1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 /* By Owen Taylor <otaylor@gtk.org> 98/4/4 */
22 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
23 * file for a list of people on the GTK+ Team. See the ChangeLog
24 * files for a list of changes. These files are distributed with
25 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
31 #include "gdk/gdkkeysyms.h"
33 #include "gtkmarshalers.h"
34 #include "gtkwindow.h"
36 #include "gtkprivate.h"
37 #include "gtksocket.h"
38 #include "gtksocketprivate.h"
46 * @Short_description: Container for widgets from other processes
48 * @See_also: #GtkPlug, <ulink url="http://www.freedesktop.org/Standards/xembed-spec">XEmbed</ulink>
50 * Together with #GtkPlug, #GtkSocket provides the ability
51 * to embed widgets from one process into another process
52 * in a fashion that is transparent to the user. One
53 * process creates a #GtkSocket widget and passes
54 * that widget's window ID to the other process,
55 * which then creates a #GtkPlug with that window ID.
56 * Any widgets contained in the #GtkPlug then will appear
57 * inside the first application's window.
59 * The socket's window ID is obtained by using
60 * gtk_socket_get_id(). Before using this function,
61 * the socket must have been realized, and for hence,
62 * have been added to its parent.
65 * <title>Obtaining the window ID of a socket.</title>
67 * GtkWidget *socket = gtk_socket_new (<!-- -->);
68 * gtk_widget_show (socket);
69 * gtk_container_add (GTK_CONTAINER (parent), socket);
71 * /<!---->* The following call is only necessary if one of
72 * * the ancestors of the socket is not yet visible.
74 * gtk_widget_realize (socket);
75 * g_print ("The ID of the sockets window is %#x\n",
76 * gtk_socket_get_id (socket));
80 * Note that if you pass the window ID of the socket to another
81 * process that will create a plug in the socket, you
82 * must make sure that the socket widget is not destroyed
83 * until that plug is created. Violating this rule will
84 * cause unpredictable consequences, the most likely
85 * consequence being that the plug will appear as a
86 * separate toplevel window. You can check if the plug
87 * has been created by using gtk_socket_get_plug_window(). If
88 * it returns a non-%NULL value, then the plug has been
89 * successfully created inside of the socket.
91 * When GTK+ is notified that the embedded window has been
92 * destroyed, then it will destroy the socket as well. You
93 * should always, therefore, be prepared for your sockets
94 * to be destroyed at any time when the main event loop
95 * is running. To prevent this from happening, you can
96 * connect to the #GtkSocket::plug-removed signal.
98 * The communication between a #GtkSocket and a #GtkPlug follows the
99 * <ulink url="http://www.freedesktop.org/Standards/xembed-spec">XEmbed</ulink>
100 * protocol. This protocol has also been implemented in other toolkits, e.g.
101 * <application>Qt</application>, allowing the same level of integration
102 * when embedding a <application>Qt</application> widget in GTK or vice versa.
104 * A socket can also be used to swallow arbitrary
105 * pre-existing top-level windows using gtk_socket_steal(),
106 * though the integration when this is done will not be as close
107 * as between a #GtkPlug and a #GtkSocket.
110 * The #GtkPlug and #GtkSocket widgets are currently not available
111 * on all platforms supported by GTK+.
115 /* Forward declararations */
117 static void gtk_socket_finalize (GObject *object);
118 static void gtk_socket_notify (GObject *object,
120 static void gtk_socket_realize (GtkWidget *widget);
121 static void gtk_socket_unrealize (GtkWidget *widget);
122 static void gtk_socket_size_request (GtkWidget *widget,
123 GtkRequisition *requisition);
124 static void gtk_socket_size_allocate (GtkWidget *widget,
125 GtkAllocation *allocation);
126 static void gtk_socket_hierarchy_changed (GtkWidget *widget,
127 GtkWidget *old_toplevel);
128 static void gtk_socket_grab_notify (GtkWidget *widget,
129 gboolean was_grabbed);
130 static gboolean gtk_socket_key_event (GtkWidget *widget,
132 static gboolean gtk_socket_focus (GtkWidget *widget,
133 GtkDirectionType direction);
134 static void gtk_socket_remove (GtkContainer *container,
136 static void gtk_socket_forall (GtkContainer *container,
137 gboolean include_internals,
138 GtkCallback callback,
139 gpointer callback_data);
147 GdkModifierType accel_mods;
156 static guint socket_signals[LAST_SIGNAL] = { 0 };
159 * _gtk_socket_get_private:
161 * @socket: a #GtkSocket
163 * Returns the private data associated with a GtkSocket, creating it
164 * first if necessary.
