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, see <http://www.gnu.org/licenses/>.
16 */
17
18 #include "config.h"
19
20 #include <string.h>
21
22 #include "gtkiconview.h"
23 #include "gtkiconviewprivate.h"
24
25 #include "gtkadjustmentprivate.h"
26 #include "gtkcelllayout.h"
27 #include "gtkcellrenderer.h"
28 #include "gtkcellareabox.h"
29 #include "gtkcellareacontext.h"
30 #include "gtkcellrenderertext.h"
31 #include "gtkcellrendererpixbuf.h"
32 #include "gtkorientable.h"
33 #include "gtkmarshalers.h"
34 #include "gtkbindings.h"
35 #include "gtkdnd.h"
36 #include "gtkmain.h"
37 #include "gtkintl.h"
38 #include "gtkaccessible.h"
39 #include "gtkwindow.h"
40 #include "gtkentry.h"
41 #include "gtkcombobox.h"
42 #include "gtkscrollable.h"
43 #include "gtksizerequest.h"
44 #include "gtktreednd.h"
45 #include "gtktypebuiltins.h"
46 #include "gtkprivate.h"
47 #include "gtkcssnodeprivate.h"
48 #include "gtkwidgetprivate.h"
49 #include "gtkstylecontextprivate.h"
50 #include "a11y/gtkiconviewaccessibleprivate.h"
51
52 /**
53 * SECTION:gtkiconview
54 * @title: GtkIconView
55 * @short_description: A widget which displays a list of icons in a grid
56 *
57 * #GtkIconView provides an alternative view on a #GtkTreeModel.
58 * It displays the model as a grid of icons with labels. Like
59 * #GtkTreeView, it allows to select one or multiple items
60 * (depending on the selection mode, see gtk_icon_view_set_selection_mode()).
61 * In addition to selection with the arrow keys, #GtkIconView supports
62 * rubberband selection, which is controlled by dragging the pointer.
63 *
64 * Note that if the tree model is backed by an actual tree store (as
65 * opposed to a flat list where the mapping to icons is obvious),
66 * #GtkIconView will only display the first level of the tree and
67 * ignore the tree’s branches.
68 *
69 * # CSS nodes
70 *
71 * |[<!-- language="plain" -->
72 * iconview.view
73 * ╰── [rubberband]
74 * ]|
75 *
76 * GtkIconView has a single CSS node with name iconview and style class .view.
77 * For rubberband selection, a subnode with name rubberband is used.
78 */
79
80 #define SCROLL_EDGE_SIZE 15
81
82 typedef struct _GtkIconViewChild GtkIconViewChild;
83 struct _GtkIconViewChild
84 {
85 GtkWidget *widget;
86 GdkRectangle area;
87 };
88
89 /* Signals */
90 enum
91 {
92 ITEM_ACTIVATED,
93 SELECTION_CHANGED,
94 SELECT_ALL,
95 UNSELECT_ALL,
96 SELECT_CURSOR_ITEM,
97 TOGGLE_CURSOR_ITEM,
98 MOVE_CURSOR,
99 ACTIVATE_CURSOR_ITEM,
100 LAST_SIGNAL
101 };
102
103 /* Properties */
104 enum
105 {
106 PROP_0,
107 PROP_PIXBUF_COLUMN,
108 PROP_TEXT_COLUMN,
109 PROP_MARKUP_COLUMN,
110 PROP_SELECTION_MODE,
111 PROP_ITEM_ORIENTATION,
112 PROP_MODEL,
113 PROP_COLUMNS,
114 PROP_ITEM_WIDTH,
115 PROP_SPACING,
116 PROP_ROW_SPACING,
117 PROP_COLUMN_SPACING,
118 PROP_MARGIN,
119 PROP_REORDERABLE,
120 PROP_TOOLTIP_COLUMN,
121 PROP_ITEM_PADDING,
122 PROP_CELL_AREA,
123 PROP_HADJUSTMENT,
124 PROP_VADJUSTMENT,
125 PROP_HSCROLL_POLICY,
126 PROP_VSCROLL_POLICY,
127 PROP_ACTIVATE_ON_SINGLE_CLICK
128 };
129
130 /* GObject vfuncs */
131 static void gtk_icon_view_cell_layout_init (GtkCellLayoutIface *iface);
132 static void gtk_icon_view_dispose (GObject *object);
133 static void gtk_icon_view_constructed (GObject *object);
134 static void gtk_icon_view_set_property (GObject *object,
135 guint prop_id,
136 const GValue *value,
137 GParamSpec *pspec);
138 static void gtk_icon_view_get_property (GObject *object,
139 guint prop_id,
140 GValue *value,
141 GParamSpec *pspec);
142 /* GtkWidget vfuncs */
143 static void gtk_icon_view_destroy (GtkWidget *widget);
144 static void gtk_icon_view_realize (GtkWidget *widget);
145 static void gtk_icon_view_unrealize (GtkWidget *widget);
146 static GtkSizeRequestMode gtk_icon_view_get_request_mode (GtkWidget *widget);
147 static void gtk_icon_view_get_preferred_width (GtkWidget *widget,
148 gint *minimum,
149 gint *natural);
150 static void gtk_icon_view_get_preferred_width_for_height
151 (GtkWidget *widget,
152 gint height,
153 gint *minimum,
154 gint *natural);
155 static void gtk_icon_view_get_preferred_height (GtkWidget *widget,
156 gint *minimum,
157 gint *natural);
158 static void gtk_icon_view_get_preferred_height_for_width
159 (GtkWidget *widget,
160 gint width,
161 gint *minimum,
162 gint *natural);
163 static void gtk_icon_view_size_allocate (GtkWidget *widget,
164 GtkAllocation *allocation);
165 static gboolean gtk_icon_view_draw (GtkWidget *widget,
166 cairo_t *cr);
167 static gboolean gtk_icon_view_motion (GtkWidget *widget,
168 GdkEventMotion *event);
169 static gboolean gtk_icon_view_leave (GtkWidget *widget,
170 GdkEventCrossing *event);
171 static gboolean gtk_icon_view_button_press (GtkWidget *widget,
172 GdkEventButton *event);
173 static gboolean gtk_icon_view_button_release (GtkWidget *widget,
174 GdkEventButton *event);
175 static gboolean gtk_icon_view_key_press (GtkWidget *widget,
176 GdkEventKey *event);
177 static gboolean gtk_icon_view_key_release (GtkWidget *widget,
178 GdkEventKey *event);
179
180
181 /* GtkContainer vfuncs */
182 static void gtk_icon_view_remove (GtkContainer *container,
183 GtkWidget *widget);
184 static void gtk_icon_view_forall (GtkContainer *container,
185 gboolean include_internals,
186 GtkCallback callback,
187 gpointer callback_data);
188
189 /* GtkIconView vfuncs */
190 static void gtk_icon_view_real_select_all (GtkIconView *icon_view);
191 static void gtk_icon_view_real_unselect_all (GtkIconView *icon_view);
192 static void gtk_icon_view_real_select_cursor_item (GtkIconView *icon_view);
193 static void gtk_icon_view_real_toggle_cursor_item (GtkIconView *icon_view);
194 static gboolean gtk_icon_view_real_activate_cursor_item (GtkIconView *icon_view);
195
196 /* Internal functions */
197 static void gtk_icon_view_set_hadjustment_values (GtkIconView *icon_view);
198 static void gtk_icon_view_set_vadjustment_values (GtkIconView *icon_view);
199 static void gtk_icon_view_set_hadjustment (GtkIconView *icon_view,
200 GtkAdjustment *adjustment);
201 static void gtk_icon_view_set_vadjustment (GtkIconView *icon_view,
202 GtkAdjustment *adjustment);
203 static void gtk_icon_view_adjustment_changed (GtkAdjustment *adjustment,
204 GtkIconView *icon_view);
205 static void gtk_icon_view_layout (GtkIconView *icon_view);
206 static void gtk_icon_view_paint_item (GtkIconView *icon_view,
207 cairo_t *cr,
208 GtkIconViewItem *item,
209 gint x,
210 gint y,
211 gboolean draw_focus);
212 static void gtk_icon_view_paint_rubberband (GtkIconView *icon_view,
213 cairo_t *cr);
214 static void gtk_icon_view_queue_draw_path (GtkIconView *icon_view,
215 GtkTreePath *path);
216 static void gtk_icon_view_queue_draw_item (GtkIconView *icon_view,
217 GtkIconViewItem *item);
218 static void gtk_icon_view_start_rubberbanding (GtkIconView *icon_view,
219 GdkDevice *device,
220 gint x,
221 gint y);
222 static void gtk_icon_view_stop_rubberbanding (GtkIconView *icon_view);
223 static void gtk_icon_view_update_rubberband_selection (GtkIconView *icon_view);
224 static gboolean gtk_icon_view_item_hit_test (GtkIconView *icon_view,
225 GtkIconViewItem *item,
226 gint x,
227 gint y,
228 gint width,
229 gint height);
230 static gboolean gtk_icon_view_unselect_all_internal (GtkIconView *icon_view);
231 static void gtk_icon_view_update_rubberband (gpointer data);
232 static void gtk_icon_view_item_invalidate_size (GtkIconViewItem *item);
233 static void gtk_icon_view_invalidate_sizes (GtkIconView *icon_view);
234 static void gtk_icon_view_add_move_binding (GtkBindingSet *binding_set,
235 guint keyval,
236 guint modmask,
237 GtkMovementStep step,
238 gint count);
239 static gboolean gtk_icon_view_real_move_cursor (GtkIconView *icon_view,
240 GtkMovementStep step,
241 gint count);
242 static void gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
243 gint count);
244 static void gtk_icon_view_move_cursor_page_up_down (GtkIconView *icon_view,
245 gint count);
246 static void gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
247 gint count);
248 static void gtk_icon_view_move_cursor_start_end (GtkIconView *icon_view,
249 gint count);
250 static void gtk_icon_view_scroll_to_item (GtkIconView *icon_view,
251 GtkIconViewItem *item);
252 static gboolean gtk_icon_view_select_all_between (GtkIconView *icon_view,
253 GtkIconViewItem *anchor,
254 GtkIconViewItem *cursor);
255
256 static void gtk_icon_view_ensure_cell_area (GtkIconView *icon_view,
257 GtkCellArea *cell_area);
258
259 static GtkCellArea *gtk_icon_view_cell_layout_get_area (GtkCellLayout *layout);
260
261 static void gtk_icon_view_item_selected_changed (GtkIconView *icon_view,
262 GtkIconViewItem *item);
263
264 static void gtk_icon_view_add_editable (GtkCellArea *area,
265 GtkCellRenderer *renderer,
266 GtkCellEditable *editable,
267 GdkRectangle *cell_area,
268 const gchar *path,
269 GtkIconView *icon_view);
270 static void gtk_icon_view_remove_editable (GtkCellArea *area,
271 GtkCellRenderer *renderer,
272 GtkCellEditable *editable,
273 GtkIconView *icon_view);
274 static void update_text_cell (GtkIconView *icon_view);
275 static void update_pixbuf_cell (GtkIconView *icon_view);
276
277 /* Source side drag signals */
278 static void gtk_icon_view_drag_begin (GtkWidget *widget,
279 GdkDragContext *context);
280 static void gtk_icon_view_drag_end (GtkWidget *widget,
281 GdkDragContext *context);
282 static void gtk_icon_view_drag_data_get (GtkWidget *widget,
283 GdkDragContext *context,
284 GtkSelectionData *selection_data,
285 guint info,
286 guint time);
287 static void gtk_icon_view_drag_data_delete (GtkWidget *widget,
288 GdkDragContext *context);
289
290 /* Target side drag signals */
291 static void gtk_icon_view_drag_leave (GtkWidget *widget,
292 GdkDragContext *context,
293 guint time);
294 static gboolean gtk_icon_view_drag_motion (GtkWidget *widget,
295 GdkDragContext *context,
296 gint x,
297 gint y,
298 guint time);
299 static gboolean gtk_icon_view_drag_drop (GtkWidget *widget,
300 GdkDragContext *context,
301 gint x,
302 gint y,
303 guint time);
304 static void gtk_icon_view_drag_data_received (GtkWidget *widget,
305 GdkDragContext *context,
306 gint x,
307 gint y,
308 GtkSelectionData *selection_data,
309 guint info,
310 guint time);
311 static gboolean gtk_icon_view_maybe_begin_drag (GtkIconView *icon_view,
312 GdkEventMotion *event);
313
314 static void remove_scroll_timeout (GtkIconView *icon_view);
315
316 /* GtkBuildable */
317 static GtkBuildableIface *parent_buildable_iface;
318 static void gtk_icon_view_buildable_init (GtkBuildableIface *iface);
319 static gboolean gtk_icon_view_buildable_custom_tag_start (GtkBuildable *buildable,
320 GtkBuilder *builder,
321 GObject *child,
322 const gchar *tagname,
323 GMarkupParser *parser,
324 gpointer *data);
325 static void gtk_icon_view_buildable_custom_tag_end (GtkBuildable *buildable,
326 GtkBuilder *builder,
327 GObject *child,
328 const gchar *tagname,
329 gpointer *data);
330
331 static guint icon_view_signals[LAST_SIGNAL] = { 0 };
332
G_DEFINE_TYPE_WITH_CODE(GtkIconView,gtk_icon_view,GTK_TYPE_CONTAINER,G_ADD_PRIVATE (GtkIconView)G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,gtk_icon_view_cell_layout_init)G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,gtk_icon_view_buildable_init)G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE,NULL))333 G_DEFINE_TYPE_WITH_CODE (GtkIconView, gtk_icon_view, GTK_TYPE_CONTAINER,
334 G_ADD_PRIVATE (GtkIconView)
335 G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
336 gtk_icon_view_cell_layout_init)
337 G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
338 gtk_icon_view_buildable_init)
339 G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
340
341 static void
342 gtk_icon_view_class_init (GtkIconViewClass *klass)
343 {
344 GObjectClass *gobject_class;
345 GtkWidgetClass *widget_class;
346 GtkContainerClass *container_class;
347 GtkBindingSet *binding_set;
348
349 binding_set = gtk_binding_set_by_class (klass);
350
351 gobject_class = (GObjectClass *) klass;
352 widget_class = (GtkWidgetClass *) klass;
353 container_class = (GtkContainerClass *) klass;
354
355 gobject_class->constructed = gtk_icon_view_constructed;
356 gobject_class->dispose = gtk_icon_view_dispose;
357 gobject_class->set_property = gtk_icon_view_set_property;
358 gobject_class->get_property = gtk_icon_view_get_property;
359
360 widget_class->destroy = gtk_icon_view_destroy;
361 widget_class->realize = gtk_icon_view_realize;
362 widget_class->unrealize = gtk_icon_view_unrealize;
363 widget_class->get_request_mode = gtk_icon_view_get_request_mode;
364 widget_class->get_preferred_width = gtk_icon_view_get_preferred_width;
365 widget_class->get_preferred_height = gtk_icon_view_get_preferred_height;
366 widget_class->get_preferred_width_for_height = gtk_icon_view_get_preferred_width_for_height;
367 widget_class->get_preferred_height_for_width = gtk_icon_view_get_preferred_height_for_width;
368 widget_class->size_allocate = gtk_icon_view_size_allocate;
369 widget_class->draw = gtk_icon_view_draw;
370 widget_class->motion_notify_event = gtk_icon_view_motion;
371 widget_class->leave_notify_event = gtk_icon_view_leave;
372 widget_class->button_press_event = gtk_icon_view_button_press;
373 widget_class->button_release_event = gtk_icon_view_button_release;
374 widget_class->key_press_event = gtk_icon_view_key_press;
375 widget_class->key_release_event = gtk_icon_view_key_release;
376 widget_class->drag_begin = gtk_icon_view_drag_begin;
377 widget_class->drag_end = gtk_icon_view_drag_end;
378 widget_class->drag_data_get = gtk_icon_view_drag_data_get;
379 widget_class->drag_data_delete = gtk_icon_view_drag_data_delete;
380 widget_class->drag_leave = gtk_icon_view_drag_leave;
381 widget_class->drag_motion = gtk_icon_view_drag_motion;
382 widget_class->drag_drop = gtk_icon_view_drag_drop;
383 widget_class->drag_data_received = gtk_icon_view_drag_data_received;
384
385 container_class->remove = gtk_icon_view_remove;
386 container_class->forall = gtk_icon_view_forall;
387
388 klass->select_all = gtk_icon_view_real_select_all;
389 klass->unselect_all = gtk_icon_view_real_unselect_all;
390 klass->select_cursor_item = gtk_icon_view_real_select_cursor_item;
391 klass->toggle_cursor_item = gtk_icon_view_real_toggle_cursor_item;
392 klass->activate_cursor_item = gtk_icon_view_real_activate_cursor_item;
393 klass->move_cursor = gtk_icon_view_real_move_cursor;
394
395 /* Properties */
396 /**
397 * GtkIconView:selection-mode:
398 *
399 * The ::selection-mode property specifies the selection mode of
400 * icon view. If the mode is #GTK_SELECTION_MULTIPLE, rubberband selection
401 * is enabled, for the other modes, only keyboard selection is possible.
402 *
403 * Since: 2.6
404 */
405 g_object_class_install_property (gobject_class,
406 PROP_SELECTION_MODE,
407 g_param_spec_enum ("selection-mode",
408 P_("Selection mode"),
409 P_("The selection mode"),
410 GTK_TYPE_SELECTION_MODE,
411 GTK_SELECTION_SINGLE,
412 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
413
414 /**
415 * GtkIconView:pixbuf-column:
416 *
417 * The ::pixbuf-column property contains the number of the model column
418 * containing the pixbufs which are displayed. The pixbuf column must be
419 * of type #GDK_TYPE_PIXBUF. Setting this property to -1 turns off the
420 * display of pixbufs.
421 *
422 * Since: 2.6
423 */
424 g_object_class_install_property (gobject_class,
425 PROP_PIXBUF_COLUMN,
426 g_param_spec_int ("pixbuf-column",
427 P_("Pixbuf column"),
428 P_("Model column used to retrieve the icon pixbuf from"),
429 -1, G_MAXINT, -1,
430 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
431
432 /**
433 * GtkIconView:text-column:
434 *
435 * The ::text-column property contains the number of the model column
436 * containing the texts which are displayed. The text column must be
437 * of type #G_TYPE_STRING. If this property and the :markup-column
438 * property are both set to -1, no texts are displayed.
439 *
440 * Since: 2.6
441 */
442 g_object_class_install_property (gobject_class,
443 PROP_TEXT_COLUMN,
444 g_param_spec_int ("text-column",
445 P_("Text column"),
446 P_("Model column used to retrieve the text from"),
447 -1, G_MAXINT, -1,
448 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
449
450
451 /**
452 * GtkIconView:markup-column:
453 *
454 * The ::markup-column property contains the number of the model column
455 * containing markup information to be displayed. The markup column must be
456 * of type #G_TYPE_STRING. If this property and the :text-column property
457 * are both set to column numbers, it overrides the text column.
458 * If both are set to -1, no texts are displayed.
459 *
460 * Since: 2.6
461 */
462 g_object_class_install_property (gobject_class,
463 PROP_MARKUP_COLUMN,
464 g_param_spec_int ("markup-column",
465 P_("Markup column"),
466 P_("Model column used to retrieve the text if using Pango markup"),
467 -1, G_MAXINT, -1,
468 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
469
470 g_object_class_install_property (gobject_class,
471 PROP_MODEL,
472 g_param_spec_object ("model",
473 P_("Icon View Model"),
474 P_("The model for the icon view"),
475 GTK_TYPE_TREE_MODEL,
476 GTK_PARAM_READWRITE));
477
478 /**
479 * GtkIconView:columns:
480 *
481 * The columns property contains the number of the columns in which the
482 * items should be displayed. If it is -1, the number of columns will
483 * be chosen automatically to fill the available area.
484 *
485 * Since: 2.6
486 */
487 g_object_class_install_property (gobject_class,
488 PROP_COLUMNS,
489 g_param_spec_int ("columns",
490 P_("Number of columns"),
491 P_("Number of columns to display"),
492 -1, G_MAXINT, -1,
493 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
494
495
496 /**
497 * GtkIconView:item-width:
498 *
499 * The item-width property specifies the width to use for each item.
500 * If it is set to -1, the icon view will automatically determine a
501 * suitable item size.
502 *
503 * Since: 2.6
504 */
505 g_object_class_install_property (gobject_class,
506 PROP_ITEM_WIDTH,
507 g_param_spec_int ("item-width",
508 P_("Width for each item"),
509 P_("The width used for each item"),
510 -1, G_MAXINT, -1,
511 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
512
513 /**
514 * GtkIconView:spacing:
515 *
516 * The spacing property specifies the space which is inserted between
517 * the cells (i.e. the icon and the text) of an item.
518 *
519 * Since: 2.6
520 */
521 g_object_class_install_property (gobject_class,
522 PROP_SPACING,
523 g_param_spec_int ("spacing",
524 P_("Spacing"),
525 P_("Space which is inserted between cells of an item"),
526 0, G_MAXINT, 0,
527 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
528
529 /**
530 * GtkIconView:row-spacing:
531 *
532 * The row-spacing property specifies the space which is inserted between
533 * the rows of the icon view.
534 *
535 * Since: 2.6
536 */
537 g_object_class_install_property (gobject_class,
538 PROP_ROW_SPACING,
539 g_param_spec_int ("row-spacing",
540 P_("Row Spacing"),
541 P_("Space which is inserted between grid rows"),
542 0, G_MAXINT, 6,
543 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
544
545 /**
546 * GtkIconView:column-spacing:
547 *
548 * The column-spacing property specifies the space which is inserted between
549 * the columns of the icon view.
550 *
551 * Since: 2.6
552 */
553 g_object_class_install_property (gobject_class,
554 PROP_COLUMN_SPACING,
555 g_param_spec_int ("column-spacing",
556 P_("Column Spacing"),
557 P_("Space which is inserted between grid columns"),
558 0, G_MAXINT, 6,
559 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
560
561 /**
562 * GtkIconView:margin:
563 *
564 * The margin property specifies the space which is inserted
565 * at the edges of the icon view.
566 *
567 * Since: 2.6
568 */
569 g_object_class_install_property (gobject_class,
570 PROP_MARGIN,
571 g_param_spec_int ("margin",
572 P_("Margin"),
573 P_("Space which is inserted at the edges of the icon view"),
574 0, G_MAXINT, 6,
575 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
576
577 /**
578 * GtkIconView:item-orientation:
579 *
580 * The item-orientation property specifies how the cells (i.e. the icon and
581 * the text) of the item are positioned relative to each other.
582 *
583 * Since: 2.6
584 */
585 g_object_class_install_property (gobject_class,
586 PROP_ITEM_ORIENTATION,
587 g_param_spec_enum ("item-orientation",
588 P_("Item Orientation"),
589 P_("How the text and icon of each item are positioned relative to each other"),
590 GTK_TYPE_ORIENTATION,
591 GTK_ORIENTATION_VERTICAL,
592 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
593
594 /**
595 * GtkIconView:reorderable:
596 *
597 * The reorderable property specifies if the items can be reordered
598 * by DND.
599 *
600 * Since: 2.8
601 */
602 g_object_class_install_property (gobject_class,
603 PROP_REORDERABLE,
604 g_param_spec_boolean ("reorderable",
605 P_("Reorderable"),
606 P_("View is reorderable"),
607 FALSE,
608 G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
609
610 g_object_class_install_property (gobject_class,
611 PROP_TOOLTIP_COLUMN,
612 g_param_spec_int ("tooltip-column",
613 P_("Tooltip Column"),
614 P_("The column in the model containing the tooltip texts for the items"),
615 -1,
616 G_MAXINT,
617 -1,
618 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
619
620 /**
621 * GtkIconView:item-padding:
622 *
623 * The item-padding property specifies the padding around each
624 * of the icon view's item.
625 *
626 * Since: 2.18
627 */
628 g_object_class_install_property (gobject_class,
629 PROP_ITEM_PADDING,
630 g_param_spec_int ("item-padding",
631 P_("Item Padding"),
632 P_("Padding around icon view items"),
633 0, G_MAXINT, 6,
634 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
635
636 /**
637 * GtkIconView:cell-area:
638 *
639 * The #GtkCellArea used to layout cell renderers for this view.
640 *
641 * If no area is specified when creating the icon view with gtk_icon_view_new_with_area()
642 * a #GtkCellAreaBox will be used.
643 *
644 * Since: 3.0
645 */
646 g_object_class_install_property (gobject_class,
647 PROP_CELL_AREA,
648 g_param_spec_object ("cell-area",
649 P_("Cell Area"),
650 P_("The GtkCellArea used to layout cells"),
651 GTK_TYPE_CELL_AREA,
652 GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
653
654 /**
655 * GtkIconView:activate-on-single-click:
656 *
657 * The activate-on-single-click property specifies whether the "item-activated" signal
658 * will be emitted after a single click.
659 *
660 * Since: 3.8
661 */
662 g_object_class_install_property (gobject_class,
663 PROP_ACTIVATE_ON_SINGLE_CLICK,
664 g_param_spec_boolean ("activate-on-single-click",
665 P_("Activate on Single Click"),
666 P_("Activate row on a single click"),
667 FALSE,
668 GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
669
670 /* Scrollable interface properties */
671 g_object_class_override_property (gobject_class, PROP_HADJUSTMENT, "hadjustment");
672 g_object_class_override_property (gobject_class, PROP_VADJUSTMENT, "vadjustment");
673 g_object_class_override_property (gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
674 g_object_class_override_property (gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
675
676 /* Style properties */
677 /**
678 * GtkIconView:selection-box-color:
679 *
680 * The color of the selection box.
681 *
682 * Deprecated: 3.20: The color of the selection box is determined by CSS;
683 * the value of this style property is ignored.
684 */
685 gtk_widget_class_install_style_property (widget_class,
686 g_param_spec_boxed ("selection-box-color",
687 P_("Selection Box Color"),
688 P_("Color of the selection box"),
689 g_type_from_name ("GdkColor"),
690 GTK_PARAM_READABLE|G_PARAM_DEPRECATED));
691
692
693 /**
694 * GtkIconView:selection-box-alpha:
695 *
696 * The opacity of the selection box.
697 *
698 * Deprecated: 3.20: The opacity of the selection box is determined by CSS;
699 * the value of this style property is ignored.
700 */
701 gtk_widget_class_install_style_property (widget_class,
702 g_param_spec_uchar ("selection-box-alpha",
703 P_("Selection Box Alpha"),
704 P_("Opacity of the selection box"),
705 0, 0xff,
706 0x40,
707 GTK_PARAM_READABLE|G_PARAM_DEPRECATED));
708
709 /* Signals */
710 /**
711 * GtkIconView::item-activated:
712 * @iconview: the object on which the signal is emitted
713 * @path: the #GtkTreePath for the activated item
714 *
715 * The ::item-activated signal is emitted when the method
716 * gtk_icon_view_item_activated() is called, when the user double
717 * clicks an item with the "activate-on-single-click" property set
718 * to %FALSE, or when the user single clicks an item when the
719 * "activate-on-single-click" property set to %TRUE. It is also
720 * emitted when a non-editable item is selected and one of the keys:
721 * Space, Return or Enter is pressed.
722 */
723 icon_view_signals[ITEM_ACTIVATED] =
724 g_signal_new (I_("item-activated"),
725 G_TYPE_FROM_CLASS (gobject_class),
726 G_SIGNAL_RUN_LAST,
727 G_STRUCT_OFFSET (GtkIconViewClass, item_activated),
728 NULL, NULL,
729 NULL,
730 G_TYPE_NONE, 1,
731 GTK_TYPE_TREE_PATH);
732
733 /**
734 * GtkIconView::selection-changed:
735 * @iconview: the object on which the signal is emitted
736 *
737 * The ::selection-changed signal is emitted when the selection
738 * (i.e. the set of selected items) changes.
739 */
740 icon_view_signals[SELECTION_CHANGED] =
741 g_signal_new (I_("selection-changed"),
742 G_TYPE_FROM_CLASS (gobject_class),
743 G_SIGNAL_RUN_FIRST,
744 G_STRUCT_OFFSET (GtkIconViewClass, selection_changed),
745 NULL, NULL,
746 NULL,
747 G_TYPE_NONE, 0);
748
749 /**
750 * GtkIconView::select-all:
751 * @iconview: the object on which the signal is emitted
752 *
753 * A [keybinding signal][GtkBindingSignal]
754 * which gets emitted when the user selects all items.
755 *
756 * Applications should not connect to it, but may emit it with
757 * g_signal_emit_by_name() if they need to control selection
758 * programmatically.
759 *
760 * The default binding for this signal is Ctrl-a.
761 */
762 icon_view_signals[SELECT_ALL] =
763 g_signal_new (I_("select-all"),
764 G_TYPE_FROM_CLASS (gobject_class),
765 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
766 G_STRUCT_OFFSET (GtkIconViewClass, select_all),
767 NULL, NULL,
768 NULL,
769 G_TYPE_NONE, 0);
770
771 /**
772 * GtkIconView::unselect-all:
773 * @iconview: the object on which the signal is emitted
774 *
775 * A [keybinding signal][GtkBindingSignal]
776 * which gets emitted when the user unselects all items.
777 *
778 * Applications should not connect to it, but may emit it with
779 * g_signal_emit_by_name() if they need to control selection
780 * programmatically.
781 *
782 * The default binding for this signal is Ctrl-Shift-a.
783 */
784 icon_view_signals[UNSELECT_ALL] =
785 g_signal_new (I_("unselect-all"),
786 G_TYPE_FROM_CLASS (gobject_class),
787 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
788 G_STRUCT_OFFSET (GtkIconViewClass, unselect_all),
789 NULL, NULL,
790 NULL,
791 G_TYPE_NONE, 0);
792
793 /**
794 * GtkIconView::select-cursor-item:
795 * @iconview: the object on which the signal is emitted
796 *
797 * A [keybinding signal][GtkBindingSignal]
798 * which gets emitted when the user selects the item that is currently
799 * focused.
800 *
801 * Applications should not connect to it, but may emit it with
802 * g_signal_emit_by_name() if they need to control selection
803 * programmatically.
804 *
805 * There is no default binding for this signal.
806 */
807 icon_view_signals[SELECT_CURSOR_ITEM] =
808 g_signal_new (I_("select-cursor-item"),
809 G_TYPE_FROM_CLASS (gobject_class),
810 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
811 G_STRUCT_OFFSET (GtkIconViewClass, select_cursor_item),
812 NULL, NULL,
813 NULL,
814 G_TYPE_NONE, 0);
815
816 /**
817 * GtkIconView::toggle-cursor-item:
818 * @iconview: the object on which the signal is emitted
819 *
820 * A [keybinding signal][GtkBindingSignal]
821 * which gets emitted when the user toggles whether the currently
822 * focused item is selected or not. The exact effect of this
823 * depend on the selection mode.
824 *
825 * Applications should not connect to it, but may emit it with
826 * g_signal_emit_by_name() if they need to control selection
827 * programmatically.
828 *
829 * There is no default binding for this signal is Ctrl-Space.
830 */
831 icon_view_signals[TOGGLE_CURSOR_ITEM] =
832 g_signal_new (I_("toggle-cursor-item"),
833 G_TYPE_FROM_CLASS (gobject_class),
834 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
835 G_STRUCT_OFFSET (GtkIconViewClass, toggle_cursor_item),
836 NULL, NULL,
837 NULL,
838 G_TYPE_NONE, 0);
839
840 /**
841 * GtkIconView::activate-cursor-item:
842 * @iconview: the object on which the signal is emitted
843 *
844 * A [keybinding signal][GtkBindingSignal]
845 * which gets emitted when the user activates the currently
846 * focused item.
847 *
848 * Applications should not connect to it, but may emit it with
849 * g_signal_emit_by_name() if they need to control activation
850 * programmatically.
851 *
852 * The default bindings for this signal are Space, Return and Enter.
853 */
854 icon_view_signals[ACTIVATE_CURSOR_ITEM] =
855 g_signal_new (I_("activate-cursor-item"),
856 G_TYPE_FROM_CLASS (gobject_class),
857 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
858 G_STRUCT_OFFSET (GtkIconViewClass, activate_cursor_item),
859 NULL, NULL,
860 _gtk_marshal_BOOLEAN__VOID,
861 G_TYPE_BOOLEAN, 0);
862 g_signal_set_va_marshaller (icon_view_signals[ACTIVATE_CURSOR_ITEM],
863 G_TYPE_FROM_CLASS (klass),
864 _gtk_marshal_BOOLEAN__VOIDv);
865
866 /**
867 * GtkIconView::move-cursor:
868 * @iconview: the object which received the signal
869 * @step: the granularity of the move, as a #GtkMovementStep
870 * @count: the number of @step units to move
871 *
872 * The ::move-cursor signal is a
873 * [keybinding signal][GtkBindingSignal]
874 * which gets emitted when the user initiates a cursor movement.
