1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser 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.
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 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
22 * file for a list of people on the GTK+ Team. See the ChangeLog
23 * files for a list of changes. These files are distributed with
24 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
35 #include "gtkiconfactory.h"
36 #include "gtkicontheme.h"
38 #include "gtkinvisible.h"
42 #include "gtkwindow.h"
44 #include "gtkquartz.h"
45 #include "gdk/quartz/gdkquartz.h"
46 #include "gtkselectionprivate.h"
48 typedef struct _GtkDragSourceSite GtkDragSourceSite;
49 typedef struct _GtkDragSourceInfo GtkDragSourceInfo;
50 typedef struct _GtkDragDestSite GtkDragDestSite;
51 typedef struct _GtkDragDestInfo GtkDragDestInfo;
52 typedef struct _GtkDragFindData GtkDragFindData;
54 static void gtk_drag_find_widget (GtkWidget *widget,
55 GtkDragFindData *data);
56 static void gtk_drag_dest_site_destroy (gpointer data);
57 static void gtk_drag_dest_leave (GtkWidget *widget,
58 GdkDragContext *context,
60 static GtkDragDestInfo *gtk_drag_get_dest_info (GdkDragContext *context,
62 static void gtk_drag_source_site_destroy (gpointer data);
64 static GtkDragSourceInfo *gtk_drag_get_source_info (GdkDragContext *context,
67 extern GdkDragContext *gdk_quartz_drag_source_context (); /* gdk/quartz/gdkdnd-quartz.c */
69 struct _GtkDragSourceSite
71 GdkModifierType start_button_mask;
72 GtkTargetList *target_list; /* Targets for drag data */
73 GdkDragAction actions; /* Possible actions */
76 GtkImageType icon_type;
79 GtkImagePixbufData pixbuf;
80 GtkImageStockData stock;
81 GtkImageIconNameData name;
84 /* Stored button press information to detect drag beginning */
89 struct _GtkDragSourceInfo
91 GtkWidget *source_widget;
93 GtkTargetList *target_list; /* Targets for drag data */
94 GdkDragAction possible_actions; /* Actions allowed by source */
95 GdkDragContext *context; /* drag context */
96 NSEvent *nsevent; /* what started it */
97 gint hot_x, hot_y; /* Hot spot for drag */
98 GdkPixbuf *icon_pixbuf;
103 struct _GtkDragDestSite
105 GtkDestDefaults flags;
106 GtkTargetList *target_list;
107 GdkDragAction actions;
109 guint track_motion : 1;
112 struct _GtkDragDestInfo
114 GtkWidget *widget; /* Widget in which drag is in */
115 GdkDragContext *context; /* Drag context */
116 guint dropped : 1; /* Set after we receive a drop */
117 gint drop_x, drop_y; /* Position of drop */
120 struct _GtkDragFindData
124 GdkDragContext *context;
125 GtkDragDestInfo *info;
128 gboolean (*callback) (GtkWidget *widget, GdkDragContext *context,
129 gint x, gint y, guint32 time);
134 @interface GtkDragSourceOwner : NSObject {
135 GtkDragSourceInfo *info;
140 @implementation GtkDragSourceOwner
141 -(void)pasteboard:(NSPasteboard *)sender provideDataForType:(NSString *)type
144 GtkSelectionData selection_data;
146 selection_data.selection = GDK_NONE;
147 selection_data.data = NULL;
148 selection_data.length = -1;
149 selection_data.target = _gtk_quartz_pasteboard_type_to_atom (type);
151 if (gtk_target_list_find (info->target_list,
152 selection_data.target,
155 g_signal_emit_by_name (info->widget, "drag-data-get",
161 if (selection_data.length >= 0)
162 _gtk_quartz_set_selection_data_for_pasteboard (sender, &selection_data);
164 g_free (selection_data.data);
168 - (id)initWithInfo:(GtkDragSourceInfo *)anInfo
183 gtk_drag_get_data (GtkWidget *widget,
184 GdkDragContext *context,
188 id <NSDraggingInfo> dragging_info;
189 NSPasteboard *pasteboard;
190 GtkSelectionData *selection_data;
191 GtkDragDestInfo *info;
192 GtkDragDestSite *site;
194 dragging_info = gdk_quartz_drag_context_get_dragging_info_libgtk_only (context);
195 pasteboard = [dragging_info draggingPasteboard];
197 info = gtk_drag_get_dest_info (context, FALSE);
198 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
200 selection_data = _gtk_quartz_get_selection_data_from_pasteboard (pasteboard,
203 if (site && site->target_list)
207 if (gtk_target_list_find (site->target_list,
208 selection_data->target,
211 if (!(site->flags & GTK_DEST_DEFAULT_DROP) ||
212 selection_data->length >= 0)
213 g_signal_emit_by_name (widget,
214 "drag-data-received",
215 context, info->drop_x, info->drop_y,
222 g_signal_emit_by_name (widget,
223 "drag-data-received",
224 context, info->drop_x, info->drop_y,
229 if (site && site->flags & GTK_DEST_DEFAULT_DROP)
231 gtk_drag_finish (context,
232 (selection_data->length >= 0),
233 (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
239 gtk_drag_finish (GdkDragContext *context,
244 GtkDragSourceInfo *info;
245 GdkDragContext* source_context = gdk_quartz_drag_source_context ();
249 info = gtk_drag_get_source_info (source_context, FALSE);
252 info->success = success;
259 gtk_drag_dest_info_destroy (gpointer data)
261 GtkDragDestInfo *info = data;
266 static GtkDragDestInfo *
267 gtk_drag_get_dest_info (GdkDragContext *context,
270 GtkDragDestInfo *info;
271 static GQuark info_quark = 0;
273 info_quark = g_quark_from_static_string ("gtk-dest-info");
275 info = g_object_get_qdata (G_OBJECT (context), info_quark);
278 info = g_new (GtkDragDestInfo, 1);
280 info->context = context;
281 info->dropped = FALSE;
282 g_object_set_qdata_full (G_OBJECT (context), info_quark,
283 info, gtk_drag_dest_info_destroy);
289 static GQuark dest_info_quark = 0;
291 static GtkDragSourceInfo *
292 gtk_drag_get_source_info (GdkDragContext *context,
295 GtkDragSourceInfo *info;
297 if (!dest_info_quark)
298 dest_info_quark = g_quark_from_static_string ("gtk-source-info");
300 info = g_object_get_qdata (G_OBJECT (context), dest_info_quark);
303 info = g_new0 (GtkDragSourceInfo, 1);
304 info->context = context;
305 g_object_set_qdata (G_OBJECT (context), dest_info_quark, info);
312 gtk_drag_clear_source_info (GdkDragContext *context)
314 g_object_set_qdata (G_OBJECT (context), dest_info_quark, NULL);
318 gtk_drag_get_source_widget (GdkDragContext *context)
320 GtkDragSourceInfo *info;
321 GdkDragContext* real_source_context = gdk_quartz_drag_source_context();
323 if (!real_source_context)
326 info = gtk_drag_get_source_info (real_source_context, FALSE);
330 return info->source_widget;
333 /*************************************************************
334 * gtk_drag_highlight_draw:
335 * Callback for expose_event for highlighted widgets.