167 _gtk_socket_get_private (GtkSocket *socket)
169 return G_TYPE_INSTANCE_GET_PRIVATE (socket, GTK_TYPE_SOCKET, GtkSocketPrivate);
172 G_DEFINE_TYPE (GtkSocket, gtk_socket, GTK_TYPE_CONTAINER)
175 gtk_socket_finalize (GObject *object)
177 GtkSocket *socket = GTK_SOCKET (object);
179 g_object_unref (socket->accel_group);
180 socket->accel_group = NULL;
182 G_OBJECT_CLASS (gtk_socket_parent_class)->finalize (object);
186 gtk_socket_class_init (GtkSocketClass *class)
188 GtkWidgetClass *widget_class;
189 GtkContainerClass *container_class;
190 GObjectClass *gobject_class;
192 gobject_class = (GObjectClass *) class;
193 widget_class = (GtkWidgetClass*) class;
194 container_class = (GtkContainerClass*) class;
196 gobject_class->finalize = gtk_socket_finalize;
197 gobject_class->notify = gtk_socket_notify;
199 widget_class->realize = gtk_socket_realize;
200 widget_class->unrealize = gtk_socket_unrealize;
201 widget_class->size_request = gtk_socket_size_request;
202 widget_class->size_allocate = gtk_socket_size_allocate;
203 widget_class->hierarchy_changed = gtk_socket_hierarchy_changed;
204 widget_class->grab_notify = gtk_socket_grab_notify;
205 widget_class->key_press_event = gtk_socket_key_event;
206 widget_class->key_release_event = gtk_socket_key_event;
207 widget_class->focus = gtk_socket_focus;
209 /* We don't want to show_all/hide_all the in-process
212 widget_class->show_all = gtk_widget_show;
213 widget_class->hide_all = gtk_widget_hide;
215 container_class->remove = gtk_socket_remove;
216 container_class->forall = gtk_socket_forall;
219 * GtkSocket::plug-added:
220 * @socket_: the object which received the signal
222 * This signal is emitted when a client is successfully
223 * added to the socket.
225 socket_signals[PLUG_ADDED] =
226 g_signal_new (I_("plug-added"),
227 G_OBJECT_CLASS_TYPE (class),
229 G_STRUCT_OFFSET (GtkSocketClass, plug_added),
231 _gtk_marshal_VOID__VOID,
235 * GtkSocket::plug-removed:
236 * @socket_: the object which received the signal
238 * This signal is emitted when a client is removed from the socket.
239 * The default action is to destroy the #GtkSocket widget, so if you
240 * want to reuse it you must add a signal handler that returns %TRUE.
242 * Return value: %TRUE to stop other handlers from being invoked.
244 socket_signals[PLUG_REMOVED] =
245 g_signal_new (I_("plug-removed"),
246 G_OBJECT_CLASS_TYPE (class),
248 G_STRUCT_OFFSET (GtkSocketClass, plug_removed),
249 _gtk_boolean_handled_accumulator, NULL,
250 _gtk_marshal_BOOLEAN__VOID,
253 g_type_class_add_private (gobject_class, sizeof (GtkSocketPrivate));
257 gtk_socket_init (GtkSocket *socket)
259 socket->request_width = 0;
260 socket->request_height = 0;
261 socket->current_width = 0;
262 socket->current_height = 0;
264 socket->plug_window = NULL;
265 socket->plug_widget = NULL;
266 socket->focus_in = FALSE;
267 socket->have_size = FALSE;
268 socket->need_map = FALSE;
269 socket->active = FALSE;
271 socket->accel_group = gtk_accel_group_new ();
272 g_object_set_data (G_OBJECT (socket->accel_group), I_("gtk-socket"), socket);
278 * Create a new empty #GtkSocket.
