forked from AuroraMiddleware/gtk
4036 lines
110 KiB
C
4036 lines
110 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
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* 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
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* 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, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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 "gdkdnd.h"
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#include "gdkmain.h"
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#include "gdkx.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 "gdkinternals.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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#include <X11/extensions/Xcomposite.h>
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#include <string.h>
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typedef struct _GdkDragContextPrivateX11 GdkDragContextPrivateX11;
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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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} GdkWindowCache;
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/* Structure that holds information about a drag in progress.
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* this is used on both source and destination sides.
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*/
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struct _GdkDragContextPrivateX11 {
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GdkDragContext context;
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Atom motif_selection;
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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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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 motif_targets_set : 1; /* Whether we've already set motif initiator info */
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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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guint version; /* Xdnd protocol version */
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GSList *window_caches;
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GdkDevice *device;
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};
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#define PRIVATE_DATA(context) ((GdkDragContextPrivateX11 *) GDK_DRAG_CONTEXT (context)->windowing_data)
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/* Forward declarations */
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static void gdk_window_cache_destroy (GdkWindowCache *cache);
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static void motif_read_target_table (GdkDisplay *display);
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static GdkFilterReturn motif_dnd_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data);
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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 void gdk_drag_context_finalize (GObject *object);
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static GList *contexts;
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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 (GdkDragContext, gdk_drag_context, G_TYPE_OBJECT)
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static void
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gdk_drag_context_init (GdkDragContext *dragcontext)
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{
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GdkDragContextPrivateX11 *private;
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private = G_TYPE_INSTANCE_GET_PRIVATE (dragcontext,
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GDK_TYPE_DRAG_CONTEXT,
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GdkDragContextPrivateX11);
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dragcontext->windowing_data = private;
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contexts = g_list_prepend (contexts, dragcontext);
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}
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static void
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gdk_drag_context_class_init (GdkDragContextClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = gdk_drag_context_finalize;
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g_type_class_add_private (object_class, sizeof (GdkDragContextPrivateX11));
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}
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static void
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gdk_drag_context_finalize (GObject *object)
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{
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GdkDragContext *context = GDK_DRAG_CONTEXT (object);
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GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
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GSList *tmp_list;
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g_list_free (context->targets);
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if (context->source_window)
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{
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if ((context->protocol == GDK_DRAG_PROTO_XDND) &&
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!context->is_source)
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xdnd_manage_source_filter (context, context->source_window, FALSE);
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g_object_unref (context->source_window);
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}
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if (context->dest_window)
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g_object_unref (context->dest_window);
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for (tmp_list = private->window_caches; tmp_list; tmp_list = tmp_list->next)
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gdk_window_cache_destroy (tmp_list->data);
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g_slist_free (private->window_caches);
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contexts = g_list_remove (contexts, context);
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G_OBJECT_CLASS (gdk_drag_context_parent_class)->finalize (object);
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}
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/* Drag Contexts */
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/**
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* gdk_drag_context_new:
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*
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* Creates a new #GdkDragContext.
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*
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* Return value: the newly created #GdkDragContext.
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**/
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GdkDragContext *
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gdk_drag_context_new (void)
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{
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return g_object_new (GDK_TYPE_DRAG_CONTEXT, NULL);
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}
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/**
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* gdk_drag_context_set_device:
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* @context: a #GdkDragContext
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* @device: a #GdkDevice
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*
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* Associates a #GdkDevice to @context, so all Drag and Drop events
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* for @context are emitted as if they came from this device.
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**/
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void
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gdk_drag_context_set_device (GdkDragContext *context,
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GdkDevice *device)
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{
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GdkDragContextPrivateX11 *private;
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g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
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g_return_if_fail (GDK_IS_DEVICE (device));
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private = PRIVATE_DATA (context);
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if (private->device)
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{
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g_object_unref (private->device);
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private->device = NULL;
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}
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if (device)
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private->device = g_object_ref (device);
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}
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/**
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* gdk_drag_context_get_device:
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* @context: a #GdkDragContext
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*
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* Returns the #GdkDevice associated to the drag context.
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*
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* Returns: (transfer none): The #GdkDevice associated to @context.
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**/
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GdkDevice *
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gdk_drag_context_get_device (GdkDragContext *context)
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{
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GdkDragContextPrivateX11 *private;
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g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
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private = PRIVATE_DATA (context);
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return private->device;
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}
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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 = contexts;
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GdkDragContext *context;
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GdkDragContextPrivateX11 *private;
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Window context_dest_xid;
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while (tmp_list)
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{
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context = (GdkDragContext *)tmp_list->data;
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private = PRIVATE_DATA (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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(private->drop_xid ?
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private->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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tmp_list = tmp_list->next;
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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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GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (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, gint y, gint width, 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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}
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static GdkFilterReturn
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gdk_window_cache_shape_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data)
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{
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XEvent *xevent = (XEvent *)xev;
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GdkWindowCache *cache = data;
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GdkDisplayX11 *display = GDK_DISPLAY_X11 (gdk_screen_get_display (cache->screen));
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if (display->have_shapes &&
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xevent->type == display->shape_event_base + ShapeNotify)
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{
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XShapeEvent *xse = (XShapeEvent*)xevent;
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GList *node;
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node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xse->window));
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if (node)
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{
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GdkCacheChild *child = node->data;
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child->shape_valid = FALSE;
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if (child->shape)
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{
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cairo_region_destroy (child->shape);
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child->shape = NULL;
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}
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}
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return GDK_FILTER_REMOVE;
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}
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return GDK_FILTER_CONTINUE;
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}
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static GdkFilterReturn
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gdk_window_cache_filter (GdkXEvent *xev,
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GdkEvent *event,
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gpointer data)
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{
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XEvent *xevent = (XEvent *)xev;
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GdkWindowCache *cache = data;
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switch (xevent->type)
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{
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case CirculateNotify:
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break;
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case ConfigureNotify:
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{
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XConfigureEvent *xce = &xevent->xconfigure;
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GList *node;
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node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xce->window));
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if (node)
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{
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GdkCacheChild *child = node->data;
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child->x = xce->x;
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child->y = xce->y;
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child->width = xce->width;
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child->height = xce->height;
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if (xce->above == None && (node->next))