341 *************************************************************/
344 gtk_drag_highlight_draw (GtkWidget *widget,
348 int width = gtk_widget_get_allocated_width (widget);
349 int height = gtk_widget_get_allocated_height (widget);
350 GtkStyleContext *context;
352 gtk_style_context_save (context);
353 gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
355 gtk_render_frame (context, cr, 0, 0, width, height);
357 gtk_style_context_restore (context);
359 cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
360 cairo_set_line_width (cr, 1.0);
363 width - 1, height - 1);
369 /*************************************************************
370 * gtk_drag_highlight:
371 * Highlight the given widget in the default manner.
375 *************************************************************/
378 gtk_drag_highlight (GtkWidget *widget)
380 g_return_if_fail (GTK_IS_WIDGET (widget));
382 g_signal_connect_after (widget, "draw",
383 G_CALLBACK (gtk_drag_highlight_draw),
386 gtk_widget_queue_draw (widget);
389 /*************************************************************
390 * gtk_drag_unhighlight:
391 * Refresh the given widget to remove the highlight.
395 *************************************************************/
398 gtk_drag_unhighlight (GtkWidget *widget)
400 g_return_if_fail (GTK_IS_WIDGET (widget));
402 g_signal_handlers_disconnect_by_func (widget,
403 gtk_drag_highlight_draw,
406 gtk_widget_queue_draw (widget);
410 get_toplevel_nswindow (GtkWidget *widget)
412 GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
413 GdkWindow *window = gtk_widget_get_window (toplevel);
415 if (gtk_widget_is_toplevel (toplevel) && window)
416 return [gdk_quartz_window_get_nsview (window) window];
422 register_types (GtkWidget *widget, GtkDragDestSite *site)
424 if (site->target_list)
426 NSWindow *nswindow = get_toplevel_nswindow (widget);
428 NSAutoreleasePool *pool;
433 pool = [[NSAutoreleasePool alloc] init];
434 types = _gtk_quartz_target_list_to_pasteboard_types (site->target_list);
436 [nswindow registerForDraggedTypes:[types allObjects]];
444 gtk_drag_dest_realized (GtkWidget *widget,
447 GtkDragDestSite *site = user_data;
449 register_types (widget, site);
453 gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
454 GtkWidget *previous_toplevel,
457 GtkDragDestSite *site = user_data;
459 register_types (widget, site);
463 gtk_drag_dest_site_destroy (gpointer data)
465 GtkDragDestSite *site = data;
467 if (site->target_list)
468 gtk_target_list_unref (site->target_list);
474 gtk_drag_dest_set (GtkWidget *widget,
475 GtkDestDefaults flags,
476 const GtkTargetEntry *targets,
478 GdkDragAction actions)
480 GtkDragDestSite *old_site, *site;
482 g_return_if_fail (GTK_IS_WIDGET (widget));
484 old_site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
486 site = g_new (GtkDragDestSite, 1);
488 site->have_drag = FALSE;
490 site->target_list = gtk_target_list_new (targets, n_targets);
492 site->target_list = NULL;
493 site->actions = actions;
496 site->track_motion = old_site->track_motion;
498 site->track_motion = FALSE;
500 gtk_drag_dest_unset (widget);
502 if (gtk_widget_get_realized (widget))
503 gtk_drag_dest_realized (widget, site);
505 g_signal_connect (widget, "realize",
506 G_CALLBACK (gtk_drag_dest_realized), site);
507 g_signal_connect (widget, "hierarchy-changed",
508 G_CALLBACK (gtk_drag_dest_hierarchy_changed), site);
510 g_object_set_data_full (G_OBJECT (widget), I_("gtk-drag-dest"),
511 site, gtk_drag_dest_site_destroy);
515 gtk_drag_dest_set_proxy (GtkWidget *widget,
516 GdkWindow *proxy_window,
517 GdkDragProtocol protocol,
518 gboolean use_coordinates)
520 g_warning ("gtk_drag_dest_set_proxy is not supported on Mac OS X.");
524 gtk_drag_dest_unset (GtkWidget *widget)
526 GtkDragDestSite *old_site;
528 g_return_if_fail (GTK_IS_WIDGET (widget));
530 old_site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
533 g_signal_handlers_disconnect_by_func (widget,
534 gtk_drag_dest_realized,
536 g_signal_handlers_disconnect_by_func (widget,
537 gtk_drag_dest_hierarchy_changed,
541 g_object_set_data (G_OBJECT (widget), I_("gtk-drag-dest"), NULL);
545 gtk_drag_dest_get_target_list (GtkWidget *widget)
547 GtkDragDestSite *site;
549 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
551 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
553 return site ? site->target_list : NULL;
557 gtk_drag_dest_set_target_list (GtkWidget *widget,
558 GtkTargetList *target_list)
560 GtkDragDestSite *site;
562 g_return_if_fail (GTK_IS_WIDGET (widget));
564 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
