This repository has been archived by the owner on Nov 17, 2020. It is now read-only.
/
gtksocket.c
1619 lines (1375 loc) · 45.3 KB
/
gtksocket.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* By Owen Taylor <otaylor@gtk.org> 98/4/4 */
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtksocketprivate.h"
#include <string.h>
#include "gtkmainprivate.h"
#include "gtkmarshalers.h"
#include "gtksizerequest.h"
#include "gtkplug.h"
#include "gtkprivate.h"
#include "gtkdnd.h"
#include "gtkdebug.h"
#include "gtkintl.h"
#include "gtkwidgetprivate.h"
#include <gdk/gdkx.h>
#include <gdk/gdkprivate.h>
#ifdef HAVE_XFIXES
#include <X11/extensions/Xfixes.h>
#endif
#include "gtkxembed.h"
/**
* SECTION:gtksocket
* @Short_description: Container for widgets from other processes
* @Title: GtkSocket
* @include: gtk/gtkx.h
* @See_also: #GtkPlug, <ulink url="http://www.freedesktop.org/Standards/xembed-spec">XEmbed</ulink>
*
* Together with #GtkPlug, #GtkSocket provides the ability to embed
* widgets from one process into another process in a fashion that
* is transparent to the user. One process creates a #GtkSocket widget
* and passes that widget's window ID to the other process, which then
* creates a #GtkPlug with that window ID. Any widgets contained in the
* #GtkPlug then will appear inside the first application's window.
*
* The socket's window ID is obtained by using gtk_socket_get_id().
* Before using this function, the socket must have been realized,
* and for hence, have been added to its parent.
*
* <example>
* <title>Obtaining the window ID of a socket.</title>
* <programlisting>
* GtkWidget *socket = gtk_socket_new (<!-- -->);
* gtk_widget_show (socket);
* gtk_container_add (GTK_CONTAINER (parent), socket);
*
* /* The following call is only necessary if one of
* * the ancestors of the socket is not yet visible.
* */
* gtk_widget_realize (socket);
* g_print ("The ID of the sockets window is %#x\n",
* gtk_socket_get_id (socket));
* </programlisting>
* </example>
*
* Note that if you pass the window ID of the socket to another
* process that will create a plug in the socket, you must make
* sure that the socket widget is not destroyed until that plug
* is created. Violating this rule will cause unpredictable
* consequences, the most likely consequence being that the plug
* will appear as a separate toplevel window. You can check if
* the plug has been created by using gtk_socket_get_plug_window().
* If it returns a non-%NULL value, then the plug has been
* successfully created inside of the socket.
*
* When GTK+ is notified that the embedded window has been destroyed,
* then it will destroy the socket as well. You should always,
* therefore, be prepared for your sockets to be destroyed at any
* time when the main event loop is running. To prevent this from
* happening, you can connect to the #GtkSocket::plug-removed signal.
*
* The communication between a #GtkSocket and a #GtkPlug follows the
* <ulink url="http://www.freedesktop.org/Standards/xembed-spec">XEmbed</ulink>
* protocol. This protocol has also been implemented in other toolkits,
* e.g. <application>Qt</application>, allowing the same level of
* integration when embedding a <application>Qt</application> widget
* in GTK or vice versa.
*
* <note>
* The #GtkPlug and #GtkSocket widgets are only available when GTK+
* is compiled for the X11 platform and %GDK_WINDOWING_X11 is defined.
* They can only be used on a #GdkX11Display. To use #GtkPlug and
* #GtkSocket, you need to include the <filename>gtk/gtkx.h</filename>
* header.