875 *
876 * Applications should not connect to it, but may emit it with
877 * g_signal_emit_by_name() if they need to control the cursor
878 * programmatically.
879 *
880 * The default bindings for this signal include
881 * - Arrow keys which move by individual steps
882 * - Home/End keys which move to the first/last item
883 * - PageUp/PageDown which move by "pages"
884 * All of these will extend the selection when combined with
885 * the Shift modifier.
886 */
887 icon_view_signals[MOVE_CURSOR] =
888 g_signal_new (I_("move-cursor"),
889 G_TYPE_FROM_CLASS (gobject_class),
890 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
891 G_STRUCT_OFFSET (GtkIconViewClass, move_cursor),
892 NULL, NULL,
893 _gtk_marshal_BOOLEAN__ENUM_INT,
894 G_TYPE_BOOLEAN, 2,
895 GTK_TYPE_MOVEMENT_STEP,
896 G_TYPE_INT);
897 g_signal_set_va_marshaller (icon_view_signals[MOVE_CURSOR],
898 G_TYPE_FROM_CLASS (klass),
899 _gtk_marshal_BOOLEAN__ENUM_INTv);
900
901 /* Key bindings */
902 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
903 "select-all", 0);
904 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
905 "unselect-all", 0);
906 gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK,
907 "toggle-cursor-item", 0);
908 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK,
909 "toggle-cursor-item", 0);
910
911 gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
912 "activate-cursor-item", 0);
913 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0,
914 "activate-cursor-item", 0);
915 gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
916 "activate-cursor-item", 0);
917 gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
918 "activate-cursor-item", 0);
919 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
920 "activate-cursor-item", 0);
921
922 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Up, 0,
923 GTK_MOVEMENT_DISPLAY_LINES, -1);
924 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
925 GTK_MOVEMENT_DISPLAY_LINES, -1);
926
927 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Down, 0,
928 GTK_MOVEMENT_DISPLAY_LINES, 1);
929 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
930 GTK_MOVEMENT_DISPLAY_LINES, 1);
931
932 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK,
933 GTK_MOVEMENT_DISPLAY_LINES, -1);
934
935 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK,
936 GTK_MOVEMENT_DISPLAY_LINES, 1);
937
938 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Home, 0,
939 GTK_MOVEMENT_BUFFER_ENDS, -1);
940 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
941 GTK_MOVEMENT_BUFFER_ENDS, -1);
942
943 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_End, 0,
944 GTK_MOVEMENT_BUFFER_ENDS, 1);
945 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0,
946 GTK_MOVEMENT_BUFFER_ENDS, 1);
947
948 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0,
949 GTK_MOVEMENT_PAGES, -1);
950 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0,
951 GTK_MOVEMENT_PAGES, -1);
952
953 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0,
954 GTK_MOVEMENT_PAGES, 1);
955 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0,
956 GTK_MOVEMENT_PAGES, 1);
957
958 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Right, 0,
959 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
960 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Left, 0,
961 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
962
963 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
964 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
965 gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
966 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
967
968 gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ICON_VIEW_ACCESSIBLE);
969 gtk_widget_class_set_css_name (widget_class, "iconview");
970 }
971
972 static void
gtk_icon_view_buildable_init(GtkBuildableIface * iface)973 gtk_icon_view_buildable_init (GtkBuildableIface *iface)
974 {
975 parent_buildable_iface = g_type_interface_peek_parent (iface);
976 iface->add_child = _gtk_cell_layout_buildable_add_child;
977 iface->custom_tag_start = gtk_icon_view_buildable_custom_tag_start;
978 iface->custom_tag_end = gtk_icon_view_buildable_custom_tag_end;
979 }
980
981 static void
gtk_icon_view_cell_layout_init(GtkCellLayoutIface * iface)982 gtk_icon_view_cell_layout_init (GtkCellLayoutIface *iface)
983 {
984 iface->get_area = gtk_icon_view_cell_layout_get_area;
985 }
986
987 static void
gtk_icon_view_init(GtkIconView * icon_view)988 gtk_icon_view_init (GtkIconView *icon_view)
989 {
990 icon_view->priv = gtk_icon_view_get_instance_private (icon_view);
991
992 icon_view->priv->width = 0;
993 icon_view->priv->height = 0;
994 icon_view->priv->selection_mode = GTK_SELECTION_SINGLE;
995 icon_view->priv->pressed_button = -1;
996 icon_view->priv->press_start_x = -1;
997 icon_view->priv->press_start_y = -1;
998 icon_view->priv->text_column = -1;
999 icon_view->priv->markup_column = -1;
1000 icon_view->priv->pixbuf_column = -1;
1001 icon_view->priv->text_cell = NULL;
1002 icon_view->priv->pixbuf_cell = NULL;
1003 icon_view->priv->tooltip_column = -1;
1004
1005 gtk_widget_set_can_focus (GTK_WIDGET (icon_view), TRUE);
1006
1007 icon_view->priv->item_orientation = GTK_ORIENTATION_VERTICAL;
1008
1009 icon_view->priv->columns = -1;
1010 icon_view->priv->item_width = -1;
1011 icon_view->priv->spacing = 0;
1012 icon_view->priv->row_spacing = 6;
1013 icon_view->priv->column_spacing = 6;
1014 icon_view->priv->margin = 6;
1015 icon_view->priv->item_padding = 6;
1016 icon_view->priv->activate_on_single_click = FALSE;
1017
1018 icon_view->priv->draw_focus = TRUE;
1019
1020 icon_view->priv->row_contexts =
1021 g_ptr_array_new_with_free_func ((GDestroyNotify)g_object_unref);
1022
1023 gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (icon_view)),
1024 GTK_STYLE_CLASS_VIEW);
1025 }
1026
1027 /* GObject methods */
1028
1029 static void
gtk_icon_view_constructed(GObject * object)1030 gtk_icon_view_constructed (GObject *object)
1031 {
1032 GtkIconView *icon_view = GTK_ICON_VIEW (object);
1033
1034 G_OBJECT_CLASS (gtk_icon_view_parent_class)->constructed (object);
1035
1036 gtk_icon_view_ensure_cell_area (icon_view, NULL);
1037 }
1038
1039 static void
gtk_icon_view_dispose(GObject * object)1040 gtk_icon_view_dispose (GObject *object)
1041 {
1042 GtkIconView *icon_view;
1043 GtkIconViewPrivate *priv;
1044
1045 icon_view = GTK_ICON_VIEW (object);
1046 priv = icon_view->priv;
1047
1048 if (priv->cell_area_context)
1049 {
1050 g_object_unref (priv->cell_area_context);
1051 priv->cell_area_context = NULL;
1052 }
1053
1054 if (priv->row_contexts)
1055 {
1056 g_ptr_array_free (priv->row_contexts, TRUE);
1057 priv->row_contexts = NULL;
1058 }
1059
1060 if (priv->cell_area)
1061 {
1062 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
1063
1064 g_signal_handler_disconnect (priv->cell_area, priv->add_editable_id);
1065 g_signal_handler_disconnect (priv->cell_area, priv->remove_editable_id);
1066 priv->add_editable_id = 0;
1067 priv->remove_editable_id = 0;
1068
1069 g_object_unref (priv->cell_area);
1070 priv->cell_area = NULL;
1071 }
1072
1073 G_OBJECT_CLASS (gtk_icon_view_parent_class)->dispose (object);
1074 }
1075
1076 static void
gtk_icon_view_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)1077 gtk_icon_view_set_property (GObject *object,
1078 guint prop_id,
1079 const GValue *value,
1080 GParamSpec *pspec)
1081 {
1082 GtkIconView *icon_view;
1083 GtkCellArea *area;
1084
1085 icon_view = GTK_ICON_VIEW (object);
1086
1087 switch (prop_id)
1088 {
1089 case PROP_SELECTION_MODE:
1090 gtk_icon_view_set_selection_mode (icon_view, g_value_get_enum (value));
1091 break;
1092 case PROP_PIXBUF_COLUMN:
1093 gtk_icon_view_set_pixbuf_column (icon_view, g_value_get_int (value));
1094 break;
1095 case PROP_TEXT_COLUMN:
1096 gtk_icon_view_set_text_column (icon_view, g_value_get_int (value));
1097 break;
1098 case PROP_MARKUP_COLUMN:
1099 gtk_icon_view_set_markup_column (icon_view, g_value_get_int (value));
1100 break;
1101 case PROP_MODEL:
1102 gtk_icon_view_set_model (icon_view, g_value_get_object (value));
1103 break;
1104 case PROP_ITEM_ORIENTATION:
1105 gtk_icon_view_set_item_orientation (icon_view, g_value_get_enum (value));
1106 break;
1107 case PROP_COLUMNS:
1108 gtk_icon_view_set_columns (icon_view, g_value_get_int (value));
1109 break;
1110 case PROP_ITEM_WIDTH:
1111 gtk_icon_view_set_item_width (icon_view, g_value_get_int (value));
1112 break;
1113 case PROP_SPACING:
1114 gtk_icon_view_set_spacing (icon_view, g_value_get_int (value));
1115 break;
1116 case PROP_ROW_SPACING:
1117 gtk_icon_view_set_row_spacing (icon_view, g_value_get_int (value));
1118 break;
1119 case PROP_COLUMN_SPACING:
1120 gtk_icon_view_set_column_spacing (icon_view, g_value_get_int (value));
1121 break;
1122 case PROP_MARGIN:
1123 gtk_icon_view_set_margin (icon_view, g_value_get_int (value));
1124 break;
1125 case PROP_REORDERABLE:
1126 gtk_icon_view_set_reorderable (icon_view, g_value_get_boolean (value));
1127 break;
1128
1129 case PROP_TOOLTIP_COLUMN:
1130 gtk_icon_view_set_tooltip_column (icon_view, g_value_get_int (value));
1131 break;
1132
1133 case PROP_ITEM_PADDING:
1134 gtk_icon_view_set_item_padding (icon_view, g_value_get_int (value));
1135 break;
1136
1137 case PROP_ACTIVATE_ON_SINGLE_CLICK:
1138 gtk_icon_view_set_activate_on_single_click (icon_view, g_value_get_boolean (value));
1139 break;
1140
1141 case PROP_CELL_AREA:
1142 /* Construct-only, can only be assigned once */
1143 area = g_value_get_object (value);
1144 if (area)
1145 {
1146 if (icon_view->priv->cell_area != NULL)
1147 {
1148 g_warning ("cell-area has already been set, ignoring construct property");
1149 g_object_ref_sink (area);
1150 g_object_unref (area);
1151 }
1152 else
1153 gtk_icon_view_ensure_cell_area (icon_view, area);
1154 }
1155 break;
1156
1157 case PROP_HADJUSTMENT:
1158 gtk_icon_view_set_hadjustment (icon_view, g_value_get_object (value));
1159 break;
1160 case PROP_VADJUSTMENT:
1161 gtk_icon_view_set_vadjustment (icon_view, g_value_get_object (value));
1162 break;
1163 case PROP_HSCROLL_POLICY:
1164 if (icon_view->priv->hscroll_policy != g_value_get_enum (value))
1165 {
1166 icon_view->priv->hscroll_policy = g_value_get_enum (value);
1167 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
1168 g_object_notify_by_pspec (object, pspec);
1169 }
1170 break;
1171 case PROP_VSCROLL_POLICY:
1172 if (icon_view->priv->vscroll_policy != g_value_get_enum (value))
1173 {
1174 icon_view->priv->vscroll_policy = g_value_get_enum (value);
1175 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
1176 g_object_notify_by_pspec (object, pspec);
1177 }
1178 break;
1179
1180 default:
1181 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1182 break;
1183 }
1184 }
1185
1186 static void
gtk_icon_view_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)1187 gtk_icon_view_get_property (GObject *object,
1188 guint prop_id,
1189 GValue *value,
1190 GParamSpec *pspec)
1191 {
1192 GtkIconView *icon_view;
1193
1194 icon_view = GTK_ICON_VIEW (object);
1195
1196 switch (prop_id)
1197 {
1198 case PROP_SELECTION_MODE:
1199 g_value_set_enum (value, icon_view->priv->selection_mode);
1200 break;
1201 case PROP_PIXBUF_COLUMN:
1202 g_value_set_int (value, icon_view->priv->pixbuf_column);
1203 break;
1204 case PROP_TEXT_COLUMN:
1205 g_value_set_int (value, icon_view->priv->text_column);
1206 break;
1207 case PROP_MARKUP_COLUMN:
1208 g_value_set_int (value, icon_view->priv->markup_column);
1209 break;
1210 case PROP_MODEL:
1211 g_value_set_object (value, icon_view->priv->model);
1212 break;
1213 case PROP_ITEM_ORIENTATION:
1214 g_value_set_enum (value, icon_view->priv->item_orientation);
1215 break;
1216 case PROP_COLUMNS:
1217 g_value_set_int (value, icon_view->priv->columns);
1218 break;
1219 case PROP_ITEM_WIDTH:
1220 g_value_set_int (value, icon_view->priv->item_width);
1221 break;
1222 case PROP_SPACING:
1223 g_value_set_int (value, icon_view->priv->spacing);
1224 break;
1225 case PROP_ROW_SPACING:
1226 g_value_set_int (value, icon_view->priv->row_spacing);
1227 break;
1228 case PROP_COLUMN_SPACING:
1229 g_value_set_int (value, icon_view->priv->column_spacing);
1230 break;
1231 case PROP_MARGIN:
1232 g_value_set_int (value, icon_view->priv->margin);
1233 break;
1234 case PROP_REORDERABLE:
1235 g_value_set_boolean (value, icon_view->priv->reorderable);
1236 break;
1237 case PROP_TOOLTIP_COLUMN:
1238 g_value_set_int (value, icon_view->priv->tooltip_column);
1239 break;
1240
1241 case PROP_ITEM_PADDING:
1242 g_value_set_int (value, icon_view->priv->item_padding);
1243 break;
1244
1245 case PROP_ACTIVATE_ON_SINGLE_CLICK:
1246 g_value_set_boolean (value, icon_view->priv->activate_on_single_click);
1247 break;
1248
1249 case PROP_CELL_AREA:
1250 g_value_set_object (value, icon_view->priv->cell_area);
1251 break;
1252
1253 case PROP_HADJUSTMENT:
1254 g_value_set_object (value, icon_view->priv->hadjustment);
1255 break;
1256 case PROP_VADJUSTMENT:
1257 g_value_set_object (value, icon_view->priv->vadjustment);
1258 break;
1259 case PROP_HSCROLL_POLICY:
1260 g_value_set_enum (value, icon_view->priv->hscroll_policy);
1261 break;
1262 case PROP_VSCROLL_POLICY:
1263 g_value_set_enum (value, icon_view->priv->vscroll_policy);
1264 break;
1265
1266 default:
1267 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1268 break;
1269 }
1270 }
1271
1272 /* GtkWidget methods */
1273 static void
gtk_icon_view_destroy(GtkWidget * widget)1274 gtk_icon_view_destroy (GtkWidget *widget)
1275 {
1276 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1277
1278 gtk_icon_view_set_model (icon_view, NULL);
1279
1280 if (icon_view->priv->scroll_to_path != NULL)
1281 {
1282 gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
1283 icon_view->priv->scroll_to_path = NULL;
1284 }
1285
1286 remove_scroll_timeout (icon_view);
1287
1288 if (icon_view->priv->hadjustment != NULL)
1289 {
1290 g_object_unref (icon_view->priv->hadjustment);
1291 icon_view->priv->hadjustment = NULL;
1292 }
1293
1294 if (icon_view->priv->vadjustment != NULL)
1295 {
1296 g_object_unref (icon_view->priv->vadjustment);
1297 icon_view->priv->vadjustment = NULL;
1298 }
1299
1300 GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->destroy (widget);
1301 }
1302
1303 static void
gtk_icon_view_realize(GtkWidget * widget)1304 gtk_icon_view_realize (GtkWidget *widget)
1305 {
1306 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1307 GtkAllocation allocation;
1308 GdkWindow *window;
1309 GdkWindowAttr attributes;
1310 gint attributes_mask;
1311
1312 gtk_widget_set_realized (widget, TRUE);
1313
1314 gtk_widget_get_allocation (widget, &allocation);
1315
1316 /* Make the main, clipping window */
1317 attributes.window_type = GDK_WINDOW_CHILD;
1318 attributes.x = allocation.x;
1319 attributes.y = allocation.y;
1320 attributes.width = allocation.width;
1321 attributes.height = allocation.height;
1322 attributes.wclass = GDK_INPUT_OUTPUT;
1323 attributes.visual = gtk_widget_get_visual (widget);
1324 attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1325
1326 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
1327
1328 window = gdk_window_new (gtk_widget_get_parent_window (widget),
1329 &attributes, attributes_mask);
1330 gtk_widget_set_window (widget, window);
1331 gtk_widget_register_window (widget, window);
1332
1333 gtk_widget_get_allocation (widget, &allocation);
1334
1335 /* Make the window for the icon view */
1336 attributes.x = 0;
1337 attributes.y = 0;
1338 attributes.width = MAX (icon_view->priv->width, allocation.width);
1339 attributes.height = MAX (icon_view->priv->height, allocation.height);
1340 attributes.event_mask = (GDK_SCROLL_MASK |
1341 GDK_SMOOTH_SCROLL_MASK |
1342 GDK_POINTER_MOTION_MASK |
1343 GDK_LEAVE_NOTIFY_MASK |
1344 GDK_BUTTON_PRESS_MASK |
1345 GDK_BUTTON_RELEASE_MASK |
1346 GDK_KEY_PRESS_MASK |
1347 GDK_KEY_RELEASE_MASK) |
1348 gtk_widget_get_events (widget);
1349
1350 icon_view->priv->bin_window = gdk_window_new (window,
1351 &attributes, attributes_mask);
1352 gtk_widget_register_window (widget, icon_view->priv->bin_window);
1353 gdk_window_show (icon_view->priv->bin_window);
1354 }
1355
1356 static void
gtk_icon_view_unrealize(GtkWidget * widget)1357 gtk_icon_view_unrealize (GtkWidget *widget)
1358 {
1359 GtkIconView *icon_view;
1360
1361 icon_view = GTK_ICON_VIEW (widget);
1362
1363 gtk_widget_unregister_window (widget, icon_view->priv->bin_window);
1364 gdk_window_destroy (icon_view->priv->bin_window);
1365 icon_view->priv->bin_window = NULL;
1366
1367 GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->unrealize (widget);
1368 }
1369
1370 static gint
gtk_icon_view_get_n_items(GtkIconView * icon_view)1371 gtk_icon_view_get_n_items (GtkIconView *icon_view)
1372 {
1373 GtkIconViewPrivate *priv = icon_view->priv;
1374
1375 if (priv->model == NULL)
1376 return 0;
1377
1378 return gtk_tree_model_iter_n_children (priv->model, NULL);
1379 }
1380
1381 static void
adjust_wrap_width(GtkIconView * icon_view)1382 adjust_wrap_width (GtkIconView *icon_view)
1383 {
1384 if (icon_view->priv->text_cell)
1385 {
1386 gint pixbuf_width, wrap_width;
1387
1388 if (icon_view->priv->items && icon_view->priv->pixbuf_cell)
1389 {
1390 gtk_cell_renderer_get_preferred_width (icon_view->priv->pixbuf_cell,
1391 GTK_WIDGET (icon_view),
1392 &pixbuf_width, NULL);
1393 }
1394 else
1395 {
1396 pixbuf_width = 0;
1397 }
1398
1399 if (icon_view->priv->item_width >= 0)
1400 {
1401 if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
1402 {
1403 wrap_width = icon_view->priv->item_width;
1404 }
1405 else
1406 {
1407 wrap_width = icon_view->priv->item_width - pixbuf_width;
1408 }
1409
1410 wrap_width -= 2 * icon_view->priv->item_padding * 2;
1411 }
1412 else
1413 {
1414 wrap_width = MAX (pixbuf_width * 2, 50);
1415 }
1416
1417 if (icon_view->priv->items && icon_view->priv->pixbuf_cell)
1418 {
1419 /* Here we go with the same old guess, try the icon size and set double
1420 * the size of the first icon found in the list, naive but works much
1421 * of the time */
1422
1423 wrap_width = MAX (wrap_width * 2, 50);
1424 }
1425
1426 g_object_set (icon_view->priv->text_cell, "wrap-width", wrap_width, NULL);
1427 g_object_set (icon_view->priv->text_cell, "width", wrap_width, NULL);
1428 }
1429 }
1430
1431 /* General notes about layout
1432 *
1433 * The icon view is layouted like this:
1434 *
1435 * +----------+ s +----------+
1436 * | padding | p | padding |
1437 * | +------+ | a | +------+ |
1438 * | | cell | | c | | cell | |
1439 * | +------+ | i | +------+ |
1440 * | | n | |
1441 * +----------+ g +----------+
1442 *
1443 * In size request and allocation code, there are 3 sizes that are used:
1444 * * cell size
1445 * This is the size returned by gtk_cell_area_get_preferred_foo(). In places
1446 * where code is interacting with the cell area and renderers this is useful.
1447 * * padded size
1448 * This is the cell size plus the item padding on each side.
1449 * * spaced size
1450 * This is the padded size plus the spacing. This is what’s used for most
1451 * calculations because it can (ab)use the following formula:
1452 * iconview_size = 2 * margin + n_items * spaced_size - spacing
1453 * So when reading this code and fixing my bugs where I confuse these two, be
1454 * aware of this distinction.
1455 */
1456 static void
cell_area_get_preferred_size(GtkIconView * icon_view,GtkCellAreaContext * context,GtkOrientation orientation,gint for_size,gint * minimum,gint * natural)1457 cell_area_get_preferred_size (GtkIconView *icon_view,
1458 GtkCellAreaContext *context,
1459 GtkOrientation orientation,
1460 gint for_size,
1461 gint *minimum,
1462 gint *natural)
1463 {
1464 if (orientation == GTK_ORIENTATION_HORIZONTAL)
1465 {
1466 if (for_size > 0)
1467 gtk_cell_area_get_preferred_width_for_height (icon_view->priv->cell_area,
1468 context,
1469 GTK_WIDGET (icon_view),
1470 for_size,
1471 minimum, natural);
1472 else
1473 gtk_cell_area_get_preferred_width (icon_view->priv->cell_area,
1474 context,
1475 GTK_WIDGET (icon_view),
1476 minimum, natural);
1477 }
1478 else
1479 {
1480 if (for_size > 0)
1481 gtk_cell_area_get_preferred_height_for_width (icon_view->priv->cell_area,
1482 context,
1483 GTK_WIDGET (icon_view),
1484 for_size,
1485 minimum, natural);
1486 else
1487 gtk_cell_area_get_preferred_height (icon_view->priv->cell_area,
1488 context,
1489 GTK_WIDGET (icon_view),
1490 minimum, natural);
1491 }
1492 }
1493
1494 static gboolean
gtk_icon_view_is_empty(GtkIconView * icon_view)1495 gtk_icon_view_is_empty (GtkIconView *icon_view)
1496 {
1497 return icon_view->priv->items == NULL;
1498 }
1499
1500 static void
gtk_icon_view_get_preferred_item_size(GtkIconView * icon_view,GtkOrientation orientation,gint for_size,gint * minimum,gint * natural)1501 gtk_icon_view_get_preferred_item_size (GtkIconView *icon_view,
1502 GtkOrientation orientation,
1503 gint for_size,
1504 gint *minimum,
1505 gint *natural)
1506 {
1507 GtkIconViewPrivate *priv = icon_view->priv;
1508 GtkCellAreaContext *context;
1509 GList *items;
1510
1511 g_assert (!gtk_icon_view_is_empty (icon_view));
1512
1513 context = gtk_cell_area_create_context (priv->cell_area);
1514
1515 for_size -= 2 * priv->item_padding;
1516
1517 if (for_size > 0)
1518 {
1519 /* This is necessary for the context to work properly */
1520 for (items = priv->items; items; items = items->next)
1521 {
1522 GtkIconViewItem *item = items->data;
1523
1524 _gtk_icon_view_set_cell_data (icon_view, item);
1525 cell_area_get_preferred_size (icon_view, context, 1 - orientation, -1, NULL, NULL);
1526 }
1527 }
1528
1529 for (items = priv->items; items; items = items->next)
1530 {
1531 GtkIconViewItem *item = items->data;
1532
1533 _gtk_icon_view_set_cell_data (icon_view, item);
1534 if (items == priv->items)
1535 adjust_wrap_width (icon_view);
1536 cell_area_get_preferred_size (icon_view, context, orientation, for_size, NULL, NULL);
1537 }
1538
1539 if (orientation == GTK_ORIENTATION_HORIZONTAL)
1540 {
1541 if (for_size > 0)
1542 gtk_cell_area_context_get_preferred_width_for_height (context,
1543 for_size,
1544 minimum, natural);
1545 else
1546 gtk_cell_area_context_get_preferred_width (context,
1547 minimum, natural);
1548 }
1549 else
1550 {
1551 if (for_size > 0)
1552 gtk_cell_area_context_get_preferred_height_for_width (context,
1553 for_size,
1554 minimum, natural);
1555 else
1556 gtk_cell_area_context_get_preferred_height (context,
1557 minimum, natural);
1558 }
1559
1560 if (orientation == GTK_ORIENTATION_HORIZONTAL && priv->item_width >= 0)
1561 {
1562 if (minimum)
1563 *minimum = MAX (*minimum, priv->item_width);
1564 if (natural)
1565 *natural = *minimum;
1566 }
1567
1568 if (minimum)
1569 *minimum = MAX (1, *minimum + 2 * priv->item_padding);
1570 if (natural)
1571 *natural = MAX (1, *natural + 2 * priv->item_padding);
1572
1573 g_object_unref (context);
1574 }
1575
1576 static void
gtk_icon_view_compute_n_items_for_size(GtkIconView * icon_view,GtkOrientation orientation,gint size,gint * min_items,gint * min_item_size,gint * max_items,gint * max_item_size)1577 gtk_icon_view_compute_n_items_for_size (GtkIconView *icon_view,
1578 GtkOrientation orientation,
1579 gint size,
1580 gint *min_items,
1581 gint *min_item_size,
1582 gint *max_items,
1583 gint *max_item_size)
1584 {
1585 GtkIconViewPrivate *priv = icon_view->priv;
1586 int minimum, natural, spacing;
1587
1588 g_return_if_fail (min_item_size == NULL || min_items != NULL);
1589 g_return_if_fail (max_item_size == NULL || max_items != NULL);
1590 g_return_if_fail (!gtk_icon_view_is_empty (icon_view));
1591
1592 gtk_icon_view_get_preferred_item_size (icon_view, orientation, -1, &minimum, &natural);
1593
1594 if (orientation == GTK_ORIENTATION_HORIZONTAL)
1595 spacing = priv->column_spacing;
1596 else
1597 spacing = priv->row_spacing;
1598
1599 size -= 2 * priv->margin;
1600 size += spacing;
1601 minimum += spacing;
1602 natural += spacing;
1603
1604 if (priv->columns > 0)
1605 {
1606 if (orientation == GTK_ORIENTATION_HORIZONTAL)
1607 {
1608 if (min_items)
1609 *min_items = priv->columns;
1610 if (max_items)
1611 *max_items = priv->columns;
1612 }
1613 else
1614 {
1615 int n_items = gtk_icon_view_get_n_items (icon_view);
1616
1617 if (min_items)
1618 *min_items = (n_items + priv->columns - 1) / priv->columns;
1619 if (max_items)
1620 *max_items = (n_items + priv->columns - 1) / priv->columns;
1621 }
1622 }
1623 else
1624 {
1625 if (max_items)
1626 {
1627 if (size <= minimum)
1628 *max_items = 1;
1629 else
1630 *max_items = size / minimum;
1631 }
1632
1633 if (min_items)
1634 {
1635 if (size <= natural)
1636 *min_items = 1;
1637 else
1638 *min_items = size / natural;
1639 }
1640 }
1641
1642 if (min_item_size)
1643 {
1644 *min_item_size = size / *min_items;
1645 *min_item_size = CLAMP (*min_item_size, minimum, natural);
1646 *min_item_size -= spacing;
1647 *min_item_size -= 2 * priv->item_padding;
1648 }
1649
1650 if (max_item_size)
1651 {
1652 *max_item_size = size / *max_items;
1653 *max_item_size = CLAMP (*max_item_size, minimum, natural);
1654 *max_item_size -= spacing;
1655 *max_item_size -= 2 * priv->item_padding;
1656 }
1657 }
1658
1659 static GtkSizeRequestMode
gtk_icon_view_get_request_mode(GtkWidget * widget)1660 gtk_icon_view_get_request_mode (GtkWidget *widget)
1661 {
1662 return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
1663 }
1664
1665 static void
gtk_icon_view_get_preferred_width(GtkWidget * widget,gint * minimum,gint * natural)1666 gtk_icon_view_get_preferred_width (GtkWidget *widget,
1667 gint *minimum,
1668 gint *natural)
1669 {
1670 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1671 GtkIconViewPrivate *priv = icon_view->priv;
1672 int item_min, item_nat;
1673
1674 if (gtk_icon_view_is_empty (icon_view))
1675 {
1676 *minimum = *natural = 2 * priv->margin;
1677 return;
1678 }
1679
1680 gtk_icon_view_get_preferred_item_size (icon_view, GTK_ORIENTATION_HORIZONTAL, -1, &item_min, &item_nat);
1681
1682 if (priv->columns > 0)
1683 {
1684 *minimum = item_min * priv->columns + priv->column_spacing * (priv->columns - 1);
1685 *natural = item_nat * priv->columns + priv->column_spacing * (priv->columns - 1);
1686 }
1687 else
1688 {
1689 int n_items = gtk_icon_view_get_n_items (icon_view);
1690
1691 *minimum = item_min;
1692 *natural = item_nat * n_items + priv->column_spacing * (n_items - 1);
1693 }
1694
1695 *minimum += 2 * priv->margin;
1696 *natural += 2 * priv->margin;
1697 }
1698
1699 static void
gtk_icon_view_get_preferred_width_for_height(GtkWidget * widget,gint height,gint * minimum,gint * natural)1700 gtk_icon_view_get_preferred_width_for_height (GtkWidget *widget,
1701 gint height,
1702 gint *minimum,
1703 gint *natural)
1704 {
1705 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1706 GtkIconViewPrivate *priv = icon_view->priv;
1707 int item_min, item_nat, rows, row_height, n_items;
1708
1709 if (gtk_icon_view_is_empty (icon_view))
1710 {
1711 *minimum = *natural = 2 * priv->margin;
1712 return;
1713 }
1714
1715 gtk_icon_view_compute_n_items_for_size (icon_view, GTK_ORIENTATION_VERTICAL, height, &rows, &row_height, NULL, NULL);
1716 n_items = gtk_icon_view_get_n_items (icon_view);
1717
1718 gtk_icon_view_get_preferred_item_size (icon_view, GTK_ORIENTATION_HORIZONTAL, row_height, &item_min, &item_nat);
1719 *minimum = (item_min + priv->column_spacing) * ((n_items + rows - 1) / rows) - priv->column_spacing;
1720 *natural = (item_nat + priv->column_spacing) * ((n_items + rows - 1) / rows) - priv->column_spacing;
1721
1722 *minimum += 2 * priv->margin;
1723 *natural += 2 * priv->margin;
1724 }
1725
1726 static void
gtk_icon_view_get_preferred_height(GtkWidget * widget,gint * minimum,gint * natural)1727 gtk_icon_view_get_preferred_height (GtkWidget *widget,
1728 gint *minimum,
1729 gint *natural)
1730 {
1731 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1732 GtkIconViewPrivate *priv = icon_view->priv;
1733 int item_min, item_nat, n_items;
1734
1735 if (gtk_icon_view_is_empty (icon_view))
1736 {
1737 *minimum = *natural = 2 * priv->margin;
1738 return;
1739 }
1740
1741 gtk_icon_view_get_preferred_item_size (icon_view, GTK_ORIENTATION_VERTICAL, -1, &item_min, &item_nat);
1742 n_items = gtk_icon_view_get_n_items (icon_view);
1743
1744 if (priv->columns > 0)
1745 {
1746 int n_rows = (n_items + priv->columns - 1) / priv->columns;
1747
1748 *minimum = item_min * n_rows + priv->row_spacing * (n_rows - 1);
1749 *natural = item_nat * n_rows + priv->row_spacing * (n_rows - 1);
1750 }
1751 else
1752 {
1753 *minimum = item_min;
1754 *natural = item_nat * n_items + priv->row_spacing * (n_items - 1);
1755 }
1756
1757 *minimum += 2 * priv->margin;
1758 *natural += 2 * priv->margin;
1759 }
1760
1761 static void
gtk_icon_view_get_preferred_height_for_width(GtkWidget * widget,gint width,gint * minimum,gint * natural)1762 gtk_icon_view_get_preferred_height_for_width (GtkWidget *widget,
1763 gint width,
1764 gint *minimum,
1765 gint *natural)
1766 {
1767 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1768 GtkIconViewPrivate *priv = icon_view->priv;
1769 int item_min, item_nat, columns, column_width, n_items;
1770
1771 if (gtk_icon_view_is_empty (icon_view))
1772 {
1773 *minimum = *natural = 2 * priv->margin;
1774 return;
1775 }
1776
1777 gtk_icon_view_compute_n_items_for_size (icon_view, GTK_ORIENTATION_HORIZONTAL, width, NULL, NULL, &columns, &column_width);
1778 n_items = gtk_icon_view_get_n_items (icon_view);
1779
1780 gtk_icon_view_get_preferred_item_size (icon_view, GTK_ORIENTATION_VERTICAL, column_width, &item_min, &item_nat);
1781 *minimum = (item_min + priv->row_spacing) * ((n_items + columns - 1) / columns) - priv->row_spacing;
1782 *natural = (item_nat + priv->row_spacing) * ((n_items + columns - 1) / columns) - priv->row_spacing;
1783
1784 *minimum += 2 * priv->margin;
1785 *natural += 2 * priv->margin;
1786 }
1787
1788 static void
gtk_icon_view_allocate_children(GtkIconView * icon_view)1789 gtk_icon_view_allocate_children (GtkIconView *icon_view)
1790 {
1791 GList *list;
1792
1793 for (list = icon_view->priv->children; list; list = list->next)
1794 {
1795 GtkIconViewChild *child = list->data;
1796
1797 /* totally ignore our child's requisition */
1798 gtk_widget_size_allocate (child->widget, &child->area);
1799 }
1800 }
1801
1802 static void
gtk_icon_view_size_allocate(GtkWidget * widget,GtkAllocation * allocation)1803 gtk_icon_view_size_allocate (GtkWidget *widget,
1804 GtkAllocation *allocation)
1805 {
1806 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
1807
1808 gtk_widget_set_allocation (widget, allocation);
1809
1810 gtk_icon_view_layout (icon_view);
1811
1812 if (gtk_widget_get_realized (widget))
1813 {
1814 gdk_window_move_resize (gtk_widget_get_window (widget),
1815 allocation->x, allocation->y,
1816 allocation->width, allocation->height);
1817 gdk_window_resize (icon_view->priv->bin_window,
1818 MAX (icon_view->priv->width, allocation->width),
1819 MAX (icon_view->priv->height, allocation->height));
1820 }
1821
1822 gtk_icon_view_allocate_children (icon_view);
1823
1824 /* Delay signal emission */
1825 g_object_freeze_notify (G_OBJECT (icon_view->priv->hadjustment));
1826 g_object_freeze_notify (G_OBJECT (icon_view->priv->vadjustment));
1827
1828 gtk_icon_view_set_hadjustment_values (icon_view);
1829 gtk_icon_view_set_vadjustment_values (icon_view);
1830
1831 if (gtk_widget_get_realized (widget) &&
1832 icon_view->priv->scroll_to_path)
1833 {
1834 GtkTreePath *path;
1835 path = gtk_tree_row_reference_get_path (icon_view->priv->scroll_to_path);
1836 gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
