/* GTK - The GIMP Toolkit * Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include #include #include "gdkconfig.h" #include "gdk/gdkkeysyms.h" #include "gtkdnd.h" #include "gtkiconfactory.h" #include "gtkicontheme.h" #include "gtkimage.h" #include "gtkinvisible.h" #include "gtkmain.h" #include "gtkplug.h" #include "gtkstock.h" #include "gtkwindow.h" #include "gtkintl.h" #include "gtkquartz.h" #include "gdk/quartz/gdkquartz.h" typedef struct _GtkDragSourceSite GtkDragSourceSite; typedef struct _GtkDragSourceInfo GtkDragSourceInfo; typedef struct _GtkDragDestSite GtkDragDestSite; typedef struct _GtkDragDestInfo GtkDragDestInfo; typedef struct _GtkDragFindData GtkDragFindData; static void gtk_drag_find_widget (GtkWidget *widget, GtkDragFindData *data); static void gtk_drag_dest_site_destroy (gpointer data); static void gtk_drag_dest_leave (GtkWidget *widget, GdkDragContext *context, guint time); static GtkDragDestInfo *gtk_drag_get_dest_info (GdkDragContext *context, gboolean create); static void gtk_drag_source_site_destroy (gpointer data); static GtkDragSourceInfo *gtk_drag_get_source_info (GdkDragContext *context, gboolean create); extern GdkDragContext *gdk_quartz_drag_source_context (); /* gdk/quartz/gdkdnd-quartz.c */ struct _GtkDragSourceSite { GdkModifierType start_button_mask; GtkTargetList *target_list; /* Targets for drag data */ GdkDragAction actions; /* Possible actions */ /* Drag icon */ GtkImageType icon_type; union { GtkImagePixbufData pixbuf; GtkImageStockData stock; GtkImageIconNameData name; } icon_data; /* Stored button press information to detect drag beginning */ gint state; gint x, y; }; struct _GtkDragSourceInfo { GtkWidget *source_widget; GtkWidget *widget; GtkTargetList *target_list; /* Targets for drag data */ GdkDragAction possible_actions; /* Actions allowed by source */ GdkDragContext *context; /* drag context */ NSEvent *nsevent; /* what started it */ gint hot_x, hot_y; /* Hot spot for drag */ GdkPixbuf *icon_pixbuf; gboolean success; gboolean delete; }; struct _GtkDragDestSite { GtkDestDefaults flags; GtkTargetList *target_list; GdkDragAction actions; guint have_drag : 1; guint track_motion : 1; }; struct _GtkDragDestInfo { GtkWidget *widget; /* Widget in which drag is in */ GdkDragContext *context; /* Drag context */ guint dropped : 1; /* Set after we receive a drop */ gint drop_x, drop_y; /* Position of drop */ }; struct _GtkDragFindData { gint x; gint y; GdkDragContext *context; GtkDragDestInfo *info; gboolean found; gboolean toplevel; gboolean (*callback) (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint32 time); guint32 time; }; @interface GtkDragSourceOwner : NSObject { GtkDragSourceInfo *info; } @end @implementation GtkDragSourceOwner -(void)pasteboard:(NSPasteboard *)sender provideDataForType:(NSString *)type { guint target_info; GtkSelectionData selection_data; selection_data.selection = GDK_NONE; selection_data.data = NULL; selection_data.length = -1; selection_data.target = _gtk_quartz_pasteboard_type_to_atom (type); if (gtk_target_list_find (info->target_list, selection_data.target, &target_info)) { g_signal_emit_by_name (info->widget, "drag-data-get", info->context, &selection_data, target_info, time); if (selection_data.length >= 0) _gtk_quartz_set_selection_data_for_pasteboard (sender, &selection_data); g_free (selection_data.data); } } - (id)initWithInfo:(GtkDragSourceInfo *)anInfo { self = [super init]; if (self) { info = anInfo; } return self; } @end void gtk_drag_get_data (GtkWidget *widget, GdkDragContext *context, GdkAtom target, guint32 time) { id dragging_info; NSPasteboard *pasteboard; GtkSelectionData *selection_data; GtkDragDestInfo *info; GtkDragDestSite *site; dragging_info = gdk_quartz_drag_context_get_dragging_info_libgtk_only (context); pasteboard = [dragging_info draggingPasteboard]; info = gtk_drag_get_dest_info (context, FALSE); site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); selection_data = _gtk_quartz_get_selection_data_from_pasteboard (pasteboard, target, 0); if (site && site->target_list) { guint target_info; if (gtk_target_list_find (site->target_list, selection_data->target, &target_info)) { if (!