* </note>
*/
/* Forward declararations */
static void gtk_socket_finalize (GObject *object);
static void gtk_socket_notify (GObject *object,
GParamSpec *pspec);
static void gtk_socket_realize (GtkWidget *widget);
static void gtk_socket_unrealize (GtkWidget *widget);
static void gtk_socket_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_socket_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_socket_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_socket_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel);
static void gtk_socket_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
static gboolean gtk_socket_key_event (GtkWidget *widget,
GdkEventKey *event);
static gboolean gtk_socket_focus (GtkWidget *widget,
GtkDirectionType direction);
static void gtk_socket_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_socket_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_socket_add_window (GtkSocket *socket,
Window xid,
gboolean need_reparent);
static GdkFilterReturn gtk_socket_filter_func (GdkXEvent *gdk_xevent,
GdkEvent *event,
gpointer data);
static gboolean xembed_get_info (GdkWindow *gdk_window,
unsigned long *version,
unsigned long *flags);
/* From Tk */
#define EMBEDDED_APP_WANTS_FOCUS NotifyNormal+20
/* Local data */
typedef struct
{
guint accel_key;
GdkModifierType accel_mods;
} GrabbedKey;
enum {
PLUG_ADDED,
PLUG_REMOVED,
LAST_SIGNAL
};
static guint socket_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkSocket, gtk_socket, GTK_TYPE_CONTAINER)
static void
gtk_socket_finalize (GObject *object)
{
GtkSocket *socket = GTK_SOCKET (object);
GtkSocketPrivate *priv = socket->priv;
g_object_unref (priv->accel_group);
G_OBJECT_CLASS (gtk_socket_parent_class)->finalize (object);
}
static void
gtk_socket_class_init (GtkSocketClass *class)
{
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) class;
widget_class = (GtkWidgetClass*) class;
container_class = (GtkContainerClass*) class;
gobject_class->finalize = gtk_socket_finalize;
gobject_class->notify = gtk_socket_notify;
widget_class->realize = gtk_socket_realize;
widget_class->unrealize = gtk_socket_unrealize;
widget_class->get_preferred_width = gtk_socket_get_preferred_width;
widget_class->get_preferred_height = gtk_socket_get_preferred_height;
widget_class->size_allocate = gtk_socket_size_allocate;
widget_class->hierarchy_changed = gtk_socket_hierarchy_changed;
widget_class->grab_notify = gtk_socket_grab_notify;
widget_class->key_press_event = gtk_socket_key_event;
widget_class->key_release_event = gtk_socket_key_event;
widget_class->focus = gtk_socket_focus;
/* We don't want to show_all the in-process plug, if any.
*/
widget_class->show_all = gtk_widget_show;
container_class->remove = gtk_socket_remove;
container_class->forall = gtk_socket_forall;
/**
* GtkSocket::plug-added:
* @socket_: the object which received the signal
*
* This signal is emitted when a client is successfully
* added to the socket.
*/
socket_signals[PLUG_ADDED] =
g_signal_new (I_("plug-added"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSocketClass, plug_added),
NULL, NULL,
_gtk_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkSocket::plug-removed:
* @socket_: the object which received the signal
*
* This signal is emitted when a client is removed from the socket.
* The default action is to destroy the #GtkSocket widget, so if you
* want to reuse it you must add a signal handler that returns %TRUE.
*
* Return value: %TRUE to stop other handlers from being invoked.
*/
socket_signals[PLUG_REMOVED] =
g_signal_new (I_("plug-removed"),
G_OBJECT_CLASS_TYPE (class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkSocketClass, plug_removed),
_gtk_boolean_handled_accumulator, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
g_type_class_add_private (gobject_class, sizeof (GtkSocketPrivate));
}
static void
gtk_socket_init (GtkSocket *socket)
{
GtkSocketPrivate *priv;
priv = G_TYPE_INSTANCE_GET_PRIVATE (socket,
GTK_TYPE_SOCKET,
GtkSocketPrivate);
socket->priv = priv;
priv->request_width = 0;
priv->request_height = 0;
priv->current_width = 0;
priv->current_height = 0;
priv->plug_window = NULL;
priv->plug_widget = NULL;
priv->focus_in = FALSE;
priv->have_size = FALSE;
priv->need_map = FALSE;
priv->active = FALSE;
priv->accel_group = gtk_accel_group_new ();
g_object_set_data (G_OBJECT (priv->accel_group), I_("gtk-socket"), socket);
}
/**
* gtk_socket_new:
*
* Create a new empty #GtkSocket.