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{
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GList *last = g_list_last (cache->children);
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cache->children = g_list_remove_link (cache->children, node);
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last->next = node;
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node->next = NULL;
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node->prev = last;
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}
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else
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{
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GList *above_node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xce->above));
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if (above_node && node->next != above_node)
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{
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/* Put the window above (before in the list) above_node
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*/
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cache->children = g_list_remove_link (cache->children, node);
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node->prev = above_node->prev;
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if (node->prev)
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node->prev->next = node;
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else
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cache->children = node;
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node->next = above_node;
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above_node->prev = node;
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}
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}
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}
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break;
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}
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case CreateNotify:
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{
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XCreateWindowEvent *xcwe = &xevent->xcreatewindow;
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if (!g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xcwe->window)))
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gdk_window_cache_add (cache, xcwe->window,
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xcwe->x, xcwe->y, xcwe->width, xcwe->height,
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FALSE);
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break;
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}
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case DestroyNotify:
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{
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XDestroyWindowEvent *xdwe = &xevent->xdestroywindow;
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GList *node;
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node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xdwe->window));
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if (node)
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{
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GdkCacheChild *child = node->data;
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g_hash_table_remove (cache->child_hash,
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GUINT_TO_POINTER (xdwe->window));
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cache->children = g_list_remove_link (cache->children, node);
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/* window is destroyed, no need to disable ShapeNotify */
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free_cache_child (child, NULL);
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g_list_free_1 (node);
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}
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break;
|
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}
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case MapNotify:
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{
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XMapEvent *xme = &xevent->xmap;
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GList *node;
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node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xme->window));
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if (node)
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{
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GdkCacheChild *child = node->data;
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child->mapped = TRUE;
|
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}
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break;
|
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}
|
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case ReparentNotify:
|
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break;
|
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case UnmapNotify:
|
|
{
|
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XMapEvent *xume = &xevent->xmap;
|
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GList *node;
|
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node = g_hash_table_lookup (cache->child_hash,
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GUINT_TO_POINTER (xume->window));
|
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if (node)
|
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{
|
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GdkCacheChild *child = node->data;
|
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child->mapped = FALSE;
|
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}
|
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break;
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}
|
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default:
|
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return GDK_FILTER_CONTINUE;
|
|
}
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
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|
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static GdkWindowCache *
|
|
gdk_window_cache_new (GdkScreen *screen)
|
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{
|
|
XWindowAttributes xwa;
|
|
Display *xdisplay = GDK_SCREEN_XDISPLAY (screen);
|
|
GdkWindow *root_window = gdk_screen_get_root_window (screen);
|
|
GdkChildInfoX11 *children;
|
|
guint nchildren, i;
|
|
Window cow;
|
|
|
|
GdkWindowCache *result = g_new (GdkWindowCache, 1);
|
|
|
|
result->children = NULL;
|
|
result->child_hash = g_hash_table_new (g_direct_hash, NULL);
|
|
result->screen = screen;
|
|
|
|
XGetWindowAttributes (xdisplay, GDK_WINDOW_XID (root_window), &xwa);
|
|
result->old_event_mask = xwa.your_event_mask;
|
|
|
|
if (G_UNLIKELY (!GDK_DISPLAY_X11 (GDK_SCREEN_X11 (screen)->display)->trusted_client))
|
|
{
|
|
GList *toplevel_windows, *list;
|
|
GdkWindow *window;
|
|
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);
|
|
gdk_window_get_geometry (window, &x, &y, &width, &height);
|
|
gdk_window_cache_add (result, GDK_WINDOW_XID (window),
|
|
x, y, width, height,
|
|
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_screen_get_height (screen), 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);
|
|
|
|
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);
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
g_list_foreach (cache->children, (GFunc)free_cache_child,
|
|
gdk_screen_get_display (cache->screen));
|
|
|
|
gdk_error_trap_pop_ignored ();
|
|
|
|
g_list_free (cache->children);
|
|
g_hash_table_destroy (cache->child_hash);
|
|
|
|
g_free (cache);
|
|
}
|
|
|
|
static gboolean
|
|
is_pointer_within_shape (GdkDisplay *display,
|
|
GdkCacheChild *child,
|
|
gint x_pos,
|
|
gint y_pos)
|
|
{
|
|
if (!child->shape_selected)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
XShapeSelectInput (display_x11->xdisplay, child->xid, ShapeNotifyMask);
|
|
child->shape_selected = TRUE;
|
|
}
|
|
if (!child->shape_valid)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
cairo_region_t *input_shape;
|
|
|
|
child->shape = _xwindow_get_shape (display_x11->xdisplay,
|
|
child->xid, ShapeBounding);
|
|
#ifdef ShapeInput
|
|
input_shape = _xwindow_get_shape (display_x11->xdisplay,
|
|
child->xid, 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;
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
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))
|
|
{
|
|
GdkDisplay *display = gdk_screen_get_display (cache->screen);
|
|
|
|
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_error_trap_pop_ignored ();
|
|
|
|
if (retval)
|
|
return retval;
|
|
else
|
|
return GDK_WINDOW_XID (gdk_screen_get_root_window (cache->screen));
|
|
}
|
|
|
|
/*************************************************************
|
|
***************************** MOTIF *************************
|
|
*************************************************************/
|
|
|
|
/* values used in the message type for Motif DND */
|
|
enum {
|
|
XmTOP_LEVEL_ENTER,
|
|
XmTOP_LEVEL_LEAVE,
|
|
XmDRAG_MOTION,
|
|
XmDROP_SITE_ENTER,
|
|
XmDROP_SITE_LEAVE,
|
|
XmDROP_START,
|
|
XmDROP_FINISH,
|
|
XmDRAG_DROP_FINISH,
|
|
XmOPERATION_CHANGED
|
|
};
|
|
|
|
/* Values used to specify type of protocol to use */
|
|
enum {
|
|
XmDRAG_NONE,
|
|
XmDRAG_DROP_ONLY,
|
|
XmDRAG_PREFER_PREREGISTER,
|
|
XmDRAG_PREREGISTER,
|
|
XmDRAG_PREFER_DYNAMIC,
|
|
XmDRAG_DYNAMIC,
|
|
XmDRAG_PREFER_RECEIVER
|
|
};
|
|
|
|
/* Operation codes */
|
|
enum {
|
|
XmDROP_NOOP,
|
|
XmDROP_MOVE = 0x01,
|
|
XmDROP_COPY = 0x02,
|
|
XmDROP_LINK = 0x04
|
|
};
|
|
|
|
/* Drop site status */
|
|
enum {
|
|
XmNO_DROP_SITE = 0x01,
|
|
XmDROP_SITE_INVALID = 0x02,
|
|
XmDROP_SITE_VALID = 0x03
|
|
};
|
|
|
|
/* completion status */
|
|
enum {
|
|
XmDROP,
|
|
XmDROP_HELP,
|
|
XmDROP_CANCEL,
|
|
XmDROP_INTERRUPT
|
|
};
|
|
|
|
/* Byte swapping routines. The motif specification leaves it
|
|
* up to us to save a few bytes in the client messages
|
|
*/
|
|
static gchar local_byte_order = '\0';
|
|
|
|
#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 */
|
|
|
|
static void
|
|
init_byte_order (void)
|
|
{
|
|
guint32 myint = 0x01020304;
|
|
local_byte_order = (*(gchar *)&myint == 1) ? 'B' : 'l';
|
|
}
|
|
|
|
static guint16
|
|
card16_to_host (guint16 x, gchar byte_order) {
|
|
if (byte_order == local_byte_order)
|
|
return x;
|
|
else
|
|
return (x << 8) | (x >> 8);
|
|
}
|
|
|
|
static guint32
|
|
card32_to_host (guint32 x, gchar byte_order) {
|
|
if (byte_order == local_byte_order)
|
|
return x;
|
|
else
|
|
return (x << 24) | ((x & 0xff00) << 8) | ((x & 0xff0000) >> 8) | (x >> 24);
|
|
}
|
|
|
|
/* Motif packs together fields of varying length into the
|
|
* client message. We can't rely on accessing these
|
|
* through data.s[], data.l[], etc, because on some architectures
|
|
* (i.e., Alpha) these won't be valid for format == 8.
|
|
*/
|
|
|
|
#define MOTIF_XCLIENT_BYTE(xevent,i) \
|
|
(xevent)->xclient.data.b[i]
|
|
#define MOTIF_XCLIENT_SHORT(xevent,i) \
|
|
((gint16 *)&((xevent)->xclient.data.b[0]))[i]
|
|
#define MOTIF_XCLIENT_LONG(xevent,i) \
|
|
((gint32 *)&((xevent)->xclient.data.b[0]))[i]
|
|
|
|
#define MOTIF_UNPACK_BYTE(xevent,i) MOTIF_XCLIENT_BYTE(xevent,i)
|
|
#define MOTIF_UNPACK_SHORT(xevent,i) \
|
|
card16_to_host (MOTIF_XCLIENT_SHORT(xevent,i), MOTIF_XCLIENT_BYTE(xevent, 1))
|
|
#define MOTIF_UNPACK_LONG(xevent,i) \
|
|
card32_to_host (MOTIF_XCLIENT_LONG(xevent,i), MOTIF_XCLIENT_BYTE(xevent, 1))
|
|
|
|
/***** Dest side ***********/
|
|
|
|
/* Property placed on source windows */
|
|
typedef struct _MotifDragInitiatorInfo {
|
|
guint8 byte_order;
|
|
guint8 protocol_version;
|
|
guint16 targets_index;
|
|
guint32 selection_atom;
|
|
} MotifDragInitiatorInfo;
|
|
|
|
/* Header for target table on the drag window */
|
|
typedef struct _MotifTargetTableHeader {
|
|
guchar byte_order;
|
|
guchar protocol_version;
|
|
guint16 n_lists;
|
|
guint32 total_size;
|
|
} MotifTargetTableHeader;
|
|
|
|
/* Property placed on target windows */
|
|
typedef struct _MotifDragReceiverInfo {
|
|
guint8 byte_order;
|
|
guint8 protocol_version;
|
|
guint8 protocol_style;
|
|
guint8 pad;
|
|
guint32 proxy_window;
|
|
guint16 num_drop_sites;
|
|
guint16 padding;
|
|
guint32 total_size;
|
|
} MotifDragReceiverInfo;
|
|
|
|
/* Target table handling */
|
|
|
|
static GdkFilterReturn
|
|
motif_drag_window_filter (GdkXEvent *xevent,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
XEvent *xev = (XEvent *)xevent;
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (event->any.window);
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
switch (xev->xany.type)
|
|
{
|
|
case DestroyNotify:
|
|
display_x11->motif_drag_window = None;
|
|
display_x11->motif_drag_gdk_window = NULL;
|
|
break;
|
|
case PropertyNotify:
|
|
if (display_x11->motif_target_lists &&
|
|
(xev->xproperty.atom == gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_TARGETS")))
|
|
motif_read_target_table (display);
|
|
break;
|
|
}
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
static Window
|
|
motif_lookup_drag_window (GdkDisplay *display,
|
|
Display *lookup_xdisplay)
|
|
{
|
|
Window retval = None;
|
|
gulong bytes_after, nitems;
|
|
Atom type;
|
|
gint format;
|
|
guchar *data;
|
|
|
|
XGetWindowProperty (lookup_xdisplay, RootWindow (lookup_xdisplay, 0),
|
|
gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_WINDOW"),
|
|
0, 1, FALSE,
|
|
XA_WINDOW, &type, &format, &nitems, &bytes_after,
|
|
&data);
|
|
|
|
if ((format == 32) && (nitems == 1) && (bytes_after == 0))
|
|
{
|
|
retval = *(Window *)data;
|
|
GDK_NOTE (DND,
|
|
g_message ("Found drag window %#lx\n", GDK_DISPLAY_X11 (display)->motif_drag_window));
|
|
}
|
|
|
|
if (type != None)
|
|
XFree (data);
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* Finds the window where global Motif drag information is stored.
|
|
* If it doesn't exist and 'create' is TRUE, create one.
|
|
*/
|
|
static Window
|
|
motif_find_drag_window (GdkDisplay *display,
|
|
gboolean create)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
if (!display_x11->motif_drag_window)
|
|
{
|
|
Atom motif_drag_window_atom = gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_WINDOW");
|
|
display_x11->motif_drag_window = motif_lookup_drag_window (display, display_x11->xdisplay);
|
|
|
|
if (!display_x11->motif_drag_window && create)
|
|
{
|
|
/* Create a persistant window. (Copied from LessTif) */
|
|
|
|
Display *persistant_xdisplay;
|
|
XSetWindowAttributes attr;
|
|
persistant_xdisplay = XOpenDisplay (gdk_display_get_name (display));
|
|
XSetCloseDownMode (persistant_xdisplay, RetainPermanent);
|
|
|
|
XGrabServer (persistant_xdisplay);
|
|
|
|
display_x11->motif_drag_window = motif_lookup_drag_window (display, persistant_xdisplay);
|
|
|
|
if (!display_x11->motif_drag_window)
|
|
{
|
|
attr.override_redirect = True;
|
|
attr.event_mask = PropertyChangeMask;
|
|
|
|
display_x11->motif_drag_window =
|
|
XCreateWindow (persistant_xdisplay,
|
|
RootWindow (persistant_xdisplay, 0),
|
|
-100, -100, 10, 10, 0, 0,
|
|
InputOnly, (Visual *)CopyFromParent,
|
|
(CWOverrideRedirect | CWEventMask), &attr);
|
|
|
|
GDK_NOTE (DND,
|
|
g_message ("Created drag window %#lx\n", display_x11->motif_drag_window));
|
|
|
|
XChangeProperty (persistant_xdisplay,
|
|
RootWindow (persistant_xdisplay, 0),
|
|
motif_drag_window_atom, XA_WINDOW,
|
|
32, PropModeReplace,
|
|
(guchar *)&motif_drag_window_atom, 1);
|
|
|
|
}
|
|
XUngrabServer (persistant_xdisplay);
|
|
XCloseDisplay (persistant_xdisplay);
|
|
}
|
|
|
|
/* There is a miniscule race condition here if the drag window
|
|
* gets destroyed exactly now.