280 * Return value: the new #GtkSocket.
283 gtk_socket_new (void)
287 socket = g_object_new (GTK_TYPE_SOCKET, NULL);
289 return GTK_WIDGET (socket);
294 * @socket_: a #GtkSocket
295 * @window_id: the window ID of a client participating in the XEMBED protocol.
297 * Adds an XEMBED client, such as a #GtkPlug, to the #GtkSocket. The
298 * client may be in the same process or in a different process.
300 * To embed a #GtkPlug in a #GtkSocket, you can either create the
301 * #GtkPlug with <literal>gtk_plug_new (0)</literal>, call
302 * gtk_plug_get_id() to get the window ID of the plug, and then pass that to the
303 * gtk_socket_add_id(), or you can call gtk_socket_get_id() to get the
304 * window ID for the socket, and call gtk_plug_new() passing in that
307 * The #GtkSocket must have already be added into a toplevel window
308 * before you can make this call.
311 gtk_socket_add_id (GtkSocket *socket,
312 GdkNativeWindow window_id)
314 g_return_if_fail (GTK_IS_SOCKET (socket));
315 g_return_if_fail (GTK_WIDGET_ANCHORED (socket));
317 if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
318 gtk_widget_realize (GTK_WIDGET (socket));
320 _gtk_socket_add_window (socket, window_id, TRUE);
325 * @socket_: a #GtkSocket.
327 * Gets the window ID of a #GtkSocket widget, which can then
328 * be used to create a client embedded inside the socket, for
329 * instance with gtk_plug_new().
331 * The #GtkSocket must have already be added into a toplevel window
332 * before you can make this call.
334 * Return value: the window ID for the socket
337 gtk_socket_get_id (GtkSocket *socket)
339 g_return_val_if_fail (GTK_IS_SOCKET (socket), 0);
340 g_return_val_if_fail (GTK_WIDGET_ANCHORED (socket), 0);
342 if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
343 gtk_widget_realize (GTK_WIDGET (socket));
345 return _gtk_socket_windowing_get_id (socket);
349 * gtk_socket_get_plug_window:
350 * @socket_: a #GtkSocket.
352 * Retrieves the window of the plug. Use this to check if the plug has
353 * been created inside of the socket.
355 * Return value: the window of the plug if available, or %NULL
360 gtk_socket_get_plug_window (GtkSocket *socket)
362 g_return_val_if_fail (GTK_IS_SOCKET (socket), NULL);
364 return socket->plug_window;
368 gtk_socket_realize (GtkWidget *widget)
370 GtkSocket *socket = GTK_SOCKET (widget);
371 GdkWindowAttr attributes;
372 gint attributes_mask;
374 gtk_widget_set_realized (widget, TRUE);
376 attributes.window_type = GDK_WINDOW_CHILD;
377 attributes.x = widget->allocation.x;
378 attributes.y = widget->allocation.y;
379 attributes.width = widget->allocation.width;
380 attributes.height = widget->allocation.height;
381 attributes.wclass = GDK_INPUT_OUTPUT;
382 attributes.visual = gtk_widget_get_visual (widget);
383 attributes.colormap = gtk_widget_get_colormap (widget);
384 attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
386 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
388 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
389 &attributes, attributes_mask);
390 gdk_window_set_user_data (widget->window, socket);
392 widget->style = gtk_style_attach (widget->style, widget->window);
393 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
395 _gtk_socket_windowing_realize_window (socket);
397 gdk_window_add_filter (widget->window,
398 _gtk_socket_windowing_filter_func,
401 /* We sync here so that we make sure that if the XID for
402 * our window is passed to another application, SubstructureRedirectMask
403 * will be set by the time the other app creates its window.
