_window, &rect, TRUE);
3155 }
3156
3157 static gboolean
3158 layout_callback (gpointer user_data)
3159 {
3160   GtkIconView *icon_view;
3161
3162   icon_view = GTK_ICON_VIEW (user_data);
3163
3164   icon_view->priv->layout_idle_id = 0;
3165
3166   gtk_icon_view_layout (icon_view);
3167
3168   return FALSE;
3169 }
3170
3171 static void
3172 gtk_icon_view_queue_layout (GtkIconView *icon_view)
3173 {
3174   if (icon_view->priv->layout_idle_id != 0)
3175     return;
3176
3177   icon_view->priv->layout_idle_id = gdk_threads_add_idle (layout_callback, icon_view);
3178 }
3179
3180 static void
3181 gtk_icon_view_set_cursor_item (GtkIconView     *icon_view,
3182                                GtkIconViewItem *item,
3183                                gint             cursor_cell)
3184 {
3185   AtkObject *obj;
3186   AtkObject *item_obj;
3187
3188   if (icon_view->priv->cursor_item == item &&
3189       (cursor_cell < 0 || cursor_cell == icon_view->priv->cursor_cell))
3190     return;
3191
3192   if (icon_view->priv->cursor_item != NULL)
3193     gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
3194
3195   icon_view->priv->cursor_item = item;
3196   if (cursor_cell >= 0)
3197     icon_view->priv->cursor_cell = cursor_cell;
3198
3199   gtk_icon_view_queue_draw_item (icon_view, item);
3200
3201   /* Notify that accessible focus object has changed */
3202   obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
3203   item_obj = atk_object_ref_accessible_child (obj, item->index);
3204
3205   if (item_obj != NULL)
3206     {
3207       atk_focus_tracker_notify (item_obj);
3208       g_object_unref (item_obj);
3209     }
3210 }
3211
3212
3213 static GtkIconViewItem *
3214 gtk_icon_view_item_new (void)
3215 {
3216   GtkIconViewItem *item;
3217
3218   item = g_new0 (GtkIconViewItem, 1);
3219
3220   item->width = -1;
3221   item->height = -1;
3222
3223   return item;
3224 }
3225
3226 static void
3227 gtk_icon_view_item_free (GtkIconViewItem *item)
3228 {
3229   g_return_if_fail (item != NULL);
3230
3231   g_free (item->before);
3232   g_free (item->after);
3233   g_free (item->box);
3234
3235   g_free (item);
3236 }
3237
3238
3239 static GtkIconViewItem *
3240 gtk_icon_view_get_item_at_coords (GtkIconView          *icon_view,
3241                                   gint                  x,
3242                                   gint                  y,
3243                                   gboolean              only_in_cell,
3244                                   GtkIconViewCellInfo **cell_at_pos)
3245 {
3246   GList *items, *l;
3247   GdkRectangle box;
3248
3249   for (items = icon_view->priv->items; items; items = items->next)
3250     {
3251       GtkIconViewItem *item = items->data;
3252
3253       if (x >= item->x - icon_view->priv->column_spacing/2 && x <= item->x + item->width + icon_view->priv->column_spacing/2 &&
3254           y >= item->y - icon_view->priv->row_spacing/2 && y <= item->y + item->height + icon_view->priv->row_spacing/2)
3255         {
3256           if (only_in_cell || cell_at_pos)
3257             {
3258               gtk_icon_view_set_cell_data (icon_view, item);
3259
3260               for (l = icon_view->priv->cell_list; l; l = l->next)
3261                 {
3262                   GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
3263
3264                   if (!info->cell->visible)
3265                     continue;
3266
3267                   gtk_icon_view_get_cell_box (icon_view, item, info, &box);
3268
3269                   if ((x >= box.x && x <= box.x + box.width &&
3270                        y >= box.y && y <= box.y + box.height) ||
3271                       (x >= box.x  &&
3272                        x <= box.x + box.width &&
3273                        y >= box.y &&
3274                        y <= box.y + box.height))
3275                     {
3276                       if (cell_at_pos)
3277                         *cell_at_pos = info;
3278
3279                       return item;
3280                     }
3281                 }
3282
3283               if (only_in_cell)
3284                 return NULL;
3285
3286               if (cell_at_pos)
3287                 *cell_at_pos = NULL;
3288             }
3289
3290           return item;
3291         }
3292     }
3293
3294   return NULL;
3295 }
3296
3297 static void
3298 gtk_icon_view_select_item (GtkIconView      *icon_view,
3299                            GtkIconViewItem  *item)
3300 {
3301   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
3302   g_return_if_fail (item != NULL);
3303
3304   if (item->selected)
3305     return;
3306
3307   if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
3308     return;
3309   else if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3310     gtk_icon_view_unselect_all_internal (icon_view);
3311
3312   item->selected = TRUE;
3313
3314   gtk_icon_view_queue_draw_item (icon_view, item);
3315
3316   g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3317 }
3318
3319
3320 static void
3321 gtk_icon_view_unselect_item (GtkIconView      *icon_view,
3322                              GtkIconViewItem  *item)
3323 {
3324   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
3325   g_return_if_fail (item != NULL);
3326
3327   if (!item->selected)
3328     return;
3329
3330   if (icon_view->priv->selection_mode == GTK_SELECTION_NONE ||
3331       icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
3332     return;
3333
3334   item->selected = FALSE;
3335
3336   g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3337
3338   gtk_icon_view_queue_draw_item (icon_view, item);
3339 }
3340
3341 static void
3342 verify_items (GtkIconView *icon_view)
3343 {
3344   GList *items;
3345   int i = 0;
3346
3347   for (items = icon_view->priv->items; items; items = items->next)
3348     {
3349       GtkIconViewItem *item = items->data;
3350
3351       if (item->index != i)
3352         g_error ("List item does not match its index: "
3353                  "item index %d and list index %d\n", item->index, i);
3354
3355       i++;
3356     }
3357 }
3358
3359 static void
3360 gtk_icon_view_row_changed (GtkTreeModel *model,
3361                            GtkTreePath  *path,
3362                            GtkTreeIter  *iter,
3363                            gpointer      data)
3364 {
3365   GtkIconViewItem *item;
3366   gint index;
3367   GtkIconView *icon_view;
3368
3369   icon_view = GTK_ICON_VIEW (data);
3370
3371   gtk_icon_view_stop_editing (icon_view, TRUE);
3372
3373   index = gtk_tree_path_get_indices(path)[0];
3374   item = g_list_nth_data (icon_view->priv->items, index);
3375
3376   gtk_icon_view_item_invalidate_size (item);
3377   gtk_icon_view_queue_layout (icon_view);
3378
3379   verify_items (icon_view);
3380 }
3381
3382 static void
3383 gtk_icon_view_row_inserted (GtkTreeModel *model,
3384                             GtkTreePath  *path,
3385                             GtkTreeIter  *iter,
3386                             gpointer      data)
3387 {
3388   gint index;
3389   GtkIconViewItem *item;
3390   gboolean iters_persist;
3391   GtkIconView *icon_view;
3392   GList *list;
3393
3394   icon_view = GTK_ICON_VIEW (data);
3395
3396   iters_persist = gtk_tree_model_get_flags (icon_view->priv->model) & GTK_TREE_MODEL_ITERS_PERSIST;
3397
3398   index = gtk_tree_path_get_indices(path)[0];
3399
3400   item = gtk_icon_view_item_new ();
3401
3402   if (iters_persist)
3403     item->iter = *iter;
3404
3405   item->index = index;
3406
3407   /* FIXME: We can be more efficient here,
3408      we can store a tail pointer and use that when
3409      appending (which is a rather common operation)
3410   */
3411   icon_view->priv->items = g_list_insert (icon_view->priv->items,
3412                                          item, index);
3413
3414   list = g_list_nth (icon_view->priv->items, index + 1);
3415   for (; list; list = list->next)
3416     {
3417       item = list->data;
3418
3419       item->index++;
3420     }
3421
3422   verify_items (icon_view);
3423
3424   gtk_icon_view_queue_layout (icon_view);
3425 }
3426
3427 static void
3428 gtk_icon_view_row_deleted (GtkTreeModel *model,
3429                            GtkTreePath  *path,
3430                            gpointer      data)
3431 {
3432   gint index;
3433   GtkIconView *icon_view;
3434   GtkIconViewItem *item;
3435   GList *list, *next;
3436   gboolean emit = FALSE;
3437
3438   icon_view = GTK_ICON_VIEW (data);
3439
3440   index = gtk_tree_path_get_indices(path)[0];
3441
3442   list = g_list_nth (icon_view->priv->items, index);
3443   item = list->data;
3444
3445   gtk_icon_view_stop_editing (icon_view, TRUE);
3446
3447   if (item == icon_view->priv->anchor_item)
3448     icon_view->priv->anchor_item = NULL;
3449
3450   if (item == icon_view->priv->cursor_item)
3451     icon_view->priv->cursor_item = NULL;
3452
3453   if (item->selected)
3454     emit = TRUE;
3455
3456   gtk_icon_view_item_free (item);
3457
3458   for (next = list->next; next; next = next->next)
3459     {
3460       item = next->data;
3461
3462       item->index--;
3463     }
3464
3465   icon_view->priv->items = g_list_delete_link (icon_view->priv->items, list);
3466
3467   verify_items (icon_view);
3468
3469   gtk_icon_view_queue_layout (icon_view);
3470
3471   if (emit)
3472     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3473 }
3474
3475 static void
3476 gtk_icon_view_rows_reordered (GtkTreeModel *model,
3477                               GtkTreePath  *parent,
3478                               GtkTreeIter  *iter,
3479                               gint         *new_order,
3480                               gpointer      data)
3481 {
3482   int i;
3483   int length;
3484   GtkIconView *icon_view;
3485   GList *items = NULL, *list;
3486   GtkIconViewItem **item_array;
3487   gint *order;
3488
3489   icon_view = GTK_ICON_VIEW (data);
3490
3491   gtk_icon_view_stop_editing (icon_view, TRUE);
3492
3493   length = gtk_tree_model_iter_n_children (model, NULL);
3494
3495   order = g_new (gint, length);
3496   for (i = 0; i < length; i++)
3497     order [new_order[i]] = i;
3498
3499   item_array = g_new (GtkIconViewItem *, length);
3500   for (i = 0, list = icon_view->priv->items; list != NULL; list = list->next, i++)
3501     item_array[order[i]] = list->data;
3502   g_free (order);
3503
3504   for (i = length - 1; i >= 0; i--)
3505     {
3506       item_array[i]->index = i;
3507       items = g_list_prepend (items, item_array[i]);
3508     }
3509
3510   g_free (item_array);
3511   g_list_free (icon_view->priv->items);
3512   icon_view->priv->items = items;
3513
3514   gtk_icon_view_queue_layout (icon_view);
3515
3516   verify_items (icon_view);
3517 }
3518
3519 static void
3520 gtk_icon_view_build_items (GtkIconView *icon_view)
3521 {
3522   GtkTreeIter iter;
3523   int i;
3524   gboolean iters_persist;
3525   GList *items = NULL;
3526
3527   iters_persist = gtk_tree_model_get_flags (icon_view->priv->model) & GTK_TREE_MODEL_ITERS_PERSIST;
3528
3529   if (!gtk_tree_model_get_iter_first (icon_view->priv->model,
3530                                       &iter))
3531     return;
3532
3533   i = 0;
3534
3535   do
3536     {
3537       GtkIconViewItem *item = gtk_icon_view_item_new ();
3538
3539       if (iters_persist)
3540         item->iter = iter;
3541
3542       item->index = i;
3543
3544       i++;
3545
3546       items = g_list_prepend (items, item);
3547
3548     } while (gtk_tree_model_iter_next (icon_view->priv->model, &iter));
3549
3550   icon_view->priv->items = g_list_reverse (items);
3551 }
3552
3553 static void
3554 gtk_icon_view_add_move_binding (GtkBindingSet  *binding_set,
3555                                 guint           keyval,
3556                                 guint           modmask,
3557                                 GtkMovementStep step,
3558                                 gint            count)
3559 {
3560
3561   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
3562                                 I_("move_cursor"), 2,
3563                                 G_TYPE_ENUM, step,
3564                                 G_TYPE_INT, count);
3565
3566   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
3567                                 "move_cursor", 2,
3568                                 G_TYPE_ENUM, step,
3569                                 G_TYPE_INT, count);
3570
3571   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3572    return;
3573
3574   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
3575                                 "move_cursor", 2,
3576                                 G_TYPE_ENUM, step,
3577                                 G_TYPE_INT, count);
3578
3579   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
3580                                 "move_cursor", 2,
3581                                 G_TYPE_ENUM, step,
3582                                 G_TYPE_INT, count);
3583 }
3584
3585 static gboolean
3586 gtk_icon_view_real_move_cursor (GtkIconView     *icon_view,
3587                                 GtkMovementStep  step,
3588                                 gint             count)
3589 {
3590   GdkModifierType state;
3591
3592   g_return_val_if_fail (GTK_ICON_VIEW (icon_view), FALSE);
3593   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
3594                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
3595                         step == GTK_MOVEMENT_DISPLAY_LINES ||
3596                         step == GTK_MOVEMENT_PAGES ||
3597                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
3598
3599   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (icon_view)))
3600     return FALSE;
3601
3602   gtk_icon_view_stop_editing (icon_view, FALSE);
3603   gtk_widget_grab_focus (GTK_WIDGET (icon_view));
3604
3605   if (gtk_get_current_event_state (&state))
3606     {
3607       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3608         icon_view->priv->ctrl_pressed = TRUE;
3609       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
3610         icon_view->priv->shift_pressed = TRUE;
3611     }
3612   /* else we assume not pressed */
3613
3614   switch (step)
3615     {
3616     case GTK_MOVEMENT_LOGICAL_POSITIONS:
3617     case GTK_MOVEMENT_VISUAL_POSITIONS:
3618       gtk_icon_view_move_cursor_left_right (icon_view, count);
3619       break;
3620     case GTK_MOVEMENT_DISPLAY_LINES:
3621       gtk_icon_view_move_cursor_up_down (icon_view, count);
3622       break;
3623     case GTK_MOVEMENT_PAGES:
3624       gtk_icon_view_move_cursor_page_up_down (icon_view, count);
3625       break;
3626     case GTK_MOVEMENT_BUFFER_ENDS:
3627       gtk_icon_view_move_cursor_start_end (icon_view, count);
3628       break;
3629     default:
3630       g_assert_not_reached ();
3631     }
3632
3633   icon_view->priv->ctrl_pressed = FALSE;
3634   icon_view->priv->shift_pressed = FALSE;
3635
3636   return TRUE;
3637 }
3638
3639 static GtkIconViewItem *
3640 find_item (GtkIconView     *icon_view,
3641            GtkIconViewItem *current,
3642            gint             row_ofs,
3643            gint             col_ofs)
3644 {
3645   gint row, col;
3646   GList *items;
3647   GtkIconViewItem *item;
3648
3649   /* FIXME: this could be more efficient
3650    */
3651   row = current->row + row_ofs;
3652   col = current->col + col_ofs;
3653
3654   for (items = icon_view->priv->items; items; items = items->next)
3655     {
3656       item = items->data;
3657       if (item->row == row && item->col == col)
3658         return item;
3659     }
3660
3661   return NULL;
3662 }
3663
3664 static gint
3665 find_cell (GtkIconView     *icon_view,
3666            GtkIconViewItem *item,
3667            gint             cell,
3668            GtkOrientation   orientation,
3669            gint             step,
3670            gint            *count)
3671 {
3672   gint n_focusable;
3673   gint *focusable;
3674   gint first_text;
3675   gint current;
3676   gint i, k;
3677   GList *l;
3678
3679   if (icon_view->priv->orientation != orientation)
3680     return cell;
3681
3682   gtk_icon_view_set_cell_data (icon_view, item);
3683
3684   focusable = g_new0 (gint, icon_view->priv->n_cells);
3685   n_focusable = 0;
3686
3687   first_text = 0;
3688   current = 0;
3689   for (k = 0; k < 2; k++)
3690     for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
3691       {
3692         GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
3693
3694         if (info->pack == (k ? GTK_PACK_START : GTK_PACK_END))
3695           continue;
3696
3697         if (!info->cell->visible)
3698           continue;
3699
3700         if (GTK_IS_CELL_RENDERER_TEXT (info->cell))
3701           first_text = i;
3702
3703         if (info->cell->mode != GTK_CELL_RENDERER_MODE_INERT)
3704           {
3705             if (cell == i)
3706               current = n_focusable;
3707
3708             focusable[n_focusable] = i;
3709
3710             n_focusable++;
3711           }
3712       }
3713
3714   if (n_focusable == 0)
3715     focusable[n_focusable++] = first_text;
3716
3717   if (cell < 0)
3718     {
3719       current = step > 0 ? 0 : n_focusable - 1;
3720       cell = focusable[current];
3721     }
3722
3723   if (current + *count < 0)
3724     {
3725       cell = -1;
3726       *count = current + *count;
3727     }
3728   else if (current + *count > n_focusable - 1)
3729     {
3730       cell = -1;
3731       *count = current + *count - (n_focusable - 1);
3732     }
3733   else
3734     {
3735       cell = focusable[current + *count];
3736       *count = 0;
3737     }
3738
3739   g_free (focusable);
3740
3741   return cell;
3742 }
3743
3744 static GtkIconViewItem *
3745 find_item_page_up_down (GtkIconView     *icon_view,
3746                         GtkIconViewItem *current,
3747                         gint             count)
3748 {
3749   GList *item, *next;
3750   gint y, col;
3751
3752   col = current->col;
3753   y = current->y + count * icon_view->priv->vadjustment->page_size;
3754
3755   item = g_list_find (icon_view->priv->items, current);
3756   if (count > 0)
3757     {
3758       while (item)
3759         {
3760           for (next = item->next; next; next = next->next)
3761             {
3762               if (((GtkIconViewItem *)next->data)->col == col)
3763                 break;
3764             }
3765           if (!next || ((GtkIconViewItem *)next->data)->y > y)
3766             break;
3767
3768           item = next;
3769         }
3770     }
3771   else
3772     {
3773       while (item)
3774         {
3775           for (next = item->prev; next; next = next->prev)
3776             {
3777               if (((GtkIconViewItem *)next->data)->col == col)
3778                 break;
3779             }
3780           if (!next || ((GtkIconViewItem *)next->data)->y < y)
3781             break;
3782
3783           item = next;
3784         }
3785     }
3786
3787   if (item)
3788     return item->data;
3789
3790   return NULL;
3791 }
3792
3793 static gboolean
3794 gtk_icon_view_select_all_between (GtkIconView     *icon_view,
3795                                   GtkIconViewItem *anchor,
3796                                   GtkIconViewItem *cursor)
3797 {
3798   GList *items;
3799   GtkIconViewItem *item;
3800   gint row1, row2, col1, col2;
3801   gboolean dirty = FALSE;
3802
3803   if (anchor->row < cursor->row)
3804     {
3805       row1 = anchor->row;
3806       row2 = cursor->row;
3807     }
3808   else
3809     {
3810       row1 = cursor->row;
3811       row2 = anchor->row;
3812     }
3813
3814   if (anchor->col < cursor->col)
3815     {
3816       col1 = anchor->col;
3817       col2 = cursor->col;
3818     }
3819   else
3820     {
3821       col1 = cursor->col;
3822       col2 = anchor->col;
3823     }
3824
3825   for (items = icon_view->priv->items; items; items = items->next)
3826     {
3827       item = items->data;
3828
3829       if (row1 <= item->row && item->row <= row2 &&
3830           col1 <= item->col && item->col <= col2)
3831         {
3832           if (!item->selected)
3833             dirty = TRUE;
3834
3835           item->selected = TRUE;
3836
3837           gtk_icon_view_queue_draw_item (icon_view, item);
3838         }
3839     }
3840
3841   return dirty;
3842 }
3843
3844 static void
3845 gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
3846                                    gint         count)
3847 {
3848   GtkIconViewItem *item;
3849   gint cell;
3850   gboolean dirty = FALSE;
3851   gint step;
3852
3853   if (!GTK_WIDGET_HAS_FOCUS (icon_view))
3854     return;
3855
3856   if (!icon_view->priv->cursor_item)
3857     {
3858       GList *list;
3859
3860       if (count > 0)
3861         list = icon_view->priv->items;
3862       else
3863         list = g_list_last (icon_view->priv->items);
3864
3865       item = list ? list->data : NULL;
3866       cell = -1;
3867     }
3868   else
3869     {
3870       item = icon_view->priv->cursor_item;
3871       cell = icon_view->priv->cursor_cell;
3872       step = count > 0 ? 1 : -1;
3873       while (item)
3874         {
3875           cell = find_cell (icon_view, item, cell,
3876                             GTK_ORIENTATION_VERTICAL,
3877                             step, &count);
3878           if (count == 0)
3879             break;
3880
3881           item = find_item (icon_view, item, step, 0);
3882           count = count - step;
3883         }
3884     }
3885
3886   if (!item)
3887     {
3888       gtk_widget_error_bell (GTK_WIDGET (icon_view));
3889       return;
3890     }
3891
3892   if (icon_view->priv->ctrl_pressed ||
3893       !icon_view->priv->shift_pressed ||
3894       !icon_view->priv->anchor_item ||
3895       icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3896     icon_view->priv->anchor_item = item;
3897
3898   gtk_icon_view_set_cursor_item (icon_view, item, cell);
3899
3900   if (!icon_view->priv->ctrl_pressed &&
3901       icon_view->priv->selection_mode != GTK_SELECTION_NONE)
3902     {
3903       dirty = gtk_icon_view_unselect_all_internal (icon_view);
3904       dirty = gtk_icon_view_select_all_between (icon_view,
3905                                                 icon_view->priv->anchor_item,
3906                                                 item) || dirty;
3907     }
3908
3909   gtk_icon_view_scroll_to_item (icon_view, item);
3910
3911   if (dirty)
3912     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3913 }
3914
3915 static void
3916 gtk_icon_view_move_cursor_page_up_down (GtkIconView *icon_view,
3917                                         gint         count)
3918 {
3919   GtkIconViewItem *item;
3920   gboolean dirty = FALSE;
3921
3922   if (!GTK_WIDGET_HAS_FOCUS (icon_view))
3923     return;
3924
3925   if (!icon_view->priv->cursor_item)
3926     {
3927       GList *list;
3928
3929       if (count > 0)
3930         list = icon_view->priv->items;
3931       else
3932         list = g_list_last (icon_view->priv->items);
3933
3934       item = list ? list->data : NULL;
3935     }
3936   else
3937     item = find_item_page_up_down (icon_view,
3938                                    icon_view->priv->cursor_item,
3939                                    count);
3940
3941   if (item == icon_view->priv->cursor_item)
3942     gtk_widget_error_bell (GTK_WIDGET (icon_view));
3943
3944   if (!item)
3945     return;
3946
3947   if (icon_view->priv->ctrl_pressed ||
3948       !icon_view->priv->shift_pressed ||
3949       !icon_view->priv->anchor_item ||
3950       icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3951     icon_view->priv->anchor_item = item;
3952
3953   gtk_icon_view_set_cursor_item (icon_view, item, -1);
3954
3955   if (!icon_view->priv->ctrl_pressed &&
3956       icon_view->priv->selection_mode != GTK_SELECTION_NONE)
3957     {
3958       dirty = gtk_icon_view_unselect_all_internal (icon_view);
3959       dirty = gtk_icon_view_select_all_between (icon_view,
3960                                                 icon_view->priv->anchor_item,
3961                                                 item) || dirty;
3962     }
3963
3964   gtk_icon_view_scroll_to_item (icon_view, item);
3965
3966   if (dirty)
3967     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3968 }
3969
3970 static void
3971 gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
3972                                       gint         count)
3973 {
3974   GtkIconViewItem *item;
3975   gint cell = -1;
3976   gboolean dirty = FALSE;
3977   gint step;
3978
3979   if (!GTK_WIDGET_HAS_FOCUS (icon_view))
3980     return;
3981
3982   if (!icon_view->priv->cursor_item)
3983     {
3984       GList *list;
3985
3986       if (count > 0)
3987         list = icon_view->priv->items;
3988       else
3989         list = g_list_last (icon_view->priv->items);
3990
3991       item = list ? list->data : NULL;
3992     }
3993   else
3994     {
3995       item = icon_view->priv->cursor_item;
3996       cell = icon_view->priv->cursor_cell;
3997       step = count > 0 ? 1 : -1;
3998       while (item)
3999         {
4000           cell = find_cell (icon_view, item, cell,
4001                             GTK_ORIENTATION_HORIZONTAL,
4002                             step, &count);
4003           if (count == 0)
4004             break;
4005
4006           item = find_item (icon_view, item, 0, step);
4007           count = count - step;
4008         }
4009     }
4010
4011   if (!item)
4012     {
4013       gtk_widget_error_bell (GTK_WIDGET (icon_view));
4014       return;
4015     }
4016
4017   if (icon_view->priv->ctrl_pressed ||
4018       !icon_view->priv->shift_pressed ||
4019       !icon_view->priv->anchor_item ||
4020       icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
4021     icon_view->priv->anchor_item = item;
4022
4023   gtk_icon_view_set_cursor_item (icon_view, item, cell);
4024
4025   if (!icon_view->priv->ctrl_pressed &&
4026       icon_view->priv->selection_mode != GTK_SELECTION_NONE)
4027     {
4028       dirty = gtk_icon_view_unselect_all_internal (icon_view);
4029       dirty = gtk_icon_view_select_all_between (icon_view,
4030                                                 icon_view->priv->anchor_item,
4031                                                 item) || dirty;
4032     }
4033
4034   gtk_icon_view_scroll_to_item (icon_view, item);
4035
4036   if (dirty)
4037     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
4038 }
4039
4040 static void
4041 gtk_icon_view_move_cursor_start_end (GtkIconView *icon_view,
4042                                      gint         count)
4043 {
4044   GtkIconViewItem *item;
4045   GList *list;
4046   gboolean dirty = FALSE;
4047
4048   if (!GTK_WIDGET_HAS_FOCUS (icon_view))
4049     return;
4050
4051   if (count < 0)
4052     list = icon_view->priv->items;
4053   else
4054     list = g_list_last (icon_view->priv->items);
4055
4056   item = list ? list->data : NULL;
4057
4058   if (item == icon_view->priv->cursor_item)
4059     gtk_widget_error_bell (GTK_WIDGET (icon_view));
4060
4061   if (!item)
4062     return;
4063
4064   if (icon_view->priv->ctrl_pressed ||
4065       !icon_view->priv->shift_pressed ||
4066       !icon_view->priv->anchor_item ||
4067       icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
4068     icon_view->priv->anchor_item = item;
4069
4070   gtk_icon_view_set_cursor_item (icon_view, item, -1);
4071
4072   if (!icon_view->priv->ctrl_pressed &&
4073       icon_view->priv->selection_mode != GTK_SELECTION_NONE)
4074     {
4075       dirty = gtk_icon_view_unselect_all_internal (icon_view);
4076       dirty = gtk_icon_view_select_all_between (icon_view,
4077                                                 icon_view->priv->anchor_item,
4078                                                 item) || dirty;
4079     }
4080
4081   gtk_icon_view_scroll_to_item (icon_view, item);
4082
4083   if (dirty)
4084     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
4085 }
4086
4087 /**
4088  * gtk_icon_view_scroll_to_path:
4089  * @icon_view: A #GtkIconView.