1837 icon_view->priv->scroll_to_path = NULL;
1838
1839 gtk_icon_view_scroll_to_path (icon_view, path,
1840 icon_view->priv->scroll_to_use_align,
1841 icon_view->priv->scroll_to_row_align,
1842 icon_view->priv->scroll_to_col_align);
1843 gtk_tree_path_free (path);
1844 }
1845
1846 /* Emit any pending signals now */
1847 g_object_thaw_notify (G_OBJECT (icon_view->priv->hadjustment));
1848 g_object_thaw_notify (G_OBJECT (icon_view->priv->vadjustment));
1849 }
1850
1851 static gboolean
gtk_icon_view_draw(GtkWidget * widget,cairo_t * cr)1852 gtk_icon_view_draw (GtkWidget *widget,
1853 cairo_t *cr)
1854 {
1855 GtkIconView *icon_view;
1856 GList *icons;
1857 GtkTreePath *path;
1858 gint dest_index;
1859 GtkIconViewDropPosition dest_pos;
1860 GtkIconViewItem *dest_item = NULL;
1861 GtkStyleContext *context;
1862
1863 icon_view = GTK_ICON_VIEW (widget);
1864
1865 context = gtk_widget_get_style_context (widget);
1866 gtk_render_background (context, cr,
1867 0, 0,
1868 gtk_widget_get_allocated_width (widget),
1869 gtk_widget_get_allocated_height (widget));
1870
1871 if (!gtk_cairo_should_draw_window (cr, icon_view->priv->bin_window))
1872 return FALSE;
1873
1874 cairo_save (cr);
1875
1876 gtk_cairo_transform_to_window (cr, widget, icon_view->priv->bin_window);
1877
1878 cairo_set_line_width (cr, 1.);
1879
1880 gtk_icon_view_get_drag_dest_item (icon_view, &path, &dest_pos);
1881
1882 if (path)
1883 {
1884 dest_index = gtk_tree_path_get_indices (path)[0];
1885 gtk_tree_path_free (path);
1886 }
1887 else
1888 dest_index = -1;
1889
1890 for (icons = icon_view->priv->items; icons; icons = icons->next)
1891 {
1892 GtkIconViewItem *item = icons->data;
1893 GdkRectangle paint_area;
1894
1895 paint_area.x = item->cell_area.x - icon_view->priv->item_padding;
1896 paint_area.y = item->cell_area.y - icon_view->priv->item_padding;
1897 paint_area.width = item->cell_area.width + icon_view->priv->item_padding * 2;
1898 paint_area.height = item->cell_area.height + icon_view->priv->item_padding * 2;
1899
1900 cairo_save (cr);
1901
1902 cairo_rectangle (cr, paint_area.x, paint_area.y, paint_area.width, paint_area.height);
1903 cairo_clip (cr);
1904
1905 if (gdk_cairo_get_clip_rectangle (cr, NULL))
1906 {
1907 gtk_icon_view_paint_item (icon_view, cr, item,
1908 item->cell_area.x, item->cell_area.y,
1909 icon_view->priv->draw_focus);
1910
1911 if (dest_index == item->index)
1912 dest_item = item;
1913 }
1914
1915 cairo_restore (cr);
1916 }
1917
1918 if (dest_item &&
1919 dest_pos != GTK_ICON_VIEW_NO_DROP)
1920 {
1921 GdkRectangle rect = { 0 };
1922
1923 switch (dest_pos)
1924 {
1925 case GTK_ICON_VIEW_DROP_INTO:
1926 rect = dest_item->cell_area;
1927 break;
1928 case GTK_ICON_VIEW_DROP_ABOVE:
1929 rect.x = dest_item->cell_area.x;
1930 rect.y = dest_item->cell_area.y - 1;
1931 rect.width = dest_item->cell_area.width;
1932 rect.height = 2;
1933 break;
1934 case GTK_ICON_VIEW_DROP_LEFT:
1935 rect.x = dest_item->cell_area.x - 1;
1936 rect.y = dest_item->cell_area.y;
1937 rect.width = 2;
1938 rect.height = dest_item->cell_area.height;
1939 break;
1940 case GTK_ICON_VIEW_DROP_BELOW:
1941 rect.x = dest_item->cell_area.x;
1942 rect.y = dest_item->cell_area.y + dest_item->cell_area.height - 1;
1943 rect.width = dest_item->cell_area.width;
1944 rect.height = 2;
1945 break;
1946 case GTK_ICON_VIEW_DROP_RIGHT:
1947 rect.x = dest_item->cell_area.x + dest_item->cell_area.width - 1;
1948 rect.y = dest_item->cell_area.y;
1949 rect.width = 2;
1950 rect.height = dest_item->cell_area.height;
1951 case GTK_ICON_VIEW_NO_DROP: ;
1952 break;
1953 }
1954
1955 gtk_render_focus (context, cr,
1956 rect.x, rect.y,
1957 rect.width, rect.height);
1958 }
1959
1960 if (icon_view->priv->doing_rubberband)
1961 gtk_icon_view_paint_rubberband (icon_view, cr);
1962
1963 cairo_restore (cr);
1964
1965 return GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->draw (widget, cr);
1966 }
1967
1968 static gboolean
rubberband_scroll_timeout(gpointer data)1969 rubberband_scroll_timeout (gpointer data)
1970 {
1971 GtkIconView *icon_view = data;
1972
1973 gtk_adjustment_set_value (icon_view->priv->vadjustment,
1974 gtk_adjustment_get_value (icon_view->priv->vadjustment) +
1975 icon_view->priv->scroll_value_diff);
1976
1977 gtk_icon_view_update_rubberband (icon_view);
1978
1979 return TRUE;
1980 }
1981
1982 static gboolean
gtk_icon_view_motion(GtkWidget * widget,GdkEventMotion * event)1983 gtk_icon_view_motion (GtkWidget *widget,
1984 GdkEventMotion *event)
1985 {
1986 GtkAllocation allocation;
1987 GtkIconView *icon_view;
1988 gint abs_y;
1989
1990 icon_view = GTK_ICON_VIEW (widget);
1991
1992 gtk_icon_view_maybe_begin_drag (icon_view, event);
1993
1994 if (icon_view->priv->doing_rubberband)
1995 {
1996 gtk_icon_view_update_rubberband (widget);
1997
1998 abs_y = event->y - icon_view->priv->height *
1999 (gtk_adjustment_get_value (icon_view->priv->vadjustment) /
2000 (gtk_adjustment_get_upper (icon_view->priv->vadjustment) -
2001 gtk_adjustment_get_lower (icon_view->priv->vadjustment)));
2002
2003 gtk_widget_get_allocation (widget, &allocation);
2004
2005 if (abs_y < 0 || abs_y > allocation.height)
2006 {
2007 if (abs_y < 0)
2008 icon_view->priv->scroll_value_diff = abs_y;
2009 else
2010 icon_view->priv->scroll_value_diff = abs_y - allocation.height;
2011
2012 icon_view->priv->event_last_x = event->x;
2013 icon_view->priv->event_last_y = event->y;
2014
2015 if (icon_view->priv->scroll_timeout_id == 0) {
2016 icon_view->priv->scroll_timeout_id = gdk_threads_add_timeout (30, rubberband_scroll_timeout,
2017 icon_view);
2018 g_source_set_name_by_id (icon_view->priv->scroll_timeout_id, "[gtk+] rubberband_scroll_timeout");
2019 }
2020 }
2021 else
2022 remove_scroll_timeout (icon_view);
2023 }
2024 else
2025 {
2026 GtkIconViewItem *item, *last_prelight_item;
2027 GtkCellRenderer *cell = NULL;
2028
2029 last_prelight_item = icon_view->priv->last_prelight;
2030 item = _gtk_icon_view_get_item_at_coords (icon_view,
2031 event->x, event->y,
2032 FALSE,
2033 &cell);
2034
2035 if (item != last_prelight_item)
2036 {
2037 if (item != NULL)
2038 {
2039 gtk_icon_view_queue_draw_item (icon_view, item);
2040 }
2041
2042 if (last_prelight_item != NULL)
2043 {
2044 gtk_icon_view_queue_draw_item (icon_view,
2045 icon_view->priv->last_prelight);
2046 }
2047
2048 icon_view->priv->last_prelight = item;
2049 }
2050 }
2051
2052 return TRUE;
2053 }
2054
2055 static gboolean
gtk_icon_view_leave(GtkWidget * widget,GdkEventCrossing * event)2056 gtk_icon_view_leave (GtkWidget *widget,
2057 GdkEventCrossing *event)
2058 {
2059 GtkIconView *icon_view;
2060 GtkIconViewPrivate *priv;
2061
2062 icon_view = GTK_ICON_VIEW (widget);
2063 priv = icon_view->priv;
2064
2065 if (priv->last_prelight)
2066 {
2067 gtk_icon_view_queue_draw_item (icon_view, priv->last_prelight);
2068 priv->last_prelight = NULL;
2069 }
2070
2071 return FALSE;
2072 }
2073
2074 static void
gtk_icon_view_remove(GtkContainer * container,GtkWidget * widget)2075 gtk_icon_view_remove (GtkContainer *container,
2076 GtkWidget *widget)
2077 {
2078 GtkIconView *icon_view;
2079 GtkIconViewChild *child = NULL;
2080 GList *tmp_list;
2081
2082 icon_view = GTK_ICON_VIEW (container);
2083
2084 tmp_list = icon_view->priv->children;
2085 while (tmp_list)
2086 {
2087 child = tmp_list->data;
2088 if (child->widget == widget)
2089 {
2090 gtk_widget_unparent (widget);
2091
2092 icon_view->priv->children = g_list_remove_link (icon_view->priv->children, tmp_list);
2093 g_list_free_1 (tmp_list);
2094 g_free (child);
2095 return;
2096 }
2097
2098 tmp_list = tmp_list->next;
2099 }
2100 }
2101
2102 static void
gtk_icon_view_forall(GtkContainer * container,gboolean include_internals,GtkCallback callback,gpointer callback_data)2103 gtk_icon_view_forall (GtkContainer *container,
2104 gboolean include_internals,
2105 GtkCallback callback,
2106 gpointer callback_data)
2107 {
2108 GtkIconView *icon_view;
2109 GtkIconViewChild *child = NULL;
2110 GList *tmp_list;
2111
2112 icon_view = GTK_ICON_VIEW (container);
2113
2114 tmp_list = icon_view->priv->children;
2115 while (tmp_list)
2116 {
2117 child = tmp_list->data;
2118 tmp_list = tmp_list->next;
2119
2120 (* callback) (child->widget, callback_data);
2121 }
2122 }
2123
2124 static void
gtk_icon_view_item_selected_changed(GtkIconView * icon_view,GtkIconViewItem * item)2125 gtk_icon_view_item_selected_changed (GtkIconView *icon_view,
2126 GtkIconViewItem *item)
2127 {
2128 AtkObject *obj;
2129 AtkObject *item_obj;
2130
2131 obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
2132 if (obj != NULL)
2133 {
2134 item_obj = atk_object_ref_accessible_child (obj, item->index);
2135 if (item_obj != NULL)
2136 {
2137 atk_object_notify_state_change (item_obj, ATK_STATE_SELECTED, item->selected);
2138 g_object_unref (item_obj);
2139 }
2140 }
2141 }
2142
2143 static void
gtk_icon_view_add_editable(GtkCellArea * area,GtkCellRenderer * renderer,GtkCellEditable * editable,GdkRectangle * cell_area,const gchar * path,GtkIconView * icon_view)2144 gtk_icon_view_add_editable (GtkCellArea *area,
2145 GtkCellRenderer *renderer,
2146 GtkCellEditable *editable,
2147 GdkRectangle *cell_area,
2148 const gchar *path,
2149 GtkIconView *icon_view)
2150 {
2151 GtkIconViewChild *child;
2152 GtkWidget *widget = GTK_WIDGET (editable);
2153
2154 child = g_new (GtkIconViewChild, 1);
2155
2156 child->widget = widget;
2157 child->area.x = cell_area->x;
2158 child->area.y = cell_area->y;
2159 child->area.width = cell_area->width;
2160 child->area.height = cell_area->height;
2161
2162 icon_view->priv->children = g_list_append (icon_view->priv->children, child);
2163
2164 if (gtk_widget_get_realized (GTK_WIDGET (icon_view)))
2165 gtk_widget_set_parent_window (child->widget, icon_view->priv->bin_window);
2166
2167 gtk_widget_set_parent (widget, GTK_WIDGET (icon_view));
2168 }
2169
2170 static void
gtk_icon_view_remove_editable(GtkCellArea * area,GtkCellRenderer * renderer,GtkCellEditable * editable,GtkIconView * icon_view)2171 gtk_icon_view_remove_editable (GtkCellArea *area,
2172 GtkCellRenderer *renderer,
2173 GtkCellEditable *editable,
2174 GtkIconView *icon_view)
2175 {
2176 GtkTreePath *path;
2177
2178 if (gtk_widget_has_focus (GTK_WIDGET (editable)))
2179 gtk_widget_grab_focus (GTK_WIDGET (icon_view));
2180
2181 gtk_container_remove (GTK_CONTAINER (icon_view),
2182 GTK_WIDGET (editable));
2183
2184 path = gtk_tree_path_new_from_string (gtk_cell_area_get_current_path_string (area));
2185 gtk_icon_view_queue_draw_path (icon_view, path);
2186 gtk_tree_path_free (path);
2187 }
2188
2189 /**
2190 * gtk_icon_view_set_cursor:
2191 * @icon_view: A #GtkIconView
2192 * @path: A #GtkTreePath
2193 * @cell: (allow-none): One of the cell renderers of @icon_view, or %NULL
2194 * @start_editing: %TRUE if the specified cell should start being edited.
2195 *
2196 * Sets the current keyboard focus to be at @path, and selects it. This is
2197 * useful when you want to focus the user’s attention on a particular item.
2198 * If @cell is not %NULL, then focus is given to the cell specified by
2199 * it. Additionally, if @start_editing is %TRUE, then editing should be
2200 * started in the specified cell.
2201 *
2202 * This function is often followed by `gtk_widget_grab_focus
2203 * (icon_view)` in order to give keyboard focus to the widget.
2204 * Please note that editing can only happen when the widget is realized.
2205 *
2206 * Since: 2.8
2207 **/
2208 void
gtk_icon_view_set_cursor(GtkIconView * icon_view,GtkTreePath * path,GtkCellRenderer * cell,gboolean start_editing)2209 gtk_icon_view_set_cursor (GtkIconView *icon_view,
2210 GtkTreePath *path,
2211 GtkCellRenderer *cell,
2212 gboolean start_editing)
2213 {
2214 GtkIconViewItem *item = NULL;
2215
2216 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
2217 g_return_if_fail (path != NULL);
2218 g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
2219
2220 if (icon_view->priv->cell_area)
2221 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
2222
2223 if (gtk_tree_path_get_depth (path) == 1)
2224 item = g_list_nth_data (icon_view->priv->items,
2225 gtk_tree_path_get_indices(path)[0]);
2226
2227 if (!item)
2228 return;
2229
2230 _gtk_icon_view_set_cursor_item (icon_view, item, cell);
2231 gtk_icon_view_scroll_to_path (icon_view, path, FALSE, 0.0, 0.0);
2232
2233 if (start_editing &&
2234 icon_view->priv->cell_area)
2235 {
2236 GtkCellAreaContext *context;
2237
2238 context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
2239 _gtk_icon_view_set_cell_data (icon_view, item);
2240 gtk_cell_area_activate (icon_view->priv->cell_area, context,
2241 GTK_WIDGET (icon_view), &item->cell_area,
2242 0 /* XXX flags */, TRUE);
2243 }
2244 }
2245
2246 /**
2247 * gtk_icon_view_get_cursor:
2248 * @icon_view: A #GtkIconView
2249 * @path: (out) (allow-none) (transfer full): Return location for the current
2250 * cursor path, or %NULL
2251 * @cell: (out) (allow-none) (transfer none): Return location the current
2252 * focus cell, or %NULL
2253 *
2254 * Fills in @path and @cell with the current cursor path and cell.
2255 * If the cursor isn’t currently set, then *@path will be %NULL.
2256 * If no cell currently has focus, then *@cell will be %NULL.
2257 *
2258 * The returned #GtkTreePath must be freed with gtk_tree_path_free().
2259 *
2260 * Returns: %TRUE if the cursor is set.
2261 *
2262 * Since: 2.8
2263 **/
2264 gboolean
gtk_icon_view_get_cursor(GtkIconView * icon_view,GtkTreePath ** path,GtkCellRenderer ** cell)2265 gtk_icon_view_get_cursor (GtkIconView *icon_view,
2266 GtkTreePath **path,
2267 GtkCellRenderer **cell)
2268 {
2269 GtkIconViewItem *item;
2270
2271 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
2272
2273 item = icon_view->priv->cursor_item;
2274
2275 if (path != NULL)
2276 {
2277 if (item != NULL)
2278 *path = gtk_tree_path_new_from_indices (item->index, -1);
2279 else
2280 *path = NULL;
2281 }
2282
2283 if (cell != NULL && item != NULL && icon_view->priv->cell_area != NULL)
2284 *cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
2285
2286 return (item != NULL);
2287 }
2288
2289 static gboolean
gtk_icon_view_button_press(GtkWidget * widget,GdkEventButton * event)2290 gtk_icon_view_button_press (GtkWidget *widget,
2291 GdkEventButton *event)
2292 {
2293 GtkIconView *icon_view;
2294 GtkIconViewItem *item;
2295 gboolean dirty = FALSE;
2296 GtkCellRenderer *cell = NULL, *cursor_cell = NULL;
2297
2298 icon_view = GTK_ICON_VIEW (widget);
2299
2300 if (event->window != icon_view->priv->bin_window)
2301 return FALSE;
2302
2303 if (!gtk_widget_has_focus (widget))
2304 gtk_widget_grab_focus (widget);
2305
2306 if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
2307 {
2308 GdkModifierType extend_mod_mask;
2309 GdkModifierType modify_mod_mask;
2310
2311 extend_mod_mask =
2312 gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
2313
2314 modify_mod_mask =
2315 gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
2316
2317 item = _gtk_icon_view_get_item_at_coords (icon_view,
2318 event->x, event->y,
2319 FALSE,
2320 &cell);
2321
2322 /*
2323 * We consider only the cells' area as the item area if the
2324 * item is not selected, but if it *is* selected, the complete
2325 * selection rectangle is considered to be part of the item.
2326 */
2327 if (item != NULL && (cell != NULL || item->selected))
2328 {
2329 if (cell != NULL)
2330 {
2331 if (gtk_cell_renderer_is_activatable (cell))
2332 cursor_cell = cell;
2333 }
2334
2335 gtk_icon_view_scroll_to_item (icon_view, item);
2336
2337 if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
2338 {
2339 _gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
2340 }
2341 else if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE &&
2342 (event->state & extend_mod_mask))
2343 {
2344 gtk_icon_view_unselect_all_internal (icon_view);
2345
2346 _gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
2347 if (!icon_view->priv->anchor_item)
2348 icon_view->priv->anchor_item = item;
2349 else
2350 gtk_icon_view_select_all_between (icon_view,
2351 icon_view->priv->anchor_item,
2352 item);
2353 dirty = TRUE;
2354 }
2355 else
2356 {
2357 if ((icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE ||
2358 ((icon_view->priv->selection_mode == GTK_SELECTION_SINGLE) && item->selected)) &&
2359 (event->state & modify_mod_mask))
2360 {
2361 item->selected = !item->selected;
2362 gtk_icon_view_queue_draw_item (icon_view, item);
2363 dirty = TRUE;
2364 }
2365 else
2366 {
2367 gtk_icon_view_unselect_all_internal (icon_view);
2368
2369 item->selected = TRUE;
2370 gtk_icon_view_queue_draw_item (icon_view, item);
2371 dirty = TRUE;
2372 }
2373 _gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
2374 icon_view->priv->anchor_item = item;
2375 }
2376
2377 /* Save press to possibly begin a drag */
2378 if (icon_view->priv->pressed_button < 0)
2379 {
2380 icon_view->priv->pressed_button = event->button;
2381 icon_view->priv->press_start_x = event->x;
2382 icon_view->priv->press_start_y = event->y;
2383 }
2384
2385 icon_view->priv->last_single_clicked = item;
2386
2387 /* cancel the current editing, if it exists */
2388 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
2389
2390 if (cell != NULL && gtk_cell_renderer_is_activatable (cell))
2391 {
2392 GtkCellAreaContext *context;
2393
2394 context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
2395
2396 _gtk_icon_view_set_cell_data (icon_view, item);
2397 gtk_cell_area_activate (icon_view->priv->cell_area, context,
2398 GTK_WIDGET (icon_view),
2399 &item->cell_area, 0/* XXX flags */, FALSE);
2400 }
2401 }
2402 else
2403 {
2404 if (icon_view->priv->selection_mode != GTK_SELECTION_BROWSE &&
2405 !(event->state & modify_mod_mask))
2406 {
2407 dirty = gtk_icon_view_unselect_all_internal (icon_view);
2408 }
2409
2410 if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
2411 gtk_icon_view_start_rubberbanding (icon_view, event->device, event->x, event->y);
2412 }
2413
2414 /* don't draw keyboard focus around an clicked-on item */
2415 icon_view->priv->draw_focus = FALSE;
2416 }
2417
2418 if (!icon_view->priv->activate_on_single_click
2419 && event->button == GDK_BUTTON_PRIMARY
2420 && event->type == GDK_2BUTTON_PRESS)
2421 {
2422 item = _gtk_icon_view_get_item_at_coords (icon_view,
2423 event->x, event->y,
2424 FALSE,
2425 NULL);
2426
2427 if (item && item == icon_view->priv->last_single_clicked)
2428 {
2429 GtkTreePath *path;
2430
2431 path = gtk_tree_path_new_from_indices (item->index, -1);
2432 gtk_icon_view_item_activated (icon_view, path);
2433 gtk_tree_path_free (path);
2434 }
2435
2436 icon_view->priv->last_single_clicked = NULL;
2437 icon_view->priv->pressed_button = -1;
2438 }
2439
2440 if (dirty)
2441 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2442
2443 return event->button == GDK_BUTTON_PRIMARY;
2444 }
2445
2446 static gboolean
button_event_modifies_selection(GdkEventButton * event)2447 button_event_modifies_selection (GdkEventButton *event)
2448 {
2449 return (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) != 0;
2450 }
2451
2452 static gboolean
gtk_icon_view_button_release(GtkWidget * widget,GdkEventButton * event)2453 gtk_icon_view_button_release (GtkWidget *widget,
2454 GdkEventButton *event)
2455 {
2456 GtkIconView *icon_view;
2457
2458 icon_view = GTK_ICON_VIEW (widget);
2459
2460 if (icon_view->priv->pressed_button == event->button)
2461 icon_view->priv->pressed_button = -1;
2462
2463 gtk_icon_view_stop_rubberbanding (icon_view);
2464
2465 remove_scroll_timeout (icon_view);
2466
2467 if (event->button == GDK_BUTTON_PRIMARY
2468 && icon_view->priv->activate_on_single_click
2469 && !button_event_modifies_selection (event)
2470 && icon_view->priv->last_single_clicked != NULL)
2471 {
2472 GtkIconViewItem *item;
2473
2474 item = _gtk_icon_view_get_item_at_coords (icon_view,
2475 event->x, event->y,
2476 FALSE,
2477 NULL);
2478 if (item == icon_view->priv->last_single_clicked)
2479 {
2480 GtkTreePath *path;
2481 path = gtk_tree_path_new_from_indices (item->index, -1);
2482 gtk_icon_view_item_activated (icon_view, path);
2483 gtk_tree_path_free (path);
2484 }
2485
2486 icon_view->priv->last_single_clicked = NULL;
2487 }
2488
2489 return TRUE;
2490 }
2491
2492 static gboolean
gtk_icon_view_key_press(GtkWidget * widget,GdkEventKey * event)2493 gtk_icon_view_key_press (GtkWidget *widget,
2494 GdkEventKey *event)
2495 {
2496 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
2497
2498 if (icon_view->priv->doing_rubberband)
2499 {
2500 if (event->keyval == GDK_KEY_Escape)
2501 gtk_icon_view_stop_rubberbanding (icon_view);
2502
2503 return TRUE;
2504 }
2505
2506 return GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->key_press_event (widget, event);
2507 }
2508
2509 static gboolean
gtk_icon_view_key_release(GtkWidget * widget,GdkEventKey * event)2510 gtk_icon_view_key_release (GtkWidget *widget,
2511 GdkEventKey *event)
2512 {
2513 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
2514
2515 if (icon_view->priv->doing_rubberband)
2516 return TRUE;
2517
2518 return GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->key_release_event (widget, event);
2519 }
2520
2521 static void
gtk_icon_view_update_rubberband(gpointer data)2522 gtk_icon_view_update_rubberband (gpointer data)
2523 {
2524 GtkIconView *icon_view;
2525 gint x, y;
2526 GdkRectangle old_area;
2527 GdkRectangle new_area;
2528 cairo_region_t *invalid_region;
2529
2530 icon_view = GTK_ICON_VIEW (data);
2531
2532 gdk_window_get_device_position (icon_view->priv->bin_window,
2533 icon_view->priv->rubberband_device,
2534 &x, &y, NULL);
2535
2536 x = MAX (x, 0);
2537 y = MAX (y, 0);
2538
2539 old_area.x = MIN (icon_view->priv->rubberband_x1,
2540 icon_view->priv->rubberband_x2);
2541 old_area.y = MIN (icon_view->priv->rubberband_y1,
2542 icon_view->priv->rubberband_y2);
2543 old_area.width = ABS (icon_view->priv->rubberband_x2 -
2544 icon_view->priv->rubberband_x1) + 1;
2545 old_area.height = ABS (icon_view->priv->rubberband_y2 -
2546 icon_view->priv->rubberband_y1) + 1;
2547
2548 new_area.x = MIN (icon_view->priv->rubberband_x1, x);
2549 new_area.y = MIN (icon_view->priv->rubberband_y1, y);
2550 new_area.width = ABS (x - icon_view->priv->rubberband_x1) + 1;
2551 new_area.height = ABS (y - icon_view->priv->rubberband_y1) + 1;
2552
2553 invalid_region = cairo_region_create_rectangle (&old_area);
2554 cairo_region_union_rectangle (invalid_region, &new_area);
2555
2556 gdk_window_invalidate_region (icon_view->priv->bin_window, invalid_region, TRUE);
2557
2558 cairo_region_destroy (invalid_region);
2559
2560 icon_view->priv->rubberband_x2 = x;
2561 icon_view->priv->rubberband_y2 = y;
2562
2563 gtk_icon_view_update_rubberband_selection (icon_view);
2564 }
2565
2566 static void
gtk_icon_view_start_rubberbanding(GtkIconView * icon_view,GdkDevice * device,gint x,gint y)2567 gtk_icon_view_start_rubberbanding (GtkIconView *icon_view,
2568 GdkDevice *device,
2569 gint x,
2570 gint y)
2571 {
2572 GtkIconViewPrivate *priv = icon_view->priv;
2573 GList *items;
2574 GtkCssNode *widget_node;
2575
2576 if (priv->rubberband_device)
2577 return;
2578
2579 for (items = priv->items; items; items = items->next)
2580 {
2581 GtkIconViewItem *item = items->data;
2582
2583 item->selected_before_rubberbanding = item->selected;
2584 }
2585
2586 priv->rubberband_x1 = x;
2587 priv->rubberband_y1 = y;
2588 priv->rubberband_x2 = x;
2589 priv->rubberband_y2 = y;
2590
2591 priv->doing_rubberband = TRUE;
2592 priv->rubberband_device = device;
2593
2594 widget_node = gtk_widget_get_css_node (GTK_WIDGET (icon_view));
2595 priv->rubberband_node = gtk_css_node_new ();
2596 gtk_css_node_set_name (priv->rubberband_node, I_("rubberband"));
2597 gtk_css_node_set_parent (priv->rubberband_node, widget_node);
2598 gtk_css_node_set_state (priv->rubberband_node, gtk_css_node_get_state (widget_node));
2599 g_object_unref (priv->rubberband_node);
2600 }
2601
2602 static void
gtk_icon_view_stop_rubberbanding(GtkIconView * icon_view)2603 gtk_icon_view_stop_rubberbanding (GtkIconView *icon_view)
2604 {
2605 GtkIconViewPrivate *priv = icon_view->priv;
2606
2607 if (!priv->doing_rubberband)
2608 return;
2609
2610 priv->doing_rubberband = FALSE;
2611 priv->rubberband_device = NULL;
2612 gtk_css_node_set_parent (priv->rubberband_node, NULL);
2613 priv->rubberband_node = NULL;
2614
2615 gtk_widget_queue_draw (GTK_WIDGET (icon_view));
2616 }
2617
2618 static void
gtk_icon_view_update_rubberband_selection(GtkIconView * icon_view)2619 gtk_icon_view_update_rubberband_selection (GtkIconView *icon_view)
2620 {
2621 GList *items;
2622 gint x, y, width, height;
2623 gboolean dirty = FALSE;
2624
2625 x = MIN (icon_view->priv->rubberband_x1,
2626 icon_view->priv->rubberband_x2);
2627 y = MIN (icon_view->priv->rubberband_y1,
2628 icon_view->priv->rubberband_y2);
2629 width = ABS (icon_view->priv->rubberband_x1 -
2630 icon_view->priv->rubberband_x2);
2631 height = ABS (icon_view->priv->rubberband_y1 -
2632 icon_view->priv->rubberband_y2);
2633
2634 for (items = icon_view->priv->items; items; items = items->next)
2635 {
2636 GtkIconViewItem *item = items->data;
2637 gboolean is_in;
2638 gboolean selected;
2639
2640 is_in = gtk_icon_view_item_hit_test (icon_view, item,
2641 x, y, width, height);
2642
2643 selected = is_in ^ item->selected_before_rubberbanding;
2644
2645 if (item->selected != selected)
2646 {
2647 item->selected = selected;
2648 dirty = TRUE;
2649 gtk_icon_view_queue_draw_item (icon_view, item);
2650 }
2651 }
2652
2653 if (dirty)
2654 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2655 }
2656
2657
2658 typedef struct {
2659 GdkRectangle hit_rect;
2660 gboolean hit;
2661 } HitTestData;
2662
2663 static gboolean
hit_test(GtkCellRenderer * renderer,const GdkRectangle * cell_area,const GdkRectangle * cell_background,HitTestData * data)2664 hit_test (GtkCellRenderer *renderer,
2665 const GdkRectangle *cell_area,
2666 const GdkRectangle *cell_background,
2667 HitTestData *data)
2668 {
2669 if (MIN (data->hit_rect.x + data->hit_rect.width, cell_area->x + cell_area->width) -
2670 MAX (data->hit_rect.x, cell_area->x) > 0 &&
2671 MIN (data->hit_rect.y + data->hit_rect.height, cell_area->y + cell_area->height) -
2672 MAX (data->hit_rect.y, cell_area->y) > 0)
2673 data->hit = TRUE;
2674
2675 return (data->hit != FALSE);
2676 }
2677
2678 static gboolean
gtk_icon_view_item_hit_test(GtkIconView * icon_view,GtkIconViewItem * item,gint x,gint y,gint width,gint height)2679 gtk_icon_view_item_hit_test (GtkIconView *icon_view,
2680 GtkIconViewItem *item,
2681 gint x,
2682 gint y,
2683 gint width,
2684 gint height)
2685 {
2686 HitTestData data = { { x, y, width, height }, FALSE };
2687 GtkCellAreaContext *context;
2688 GdkRectangle *item_area = &item->cell_area;
2689
2690 if (MIN (x + width, item_area->x + item_area->width) - MAX (x, item_area->x) <= 0 ||
2691 MIN (y + height, item_area->y + item_area->height) - MAX (y, item_area->y) <= 0)
2692 return FALSE;
2693
2694 context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
2695
2696 _gtk_icon_view_set_cell_data (icon_view, item);
2697 gtk_cell_area_foreach_alloc (icon_view->priv->cell_area, context,
2698 GTK_WIDGET (icon_view),
2699 item_area, item_area,
2700 (GtkCellAllocCallback)hit_test, &data);
2701
2702 return data.hit;
2703 }
2704
2705 static gboolean
gtk_icon_view_unselect_all_internal(GtkIconView * icon_view)2706 gtk_icon_view_unselect_all_internal (GtkIconView *icon_view)
2707 {
2708 gboolean dirty = FALSE;
2709 GList *items;
2710
2711 if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
2712 return FALSE;
2713
2714 for (items = icon_view->priv->items; items; items = items->next)
2715 {
2716 GtkIconViewItem *item = items->data;
2717
2718 if (item->selected)
2719 {
2720 item->selected = FALSE;
2721 dirty = TRUE;
2722 gtk_icon_view_queue_draw_item (icon_view, item);
2723 gtk_icon_view_item_selected_changed (icon_view, item);
2724 }
2725 }
2726
2727 return dirty;
2728 }
2729
2730
2731 /* GtkIconView signals */
2732 static void
gtk_icon_view_real_select_all(GtkIconView * icon_view)2733 gtk_icon_view_real_select_all (GtkIconView *icon_view)
2734 {
2735 gtk_icon_view_select_all (icon_view);
2736 }
2737
2738 static void
gtk_icon_view_real_unselect_all(GtkIconView * icon_view)2739 gtk_icon_view_real_unselect_all (GtkIconView *icon_view)
2740 {
2741 gtk_icon_view_unselect_all (icon_view);
2742 }
2743
2744 static void
gtk_icon_view_real_select_cursor_item(GtkIconView * icon_view)2745 gtk_icon_view_real_select_cursor_item (GtkIconView *icon_view)
2746 {
2747 gtk_icon_view_unselect_all (icon_view);
2748
2749 if (icon_view->priv->cursor_item != NULL)
2750 _gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2751 }
2752
2753 static gboolean
gtk_icon_view_real_activate_cursor_item(GtkIconView * icon_view)2754 gtk_icon_view_real_activate_cursor_item (GtkIconView *icon_view)
2755 {
2756 GtkTreePath *path;
2757 GtkCellAreaContext *context;
2758
2759 if (!icon_view->priv->cursor_item)
2760 return FALSE;
2761
2762 context = g_ptr_array_index (icon_view->priv->row_contexts, icon_view->priv->cursor_item->row);
2763
2764 _gtk_icon_view_set_cell_data (icon_view, icon_view->priv->cursor_item);
2765 gtk_cell_area_activate (icon_view->priv->cell_area, context,
2766 GTK_WIDGET (icon_view),
2767 &icon_view->priv->cursor_item->cell_area,
2768 0 /* XXX flags */,
2769 FALSE);
2770
2771 path = gtk_tree_path_new_from_indices (icon_view->priv->cursor_item->index, -1);
2772 gtk_icon_view_item_activated (icon_view, path);
2773 gtk_tree_path_free (path);
2774
2775 return TRUE;
2776 }
2777
2778 static void
gtk_icon_view_real_toggle_cursor_item(GtkIconView * icon_view)2779 gtk_icon_view_real_toggle_cursor_item (GtkIconView *icon_view)
2780 {
2781 if (!icon_view->priv->cursor_item)
2782 return;
2783
2784 switch (icon_view->priv->selection_mode)
2785 {
2786 case GTK_SELECTION_NONE:
2787 break;
2788 case GTK_SELECTION_BROWSE:
2789 _gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2790 break;
2791 case GTK_SELECTION_SINGLE:
2792 if (icon_view->priv->cursor_item->selected)
2793 _gtk_icon_view_unselect_item (icon_view, icon_view->priv->cursor_item);
2794 else
2795 _gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
2796 break;
2797 case GTK_SELECTION_MULTIPLE:
2798 icon_view->priv->cursor_item->selected = !icon_view->priv->cursor_item->selected;
2799 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
2800
2801 gtk_icon_view_item_selected_changed (icon_view, icon_view->priv->cursor_item);
2802 gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
2803 break;
2804 }
2805 }
2806
2807 static void
gtk_icon_view_set_hadjustment_values(GtkIconView * icon_view)2808 gtk_icon_view_set_hadjustment_values (GtkIconView *icon_view)
2809 {
2810 GtkAllocation allocation;
2811 GtkAdjustment *adj = icon_view->priv->hadjustment;
2812 gdouble old_page_size;
2813 gdouble old_upper;
2814 gdouble old_value;
2815 gdouble new_value;
2816 gdouble new_upper;
2817
2818 gtk_widget_get_allocation (GTK_WIDGET (icon_view), &allocation);
2819
2820 old_value = gtk_adjustment_get_value (adj);
2821 old_upper = gtk_adjustment_get_upper (adj);
2822 old_page_size = gtk_adjustment_get_page_size (adj);
2823 new_upper = MAX (allocation.width, icon_view->priv->width);
2824
2825 if (gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL)
2826 {
2827 /* Make sure no scrolling occurs for RTL locales also (if possible) */
2828 /* Quick explanation:
2829 * In LTR locales, leftmost portion of visible rectangle should stay
2830 * fixed, which means left edge of scrollbar thumb should remain fixed
2831 * and thus adjustment's value should stay the same.
