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 * @wid: the window ID of an existing toplevel window.
297 * Reparents a pre-existing toplevel window into a #GtkSocket. This is
298 * meant to embed clients that do not know about embedding into a
299 * #GtkSocket, however doing so is inherently unreliable, and using
300 * this function is not recommended.
302 * The #GtkSocket must have already be added into a toplevel window
303 * before you can make this call.
306 gtk_socket_steal (GtkSocket *socket,
309 g_return_if_fail (GTK_IS_SOCKET (socket));
310 g_return_if_fail (GTK_WIDGET_ANCHORED (socket));
312 if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
313 gtk_widget_realize (GTK_WIDGET (socket));
315 _gtk_socket_add_window (socket, wid, TRUE);
320 * @socket_: a #GtkSocket
321 * @window_id: the window ID of a client participating in the XEMBED protocol.
323 * Adds an XEMBED client, such as a #GtkPlug, to the #GtkSocket. The
324 * client may be in the same process or in a different process.
326 * To embed a #GtkPlug in a #GtkSocket, you can either create the
327 * #GtkPlug with <literal>gtk_plug_new (0)</literal>, call
328 * gtk_plug_get_id() to get the window ID of the plug, and then pass that to the
329 * gtk_socket_add_id(), or you can call gtk_socket_get_id() to get the
330 * window ID for the socket, and call gtk_plug_new() passing in that
333 * The #GtkSocket must have already be added into a toplevel window
334 * before you can make this call.
337 gtk_socket_add_id (GtkSocket *socket,
338 GdkNativeWindow window_id)
340 g_return_if_fail (GTK_IS_SOCKET (socket));
341 g_return_if_fail (GTK_WIDGET_ANCHORED (socket));
343 if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
344 gtk_widget_realize (GTK_WIDGET (socket));
346 _gtk_socket_add_window (socket, window_id, TRUE);
351 * @socket_: a #GtkSocket.
353 * Gets the window ID of a #GtkSocket widget, which can then
354 * be used to create a client embedded inside the socket, for
355 * instance with gtk_plug_new().
357 * The #GtkSocket must have already be added into a toplevel window
358 * before you can make this call.
360 * Return value: the window ID for the socket
363 gtk_socket_get_id (GtkSocket *socket)
365 g_return_val_if_fail (GTK_IS_SOCKET (socket), 0);
366 g_return_val_if_fail (GTK_WIDGET_ANCHORED (socket), 0);
368 if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
369 gtk_widget_realize (GTK_WIDGET (socket));
371 return _gtk_socket_windowing_get_id (socket);
375 * gtk_socket_get_plug_window:
376 * @socket_: a #GtkSocket.
378 * Retrieves the window of the plug. Use this to check if the plug has
379 * been created inside of the socket.
381 * Return value: the window of the plug if available, or %NULL
386 gtk_socket_get_plug_window (GtkSocket *socket)
388 g_return_val_if_fail (GTK_IS_SOCKET (socket), NULL);
390 return socket->plug_window;
394 gtk_socket_realize (GtkWidget *widget)
396 GtkSocket *socket = GTK_SOCKET (widget);
397 GdkWindowAttr attributes;
398 gint attributes_mask;
400 gtk_widget_set_realized (widget, TRUE);
402 attributes.window_type = GDK_WINDOW_CHILD;
403 attributes.x = widget->allocation.x;
404 attributes.y = widget->allocation.y;
405 attributes.width = widget->allocation.width;
406 attributes.height = widget->allocation.height;
407 attributes.wclass = GDK_INPUT_OUTPUT;
408 attributes.visual = gtk_widget_get_visual (widget);
409 attributes.colormap = gtk_widget_get_colormap (widget);
410 attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
412 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
414 widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
415 &attributes, attributes_mask);
416 gdk_window_set_user_data (widget->window, socket);
418 widget->style = gtk_style_attach (widget->style, widget->window);
419 gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
421 _gtk_socket_windowing_realize_window (socket);
423 gdk_window_add_filter (widget->window,
424 _gtk_socket_windowing_filter_func,
427 /* We sync here so that we make sure that if the XID for
428 * our window is passed to another application, SubstructureRedirectMask
429 * will be set by the time the other app creates its window.