4090  * @path: The path of the item to move to.
4091  * @use_align: whether to use alignment arguments, or %FALSE.
4092  * @row_align: The vertical alignment of the item specified by @path.
4093  * @col_align: The horizontal alignment of the item specified by @path.
4094  *
4095  * Moves the alignments of @icon_view to the position specified by @path.
4096  * @row_align determines where the row is placed, and @col_align determines
4097  * where @column is placed.  Both are expected to be between 0.0 and 1.0.
4098  * 0.0 means left/top alignment, 1.0 means right/bottom alignment, 0.5 means
4099  * center.
4100  *
4101  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
4102  * tree does the minimum amount of work to scroll the item onto the screen.
4103  * This means that the item will be scrolled to the edge closest to its current
4104  * position.  If the item is currently visible on the screen, nothing is done.
4105  *
4106  * This function only works if the model is set, and @path is a valid row on
4107  * the model. If the model changes before the @icon_view is realized, the
4108  * centered path will be modified to reflect this change.
4109  *
4110  * Since: 2.8
4111  **/
4112 void
4113 gtk_icon_view_scroll_to_path (GtkIconView *icon_view,
4114                               GtkTreePath *path,
4115                               gboolean     use_align,
4116                               gfloat       row_align,
4117                               gfloat       col_align)
4118 {
4119   GtkIconViewItem *item = NULL;
4120
4121   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4122   g_return_if_fail (path != NULL);
4123   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
4124   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
4125
4126   if (gtk_tree_path_get_depth (path) > 0)
4127     item = g_list_nth_data (icon_view->priv->items,
4128                             gtk_tree_path_get_indices(path)[0]);
4129
4130   if (!GTK_WIDGET_REALIZED (icon_view) || !item || item->width < 0)
4131     {
4132       if (icon_view->priv->scroll_to_path)
4133         gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
4134
4135       icon_view->priv->scroll_to_path = NULL;
4136
4137       if (path)
4138         icon_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view), icon_view->priv->model, path);
4139
4140       icon_view->priv->scroll_to_use_align = use_align;
4141       icon_view->priv->scroll_to_row_align = row_align;
4142       icon_view->priv->scroll_to_col_align = col_align;
4143
4144       return;
4145     }
4146
4147   if (use_align)
4148     {
4149       gint x, y;
4150       gint focus_width;
4151       gfloat offset, value;
4152
4153       gtk_widget_style_get (GTK_WIDGET (icon_view),
4154                             "focus-line-width", &focus_width,
4155                             NULL);
4156
4157       gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4158
4159       offset =  y + item->y - focus_width -
4160         row_align * (GTK_WIDGET (icon_view)->allocation.height - item->height);
4161       value = CLAMP (icon_view->priv->vadjustment->value + offset,
4162                      icon_view->priv->vadjustment->lower,
4163                      icon_view->priv->vadjustment->upper - icon_view->priv->vadjustment->page_size);
4164       gtk_adjustment_set_value (icon_view->priv->vadjustment, value);
4165
4166       offset = x + item->x - focus_width -
4167         col_align * (GTK_WIDGET (icon_view)->allocation.width - item->width);
4168       value = CLAMP (icon_view->priv->hadjustment->value + offset,
4169                      icon_view->priv->hadjustment->lower,
4170                      icon_view->priv->hadjustment->upper - icon_view->priv->hadjustment->page_size);
4171       gtk_adjustment_set_value (icon_view->priv->hadjustment, value);
4172
4173       gtk_adjustment_changed (icon_view->priv->hadjustment);
4174       gtk_adjustment_changed (icon_view->priv->vadjustment);
4175     }
4176   else
4177     gtk_icon_view_scroll_to_item (icon_view, item);
4178 }
4179
4180
4181 static void
4182 gtk_icon_view_scroll_to_item (GtkIconView     *icon_view,
4183                               GtkIconViewItem *item)
4184 {
4185   gint x, y, width, height;
4186   gint focus_width;
4187
4188   gtk_widget_style_get (GTK_WIDGET (icon_view),
4189                         "focus-line-width", &focus_width,
4190                         NULL);
4191
4192   gdk_drawable_get_size (GDK_DRAWABLE (icon_view->priv->bin_window),
4193                          &width, &height);
4194   gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4195
4196   if (y + item->y - focus_width < 0)
4197     gtk_adjustment_set_value (icon_view->priv->vadjustment,
4198                               icon_view->priv->vadjustment->value + y + item->y - focus_width);
4199   else if (y + item->y + item->height + focus_width > GTK_WIDGET (icon_view)->allocation.height)
4200     gtk_adjustment_set_value (icon_view->priv->vadjustment,
4201                               icon_view->priv->vadjustment->value + y + item->y + item->height
4202                               + focus_width - GTK_WIDGET (icon_view)->allocation.height);
4203
4204   if (x + item->x - focus_width < 0)
4205     gtk_adjustment_set_value (icon_view->priv->hadjustment,
4206                               icon_view->priv->hadjustment->value + x + item->x - focus_width);
4207   else if (x + item->x + item->width + focus_width > GTK_WIDGET (icon_view)->allocation.width)
4208     gtk_adjustment_set_value (icon_view->priv->hadjustment,
4209                               icon_view->priv->hadjustment->value + x + item->x + item->width
4210                               + focus_width - GTK_WIDGET (icon_view)->allocation.width);
4211
4212   gtk_adjustment_changed (icon_view->priv->hadjustment);
4213   gtk_adjustment_changed (icon_view->priv->vadjustment);
4214 }
4215
4216 /* GtkCellLayout implementation */
4217 static GtkIconViewCellInfo *
4218 gtk_icon_view_get_cell_info (GtkIconView     *icon_view,
4219                              GtkCellRenderer *renderer)
4220 {
4221   GList *i;
4222
4223   for (i = icon_view->priv->cell_list; i; i = i->next)
4224     {
4225       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)i->data;
4226
4227       if (info->cell == renderer)
4228         return info;
4229     }
4230
4231   return NULL;
4232 }
4233
4234 static void
4235 gtk_icon_view_set_cell_data (GtkIconView     *icon_view,
4236                              GtkIconViewItem *item)
4237 {
4238   GList *i;
4239   gboolean iters_persist;
4240   GtkTreeIter iter;
4241
4242   iters_persist = gtk_tree_model_get_flags (icon_view->priv->model) & GTK_TREE_MODEL_ITERS_PERSIST;
4243
4244   if (!iters_persist)
4245     {
4246       GtkTreePath *path;
4247
4248       path = gtk_tree_path_new_from_indices (item->index, -1);
4249       if (!gtk_tree_model_get_iter (icon_view->priv->model, &iter, path))
4250         return;
4251       gtk_tree_path_free (path);
4252     }
4253   else
4254     iter = item->iter;
4255
4256   for (i = icon_view->priv->cell_list; i; i = i->next)
4257     {
4258       GSList *j;
4259       GtkIconViewCellInfo *info = i->data;
4260
4261       g_object_freeze_notify (G_OBJECT (info->cell));
4262
4263       for (j = info->attributes; j && j->next; j = j->next->next)
4264         {
4265           gchar *property = j->data;
4266           gint column = GPOINTER_TO_INT (j->next->data);
4267           GValue value = {0, };
4268
4269           gtk_tree_model_get_value (icon_view->priv->model, &iter,
4270                                     column, &value);
4271           g_object_set_property (G_OBJECT (info->cell),
4272                                  property, &value);
4273           g_value_unset (&value);
4274         }
4275
4276       if (info->func)
4277         (* info->func) (GTK_CELL_LAYOUT (icon_view),
4278                         info->cell,
4279                         icon_view->priv->model,
4280                         &iter,
4281                         info->func_data);
4282
4283       g_object_thaw_notify (G_OBJECT (info->cell));
4284     }
4285 }
4286
4287 static void
4288 free_cell_attributes (GtkIconViewCellInfo *info)
4289 {
4290   GSList *list;
4291
4292   list = info->attributes;
4293   while (list && list->next)
4294     {
4295       g_free (list->data);
4296       list = list->next->next;
4297     }
4298
4299   g_slist_free (info->attributes);
4300   info->attributes = NULL;
4301 }
4302
4303 static void
4304 free_cell_info (GtkIconViewCellInfo *info)
4305 {
4306   free_cell_attributes (info);
4307
4308   g_object_unref (info->cell);
4309
4310   if (info->destroy)
4311     (* info->destroy) (info->func_data);
4312
4313   g_free (info);
4314 }
4315
4316 static void
4317 gtk_icon_view_cell_layout_pack_start (GtkCellLayout   *layout,
4318                                       GtkCellRenderer *renderer,
4319                                       gboolean         expand)
4320 {
4321   GtkIconViewCellInfo *info;
4322   GtkIconView *icon_view = GTK_ICON_VIEW (layout);
4323
4324   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
4325   g_return_if_fail (!gtk_icon_view_get_cell_info (icon_view, renderer));
4326
4327   g_object_ref_sink (renderer);
4328
4329   info = g_new0 (GtkIconViewCellInfo, 1);
4330   info->cell = renderer;
4331   info->expand = expand ? TRUE : FALSE;
4332   info->pack = GTK_PACK_START;
4333   info->position = icon_view->priv->n_cells;
4334
4335   icon_view->priv->cell_list = g_list_append (icon_view->priv->cell_list, info);
4336   icon_view->priv->n_cells++;
4337 }
4338
4339 static void
4340 gtk_icon_view_cell_layout_pack_end (GtkCellLayout   *layout,
4341                                     GtkCellRenderer *renderer,
4342                                     gboolean         expand)
4343 {
4344   GtkIconViewCellInfo *info;
4345   GtkIconView *icon_view = GTK_ICON_VIEW (layout);
4346
4347   g_return_if_fail (GTK_IS_CELL_RENDERER (renderer));
4348   g_return_if_fail (!gtk_icon_view_get_cell_info (icon_view, renderer));
4349
4350   g_object_ref_sink (renderer);
4351
4352   info = g_new0 (GtkIconViewCellInfo, 1);
4353   info->cell = renderer;
4354   info->expand = expand ? TRUE : FALSE;
4355   info->pack = GTK_PACK_END;
4356   info->position = icon_view->priv->n_cells;
4357
4358   icon_view->priv->cell_list = g_list_append (icon_view->priv->cell_list, info);
4359   icon_view->priv->n_cells++;
4360 }
4361
4362 static void
4363 gtk_icon_view_cell_layout_add_attribute (GtkCellLayout   *layout,
4364                                          GtkCellRenderer *renderer,
4365                                          const gchar     *attribute,
4366                                          gint             column)
4367 {
4368   GtkIconViewCellInfo *info;
4369   GtkIconView *icon_view = GTK_ICON_VIEW (layout);
4370
4371   info = gtk_icon_view_get_cell_info (icon_view, renderer);
4372   g_return_if_fail (info != NULL);
4373
4374   info->attributes = g_slist_prepend (info->attributes,
4375                                       GINT_TO_POINTER (column));
4376   info->attributes = g_slist_prepend (info->attributes,
4377                                       g_strdup (attribute));
4378 }
4379
4380 static void
4381 gtk_icon_view_cell_layout_clear (GtkCellLayout *layout)
4382 {
4383   GtkIconView *icon_view = GTK_ICON_VIEW (layout);
4384
4385   while (icon_view->priv->cell_list)
4386     {
4387       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)icon_view->priv->cell_list->data;
4388       free_cell_info (info);
4389       icon_view->priv->cell_list = g_list_delete_link (icon_view->priv->cell_list,
4390                                                        icon_view->priv->cell_list);
4391     }
4392
4393   icon_view->priv->n_cells = 0;
4394 }
4395
4396 static void
4397 gtk_icon_view_cell_layout_set_cell_data_func (GtkCellLayout         *layout,
4398                                               GtkCellRenderer       *cell,
4399                                               GtkCellLayoutDataFunc  func,
4400                                               gpointer               func_data,
4401                                               GDestroyNotify         destroy)
4402 {
4403   GtkIconViewCellInfo *info;
4404   GtkIconView *icon_view = GTK_ICON_VIEW (layout);
4405
4406   info = gtk_icon_view_get_cell_info (icon_view, cell);
4407   g_return_if_fail (info != NULL);
4408
4409   if (info->destroy)
4410     {
4411       GDestroyNotify d = info->destroy;
4412
4413       info->destroy = NULL;
4414       d (info->func_data);
4415     }
4416
4417   info->func = func;
4418   info->func_data = func_data;
4419   info->destroy = destroy;
4420 }
4421
4422 static void
4423 gtk_icon_view_cell_layout_clear_attributes (GtkCellLayout   *layout,
4424                                             GtkCellRenderer *renderer)
4425 {
4426   GtkIconViewCellInfo *info;
4427
4428   info = gtk_icon_view_get_cell_info (GTK_ICON_VIEW (layout), renderer);
4429   if (info != NULL)
4430     free_cell_attributes (info);
4431 }
4432
4433 static void
4434 gtk_icon_view_cell_layout_reorder (GtkCellLayout   *layout,
4435                                    GtkCellRenderer *cell,
4436                                    gint             position)
4437 {
4438   GtkIconView *icon_view;
4439   GList *link, *l;
4440   GtkIconViewCellInfo *info;
4441   gint i;
4442
4443   icon_view = GTK_ICON_VIEW (layout);
4444
4445   g_return_if_fail (GTK_IS_CELL_RENDERER (cell));
4446
4447   info = gtk_icon_view_get_cell_info (icon_view, cell);
4448
4449   g_return_if_fail (info != NULL);
4450   g_return_if_fail (position >= 0);
4451
4452   link = g_list_find (icon_view->priv->cell_list, info);
4453
4454   g_return_if_fail (link != NULL);
4455
4456   icon_view->priv->cell_list = g_list_remove_link (icon_view->priv->cell_list,
4457                                                   link);
4458   icon_view->priv->cell_list = g_list_insert (icon_view->priv->cell_list,
4459                                              info, position);
4460
4461   for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
4462     {
4463       info = l->data;
4464
4465       info->position = i;
4466     }
4467
4468   gtk_widget_queue_draw (GTK_WIDGET (icon_view));
4469 }
4470
4471 static GList *
4472 gtk_icon_view_cell_layout_get_cells (GtkCellLayout *layout)
4473 {
4474   GtkIconView *icon_view = (GtkIconView *)layout;
4475   GList *retval = NULL, *l;
4476
4477   for (l = icon_view->priv->cell_list; l; l = l->next)
4478     {
4479       GtkIconViewCellInfo *info = (GtkIconViewCellInfo *)l->data;
4480
4481       retval = g_list_prepend (retval, info->cell);
4482     }
4483
4484   return g_list_reverse (retval);
4485 }
4486
4487 /* Public API */
4488
4489
4490 /**
4491  * gtk_icon_view_new:
4492  *
4493  * Creates a new #GtkIconView widget
4494  *
4495  * Return value: A newly created #GtkIconView widget
4496  *
4497  * Since: 2.6
4498  **/
4499 GtkWidget *
4500 gtk_icon_view_new (void)
4501 {
4502   return g_object_new (GTK_TYPE_ICON_VIEW, NULL);
4503 }
4504
4505 /**
4506  * gtk_icon_view_new_with_model:
4507  * @model: The model.
4508  *
4509  * Creates a new #GtkIconView widget with the model @model.
4510  *
4511  * Return value: A newly created #GtkIconView widget.
4512  *
4513  * Since: 2.6
4514  **/
4515 GtkWidget *
4516 gtk_icon_view_new_with_model (GtkTreeModel *model)
4517 {
4518   return g_object_new (GTK_TYPE_ICON_VIEW, "model", model, NULL);
4519 }
4520
4521 /**
4522  * gtk_icon_view_convert_widget_to_bin_window_coords:
4523  * @wx: X coordinate relative to the widget
4524  * @wy: Y coordinate relative to the widget
4525  * @bx: return location for bin_window X coordinate
4526  * @by: return location for bin_window Y coordinate
4527  *
4528  * Converts widget coordinates to coordinates for the bin_window,
4529  * as expected by e.g. gtk_icon_view_get_path_at_pos().
4530  *
4531  * Since: 2.12
4532  */
4533 void
4534 gtk_icon_view_convert_widget_to_bin_window_coords (GtkIconView *icon_view,
4535                                                    gint         wx,
4536                                                    gint         wy,
4537                                                    gint        *bx,
4538                                                    gint        *by)
4539 {
4540   gint x, y;
4541
4542   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4543
4544   if (icon_view->priv->bin_window)
4545     gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4546   else
4547     x = y = 0;
4548
4549   if (bx)
4550     *bx = wx - x;
4551   if (by)
4552     *by = wy - y;
4553 }
4554
4555 /**
4556  * gtk_icon_view_get_path_at_pos:
4557  * @icon_view: A #GtkIconView.
4558  * @x: The x position to be identified
4559  * @y: The y position to be identified
4560  *
4561  * Finds the path at the point (@x, @y), relative to bin_window coordinates.
4562  * See gtk_icon_view_get_item_at_pos(), if you are also interested in
4563  * the cell at the specified position.
4564  * See gtk_icon_view_convert_widget_to_bin_window_coords() for converting
4565  * widget coordinates to bin_window coordinates.
4566  *
4567  * Return value: The #GtkTreePath corresponding to the icon or %NULL
4568  * if no icon exists at that position.
4569  *
4570  * Since: 2.6
4571  **/
4572 GtkTreePath *
4573 gtk_icon_view_get_path_at_pos (GtkIconView *icon_view,
4574                                gint         x,
4575                                gint         y)
4576 {
4577   GtkIconViewItem *item;
4578   GtkTreePath *path;
4579   gint px, py;
4580
4581   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
4582
4583   item = gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, NULL);
4584
4585   if (!item)
4586     return NULL;
4587
4588   path = gtk_tree_path_new_from_indices (item->index, -1);
4589
4590   return path;
4591 }
4592
4593 /**
4594  * gtk_icon_view_get_item_at_pos:
4595  * @icon_view: A #GtkIconView.
4596  * @x: The x position to be identified
4597  * @y: The y position to be identified
4598  * @path: Return location for the path, or %NULL
4599  * @cell: Return location for the renderer responsible for the cell
4600  *   at (@x, @y), or %NULL
4601  *
4602  * Finds the path at the point (@x, @y), relative to bin_window coordinates.
4603  * In contrast to gtk_icon_view_get_path_at_pos(), this function also
4604  * obtains the cell at the specified position. The returned path should
4605  * be freed with gtk_tree_path_free().
4606  * See gtk_icon_view_convert_widget_to_bin_window_coords() for converting
4607  * widget coordinates to bin_window coordinates.
4608  *
4609  * Return value: %TRUE if an item exists at the specified position
4610  *
4611  * Since: 2.8
4612  **/
4613 gboolean
4614 gtk_icon_view_get_item_at_pos (GtkIconView      *icon_view,
4615                                gint              x,
4616                                gint              y,
4617                                GtkTreePath     **path,
4618                                GtkCellRenderer **cell)
4619 {
4620   GtkIconViewItem *item;
4621   GtkIconViewCellInfo *info;
4622
4623   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4624
4625   item = gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, &info);
4626
4627   if (path != NULL)
4628     {
4629       if (item != NULL)
4630         *path = gtk_tree_path_new_from_indices (item->index, -1);
4631       else
4632         *path = NULL;
4633     }
4634
4635   if (cell != NULL)
4636     {
4637       if (info != NULL)
4638         *cell = info->cell;
4639       else
4640         *cell = NULL;
4641     }
4642
4643   return (item != NULL);
4644 }
4645
4646
4647 /**
4648  * gtk_icon_view_get_visible_range:
4649  * @icon_view: A #GtkIconView
4650  * @start_path: Return location for start of region, or %NULL
4651  * @end_path: Return location for end of region, or %NULL
4652  *
4653  * Sets @start_path and @end_path to be the first and last visible path.
4654  * Note that there may be invisible paths in between.
4655  *
4656  * Both paths should be freed with gtk_tree_path_free() after use.
4657  *
4658  * Return value: %TRUE, if valid paths were placed in @start_path and @end_path
4659  *
4660  * Since: 2.8
4661  **/
4662 gboolean
4663 gtk_icon_view_get_visible_range (GtkIconView  *icon_view,
4664                                  GtkTreePath **start_path,
4665                                  GtkTreePath **end_path)
4666 {
4667   gint start_index = -1;
4668   gint end_index = -1;
4669   GList *icons;
4670
4671   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4672
4673   if (icon_view->priv->hadjustment == NULL ||
4674       icon_view->priv->vadjustment == NULL)
4675     return FALSE;
4676
4677   if (start_path == NULL && end_path == NULL)
4678     return FALSE;
4679
4680   for (icons = icon_view->priv->items; icons; icons = icons->next)
4681     {
4682       GtkIconViewItem *item = icons->data;
4683
4684       if ((item->x + item->width >= (int)icon_view->priv->hadjustment->value) &&
4685           (item->y + item->height >= (int)icon_view->priv->vadjustment->value) &&
4686           (item->x <= (int) (icon_view->priv->hadjustment->value + icon_view->priv->hadjustment->page_size)) &&
4687           (item->y <= (int) (icon_view->priv->vadjustment->value + icon_view->priv->vadjustment->page_size)))
4688         {
4689           if (start_index == -1)
4690             start_index = item->index;
4691           end_index = item->index;
4692         }
4693     }
4694
4695   if (start_path && start_index != -1)
4696     *start_path = gtk_tree_path_new_from_indices (start_index, -1);
4697   if (end_path && end_index != -1)
4698     *end_path = gtk_tree_path_new_from_indices (end_index, -1);
4699
4700   return start_index != -1;
4701 }
4702
4703 /**
4704  * gtk_icon_view_selected_foreach:
4705  * @icon_view: A #GtkIconView.
4706  * @func: The funcion to call for each selected icon.
4707  * @data: User data to pass to the function.
4708  *
4709  * Calls a function for each selected icon. Note that the model or
4710  * selection cannot be modified from within this function.
4711  *
4712  * Since: 2.6
4713  **/
4714 void
4715 gtk_icon_view_selected_foreach (GtkIconView           *icon_view,
4716                                 GtkIconViewForeachFunc func,
4717                                 gpointer               data)
4718 {
4719   GList *list;
4720
4721   for (list = icon_view->priv->items; list; list = list->next)
4722     {
4723       GtkIconViewItem *item = list->data;
4724       GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
4725
4726       if (item->selected)
4727         (* func) (icon_view, path, data);
4728
4729       gtk_tree_path_free (path);
4730     }
4731 }
4732
4733 /**
4734  * gtk_icon_view_set_selection_mode:
4735  * @icon_view: A #GtkIconView.
4736  * @mode: The selection mode
4737  *
4738  * Sets the selection mode of the @icon_view.