2832 *
2833 * In RTL locales, we want to keep rightmost portion of visible
2834 * rectangle fixed. This means right edge of thumb should remain fixed.
2835 * In this case, upper - value - page_size should remain constant.
2836 */
2837 new_value = (new_upper - allocation.width) -
2838 (old_upper - old_value - old_page_size);
2839 new_value = CLAMP (new_value, 0, new_upper - allocation.width);
2840 }
2841 else
2842 new_value = CLAMP (old_value, 0, new_upper - allocation.width);
2843
2844 gtk_adjustment_configure (adj,
2845 new_value,
2846 0.0,
2847 new_upper,
2848 allocation.width * 0.1,
2849 allocation.width * 0.9,
2850 allocation.width);
2851 }
2852
2853 static void
gtk_icon_view_set_vadjustment_values(GtkIconView * icon_view)2854 gtk_icon_view_set_vadjustment_values (GtkIconView *icon_view)
2855 {
2856 GtkAllocation allocation;
2857 GtkAdjustment *adj = icon_view->priv->vadjustment;
2858
2859 gtk_widget_get_allocation (GTK_WIDGET (icon_view), &allocation);
2860
2861 gtk_adjustment_configure (adj,
2862 gtk_adjustment_get_value (adj),
2863 0.0,
2864 MAX (allocation.height, icon_view->priv->height),
2865 allocation.height * 0.1,
2866 allocation.height * 0.9,
2867 allocation.height);
2868 }
2869
2870 static void
gtk_icon_view_set_hadjustment(GtkIconView * icon_view,GtkAdjustment * adjustment)2871 gtk_icon_view_set_hadjustment (GtkIconView *icon_view,
2872 GtkAdjustment *adjustment)
2873 {
2874 GtkIconViewPrivate *priv = icon_view->priv;
2875
2876 if (adjustment && priv->hadjustment == adjustment)
2877 return;
2878
2879 if (priv->hadjustment != NULL)
2880 {
2881 g_signal_handlers_disconnect_matched (priv->hadjustment,
2882 G_SIGNAL_MATCH_DATA,
2883 0, 0, NULL, NULL, icon_view);
2884 g_object_unref (priv->hadjustment);
2885 }
2886
2887 if (!adjustment)
2888 adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
2889 0.0, 0.0, 0.0);
2890
2891 g_signal_connect (adjustment, "value-changed",
2892 G_CALLBACK (gtk_icon_view_adjustment_changed), icon_view);
2893 priv->hadjustment = g_object_ref_sink (adjustment);
2894 gtk_icon_view_set_hadjustment_values (icon_view);
2895
2896 g_object_notify (G_OBJECT (icon_view), "hadjustment");
2897 }
2898
2899 static void
gtk_icon_view_set_vadjustment(GtkIconView * icon_view,GtkAdjustment * adjustment)2900 gtk_icon_view_set_vadjustment (GtkIconView *icon_view,
2901 GtkAdjustment *adjustment)
2902 {
2903 GtkIconViewPrivate *priv = icon_view->priv;
2904
2905 if (adjustment && priv->vadjustment == adjustment)
2906 return;
2907
2908 if (priv->vadjustment != NULL)
2909 {
2910 g_signal_handlers_disconnect_matched (priv->vadjustment,
2911 G_SIGNAL_MATCH_DATA,
2912 0, 0, NULL, NULL, icon_view);
2913 g_object_unref (priv->vadjustment);
2914 }
2915
2916 if (!adjustment)
2917 adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
2918 0.0, 0.0, 0.0);
2919
2920 g_signal_connect (adjustment, "value-changed",
2921 G_CALLBACK (gtk_icon_view_adjustment_changed), icon_view);
2922 priv->vadjustment = g_object_ref_sink (adjustment);
2923 gtk_icon_view_set_vadjustment_values (icon_view);
2924
2925 g_object_notify (G_OBJECT (icon_view), "vadjustment");
2926 }
2927
2928 static void
gtk_icon_view_adjustment_changed(GtkAdjustment * adjustment,GtkIconView * icon_view)2929 gtk_icon_view_adjustment_changed (GtkAdjustment *adjustment,
2930 GtkIconView *icon_view)
2931 {
2932 GtkIconViewPrivate *priv = icon_view->priv;
2933
2934 if (gtk_widget_get_realized (GTK_WIDGET (icon_view)))
2935 {
2936 gdk_window_move (priv->bin_window,
2937 - gtk_adjustment_get_value (priv->hadjustment),
2938 - gtk_adjustment_get_value (priv->vadjustment));
2939
2940 if (icon_view->priv->doing_rubberband)
2941 gtk_icon_view_update_rubberband (GTK_WIDGET (icon_view));
2942
2943 _gtk_icon_view_accessible_adjustment_changed (icon_view);
2944 }
2945 }
2946
2947 static gint
compare_sizes(gconstpointer p1,gconstpointer p2,gpointer unused)2948 compare_sizes (gconstpointer p1,
2949 gconstpointer p2,
2950 gpointer unused)
2951 {
2952 return GPOINTER_TO_INT (((const GtkRequestedSize *) p1)->data)
2953 - GPOINTER_TO_INT (((const GtkRequestedSize *) p2)->data);
2954 }
2955
2956 static void
gtk_icon_view_layout(GtkIconView * icon_view)2957 gtk_icon_view_layout (GtkIconView *icon_view)
2958 {
2959 GtkIconViewPrivate *priv = icon_view->priv;
2960 GtkWidget *widget = GTK_WIDGET (icon_view);
2961 GList *items;
2962 gint item_width; /* this doesn't include item_padding */
2963 gint n_columns, n_rows, n_items;
2964 gint col, row;
2965 GtkRequestedSize *sizes;
2966 gboolean rtl;
2967
2968 if (gtk_icon_view_is_empty (icon_view))
2969 return;
2970
2971 rtl = gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL;
2972 n_items = gtk_icon_view_get_n_items (icon_view);
2973
2974 gtk_icon_view_compute_n_items_for_size (icon_view,
2975 GTK_ORIENTATION_HORIZONTAL,
2976 gtk_widget_get_allocated_width (widget),
2977 NULL, NULL,
2978 &n_columns, &item_width);
2979 n_rows = (n_items + n_columns - 1) / n_columns;
2980
2981 priv->width = n_columns * (item_width + 2 * priv->item_padding + priv->column_spacing) - priv->column_spacing;
2982 priv->width += 2 * priv->margin;
2983 priv->width = MAX (priv->width, gtk_widget_get_allocated_width (widget));
2984
2985 /* Clear the per row contexts */
2986 g_ptr_array_set_size (icon_view->priv->row_contexts, 0);
2987
2988 gtk_cell_area_context_reset (priv->cell_area_context);
2989 /* because layouting is complicated. We designed an API
2990 * that is O(N²) and nonsensical.
2991 * And we're proud of it. */
2992 for (items = priv->items; items; items = items->next)
2993 {
2994 _gtk_icon_view_set_cell_data (icon_view, items->data);
2995 gtk_cell_area_get_preferred_width (priv->cell_area,
2996 priv->cell_area_context,
2997 widget,
2998 NULL, NULL);
2999 }
3000
3001 sizes = g_newa (GtkRequestedSize, n_rows);
3002 items = priv->items;
3003 priv->height = priv->margin;
3004
3005 /* Collect the heights for all rows */
3006 for (row = 0; row < n_rows; row++)
3007 {
3008 GtkCellAreaContext *context = gtk_cell_area_copy_context (priv->cell_area, priv->cell_area_context);
3009 g_ptr_array_add (priv->row_contexts, context);
3010
3011 for (col = 0; col < n_columns && items; col++, items = items->next)
3012 {
3013 GtkIconViewItem *item = items->data;
3014
3015 _gtk_icon_view_set_cell_data (icon_view, item);
3016 gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
3017 context,
3018 widget,
3019 item_width,
3020 NULL, NULL);
3021 }
3022
3023 sizes[row].data = GINT_TO_POINTER (row);
3024 gtk_cell_area_context_get_preferred_height_for_width (context,
3025 item_width,
3026 &sizes[row].minimum_size,
3027 &sizes[row].natural_size);
3028 priv->height += sizes[row].minimum_size + 2 * priv->item_padding + priv->row_spacing;
3029 }
3030
3031 priv->height -= priv->row_spacing;
3032 priv->height += priv->margin;
3033 priv->height = MIN (priv->height, gtk_widget_get_allocated_height (widget));
3034
3035 gtk_distribute_natural_allocation (gtk_widget_get_allocated_height (widget) - priv->height,
3036 n_rows,
3037 sizes);
3038
3039 /* Actually allocate the rows */
3040 g_qsort_with_data (sizes, n_rows, sizeof (GtkRequestedSize), compare_sizes, NULL);
3041
3042 items = priv->items;
3043 priv->height = priv->margin;
3044
3045 for (row = 0; row < n_rows; row++)
3046 {
3047 GtkCellAreaContext *context = g_ptr_array_index (priv->row_contexts, row);
3048 gtk_cell_area_context_allocate (context, item_width, sizes[row].minimum_size);
3049
3050 priv->height += priv->item_padding;
3051
3052 for (col = 0; col < n_columns && items; col++, items = items->next)
3053 {
3054 GtkIconViewItem *item = items->data;
3055
3056 item->cell_area.x = priv->margin + (col * 2 + 1) * priv->item_padding + col * (priv->column_spacing + item_width);
3057 item->cell_area.width = item_width;
3058 item->cell_area.y = priv->height;
3059 item->cell_area.height = sizes[row].minimum_size;
3060 item->row = row;
3061 item->col = col;
3062 if (rtl)
3063 {
3064 item->cell_area.x = priv->width - item_width - item->cell_area.x;
3065 item->col = n_columns - 1 - col;
3066 }
3067 }
3068
3069 priv->height += sizes[row].minimum_size + priv->item_padding + priv->row_spacing;
3070 }
3071
3072 priv->height -= priv->row_spacing;
3073 priv->height += priv->margin;
3074 priv->height = MAX (priv->height, gtk_widget_get_allocated_height (widget));
3075 }
3076
3077 static void
gtk_icon_view_invalidate_sizes(GtkIconView * icon_view)3078 gtk_icon_view_invalidate_sizes (GtkIconView *icon_view)
3079 {
3080 /* Clear all item sizes */
3081 g_list_foreach (icon_view->priv->items,
3082 (GFunc)gtk_icon_view_item_invalidate_size, NULL);
3083
3084 /* Re-layout the items */
3085 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
3086 }
3087
3088 static void
gtk_icon_view_item_invalidate_size(GtkIconViewItem * item)3089 gtk_icon_view_item_invalidate_size (GtkIconViewItem *item)
3090 {
3091 item->cell_area.width = -1;
3092 item->cell_area.height = -1;
3093 }
3094
3095 static void
gtk_icon_view_paint_item(GtkIconView * icon_view,cairo_t * cr,GtkIconViewItem * item,gint x,gint y,gboolean draw_focus)3096 gtk_icon_view_paint_item (GtkIconView *icon_view,
3097 cairo_t *cr,
3098 GtkIconViewItem *item,
3099 gint x,
3100 gint y,
3101 gboolean draw_focus)
3102 {
3103 GdkRectangle cell_area;
3104 GtkStateFlags state = 0;
3105 GtkCellRendererState flags = 0;
3106 GtkStyleContext *style_context;
3107 GtkWidget *widget = GTK_WIDGET (icon_view);
3108 GtkIconViewPrivate *priv = icon_view->priv;
3109 GtkCellAreaContext *context;
3110
3111 if (priv->model == NULL || item->cell_area.width <= 0 || item->cell_area.height <= 0)
3112 return;
3113
3114 _gtk_icon_view_set_cell_data (icon_view, item);
3115
3116 style_context = gtk_widget_get_style_context (widget);
3117 state = gtk_widget_get_state_flags (widget);
3118
3119 gtk_style_context_save (style_context);
3120 gtk_style_context_add_class (style_context, GTK_STYLE_CLASS_CELL);
3121
3122 state &= ~(GTK_STATE_FLAG_SELECTED | GTK_STATE_FLAG_PRELIGHT);
3123
3124 if ((state & GTK_STATE_FLAG_FOCUSED) &&
3125 item == icon_view->priv->cursor_item)
3126 flags |= GTK_CELL_RENDERER_FOCUSED;
3127
3128 if (item->selected)
3129 {
3130 state |= GTK_STATE_FLAG_SELECTED;
3131 flags |= GTK_CELL_RENDERER_SELECTED;
3132 }
3133
3134 if (item == priv->last_prelight)
3135 {
3136 state |= GTK_STATE_FLAG_PRELIGHT;
3137 flags |= GTK_CELL_RENDERER_PRELIT;
3138 }
3139
3140 gtk_style_context_set_state (style_context, state);
3141
3142 gtk_render_background (style_context, cr,
3143 x - priv->item_padding,
3144 y - priv->item_padding,
3145 item->cell_area.width + priv->item_padding * 2,
3146 item->cell_area.height + priv->item_padding * 2);
3147 gtk_render_frame (style_context, cr,
3148 x - priv->item_padding,
3149 y - priv->item_padding,
3150 item->cell_area.width + priv->item_padding * 2,
3151 item->cell_area.height + priv->item_padding * 2);
3152
3153 cell_area.x = x;
3154 cell_area.y = y;
3155 cell_area.width = item->cell_area.width;
3156 cell_area.height = item->cell_area.height;
3157
3158 context = g_ptr_array_index (priv->row_contexts, item->row);
3159 gtk_cell_area_render (priv->cell_area, context,
3160 widget, cr, &cell_area, &cell_area, flags,
3161 draw_focus);
3162
3163 gtk_style_context_restore (style_context);
3164 }
3165
3166 static void
gtk_icon_view_paint_rubberband(GtkIconView * icon_view,cairo_t * cr)3167 gtk_icon_view_paint_rubberband (GtkIconView *icon_view,
3168 cairo_t *cr)
3169 {
3170 GtkIconViewPrivate *priv = icon_view->priv;
3171 GtkStyleContext *context;
3172 GdkRectangle rect;
3173
3174 cairo_save (cr);
3175
3176 rect.x = MIN (priv->rubberband_x1, priv->rubberband_x2);
3177 rect.y = MIN (priv->rubberband_y1, priv->rubberband_y2);
3178 rect.width = ABS (priv->rubberband_x1 - priv->rubberband_x2) + 1;
3179 rect.height = ABS (priv->rubberband_y1 - priv->rubberband_y2) + 1;
3180
3181 context = gtk_widget_get_style_context (GTK_WIDGET (icon_view));
3182
3183 gtk_style_context_save_to_node (context, priv->rubberband_node);
3184
3185 gdk_cairo_rectangle (cr, &rect);
3186 cairo_clip (cr);
3187
3188 gtk_render_background (context, cr,
3189 rect.x, rect.y,
3190 rect.width, rect.height);
3191 gtk_render_frame (context, cr,
3192 rect.x, rect.y,
3193 rect.width, rect.height);
3194
3195 gtk_style_context_restore (context);
3196 cairo_restore (cr);
3197 }
3198
3199 static void
gtk_icon_view_queue_draw_path(GtkIconView * icon_view,GtkTreePath * path)3200 gtk_icon_view_queue_draw_path (GtkIconView *icon_view,
3201 GtkTreePath *path)
3202 {
3203 GList *l;
3204 gint index;
3205
3206 index = gtk_tree_path_get_indices (path)[0];
3207
3208 for (l = icon_view->priv->items; l; l = l->next)
3209 {
3210 GtkIconViewItem *item = l->data;
3211
3212 if (item->index == index)
3213 {
3214 gtk_icon_view_queue_draw_item (icon_view, item);
3215 break;
3216 }
3217 }
3218 }
3219
3220 static void
gtk_icon_view_queue_draw_item(GtkIconView * icon_view,GtkIconViewItem * item)3221 gtk_icon_view_queue_draw_item (GtkIconView *icon_view,
3222 GtkIconViewItem *item)
3223 {
3224 GdkRectangle rect;
3225 GdkRectangle *item_area = &item->cell_area;
3226
3227 rect.x = item_area->x - icon_view->priv->item_padding;
3228 rect.y = item_area->y - icon_view->priv->item_padding;
3229 rect.width = item_area->width + icon_view->priv->item_padding * 2;
3230 rect.height = item_area->height + icon_view->priv->item_padding * 2;
3231
3232 if (icon_view->priv->bin_window)
3233 gdk_window_invalidate_rect (icon_view->priv->bin_window, &rect, TRUE);
3234 }
3235
3236 void
_gtk_icon_view_set_cursor_item(GtkIconView * icon_view,GtkIconViewItem * item,GtkCellRenderer * cursor_cell)3237 _gtk_icon_view_set_cursor_item (GtkIconView *icon_view,
3238 GtkIconViewItem *item,
3239 GtkCellRenderer *cursor_cell)
3240 {
3241 AtkObject *obj;
3242 AtkObject *item_obj;
3243 AtkObject *cursor_item_obj;
3244
3245 /* When hitting this path from keynav, the focus cell is
3246 * already set, we dont need to notify the atk object
3247 * but we still need to queue the draw here (in the case
3248 * that the focus cell changes but not the cursor item).
3249 */
3250 gtk_icon_view_queue_draw_item (icon_view, item);
3251
3252 if (icon_view->priv->cursor_item == item &&
3253 (cursor_cell == NULL || cursor_cell == gtk_cell_area_get_focus_cell (icon_view->priv->cell_area)))
3254 return;
3255
3256 obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
3257 if (icon_view->priv->cursor_item != NULL)
3258 {
3259 gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
3260 if (obj != NULL)
3261 {
3262 cursor_item_obj = atk_object_ref_accessible_child (obj, icon_view->priv->cursor_item->index);
3263 if (cursor_item_obj != NULL)
3264 atk_object_notify_state_change (cursor_item_obj, ATK_STATE_FOCUSED, FALSE);
3265 }
3266 }
3267 icon_view->priv->cursor_item = item;
3268
3269 if (cursor_cell)
3270 gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cursor_cell);
3271 else
3272 {
3273 /* Make sure there is a cell in focus initially */
3274 if (!gtk_cell_area_get_focus_cell (icon_view->priv->cell_area))
3275 gtk_cell_area_focus (icon_view->priv->cell_area, GTK_DIR_TAB_FORWARD);
3276 }
3277
3278 /* Notify that accessible focus object has changed */
3279 item_obj = atk_object_ref_accessible_child (obj, item->index);
3280
3281 if (item_obj != NULL)
3282 {
3283 G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
3284 atk_focus_tracker_notify (item_obj);
3285 G_GNUC_END_IGNORE_DEPRECATIONS;
3286 atk_object_notify_state_change (item_obj, ATK_STATE_FOCUSED, TRUE);
3287 g_object_unref (item_obj);
3288 }
3289 }
3290
3291
3292 static GtkIconViewItem *
gtk_icon_view_item_new(void)3293 gtk_icon_view_item_new (void)
3294 {
3295 GtkIconViewItem *item;
3296
3297 item = g_slice_new0 (GtkIconViewItem);
3298
3299 item->cell_area.width = -1;
3300 item->cell_area.height = -1;
3301
3302 return item;
3303 }
3304
3305 static void
gtk_icon_view_item_free(GtkIconViewItem * item)3306 gtk_icon_view_item_free (GtkIconViewItem *item)
3307 {
3308 g_return_if_fail (item != NULL);
3309
3310 g_slice_free (GtkIconViewItem, item);
3311 }
3312
3313 GtkIconViewItem *
_gtk_icon_view_get_item_at_coords(GtkIconView * icon_view,gint x,gint y,gboolean only_in_cell,GtkCellRenderer ** cell_at_pos)3314 _gtk_icon_view_get_item_at_coords (GtkIconView *icon_view,
3315 gint x,
3316 gint y,
3317 gboolean only_in_cell,
3318 GtkCellRenderer **cell_at_pos)
3319 {
3320 GList *items;
3321
3322 if (cell_at_pos)
3323 *cell_at_pos = NULL;
3324
3325 for (items = icon_view->priv->items; items; items = items->next)
3326 {
3327 GtkIconViewItem *item = items->data;
3328 GdkRectangle *item_area = &item->cell_area;
3329
3330 if (x >= item_area->x - icon_view->priv->column_spacing/2 &&
3331 x <= item_area->x + item_area->width + icon_view->priv->column_spacing/2 &&
3332 y >= item_area->y - icon_view->priv->row_spacing/2 &&
3333 y <= item_area->y + item_area->height + icon_view->priv->row_spacing/2)
3334 {
3335 if (only_in_cell || cell_at_pos)
3336 {
3337 GtkCellRenderer *cell = NULL;
3338 GtkCellAreaContext *context;
3339
3340 context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
3341 _gtk_icon_view_set_cell_data (icon_view, item);
3342
3343 if (x >= item_area->x && x <= item_area->x + item_area->width &&
3344 y >= item_area->y && y <= item_area->y + item_area->height)
3345 cell = gtk_cell_area_get_cell_at_position (icon_view->priv->cell_area, context,
3346 GTK_WIDGET (icon_view),
3347 item_area,
3348 x, y, NULL);
3349
3350 if (cell_at_pos)
3351 *cell_at_pos = cell;
3352
3353 if (only_in_cell)
3354 return cell != NULL ? item : NULL;
3355 else
3356 return item;
3357 }
3358 return item;
3359 }
3360 }
3361 return NULL;
3362 }
3363
3364 void
_gtk_icon_view_select_item(GtkIconView * icon_view,GtkIconViewItem * item)3365 _gtk_icon_view_select_item (GtkIconView *icon_view,
3366 GtkIconViewItem *item)
3367 {
3368 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
3369 g_return_if_fail (item != NULL);
3370
3371 if (item->selected)
3372 return;
3373
3374 if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
3375 return;
3376 else if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3377 gtk_icon_view_unselect_all_internal (icon_view);
3378
3379 item->selected = TRUE;
3380
3381 gtk_icon_view_item_selected_changed (icon_view, item);
3382 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3383
3384 gtk_icon_view_queue_draw_item (icon_view, item);
3385 }
3386
3387
3388 void
_gtk_icon_view_unselect_item(GtkIconView * icon_view,GtkIconViewItem * item)3389 _gtk_icon_view_unselect_item (GtkIconView *icon_view,
3390 GtkIconViewItem *item)
3391 {
3392 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
3393 g_return_if_fail (item != NULL);
3394
3395 if (!item->selected)
3396 return;
3397
3398 if (icon_view->priv->selection_mode == GTK_SELECTION_NONE ||
3399 icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
3400 return;
3401
3402 item->selected = FALSE;
3403
3404 gtk_icon_view_item_selected_changed (icon_view, item);
3405 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3406
3407 gtk_icon_view_queue_draw_item (icon_view, item);
3408 }
3409
3410 static void
verify_items(GtkIconView * icon_view)3411 verify_items (GtkIconView *icon_view)
3412 {
3413 GList *items;
3414 int i = 0;
3415
3416 for (items = icon_view->priv->items; items; items = items->next)
3417 {
3418 GtkIconViewItem *item = items->data;
3419
3420 if (item->index != i)
3421 g_error ("List item does not match its index: "
3422 "item index %d and list index %d\n", item->index, i);
3423
3424 i++;
3425 }
3426 }
3427
3428 static void
gtk_icon_view_row_changed(GtkTreeModel * model,GtkTreePath * path,GtkTreeIter * iter,gpointer data)3429 gtk_icon_view_row_changed (GtkTreeModel *model,
3430 GtkTreePath *path,
3431 GtkTreeIter *iter,
3432 gpointer data)
3433 {
3434 GtkIconView *icon_view = GTK_ICON_VIEW (data);
3435
3436 /* ignore changes in branches */
3437 if (gtk_tree_path_get_depth (path) > 1)
3438 return;
3439
3440 /* An icon view subclass might add it's own model and populate
3441 * things at init() time instead of waiting for the constructor()
3442 * to be called
3443 */
3444 if (icon_view->priv->cell_area)
3445 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
3446
3447 /* Here we can use a "grow-only" strategy for optimization
3448 * and only invalidate a single item and queue a relayout
3449 * instead of invalidating the whole thing.
3450 *
3451 * For now GtkIconView still cant deal with huge models
3452 * so just invalidate the whole thing when the model
3453 * changes.