431 gdk_display_sync (gtk_widget_get_display (widget));
435 * _gtk_socket_end_embedding:
437 * @socket: a #GtkSocket
439 * Called to end the embedding of a plug in the socket.
442 _gtk_socket_end_embedding (GtkSocket *socket)
444 GtkSocketPrivate *private = _gtk_socket_get_private (socket);
445 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
447 if (GTK_IS_WINDOW (toplevel))
448 _gtk_socket_windowing_end_embedding_toplevel (socket);
450 g_object_unref (socket->plug_window);
451 socket->plug_window = NULL;
452 socket->current_width = 0;
453 socket->current_height = 0;
454 private->resize_count = 0;
456 gtk_accel_group_disconnect (socket->accel_group, NULL);
460 gtk_socket_unrealize (GtkWidget *widget)
462 GtkSocket *socket = GTK_SOCKET (widget);
464 gtk_widget_set_realized (widget, FALSE);
466 if (socket->plug_widget)
468 _gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
470 else if (socket->plug_window)
472 _gtk_socket_end_embedding (socket);
475 GTK_WIDGET_CLASS (gtk_socket_parent_class)->unrealize (widget);
479 gtk_socket_size_request (GtkWidget *widget,
480 GtkRequisition *requisition)
482 GtkSocket *socket = GTK_SOCKET (widget);
484 if (socket->plug_widget)
486 gtk_widget_size_request (socket->plug_widget, requisition);
490 if (socket->is_mapped && !socket->have_size && socket->plug_window)
491 _gtk_socket_windowing_size_request (socket);
493 if (socket->is_mapped && socket->have_size)
495 requisition->width = MAX (socket->request_width, 1);
496 requisition->height = MAX (socket->request_height, 1);
500 requisition->width = 1;
501 requisition->height = 1;
507 gtk_socket_size_allocate (GtkWidget *widget,
508 GtkAllocation *allocation)
510 GtkSocket *socket = GTK_SOCKET (widget);
512 widget->allocation = *allocation;
513 if (gtk_widget_get_realized (widget))
515 gdk_window_move_resize (widget->window,
516 allocation->x, allocation->y,
517 allocation->width, allocation->height);
519 if (socket->plug_widget)
521 GtkAllocation child_allocation;
523 child_allocation.x = 0;
524 child_allocation.y = 0;
525 child_allocation.width = allocation->width;
526 child_allocation.height = allocation->height;
528 gtk_widget_size_allocate (socket->plug_widget, &child_allocation);
530 else if (socket->plug_window)
532 GtkSocketPrivate *private = _gtk_socket_get_private (socket);
534 gdk_error_trap_push ();
536 if (allocation->width != socket->current_width ||
537 allocation->height != socket->current_height)
539 gdk_window_move_resize (socket->plug_window,
541 allocation->width, allocation->height);
542 if (private->resize_count)
543 private->resize_count--;
545 GTK_NOTE (PLUGSOCKET,
546 g_message ("GtkSocket - allocated: %d %d",
547 allocation->width, allocation->height));
548 socket->current_width = allocation->width;
549 socket->current_height = allocation->height;
552 if (socket->need_map)
554 gdk_window_show (socket->plug_window);
555 socket->need_map = FALSE;
558 while (private->resize_count)
560 _gtk_socket_windowing_send_configure_event (socket);
561 private->resize_count--;
562 GTK_NOTE (PLUGSOCKET,
563 g_message ("GtkSocket - sending synthetic configure: %d %d",
564 allocation->width, allocation->height));
567 gdk_display_sync (gtk_widget_get_display (widget));
568 gdk_error_trap_pop ();
574 activate_key (GtkAccelGroup *accel_group,
575 GObject *acceleratable,
577 GdkModifierType accel_mods,
578 GrabbedKey *grabbed_key)
580 GdkEvent *gdk_event = gtk_get_current_event ();
582 GtkSocket *socket = g_object_get_data (G_OBJECT (accel_group), "gtk-socket");
583 gboolean retval = FALSE;
585 if (gdk_event && gdk_event->type == GDK_KEY_PRESS && socket->plug_window)
587 _gtk_socket_windowing_send_key_event (socket, gdk_event, TRUE);
592 gdk_event_free (gdk_event);
598 find_accel_key (GtkAccelKey *key,
602 GrabbedKey *grabbed_key = data;
604 return (key->accel_key == grabbed_key->accel_key &&
605 key->accel_mods == grabbed_key->accel_mods);
609 * _gtk_socket_add_grabbed_key:
611 * @socket: a #GtkSocket
613 * @modifiers: modifiers for the key
615 * Called from the GtkSocket platform-specific backend when the
616 * corresponding plug has told the socket to grab a key.