405 gdk_display_sync (gtk_widget_get_display (widget));
409 * _gtk_socket_end_embedding:
411 * @socket: a #GtkSocket
413 * Called to end the embedding of a plug in the socket.
416 _gtk_socket_end_embedding (GtkSocket *socket)
418 GtkSocketPrivate *private = _gtk_socket_get_private (socket);
419 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
421 if (GTK_IS_WINDOW (toplevel))
422 _gtk_socket_windowing_end_embedding_toplevel (socket);
424 g_object_unref (socket->plug_window);
425 socket->plug_window = NULL;
426 socket->current_width = 0;
427 socket->current_height = 0;
428 private->resize_count = 0;
430 gtk_accel_group_disconnect (socket->accel_group, NULL);
434 gtk_socket_unrealize (GtkWidget *widget)
436 GtkSocket *socket = GTK_SOCKET (widget);
438 gtk_widget_set_realized (widget, FALSE);
440 if (socket->plug_widget)
442 _gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
444 else if (socket->plug_window)
446 _gtk_socket_end_embedding (socket);
449 GTK_WIDGET_CLASS (gtk_socket_parent_class)->unrealize (widget);
453 gtk_socket_size_request (GtkWidget *widget,
454 GtkRequisition *requisition)
456 GtkSocket *socket = GTK_SOCKET (widget);
458 if (socket->plug_widget)
460 gtk_widget_size_request (socket->plug_widget, requisition);
464 if (socket->is_mapped && !socket->have_size && socket->plug_window)
465 _gtk_socket_windowing_size_request (socket);
467 if (socket->is_mapped && socket->have_size)
469 requisition->width = MAX (socket->request_width, 1);
470 requisition->height = MAX (socket->request_height, 1);
474 requisition->width = 1;
475 requisition->height = 1;
481 gtk_socket_size_allocate (GtkWidget *widget,
482 GtkAllocation *allocation)
484 GtkSocket *socket = GTK_SOCKET (widget);
486 widget->allocation = *allocation;
487 if (gtk_widget_get_realized (widget))
489 gdk_window_move_resize (widget->window,
490 allocation->x, allocation->y,
491 allocation->width, allocation->height);
493 if (socket->plug_widget)
495 GtkAllocation child_allocation;
497 child_allocation.x = 0;
498 child_allocation.y = 0;
499 child_allocation.width = allocation->width;
500 child_allocation.height = allocation->height;
502 gtk_widget_size_allocate (socket->plug_widget, &child_allocation);
504 else if (socket->plug_window)
506 GtkSocketPrivate *private = _gtk_socket_get_private (socket);
508 gdk_error_trap_push ();
510 if (allocation->width != socket->current_width ||
511 allocation->height != socket->current_height)
513 gdk_window_move_resize (socket->plug_window,
515 allocation->width, allocation->height);
516 if (private->resize_count)
517 private->resize_count--;
519 GTK_NOTE (PLUGSOCKET,
520 g_message ("GtkSocket - allocated: %d %d",
521 allocation->width, allocation->height));
522 socket->current_width = allocation->width;
523 socket->current_height = allocation->height;
526 if (socket->need_map)
528 gdk_window_show (socket->plug_window);
529 socket->need_map = FALSE;
532 while (private->resize_count)
534 _gtk_socket_windowing_send_configure_event (socket);
535 private->resize_count--;
536 GTK_NOTE (PLUGSOCKET,
537 g_message ("GtkSocket - sending synthetic configure: %d %d",
538 allocation->width, allocation->height));
541 gdk_display_sync (gtk_widget_get_display (widget));
542 gdk_error_trap_pop ();
548 activate_key (GtkAccelGroup *accel_group,
549 GObject *acceleratable,
551 GdkModifierType accel_mods,
552 GrabbedKey *grabbed_key)
554 GdkEvent *gdk_event = gtk_get_current_event ();
556 GtkSocket *socket = g_object_get_data (G_OBJECT (accel_group), "gtk-socket");
557 gboolean retval = FALSE;
559 if (gdk_event && gdk_event->type == GDK_KEY_PRESS && socket->plug_window)
561 _gtk_socket_windowing_send_key_event (socket, gdk_event, TRUE);
566 gdk_event_free (gdk_event);
572 find_accel_key (GtkAccelKey *key,
576 GrabbedKey *grabbed_key = data;
578 return (key->accel_key == grabbed_key->accel_key &&
579 key->accel_mods == grabbed_key->accel_mods);
583 * _gtk_socket_add_grabbed_key:
585 * @socket: a #GtkSocket
587 * @modifiers: modifiers for the key
589 * Called from the GtkSocket platform-specific backend when the
590 * corresponding plug has told the socket to grab a key.