|
|
*/
|
|
if (display_x11->motif_drag_window)
|
|
{
|
|
display_x11->motif_drag_gdk_window =
|
|
gdk_window_foreign_new_for_display (display, display_x11->motif_drag_window);
|
|
gdk_window_add_filter (display_x11->motif_drag_gdk_window,
|
|
motif_drag_window_filter,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
return display_x11->motif_drag_window;
|
|
}
|
|
|
|
static void
|
|
motif_read_target_table (GdkDisplay *display)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
gulong bytes_after, nitems;
|
|
Atom type;
|
|
gint format;
|
|
gint i, j;
|
|
|
|
Atom motif_drag_targets_atom = gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_TARGETS");
|
|
|
|
if (display_x11->motif_target_lists)
|
|
{
|
|
for (i=0; i<display_x11->motif_n_target_lists; i++)
|
|
g_list_free (display_x11->motif_target_lists[i]);
|
|
|
|
g_free (display_x11->motif_target_lists);
|
|
display_x11->motif_target_lists = NULL;
|
|
display_x11->motif_n_target_lists = 0;
|
|
}
|
|
|
|
if (motif_find_drag_window (display, FALSE))
|
|
{
|
|
guchar *data;
|
|
MotifTargetTableHeader *header = NULL;
|
|
guchar *target_bytes = NULL;
|
|
guchar *p;
|
|
gboolean success = FALSE;
|
|
|
|
gdk_error_trap_push ();
|
|
XGetWindowProperty (display_x11->xdisplay,
|
|
display_x11->motif_drag_window,
|
|
motif_drag_targets_atom,
|
|
0, (sizeof(MotifTargetTableHeader)+3)/4, FALSE,
|
|
motif_drag_targets_atom,
|
|
&type, &format, &nitems, &bytes_after,
|
|
&data);
|
|
|
|
if (gdk_error_trap_pop () || (format != 8) || (nitems < sizeof (MotifTargetTableHeader)))
|
|
goto error;
|
|
|
|
header = (MotifTargetTableHeader *)data;
|
|
|
|
header->n_lists = card16_to_host (header->n_lists, header->byte_order);
|
|
header->total_size = card32_to_host (header->total_size, header->byte_order);
|
|
|
|
gdk_error_trap_push ();
|
|
XGetWindowProperty (display_x11->xdisplay,
|
|
display_x11->motif_drag_window,
|
|
motif_drag_targets_atom,
|
|
(sizeof(MotifTargetTableHeader)+3)/4,
|
|
(header->total_size + 3)/4 - (sizeof(MotifTargetTableHeader) + 3)/4,
|
|
FALSE,
|
|
motif_drag_targets_atom, &type, &format, &nitems,
|
|
&bytes_after, &target_bytes);
|
|
|
|
if (gdk_error_trap_pop () || (format != 8) || (bytes_after != 0) ||
|
|
(nitems != header->total_size - sizeof(MotifTargetTableHeader)))
|
|
goto error;
|
|
|
|
display_x11->motif_n_target_lists = header->n_lists;
|
|
display_x11->motif_target_lists = g_new0 (GList *, display_x11->motif_n_target_lists);
|
|
|
|
p = target_bytes;
|
|
for (i=0; i<header->n_lists; i++)
|
|
{
|
|
gint n_targets;
|
|
guint32 *targets;
|
|
|
|
if (p + sizeof(guint16) - target_bytes > nitems)
|
|
goto error;
|
|
|
|
n_targets = card16_to_host (*(gushort *)p, header->byte_order);
|
|
|
|
/* We need to make a copy of the targets, since it may
|
|
* be unaligned
|
|
*/
|
|
targets = g_new (guint32, n_targets);
|
|
memcpy (targets, p + sizeof(guint16), sizeof(guint32) * n_targets);
|
|
|
|
p += sizeof(guint16) + n_targets * sizeof(guint32);
|
|
if (p - target_bytes > nitems)
|
|
goto error;
|
|
|
|
for (j=0; j<n_targets; j++)
|
|
display_x11->motif_target_lists[i] =
|
|
g_list_prepend (display_x11->motif_target_lists[i],
|
|
GUINT_TO_POINTER (card32_to_host (targets[j],
|
|
header->byte_order)));
|
|
g_free (targets);
|
|
display_x11->motif_target_lists[i] = g_list_reverse (display_x11->motif_target_lists[i]);
|
|
}
|
|
|
|
success = TRUE;
|
|
|
|
error:
|
|
if (header)
|
|
XFree (header);
|
|
|
|
if (target_bytes)
|
|
XFree (target_bytes);
|
|
|
|
if (!success)
|
|
{
|
|
if (display_x11->motif_target_lists)
|
|
{
|
|
g_free (display_x11->motif_target_lists);
|
|
display_x11->motif_target_lists = NULL;
|
|
display_x11->motif_n_target_lists = 0;
|
|
}
|
|
g_warning ("Error reading Motif target table\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static gint
|
|
targets_sort_func (gconstpointer a, gconstpointer b)
|
|
{
|
|
return (GPOINTER_TO_UINT (a) < GPOINTER_TO_UINT (b)) ?
|
|
-1 : ((GPOINTER_TO_UINT (a) > GPOINTER_TO_UINT (b)) ? 1 : 0);
|
|
}
|
|
|
|
/* Check if given (sorted) list is in the targets table */
|
|
static gint
|
|
motif_target_table_check (GdkDisplay *display,
|
|
GList *sorted)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
GList *tmp_list1, *tmp_list2;
|
|
gint i;
|
|
|
|
for (i=0; i<display_x11->motif_n_target_lists; i++)
|
|
{
|
|
tmp_list1 = display_x11->motif_target_lists[i];
|
|
tmp_list2 = sorted;
|
|
|
|
while (tmp_list1 && tmp_list2)
|
|
{
|
|
if (tmp_list1->data != tmp_list2->data)
|
|
break;
|
|
|
|
tmp_list1 = tmp_list1->next;
|
|
tmp_list2 = tmp_list2->next;
|
|
}
|
|
if (!tmp_list1 && !tmp_list2) /* Found it */
|
|
return i;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static gint
|
|
motif_add_to_target_table (GdkDisplay *display,
|
|
GList *targets) /* targets is list of GdkAtom */
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
GList *sorted = NULL;
|
|
gint index = -1;
|
|
gint i;
|
|
GList *tmp_list;
|
|
|
|
/* make a sorted copy of the list */
|
|
|
|
while (targets)
|
|
{
|
|
Atom xatom = gdk_x11_atom_to_xatom_for_display (display, GDK_POINTER_TO_ATOM (targets->data));
|
|
sorted = g_list_insert_sorted (sorted, GUINT_TO_POINTER (xatom), targets_sort_func);
|
|
targets = targets->next;
|
|
}
|
|
|
|
/* First check if it is there already */
|
|
|
|
if (display_x11->motif_target_lists)
|
|
index = motif_target_table_check (display, sorted);
|
|
|
|
/* We need to grab the server while doing this, to ensure
|
|
* atomiticity. Ugh
|
|
*/
|
|
|
|
if (index < 0)
|
|
{
|
|
/* We need to make sure that it exists _before_ we grab the
|
|
* server, since we can't open a new connection after we
|
|
* grab the server.
|
|
*/
|
|
motif_find_drag_window (display, TRUE);
|
|
|
|
gdk_x11_display_grab (display);
|
|
motif_read_target_table (display);
|
|
|
|
/* Check again, in case it was added in the meantime */
|
|
|
|
if (display_x11->motif_target_lists)
|
|
index = motif_target_table_check (display, sorted);
|
|
|
|
if (index < 0)
|
|
{
|
|
guint32 total_size = 0;
|
|
guchar *data;
|
|
guchar *p;
|
|
guint16 *p16;
|
|
MotifTargetTableHeader *header;
|
|
|
|
if (!display_x11->motif_target_lists)
|
|
{
|
|
display_x11->motif_target_lists = g_new (GList *, 1);
|
|
display_x11->motif_n_target_lists = 1;
|
|
}
|
|
else
|
|
{
|
|
display_x11->motif_n_target_lists++;
|
|
display_x11->motif_target_lists = g_realloc (display_x11->motif_target_lists,
|
|
sizeof(GList *) * display_x11->motif_n_target_lists);
|
|
}
|
|
display_x11->motif_target_lists[display_x11->motif_n_target_lists - 1] = sorted;
|
|
sorted = NULL;
|
|
index = display_x11->motif_n_target_lists - 1;
|
|
|
|
total_size = sizeof (MotifTargetTableHeader);
|
|
for (i = 0; i < display_x11->motif_n_target_lists ; i++)
|
|
total_size += sizeof(guint16) + sizeof(guint32) * g_list_length (display_x11->motif_target_lists[i]);
|
|
|
|
data = g_malloc (total_size);
|
|
|
|
header = (MotifTargetTableHeader *)data;
|
|
p = data + sizeof(MotifTargetTableHeader);
|
|
|
|
header->byte_order = local_byte_order;
|
|
header->protocol_version = 0;
|
|
header->n_lists = display_x11->motif_n_target_lists;
|
|
header->total_size = total_size;
|
|
|
|
for (i = 0; i < display_x11->motif_n_target_lists ; i++)
|
|
{
|
|
guint16 n_targets = g_list_length (display_x11->motif_target_lists[i]);
|
|
guint32 *targets = g_new (guint32, n_targets);
|
|
guint32 *p32 = targets;
|
|
|
|
tmp_list = display_x11->motif_target_lists[i];
|
|
while (tmp_list)
|
|
{
|
|
*p32 = GPOINTER_TO_UINT (tmp_list->data);
|
|
|
|
tmp_list = tmp_list->next;
|
|
p32++;
|
|
}
|
|
|
|
p16 = (guint16 *)p;
|
|
p += sizeof(guint16);
|
|
|
|
memcpy (p, targets, n_targets * sizeof(guint32));
|
|
|
|
*p16 = n_targets;
|
|
p += sizeof(guint32) * n_targets;
|
|
g_free (targets);
|
|
}
|
|
|
|
XChangeProperty (display_x11->xdisplay,
|
|
display_x11->motif_drag_window,
|
|
gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_TARGETS"),
|
|
gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_TARGETS"),
|
|
8, PropModeReplace,
|
|
data, total_size);
|
|
}
|
|
gdk_x11_display_ungrab (display);
|
|
}
|
|
|
|
g_list_free (sorted);
|
|
return index;
|
|
}
|
|
|
|
/* Translate flags */
|
|
|
|
static void
|
|
motif_dnd_translate_flags (GdkDragContext *context, guint16 flags)
|
|
{
|
|
guint recommended_op = flags & 0x000f;
|
|
guint possible_ops = (flags & 0x0f0) >> 4;
|
|
|
|
switch (recommended_op)
|
|
{
|
|
case XmDROP_MOVE:
|
|
context->suggested_action = GDK_ACTION_MOVE;
|
|
break;
|
|
case XmDROP_COPY:
|
|
context->suggested_action = GDK_ACTION_COPY;
|
|
break;
|
|
case XmDROP_LINK:
|
|
context->suggested_action = GDK_ACTION_LINK;
|
|
break;
|
|
default:
|
|
context->suggested_action = GDK_ACTION_COPY;
|
|
break;
|
|
}
|
|
|
|
context->actions = 0;
|
|
if (possible_ops & XmDROP_MOVE)
|
|
context->actions |= GDK_ACTION_MOVE;
|
|
if (possible_ops & XmDROP_COPY)
|
|
context->actions |= GDK_ACTION_COPY;
|
|
if (possible_ops & XmDROP_LINK)
|
|
context->actions |= GDK_ACTION_LINK;
|
|
}
|
|
|
|
static guint16
|
|
motif_dnd_get_flags (GdkDragContext *context)
|
|
{
|
|
guint16 flags = 0;
|
|
|
|
switch (context->suggested_action)
|
|
{
|
|
case GDK_ACTION_MOVE:
|
|
flags = XmDROP_MOVE;
|
|
