forked from AuroraMiddleware/gtk
88bf4a7a2d
If the filter didn't return GDK_EVENT_TRANSLATE, the event struct would be left unused and leaked.
2424 lines
74 KiB
C
2424 lines
74 KiB
C
/* GDK - The GIMP Drawing Kit
|
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* Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
|
||
* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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||
* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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||
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gdkx11dnd.h"
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#include "gdkdndprivate.h"
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#include "gdkmain.h"
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#include "gdkinternals.h"
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#include "gdkasync.h"
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#include "gdkproperty.h"
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#include "gdkprivate-x11.h"
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#include "gdkscreen-x11.h"
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#include "gdkdisplay-x11.h"
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <X11/extensions/shape.h>
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#ifdef HAVE_XCOMPOSITE
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#include <X11/extensions/Xcomposite.h>
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#endif
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#include <string.h>
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typedef enum {
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GDK_DRAG_STATUS_DRAG,
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GDK_DRAG_STATUS_MOTION_WAIT,
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GDK_DRAG_STATUS_ACTION_WAIT,
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GDK_DRAG_STATUS_DROP
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} GtkDragStatus;
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typedef struct {
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guint32 xid;
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gint x, y, width, height;
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gboolean mapped;
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gboolean shape_selected;
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gboolean shape_valid;
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cairo_region_t *shape;
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} GdkCacheChild;
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typedef struct {
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GList *children;
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GHashTable *child_hash;
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guint old_event_mask;
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GdkScreen *screen;
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gint ref_count;
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} GdkWindowCache;
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struct _GdkX11DragContext
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{
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GdkDragContext context;
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guint ref_count;
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guint16 last_x; /* Coordinates from last event */
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guint16 last_y;
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GdkDragAction old_action; /* The last action we sent to the source */
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GdkDragAction old_actions; /* The last actions we sent to the source */
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GdkDragAction xdnd_actions; /* What is currently set in XdndActionList */
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guint version; /* Xdnd protocol version */
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GSList *window_caches;
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Window dest_xid; /* The last window we looked up */
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Window drop_xid; /* The (non-proxied) window that is receiving drops */
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guint xdnd_targets_set : 1; /* Whether we've already set XdndTypeList */
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guint xdnd_actions_set : 1; /* Whether we've already set XdndActionList */
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guint xdnd_have_actions : 1; /* Whether an XdndActionList was provided */
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guint drag_status : 4; /* current status of drag */
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guint drop_failed : 1; /* Whether the drop was unsuccessful */
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};
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struct _GdkX11DragContextClass
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{
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GdkDragContextClass parent_class;
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};
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/* Forward declarations */
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static GdkWindowCache *gdk_window_cache_get (GdkScreen *screen);
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static GdkWindowCache *gdk_window_cache_ref (GdkWindowCache *cache);
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static void gdk_window_cache_unref (GdkWindowCache *cache);
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static GdkFilterReturn xdnd_enter_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static GdkFilterReturn xdnd_leave_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static GdkFilterReturn xdnd_position_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static GdkFilterReturn xdnd_status_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static GdkFilterReturn xdnd_finished_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static GdkFilterReturn xdnd_drop_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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static void xdnd_manage_source_filter (GdkDragContext *context,
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GdkWindow *window,
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gboolean add_filter);
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static GList *contexts;
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static GSList *window_caches;
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static const struct {
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const char *atom_name;
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GdkFilterFunc func;
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} xdnd_filters[] = {
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{ "XdndEnter", xdnd_enter_filter },
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{ "XdndLeave", xdnd_leave_filter },
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{ "XdndPosition", xdnd_position_filter },
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{ "XdndStatus", xdnd_status_filter },
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{ "XdndFinished", xdnd_finished_filter },
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{ "XdndDrop", xdnd_drop_filter },
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};
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G_DEFINE_TYPE (GdkX11DragContext, gdk_x11_drag_context, GDK_TYPE_DRAG_CONTEXT)
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static void
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gdk_x11_drag_context_init (GdkX11DragContext *context)
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{
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contexts = g_list_prepend (contexts, context);
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}
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static void gdk_x11_drag_context_finalize (GObject *object);
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static GdkWindow * gdk_x11_drag_context_find_window (GdkDragContext *context,
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GdkWindow *drag_window,
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GdkScreen *screen,
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gint x_root,
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gint y_root,
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GdkDragProtocol *protocol);
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static gboolean gdk_x11_drag_context_drag_motion (GdkDragContext *context,
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GdkWindow *dest_window,
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GdkDragProtocol protocol,
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gint x_root,
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gint y_root,
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GdkDragAction suggested_action,
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GdkDragAction possible_actions,
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guint32 time);
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static void gdk_x11_drag_context_drag_status (GdkDragContext *context,
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GdkDragAction action,
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guint32 time_);
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static void gdk_x11_drag_context_drag_abort (GdkDragContext *context,
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guint32 time_);
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static void gdk_x11_drag_context_drag_drop (GdkDragContext *context,
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guint32 time_);
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static void gdk_x11_drag_context_drop_reply (GdkDragContext *context,
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gboolean accept,
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guint32 time_);
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static void gdk_x11_drag_context_drop_finish (GdkDragContext *context,
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gboolean success,
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guint32 time_);
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static gboolean gdk_x11_drag_context_drop_status (GdkDragContext *context);
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static GdkAtom gdk_x11_drag_context_get_selection (GdkDragContext *context);
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static void
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gdk_x11_drag_context_class_init (GdkX11DragContextClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GdkDragContextClass *context_class = GDK_DRAG_CONTEXT_CLASS (klass);
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object_class->finalize = gdk_x11_drag_context_finalize;
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context_class->find_window = gdk_x11_drag_context_find_window;
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context_class->drag_status = gdk_x11_drag_context_drag_status;
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context_class->drag_motion = gdk_x11_drag_context_drag_motion;
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context_class->drag_abort = gdk_x11_drag_context_drag_abort;
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context_class->drag_drop = gdk_x11_drag_context_drag_drop;
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context_class->drop_reply = gdk_x11_drag_context_drop_reply;
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context_class->drop_finish = gdk_x11_drag_context_drop_finish;
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context_class->drop_status = gdk_x11_drag_context_drop_status;
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context_class->get_selection = gdk_x11_drag_context_get_selection;
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}
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static void
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gdk_x11_drag_context_finalize (GObject *object)
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{
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GdkDragContext *context = GDK_DRAG_CONTEXT (object);
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GdkX11DragContext *x11_context = GDK_X11_DRAG_CONTEXT (object);
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if (context->source_window)
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{
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if ((context->protocol == GDK_DRAG_PROTO_XDND) && !context->is_source)
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xdnd_manage_source_filter (context, context->source_window, FALSE);
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}
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g_slist_free_full (x11_context->window_caches, (GDestroyNotify)gdk_window_cache_unref);
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x11_context->window_caches = NULL;
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contexts = g_list_remove (contexts, context);