593 _gtk_socket_add_grabbed_key (GtkSocket *socket,
595 GdkModifierType modifiers)
598 GrabbedKey *grabbed_key;
600 grabbed_key = g_new (GrabbedKey, 1);
602 grabbed_key->accel_key = keyval;
603 grabbed_key->accel_mods = modifiers;
605 if (gtk_accel_group_find (socket->accel_group,
609 g_warning ("GtkSocket: request to add already present grabbed key %u,%#x\n",
611 g_free (grabbed_key);
615 closure = g_cclosure_new (G_CALLBACK (activate_key), grabbed_key, (GClosureNotify)g_free);
617 gtk_accel_group_connect (socket->accel_group, keyval, modifiers, GTK_ACCEL_LOCKED,
622 * _gtk_socket_remove_grabbed_key:
624 * @socket: a #GtkSocket
626 * @modifiers: modifiers for the key
628 * Called from the GtkSocket backend when the corresponding plug has
629 * told the socket to remove a key grab.
632 _gtk_socket_remove_grabbed_key (GtkSocket *socket,
634 GdkModifierType modifiers)
636 if (!gtk_accel_group_disconnect_key (socket->accel_group, keyval, modifiers))
637 g_warning ("GtkSocket: request to remove non-present grabbed key %u,%#x\n",
642 socket_update_focus_in (GtkSocket *socket)
644 gboolean focus_in = FALSE;
646 if (socket->plug_window)
648 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
650 if (gtk_widget_is_toplevel (toplevel) &&
651 GTK_WINDOW (toplevel)->has_toplevel_focus &&
652 gtk_widget_is_focus (GTK_WIDGET (socket)))
656 if (focus_in != socket->focus_in)
658 socket->focus_in = focus_in;
660 _gtk_socket_windowing_focus_change (socket, focus_in);
665 socket_update_active (GtkSocket *socket)
667 gboolean active = FALSE;
669 if (socket->plug_window)
671 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
673 if (gtk_widget_is_toplevel (toplevel) &&
674 GTK_WINDOW (toplevel)->is_active)
678 if (active != socket->active)
680 socket->active = active;
682 _gtk_socket_windowing_update_active (socket, active);
687 gtk_socket_hierarchy_changed (GtkWidget *widget,
688 GtkWidget *old_toplevel)
690 GtkSocket *socket = GTK_SOCKET (widget);
691 GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
693 if (toplevel && !GTK_IS_WINDOW (toplevel))
696 if (toplevel != socket->toplevel)
698 if (socket->toplevel)
700 gtk_window_remove_accel_group (GTK_WINDOW (socket->toplevel), socket->accel_group);
701 g_signal_handlers_disconnect_by_func (socket->toplevel,
702 socket_update_focus_in,
704 g_signal_handlers_disconnect_by_func (socket->toplevel,
705 socket_update_active,
709 socket->toplevel = toplevel;
713 gtk_window_add_accel_group (GTK_WINDOW (socket->toplevel), socket->accel_group);
714 g_signal_connect_swapped (socket->toplevel, "notify::has-toplevel-focus",
715 G_CALLBACK (socket_update_focus_in), socket);
716 g_signal_connect_swapped (socket->toplevel, "notify::is-active",
717 G_CALLBACK (socket_update_active), socket);
720 socket_update_focus_in (socket);
721 socket_update_active (socket);
726 gtk_socket_grab_notify (GtkWidget *widget,
727 gboolean was_grabbed)
729 GtkSocket *socket = GTK_SOCKET (widget);
731 if (!socket->same_app)
732 _gtk_socket_windowing_update_modality (socket, !was_grabbed);
736 gtk_socket_key_event (GtkWidget *widget,
739 GtkSocket *socket = GTK_SOCKET (widget);
741 if (gtk_widget_has_focus (widget) && socket->plug_window && !socket->plug_widget)
743 _gtk_socket_windowing_send_key_event (socket, (GdkEvent *) event, FALSE);
752 gtk_socket_notify (GObject *object,
755 if (!strcmp (pspec->name, "is-focus"))
757 socket_update_focus_in (GTK_SOCKET (object));
761 * _gtk_socket_claim_focus:
763 * @socket: a #GtkSocket
766 * Claims focus for the socket. XXX send_event?