*
* Return value: the new #GtkSocket.
**/
GtkWidget*
gtk_socket_new (void)
{
GtkSocket *socket;
socket = g_object_new (GTK_TYPE_SOCKET, NULL);
return GTK_WIDGET (socket);
}
/**
* gtk_socket_add_id:
* @socket_: a #GtkSocket
* @window: the Window of a client participating in the XEMBED protocol.
*
* Adds an XEMBED client, such as a #GtkPlug, to the #GtkSocket. The
* client may be in the same process or in a different process.
*
* To embed a #GtkPlug in a #GtkSocket, you can either create the
* #GtkPlug with <literal>gtk_plug_new (0)</literal>, call
* gtk_plug_get_id() to get the window ID of the plug, and then pass that to the
* gtk_socket_add_id(), or you can call gtk_socket_get_id() to get the
* window ID for the socket, and call gtk_plug_new() passing in that
* ID.
*
* The #GtkSocket must have already be added into a toplevel window
* before you can make this call.
**/
void
gtk_socket_add_id (GtkSocket *socket,
Window window)
{
g_return_if_fail (GTK_IS_SOCKET (socket));
g_return_if_fail (_gtk_widget_get_anchored (GTK_WIDGET (socket)));
if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
gtk_widget_realize (GTK_WIDGET (socket));
gtk_socket_add_window (socket, window, TRUE);
}
/**
* gtk_socket_get_id:
* @socket_: a #GtkSocket.
*
* Gets the window ID of a #GtkSocket widget, which can then
* be used to create a client embedded inside the socket, for
* instance with gtk_plug_new().
*
* The #GtkSocket must have already be added into a toplevel window
* before you can make this call.
*
* Return value: the window ID for the socket
**/
Window
gtk_socket_get_id (GtkSocket *socket)
{
g_return_val_if_fail (GTK_IS_SOCKET (socket), 0);
g_return_val_if_fail (_gtk_widget_get_anchored (GTK_WIDGET (socket)), 0);
if (!gtk_widget_get_realized (GTK_WIDGET (socket)))
gtk_widget_realize (GTK_WIDGET (socket));
return GDK_WINDOW_XID (gtk_widget_get_window (GTK_WIDGET (socket)));
}
/**
* gtk_socket_get_plug_window:
* @socket_: a #GtkSocket.
*
* Retrieves the window of the plug. Use this to check if the plug has
* been created inside of the socket.
*
* Return value: (transfer none): the window of the plug if available, or %NULL
*
* Since: 2.14
**/
GdkWindow*
gtk_socket_get_plug_window (GtkSocket *socket)
{
g_return_val_if_fail (GTK_IS_SOCKET (socket), NULL);
return socket->priv->plug_window;
}
static void
gtk_socket_realize (GtkWidget *widget)
{
GtkAllocation allocation;
GtkSocket *socket = GTK_SOCKET (widget);
GdkWindow *window;
GdkWindowAttr attributes;
XWindowAttributes xattrs;
gint attributes_mask;
gtk_widget_set_realized (widget, TRUE);
gtk_widget_get_allocation (widget, &allocation);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = allocation.x;
attributes.y = allocation.y;
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.event_mask = GDK_FOCUS_CHANGE_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gtk_widget_set_window (widget, window);
gdk_window_set_user_data (window, socket);
gtk_style_context_set_background (gtk_widget_get_style_context (widget),
window);
XGetWindowAttributes (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
&xattrs);
/* Sooooo, it turns out that mozilla, as per the gtk2xt code selects
for input on the socket with a mask of 0x0fffff (for god knows why)
which includes ButtonPressMask causing a BadAccess if someone else
also selects for this. As per the client-side windows merge we always
normally selects for button press so we can emulate it on client
side children that selects for button press. However, we don't need
this for GtkSocket, so we unselect it here, fixing the crashes in
firefox. */
XSelectInput (GDK_WINDOW_XDISPLAY (window),
GDK_WINDOW_XID (window),
(xattrs.your_event_mask & ~ButtonPressMask) |
SubstructureNotifyMask | SubstructureRedirectMask);
gdk_window_add_filter (window,
gtk_socket_filter_func,
widget);
/* We sync here so that we make sure that if the XID for
* our window is passed to another application, SubstructureRedirectMask
* will be set by the time the other app creates its window.