619 _gtk_socket_add_grabbed_key (GtkSocket *socket,
621 GdkModifierType modifiers)
624 GrabbedKey *grabbed_key;
626 grabbed_key = g_new (GrabbedKey, 1);
628 grabbed_key->accel_key = keyval;
629 grabbed_key->accel_mods = modifiers;
631 if (gtk_accel_group_find (socket->accel_group,
635 g_warning ("GtkSocket: request to add already present grabbed key %u,%#x\n",
637 g_free (grabbed_key);
641 closure = g_cclosure_new (G_CALLBACK (activate_key), grabbed_key, (GClosureNotify)g_free);
643 gtk_accel_group_connect (socket->accel_group, keyval, modifiers, GTK_ACCEL_LOCKED,
648 * _gtk_socket_remove_grabbed_key:
650 * @socket: a #GtkSocket
652 * @modifiers: modifiers for the key
654 * Called from the GtkSocket backend when the corresponding plug has
655 * told the socket to remove a key grab.
658 _gtk_socket_remove_grabbed_key (GtkSocket *socket,
660 GdkModifierType modifiers)
662 if (!gtk_accel_group_disconnect_key (socket->accel_group, keyval, modifiers))
663 g_warning ("GtkSocket: request to remove non-present grabbed key %u,%#x\n",
668 socket_update_focus_in (GtkSocket *socket)
670 gboolean focus_in = FALSE;
672 if (socket->plug_window)
674 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
676 if (gtk_widget_is_toplevel (toplevel) &&
677 GTK_WINDOW (toplevel)->has_toplevel_focus &&
678 gtk_widget_is_focus (GTK_WIDGET (socket)))
682 if (focus_in != socket->focus_in)
684 socket->focus_in = focus_in;
686 _gtk_socket_windowing_focus_change (socket, focus_in);
691 socket_update_active (GtkSocket *socket)
693 gboolean active = FALSE;
695 if (socket->plug_window)
697 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
699 if (gtk_widget_is_toplevel (toplevel) &&
700 GTK_WINDOW (toplevel)->is_active)
704 if (active != socket->active)
706 socket->active = active;
708 _gtk_socket_windowing_update_active (socket, active);
713 gtk_socket_hierarchy_changed (GtkWidget *widget,
714 GtkWidget *old_toplevel)
716 GtkSocket *socket = GTK_SOCKET (widget);
717 GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
719 if (toplevel && !GTK_IS_WINDOW (toplevel))
722 if (toplevel != socket->toplevel)
724 if (socket->toplevel)
726 gtk_window_remove_accel_group (GTK_WINDOW (socket->toplevel), socket->accel_group);
727 g_signal_handlers_disconnect_by_func (socket->toplevel,
728 socket_update_focus_in,
730 g_signal_handlers_disconnect_by_func (socket->toplevel,
731 socket_update_active,
735 socket->toplevel = toplevel;
739 gtk_window_add_accel_group (GTK_WINDOW (socket->toplevel), socket->accel_group);
740 g_signal_connect_swapped (socket->toplevel, "notify::has-toplevel-focus",
741 G_CALLBACK (socket_update_focus_in), socket);
742 g_signal_connect_swapped (socket->toplevel, "notify::is-active",
743 G_CALLBACK (socket_update_active), socket);
746 socket_update_focus_in (socket);
747 socket_update_active (socket);
752 gtk_socket_grab_notify (GtkWidget *widget,
753 gboolean was_grabbed)
755 GtkSocket *socket = GTK_SOCKET (widget);
757 if (!socket->same_app)
758 _gtk_socket_windowing_update_modality (socket, !was_grabbed);
762 gtk_socket_key_event (GtkWidget *widget,
765 GtkSocket *socket = GTK_SOCKET (widget);
767 if (gtk_widget_has_focus (widget) && socket->plug_window && !socket->plug_widget)
769 _gtk_socket_windowing_send_key_event (socket, (GdkEvent *) event, FALSE);
778 gtk_socket_notify (GObject *object,
781 if (!strcmp (pspec->name, "is-focus"))
783 socket_update_focus_in (GTK_SOCKET (object));
787 * _gtk_socket_claim_focus:
789 * @socket: a #GtkSocket
792 * Claims focus for the socket. XXX send_event?