break;
|
|
case GDK_ACTION_COPY:
|
|
flags = XmDROP_COPY;
|
|
break;
|
|
case GDK_ACTION_LINK:
|
|
flags = XmDROP_LINK;
|
|
break;
|
|
default:
|
|
flags = XmDROP_NOOP;
|
|
break;
|
|
}
|
|
|
|
if (context->actions & GDK_ACTION_MOVE)
|
|
flags |= XmDROP_MOVE << 8;
|
|
if (context->actions & GDK_ACTION_COPY)
|
|
flags |= XmDROP_COPY << 8;
|
|
if (context->actions & GDK_ACTION_LINK)
|
|
flags |= XmDROP_LINK << 8;
|
|
|
|
return flags;
|
|
}
|
|
|
|
/* Source Side */
|
|
|
|
static void
|
|
motif_set_targets (GdkDragContext *context)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
MotifDragInitiatorInfo info;
|
|
gint i;
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
|
|
info.byte_order = local_byte_order;
|
|
info.protocol_version = 0;
|
|
|
|
info.targets_index = motif_add_to_target_table (display, context->targets);
|
|
|
|
for (i=0; ; i++)
|
|
{
|
|
gchar buf[20];
|
|
g_snprintf(buf, 20, "_GDK_SELECTION_%d", i);
|
|
|
|
private->motif_selection = gdk_x11_get_xatom_by_name_for_display (display, buf);
|
|
if (!XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display), private->motif_selection))
|
|
break;
|
|
}
|
|
|
|
info.selection_atom = private->motif_selection;
|
|
|
|
XChangeProperty (GDK_WINDOW_XDISPLAY (context->source_window),
|
|
GDK_WINDOW_XID (context->source_window),
|
|
private->motif_selection,
|
|
gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_INITIATOR_INFO"),
|
|
8, PropModeReplace,
|
|
(guchar *)&info, sizeof (info));
|
|
|
|
private->motif_targets_set = 1;
|
|
}
|
|
|
|
static guint32
|
|
motif_check_dest (GdkDisplay *display,
|
|
Window win)
|
|
{
|
|
gboolean retval = FALSE;
|
|
guchar *data;
|
|
MotifDragReceiverInfo *info;
|
|
Atom type = None;
|
|
int format;
|
|
unsigned long nitems, after;
|
|
Atom motif_drag_receiver_info_atom = gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_RECEIVER_INFO");
|
|
|
|
gdk_error_trap_push ();
|
|
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), win,
|
|
motif_drag_receiver_info_atom,
|
|
0, (sizeof(*info)+3)/4, False, AnyPropertyType,
|
|
&type, &format, &nitems, &after,
|
|
&data);
|
|
|
|
if (gdk_error_trap_pop() == 0)
|
|
{
|
|
if (type != None)
|
|
{
|
|
info = (MotifDragReceiverInfo *)data;
|
|
|
|
if ((format == 8) && (nitems == sizeof(*info)))
|
|
{
|
|
if ((info->protocol_version == 0) &&
|
|
((info->protocol_style == XmDRAG_PREFER_PREREGISTER) ||
|
|
(info->protocol_style == XmDRAG_PREFER_DYNAMIC) ||
|
|
(info->protocol_style == XmDRAG_DYNAMIC)))
|
|
retval = TRUE;
|
|
}
|
|
else
|
|
{
|
|
GDK_NOTE (DND,
|
|
g_warning ("Invalid Motif drag receiver property on window %ld\n", win));
|
|
}
|
|
|
|
XFree (info);
|
|
}
|
|
}
|
|
|
|
return retval ? win : None;
|
|
}
|
|
|
|
static void
|
|
motif_send_enter (GdkDragContext *context,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
XEvent xev;
|
|
|
|
if (!G_LIKELY (GDK_DISPLAY_X11 (display)->trusted_client))
|
|
return; /* Motif Dnd requires getting properties on the root window */
|
|
|
|
xev.xclient.type = ClientMessage;
|
|
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
xev.xclient.window = GDK_WINDOW_XID (context->dest_window);
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmTOP_LEVEL_ENTER;
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 1) = time;
|
|
MOTIF_XCLIENT_LONG (&xev, 2) = GDK_WINDOW_XID (context->source_window);
|
|
|
|
if (!private->motif_targets_set)
|
|
motif_set_targets (context);
|
|
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = private->motif_selection;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = 0;
|
|
|
|
if (!_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->dest_window),
|
|
FALSE, 0, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->dest_window)));
|
|
}
|
|
|
|
static void
|
|
motif_send_leave (GdkDragContext *context,
|
|
guint32 time)
|
|
{
|
|
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, "_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
xev.xclient.window = GDK_WINDOW_XID (context->dest_window);
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmTOP_LEVEL_LEAVE;
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 1) = time;
|
|
MOTIF_XCLIENT_LONG (&xev, 2) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = 0;
|
|
|
|
if (!_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->dest_window),
|
|
FALSE, 0, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->dest_window)));
|
|
}
|
|
|
|
static gboolean
|
|
motif_send_motion (GdkDragContext *context,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkDragAction action,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
gboolean retval;
|
|
XEvent xev;
|
|
|
|
xev.xclient.type = ClientMessage;
|
|
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
xev.xclient.window = GDK_WINDOW_XID (context->dest_window);
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = motif_dnd_get_flags (context);
|
|
MOTIF_XCLIENT_LONG (&xev, 1) = time;
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = 0;
|
|
|
|
if ((context->suggested_action != private->old_action) ||
|
|
(context->actions != private->old_actions))
|
|
{
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmOPERATION_CHANGED;
|
|
|
|
/* private->drag_status = GDK_DRAG_STATUS_ACTION_WAIT; */
|
|
retval = TRUE;
|
|
}
|
|
else
|
|
{
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDRAG_MOTION;
|
|
|
|
MOTIF_XCLIENT_SHORT (&xev, 4) = x_root;
|
|
MOTIF_XCLIENT_SHORT (&xev, 5) = y_root;
|
|
|
|
private->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
|
|
retval = FALSE;
|
|
}
|
|
|
|
if (!_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->dest_window),
|
|
FALSE, 0, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->dest_window)));
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void
|
|
motif_send_drop (GdkDragContext *context, guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
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, "_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
xev.xclient.window = GDK_WINDOW_XID (context->dest_window);
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDROP_START;
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = motif_dnd_get_flags (context);
|
|
MOTIF_XCLIENT_LONG (&xev, 1) = time;
|
|
|
|
MOTIF_XCLIENT_SHORT (&xev, 4) = private->last_x;
|
|
MOTIF_XCLIENT_SHORT (&xev, 5) = private->last_y;
|
|
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = private->motif_selection;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = GDK_WINDOW_XID (context->source_window);
|
|
|
|
if (!_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->dest_window),
|
|
FALSE, 0, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->dest_window)));
|
|
}
|
|
|
|
/* Target Side */
|
|
|
|
static gboolean
|
|
motif_read_initiator_info (GdkDisplay *display,
|
|
Window source_window,
|
|
Atom atom,
|
|
GList **targets,
|
|
Atom *selection)
|
|
{
|
|
GList *tmp_list;
|
|
Atom type;
|
|
gint format;
|
|
gulong nitems;
|
|
gulong bytes_after;
|
|
guchar *data;
|
|
MotifDragInitiatorInfo *initiator_info;
|
|
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
gdk_error_trap_push ();
|
|
XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), source_window, atom,
|
|
0, sizeof(*initiator_info), FALSE,
|
|
gdk_x11_get_xatom_by_name_for_display (display, "_MOTIF_DRAG_INITIATOR_INFO"),
|
|
&type, &format, &nitems, &bytes_after,
|
|
&data);
|
|
|
|
if (gdk_error_trap_pop () || (format != 8) || (nitems != sizeof (MotifDragInitiatorInfo)) || (bytes_after != 0))
|
|
{
|
|
g_warning ("Error reading initiator info\n");
|
|
return FALSE;
|
|
}
|
|
|
|
initiator_info = (MotifDragInitiatorInfo *)data;
|
|
|
|
motif_read_target_table (display);
|
|
|
|
initiator_info->targets_index =
|
|
card16_to_host (initiator_info->targets_index, initiator_info->byte_order);
|
|
initiator_info->selection_atom =
|
|
card32_to_host (initiator_info->selection_atom, initiator_info->byte_order);
|
|
|
|
if (initiator_info->targets_index >= display_x11->motif_n_target_lists)
|
|
{
|
|
g_warning ("Invalid target index in TOP_LEVEL_ENTER MESSAGE");
|
|
XFree (initiator_info);
|
|
return FALSE;
|
|
}
|
|
|
|
tmp_list = g_list_last (display_x11->motif_target_lists[initiator_info->targets_index]);
|
|
|
|
*targets = NULL;
|
|
while (tmp_list)
|
|
{
|
|
GdkAtom atom = gdk_x11_xatom_to_atom_for_display (display, GPOINTER_TO_UINT (tmp_list->data));
|
|
*targets = g_list_prepend (*targets, GDK_ATOM_TO_POINTER (atom));
|
|
tmp_list = tmp_list->prev;
|
|
}
|
|
|
|
#ifdef G_ENABLE_DEBUG
|
|
if (_gdk_debug_flags & GDK_DEBUG_DND)
|
|
print_target_list (*targets);
|
|
#endif /* G_ENABLE_DEBUG */
|
|
|
|
*selection = initiator_info->selection_atom;
|
|
|
|
XFree (initiator_info);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GdkDragContext *
|
|
motif_drag_context_new (GdkWindow *dest_window,
|
|
guint32 timestamp,
|
|
guint32 source_window,
|
|
guint32 atom)
|
|
{
|
|
GdkDragContext *new_context;
|
|
GdkDragContextPrivateX11 *private;
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (dest_window);
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
/* FIXME, current_dest_drag really shouldn't be NULL'd
|
|
* if we error below.
