1 /* GDK - The GIMP Drawing Kit
4 * Copyright 2001 Sun Microsystems Inc.
5 * Copyright (C) 2004 Nokia Corporation
7 * Erwann Chenede <erwann.chenede@sun.com>
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Library General Public
11 * License as published by the Free Software Foundation; either
12 * version 2 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Library General Public License for more details.
19 * You should have received a copy of the GNU Library General Public
20 * License along with this library; if not, write to the
21 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 * Boston, MA 02111-1307, USA.
34 #include "gdkdisplay.h"
35 #include "gdkdisplay-x11.h"
36 #include "gdkscreen.h"
37 #include "gdkscreen-x11.h"
38 #include "gdkinternals.h"
39 #include "gdkinputprivate.h"
40 #include "xsettings-client.h"
42 #include <X11/Xatom.h>
45 #include <X11/XKBlib.h>
49 #include <X11/extensions/Xfixes.h>
52 static void gdk_display_x11_class_init (GdkDisplayX11Class *class);
53 static void gdk_display_x11_dispose (GObject *object);
54 static void gdk_display_x11_finalize (GObject *object);
57 static void gdk_internal_connection_watch (Display *display,
61 XPointer *watch_data);
62 #endif /* HAVE_X11R6 */
64 static gpointer parent_class = NULL;
66 /* Note that we never *directly* use WM_LOCALE_NAME, WM_PROTOCOLS,
67 * but including them here has the side-effect of getting them
68 * into the internal Xlib cache
70 static const char *const precache_atoms[] = {
84 "_NET_WM_STATE_STICKY",
85 "_NET_WM_STATE_MAXIMIZED_VERT",
86 "_NET_WM_STATE_MAXIMIZED_HORZ",
87 "_NET_WM_STATE_FULLSCREEN",
88 "_NET_WM_SYNC_REQUEST",
89 "_NET_WM_SYNC_REQUEST_COUNTER",
90 "_NET_WM_WINDOW_TYPE",
91 "_NET_WM_WINDOW_TYPE_NORMAL",
96 _gdk_display_x11_get_type (void)
98 static GType object_type = 0;
102 static const GTypeInfo object_info =
104 sizeof (GdkDisplayX11Class),
105 (GBaseInitFunc) NULL,
106 (GBaseFinalizeFunc) NULL,
107 (GClassInitFunc) gdk_display_x11_class_init,
108 NULL, /* class_finalize */
109 NULL, /* class_data */
110 sizeof (GdkDisplayX11),
112 (GInstanceInitFunc) NULL,
115 object_type = g_type_register_static (GDK_TYPE_DISPLAY,
124 gdk_display_x11_class_init (GdkDisplayX11Class * class)
126 GObjectClass *object_class = G_OBJECT_CLASS (class);
128 object_class->dispose = gdk_display_x11_dispose;
129 object_class->finalize = gdk_display_x11_finalize;
131 parent_class = g_type_class_peek_parent (class);
137 * @display_name: the name of the display to open
138 * @returns: a #GdkDisplay, or %NULL if the display
139 * could not be opened.