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G_OBJECT_CLASS (gdk_x11_drag_context_parent_class)->finalize (object);
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}
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/* Drag Contexts */
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static GdkDragContext *
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gdk_drag_context_find (GdkDisplay *display,
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gboolean is_source,
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Window source_xid,
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Window dest_xid)
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{
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GList *tmp_list;
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GdkDragContext *context;
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GdkX11DragContext *context_x11;
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Window context_dest_xid;
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for (tmp_list = contexts; tmp_list; tmp_list = tmp_list->next)
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{
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context = (GdkDragContext *)tmp_list->data;
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context_x11 = (GdkX11DragContext *)context;
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if ((context->source_window && gdk_window_get_display (context->source_window) != display) ||
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(context->dest_window && gdk_window_get_display (context->dest_window) != display))
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continue;
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context_dest_xid = context->dest_window
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? (context_x11->drop_xid
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? context_x11->drop_xid
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: GDK_WINDOW_XID (context->dest_window))
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: None;
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if ((!context->is_source == !is_source) &&
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((source_xid == None) || (context->source_window &&
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(GDK_WINDOW_XID (context->source_window) == source_xid))) &&
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((dest_xid == None) || (context_dest_xid == dest_xid)))
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return context;
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}
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return NULL;
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}
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static void
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precache_target_list (GdkDragContext *context)
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{
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if (context->targets)
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{
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GPtrArray *targets = g_ptr_array_new ();
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GList *tmp_list;
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int i;
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for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
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g_ptr_array_add (targets, gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)));
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_gdk_x11_precache_atoms (GDK_WINDOW_DISPLAY (context->source_window),
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(const gchar **)targets->pdata,
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targets->len);
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for (i =0; i < targets->len; i++)
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g_free (targets->pdata[i]);
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g_ptr_array_free (targets, TRUE);
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}
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}
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/* Utility functions */
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static void
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free_cache_child (GdkCacheChild *child,
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GdkDisplay *display)
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{
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if (child->shape)
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cairo_region_destroy (child->shape);
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if (child->shape_selected && display)
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{
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GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
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XShapeSelectInput (display_x11->xdisplay, child->xid, 0);
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}
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g_free (child);
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}
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static void
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gdk_window_cache_add (GdkWindowCache *cache,
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guint32 xid,
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gint x,
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gint y,
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gint width,
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gint height,
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gboolean mapped)
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{
|
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GdkCacheChild *child = g_new (GdkCacheChild, 1);
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child->xid = xid;
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child->x = x;
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child->y = y;
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child->width = width;
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child->height = height;
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child->mapped = mapped;
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child->shape_selected = FALSE;
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child->shape_valid = FALSE;
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child->shape = NULL;
|
||
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cache->children = g_list_prepend (cache->children, child);
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g_hash_table_insert (cache->child_hash, GUINT_TO_POINTER (xid),
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cache->children);
|
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}
|
||
|
||
static GdkFilterReturn
|
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gdk_window_cache_shape_filter (GdkXEvent *xev,
|
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GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
XEvent *xevent = (XEvent *)xev;
|
||
GdkWindowCache *cache = data;
|
||
|
||
GdkX11Display *display = GDK_X11_DISPLAY (gdk_screen_get_display (cache->screen));
|
||
|
||
if (display->have_shapes &&
|
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xevent->type == display->shape_event_base + ShapeNotify)
|
||
{
|
||
XShapeEvent *xse = (XShapeEvent*)xevent;
|
||
GList *node;
|
||
|
||
node = g_hash_table_lookup (cache->child_hash,
|
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GUINT_TO_POINTER (xse->window));
|
||
if (node)
|
||
{
|
||
GdkCacheChild *child = node->data;
|
||
child->shape_valid = FALSE;
|
||
if (child->shape)
|
||
{
|
||
cairo_region_destroy (child->shape);
|
||
child->shape = NULL;
|
||
}
|
||
}
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
return GDK_FILTER_CONTINUE;
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
gdk_window_cache_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
XEvent *xevent = (XEvent *)xev;
|
||
GdkWindowCache *cache = data;
|
||
|
||
switch (xevent->type)
|
||
{
|
||
case CirculateNotify:
|
||
break;
|
||
case ConfigureNotify:
|
||
{
|
||
XConfigureEvent *xce = &xevent->xconfigure;
|
||
GList *node;
|
||
|
||
node = g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xce->window));
|
||
if (node)
|
||
{
|
||
GdkCacheChild *child = node->data;
|
||
child->x = xce->x;
|
||
child->y = xce->y;
|
||
child->width = xce->width;
|
||
child->height = xce->height;
|
||
if (xce->above == None && (node->next))
|
||
{
|
||
GList *last = g_list_last (cache->children);
|
||
cache->children = g_list_remove_link (cache->children, node);
|
||
last->next = node;
|
||
node->next = NULL;
|
||
node->prev = last;
|
||
}
|
||
else
|
||
{
|
||
GList *above_node = g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xce->above));
|
||
if (above_node && node->next != above_node)
|
||
{
|
||
/* Put the window above (before in the list) above_node */
|
||
cache->children = g_list_remove_link (cache->children, node);
|
||
node->prev = above_node->prev;
|
||
if (node->prev)
|
||
node->prev->next = node;
|
||
else
|
||
cache->children = node;
|
||
node->next = above_node;
|
||
above_node->prev = node;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
case CreateNotify:
|
||
{
|
||
XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
|
||
|
||
if (!g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xcwe->window)))
|
||
gdk_window_cache_add (cache, xcwe->window,
|
||
xcwe->x, xcwe->y, xcwe->width, xcwe->height,
|
||
FALSE);
|
||
break;
|
||
}
|
||
case DestroyNotify:
|
||
{
|
||
XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
|
||
GList *node;
|
||
|
||
node = g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xdwe->window));
|
||
if (node)
|
||
{
|
||
GdkCacheChild *child = node->data;
|
||
|
||
g_hash_table_remove (cache->child_hash,
|
||
GUINT_TO_POINTER (xdwe->window));
|
||
cache->children = g_list_remove_link (cache->children, node);
|
||
/* window is destroyed, no need to disable ShapeNotify */
|
||
free_cache_child (child, NULL);
|
||
g_list_free_1 (node);
|
||
}
|
||
break;
|
||
}
|
||
case MapNotify:
|
||
{
|
||
XMapEvent *xme = &xevent->xmap;
|
||
GList *node;
|
||
|
||
node = g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xme->window));
|
||
if (node)
|
||
{
|
||
GdkCacheChild *child = node->data;
|
||
child->mapped = TRUE;
|
||
}
|
||
break;
|
||
}
|
||
case ReparentNotify:
|
||
break;
|
||
case UnmapNotify:
|
||
{
|
||
XMapEvent *xume = &xevent->xmap;
|
||
GList *node;
|
||
|
||
node = g_hash_table_lookup (cache->child_hash,
|
||
GUINT_TO_POINTER (xume->window));
|
||
if (node)
|
||
{
|
||
GdkCacheChild *child = node->data;
|
||
child->mapped = FALSE;
|
||
}
|
||
break;
|
||
}
|
||
default:
|
||
return GDK_FILTER_CONTINUE;
|
||
}
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
static GdkWindowCache *
|
||
gdk_window_cache_new (GdkScreen *screen)
|
||
{
|
||
XWindowAttributes xwa;
|
||
Display *xdisplay = GDK_SCREEN_XDISPLAY (screen);
|
||
GdkWindow *root_window = gdk_screen_get_root_window (screen);
|
||
GdkChildInfoX11 *children;
|
||
guint nchildren, i;
|
||
#ifdef HAVE_XCOMPOSITE
|
||
Window cow;
|
||
#endif
|
||
|
||
GdkWindowCache *result = g_new (GdkWindowCache, 1);
|
||
|
||
result->children = NULL;
|
||
result->child_hash = g_hash_table_new (g_direct_hash, NULL);
|
||
result->screen = screen;
|
||
result->ref_count = 1;
|
||
|
||
XGetWindowAttributes (xdisplay, GDK_WINDOW_XID (root_window), &xwa);
|
||
result->old_event_mask = xwa.your_event_mask;
|
||
|
||
if (G_UNLIKELY (!GDK_X11_DISPLAY (GDK_X11_SCREEN (screen)->display)->trusted_client))
|
||
{
|
||
GList *toplevel_windows, *list;
|
||
GdkWindow *window;
|
||
GdkWindowImplX11 *impl;
|
||
gint x, y, width, height;
|
||
|
||
toplevel_windows = gdk_screen_get_toplevel_windows (screen);
|
||
for (list = toplevel_windows; list; list = list->next)
|
||
{
|
||
window = GDK_WINDOW (list->data);
|
||
impl = GDK_WINDOW_IMPL_X11 (window->impl);
|
||
gdk_window_get_geometry (window, &x, &y, &width, &height);
|
||
gdk_window_cache_add (result, GDK_WINDOW_XID (window),
|
||
x * impl->window_scale, y * impl->window_scale,
|
||
width * impl->window_scale,
|
||
height * impl->window_scale,
|
||
gdk_window_is_visible (window));
|
||
}
|
||
g_list_free (toplevel_windows);
|
||
return result;
|
||
}
|
||
|
||
XSelectInput (xdisplay, GDK_WINDOW_XID (root_window),
|
||
result->old_event_mask | SubstructureNotifyMask);
|
||
gdk_window_add_filter (root_window, gdk_window_cache_filter, result);
|
||
gdk_window_add_filter (NULL, gdk_window_cache_shape_filter, result);
|
||
|
||
if (!_gdk_x11_get_window_child_info (gdk_screen_get_display (screen),
|
||
GDK_WINDOW_XID (root_window),
|
||
FALSE, NULL,
|
||
&children, &nchildren))
|
||
return result;
|
||
|
||
for (i = 0; i < nchildren ; i++)
|
||
{
|
||
gdk_window_cache_add (result, children[i].window,
|
||
children[i].x, children[i].y, children[i].width, children[i].height,
|
||
children[i].is_mapped);
|
||
}
|
||
|
||
g_free (children);
|
||
|
||
#ifdef HAVE_XCOMPOSITE
|
||
/*
|
||
* Add the composite overlay window to the cache, as this can be a reasonable
|
||
* Xdnd proxy as well.
|
||
* This is only done when the screen is composited in order to avoid mapping
|
||
* the COW. We assume that the CM is using the COW (which is true for pretty
|
||
* much any CM currently in use).