795 _gtk_socket_claim_focus (GtkSocket *socket,
798 GtkWidget *widget = GTK_WIDGET (socket);
801 socket->focus_in = TRUE; /* Otherwise, our notify handler will send FOCUS_IN */
803 /* Oh, the trickery... */
805 gtk_widget_set_can_focus (widget, TRUE);
806 gtk_widget_grab_focus (widget);
807 gtk_widget_set_can_focus (widget, FALSE);
811 gtk_socket_focus (GtkWidget *widget,
812 GtkDirectionType direction)
814 GtkSocket *socket = GTK_SOCKET (widget);
816 if (socket->plug_widget)
817 return gtk_widget_child_focus (socket->plug_widget, direction);
819 if (!gtk_widget_is_focus (widget))
821 _gtk_socket_windowing_focus (socket, direction);
822 _gtk_socket_claim_focus (socket, FALSE);
831 gtk_socket_remove (GtkContainer *container,
834 GtkSocket *socket = GTK_SOCKET (container);
836 g_return_if_fail (child == socket->plug_widget);
838 _gtk_plug_remove_from_socket (GTK_PLUG (socket->plug_widget), socket);
842 gtk_socket_forall (GtkContainer *container,
843 gboolean include_internals,
844 GtkCallback callback,
845 gpointer callback_data)
847 GtkSocket *socket = GTK_SOCKET (container);
849 if (socket->plug_widget)
850 (* callback) (socket->plug_widget, callback_data);
854 * _gtk_socket_add_window:
856 * @socket: a #GtkSocket
857 * @xid: the native identifier for a window
858 * @need_reparent: whether the socket's plug's window needs to be
859 * reparented to the socket
861 * Adds a window to a GtkSocket.
864 _gtk_socket_add_window (GtkSocket *socket,
866 gboolean need_reparent)
868 GtkWidget *widget = GTK_WIDGET (socket);
869 GdkDisplay *display = gtk_widget_get_display (widget);
870 gpointer user_data = NULL;
872 socket->plug_window = gdk_window_lookup_for_display (display, xid);
874 if (socket->plug_window)
876 g_object_ref (socket->plug_window);
877 gdk_window_get_user_data (socket->plug_window, &user_data);
880 if (user_data) /* A widget's window in this process */
882 GtkWidget *child_widget = user_data;
884 if (!GTK_IS_PLUG (child_widget))
886 g_warning (G_STRLOC ": Can't add non-GtkPlug to GtkSocket");
887 socket->plug_window = NULL;
888 gdk_error_trap_pop ();
893 _gtk_plug_add_to_socket (GTK_PLUG (child_widget), socket);
895 else /* A foreign window */
898 GdkDragProtocol protocol;
900 gdk_error_trap_push ();
902 if (!socket->plug_window)
904 socket->plug_window = gdk_window_foreign_new_for_display (display, xid);
905 if (!socket->plug_window) /* was deleted before we could get it */
907 gdk_error_trap_pop ();
912 _gtk_socket_windowing_select_plug_window_input (socket);
914 if (gdk_error_trap_pop ())
916 g_object_unref (socket->plug_window);
917 socket->plug_window = NULL;
921 /* OK, we now will reliably get destroy notification on socket->plug_window */
923 gdk_error_trap_push ();
927 gdk_window_hide (socket->plug_window); /* Shouldn't actually be necessary for XEMBED, but just in case */
928 gdk_window_reparent (socket->plug_window, widget->window, 0, 0);
931 socket->have_size = FALSE;
933 _gtk_socket_windowing_embed_get_info (socket);