(site->flags & GTK_DEST_DEFAULT_DROP) || selection_data->length >= 0) g_signal_emit_by_name (widget, "drag-data-received", context, info->drop_x, info->drop_y, selection_data, target_info, time); } } else { g_signal_emit_by_name (widget, "drag-data-received", context, info->drop_x, info->drop_y, selection_data, 0, time); } if (site && site->flags & GTK_DEST_DEFAULT_DROP) { gtk_drag_finish (context, (selection_data->length >= 0), (context->action == GDK_ACTION_MOVE), time); } } void gtk_drag_finish (GdkDragContext *context, gboolean success, gboolean del, guint32 time) { GtkDragSourceInfo *info; GdkDragContext* source_context = gdk_quartz_drag_source_context (); if (source_context) { info = gtk_drag_get_source_info (source_context, FALSE); if (info) { info->success = success; info->delete = del; } } } static void gtk_drag_dest_info_destroy (gpointer data) { GtkDragDestInfo *info = data; g_free (info); } static GtkDragDestInfo * gtk_drag_get_dest_info (GdkDragContext *context, gboolean create) { GtkDragDestInfo *info; static GQuark info_quark = 0; if (!info_quark) info_quark = g_quark_from_static_string ("gtk-dest-info"); info = g_object_get_qdata (G_OBJECT (context), info_quark); if (!info && create) { info = g_new (GtkDragDestInfo, 1); info->widget = NULL; info->context = context; info->dropped = FALSE; g_object_set_qdata_full (G_OBJECT (context), info_quark, info, gtk_drag_dest_info_destroy); } return info; } static GQuark dest_info_quark = 0; static GtkDragSourceInfo * gtk_drag_get_source_info (GdkDragContext *context, gboolean create) { GtkDragSourceInfo *info; if (!dest_info_quark) dest_info_quark = g_quark_from_static_string ("gtk-source-info"); info = g_object_get_qdata (G_OBJECT (context), dest_info_quark); if (!info && create) { info = g_new0 (GtkDragSourceInfo, 1); info->context = context; g_object_set_qdata (G_OBJECT (context), dest_info_quark, info); } return info; } static void gtk_drag_clear_source_info (GdkDragContext *context) { g_object_set_qdata (G_OBJECT (context), dest_info_quark, NULL); } GtkWidget * gtk_drag_get_source_widget (GdkDragContext *context) { GtkDragSourceInfo *info; GdkDragContext* real_source_context = gdk_quartz_drag_source_context(); if (!real_source_context) return NULL; info = gtk_drag_get_source_info (real_source_context, FALSE); if (!info) return NULL; return info->source_widget; } /************************************************************* * gtk_drag_highlight_expose: * Callback for expose_event for highlighted widgets. * arguments: * widget: * event: * data: * results: *************************************************************/ static gboolean gtk_drag_highlight_expose (GtkWidget *widget, GdkEventExpose *event, gpointer data) { gint x, y, width, height; if (gtk_widget_is_drawable (widget)) { cairo_t *cr; GdkWindow *window = gtk_widget_get_window (widget); if (!gtk_widget_get_has_window (widget)) { GtkAllocation allocation; gtk_widget_get_allocation (widget, &allocation); x = allocation.x; y = allocation.y; width = allocation.width; height = allocation.height; } else { x = 0; y = 0; gdk_drawable_get_size (window, &width, &height); } gtk_paint_shadow (gtk_widget_get_style (widget), window, GTK_STATE_NORMAL, GTK_SHADOW_OUT, NULL, widget, "dnd", x, y, width, height); cr = gdk_cairo_create (window); cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */ cairo_set_line_width (cr, 1.0); cairo_rectangle (cr, x + 0.5, y + 0.5, width - 1, height - 1); cairo_stroke (cr); cairo_destroy (cr); } return FALSE; } /************************************************************* * gtk_drag_highlight: * Highlight the given widget in the default manner. * arguments: * widget: * results: *************************************************************/ void gtk_drag_highlight (GtkWidget *widget) { g_return_if_fail (GTK_IS_WIDGET (widget)); g_signal_connect_after (widget, "expose-event", G_CALLBACK (gtk_drag_highlight_expose), NULL); gtk_widget_queue_draw (widget); } /************************************************************* * gtk_drag_unhighlight: * Refresh the given widget to remove the highlight. * arguments: * widget: * results: *************************************************************/ void gtk_drag_unhighlight (GtkWidget *widget) { g_return_if_fail (GTK_IS_WIDGET (widget)); g_signal_handlers_disconnect_by_func (widget, gtk_drag_highlight_expose, NULL); gtk_widget_queue_draw (widget); } static NSWindow * get_toplevel_nswindow (GtkWidget *widget) { GtkWidget *toplevel = gtk_widget_get_toplevel (widget); GdkWindow *window = gtk_widget_get_window (toplevel); if (gtk_widget_is_toplevel (toplevel) && window) return [gdk_quartz_window_get_nsview (window) window]; else return NULL; } static void register_types (GtkWidget *widget, GtkDragDestSite *site) { if (site->target_list) { NSWindow *nswindow = get_toplevel_nswindow (widget); NSSet *types; NSAutoreleasePool *pool; if (!nswindow) return; pool = [[NSAutoreleasePool alloc] init]; types = _gtk_quartz_target_list_to_pasteboard_types (site->target_list); [nswindow registerForDraggedTypes:[types allObjects]]; [types release]; [pool release]; } } static void gtk_drag_dest_realized (GtkWidget *widget, gpointer user_data) { GtkDragDestSite *site = user_data; register_types (widget, site); } static void gtk_drag_dest_hierarchy_changed (GtkWidget *widget, GtkWidget *previous_toplevel, gpointer user_data) { GtkDragDestSite *site = user_data; register_types (widget, site); } static void gtk_drag_dest_site_destroy (gpointer data) { GtkDragDestSite *site = data; if (site->target_list) gtk_target_list_unref (site->target_list); g_free (site); } void gtk_drag_dest_set (GtkWidget *widget, GtkDestDefaults flags, const GtkTargetEntry *targets, gint n_targets, GdkDragAction actions) { GtkDragDestSite *old_site, *site; g_return_if_fail (GTK_IS_WIDGET (widget)); old_site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); site = g_new (GtkDragDestSite, 1); site->flags = flags; site->have_drag = FALSE; if (targets) site->target_list = gtk_target_list_new (targets, n_targets); else site->target_list = NULL; site->actions = actions; if (old_site) site->track_motion = old_site->track_motion; else site->track_motion = FALSE; gtk_drag_dest_unset (widget); if (gtk_widget_get_realized (widget)) gtk_drag_dest_realized (widget, site); g_signal_connect (widget, "realize", G_CALLBACK (gtk_drag_dest_realized), site); g_signal_connect (widget, "hierarchy-changed", G_CALLBACK (gtk_drag_dest_hierarchy_changed), site); g_object_set_data_full (G_OBJECT (widget), I_("gtk-drag-dest"), site, gtk_drag_dest_site_destroy); } void gtk_drag_dest_set_proxy (GtkWidget *widget, GdkWindow *proxy_window, GdkDragProtocol protocol, gboolean use_coordinates) { g_warning ("gtk_drag_dest_set_proxy is not supported on Mac OS X."); } void gtk_drag_dest_unset (GtkWidget *widget) { GtkDragDestSite *old_site; g_return_if_fail (GTK_IS_WIDGET (widget)); old_site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); if (old_site) { g_signal_handlers_disconnect_by_func (widget, gtk_drag_dest_realized, old_site); g_signal_handlers_disconnect_by_func (widget, gtk_drag_dest_hierarchy_changed, old_site); } g_object_set_data (G_OBJECT (widget), I_("gtk-drag-dest"), NULL); } GtkTargetList* gtk_drag_dest_get_target_list (GtkWidget *widget) { GtkDragDestSite *site; g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); return site ? site->target_list : NULL; } void gtk_drag_dest_set_target_list (GtkWidget *widget, GtkTargetList *target_list) { GtkDragDestSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); if (!site) { g_warning ("Can't set a target list on a widget until you've called gtk_drag_dest_set() " "to make the widget into a drag destination"); return; } if (target_list) gtk_target_list_ref (target_list); if (site->target_list) gtk_target_list_unref (site->target_list); site->target_list = target_list; register_types (widget, site); } void gtk_drag_dest_add_text_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_dest_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, 0); gtk_drag_dest_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } void gtk_drag_dest_add_image_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_dest_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_image_targets (target_list, 0, FALSE); gtk_drag_dest_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } void gtk_drag_dest_add_uri_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_dest_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_uri_targets (target_list, 0); gtk_drag_dest_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } static void prepend_and_ref_widget (GtkWidget *widget, gpointer data) { GSList **slist_p = data; *slist_p = g_slist_prepend (*slist_p, g_object_ref (widget)); } static void gtk_drag_find_widget (GtkWidget *widget, GtkDragFindData *data) { GtkAllocation new_allocation; gint allocation_to_window_x = 0; gint allocation_to_window_y = 0; gint x_offset = 0; gint y_offset = 0; if (data->found || !gtk_widget_get_mapped (widget) || !gtk_widget_get_sensitive (widget)) return; /* Note that in the following code, we only count the * position as being inside a WINDOW widget if it is inside * widget->window; points that are outside of widget->window * but within the allocation are not counted. This is consistent * with the way we highlight drag targets. * * data->x,y are relative to widget->parent->window (if * widget is not a toplevel, widget->window otherwise). * We compute the allocation of widget in the same coordinates, * clipping to widget->window, and all intermediate * windows. If data->x,y is inside that, then we translate * our coordinates to be relative to widget->window and * recurse. */ gtk_widget_get_allocation (widget, &new_allocation); if (gtk_widget_get_parent (widget)) { gint tx, ty; GdkWindow *window = gtk_widget_get_window (widget); GdkWindow *parent_window; GtkAllocation allocation; parent_window = gtk_widget_get_window (gtk_widget_get_parent (widget)); /* Compute the offset from allocation-relative to * window-relative coordinates. */ gtk_widget_get_allocation (widget, &allocation); allocation_to_window_x = allocation.x; allocation_to_window_y = allocation.y; if (gtk_widget_get_has_window (widget)) { /* The allocation is relative to the parent window for * window widgets, not to widget->window. */ gdk_window_get_position (window, &tx, &ty); allocation_to_window_x -= tx; allocation_to_window_y -= ty; } new_allocation.x = 0 + allocation_to_window_x; new_allocation.y = 0 + allocation_to_window_y; while (window && window != parent_window) { GdkRectangle window_rect = { 0, 0, 0, 0 }; gdk_drawable_get_size (window, &window_rect.width, &window_rect.height); gdk_rectangle_intersect (&new_allocation, &window_rect, &new_allocation); gdk_window_get_position (window, &tx, &ty); new_allocation.x += tx; x_offset += tx; new_allocation.y += ty; y_offset += ty; window = gdk_window_get_parent (window); } if (!window) /* Window and widget heirarchies didn't match. */ return; } if (data->toplevel || ((data->x >= new_allocation.x) && (data->y >= new_allocation.y) && (data->x < new_allocation.x + new_allocation.width) && (data->y < new_allocation.y + new_allocation.height))) { /* First, check if the drag is in a valid drop site in * one of our children */ if (GTK_IS_CONTAINER (widget)) { GtkDragFindData new_data = *data; GSList *children = NULL; GSList *tmp_list; new_data.x -= x_offset; new_data.y -= y_offset; new_data.found = FALSE; new_data.toplevel = FALSE; /* need to reference children temporarily in case the * ::drag-motion/::drag-drop callbacks change the widget hierarchy. */ gtk_container_forall (GTK_CONTAINER (widget), prepend_and_ref_widget, &children); for (tmp_list = children; tmp_list; tmp_list = tmp_list->next) { if (!new_data.found && gtk_widget_is_drawable (tmp_list->data)) gtk_drag_find_widget (tmp_list->data, &new_data); g_object_unref (tmp_list->data); } g_slist_free (children); data->found = new_data.found; } /* If not, and this widget is registered as a drop site, check to * emit "drag-motion" to check if we are actually in * a drop site. */ if (!data->found && g_object_get_data (G_OBJECT (widget), "gtk-drag-dest")) { data->found = data->callback (widget, data->context, data->x - x_offset - allocation_to_window_x, data->y - y_offset - allocation_to_window_y, data->time); /* If so, send a "drag-leave" to the last widget */ if (data->found) { if (data->info->widget && data->info->widget != widget) { gtk_drag_dest_leave (data->info->widget, data->context, data->time); } data->info->widget = widget; } } } } static void gtk_drag_dest_leave (GtkWidget *widget, GdkDragContext *context, guint time) { GtkDragDestSite *site; site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); g_return_if_fail (site != NULL); if ((site->flags & GTK_DEST_DEFAULT_HIGHLIGHT) && site->have_drag) gtk_drag_unhighlight (widget); if (!(site->flags & GTK_DEST_DEFAULT_MOTION) || site->have_drag || site->track_motion) g_signal_emit_by_name (widget, "drag-leave", context, time); site->have_drag = FALSE; } static gboolean gtk_drag_dest_motion (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { GtkDragDestSite *site; GdkDragAction action = 0; gboolean retval; site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); g_return_val_if_fail (site != NULL, FALSE); if (site->track_motion || site->flags & GTK_DEST_DEFAULT_MOTION) { if (context->suggested_action & site->actions) action = context->suggested_action; if (action && gtk_drag_dest_find_target (widget, context, NULL)) { if (!site->have_drag) { site->have_drag = TRUE; if (site->flags & GTK_DEST_DEFAULT_HIGHLIGHT) gtk_drag_highlight (widget); } gdk_drag_status (context, action, time); } else { gdk_drag_status (context, 0, time); if (!site->track_motion) return TRUE; } } g_signal_emit_by_name (widget, "drag-motion", context, x, y, time, &retval); return (site->flags & GTK_DEST_DEFAULT_MOTION) ? TRUE : retval; } static gboolean gtk_drag_dest_drop (GtkWidget *widget, GdkDragContext *context, gint x, gint y, guint time) { GtkDragDestSite *site; GtkDragDestInfo *info; gboolean retval; site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); g_return_val_if_fail (site != NULL, FALSE); info = gtk_drag_get_dest_info (context, FALSE); g_return_val_if_fail (info != NULL, FALSE); info->drop_x = x; info->drop_y = y; if (site->flags & GTK_DEST_DEFAULT_DROP) { GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL); if (target == GDK_NONE) { gtk_drag_finish (context, FALSE, FALSE, time); return TRUE; } else gtk_drag_get_data (widget, context, target, time); } g_signal_emit_by_name (widget, "drag-drop", context, x, y, time, &retval); return (site->flags & GTK_DEST_DEFAULT_DROP) ? TRUE : retval; } void gtk_drag_dest_set_track_motion (GtkWidget *widget, gboolean track_motion) { GtkDragDestSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); g_return_if_fail (site != NULL); site->track_motion = track_motion != FALSE; } gboolean gtk_drag_dest_get_track_motion (GtkWidget *widget) { GtkDragDestSite *site; g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE); site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"); if (site) return site->track_motion; return FALSE; } void _gtk_drag_dest_handle_event (GtkWidget *toplevel, GdkEvent *event) { GtkDragDestInfo *info; GdkDragContext *context; g_return_if_fail (toplevel != NULL); g_return_if_fail (event != NULL); context = event->dnd.context; info = gtk_drag_get_dest_info (context, TRUE); /* Find the widget for the event */ switch (event->type) { case GDK_DRAG_ENTER: break; case GDK_DRAG_LEAVE: if (info->widget) { gtk_drag_dest_leave (info->widget, context, event->dnd.time); info->widget = NULL; } break; case GDK_DRAG_MOTION: case GDK_DROP_START: { GtkDragFindData data; gint tx, ty; if (event->type == GDK_DROP_START) { info->dropped = TRUE; /* We send a leave here so that the widget unhighlights * properly. */ if (info->widget) { gtk_drag_dest_leave (info->widget, context, event->dnd.time); info->widget = NULL; } } gdk_window_get_position (gtk_widget_get_window (toplevel), &tx, &ty); data.x = event->dnd.x_root - tx; data.y = event->dnd.y_root - ty; data.context = context; data.info = info; data.found = FALSE; data.toplevel = TRUE; data.callback = (event->type == GDK_DRAG_MOTION) ? gtk_drag_dest_motion : gtk_drag_dest_drop; data.time = event->dnd.time; gtk_drag_find_widget (toplevel, &data); if (info->widget && !data.found) { gtk_drag_dest_leave (info->widget, context, event->dnd.time); info->widget = NULL; } /* Send a reply. */ if (event->type == GDK_DRAG_MOTION) { if (!data.found) gdk_drag_status (context, 0, event->dnd.time); } break; default: g_assert_not_reached (); } } } GdkAtom gtk_drag_dest_find_target (GtkWidget *widget, GdkDragContext *context, GtkTargetList *target_list) { id dragging_info; NSPasteboard *pasteboard; GtkWidget *source_widget; GList *tmp_target; GList *tmp_source = NULL; GList *source_targets; g_return_val_if_fail (GTK_IS_WIDGET (widget), GDK_NONE); g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE); g_return_val_if_fail (!context->is_source, GDK_NONE); dragging_info = gdk_quartz_drag_context_get_dragging_info_libgtk_only (context); pasteboard = [dragging_info draggingPasteboard]; source_widget = gtk_drag_get_source_widget (context); if (target_list == NULL) target_list = gtk_drag_dest_get_target_list (widget); if (target_list == NULL) return GDK_NONE; source_targets = _gtk_quartz_pasteboard_types_to_atom_list ([pasteboard types]); tmp_target = target_list->list; while (tmp_target) { GtkTargetPair *pair = tmp_target->data; tmp_source = source_targets; while (tmp_source) { if (tmp_source->data == GUINT_TO_POINTER (pair->target)) { if ((!(pair->flags & GTK_TARGET_SAME_APP) || source_widget) && (!(pair->flags & GTK_TARGET_SAME_WIDGET) || (source_widget == widget))) { g_list_free (source_targets); return pair->target; } else break; } tmp_source = tmp_source->next; } tmp_target = tmp_target->next; } g_list_free (source_targets); return GDK_NONE; } static gboolean gtk_drag_begin_idle (gpointer arg) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; GdkDragContext* context = (GdkDragContext*) arg; GtkDragSourceInfo* info = gtk_drag_get_source_info (context, FALSE); NSWindow *nswindow; NSPasteboard *pasteboard; GtkDragSourceOwner *owner; NSPoint point; NSSet *types; NSImage *drag_image; g_assert (info != NULL); pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard]; owner = [[GtkDragSourceOwner alloc] initWithInfo:info]; types = _gtk_quartz_target_list_to_pasteboard_types (info->target_list); [pasteboard declareTypes:[types allObjects] owner:owner]; [owner release]; [types release]; if ((nswindow = get_toplevel_nswindow (info->source_widget)) == NULL) return FALSE; /* Ref the context. It's unreffed when the drag has been aborted */ g_object_ref (info->context); /* FIXME: If the event isn't a mouse event, use the global cursor position instead */ point = [info->nsevent locationInWindow]; drag_image = _gtk_quartz_create_image_from_pixbuf (info->icon_pixbuf); [nswindow dragImage:drag_image at:point offset:NSMakeSize(0, 0) event:info->nsevent pasteboard:pasteboard source:nswindow slideBack:YES]; [info->nsevent release]; [drag_image release]; [pool release]; return FALSE; } static GdkDragContext * gtk_drag_begin_internal (GtkWidget *widget, GtkDragSourceSite *site, GtkTargetList *target_list, GdkDragAction actions, gint button, GdkEvent *event) { GtkDragSourceInfo *info; GdkDragContext *context; NSWindow *nswindow; context = gdk_drag_begin (NULL, NULL); context->is_source = TRUE; info = gtk_drag_get_source_info (context, TRUE); info->source_widget = g_object_ref (widget); info->widget = g_object_ref (widget); info->target_list = target_list; gtk_target_list_ref (target_list); info->possible_actions = actions; g_signal_emit_by_name (widget, "drag-begin", info->context); /* Ensure that we have an icon before we start the drag; the * application may have set one in ::drag_begin, or it may * not have set one. */ if (!info->icon_pixbuf) { if (!site || site->icon_type == GTK_IMAGE_EMPTY) gtk_drag_set_icon_default (context); else switch (site->icon_type) { case GTK_IMAGE_PIXBUF: gtk_drag_set_icon_pixbuf (context, site->icon_data.pixbuf.pixbuf, -2, -2); break; case GTK_IMAGE_STOCK: gtk_drag_set_icon_stock (context, site->icon_data.stock.stock_id, -2, -2); break; case GTK_IMAGE_ICON_NAME: gtk_drag_set_icon_name (context, site->icon_data.name.icon_name, -2, -2); break; case GTK_IMAGE_EMPTY: default: g_assert_not_reached(); break; } } nswindow = get_toplevel_nswindow (widget); info->nsevent = [nswindow currentEvent]; [info->nsevent retain]; /* drag will begin in an idle handler to avoid nested run loops */ g_idle_add_full (G_PRIORITY_HIGH_IDLE, gtk_drag_begin_idle, context, NULL); gdk_pointer_ungrab (0); return context; } GdkDragContext * gtk_drag_begin (GtkWidget *widget, GtkTargetList *targets, GdkDragAction actions, gint button, GdkEvent *event) { g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); g_return_val_if_fail (gtk_widget_get_realized (widget), NULL); g_return_val_if_fail (targets != NULL, NULL); return gtk_drag_begin_internal (widget, NULL, targets, actions, button, event); } static gboolean gtk_drag_source_event_cb (GtkWidget *widget, GdkEvent *event, gpointer data) { GtkDragSourceSite *site; gboolean retval = FALSE; site = (GtkDragSourceSite *)data; switch (event->type) { case GDK_BUTTON_PRESS: if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask) { site->state |= (GDK_BUTTON1_MASK << (event->button.button - 1)); site->x = event->button.x; site->y = event->button.y; } break; case GDK_BUTTON_RELEASE: if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask) site->state &= ~(GDK_BUTTON1_MASK << (event->button.button - 1)); break; case GDK_MOTION_NOTIFY: if (site->state & event->motion.state & site->start_button_mask) { /* FIXME: This is really broken and can leave us * with a stuck grab */ int i; for (i=1; i<6; i++) { if (site->state & event->motion.state & GDK_BUTTON1_MASK << (i - 1)) break; } if (gtk_drag_check_threshold (widget, site->x, site->y, event->motion.x, event->motion.y)) { site->state = 0; gtk_drag_begin_internal (widget, site, site->target_list, site->actions, i, event); retval = TRUE; } } break; default: /* hit for 2/3BUTTON_PRESS */ break; } return retval; } void gtk_drag_source_set (GtkWidget *widget, GdkModifierType start_button_mask, const GtkTargetEntry *targets, gint n_targets, GdkDragAction actions) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); gtk_widget_add_events (widget, gtk_widget_get_events (widget) | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_MOTION_MASK); if (site) { if (site->target_list) gtk_target_list_unref (site->target_list); } else { site = g_new0 (GtkDragSourceSite, 1); site->icon_type = GTK_IMAGE_EMPTY; g_signal_connect (widget, "button-press-event", G_CALLBACK (gtk_drag_source_event_cb), site); g_signal_connect (widget, "button-release-event", G_CALLBACK (gtk_drag_source_event_cb), site); g_signal_connect (widget, "motion-notify-event", G_CALLBACK (gtk_drag_source_event_cb), site); g_object_set_data_full (G_OBJECT (widget), I_("gtk-site-data"), site, gtk_drag_source_site_destroy); } site->start_button_mask = start_button_mask; site->target_list = gtk_target_list_new (targets, n_targets); site->actions = actions; } /************************************************************* * gtk_drag_source_unset * Unregister this widget as a drag source. * arguments: * widget: * results: *************************************************************/ void gtk_drag_source_unset (GtkWidget *widget) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); if (site) { g_signal_handlers_disconnect_by_func (widget, gtk_drag_source_event_cb, site); g_object_set_data (G_OBJECT (widget), I_("gtk-site-data"), NULL); } } GtkTargetList * gtk_drag_source_get_target_list (GtkWidget *widget) { GtkDragSourceSite *site; g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); return site ? site->target_list : NULL; } void gtk_drag_source_set_target_list (GtkWidget *widget, GtkTargetList *target_list) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); if (site == NULL) { g_warning ("gtk_drag_source_set_target_list() requires the widget " "to already be a drag source."); return; } if (target_list) gtk_target_list_ref (target_list); if (site->target_list) gtk_target_list_unref (site->target_list); site->target_list = target_list; } /** * gtk_drag_source_add_text_targets: * @widget: a #GtkWidget that's is a drag source * * Add the text targets supported by #GtkSelection to * the target list of the drag source. The targets * are added with @info = 0. If you need another value, * use gtk_target_list_add_text_targets() and * gtk_drag_source_set_target_list(). * * Since: 2.6 **/ void gtk_drag_source_add_text_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_source_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_text_targets (target_list, 0); gtk_drag_source_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } void gtk_drag_source_add_image_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_source_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_image_targets (target_list, 0, TRUE); gtk_drag_source_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } void gtk_drag_source_add_uri_targets (GtkWidget *widget) { GtkTargetList *target_list; target_list = gtk_drag_source_get_target_list (widget); if (target_list) gtk_target_list_ref (target_list); else target_list = gtk_target_list_new (NULL, 0); gtk_target_list_add_uri_targets (target_list, 0); gtk_drag_source_set_target_list (widget, target_list); gtk_target_list_unref (target_list); } static void gtk_drag_source_unset_icon (GtkDragSourceSite *site) { switch (site->icon_type) { case GTK_IMAGE_EMPTY: break; case GTK_IMAGE_PIXBUF: g_object_unref (site->icon_data.pixbuf.pixbuf); break; case GTK_IMAGE_STOCK: g_free (site->icon_data.stock.stock_id); break; case GTK_IMAGE_ICON_NAME: g_free (site->icon_data.name.icon_name); break; default: g_assert_not_reached(); break; } site->icon_type = GTK_IMAGE_EMPTY; } static void gtk_drag_source_site_destroy (gpointer data) { GtkDragSourceSite *site = data; if (site->target_list) gtk_target_list_unref (site->target_list); gtk_drag_source_unset_icon (site); g_free (site); } void gtk_drag_source_set_icon_pixbuf (GtkWidget *widget, GdkPixbuf *pixbuf) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (GDK_IS_PIXBUF (pixbuf)); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); g_return_if_fail (site != NULL); g_object_ref (pixbuf); gtk_drag_source_unset_icon (site); site->icon_type = GTK_IMAGE_PIXBUF; site->icon_data.pixbuf.pixbuf = pixbuf; } /** * gtk_drag_source_set_icon_stock: * @widget: a #GtkWidget * @stock_id: the ID of the stock icon to use * * Sets the icon that will be used for drags from a particular source * to a stock icon. **/ void gtk_drag_source_set_icon_stock (GtkWidget *widget, const gchar *stock_id) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (stock_id != NULL); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); g_return_if_fail (site != NULL); gtk_drag_source_unset_icon (site); site->icon_type = GTK_IMAGE_STOCK; site->icon_data.stock.stock_id = g_strdup (stock_id); } /** * gtk_drag_source_set_icon_name: * @widget: a #GtkWidget * @icon_name: name of icon to use * * Sets the icon that will be used for drags from a particular source * to a themed icon. See the docs for #GtkIconTheme for more details. * * Since: 2.8 **/ void gtk_drag_source_set_icon_name (GtkWidget *widget, const gchar *icon_name) { GtkDragSourceSite *site; g_return_if_fail (GTK_IS_WIDGET (widget)); g_return_if_fail (icon_name != NULL); site = g_object_get_data (G_OBJECT (widget), "gtk-site-data"); g_return_if_fail (site != NULL); gtk_drag_source_unset_icon (site); site->icon_type = GTK_IMAGE_ICON_NAME; site->icon_data.name.icon_name = g_strdup (icon_name); } /** * gtk_drag_set_icon_widget: * @context: the context for a drag. (This must be called with a context for the source side of a drag) * @widget: a toplevel window to use as an icon. * @hot_x: the X offset within @widget of the hotspot. * @hot_y: the Y offset within @widget of the hotspot. * * Changes the icon for a widget to a given widget. GTK+ * will not destroy the icon, so if you don't want * it to persist, you should connect to the "drag-end" * signal and destroy it yourself. **/ void gtk_drag_set_icon_widget (GdkDragContext *context, GtkWidget *widget, gint hot_x, gint hot_y) { g_return_if_fail (GDK_IS_DRAG_CONTEXT (context)); g_return_if_fail (context->is_source); g_return_if_fail (GTK_IS_WIDGET (widget)); g_warning ("gtk_drag_set_icon_widget is not supported on Mac OS X"); } static void set_icon_stock_pixbuf (GdkDragContext *context, const gchar *stock_id, GdkPixbuf *pixbuf, gint hot_x, gint hot_y) { GtkDragSourceInfo *info; info = gtk_drag_get_source_info (context, FALSE); if (stock_id) { pixbuf = gtk_widget_render_icon (info->widget, stock_id, GTK_ICON_SIZE_DND, NULL); if (!pixbuf) { g_warning ("Cannot load drag icon from stock_id %s", stock_id); return; } } else g_object_ref (pixbuf); if (info->icon_pixbuf) g_object_unref (info->icon_pixbuf); info->icon_pixbuf = pixbuf; info->hot_x = hot_x; info->hot_y = hot_y; } /** * gtk_drag_set_icon_pixbuf: * @context: the context for a drag. (This must be called * with a context for the source side of a drag) * @pixbuf: the #GdkPixbuf to use as the drag icon. * @hot_x: the X offset within @widget of the hotspot. * @hot_y: the Y offset within @widget of the hotspot. * * Sets @pixbuf as the icon for a given drag. **/ void gtk_drag_set_icon_pixbuf (GdkDragContext *context, GdkPixbuf *pixbuf, gint hot_x, gint hot_y) { g_return_if_fail (GDK_IS_DRAG_CONTEXT (context)); g_return_if_fail (context->is_source); g_return_if_fail (GDK_IS_PIXBUF (pixbuf)); set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y); } /** * gtk_drag_set_icon_stock: * @context: the context for a drag. (This must be called * with a context for the source side of a drag) * @stock_id: the ID of the stock icon to use for the drag. * @hot_x: the X offset within the icon of the hotspot. * @hot_y: the Y offset within the icon of the hotspot. * * Sets the icon for a given drag from a stock ID. **/ void gtk_drag_set_icon_stock (GdkDragContext *context, const gchar *stock_id, gint hot_x, gint hot_y) { g_return_if_fail (GDK_IS_DRAG_CONTEXT (context)); g_return_if_fail (context->is_source); g_return_if_fail (stock_id != NULL); set_icon_stock_pixbuf (context, stock_id, NULL, hot_x, hot_y); } /** * gtk_drag_set_icon_name: * @context: the context for a drag. (This must be called * with a context for the source side of a drag) * @icon_name: name of icon to use * @hot_x: the X offset of the hotspot within the icon * @hot_y: the Y offset of the hotspot within the icon * * Sets the icon for a given drag from a named themed icon. See * the docs for #GtkIconTheme for more details. Note that the * size of the icon depends on the icon theme (the icon is * loaded at the symbolic size #GTK_ICON_SIZE_DND), thus * @hot_x and @hot_y have to be used with care. * * Since: 2.8 **/ void gtk_drag_set_icon_name (GdkDragContext *context, const gchar *icon_name, gint hot_x, gint hot_y) { GdkScreen *screen; GtkSettings *settings; GtkIconTheme *icon_theme; GdkPixbuf *pixbuf; gint width, height, icon_size; g_return_if_fail (GDK_IS_DRAG_CONTEXT (context)); g_return_if_fail (context->is_source); g_return_if_fail (icon_name != NULL); screen = gdk_window_get_screen (context->source_window); g_return_if_fail (screen != NULL); settings = gtk_settings_get_for_screen (screen); if (gtk_icon_size_lookup_for_settings (settings, GTK_ICON_SIZE_DND, &width, &height)) icon_size = MAX (width, height); else icon_size = 32; /* default value for GTK_ICON_SIZE_DND */ icon_theme = gtk_icon_theme_get_for_screen (screen); pixbuf = gtk_icon_theme_load_icon (icon_theme, icon_name, icon_size, 0, NULL); if (pixbuf) set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y); else g_warning ("Cannot load drag icon from icon name %s", icon_name); } /** * gtk_drag_set_icon_default: * @context: the context for a drag. (This must be called with a context for the source side of a drag) * * Sets the icon for a particular drag to the default * icon. **/ void gtk_drag_set_icon_default (GdkDragContext *context) { g_return_if_fail (GDK_IS_DRAG_CONTEXT (context)); g_return_if_fail (context->is_source); gtk_drag_set_icon_stock (context, GTK_STOCK_DND, -2, -2); } static void gtk_drag_source_info_destroy (GtkDragSourceInfo *info) { if (info->icon_pixbuf) g_object_unref (info->icon_pixbuf); g_signal_emit_by_name (info->widget, "drag-end", info->context); if (info->source_widget) g_object_unref (info->source_widget); if (info->widget) g_object_unref (info->widget); gtk_target_list_unref (info->target_list); gtk_drag_clear_source_info (info->context); g_object_unref (info->context); g_free (info); } static gboolean drag_drop_finished_idle_cb (gpointer data) { gtk_drag_source_info_destroy (data); return FALSE; } static void gtk_drag_drop_finished (GtkDragSourceInfo *info) { if (info->success && info->delete) g_signal_emit_by_name (info->source_widget, "drag-data-delete", info->context); /* Workaround for the fact that the NS API blocks until the drag is * over. This way the context is still valid when returning from * drag_begin, even if it will still be quite useless. See bug #501588. */ g_idle_add (drag_drop_finished_idle_cb, info); } /************************************************************* * _gtk_drag_source_handle_event: * Called from widget event handling code on Drag events * for drag sources. * * arguments: * toplevel: Toplevel widget that received the event * event: * results: *************************************************************/ void _gtk_drag_source_handle_event (GtkWidget *widget, GdkEvent *event) { GtkDragSourceInfo *info; GdkDragContext *context; g_return_if_fail (widget != NULL); g_return_if_fail (event != NULL); context = event->dnd.context; info = gtk_drag_get_source_info (context, FALSE); if (!info) return; switch (event->type) { case GDK_DROP_FINISHED: gtk_drag_drop_finished (info); break; default: g_assert_not_reached (); } } gboolean gtk_drag_check_threshold (GtkWidget *widget, gint start_x, gint start_y, gint current_x, gint current_y) { gint drag_threshold; g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE); g_object_get (gtk_widget_get_settings (widget), "gtk-dnd-drag-threshold", &drag_threshold, NULL); return (ABS (current_x - start_x) > drag_threshold || ABS (current_y - start_y) > drag_threshold); }