146 gdk_display_open (const gchar *display_name)
150 GdkDisplayX11 *display_x11;
154 const char *sm_client_id;
156 XClassHint *class_hint;
163 xdisplay = XOpenDisplay (display_name);
167 display = g_object_new (GDK_TYPE_DISPLAY_X11, NULL);
168 display_x11 = GDK_DISPLAY_X11 (display);
170 display_x11->use_xshm = TRUE;
171 display_x11->xdisplay = xdisplay;
174 /* Set up handlers for Xlib internal connections */
175 XAddConnectionWatch (xdisplay, gdk_internal_connection_watch, NULL);
176 #endif /* HAVE_X11R6 */
178 /* initialize the display's screens */
179 display_x11->screens = g_new (GdkScreen *, ScreenCount (display_x11->xdisplay));
180 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
181 display_x11->screens[i] = _gdk_x11_screen_new (display, i);
183 /* We need to initialize events after we have the screen
184 * structures in places
186 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
187 _gdk_x11_events_init_screen (display_x11->screens[i]);
189 /*set the default screen */
190 display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)];
192 attr.window_type = GDK_WINDOW_TOPLEVEL;
193 attr.wclass = GDK_INPUT_OUTPUT;
200 display_x11->leader_gdk_window = gdk_window_new (GDK_SCREEN_X11 (display_x11->default_screen)->root_window,
201 &attr, GDK_WA_X | GDK_WA_Y);
202 (_gdk_x11_window_get_toplevel (display_x11->leader_gdk_window))->is_leader = TRUE;
204 display_x11->leader_window = GDK_WINDOW_XID (display_x11->leader_gdk_window);
206 display_x11->leader_window_title_set = FALSE;
208 display_x11->have_render = GDK_UNKNOWN;
211 if (XFixesQueryExtension (display_x11->xdisplay,
212 &display_x11->xfixes_event_base,
215 display_x11->have_xfixes = TRUE;
217 gdk_x11_register_standard_event_type (display,
218 display_x11->xfixes_event_base,
223 display_x11->have_xfixes = FALSE;
225 if (_gdk_synchronize)
226 XSynchronize (display_x11->xdisplay, True);
228 _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms));
230 class_hint = XAllocClassHint();
231 class_hint->res_name = g_get_prgname ();
233 class_hint->res_class = (char *)gdk_get_program_class ();
235 /* XmbSetWMProperties sets the RESOURCE_NAME environment variable
236 * from argv[0], so we just synthesize an argument array here.
239 argv[0] = g_get_prgname ();
241 XmbSetWMProperties (display_x11->xdisplay,
242 display_x11->leader_window,
243 NULL, NULL, argv, argc, NULL, NULL,
247 sm_client_id = _gdk_get_sm_client_id ();
249 _gdk_windowing_display_set_sm_client_id (display, sm_client_id);
252 XChangeProperty (display_x11->xdisplay,
253 display_x11->leader_window,
254 gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID"),
255 XA_CARDINAL, 32, PropModeReplace, (guchar *) & pid, 1);
257 /* We don't yet know a valid time. */
258 display_x11->user_time = 0;
262 gint xkb_major = XkbMajorVersion;
263 gint xkb_minor = XkbMinorVersion;
264 if (XkbLibraryVersion (&xkb_major, &xkb_minor))
266 xkb_major = XkbMajorVersion;
267 xkb_minor = XkbMinorVersion;
269 if (XkbQueryExtension (display_x11->xdisplay,
270 NULL, &display_x11->xkb_event_type, NULL,
271 &xkb_major, &xkb_minor))
273 Bool detectable_autorepeat_supported;
275 display_x11->use_xkb = TRUE;
277 XkbSelectEvents (display_x11->xdisplay,
279 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask,
280 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask);
282 XkbSetDetectableAutoRepeat (display_x11->xdisplay,
284 &detectable_autorepeat_supported);
286 GDK_NOTE (MISC, g_message ("Detectable autorepeat %s.",
287 detectable_autorepeat_supported ?
288 "supported" : "not supported"));
290 display_x11->have_xkb_autorepeat = detectable_autorepeat_supported;
296 display_x11->use_sync = FALSE;
300 int error_base, event_base;
302 if (XSyncQueryExtension (display_x11->xdisplay,
303 &event_base, &error_base) &&
304 XSyncInitialize (display_x11->xdisplay,
306 display_x11->use_sync = TRUE;
310 _gdk_windowing_image_init (display);
311 _gdk_events_init (display);
312 _gdk_input_init (display);
313 _gdk_dnd_init (display);
315 g_signal_emit_by_name (gdk_display_manager_get(),
316 "display_opened", display);
323 * XLib internal connection handling
325 typedef struct _GdkInternalConnection GdkInternalConnection;
327 struct _GdkInternalConnection
335 process_internal_connection (GIOChannel *gioc,
339 GdkInternalConnection *connection = (GdkInternalConnection *)data;
341 GDK_THREADS_ENTER ();
343 XProcessInternalConnection ((Display*)connection->display, connection->fd);
345 GDK_THREADS_LEAVE ();
350 static GdkInternalConnection *
351 gdk_add_connection_handler (Display *display,
354 GIOChannel *io_channel;
355 GdkInternalConnection *connection;
357 connection = g_new (GdkInternalConnection, 1);
360 connection->display = display;
362 io_channel = g_io_channel_unix_new (fd);
364 connection->source = g_io_create_watch (io_channel, G_IO_IN);
365 g_source_set_callback (connection->source,
366 (GSourceFunc)process_internal_connection, connection, NULL);
367 g_source_attach (connection->source, NULL);
369 g_io_channel_unref (io_channel);
375 gdk_remove_connection_handler (GdkInternalConnection *connection)
377 g_source_destroy (connection->source);
382 gdk_internal_connection_watch (Display *display,
386 XPointer *watch_data)
389 *watch_data = (XPointer)gdk_add_connection_handler (display, fd);
391 gdk_remove_connection_handler ((GdkInternalConnection *)*watch_data);
393 #endif /* HAVE_X11R6 */
396 * gdk_display_get_name:
397 * @display: a #GdkDisplay
399 * Gets the name of the display.