568 g_warning ("Can't set a target list on a widget until you've called gtk_drag_dest_set() "
569 "to make the widget into a drag destination");
574 gtk_target_list_ref (target_list);
576 if (site->target_list)
577 gtk_target_list_unref (site->target_list);
579 site->target_list = target_list;
581 register_types (widget, site);
585 gtk_drag_dest_add_text_targets (GtkWidget *widget)
587 GtkTargetList *target_list;
589 target_list = gtk_drag_dest_get_target_list (widget);
591 gtk_target_list_ref (target_list);
593 target_list = gtk_target_list_new (NULL, 0);
594 gtk_target_list_add_text_targets (target_list, 0);
595 gtk_drag_dest_set_target_list (widget, target_list);
596 gtk_target_list_unref (target_list);
600 gtk_drag_dest_add_image_targets (GtkWidget *widget)
602 GtkTargetList *target_list;
604 target_list = gtk_drag_dest_get_target_list (widget);
606 gtk_target_list_ref (target_list);
608 target_list = gtk_target_list_new (NULL, 0);
609 gtk_target_list_add_image_targets (target_list, 0, FALSE);
610 gtk_drag_dest_set_target_list (widget, target_list);
611 gtk_target_list_unref (target_list);
615 gtk_drag_dest_add_uri_targets (GtkWidget *widget)
617 GtkTargetList *target_list;
619 target_list = gtk_drag_dest_get_target_list (widget);
621 gtk_target_list_ref (target_list);
623 target_list = gtk_target_list_new (NULL, 0);
624 gtk_target_list_add_uri_targets (target_list, 0);
625 gtk_drag_dest_set_target_list (widget, target_list);
626 gtk_target_list_unref (target_list);
630 prepend_and_ref_widget (GtkWidget *widget,
633 GSList **slist_p = data;
635 *slist_p = g_slist_prepend (*slist_p, g_object_ref (widget));
639 gtk_drag_find_widget (GtkWidget *widget,
640 GtkDragFindData *data)
642 GtkAllocation new_allocation;
643 gint allocation_to_window_x = 0;
644 gint allocation_to_window_y = 0;
648 if (data->found || !gtk_widget_get_mapped (widget) || !gtk_widget_get_sensitive (widget))
651 /* Note that in the following code, we only count the
652 * position as being inside a WINDOW widget if it is inside
653 * widget->window; points that are outside of widget->window
654 * but within the allocation are not counted. This is consistent
655 * with the way we highlight drag targets.
657 * data->x,y are relative to widget->parent->window (if
658 * widget is not a toplevel, widget->window otherwise).
659 * We compute the allocation of widget in the same coordinates,
660 * clipping to widget->window, and all intermediate
661 * windows. If data->x,y is inside that, then we translate
662 * our coordinates to be relative to widget->window and
665 gtk_widget_get_allocation (widget, &new_allocation);
667 if (gtk_widget_get_parent (widget))
670 GdkWindow *window = gtk_widget_get_window (widget);
671 GdkWindow *parent_window;
672 GtkAllocation allocation;
674 parent_window = gtk_widget_get_window (gtk_widget_get_parent (widget));
676 /* Compute the offset from allocation-relative to
677 * window-relative coordinates.
679 gtk_widget_get_allocation (widget, &allocation);
680 allocation_to_window_x = allocation.x;
681 allocation_to_window_y = allocation.y;
683 if (gtk_widget_get_has_window (widget))
685 /* The allocation is relative to the parent window for
686 * window widgets, not to widget->window.
688 gdk_window_get_position (window, &tx, &ty);
690 allocation_to_window_x -= tx;
691 allocation_to_window_y -= ty;
694 new_allocation.x = 0 + allocation_to_window_x;
695 new_allocation.y = 0 + allocation_to_window_y;
697 while (window && window != parent_window)
699 GdkRectangle window_rect = { 0, 0, 0, 0 };
701 window_rect.width = gdk_window_get_width (window);
702 window_rect.height = gdk_window_get_height (window);
704 gdk_rectangle_intersect (&new_allocation, &window_rect, &new_allocation);
706 gdk_window_get_position (window, &tx, &ty);
707 new_allocation.x += tx;
709 new_allocation.y += ty;
712 window = gdk_window_get_parent (window);
715 if (!window) /* Window and widget heirarchies didn't match. */
719 if (data->toplevel ||
720 ((data->x >= new_allocation.x) && (data->y >= new_allocation.y) &&
721 (data->x < new_allocation.x + new_allocation.width) &&
722 (data->y < new_allocation.y + new_allocation.height)))
724 /* First, check if the drag is in a valid drop site in
725 * one of our children
727 if (GTK_IS_CONTAINER (widget))
729 GtkDragFindData new_data = *data;
730 GSList *children = NULL;
733 new_data.x -= x_offset;
734 new_data.y -= y_offset;
735 new_data.found = FALSE;
736 new_data.toplevel = FALSE;
738 /* need to reference children temporarily in case the
739 * ::drag-motion/::drag-drop callbacks change the widget hierarchy.