769 _gtk_socket_claim_focus (GtkSocket *socket,
772 GtkWidget *widget = GTK_WIDGET (socket);
775 socket->focus_in = TRUE; /* Otherwise, our notify handler will send FOCUS_IN */
777 /* Oh, the trickery... */
779 gtk_widget_set_can_focus (widget, TRUE);
780 gtk_widget_grab_focus (widget);
781 gtk_widget_set_can_focus (widget, FALSE);
785 gtk_socket_focus (GtkWidget *widget,
786 GtkDirectionType direction)
788 GtkSocket *socket = GTK_SOCKET (widget);
790 if (socket->plug_widget)
791 return gtk_widget_child_focus (socket->plug_widget, direction);
793 if (!gtk_widget_is_focus (widget))
795 _gtk_socket_windowing_focus (socket, direction);
796 _gtk_socket_claim_focus (socket, FALSE);
805 gtk_socket_remove (GtkContainer *container,
808 GtkSocket *socket = GTK_SOCKET (container);
810 g_return_if_fail (child == socket->plug_widget);
812 _gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
816 gtk_socket_forall (GtkContainer *container,
817 gboolean include_internals,
818 GtkCallback callback,
819 gpointer callback_data)
821 GtkSocket *socket = GTK_SOCKET (container);
823 if (socket->plug_widget)
824 (* callback) (socket->plug_widget, callback_data);
828 * _gtk_socket_add_window:
830 * @socket: a #GtkSocket
831 * @xid: the native identifier for a window
832 * @need_reparent: whether the socket's plug's window needs to be
833 * reparented to the socket
835 * Adds a window to a GtkSocket.
838 _gtk_socket_add_window (GtkSocket *socket,
840 gboolean need_reparent)
842 GtkWidget *widget = GTK_WIDGET (socket);
843 GdkDisplay *display = gtk_widget_get_display (widget);
844 gpointer user_data = NULL;
846 socket->plug_window = gdk_window_lookup_for_display (display, xid);
848 if (socket->plug_window)
850 g_object_ref (socket->plug_window);
851 gdk_window_get_user_data (socket->plug_window, &user_data);
854 if (user_data) /* A widget's window in this process */
856 GtkWidget *child_widget = user_data;
858 if (!GTK_IS_PLUG (child_widget))
860 g_warning (G_STRLOC ": Can't add non-GtkPlug to GtkSocket");
861 socket->plug_window = NULL;
862 gdk_error_trap_pop ();
867 _gtk_plug_add_to_socket (GTK_PLUG (child_widget), socket);
869 else /* A foreign window */
872 GdkDragProtocol protocol;
874 gdk_error_trap_push ();
876 if (!socket->plug_window)
878 socket->plug_window = gdk_window_foreign_new_for_display (display, xid);
879 if (!socket->plug_window) /* was deleted before we could get it */
881 gdk_error_trap_pop ();
886 _gtk_socket_windowing_select_plug_window_input (socket);
888 if (gdk_error_trap_pop ())
890 g_object_unref (socket->plug_window);
891 socket->plug_window = NULL;
895 /* OK, we now will reliably get destroy notification on socket->plug_window */
897 gdk_error_trap_push ();
901 gdk_window_hide (socket->plug_window); /* Shouldn't actually be necessary for XEMBED, but just in case */
902 gdk_window_reparent (socket->plug_window, widget->window, 0, 0);
905 socket->have_size = FALSE;
907 _gtk_socket_windowing_embed_get_info (socket);