|
|
*/
|
|
if (display_x11->current_dest_drag != NULL)
|
|
{
|
|
if (timestamp >= display_x11->current_dest_drag->start_time)
|
|
{
|
|
g_object_unref (display_x11->current_dest_drag);
|
|
display_x11->current_dest_drag = NULL;
|
|
}
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
new_context = gdk_drag_context_new ();
|
|
private = PRIVATE_DATA (new_context);
|
|
|
|
new_context->protocol = GDK_DRAG_PROTO_MOTIF;
|
|
new_context->is_source = FALSE;
|
|
|
|
new_context->source_window = gdk_window_lookup_for_display (display, source_window);
|
|
if (new_context->source_window)
|
|
g_object_ref (new_context->source_window);
|
|
else
|
|
{
|
|
new_context->source_window = gdk_window_foreign_new_for_display (display, source_window);
|
|
if (!new_context->source_window)
|
|
{
|
|
g_object_unref (new_context);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
new_context->dest_window = dest_window;
|
|
g_object_ref (dest_window);
|
|
new_context->start_time = timestamp;
|
|
|
|
if (!motif_read_initiator_info (GDK_WINDOW_DISPLAY (dest_window),
|
|
source_window,
|
|
atom,
|
|
&new_context->targets,
|
|
&private->motif_selection))
|
|
{
|
|
g_object_unref (new_context);
|
|
return NULL;
|
|
}
|
|
|
|
return new_context;
|
|
}
|
|
|
|
/*
|
|
* The MOTIF drag protocol has no real provisions for distinguishing
|
|
* multiple simultaneous drops. If the sources grab the pointer
|
|
* when doing drags, that shouldn't happen, in any case. If it
|
|
* does, we can't do much except hope for the best.
|
|
*/
|
|
|
|
static GdkFilterReturn
|
|
motif_top_level_enter (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp,
|
|
guint32 source_window,
|
|
guint32 atom)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (event->any.window));
|
|
GdkDragContext *new_context;
|
|
|
|
GDK_NOTE(DND, g_message ("Motif DND top level enter: flags: %#4x time: %d source_widow: %#4x atom: %d",
|
|
flags, timestamp, source_window, atom));
|
|
|
|
new_context = motif_drag_context_new (event->any.window, timestamp, source_window, atom);
|
|
if (!new_context)
|
|
return GDK_FILTER_REMOVE;
|
|
|
|
event->dnd.type = GDK_DRAG_ENTER;
|
|
event->dnd.context = new_context;
|
|
g_object_ref (new_context);
|
|
|
|
display_x11->current_dest_drag = new_context;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_top_level_leave (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (event->any.window));
|
|
|
|
GDK_NOTE(DND, g_message ("Motif DND top level leave: flags: %#4x time: %d",
|
|
flags, timestamp));
|
|
|
|
if ((display_x11->current_dest_drag != NULL) &&
|
|
(display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_MOTIF) &&
|
|
(timestamp >= display_x11->current_dest_drag->start_time))
|
|
{
|
|
event->dnd.type = GDK_DRAG_LEAVE;
|
|
/* Pass ownership of context to the event */
|
|
event->dnd.context = display_x11->current_dest_drag;
|
|
|
|
display_x11->current_dest_drag = NULL;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
else
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_motion (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp,
|
|
gint16 x_root,
|
|
gint16 y_root)
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (event->any.window));
|
|
|
|
GDK_NOTE(DND, g_message ("Motif DND motion: flags: %#4x time: %d (%d, %d)",
|
|
flags, timestamp, x_root, y_root));
|
|
|
|
if ((display_x11->current_dest_drag != NULL) &&
|
|
(display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_MOTIF) &&
|
|
(timestamp >= display_x11->current_dest_drag->start_time))
|
|
{
|
|
private = PRIVATE_DATA (display_x11->current_dest_drag);
|
|
|
|
event->dnd.type = GDK_DRAG_MOTION;
|
|
event->dnd.context = display_x11->current_dest_drag;
|
|
g_object_ref (display_x11->current_dest_drag);
|
|
|
|
event->dnd.time = timestamp;
|
|
|
|
motif_dnd_translate_flags (display_x11->current_dest_drag, flags);
|
|
|
|
event->dnd.x_root = x_root;
|
|
event->dnd.y_root = y_root;
|
|
|
|
private->last_x = x_root;
|
|
private->last_y = y_root;
|
|
|
|
private->drag_status = GDK_DRAG_STATUS_MOTION_WAIT;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_operation_changed (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp)
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (event->any.window));
|
|
GDK_NOTE(DND, g_message ("Motif DND operation changed: flags: %#4x time: %d",
|
|
flags, timestamp));
|
|
|
|
if ((display_x11->current_dest_drag != NULL) &&
|
|
(display_x11->current_dest_drag->protocol == GDK_DRAG_PROTO_MOTIF) &&
|
|
(timestamp >= display_x11->current_dest_drag->start_time))
|
|
{
|
|
event->dnd.type = GDK_DRAG_MOTION;
|
|
event->dnd.send_event = FALSE;
|
|
event->dnd.context = display_x11->current_dest_drag;
|
|
g_object_ref (display_x11->current_dest_drag);
|
|
|
|
event->dnd.time = timestamp;
|
|
private = PRIVATE_DATA (display_x11->current_dest_drag);
|
|
|
|
motif_dnd_translate_flags (display_x11->current_dest_drag, flags);
|
|
|
|
event->dnd.x_root = private->last_x;
|
|
event->dnd.y_root = private->last_y;
|
|
|
|
private->drag_status = GDK_DRAG_STATUS_ACTION_WAIT;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_drop_start (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp,
|
|
guint32 source_window,
|
|
guint32 atom,
|
|
gint16 x_root,
|
|
gint16 y_root)
|
|
{
|
|
GdkDragContext *new_context;
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (GDK_WINDOW_DISPLAY (event->any.window));
|
|
|
|
GDK_NOTE(DND, g_message ("Motif DND drop start: flags: %#4x time: %d (%d, %d) source_widow: %#4x atom: %d",
|
|
flags, timestamp, x_root, y_root, source_window, atom));
|
|
|
|
new_context = motif_drag_context_new (event->any.window, timestamp, source_window, atom);
|
|
if (!new_context)
|
|
return GDK_FILTER_REMOVE;
|
|
|
|
motif_dnd_translate_flags (new_context, flags);
|
|
|
|
event->dnd.type = GDK_DROP_START;
|
|
event->dnd.context = new_context;
|
|
event->dnd.time = timestamp;
|
|
event->dnd.x_root = x_root;
|
|
event->dnd.y_root = y_root;
|
|
|
|
gdk_x11_window_set_user_time (event->any.window, timestamp);
|
|
|
|
g_object_ref (new_context);
|
|
display_x11->current_dest_drag = new_context;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_drag_status (GdkEvent *event,
|
|
guint16 flags,
|
|
guint32 timestamp)
|
|
{
|
|
GdkDragContext *context;
|
|
GdkDisplay *display;
|
|
|
|
GDK_NOTE (DND,
|
|
g_message ("Motif status message: flags %x", flags));
|
|
|
|
display = gdk_window_get_display (event->any.window);
|
|
if (!display)
|
|
return GDK_FILTER_REMOVE;
|
|
|
|
context = gdk_drag_context_find (display, TRUE, GDK_WINDOW_XID (event->any.window), None);
|
|
|
|
if (context)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
if ((private->drag_status == GDK_DRAG_STATUS_MOTION_WAIT) ||
|
|
(private->drag_status == GDK_DRAG_STATUS_ACTION_WAIT))
|
|
private->drag_status = GDK_DRAG_STATUS_DRAG;
|
|
|
|
event->dnd.type = GDK_DRAG_STATUS;
|
|
event->dnd.send_event = FALSE;
|
|
event->dnd.context = context;
|
|
g_object_ref (context);
|
|
|
|
event->dnd.time = timestamp;
|
|
|
|
if ((flags & 0x00f0) >> 4 == XmDROP_SITE_VALID)
|
|
{
|
|
switch (flags & 0x000f)
|
|
{
|
|
case XmDROP_NOOP:
|
|
context->action = 0;
|
|
break;
|
|
case XmDROP_MOVE:
|
|
context->action = GDK_ACTION_MOVE;
|
|
break;
|
|
case XmDROP_COPY:
|
|
context->action = GDK_ACTION_COPY;
|
|
break;
|
|
case XmDROP_LINK:
|
|
context->action = GDK_ACTION_LINK;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
context->action = 0;
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
static GdkFilterReturn
|
|
motif_dnd_filter (GdkXEvent *xev,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
XEvent *xevent = (XEvent *)xev;
|
|
|
|
guint8 reason;
|
|
guint16 flags;
|
|
guint32 timestamp;
|
|
guint32 source_window;
|
|
Atom atom;
|
|
gint16 x_root, y_root;
|
|
gboolean is_reply;
|
|
|
|
if (!event->any.window ||
|
|
gdk_window_get_window_type (event->any.window) == GDK_WINDOW_FOREIGN)
|
|
return GDK_FILTER_CONTINUE; /* Not for us */
|
|
|
|
/* First read some fields common to all Motif DND messages */
|
|
|
|
reason = MOTIF_UNPACK_BYTE (xevent, 0);
|
|
flags = MOTIF_UNPACK_SHORT (xevent, 1);
|
|
timestamp = MOTIF_UNPACK_LONG (xevent, 1);
|
|
|
|
is_reply = ((reason & 0x80) != 0);
|
|
|
|
switch (reason & 0x7f)
|
|
{
|
|
case XmTOP_LEVEL_ENTER:
|
|
source_window = MOTIF_UNPACK_LONG (xevent, 2);
|
|
atom = MOTIF_UNPACK_LONG (xevent, 3);
|
|
return motif_top_level_enter (event, flags, timestamp, source_window, atom);
|
|
case XmTOP_LEVEL_LEAVE:
|
|
return motif_top_level_leave (event, flags, timestamp);
|
|
|
|
case XmDRAG_MOTION:
|
|
x_root = MOTIF_UNPACK_SHORT (xevent, 4);
|
|
y_root = MOTIF_UNPACK_SHORT (xevent, 5);
|
|
|
|
if (!is_reply)
|
|
return motif_motion (event, flags, timestamp, x_root, y_root);
|
|
else
|
|
return motif_drag_status (event, flags, timestamp);
|
|
|
|
case XmDROP_SITE_ENTER:
|
|
return motif_drag_status (event, flags, timestamp);
|
|
|
|
case XmDROP_SITE_LEAVE:
|
|
return motif_drag_status (event,
|
|
XmNO_DROP_SITE << 8 | XmDROP_NOOP,
|
|
timestamp);
|
|
case XmDROP_START:
|
|
x_root = MOTIF_UNPACK_SHORT (xevent, 4);
|
|
y_root = MOTIF_UNPACK_SHORT (xevent, 5);
|
|
atom = MOTIF_UNPACK_LONG (xevent, 3);
|
|
source_window = MOTIF_UNPACK_LONG (xevent, 4);
|
|
|
|
if (!is_reply)
|
|
return motif_drop_start (event, flags, timestamp, source_window, atom, x_root, y_root);
|
|
|
|
break;
|
|
case XmOPERATION_CHANGED:
|
|
if (!is_reply)
|
|
return motif_operation_changed (event, flags, timestamp);
|
|
else
|
|
return motif_drag_status (event, flags, timestamp);
|
|
|
|
break;
|
|
/* To the best of my knowledge, these next two messages are
|
|
* not part of the protocol, though they are defined in
|
|
* the header files.