4739  *
4740  * Since: 2.6
4741  **/
4742 void
4743 gtk_icon_view_set_selection_mode (GtkIconView      *icon_view,
4744                                   GtkSelectionMode  mode)
4745 {
4746   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4747
4748   if (mode == icon_view->priv->selection_mode)
4749     return;
4750
4751   if (mode == GTK_SELECTION_NONE ||
4752       icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
4753     gtk_icon_view_unselect_all (icon_view);
4754
4755   icon_view->priv->selection_mode = mode;
4756
4757   g_object_notify (G_OBJECT (icon_view), "selection-mode");
4758 }
4759
4760 /**
4761  * gtk_icon_view_get_selection_mode:
4762  * @icon_view: A #GtkIconView.
4763  *
4764  * Gets the selection mode of the @icon_view.
4765  *
4766  * Return value: the current selection mode
4767  *
4768  * Since: 2.6
4769  **/
4770 GtkSelectionMode
4771 gtk_icon_view_get_selection_mode (GtkIconView *icon_view)
4772 {
4773   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), GTK_SELECTION_SINGLE);
4774
4775   return icon_view->priv->selection_mode;
4776 }
4777
4778 /**
4779  * gtk_icon_view_set_model:
4780  * @icon_view: A #GtkIconView.
4781  * @model: The model.
4782  *
4783  * Sets the model for a #GtkIconView.
4784  * If the @icon_view already has a model set, it will remove
4785  * it before setting the new model.  If @model is %NULL, then
4786  * it will unset the old model.
4787  *
4788  * Since: 2.6
4789  **/
4790 void
4791 gtk_icon_view_set_model (GtkIconView *icon_view,
4792                          GtkTreeModel *model)
4793 {
4794   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4795   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
4796
4797   if (icon_view->priv->model == model)
4798     return;
4799
4800   if (icon_view->priv->scroll_to_path)
4801     {
4802       gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
4803       icon_view->priv->scroll_to_path = NULL;
4804     }
4805
4806   gtk_icon_view_stop_editing (icon_view, TRUE);
4807
4808   if (model)
4809     {
4810       GType column_type;
4811
4812       g_return_if_fail (gtk_tree_model_get_flags (model) & GTK_TREE_MODEL_LIST_ONLY);
4813
4814       if (icon_view->priv->pixbuf_column != -1)
4815         {
4816           column_type = gtk_tree_model_get_column_type (model,
4817                                                         icon_view->priv->pixbuf_column);
4818
4819           g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
4820         }
4821
4822       if (icon_view->priv->text_column != -1)
4823         {
4824           column_type = gtk_tree_model_get_column_type (model,
4825                                                         icon_view->priv->text_column);
4826
4827           g_return_if_fail (column_type == G_TYPE_STRING);
4828         }
4829
4830       if (icon_view->priv->markup_column != -1)
4831         {
4832           column_type = gtk_tree_model_get_column_type (model,
4833                                                         icon_view->priv->markup_column);
4834
4835           g_return_if_fail (column_type == G_TYPE_STRING);
4836         }
4837
4838     }
4839
4840   if (icon_view->priv->model)
4841     {
4842       g_signal_handlers_disconnect_by_func (icon_view->priv->model,
4843                                             gtk_icon_view_row_changed,
4844                                             icon_view);
4845       g_signal_handlers_disconnect_by_func (icon_view->priv->model,
4846                                             gtk_icon_view_row_inserted,
4847                                             icon_view);
4848       g_signal_handlers_disconnect_by_func (icon_view->priv->model,
4849                                             gtk_icon_view_row_deleted,
4850                                             icon_view);
4851       g_signal_handlers_disconnect_by_func (icon_view->priv->model,
4852                                             gtk_icon_view_rows_reordered,
4853                                             icon_view);
4854
4855       g_object_unref (icon_view->priv->model);
4856
4857       g_list_foreach (icon_view->priv->items, (GFunc)gtk_icon_view_item_free, NULL);
4858       g_list_free (icon_view->priv->items);
4859       icon_view->priv->items = NULL;
4860       icon_view->priv->anchor_item = NULL;
4861       icon_view->priv->cursor_item = NULL;
4862       icon_view->priv->last_single_clicked = NULL;
4863       icon_view->priv->width = 0;
4864       icon_view->priv->height = 0;
4865     }
4866
4867   icon_view->priv->model = model;
4868
4869   if (icon_view->priv->model)
4870     {
4871       g_object_ref (icon_view->priv->model);
4872       g_signal_connect (icon_view->priv->model,
4873                         "row_changed",
4874                         G_CALLBACK (gtk_icon_view_row_changed),
4875                         icon_view);
4876       g_signal_connect (icon_view->priv->model,
4877                         "row_inserted",
4878                         G_CALLBACK (gtk_icon_view_row_inserted),
4879                         icon_view);
4880       g_signal_connect (icon_view->priv->model,
4881                         "row_deleted",
4882                         G_CALLBACK (gtk_icon_view_row_deleted),
4883                         icon_view);
4884       g_signal_connect (icon_view->priv->model,
4885                         "rows_reordered",
4886                         G_CALLBACK (gtk_icon_view_rows_reordered),
4887                         icon_view);
4888
4889       gtk_icon_view_build_items (icon_view);
4890
4891       gtk_icon_view_queue_layout (icon_view);
4892     }
4893
4894   g_object_notify (G_OBJECT (icon_view), "model");
4895
4896   if (GTK_WIDGET_REALIZED (icon_view))
4897     gtk_widget_queue_resize (GTK_WIDGET (icon_view));
4898 }
4899
4900 /**
4901  * gtk_icon_view_get_model:
4902  * @icon_view: a #GtkIconView
4903  *
4904  * Returns the model the #GtkIconView is based on.  Returns %NULL if the
4905  * model is unset.
4906  *
4907  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
4908  *
4909  * Since: 2.6
4910  **/
4911 GtkTreeModel *
4912 gtk_icon_view_get_model (GtkIconView *icon_view)
4913 {
4914   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
4915
4916   return icon_view->priv->model;
4917 }
4918
4919 static void
4920 update_text_cell (GtkIconView *icon_view)
4921 {
4922   GtkIconViewCellInfo *info;
4923   GList *l;
4924   gint i;
4925
4926   if (icon_view->priv->text_column == -1 &&
4927       icon_view->priv->markup_column == -1)
4928     {
4929       if (icon_view->priv->text_cell != -1)
4930         {
4931           if (icon_view->priv->pixbuf_cell > icon_view->priv->text_cell)
4932             icon_view->priv->pixbuf_cell--;
4933
4934           info = g_list_nth_data (icon_view->priv->cell_list,
4935                                   icon_view->priv->text_cell);
4936
4937           icon_view->priv->cell_list = g_list_remove (icon_view->priv->cell_list, info);
4938
4939           free_cell_info (info);
4940
4941           icon_view->priv->n_cells--;
4942           icon_view->priv->text_cell = -1;
4943         }
4944     }
4945   else
4946     {
4947       if (icon_view->priv->text_cell == -1)
4948         {
4949           GtkCellRenderer *cell = gtk_cell_renderer_text_new ();
4950           gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (icon_view), cell, FALSE);
4951           for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
4952             {
4953               info = l->data;
4954               if (info->cell == cell)
4955                 {
4956                   icon_view->priv->text_cell = i;
4957                   break;
4958                 }
4959             }
4960         }
4961
4962       info = g_list_nth_data (icon_view->priv->cell_list,
4963                               icon_view->priv->text_cell);
4964
4965       if (icon_view->priv->markup_column != -1)
4966         gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
4967                                         info->cell,
4968                                         "markup", icon_view->priv->markup_column,
4969                                         NULL);
4970       else
4971         gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
4972                                         info->cell,
4973                                         "text", icon_view->priv->text_column,
4974                                         NULL);
4975
4976       if (icon_view->priv->orientation == GTK_ORIENTATION_VERTICAL)
4977         g_object_set (info->cell,
4978                       "alignment", PANGO_ALIGN_CENTER,
4979                       "wrap-mode", PANGO_WRAP_WORD_CHAR,
4980                       "xalign", 0.0,
4981                       "yalign", 0.0,
4982                       NULL);
4983       else
4984         g_object_set (info->cell,
4985                       "alignment", PANGO_ALIGN_LEFT,
4986                       "wrap-mode", PANGO_WRAP_WORD_CHAR,
4987                       "xalign", 0.0,
4988                       "yalign", 0.0,
4989                       NULL);
4990     }
4991 }
4992
4993 static void
4994 update_pixbuf_cell (GtkIconView *icon_view)
4995 {
4996   GtkIconViewCellInfo *info;
4997   GList *l;
4998   gint i;
4999
5000   if (icon_view->priv->pixbuf_column == -1)
5001     {
5002       if (icon_view->priv->pixbuf_cell != -1)
5003         {
5004           if (icon_view->priv->text_cell > icon_view->priv->pixbuf_cell)
5005             icon_view->priv->text_cell--;
5006
5007           info = g_list_nth_data (icon_view->priv->cell_list,
5008                                   icon_view->priv->pixbuf_cell);
5009
5010           icon_view->priv->cell_list = g_list_remove (icon_view->priv->cell_list, info);
5011
5012           free_cell_info (info);
5013
5014           icon_view->priv->n_cells--;
5015           icon_view->priv->pixbuf_cell = -1;
5016         }
5017     }
5018   else
5019     {
5020       if (icon_view->priv->pixbuf_cell == -1)
5021         {
5022           GtkCellRenderer *cell = gtk_cell_renderer_pixbuf_new ();
5023
5024           gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_view), cell, FALSE);
5025           for (l = icon_view->priv->cell_list, i = 0; l; l = l->next, i++)
5026             {
5027               info = l->data;
5028               if (info->cell == cell)
5029                 {
5030                   icon_view->priv->pixbuf_cell = i;
5031                   break;
5032                 }
5033             }
5034         }
5035
5036         info = g_list_nth_data (icon_view->priv->cell_list,
5037                                 icon_view->priv->pixbuf_cell);
5038
5039         gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
5040                                         info->cell,
5041                                         "pixbuf", icon_view->priv->pixbuf_column,
5042                                         NULL);
5043
5044         if (icon_view->priv->orientation == GTK_ORIENTATION_VERTICAL)
5045           g_object_set (info->cell,
5046                         "follow-state", TRUE,
5047                         "xalign", 0.5,
5048                         "yalign", 1.0,
5049                         NULL);
5050         else
5051           g_object_set (info->cell,
5052                         "follow-state", TRUE,
5053                         "xalign", 0.0,
5054                         "yalign", 0.0,
5055                         NULL);
5056     }
5057 }
5058
5059 /**
5060  * gtk_icon_view_set_text_column:
5061  * @icon_view: A #GtkIconView.
5062  * @column: A column in the currently used model, or -1 to display no text
5063  *
5064  * Sets the column with text for @icon_view to be @column. The text
5065  * column must be of type #G_TYPE_STRING.
5066  *
5067  * Since: 2.6
5068  **/
5069 void
5070 gtk_icon_view_set_text_column (GtkIconView *icon_view,
5071                                gint          column)
5072 {
5073   if (column == icon_view->priv->text_column)
5074     return;
5075
5076   if (column == -1)
5077     icon_view->priv->text_column = -1;
5078   else
5079     {
5080       if (icon_view->priv->model != NULL)
5081         {
5082           GType column_type;
5083
5084           column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5085
5086           g_return_if_fail (column_type == G_TYPE_STRING);
5087         }
5088
5089       icon_view->priv->text_column = column;
5090     }
5091
5092   gtk_icon_view_stop_editing (icon_view, TRUE);
5093
5094   update_text_cell (icon_view);
5095
5096   gtk_icon_view_invalidate_sizes (icon_view);
5097   gtk_icon_view_queue_layout (icon_view);
5098
5099   g_object_notify (G_OBJECT (icon_view), "text-column");
5100 }
5101
5102 /**
5103  * gtk_icon_view_get_text_column:
5104  * @icon_view: A #GtkIconView.
5105  *
5106  * Returns the column with text for @icon_view.
5107  *
5108  * Returns: the text column, or -1 if it's unset.
5109  *
5110  * Since: 2.6
5111  */
5112 gint
5113 gtk_icon_view_get_text_column (GtkIconView  *icon_view)
5114 {
5115   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5116
5117   return icon_view->priv->text_column;
5118 }
5119
5120 /**
5121  * gtk_icon_view_set_markup_column:
5122  * @icon_view: A #GtkIconView.
5123  * @column: A column in the currently used model, or -1 to display no text
5124  *
5125  * Sets the column with markup information for @icon_view to be
5126  * @column. The markup column must be of type #G_TYPE_STRING.
5127  * If the markup column is set to something, it overrides
5128  * the text column set by gtk_icon_view_set_text_column().
5129  *
5130  * Since: 2.6
5131  **/
5132 void
5133 gtk_icon_view_set_markup_column (GtkIconView *icon_view,
5134                                  gint         column)
5135 {
5136   if (column == icon_view->priv->markup_column)
5137     return;
5138
5139   if (column == -1)
5140     icon_view->priv->markup_column = -1;
5141   else
5142     {
5143       if (icon_view->priv->model != NULL)
5144         {
5145           GType column_type;
5146
5147           column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5148
5149           g_return_if_fail (column_type == G_TYPE_STRING);
5150         }
5151
5152       icon_view->priv->markup_column = column;
5153     }
5154
5155   gtk_icon_view_stop_editing (icon_view, TRUE);
5156
5157   update_text_cell (icon_view);
5158
5159   gtk_icon_view_invalidate_sizes (icon_view);
5160   gtk_icon_view_queue_layout (icon_view);
5161
5162   g_object_notify (G_OBJECT (icon_view), "markup-column");
5163 }
5164
5165 /**
5166  * gtk_icon_view_get_markup_column:
5167  * @icon_view: A #GtkIconView.
5168  *
5169  * Returns the column with markup text for @icon_view.
5170  *
5171  * Returns: the markup column, or -1 if it's unset.
5172  *
5173  * Since: 2.6
5174  */
5175 gint
5176 gtk_icon_view_get_markup_column (GtkIconView  *icon_view)
5177 {
5178   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5179
5180   return icon_view->priv->markup_column;
5181 }
5182
5183 /**
5184  * gtk_icon_view_set_pixbuf_column:
5185  * @icon_view: A #GtkIconView.
5186  * @column: A column in the currently used model, or -1 to disable
5187  *
5188  * Sets the column with pixbufs for @icon_view to be @column. The pixbuf
5189  * column must be of type #GDK_TYPE_PIXBUF
5190  *
5191  * Since: 2.6
5192  **/
5193 void
5194 gtk_icon_view_set_pixbuf_column (GtkIconView *icon_view,
5195                                  gint         column)
5196 {
5197   if (column == icon_view->priv->pixbuf_column)
5198     return;
5199
5200   if (column == -1)
5201     icon_view->priv->pixbuf_column = -1;
5202   else
5203     {
5204       if (icon_view->priv->model != NULL)
5205         {
5206           GType column_type;
5207
5208           column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5209
5210           g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
5211         }
5212
5213       icon_view->priv->pixbuf_column = column;
5214     }
5215
5216   gtk_icon_view_stop_editing (icon_view, TRUE);
5217
5218   update_pixbuf_cell (icon_view);
5219
5220   gtk_icon_view_invalidate_sizes (icon_view);
5221   gtk_icon_view_queue_layout (icon_view);
5222
5223   g_object_notify (G_OBJECT (icon_view), "pixbuf-column");
5224
5225 }
5226
5227 /**
5228  * gtk_icon_view_get_pixbuf_column:
5229  * @icon_view: A #GtkIconView.
5230  *
5231  * Returns the column with pixbufs for @icon_view.
5232  *
5233  * Returns: the pixbuf column, or -1 if it's unset.
5234  *
5235  * Since: 2.6
5236  */
5237 gint
5238 gtk_icon_view_get_pixbuf_column (GtkIconView  *icon_view)
5239 {
5240   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5241
5242   return icon_view->priv->pixbuf_column;
5243 }
5244
5245 /**
5246  * gtk_icon_view_select_path:
5247  * @icon_view: A #GtkIconView.
5248  * @path: The #GtkTreePath to be selected.
5249  *
5250  * Selects the row at @path.
5251  *
5252  * Since: 2.6
5253  **/
5254 void
5255 gtk_icon_view_select_path (GtkIconView *icon_view,
5256                            GtkTreePath *path)
5257 {
5258   GtkIconViewItem *item = NULL;
5259
5260   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5261   g_return_if_fail (icon_view->priv->model != NULL);
5262   g_return_if_fail (path != NULL);
5263
5264   if (gtk_tree_path_get_depth (path) > 0)
5265     item = g_list_nth_data (icon_view->priv->items,
5266                             gtk_tree_path_get_indices(path)[0]);
5267
5268   if (item)
5269     gtk_icon_view_select_item (icon_view, item);
5270 }
5271
5272 /**
5273  * gtk_icon_view_unselect_path:
5274  * @icon_view: A #GtkIconView.
5275  * @path: The #GtkTreePath to be unselected.
5276  *
5277  * Unselects the row at @path.
5278  *
5279  * Since: 2.6
5280  **/
5281 void
5282 gtk_icon_view_unselect_path (GtkIconView *icon_view,
5283                              GtkTreePath *path)
5284 {
5285   GtkIconViewItem *item;
5286
5287   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5288   g_return_if_fail (icon_view->priv->model != NULL);
5289   g_return_if_fail (path != NULL);
5290
5291   item = g_list_nth_data (icon_view->priv->items,
5292                           gtk_tree_path_get_indices(path)[0]);
5293
5294   if (!item)
5295     return;
5296
5297   gtk_icon_view_unselect_item (icon_view, item);
5298 }
5299
5300 /**
5301  * gtk_icon_view_get_selected_items:
5302  * @icon_view: A #GtkIconView.
5303  *
5304  * Creates a list of paths of all selected items. Additionally, if you are
5305  * planning on modifying the model after calling this function, you may
5306  * want to convert the returned list into a list of #GtkTreeRowReference<!-- -->s.
5307  * To do this, you can use gtk_tree_row_reference_new().
5308  *
5309  * To free the return value, use:
5310  * <informalexample><programlisting>
5311  * g_list_foreach (list, gtk_tree_path_free, NULL);
5312  * g_list_free (list);
5313  * </programlisting></informalexample>
5314  *
5315  * Return value: A #GList containing a #GtkTreePath for each selected row.
5316  *
5317  * Since: 2.6
5318  **/
5319 GList *
5320 gtk_icon_view_get_selected_items (GtkIconView *icon_view)
5321 {
5322   GList *list;
5323   GList *selected = NULL;
5324
5325   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
5326
5327   for (list = icon_view->priv->items; list != NULL; list = list->next)
5328     {
5329       GtkIconViewItem *item = list->data;
5330
5331       if (item->selected)
5332         {
5333           GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
5334
5335           selected = g_list_prepend (selected, path);
5336         }
5337     }
5338
5339   return selected;
5340 }
5341
5342 /**
5343  * gtk_icon_view_select_all:
5344  * @icon_view: A #GtkIconView.
5345  *
5346  * Selects all the icons. @icon_view must has its selection mode set
5347  * to #GTK_SELECTION_MULTIPLE.
5348  *
5349  * Since: 2.6
5350  **/
5351 void
5352 gtk_icon_view_select_all (GtkIconView *icon_view)
5353 {
5354   GList *items;
5355   gboolean dirty = FALSE;
5356
5357   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5358
5359   if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
5360     return;
5361
5362   for (items = icon_view->priv->items; items; items = items->next)
5363     {
5364       GtkIconViewItem *item = items->data;
5365
5366       if (!item->selected)
5367         {
5368           dirty = TRUE;
5369           item->selected = TRUE;
5370           gtk_icon_view_queue_draw_item (icon_view, item);
5371         }
5372     }
5373
5374   if (dirty)
5375     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
5376 }
5377
5378 /**
5379  * gtk_icon_view_unselect_all:
5380  * @icon_view: A #GtkIconView.
5381  *
5382  * Unselects all the icons.
5383  *
5384  * Since: 2.6
5385  **/
5386 void
5387 gtk_icon_view_unselect_all (GtkIconView *icon_view)
5388 {
5389   gboolean dirty = FALSE;
5390
5391   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5392
5393   if (icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
5394     return;
5395
5396   dirty = gtk_icon_view_unselect_all_internal (icon_view);
5397
5398   if (dirty)
5399     g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
5400 }
5401
5402 /**
5403  * gtk_icon_view_path_is_selected:
5404  * @icon_view: A #GtkIconView.
5405  * @path: A #GtkTreePath to check selection on.
5406  *
5407  * Returns %TRUE if the icon pointed to by @path is currently
5408  * selected. If @path does not point to a valid location, %FALSE is returned.
5409  *
5410  * Return value: %TRUE if @path is selected.
5411  *
5412  * Since: 2.6
5413  **/
5414 gboolean
5415 gtk_icon_view_path_is_selected (GtkIconView *icon_view,
5416                                 GtkTreePath *path)
5417 {
5418   GtkIconViewItem *item;
5419
5420   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
5421   g_return_val_if_fail (icon_view->priv->model != NULL, FALSE);
5422   g_return_val_if_fail (path != NULL, FALSE);
5423
5424   item = g_list_nth_data (icon_view->priv->items,
5425                           gtk_tree_path_get_indices(path)[0]);
5426
5427   if (!item)
5428     return FALSE;
5429
5430   return item->selected;
5431 }
5432
5433 /**
5434  * gtk_icon_view_item_activated:
5435  * @icon_view: A #GtkIconView
5436  * @path: The #GtkTreePath to be activated
5437  *
5438  * Activates the item determined by @path.
5439  *
5440  * Since: 2.6
5441  **/
5442 void
5443 gtk_icon_view_item_activated (GtkIconView      *icon_view,
5444                               GtkTreePath      *path)
5445 {
5446   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5447   g_return_if_fail (path != NULL);
5448
5449   g_signal_emit (icon_view, icon_view_signals[ITEM_ACTIVATED], 0, path);
5450 }
5451
5452 /**
5453  * gtk_icon_view_set_orientation:
5454  * @icon_view: a #GtkIconView
5455  * @orientation: the relative position of texts and icons
5456  *
5457  * Sets the ::orientation property which determines whether the labels
5458  * are drawn beside the icons instead of below.
5459  *
5460  * Since: 2.6
5461  **/
5462 void
5463 gtk_icon_view_set_orientation (GtkIconView    *icon_view,
5464                                GtkOrientation  orientation)
5465 {
5466   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5467
5468   if (icon_view->priv->orientation != orientation)
5469     {
5470       icon_view->priv->orientation = orientation;
5471
5472       gtk_icon_view_stop_editing (icon_view, TRUE);
5473       gtk_icon_view_invalidate_sizes (icon_view);
5474       gtk_icon_view_queue_layout (icon_view);
5475
5476       update_text_cell (icon_view);
5477       update_pixbuf_cell (icon_view);
5478
5479       g_object_notify (G_OBJECT (icon_view), "orientation");
5480     }
5481 }
5482
5483 /**
5484  * gtk_icon_view_get_orientation:
5485  * @icon_view: a #GtkIconView
5486  *
5487  * Returns the value of the ::orientation property which determines
5488  * whether the labels are drawn beside the icons instead of below.
5489  *
5490  * Return value: the relative position of texts and icons
5491  *
5492  * Since: 2.6
5493  **/
5494 GtkOrientation
5495 gtk_icon_view_get_orientation (GtkIconView *icon_view)
5496 {
5497   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view),
5498                         GTK_ORIENTATION_VERTICAL);
5499
5500   return icon_view->priv->orientation;
5501 }
5502
5503 /**
5504  * gtk_icon_view_set_columns:
5505  * @icon_view: a #GtkIconView
5506  * @columns: the number of columns
5507  *
5508  * Sets the ::columns property which determines in how
5509  * many columns the icons are arranged. If @columns is
5510  * -1, the number of columns will be chosen automatically
5511  * to fill the available area.
5512  *
5513  * Since: 2.6
5514  */
5515 void
5516 gtk_icon_view_set_columns (GtkIconView *icon_view,
5517                            gint         columns)
5518 {
5519   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5520
5521   if (icon_view->priv->columns != columns)
5522     {
5523       icon_view->priv->columns = columns;
5524
5525       gtk_icon_view_stop_editing (icon_view, TRUE);
5526       gtk_icon_view_queue_layout (icon_view);
5527
5528       g_object_notify (G_OBJECT (icon_view), "columns");
5529     }
5530 }
5531
5532 /**
5533  * gtk_icon_view_get_columns:
5534  * @icon_view: a #GtkIconView
5535  *
5536  * Returns the value of the ::columns property.
5537  *
5538  * Return value: the number of columns, or -1
5539  *
5540  * Since: 2.6
5541  */
5542 gint
5543 gtk_icon_view_get_columns (GtkIconView *icon_view)
5544 {
5545   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5546
5547   return icon_view->priv->columns;
5548 }
5549
5550 /**
5551  * gtk_icon_view_set_item_width:
5552  * @icon_view: a #GtkIconView
5553  * @item_width: the width for each item
5554  *
5555  * Sets the ::item-width property which specifies the width
5556  * to use for each item. If it is set to -1, the icon view will
5557  * automatically determine a suitable item size.