*/
gdk_display_sync (gtk_widget_get_display (widget));
}
/**
* gtk_socket_end_embedding:
*
* @socket: a #GtkSocket
*
* Called to end the embedding of a plug in the socket.
*/
static void
gtk_socket_end_embedding (GtkSocket *socket)
{
GtkSocketPrivate *private = socket->priv;
g_object_unref (private->plug_window);
private->plug_window = NULL;
private->current_width = 0;
private->current_height = 0;
private->resize_count = 0;
gtk_accel_group_disconnect (private->accel_group, NULL);
}
static void
gtk_socket_unrealize (GtkWidget *widget)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
gtk_widget_set_realized (widget, FALSE);
if (private->plug_widget)
{
_gtk_plug_remove_from_socket (GTK_PLUG (private->plug_widget), socket);
}
else if (private->plug_window)
{
gtk_socket_end_embedding (socket);
}
GTK_WIDGET_CLASS (gtk_socket_parent_class)->unrealize (widget);
}
static void
gtk_socket_size_request (GtkSocket *socket)
{
GtkSocketPrivate *private = socket->priv;
XSizeHints hints;
long supplied;
gdk_error_trap_push ();
private->request_width = 1;
private->request_height = 1;
if (XGetWMNormalHints (GDK_WINDOW_XDISPLAY (private->plug_window),
GDK_WINDOW_XID (private->plug_window),
&hints, &supplied))
{
if (hints.flags & PMinSize)
{
private->request_width = MAX (hints.min_width, 1);
private->request_height = MAX (hints.min_height, 1);
}
else if (hints.flags & PBaseSize)
{
private->request_width = MAX (hints.base_width, 1);
private->request_height = MAX (hints.base_height, 1);
}
}
private->have_size = TRUE;
gdk_error_trap_pop_ignored ();
}
static void
gtk_socket_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
if (private->plug_widget)
{
gtk_widget_get_preferred_width (private->plug_widget, minimum, natural);
}
else
{
if (private->is_mapped && !private->have_size && private->plug_window)
gtk_socket_size_request (socket);
if (private->is_mapped && private->have_size)
*minimum = *natural = MAX (private->request_width, 1);
else
*minimum = *natural = 1;
}
}
static void
gtk_socket_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
if (private->plug_widget)
{
gtk_widget_get_preferred_height (private->plug_widget, minimum, natural);
}
else
{
if (private->is_mapped && !private->have_size && private->plug_window)
gtk_socket_size_request (socket);
if (private->is_mapped && private->have_size)
*minimum = *natural = MAX (private->request_height, 1);
else
*minimum = *natural = 1;
}
}
static void
gtk_socket_send_configure_event (GtkSocket *socket)
{
GtkAllocation allocation;
XConfigureEvent xconfigure;
gint x, y;
g_return_if_fail (socket->priv->plug_window != NULL);
memset (&xconfigure, 0, sizeof (xconfigure));
xconfigure.type = ConfigureNotify;
xconfigure.event = GDK_WINDOW_XID (socket->priv->plug_window);
xconfigure.window = GDK_WINDOW_XID (socket->priv->plug_window);
/* The ICCCM says that synthetic events should have root relative
* coordinates. We still aren't really ICCCM compliant, since
* we don't send events when the real toplevel is moved.