401 * Returns: a string representing the display name. This string is owned
402 * by GDK and should not be modified or freed.
406 G_CONST_RETURN gchar *
407 gdk_display_get_name (GdkDisplay * display)
409 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
411 return (gchar *) DisplayString (GDK_DISPLAY_X11 (display)->xdisplay);
415 * gdk_display_get_n_screens:
416 * @display: a #GdkDisplay
418 * Gets the number of screen managed by the @display.
420 * Returns: number of screens.
425 gdk_display_get_n_screens (GdkDisplay * display)
427 g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
429 return ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay);
433 * gdk_display_get_screen:
434 * @display: a #GdkDisplay
435 * @screen_num: the screen number
437 * Returns a screen object for one of the screens of the display.
439 * Returns: the #GdkScreen object
444 gdk_display_get_screen (GdkDisplay * display, gint screen_num)
446 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
447 g_return_val_if_fail (ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay) > screen_num, NULL);
449 return GDK_DISPLAY_X11 (display)->screens[screen_num];
453 * gdk_display_get_default_screen:
454 * @display: a #GdkDisplay
456 * Get the default #GdkScreen for @display.
458 * Returns: the default #GdkScreen object for @display
463 gdk_display_get_default_screen (GdkDisplay * display)
465 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
467 return GDK_DISPLAY_X11 (display)->default_screen;
471 _gdk_x11_display_is_root_window (GdkDisplay *display,
474 GdkDisplayX11 *display_x11;
477 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
479 display_x11 = GDK_DISPLAY_X11 (display);
481 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
483 if (GDK_SCREEN_XROOTWIN (display_x11->screens[i]) == xroot_window)
490 * gdk_display_pointer_ungrab:
491 * @display: a #GdkDisplay.
492 * @time_: a timestap (e.g. GDK_CURRENT_TIME).
494 * Release any pointer grab.
499 gdk_display_pointer_ungrab (GdkDisplay *display,
504 g_return_if_fail (GDK_IS_DISPLAY (display));
506 xdisplay = GDK_DISPLAY_XDISPLAY (display);
508 _gdk_input_ungrab_pointer (display, time);
509 XUngrabPointer (xdisplay, time);
512 GDK_DISPLAY_X11 (display)->pointer_xgrab_window = NULL;
516 * gdk_display_pointer_is_grabbed:
517 * @display: a #GdkDisplay
519 * Test if the pointer is grabbed.
521 * Returns: %TRUE if an active X pointer grab is in effect
526 gdk_display_pointer_is_grabbed (GdkDisplay * display)
528 g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
530 return (GDK_DISPLAY_X11 (display)->pointer_xgrab_window != NULL);
534 * gdk_display_keyboard_ungrab:
535 * @display: a #GdkDisplay.
536 * @time_: a timestap (e.g #GDK_CURRENT_TIME).
538 * Release any keyboard grab
543 gdk_display_keyboard_ungrab (GdkDisplay *display,
548 g_return_if_fail (GDK_IS_DISPLAY (display));
550 xdisplay = GDK_DISPLAY_XDISPLAY (display);
552 XUngrabKeyboard (xdisplay, time);
555 GDK_DISPLAY_X11 (display)->keyboard_xgrab_window = NULL;
560 * @display: a #GdkDisplay
562 * Emits a short beep on @display
567 gdk_display_beep (GdkDisplay * display)
569 g_return_if_fail (GDK_IS_DISPLAY (display));
571 XBell (GDK_DISPLAY_XDISPLAY (display), 0);
576 * @display: a #GdkDisplay
578 * Flushes any requests queued for the windowing system and waits until all
579 * requests have been handled. This is often used for making sure that the
580 * display is synchronized with the current state of the program. Calling
581 * gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
582 * generated from earlier requests are handled before the error trap is
585 * This is most useful for X11. On windowing systems where requests are
586 * handled synchronously, this function will do nothing.