5558  *
5559  * Since: 2.6
5560  */
5561 void
5562 gtk_icon_view_set_item_width (GtkIconView *icon_view,
5563                               gint         item_width)
5564 {
5565   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5566
5567   if (icon_view->priv->item_width != item_width)
5568     {
5569       icon_view->priv->item_width = item_width;
5570
5571       gtk_icon_view_stop_editing (icon_view, TRUE);
5572       gtk_icon_view_invalidate_sizes (icon_view);
5573       gtk_icon_view_queue_layout (icon_view);
5574
5575       update_text_cell (icon_view);
5576
5577       g_object_notify (G_OBJECT (icon_view), "item-width");
5578     }
5579 }
5580
5581 /**
5582  * gtk_icon_view_get_item_width:
5583  * @icon_view: a #GtkIconView
5584  *
5585  * Returns the value of the ::item-width property.
5586  *
5587  * Return value: the width of a single item, or -1
5588  *
5589  * Since: 2.6
5590  */
5591 gint
5592 gtk_icon_view_get_item_width (GtkIconView *icon_view)
5593 {
5594   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5595
5596   return icon_view->priv->item_width;
5597 }
5598
5599
5600 /**
5601  * gtk_icon_view_set_spacing:
5602  * @icon_view: a #GtkIconView
5603  * @spacing: the spacing
5604  *
5605  * Sets the ::spacing property which specifies the space
5606  * which is inserted between the cells (i.e. the icon and
5607  * the text) of an item.
5608  *
5609  * Since: 2.6
5610  */
5611 void
5612 gtk_icon_view_set_spacing (GtkIconView *icon_view,
5613                            gint         spacing)
5614 {
5615   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5616
5617   if (icon_view->priv->spacing != spacing)
5618     {
5619       icon_view->priv->spacing = spacing;
5620
5621       gtk_icon_view_stop_editing (icon_view, TRUE);
5622       gtk_icon_view_invalidate_sizes (icon_view);
5623       gtk_icon_view_queue_layout (icon_view);
5624
5625       g_object_notify (G_OBJECT (icon_view), "spacing");
5626     }
5627 }
5628
5629 /**
5630  * gtk_icon_view_get_spacing:
5631  * @icon_view: a #GtkIconView
5632  *
5633  * Returns the value of the ::spacing property.
5634  *
5635  * Return value: the space between cells
5636  *
5637  * Since: 2.6
5638  */
5639 gint
5640 gtk_icon_view_get_spacing (GtkIconView *icon_view)
5641 {
5642   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5643
5644   return icon_view->priv->spacing;
5645 }
5646
5647 /**
5648  * gtk_icon_view_set_row_spacing:
5649  * @icon_view: a #GtkIconView
5650  * @row_spacing: the row spacing
5651  *
5652  * Sets the ::row-spacing property which specifies the space
5653  * which is inserted between the rows of the icon view.
5654  *
5655  * Since: 2.6
5656  */
5657 void
5658 gtk_icon_view_set_row_spacing (GtkIconView *icon_view,
5659                                gint         row_spacing)
5660 {
5661   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5662
5663   if (icon_view->priv->row_spacing != row_spacing)
5664     {
5665       icon_view->priv->row_spacing = row_spacing;
5666
5667       gtk_icon_view_stop_editing (icon_view, TRUE);
5668       gtk_icon_view_invalidate_sizes (icon_view);
5669       gtk_icon_view_queue_layout (icon_view);
5670
5671       g_object_notify (G_OBJECT (icon_view), "row-spacing");
5672     }
5673 }
5674
5675 /**
5676  * gtk_icon_view_get_row_spacing:
5677  * @icon_view: a #GtkIconView
5678  *
5679  * Returns the value of the ::row-spacing property.
5680  *
5681  * Return value: the space between rows
5682  *
5683  * Since: 2.6
5684  */
5685 gint
5686 gtk_icon_view_get_row_spacing (GtkIconView *icon_view)
5687 {
5688   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5689
5690   return icon_view->priv->row_spacing;
5691 }
5692
5693 /**
5694  * gtk_icon_view_set_column_spacing:
5695  * @icon_view: a #GtkIconView
5696  * @column_spacing: the column spacing
5697  *
5698  * Sets the ::column-spacing property which specifies the space
5699  * which is inserted between the columns of the icon view.
5700  *
5701  * Since: 2.6
5702  */
5703 void
5704 gtk_icon_view_set_column_spacing (GtkIconView *icon_view,
5705                                   gint         column_spacing)
5706 {
5707   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5708
5709   if (icon_view->priv->column_spacing != column_spacing)
5710     {
5711       icon_view->priv->column_spacing = column_spacing;
5712
5713       gtk_icon_view_stop_editing (icon_view, TRUE);
5714       gtk_icon_view_invalidate_sizes (icon_view);
5715       gtk_icon_view_queue_layout (icon_view);
5716
5717       g_object_notify (G_OBJECT (icon_view), "column-spacing");
5718     }
5719 }
5720
5721 /**
5722  * gtk_icon_view_get_column_spacing:
5723  * @icon_view: a #GtkIconView
5724  *
5725  * Returns the value of the ::column-spacing property.
5726  *
5727  * Return value: the space between columns
5728  *
5729  * Since: 2.6
5730  */
5731 gint
5732 gtk_icon_view_get_column_spacing (GtkIconView *icon_view)
5733 {
5734   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5735
5736   return icon_view->priv->column_spacing;
5737 }
5738
5739 /**
5740  * gtk_icon_view_set_margin:
5741  * @icon_view: a #GtkIconView
5742  * @margin: the margin
5743  *
5744  * Sets the ::margin property which specifies the space
5745  * which is inserted at the top, bottom, left and right
5746  * of the icon view.
5747  *
5748  * Since: 2.6
5749  */
5750 void
5751 gtk_icon_view_set_margin (GtkIconView *icon_view,
5752                           gint         margin)
5753 {
5754   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5755
5756   if (icon_view->priv->margin != margin)
5757     {
5758       icon_view->priv->margin = margin;
5759
5760       gtk_icon_view_stop_editing (icon_view, TRUE);
5761       gtk_icon_view_invalidate_sizes (icon_view);
5762       gtk_icon_view_queue_layout (icon_view);
5763
5764       g_object_notify (G_OBJECT (icon_view), "margin");
5765     }
5766 }
5767
5768 /**
5769  * gtk_icon_view_get_margin:
5770  * @icon_view: a #GtkIconView
5771  *
5772  * Returns the value of the ::margin property.
5773  *
5774  * Return value: the space at the borders
5775  *
5776  * Since: 2.6
5777  */
5778 gint
5779 gtk_icon_view_get_margin (GtkIconView *icon_view)
5780 {
5781   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5782
5783   return icon_view->priv->margin;
5784 }
5785
5786
5787 /* Get/set whether drag_motion requested the drag data and
5788  * drag_data_received should thus not actually insert the data,
5789  * since the data doesn't result from a drop.
5790  */
5791 static void
5792 set_status_pending (GdkDragContext *context,
5793                     GdkDragAction   suggested_action)
5794 {
5795   g_object_set_data (G_OBJECT (context),
5796                      I_("gtk-icon-view-status-pending"),
5797                      GINT_TO_POINTER (suggested_action));
5798 }
5799
5800 static GdkDragAction
5801 get_status_pending (GdkDragContext *context)
5802 {
5803   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
5804                                              "gtk-icon-view-status-pending"));
5805 }
5806
5807 static void
5808 unset_reorderable (GtkIconView *icon_view)
5809 {
5810   if (icon_view->priv->reorderable)
5811     {
5812       icon_view->priv->reorderable = FALSE;
5813       g_object_notify (G_OBJECT (icon_view), "reorderable");
5814     }
5815 }
5816
5817 static void
5818 clear_source_info (GtkIconView *icon_view)
5819 {
5820   if (icon_view->priv->source_targets)
5821     gtk_target_list_unref (icon_view->priv->source_targets);
5822   icon_view->priv->source_targets = NULL;
5823
5824   icon_view->priv->source_set = FALSE;
5825 }
5826
5827 static void
5828 clear_dest_info (GtkIconView *icon_view)
5829 {
5830   if (icon_view->priv->dest_targets)
5831     gtk_target_list_unref (icon_view->priv->dest_targets);
5832   icon_view->priv->dest_targets = NULL;
5833
5834   icon_view->priv->dest_set = FALSE;
5835 }
5836
5837 static void
5838 set_source_row (GdkDragContext *context,
5839                 GtkTreeModel   *model,
5840                 GtkTreePath    *source_row)
5841 {
5842   if (source_row)
5843     g_object_set_data_full (G_OBJECT (context),
5844                             I_("gtk-icon-view-source-row"),
5845                             gtk_tree_row_reference_new (model, source_row),
5846                             (GDestroyNotify) gtk_tree_row_reference_free);
5847   else
5848     g_object_set_data_full (G_OBJECT (context),
5849                             I_("gtk-icon-view-source-row"),
5850                             NULL, NULL);
5851 }
5852
5853 static GtkTreePath*
5854 get_source_row (GdkDragContext *context)
5855 {
5856   GtkTreeRowReference *ref;
5857
5858   ref = g_object_get_data (G_OBJECT (context), "gtk-icon-view-source-row");
5859
5860   if (ref)
5861     return gtk_tree_row_reference_get_path (ref);
5862   else
5863     return NULL;
5864 }
5865
5866 typedef struct
5867 {
5868   GtkTreeRowReference *dest_row;
5869   gboolean             empty_view_drop;
5870   gboolean             drop_append_mode;
5871 } DestRow;
5872
5873 static void
5874 dest_row_free (gpointer data)
5875 {
5876   DestRow *dr = (DestRow *)data;
5877
5878   gtk_tree_row_reference_free (dr->dest_row);
5879   g_free (dr);
5880 }
5881
5882 static void
5883 set_dest_row (GdkDragContext *context,
5884               GtkTreeModel   *model,
5885               GtkTreePath    *dest_row,
5886               gboolean        empty_view_drop,
5887               gboolean        drop_append_mode)
5888 {
5889   DestRow *dr;
5890
5891   if (!dest_row)
5892     {
5893       g_object_set_data_full (G_OBJECT (context),
5894                               I_("gtk-icon-view-dest-row"),
5895                               NULL, NULL);
5896       return;
5897     }
5898
5899   dr = g_new0 (DestRow, 1);
5900
5901   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
5902   dr->empty_view_drop = empty_view_drop;
5903   dr->drop_append_mode = drop_append_mode;
5904   g_object_set_data_full (G_OBJECT (context),
5905                           I_("gtk-icon-view-dest-row"),
5906                           dr, (GDestroyNotify) dest_row_free);
5907 }
5908
5909 static GtkTreePath*
5910 get_dest_row (GdkDragContext *context)
5911 {
5912   DestRow *dr;
5913
5914   dr = g_object_get_data (G_OBJECT (context), "gtk-icon-view-dest-row");
5915
5916   if (dr)
5917     {
5918       GtkTreePath *path = NULL;
5919
5920       if (dr->dest_row)
5921         path = gtk_tree_row_reference_get_path (dr->dest_row);
5922       else if (dr->empty_view_drop)
5923         path = gtk_tree_path_new_from_indices (0, -1);
5924       else
5925         path = NULL;
5926
5927       if (path && dr->drop_append_mode)
5928         gtk_tree_path_next (path);
5929
5930       return path;
5931     }
5932   else
5933     return NULL;
5934 }
5935
5936 static gboolean
5937 check_model_dnd (GtkTreeModel *model,
5938                  GType         required_iface,
5939                  const gchar  *signal)
5940 {
5941   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
5942     {
5943       g_warning ("You must override the default '%s' handler "
5944                  "on GtkIconView when using models that don't support "
5945                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
5946                  "is to connect to '%s' and call "
5947                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
5948                  "the default handler from running. Look at the source code "
5949                  "for the default handler in gtkiconview.c to get an idea what "
5950                  "your handler should do. (gtkiconview.c is in the GTK+ source "
5951                  "code.) If you're using GTK+ from a language other than C, "
5952                  "there may be a more natural way to override default handlers, e.g. via derivation.",
5953                  signal, g_type_name (required_iface), signal);
5954       return FALSE;
5955     }
5956   else
5957     return TRUE;
5958 }
5959
5960 static void
5961 remove_scroll_timeout (GtkIconView *icon_view)
5962 {
5963   if (icon_view->priv->scroll_timeout_id != 0)
5964     {
5965       g_source_remove (icon_view->priv->scroll_timeout_id);
5966
5967       icon_view->priv->scroll_timeout_id = 0;
5968     }
5969 }
5970
5971 static void
5972 gtk_icon_view_autoscroll (GtkIconView *icon_view)
5973 {
5974   gint px, py, x, y, width, height;
5975   gint hoffset, voffset;
5976   gfloat value;
5977
5978   gdk_window_get_pointer (GTK_WIDGET (icon_view)->window, &px, &py, NULL);
5979   gdk_window_get_geometry (GTK_WIDGET (icon_view)->window, &x, &y, &width, &height, NULL);
5980
5981   /* see if we are near the edge. */
5982   voffset = py - (y + 2 * SCROLL_EDGE_SIZE);
5983   if (voffset > 0)
5984     voffset = MAX (py - (y + height - 2 * SCROLL_EDGE_SIZE), 0);
5985
5986   hoffset = px - (x + 2 * SCROLL_EDGE_SIZE);
5987   if (hoffset > 0)
5988     hoffset = MAX (px - (x + width - 2 * SCROLL_EDGE_SIZE), 0);
5989
5990   if (voffset != 0)
5991     {
5992       value = CLAMP (icon_view->priv->vadjustment->value + voffset,
5993                      icon_view->priv->vadjustment->lower,
5994                      icon_view->priv->vadjustment->upper - icon_view->priv->vadjustment->page_size);
5995       gtk_adjustment_set_value (icon_view->priv->vadjustment, value);
5996     }
5997   if (hoffset != 0)
5998     {
5999       value = CLAMP (icon_view->priv->hadjustment->value + hoffset,
6000                      icon_view->priv->hadjustment->lower,
6001                      icon_view->priv->hadjustment->upper - icon_view->priv->hadjustment->page_size);
6002       gtk_adjustment_set_value (icon_view->priv->hadjustment, value);
6003     }
6004 }
6005
6006
6007 static gboolean
6008 drag_scroll_timeout (gpointer data)
6009 {
6010   GtkIconView *icon_view = GTK_ICON_VIEW (data);
6011
6012   gtk_icon_view_autoscroll (icon_view);
6013
6014   return TRUE;
6015 }
6016
6017
6018 static gboolean
6019 set_destination (GtkIconView    *icon_view,
6020                  GdkDragContext *context,
6021                  gint            x,
6022                  gint            y,
6023                  GdkDragAction  *suggested_action,
6024                  GdkAtom        *target)
6025 {
6026   GtkWidget *widget;
6027   GtkTreePath *path = NULL;
6028   GtkIconViewDropPosition pos;
6029   GtkIconViewDropPosition old_pos;
6030   GtkTreePath *old_dest_path = NULL;
6031   gboolean can_drop = FALSE;
6032
6033   widget = GTK_WIDGET (icon_view);
6034
6035   *suggested_action = 0;
6036   *target = GDK_NONE;
6037
6038   if (!icon_view->priv->dest_set)
6039     {
6040       /* someone unset us as a drag dest, note that if
6041        * we return FALSE drag_leave isn't called
6042        */
6043
6044       gtk_icon_view_set_drag_dest_item (icon_view,
6045                                         NULL,
6046                                         GTK_ICON_VIEW_DROP_LEFT);
6047
6048       remove_scroll_timeout (GTK_ICON_VIEW (widget));
6049
6050       return FALSE; /* no longer a drop site */
6051     }
6052
6053   *target = gtk_drag_dest_find_target (widget, context, icon_view->priv->dest_targets);
6054   if (*target == GDK_NONE)
6055     return FALSE;
6056
6057   if (!gtk_icon_view_get_dest_item_at_pos (icon_view, x, y, &path, &pos))
6058     {
6059       gint n_children;
6060       GtkTreeModel *model;
6061
6062       /* the row got dropped on empty space, let's setup a special case
6063        */
6064
6065       if (path)
6066         gtk_tree_path_free (path);
6067
6068       model = gtk_icon_view_get_model (icon_view);
6069
6070       n_children = gtk_tree_model_iter_n_children (model, NULL);
6071       if (n_children)
6072         {
6073           pos = GTK_ICON_VIEW_DROP_BELOW;
6074           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6075         }
6076       else
6077         {
6078           pos = GTK_ICON_VIEW_DROP_ABOVE;
6079           path = gtk_tree_path_new_from_indices (0, -1);
6080         }
6081
6082       can_drop = TRUE;
6083
6084       goto out;
6085     }
6086
6087   g_assert (path);
6088
6089   gtk_icon_view_get_drag_dest_item (icon_view,
6090                                     &old_dest_path,
6091                                     &old_pos);
6092
6093   if (old_dest_path)
6094     gtk_tree_path_free (old_dest_path);
6095
6096   if (TRUE /* FIXME if the location droppable predicate */)
6097     {
6098       can_drop = TRUE;
6099     }
6100
6101 out:
6102   if (can_drop)
6103     {
6104       GtkWidget *source_widget;
6105
6106       *suggested_action = context->suggested_action;
6107       source_widget = gtk_drag_get_source_widget (context);
6108
6109       if (source_widget == widget)
6110         {
6111           /* Default to MOVE, unless the user has
6112            * pressed ctrl or shift to affect available actions
6113            */
6114           if ((context->actions & GDK_ACTION_MOVE) != 0)
6115             *suggested_action = GDK_ACTION_MOVE;
6116         }
6117
6118       gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
6119                                         path, pos);
6120     }
6121   else
6122     {
6123       /* can't drop here */
6124       gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
6125                                         NULL,
6126                                         GTK_ICON_VIEW_DROP_LEFT);
6127     }
6128
6129   if (path)
6130     gtk_tree_path_free (path);
6131
6132   return TRUE;
6133 }
6134
6135 static GtkTreePath*
6136 get_logical_destination (GtkIconView *icon_view,
6137                          gboolean    *drop_append_mode)
6138 {
6139   /* adjust path to point to the row the drop goes in front of */
6140   GtkTreePath *path = NULL;
6141   GtkIconViewDropPosition pos;
6142
6143   *drop_append_mode = FALSE;
6144
6145   gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
6146
6147   if (path == NULL)
6148     return NULL;
6149
6150   if (pos == GTK_ICON_VIEW_DROP_RIGHT ||
6151       pos == GTK_ICON_VIEW_DROP_BELOW)
6152     {
6153       GtkTreeIter iter;
6154       GtkTreeModel *model = icon_view->priv->model;
6155
6156       if (!gtk_tree_model_get_iter (model, &iter, path) ||
6157           !gtk_tree_model_iter_next (model, &iter))
6158         *drop_append_mode = TRUE;
6159       else
6160         {
6161           *drop_append_mode = FALSE;
6162           gtk_tree_path_next (path);
6163         }
6164     }
6165
6166   return path;
6167 }
6168
6169 static gboolean
6170 gtk_icon_view_maybe_begin_drag (GtkIconView    *icon_view,
6171                                 GdkEventMotion *event)
6172 {
6173   GdkDragContext *context;
6174   GtkTreePath *path = NULL;
6175   gint button;
6176   GtkTreeModel *model;
6177   gboolean retval = FALSE;
6178
6179   if (!icon_view->priv->source_set)
6180     goto out;
6181
6182   if (icon_view->priv->pressed_button < 0)
6183     goto out;
6184
6185   if (!gtk_drag_check_threshold (GTK_WIDGET (icon_view),
6186                                  icon_view->priv->press_start_x,
6187                                  icon_view->priv->press_start_y,
6188                                  event->x, event->y))
6189     goto out;
6190
6191   model = gtk_icon_view_get_model (icon_view);
6192
6193   if (model == NULL)
6194     goto out;
6195
6196   button = icon_view->priv->pressed_button;
6197   icon_view->priv->pressed_button = -1;
6198
6199   path = gtk_icon_view_get_path_at_pos (icon_view,
6200                                         icon_view->priv->press_start_x,
6201                                         icon_view->priv->press_start_y);
6202
6203   if (path == NULL)
6204     goto out;
6205
6206   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
6207       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
6208                                            path))
6209     goto out;
6210
6211   /* FIXME Check whether we're a start button, if not return FALSE and
6212    * free path
6213    */
6214
6215   /* Now we can begin the drag */
6216
6217   retval = TRUE;
6218
6219   context = gtk_drag_begin (GTK_WIDGET (icon_view),
6220                             icon_view->priv->source_targets,
6221                             icon_view->priv->source_actions,
6222                             button,
6223                             (GdkEvent*)event);
6224
6225   set_source_row (context, model, path);
6226
6227  out:
6228   if (path)
6229     gtk_tree_path_free (path);
6230
6231   return retval;
6232 }
6233
6234 /* Source side drag signals */
6235 static void
6236 gtk_icon_view_drag_begin (GtkWidget      *widget,
6237                           GdkDragContext *context)
6238 {
6239   GtkIconView *icon_view;
6240   GtkIconViewItem *item;
6241   GdkPixmap *icon;
6242   gint x, y;
6243   GtkTreePath *path;
6244
6245   icon_view = GTK_ICON_VIEW (widget);
6246
6247   /* if the user uses a custom DnD impl, we don't set the icon here */
6248   if (!icon_view->priv->dest_set && !icon_view->priv->source_set)
6249     return;
6250
6251   item = gtk_icon_view_get_item_at_coords (icon_view,
6252                                            icon_view->priv->press_start_x,
6253                                            icon_view->priv->press_start_y,
6254                                            TRUE,
6255                                            NULL);
6256
6257   g_return_if_fail (item != NULL);
6258
6259   x = icon_view->priv->press_start_x - item->x + 1;
6260   y = icon_view->priv->press_start_y - item->y + 1;
6261
6262   path = gtk_tree_path_new_from_indices (item->index, -1);
6263   icon = gtk_icon_view_create_drag_icon (icon_view, path);
6264   gtk_tree_path_free (path);
6265
6266   gtk_drag_set_icon_pixmap (context,
6267                             gdk_drawable_get_colormap (icon),
6268                             icon,
6269                             NULL,
6270                             x, y);
6271
6272   g_object_unref (icon);
6273 }
6274
6275 static void
6276 gtk_icon_view_drag_end (GtkWidget      *widget,
6277                         GdkDragContext *context)
6278 {
6279   /* do nothing */
6280 }
6281
6282 static void
6283 gtk_icon_view_drag_data_get (GtkWidget        *widget,
6284                              GdkDragContext   *context,
6285                              GtkSelectionData *selection_data,
6286                              guint             info,
6287                              guint             time)
6288 {
6289   GtkIconView *icon_view;
6290   GtkTreeModel *model;
6291   GtkTreePath *source_row;
6292
6293   icon_view = GTK_ICON_VIEW (widget);
6294   model = gtk_icon_view_get_model (icon_view);
6295
6296   if (model == NULL)
6297     return;
6298
6299   if (!icon_view->priv->dest_set)
6300     return;
6301
6302   source_row = get_source_row (context);
6303
6304   if (source_row == NULL)
6305     return;
6306
6307   /* We can implement the GTK_TREE_MODEL_ROW target generically for
6308    * any model; for DragSource models there are some other targets
6309    * we also support.