741 gtk_container_forall (GTK_CONTAINER (widget), prepend_and_ref_widget, &children);
742 for (tmp_list = children; tmp_list; tmp_list = tmp_list->next)
744 if (!new_data.found && gtk_widget_is_drawable (tmp_list->data))
745 gtk_drag_find_widget (tmp_list->data, &new_data);
746 g_object_unref (tmp_list->data);
748 g_slist_free (children);
750 data->found = new_data.found;
753 /* If not, and this widget is registered as a drop site, check to
754 * emit "drag-motion" to check if we are actually in
758 g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"))
760 data->found = data->callback (widget,
762 data->x - x_offset - allocation_to_window_x,
763 data->y - y_offset - allocation_to_window_y,
765 /* If so, send a "drag-leave" to the last widget */
768 if (data->info->widget && data->info->widget != widget)
770 gtk_drag_dest_leave (data->info->widget, data->context, data->time);
772 data->info->widget = widget;
779 gtk_drag_dest_leave (GtkWidget *widget,
780 GdkDragContext *context,
783 GtkDragDestSite *site;
785 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
786 g_return_if_fail (site != NULL);
788 if ((site->flags & GTK_DEST_DEFAULT_HIGHLIGHT) && site->have_drag)
789 gtk_drag_unhighlight (widget);
791 if (!(site->flags & GTK_DEST_DEFAULT_MOTION) || site->have_drag ||
793 g_signal_emit_by_name (widget, "drag-leave", context, time);
795 site->have_drag = FALSE;
799 gtk_drag_dest_motion (GtkWidget *widget,
800 GdkDragContext *context,
805 GtkDragDestSite *site;
806 GdkDragAction action = 0;
809 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
810 g_return_val_if_fail (site != NULL, FALSE);
812 if (site->track_motion || site->flags & GTK_DEST_DEFAULT_MOTION)
814 if (gdk_drag_context_get_suggested_action (context) & site->actions)
815 action = gdk_drag_context_get_suggested_action (context);
817 if (action && gtk_drag_dest_find_target (widget, context, NULL))
819 if (!site->have_drag)
821 site->have_drag = TRUE;
822 if (site->flags & GTK_DEST_DEFAULT_HIGHLIGHT)
823 gtk_drag_highlight (widget);
826 gdk_drag_status (context, action, time);
830 gdk_drag_status (context, 0, time);
831 if (!site->track_motion)
836 g_signal_emit_by_name (widget, "drag-motion",
837 context, x, y, time, &retval);
839 return (site->flags & GTK_DEST_DEFAULT_MOTION) ? TRUE : retval;
843 gtk_drag_dest_drop (GtkWidget *widget,
844 GdkDragContext *context,
849 GtkDragDestSite *site;
850 GtkDragDestInfo *info;
853 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
854 g_return_val_if_fail (site != NULL, FALSE);
856 info = gtk_drag_get_dest_info (context, FALSE);
857 g_return_val_if_fail (info != NULL, FALSE);
862 if (site->flags & GTK_DEST_DEFAULT_DROP)
864 GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL);
866 if (target == GDK_NONE)
868 gtk_drag_finish (context, FALSE, FALSE, time);
872 gtk_drag_get_data (widget, context, target, time);
875 g_signal_emit_by_name (widget, "drag-drop",
876 context, x, y, time, &retval);
878 return (site->flags & GTK_DEST_DEFAULT_DROP) ? TRUE : retval;
882 gtk_drag_dest_set_track_motion (GtkWidget *widget,
883 gboolean track_motion)
885 GtkDragDestSite *site;
887 g_return_if_fail (GTK_IS_WIDGET (widget));
889 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
891 g_return_if_fail (site != NULL);
893 site->track_motion = track_motion != FALSE;
897 gtk_drag_dest_get_track_motion (GtkWidget *widget)
899 GtkDragDestSite *site;
901 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
903 site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
906 return site->track_motion;
912 _gtk_drag_dest_handle_event (GtkWidget *toplevel,
915 GtkDragDestInfo *info;
916 GdkDragContext *context;
918 g_return_if_fail (toplevel != NULL);
919 g_return_if_fail (event != NULL);
921 context = event->dnd.context;
923 info = gtk_drag_get_dest_info (context, TRUE);
925 /* Find the widget for the event */
934 gtk_drag_dest_leave (info->widget, context, event->dnd.time);
939 case GDK_DRAG_MOTION:
942 GtkDragFindData data;
945 if (event->type == GDK_DROP_START)
947 info->dropped = TRUE;
948 /* We send a leave here so that the widget unhighlights
953 gtk_drag_dest_leave (info->widget, context, event->dnd.time);
958 gdk_window_get_position (gtk_widget_get_window (toplevel), &tx, &ty);
960 data.x = event->dnd.x_root - tx;
961 data.y = event->dnd.y_root - ty;
962 data.context = context;
965 data.toplevel = TRUE;
966 data.callback = (event->type == GDK_DRAG_MOTION) ?