|
|
*/
|
|
case XmDROP_FINISH:
|
|
case XmDRAG_DROP_FINISH:
|
|
break;
|
|
}
|
|
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
/*************************************************************
|
|
***************************** 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 = sizeof(xdnd_actions_table) / sizeof(xdnd_actions_table[0]);
|
|
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)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
if (private->drag_status == GDK_DRAG_STATUS_MOTION_WAIT)
|
|
private->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;
|
|
GdkDragContextPrivateX11 *private;
|
|
|
|
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)
|
|
{
|
|
private = PRIVATE_DATA (context);
|
|
if (private->version == 5)
|
|
private->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 (GdkDragContext *context)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
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);
|
|
|
|
private->xdnd_targets_set = 1;
|
|
}
|
|
|
|
static void
|
|
xdnd_set_actions (GdkDragContext *context)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
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);
|
|
|
|
private->xdnd_actions_set = TRUE;
|
|
private->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;
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
|
|
g_object_unref (context->dest_window);
|
|
context->dest_window = NULL;
|
|
context->action = 0;
|
|
|
|
private->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 (GdkDragContext *context,
|
|
GdkWindow *window,
|
|
gboolean propagate,
|
|
XEvent *event_send)
|
|
{
|
|
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 (GdkDragContext *context)
|
|
{
|
|
XEvent xev;
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->dest_window);
|
|
|
|
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 = private->drop_xid ?
|
|
private->drop_xid :
|
|
GDK_WINDOW_XID (context->dest_window);
|
|
xev.xclient.data.l[0] = GDK_WINDOW_XID (context->source_window);
|
|
xev.xclient.data.l[1] = (private->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), private->version));
|
|
if (g_list_length (context->targets) > 3)
|
|
{
|
|
if (!private->xdnd_targets_set)
|
|
xdnd_set_targets (context);
|
|
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, 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 (GdkDragContext *context)
|
|
{
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
XEvent xev;
|
|
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
|
|
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 = private->drop_xid ?
|
|
private->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, 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 (GdkDragContext *context, guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
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 = private->drop_xid ?
|
|
private->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, 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 (GdkDragContext *context,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkDragAction action,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
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 = private->drop_xid ?
|
|
private->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, 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;
|
|
}
|
|
private->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_error_trap_push ();
|
|
|
|
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_error_trap_pop_ignored ();
|
|
|
|
return retval ? (proxy ? proxy : win) : None;
|
|
}
|
|
|
|
/* Target side */
|
|
|
|
static void
|
|
xdnd_read_actions (GdkDragContext *context)
|
|
{
|
|
GdkDisplay *display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
Atom type;
|
|
int format;
|
|
gulong nitems, after;
|
|
guchar *data;
|
|
Atom *atoms;
|
|
|
|
gint i;
|
|
|
|
PRIVATE_DATA (context)->xdnd_have_actions = FALSE;
|
|
|
|
if (gdk_window_get_window_type (context->source_window) == GDK_WINDOW_FOREIGN)
|
|
{
|
|
/* Get the XdndActionList, if set */
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
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]);
|
|
|
|
PRIVATE_DATA (context)->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_error_trap_pop_ignored ();
|
|
}
|
|
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;
|
|
PRIVATE_DATA (context)->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;
|
|
GdkDragContext *context = 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);
|
|
|
|
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_error_trap_push ();
|
|
|
|
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_error_trap_pop_ignored ();
|
|
}
|
|
}
|
|
|
|
static void
|
|
base_precache_atoms (GdkDisplay *display)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
if (!display_x11->base_dnd_atoms_precached)
|
|
{
|
|
static const char *const precache_atoms[] = {
|
|
"ENLIGHTENMENT_DESKTOP",
|
|
"WM_STATE",
|
|
"XdndAware",
|
|
"XdndProxy",
|
|
"_MOTIF_DRAG_RECEIVER_INFO"
|
|
};
|
|
|
|
_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)
|
|
{
|
|
GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
|
|
|
|
if (!display_x11->xdnd_atoms_precached)
|
|
{
|
|
static const char *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;
|
|
GdkDisplayX11 *display_x11;
|
|
XEvent *xevent = (XEvent *)xev;
|
|
GdkDragContext *new_context;
|
|
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_DISPLAY_X11 (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;
|
|
}
|
|
|
|
new_context = gdk_drag_context_new ();
|
|
new_context->protocol = GDK_DRAG_PROTO_XDND;
|
|
PRIVATE_DATA(new_context)->version = version;
|
|
|
|
/* FIXME: Should extend DnD protocol to have device info */
|
|
device_manager = gdk_display_get_device_manager (display);
|
|
gdk_drag_context_set_device (new_context, gdk_device_manager_get_client_pointer (device_manager));
|
|
|
|
new_context->source_window = gdk_window_lookup_for_display (display, source_window);
|
|
if (new_context->source_window)
|
|
g_object_ref (new_context->source_window);
|
|
else
|
|
{
|
|
new_context->source_window = gdk_window_foreign_new_for_display (display, source_window);
|
|
if (!new_context->source_window)
|
|
{
|
|
g_object_unref (new_context);
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
}
|
|
new_context->dest_window = event->any.window;
|
|
g_object_ref (new_context->dest_window);
|
|
|
|
new_context->targets = NULL;
|
|
if (get_types)
|
|
{
|
|
gdk_error_trap_push ();
|
|
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_error_trap_pop () || (format != 32) || (type != XA_ATOM))
|
|
{
|
|
g_object_unref (new_context);
|
|
|
|
if (data)
|
|
XFree (data);
|
|
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
atoms = (Atom *)data;
|
|
|
|
for (i=0; i<nitems; i++)
|
|
new_context->targets =
|
|
g_list_append (new_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])
|
|
new_context->targets =
|
|
g_list_append (new_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 (new_context->targets);
|
|
#endif /* G_ENABLE_DEBUG */
|
|
|
|
xdnd_manage_source_filter (new_context, new_context->source_window, TRUE);
|
|
xdnd_read_actions (new_context);
|
|
|
|
event->dnd.type = GDK_DRAG_ENTER;
|
|
event->dnd.context = new_context;
|
|
gdk_event_set_device (event, gdk_drag_context_get_device (new_context));
|
|
g_object_ref (new_context);
|
|
|
|
display_x11->current_dest_drag = new_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;
|
|
GdkDisplayX11 *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_DISPLAY_X11 (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)
|
|
{
|
|
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;
|
|
GdkDisplayX11 *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 ("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_DISPLAY_X11 (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_MOTION;
|
|
event->dnd.context = display_x11->current_dest_drag;
|
|
gdk_event_set_device (event, gdk_drag_context_get_device (event->dnd.context));
|
|
g_object_ref (display_x11->current_dest_drag);
|
|
|
|
event->dnd.time = time;
|
|
|
|
display_x11->current_dest_drag->suggested_action = xdnd_action_from_atom (display, action);
|
|
|
|
if (!(PRIVATE_DATA (display_x11->current_dest_drag))->xdnd_have_actions)
|
|
display_x11->current_dest_drag->actions = display_x11->current_dest_drag->suggested_action;
|
|
|
|
event->dnd.x_root = x_root;
|
|
event->dnd.y_root = y_root;
|
|
|
|
(PRIVATE_DATA (display_x11->current_dest_drag))->last_x = x_root;
|
|
(PRIVATE_DATA (display_x11->current_dest_drag))->last_y = y_root;
|
|
|
|
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;
|
|
GdkDisplayX11 *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 ("XdndDrop: source_window: %#x time: %d",
|
|
source_window, time));
|
|
|
|
display = GDK_WINDOW_DISPLAY (event->any.window);
|
|
display_x11 = GDK_DISPLAY_X11 (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))
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
private = PRIVATE_DATA (display_x11->current_dest_drag);
|
|
|
|
event->dnd.type = GDK_DROP_START;
|
|
|
|
event->dnd.context = display_x11->current_dest_drag;
|
|
gdk_event_set_device (event, gdk_drag_context_get_device (event->dnd.context));
|
|
g_object_ref (display_x11->current_dest_drag);
|
|
|
|
event->dnd.time = time;
|
|
event->dnd.x_root = private->last_x;
|
|
event->dnd.y_root = private->last_y;
|
|
|
|
gdk_x11_window_set_user_time (event->any.window, time);
|
|
|
|
return GDK_FILTER_TRANSLATE;
|
|
}
|
|
|
|
return GDK_FILTER_REMOVE;
|
|
}
|
|
|
|
/*************************************************************
|
|
************************** Public API ***********************
|
|
*************************************************************/
|
|
void
|
|
_gdk_dnd_init (GdkDisplay *display)
|
|
{
|
|
int i;
|
|
init_byte_order ();
|
|
|
|
gdk_display_add_client_message_filter (
|
|
display,
|
|
gdk_atom_intern_static_string ("_MOTIF_DRAG_AND_DROP_MESSAGE"),
|
|
motif_dnd_filter, NULL);
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (xdnd_filters); i++)
|
|
{
|
|
gdk_display_add_client_message_filter (
|
|
display,
|
|
gdk_atom_intern_static_string (xdnd_filters[i].atom_name),
|
|
xdnd_filters[i].func, NULL);
|
|
}
|
|
}
|
|
|
|
/* Source side */
|
|
|
|
static void
|
|
gdk_drag_do_leave (GdkDragContext *context, guint32 time)
|
|
{
|
|
if (context->dest_window)
|
|
{
|
|
switch (context->protocol)
|
|
{
|
|
case GDK_DRAG_PROTO_MOTIF:
|
|
motif_send_leave (context, time);
|
|
break;
|
|
case GDK_DRAG_PROTO_XDND:
|
|
xdnd_send_leave (context);
|
|
break;
|
|
case GDK_DRAG_PROTO_ROOTWIN:
|
|
case GDK_DRAG_PROTO_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_object_unref (context->dest_window);
|
|
context->dest_window = NULL;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_begin:
|
|
* @window: the source window for this drag.