6310    */
6311
6312   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
6313       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
6314                                           source_row,
6315                                           selection_data))
6316     goto done;
6317
6318   /* If drag_data_get does nothing, try providing row data. */
6319   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6320     gtk_tree_set_row_drag_data (selection_data,
6321                                 model,
6322                                 source_row);
6323
6324  done:
6325   gtk_tree_path_free (source_row);
6326 }
6327
6328 static void
6329 gtk_icon_view_drag_data_delete (GtkWidget      *widget,
6330                                 GdkDragContext *context)
6331 {
6332   GtkTreeModel *model;
6333   GtkIconView *icon_view;
6334   GtkTreePath *source_row;
6335
6336   icon_view = GTK_ICON_VIEW (widget);
6337   model = gtk_icon_view_get_model (icon_view);
6338
6339   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
6340     return;
6341
6342   if (!icon_view->priv->dest_set)
6343     return;
6344
6345   source_row = get_source_row (context);
6346
6347   if (source_row == NULL)
6348     return;
6349
6350   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
6351                                          source_row);
6352
6353   gtk_tree_path_free (source_row);
6354
6355   set_source_row (context, NULL, NULL);
6356 }
6357
6358 /* Target side drag signals */
6359 static void
6360 gtk_icon_view_drag_leave (GtkWidget      *widget,
6361                           GdkDragContext *context,
6362                           guint           time)
6363 {
6364   GtkIconView *icon_view;
6365
6366   icon_view = GTK_ICON_VIEW (widget);
6367
6368   /* unset any highlight row */
6369   gtk_icon_view_set_drag_dest_item (icon_view,
6370                                     NULL,
6371                                     GTK_ICON_VIEW_DROP_LEFT);
6372
6373   remove_scroll_timeout (icon_view);
6374 }
6375
6376 static gboolean
6377 gtk_icon_view_drag_motion (GtkWidget      *widget,
6378                            GdkDragContext *context,
6379                            gint            x,
6380                            gint            y,
6381                            guint           time)
6382 {
6383   GtkTreePath *path = NULL;
6384   GtkIconViewDropPosition pos;
6385   GtkIconView *icon_view;
6386   GdkDragAction suggested_action = 0;
6387   GdkAtom target;
6388   gboolean empty;
6389
6390   icon_view = GTK_ICON_VIEW (widget);
6391
6392   if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
6393     return FALSE;
6394
6395   gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
6396
6397   /* we only know this *after* set_desination_row */
6398   empty = icon_view->priv->empty_view_drop;
6399
6400   if (path == NULL && !empty)
6401     {
6402       /* Can't drop here. */
6403       gdk_drag_status (context, 0, time);
6404     }
6405   else
6406     {
6407       if (icon_view->priv->scroll_timeout_id == 0)
6408         {
6409           icon_view->priv->scroll_timeout_id =
6410             gdk_threads_add_timeout (50, drag_scroll_timeout, icon_view);
6411         }
6412
6413       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6414         {
6415           /* Request data so we can use the source row when
6416            * determining whether to accept the drop
6417            */
6418           set_status_pending (context, suggested_action);
6419           gtk_drag_get_data (widget, context, target, time);
6420         }
6421       else
6422         {
6423           set_status_pending (context, 0);
6424           gdk_drag_status (context, suggested_action, time);
6425         }
6426     }
6427
6428   if (path)
6429     gtk_tree_path_free (path);
6430
6431   return TRUE;
6432 }
6433
6434 static gboolean
6435 gtk_icon_view_drag_drop (GtkWidget      *widget,
6436                          GdkDragContext *context,
6437                          gint            x,
6438                          gint            y,
6439                          guint           time)
6440 {
6441   GtkIconView *icon_view;
6442   GtkTreePath *path;
6443   GdkDragAction suggested_action = 0;
6444   GdkAtom target = GDK_NONE;
6445   GtkTreeModel *model;
6446   gboolean drop_append_mode;
6447
6448   icon_view = GTK_ICON_VIEW (widget);
6449   model = gtk_icon_view_get_model (icon_view);
6450
6451   remove_scroll_timeout (GTK_ICON_VIEW (widget));
6452
6453   if (!icon_view->priv->dest_set)
6454     return FALSE;
6455
6456   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
6457     return FALSE;
6458
6459   if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
6460     return FALSE;
6461
6462   path = get_logical_destination (icon_view, &drop_append_mode);
6463
6464   if (target != GDK_NONE && path != NULL)
6465     {
6466       /* in case a motion had requested drag data, change things so we
6467        * treat drag data receives as a drop.
6468        */
6469       set_status_pending (context, 0);
6470       set_dest_row (context, model, path,
6471                     icon_view->priv->empty_view_drop, drop_append_mode);
6472     }
6473
6474   if (path)
6475     gtk_tree_path_free (path);
6476
6477   /* Unset this thing */
6478   gtk_icon_view_set_drag_dest_item (icon_view, NULL, GTK_ICON_VIEW_DROP_LEFT);
6479
6480   if (target != GDK_NONE)
6481     {
6482       gtk_drag_get_data (widget, context, target, time);
6483       return TRUE;
6484     }
6485   else
6486     return FALSE;
6487 }
6488
6489 static void
6490 gtk_icon_view_drag_data_received (GtkWidget        *widget,
6491                                   GdkDragContext   *context,
6492                                   gint              x,
6493                                   gint              y,
6494                                   GtkSelectionData *selection_data,
6495                                   guint             info,
6496                                   guint             time)
6497 {
6498   GtkTreePath *path;
6499   gboolean accepted = FALSE;
6500   GtkTreeModel *model;
6501   GtkIconView *icon_view;
6502   GtkTreePath *dest_row;
6503   GdkDragAction suggested_action;
6504   gboolean drop_append_mode;
6505
6506   icon_view = GTK_ICON_VIEW (widget);
6507   model = gtk_icon_view_get_model (icon_view);
6508
6509   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
6510     return;
6511
6512   if (!icon_view->priv->dest_set)
6513     return;
6514
6515   suggested_action = get_status_pending (context);
6516
6517   if (suggested_action)
6518     {
6519       /* We are getting this data due to a request in drag_motion,
6520        * rather than due to a request in drag_drop, so we are just
6521        * supposed to call drag_status, not actually paste in the
6522        * data.
6523        */
6524       path = get_logical_destination (icon_view, &drop_append_mode);
6525
6526       if (path == NULL)
6527         suggested_action = 0;
6528
6529       if (suggested_action)
6530         {
6531           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
6532                                                      path,
6533                                                      selection_data))
6534             suggested_action = 0;
6535         }
6536
6537       gdk_drag_status (context, suggested_action, time);
6538
6539       if (path)
6540         gtk_tree_path_free (path);
6541
6542       /* If you can't drop, remove user drop indicator until the next motion */
6543       if (suggested_action == 0)
6544         gtk_icon_view_set_drag_dest_item (icon_view,
6545                                           NULL,
6546                                           GTK_ICON_VIEW_DROP_LEFT);
6547       return;
6548     }
6549
6550
6551   dest_row = get_dest_row (context);
6552
6553   if (dest_row == NULL)
6554     return;
6555
6556   if (selection_data->length >= 0)
6557     {
6558       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
6559                                                  dest_row,
6560                                                  selection_data))
6561         accepted = TRUE;
6562     }
6563
6564   gtk_drag_finish (context,
6565                    accepted,
6566                    (context->action == GDK_ACTION_MOVE),
6567                    time);
6568
6569   gtk_tree_path_free (dest_row);
6570
6571   /* drop dest_row */
6572   set_dest_row (context, NULL, NULL, FALSE, FALSE);
6573 }
6574
6575 /* Drag-and-Drop support */
6576 /**
6577  * gtk_icon_view_enable_model_drag_source:
6578  * @icon_view: a #GtkIconTreeView
6579  * @start_button_mask: Mask of allowed buttons to start drag
6580  * @targets: the table of targets that the drag will support
6581  * @n_targets: the number of items in @targets
6582  * @actions: the bitmask of possible actions for a drag from this
6583  *    widget
6584  *
6585  * Turns @icon_view into a drag source for automatic DND.
6586  *
6587  * Since: 2.8
6588  **/
6589 void
6590 gtk_icon_view_enable_model_drag_source (GtkIconView              *icon_view,
6591                                         GdkModifierType           start_button_mask,
6592                                         const GtkTargetEntry     *targets,
6593                                         gint                      n_targets,
6594                                         GdkDragAction             actions)
6595 {
6596   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6597
6598   gtk_drag_source_set (GTK_WIDGET (icon_view), 0, NULL, 0, actions);
6599
6600   clear_source_info (icon_view);
6601   icon_view->priv->start_button_mask = start_button_mask;
6602   icon_view->priv->source_targets = gtk_target_list_new (targets, n_targets);
6603   icon_view->priv->source_actions = actions;
6604
6605   icon_view->priv->source_set = TRUE;
6606
6607   unset_reorderable (icon_view);
6608 }
6609
6610 /**
6611  * gtk_icon_view_enable_model_drag_dest:
6612  * @icon_view: a #GtkIconView
6613  * @targets: the table of targets that the drag will support
6614  * @n_targets: the number of items in @targets
6615  * @actions: the bitmask of possible actions for a drag to this
6616  *    widget
6617  *
6618  * Turns @icon_view into a drop destination for automatic DND.
6619  *
6620  * Since: 2.8
6621  **/
6622 void
6623 gtk_icon_view_enable_model_drag_dest (GtkIconView          *icon_view,
6624                                       const GtkTargetEntry *targets,
6625                                       gint                  n_targets,
6626                                       GdkDragAction         actions)
6627 {
6628   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6629
6630   gtk_drag_dest_set (GTK_WIDGET (icon_view), 0, NULL, 0, actions);
6631
6632   clear_dest_info (icon_view);
6633
6634   icon_view->priv->dest_targets = gtk_target_list_new (targets, n_targets);
6635   icon_view->priv->dest_actions = actions;
6636
6637   icon_view->priv->dest_set = TRUE;
6638
6639   unset_reorderable (icon_view);
6640 }
6641
6642 /**
6643  * gtk_icon_view_unset_model_drag_source:
6644  * @icon_view: a #GtkIconView
6645  *
6646  * Undoes the effect of gtk_icon_view_enable_model_drag_source().
6647  *
6648  * Since: 2.8
6649  **/
6650 void
6651 gtk_icon_view_unset_model_drag_source (GtkIconView *icon_view)
6652 {
6653   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6654
6655   if (icon_view->priv->source_set)
6656     {
6657       gtk_drag_source_unset (GTK_WIDGET (icon_view));
6658       clear_source_info (icon_view);
6659     }
6660
6661   unset_reorderable (icon_view);
6662 }
6663
6664 /**
6665  * gtk_icon_view_unset_model_drag_dest:
6666  * @icon_view: a #GtkIconView
6667  *
6668  * Undoes the effect of gtk_icon_view_enable_model_drag_dest().
6669  *
6670  * Since: 2.8
6671  **/
6672 void
6673 gtk_icon_view_unset_model_drag_dest (GtkIconView *icon_view)
6674 {
6675   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6676
6677   if (icon_view->priv->dest_set)
6678     {
6679       gtk_drag_dest_unset (GTK_WIDGET (icon_view));
6680       clear_dest_info (icon_view);
6681     }
6682
6683   unset_reorderable (icon_view);
6684 }
6685
6686 /* These are useful to implement your own custom stuff. */
6687 /**
6688  * gtk_icon_view_set_drag_dest_item:
6689  * @icon_view: a #GtkIconView
6690  * @path: The path of the item to highlight, or %NULL.
6691  * @pos: Specifies where to drop, relative to the item
6692  *
6693  * Sets the item that is highlighted for feedback.
6694  *
6695  * Since: 2.8
6696  */
6697 void
6698 gtk_icon_view_set_drag_dest_item (GtkIconView              *icon_view,
6699                                   GtkTreePath              *path,
6700                                   GtkIconViewDropPosition   pos)
6701 {
6702   /* Note; this function is exported to allow a custom DND
6703    * implementation, so it can't touch TreeViewDragInfo
6704    */
6705
6706   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6707
6708   if (icon_view->priv->dest_item)
6709     {
6710       GtkTreePath *current_path;
6711       current_path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
6712       gtk_tree_row_reference_free (icon_view->priv->dest_item);
6713       icon_view->priv->dest_item = NULL;
6714
6715       gtk_icon_view_queue_draw_path (icon_view, current_path);
6716       gtk_tree_path_free (current_path);
6717     }
6718
6719   /* special case a drop on an empty model */
6720   icon_view->priv->empty_view_drop = FALSE;
6721   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
6722       && gtk_tree_path_get_depth (path) == 1
6723       && gtk_tree_path_get_indices (path)[0] == 0)
6724     {
6725       gint n_children;
6726
6727       n_children = gtk_tree_model_iter_n_children (icon_view->priv->model,
6728                                                    NULL);
6729
6730       if (n_children == 0)
6731         icon_view->priv->empty_view_drop = TRUE;
6732     }
6733
6734   icon_view->priv->dest_pos = pos;
6735
6736   if (path)
6737     {
6738       icon_view->priv->dest_item =
6739         gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view),
6740                                           icon_view->priv->model, path);
6741
6742       gtk_icon_view_queue_draw_path (icon_view, path);
6743     }
6744 }
6745
6746 /**
6747  * gtk_icon_view_get_drag_dest_item:
6748  * @icon_view: a #GtkIconView
6749  * @path: Return location for the path of the highlighted item, or %NULL.
6750  * @pos: Return location for the drop position, or %NULL
6751  *
6752  * Gets information about the item that is highlighted for feedback.
6753  *
6754  * Since: 2.8
6755  **/
6756 void
6757 gtk_icon_view_get_drag_dest_item (GtkIconView              *icon_view,
6758                                   GtkTreePath             **path,
6759                                   GtkIconViewDropPosition  *pos)
6760 {
6761   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6762
6763   if (path)
6764     {
6765       if (icon_view->priv->dest_item)
6766         *path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
6767       else
6768         *path = NULL;
6769     }
6770
6771   if (pos)
6772     *pos = icon_view->priv->dest_pos;
6773 }
6774
6775 /**
6776  * gtk_icon_view_get_dest_item_at_pos:
6777  * @icon_view: a #GtkIconView
6778  * @drag_x: the position to determine the destination item for
6779  * @drag_y: the position to determine the destination item for
6780  * @path: Return location for the path of the item, or %NULL.
6781  * @pos: Return location for the drop position, or %NULL
6782  *
6783  * Determines the destination item for a given position.
6784  *
6785  * Return value: whether there is an item at the given position.
6786  *
6787  * Since: 2.8
6788  **/
6789 gboolean
6790 gtk_icon_view_get_dest_item_at_pos (GtkIconView              *icon_view,
6791                                     gint                      drag_x,
6792                                     gint                      drag_y,
6793                                     GtkTreePath             **path,
6794                                     GtkIconViewDropPosition  *pos)
6795 {
6796   GtkIconViewItem *item;
6797
6798   /* Note; this function is exported to allow a custom DND
6799    * implementation, so it can't touch TreeViewDragInfo
6800    */
6801
6802   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
6803   g_return_val_if_fail (drag_x >= 0, FALSE);
6804   g_return_val_if_fail (drag_y >= 0, FALSE);
6805   g_return_val_if_fail (icon_view->priv->bin_window != NULL, FALSE);
6806
6807
6808   if (path)
6809     *path = NULL;
6810
6811   item = gtk_icon_view_get_item_at_coords (icon_view,
6812                                            drag_x + icon_view->priv->hadjustment->value,
6813                                            drag_y + icon_view->priv->vadjustment->value,
6814                                            FALSE, NULL);
6815
6816   if (item == NULL)
6817     return FALSE;
6818
6819   if (path)
6820     *path = gtk_tree_path_new_from_indices (item->index, -1);
6821
6822   if (pos)
6823     {
6824       if (drag_x < item->x + item->width / 4)
6825         *pos = GTK_ICON_VIEW_DROP_LEFT;
6826       else if (drag_x > item->x + item->width * 3 / 4)
6827         *pos = GTK_ICON_VIEW_DROP_RIGHT;
6828       else if (drag_y < item->y + item->height / 4)
6829         *pos = GTK_ICON_VIEW_DROP_ABOVE;
6830       else if (drag_y > item->y + item->height * 3 / 4)
6831         *pos = GTK_ICON_VIEW_DROP_BELOW;
6832       else
6833         *pos = GTK_ICON_VIEW_DROP_INTO;
6834     }
6835
6836   return TRUE;
6837 }
6838
6839 /**
6840  * gtk_icon_view_create_drag_icon:
6841  * @icon_view: a #GtkIconView
6842  * @path: a #GtkTreePath in @icon_view
6843  *
6844  * Creates a #GdkPixmap representation of the item at @path.
6845  * This image is used for a drag icon.
6846  *
6847  * Return value: a newly-allocated pixmap of the drag icon.
6848  *
6849  * Since: 2.8
6850  **/
6851 GdkPixmap *
6852 gtk_icon_view_create_drag_icon (GtkIconView *icon_view,
6853                                 GtkTreePath *path)
6854 {
6855   GtkWidget *widget;
6856   cairo_t *cr;
6857   GdkPixmap *drawable;
6858   GList *l;
6859   gint index;
6860   GdkRectangle area;
6861
6862   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
6863   g_return_val_if_fail (path != NULL, NULL);
6864
6865   widget = GTK_WIDGET (icon_view);
6866
6867   if (!GTK_WIDGET_REALIZED (widget))
6868     return NULL;
6869
6870   index = gtk_tree_path_get_indices (path)[0];
6871
6872   for (l = icon_view->priv->items; l; l = l->next)
6873     {
6874       GtkIconViewItem *item = l->data;
6875
6876       if (index == item->index)
6877         {
6878           drawable = gdk_pixmap_new (icon_view->priv->bin_window,
6879                                      item->width + 2,
6880                                      item->height + 2,
6881                                      -1);
6882
6883           cr = gdk_cairo_create (drawable);
6884           cairo_set_line_width (cr, 1.);
6885
6886           gdk_cairo_set_source_color
6887             (cr, &widget->style->base[GTK_WIDGET_STATE (widget)]);
6888           cairo_rectangle (cr, 0, 0, item->width + 2, item->height + 2);
6889           cairo_fill (cr);
6890
6891           area.x = 0;
6892           area.y = 0;
6893           area.width = item->width;
6894           area.height = item->height;
6895
6896           gtk_icon_view_paint_item (icon_view, cr, item, &area,
6897                                     drawable, 1, 1, FALSE);
6898
6899           cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
6900           cairo_rectangle (cr, 0.5, 0.5, item->width + 1, item->height + 1);
6901           cairo_stroke (cr);
6902
6903           cairo_destroy (cr);
6904
6905           return drawable;
6906         }
6907     }
6908
6909   return NULL;
6910 }
6911
6912 /**
6913  * gtk_icon_view_get_reorderable:
6914  * @icon_view: a #GtkIconView
6915  *
6916  * Retrieves whether the user can reorder the list via drag-and-drop.
6917  * See gtk_icon_view_set_reorderable().
6918  *
6919  * Return value: %TRUE if the list can be reordered.
6920  *
6921  * Since: 2.8
6922  **/
6923 gboolean
6924 gtk_icon_view_get_reorderable (GtkIconView *icon_view)
6925 {
6926   g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
6927
6928   return icon_view->priv->reorderable;
6929 }
6930
6931 static const GtkTargetEntry item_targets[] = {
6932   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
6933 };
6934
6935
6936 /**
6937  * gtk_icon_view_set_reorderable:
6938  * @icon_view: A #GtkIconView.
6939  * @reorderable: %TRUE, if the list of items can be reordered.
6940  *
6941  * This function is a convenience function to allow you to reorder models that
6942  * support the #GtkTreeDragSourceIface and the #GtkTreeDragDestIface.  Both
6943  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
6944  * the user can reorder the model by dragging and dropping rows.  The
6945  * developer can listen to these changes by connecting to the model's
6946  * row_inserted and row_deleted signals.
6947  *
6948  * This function does not give you any degree of control over the order -- any
6949  * reordering is allowed.  If more control is needed, you should probably
6950  * handle drag and drop manually.