591 gdk_display_sync (GdkDisplay * display)
593 g_return_if_fail (GDK_IS_DISPLAY (display));
595 XSync (GDK_DISPLAY_XDISPLAY (display), False);
600 * @display: a #GdkDisplay
602 * Flushes any requests queued for the windowing system; this happens automatically
603 * when the main loop blocks waiting for new events, but if your application
604 * is drawing without returning control to the main loop, you may need
605 * to call this function explicitely. A common case where this function
606 * needs to be called is when an application is executing drawing commands
607 * from a thread other than the thread where the main loop is running.
609 * This is most useful for X11. On windowing systems where requests are
610 * handled synchronously, this function will do nothing.
615 gdk_display_flush (GdkDisplay *display)
617 g_return_if_fail (GDK_IS_DISPLAY (display));
619 if (!display->closed)
620 XFlush (GDK_DISPLAY_XDISPLAY (display));
624 * gdk_display_get_default_group:
625 * @display: a #GdkDisplay
627 * Returns the default group leader window for all toplevel windows
628 * on @display. This window is implicitly created by GDK.
629 * See gdk_window_set_group().
631 * Return value: The default group leader window for @display
635 GdkWindow *gdk_display_get_default_group (GdkDisplay *display)
637 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
639 return GDK_DISPLAY_X11 (display)->leader_gdk_window;
643 * gdk_x11_display_grab:
644 * @display: a #GdkDisplay
646 * Call XGrabServer() on @display.
647 * To ungrab the display again, use gdk_x11_display_ungrab().
649 * gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested.
654 gdk_x11_display_grab (GdkDisplay * display)
656 GdkDisplayX11 *display_x11;
658 g_return_if_fail (GDK_IS_DISPLAY (display));
660 display_x11 = GDK_DISPLAY_X11 (display);
662 if (display_x11->grab_count == 0)
663 XGrabServer (display_x11->xdisplay);
664 display_x11->grab_count++;
668 * gdk_x11_display_ungrab:
669 * @display: a #GdkDisplay
671 * Ungrab @display after it has been grabbed with
672 * gdk_x11_display_grab().
677 gdk_x11_display_ungrab (GdkDisplay * display)
679 GdkDisplayX11 *display_x11;
681 g_return_if_fail (GDK_IS_DISPLAY (display));
683 display_x11 = GDK_DISPLAY_X11 (display);;
684 g_return_if_fail (display_x11->grab_count > 0);
686 display_x11->grab_count--;
687 if (display_x11->grab_count == 0)
689 XUngrabServer (display_x11->xdisplay);
690 XFlush (display_x11->xdisplay);
695 gdk_display_x11_dispose (GObject *object)
697 GdkDisplayX11 *display_x11;
700 display_x11 = GDK_DISPLAY_X11 (object);
702 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
703 _gdk_screen_close (display_x11->screens[i]);
705 g_source_destroy (display_x11->event_source);
707 XCloseDisplay (display_x11->xdisplay);
708 display_x11->xdisplay = NULL;
710 G_OBJECT_CLASS (parent_class)->dispose (object);
714 gdk_display_x11_finalize (GObject *object)
716 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (object);
719 /* FIXME need to write GdkKeymap finalize fct
720 g_object_unref (display_x11->keymap);
723 if (display_x11->motif_target_lists)
725 for (i = 0; i < display_x11->motif_n_target_lists; i++)
726 g_list_free (display_x11->motif_target_lists[i]);
727 g_free (display_x11->motif_target_lists);
731 g_hash_table_destroy (display_x11->atom_from_virtual);
732 g_hash_table_destroy (display_x11->atom_to_virtual);
734 XDestroyWindow (display_x11->xdisplay, display_x11->leader_window);
735 /* list of filters for client messages */
736 g_list_free (display_x11->client_filters);
737 /* List of event window extraction functions */
738 g_slist_foreach (display_x11->event_types, (GFunc)g_free, NULL);
739 g_slist_free (display_x11->event_types);
741 g_hash_table_destroy (display_x11->xid_ht);
742 /* input GdkDevice list */
743 /* FIXME need to write finalize fct */
744 for (tmp = display_x11->input_devices; tmp; tmp = tmp->next)
745 g_object_unref (tmp->data);
746 g_list_free (display_x11->input_devices);
747 /* input GdkWindow list */
748 for (tmp = display_x11->input_windows; tmp; tmp = tmp->next)
749 g_object_unref (tmp->data);
750 g_list_free (display_x11->input_windows);
751 /* Free all GdkScreens */
752 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
753 g_object_unref (display_x11->screens[i]);
754 g_free (display_x11->screens);
755 g_free (display_x11->startup_notification_id);
757 G_OBJECT_CLASS (parent_class)->finalize (object);
761 * gdk_x11_lookup_xdisplay:
762 * @xdisplay: a pointer to an X Display
764 * Find the #GdkDisplay corresponding to @display, if any exists.