935 socket->need_map = socket->is_mapped;
937 if (gdk_drag_get_protocol_for_display (display, xid, &protocol))
938 gtk_drag_dest_set_proxy (GTK_WIDGET (socket), socket->plug_window,
941 gdk_display_sync (display);
942 gdk_error_trap_pop ();
944 gdk_window_add_filter (socket->plug_window,
945 _gtk_socket_windowing_filter_func,
948 /* Add a pointer to the socket on our toplevel window */
950 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
951 if (GTK_IS_WINDOW (toplevel))
952 gtk_window_add_embedded_xid (GTK_WINDOW (toplevel), xid);
954 _gtk_socket_windowing_embed_notify (socket);
956 socket_update_active (socket);
957 socket_update_focus_in (socket);
959 gtk_widget_queue_resize (GTK_WIDGET (socket));
962 if (socket->plug_window)
963 g_signal_emit (socket, socket_signals[PLUG_ADDED], 0);
967 * _gtk_socket_handle_map_request:
969 * @socket: a #GtkSocket
971 * Called from the GtkSocket backend when the plug has been mapped.
974 _gtk_socket_handle_map_request (GtkSocket *socket)
976 if (!socket->is_mapped)
978 socket->is_mapped = TRUE;
979 socket->need_map = TRUE;
981 gtk_widget_queue_resize (GTK_WIDGET (socket));
986 * _gtk_socket_unmap_notify:
988 * @socket: a #GtkSocket
990 * Called from the GtkSocket backend when the plug has been unmapped ???
993 _gtk_socket_unmap_notify (GtkSocket *socket)
995 if (socket->is_mapped)
997 socket->is_mapped = FALSE;
998 gtk_widget_queue_resize (GTK_WIDGET (socket));
1003 * _gtk_socket_advance_toplevel_focus:
1005 * @socket: a #GtkSocket
1006 * @direction: a direction
1008 * Called from the GtkSocket backend when the corresponding plug
1009 * has told the socket to move the focus.
1012 _gtk_socket_advance_toplevel_focus (GtkSocket *socket,
1013 GtkDirectionType direction)
1017 GtkContainer *container;
1018 GtkWidget *toplevel;
1019 GtkWidget *old_focus_child;
1022 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
1026 if (!gtk_widget_is_toplevel (toplevel) || GTK_IS_PLUG (toplevel))
1028 gtk_widget_child_focus (toplevel,direction);
1032 container = GTK_CONTAINER (toplevel);
1033 window = GTK_WINDOW (toplevel);
1034 bin = GTK_BIN (toplevel);
1036 /* This is a copy of gtk_window_focus(), modified so that we
1037 * can detect wrap-around.
1039 old_focus_child = container->focus_child;
1041 if (old_focus_child)
1043 if (gtk_widget_child_focus (old_focus_child, direction))
1046 /* We are allowed exactly one wrap-around per sequence of focus
1049 if (_gtk_socket_windowing_embed_get_focus_wrapped ())
1052 _gtk_socket_windowing_embed_set_focus_wrapped ();
1055 if (window->focus_widget)
1057 /* Wrapped off the end, clear the focus setting for the toplevel */
1058 parent = window->focus_widget->parent;
1061 gtk_container_set_focus_child (GTK_CONTAINER (parent), NULL);
1062 parent = GTK_WIDGET (parent)->parent;
1065 gtk_window_set_focus (GTK_WINDOW (container), NULL);
1068 /* Now try to focus the first widget in the window */
1071 if (gtk_widget_child_focus (bin->child, direction))
1076 #define __GTK_SOCKET_C__
1077 #include "gtkaliasdef.c"