6951  *
6952  * Since: 2.8
6953  **/
6954 void
6955 gtk_icon_view_set_reorderable (GtkIconView *icon_view,
6956                                gboolean     reorderable)
6957 {
6958   g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6959
6960   reorderable = reorderable != FALSE;
6961
6962   if (icon_view->priv->reorderable == reorderable)
6963     return;
6964
6965   if (reorderable)
6966     {
6967       gtk_icon_view_enable_model_drag_source (icon_view,
6968                                               GDK_BUTTON1_MASK,
6969                                               item_targets,
6970                                               G_N_ELEMENTS (item_targets),
6971                                               GDK_ACTION_MOVE);
6972       gtk_icon_view_enable_model_drag_dest (icon_view,
6973                                             item_targets,
6974                                             G_N_ELEMENTS (item_targets),
6975                                             GDK_ACTION_MOVE);
6976     }
6977   else
6978     {
6979       gtk_icon_view_unset_model_drag_source (icon_view);
6980       gtk_icon_view_unset_model_drag_dest (icon_view);
6981     }
6982
6983   icon_view->priv->reorderable = reorderable;
6984
6985   g_object_notify (G_OBJECT (icon_view), "reorderable");
6986 }
6987
6988
6989 /* Accessibility Support */
6990
6991 static gpointer accessible_parent_class;
6992 static gpointer accessible_item_parent_class;
6993 static GQuark accessible_private_data_quark = 0;
6994
6995 #define GTK_TYPE_ICON_VIEW_ITEM_ACCESSIBLE      (gtk_icon_view_item_accessible_get_type ())
6996 #define GTK_ICON_VIEW_ITEM_ACCESSIBLE(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ICON_VIEW_ITEM_ACCESSIBLE, GtkIconViewItemAccessible))
6997 #define GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE(obj)   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ICON_VIEW_ITEM_ACCESSIBLE))
6998
6999 static GType gtk_icon_view_item_accessible_get_type (void);
7000
7001 enum {
7002     ACTION_ACTIVATE,
7003     LAST_ACTION
7004 };
7005
7006 typedef struct
7007 {
7008   AtkObject parent;
7009
7010   GtkIconViewItem *item;
7011
7012   GtkWidget *widget;
7013
7014   AtkStateSet *state_set;
7015
7016   gchar *text;
7017
7018   GtkTextBuffer *text_buffer;
7019
7020   gchar *action_descriptions[LAST_ACTION];
7021   gchar *image_description;
7022   guint action_idle_handler;
7023 } GtkIconViewItemAccessible;
7024
7025 static const gchar *const gtk_icon_view_item_accessible_action_names[] =
7026 {
7027   "activate",
7028   NULL
7029 };
7030
7031 static const gchar *const gtk_icon_view_item_accessible_action_descriptions[] =
7032 {
7033   "Activate item",
7034   NULL
7035 };
7036 typedef struct _GtkIconViewItemAccessibleClass
7037 {
7038   AtkObjectClass parent_class;
7039
7040 } GtkIconViewItemAccessibleClass;
7041
7042 static gboolean gtk_icon_view_item_accessible_is_showing (GtkIconViewItemAccessible *item);
7043
7044 static gboolean
7045 gtk_icon_view_item_accessible_idle_do_action (gpointer data)
7046 {
7047   GtkIconViewItemAccessible *item;
7048   GtkIconView *icon_view;
7049   GtkTreePath *path;
7050
7051   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (data);
7052   item->action_idle_handler = 0;
7053
7054   if (item->widget != NULL)
7055     {
7056       icon_view = GTK_ICON_VIEW (item->widget);
7057       path = gtk_tree_path_new_from_indices (item->item->index, -1);
7058       gtk_icon_view_item_activated (icon_view, path);
7059       gtk_tree_path_free (path);
7060     }
7061
7062   return FALSE;
7063 }
7064
7065 static gboolean
7066 gtk_icon_view_item_accessible_action_do_action (AtkAction *action,
7067                                                 gint       i)
7068 {
7069   GtkIconViewItemAccessible *item;
7070
7071   if (i < 0 || i >= LAST_ACTION)
7072     return FALSE;
7073
7074   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (action);
7075
7076   if (!GTK_IS_ICON_VIEW (item->widget))
7077     return FALSE;
7078
7079   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7080     return FALSE;
7081
7082   switch (i)
7083     {
7084     case ACTION_ACTIVATE:
7085       if (!item->action_idle_handler)
7086         item->action_idle_handler = gdk_threads_add_idle (gtk_icon_view_item_accessible_idle_do_action, item);
7087       break;
7088     default:
7089       g_assert_not_reached ();
7090       return FALSE;
7091
7092     }
7093   return TRUE;
7094 }
7095
7096 static gint
7097 gtk_icon_view_item_accessible_action_get_n_actions (AtkAction *action)
7098 {
7099         return LAST_ACTION;
7100 }
7101
7102 static const gchar *
7103 gtk_icon_view_item_accessible_action_get_description (AtkAction *action,
7104                                                       gint       i)
7105 {
7106   GtkIconViewItemAccessible *item;
7107
7108   if (i < 0 || i >= LAST_ACTION)
7109     return NULL;
7110
7111   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (action);
7112
7113   if (item->action_descriptions[i])
7114     return item->action_descriptions[i];
7115   else
7116     return gtk_icon_view_item_accessible_action_descriptions[i];
7117 }
7118
7119 static const gchar *
7120 gtk_icon_view_item_accessible_action_get_name (AtkAction *action,
7121                                                gint       i)
7122 {
7123   if (i < 0 || i >= LAST_ACTION)
7124     return NULL;
7125
7126   return gtk_icon_view_item_accessible_action_names[i];
7127 }
7128
7129 static gboolean
7130 gtk_icon_view_item_accessible_action_set_description (AtkAction   *action,
7131                                                       gint         i,
7132                                                       const gchar *description)
7133 {
7134   GtkIconViewItemAccessible *item;
7135
7136   if (i < 0 || i >= LAST_ACTION)
7137     return FALSE;
7138
7139   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (action);
7140
7141   g_free (item->action_descriptions[i]);
7142
7143   item->action_descriptions[i] = g_strdup (description);
7144
7145   return TRUE;
7146 }
7147
7148 static void
7149 atk_action_item_interface_init (AtkActionIface *iface)
7150 {
7151   iface->do_action = gtk_icon_view_item_accessible_action_do_action;
7152   iface->get_n_actions = gtk_icon_view_item_accessible_action_get_n_actions;
7153   iface->get_description = gtk_icon_view_item_accessible_action_get_description;
7154   iface->get_name = gtk_icon_view_item_accessible_action_get_name;
7155   iface->set_description = gtk_icon_view_item_accessible_action_set_description;
7156 }
7157
7158 static const gchar *
7159 gtk_icon_view_item_accessible_image_get_image_description (AtkImage *image)
7160 {
7161   GtkIconViewItemAccessible *item;
7162
7163   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (image);
7164
7165   return item->image_description;
7166 }
7167
7168 static gboolean
7169 gtk_icon_view_item_accessible_image_set_image_description (AtkImage    *image,
7170                                                            const gchar *description)
7171 {
7172   GtkIconViewItemAccessible *item;
7173
7174   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (image);
7175
7176   g_free (item->image_description);
7177   item->image_description = g_strdup (item->image_description);
7178
7179   return TRUE;
7180 }
7181
7182 static gboolean
7183 get_pixbuf_box (GtkIconView     *icon_view,
7184                 GtkIconViewItem *item,
7185                 GdkRectangle    *box)
7186 {
7187   GList *l;
7188
7189   for (l = icon_view->priv->cell_list; l; l = l->next)
7190     {
7191       GtkIconViewCellInfo *info = l->data;
7192
7193       if (GTK_IS_CELL_RENDERER_PIXBUF (info->cell))
7194         {
7195           gtk_icon_view_get_cell_box (icon_view, item, info, box);
7196
7197           return TRUE;
7198         }
7199     }
7200
7201   return FALSE;
7202 }
7203
7204 static gchar *
7205 get_text (GtkIconView     *icon_view,
7206           GtkIconViewItem *item)
7207 {
7208   GList *l;
7209   gchar *text;
7210
7211   for (l = icon_view->priv->cell_list; l; l = l->next)
7212     {
7213       GtkIconViewCellInfo *info = l->data;
7214
7215       if (GTK_IS_CELL_RENDERER_TEXT (info->cell))
7216         {
7217           g_object_get (info->cell, "text", &text, NULL);
7218
7219           return text;
7220         }
7221     }
7222
7223   return NULL;
7224 }
7225
7226 static void
7227 gtk_icon_view_item_accessible_image_get_image_size (AtkImage *image,
7228                                                     gint     *width,
7229                                                     gint     *height)
7230 {
7231   GtkIconViewItemAccessible *item;
7232   GdkRectangle box;
7233
7234   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (image);
7235
7236   if (!GTK_IS_ICON_VIEW (item->widget))
7237     return;
7238
7239   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7240     return;
7241
7242   if (get_pixbuf_box (GTK_ICON_VIEW (item->widget), item->item, &box))
7243     {
7244       *width = box.width;
7245       *height = box.height;
7246     }
7247 }
7248
7249 static void
7250 gtk_icon_view_item_accessible_image_get_image_position (AtkImage    *image,
7251                                                         gint        *x,
7252                                                         gint        *y,
7253                                                         AtkCoordType coord_type)
7254 {
7255   GtkIconViewItemAccessible *item;
7256   GdkRectangle box;
7257
7258   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (image);
7259
7260   if (!GTK_IS_ICON_VIEW (item->widget))
7261     return;
7262
7263   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7264     return;
7265
7266   atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
7267
7268   if (get_pixbuf_box (GTK_ICON_VIEW (item->widget), item->item, &box))
7269     {
7270       *x+= box.x - item->item->x;
7271       *y+= box.y - item->item->y;
7272     }
7273
7274 }
7275
7276 static void
7277 atk_image_item_interface_init (AtkImageIface *iface)
7278 {
7279   iface->get_image_description = gtk_icon_view_item_accessible_image_get_image_description;
7280   iface->set_image_description = gtk_icon_view_item_accessible_image_set_image_description;
7281   iface->get_image_size = gtk_icon_view_item_accessible_image_get_image_size;
7282   iface->get_image_position = gtk_icon_view_item_accessible_image_get_image_position;
7283 }
7284
7285 static gchar *
7286 gtk_icon_view_item_accessible_text_get_text (AtkText *text,
7287                                              gint     start_pos,
7288                                              gint     end_pos)
7289 {
7290   GtkIconViewItemAccessible *item;
7291   GtkTextIter start, end;
7292   GtkTextBuffer *buffer;
7293
7294   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7295
7296   if (!GTK_IS_ICON_VIEW (item->widget))
7297     return NULL;
7298
7299   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7300     return NULL;
7301
7302   buffer = item->text_buffer;
7303   gtk_text_buffer_get_iter_at_offset (buffer, &start, start_pos);
7304   if (end_pos < 0)
7305     gtk_text_buffer_get_end_iter (buffer, &end);
7306   else
7307     gtk_text_buffer_get_iter_at_offset (buffer, &end, end_pos);
7308
7309   return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
7310 }
7311
7312 static gunichar
7313 gtk_icon_view_item_accessible_text_get_character_at_offset (AtkText *text,
7314                                                             gint     offset)
7315 {
7316   GtkIconViewItemAccessible *item;
7317   GtkTextIter start, end;
7318   GtkTextBuffer *buffer;
7319   gchar *string;
7320   gunichar unichar;
7321
7322   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7323
7324   if (!GTK_IS_ICON_VIEW (item->widget))
7325     return '\0';
7326
7327   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7328     return '\0';
7329
7330   buffer = item->text_buffer;
7331   if (offset >= gtk_text_buffer_get_char_count (buffer))
7332     return '\0';
7333
7334   gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
7335   end = start;
7336   gtk_text_iter_forward_char (&end);
7337   string = gtk_text_buffer_get_slice (buffer, &start, &end, FALSE);
7338   unichar = g_utf8_get_char (string);
7339   g_free(string);
7340
7341   return unichar;
7342 }
7343
7344 #if 0
7345 static void
7346 get_pango_text_offsets (PangoLayout     *layout,
7347                         GtkTextBuffer   *buffer,
7348                         gint             function,
7349                         AtkTextBoundary  boundary_type,
7350                         gint             offset,
7351                         gint            *start_offset,
7352                         gint            *end_offset,
7353                         GtkTextIter     *start_iter,
7354                         GtkTextIter     *end_iter)
7355 {
7356   PangoLayoutIter *iter;
7357   PangoLayoutLine *line, *prev_line = NULL, *prev_prev_line = NULL;
7358   gint index, start_index, end_index;
7359   const gchar *text;
7360   gboolean found = FALSE;
7361
7362   text = pango_layout_get_text (layout);
7363   index = g_utf8_offset_to_pointer (text, offset) - text;
7364   iter = pango_layout_get_iter (layout);
7365   do
7366     {
7367       line = pango_layout_iter_get_line_readonly (iter);
7368       start_index = line->start_index;
7369       end_index = start_index + line->length;
7370
7371       if (index >= start_index && index <= end_index)
7372         {
7373           /*
7374            * Found line for offset
7375            */
7376           switch (function)
7377             {
7378             case 0:
7379                   /*
7380                    * We want the previous line
7381                    */
7382               if (prev_line)
7383                 {
7384                   switch (boundary_type)
7385                     {
7386                     case ATK_TEXT_BOUNDARY_LINE_START:
7387                       end_index = start_index;
7388                       start_index = prev_line->start_index;
7389                       break;
7390                     case ATK_TEXT_BOUNDARY_LINE_END:
7391                       if (prev_prev_line)
7392                         start_index = prev_prev_line->start_index +
7393                                   prev_prev_line->length;
7394                       end_index = prev_line->start_index + prev_line->length;
7395                       break;
7396                     default:
7397                       g_assert_not_reached();
7398                     }
7399                 }
7400               else
7401                 start_index = end_index = 0;
7402               break;
7403             case 1:
7404               switch (boundary_type)
7405                 {
7406                 case ATK_TEXT_BOUNDARY_LINE_START:
7407                   if (pango_layout_iter_next_line (iter))
7408                     end_index = pango_layout_iter_get_line_readonly (iter)->start_index;
7409                   break;
7410                 case ATK_TEXT_BOUNDARY_LINE_END:
7411                   if (prev_line)
7412                     start_index = prev_line->start_index +
7413                                   prev_line->length;
7414                   break;
7415                 default:
7416                   g_assert_not_reached();
7417                 }
7418               break;
7419             case 2:
7420                /*
7421                 * We want the next line
7422                 */
7423               if (pango_layout_iter_next_line (iter))
7424                 {
7425                   line = pango_layout_iter_get_line_readonly (iter);
7426                   switch (boundary_type)
7427                     {
7428                     case ATK_TEXT_BOUNDARY_LINE_START:
7429                       start_index = line->start_index;
7430                       if (pango_layout_iter_next_line (iter))
7431                         end_index = pango_layout_iter_get_line_readonly (iter)->start_index;
7432                       else
7433                         end_index = start_index + line->length;
7434                       break;
7435                     case ATK_TEXT_BOUNDARY_LINE_END:
7436                       start_index = end_index;
7437                       end_index = line->start_index + line->length;
7438                       break;
7439                     default:
7440                       g_assert_not_reached();
7441                     }
7442                 }
7443               else
7444                 start_index = end_index;
7445               break;
7446             }
7447           found = TRUE;
7448           break;
7449         }
7450       prev_prev_line = prev_line;
7451       prev_line = line;
7452     }
7453   while (pango_layout_iter_next_line (iter));
7454
7455   if (!found)
7456     {
7457       start_index = prev_line->start_index + prev_line->length;
7458       end_index = start_index;
7459     }
7460   pango_layout_iter_free (iter);
7461   *start_offset = g_utf8_pointer_to_offset (text, text + start_index);
7462   *end_offset = g_utf8_pointer_to_offset (text, text + end_index);
7463
7464   gtk_text_buffer_get_iter_at_offset (buffer, start_iter, *start_offset);
7465   gtk_text_buffer_get_iter_at_offset (buffer, end_iter, *end_offset);
7466 }
7467 #endif
7468
7469 static gchar*
7470 gtk_icon_view_item_accessible_text_get_text_before_offset (AtkText         *text,
7471                                                            gint            offset,
7472                                                            AtkTextBoundary boundary_type,
7473                                                            gint            *start_offset,
7474                                                            gint            *end_offset)
7475 {
7476   GtkIconViewItemAccessible *item;
7477   GtkTextIter start, end;
7478   GtkTextBuffer *buffer;
7479 #if 0
7480   GtkIconView *icon_view;
7481 #endif
7482
7483   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7484
7485   if (!GTK_IS_ICON_VIEW (item->widget))
7486     return NULL;
7487
7488   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7489     return NULL;
7490
7491   buffer = item->text_buffer;
7492
7493   if (!gtk_text_buffer_get_char_count (buffer))
7494     {
7495       *start_offset = 0;
7496       *end_offset = 0;
7497       return g_strdup ("");
7498     }
7499   gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
7500
7501   end = start;
7502
7503   switch (boundary_type)
7504     {
7505     case ATK_TEXT_BOUNDARY_CHAR:
7506       gtk_text_iter_backward_char(&start);
7507       break;
7508     case ATK_TEXT_BOUNDARY_WORD_START:
7509       if (!gtk_text_iter_starts_word (&start))
7510         gtk_text_iter_backward_word_start (&start);
7511       end = start;
7512       gtk_text_iter_backward_word_start(&start);
7513       break;
7514     case ATK_TEXT_BOUNDARY_WORD_END:
7515       if (gtk_text_iter_inside_word (&start) &&
7516           !gtk_text_iter_starts_word (&start))
7517         gtk_text_iter_backward_word_start (&start);
7518       while (!gtk_text_iter_ends_word (&start))
7519         {
7520           if (!gtk_text_iter_backward_char (&start))
7521             break;
7522         }
7523       end = start;
7524       gtk_text_iter_backward_word_start(&start);
7525       while (!gtk_text_iter_ends_word (&start))
7526         {
7527           if (!gtk_text_iter_backward_char (&start))
7528             break;
7529         }
7530       break;
7531     case ATK_TEXT_BOUNDARY_SENTENCE_START:
7532       if (!gtk_text_iter_starts_sentence (&start))
7533         gtk_text_iter_backward_sentence_start (&start);
7534       end = start;
7535       gtk_text_iter_backward_sentence_start (&start);
7536       break;
7537     case ATK_TEXT_BOUNDARY_SENTENCE_END:
7538       if (gtk_text_iter_inside_sentence (&start) &&
7539           !gtk_text_iter_starts_sentence (&start))
7540         gtk_text_iter_backward_sentence_start (&start);
7541       while (!gtk_text_iter_ends_sentence (&start))
7542         {
7543           if (!gtk_text_iter_backward_char (&start))
7544             break;
7545         }
7546       end = start;
7547       gtk_text_iter_backward_sentence_start (&start);
7548       while (!gtk_text_iter_ends_sentence (&start))
7549         {
7550           if (!gtk_text_iter_backward_char (&start))
7551             break;
7552         }
7553       break;
7554    case ATK_TEXT_BOUNDARY_LINE_START:
7555    case ATK_TEXT_BOUNDARY_LINE_END:
7556 #if 0
7557       icon_view = GTK_ICON_VIEW (item->widget);
7558       /* FIXME we probably have to use GailTextCell to salvage this */
7559       gtk_icon_view_update_item_text (icon_view, item->item);
7560       get_pango_text_offsets (icon_view->priv->layout,
7561                               buffer,
7562                               0,
7563                               boundary_type,
7564                               offset,
7565                               start_offset,
7566                               end_offset,
7567                               &start,
7568                               &end);
7569 #endif
7570       break;
7571     }
7572
7573   *start_offset = gtk_text_iter_get_offset (&start);
7574   *end_offset = gtk_text_iter_get_offset (&end);
7575
7576   return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
7577 }
7578
7579 static gchar*
7580 gtk_icon_view_item_accessible_text_get_text_at_offset (AtkText         *text,
7581                                                        gint            offset,
7582                                                        AtkTextBoundary boundary_type,
7583                                                        gint            *start_offset,
7584                                                        gint            *end_offset)
7585 {
7586   GtkIconViewItemAccessible *item;
7587   GtkTextIter start, end;
7588   GtkTextBuffer *buffer;
7589 #if 0
7590   GtkIconView *icon_view;
7591 #endif
7592
7593   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7594
7595   if (!GTK_IS_ICON_VIEW (item->widget))
7596     return NULL;
7597
7598   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7599     return NULL;
7600
7601   buffer = item->text_buffer;
7602
7603   if (!gtk_text_buffer_get_char_count (buffer))
7604     {
7605       *start_offset = 0;
7606       *end_offset = 0;
7607       return g_strdup ("");
7608     }
7609   gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
7610
7611   end = start;
7612
7613   switch (boundary_type)
7614     {
7615     case ATK_TEXT_BOUNDARY_CHAR:
7616       gtk_text_iter_forward_char (&end);
7617       break;
7618     case ATK_TEXT_BOUNDARY_WORD_START:
7619       if (!gtk_text_iter_starts_word (&start))
7620         gtk_text_iter_backward_word_start (&start);
7621       if (gtk_text_iter_inside_word (&end))
7622         gtk_text_iter_forward_word_end (&end);
7623       while (!gtk_text_iter_starts_word (&end))
7624         {
7625           if (!gtk_text_iter_forward_char (&end))
7626             break;
7627         }
7628       break;
7629     case ATK_TEXT_BOUNDARY_WORD_END:
7630       if (gtk_text_iter_inside_word (&start) &&
7631           !gtk_text_iter_starts_word (&start))
7632         gtk_text_iter_backward_word_start (&start);
7633       while (!gtk_text_iter_ends_word (&start))
7634         {
7635           if (!gtk_text_iter_backward_char (&start))
7636             break;
7637         }
7638       gtk_text_iter_forward_word_end (&end);
7639       break;
7640     case ATK_TEXT_BOUNDARY_SENTENCE_START:
7641       if (!gtk_text_iter_starts_sentence (&start))
7642         gtk_text_iter_backward_sentence_start (&start);
7643       if (gtk_text_iter_inside_sentence (&end))
7644         gtk_text_iter_forward_sentence_end (&end);
7645       while (!gtk_text_iter_starts_sentence (&end))
7646         {
7647           if (!gtk_text_iter_forward_char (&end))
7648             break;
7649         }
7650       break;
7651     case ATK_TEXT_BOUNDARY_SENTENCE_END:
7652       if (gtk_text_iter_inside_sentence (&start) &&
7653           !gtk_text_iter_starts_sentence (&start))
7654         gtk_text_iter_backward_sentence_start (&start);
7655       while (!gtk_text_iter_ends_sentence (&start))
7656         {
7657           if (!gtk_text_iter_backward_char (&start))
7658             break;
7659         }
7660       gtk_text_iter_forward_sentence_end (&end);
7661       break;
7662    case ATK_TEXT_BOUNDARY_LINE_START:
7663    case ATK_TEXT_BOUNDARY_LINE_END:
7664 #if 0
7665       icon_view = GTK_ICON_VIEW (item->widget);
7666       /* FIXME we probably have to use GailTextCell to salvage this */
7667       gtk_icon_view_update_item_text (icon_view, item->item);
7668       get_pango_text_offsets (icon_view->priv->layout,
7669                               buffer,
7670                               1,
7671                               boundary_type,
7672                               offset,
7673                               start_offset,
7674                               end_offset,
7675                               &start,
7676                               &end);
7677 #endif
7678       break;
7679     }
7680
7681
7682   *start_offset = gtk_text_iter_get_offset (&start);
7683   *end_offset = gtk_text_iter_get_offset (&end);
7684
7685   return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
7686 }
7687
7688 static gchar*
7689 gtk_icon_view_item_accessible_text_get_text_after_offset (AtkText         *text,
7690                                                           gint            offset,
7691                                                           AtkTextBoundary boundary_type,
7692                                                           gint            *start_offset,
7693                                                           gint            *end_offset)
7694 {
7695   GtkIconViewItemAccessible *item;
7696   GtkTextIter start, end;
7697   GtkTextBuffer *buffer;
7698 #if 0
7699   GtkIconView *icon_view;
7700 #endif
7701
7702   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7703
7704   if (!GTK_IS_ICON_VIEW (item->widget))
7705     return NULL;
7706
7707   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7708     return NULL;
7709
7710   buffer = item->text_buffer;
7711
7712   if (!gtk_text_buffer_get_char_count (buffer))
7713     {
7714       *start_offset = 0;
7715       *end_offset = 0;
7716       return g_strdup ("");
7717     }
7718   gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
7719
7720   end = start;
7721
7722   switch (boundary_type)
7723     {
7724     case ATK_TEXT_BOUNDARY_CHAR:
7725       gtk_text_iter_forward_char(&start);
7726       gtk_text_iter_forward_chars(&end, 2);
7727       break;
7728     case ATK_TEXT_BOUNDARY_WORD_START:
7729       if (gtk_text_iter_inside_word (&end))
7730         gtk_text_iter_forward_word_end (&end);
7731       while (!gtk_text_iter_starts_word (&end))
7732         {
7733           if (!gtk_text_iter_forward_char (&end))
7734             break;
7735         }
7736       start = end;
7737       if (!gtk_text_iter_is_end (&end))
7738         {
7739           gtk_text_iter_forward_word_end (&end);
7740           while (!gtk_text_iter_starts_word (&end))
7741             {
7742               if (!gtk_text_iter_forward_char (&end))
7743                 break;
7744             }
7745         }
7746       break;
7747     case ATK_TEXT_BOUNDARY_WORD_END:
7748       gtk_text_iter_forward_word_end (&end);
7749       start = end;
7750       if (!gtk_text_iter_is_end (&end))
7751         gtk_text_iter_forward_word_end (&end);
7752       break;
7753     case ATK_TEXT_BOUNDARY_SENTENCE_START:
7754       if (gtk_text_iter_inside_sentence (&end))
7755         gtk_text_iter_forward_sentence_end (&end);
7756       while (!gtk_text_iter_starts_sentence (&end))
7757         {
7758           if (!gtk_text_iter_forward_char (&end))
7759             break;
7760         }
7761       start = end;
7762       if (!gtk_text_iter_is_end (&end))
7763         {
7764           gtk_text_iter_forward_sentence_end (&end);
7765           while (!gtk_text_iter_starts_sentence (&end))
7766             {
7767               if (!gtk_text_iter_forward_char (&end))
7768                 break;
7769             }
7770         }
7771       break;
7772     case ATK_TEXT_BOUNDARY_SENTENCE_END:
7773       gtk_text_iter_forward_sentence_end (&end);
7774       start = end;
7775       if (!gtk_text_iter_is_end (&end))
7776         gtk_text_iter_forward_sentence_end (&end);
7777       break;
7778    case ATK_TEXT_BOUNDARY_LINE_START:
7779    case ATK_TEXT_BOUNDARY_LINE_END:
7780 #if 0
7781       icon_view = GTK_ICON_VIEW (item->widget);
7782       /* FIXME we probably have to use GailTextCell to salvage this */
7783       gtk_icon_view_update_item_text (icon_view, item->item);
7784       get_pango_text_offsets (icon_view->priv->layout,
7785                               buffer,
7786                               2,
7787                               boundary_type,
7788                               offset,
7789                               start_offset,
7790                               end_offset,
7791                               &start,
7792                               &end);
7793 #endif
7794       break;
7795     }
7796   *start_offset = gtk_text_iter_get_offset (&start);
7797   *end_offset = gtk_text_iter_get_offset (&end);
7798
7799   return gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
7800 }
7801
7802 static gint
7803 gtk_icon_view_item_accessible_text_get_character_count (AtkText *text)
7804 {
7805   GtkIconViewItemAccessible *item;
7806
7807   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7808
7809   if (!GTK_IS_ICON_VIEW (item->widget))
7810     return 0;
7811
7812   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7813     return 0;
7814
7815   return gtk_text_buffer_get_char_count (item->text_buffer);
7816 }
7817
7818 static void
7819 gtk_icon_view_item_accessible_text_get_character_extents (AtkText      *text,
7820                                                           gint         offset,
7821                                                           gint         *x,
7822                                                           gint         *y,
7823                                                           gint         *width,
7824                                                           gint         *height,
7825                                                           AtkCoordType coord_type)
7826 {
7827   GtkIconViewItemAccessible *item;
7828 #if 0
7829   GtkIconView *icon_view;
7830   PangoRectangle char_rect;
7831   const gchar *item_text;
7832   gint index;
7833 #endif
7834
7835   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7836
7837   if (!GTK_IS_ICON_VIEW (item->widget))
7838     return;
7839
7840   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7841     return;
7842
7843 #if 0
7844   icon_view = GTK_ICON_VIEW (item->widget);
7845       /* FIXME we probably have to use GailTextCell to salvage this */
7846   gtk_icon_view_update_item_text (icon_view, item->item);
7847   item_text = pango_layout_get_text (icon_view->priv->layout);
7848   index = g_utf8_offset_to_pointer (item_text, offset) - item_text;
7849   pango_layout_index_to_pos (icon_view->priv->layout, index, &char_rect);
7850
7851   atk_component_get_position (ATK_COMPONENT (text), x, y, coord_type);
7852   *x += item->item->layout_x - item->item->x + char_rect.x / PANGO_SCALE;
7853   /* Look at gtk_icon_view_paint_item() to see where the text is. */
7854   *x -=  ((item->item->width - item->item->layout_width) / 2) + (MAX (item->item->pixbuf_width, icon_view->priv->item_width) - item->item->width) / 2,
7855   *y += item->item->layout_y - item->item->y + char_rect.y / PANGO_SCALE;
7856   *width = char_rect.width / PANGO_SCALE;
7857   *height = char_rect.height / PANGO_SCALE;
7858 #endif
7859 }
7860
7861 static gint
7862 gtk_icon_view_item_accessible_text_get_offset_at_point (AtkText      *text,
7863                                                         gint          x,
7864                                                         gint          y,
7865                                                         AtkCoordType coord_type)
7866 {
7867   GtkIconViewItemAccessible *item;
7868   gint offset = 0;
7869 #if 0
7870   GtkIconView *icon_view;
7871   const gchar *item_text;
7872   gint index;
7873   gint l_x, l_y;
7874 #endif
7875
7876   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
7877
7878   if (!GTK_IS_ICON_VIEW (item->widget))
7879     return -1;
7880
7881   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7882     return -1;
7883
7884 #if 0
7885   icon_view = GTK_ICON_VIEW (item->widget);
7886       /* FIXME we probably have to use GailTextCell to salvage this */
7887   gtk_icon_view_update_item_text (icon_view, item->item);
7888   atk_component_get_position (ATK_COMPONENT (text), &l_x, &l_y, coord_type);
7889   x -= l_x + item->item->layout_x - item->item->x;
7890   x +=  ((item->item->width - item->item->layout_width) / 2) + (MAX (item->item->pixbuf_width, icon_view->priv->item_width) - item->item->width) / 2,
7891   y -= l_y + item->item->layout_y - item->item->y;
7892   item_text = pango_layout_get_text (icon_view->priv->layout);
7893   if (!pango_layout_xy_to_index (icon_view->priv->layout,
7894                                 x * PANGO_SCALE,
7895                                 y * PANGO_SCALE,
7896                                 &index, NULL))
7897     {
7898       if (x < 0 || y < 0)
7899         index = 0;
7900       else
7901         index = -1;
7902     }
7903   if (index == -1)
7904     offset = g_utf8_strlen (item_text, -1);
7905   else
7906     offset = g_utf8_pointer_to_offset (item_text, item_text + index);
7907 #endif
7908   return offset;
7909 }
7910
7911 static void
7912 atk_text_item_interface_init (AtkTextIface *iface)
7913 {
7914   iface->get_text = gtk_icon_view_item_accessible_text_get_text;
7915   iface->get_character_at_offset = gtk_icon_view_item_accessible_text_get_character_at_offset;
7916   iface->get_text_before_offset = gtk_icon_view_item_accessible_text_get_text_before_offset;
7917   iface->get_text_at_offset = gtk_icon_view_item_accessible_text_get_text_at_offset;
7918   iface->get_text_after_offset = gtk_icon_view_item_accessible_text_get_text_after_offset;
7919   iface->get_character_count = gtk_icon_view_item_accessible_text_get_character_count;
7920   iface->get_character_extents = gtk_icon_view_item_accessible_text_get_character_extents;
7921   iface->get_offset_at_point = gtk_icon_view_item_accessible_text_get_offset_at_point;
7922 }
7923
7924 static void
7925 gtk_icon_view_item_accessible_get_extents (AtkComponent *component,
7926                                            gint         *x,
7927                                            gint         *y,
7928                                            gint         *width,
7929                                            gint         *height,
7930                                            AtkCoordType  coord_type)
7931 {
7932   GtkIconViewItemAccessible *item;
7933   AtkObject *parent_obj;
7934   gint l_x, l_y;
7935
7936   g_return_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (component));
7937
7938   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (component);
7939   if (!GTK_IS_WIDGET (item->widget))
7940     return;
7941
7942   if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
7943     return;
7944
7945   *width = item->item->width;
7946   *height = item->item->height;
7947   if (gtk_icon_view_item_accessible_is_showing (item))
7948     {
7949       parent_obj = gtk_widget_get_accessible (item->widget);
7950       atk_component_get_position (ATK_COMPONENT (parent_obj), &l_x, &l_y, coord_type);
7951       *x = l_x + item->item->x;
7952       *y = l_y + item->item->y;
7953     }
7954   else
7955     {
7956       *x = G_MININT;
7957       *y = G_MININT;
7958     }
7959 }
7960
7961 static gboolean
7962 gtk_icon_view_item_accessible_grab_focus (AtkComponent *component)
7963 {
7964   GtkIconViewItemAccessible *item;
7965   GtkWidget *toplevel;
7966
7967   g_return_val_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (component), FALSE);
7968
7969   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (component);
7970   if (!GTK_IS_WIDGET (item->widget))
7971     return FALSE;
7972
7973   gtk_widget_grab_focus (item->widget);
7974   gtk_icon_view_set_cursor_item (GTK_ICON_VIEW (item->widget), item->item, -1);
7975   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (item->widget));
7976   if (GTK_WIDGET_TOPLEVEL (toplevel))
7977     gtk_window_present (GTK_WINDOW (toplevel));
7978
7979   return TRUE;
7980 }
7981
7982 static void
7983 atk_component_item_interface_init (AtkComponentIface *iface)
7984 {
7985   iface->get_extents = gtk_icon_view_item_accessible_get_extents;
7986   iface->grab_focus = gtk_icon_view_item_accessible_grab_focus;
7987 }
7988
7989 static gboolean
7990 gtk_icon_view_item_accessible_add_state (GtkIconViewItemAccessible *item,
7991                                          AtkStateType               state_type,
7992                                          gboolean                   emit_signal)
7993 {
7994   gboolean rc;
7995
7996   rc = atk_state_set_add_state (item->state_set, state_type);
7997   /*
7998    * The signal should only be generated if the value changed,
7999    * not when the item is set up.  So states that are set
8000    * initially should pass FALSE as the emit_signal argument.