*/
gdk_error_trap_push ();
gdk_window_get_origin (socket->priv->plug_window, &x, &y);
gdk_error_trap_pop_ignored ();
gtk_widget_get_allocation (GTK_WIDGET(socket), &allocation);
xconfigure.x = x;
xconfigure.y = y;
xconfigure.width = allocation.width;
xconfigure.height = allocation.height;
xconfigure.border_width = 0;
xconfigure.above = None;
xconfigure.override_redirect = False;
gdk_error_trap_push ();
XSendEvent (GDK_WINDOW_XDISPLAY (socket->priv->plug_window),
GDK_WINDOW_XID (socket->priv->plug_window),
False, NoEventMask, (XEvent *)&xconfigure);
gdk_error_trap_pop_ignored ();
}
static void
gtk_socket_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
gtk_widget_set_allocation (widget, allocation);
if (gtk_widget_get_realized (widget))
{
gdk_window_move_resize (gtk_widget_get_window (widget),
allocation->x, allocation->y,
allocation->width, allocation->height);
if (private->plug_widget)
{
GtkAllocation child_allocation;
child_allocation.x = 0;
child_allocation.y = 0;
child_allocation.width = allocation->width;
child_allocation.height = allocation->height;
gtk_widget_size_allocate (private->plug_widget, &child_allocation);
}
else if (private->plug_window)
{
gdk_error_trap_push ();
if (allocation->width != private->current_width ||
allocation->height != private->current_height)
{
gdk_window_move_resize (private->plug_window,
0, 0,
allocation->width, allocation->height);
if (private->resize_count)
private->resize_count--;
GTK_NOTE (PLUGSOCKET,
g_message ("GtkSocket - allocated: %d %d",
allocation->width, allocation->height));
private->current_width = allocation->width;
private->current_height = allocation->height;
}
if (private->need_map)
{
gdk_window_show (private->plug_window);
private->need_map = FALSE;
}
while (private->resize_count)
{
gtk_socket_send_configure_event (socket);
private->resize_count--;
GTK_NOTE (PLUGSOCKET,
g_message ("GtkSocket - sending synthetic configure: %d %d",
allocation->width, allocation->height));
}
gdk_error_trap_pop_ignored ();
}
}
}
static void
gtk_socket_send_key_event (GtkSocket *socket,
GdkEvent *gdk_event,
gboolean mask_key_presses)
{
XKeyEvent xkey;
GdkScreen *screen = gdk_window_get_screen (socket->priv->plug_window);
memset (&xkey, 0, sizeof (xkey));
xkey.type = (gdk_event->type == GDK_KEY_PRESS) ? KeyPress : KeyRelease;
xkey.window = GDK_WINDOW_XID (socket->priv->plug_window);
xkey.root = GDK_WINDOW_XID (gdk_screen_get_root_window (screen));
xkey.subwindow = None;
xkey.time = gdk_event->key.time;
xkey.x = 0;
xkey.y = 0;
xkey.x_root = 0;
xkey.y_root = 0;
xkey.state = gdk_event->key.state;
xkey.keycode = gdk_event->key.hardware_keycode;
xkey.same_screen = True;/* FIXME ? */
gdk_error_trap_push ();
XSendEvent (GDK_WINDOW_XDISPLAY (socket->priv->plug_window),
GDK_WINDOW_XID (socket->priv->plug_window),
False,
(mask_key_presses ? KeyPressMask : NoEventMask),
(XEvent *)&xkey);
gdk_error_trap_pop_ignored ();
}
static gboolean
activate_key (GtkAccelGroup *accel_group,
GObject *acceleratable,
guint accel_key,
GdkModifierType accel_mods,
GrabbedKey *grabbed_key)
{
GdkEvent *gdk_event = gtk_get_current_event ();
GtkSocket *socket = g_object_get_data (G_OBJECT (accel_group), "gtk-socket");
gboolean retval = FALSE;
if (gdk_event && gdk_event->type == GDK_KEY_PRESS && socket->priv->plug_window)
{
gtk_socket_send_key_event (socket, gdk_event, FALSE);
retval = TRUE;
}
if (gdk_event)
gdk_event_free (gdk_event);
return retval;
}
static gboolean
find_accel_key (GtkAccelKey *key,
GClosure *closure,
gpointer data)
{
GrabbedKey *grabbed_key = data;
return (key->accel_key == grabbed_key->accel_key &&
key->accel_mods == grabbed_key->accel_mods);
}
/**
* gtk_socket_add_grabbed_key:
*
* @socket: a #GtkSocket
* @keyval: a key
* @modifiers: modifiers for the key
*
* Called from the GtkSocket platform-specific backend when the
* corresponding plug has told the socket to grab a key.