|
||
*/
|
||
if (gdk_screen_is_composited (screen))
|
||
{
|
||
cow = XCompositeGetOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
|
||
gdk_window_cache_add (result, cow, 0, 0,
|
||
gdk_screen_get_width (screen) * GDK_X11_SCREEN(screen)->window_scale,
|
||
gdk_screen_get_height (screen) * GDK_X11_SCREEN(screen)->window_scale,
|
||
TRUE);
|
||
XCompositeReleaseOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
|
||
}
|
||
#endif
|
||
|
||
return result;
|
||
}
|
||
|
||
static void
|
||
gdk_window_cache_destroy (GdkWindowCache *cache)
|
||
{
|
||
GdkWindow *root_window = gdk_screen_get_root_window (cache->screen);
|
||
GdkDisplay *display;
|
||
|
||
XSelectInput (GDK_WINDOW_XDISPLAY (root_window),
|
||
GDK_WINDOW_XID (root_window),
|
||
cache->old_event_mask);
|
||
gdk_window_remove_filter (root_window, gdk_window_cache_filter, cache);
|
||
gdk_window_remove_filter (NULL, gdk_window_cache_shape_filter, cache);
|
||
|
||
display = gdk_screen_get_display (cache->screen);
|
||
|
||
gdk_x11_display_error_trap_push (display);
|
||
g_list_foreach (cache->children, (GFunc)free_cache_child, display);
|
||
gdk_x11_display_error_trap_pop_ignored (display);
|
||
|
||
g_list_free (cache->children);
|
||
g_hash_table_destroy (cache->child_hash);
|
||
|
||
g_free (cache);
|
||
}
|
||
|
||
static GdkWindowCache *
|
||
gdk_window_cache_ref (GdkWindowCache *cache)
|
||
{
|
||
cache->ref_count += 1;
|
||
|
||
return cache;
|
||
}
|
||
|
||
static void
|
||
gdk_window_cache_unref (GdkWindowCache *cache)
|
||
{
|
||
g_assert (cache->ref_count > 0);
|
||
|
||
cache->ref_count -= 1;
|
||
|
||
if (cache->ref_count == 0)
|
||
{
|
||
window_caches = g_slist_remove (window_caches, cache);
|
||
gdk_window_cache_destroy (cache);
|
||
}
|
||
}
|
||
|
||
GdkWindowCache *
|
||
gdk_window_cache_get (GdkScreen *screen)
|
||
{
|
||
GSList *list;
|
||
GdkWindowCache *cache;
|
||
|
||
for (list = window_caches; list; list = list->next)
|
||
{
|
||
cache = list->data;
|
||
if (cache->screen == screen)
|
||
return gdk_window_cache_ref (cache);
|
||
}
|
||
|
||
cache = gdk_window_cache_new (screen);
|
||
|
||
window_caches = g_slist_prepend (window_caches, cache);
|
||
|
||
return cache;
|
||
}
|
||
|
||
static gboolean
|
||
is_pointer_within_shape (GdkDisplay *display,
|
||
GdkCacheChild *child,
|
||
gint x_pos,
|
||
gint y_pos)
|
||
{
|
||
if (!child->shape_selected)
|
||
{
|
||
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
XShapeSelectInput (display_x11->xdisplay, child->xid, ShapeNotifyMask);
|
||
child->shape_selected = TRUE;
|
||
}
|
||
if (!child->shape_valid)
|
||
{
|
||
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
||
cairo_region_t *input_shape;
|
||
|
||
child->shape = NULL;
|
||
if (gdk_display_supports_shapes (display))
|
||
child->shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
|
||
child->xid, 1, ShapeBounding);
|
||
#ifdef ShapeInput
|
||
input_shape = NULL;
|
||
if (gdk_display_supports_input_shapes (display))
|
||
input_shape = _gdk_x11_xwindow_get_shape (display_x11->xdisplay,
|
||
child->xid, 1, ShapeInput);
|
||
|
||
if (child->shape && input_shape)
|
||
{
|
||
cairo_region_intersect (child->shape, input_shape);
|
||
cairo_region_destroy (input_shape);
|
||
}
|
||
else if (input_shape)
|
||
{
|
||
child->shape = input_shape;
|
||
}
|
||
#endif
|
||
|
||
child->shape_valid = TRUE;
|
||
}
|
||
|
||
return child->shape == NULL ||
|
||
cairo_region_contains_point (child->shape, x_pos, y_pos);
|
||
}
|
||
|
||
static Window
|
||
get_client_window_at_coords_recurse (GdkDisplay *display,
|
||
Window win,
|
||
gboolean is_toplevel,
|
||
gint x,
|
||
gint y)
|
||
{
|
||
GdkChildInfoX11 *children;
|
||
unsigned int nchildren;
|
||
int i;
|
||
gboolean found_child = FALSE;
|
||
GdkChildInfoX11 child = { 0, };
|
||
gboolean has_wm_state = FALSE;
|
||
|
||
if (!_gdk_x11_get_window_child_info (display, win, TRUE,
|
||
is_toplevel? &has_wm_state : NULL,
|
||
&children, &nchildren))
|
||
return None;
|
||
|
||
if (has_wm_state)
|
||
{
|
||
g_free (children);
|
||
|
||
return win;
|
||
}
|
||
|
||
for (i = nchildren - 1; (i >= 0) && !found_child; i--)
|
||
{
|
||
GdkChildInfoX11 *cur_child = &children[i];
|
||
|
||
if ((cur_child->is_mapped) && (cur_child->window_class == InputOutput) &&
|
||
(x >= cur_child->x) && (x < cur_child->x + cur_child->width) &&
|
||
(y >= cur_child->y) && (y < cur_child->y + cur_child->height))
|
||
{
|
||
x -= cur_child->x;
|
||
y -= cur_child->y;
|
||
child = *cur_child;
|
||
found_child = TRUE;
|
||
}
|
||
}
|
||
|
||
g_free (children);
|
||
|
||
if (found_child)
|
||
{
|
||
if (child.has_wm_state)
|
||
return child.window;
|
||
else
|
||
return get_client_window_at_coords_recurse (display, child.window, FALSE, x, y);
|
||
}
|
||
else
|
||
return None;
|
||
}
|
||
|
||
static Window
|
||
get_client_window_at_coords (GdkWindowCache *cache,
|
||
Window ignore,
|
||
gint x_root,
|
||
gint y_root)
|
||
{
|
||
GList *tmp_list;
|
||
Window retval = None;
|
||
GdkDisplay *display;
|
||
|
||
display = gdk_screen_get_display (cache->screen);
|
||
|
||
gdk_x11_display_error_trap_push (display);
|
||
|
||
tmp_list = cache->children;
|
||
|
||
while (tmp_list && !retval)
|
||
{
|
||
GdkCacheChild *child = tmp_list->data;
|
||
|
||
if ((child->xid != ignore) && (child->mapped))
|
||
{
|
||
if ((x_root >= child->x) && (x_root < child->x + child->width) &&
|
||
(y_root >= child->y) && (y_root < child->y + child->height))
|
||
{
|
||
if (!is_pointer_within_shape (display, child,
|
||
x_root - child->x,
|
||
y_root - child->y))
|
||
{
|
||
tmp_list = tmp_list->next;
|
||
continue;
|
||
}
|
||
|
||
retval = get_client_window_at_coords_recurse (display,
|
||
child->xid, TRUE,
|
||
x_root - child->x,
|
||
y_root - child->y);
|
||
if (!retval)
|
||
retval = child->xid;
|
||
}
|
||
}
|
||
tmp_list = tmp_list->next;
|
||
}
|
||
|
||
gdk_x11_display_error_trap_pop_ignored (display);
|
||
|
||
if (retval)
|
||
return retval;
|
||
else
|
||
return GDK_WINDOW_XID (gdk_screen_get_root_window (cache->screen));
|
||
}
|
||
|
||
#ifdef G_ENABLE_DEBUG
|
||
static void
|
||
print_target_list (GList *targets)
|
||
{
|
||
while (targets)
|
||
{
|
||
gchar *name = gdk_atom_name (GDK_POINTER_TO_ATOM (targets->data));
|
||
g_message ("\t%s", name);
|
||
g_free (name);
|
||
targets = targets->next;
|
||
}
|
||
}
|
||
#endif /* G_ENABLE_DEBUG */
|
||
|
||
/*************************************************************
|
||
***************************** XDND **************************
|
||
*************************************************************/
|
||
|
||
/* Utility functions */
|
||
|
||
static struct {
|
||
const gchar *name;
|
||
GdkAtom atom;
|
||
GdkDragAction action;
|
||
} xdnd_actions_table[] = {
|
||
{ "XdndActionCopy", None, GDK_ACTION_COPY },
|
||
{ "XdndActionMove", None, GDK_ACTION_MOVE },
|
||
{ "XdndActionLink", None, GDK_ACTION_LINK },
|
||
{ "XdndActionAsk", None, GDK_ACTION_ASK },
|
||
{ "XdndActionPrivate", None, GDK_ACTION_COPY },
|
||
};
|
||
|
||
static const gint xdnd_n_actions = G_N_ELEMENTS (xdnd_actions_table);
|
||
static gboolean xdnd_actions_initialized = FALSE;
|
||
|
||
static void
|
||
xdnd_initialize_actions (void)
|
||
{
|
||
gint i;
|
||
|
||
xdnd_actions_initialized = TRUE;
|
||
for (i = 0; i < xdnd_n_actions; i++)
|
||
xdnd_actions_table[i].atom = gdk_atom_intern_static_string (xdnd_actions_table[i].name);
|
||
}
|
||
|
||
static GdkDragAction
|
||
xdnd_action_from_atom (GdkDisplay *display,
|
||
Atom xatom)
|
||
{
|
||
GdkAtom atom;
|
||
gint i;
|
||
|
||
if (xatom == None)
|
||
return 0;
|
||
|
||
atom = gdk_x11_xatom_to_atom_for_display (display, xatom);
|
||
|
||
if (!xdnd_actions_initialized)
|
||
xdnd_initialize_actions();
|
||
|
||
for (i = 0; i < xdnd_n_actions; i++)
|
||
if (atom == xdnd_actions_table[i].atom)
|
||
return xdnd_actions_table[i].action;
|
||
|
||
return 0;
|
||
}
|
||
|
||
static Atom
|
||
xdnd_action_to_atom (GdkDisplay *display,
|
||
GdkDragAction action)
|
||
{
|
||
gint i;
|
||
|
||
if (!xdnd_actions_initialized)
|
||
xdnd_initialize_actions();
|
||
|
||
for (i = 0; i < xdnd_n_actions; i++)
|
||
if (action == xdnd_actions_table[i].action)
|
||
return gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom);
|
||
|
||
return None;
|
||
}
|
||
|
||
/* Source side */
|
||
|
||
static GdkFilterReturn
|
||
xdnd_status_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
GdkDisplay *display;
|
||
XEvent *xevent = (XEvent *)xev;
|
||
guint32 dest_window = xevent->xclient.data.l[0];
|
||