|
|
* @targets: (transfer none) (element-type GdkAtom): the offered targets,
|
|
* as list of #GdkAtom<!-- -->s
|
|
*
|
|
* Starts a drag and creates a new drag context for it.
|
|
*
|
|
* This function is called by the drag source.
|
|
*
|
|
* Return value: (transfer full): a newly created #GdkDragContext.
|
|
**/
|
|
GdkDragContext *
|
|
gdk_drag_begin (GdkWindow *window,
|
|
GList *targets)
|
|
{
|
|
GdkDragContext *new_context;
|
|
GdkDisplay *display;
|
|
GdkDevice *device;
|
|
GdkDeviceManager *device_manager;
|
|
|
|
g_return_val_if_fail (window != NULL, NULL);
|
|
g_return_val_if_fail (GDK_WINDOW_IS_X11 (window), NULL);
|
|
|
|
new_context = gdk_drag_context_new ();
|
|
new_context->is_source = TRUE;
|
|
new_context->source_window = window;
|
|
g_object_ref (window);
|
|
|
|
new_context->targets = g_list_copy (targets);
|
|
precache_target_list (new_context);
|
|
|
|
new_context->actions = 0;
|
|
|
|
display = gdk_window_get_display (window);
|
|
device_manager = gdk_display_get_device_manager (display);
|
|
device = gdk_device_manager_get_client_pointer (device_manager);
|
|
gdk_drag_context_set_device (new_context, device);
|
|
|
|
return new_context;
|
|
}
|
|
|
|
static GdkNativeWindow
|
|
_gdk_drag_get_protocol_for_display (GdkDisplay *display,
|
|
GdkNativeWindow xid,
|
|
GdkDragProtocol *protocol,
|
|
guint *version)
|
|
|
|
{
|
|
GdkWindow *window;
|
|
GdkNativeWindow retval;
|
|
g_return_val_if_fail (GDK_IS_DISPLAY (display), None);
|
|
|
|
base_precache_atoms (display);
|
|
|
|
/* Check for a local drag
|
|
*/
|
|
window = gdk_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", xid));
|
|
return xid;
|
|
}
|
|
else if (_gdk_x11_display_is_root_window (display, (Window) 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", xid));
|
|
return retval;
|
|
}
|
|
else if ((retval = motif_check_dest (display, xid)))
|
|
{
|
|
*protocol = GDK_DRAG_PROTO_MOTIF;
|
|
GDK_NOTE (DND, g_message ("Entering motif window %#x\n", xid));
|
|
return retval;
|
|
}
|
|
else
|
|
{
|
|
/* Check if this is a root window */
|
|
|
|
gboolean rootwin = FALSE;
|
|
Atom type = None;
|
|
int format;
|
|
unsigned long nitems, after;
|
|
unsigned char *data;
|
|
|
|
if (_gdk_x11_display_is_root_window (display, (Window) xid))
|
|
rootwin = TRUE;
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
if (!rootwin)
|
|
{
|
|
if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
|
|
gdk_x11_get_xatom_by_name_for_display (display, "ENLIGHTENMENT_DESKTOP"),
|
|
0, 0, False, AnyPropertyType,
|
|
&type, &format, &nitems, &after, &data) == Success &&
|
|
type != None)
|
|
{
|
|
XFree (data);
|
|
rootwin = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Until I find out what window manager the next one is for,
|
|
* I'm leaving it commented out. It's supported in the
|
|
* xscreensaver sources, though.
|
|
*/
|
|
#if 0
|
|
if (!rootwin)
|
|
{
|
|
if (XGetWindowProperty (gdk_display, win,
|
|
gdk_x11_get_xatom_by_name ("__SWM_VROOT"),
|
|
0, 0, False, AnyPropertyType,
|
|
&type, &format, &nitems, &data) &&
|
|
type != None)
|
|
{
|
|
XFree (data);
|
|
rootwin = TRUE;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
gdk_error_trap_pop_ignored ();
|
|
|
|
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 */
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_get_protocol_for_display:
|
|
* @display: the #GdkDisplay where the destination window resides
|
|
* @xid: the windowing system id of the destination window.
|
|
* @protocol: location where the supported DND protocol is returned.
|
|
* @returns: the windowing system id of the window where the drop should happen. This
|
|
* may be @xid or the id of a proxy window, or zero if @xid doesn't
|
|
* support Drag and Drop.
|
|
*
|
|
* Finds out the DND protocol supported by a window.
|
|
*
|
|
* Since: 2.2
|
|
*/
|
|
GdkNativeWindow
|
|
gdk_drag_get_protocol_for_display (GdkDisplay *display,
|
|
GdkNativeWindow xid,
|
|
GdkDragProtocol *protocol)
|
|
{
|
|
return _gdk_drag_get_protocol_for_display (display, xid, protocol, NULL);
|
|
}
|
|
|
|
static GdkWindowCache *
|
|
drag_context_find_window_cache (GdkDragContext *context,
|
|
GdkScreen *screen)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
GSList *tmp_list;
|
|
GdkWindowCache *cache;
|
|
|
|
for (tmp_list = private->window_caches; tmp_list; tmp_list = tmp_list->next)
|
|
{
|
|
cache = tmp_list->data;
|
|
if (cache->screen == screen)
|
|
return cache;
|
|
}
|
|
|
|
cache = gdk_window_cache_new (screen);
|
|
private->window_caches = g_slist_prepend (private->window_caches, cache);
|
|
|
|
return cache;
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_find_window_for_screen:
|
|
* @context: a #GdkDragContext
|
|
* @drag_window: a window which may be at the pointer position, but
|
|
* should be ignored, since it is put up by the drag source as an icon.
|
|
* @screen: the screen where the destination window is sought.
|
|
* @x_root: the x position of the pointer in root coordinates.
|
|
* @y_root: the y position of the pointer in root coordinates.
|
|
* @dest_window: (out): location to store the destination window in.
|
|
* @protocol: (out): location to store the DND protocol in.
|
|
*
|
|
* Finds the destination window and DND protocol to use at the
|
|
* given pointer position.
|
|
*
|
|
* This function is called by the drag source to obtain the
|
|
* @dest_window and @protocol parameters for gdk_drag_motion().
|
|
*
|
|
* Since: 2.2
|
|
**/
|
|
void
|
|
gdk_drag_find_window_for_screen (GdkDragContext *context,
|
|
GdkWindow *drag_window,
|
|
GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkWindow **dest_window,
|
|
GdkDragProtocol *protocol)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
GdkWindowCache *window_cache;
|
|
GdkDisplay *display;
|
|
Window dest;
|
|
|
|
g_return_if_fail (context != NULL);
|
|
|
|
display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
|
|
window_cache = drag_context_find_window_cache (context, 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, y_root);
|
|
|
|
if (private->dest_xid != dest)
|
|
{
|
|
Window recipient;
|
|
private->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 explicitely, the third implicitly through
|
|
* protocol->dest_xid.
|
|
*/
|
|
if ((recipient = _gdk_drag_get_protocol_for_display (display, dest,
|
|
protocol, &private->version)))
|
|
{
|
|
*dest_window = gdk_window_lookup_for_display (display, recipient);
|
|
if (*dest_window)
|
|
g_object_ref (*dest_window);
|
|
else
|
|
*dest_window = gdk_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;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_motion:
|
|
* @context: a #GdkDragContext.
|
|
* @dest_window: the new destination window, obtained by
|
|
* gdk_drag_find_window().
|
|
* @protocol: the DND protocol in use, obtained by gdk_drag_find_window().
|
|
* @x_root: the x position of the pointer in root coordinates.
|
|
* @y_root: the y position of the pointer in root coordinates.
|
|
* @suggested_action: the suggested action.
|
|
* @possible_actions: the possible actions.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Updates the drag context when the pointer moves or the
|
|
* set of actions changes.
|
|
*
|
|
* This function is called by the drag source.
|
|
*
|
|
* Return value: FIXME
|
|
**/
|
|
gboolean
|
|
gdk_drag_motion (GdkDragContext *context,
|
|
GdkWindow *dest_window,
|
|
GdkDragProtocol protocol,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkDragAction suggested_action,
|
|
GdkDragAction possible_actions,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private = PRIVATE_DATA (context);
|
|
|
|
g_return_val_if_fail (context != NULL, FALSE);
|
|
g_return_val_if_fail (dest_window == NULL || GDK_WINDOW_IS_X11 (dest_window), FALSE);
|
|
|
|
private->old_actions = context->actions;
|
|
context->actions = possible_actions;
|
|
|
|
if (private->old_actions != possible_actions)
|
|
private->xdnd_actions_set = FALSE;
|
|
|
|
if (protocol == GDK_DRAG_PROTO_XDND && private->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 private->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),
|
|
&private->version);
|
|
}
|
|
}
|
|
|
|
/* When we have a Xdnd target, make sure our XdndActionList
|
|
* matches the current actions;
|
|
*/
|
|
if (protocol == GDK_DRAG_PROTO_XDND && !private->xdnd_actions_set)
|
|
{
|
|
if (dest_window)
|
|
{
|
|
if (gdk_window_get_window_type (dest_window) == GDK_WINDOW_FOREIGN)
|
|
xdnd_set_actions (context);
|
|
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;
|
|
PRIVATE_DATA (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, time);
|
|
private->drag_status = GDK_DRAG_STATUS_DRAG;
|
|
|
|
/* Check if new destination accepts drags, and which protocol */
|
|
|
|
if (dest_window)
|
|
{
|
|
context->dest_window = dest_window;
|
|
private->drop_xid = private->dest_xid;
|
|
g_object_ref (context->dest_window);
|
|
context->protocol = protocol;
|
|
|
|
switch (protocol)
|
|
{
|
|
case GDK_DRAG_PROTO_MOTIF:
|
|
motif_send_enter (context, time);
|
|
break;
|
|
|
|
case GDK_DRAG_PROTO_XDND:
|
|
xdnd_send_enter (context);
|
|
break;
|
|
|
|
case GDK_DRAG_PROTO_ROOTWIN:
|
|
case GDK_DRAG_PROTO_NONE:
|
|
default:
|
|
break;
|
|
}
|
|
private->old_action = suggested_action;
|
|
context->suggested_action = suggested_action;
|
|
private->old_actions = possible_actions;
|
|
}
|
|
else
|
|
{
|
|
context->dest_window = NULL;
|
|
private->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
|
|
{
|
|
private->old_action = context->suggested_action;
|
|
context->suggested_action = suggested_action;
|
|
}
|
|
|
|
/* Send a drag-motion event */
|
|
|
|
private->last_x = x_root;
|
|
private->last_y = y_root;
|
|
|
|
if (context->dest_window)
|
|
{
|
|
if (private->drag_status == GDK_DRAG_STATUS_DRAG)
|
|
{
|
|
switch (context->protocol)
|
|
{
|
|
case GDK_DRAG_PROTO_MOTIF:
|
|
motif_send_motion (context, x_root, y_root, suggested_action, time);
|
|
break;
|
|
|
|
case GDK_DRAG_PROTO_XDND:
|
|
xdnd_send_motion (context, x_root, y_root, 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;
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_drop:
|
|
* @context: a #GdkDragContext.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Drops on the current destination.