8001    */
8002
8003   if (emit_signal)
8004     {
8005       atk_object_notify_state_change (ATK_OBJECT (item), state_type, TRUE);
8006       /* If state_type is ATK_STATE_VISIBLE, additional notification */
8007       if (state_type == ATK_STATE_VISIBLE)
8008         g_signal_emit_by_name (item, "visible_data_changed");
8009     }
8010
8011   return rc;
8012 }
8013
8014 static gboolean
8015 gtk_icon_view_item_accessible_remove_state (GtkIconViewItemAccessible *item,
8016                                             AtkStateType               state_type,
8017                                             gboolean                   emit_signal)
8018 {
8019   if (atk_state_set_contains_state (item->state_set, state_type))
8020     {
8021       gboolean rc;
8022
8023       rc = atk_state_set_remove_state (item->state_set, state_type);
8024       /*
8025        * The signal should only be generated if the value changed,
8026        * not when the item is set up.  So states that are set
8027        * initially should pass FALSE as the emit_signal argument.
8028        */
8029
8030       if (emit_signal)
8031         {
8032           atk_object_notify_state_change (ATK_OBJECT (item), state_type, FALSE);
8033           /* If state_type is ATK_STATE_VISIBLE, additional notification */
8034           if (state_type == ATK_STATE_VISIBLE)
8035             g_signal_emit_by_name (item, "visible_data_changed");
8036         }
8037
8038       return rc;
8039     }
8040   else
8041     return FALSE;
8042 }
8043
8044 static gboolean
8045 gtk_icon_view_item_accessible_is_showing (GtkIconViewItemAccessible *item)
8046 {
8047   GtkIconView *icon_view;
8048   GdkRectangle visible_rect;
8049   gboolean is_showing;
8050
8051   /*
8052    * An item is considered "SHOWING" if any part of the item is in the
8053    * visible rectangle.
8054    */
8055
8056   if (!GTK_IS_ICON_VIEW (item->widget))
8057     return FALSE;
8058
8059   if (item->item == NULL)
8060     return FALSE;
8061
8062   icon_view = GTK_ICON_VIEW (item->widget);
8063   visible_rect.x = 0;
8064   if (icon_view->priv->hadjustment)
8065     visible_rect.x += icon_view->priv->hadjustment->value;
8066   visible_rect.y = 0;
8067   if (icon_view->priv->hadjustment)
8068     visible_rect.y += icon_view->priv->vadjustment->value;
8069   visible_rect.width = item->widget->allocation.width;
8070   visible_rect.height = item->widget->allocation.height;
8071
8072   if (((item->item->x + item->item->width) < visible_rect.x) ||
8073      ((item->item->y + item->item->height) < (visible_rect.y)) ||
8074      (item->item->x > (visible_rect.x + visible_rect.width)) ||
8075      (item->item->y > (visible_rect.y + visible_rect.height)))
8076     is_showing =  FALSE;
8077   else
8078     is_showing = TRUE;
8079
8080   return is_showing;
8081 }
8082
8083 static gboolean
8084 gtk_icon_view_item_accessible_set_visibility (GtkIconViewItemAccessible *item,
8085                                               gboolean                   emit_signal)
8086 {
8087   if (gtk_icon_view_item_accessible_is_showing (item))
8088     return gtk_icon_view_item_accessible_add_state (item, ATK_STATE_SHOWING,
8089                                                     emit_signal);
8090   else
8091     return gtk_icon_view_item_accessible_remove_state (item, ATK_STATE_SHOWING,
8092                                                        emit_signal);
8093 }
8094
8095 static void
8096 gtk_icon_view_item_accessible_object_init (GtkIconViewItemAccessible *item)
8097 {
8098   gint i;
8099
8100   item->state_set = atk_state_set_new ();
8101
8102   atk_state_set_add_state (item->state_set, ATK_STATE_ENABLED);
8103   atk_state_set_add_state (item->state_set, ATK_STATE_FOCUSABLE);
8104   atk_state_set_add_state (item->state_set, ATK_STATE_SENSITIVE);
8105   atk_state_set_add_state (item->state_set, ATK_STATE_SELECTABLE);
8106   atk_state_set_add_state (item->state_set, ATK_STATE_VISIBLE);
8107
8108   for (i = 0; i < LAST_ACTION; i++)
8109     item->action_descriptions[i] = NULL;
8110
8111   item->image_description = NULL;
8112
8113   item->action_idle_handler = 0;
8114 }
8115
8116 static void
8117 gtk_icon_view_item_accessible_finalize (GObject *object)
8118 {
8119   GtkIconViewItemAccessible *item;
8120   gint i;
8121
8122   g_return_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (object));
8123
8124   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (object);
8125
8126   if (item->widget)
8127     g_object_remove_weak_pointer (G_OBJECT (item->widget), (gpointer) &item->widget);
8128
8129   if (item->state_set)
8130     g_object_unref (item->state_set);
8131
8132   if (item->text_buffer)
8133      g_object_unref (item->text_buffer);
8134
8135   for (i = 0; i < LAST_ACTION; i++)
8136     g_free (item->action_descriptions[i]);
8137
8138   g_free (item->image_description);
8139
8140   if (item->action_idle_handler)
8141     {
8142       g_source_remove (item->action_idle_handler);
8143       item->action_idle_handler = 0;
8144     }
8145
8146   G_OBJECT_CLASS (accessible_item_parent_class)->finalize (object);
8147 }
8148
8149 static G_CONST_RETURN gchar*
8150 gtk_icon_view_item_accessible_get_name (AtkObject *obj)
8151 {
8152   if (obj->name)
8153     return obj->name;
8154   else
8155     {
8156       GtkIconViewItemAccessible *item;
8157       GtkTextIter start_iter;
8158       GtkTextIter end_iter;
8159
8160       item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (obj);
8161
8162       gtk_text_buffer_get_start_iter (item->text_buffer, &start_iter);
8163       gtk_text_buffer_get_end_iter (item->text_buffer, &end_iter);
8164
8165       return gtk_text_buffer_get_text (item->text_buffer, &start_iter, &end_iter, FALSE);
8166     }
8167 }
8168
8169 static AtkObject*
8170 gtk_icon_view_item_accessible_get_parent (AtkObject *obj)
8171 {
8172   GtkIconViewItemAccessible *item;
8173
8174   g_return_val_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (obj), NULL);
8175   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (obj);
8176
8177   if (item->widget)
8178     return gtk_widget_get_accessible (item->widget);
8179   else
8180     return NULL;
8181 }
8182
8183 static gint
8184 gtk_icon_view_item_accessible_get_index_in_parent (AtkObject *obj)
8185 {
8186   GtkIconViewItemAccessible *item;
8187
8188   g_return_val_if_fail (GTK_IS_ICON_VIEW_ITEM_ACCESSIBLE (obj), 0);
8189   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (obj);
8190
8191   return item->item->index;
8192 }
8193
8194 static AtkStateSet *
8195 gtk_icon_view_item_accessible_ref_state_set (AtkObject *obj)
8196 {
8197   GtkIconViewItemAccessible *item;
8198   GtkIconView *icon_view;
8199
8200   item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (obj);
8201   g_return_val_if_fail (item->state_set, NULL);
8202
8203   if (!item->widget)
8204     return NULL;
8205
8206   icon_view = GTK_ICON_VIEW (item->widget);
8207   if (icon_view->priv->cursor_item == item->item)
8208     atk_state_set_add_state (item->state_set, ATK_STATE_FOCUSED);
8209   else
8210     atk_state_set_remove_state (item->state_set, ATK_STATE_FOCUSED);
8211
8212   return g_object_ref (item->state_set);
8213 }
8214
8215 static void
8216 gtk_icon_view_item_accessible_class_init (AtkObjectClass *klass)
8217 {
8218   GObjectClass *gobject_class;
8219
8220   accessible_item_parent_class = g_type_class_peek_parent (klass);
8221
8222   gobject_class = (GObjectClass *)klass;
8223
8224   gobject_class->finalize = gtk_icon_view_item_accessible_finalize;
8225
8226   klass->get_index_in_parent = gtk_icon_view_item_accessible_get_index_in_parent;
8227   klass->get_name = gtk_icon_view_item_accessible_get_name;
8228   klass->get_parent = gtk_icon_view_item_accessible_get_parent;
8229   klass->ref_state_set = gtk_icon_view_item_accessible_ref_state_set;
8230 }
8231
8232 static GType
8233 gtk_icon_view_item_accessible_get_type (void)
8234 {
8235   static GType type = 0;
8236
8237   if (!type)
8238     {
8239       const GTypeInfo tinfo =
8240       {
8241         sizeof (GtkIconViewItemAccessibleClass),
8242         (GBaseInitFunc) NULL, /* base init */
8243         (GBaseFinalizeFunc) NULL, /* base finalize */
8244         (GClassInitFunc) gtk_icon_view_item_accessible_class_init, /* class init */
8245         (GClassFinalizeFunc) NULL, /* class finalize */
8246         NULL, /* class data */
8247         sizeof (GtkIconViewItemAccessible), /* instance size */
8248         0, /* nb preallocs */
8249         (GInstanceInitFunc) gtk_icon_view_item_accessible_object_init, /* instance init */
8250         NULL /* value table */
8251       };
8252
8253       static const GInterfaceInfo atk_component_info =
8254       {
8255         (GInterfaceInitFunc) atk_component_item_interface_init,
8256         (GInterfaceFinalizeFunc) NULL,
8257         NULL
8258       };
8259       static const GInterfaceInfo atk_action_info =
8260       {
8261         (GInterfaceInitFunc) atk_action_item_interface_init,
8262         (GInterfaceFinalizeFunc) NULL,
8263         NULL
8264       };
8265       static const GInterfaceInfo atk_image_info =
8266       {
8267         (GInterfaceInitFunc) atk_image_item_interface_init,
8268         (GInterfaceFinalizeFunc) NULL,
8269         NULL
8270       };
8271       static const GInterfaceInfo atk_text_info =
8272       {
8273         (GInterfaceInitFunc) atk_text_item_interface_init,
8274         (GInterfaceFinalizeFunc) NULL,
8275         NULL
8276       };
8277
8278       type = g_type_register_static (ATK_TYPE_OBJECT,
8279                                      I_("GtkIconViewItemAccessible"), &tinfo, 0);
8280       g_type_add_interface_static (type, ATK_TYPE_COMPONENT,
8281                                    &atk_component_info);
8282       g_type_add_interface_static (type, ATK_TYPE_ACTION,
8283                                    &atk_action_info);
8284       g_type_add_interface_static (type, ATK_TYPE_IMAGE,
8285                                    &atk_image_info);
8286       g_type_add_interface_static (type, ATK_TYPE_TEXT,
8287                                    &atk_text_info);
8288     }
8289
8290   return type;
8291 }
8292
8293 #define GTK_TYPE_ICON_VIEW_ACCESSIBLE      (gtk_icon_view_accessible_get_type ())
8294 #define GTK_ICON_VIEW_ACCESSIBLE(obj)      (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_ICON_VIEW_ACCESSIBLE, GtkIconViewAccessible))
8295 #define GTK_IS_ICON_VIEW_ACCESSIBLE(obj)   (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_ICON_VIEW_ACCESSIBLE))
8296
8297 static GType gtk_icon_view_accessible_get_type (void);
8298
8299 typedef struct
8300 {
8301    AtkObject parent;
8302 } GtkIconViewAccessible;
8303
8304 typedef struct
8305 {
8306   AtkObject *item;
8307   gint       index;
8308 } GtkIconViewItemAccessibleInfo;
8309
8310 typedef struct
8311 {
8312   GList *items;
8313
8314   GtkAdjustment *old_hadj;
8315   GtkAdjustment *old_vadj;
8316
8317   GtkTreeModel *model;
8318
8319 } GtkIconViewAccessiblePrivate;
8320
8321 static GtkIconViewAccessiblePrivate *
8322 gtk_icon_view_accessible_get_priv (AtkObject *accessible)
8323 {
8324   return g_object_get_qdata (G_OBJECT (accessible),
8325                              accessible_private_data_quark);
8326 }
8327
8328 static void
8329 gtk_icon_view_item_accessible_info_new (AtkObject *accessible,
8330                                         AtkObject *item,
8331                                         gint       index)
8332 {
8333   GtkIconViewItemAccessibleInfo *info;
8334   GtkIconViewItemAccessibleInfo *tmp_info;
8335   GtkIconViewAccessiblePrivate *priv;
8336   GList *items;
8337
8338   info = g_new (GtkIconViewItemAccessibleInfo, 1);
8339   info->item = item;
8340   info->index = index;
8341
8342   priv = gtk_icon_view_accessible_get_priv (accessible);
8343   items = priv->items;
8344   while (items)
8345     {
8346       tmp_info = items->data;
8347       if (tmp_info->index > index)
8348         break;
8349       items = items->next;
8350     }
8351   priv->items = g_list_insert_before (priv->items, items, info);
8352   priv->old_hadj = NULL;
8353   priv->old_vadj = NULL;
8354 }
8355
8356 static gint
8357 gtk_icon_view_accessible_get_n_children (AtkObject *accessible)
8358 {
8359   GtkIconView *icon_view;
8360   GtkWidget *widget;
8361
8362   widget = GTK_ACCESSIBLE (accessible)->widget;
8363   if (!widget)
8364       return 0;
8365
8366   icon_view = GTK_ICON_VIEW (widget);
8367
8368   return g_list_length (icon_view->priv->items);
8369 }
8370
8371 static AtkObject *
8372 gtk_icon_view_accessible_find_child (AtkObject *accessible,
8373                                      gint       index)
8374 {
8375   GtkIconViewAccessiblePrivate *priv;
8376   GtkIconViewItemAccessibleInfo *info;
8377   GList *items;
8378
8379   priv = gtk_icon_view_accessible_get_priv (accessible);
8380   items = priv->items;
8381
8382   while (items)
8383     {
8384       info = items->data;
8385       if (info->index == index)
8386         return info->item;
8387       items = items->next;
8388     }
8389   return NULL;
8390 }
8391
8392 static AtkObject *
8393 gtk_icon_view_accessible_ref_child (AtkObject *accessible,
8394                                     gint       index)
8395 {
8396   GtkIconView *icon_view;
8397   GtkWidget *widget;
8398   GList *icons;
8399   AtkObject *obj;
8400   GtkIconViewItemAccessible *a11y_item;
8401
8402   widget = GTK_ACCESSIBLE (accessible)->widget;
8403   if (!widget)
8404     return NULL;
8405
8406   icon_view = GTK_ICON_VIEW (widget);
8407   icons = g_list_nth (icon_view->priv->items, index);
8408   obj = NULL;
8409   if (icons)
8410     {
8411       GtkIconViewItem *item = icons->data;
8412
8413       g_return_val_if_fail (item->index == index, NULL);
8414       obj = gtk_icon_view_accessible_find_child (accessible, index);
8415       if (!obj)
8416         {
8417           gchar *text;
8418
8419           obj = g_object_new (gtk_icon_view_item_accessible_get_type (), NULL);
8420           gtk_icon_view_item_accessible_info_new (accessible,
8421                                                   obj,
8422                                                   index);
8423           obj->role = ATK_ROLE_ICON;
8424           a11y_item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (obj);
8425           a11y_item->item = item;
8426           a11y_item->widget = widget;
8427           a11y_item->text_buffer = gtk_text_buffer_new (NULL);
8428
8429           gtk_icon_view_set_cell_data (icon_view, item);
8430           text = get_text (icon_view, item);
8431           if (text)
8432             {
8433               gtk_text_buffer_set_text (a11y_item->text_buffer, text, -1);
8434               g_free (text);
8435             }
8436
8437           gtk_icon_view_item_accessible_set_visibility (a11y_item, FALSE);
8438           g_object_add_weak_pointer (G_OBJECT (widget), (gpointer) &(a11y_item->widget));
8439        }
8440       g_object_ref (obj);
8441     }
8442   return obj;
8443 }
8444
8445 static void
8446 gtk_icon_view_accessible_traverse_items (GtkIconViewAccessible *view,
8447                                          GList                 *list)
8448 {
8449   GtkIconViewAccessiblePrivate *priv;
8450   GtkIconViewItemAccessibleInfo *info;
8451   GtkIconViewItemAccessible *item;
8452   GList *items;
8453
8454   priv =  gtk_icon_view_accessible_get_priv (ATK_OBJECT (view));
8455   if (priv->items)
8456     {
8457       GtkWidget *widget;
8458       gboolean act_on_item;
8459
8460       widget = GTK_ACCESSIBLE (view)->widget;
8461       if (widget == NULL)
8462         return;
8463
8464       items = priv->items;
8465
8466       act_on_item = (list == NULL);
8467
8468       while (items)
8469         {
8470
8471           info = (GtkIconViewItemAccessibleInfo *)items->data;
8472           item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (info->item);
8473
8474           if (act_on_item == FALSE && list == items)
8475             act_on_item = TRUE;
8476
8477           if (act_on_item)
8478             gtk_icon_view_item_accessible_set_visibility (item, TRUE);
8479
8480           items = items->next;
8481        }
8482    }
8483 }
8484
8485 static void
8486 gtk_icon_view_accessible_adjustment_changed (GtkAdjustment *adjustment,
8487                                              GtkIconView   *icon_view)
8488 {
8489   AtkObject *obj;
8490   GtkIconViewAccessible *view;
8491
8492   /*
8493    * The scrollbars have changed
8494    */
8495   obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
8496   view = GTK_ICON_VIEW_ACCESSIBLE (obj);
8497
8498   gtk_icon_view_accessible_traverse_items (view, NULL);
8499 }
8500
8501 static void
8502 gtk_icon_view_accessible_set_scroll_adjustments (GtkWidget      *widget,
8503                                                  GtkAdjustment *hadj,
8504                                                  GtkAdjustment *vadj)
8505 {
8506   AtkObject *atk_obj;
8507   GtkIconViewAccessiblePrivate *priv;
8508
8509   atk_obj = gtk_widget_get_accessible (widget);
8510   priv = gtk_icon_view_accessible_get_priv (atk_obj);
8511
8512   if (priv->old_hadj != hadj)
8513     {
8514       if (priv->old_hadj)
8515         {
8516           g_object_remove_weak_pointer (G_OBJECT (priv->old_hadj),
8517                                         (gpointer *)&priv->old_hadj);
8518
8519           g_signal_handlers_disconnect_by_func (priv->old_hadj,
8520                                                 (gpointer) gtk_icon_view_accessible_adjustment_changed,
8521                                                 widget);
8522         }
8523       priv->old_hadj = hadj;
8524       if (priv->old_hadj)
8525         {
8526           g_object_add_weak_pointer (G_OBJECT (priv->old_hadj),
8527                                      (gpointer *)&priv->old_hadj);
8528           g_signal_connect (hadj,
8529                             "value-changed",
8530                             G_CALLBACK (gtk_icon_view_accessible_adjustment_changed),
8531                             widget);
8532         }
8533     }
8534   if (priv->old_vadj != vadj)
8535     {
8536       if (priv->old_vadj)
8537         {
8538           g_object_remove_weak_pointer (G_OBJECT (priv->old_vadj),
8539                                         (gpointer *)&priv->old_vadj);
8540
8541           g_signal_handlers_disconnect_by_func (priv->old_vadj,
8542                                                 (gpointer) gtk_icon_view_accessible_adjustment_changed,
8543                                                 widget);
8544         }
8545       priv->old_vadj = vadj;
8546       if (priv->old_vadj)
8547         {
8548           g_object_add_weak_pointer (G_OBJECT (priv->old_vadj),
8549                                      (gpointer *)&priv->old_vadj);
8550           g_signal_connect (vadj,
8551                             "value-changed",
8552                             G_CALLBACK (gtk_icon_view_accessible_adjustment_changed),
8553                             widget);
8554         }
8555     }
8556 }
8557
8558 static void
8559 gtk_icon_view_accessible_model_row_changed (GtkTreeModel *tree_model,
8560                                             GtkTreePath  *path,
8561                                             GtkTreeIter  *iter,
8562                                             gpointer     user_data)
8563 {
8564   AtkObject *atk_obj;
8565
8566   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (user_data));
8567   g_signal_emit_by_name (atk_obj, "visible_data_changed");
8568
8569   return;
8570 }
8571
8572 static void
8573 gtk_icon_view_accessible_model_row_inserted (GtkTreeModel *tree_model,
8574                                              GtkTreePath  *path,
8575                                              GtkTreeIter  *iter,
8576                                              gpointer     user_data)
8577 {
8578   GtkIconViewAccessiblePrivate *priv;
8579   GtkIconViewItemAccessibleInfo *info;
8580   GtkIconViewAccessible *view;
8581   GtkIconViewItemAccessible *item;
8582   GList *items;
8583   GList *tmp_list;
8584   AtkObject *atk_obj;
8585   gint index;
8586
8587   index = gtk_tree_path_get_indices(path)[0];
8588   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (user_data));
8589   view = GTK_ICON_VIEW_ACCESSIBLE (atk_obj);
8590   priv = gtk_icon_view_accessible_get_priv (atk_obj);
8591
8592   items = priv->items;
8593   tmp_list = NULL;
8594   while (items)
8595     {
8596       info = items->data;
8597       item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (info->item);
8598       if (info->index != item->item->index)
8599         {
8600           if (info->index < index)
8601             g_warning ("Unexpected index value on insertion %d %d", index, info->index);
8602
8603           if (tmp_list == NULL)
8604             tmp_list = items;
8605
8606           info->index = item->item->index;
8607         }
8608
8609       items = items->next;
8610     }
8611   gtk_icon_view_accessible_traverse_items (view, tmp_list);
8612   g_signal_emit_by_name (atk_obj, "children_changed::add",
8613                          index, NULL, NULL);
8614   return;
8615 }
8616
8617 static void
8618 gtk_icon_view_accessible_model_row_deleted (GtkTreeModel *tree_model,
8619                                             GtkTreePath  *path,
8620                                             gpointer     user_data)
8621 {
8622   GtkIconViewAccessiblePrivate *priv;
8623   GtkIconViewItemAccessibleInfo *info;
8624   GtkIconViewAccessible *view;
8625   GtkIconViewItemAccessible *item;
8626   GList *items;
8627   GList *tmp_list;
8628   GList *deleted_item;
8629   AtkObject *atk_obj;
8630   gint index;
8631
8632   index = gtk_tree_path_get_indices(path)[0];
8633   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (user_data));
8634   view = GTK_ICON_VIEW_ACCESSIBLE (atk_obj);
8635   priv = gtk_icon_view_accessible_get_priv (atk_obj);
8636
8637   items = priv->items;
8638   tmp_list = NULL;
8639   deleted_item = NULL;
8640   info = NULL;
8641   while (items)
8642     {
8643       info = items->data;
8644       item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (info->item);
8645       if (info->index == index)
8646         {
8647           deleted_item = items;
8648         }
8649       if (info->index != item->item->index)
8650         {
8651           if (tmp_list == NULL)
8652             tmp_list = items;
8653           else
8654             info->index = item->item->index;
8655         }
8656
8657       items = items->next;
8658     }
8659   gtk_icon_view_accessible_traverse_items (view, tmp_list);
8660   if (deleted_item)
8661     {
8662       info = deleted_item->data;
8663       gtk_icon_view_item_accessible_add_state (GTK_ICON_VIEW_ITEM_ACCESSIBLE (info->item), ATK_STATE_DEFUNCT, TRUE);
8664     }
8665   g_signal_emit_by_name (atk_obj, "children_changed::remove",
8666                          index, NULL, NULL);
8667   if (deleted_item)
8668     {
8669       priv->items = g_list_remove_link (priv->items, deleted_item);
8670       g_free (info);
8671     }
8672
8673   return;
8674 }
8675
8676 static gint
8677 gtk_icon_view_accessible_item_compare (GtkIconViewItemAccessibleInfo *i1,