guint32 flags = xevent->xclient.data.l[1];
|
||
Atom action = xevent->xclient.data.l[4];
|
||
GdkDragContext *context;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndStatus: dest_window: %#x action: %ld",
|
||
dest_window, action));
|
||
|
||
display = gdk_window_get_display (event->any.window);
|
||
context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window);
|
||
|
||
if (context)
|
||
{
|
||
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
if (context_x11->drag_status == GDK_DRAG_STATUS_MOTION_WAIT)
|
||
context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
|
||
|
||
event->dnd.send_event = FALSE;
|
||
event->dnd.type = GDK_DRAG_STATUS;
|
||
event->dnd.context = context;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (context));
|
||
g_object_ref (context);
|
||
|
||
event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */
|
||
if (!(action != 0) != !(flags & 1))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_warning ("Received status event with flags not corresponding to action!\n"));
|
||
action = 0;
|
||
}
|
||
|
||
context->action = xdnd_action_from_atom (display, action);
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
xdnd_finished_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
GdkDisplay *display;
|
||
XEvent *xevent = (XEvent *)xev;
|
||
guint32 dest_window = xevent->xclient.data.l[0];
|
||
GdkDragContext *context;
|
||
GdkX11DragContext *context_x11;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndFinished: dest_window: %#x", dest_window));
|
||
|
||
display = gdk_window_get_display (event->any.window);
|
||
context = gdk_drag_context_find (display, TRUE, xevent->xclient.window, dest_window);
|
||
|
||
if (context)
|
||
{
|
||
context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
if (context_x11->version == 5)
|
||
context_x11->drop_failed = xevent->xclient.data.l[1] == 0;
|
||
|
||
event->dnd.type = GDK_DROP_FINISHED;
|
||
event->dnd.context = context;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (context));
|
||
g_object_ref (context);
|
||
|
||
event->dnd.time = GDK_CURRENT_TIME; /* FIXME? */
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
static void
|
||
xdnd_set_targets (GdkX11DragContext *context_x11)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
Atom *atomlist;
|
||
GList *tmp_list = context->targets;
|
||
gint i;
|
||
gint n_atoms = g_list_length (context->targets);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
|
||
atomlist = g_new (Atom, n_atoms);
|
||
i = 0;
|
||
while (tmp_list)
|
||
{
|
||
atomlist[i] = gdk_x11_atom_to_xatom_for_display (display, GDK_POINTER_TO_ATOM (tmp_list->data));
|
||
tmp_list = tmp_list->next;
|
||
i++;
|
||
}
|
||
|
||
XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window),
|
||
GDK_WINDOW_XID (context->source_window),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"),
|
||
XA_ATOM, 32, PropModeReplace,
|
||
(guchar *)atomlist, n_atoms);
|
||
|
||
g_free (atomlist);
|
||
|
||
context_x11->xdnd_targets_set = 1;
|
||
}
|
||
|
||
static void
|
||
xdnd_set_actions (GdkX11DragContext *context_x11)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
Atom *atomlist;
|
||
gint i;
|
||
gint n_atoms;
|
||
guint actions;
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
|
||
if (!xdnd_actions_initialized)
|
||
xdnd_initialize_actions();
|
||
|
||
actions = context->actions;
|
||
n_atoms = 0;
|
||
for (i = 0; i < xdnd_n_actions; i++)
|
||
{
|
||
if (actions & xdnd_actions_table[i].action)
|
||
{
|
||
actions &= ~xdnd_actions_table[i].action;
|
||
n_atoms++;
|
||
}
|
||
}
|
||
|
||
atomlist = g_new (Atom, n_atoms);
|
||
|
||
actions = context->actions;
|
||
n_atoms = 0;
|
||
for (i = 0; i < xdnd_n_actions; i++)
|
||
{
|
||
if (actions & xdnd_actions_table[i].action)
|
||
{
|
||
actions &= ~xdnd_actions_table[i].action;
|
||
atomlist[n_atoms] = gdk_x11_atom_to_xatom_for_display (display, xdnd_actions_table[i].atom);
|
||
n_atoms++;
|
||
}
|
||
}
|
||
|
||
XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window),
|
||
GDK_WINDOW_XID (context->source_window),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"),
|
||
XA_ATOM, 32, PropModeReplace,
|
||
(guchar *)atomlist, n_atoms);
|
||
|
||
g_free (atomlist);
|
||
|
||
context_x11->xdnd_actions_set = TRUE;
|
||
context_x11->xdnd_actions = context->actions;
|
||
}
|
||
|
||
static void
|
||
send_client_message_async_cb (Window window,
|
||
gboolean success,
|
||
gpointer data)
|
||
{
|
||
GdkDragContext *context = data;
|
||
GDK_NOTE (DND,
|
||
g_message ("Got async callback for #%lx, success = %d",
|
||
window, success));
|
||
|
||
/* On failure, we immediately continue with the protocol
|
||
* so we don't end up blocking for a timeout
|
||
*/
|
||
if (!success &&
|
||
context->dest_window &&
|
||
window == GDK_WINDOW_XID (context->dest_window))
|
||
{
|
||
GdkEvent *temp_event;
|
||
GdkX11DragContext *context_x11 = data;
|
||
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
context->action = 0;
|
||
|
||
context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
|
||
|
||
temp_event = gdk_event_new (GDK_DRAG_STATUS);
|
||
temp_event->dnd.window = g_object_ref (context->source_window);
|
||
temp_event->dnd.send_event = TRUE;
|
||
temp_event->dnd.context = g_object_ref (context);
|
||
temp_event->dnd.time = GDK_CURRENT_TIME;
|
||
gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
|
||
|
||
gdk_event_put (temp_event);
|
||
|
||
gdk_event_free (temp_event);
|
||
}
|
||
|
||
g_object_unref (context);
|
||
}
|
||
|
||
|
||
static GdkDisplay *
|
||
gdk_drag_context_get_display (GdkDragContext *context)
|
||
{
|
||
if (context->source_window)
|
||
return GDK_WINDOW_DISPLAY (context->source_window);
|
||
else if (context->dest_window)
|
||
return GDK_WINDOW_DISPLAY (context->dest_window);
|
||
|
||
g_assert_not_reached ();
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
send_client_message_async (GdkDragContext *context,
|
||
Window window,
|
||
gboolean propagate,
|
||
glong event_mask,
|
||
XClientMessageEvent *event_send)
|
||
{
|
||
GdkDisplay *display = gdk_drag_context_get_display (context);
|
||
|
||
g_object_ref (context);
|
||
|
||
_gdk_x11_send_client_message_async (display, window,
|
||
propagate, event_mask, event_send,
|
||
send_client_message_async_cb, context);
|
||
}
|
||
|
||
static gboolean
|
||
xdnd_send_xevent (GdkX11DragContext *context_x11,
|
||
GdkWindow *window,
|
||
gboolean propagate,
|
||
XEvent *event_send)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = gdk_drag_context_get_display (context);
|
||
Window xwindow;
|
||
glong event_mask;
|
||
|
||
g_assert (event_send->xany.type == ClientMessage);
|
||
|
||
/* We short-circuit messages to ourselves */
|
||
if (gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN)
|
||
{
|
||
gint i;
|
||
|
||
for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++)
|
||
{
|
||
if (gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name) ==
|
||
event_send->xclient.message_type)
|
||
{
|
||
GdkEvent *temp_event;
|
||
|
||
temp_event = gdk_event_new (GDK_NOTHING);
|
||
temp_event->any.window = g_object_ref (window);
|
||
|
||
if ((*xdnd_filters[i].func) (event_send, temp_event, NULL) == GDK_FILTER_TRANSLATE)
|
||
gdk_event_put (temp_event);
|
||
|
||
gdk_event_free (temp_event);
|
||
|
||
return TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
xwindow = GDK_WINDOW_XID (window);
|
||
|
||
if (_gdk_x11_display_is_root_window (display, xwindow))
|
||
event_mask = ButtonPressMask;
|
||
else
|
||
event_mask = 0;
|
||
|
||
send_client_message_async (context, xwindow, propagate, event_mask,
|
||
&event_send->xclient);
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static void
|
||
xdnd_send_enter (GdkX11DragContext *context_x11)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->dest_window);
|
||
XEvent xev;
|
||
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndEnter");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = context_x11->drop_xid
|
||
? context_x11->drop_xid
|
||
: GDK_WINDOW_XID (context->dest_window);
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
|
||
xev.xclient.data.l[1] = (context_x11->version << 24); /* version */
|
||
xev.xclient.data.l[2] = 0;
|
||
xev.xclient.data.l[3] = 0;
|
||
xev.xclient.data.l[4] = 0;
|
||
|
||
GDK_NOTE(DND,
|
||
g_message ("Sending enter source window %#lx XDND protocol version %d\n",
|
||
GDK_WINDOW_XID (context->source_window), context_x11->version));
|
||
if (g_list_length (context->targets) > 3)
|
||
{
|
||