967 gtk_drag_dest_motion : gtk_drag_dest_drop;
968 data.time = event->dnd.time;
970 gtk_drag_find_widget (toplevel, &data);
972 if (info->widget && !data.found)
974 gtk_drag_dest_leave (info->widget, context, event->dnd.time);
980 if (event->type == GDK_DRAG_MOTION)
983 gdk_drag_status (context, 0, event->dnd.time);
988 g_assert_not_reached ();
995 gtk_drag_dest_find_target (GtkWidget *widget,
996 GdkDragContext *context,
997 GtkTargetList *target_list)
999 id <NSDraggingInfo> dragging_info;
1000 NSPasteboard *pasteboard;
1001 GtkWidget *source_widget;
1003 GList *tmp_source = NULL;
1004 GList *source_targets;
1006 g_return_val_if_fail (GTK_IS_WIDGET (widget), GDK_NONE);
1007 g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE);
1009 dragging_info = gdk_quartz_drag_context_get_dragging_info_libgtk_only (context);
1010 pasteboard = [dragging_info draggingPasteboard];
1012 source_widget = gtk_drag_get_source_widget (context);
1014 if (target_list == NULL)
1015 target_list = gtk_drag_dest_get_target_list (widget);
1017 if (target_list == NULL)
1020 source_targets = _gtk_quartz_pasteboard_types_to_atom_list ([pasteboard types]);
1021 tmp_target = target_list->list;
1024 GtkTargetPair *pair = tmp_target->data;
1025 tmp_source = source_targets;
1028 if (tmp_source->data == GUINT_TO_POINTER (pair->target))
1030 if ((!(pair->flags & GTK_TARGET_SAME_APP) || source_widget) &&
1031 (!(pair->flags & GTK_TARGET_SAME_WIDGET) || (source_widget == widget)))
1033 g_list_free (source_targets);
1034 return pair->target;
1039 tmp_source = tmp_source->next;
1041 tmp_target = tmp_target->next;
1044 g_list_free (source_targets);
1049 gtk_drag_begin_idle (gpointer arg)
1051 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
1052 GdkDragContext* context = (GdkDragContext*) arg;
1053 GtkDragSourceInfo* info = gtk_drag_get_source_info (context, FALSE);
1055 NSPasteboard *pasteboard;
1056 GtkDragSourceOwner *owner;
1059 NSImage *drag_image;
1061 g_assert (info != NULL);
1063 pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
1064 owner = [[GtkDragSourceOwner alloc] initWithInfo:info];
1066 types = _gtk_quartz_target_list_to_pasteboard_types (info->target_list);
1068 [pasteboard declareTypes:[types allObjects] owner:owner];
1073 if ((nswindow = get_toplevel_nswindow (info->source_widget)) == NULL)
1076 /* Ref the context. It's unreffed when the drag has been aborted */
1077 g_object_ref (info->context);
1079 /* FIXME: If the event isn't a mouse event, use the global cursor position instead */
1080 point = [info->nsevent locationInWindow];
1082 drag_image = _gtk_quartz_create_image_from_pixbuf (info->icon_pixbuf);
1084 point.x -= info->hot_x;
1085 point.y -= info->hot_y;
1087 [nswindow dragImage:drag_image
1089 offset:NSMakeSize(0, 0)
1091 pasteboard:pasteboard
1095 [info->nsevent release];
1096 [drag_image release];
1103 static GdkDragContext *
1104 gtk_drag_begin_internal (GtkWidget *widget,
1105 GtkDragSourceSite *site,
1106 GtkTargetList *target_list,
1107 GdkDragAction actions,
1111 GtkDragSourceInfo *info;
1112 GdkDragContext *context;
1115 context = gdk_drag_begin (gtk_widget_get_window (widget), NULL);
1117 info = gtk_drag_get_source_info (context, TRUE);
1119 info->source_widget = g_object_ref (widget);
1120 info->widget = g_object_ref (widget);
1121 info->target_list = target_list;
1122 gtk_target_list_ref (target_list);
1124 info->possible_actions = actions;
1126 g_signal_emit_by_name (widget, "drag-begin", info->context);
1128 /* Ensure that we have an icon before we start the drag; the
1129 * application may have set one in ::drag_begin, or it may
1132 if (!info->icon_pixbuf)
1134 if (!site || site->icon_type == GTK_IMAGE_EMPTY)
1135 gtk_drag_set_icon_default (context);
1137 switch (site->icon_type)
1139 case GTK_IMAGE_PIXBUF:
1140 gtk_drag_set_icon_pixbuf (context,
1141 site->icon_data.pixbuf.pixbuf,
1144 case GTK_IMAGE_STOCK:
1145 gtk_drag_set_icon_stock (context,
1146 site->icon_data.stock.stock_id,
1149 case GTK_IMAGE_ICON_NAME:
1150 gtk_drag_set_icon_name (context,
1151 site->icon_data.name.icon_name,
1154 case GTK_IMAGE_EMPTY:
1156 g_assert_not_reached();
1161 nswindow = get_toplevel_nswindow (widget);
1162 info->nsevent = [nswindow currentEvent];
1163 [info->nsevent retain];
1165 /* drag will begin in an idle handler to avoid nested run loops */
1167 g_idle_add_full (G_PRIORITY_HIGH_IDLE, gtk_drag_begin_idle, context, NULL);
1169 gdk_pointer_ungrab (0);
1175 gtk_drag_begin (GtkWidget *widget,
1176 GtkTargetList *targets,
1177 GdkDragAction actions,
1181 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1182 g_return_val_if_fail (gtk_widget_get_realized (widget), NULL);
1183 g_return_val_if_fail (targets != NULL, NULL);
1185 return gtk_drag_begin_internal (widget, NULL, targets,
1186 actions, button, event);
1191 gtk_drag_source_event_cb (GtkWidget *widget,
1195 GtkDragSourceSite *site;
1196 gboolean retval = FALSE;
1197 site = (GtkDragSourceSite *)data;
1199 switch (event->type)
1201 case GDK_BUTTON_PRESS:
1202 if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask)
1204 site->state |= (GDK_BUTTON1_MASK << (event->button.button - 1));
1205 site->x = event->button.x;
1206 site->y = event->button.y;
1210 case GDK_BUTTON_RELEASE:
1211 if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask)
1212 site->state &= ~(GDK_BUTTON1_MASK << (event->button.button - 1));
1215 case GDK_MOTION_NOTIFY:
1216 if (site->state & event->motion.state & site->start_button_mask)
1218 /* FIXME: This is really broken and can leave us
1224 if (site->state & event->motion.state &
1225 GDK_BUTTON1_MASK << (i - 1))
1229 if (gtk_drag_check_threshold (widget, site->x, site->y,
1230 event->motion.x, event->motion.y))
1233 gtk_drag_begin_internal (widget, site, site->target_list,
1242 default: /* hit for 2/3BUTTON_PRESS */
1250 gtk_drag_source_set (GtkWidget *widget,
1251 GdkModifierType start_button_mask,
1252 const GtkTargetEntry *targets,
1254 GdkDragAction actions)
1256 GtkDragSourceSite *site;
1258 g_return_if_fail (GTK_IS_WIDGET (widget));
1260 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1262 gtk_widget_add_events (widget,
1263 gtk_widget_get_events (widget) |
1264 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
1265 GDK_BUTTON_MOTION_MASK);
1269 if (site->target_list)
1270 gtk_target_list_unref (site->target_list);
1274 site = g_new0 (GtkDragSourceSite, 1);
1276 site->icon_type = GTK_IMAGE_EMPTY;
1278 g_signal_connect (widget, "button-press-event",
1279 G_CALLBACK (gtk_drag_source_event_cb),
1281 g_signal_connect (widget, "button-release-event",
1282 G_CALLBACK (gtk_drag_source_event_cb),
1284 g_signal_connect (widget, "motion-notify-event",
1285 G_CALLBACK (gtk_drag_source_event_cb),
1288 g_object_set_data_full (G_OBJECT (widget),
1289 I_("gtk-site-data"),
1290 site, gtk_drag_source_site_destroy);
1293 site->start_button_mask = start_button_mask;
1295 site->target_list = gtk_target_list_new (targets, n_targets);
1297 site->actions = actions;
1300 /*************************************************************
1301 * gtk_drag_source_unset
1302 * Unregister this widget as a drag source.
1306 *************************************************************/
1309 gtk_drag_source_unset (GtkWidget *widget)
1311 GtkDragSourceSite *site;
1313 g_return_if_fail (GTK_IS_WIDGET (widget));
1315 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1319 g_signal_handlers_disconnect_by_func (widget,
1320 gtk_drag_source_event_cb,
1322 g_object_set_data (G_OBJECT (widget), I_("gtk-site-data"), NULL);
1327 gtk_drag_source_get_target_list (GtkWidget *widget)
1329 GtkDragSourceSite *site;
1331 g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
1333 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1335 return site ? site->target_list : NULL;
1340 gtk_drag_source_set_target_list (GtkWidget *widget,
1341 GtkTargetList *target_list)
1343 GtkDragSourceSite *site;
1345 g_return_if_fail (GTK_IS_WIDGET (widget));
1347 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1350 g_warning ("gtk_drag_source_set_target_list() requires the widget "
1351 "to already be a drag source.");
1356 gtk_target_list_ref (target_list);
1358 if (site->target_list)
1359 gtk_target_list_unref (site->target_list);
1361 site->target_list = target_list;
1365 * gtk_drag_source_add_text_targets:
1366 * @widget: a #GtkWidget that's is a drag source
1368 * Add the text targets supported by #GtkSelection to
1369 * the target list of the drag source. The targets
1370 * are added with @info = 0. If you need another value,
1371 * use gtk_target_list_add_text_targets() and
1372 * gtk_drag_source_set_target_list().
1377 gtk_drag_source_add_text_targets (GtkWidget *widget)
1379 GtkTargetList *target_list;
1381 target_list = gtk_drag_source_get_target_list (widget);
1383 gtk_target_list_ref (target_list);
1385 target_list = gtk_target_list_new (NULL, 0);
1386 gtk_target_list_add_text_targets (target_list, 0);
1387 gtk_drag_source_set_target_list (widget, target_list);
1388 gtk_target_list_unref (target_list);
1392 gtk_drag_source_add_image_targets (GtkWidget *widget)
1394 GtkTargetList *target_list;
1396 target_list = gtk_drag_source_get_target_list (widget);
1398 gtk_target_list_ref (target_list);
1400 target_list = gtk_target_list_new (NULL, 0);
1401 gtk_target_list_add_image_targets (target_list, 0, TRUE);
1402 gtk_drag_source_set_target_list (widget, target_list);
1403 gtk_target_list_unref (target_list);
1407 gtk_drag_source_add_uri_targets (GtkWidget *widget)
1409 GtkTargetList *target_list;
1411 target_list = gtk_drag_source_get_target_list (widget);
1413 gtk_target_list_ref (target_list);
1415 target_list = gtk_target_list_new (NULL, 0);
1416 gtk_target_list_add_uri_targets (target_list, 0);
1417 gtk_drag_source_set_target_list (widget, target_list);
1418 gtk_target_list_unref (target_list);
1422 gtk_drag_source_unset_icon (GtkDragSourceSite *site)
1424 switch (site->icon_type)
1426 case GTK_IMAGE_EMPTY:
1428 case GTK_IMAGE_PIXBUF:
1429 g_object_unref (site->icon_data.pixbuf.pixbuf);
1431 case GTK_IMAGE_STOCK:
1432 g_free (site->icon_data.stock.stock_id);
1434 case GTK_IMAGE_ICON_NAME:
1435 g_free (site->icon_data.name.icon_name);
1438 g_assert_not_reached();
1441 site->icon_type = GTK_IMAGE_EMPTY;
1445 gtk_drag_source_site_destroy (gpointer data)
1447 GtkDragSourceSite *site = data;
1449 if (site->target_list)
1450 gtk_target_list_unref (site->target_list);
1452 gtk_drag_source_unset_icon (site);