*/
static void
gtk_socket_add_grabbed_key (GtkSocket *socket,
guint keyval,
GdkModifierType modifiers)
{
GClosure *closure;
GrabbedKey *grabbed_key;
grabbed_key = g_new (GrabbedKey, 1);
grabbed_key->accel_key = keyval;
grabbed_key->accel_mods = modifiers;
if (gtk_accel_group_find (socket->priv->accel_group,
find_accel_key,
&grabbed_key))
{
g_warning ("GtkSocket: request to add already present grabbed key %u,%#x\n",
keyval, modifiers);
g_free (grabbed_key);
return;
}
closure = g_cclosure_new (G_CALLBACK (activate_key), grabbed_key, (GClosureNotify)g_free);
gtk_accel_group_connect (socket->priv->accel_group, keyval, modifiers, GTK_ACCEL_LOCKED,
closure);
}
/**
* gtk_socket_remove_grabbed_key:
*
* @socket: a #GtkSocket
* @keyval: a key
* @modifiers: modifiers for the key
*
* Called from the GtkSocket backend when the corresponding plug has
* told the socket to remove a key grab.
*/
static void
gtk_socket_remove_grabbed_key (GtkSocket *socket,
guint keyval,
GdkModifierType modifiers)
{
if (!gtk_accel_group_disconnect_key (socket->priv->accel_group, keyval, modifiers))
g_warning ("GtkSocket: request to remove non-present grabbed key %u,%#x\n",
keyval, modifiers);
}
static void
socket_update_focus_in (GtkSocket *socket)
{
GtkSocketPrivate *private = socket->priv;
gboolean focus_in = FALSE;
if (private->plug_window)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (gtk_widget_is_toplevel (toplevel) &&
gtk_window_has_toplevel_focus (GTK_WINDOW (toplevel)) &&
gtk_widget_is_focus (GTK_WIDGET (socket)))
focus_in = TRUE;
}
if (focus_in != private->focus_in)
{
private->focus_in = focus_in;
if (focus_in)
_gtk_xembed_send_focus_message (private->plug_window,
XEMBED_FOCUS_IN, XEMBED_FOCUS_CURRENT);
else
_gtk_xembed_send_message (private->plug_window,
XEMBED_FOCUS_OUT, 0, 0, 0);
}
}
static void
socket_update_active (GtkSocket *socket)
{
GtkSocketPrivate *private = socket->priv;
gboolean active = FALSE;
if (private->plug_window)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (socket));
if (gtk_widget_is_toplevel (toplevel) &&
gtk_window_is_active (GTK_WINDOW (toplevel)))
active = TRUE;
}
if (active != private->active)
{
private->active = active;
_gtk_xembed_send_message (private->plug_window,
active ? XEMBED_WINDOW_ACTIVATE : XEMBED_WINDOW_DEACTIVATE,
0, 0, 0);
}
}
static void
gtk_socket_hierarchy_changed (GtkWidget *widget,
GtkWidget *old_toplevel)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
if (toplevel && !GTK_IS_WINDOW (toplevel))
toplevel = NULL;
if (toplevel != private->toplevel)
{
if (private->toplevel)
{
gtk_window_remove_accel_group (GTK_WINDOW (private->toplevel), private->accel_group);
g_signal_handlers_disconnect_by_func (private->toplevel,
socket_update_focus_in,
socket);
g_signal_handlers_disconnect_by_func (private->toplevel,