3454 */
3455 gtk_icon_view_invalidate_sizes (icon_view);
3456
3457 verify_items (icon_view);
3458 }
3459
3460 static void
gtk_icon_view_row_inserted(GtkTreeModel * model,GtkTreePath * path,GtkTreeIter * iter,gpointer data)3461 gtk_icon_view_row_inserted (GtkTreeModel *model,
3462 GtkTreePath *path,
3463 GtkTreeIter *iter,
3464 gpointer data)
3465 {
3466 GtkIconView *icon_view = GTK_ICON_VIEW (data);
3467 gint index;
3468 GtkIconViewItem *item;
3469 GList *list;
3470
3471 /* ignore changes in branches */
3472 if (gtk_tree_path_get_depth (path) > 1)
3473 return;
3474
3475 gtk_tree_model_ref_node (model, iter);
3476
3477 index = gtk_tree_path_get_indices(path)[0];
3478
3479 item = gtk_icon_view_item_new ();
3480
3481 item->index = index;
3482
3483 /* FIXME: We can be more efficient here,
3484 we can store a tail pointer and use that when
3485 appending (which is a rather common operation)
3486 */
3487 icon_view->priv->items = g_list_insert (icon_view->priv->items,
3488 item, index);
3489
3490 list = g_list_nth (icon_view->priv->items, index + 1);
3491 for (; list; list = list->next)
3492 {
3493 item = list->data;
3494
3495 item->index++;
3496 }
3497
3498 verify_items (icon_view);
3499
3500 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
3501 }
3502
3503 static void
gtk_icon_view_row_deleted(GtkTreeModel * model,GtkTreePath * path,gpointer data)3504 gtk_icon_view_row_deleted (GtkTreeModel *model,
3505 GtkTreePath *path,
3506 gpointer data)
3507 {
3508 GtkIconView *icon_view = GTK_ICON_VIEW (data);
3509 gint index;
3510 GtkIconViewItem *item;
3511 GList *list, *next;
3512 gboolean emit = FALSE;
3513 GtkTreeIter iter;
3514
3515 /* ignore changes in branches */
3516 if (gtk_tree_path_get_depth (path) > 1)
3517 return;
3518
3519 if (gtk_tree_model_get_iter (model, &iter, path))
3520 gtk_tree_model_unref_node (model, &iter);
3521
3522 index = gtk_tree_path_get_indices(path)[0];
3523
3524 list = g_list_nth (icon_view->priv->items, index);
3525 item = list->data;
3526
3527 if (icon_view->priv->cell_area)
3528 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
3529
3530 if (item == icon_view->priv->anchor_item)
3531 icon_view->priv->anchor_item = NULL;
3532
3533 if (item == icon_view->priv->cursor_item)
3534 icon_view->priv->cursor_item = NULL;
3535
3536 if (item == icon_view->priv->last_prelight)
3537 icon_view->priv->last_prelight = NULL;
3538
3539 if (item->selected)
3540 emit = TRUE;
3541
3542 gtk_icon_view_item_free (item);
3543
3544 for (next = list->next; next; next = next->next)
3545 {
3546 item = next->data;
3547
3548 item->index--;
3549 }
3550
3551 icon_view->priv->items = g_list_delete_link (icon_view->priv->items, list);
3552
3553 verify_items (icon_view);
3554
3555 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
3556
3557 if (emit)
3558 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3559 }
3560
3561 static void
gtk_icon_view_rows_reordered(GtkTreeModel * model,GtkTreePath * parent,GtkTreeIter * iter,gint * new_order,gpointer data)3562 gtk_icon_view_rows_reordered (GtkTreeModel *model,
3563 GtkTreePath *parent,
3564 GtkTreeIter *iter,
3565 gint *new_order,
3566 gpointer data)
3567 {
3568 GtkIconView *icon_view = GTK_ICON_VIEW (data);
3569 int i;
3570 int length;
3571 GList *items = NULL, *list;
3572 GtkIconViewItem **item_array;
3573 gint *order;
3574
3575 /* ignore changes in branches */
3576 if (iter != NULL)
3577 return;
3578
3579 if (icon_view->priv->cell_area)
3580 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
3581
3582 length = gtk_tree_model_iter_n_children (model, NULL);
3583
3584 order = g_new (gint, length);
3585 for (i = 0; i < length; i++)
3586 order [new_order[i]] = i;
3587
3588 item_array = g_new (GtkIconViewItem *, length);
3589 for (i = 0, list = icon_view->priv->items; list != NULL; list = list->next, i++)
3590 item_array[order[i]] = list->data;
3591 g_free (order);
3592
3593 for (i = length - 1; i >= 0; i--)
3594 {
3595 item_array[i]->index = i;
3596 items = g_list_prepend (items, item_array[i]);
3597 }
3598
3599 g_free (item_array);
3600 g_list_free (icon_view->priv->items);
3601 icon_view->priv->items = items;
3602
3603 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
3604
3605 verify_items (icon_view);
3606 }
3607
3608 static void
gtk_icon_view_build_items(GtkIconView * icon_view)3609 gtk_icon_view_build_items (GtkIconView *icon_view)
3610 {
3611 GtkTreeIter iter;
3612 int i;
3613 GList *items = NULL;
3614
3615 if (!gtk_tree_model_get_iter_first (icon_view->priv->model,
3616 &iter))
3617 return;
3618
3619 i = 0;
3620
3621 do
3622 {
3623 GtkIconViewItem *item = gtk_icon_view_item_new ();
3624
3625 item->index = i;
3626
3627 i++;
3628
3629 items = g_list_prepend (items, item);
3630
3631 } while (gtk_tree_model_iter_next (icon_view->priv->model, &iter));
3632
3633 icon_view->priv->items = g_list_reverse (items);
3634 }
3635
3636 static void
gtk_icon_view_add_move_binding(GtkBindingSet * binding_set,guint keyval,guint modmask,GtkMovementStep step,gint count)3637 gtk_icon_view_add_move_binding (GtkBindingSet *binding_set,
3638 guint keyval,
3639 guint modmask,
3640 GtkMovementStep step,
3641 gint count)
3642 {
3643
3644 gtk_binding_entry_add_signal (binding_set, keyval, modmask,
3645 I_("move-cursor"), 2,
3646 G_TYPE_ENUM, step,
3647 G_TYPE_INT, count);
3648
3649 gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
3650 "move-cursor", 2,
3651 G_TYPE_ENUM, step,
3652 G_TYPE_INT, count);
3653
3654 if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
3655 return;
3656
3657 gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
3658 "move-cursor", 2,
3659 G_TYPE_ENUM, step,
3660 G_TYPE_INT, count);
3661
3662 gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
3663 "move-cursor", 2,
3664 G_TYPE_ENUM, step,
3665 G_TYPE_INT, count);
3666 }
3667
3668 static gboolean
gtk_icon_view_real_move_cursor(GtkIconView * icon_view,GtkMovementStep step,gint count)3669 gtk_icon_view_real_move_cursor (GtkIconView *icon_view,
3670 GtkMovementStep step,
3671 gint count)
3672 {
3673 GdkModifierType state;
3674
3675 g_return_val_if_fail (GTK_ICON_VIEW (icon_view), FALSE);
3676 g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
3677 step == GTK_MOVEMENT_VISUAL_POSITIONS ||
3678 step == GTK_MOVEMENT_DISPLAY_LINES ||
3679 step == GTK_MOVEMENT_PAGES ||
3680 step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
3681
3682 if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
3683 return FALSE;
3684
3685 gtk_cell_area_stop_editing (icon_view->priv->cell_area, FALSE);
3686 gtk_widget_grab_focus (GTK_WIDGET (icon_view));
3687
3688 if (gtk_get_current_event_state (&state))
3689 {
3690 GdkModifierType extend_mod_mask;
3691 GdkModifierType modify_mod_mask;
3692
3693 extend_mod_mask =
3694 gtk_widget_get_modifier_mask (GTK_WIDGET (icon_view),
3695 GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3696 modify_mod_mask =
3697 gtk_widget_get_modifier_mask (GTK_WIDGET (icon_view),
3698 GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3699
3700 if ((state & modify_mod_mask) == modify_mod_mask)
3701 icon_view->priv->modify_selection_pressed = TRUE;
3702 if ((state & extend_mod_mask) == extend_mod_mask)
3703 icon_view->priv->extend_selection_pressed = TRUE;
3704 }
3705 /* else we assume not pressed */
3706
3707 switch (step)
3708 {
3709 case GTK_MOVEMENT_LOGICAL_POSITIONS:
3710 case GTK_MOVEMENT_VISUAL_POSITIONS:
3711 gtk_icon_view_move_cursor_left_right (icon_view, count);
3712 break;
3713 case GTK_MOVEMENT_DISPLAY_LINES:
3714 gtk_icon_view_move_cursor_up_down (icon_view, count);
3715 break;
3716 case GTK_MOVEMENT_PAGES:
3717 gtk_icon_view_move_cursor_page_up_down (icon_view, count);
3718 break;
3719 case GTK_MOVEMENT_BUFFER_ENDS:
3720 gtk_icon_view_move_cursor_start_end (icon_view, count);
3721 break;
3722 default:
3723 g_assert_not_reached ();
3724 }
3725
3726 icon_view->priv->modify_selection_pressed = FALSE;
3727 icon_view->priv->extend_selection_pressed = FALSE;
3728
3729 icon_view->priv->draw_focus = TRUE;
3730
3731 return TRUE;
3732 }
3733
3734 static GtkIconViewItem *
find_item(GtkIconView * icon_view,GtkIconViewItem * current,gint row_ofs,gint col_ofs)3735 find_item (GtkIconView *icon_view,
3736 GtkIconViewItem *current,
3737 gint row_ofs,
3738 gint col_ofs)
3739 {
3740 gint row, col;
3741 GList *items;
3742 GtkIconViewItem *item;
3743
3744 /* FIXME: this could be more efficient
3745 */
3746 row = current->row + row_ofs;
3747 col = current->col + col_ofs;
3748
3749 for (items = icon_view->priv->items; items; items = items->next)
3750 {
3751 item = items->data;
3752 if (item->row == row && item->col == col)
3753 return item;
3754 }
3755
3756 return NULL;
3757 }
3758
3759 static GtkIconViewItem *
find_item_page_up_down(GtkIconView * icon_view,GtkIconViewItem * current,gint count)3760 find_item_page_up_down (GtkIconView *icon_view,
3761 GtkIconViewItem *current,
3762 gint count)
3763 {
3764 GList *item, *next;
3765 gint y, col;
3766
3767 col = current->col;
3768 y = current->cell_area.y + count * gtk_adjustment_get_page_size (icon_view->priv->vadjustment);
3769
3770 item = g_list_find (icon_view->priv->items, current);
3771 if (count > 0)
3772 {
3773 while (item)
3774 {
3775 for (next = item->next; next; next = next->next)
3776 {
3777 if (((GtkIconViewItem *)next->data)->col == col)
3778 break;
3779 }
3780 if (!next || ((GtkIconViewItem *)next->data)->cell_area.y > y)
3781 break;
3782
3783 item = next;
3784 }
3785 }
3786 else
3787 {
3788 while (item)
3789 {
3790 for (next = item->prev; next; next = next->prev)
3791 {
3792 if (((GtkIconViewItem *)next->data)->col == col)
3793 break;
3794 }
3795 if (!next || ((GtkIconViewItem *)next->data)->cell_area.y < y)
3796 break;
3797
3798 item = next;
3799 }
3800 }
3801
3802 if (item)
3803 return item->data;
3804
3805 return NULL;
3806 }
3807
3808 static gboolean
gtk_icon_view_select_all_between(GtkIconView * icon_view,GtkIconViewItem * anchor,GtkIconViewItem * cursor)3809 gtk_icon_view_select_all_between (GtkIconView *icon_view,
3810 GtkIconViewItem *anchor,
3811 GtkIconViewItem *cursor)
3812 {
3813 GList *items;
3814 GtkIconViewItem *item;
3815 gint row1, row2, col1, col2;
3816 gboolean dirty = FALSE;
3817
3818 if (anchor->row < cursor->row)
3819 {
3820 row1 = anchor->row;
3821 row2 = cursor->row;
3822 }
3823 else
3824 {
3825 row1 = cursor->row;
3826 row2 = anchor->row;
3827 }
3828
3829 if (anchor->col < cursor->col)
3830 {
3831 col1 = anchor->col;
3832 col2 = cursor->col;
3833 }
3834 else
3835 {
3836 col1 = cursor->col;
3837 col2 = anchor->col;
3838 }
3839
3840 for (items = icon_view->priv->items; items; items = items->next)
3841 {
3842 item = items->data;
3843
3844 if (row1 <= item->row && item->row <= row2 &&
3845 col1 <= item->col && item->col <= col2)
3846 {
3847 if (!item->selected)
3848 {
3849 dirty = TRUE;
3850 item->selected = TRUE;
3851 gtk_icon_view_item_selected_changed (icon_view, item);
3852 }
3853 gtk_icon_view_queue_draw_item (icon_view, item);
3854 }
3855 }
3856
3857 return dirty;
3858 }
3859
3860 static void
gtk_icon_view_move_cursor_up_down(GtkIconView * icon_view,gint count)3861 gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
3862 gint count)
3863 {
3864 GtkIconViewItem *item;
3865 GtkCellRenderer *cell = NULL;
3866 gboolean dirty = FALSE;
3867 gint step;
3868 GtkDirectionType direction;
3869
3870 if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
3871 return;
3872
3873 direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
3874
3875 if (!icon_view->priv->cursor_item)
3876 {
3877 GList *list;
3878
3879 if (count > 0)
3880 list = icon_view->priv->items;
3881 else
3882 list = g_list_last (icon_view->priv->items);
3883
3884 if (list)
3885 {
3886 item = list->data;
3887
3888 /* Give focus to the first cell initially */
3889 _gtk_icon_view_set_cell_data (icon_view, item);
3890 gtk_cell_area_focus (icon_view->priv->cell_area, direction);
3891 }
3892 else
3893 {
3894 item = NULL;
3895 }
3896 }
3897 else
3898 {
3899 item = icon_view->priv->cursor_item;
3900 step = count > 0 ? 1 : -1;
3901
3902 /* Save the current focus cell in case we hit the edge */
3903 cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
3904
3905 while (item)
3906 {
3907 _gtk_icon_view_set_cell_data (icon_view, item);
3908
3909 if (gtk_cell_area_focus (icon_view->priv->cell_area, direction))
3910 break;
3911
3912 item = find_item (icon_view, item, step, 0);
3913 }
3914 }
3915
3916 if (!item)
3917 {
3918 if (!gtk_widget_keynav_failed (GTK_WIDGET (icon_view), direction))
3919 {
3920 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (icon_view));
3921 if (toplevel)
3922 gtk_widget_child_focus (toplevel,
3923 direction == GTK_DIR_UP ?
3924 GTK_DIR_TAB_BACKWARD :
3925 GTK_DIR_TAB_FORWARD);
3926
3927 }
3928
3929 gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cell);
3930 return;
3931 }
3932
3933 if (icon_view->priv->modify_selection_pressed ||
3934 !icon_view->priv->extend_selection_pressed ||
3935 !icon_view->priv->anchor_item ||
3936 icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3937 icon_view->priv->anchor_item = item;
3938
3939 cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
3940 _gtk_icon_view_set_cursor_item (icon_view, item, cell);
3941
3942 if (!icon_view->priv->modify_selection_pressed &&
3943 icon_view->priv->selection_mode != GTK_SELECTION_NONE)
3944 {
3945 dirty = gtk_icon_view_unselect_all_internal (icon_view);
3946 dirty = gtk_icon_view_select_all_between (icon_view,
3947 icon_view->priv->anchor_item,
3948 item) || dirty;
3949 }
3950
3951 gtk_icon_view_scroll_to_item (icon_view, item);
3952
3953 if (dirty)
3954 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
3955 }
3956
3957 static void
gtk_icon_view_move_cursor_page_up_down(GtkIconView * icon_view,gint count)3958 gtk_icon_view_move_cursor_page_up_down (GtkIconView *icon_view,
3959 gint count)
3960 {
3961 GtkIconViewItem *item;
3962 gboolean dirty = FALSE;
3963
3964 if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
3965 return;
3966
3967 if (!icon_view->priv->cursor_item)
3968 {
3969 GList *list;
3970
3971 if (count > 0)
3972 list = icon_view->priv->items;
3973 else
3974 list = g_list_last (icon_view->priv->items);
3975
3976 item = list ? list->data : NULL;
3977 }
3978 else
3979 item = find_item_page_up_down (icon_view,
3980 icon_view->priv->cursor_item,
3981 count);
3982
3983 if (item == icon_view->priv->cursor_item)
3984 gtk_widget_error_bell (GTK_WIDGET (icon_view));
3985
3986 if (!item)
3987 return;
3988
3989 if (icon_view->priv->modify_selection_pressed ||
3990 !icon_view->priv->extend_selection_pressed ||
3991 !icon_view->priv->anchor_item ||
3992 icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
3993 icon_view->priv->anchor_item = item;
3994
3995 _gtk_icon_view_set_cursor_item (icon_view, item, NULL);
3996
3997 if (!icon_view->priv->modify_selection_pressed &&
3998 icon_view->priv->selection_mode != GTK_SELECTION_NONE)
3999 {
4000 dirty = gtk_icon_view_unselect_all_internal (icon_view);
4001 dirty = gtk_icon_view_select_all_between (icon_view,
4002 icon_view->priv->anchor_item,
4003 item) || dirty;
4004 }
4005
4006 gtk_icon_view_scroll_to_item (icon_view, item);
4007
4008 if (dirty)
4009 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
4010 }
4011
4012 static void
gtk_icon_view_move_cursor_left_right(GtkIconView * icon_view,gint count)4013 gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
4014 gint count)
4015 {
4016 GtkIconViewItem *item;
4017 GtkCellRenderer *cell = NULL;
4018 gboolean dirty = FALSE;
4019 gint step;
4020 GtkDirectionType direction;
4021
4022 if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
4023 return;
4024
4025 direction = count < 0 ? GTK_DIR_LEFT : GTK_DIR_RIGHT;
4026
4027 if (!icon_view->priv->cursor_item)
4028 {
4029 GList *list;
4030
4031 if (count > 0)
4032 list = icon_view->priv->items;
4033 else
4034 list = g_list_last (icon_view->priv->items);
4035
4036 if (list)
4037 {
4038 item = list->data;
4039
4040 /* Give focus to the first cell initially */
4041 _gtk_icon_view_set_cell_data (icon_view, item);
4042 gtk_cell_area_focus (icon_view->priv->cell_area, direction);
4043 }
4044 else
4045 {
4046 item = NULL;
4047 }
4048 }
4049 else
4050 {
4051 item = icon_view->priv->cursor_item;
4052 step = count > 0 ? 1 : -1;
4053
4054 /* Save the current focus cell in case we hit the edge */
4055 cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
4056
4057 while (item)
4058 {
4059 _gtk_icon_view_set_cell_data (icon_view, item);
4060
4061 if (gtk_cell_area_focus (icon_view->priv->cell_area, direction))
4062 break;
4063
4064 item = find_item (icon_view, item, 0, step);
4065 }
4066 }
4067
4068 if (!item)
4069 {
4070 if (!gtk_widget_keynav_failed (GTK_WIDGET (icon_view), direction))
4071 {
4072 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (icon_view));
4073 if (toplevel)
4074 gtk_widget_child_focus (toplevel,
4075 direction == GTK_DIR_LEFT ?
4076 GTK_DIR_TAB_BACKWARD :
4077 GTK_DIR_TAB_FORWARD);
4078
4079 }
4080
4081 gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cell);
4082 return;
4083 }
4084
4085 if (icon_view->priv->modify_selection_pressed ||
4086 !icon_view->priv->extend_selection_pressed ||
4087 !icon_view->priv->anchor_item ||
4088 icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
4089 icon_view->priv->anchor_item = item;
4090
4091 cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
4092 _gtk_icon_view_set_cursor_item (icon_view, item, cell);
4093
4094 if (!icon_view->priv->modify_selection_pressed &&
4095 icon_view->priv->selection_mode != GTK_SELECTION_NONE)
4096 {
4097 dirty = gtk_icon_view_unselect_all_internal (icon_view);
4098 dirty = gtk_icon_view_select_all_between (icon_view,
4099 icon_view->priv->anchor_item,
4100 item) || dirty;
4101 }
4102
4103 gtk_icon_view_scroll_to_item (icon_view, item);
4104
4105 if (dirty)
4106 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
4107 }
4108
4109 static void
gtk_icon_view_move_cursor_start_end(GtkIconView * icon_view,gint count)4110 gtk_icon_view_move_cursor_start_end (GtkIconView *icon_view,
4111 gint count)
4112 {
4113 GtkIconViewItem *item;
4114 GList *list;
4115 gboolean dirty = FALSE;
4116
4117 if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
4118 return;
4119
4120 if (count < 0)
4121 list = icon_view->priv->items;
4122 else
4123 list = g_list_last (icon_view->priv->items);
4124
4125 item = list ? list->data : NULL;
4126
4127 if (item == icon_view->priv->cursor_item)
4128 gtk_widget_error_bell (GTK_WIDGET (icon_view));
4129
4130 if (!item)
4131 return;
4132
4133 if (icon_view->priv->modify_selection_pressed ||
4134 !icon_view->priv->extend_selection_pressed ||
4135 !icon_view->priv->anchor_item ||
4136 icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
4137 icon_view->priv->anchor_item = item;
4138
4139 _gtk_icon_view_set_cursor_item (icon_view, item, NULL);
4140
4141 if (!icon_view->priv->modify_selection_pressed &&
4142 icon_view->priv->selection_mode != GTK_SELECTION_NONE)
4143 {
4144 dirty = gtk_icon_view_unselect_all_internal (icon_view);
4145 dirty = gtk_icon_view_select_all_between (icon_view,
4146 icon_view->priv->anchor_item,
4147 item) || dirty;
4148 }
4149
4150 gtk_icon_view_scroll_to_item (icon_view, item);
4151
4152 if (dirty)
4153 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
4154 }
4155
4156 /**
4157 * gtk_icon_view_scroll_to_path:
4158 * @icon_view: A #GtkIconView.
4159 * @path: The path of the item to move to.
4160 * @use_align: whether to use alignment arguments, or %FALSE.
4161 * @row_align: The vertical alignment of the item specified by @path.
4162 * @col_align: The horizontal alignment of the item specified by @path.
4163 *
4164 * Moves the alignments of @icon_view to the position specified by @path.
4165 * @row_align determines where the row is placed, and @col_align determines
4166 * where @column is placed. Both are expected to be between 0.0 and 1.0.
4167 * 0.0 means left/top alignment, 1.0 means right/bottom alignment, 0.5 means
4168 * center.
4169 *
4170 * If @use_align is %FALSE, then the alignment arguments are ignored, and the
4171 * tree does the minimum amount of work to scroll the item onto the screen.
4172 * This means that the item will be scrolled to the edge closest to its current
4173 * position. If the item is currently visible on the screen, nothing is done.
4174 *
4175 * This function only works if the model is set, and @path is a valid row on
4176 * the model. If the model changes before the @icon_view is realized, the
4177 * centered path will be modified to reflect this change.
4178 *
4179 * Since: 2.8
4180 **/
4181 void
gtk_icon_view_scroll_to_path(GtkIconView * icon_view,GtkTreePath * path,gboolean use_align,gfloat row_align,gfloat col_align)4182 gtk_icon_view_scroll_to_path (GtkIconView *icon_view,
4183 GtkTreePath *path,
4184 gboolean use_align,
4185 gfloat row_align,
4186 gfloat col_align)
4187 {
4188 GtkIconViewItem *item = NULL;
4189 GtkWidget *widget;
4190
4191 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4192 g_return_if_fail (path != NULL);
4193 g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
4194 g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
4195
4196 widget = GTK_WIDGET (icon_view);
4197
4198 if (gtk_tree_path_get_depth (path) > 0)
4199 item = g_list_nth_data (icon_view->priv->items,
4200 gtk_tree_path_get_indices(path)[0]);
4201
4202 if (!item || item->cell_area.width < 0 ||
4203 !gtk_widget_get_realized (widget))
4204 {
4205 if (icon_view->priv->scroll_to_path)
4206 gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
4207
4208 icon_view->priv->scroll_to_path = NULL;
4209
4210 if (path)
4211 icon_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view), icon_view->priv->model, path);
4212
4213 icon_view->priv->scroll_to_use_align = use_align;
4214 icon_view->priv->scroll_to_row_align = row_align;
4215 icon_view->priv->scroll_to_col_align = col_align;
4216
4217 return;
4218 }
4219
4220 if (use_align)
4221 {
4222 GtkAllocation allocation;
4223 gint x, y;
4224 gfloat offset;
4225 GdkRectangle item_area =
4226 {
4227 item->cell_area.x - icon_view->priv->item_padding,
4228 item->cell_area.y - icon_view->priv->item_padding,
4229 item->cell_area.width + icon_view->priv->item_padding * 2,
4230 item->cell_area.height + icon_view->priv->item_padding * 2
4231 };
4232
4233 gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4234
4235 gtk_widget_get_allocation (widget, &allocation);
4236
4237 offset = y + item_area.y - row_align * (allocation.height - item_area.height);
4238
4239 gtk_adjustment_set_value (icon_view->priv->vadjustment,
4240 gtk_adjustment_get_value (icon_view->priv->vadjustment) + offset);
4241
4242 offset = x + item_area.x - col_align * (allocation.width - item_area.width);
4243
4244 gtk_adjustment_set_value (icon_view->priv->hadjustment,
4245 gtk_adjustment_get_value (icon_view->priv->hadjustment) + offset);
4246 }
4247 else
4248 gtk_icon_view_scroll_to_item (icon_view, item);
4249 }
4250
4251
4252 static void
gtk_icon_view_scroll_to_item(GtkIconView * icon_view,GtkIconViewItem * item)4253 gtk_icon_view_scroll_to_item (GtkIconView *icon_view,
4254 GtkIconViewItem *item)
4255 {
4256 GtkIconViewPrivate *priv = icon_view->priv;
4257 GtkWidget *widget = GTK_WIDGET (icon_view);
4258 GtkAdjustment *hadj, *vadj;
4259 GtkAllocation allocation;
4260 gint x, y;
4261 GdkRectangle item_area;
4262
4263 item_area.x = item->cell_area.x - priv->item_padding;
4264 item_area.y = item->cell_area.y - priv->item_padding;
4265 item_area.width = item->cell_area.width + priv->item_padding * 2;
4266 item_area.height = item->cell_area.height + priv->item_padding * 2;
4267
4268 gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4269 gtk_widget_get_allocation (widget, &allocation);
4270
4271 hadj = icon_view->priv->hadjustment;
4272 vadj = icon_view->priv->vadjustment;
4273
4274 if (y + item_area.y < 0)
4275 gtk_adjustment_animate_to_value (vadj,
4276 gtk_adjustment_get_value (vadj)
4277 + y + item_area.y);
4278 else if (y + item_area.y + item_area.height > allocation.height)
4279 gtk_adjustment_animate_to_value (vadj,
4280 gtk_adjustment_get_value (vadj)
4281 + y + item_area.y + item_area.height - allocation.height);
4282
4283 if (x + item_area.x < 0)
4284 gtk_adjustment_animate_to_value (hadj,
4285 gtk_adjustment_get_value (hadj)
4286 + x + item_area.x);
4287 else if (x + item_area.x + item_area.width > allocation.width)
4288 gtk_adjustment_animate_to_value (hadj,
4289 gtk_adjustment_get_value (hadj)
4290 + x + item_area.x + item_area.width - allocation.width);
4291 }
4292
4293 /* GtkCellLayout implementation */
4294
4295 static void
gtk_icon_view_ensure_cell_area(GtkIconView * icon_view,GtkCellArea * cell_area)4296 gtk_icon_view_ensure_cell_area (GtkIconView *icon_view,
4297 GtkCellArea *cell_area)
4298 {
4299 GtkIconViewPrivate *priv = icon_view->priv;
4300
4301 if (priv->cell_area)
4302 return;
4303
4304 if (cell_area)
4305 priv->cell_area = cell_area;
4306 else
4307 priv->cell_area = gtk_cell_area_box_new ();
4308
4309 g_object_ref_sink (priv->cell_area);
4310
4311 if (GTK_IS_ORIENTABLE (priv->cell_area))
4312 gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->cell_area), priv->item_orientation);
4313
4314 priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
4315
4316 priv->add_editable_id =
4317 g_signal_connect (priv->cell_area, "add-editable",
4318 G_CALLBACK (gtk_icon_view_add_editable), icon_view);
4319 priv->remove_editable_id =
4320 g_signal_connect (priv->cell_area, "remove-editable",
4321 G_CALLBACK (gtk_icon_view_remove_editable), icon_view);
4322
4323 update_text_cell (icon_view);
4324 update_pixbuf_cell (icon_view);
4325 }
4326
4327 static GtkCellArea *
gtk_icon_view_cell_layout_get_area(GtkCellLayout * cell_layout)4328 gtk_icon_view_cell_layout_get_area (GtkCellLayout *cell_layout)
4329 {
4330 GtkIconView *icon_view = GTK_ICON_VIEW (cell_layout);
4331 GtkIconViewPrivate *priv = icon_view->priv;
4332
4333 if (G_UNLIKELY (!priv->cell_area))
4334 gtk_icon_view_ensure_cell_area (icon_view, NULL);
4335
4336 return icon_view->priv->cell_area;
4337 }
4338
4339 void
_gtk_icon_view_set_cell_data(GtkIconView * icon_view,GtkIconViewItem * item)4340 _gtk_icon_view_set_cell_data (GtkIconView *icon_view,
4341 GtkIconViewItem *item)
4342 {
4343 GtkTreeIter iter;
4344 GtkTreePath *path;
4345
4346 path = gtk_tree_path_new_from_indices (item->index, -1);
4347 if (!gtk_tree_model_get_iter (icon_view->priv->model, &iter, path))
4348 return;
4349 gtk_tree_path_free (path);
4350
4351 gtk_cell_area_apply_attributes (icon_view->priv->cell_area,
4352 icon_view->priv->model,
4353 &iter, FALSE, FALSE);
4354 }
4355
4356
4357
4358 /* Public API */
4359
4360
4361 /**
4362 * gtk_icon_view_new:
4363 *
4364 * Creates a new #GtkIconView widget
4365 *
4366 * Returns: A newly created #GtkIconView widget
4367 *
4368 * Since: 2.6
4369 **/
4370 GtkWidget *
gtk_icon_view_new(void)4371 gtk_icon_view_new (void)
4372 {
4373 return g_object_new (GTK_TYPE_ICON_VIEW, NULL);
4374 }
4375
4376 /**
4377 * gtk_icon_view_new_with_area:
4378 * @area: the #GtkCellArea to use to layout cells
4379 *
4380 * Creates a new #GtkIconView widget using the
4381 * specified @area to layout cells inside the icons.
4382 *
4383 * Returns: A newly created #GtkIconView widget
4384 *
4385 * Since: 3.0
4386 **/
4387 GtkWidget *
gtk_icon_view_new_with_area(GtkCellArea * area)4388 gtk_icon_view_new_with_area (GtkCellArea *area)
4389 {
4390 return g_object_new (GTK_TYPE_ICON_VIEW, "cell-area", area, NULL);
4391 }
4392
4393 /**
4394 * gtk_icon_view_new_with_model:
4395 * @model: The model.
4396 *
4397 * Creates a new #GtkIconView widget with the model @model.
4398 *
4399 * Returns: A newly created #GtkIconView widget.
4400 *
4401 * Since: 2.6
4402 **/
4403 GtkWidget *
gtk_icon_view_new_with_model(GtkTreeModel * model)4404 gtk_icon_view_new_with_model (GtkTreeModel *model)
4405 {
4406 return g_object_new (GTK_TYPE_ICON_VIEW, "model", model, NULL);
4407 }
4408
4409 /**
4410 * gtk_icon_view_convert_widget_to_bin_window_coords:
4411 * @icon_view: a #GtkIconView
4412 * @wx: X coordinate relative to the widget
4413 * @wy: Y coordinate relative to the widget
4414 * @bx: (out): return location for bin_window X coordinate
4415 * @by: (out): return location for bin_window Y coordinate
4416 *
4417 * Converts widget coordinates to coordinates for the bin_window,
4418 * as expected by e.g. gtk_icon_view_get_path_at_pos().