if (!context_x11->xdnd_targets_set)
|
||
xdnd_set_targets (context_x11);
|
||
xev.xclient.data.l[1] |= 1;
|
||
}
|
||
else
|
||
{
|
||
GList *tmp_list = context->targets;
|
||
gint i = 2;
|
||
|
||
while (tmp_list)
|
||
{
|
||
xev.xclient.data.l[i] = gdk_x11_atom_to_xatom_for_display (display,
|
||
GDK_POINTER_TO_ATOM (tmp_list->data));
|
||
tmp_list = tmp_list->next;
|
||
i++;
|
||
}
|
||
}
|
||
|
||
if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->dest_window)));
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
}
|
||
}
|
||
|
||
static void
|
||
xdnd_send_leave (GdkX11DragContext *context_x11)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
XEvent xev;
|
||
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndLeave");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = context_x11->drop_xid
|
||
? context_x11->drop_xid
|
||
: GDK_WINDOW_XID (context->dest_window);
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
|
||
xev.xclient.data.l[1] = 0;
|
||
xev.xclient.data.l[2] = 0;
|
||
xev.xclient.data.l[3] = 0;
|
||
xev.xclient.data.l[4] = 0;
|
||
|
||
if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->dest_window)));
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
}
|
||
}
|
||
|
||
static void
|
||
xdnd_send_drop (GdkX11DragContext *context_x11,
|
||
guint32 time)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
XEvent xev;
|
||
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndDrop");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = context_x11->drop_xid
|
||
? context_x11->drop_xid
|
||
: GDK_WINDOW_XID (context->dest_window);
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
|
||
xev.xclient.data.l[1] = 0;
|
||
xev.xclient.data.l[2] = time;
|
||
xev.xclient.data.l[3] = 0;
|
||
xev.xclient.data.l[4] = 0;
|
||
|
||
if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->dest_window)));
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
}
|
||
}
|
||
|
||
static void
|
||
xdnd_send_motion (GdkX11DragContext *context_x11,
|
||
gint x_root,
|
||
gint y_root,
|
||
GdkDragAction action,
|
||
guint32 time)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
XEvent xev;
|
||
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndPosition");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = context_x11->drop_xid
|
||
? context_x11->drop_xid
|
||
: GDK_WINDOW_XID (context->dest_window);
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
|
||
xev.xclient.data.l[1] = 0;
|
||
xev.xclient.data.l[2] = (x_root << 16) | y_root;
|
||
xev.xclient.data.l[3] = time;
|
||
xev.xclient.data.l[4] = xdnd_action_to_atom (display, action);
|
||
|
||
if (!xdnd_send_xevent (context_x11, context->dest_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->dest_window)));
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
}
|
||
context_x11->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
|
||
}
|
||
|
||
static guint32
|
||
xdnd_check_dest (GdkDisplay *display,
|
||
Window win,
|
||
guint *xdnd_version)
|
||
{
|
||
gboolean retval = FALSE;
|
||
Atom type = None;
|
||
int format;
|
||
unsigned long nitems, after;
|
||
guchar *data;
|
||
Atom *version;
|
||
Window *proxy_data;
|
||
Window proxy;
|
||
Atom xdnd_proxy_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndProxy");
|
||
Atom xdnd_aware_atom = gdk_x11_get_xatom_by_name_for_display (display, "XdndAware");
|
||
|
||
proxy = None;
|
||
|
||
gdk_x11_display_error_trap_push (display);
|
||
if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), win,
|
||
xdnd_proxy_atom, 0,
|
||
1, False, AnyPropertyType,
|
||
&type, &format, &nitems, &after,
|
||
&data) == Success)
|
||
{
|
||
if (type != None)
|
||
{
|
||
proxy_data = (Window *)data;
|
||
|
||
if ((format == 32) && (nitems == 1))
|
||
{
|
||
proxy = *proxy_data;
|
||
}
|
||
else
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_warning ("Invalid XdndProxy "
|
||
"property on window %ld\n", win));
|
||
}
|
||
|
||
XFree (proxy_data);
|
||
}
|
||
|
||
if ((XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), proxy ? proxy : win,
|
||
xdnd_aware_atom, 0,
|
||
1, False, AnyPropertyType,
|
||
&type, &format, &nitems, &after,
|
||
&data) == Success) &&
|
||
type != None)
|
||
{
|
||
version = (Atom *)data;
|
||
|
||
if ((format == 32) && (nitems == 1))
|
||
{
|
||
if (*version >= 3)
|
||
retval = TRUE;
|
||
if (xdnd_version)
|
||
*xdnd_version = *version;
|
||
}
|
||
else
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_warning ("Invalid XdndAware "
|
||
"property on window %ld\n", win));
|
||
}
|
||
|
||
XFree (version);
|
||
}
|
||
}
|
||
|
||
gdk_x11_display_error_trap_pop_ignored (display);
|
||
|
||
return retval ? (proxy ? proxy : win) : None;
|
||
}
|
||
|
||
/* Target side */
|
||
|
||
static void
|
||
xdnd_read_actions (GdkX11DragContext *context_x11)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
Atom type;
|
||
int format;
|
||
gulong nitems, after;
|
||
guchar *data;
|
||
Atom *atoms;
|
||
gint i;
|
||
|
||
context_x11->xdnd_have_actions = FALSE;
|
||
|
||
if (gdk_window_get_window_type (context->source_window) == GDK_WINDOW_FOREIGN)
|
||
{
|
||
/* Get the XdndActionList, if set */
|
||
|
||
gdk_x11_display_error_trap_push (display);
|
||
if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display),
|
||
GDK_WINDOW_XID (context->source_window),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList"),
|
||
0, 65536,
|
||
False, XA_ATOM, &type, &format, &nitems,
|
||
&after, &data) == Success &&
|
||
type == XA_ATOM)
|
||
{
|
||
atoms = (Atom *)data;
|
||
|
||
context->actions = 0;
|
||
|
||
for (i = 0; i < nitems; i++)
|
||
context->actions |= xdnd_action_from_atom (display, atoms[i]);
|
||
|
||
context_x11->xdnd_have_actions = TRUE;
|
||
|
||
#ifdef G_ENABLE_DEBUG
|
||
if (_gdk_debug_flags & GDK_DEBUG_DND)
|
||
{
|
||
GString *action_str = g_string_new (NULL);
|
||
if (context->actions & GDK_ACTION_MOVE)
|
||
g_string_append(action_str, "MOVE ");
|
||
if (context->actions & GDK_ACTION_COPY)
|
||
g_string_append(action_str, "COPY ");
|
||
if (context->actions & GDK_ACTION_LINK)
|
||
g_string_append(action_str, "LINK ");
|
||
if (context->actions & GDK_ACTION_ASK)
|
||
g_string_append(action_str, "ASK ");
|
||
|
||
g_message("Xdnd actions = %s", action_str->str);
|
||
g_string_free (action_str, TRUE);
|
||
}
|
||
#endif /* G_ENABLE_DEBUG */
|
||
|
||
}
|
||
|
||
if (data)
|
||
XFree (data);
|
||
|
||
gdk_x11_display_error_trap_pop_ignored (display);
|
||
}
|
||
else
|
||
{
|
||
/* Local drag
|
||
*/
|
||
GdkDragContext *source_context;
|
||
|
||
source_context = gdk_drag_context_find (display, TRUE,
|
||
GDK_WINDOW_XID (context->source_window),
|
||
GDK_WINDOW_XID (context->dest_window));
|
||
|
||
if (source_context)
|
||
{
|
||
context->actions = source_context->actions;
|
||
context_x11->xdnd_have_actions = TRUE;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* We have to make sure that the XdndActionList we keep internally
|
||
* is up to date with the XdndActionList on the source window
|
||
* because we get no notification, because Xdnd wasn’t meant
|
||
* to continually send actions. So we select on PropertyChangeMask
|
||
* and add this filter.
|
||
*/
|
||
static GdkFilterReturn
|
||
xdnd_source_window_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer cb_data)
|
||
{
|
||
XEvent *xevent = (XEvent *)xev;
|
||
GdkX11DragContext *context_x11 = cb_data;
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY(event->any.window);
|
||
|
||
if ((xevent->xany.type == PropertyNotify) &&
|
||
(xevent->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "XdndActionList")))
|
||
{
|
||
xdnd_read_actions (context_x11);
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
return GDK_FILTER_CONTINUE;
|
||
}
|
||
|
||
static void
|
||
xdnd_manage_source_filter (GdkDragContext *context,
|
||
GdkWindow *window,
|
||
gboolean add_filter)
|
||
{
|
||
if (!GDK_WINDOW_DESTROYED (window) &&
|
||
gdk_window_get_window_type (window) == GDK_WINDOW_FOREIGN)
|
||
{
|
||
gdk_x11_display_error_trap_push (GDK_WINDOW_DISPLAY (window));
|
||
|
||
if (add_filter)
|
||
{
|
||
gdk_window_set_events (window,
|
||
gdk_window_get_events (window) |
|
||
GDK_PROPERTY_CHANGE_MASK);
|
||
gdk_window_add_filter (window, xdnd_source_window_filter, context);
|
||
}
|
||
else
|
||
{
|
||
gdk_window_remove_filter (window,
|
||
xdnd_source_window_filter,
|
||
context);
|
||
/* Should we remove the GDK_PROPERTY_NOTIFY mask?
|
||
* but we might want it for other reasons. (Like
|
||
* INCR selection transactions).