1457 gtk_drag_source_set_icon_pixbuf (GtkWidget *widget,
1460 GtkDragSourceSite *site;
1462 g_return_if_fail (GTK_IS_WIDGET (widget));
1463 g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
1465 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1466 g_return_if_fail (site != NULL);
1467 g_object_ref (pixbuf);
1469 gtk_drag_source_unset_icon (site);
1471 site->icon_type = GTK_IMAGE_PIXBUF;
1472 site->icon_data.pixbuf.pixbuf = pixbuf;
1476 * gtk_drag_source_set_icon_stock:
1477 * @widget: a #GtkWidget
1478 * @stock_id: the ID of the stock icon to use
1480 * Sets the icon that will be used for drags from a particular source
1484 gtk_drag_source_set_icon_stock (GtkWidget *widget,
1485 const gchar *stock_id)
1487 GtkDragSourceSite *site;
1489 g_return_if_fail (GTK_IS_WIDGET (widget));
1490 g_return_if_fail (stock_id != NULL);
1492 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1493 g_return_if_fail (site != NULL);
1495 gtk_drag_source_unset_icon (site);
1497 site->icon_type = GTK_IMAGE_STOCK;
1498 site->icon_data.stock.stock_id = g_strdup (stock_id);
1502 * gtk_drag_source_set_icon_name:
1503 * @widget: a #GtkWidget
1504 * @icon_name: name of icon to use
1506 * Sets the icon that will be used for drags from a particular source
1507 * to a themed icon. See the docs for #GtkIconTheme for more details.
1512 gtk_drag_source_set_icon_name (GtkWidget *widget,
1513 const gchar *icon_name)
1515 GtkDragSourceSite *site;
1517 g_return_if_fail (GTK_IS_WIDGET (widget));
1518 g_return_if_fail (icon_name != NULL);
1520 site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
1521 g_return_if_fail (site != NULL);
1523 gtk_drag_source_unset_icon (site);
1525 site->icon_type = GTK_IMAGE_ICON_NAME;
1526 site->icon_data.name.icon_name = g_strdup (icon_name);
1531 * gtk_drag_set_icon_widget:
1532 * @context: the context for a drag. (This must be called
1533 with a context for the source side of a drag)
1534 * @widget: a toplevel window to use as an icon.
1535 * @hot_x: the X offset within @widget of the hotspot.
1536 * @hot_y: the Y offset within @widget of the hotspot.
1538 * Changes the icon for a widget to a given widget. GTK+
1539 * will not destroy the icon, so if you don't want
1540 * it to persist, you should connect to the "drag-end"
1541 * signal and destroy it yourself.
1544 gtk_drag_set_icon_widget (GdkDragContext *context,
1549 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1550 g_return_if_fail (GTK_IS_WIDGET (widget));
1552 g_warning ("gtk_drag_set_icon_widget is not supported on Mac OS X");
1556 set_icon_stock_pixbuf (GdkDragContext *context,
1557 const gchar *stock_id,
1562 GtkDragSourceInfo *info;
1564 info = gtk_drag_get_source_info (context, FALSE);
1568 pixbuf = gtk_widget_render_icon_pixbuf (info->widget, stock_id,
1573 g_warning ("Cannot load drag icon from stock_id %s", stock_id);
1578 g_object_ref (pixbuf);
1580 if (info->icon_pixbuf)
1581 g_object_unref (info->icon_pixbuf);
1582 info->icon_pixbuf = pixbuf;
1583 info->hot_x = hot_x;
1584 info->hot_y = hot_y;
1588 * gtk_drag_set_icon_pixbuf:
1589 * @context: the context for a drag. (This must be called
1590 * with a context for the source side of a drag)
1591 * @pixbuf: the #GdkPixbuf to use as the drag icon.
1592 * @hot_x: the X offset within @widget of the hotspot.
1593 * @hot_y: the Y offset within @widget of the hotspot.
1595 * Sets @pixbuf as the icon for a given drag.
1598 gtk_drag_set_icon_pixbuf (GdkDragContext *context,
1603 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1604 g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
1606 set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y);
1610 * gtk_drag_set_icon_stock:
1611 * @context: the context for a drag. (This must be called
1612 * with a context for the source side of a drag)
1613 * @stock_id: the ID of the stock icon to use for the drag.
1614 * @hot_x: the X offset within the icon of the hotspot.
1615 * @hot_y: the Y offset within the icon of the hotspot.
1617 * Sets the icon for a given drag from a stock ID.
1620 gtk_drag_set_icon_stock (GdkDragContext *context,
1621 const gchar *stock_id,
1626 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1627 g_return_if_fail (stock_id != NULL);
1629 set_icon_stock_pixbuf (context, stock_id, NULL, hot_x, hot_y);
1633 /* XXX: This function is in gdk, too. Should it be in Cairo? */
1635 _gtk_cairo_surface_extents (cairo_surface_t *surface,
1636 GdkRectangle *extents)
1638 double x1, x2, y1, y2;
1641 g_return_val_if_fail (surface != NULL, FALSE);
1642 g_return_val_if_fail (extents != NULL, FALSE);
1644 cr = cairo_create (surface);
1645 cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
1654 if (x1 < G_MININT || x1 > G_MAXINT ||
1655 y1 < G_MININT || y1 > G_MAXINT ||
1656 x2 > G_MAXINT || y2 > G_MAXINT)
1658 extents->x = extents->y = extents->width = extents->height = 0;
1664 extents->width = x2;
1665 extents->height = y2;
1671 * gtk_drag_set_icon_surface:
1672 * @context: the context for a drag. (This must be called
1673 * with a context for the source side of a drag)
1674 * @surface: the surface to use as icon
1676 * Sets @surface as the icon for a given drag. GTK+ retains
1677 * references for the arguments, and will release them when
1678 * they are no longer needed.