909 socket->need_map = socket->is_mapped;
911 if (gdk_drag_get_protocol_for_display (display, xid, &protocol))
912 gtk_drag_dest_set_proxy (GTK_WIDGET (socket), socket->plug_window,
915 gdk_display_sync (display);
916 gdk_error_trap_pop ();
918 gdk_window_add_filter (socket->plug_window,
919 _gtk_socket_windowing_filter_func,
922 /* Add a pointer to the socket on our toplevel window */
924 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
925 if (GTK_IS_WINDOW (toplevel))
926 gtk_window_add_embedded_xid (GTK_WINDOW (toplevel), xid);
928 _gtk_socket_windowing_embed_notify (socket);
930 socket_update_active (socket);
931 socket_update_focus_in (socket);
933 gtk_widget_queue_resize (GTK_WIDGET (socket));
936 if (socket->plug_window)
937 g_signal_emit (socket, socket_signals[PLUG_ADDED], 0);
941 * _gtk_socket_handle_map_request:
943 * @socket: a #GtkSocket
945 * Called from the GtkSocket backend when the plug has been mapped.
948 _gtk_socket_handle_map_request (GtkSocket *socket)
950 if (!socket->is_mapped)
952 socket->is_mapped = TRUE;
953 socket->need_map = TRUE;
955 gtk_widget_queue_resize (GTK_WIDGET (socket));
960 * _gtk_socket_unmap_notify:
962 * @socket: a #GtkSocket
964 * Called from the GtkSocket backend when the plug has been unmapped ???
967 _gtk_socket_unmap_notify (GtkSocket *socket)
969 if (socket->is_mapped)
971 socket->is_mapped = FALSE;
972 gtk_widget_queue_resize (GTK_WIDGET (socket));
977 * _gtk_socket_advance_toplevel_focus:
979 * @socket: a #GtkSocket
980 * @direction: a direction
982 * Called from the GtkSocket backend when the corresponding plug
983 * has told the socket to move the focus.
986 _gtk_socket_advance_toplevel_focus (GtkSocket *socket,
987 GtkDirectionType direction)
991 GtkContainer *container;
993 GtkWidget *old_focus_child;
996 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
1000 if (!gtk_widget_is_toplevel (toplevel) || GTK_IS_PLUG (toplevel))
1002 gtk_widget_child_focus (toplevel,direction);
1006 container = GTK_CONTAINER (toplevel);
1007 window = GTK_WINDOW (toplevel);
1008 bin = GTK_BIN (toplevel);
1010 /* This is a copy of gtk_window_focus(), modified so that we
1011 * can detect wrap-around.
1013 old_focus_child = container->focus_child;
1015 if (old_focus_child)
1017 if (gtk_widget_child_focus (old_focus_child, direction))
1020 /* We are allowed exactly one wrap-around per sequence of focus
1023 if (_gtk_socket_windowing_embed_get_focus_wrapped ())
1026 _gtk_socket_windowing_embed_set_focus_wrapped ();
1029 if (window->focus_widget)
1031 /* Wrapped off the end, clear the focus setting for the toplevel */
1032 parent = window->focus_widget->parent;
1035 gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1036 parent = GTK_WIDGET (parent)->parent;
1039 gtk_window_set_focus (GTK_WINDOW (container), NULL);
1042 /* Now try to focus the first widget in the window */
1045 if (gtk_widget_child_focus (bin->child, direction))
1050 #define __GTK_SOCKET_C__
1051 #include "gtkaliasdef.c"