|
|
*
|
|
* This function is called by the drag source.
|
|
**/
|
|
void
|
|
gdk_drag_drop (GdkDragContext *context,
|
|
guint32 time)
|
|
{
|
|
g_return_if_fail (context != NULL);
|
|
|
|
if (context->dest_window)
|
|
{
|
|
switch (context->protocol)
|
|
{
|
|
case GDK_DRAG_PROTO_MOTIF:
|
|
motif_send_leave (context, time);
|
|
motif_send_drop (context, time);
|
|
break;
|
|
|
|
case GDK_DRAG_PROTO_XDND:
|
|
xdnd_send_drop (context, 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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_abort:
|
|
* @context: a #GdkDragContext.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Aborts a drag without dropping.
|
|
*
|
|
* This function is called by the drag source.
|
|
**/
|
|
void
|
|
gdk_drag_abort (GdkDragContext *context,
|
|
guint32 time)
|
|
{
|
|
g_return_if_fail (context != NULL);
|
|
|
|
gdk_drag_do_leave (context, time);
|
|
}
|
|
|
|
/* Destination side */
|
|
|
|
/**
|
|
* gdk_drag_status:
|
|
* @context: a #GdkDragContext.
|
|
* @action: the selected action which will be taken when a drop happens,
|
|
* or 0 to indicate that a drop will not be accepted.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Selects one of the actions offered by the drag source.
|
|
*
|
|
* This function is called by the drag destination in response to
|
|
* gdk_drag_motion() called by the drag source.
|
|
**/
|
|
void
|
|
gdk_drag_status (GdkDragContext *context,
|
|
GdkDragAction action,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
XEvent xev;
|
|
GdkDisplay *display;
|
|
|
|
g_return_if_fail (context != NULL);
|
|
|
|
private = PRIVATE_DATA (context);
|
|
display = GDK_WINDOW_DISPLAY (context->source_window);
|
|
|
|
context->action = action;
|
|
|
|
if (context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
{
|
|
gboolean need_coords = FALSE;
|
|
|
|
xev.xclient.type = ClientMessage;
|
|
xev.xclient.message_type = gdk_x11_get_xatom_by_name_for_display (display,
|
|
"_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
xev.xclient.window = GDK_WINDOW_XID (context->source_window);
|
|
|
|
if (private->drag_status == GDK_DRAG_STATUS_ACTION_WAIT)
|
|
{
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmOPERATION_CHANGED | 0x80;
|
|
}
|
|
else
|
|
{
|
|
if ((action != 0) != (private->old_action != 0))
|
|
{
|
|
if (action != 0)
|
|
{
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDROP_SITE_ENTER | 0x80;
|
|
need_coords = TRUE;
|
|
}
|
|
else
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDROP_SITE_LEAVE | 0x80;
|
|
}
|
|
else
|
|
{
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDRAG_MOTION | 0x80;
|
|
need_coords = TRUE;
|
|
}
|
|
}
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
|
|
switch (action)
|
|
{
|
|
case GDK_ACTION_MOVE:
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_MOVE;
|
|
break;
|
|
case GDK_ACTION_COPY:
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_COPY;
|
|
break;
|
|
case GDK_ACTION_LINK:
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_LINK;
|
|
break;
|
|
default:
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_NOOP;
|
|
break;
|
|
}
|
|
|
|
if (action)
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) |= (XmDROP_SITE_VALID << 4);
|
|
else
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) |= (XmNO_DROP_SITE << 4);
|
|
|
|
MOTIF_XCLIENT_LONG (&xev, 1) = time;
|
|
|
|
if (need_coords)
|
|
{
|
|
MOTIF_XCLIENT_SHORT (&xev, 4) = private->last_x;
|
|
MOTIF_XCLIENT_SHORT (&xev, 5) = private->last_y;
|
|
}
|
|
else
|
|
MOTIF_XCLIENT_LONG (&xev, 2) = 0;
|
|
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = 0;
|
|
|
|
if (!_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->source_window),
|
|
FALSE, 0, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->source_window)));
|
|
}
|
|
else 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, context->source_window,
|
|
FALSE, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->source_window)));
|
|
}
|
|
|
|
private->old_action = action;
|
|
}
|
|
|
|
/**
|
|
* gdk_drop_reply:
|
|
* @context: a #GdkDragContext.
|
|
* @ok: %TRUE if the drop is accepted.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Accepts or rejects a drop.
|
|
*
|
|
* This function is called by the drag destination in response
|
|
* to a drop initiated by the drag source.
|
|
**/
|
|
void
|
|
gdk_drop_reply (GdkDragContext *context,
|
|
gboolean ok,
|
|
guint32 time)
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
|
|
g_return_if_fail (context != NULL);
|
|
|
|
private = PRIVATE_DATA (context);
|
|
|
|
if (context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
{
|
|
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,
|
|
"_MOTIF_DRAG_AND_DROP_MESSAGE");
|
|
xev.xclient.format = 8;
|
|
|
|
MOTIF_XCLIENT_BYTE (&xev, 0) = XmDROP_START | 0x80;
|
|
MOTIF_XCLIENT_BYTE (&xev, 1) = local_byte_order;
|
|
if (ok)
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_COPY |
|
|
(XmDROP_SITE_VALID << 4) |
|
|
(XmDROP_NOOP << 8) |
|
|
(XmDROP << 12);
|
|
else
|
|
MOTIF_XCLIENT_SHORT (&xev, 1) = XmDROP_NOOP |
|
|
(XmNO_DROP_SITE << 4) |
|
|
(XmDROP_NOOP << 8) |
|
|
(XmDROP_CANCEL << 12);
|
|
MOTIF_XCLIENT_SHORT (&xev, 2) = private->last_x;
|
|
MOTIF_XCLIENT_SHORT (&xev, 3) = private->last_y;
|
|
MOTIF_XCLIENT_LONG (&xev, 2) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 3) = 0;
|
|
MOTIF_XCLIENT_LONG (&xev, 4) = 0;
|
|
|
|
_gdk_send_xevent (display,
|
|
GDK_WINDOW_XID (context->source_window),
|
|
FALSE, 0, &xev);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gdk_drop_finish:
|
|
* @context: a #GtkDragContext.
|
|
* @success: %TRUE if the data was successfully received.
|
|
* @time_: the timestamp for this operation.
|
|
*
|
|
* Ends the drag operation after a drop.
|
|
*
|
|
* This function is called by the drag destination.
|
|
**/
|
|
void
|
|
gdk_drop_finish (GdkDragContext *context,
|
|
gboolean success,
|
|
guint32 time)
|
|
{
|
|
g_return_if_fail (context != NULL);
|
|
|
|
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 (context, context->source_window,
|
|
FALSE, &xev))
|
|
GDK_NOTE (DND,
|
|
g_message ("Send event to %lx failed",
|
|
GDK_WINDOW_XID (context->source_window)));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* gdk_window_register_dnd:
|
|
* @window: a #GdkWindow.
|
|
*
|
|
* Registers a window as a potential drop destination.
|
|
*/
|
|
void
|
|
gdk_window_register_dnd (GdkWindow *window)
|
|
{
|
|
static const gulong xdnd_version = 5;
|
|
MotifDragReceiverInfo info;
|
|
Atom motif_drag_receiver_info_atom;
|
|
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 Motif drag receiver information property */
|
|
|
|
motif_drag_receiver_info_atom = gdk_x11_get_xatom_by_name_for_display (display,
|
|
"_MOTIF_DRAG_RECEIVER_INFO");
|
|
/* initialize to zero to avoid writing uninitialized data to socket */
|
|
memset(&info, 0, sizeof(info));
|
|
info.byte_order = local_byte_order;
|
|
info.protocol_version = 0;
|
|
info.protocol_style = XmDRAG_DYNAMIC;
|
|
info.proxy_window = None;
|
|
info.num_drop_sites = 0;
|
|
info.total_size = sizeof(info);
|
|
|
|
XChangeProperty (GDK_DISPLAY_XDISPLAY (display), GDK_WINDOW_XID (window),
|
|
motif_drag_receiver_info_atom,
|
|
motif_drag_receiver_info_atom,
|
|
8, PropModeReplace,
|
|
(guchar *)&info,
|
|
sizeof (info));
|
|
|
|
/* 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);
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_get_selection:
|
|
* @context: a #GdkDragContext.
|
|
*
|
|
* Returns the selection atom for the current source window.
|
|
*
|
|
* Return value: the selection atom.
|
|
**/
|
|
GdkAtom
|
|
gdk_drag_get_selection (GdkDragContext *context)
|
|
{
|
|
g_return_val_if_fail (context != NULL, GDK_NONE);
|
|
|
|
if (context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
return gdk_x11_xatom_to_atom_for_display (GDK_WINDOW_DISPLAY (context->source_window),
|
|
(PRIVATE_DATA (context))->motif_selection);
|
|
else if (context->protocol == GDK_DRAG_PROTO_XDND)
|
|
return gdk_atom_intern_static_string ("XdndSelection");
|
|
else
|
|
return GDK_NONE;
|
|
}
|
|
|
|
/**
|
|
* gdk_drag_drop_succeeded:
|
|
* @context: a #GdkDragContext
|
|
*
|
|
* Returns whether the dropped data has been successfully
|
|
* transferred. This function is intended to be used while
|
|
* handling a %GDK_DROP_FINISHED event, its return value is
|
|
* meaningless at other times.
|
|
*
|
|
* Return value: %TRUE if the drop was successful.
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
gboolean
|
|
gdk_drag_drop_succeeded (GdkDragContext *context)
|
|
{
|
|
GdkDragContextPrivateX11 *private;
|
|
|
|
g_return_val_if_fail (context != NULL, FALSE);
|
|
|
|
private = PRIVATE_DATA (context);
|
|
|
|
return !private->drop_failed;
|
|
}
|