4419 *
4420 * Since: 2.12
4421 */
4422 void
gtk_icon_view_convert_widget_to_bin_window_coords(GtkIconView * icon_view,gint wx,gint wy,gint * bx,gint * by)4423 gtk_icon_view_convert_widget_to_bin_window_coords (GtkIconView *icon_view,
4424 gint wx,
4425 gint wy,
4426 gint *bx,
4427 gint *by)
4428 {
4429 gint x, y;
4430
4431 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4432
4433 if (icon_view->priv->bin_window)
4434 gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4435 else
4436 x = y = 0;
4437
4438 if (bx)
4439 *bx = wx - x;
4440 if (by)
4441 *by = wy - y;
4442 }
4443
4444 /**
4445 * gtk_icon_view_get_path_at_pos:
4446 * @icon_view: A #GtkIconView.
4447 * @x: The x position to be identified
4448 * @y: The y position to be identified
4449 *
4450 * Finds the path at the point (@x, @y), relative to bin_window coordinates.
4451 * See gtk_icon_view_get_item_at_pos(), if you are also interested in
4452 * the cell at the specified position.
4453 * See gtk_icon_view_convert_widget_to_bin_window_coords() for converting
4454 * widget coordinates to bin_window coordinates.
4455 *
4456 * Returns: (nullable) (transfer full): The #GtkTreePath corresponding
4457 * to the icon or %NULL if no icon exists at that position.
4458 *
4459 * Since: 2.6
4460 **/
4461 GtkTreePath *
gtk_icon_view_get_path_at_pos(GtkIconView * icon_view,gint x,gint y)4462 gtk_icon_view_get_path_at_pos (GtkIconView *icon_view,
4463 gint x,
4464 gint y)
4465 {
4466 GtkIconViewItem *item;
4467 GtkTreePath *path;
4468
4469 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
4470
4471 item = _gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, NULL);
4472
4473 if (!item)
4474 return NULL;
4475
4476 path = gtk_tree_path_new_from_indices (item->index, -1);
4477
4478 return path;
4479 }
4480
4481 /**
4482 * gtk_icon_view_get_item_at_pos:
4483 * @icon_view: A #GtkIconView.
4484 * @x: The x position to be identified
4485 * @y: The y position to be identified
4486 * @path: (out) (allow-none): Return location for the path, or %NULL
4487 * @cell: (out) (allow-none) (transfer none): Return location for the renderer
4488 * responsible for the cell at (@x, @y), or %NULL
4489 *
4490 * Finds the path at the point (@x, @y), relative to bin_window coordinates.
4491 * In contrast to gtk_icon_view_get_path_at_pos(), this function also
4492 * obtains the cell at the specified position. The returned path should
4493 * be freed with gtk_tree_path_free().
4494 * See gtk_icon_view_convert_widget_to_bin_window_coords() for converting
4495 * widget coordinates to bin_window coordinates.
4496 *
4497 * Returns: %TRUE if an item exists at the specified position
4498 *
4499 * Since: 2.8
4500 **/
4501 gboolean
gtk_icon_view_get_item_at_pos(GtkIconView * icon_view,gint x,gint y,GtkTreePath ** path,GtkCellRenderer ** cell)4502 gtk_icon_view_get_item_at_pos (GtkIconView *icon_view,
4503 gint x,
4504 gint y,
4505 GtkTreePath **path,
4506 GtkCellRenderer **cell)
4507 {
4508 GtkIconViewItem *item;
4509 GtkCellRenderer *renderer = NULL;
4510
4511 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4512
4513 item = _gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, &renderer);
4514
4515 if (path != NULL)
4516 {
4517 if (item != NULL)
4518 *path = gtk_tree_path_new_from_indices (item->index, -1);
4519 else
4520 *path = NULL;
4521 }
4522
4523 if (cell != NULL)
4524 *cell = renderer;
4525
4526 return (item != NULL);
4527 }
4528
4529 /**
4530 * gtk_icon_view_get_cell_rect:
4531 * @icon_view: a #GtkIconView
4532 * @path: a #GtkTreePath
4533 * @cell: (allow-none): a #GtkCellRenderer or %NULL
4534 * @rect: (out): rectangle to fill with cell rect
4535 *
4536 * Fills the bounding rectangle in widget coordinates for the cell specified by
4537 * @path and @cell. If @cell is %NULL the main cell area is used.
4538 *
4539 * This function is only valid if @icon_view is realized.
4540 *
4541 * Returns: %FALSE if there is no such item, %TRUE otherwise
4542 *
4543 * Since: 3.6
4544 */
4545 gboolean
gtk_icon_view_get_cell_rect(GtkIconView * icon_view,GtkTreePath * path,GtkCellRenderer * cell,GdkRectangle * rect)4546 gtk_icon_view_get_cell_rect (GtkIconView *icon_view,
4547 GtkTreePath *path,
4548 GtkCellRenderer *cell,
4549 GdkRectangle *rect)
4550 {
4551 GtkIconViewItem *item = NULL;
4552 gint x, y;
4553
4554 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4555 g_return_val_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell), FALSE);
4556
4557 if (gtk_tree_path_get_depth (path) > 0)
4558 item = g_list_nth_data (icon_view->priv->items,
4559 gtk_tree_path_get_indices(path)[0]);
4560
4561 if (!item)
4562 return FALSE;
4563
4564 if (cell)
4565 {
4566 GtkCellAreaContext *context;
4567
4568 context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
4569 _gtk_icon_view_set_cell_data (icon_view, item);
4570 gtk_cell_area_get_cell_allocation (icon_view->priv->cell_area, context,
4571 GTK_WIDGET (icon_view),
4572 cell, &item->cell_area, rect);
4573 }
4574 else
4575 {
4576 rect->x = item->cell_area.x - icon_view->priv->item_padding;
4577 rect->y = item->cell_area.y - icon_view->priv->item_padding;
4578 rect->width = item->cell_area.width + icon_view->priv->item_padding * 2;
4579 rect->height = item->cell_area.height + icon_view->priv->item_padding * 2;
4580 }
4581
4582 if (icon_view->priv->bin_window)
4583 {
4584 gdk_window_get_position (icon_view->priv->bin_window, &x, &y);
4585 rect->x += x;
4586 rect->y += y;
4587 }
4588
4589 return TRUE;
4590 }
4591
4592 /**
4593 * gtk_icon_view_set_tooltip_item:
4594 * @icon_view: a #GtkIconView
4595 * @tooltip: a #GtkTooltip
4596 * @path: a #GtkTreePath
4597 *
4598 * Sets the tip area of @tooltip to be the area covered by the item at @path.
4599 * See also gtk_icon_view_set_tooltip_column() for a simpler alternative.
4600 * See also gtk_tooltip_set_tip_area().
4601 *
4602 * Since: 2.12
4603 */
4604 void
gtk_icon_view_set_tooltip_item(GtkIconView * icon_view,GtkTooltip * tooltip,GtkTreePath * path)4605 gtk_icon_view_set_tooltip_item (GtkIconView *icon_view,
4606 GtkTooltip *tooltip,
4607 GtkTreePath *path)
4608 {
4609 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4610 g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
4611
4612 gtk_icon_view_set_tooltip_cell (icon_view, tooltip, path, NULL);
4613 }
4614
4615 /**
4616 * gtk_icon_view_set_tooltip_cell:
4617 * @icon_view: a #GtkIconView
4618 * @tooltip: a #GtkTooltip
4619 * @path: a #GtkTreePath
4620 * @cell: (allow-none): a #GtkCellRenderer or %NULL
4621 *
4622 * Sets the tip area of @tooltip to the area which @cell occupies in
4623 * the item pointed to by @path. See also gtk_tooltip_set_tip_area().
4624 *
4625 * See also gtk_icon_view_set_tooltip_column() for a simpler alternative.
4626 *
4627 * Since: 2.12
4628 */
4629 void
gtk_icon_view_set_tooltip_cell(GtkIconView * icon_view,GtkTooltip * tooltip,GtkTreePath * path,GtkCellRenderer * cell)4630 gtk_icon_view_set_tooltip_cell (GtkIconView *icon_view,
4631 GtkTooltip *tooltip,
4632 GtkTreePath *path,
4633 GtkCellRenderer *cell)
4634 {
4635 GdkRectangle rect;
4636
4637 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4638 g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
4639 g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
4640
4641 if (!gtk_icon_view_get_cell_rect (icon_view, path, cell, &rect))
4642 return;
4643
4644 gtk_tooltip_set_tip_area (tooltip, &rect);
4645 }
4646
4647
4648 /**
4649 * gtk_icon_view_get_tooltip_context:
4650 * @icon_view: an #GtkIconView
4651 * @x: (inout): the x coordinate (relative to widget coordinates)
4652 * @y: (inout): the y coordinate (relative to widget coordinates)
4653 * @keyboard_tip: whether this is a keyboard tooltip or not
4654 * @model: (out) (allow-none) (transfer none): a pointer to receive a
4655 * #GtkTreeModel or %NULL
4656 * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
4657 * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
4658 *
4659 * This function is supposed to be used in a #GtkWidget::query-tooltip
4660 * signal handler for #GtkIconView. The @x, @y and @keyboard_tip values
4661 * which are received in the signal handler, should be passed to this
4662 * function without modification.
4663 *
4664 * The return value indicates whether there is an icon view item at the given
4665 * coordinates (%TRUE) or not (%FALSE) for mouse tooltips. For keyboard
4666 * tooltips the item returned will be the cursor item. When %TRUE, then any of
4667 * @model, @path and @iter which have been provided will be set to point to
4668 * that row and the corresponding model. @x and @y will always be converted
4669 * to be relative to @icon_view’s bin_window if @keyboard_tooltip is %FALSE.
4670 *
4671 * Returns: whether or not the given tooltip context points to a item
4672 *
4673 * Since: 2.12
4674 */
4675 gboolean
gtk_icon_view_get_tooltip_context(GtkIconView * icon_view,gint * x,gint * y,gboolean keyboard_tip,GtkTreeModel ** model,GtkTreePath ** path,GtkTreeIter * iter)4676 gtk_icon_view_get_tooltip_context (GtkIconView *icon_view,
4677 gint *x,
4678 gint *y,
4679 gboolean keyboard_tip,
4680 GtkTreeModel **model,
4681 GtkTreePath **path,
4682 GtkTreeIter *iter)
4683 {
4684 GtkTreePath *tmppath = NULL;
4685
4686 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4687 g_return_val_if_fail (x != NULL, FALSE);
4688 g_return_val_if_fail (y != NULL, FALSE);
4689
4690 if (keyboard_tip)
4691 {
4692 gtk_icon_view_get_cursor (icon_view, &tmppath, NULL);
4693
4694 if (!tmppath)
4695 return FALSE;
4696 }
4697 else
4698 {
4699 gtk_icon_view_convert_widget_to_bin_window_coords (icon_view, *x, *y,
4700 x, y);
4701
4702 if (!gtk_icon_view_get_item_at_pos (icon_view, *x, *y, &tmppath, NULL))
4703 return FALSE;
4704 }
4705
4706 if (model)
4707 *model = gtk_icon_view_get_model (icon_view);
4708
4709 if (iter)
4710 gtk_tree_model_get_iter (gtk_icon_view_get_model (icon_view),
4711 iter, tmppath);
4712
4713 if (path)
4714 *path = tmppath;
4715 else
4716 gtk_tree_path_free (tmppath);
4717
4718 return TRUE;
4719 }
4720
4721 static gboolean
gtk_icon_view_set_tooltip_query_cb(GtkWidget * widget,gint x,gint y,gboolean keyboard_tip,GtkTooltip * tooltip,gpointer data)4722 gtk_icon_view_set_tooltip_query_cb (GtkWidget *widget,
4723 gint x,
4724 gint y,
4725 gboolean keyboard_tip,
4726 GtkTooltip *tooltip,
4727 gpointer data)
4728 {
4729 gchar *str;
4730 GtkTreeIter iter;
4731 GtkTreePath *path;
4732 GtkTreeModel *model;
4733 GtkIconView *icon_view = GTK_ICON_VIEW (widget);
4734
4735 if (!gtk_icon_view_get_tooltip_context (GTK_ICON_VIEW (widget),
4736 &x, &y,
4737 keyboard_tip,
4738 &model, &path, &iter))
4739 return FALSE;
4740
4741 gtk_tree_model_get (model, &iter, icon_view->priv->tooltip_column, &str, -1);
4742
4743 if (!str)
4744 {
4745 gtk_tree_path_free (path);
4746 return FALSE;
4747 }
4748
4749 gtk_tooltip_set_markup (tooltip, str);
4750 gtk_icon_view_set_tooltip_item (icon_view, tooltip, path);
4751
4752 gtk_tree_path_free (path);
4753 g_free (str);
4754
4755 return TRUE;
4756 }
4757
4758
4759 /**
4760 * gtk_icon_view_set_tooltip_column:
4761 * @icon_view: a #GtkIconView
4762 * @column: an integer, which is a valid column number for @icon_view’s model
4763 *
4764 * If you only plan to have simple (text-only) tooltips on full items, you
4765 * can use this function to have #GtkIconView handle these automatically
4766 * for you. @column should be set to the column in @icon_view’s model
4767 * containing the tooltip texts, or -1 to disable this feature.
4768 *
4769 * When enabled, #GtkWidget:has-tooltip will be set to %TRUE and
4770 * @icon_view will connect a #GtkWidget::query-tooltip signal handler.
4771 *
4772 * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
4773 * so &, <, etc have to be escaped in the text.
4774 *
4775 * Since: 2.12
4776 */
4777 void
gtk_icon_view_set_tooltip_column(GtkIconView * icon_view,gint column)4778 gtk_icon_view_set_tooltip_column (GtkIconView *icon_view,
4779 gint column)
4780 {
4781 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4782
4783 if (column == icon_view->priv->tooltip_column)
4784 return;
4785
4786 if (column == -1)
4787 {
4788 g_signal_handlers_disconnect_by_func (icon_view,
4789 gtk_icon_view_set_tooltip_query_cb,
4790 NULL);
4791 gtk_widget_set_has_tooltip (GTK_WIDGET (icon_view), FALSE);
4792 }
4793 else
4794 {
4795 if (icon_view->priv->tooltip_column == -1)
4796 {
4797 g_signal_connect (icon_view, "query-tooltip",
4798 G_CALLBACK (gtk_icon_view_set_tooltip_query_cb), NULL);
4799 gtk_widget_set_has_tooltip (GTK_WIDGET (icon_view), TRUE);
4800 }
4801 }
4802
4803 icon_view->priv->tooltip_column = column;
4804 g_object_notify (G_OBJECT (icon_view), "tooltip-column");
4805 }
4806
4807 /**
4808 * gtk_icon_view_get_tooltip_column:
4809 * @icon_view: a #GtkIconView
4810 *
4811 * Returns the column of @icon_view’s model which is being used for
4812 * displaying tooltips on @icon_view’s rows.
4813 *
4814 * Returns: the index of the tooltip column that is currently being
4815 * used, or -1 if this is disabled.
4816 *
4817 * Since: 2.12
4818 */
4819 gint
gtk_icon_view_get_tooltip_column(GtkIconView * icon_view)4820 gtk_icon_view_get_tooltip_column (GtkIconView *icon_view)
4821 {
4822 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), 0);
4823
4824 return icon_view->priv->tooltip_column;
4825 }
4826
4827 /**
4828 * gtk_icon_view_get_visible_range:
4829 * @icon_view: A #GtkIconView
4830 * @start_path: (out) (allow-none): Return location for start of region,
4831 * or %NULL
4832 * @end_path: (out) (allow-none): Return location for end of region, or %NULL
4833 *
4834 * Sets @start_path and @end_path to be the first and last visible path.
4835 * Note that there may be invisible paths in between.
4836 *
4837 * Both paths should be freed with gtk_tree_path_free() after use.
4838 *
4839 * Returns: %TRUE, if valid paths were placed in @start_path and @end_path
4840 *
4841 * Since: 2.8
4842 **/
4843 gboolean
gtk_icon_view_get_visible_range(GtkIconView * icon_view,GtkTreePath ** start_path,GtkTreePath ** end_path)4844 gtk_icon_view_get_visible_range (GtkIconView *icon_view,
4845 GtkTreePath **start_path,
4846 GtkTreePath **end_path)
4847 {
4848 gint start_index = -1;
4849 gint end_index = -1;
4850 GList *icons;
4851
4852 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
4853
4854 if (icon_view->priv->hadjustment == NULL ||
4855 icon_view->priv->vadjustment == NULL)
4856 return FALSE;
4857
4858 if (start_path == NULL && end_path == NULL)
4859 return FALSE;
4860
4861 for (icons = icon_view->priv->items; icons; icons = icons->next)
4862 {
4863 GtkIconViewItem *item = icons->data;
4864 GdkRectangle *item_area = &item->cell_area;
4865
4866 if ((item_area->x + item_area->width >= (int)gtk_adjustment_get_value (icon_view->priv->hadjustment)) &&
4867 (item_area->y + item_area->height >= (int)gtk_adjustment_get_value (icon_view->priv->vadjustment)) &&
4868 (item_area->x <=
4869 (int) (gtk_adjustment_get_value (icon_view->priv->hadjustment) +
4870 gtk_adjustment_get_page_size (icon_view->priv->hadjustment))) &&
4871 (item_area->y <=
4872 (int) (gtk_adjustment_get_value (icon_view->priv->vadjustment) +
4873 gtk_adjustment_get_page_size (icon_view->priv->vadjustment))))
4874 {
4875 if (start_index == -1)
4876 start_index = item->index;
4877 end_index = item->index;
4878 }
4879 }
4880
4881 if (start_path && start_index != -1)
4882 *start_path = gtk_tree_path_new_from_indices (start_index, -1);
4883 if (end_path && end_index != -1)
4884 *end_path = gtk_tree_path_new_from_indices (end_index, -1);
4885
4886 return start_index != -1;
4887 }
4888
4889 /**
4890 * gtk_icon_view_selected_foreach:
4891 * @icon_view: A #GtkIconView.
4892 * @func: (scope call): The function to call for each selected icon.
4893 * @data: User data to pass to the function.
4894 *
4895 * Calls a function for each selected icon. Note that the model or
4896 * selection cannot be modified from within this function.
4897 *
4898 * Since: 2.6
4899 **/
4900 void
gtk_icon_view_selected_foreach(GtkIconView * icon_view,GtkIconViewForeachFunc func,gpointer data)4901 gtk_icon_view_selected_foreach (GtkIconView *icon_view,
4902 GtkIconViewForeachFunc func,
4903 gpointer data)
4904 {
4905 GList *list;
4906
4907 for (list = icon_view->priv->items; list; list = list->next)
4908 {
4909 GtkIconViewItem *item = list->data;
4910 GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
4911
4912 if (item->selected)
4913 (* func) (icon_view, path, data);
4914
4915 gtk_tree_path_free (path);
4916 }
4917 }
4918
4919 /**
4920 * gtk_icon_view_set_selection_mode:
4921 * @icon_view: A #GtkIconView.
4922 * @mode: The selection mode
4923 *
4924 * Sets the selection mode of the @icon_view.
4925 *
4926 * Since: 2.6
4927 **/
4928 void
gtk_icon_view_set_selection_mode(GtkIconView * icon_view,GtkSelectionMode mode)4929 gtk_icon_view_set_selection_mode (GtkIconView *icon_view,
4930 GtkSelectionMode mode)
4931 {
4932 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4933
4934 if (mode == icon_view->priv->selection_mode)
4935 return;
4936
4937 if (mode == GTK_SELECTION_NONE ||
4938 icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
4939 gtk_icon_view_unselect_all (icon_view);
4940
4941 icon_view->priv->selection_mode = mode;
4942
4943 g_object_notify (G_OBJECT (icon_view), "selection-mode");
4944 }
4945
4946 /**
4947 * gtk_icon_view_get_selection_mode:
4948 * @icon_view: A #GtkIconView.
4949 *
4950 * Gets the selection mode of the @icon_view.
4951 *
4952 * Returns: the current selection mode
4953 *
4954 * Since: 2.6
4955 **/
4956 GtkSelectionMode
gtk_icon_view_get_selection_mode(GtkIconView * icon_view)4957 gtk_icon_view_get_selection_mode (GtkIconView *icon_view)
4958 {
4959 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), GTK_SELECTION_SINGLE);
4960
4961 return icon_view->priv->selection_mode;
4962 }
4963
4964 /**
4965 * gtk_icon_view_set_model:
4966 * @icon_view: A #GtkIconView.
4967 * @model: (allow-none): The model.
4968 *
4969 * Sets the model for a #GtkIconView.
4970 * If the @icon_view already has a model set, it will remove
4971 * it before setting the new model. If @model is %NULL, then
4972 * it will unset the old model.
4973 *
4974 * Since: 2.6
4975 **/
4976 void
gtk_icon_view_set_model(GtkIconView * icon_view,GtkTreeModel * model)4977 gtk_icon_view_set_model (GtkIconView *icon_view,
4978 GtkTreeModel *model)
4979 {
4980 gboolean dirty;
4981
4982 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
4983 g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
4984
4985 if (icon_view->priv->model == model)
4986 return;
4987
4988 if (icon_view->priv->scroll_to_path)
4989 {
4990 gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
4991 icon_view->priv->scroll_to_path = NULL;
4992 }
4993
4994 /* The area can be NULL while disposing */
4995 if (icon_view->priv->cell_area)
4996 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
4997
4998 dirty = gtk_icon_view_unselect_all_internal (icon_view);
4999
5000 if (model)
5001 {
5002 GType column_type;
5003
5004 if (icon_view->priv->pixbuf_column != -1)
5005 {
5006 column_type = gtk_tree_model_get_column_type (model,
5007 icon_view->priv->pixbuf_column);
5008
5009 g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
5010 }
5011
5012 if (icon_view->priv->text_column != -1)
5013 {
5014 column_type = gtk_tree_model_get_column_type (model,
5015 icon_view->priv->text_column);
5016
5017 g_return_if_fail (column_type == G_TYPE_STRING);
5018 }
5019
5020 if (icon_view->priv->markup_column != -1)
5021 {
5022 column_type = gtk_tree_model_get_column_type (model,
5023 icon_view->priv->markup_column);
5024
5025 g_return_if_fail (column_type == G_TYPE_STRING);
5026 }
5027
5028 }
5029
5030 if (icon_view->priv->model)
5031 {
5032 g_signal_handlers_disconnect_by_func (icon_view->priv->model,
5033 gtk_icon_view_row_changed,
5034 icon_view);
5035 g_signal_handlers_disconnect_by_func (icon_view->priv->model,
5036 gtk_icon_view_row_inserted,
5037 icon_view);
5038 g_signal_handlers_disconnect_by_func (icon_view->priv->model,
5039 gtk_icon_view_row_deleted,
5040 icon_view);
5041 g_signal_handlers_disconnect_by_func (icon_view->priv->model,
5042 gtk_icon_view_rows_reordered,
5043 icon_view);
5044
5045 g_object_unref (icon_view->priv->model);
5046
5047 g_list_free_full (icon_view->priv->items, (GDestroyNotify) gtk_icon_view_item_free);
5048 icon_view->priv->items = NULL;
5049 icon_view->priv->anchor_item = NULL;
5050 icon_view->priv->cursor_item = NULL;
5051 icon_view->priv->last_single_clicked = NULL;
5052 icon_view->priv->last_prelight = NULL;
5053 icon_view->priv->width = 0;
5054 icon_view->priv->height = 0;
5055 }
5056
5057 icon_view->priv->model = model;
5058
5059 if (icon_view->priv->model)
5060 {
5061 g_object_ref (icon_view->priv->model);
5062 g_signal_connect (icon_view->priv->model,
5063 "row-changed",
5064 G_CALLBACK (gtk_icon_view_row_changed),
5065 icon_view);
5066 g_signal_connect (icon_view->priv->model,
5067 "row-inserted",
5068 G_CALLBACK (gtk_icon_view_row_inserted),
5069 icon_view);
5070 g_signal_connect (icon_view->priv->model,
5071 "row-deleted",
5072 G_CALLBACK (gtk_icon_view_row_deleted),
5073 icon_view);
5074 g_signal_connect (icon_view->priv->model,
5075 "rows-reordered",
5076 G_CALLBACK (gtk_icon_view_rows_reordered),
5077 icon_view);
5078
5079 gtk_icon_view_build_items (icon_view);
5080 }
5081
5082 g_object_notify (G_OBJECT (icon_view), "model");
5083
5084 if (dirty)
5085 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
5086
5087 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
5088 }
5089
5090 /**
5091 * gtk_icon_view_get_model:
5092 * @icon_view: a #GtkIconView
5093 *
5094 * Returns the model the #GtkIconView is based on. Returns %NULL if the
5095 * model is unset.
5096 *
5097 * Returns: (nullable) (transfer none): A #GtkTreeModel, or %NULL if none is
5098 * currently being used.
5099 *
5100 * Since: 2.6
5101 **/
5102 GtkTreeModel *
gtk_icon_view_get_model(GtkIconView * icon_view)5103 gtk_icon_view_get_model (GtkIconView *icon_view)
5104 {
5105 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
5106
5107 return icon_view->priv->model;
5108 }
5109
5110 static void
update_text_cell(GtkIconView * icon_view)5111 update_text_cell (GtkIconView *icon_view)
5112 {
5113 if (!icon_view->priv->cell_area)
5114 return;
5115
5116 if (icon_view->priv->text_column == -1 &&
5117 icon_view->priv->markup_column == -1)
5118 {
5119 if (icon_view->priv->text_cell != NULL)
5120 {
5121 gtk_cell_area_remove (icon_view->priv->cell_area,
5122 icon_view->priv->text_cell);
5123 icon_view->priv->text_cell = NULL;
5124 }
5125 }
5126 else
5127 {
5128 if (icon_view->priv->text_cell == NULL)
5129 {
5130 icon_view->priv->text_cell = gtk_cell_renderer_text_new ();
5131
5132 gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (icon_view), icon_view->priv->text_cell, FALSE);
5133 }
5134
5135 if (icon_view->priv->markup_column != -1)
5136 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
5137 icon_view->priv->text_cell,
5138 "markup", icon_view->priv->markup_column,
5139 NULL);
5140 else
5141 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
5142 icon_view->priv->text_cell,
5143 "text", icon_view->priv->text_column,
5144 NULL);
5145
5146 if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
5147 g_object_set (icon_view->priv->text_cell,
5148 "alignment", PANGO_ALIGN_CENTER,
5149 "wrap-mode", PANGO_WRAP_WORD_CHAR,
5150 "xalign", 0.5,
5151 "yalign", 0.0,
5152 NULL);
5153 else
5154 g_object_set (icon_view->priv->text_cell,
5155 "alignment", PANGO_ALIGN_LEFT,
5156 "wrap-mode", PANGO_WRAP_WORD_CHAR,
5157 "xalign", 0.0,
5158 "yalign", 0.5,
5159 NULL);
5160 }
5161 }
5162
5163 static void
update_pixbuf_cell(GtkIconView * icon_view)5164 update_pixbuf_cell (GtkIconView *icon_view)
5165 {
5166 if (!icon_view->priv->cell_area)
5167 return;
5168
5169 if (icon_view->priv->pixbuf_column == -1)
5170 {
5171 if (icon_view->priv->pixbuf_cell != NULL)
5172 {
5173 gtk_cell_area_remove (icon_view->priv->cell_area,
5174 icon_view->priv->pixbuf_cell);
5175
5176 icon_view->priv->pixbuf_cell = NULL;
5177 }
5178 }
5179 else
5180 {
5181 if (icon_view->priv->pixbuf_cell == NULL)
5182 {
5183 icon_view->priv->pixbuf_cell = gtk_cell_renderer_pixbuf_new ();
5184
5185 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_view), icon_view->priv->pixbuf_cell, FALSE);
5186 }
5187
5188 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
5189 icon_view->priv->pixbuf_cell,
5190 "pixbuf", icon_view->priv->pixbuf_column,
5191 NULL);
5192
5193 if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
5194 g_object_set (icon_view->priv->pixbuf_cell,
5195 "xalign", 0.5,
5196 "yalign", 1.0,
5197 NULL);
5198 else
5199 g_object_set (icon_view->priv->pixbuf_cell,
5200 "xalign", 0.0,
5201 "yalign", 0.0,
5202 NULL);
5203 }
5204 }
5205
5206 /**
5207 * gtk_icon_view_set_text_column:
5208 * @icon_view: A #GtkIconView.
5209 * @column: A column in the currently used model, or -1 to display no text
5210 *
5211 * Sets the column with text for @icon_view to be @column. The text
5212 * column must be of type #G_TYPE_STRING.
5213 *
5214 * Since: 2.6
5215 **/
5216 void
gtk_icon_view_set_text_column(GtkIconView * icon_view,gint column)5217 gtk_icon_view_set_text_column (GtkIconView *icon_view,
5218 gint column)
5219 {
5220 if (column == icon_view->priv->text_column)
5221 return;
5222
5223 if (column == -1)
5224 icon_view->priv->text_column = -1;
5225 else
5226 {
5227 if (icon_view->priv->model != NULL)
5228 {
5229 GType column_type;
5230
5231 column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5232
5233 g_return_if_fail (column_type == G_TYPE_STRING);
5234 }
5235
5236 icon_view->priv->text_column = column;
5237 }
5238
5239 if (icon_view->priv->cell_area)
5240 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5241
5242 update_text_cell (icon_view);
5243
5244 gtk_icon_view_invalidate_sizes (icon_view);
5245
5246 g_object_notify (G_OBJECT (icon_view), "text-column");
5247 }
5248
5249 /**
5250 * gtk_icon_view_get_text_column:
5251 * @icon_view: A #GtkIconView.
5252 *
5253 * Returns the column with text for @icon_view.
5254 *
5255 * Returns: the text column, or -1 if it’s unset.
5256 *
5257 * Since: 2.6
5258 */
5259 gint
gtk_icon_view_get_text_column(GtkIconView * icon_view)5260 gtk_icon_view_get_text_column (GtkIconView *icon_view)
5261 {
5262 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5263
5264 return icon_view->priv->text_column;
5265 }
5266
5267 /**
5268 * gtk_icon_view_set_markup_column:
5269 * @icon_view: A #GtkIconView.
5270 * @column: A column in the currently used model, or -1 to display no text
5271 *
5272 * Sets the column with markup information for @icon_view to be
5273 * @column. The markup column must be of type #G_TYPE_STRING.
5274 * If the markup column is set to something, it overrides
5275 * the text column set by gtk_icon_view_set_text_column().
5276 *
5277 * Since: 2.6
5278 **/
5279 void
gtk_icon_view_set_markup_column(GtkIconView * icon_view,gint column)5280 gtk_icon_view_set_markup_column (GtkIconView *icon_view,
5281 gint column)
5282 {
5283 if (column == icon_view->priv->markup_column)
5284 return;
5285
5286 if (column == -1)
5287 icon_view->priv->markup_column = -1;
5288 else
5289 {
5290 if (icon_view->priv->model != NULL)
5291 {
5292 GType column_type;
5293
5294 column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5295
5296 g_return_if_fail (column_type == G_TYPE_STRING);
5297 }
5298
5299 icon_view->priv->markup_column = column;
5300 }
5301
5302 if (icon_view->priv->cell_area)
5303 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5304
5305 update_text_cell (icon_view);
5306
5307 gtk_icon_view_invalidate_sizes (icon_view);
5308
5309 g_object_notify (G_OBJECT (icon_view), "markup-column");
5310 }
5311
5312 /**
5313 * gtk_icon_view_get_markup_column:
5314 * @icon_view: A #GtkIconView.
5315 *
5316 * Returns the column with markup text for @icon_view.
5317 *
5318 * Returns: the markup column, or -1 if it’s unset.
5319 *
5320 * Since: 2.6
5321 */
5322 gint
gtk_icon_view_get_markup_column(GtkIconView * icon_view)5323 gtk_icon_view_get_markup_column (GtkIconView *icon_view)
5324 {
5325 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5326
5327 return icon_view->priv->markup_column;
5328 }
5329
5330 /**
5331 * gtk_icon_view_set_pixbuf_column:
5332 * @icon_view: A #GtkIconView.
5333 * @column: A column in the currently used model, or -1 to disable
5334 *
5335 * Sets the column with pixbufs for @icon_view to be @column. The pixbuf
5336 * column must be of type #GDK_TYPE_PIXBUF
5337 *
5338 * Since: 2.6
5339 **/
5340 void
gtk_icon_view_set_pixbuf_column(GtkIconView * icon_view,gint column)5341 gtk_icon_view_set_pixbuf_column (GtkIconView *icon_view,
5342 gint column)
5343 {
5344 if (column == icon_view->priv->pixbuf_column)
5345 return;
5346
5347 if (column == -1)
5348 icon_view->priv->pixbuf_column = -1;
5349 else
5350 {
5351 if (icon_view->priv->model != NULL)
5352 {
5353 GType column_type;
5354
5355 column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
5356
5357 g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
5358 }
5359
5360 icon_view->priv->pixbuf_column = column;
5361 }
5362
5363 if (icon_view->priv->cell_area)
5364 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5365
5366 update_pixbuf_cell (icon_view);
5367
5368 gtk_icon_view_invalidate_sizes (icon_view);
5369
5370 g_object_notify (G_OBJECT (icon_view), "pixbuf-column");
5371
5372 }
5373
5374 /**
5375 * gtk_icon_view_get_pixbuf_column:
5376 * @icon_view: A #GtkIconView.