|
||
*/
|
||
}
|
||
|
||
gdk_x11_display_error_trap_pop_ignored (GDK_WINDOW_DISPLAY (window));
|
||
}
|
||
}
|
||
|
||
static void
|
||
base_precache_atoms (GdkDisplay *display)
|
||
{
|
||
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
if (!display_x11->base_dnd_atoms_precached)
|
||
{
|
||
static const char *const precache_atoms[] = {
|
||
"WM_STATE",
|
||
"XdndAware",
|
||
"XdndProxy"
|
||
};
|
||
|
||
_gdk_x11_precache_atoms (display,
|
||
precache_atoms, G_N_ELEMENTS (precache_atoms));
|
||
|
||
display_x11->base_dnd_atoms_precached = TRUE;
|
||
}
|
||
}
|
||
|
||
static void
|
||
xdnd_precache_atoms (GdkDisplay *display)
|
||
{
|
||
GdkX11Display *display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
if (!display_x11->xdnd_atoms_precached)
|
||
{
|
||
static const gchar *const precache_atoms[] = {
|
||
"XdndActionAsk",
|
||
"XdndActionCopy",
|
||
"XdndActionLink",
|
||
"XdndActionList",
|
||
"XdndActionMove",
|
||
"XdndActionPrivate",
|
||
"XdndDrop",
|
||
"XdndEnter",
|
||
"XdndFinished",
|
||
"XdndLeave",
|
||
"XdndPosition",
|
||
"XdndSelection",
|
||
"XdndStatus",
|
||
"XdndTypeList"
|
||
};
|
||
|
||
_gdk_x11_precache_atoms (display,
|
||
precache_atoms, G_N_ELEMENTS (precache_atoms));
|
||
|
||
display_x11->xdnd_atoms_precached = TRUE;
|
||
}
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
xdnd_enter_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer cb_data)
|
||
{
|
||
GdkDeviceManager *device_manager;
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
XEvent *xevent = (XEvent *)xev;
|
||
GdkDragContext *context;
|
||
GdkX11DragContext *context_x11;
|
||
gint i;
|
||
Atom type;
|
||
int format;
|
||
gulong nitems, after;
|
||
guchar *data;
|
||
Atom *atoms;
|
||
guint32 source_window;
|
||
gboolean get_types;
|
||
gint version;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
source_window = xevent->xclient.data.l[0];
|
||
get_types = ((xevent->xclient.data.l[1] & 1) != 0);
|
||
version = (xevent->xclient.data.l[1] & 0xff000000) >> 24;
|
||
|
||
display = GDK_WINDOW_DISPLAY (event->any.window);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
xdnd_precache_atoms (display);
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndEnter: source_window: %#x, version: %#x",
|
||
source_window, version));
|
||
|
||
if (version < 3)
|
||
{
|
||
/* Old source ignore */
|
||
GDK_NOTE (DND, g_message ("Ignored old XdndEnter message"));
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
if (display_x11->current_dest_drag != NULL)
|
||
{
|
||
g_object_unref (display_x11->current_dest_drag);
|
||
display_x11->current_dest_drag = NULL;
|
||
}
|
||
|
||
context_x11 = (GdkX11DragContext *)g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL);
|
||
context = (GdkDragContext *)context_x11;
|
||
|
||
context->protocol = GDK_DRAG_PROTO_XDND;
|
||
context_x11->version = version;
|
||
|
||
/* FIXME: Should extend DnD protocol to have device info */
|
||
device_manager = gdk_display_get_device_manager (display);
|
||
gdk_drag_context_set_device (context, gdk_device_manager_get_client_pointer (device_manager));
|
||
|
||
context->source_window = gdk_x11_window_foreign_new_for_display (display, source_window);
|
||
if (!context->source_window)
|
||
{
|
||
g_object_unref (context);
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
context->dest_window = event->any.window;
|
||
g_object_ref (context->dest_window);
|
||
|
||
context->targets = NULL;
|
||
if (get_types)
|
||
{
|
||
gdk_x11_display_error_trap_push (display);
|
||
XGetWindowProperty (GDK_WINDOW_XDISPLAY (event->any.window),
|
||
source_window,
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndTypeList"),
|
||
0, 65536,
|
||
False, XA_ATOM, &type, &format, &nitems,
|
||
&after, &data);
|
||
|
||
if (gdk_x11_display_error_trap_pop (display) || (format != 32) || (type != XA_ATOM))
|
||
{
|
||
g_object_unref (context);
|
||
|
||
if (data)
|
||
XFree (data);
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
atoms = (Atom *)data;
|
||
|
||
for (i = 0; i < nitems; i++)
|
||
context->targets =
|
||
g_list_append (context->targets,
|
||
GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display,
|
||
atoms[i])));
|
||
|
||
XFree (atoms);
|
||
}
|
||
else
|
||
{
|
||
for (i = 0; i < 3; i++)
|
||
if (xevent->xclient.data.l[2 + i])
|
||
context->targets =
|
||
g_list_append (context->targets,
|
||
GDK_ATOM_TO_POINTER (gdk_x11_xatom_to_atom_for_display (display,
|
||
xevent->xclient.data.l[2 + i])));
|
||
}
|
||
|
||
#ifdef G_ENABLE_DEBUG
|
||
if (_gdk_debug_flags & GDK_DEBUG_DND)
|
||
print_target_list (context->targets);
|
||
#endif /* G_ENABLE_DEBUG */
|
||
|
||
xdnd_manage_source_filter (context, context->source_window, TRUE);
|
||
xdnd_read_actions (context_x11);
|
||
|
||
event->dnd.type = GDK_DRAG_ENTER;
|
||
event->dnd.context = context;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (context));
|
||
g_object_ref (context);
|
||
|
||
display_x11->current_dest_drag = context;
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
xdnd_leave_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
XEvent *xevent = (XEvent *)xev;
|
||
guint32 source_window = xevent->xclient.data.l[0];
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndLeave: source_window: %#x",
|
||
source_window));
|
||
|
||
display = GDK_WINDOW_DISPLAY (event->any.window);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
xdnd_precache_atoms (display);
|
||
|
||
if ((display_x11->current_dest_drag != NULL) &&
|
||
(display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_XDND) &&
|
||
(GDK_WINDOW_XID (display_x11->current_dest_drag->source_window) == source_window))
|
||
{
|
||
event->dnd.type = GDK_DRAG_LEAVE;
|
||
/* Pass ownership of context to the event */
|
||
event->dnd.context = display_x11->current_dest_drag;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (event->dnd.context));
|
||
|
||
display_x11->current_dest_drag = NULL;
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
else
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
xdnd_position_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
GdkWindowImplX11 *impl;
|
||
XEvent *xevent = (XEvent *)xev;
|
||
guint32 source_window = xevent->xclient.data.l[0];
|
||
gint16 x_root = xevent->xclient.data.l[2] >> 16;
|
||
gint16 y_root = xevent->xclient.data.l[2] & 0xffff;
|
||
guint32 time = xevent->xclient.data.l[3];
|
||
Atom action = xevent->xclient.data.l[4];
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
GdkDragContext *context;
|
||
GdkX11DragContext *context_x11;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndPosition: source_window: %#x position: (%d, %d) time: %d action: %ld",
|
||
source_window, x_root, y_root, time, action));
|
||
|
||
display = GDK_WINDOW_DISPLAY (event->any.window);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
xdnd_precache_atoms (display);
|
||
|
||
context = display_x11->current_dest_drag;
|
||
|
||
if ((context != NULL) &&
|
||
(context->protocol == GDK_DRAG_PROTO_XDND) &&
|
||
(GDK_WINDOW_XID (context->source_window) == source_window))
|
||
{
|
||
impl = GDK_WINDOW_IMPL_X11 (event->any.window->impl);
|
||
|
||
context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
|
||
event->dnd.type = GDK_DRAG_MOTION;
|
||
event->dnd.context = context;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (context));
|
||
g_object_ref (context);
|
||
|
||
event->dnd.time = time;
|
||
|
||
context->suggested_action = xdnd_action_from_atom (display, action);
|
||
|
||
if (!context_x11->xdnd_have_actions)
|
||
context->actions = context->suggested_action;
|
||
|
||
event->dnd.x_root = x_root / impl->window_scale;
|
||
event->dnd.y_root = y_root / impl->window_scale;
|
||
|
||
context_x11->last_x = x_root / impl->window_scale;
|
||
context_x11->last_y = y_root / impl->window_scale;
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
static GdkFilterReturn
|
||
xdnd_drop_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
XEvent *xevent = (XEvent *)xev;
|
||
guint32 source_window = xevent->xclient.data.l[0];
|
||
guint32 time = xevent->xclient.data.l[2];