1680 * To position the surface relative to the mouse, use
1681 * cairo_surface_set_device_offset() on @surface. The mouse
1682 * cursor will be positioned at the (0,0) coordinate of the
1686 gtk_drag_set_icon_surface (GdkDragContext *context,
1687 cairo_surface_t *surface)
1690 GdkRectangle extents;
1691 double x_offset, y_offset;
1693 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1694 g_return_if_fail (surface != NULL);
1696 _gtk_cairo_surface_extents (surface, &extents);
1697 cairo_surface_get_device_offset (surface, &x_offset, &y_offset);
1699 pixbuf = gdk_pixbuf_get_from_surface (surface,
1700 extents.x, extents.y,
1701 extents.width, extents.height);
1702 gtk_drag_set_icon_pixbuf (context, pixbuf, -x_offset, -y_offset);
1703 g_object_unref (pixbuf);
1707 * gtk_drag_set_icon_name:
1708 * @context: the context for a drag. (This must be called
1709 * with a context for the source side of a drag)
1710 * @icon_name: name of icon to use
1711 * @hot_x: the X offset of the hotspot within the icon
1712 * @hot_y: the Y offset of the hotspot within the icon
1714 * Sets the icon for a given drag from a named themed icon. See
1715 * the docs for #GtkIconTheme for more details. Note that the
1716 * size of the icon depends on the icon theme (the icon is
1717 * loaded at the symbolic size #GTK_ICON_SIZE_DND), thus
1718 * @hot_x and @hot_y have to be used with care.
1723 gtk_drag_set_icon_name (GdkDragContext *context,
1724 const gchar *icon_name,
1729 GtkSettings *settings;
1730 GtkIconTheme *icon_theme;
1732 gint width, height, icon_size;
1734 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1735 g_return_if_fail (icon_name != NULL);
1737 screen = gdk_window_get_screen (gdk_drag_context_get_source_window (context));
1738 g_return_if_fail (screen != NULL);
1740 settings = gtk_settings_get_for_screen (screen);
1741 if (gtk_icon_size_lookup_for_settings (settings,
1744 icon_size = MAX (width, height);
1746 icon_size = 32; /* default value for GTK_ICON_SIZE_DND */
1748 icon_theme = gtk_icon_theme_get_for_screen (screen);
1750 pixbuf = gtk_icon_theme_load_icon (icon_theme, icon_name,
1751 icon_size, 0, NULL);
1753 set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y);
1755 g_warning ("Cannot load drag icon from icon name %s", icon_name);
1759 * gtk_drag_set_icon_default:
1760 * @context: the context for a drag. (This must be called
1761 with a context for the source side of a drag)
1763 * Sets the icon for a particular drag to the default
1767 gtk_drag_set_icon_default (GdkDragContext *context)
1769 g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
1771 gtk_drag_set_icon_stock (context, GTK_STOCK_DND, -2, -2);
1775 gtk_drag_source_info_destroy (GtkDragSourceInfo *info)
1777 if (info->icon_pixbuf)
1778 g_object_unref (info->icon_pixbuf);
1780 g_signal_emit_by_name (info->widget, "drag-end",
1783 if (info->source_widget)
1784 g_object_unref (info->source_widget);
1787 g_object_unref (info->widget);
1789 gtk_target_list_unref (info->target_list);
1791 gtk_drag_clear_source_info (info->context);
1792 g_object_unref (info->context);
1798 drag_drop_finished_idle_cb (gpointer data)
1800 gtk_drag_source_info_destroy (data);
1805 gtk_drag_drop_finished (GtkDragSourceInfo *info)
1807 if (info->success && info->delete)
1808 g_signal_emit_by_name (info->source_widget, "drag-data-delete",
1811 /* Workaround for the fact that the NS API blocks until the drag is
1812 * over. This way the context is still valid when returning from
1813 * drag_begin, even if it will still be quite useless. See bug #501588.
1815 g_idle_add (drag_drop_finished_idle_cb, info);
1818 /*************************************************************
1819 * _gtk_drag_source_handle_event:
1820 * Called from widget event handling code on Drag events
1824 * toplevel: Toplevel widget that received the event
1827 *************************************************************/
1830 _gtk_drag_source_handle_event (GtkWidget *widget,
1833 GtkDragSourceInfo *info;
1834 GdkDragContext *context;
1836 g_return_if_fail (widget != NULL);
1837 g_return_if_fail (event != NULL);
1839 context = event->dnd.context;
1840 info = gtk_drag_get_source_info (context, FALSE);
1844 switch (event->type)
1846 case GDK_DROP_FINISHED:
1847 gtk_drag_drop_finished (info);
1850 g_assert_not_reached ();
1856 gtk_drag_check_threshold (GtkWidget *widget,
1862 gint drag_threshold;
1864 g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
1866 g_object_get (gtk_widget_get_settings (widget),
1867 "gtk-dnd-drag-threshold", &drag_threshold,
1870 return (ABS (current_x - start_x) > drag_threshold ||
1871 ABS (current_y - start_y) > drag_threshold);