5377 *
5378 * Returns the column with pixbufs for @icon_view.
5379 *
5380 * Returns: the pixbuf column, or -1 if it’s unset.
5381 *
5382 * Since: 2.6
5383 */
5384 gint
gtk_icon_view_get_pixbuf_column(GtkIconView * icon_view)5385 gtk_icon_view_get_pixbuf_column (GtkIconView *icon_view)
5386 {
5387 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5388
5389 return icon_view->priv->pixbuf_column;
5390 }
5391
5392 /**
5393 * gtk_icon_view_select_path:
5394 * @icon_view: A #GtkIconView.
5395 * @path: The #GtkTreePath to be selected.
5396 *
5397 * Selects the row at @path.
5398 *
5399 * Since: 2.6
5400 **/
5401 void
gtk_icon_view_select_path(GtkIconView * icon_view,GtkTreePath * path)5402 gtk_icon_view_select_path (GtkIconView *icon_view,
5403 GtkTreePath *path)
5404 {
5405 GtkIconViewItem *item = NULL;
5406
5407 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5408 g_return_if_fail (icon_view->priv->model != NULL);
5409 g_return_if_fail (path != NULL);
5410
5411 if (gtk_tree_path_get_depth (path) > 0)
5412 item = g_list_nth_data (icon_view->priv->items,
5413 gtk_tree_path_get_indices(path)[0]);
5414
5415 if (item)
5416 _gtk_icon_view_select_item (icon_view, item);
5417 }
5418
5419 /**
5420 * gtk_icon_view_unselect_path:
5421 * @icon_view: A #GtkIconView.
5422 * @path: The #GtkTreePath to be unselected.
5423 *
5424 * Unselects the row at @path.
5425 *
5426 * Since: 2.6
5427 **/
5428 void
gtk_icon_view_unselect_path(GtkIconView * icon_view,GtkTreePath * path)5429 gtk_icon_view_unselect_path (GtkIconView *icon_view,
5430 GtkTreePath *path)
5431 {
5432 GtkIconViewItem *item;
5433
5434 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5435 g_return_if_fail (icon_view->priv->model != NULL);
5436 g_return_if_fail (path != NULL);
5437
5438 item = g_list_nth_data (icon_view->priv->items,
5439 gtk_tree_path_get_indices(path)[0]);
5440
5441 if (!item)
5442 return;
5443
5444 _gtk_icon_view_unselect_item (icon_view, item);
5445 }
5446
5447 /**
5448 * gtk_icon_view_get_selected_items:
5449 * @icon_view: A #GtkIconView.
5450 *
5451 * Creates a list of paths of all selected items. Additionally, if you are
5452 * planning on modifying the model after calling this function, you may
5453 * want to convert the returned list into a list of #GtkTreeRowReferences.
5454 * To do this, you can use gtk_tree_row_reference_new().
5455 *
5456 * To free the return value, use:
5457 * |[<!-- language="C" -->
5458 * g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
5459 * ]|
5460 *
5461 * Returns: (element-type GtkTreePath) (transfer full): A #GList containing a #GtkTreePath for each selected row.
5462 *
5463 * Since: 2.6
5464 **/
5465 GList *
gtk_icon_view_get_selected_items(GtkIconView * icon_view)5466 gtk_icon_view_get_selected_items (GtkIconView *icon_view)
5467 {
5468 GList *list;
5469 GList *selected = NULL;
5470
5471 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
5472
5473 for (list = icon_view->priv->items; list != NULL; list = list->next)
5474 {
5475 GtkIconViewItem *item = list->data;
5476
5477 if (item->selected)
5478 {
5479 GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
5480
5481 selected = g_list_prepend (selected, path);
5482 }
5483 }
5484
5485 return selected;
5486 }
5487
5488 /**
5489 * gtk_icon_view_select_all:
5490 * @icon_view: A #GtkIconView.
5491 *
5492 * Selects all the icons. @icon_view must has its selection mode set
5493 * to #GTK_SELECTION_MULTIPLE.
5494 *
5495 * Since: 2.6
5496 **/
5497 void
gtk_icon_view_select_all(GtkIconView * icon_view)5498 gtk_icon_view_select_all (GtkIconView *icon_view)
5499 {
5500 GList *items;
5501 gboolean dirty = FALSE;
5502
5503 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5504
5505 if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
5506 return;
5507
5508 for (items = icon_view->priv->items; items; items = items->next)
5509 {
5510 GtkIconViewItem *item = items->data;
5511
5512 if (!item->selected)
5513 {
5514 dirty = TRUE;
5515 item->selected = TRUE;
5516 gtk_icon_view_queue_draw_item (icon_view, item);
5517 }
5518 }
5519
5520 if (dirty)
5521 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
5522 }
5523
5524 /**
5525 * gtk_icon_view_unselect_all:
5526 * @icon_view: A #GtkIconView.
5527 *
5528 * Unselects all the icons.
5529 *
5530 * Since: 2.6
5531 **/
5532 void
gtk_icon_view_unselect_all(GtkIconView * icon_view)5533 gtk_icon_view_unselect_all (GtkIconView *icon_view)
5534 {
5535 gboolean dirty = FALSE;
5536
5537 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5538
5539 if (icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
5540 return;
5541
5542 dirty = gtk_icon_view_unselect_all_internal (icon_view);
5543
5544 if (dirty)
5545 g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
5546 }
5547
5548 /**
5549 * gtk_icon_view_path_is_selected:
5550 * @icon_view: A #GtkIconView.
5551 * @path: A #GtkTreePath to check selection on.
5552 *
5553 * Returns %TRUE if the icon pointed to by @path is currently
5554 * selected. If @path does not point to a valid location, %FALSE is returned.
5555 *
5556 * Returns: %TRUE if @path is selected.
5557 *
5558 * Since: 2.6
5559 **/
5560 gboolean
gtk_icon_view_path_is_selected(GtkIconView * icon_view,GtkTreePath * path)5561 gtk_icon_view_path_is_selected (GtkIconView *icon_view,
5562 GtkTreePath *path)
5563 {
5564 GtkIconViewItem *item;
5565
5566 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
5567 g_return_val_if_fail (icon_view->priv->model != NULL, FALSE);
5568 g_return_val_if_fail (path != NULL, FALSE);
5569
5570 item = g_list_nth_data (icon_view->priv->items,
5571 gtk_tree_path_get_indices(path)[0]);
5572
5573 if (!item)
5574 return FALSE;
5575
5576 return item->selected;
5577 }
5578
5579 /**
5580 * gtk_icon_view_get_item_row:
5581 * @icon_view: a #GtkIconView
5582 * @path: the #GtkTreePath of the item
5583 *
5584 * Gets the row in which the item @path is currently
5585 * displayed. Row numbers start at 0.
5586 *
5587 * Returns: The row in which the item is displayed
5588 *
5589 * Since: 2.22
5590 */
5591 gint
gtk_icon_view_get_item_row(GtkIconView * icon_view,GtkTreePath * path)5592 gtk_icon_view_get_item_row (GtkIconView *icon_view,
5593 GtkTreePath *path)
5594 {
5595 GtkIconViewItem *item;
5596
5597 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5598 g_return_val_if_fail (icon_view->priv->model != NULL, -1);
5599 g_return_val_if_fail (path != NULL, -1);
5600
5601 item = g_list_nth_data (icon_view->priv->items,
5602 gtk_tree_path_get_indices(path)[0]);
5603
5604 if (!item)
5605 return -1;
5606
5607 return item->row;
5608 }
5609
5610 /**
5611 * gtk_icon_view_get_item_column:
5612 * @icon_view: a #GtkIconView
5613 * @path: the #GtkTreePath of the item
5614 *
5615 * Gets the column in which the item @path is currently
5616 * displayed. Column numbers start at 0.
5617 *
5618 * Returns: The column in which the item is displayed
5619 *
5620 * Since: 2.22
5621 */
5622 gint
gtk_icon_view_get_item_column(GtkIconView * icon_view,GtkTreePath * path)5623 gtk_icon_view_get_item_column (GtkIconView *icon_view,
5624 GtkTreePath *path)
5625 {
5626 GtkIconViewItem *item;
5627
5628 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5629 g_return_val_if_fail (icon_view->priv->model != NULL, -1);
5630 g_return_val_if_fail (path != NULL, -1);
5631
5632 item = g_list_nth_data (icon_view->priv->items,
5633 gtk_tree_path_get_indices(path)[0]);
5634
5635 if (!item)
5636 return -1;
5637
5638 return item->col;
5639 }
5640
5641 /**
5642 * gtk_icon_view_item_activated:
5643 * @icon_view: A #GtkIconView
5644 * @path: The #GtkTreePath to be activated
5645 *
5646 * Activates the item determined by @path.
5647 *
5648 * Since: 2.6
5649 **/
5650 void
gtk_icon_view_item_activated(GtkIconView * icon_view,GtkTreePath * path)5651 gtk_icon_view_item_activated (GtkIconView *icon_view,
5652 GtkTreePath *path)
5653 {
5654 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5655 g_return_if_fail (path != NULL);
5656
5657 g_signal_emit (icon_view, icon_view_signals[ITEM_ACTIVATED], 0, path);
5658 }
5659
5660 /**
5661 * gtk_icon_view_set_item_orientation:
5662 * @icon_view: a #GtkIconView
5663 * @orientation: the relative position of texts and icons
5664 *
5665 * Sets the ::item-orientation property which determines whether the labels
5666 * are drawn beside the icons instead of below.
5667 *
5668 * Since: 2.6
5669 **/
5670 void
gtk_icon_view_set_item_orientation(GtkIconView * icon_view,GtkOrientation orientation)5671 gtk_icon_view_set_item_orientation (GtkIconView *icon_view,
5672 GtkOrientation orientation)
5673 {
5674 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5675
5676 if (icon_view->priv->item_orientation != orientation)
5677 {
5678 icon_view->priv->item_orientation = orientation;
5679
5680 if (icon_view->priv->cell_area)
5681 {
5682 if (GTK_IS_ORIENTABLE (icon_view->priv->cell_area))
5683 gtk_orientable_set_orientation (GTK_ORIENTABLE (icon_view->priv->cell_area),
5684 icon_view->priv->item_orientation);
5685
5686 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5687 }
5688
5689 gtk_icon_view_invalidate_sizes (icon_view);
5690
5691 update_text_cell (icon_view);
5692 update_pixbuf_cell (icon_view);
5693
5694 g_object_notify (G_OBJECT (icon_view), "item-orientation");
5695 }
5696 }
5697
5698 /**
5699 * gtk_icon_view_get_item_orientation:
5700 * @icon_view: a #GtkIconView
5701 *
5702 * Returns the value of the ::item-orientation property which determines
5703 * whether the labels are drawn beside the icons instead of below.
5704 *
5705 * Returns: the relative position of texts and icons
5706 *
5707 * Since: 2.6
5708 **/
5709 GtkOrientation
gtk_icon_view_get_item_orientation(GtkIconView * icon_view)5710 gtk_icon_view_get_item_orientation (GtkIconView *icon_view)
5711 {
5712 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view),
5713 GTK_ORIENTATION_VERTICAL);
5714
5715 return icon_view->priv->item_orientation;
5716 }
5717
5718 /**
5719 * gtk_icon_view_set_columns:
5720 * @icon_view: a #GtkIconView
5721 * @columns: the number of columns
5722 *
5723 * Sets the ::columns property which determines in how
5724 * many columns the icons are arranged. If @columns is
5725 * -1, the number of columns will be chosen automatically
5726 * to fill the available area.
5727 *
5728 * Since: 2.6
5729 */
5730 void
gtk_icon_view_set_columns(GtkIconView * icon_view,gint columns)5731 gtk_icon_view_set_columns (GtkIconView *icon_view,
5732 gint columns)
5733 {
5734 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5735
5736 if (icon_view->priv->columns != columns)
5737 {
5738 icon_view->priv->columns = columns;
5739
5740 if (icon_view->priv->cell_area)
5741 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5742
5743 gtk_widget_queue_resize (GTK_WIDGET (icon_view));
5744
5745 g_object_notify (G_OBJECT (icon_view), "columns");
5746 }
5747 }
5748
5749 /**
5750 * gtk_icon_view_get_columns:
5751 * @icon_view: a #GtkIconView
5752 *
5753 * Returns the value of the ::columns property.
5754 *
5755 * Returns: the number of columns, or -1
5756 *
5757 * Since: 2.6
5758 */
5759 gint
gtk_icon_view_get_columns(GtkIconView * icon_view)5760 gtk_icon_view_get_columns (GtkIconView *icon_view)
5761 {
5762 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5763
5764 return icon_view->priv->columns;
5765 }
5766
5767 /**
5768 * gtk_icon_view_set_item_width:
5769 * @icon_view: a #GtkIconView
5770 * @item_width: the width for each item
5771 *
5772 * Sets the ::item-width property which specifies the width
5773 * to use for each item. If it is set to -1, the icon view will
5774 * automatically determine a suitable item size.
5775 *
5776 * Since: 2.6
5777 */
5778 void
gtk_icon_view_set_item_width(GtkIconView * icon_view,gint item_width)5779 gtk_icon_view_set_item_width (GtkIconView *icon_view,
5780 gint item_width)
5781 {
5782 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5783
5784 if (icon_view->priv->item_width != item_width)
5785 {
5786 icon_view->priv->item_width = item_width;
5787
5788 if (icon_view->priv->cell_area)
5789 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5790
5791 gtk_icon_view_invalidate_sizes (icon_view);
5792
5793 update_text_cell (icon_view);
5794
5795 g_object_notify (G_OBJECT (icon_view), "item-width");
5796 }
5797 }
5798
5799 /**
5800 * gtk_icon_view_get_item_width:
5801 * @icon_view: a #GtkIconView
5802 *
5803 * Returns the value of the ::item-width property.
5804 *
5805 * Returns: the width of a single item, or -1
5806 *
5807 * Since: 2.6
5808 */
5809 gint
gtk_icon_view_get_item_width(GtkIconView * icon_view)5810 gtk_icon_view_get_item_width (GtkIconView *icon_view)
5811 {
5812 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5813
5814 return icon_view->priv->item_width;
5815 }
5816
5817
5818 /**
5819 * gtk_icon_view_set_spacing:
5820 * @icon_view: a #GtkIconView
5821 * @spacing: the spacing
5822 *
5823 * Sets the ::spacing property which specifies the space
5824 * which is inserted between the cells (i.e. the icon and
5825 * the text) of an item.
5826 *
5827 * Since: 2.6
5828 */
5829 void
gtk_icon_view_set_spacing(GtkIconView * icon_view,gint spacing)5830 gtk_icon_view_set_spacing (GtkIconView *icon_view,
5831 gint spacing)
5832 {
5833 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5834
5835 if (icon_view->priv->spacing != spacing)
5836 {
5837 icon_view->priv->spacing = spacing;
5838
5839 if (icon_view->priv->cell_area)
5840 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5841
5842 gtk_icon_view_invalidate_sizes (icon_view);
5843
5844 g_object_notify (G_OBJECT (icon_view), "spacing");
5845 }
5846 }
5847
5848 /**
5849 * gtk_icon_view_get_spacing:
5850 * @icon_view: a #GtkIconView
5851 *
5852 * Returns the value of the ::spacing property.
5853 *
5854 * Returns: the space between cells
5855 *
5856 * Since: 2.6
5857 */
5858 gint
gtk_icon_view_get_spacing(GtkIconView * icon_view)5859 gtk_icon_view_get_spacing (GtkIconView *icon_view)
5860 {
5861 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5862
5863 return icon_view->priv->spacing;
5864 }
5865
5866 /**
5867 * gtk_icon_view_set_row_spacing:
5868 * @icon_view: a #GtkIconView
5869 * @row_spacing: the row spacing
5870 *
5871 * Sets the ::row-spacing property which specifies the space
5872 * which is inserted between the rows of the icon view.
5873 *
5874 * Since: 2.6
5875 */
5876 void
gtk_icon_view_set_row_spacing(GtkIconView * icon_view,gint row_spacing)5877 gtk_icon_view_set_row_spacing (GtkIconView *icon_view,
5878 gint row_spacing)
5879 {
5880 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5881
5882 if (icon_view->priv->row_spacing != row_spacing)
5883 {
5884 icon_view->priv->row_spacing = row_spacing;
5885
5886 if (icon_view->priv->cell_area)
5887 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5888
5889 gtk_icon_view_invalidate_sizes (icon_view);
5890
5891 g_object_notify (G_OBJECT (icon_view), "row-spacing");
5892 }
5893 }
5894
5895 /**
5896 * gtk_icon_view_get_row_spacing:
5897 * @icon_view: a #GtkIconView
5898 *
5899 * Returns the value of the ::row-spacing property.
5900 *
5901 * Returns: the space between rows
5902 *
5903 * Since: 2.6
5904 */
5905 gint
gtk_icon_view_get_row_spacing(GtkIconView * icon_view)5906 gtk_icon_view_get_row_spacing (GtkIconView *icon_view)
5907 {
5908 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5909
5910 return icon_view->priv->row_spacing;
5911 }
5912
5913 /**
5914 * gtk_icon_view_set_column_spacing:
5915 * @icon_view: a #GtkIconView
5916 * @column_spacing: the column spacing
5917 *
5918 * Sets the ::column-spacing property which specifies the space
5919 * which is inserted between the columns of the icon view.
5920 *
5921 * Since: 2.6
5922 */
5923 void
gtk_icon_view_set_column_spacing(GtkIconView * icon_view,gint column_spacing)5924 gtk_icon_view_set_column_spacing (GtkIconView *icon_view,
5925 gint column_spacing)
5926 {
5927 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5928
5929 if (icon_view->priv->column_spacing != column_spacing)
5930 {
5931 icon_view->priv->column_spacing = column_spacing;
5932
5933 if (icon_view->priv->cell_area)
5934 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5935
5936 gtk_icon_view_invalidate_sizes (icon_view);
5937
5938 g_object_notify (G_OBJECT (icon_view), "column-spacing");
5939 }
5940 }
5941
5942 /**
5943 * gtk_icon_view_get_column_spacing:
5944 * @icon_view: a #GtkIconView
5945 *
5946 * Returns the value of the ::column-spacing property.
5947 *
5948 * Returns: the space between columns
5949 *
5950 * Since: 2.6
5951 */
5952 gint
gtk_icon_view_get_column_spacing(GtkIconView * icon_view)5953 gtk_icon_view_get_column_spacing (GtkIconView *icon_view)
5954 {
5955 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
5956
5957 return icon_view->priv->column_spacing;
5958 }
5959
5960 /**
5961 * gtk_icon_view_set_margin:
5962 * @icon_view: a #GtkIconView
5963 * @margin: the margin
5964 *
5965 * Sets the ::margin property which specifies the space
5966 * which is inserted at the top, bottom, left and right
5967 * of the icon view.
5968 *
5969 * Since: 2.6
5970 */
5971 void
gtk_icon_view_set_margin(GtkIconView * icon_view,gint margin)5972 gtk_icon_view_set_margin (GtkIconView *icon_view,
5973 gint margin)
5974 {
5975 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
5976
5977 if (icon_view->priv->margin != margin)
5978 {
5979 icon_view->priv->margin = margin;
5980
5981 if (icon_view->priv->cell_area)
5982 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
5983
5984 gtk_icon_view_invalidate_sizes (icon_view);
5985
5986 g_object_notify (G_OBJECT (icon_view), "margin");
5987 }
5988 }
5989
5990 /**
5991 * gtk_icon_view_get_margin:
5992 * @icon_view: a #GtkIconView
5993 *
5994 * Returns the value of the ::margin property.
5995 *
5996 * Returns: the space at the borders
5997 *
5998 * Since: 2.6
5999 */
6000 gint
gtk_icon_view_get_margin(GtkIconView * icon_view)6001 gtk_icon_view_get_margin (GtkIconView *icon_view)
6002 {
6003 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
6004
6005 return icon_view->priv->margin;
6006 }
6007
6008 /**
6009 * gtk_icon_view_set_item_padding:
6010 * @icon_view: a #GtkIconView
6011 * @item_padding: the item padding
6012 *
6013 * Sets the #GtkIconView:item-padding property which specifies the padding
6014 * around each of the icon view’s items.
6015 *
6016 * Since: 2.18
6017 */
6018 void
gtk_icon_view_set_item_padding(GtkIconView * icon_view,gint item_padding)6019 gtk_icon_view_set_item_padding (GtkIconView *icon_view,
6020 gint item_padding)
6021 {
6022 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6023
6024 if (icon_view->priv->item_padding != item_padding)
6025 {
6026 icon_view->priv->item_padding = item_padding;
6027
6028 if (icon_view->priv->cell_area)
6029 gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
6030
6031 gtk_icon_view_invalidate_sizes (icon_view);
6032
6033 g_object_notify (G_OBJECT (icon_view), "item-padding");
6034 }
6035 }
6036
6037 /**
6038 * gtk_icon_view_get_item_padding:
6039 * @icon_view: a #GtkIconView
6040 *
6041 * Returns the value of the ::item-padding property.
6042 *
6043 * Returns: the padding around items
6044 *
6045 * Since: 2.18
6046 */
6047 gint
gtk_icon_view_get_item_padding(GtkIconView * icon_view)6048 gtk_icon_view_get_item_padding (GtkIconView *icon_view)
6049 {
6050 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
6051
6052 return icon_view->priv->item_padding;
6053 }
6054
6055 /* Get/set whether drag_motion requested the drag data and
6056 * drag_data_received should thus not actually insert the data,
6057 * since the data doesn’t result from a drop.
6058 */
6059 static void
set_status_pending(GdkDragContext * context,GdkDragAction suggested_action)6060 set_status_pending (GdkDragContext *context,
6061 GdkDragAction suggested_action)
6062 {
6063 g_object_set_data (G_OBJECT (context),
6064 I_("gtk-icon-view-status-pending"),
6065 GINT_TO_POINTER (suggested_action));
6066 }
6067
6068 static GdkDragAction
get_status_pending(GdkDragContext * context)6069 get_status_pending (GdkDragContext *context)
6070 {
6071 return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6072 "gtk-icon-view-status-pending"));
6073 }
6074
6075 static void
unset_reorderable(GtkIconView * icon_view)6076 unset_reorderable (GtkIconView *icon_view)
6077 {
6078 if (icon_view->priv->reorderable)
6079 {
6080 icon_view->priv->reorderable = FALSE;
6081 g_object_notify (G_OBJECT (icon_view), "reorderable");
6082 }
6083 }
6084
6085 static void
set_source_row(GdkDragContext * context,GtkTreeModel * model,GtkTreePath * source_row)6086 set_source_row (GdkDragContext *context,
6087 GtkTreeModel *model,
6088 GtkTreePath *source_row)
6089 {
6090 if (source_row)
6091 g_object_set_data_full (G_OBJECT (context),
6092 I_("gtk-icon-view-source-row"),
6093 gtk_tree_row_reference_new (model, source_row),
6094 (GDestroyNotify) gtk_tree_row_reference_free);
6095 else
6096 g_object_set_data_full (G_OBJECT (context),
6097 I_("gtk-icon-view-source-row"),
6098 NULL, NULL);
6099 }
6100
6101 static GtkTreePath*
get_source_row(GdkDragContext * context)6102 get_source_row (GdkDragContext *context)
6103 {
6104 GtkTreeRowReference *ref;
6105
6106 ref = g_object_get_data (G_OBJECT (context), "gtk-icon-view-source-row");
6107
6108 if (ref)
6109 return gtk_tree_row_reference_get_path (ref);
6110 else
6111 return NULL;
6112 }
6113
6114 typedef struct
6115 {
6116 GtkTreeRowReference *dest_row;
6117 gboolean empty_view_drop;
6118 gboolean drop_append_mode;
6119 } DestRow;
6120
6121 static void
dest_row_free(gpointer data)6122 dest_row_free (gpointer data)
6123 {
6124 DestRow *dr = (DestRow *)data;
6125
6126 gtk_tree_row_reference_free (dr->dest_row);
6127 g_free (dr);
6128 }
6129
6130 static void
set_dest_row(GdkDragContext * context,GtkTreeModel * model,GtkTreePath * dest_row,gboolean empty_view_drop,gboolean drop_append_mode)6131 set_dest_row (GdkDragContext *context,
6132 GtkTreeModel *model,
6133 GtkTreePath *dest_row,
6134 gboolean empty_view_drop,
6135 gboolean drop_append_mode)
6136 {
6137 DestRow *dr;
6138
6139 if (!dest_row)
6140 {
6141 g_object_set_data_full (G_OBJECT (context),
6142 I_("gtk-icon-view-dest-row"),
6143 NULL, NULL);
6144 return;
6145 }
6146
6147 dr = g_new0 (DestRow, 1);
6148
6149 dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6150 dr->empty_view_drop = empty_view_drop;
6151 dr->drop_append_mode = drop_append_mode;
6152 g_object_set_data_full (G_OBJECT (context),
6153 I_("gtk-icon-view-dest-row"),
6154 dr, (GDestroyNotify) dest_row_free);
6155 }
6156
6157 static GtkTreePath*
get_dest_row(GdkDragContext * context)6158 get_dest_row (GdkDragContext *context)
6159 {
6160 DestRow *dr;
6161
6162 dr = g_object_get_data (G_OBJECT (context), "gtk-icon-view-dest-row");
6163
6164 if (dr)
6165 {
6166 GtkTreePath *path = NULL;
6167
6168 if (dr->dest_row)
6169 path = gtk_tree_row_reference_get_path (dr->dest_row);
6170 else if (dr->empty_view_drop)
6171 path = gtk_tree_path_new_from_indices (0, -1);
6172 else
6173 path = NULL;
6174
6175 if (path && dr->drop_append_mode)
6176 gtk_tree_path_next (path);
6177
6178 return path;
6179 }
6180 else
6181 return NULL;
6182 }
6183
6184 static gboolean
check_model_dnd(GtkTreeModel * model,GType required_iface,const gchar * signal)6185 check_model_dnd (GtkTreeModel *model,
6186 GType required_iface,
6187 const gchar *signal)
6188 {
6189 if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6190 {
6191 g_warning ("You must override the default '%s' handler "
6192 "on GtkIconView when using models that don't support "
6193 "the %s interface and enabling drag-and-drop. The simplest way to do this "
6194 "is to connect to '%s' and call "
6195 "g_signal_stop_emission_by_name() in your signal handler to prevent "
6196 "the default handler from running. Look at the source code "
6197 "for the default handler in gtkiconview.c to get an idea what "
6198 "your handler should do. (gtkiconview.c is in the GTK+ source "
6199 "code.) If you're using GTK+ from a language other than C, "
6200 "there may be a more natural way to override default handlers, e.g. via derivation.",
6201 signal, g_type_name (required_iface), signal);
6202 return FALSE;
6203 }
6204 else
6205 return TRUE;
6206 }
6207
6208 static void
remove_scroll_timeout(GtkIconView * icon_view)6209 remove_scroll_timeout (GtkIconView *icon_view)
6210 {
6211 if (icon_view->priv->scroll_timeout_id != 0)
6212 {
6213 g_source_remove (icon_view->priv->scroll_timeout_id);
6214
6215 icon_view->priv->scroll_timeout_id = 0;
6216 }
6217 }
6218
6219 static void
gtk_icon_view_autoscroll(GtkIconView * icon_view)6220 gtk_icon_view_autoscroll (GtkIconView *icon_view)
6221 {
6222 GdkWindow *window;
6223 gint px, py, width, height;
6224 gint hoffset, voffset;
6225
6226 window = gtk_widget_get_window (GTK_WIDGET (icon_view));
6227
6228 px = icon_view->priv->event_last_x;
6229 py = icon_view->priv->event_last_y;
6230 gdk_window_get_geometry (window, NULL, NULL, &width, &height);
6231
6232 /* see if we are near the edge. */
6233 voffset = py - 2 * SCROLL_EDGE_SIZE;
6234 if (voffset > 0)
6235 voffset = MAX (py - (height - 2 * SCROLL_EDGE_SIZE), 0);
6236
6237 hoffset = px - 2 * SCROLL_EDGE_SIZE;
6238 if (hoffset > 0)
6239 hoffset = MAX (px - (width - 2 * SCROLL_EDGE_SIZE), 0);
6240
6241 if (voffset != 0)
6242 gtk_adjustment_set_value (icon_view->priv->vadjustment,
6243 gtk_adjustment_get_value (icon_view->priv->vadjustment) + voffset);
6244
6245 if (hoffset != 0)
6246 gtk_adjustment_set_value (icon_view->priv->hadjustment,
6247 gtk_adjustment_get_value (icon_view->priv->hadjustment) + hoffset);
6248 }
6249
6250 static gboolean
drag_scroll_timeout(gpointer data)6251 drag_scroll_timeout (gpointer data)
6252 {
6253 gtk_icon_view_autoscroll (data);
6254
6255 return TRUE;
6256 }
6257
6258 static gboolean
set_destination(GtkIconView * icon_view,GdkDragContext * context,gint x,gint y,GdkDragAction * suggested_action,GdkAtom * target)6259 set_destination (GtkIconView *icon_view,
6260 GdkDragContext *context,
6261 gint x,
6262 gint y,
6263 GdkDragAction *suggested_action,
6264 GdkAtom *target)
6265 {
6266 GtkWidget *widget;
6267 GtkTreePath *path = NULL;
6268 GtkIconViewDropPosition pos;
6269 GtkIconViewDropPosition old_pos;
6270 GtkTreePath *old_dest_path = NULL;
6271 gboolean can_drop = FALSE;
6272
6273 widget = GTK_WIDGET (icon_view);
6274
6275 *suggested_action = 0;
6276 *target = GDK_NONE;
6277
6278 if (!icon_view->priv->dest_set)
6279 {
6280 /* someone unset us as a drag dest, note that if
6281 * we return FALSE drag_leave isn't called
6282 */
6283
6284 gtk_icon_view_set_drag_dest_item (icon_view,
6285 NULL,
6286 GTK_ICON_VIEW_DROP_LEFT);
6287
6288 remove_scroll_timeout (GTK_ICON_VIEW (widget));
6289
6290 return FALSE; /* no longer a drop site */
6291 }
6292
6293 *target = gtk_drag_dest_find_target (widget, context,
6294 gtk_drag_dest_get_target_list (widget));
6295 if (*target == GDK_NONE)
6296 return FALSE;
6297
6298 if (!gtk_icon_view_get_dest_item_at_pos (icon_view, x, y, &path, &pos))
6299 {
6300 gint n_children;
6301 GtkTreeModel *model;
6302
6303 /* the row got dropped on empty space, let's setup a special case
6304 */
6305
6306 if (path)
6307 gtk_tree_path_free (path);
6308
6309 model = gtk_icon_view_get_model (icon_view);
6310
6311 n_children = gtk_tree_model_iter_n_children (model, NULL);
6312 if (n_children)
6313 {
6314 pos = GTK_ICON_VIEW_DROP_BELOW;
6315 path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6316 }
6317 else
6318 {
6319 pos = GTK_ICON_VIEW_DROP_ABOVE;
6320 path = gtk_tree_path_new_from_indices (0, -1);
6321 }
6322
6323 can_drop = TRUE;
6324
6325 goto out;
6326 }
6327
6328 g_assert (path);
6329
6330 gtk_icon_view_get_drag_dest_item (icon_view,
6331 &old_dest_path,
6332 &old_pos);
6333
6334 if (old_dest_path)
6335 gtk_tree_path_free (old_dest_path);
6336
6337 if (TRUE /* FIXME if the location droppable predicate */)
6338 {
6339 can_drop = TRUE;
6340 }
6341
6342 out:
6343 if (can_drop)
6344 {
6345 GtkWidget *source_widget;
6346
6347 *suggested_action = gdk_drag_context_get_suggested_action (context);
6348 source_widget = gtk_drag_get_source_widget (context);
6349
6350 if (source_widget == widget)
6351 {
6352 /* Default to MOVE, unless the user has
6353 * pressed ctrl or shift to affect available actions
6354 */
6355 if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
6356 *suggested_action = GDK_ACTION_MOVE;
6357 }
6358
6359 gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
6360 path, pos);
6361 }
6362 else
6363 {
6364 /* can't drop here */
6365 gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
6366 NULL,
6367 GTK_ICON_VIEW_DROP_LEFT);
6368 }
6369
6370 if (path)
6371 gtk_tree_path_free (path);
6372
6373 return TRUE;
6374 }
6375
6376 static GtkTreePath*
get_logical_destination(GtkIconView * icon_view,gboolean * drop_append_mode)6377 get_logical_destination (GtkIconView *icon_view,
6378 gboolean *drop_append_mode)
6379 {
6380 /* adjust path to point to the row the drop goes in front of */
6381 GtkTreePath *path = NULL;
6382 GtkIconViewDropPosition pos;
6383
6384 *drop_append_mode = FALSE;
6385
6386 gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
6387
6388 if (path == NULL)
6389 return NULL;
6390
6391 if (pos == GTK_ICON_VIEW_DROP_RIGHT ||
6392 pos == GTK_ICON_VIEW_DROP_BELOW)
6393 {
6394 GtkTreeIter iter;
6395 GtkTreeModel *model = icon_view->priv->model;
6396
6397 if (!gtk_tree_model_get_iter (model, &iter, path) ||
6398 !gtk_tree_model_iter_next (model, &iter))
6399 *drop_append_mode = TRUE;
6400 else
6401 {
6402 *drop_append_mode = FALSE;
6403 gtk_tree_path_next (path);
6404 }
6405 }
6406
6407 return path;
6408 }
6409
6410 static gboolean
gtk_icon_view_maybe_begin_drag(GtkIconView * icon_view,GdkEventMotion * event)6411 gtk_icon_view_maybe_begin_drag (GtkIconView *icon_view,
6412 GdkEventMotion *event)
6413 {
6414 GtkWidget *widget = GTK_WIDGET (icon_view);
6415 GdkDragContext *context;
6416 GtkTreePath *path = NULL;
6417 gint button;
6418 GtkTreeModel *model;
6419 gboolean retval = FALSE;
6420
6421 if (!icon_view->priv->source_set)
6422 goto out;
6423
6424 if (icon_view->priv->pressed_button < 0)
6425 goto out;
6426
6427 if (!gtk_drag_check_threshold (GTK_WIDGET (icon_view),
6428 icon_view->priv->press_start_x,
6429 icon_view->priv->press_start_y,
6430 event->x, event->y))
6431 goto out;
6432
6433 model = gtk_icon_view_get_model (icon_view);
6434
6435 if (model == NULL)
6436 goto out;
6437
6438 button = icon_view->priv->pressed_button;
6439 icon_view->priv->pressed_button = -1;
6440
6441 path = gtk_icon_view_get_path_at_pos (icon_view,
6442 icon_view->priv->press_start_x,
6443 icon_view->priv->press_start_y);
6444
6445 if (path == NULL)
6446 goto out;
6447
6448 if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
6449 !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
6450 path))
6451 goto out;
6452
6453 /* FIXME Check whether we're a start button, if not return FALSE and
6454 * free path
6455 */
6456
6457 /* Now we can begin the drag */
6458
6459 retval = TRUE;
6460
6461 context = gtk_drag_begin_with_coordinates (widget,
6462 gtk_drag_source_get_target_list (widget),
6463 icon_view->priv->source_actions,
6464 button,
6465 (GdkEvent*)event,
6466 icon_view->priv->press_start_x,
6467 icon_view->priv->press_start_y);
6468
6469 set_source_row (context, model, path);
6470
6471 out:
6472 if (path)
6473 gtk_tree_path_free (path);
6474
6475 return retval;
6476 }
6477
6478 /* Source side drag signals */
6479 static void
gtk_icon_view_drag_begin(GtkWidget * widget,GdkDragContext * context)6480 gtk_icon_view_drag_begin (GtkWidget *widget,
6481 GdkDragContext *context)
6482 {
6483 GtkIconView *icon_view;
6484 GtkIconViewItem *item;
6485 cairo_surface_t *icon;
6486 gint x, y;
6487 GtkTreePath *path;
6488 double sx, sy;
6489
6490 icon_view = GTK_ICON_VIEW (widget);
6491
6492 /* if the user uses a custom DnD impl, we don't set the icon here */
6493 if (!icon_view->priv->dest_set && !icon_view->priv->source_set)
6494 return;
6495
6496 item = _gtk_icon_view_get_item_at_coords (icon_view,
6497 icon_view->priv->press_start_x,
6498 icon_view->priv->press_start_y,
6499 TRUE,
6500 NULL);
6501
6502 g_return_if_fail (item != NULL);
6503
6504 x = icon_view->priv->press_start_x - item->cell_area.x + icon_view->priv->item_padding;
6505 y = icon_view->priv->press_start_y - item->cell_area.y + icon_view->priv->item_padding;
6506
6507 path = gtk_tree_path_new_from_indices (item->index, -1);
6508 icon = gtk_icon_view_create_drag_icon (icon_view, path);
6509 gtk_tree_path_free (path);
6510
6511 cairo_surface_get_device_scale (icon, &sx, &sy);
6512 cairo_surface_set_device_offset (icon, -x * sx, -y * sy);
6513
6514 gtk_drag_set_icon_surface (context, icon);
6515
6516 cairo_surface_destroy (icon);
6517 }
6518
6519 static void
gtk_icon_view_drag_end(GtkWidget * widget,GdkDragContext * context)6520 gtk_icon_view_drag_end (GtkWidget *widget,
6521 GdkDragContext *context)
6522 {
6523 /* do nothing */
6524 }
6525
6526 static void
gtk_icon_view_drag_data_get(GtkWidget * widget,GdkDragContext * context,GtkSelectionData * selection_data,guint info,guint time)6527 gtk_icon_view_drag_data_get (GtkWidget *widget,
6528 GdkDragContext *context,
6529 GtkSelectionData *selection_data,
6530 guint info,
6531 guint time)
6532 {
6533 GtkIconView *icon_view;
6534 GtkTreeModel *model;
6535 GtkTreePath *source_row;
6536
6537 icon_view = GTK_ICON_VIEW (widget);
6538 model = gtk_icon_view_get_model (icon_view);
6539
6540 if (model == NULL)
6541 return;
6542
6543 if (!icon_view->priv->source_set)
6544 return;
6545
6546 source_row = get_source_row (context);
6547
6548 if (source_row == NULL)
6549 return;
6550
6551 /* We can implement the GTK_TREE_MODEL_ROW target generically for
6552 * any model; for DragSource models there are some other targets
6553 * we also support.