|
||
GdkDisplay *display;
|
||
GdkX11Display *display_x11;
|
||
GdkDragContext *context;
|
||
GdkX11DragContext *context_x11;
|
||
|
||
if (!event->any.window ||
|
||
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
||
return GDK_FILTER_CONTINUE; /* Not for us */
|
||
|
||
GDK_NOTE (DND,
|
||
g_message ("XdndDrop: source_window: %#x time: %d",
|
||
source_window, time));
|
||
|
||
display = GDK_WINDOW_DISPLAY (event->any.window);
|
||
display_x11 = GDK_X11_DISPLAY (display);
|
||
|
||
xdnd_precache_atoms (display);
|
||
|
||
context = display_x11->current_dest_drag;
|
||
|
||
if ((context != NULL) &&
|
||
(context->protocol == GDK_DRAG_PROTO_XDND) &&
|
||
(GDK_WINDOW_XID (context->source_window) == source_window))
|
||
{
|
||
context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
event->dnd.type = GDK_DROP_START;
|
||
|
||
event->dnd.context = context;
|
||
gdk_event_set_device (event, gdk_drag_context_get_device (context));
|
||
g_object_ref (context);
|
||
|
||
event->dnd.time = time;
|
||
event->dnd.x_root = context_x11->last_x;
|
||
event->dnd.y_root = context_x11->last_y;
|
||
|
||
gdk_x11_window_set_user_time (event->any.window, time);
|
||
|
||
return GDK_FILTER_TRANSLATE;
|
||
}
|
||
|
||
return GDK_FILTER_REMOVE;
|
||
}
|
||
|
||
GdkFilterReturn
|
||
_gdk_x11_dnd_filter (GdkXEvent *xev,
|
||
GdkEvent *event,
|
||
gpointer data)
|
||
{
|
||
XEvent *xevent = (XEvent *) xev;
|
||
GdkDisplay *display;
|
||
int i;
|
||
|
||
if (!GDK_IS_X11_WINDOW (event->any.window))
|
||
return GDK_FILTER_CONTINUE;
|
||
|
||
if (xevent->type != ClientMessage)
|
||
return GDK_FILTER_CONTINUE;
|
||
|
||
display = GDK_WINDOW_DISPLAY (event->any.window);
|
||
|
||
for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++)
|
||
{
|
||
if (xevent->xclient.message_type != gdk_x11_get_xatom_by_name_for_display (display, xdnd_filters[i].atom_name))
|
||
continue;
|
||
|
||
return xdnd_filters[i].func (xev, event, data);
|
||
}
|
||
|
||
return GDK_FILTER_CONTINUE;
|
||
}
|
||
|
||
/* Source side */
|
||
|
||
static void
|
||
gdk_drag_do_leave (GdkX11DragContext *context_x11,
|
||
guint32 time)
|
||
{
|
||
GdkDragContext *context = GDK_DRAG_CONTEXT (context_x11);
|
||
|
||
if (context->dest_window)
|
||
{
|
||
switch (context->protocol)
|
||
{
|
||
case GDK_DRAG_PROTO_XDND:
|
||
xdnd_send_leave (context_x11);
|
||
break;
|
||
case GDK_DRAG_PROTO_ROOTWIN:
|
||
case GDK_DRAG_PROTO_NONE:
|
||
default:
|
||
break;
|
||
}
|
||
|
||
g_object_unref (context->dest_window);
|
||
context->dest_window = NULL;
|
||
}
|
||
}
|
||
|
||
GdkDragContext *
|
||
_gdk_x11_window_drag_begin (GdkWindow *window,
|
||
GdkDevice *device,
|
||
GList *targets)
|
||
{
|
||
GdkDragContext *context;
|
||
|
||
context = (GdkDragContext *) g_object_new (GDK_TYPE_X11_DRAG_CONTEXT, NULL);
|
||
|
||
context->is_source = TRUE;
|
||
context->source_window = window;
|
||
g_object_ref (window);
|
||
|
||
context->targets = g_list_copy (targets);
|
||
precache_target_list (context);
|
||
|
||
context->actions = 0;
|
||
|
||
gdk_drag_context_set_device (context, device);
|
||
|
||
return context;
|
||
}
|
||
|
||
Window
|
||
_gdk_x11_display_get_drag_protocol (GdkDisplay *display,
|
||
Window xid,
|
||
GdkDragProtocol *protocol,
|
||
guint *version)
|
||
|
||
{
|
||
GdkWindow *window;
|
||
Window retval;
|
||
|
||
base_precache_atoms (display);
|
||
|
||
/* Check for a local drag */
|
||
window = gdk_x11_window_lookup_for_display (display, xid);
|
||
if (window && gdk_window_get_window_type (window) != GDK_WINDOW_FOREIGN)
|
||
{
|
||
if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL)
|
||
{
|
||
*protocol = GDK_DRAG_PROTO_XDND;
|
||
*version = 5;
|
||
xdnd_precache_atoms (display);
|
||
GDK_NOTE (DND, g_message ("Entering local Xdnd window %#x\n", (guint) xid));
|
||
return xid;
|
||
}
|
||
else if (_gdk_x11_display_is_root_window (display, xid))
|
||
{
|
||
*protocol = GDK_DRAG_PROTO_ROOTWIN;
|
||
GDK_NOTE (DND, g_message ("Entering root window\n"));
|
||
return xid;
|
||
}
|
||
}
|
||
else if ((retval = xdnd_check_dest (display, xid, version)))
|
||
{
|
||
*protocol = GDK_DRAG_PROTO_XDND;
|
||
xdnd_precache_atoms (display);
|
||
GDK_NOTE (DND, g_message ("Entering Xdnd window %#x\n", (guint) xid));
|
||
return retval;
|
||
}
|
||
else
|
||
{
|
||
/* Check if this is a root window */
|
||
gboolean rootwin = FALSE;
|
||
|
||
if (_gdk_x11_display_is_root_window (display, (Window) xid))
|
||
rootwin = TRUE;
|
||
|
||
if (rootwin)
|
||
{
|
||
GDK_NOTE (DND, g_message ("Entering root window\n"));
|
||
*protocol = GDK_DRAG_PROTO_ROOTWIN;
|
||
return xid;
|
||
}
|
||
}
|
||
|
||
*protocol = GDK_DRAG_PROTO_NONE;
|
||
|
||
return 0; /* a.k.a. None */
|
||
}
|
||
|
||
static GdkWindowCache *
|
||
drag_context_find_window_cache (GdkX11DragContext *context_x11,
|
||
GdkScreen *screen)
|
||
{
|
||
GSList *list;
|
||
GdkWindowCache *cache;
|
||
|
||
for (list = context_x11->window_caches; list; list = list->next)
|
||
{
|
||
cache = list->data;
|
||
if (cache->screen == screen)
|
||
return cache;
|
||
}
|
||
|
||
cache = gdk_window_cache_get (screen);
|
||
context_x11->window_caches = g_slist_prepend (context_x11->window_caches, cache);
|
||
|
||
return cache;
|
||
}
|
||
|
||
static GdkWindow *
|
||
gdk_x11_drag_context_find_window (GdkDragContext *context,
|
||
GdkWindow *drag_window,
|
||
GdkScreen *screen,
|
||
gint x_root,
|
||
gint y_root,
|
||
GdkDragProtocol *protocol)
|
||
{
|
||
GdkX11Screen *screen_x11 = GDK_X11_SCREEN(screen);
|
||
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
GdkWindowCache *window_cache;
|
||
GdkDisplay *display;
|
||
Window dest;
|
||
GdkWindow *dest_window;
|
||
|
||
display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
|
||
window_cache = drag_context_find_window_cache (context_x11, screen);
|
||
|
||
dest = get_client_window_at_coords (window_cache,
|
||
drag_window && GDK_WINDOW_IS_X11 (drag_window) ?
|
||
GDK_WINDOW_XID (drag_window) : None,
|
||
x_root * screen_x11->window_scale,
|
||
y_root * screen_x11->window_scale);
|
||
|
||
if (context_x11->dest_xid != dest)
|
||
{
|
||
Window recipient;
|
||
context_x11->dest_xid = dest;
|
||
|
||
/* Check if new destination accepts drags, and which protocol */
|
||
|
||
/* There is some ugliness here. We actually need to pass
|
||
* _three_ pieces of information to drag_motion - dest_window,
|
||
* protocol, and the XID of the unproxied window. The first
|
||
* two are passed explicitly, the third implicitly through
|
||
* protocol->dest_xid.
|
||
*/
|
||
recipient = _gdk_x11_display_get_drag_protocol (display,
|
||
dest,
|
||
protocol,
|
||
&context_x11->version);
|
||
|
||
if (recipient != None)
|
||
dest_window = gdk_x11_window_foreign_new_for_display (display, recipient);
|
||
else
|
||
dest_window = NULL;
|
||
}
|
||
else
|
||
{
|
||
dest_window = context->dest_window;
|
||
if (dest_window)
|
||
g_object_ref (dest_window);
|
||
*protocol = context->protocol;
|
||
}
|
||
|
||
return dest_window;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_x11_drag_context_drag_motion (GdkDragContext *context,
|
||
GdkWindow *dest_window,
|
||
GdkDragProtocol protocol,
|
||
gint x_root,
|
||
gint y_root,
|
||
GdkDragAction suggested_action,
|
||
GdkDragAction possible_actions,
|
||
guint32 time)
|
||
{
|
||
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
GdkWindowImplX11 *impl;
|
||
|
||
context_x11->old_actions = context->actions;
|
||
context->actions = possible_actions;
|
||
|
||
if (context_x11->old_actions != possible_actions)
|
||
context_x11->xdnd_actions_set = FALSE;
|
||
|
||
if (protocol == GDK_DRAG_PROTO_XDND && context_x11->version == 0)
|
||
{
|
||
/* This ugly hack is necessary since GTK+ doesn't know about
|
||
* the XDND protocol version, and in particular doesn't know
|
||
* that gdk_drag_find_window_for_screen() has the side-effect
|
||
* of setting context_x11->version, and therefore sometimes call
|
||
* gdk_drag_motion() without a prior call to
|
||
* gdk_drag_find_window_for_screen(). This happens, e.g.
|
||
* when GTK+ is proxying DND events to embedded windows.