socket_update_active,
socket);
}
private->toplevel = toplevel;
if (toplevel)
{
gtk_window_add_accel_group (GTK_WINDOW (private->toplevel), private->accel_group);
g_signal_connect_swapped (private->toplevel, "notify::has-toplevel-focus",
G_CALLBACK (socket_update_focus_in), socket);
g_signal_connect_swapped (private->toplevel, "notify::is-active",
G_CALLBACK (socket_update_active), socket);
}
socket_update_focus_in (socket);
socket_update_active (socket);
}
}
static void
gtk_socket_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkSocket *socket = GTK_SOCKET (widget);
if (!socket->priv->same_app)
_gtk_xembed_send_message (socket->priv->plug_window,
was_grabbed ? XEMBED_MODALITY_OFF : XEMBED_MODALITY_ON,
0, 0, 0);
}
static gboolean
gtk_socket_key_event (GtkWidget *widget,
GdkEventKey *event)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
if (gtk_widget_has_focus (widget) && private->plug_window && !private->plug_widget)
{
gtk_socket_send_key_event (socket, (GdkEvent *) event, FALSE);
return TRUE;
}
else
return FALSE;
}
static void
gtk_socket_notify (GObject *object,
GParamSpec *pspec)
{
if (strcmp (pspec->name, "is-focus") == 0)
socket_update_focus_in (GTK_SOCKET (object));
}
/**
* gtk_socket_claim_focus:
*
* @socket: a #GtkSocket
* @send_event: huh?
*
* Claims focus for the socket. XXX send_event?
*/
static void
gtk_socket_claim_focus (GtkSocket *socket,
gboolean send_event)
{
GtkWidget *widget = GTK_WIDGET (socket);
GtkSocketPrivate *private = socket->priv;
if (!send_event)
private->focus_in = TRUE; /* Otherwise, our notify handler will send FOCUS_IN */
/* Oh, the trickery... */
gtk_widget_set_can_focus (widget, TRUE);
gtk_widget_grab_focus (widget);
gtk_widget_set_can_focus (widget, FALSE);
}
static gboolean
gtk_socket_focus (GtkWidget *widget,
GtkDirectionType direction)
{
GtkSocket *socket = GTK_SOCKET (widget);
GtkSocketPrivate *private = socket->priv;
if (private->plug_widget)
return gtk_widget_child_focus (private->plug_widget, direction);
if (!gtk_widget_is_focus (widget))
{
gint detail = -1;
switch (direction)
{
case GTK_DIR_UP:
case GTK_DIR_LEFT:
case GTK_DIR_TAB_BACKWARD:
detail = XEMBED_FOCUS_LAST;
break;
case GTK_DIR_DOWN:
case GTK_DIR_RIGHT:
case GTK_DIR_TAB_FORWARD:
detail = XEMBED_FOCUS_FIRST;
break;
}
_gtk_xembed_send_focus_message (private->plug_window, XEMBED_FOCUS_IN, detail);
gtk_socket_claim_focus (socket, FALSE);
return TRUE;
}
else
return FALSE;
}
static void
gtk_socket_remove (GtkContainer *container,
GtkWidget *child)
{
GtkSocket *socket = GTK_SOCKET (container);
GtkSocketPrivate *private = socket->priv;
g_return_if_fail (child == private->plug_widget);
_gtk_plug_remove_from_socket (GTK_PLUG (private->plug_widget), socket);
}
static void
gtk_socket_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,