6554 */
6555
6556 if (GTK_IS_TREE_DRAG_SOURCE (model) &&
6557 gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
6558 source_row,
6559 selection_data))
6560 goto done;
6561
6562 /* If drag_data_get does nothing, try providing row data. */
6563 if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6564 gtk_tree_set_row_drag_data (selection_data,
6565 model,
6566 source_row);
6567
6568 done:
6569 gtk_tree_path_free (source_row);
6570 }
6571
6572 static void
gtk_icon_view_drag_data_delete(GtkWidget * widget,GdkDragContext * context)6573 gtk_icon_view_drag_data_delete (GtkWidget *widget,
6574 GdkDragContext *context)
6575 {
6576 GtkTreeModel *model;
6577 GtkIconView *icon_view;
6578 GtkTreePath *source_row;
6579
6580 icon_view = GTK_ICON_VIEW (widget);
6581 model = gtk_icon_view_get_model (icon_view);
6582
6583 if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag-data-delete"))
6584 return;
6585
6586 if (!icon_view->priv->source_set)
6587 return;
6588
6589 source_row = get_source_row (context);
6590
6591 if (source_row == NULL)
6592 return;
6593
6594 gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
6595 source_row);
6596
6597 gtk_tree_path_free (source_row);
6598
6599 set_source_row (context, NULL, NULL);
6600 }
6601
6602 /* Target side drag signals */
6603 static void
gtk_icon_view_drag_leave(GtkWidget * widget,GdkDragContext * context,guint time)6604 gtk_icon_view_drag_leave (GtkWidget *widget,
6605 GdkDragContext *context,
6606 guint time)
6607 {
6608 GtkIconView *icon_view;
6609
6610 icon_view = GTK_ICON_VIEW (widget);
6611
6612 /* unset any highlight row */
6613 gtk_icon_view_set_drag_dest_item (icon_view,
6614 NULL,
6615 GTK_ICON_VIEW_DROP_LEFT);
6616
6617 remove_scroll_timeout (icon_view);
6618 }
6619
6620 static gboolean
gtk_icon_view_drag_motion(GtkWidget * widget,GdkDragContext * context,gint x,gint y,guint time)6621 gtk_icon_view_drag_motion (GtkWidget *widget,
6622 GdkDragContext *context,
6623 gint x,
6624 gint y,
6625 guint time)
6626 {
6627 GtkTreePath *path = NULL;
6628 GtkIconViewDropPosition pos;
6629 GtkIconView *icon_view;
6630 GdkDragAction suggested_action = 0;
6631 GdkAtom target;
6632 gboolean empty;
6633
6634 icon_view = GTK_ICON_VIEW (widget);
6635
6636 if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
6637 return FALSE;
6638
6639 icon_view->priv->event_last_x = x;
6640 icon_view->priv->event_last_y = y;
6641
6642 gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
6643
6644 /* we only know this *after* set_desination_row */
6645 empty = icon_view->priv->empty_view_drop;
6646
6647 if (path == NULL && !empty)
6648 {
6649 /* Can't drop here. */
6650 gdk_drag_status (context, 0, time);
6651 }
6652 else
6653 {
6654 if (icon_view->priv->scroll_timeout_id == 0)
6655 {
6656 icon_view->priv->scroll_timeout_id =
6657 gdk_threads_add_timeout (50, drag_scroll_timeout, icon_view);
6658 g_source_set_name_by_id (icon_view->priv->scroll_timeout_id, "[gtk+] drag_scroll_timeout");
6659 }
6660
6661 if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
6662 {
6663 /* Request data so we can use the source row when
6664 * determining whether to accept the drop
6665 */
6666 set_status_pending (context, suggested_action);
6667 gtk_drag_get_data (widget, context, target, time);
6668 }
6669 else
6670 {
6671 set_status_pending (context, 0);
6672 gdk_drag_status (context, suggested_action, time);
6673 }
6674 }
6675
6676 if (path)
6677 gtk_tree_path_free (path);
6678
6679 return TRUE;
6680 }
6681
6682 static gboolean
gtk_icon_view_drag_drop(GtkWidget * widget,GdkDragContext * context,gint x,gint y,guint time)6683 gtk_icon_view_drag_drop (GtkWidget *widget,
6684 GdkDragContext *context,
6685 gint x,
6686 gint y,
6687 guint time)
6688 {
6689 GtkIconView *icon_view;
6690 GtkTreePath *path;
6691 GdkDragAction suggested_action = 0;
6692 GdkAtom target = GDK_NONE;
6693 GtkTreeModel *model;
6694 gboolean drop_append_mode;
6695
6696 icon_view = GTK_ICON_VIEW (widget);
6697 model = gtk_icon_view_get_model (icon_view);
6698
6699 remove_scroll_timeout (GTK_ICON_VIEW (widget));
6700
6701 if (!icon_view->priv->dest_set)
6702 return FALSE;
6703
6704 if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag-drop"))
6705 return FALSE;
6706
6707 if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
6708 return FALSE;
6709
6710 path = get_logical_destination (icon_view, &drop_append_mode);
6711
6712 if (target != GDK_NONE && path != NULL)
6713 {
6714 /* in case a motion had requested drag data, change things so we
6715 * treat drag data receives as a drop.
6716 */
6717 set_status_pending (context, 0);
6718 set_dest_row (context, model, path,
6719 icon_view->priv->empty_view_drop, drop_append_mode);
6720 }
6721
6722 if (path)
6723 gtk_tree_path_free (path);
6724
6725 /* Unset this thing */
6726 gtk_icon_view_set_drag_dest_item (icon_view, NULL, GTK_ICON_VIEW_DROP_LEFT);
6727
6728 if (target != GDK_NONE)
6729 {
6730 gtk_drag_get_data (widget, context, target, time);
6731 return TRUE;
6732 }
6733 else
6734 return FALSE;
6735 }
6736
6737 static void
gtk_icon_view_drag_data_received(GtkWidget * widget,GdkDragContext * context,gint x,gint y,GtkSelectionData * selection_data,guint info,guint time)6738 gtk_icon_view_drag_data_received (GtkWidget *widget,
6739 GdkDragContext *context,
6740 gint x,
6741 gint y,
6742 GtkSelectionData *selection_data,
6743 guint info,
6744 guint time)
6745 {
6746 GtkTreePath *path;
6747 gboolean accepted = FALSE;
6748 GtkTreeModel *model;
6749 GtkIconView *icon_view;
6750 GtkTreePath *dest_row;
6751 GdkDragAction suggested_action;
6752 gboolean drop_append_mode;
6753
6754 icon_view = GTK_ICON_VIEW (widget);
6755 model = gtk_icon_view_get_model (icon_view);
6756
6757 if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag-data-received"))
6758 return;
6759
6760 if (!icon_view->priv->dest_set)
6761 return;
6762
6763 suggested_action = get_status_pending (context);
6764
6765 if (suggested_action)
6766 {
6767 /* We are getting this data due to a request in drag_motion,
6768 * rather than due to a request in drag_drop, so we are just
6769 * supposed to call drag_status, not actually paste in the
6770 * data.
6771 */
6772 path = get_logical_destination (icon_view, &drop_append_mode);
6773
6774 if (path == NULL)
6775 suggested_action = 0;
6776
6777 if (suggested_action)
6778 {
6779 if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
6780 path,
6781 selection_data))
6782 suggested_action = 0;
6783 }
6784
6785 gdk_drag_status (context, suggested_action, time);
6786
6787 if (path)
6788 gtk_tree_path_free (path);
6789
6790 /* If you can't drop, remove user drop indicator until the next motion */
6791 if (suggested_action == 0)
6792 gtk_icon_view_set_drag_dest_item (icon_view,
6793 NULL,
6794 GTK_ICON_VIEW_DROP_LEFT);
6795 return;
6796 }
6797
6798
6799 dest_row = get_dest_row (context);
6800
6801 if (dest_row == NULL)
6802 return;
6803
6804 if (gtk_selection_data_get_length (selection_data) >= 0)
6805 {
6806 if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
6807 dest_row,
6808 selection_data))
6809 accepted = TRUE;
6810 }
6811
6812 gtk_drag_finish (context,
6813 accepted,
6814 (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
6815 time);
6816
6817 gtk_tree_path_free (dest_row);
6818
6819 /* drop dest_row */
6820 set_dest_row (context, NULL, NULL, FALSE, FALSE);
6821 }
6822
6823 /* Drag-and-Drop support */
6824 /**
6825 * gtk_icon_view_enable_model_drag_source:
6826 * @icon_view: a #GtkIconView
6827 * @start_button_mask: Mask of allowed buttons to start drag
6828 * @targets: (array length=n_targets): the table of targets that the drag will
6829 * support
6830 * @n_targets: the number of items in @targets
6831 * @actions: the bitmask of possible actions for a drag from this
6832 * widget
6833 *
6834 * Turns @icon_view into a drag source for automatic DND. Calling this
6835 * method sets #GtkIconView:reorderable to %FALSE.
6836 *
6837 * Since: 2.8
6838 **/
6839 void
gtk_icon_view_enable_model_drag_source(GtkIconView * icon_view,GdkModifierType start_button_mask,const GtkTargetEntry * targets,gint n_targets,GdkDragAction actions)6840 gtk_icon_view_enable_model_drag_source (GtkIconView *icon_view,
6841 GdkModifierType start_button_mask,
6842 const GtkTargetEntry *targets,
6843 gint n_targets,
6844 GdkDragAction actions)
6845 {
6846 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6847
6848 gtk_drag_source_set (GTK_WIDGET (icon_view), 0, targets, n_targets, actions);
6849
6850 icon_view->priv->start_button_mask = start_button_mask;
6851 icon_view->priv->source_actions = actions;
6852
6853 icon_view->priv->source_set = TRUE;
6854
6855 unset_reorderable (icon_view);
6856 }
6857
6858 /**
6859 * gtk_icon_view_enable_model_drag_dest:
6860 * @icon_view: a #GtkIconView
6861 * @targets: (array length=n_targets): the table of targets that the drag will
6862 * support
6863 * @n_targets: the number of items in @targets
6864 * @actions: the bitmask of possible actions for a drag to this
6865 * widget
6866 *
6867 * Turns @icon_view into a drop destination for automatic DND. Calling this
6868 * method sets #GtkIconView:reorderable to %FALSE.
6869 *
6870 * Since: 2.8
6871 **/
6872 void
gtk_icon_view_enable_model_drag_dest(GtkIconView * icon_view,const GtkTargetEntry * targets,gint n_targets,GdkDragAction actions)6873 gtk_icon_view_enable_model_drag_dest (GtkIconView *icon_view,
6874 const GtkTargetEntry *targets,
6875 gint n_targets,
6876 GdkDragAction actions)
6877 {
6878 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6879
6880 gtk_drag_dest_set (GTK_WIDGET (icon_view), 0, targets, n_targets, actions);
6881
6882 icon_view->priv->dest_actions = actions;
6883
6884 icon_view->priv->dest_set = TRUE;
6885
6886 unset_reorderable (icon_view);
6887 }
6888
6889 /**
6890 * gtk_icon_view_unset_model_drag_source:
6891 * @icon_view: a #GtkIconView
6892 *
6893 * Undoes the effect of gtk_icon_view_enable_model_drag_source(). Calling this
6894 * method sets #GtkIconView:reorderable to %FALSE.
6895 *
6896 * Since: 2.8
6897 **/
6898 void
gtk_icon_view_unset_model_drag_source(GtkIconView * icon_view)6899 gtk_icon_view_unset_model_drag_source (GtkIconView *icon_view)
6900 {
6901 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6902
6903 if (icon_view->priv->source_set)
6904 {
6905 gtk_drag_source_unset (GTK_WIDGET (icon_view));
6906 icon_view->priv->source_set = FALSE;
6907 }
6908
6909 unset_reorderable (icon_view);
6910 }
6911
6912 /**
6913 * gtk_icon_view_unset_model_drag_dest:
6914 * @icon_view: a #GtkIconView
6915 *
6916 * Undoes the effect of gtk_icon_view_enable_model_drag_dest(). Calling this
6917 * method sets #GtkIconView:reorderable to %FALSE.
6918 *
6919 * Since: 2.8
6920 **/
6921 void
gtk_icon_view_unset_model_drag_dest(GtkIconView * icon_view)6922 gtk_icon_view_unset_model_drag_dest (GtkIconView *icon_view)
6923 {
6924 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6925
6926 if (icon_view->priv->dest_set)
6927 {
6928 gtk_drag_dest_unset (GTK_WIDGET (icon_view));
6929 icon_view->priv->dest_set = FALSE;
6930 }
6931
6932 unset_reorderable (icon_view);
6933 }
6934
6935 /* These are useful to implement your own custom stuff. */
6936 /**
6937 * gtk_icon_view_set_drag_dest_item:
6938 * @icon_view: a #GtkIconView
6939 * @path: (allow-none): The path of the item to highlight, or %NULL.
6940 * @pos: Specifies where to drop, relative to the item
6941 *
6942 * Sets the item that is highlighted for feedback.
6943 *
6944 * Since: 2.8
6945 */
6946 void
gtk_icon_view_set_drag_dest_item(GtkIconView * icon_view,GtkTreePath * path,GtkIconViewDropPosition pos)6947 gtk_icon_view_set_drag_dest_item (GtkIconView *icon_view,
6948 GtkTreePath *path,
6949 GtkIconViewDropPosition pos)
6950 {
6951 /* Note; this function is exported to allow a custom DND
6952 * implementation, so it can't touch TreeViewDragInfo
6953 */
6954
6955 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
6956
6957 if (icon_view->priv->dest_item)
6958 {
6959 GtkTreePath *current_path;
6960 current_path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
6961 gtk_tree_row_reference_free (icon_view->priv->dest_item);
6962 icon_view->priv->dest_item = NULL;
6963
6964 gtk_icon_view_queue_draw_path (icon_view, current_path);
6965 gtk_tree_path_free (current_path);
6966 }
6967
6968 /* special case a drop on an empty model */
6969 icon_view->priv->empty_view_drop = FALSE;
6970 if (pos == GTK_ICON_VIEW_DROP_ABOVE && path
6971 && gtk_tree_path_get_depth (path) == 1
6972 && gtk_tree_path_get_indices (path)[0] == 0)
6973 {
6974 gint n_children;
6975
6976 n_children = gtk_tree_model_iter_n_children (icon_view->priv->model,
6977 NULL);
6978
6979 if (n_children == 0)
6980 icon_view->priv->empty_view_drop = TRUE;
6981 }
6982
6983 icon_view->priv->dest_pos = pos;
6984
6985 if (path)
6986 {
6987 icon_view->priv->dest_item =
6988 gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view),
6989 icon_view->priv->model, path);
6990
6991 gtk_icon_view_queue_draw_path (icon_view, path);
6992 }
6993 }
6994
6995 /**
6996 * gtk_icon_view_get_drag_dest_item:
6997 * @icon_view: a #GtkIconView
6998 * @path: (out) (allow-none): Return location for the path of
6999 * the highlighted item, or %NULL.
7000 * @pos: (out) (allow-none): Return location for the drop position, or %NULL
7001 *
7002 * Gets information about the item that is highlighted for feedback.
7003 *
7004 * Since: 2.8
7005 **/
7006 void
gtk_icon_view_get_drag_dest_item(GtkIconView * icon_view,GtkTreePath ** path,GtkIconViewDropPosition * pos)7007 gtk_icon_view_get_drag_dest_item (GtkIconView *icon_view,
7008 GtkTreePath **path,
7009 GtkIconViewDropPosition *pos)
7010 {
7011 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
7012
7013 if (path)
7014 {
7015 if (icon_view->priv->dest_item)
7016 *path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
7017 else
7018 *path = NULL;
7019 }
7020
7021 if (pos)
7022 *pos = icon_view->priv->dest_pos;
7023 }
7024
7025 /**
7026 * gtk_icon_view_get_dest_item_at_pos:
7027 * @icon_view: a #GtkIconView
7028 * @drag_x: the position to determine the destination item for
7029 * @drag_y: the position to determine the destination item for
7030 * @path: (out) (allow-none): Return location for the path of the item,
7031 * or %NULL.
7032 * @pos: (out) (allow-none): Return location for the drop position, or %NULL
7033 *
7034 * Determines the destination item for a given position.
7035 *
7036 * Returns: whether there is an item at the given position.
7037 *
7038 * Since: 2.8
7039 **/
7040 gboolean
gtk_icon_view_get_dest_item_at_pos(GtkIconView * icon_view,gint drag_x,gint drag_y,GtkTreePath ** path,GtkIconViewDropPosition * pos)7041 gtk_icon_view_get_dest_item_at_pos (GtkIconView *icon_view,
7042 gint drag_x,
7043 gint drag_y,
7044 GtkTreePath **path,
7045 GtkIconViewDropPosition *pos)
7046 {
7047 GtkIconViewItem *item;
7048
7049 /* Note; this function is exported to allow a custom DND
7050 * implementation, so it can't touch TreeViewDragInfo
7051 */
7052
7053 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
7054 g_return_val_if_fail (drag_x >= 0, FALSE);
7055 g_return_val_if_fail (drag_y >= 0, FALSE);
7056 g_return_val_if_fail (icon_view->priv->bin_window != NULL, FALSE);
7057
7058
7059 if (path)
7060 *path = NULL;
7061
7062 item = _gtk_icon_view_get_item_at_coords (icon_view,
7063 drag_x + gtk_adjustment_get_value (icon_view->priv->hadjustment),
7064 drag_y + gtk_adjustment_get_value (icon_view->priv->vadjustment),
7065 FALSE, NULL);
7066
7067 if (item == NULL)
7068 return FALSE;
7069
7070 if (path)
7071 *path = gtk_tree_path_new_from_indices (item->index, -1);
7072
7073 if (pos)
7074 {
7075 if (drag_x < item->cell_area.x + item->cell_area.width / 4)
7076 *pos = GTK_ICON_VIEW_DROP_LEFT;
7077 else if (drag_x > item->cell_area.x + item->cell_area.width * 3 / 4)
7078 *pos = GTK_ICON_VIEW_DROP_RIGHT;
7079 else if (drag_y < item->cell_area.y + item->cell_area.height / 4)
7080 *pos = GTK_ICON_VIEW_DROP_ABOVE;
7081 else if (drag_y > item->cell_area.y + item->cell_area.height * 3 / 4)
7082 *pos = GTK_ICON_VIEW_DROP_BELOW;
7083 else
7084 *pos = GTK_ICON_VIEW_DROP_INTO;
7085 }
7086
7087 return TRUE;
7088 }
7089
7090 /**
7091 * gtk_icon_view_create_drag_icon:
7092 * @icon_view: a #GtkIconView
7093 * @path: a #GtkTreePath in @icon_view
7094 *
7095 * Creates a #cairo_surface_t representation of the item at @path.
7096 * This image is used for a drag icon.
7097 *
7098 * Returns: (transfer full): a newly-allocated surface of the drag icon.
7099 *
7100 * Since: 2.8
7101 **/
7102 cairo_surface_t *
gtk_icon_view_create_drag_icon(GtkIconView * icon_view,GtkTreePath * path)7103 gtk_icon_view_create_drag_icon (GtkIconView *icon_view,
7104 GtkTreePath *path)
7105 {
7106 GtkWidget *widget;
7107 cairo_t *cr;
7108 cairo_surface_t *surface;
7109 GList *l;
7110 gint index;
7111
7112 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
7113 g_return_val_if_fail (path != NULL, NULL);
7114
7115 widget = GTK_WIDGET (icon_view);
7116
7117 if (!gtk_widget_get_realized (widget))
7118 return NULL;
7119
7120 index = gtk_tree_path_get_indices (path)[0];
7121
7122 for (l = icon_view->priv->items; l; l = l->next)
7123 {
7124 GtkIconViewItem *item = l->data;
7125
7126 if (index == item->index)
7127 {
7128 GdkRectangle rect = {
7129 item->cell_area.x - icon_view->priv->item_padding,
7130 item->cell_area.y - icon_view->priv->item_padding,
7131 item->cell_area.width + icon_view->priv->item_padding * 2,
7132 item->cell_area.height + icon_view->priv->item_padding * 2
7133 };
7134
7135 surface = gdk_window_create_similar_surface (icon_view->priv->bin_window,
7136 CAIRO_CONTENT_COLOR_ALPHA,
7137 rect.width,
7138 rect.height);
7139
7140 cr = cairo_create (surface);
7141
7142 gtk_icon_view_paint_item (icon_view, cr, item,
7143 icon_view->priv->item_padding,
7144 icon_view->priv->item_padding,
7145 FALSE);
7146
7147 cairo_destroy (cr);
7148
7149 return surface;
7150 }
7151 }
7152
7153 return NULL;
7154 }
7155
7156 /**
7157 * gtk_icon_view_get_reorderable:
7158 * @icon_view: a #GtkIconView
7159 *
7160 * Retrieves whether the user can reorder the list via drag-and-drop.
7161 * See gtk_icon_view_set_reorderable().
7162 *
7163 * Returns: %TRUE if the list can be reordered.
7164 *
7165 * Since: 2.8
7166 **/
7167 gboolean
gtk_icon_view_get_reorderable(GtkIconView * icon_view)7168 gtk_icon_view_get_reorderable (GtkIconView *icon_view)
7169 {
7170 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
7171
7172 return icon_view->priv->reorderable;
7173 }
7174
7175 static const GtkTargetEntry item_targets[] = {
7176 { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
7177 };
7178
7179
7180 /**
7181 * gtk_icon_view_set_reorderable:
7182 * @icon_view: A #GtkIconView.
7183 * @reorderable: %TRUE, if the list of items can be reordered.
7184 *
7185 * This function is a convenience function to allow you to reorder models that
7186 * support the #GtkTreeDragSourceIface and the #GtkTreeDragDestIface. Both
7187 * #GtkTreeStore and #GtkListStore support these. If @reorderable is %TRUE, then
7188 * the user can reorder the model by dragging and dropping rows. The
7189 * developer can listen to these changes by connecting to the model's
7190 * row_inserted and row_deleted signals. The reordering is implemented by setting up
7191 * the icon view as a drag source and destination. Therefore, drag and
7192 * drop can not be used in a reorderable view for any other purpose.
7193 *
7194 * This function does not give you any degree of control over the order -- any
7195 * reordering is allowed. If more control is needed, you should probably
7196 * handle drag and drop manually.
7197 *
7198 * Since: 2.8
7199 **/
7200 void
gtk_icon_view_set_reorderable(GtkIconView * icon_view,gboolean reorderable)7201 gtk_icon_view_set_reorderable (GtkIconView *icon_view,
7202 gboolean reorderable)
7203 {
7204 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
7205
7206 reorderable = reorderable != FALSE;
7207
7208 if (icon_view->priv->reorderable == reorderable)
7209 return;
7210
7211 if (reorderable)
7212 {
7213 gtk_icon_view_enable_model_drag_source (icon_view,
7214 GDK_BUTTON1_MASK,
7215 item_targets,
7216 G_N_ELEMENTS (item_targets),
7217 GDK_ACTION_MOVE);
7218 gtk_icon_view_enable_model_drag_dest (icon_view,
7219 item_targets,
7220 G_N_ELEMENTS (item_targets),
7221 GDK_ACTION_MOVE);
7222 }
7223 else
7224 {
7225 gtk_icon_view_unset_model_drag_source (icon_view);
7226 gtk_icon_view_unset_model_drag_dest (icon_view);
7227 }
7228
7229 icon_view->priv->reorderable = reorderable;
7230
7231 g_object_notify (G_OBJECT (icon_view), "reorderable");
7232 }
7233
7234 /**
7235 * gtk_icon_view_set_activate_on_single_click:
7236 * @icon_view: a #GtkIconView
7237 * @single: %TRUE to emit item-activated on a single click
7238 *
7239 * Causes the #GtkIconView::item-activated signal to be emitted on
7240 * a single click instead of a double click.
7241 *
7242 * Since: 3.8
7243 **/
7244 void
gtk_icon_view_set_activate_on_single_click(GtkIconView * icon_view,gboolean single)7245 gtk_icon_view_set_activate_on_single_click (GtkIconView *icon_view,
7246 gboolean single)
7247 {
7248 g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
7249
7250 single = single != FALSE;
7251
7252 if (icon_view->priv->activate_on_single_click == single)
7253 return;
7254
7255 icon_view->priv->activate_on_single_click = single;
7256 g_object_notify (G_OBJECT (icon_view), "activate-on-single-click");
7257 }
7258
7259 /**
7260 * gtk_icon_view_get_activate_on_single_click:
7261 * @icon_view: a #GtkIconView
7262 *
7263 * Gets the setting set by gtk_icon_view_set_activate_on_single_click().
7264 *
7265 * Returns: %TRUE if item-activated will be emitted on a single click
7266 *
7267 * Since: 3.8
7268 **/
7269 gboolean
gtk_icon_view_get_activate_on_single_click(GtkIconView * icon_view)7270 gtk_icon_view_get_activate_on_single_click (GtkIconView *icon_view)
7271 {
7272 g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
7273
7274 return icon_view->priv->activate_on_single_click;
7275 }
7276
7277 static gboolean
gtk_icon_view_buildable_custom_tag_start(GtkBuildable * buildable,GtkBuilder * builder,GObject * child,const gchar * tagname,GMarkupParser * parser,gpointer * data)7278 gtk_icon_view_buildable_custom_tag_start (GtkBuildable *buildable,
7279 GtkBuilder *builder,
7280 GObject *child,
7281 const gchar *tagname,
7282 GMarkupParser *parser,
7283 gpointer *data)
7284 {
7285 if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
7286 tagname, parser, data))
7287 return TRUE;
7288
7289 return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
7290 tagname, parser, data);
7291 }
7292
7293 static void
gtk_icon_view_buildable_custom_tag_end(GtkBuildable * buildable,GtkBuilder * builder,GObject * child,const gchar * tagname,gpointer * data)7294 gtk_icon_view_buildable_custom_tag_end (GtkBuildable *buildable,
7295 GtkBuilder *builder,
7296 GObject *child,
7297 const gchar *tagname,
7298 gpointer *data)
7299 {
7300 if (!_gtk_cell_layout_buildable_custom_tag_end (buildable, builder,
7301 child, tagname, data))
7302 parent_buildable_iface->custom_tag_end (buildable, builder,
7303 child, tagname, data);
7304 }
7305