|
||
*/
|
||
if (dest_window)
|
||
{
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window);
|
||
|
||
xdnd_check_dest (display,
|
||
GDK_WINDOW_XID (dest_window),
|
||
&context_x11->version);
|
||
}
|
||
}
|
||
|
||
/* When we have a Xdnd target, make sure our XdndActionList
|
||
* matches the current actions;
|
||
*/
|
||
if (protocol == GDK_DRAG_PROTO_XDND && !context_x11->xdnd_actions_set)
|
||
{
|
||
if (dest_window)
|
||
{
|
||
if (gdk_window_get_window_type (dest_window) == GDK_WINDOW_FOREIGN)
|
||
xdnd_set_actions (context_x11);
|
||
else if (context->dest_window == dest_window)
|
||
{
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window);
|
||
GdkDragContext *dest_context;
|
||
|
||
dest_context = gdk_drag_context_find (display, FALSE,
|
||
GDK_WINDOW_XID (context->source_window),
|
||
GDK_WINDOW_XID (dest_window));
|
||
|
||
if (dest_context)
|
||
{
|
||
dest_context->actions = context->actions;
|
||
GDK_X11_DRAG_CONTEXT (dest_context)->xdnd_have_actions = TRUE;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (context->dest_window != dest_window)
|
||
{
|
||
GdkEvent *temp_event;
|
||
|
||
/* Send a leave to the last destination */
|
||
gdk_drag_do_leave (context_x11, time);
|
||
context_x11->drag_status = GDK_DRAG_STATUS_DRAG;
|
||
|
||
/* Check if new destination accepts drags, and which protocol */
|
||
|
||
if (dest_window)
|
||
{
|
||
context->dest_window = dest_window;
|
||
context_x11->drop_xid = context_x11->dest_xid;
|
||
g_object_ref (context->dest_window);
|
||
context->protocol = protocol;
|
||
|
||
switch (protocol)
|
||
{
|
||
case GDK_DRAG_PROTO_XDND:
|
||
xdnd_send_enter (context_x11);
|
||
break;
|
||
|
||
case GDK_DRAG_PROTO_ROOTWIN:
|
||
case GDK_DRAG_PROTO_NONE:
|
||
default:
|
||
break;
|
||
}
|
||
context_x11->old_action = suggested_action;
|
||
context->suggested_action = suggested_action;
|
||
context_x11->old_actions = possible_actions;
|
||
}
|
||
else
|
||
{
|
||
context->dest_window = NULL;
|
||
context_x11->drop_xid = None;
|
||
context->action = 0;
|
||
}
|
||
|
||
/* Push a status event, to let the client know that
|
||
* the drag changed
|
||
*/
|
||
temp_event = gdk_event_new (GDK_DRAG_STATUS);
|
||
temp_event->dnd.window = g_object_ref (context->source_window);
|
||
/* We use this to signal a synthetic status. Perhaps
|
||
* we should use an extra field...
|
||
*/
|
||
temp_event->dnd.send_event = TRUE;
|
||
|
||
temp_event->dnd.context = g_object_ref (context);
|
||
temp_event->dnd.time = time;
|
||
gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
|
||
|
||
gdk_event_put (temp_event);
|
||
gdk_event_free (temp_event);
|
||
}
|
||
else
|
||
{
|
||
context_x11->old_action = context->suggested_action;
|
||
context->suggested_action = suggested_action;
|
||
}
|
||
|
||
/* Send a drag-motion event */
|
||
|
||
context_x11->last_x = x_root;
|
||
context_x11->last_y = y_root;
|
||
|
||
if (context->dest_window)
|
||
{
|
||
impl = GDK_WINDOW_IMPL_X11 (context->dest_window->impl);
|
||
|
||
if (context_x11->drag_status == GDK_DRAG_STATUS_DRAG)
|
||
{
|
||
switch (context->protocol)
|
||
{
|
||
case GDK_DRAG_PROTO_XDND:
|
||
xdnd_send_motion (context_x11, x_root * impl->window_scale, y_root * impl->window_scale, suggested_action, time);
|
||
break;
|
||
|
||
case GDK_DRAG_PROTO_ROOTWIN:
|
||
{
|
||
GdkEvent *temp_event;
|
||
/* GTK+ traditionally has used application/x-rootwin-drop,
|
||
* but the XDND spec specifies x-rootwindow-drop.
|
||
*/
|
||
GdkAtom target1 = gdk_atom_intern_static_string ("application/x-rootwindow-drop");
|
||
GdkAtom target2 = gdk_atom_intern_static_string ("application/x-rootwin-drop");
|
||
|
||
if (g_list_find (context->targets,
|
||
GDK_ATOM_TO_POINTER (target1)) ||
|
||
g_list_find (context->targets,
|
||
GDK_ATOM_TO_POINTER (target2)))
|
||
context->action = context->suggested_action;
|
||
else
|
||
context->action = 0;
|
||
|
||
temp_event = gdk_event_new (GDK_DRAG_STATUS);
|
||
temp_event->dnd.window = g_object_ref (context->source_window);
|
||
temp_event->dnd.send_event = FALSE;
|
||
temp_event->dnd.context = g_object_ref (context);
|
||
temp_event->dnd.time = time;
|
||
gdk_event_set_device (temp_event, gdk_drag_context_get_device (context));
|
||
|
||
gdk_event_put (temp_event);
|
||
gdk_event_free (temp_event);
|
||
}
|
||
break;
|
||
case GDK_DRAG_PROTO_NONE:
|
||
g_warning ("GDK_DRAG_PROTO_NONE is not valid in gdk_drag_motion()");
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
return TRUE;
|
||
}
|
||
|
||
return FALSE;
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drag_context_drag_abort (GdkDragContext *context,
|
||
guint32 time)
|
||
{
|
||
gdk_drag_do_leave (GDK_X11_DRAG_CONTEXT (context), time);
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drag_context_drag_drop (GdkDragContext *context,
|
||
guint32 time)
|
||
{
|
||
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
|
||
if (context->dest_window)
|
||
{
|
||
switch (context->protocol)
|
||
{
|
||
case GDK_DRAG_PROTO_XDND:
|
||
xdnd_send_drop (context_x11, time);
|
||
break;
|
||
|
||
case GDK_DRAG_PROTO_ROOTWIN:
|
||
g_warning ("Drops for GDK_DRAG_PROTO_ROOTWIN must be handled internally");
|
||
break;
|
||
case GDK_DRAG_PROTO_NONE:
|
||
g_warning ("GDK_DRAG_PROTO_NONE is not valid in gdk_drag_drop()");
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Destination side */
|
||
|
||
static void
|
||
gdk_x11_drag_context_drag_status (GdkDragContext *context,
|
||
GdkDragAction action,
|
||
guint32 time_)
|
||
{
|
||
GdkX11DragContext *context_x11 = GDK_X11_DRAG_CONTEXT (context);
|
||
XEvent xev;
|
||
GdkDisplay *display;
|
||
|
||
display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
|
||
context->action = action;
|
||
|
||
if (context->protocol == GDK_DRAG_PROTO_XDND)
|
||
{
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndStatus");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = GDK_WINDOW_XID (context->source_window);
|
||
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window);
|
||
xev.xclient.data.l[1] = (action != 0) ? (2 | 1) : 0;
|
||
xev.xclient.data.l[2] = 0;
|
||
xev.xclient.data.l[3] = 0;
|
||
xev.xclient.data.l[4] = xdnd_action_to_atom (display, action);
|
||
if (!xdnd_send_xevent (context_x11, context->source_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->source_window)));
|
||
}
|
||
}
|
||
|
||
context_x11->old_action = action;
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drag_context_drop_reply (GdkDragContext *context,
|
||
gboolean accepted,
|
||
guint32 time_)
|
||
{
|
||
}
|
||
|
||
static void
|
||
gdk_x11_drag_context_drop_finish (GdkDragContext *context,
|
||
gboolean success,
|
||
guint32 time)
|
||
{
|
||
if (context->protocol == GDK_DRAG_PROTO_XDND)
|
||
{
|
||
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
||
XEvent xev;
|
||
|
||
xev.xclient.type = ClientMessage;
|
||
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "XdndFinished");
|
||
xev.xclient.format = 32;
|
||
xev.xclient.window = GDK_WINDOW_XID (context->source_window);
|
||
|
||
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->dest_window);
|
||
if (success)
|
||
{
|
||
xev.xclient.data.l[1] = 1;
|
||
xev.xclient.data.l[2] = xdnd_action_to_atom (display,
|
||
context->action);
|
||
}
|
||
else
|
||
{
|
||
xev.xclient.data.l[1] = 0;
|
||
xev.xclient.data.l[2] = None;
|
||
}
|
||
xev.xclient.data.l[3] = 0;
|
||
xev.xclient.data.l[4] = 0;
|
||
|
||
if (!xdnd_send_xevent (GDK_X11_DRAG_CONTEXT (context), context->source_window, FALSE, &xev))
|
||
{
|
||
GDK_NOTE (DND,
|
||
g_message ("Send event to %lx failed",
|
||
GDK_WINDOW_XID (context->source_window)));
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
_gdk_x11_window_register_dnd (GdkWindow *window)
|
||
{
|
||
static const gulong xdnd_version = 5;
|
||
GdkDisplay *display = gdk_window_get_display (window);
|
||
|
||
g_return_if_fail (window != NULL);
|
||
|
||
if (gdk_window_get_window_type (window) == GDK_WINDOW_OFFSCREEN)
|
||
return;
|
||
|
||
base_precache_atoms (display);
|
||
|
||
if (g_object_get_data (G_OBJECT (window), "gdk-dnd-registered") != NULL)
|
||
return;
|
||
else
|
||
g_object_set_data (G_OBJECT (window), "gdk-dnd-registered", GINT_TO_POINTER (TRUE));
|
||
|
||
/* Set XdndAware */
|
||
|
||
/* The property needs to be of type XA_ATOM, not XA_INTEGER. Blech */
|
||
XChangeProperty (GDK_DISPLAY_XDISPLAY (display),
|
||
GDK_WINDOW_XID (window),
|
||
gdk_x11_get_xatom_by_name_for_display (display, "XdndAware"),
|
||
XA_ATOM, 32, PropModeReplace,
|
||
(guchar *)&xdnd_version, 1);
|
||
}
|
||
|
||
static GdkAtom
|
||
gdk_x11_drag_context_get_selection (GdkDragContext *context)
|
||
{
|
||
if (context->protocol == GDK_DRAG_PROTO_XDND)
|
||
return gdk_atom_intern_static_string ("XdndSelection");
|
||
else
|
||
return GDK_NONE;
|
||
}
|
||
|
||
static gboolean
|
||
gdk_x11_drag_context_drop_status (GdkDragContext *context)
|
||
{
|
||
return ! GDK_X11_DRAG_CONTEXT (context)->drop_failed;
|
||
}
|