8678                                        GtkIconViewItemAccessibleInfo *i2)
8679 {
8680   return i1->index - i2->index;
8681 }
8682
8683 static void
8684 gtk_icon_view_accessible_model_rows_reordered (GtkTreeModel *tree_model,
8685                                                GtkTreePath  *path,
8686                                                GtkTreeIter  *iter,
8687                                                gint         *new_order,
8688                                                gpointer     user_data)
8689 {
8690   GtkIconViewAccessiblePrivate *priv;
8691   GtkIconViewItemAccessibleInfo *info;
8692   GtkIconView *icon_view;
8693   GtkIconViewItemAccessible *item;
8694   GList *items;
8695   AtkObject *atk_obj;
8696
8697   atk_obj = gtk_widget_get_accessible (GTK_WIDGET (user_data));
8698   icon_view = GTK_ICON_VIEW (user_data);
8699   priv = gtk_icon_view_accessible_get_priv (atk_obj);
8700
8701   items = priv->items;
8702   while (items)
8703     {
8704       info = items->data;
8705       item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (info->item);
8706       info->index = new_order[info->index];
8707       item->item = g_list_nth_data (icon_view->priv->items, info->index);
8708       items = items->next;
8709     }
8710   priv->items = g_list_sort (priv->items,
8711                              (GCompareFunc)gtk_icon_view_accessible_item_compare);
8712
8713   return;
8714 }
8715
8716 static void
8717 gtk_icon_view_accessible_disconnect_model_signals (GtkTreeModel *model,
8718                                                    GtkWidget *widget)
8719 {
8720   GObject *obj;
8721
8722   obj = G_OBJECT (model);
8723   g_signal_handlers_disconnect_by_func (obj, (gpointer) gtk_icon_view_accessible_model_row_changed, widget);
8724   g_signal_handlers_disconnect_by_func (obj, (gpointer) gtk_icon_view_accessible_model_row_inserted, widget);
8725   g_signal_handlers_disconnect_by_func (obj, (gpointer) gtk_icon_view_accessible_model_row_deleted, widget);
8726   g_signal_handlers_disconnect_by_func (obj, (gpointer) gtk_icon_view_accessible_model_rows_reordered, widget);
8727 }
8728
8729 static void
8730 gtk_icon_view_accessible_connect_model_signals (GtkIconView *icon_view)
8731 {
8732   GObject *obj;
8733
8734   obj = G_OBJECT (icon_view->priv->model);
8735   g_signal_connect_data (obj, "row_changed",
8736                          (GCallback) gtk_icon_view_accessible_model_row_changed,
8737                          icon_view, NULL, 0);
8738   g_signal_connect_data (obj, "row_inserted",
8739                          (GCallback) gtk_icon_view_accessible_model_row_inserted,
8740                          icon_view, NULL, G_CONNECT_AFTER);
8741   g_signal_connect_data (obj, "row_deleted",
8742                          (GCallback) gtk_icon_view_accessible_model_row_deleted,
8743                          icon_view, NULL, G_CONNECT_AFTER);
8744   g_signal_connect_data (obj, "rows_reordered",
8745                          (GCallback) gtk_icon_view_accessible_model_rows_reordered,
8746                          icon_view, NULL, G_CONNECT_AFTER);
8747 }
8748
8749 static void
8750 gtk_icon_view_accessible_clear_cache (GtkIconViewAccessiblePrivate *priv)
8751 {
8752   GtkIconViewItemAccessibleInfo *info;
8753   GList *items;
8754
8755   items = priv->items;
8756   while (items)
8757     {
8758       info = (GtkIconViewItemAccessibleInfo *) items->data;
8759       g_object_unref (info->item);
8760       g_free (items->data);
8761       items = items->next;
8762     }
8763   g_list_free (priv->items);
8764   priv->items = NULL;
8765 }
8766
8767 static void
8768 gtk_icon_view_accessible_notify_gtk (GObject *obj,
8769                                      GParamSpec *pspec)
8770 {
8771   GtkIconView *icon_view;
8772   GtkWidget *widget;
8773   AtkObject *atk_obj;
8774   GtkIconViewAccessiblePrivate *priv;
8775
8776   if (strcmp (pspec->name, "model") == 0)
8777     {
8778       widget = GTK_WIDGET (obj);
8779       atk_obj = gtk_widget_get_accessible (widget);
8780       priv = gtk_icon_view_accessible_get_priv (atk_obj);
8781       if (priv->model)
8782         {
8783           g_object_remove_weak_pointer (G_OBJECT (priv->model),
8784                                         (gpointer *)&priv->model);
8785           gtk_icon_view_accessible_disconnect_model_signals (priv->model, widget);
8786         }
8787       gtk_icon_view_accessible_clear_cache (priv);
8788
8789       icon_view = GTK_ICON_VIEW (obj);
8790       priv->model = icon_view->priv->model;
8791       /* If there is no model the GtkIconView is probably being destroyed */
8792       if (priv->model)
8793         {
8794           g_object_add_weak_pointer (G_OBJECT (priv->model), (gpointer *)&priv->model);
8795           gtk_icon_view_accessible_connect_model_signals (icon_view);
8796         }
8797     }
8798
8799   return;
8800 }
8801
8802 static void
8803 gtk_icon_view_accessible_initialize (AtkObject *accessible,
8804                                      gpointer   data)
8805 {
8806   GtkIconViewAccessiblePrivate *priv;
8807   GtkIconView *icon_view;
8808
8809   if (ATK_OBJECT_CLASS (accessible_parent_class)->initialize)
8810     ATK_OBJECT_CLASS (accessible_parent_class)->initialize (accessible, data);
8811
8812   priv = g_new0 (GtkIconViewAccessiblePrivate, 1);
8813   g_object_set_qdata (G_OBJECT (accessible),
8814                       accessible_private_data_quark,
8815                       priv);
8816
8817   icon_view = GTK_ICON_VIEW (data);
8818   if (icon_view->priv->hadjustment)
8819     {
8820       priv->old_hadj = icon_view->priv->hadjustment;
8821       g_object_add_weak_pointer (G_OBJECT (priv->old_hadj), (gpointer *)&priv->old_hadj);
8822       g_signal_connect (icon_view->priv->hadjustment,
8823                         "value-changed",
8824                         G_CALLBACK (gtk_icon_view_accessible_adjustment_changed),
8825                         icon_view);
8826     }
8827   if (icon_view->priv->vadjustment)
8828     {
8829       priv->old_vadj = icon_view->priv->vadjustment;
8830       g_object_add_weak_pointer (G_OBJECT (priv->old_vadj), (gpointer *)&priv->old_vadj);
8831       g_signal_connect (icon_view->priv->vadjustment,
8832                         "value-changed",
8833                         G_CALLBACK (gtk_icon_view_accessible_adjustment_changed),
8834                         icon_view);
8835     }
8836   g_signal_connect_after (data,
8837                           "set_scroll_adjustments",
8838                           G_CALLBACK (gtk_icon_view_accessible_set_scroll_adjustments),
8839                           NULL);
8840   g_signal_connect (data,
8841                     "notify",
8842                     G_CALLBACK (gtk_icon_view_accessible_notify_gtk),
8843                     NULL);
8844
8845   priv->model = icon_view->priv->model;
8846   if (priv->model)
8847     {
8848       g_object_add_weak_pointer (G_OBJECT (priv->model), (gpointer *)&priv->model);
8849       gtk_icon_view_accessible_connect_model_signals (icon_view);
8850     }
8851
8852   accessible->role = ATK_ROLE_LAYERED_PANE;
8853 }
8854
8855 static void
8856 gtk_icon_view_accessible_finalize (GObject *object)
8857 {
8858   GtkIconViewAccessiblePrivate *priv;
8859
8860   priv = gtk_icon_view_accessible_get_priv (ATK_OBJECT (object));
8861   gtk_icon_view_accessible_clear_cache (priv);
8862
8863   g_free (priv);
8864
8865   G_OBJECT_CLASS (accessible_parent_class)->finalize (object);
8866 }
8867
8868 static void
8869 gtk_icon_view_accessible_destroyed (GtkWidget *widget,
8870                                     GtkAccessible *accessible)
8871 {
8872   AtkObject *atk_obj;
8873   GtkIconViewAccessiblePrivate *priv;
8874
8875   atk_obj = ATK_OBJECT (accessible);
8876   priv = gtk_icon_view_accessible_get_priv (atk_obj);
8877   if (priv->old_hadj)
8878     {
8879       g_object_remove_weak_pointer (G_OBJECT (priv->old_hadj),
8880                                     (gpointer *)&priv->old_hadj);
8881
8882       g_signal_handlers_disconnect_by_func (priv->old_hadj,
8883                                             (gpointer) gtk_icon_view_accessible_adjustment_changed,
8884                                             widget);
8885       priv->old_hadj = NULL;
8886     }
8887   if (priv->old_vadj)
8888     {
8889       g_object_remove_weak_pointer (G_OBJECT (priv->old_vadj),
8890                                     (gpointer *)&priv->old_vadj);
8891
8892       g_signal_handlers_disconnect_by_func (priv->old_vadj,
8893                                             (gpointer) gtk_icon_view_accessible_adjustment_changed,
8894                                             widget);
8895       priv->old_vadj = NULL;
8896     }
8897 }
8898
8899 static void
8900 gtk_icon_view_accessible_connect_widget_destroyed (GtkAccessible *accessible)
8901 {
8902   if (accessible->widget)
8903     {
8904       g_signal_connect_after (accessible->widget,
8905                               "destroy",
8906                               G_CALLBACK (gtk_icon_view_accessible_destroyed),
8907                               accessible);
8908     }
8909   GTK_ACCESSIBLE_CLASS (accessible_parent_class)->connect_widget_destroyed (accessible);
8910 }
8911
8912 static void
8913 gtk_icon_view_accessible_class_init (AtkObjectClass *klass)
8914 {
8915   GObjectClass *gobject_class;
8916   GtkAccessibleClass *accessible_class;
8917
8918   accessible_parent_class = g_type_class_peek_parent (klass);
8919
8920   gobject_class = (GObjectClass *)klass;
8921   accessible_class = (GtkAccessibleClass *)klass;
8922
8923   gobject_class->finalize = gtk_icon_view_accessible_finalize;
8924
8925   klass->get_n_children = gtk_icon_view_accessible_get_n_children;
8926   klass->ref_child = gtk_icon_view_accessible_ref_child;
8927   klass->initialize = gtk_icon_view_accessible_initialize;
8928
8929   accessible_class->connect_widget_destroyed = gtk_icon_view_accessible_connect_widget_destroyed;
8930
8931   accessible_private_data_quark = g_quark_from_static_string ("icon_view-accessible-private-data");
8932 }
8933
8934 static AtkObject*
8935 gtk_icon_view_accessible_ref_accessible_at_point (AtkComponent *component,
8936                                                   gint          x,
8937                                                   gint          y,
8938                                                   AtkCoordType  coord_type)
8939 {
8940   GtkWidget *widget;
8941   GtkIconView *icon_view;
8942   GtkIconViewItem *item;
8943   gint x_pos, y_pos;
8944
8945   widget = GTK_ACCESSIBLE (component)->widget;
8946   if (widget == NULL)
8947   /* State is defunct */
8948     return NULL;
8949
8950   icon_view = GTK_ICON_VIEW (widget);
8951   atk_component_get_extents (component, &x_pos, &y_pos, NULL, NULL, coord_type);
8952   item = gtk_icon_view_get_item_at_coords (icon_view, x - x_pos, y - y_pos, TRUE, NULL);
8953   if (item)
8954     return gtk_icon_view_accessible_ref_child (ATK_OBJECT (component), item->index);
8955
8956   return NULL;
8957 }
8958
8959 static void
8960 atk_component_interface_init (AtkComponentIface *iface)
8961 {
8962   iface->ref_accessible_at_point = gtk_icon_view_accessible_ref_accessible_at_point;
8963 }
8964
8965 static gboolean
8966 gtk_icon_view_accessible_add_selection (AtkSelection *selection,
8967                                         gint i)
8968 {
8969   GtkWidget *widget;
8970   GtkIconView *icon_view;
8971   GtkIconViewItem *item;
8972
8973   widget = GTK_ACCESSIBLE (selection)->widget;
8974   if (widget == NULL)
8975     return FALSE;
8976
8977   icon_view = GTK_ICON_VIEW (widget);
8978
8979   item = g_list_nth_data (icon_view->priv->items, i);
8980
8981   if (!item)
8982     return FALSE;
8983
8984   gtk_icon_view_select_item (icon_view, item);
8985
8986   return TRUE;
8987 }
8988
8989 static gboolean
8990 gtk_icon_view_accessible_clear_selection (AtkSelection *selection)
8991 {
8992   GtkWidget *widget;
8993   GtkIconView *icon_view;
8994
8995   widget = GTK_ACCESSIBLE (selection)->widget;
8996   if (widget == NULL)
8997     return FALSE;
8998
8999   icon_view = GTK_ICON_VIEW (widget);
9000   gtk_icon_view_unselect_all (icon_view);
9001
9002   return TRUE;
9003 }
9004
9005 static AtkObject*
9006 gtk_icon_view_accessible_ref_selection (AtkSelection *selection,
9007                                         gint          i)
9008 {
9009   GList *l;
9010   GtkWidget *widget;
9011   GtkIconView *icon_view;
9012   GtkIconViewItem *item;
9013
9014   widget = GTK_ACCESSIBLE (selection)->widget;
9015   if (widget == NULL)
9016     return NULL;
9017
9018   icon_view = GTK_ICON_VIEW (widget);
9019
9020   l = icon_view->priv->items;
9021   while (l)
9022     {
9023       item = l->data;
9024       if (item->selected)
9025         {
9026           if (i == 0)
9027             return atk_object_ref_accessible_child (gtk_widget_get_accessible (widget), item->index);
9028           else
9029             i--;
9030         }
9031       l = l->next;
9032     }
9033
9034   return NULL;
9035 }
9036
9037 static gint
9038 gtk_icon_view_accessible_get_selection_count (AtkSelection *selection)
9039 {
9040   GtkWidget *widget;
9041   GtkIconView *icon_view;
9042   GtkIconViewItem *item;
9043   GList *l;
9044   gint count;
9045
9046   widget = GTK_ACCESSIBLE (selection)->widget;
9047   if (widget == NULL)
9048     return 0;
9049
9050   icon_view = GTK_ICON_VIEW (widget);
9051
9052   l = icon_view->priv->items;
9053   count = 0;
9054   while (l)
9055     {
9056       item = l->data;
9057
9058       if (item->selected)
9059         count++;
9060
9061       l = l->next;
9062     }
9063
9064   return count;
9065 }
9066
9067 static gboolean
9068 gtk_icon_view_accessible_is_child_selected (AtkSelection *selection,
9069                                             gint          i)
9070 {
9071   GtkWidget *widget;
9072   GtkIconView *icon_view;
9073   GtkIconViewItem *item;
9074
9075   widget = GTK_ACCESSIBLE (selection)->widget;
9076   if (widget == NULL)
9077     return FALSE;
9078
9079   icon_view = GTK_ICON_VIEW (widget);
9080
9081   item = g_list_nth_data (icon_view->priv->items, i);
9082   if (!item)
9083     return FALSE;
9084
9085   return item->selected;
9086 }
9087
9088 static gboolean
9089 gtk_icon_view_accessible_remove_selection (AtkSelection *selection,
9090                                            gint          i)
9091 {
9092   GtkWidget *widget;
9093   GtkIconView *icon_view;
9094   GtkIconViewItem *item;
9095   GList *l;
9096   gint count;
9097
9098   widget = GTK_ACCESSIBLE (selection)->widget;
9099   if (widget == NULL)
9100     return FALSE;
9101
9102   icon_view = GTK_ICON_VIEW (widget);
9103   l = icon_view->priv->items;
9104   count = 0;
9105   while (l)
9106     {
9107       item = l->data;
9108       if (item->selected)
9109         {
9110           if (count == i)
9111             {
9112               gtk_icon_view_unselect_item (icon_view, item);
9113               return TRUE;
9114             }
9115           count++;
9116         }
9117       l = l->next;
9118     }
9119
9120   return FALSE;
9121 }
9122
9123 static gboolean
9124 gtk_icon_view_accessible_select_all_selection (AtkSelection *selection)
9125 {
9126   GtkWidget *widget;
9127   GtkIconView *icon_view;
9128
9129   widget = GTK_ACCESSIBLE (selection)->widget;
9130   if (widget == NULL)
9131     return FALSE;
9132
9133   icon_view = GTK_ICON_VIEW (widget);
9134   gtk_icon_view_select_all (icon_view);
9135   return TRUE;
9136 }
9137
9138 static void
9139 gtk_icon_view_accessible_selection_interface_init (AtkSelectionIface *iface)
9140 {
9141   iface->add_selection = gtk_icon_view_accessible_add_selection;
9142   iface->clear_selection = gtk_icon_view_accessible_clear_selection;
9143   iface->ref_selection = gtk_icon_view_accessible_ref_selection;
9144   iface->get_selection_count = gtk_icon_view_accessible_get_selection_count;
9145   iface->is_child_selected = gtk_icon_view_accessible_is_child_selected;
9146   iface->remove_selection = gtk_icon_view_accessible_remove_selection;
9147   iface->select_all_selection = gtk_icon_view_accessible_select_all_selection;
9148 }
9149
9150 static GType
9151 gtk_icon_view_accessible_get_type (void)
9152 {
9153   static GType type = 0;
9154
9155   if (!type)
9156     {
9157       static GTypeInfo tinfo =
9158       {
9159         0, /* class size */
9160         (GBaseInitFunc) NULL, /* base init */
9161         (GBaseFinalizeFunc) NULL, /* base finalize */
9162         (GClassInitFunc) gtk_icon_view_accessible_class_init,
9163         (GClassFinalizeFunc) NULL, /* class finalize */
9164         NULL, /* class data */
9165         0, /* instance size */
9166         0, /* nb preallocs */
9167         (GInstanceInitFunc) NULL, /* instance init */
9168         NULL /* value table */
9169       };
9170       static const GInterfaceInfo atk_component_info =
9171       {
9172         (GInterfaceInitFunc) atk_component_interface_init,
9173         (GInterfaceFinalizeFunc) NULL,
9174         NULL
9175       };
9176       static const GInterfaceInfo atk_selection_info =
9177       {
9178         (GInterfaceInitFunc) gtk_icon_view_accessible_selection_interface_init,
9179         (GInterfaceFinalizeFunc) NULL,
9180         NULL
9181       };
9182
9183       /*
9184        * Figure out the size of the class and instance
9185        * we are deriving from
9186        */
9187       AtkObjectFactory *factory;
9188       GType derived_type;
9189       GTypeQuery query;
9190       GType derived_atk_type;
9191
9192       derived_type = g_type_parent (GTK_TYPE_ICON_VIEW);
9193       factory = atk_registry_get_factory (atk_get_default_registry (),
9194                                           derived_type);
9195       derived_atk_type = atk_object_factory_get_accessible_type (factory);
9196       g_type_query (derived_atk_type, &query);
9197       tinfo.class_size = query.class_size;
9198       tinfo.instance_size = query.instance_size;
9199
9200       type = g_type_register_static (derived_atk_type,
9201                                      I_("GtkIconViewAccessible"),
9202                                      &tinfo, 0);
9203       g_type_add_interface_static (type, ATK_TYPE_COMPONENT,
9204                                    &atk_component_info);
9205       g_type_add_interface_static (type, ATK_TYPE_SELECTION,
9206                                    &atk_selection_info);
9207     }
9208   return type;
9209 }
9210
9211 static AtkObject *
9212 gtk_icon_view_accessible_new (GObject *obj)
9213 {
9214   AtkObject *accessible;
9215
9216   g_return_val_if_fail (GTK_IS_WIDGET (obj), NULL);
9217
9218   accessible = g_object_new (gtk_icon_view_accessible_get_type (), NULL);
9219   atk_object_initialize (accessible, obj);
9220
9221   return accessible;
9222 }
9223
9224 static GType
9225 gtk_icon_view_accessible_factory_get_accessible_type (void)
9226 {
9227   return gtk_icon_view_accessible_get_type ();
9228 }
9229
9230 static AtkObject*
9231 gtk_icon_view_accessible_factory_create_accessible (GObject *obj)
9232 {
9233   return gtk_icon_view_accessible_new (obj);
9234 }
9235
9236 static void
9237 gtk_icon_view_accessible_factory_class_init (AtkObjectFactoryClass *klass)
9238 {
9239   klass->create_accessible = gtk_icon_view_accessible_factory_create_accessible;
9240   klass->get_accessible_type = gtk_icon_view_accessible_factory_get_accessible_type;
9241 }
9242
9243 static GType
9244 gtk_icon_view_accessible_factory_get_type (void)
9245 {
9246   static GType type = 0;
9247
9248   if (!type)
9249     {
9250       const GTypeInfo tinfo =
9251       {
9252         sizeof (AtkObjectFactoryClass),
9253         NULL,           /* base_init */
9254         NULL,           /* base_finalize */
9255         (GClassInitFunc) gtk_icon_view_accessible_factory_class_init,
9256         NULL,           /* class_finalize */
9257         NULL,           /* class_data */
9258         sizeof (AtkObjectFactory),
9259         0,             /* n_preallocs */
9260         NULL, NULL
9261       };
9262
9263       type = g_type_register_static (ATK_TYPE_OBJECT_FACTORY,
9264                                     I_("GtkIconViewAccessibleFactory"),
9265                                     &tinfo, 0);
9266     }
9267   return type;
9268 }
9269
9270
9271 static AtkObject *
9272 gtk_icon_view_get_accessible (GtkWidget *widget)
9273 {
9274   static gboolean first_time = TRUE;
9275
9276   if (first_time)
9277     {
9278       AtkObjectFactory *factory;
9279       AtkRegistry *registry;
9280       GType derived_type;
9281       GType derived_atk_type;
9282
9283       /*
9284        * Figure out whether accessibility is enabled by looking at the
9285        * type of the accessible object which would be created for
9286        * the parent type of GtkIconView.
9287        */
9288       derived_type = g_type_parent (GTK_TYPE_ICON_VIEW);
9289
9290       registry = atk_get_default_registry ();
9291       factory = atk_registry_get_factory (registry,
9292                                           derived_type);
9293       derived_atk_type = atk_object_factory_get_accessible_type (factory);
9294       if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
9295         atk_registry_set_factory_type (registry,
9296                                        GTK_TYPE_ICON_VIEW,
9297                                        gtk_icon_view_accessible_factory_get_type ());
9298       first_time = FALSE;
9299     }
9300   return (* GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->get_accessible) (widget);
9301 }
9302
9303 static gboolean
9304 gtk_icon_view_buildable_custom_tag_start (GtkBuildable  *buildable,
9305                                           GtkBuilder    *builder,
9306                                           GObject       *child,
9307                                           const gchar   *tagname,
9308                                           GMarkupParser *parser,
9309                                           gpointer      *data)
9310 {
9311   if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
9312                                                 tagname, parser, data))
9313     return TRUE;
9314
9315   return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
9316                                                       tagname, parser, data);
9317 }
9318
9319 static void
9320 gtk_icon_view_buildable_custom_tag_end (GtkBuildable *buildable,
9321                                         GtkBuilder   *builder,
9322                                         GObject      *child,
9323                                         const gchar  *tagname,
9324                                         gpointer     *data)
9325 {
9326   if (strcmp (tagname, "attributes") == 0)
9327     _gtk_cell_layout_buildable_custom_tag_end (buildable, builder, child, tagname,
9328                                                data);
9329   else
9330     parent_buildable_iface->custom_tag_end (buildable, builder, child, tagname,
9331                                             data);
9332 }
9333
9334
9335
9336 #define __GTK_ICON_VIEW_C__
9337 #include "gtkaliasdef.c"