766 * Return value: the #GdkDisplay, if found, otherwise %NULL.
771 gdk_x11_lookup_xdisplay (Display *xdisplay)
775 for (tmp_list = _gdk_displays; tmp_list; tmp_list = tmp_list->next)
777 if (GDK_DISPLAY_XDISPLAY (tmp_list->data) == xdisplay)
778 return tmp_list->data;
785 * _gdk_x11_display_screen_for_xrootwin:
786 * @display: a #Display
787 * @xrootwin: window ID for one of of the screen's of the display.
789 * Given the root window ID of one of the screen's of a #GdkDisplay,
792 * Return value: the #GdkScreen corresponding to @xrootwin, or %NULL.
795 _gdk_x11_display_screen_for_xrootwin (GdkDisplay *display,
800 n_screens = gdk_display_get_n_screens (display);
801 for (i = 0; i < n_screens; i++)
803 GdkScreen *screen = gdk_display_get_screen (display, i);
804 if (GDK_SCREEN_XROOTWIN (screen) == xrootwin)
812 * gdk_x11_display_get_xdisplay:
813 * @display: a #GdkDisplay
814 * @returns: an X display.
816 * Returns the X display of a #GdkDisplay.
821 gdk_x11_display_get_xdisplay (GdkDisplay *display)
823 return GDK_DISPLAY_X11 (display)->xdisplay;
827 _gdk_windowing_set_default_display (GdkDisplay *display)
829 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
830 const gchar *startup_id;
833 gdk_display = GDK_DISPLAY_XDISPLAY (display);
837 g_free (display_x11->startup_notification_id);
838 display_x11->startup_notification_id = NULL;
840 startup_id = g_getenv ("DESKTOP_STARTUP_ID");
841 if (startup_id && *startup_id != '\0')
843 if (!g_utf8_validate (startup_id, -1, NULL))
844 g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
846 display_x11->startup_notification_id = g_strdup (startup_id);
848 /* Clear the environment variable so it won't be inherited by
849 * child processes and confuse things.
851 g_unsetenv ("DESKTOP_STARTUP_ID");
853 /* Set the startup id on the leader window so it
854 * applies to all windows we create on this display
856 XChangeProperty (display_x11->xdisplay,
857 display_x11->leader_window,
858 gdk_x11_get_xatom_by_name_for_display (display, "_NET_STARTUP_ID"),
859 gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), 8,
861 startup_id, strlen (startup_id));
866 escape_for_xmessage (const char *str)
871 retval = g_string_new (NULL);
881 g_string_append_c (retval, '\\');
885 g_string_append_c (retval, *p);
889 return g_string_free (retval, FALSE);
893 broadcast_xmessage (GdkDisplay *display,
894 const char *message_type,
895 const char *message_type_begin,
898 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
899 GdkScreen *screen = gdk_display_get_default_screen (display);
900 GdkWindow *root_window = gdk_screen_get_root_window (screen);
901 Window xroot_window = GDK_WINDOW_XID (root_window);
904 Atom type_atom_begin;
908 XSetWindowAttributes attrs;
910 attrs.override_redirect = True;
911 attrs.event_mask = PropertyChangeMask | StructureNotifyMask;
914 XCreateWindow (xdisplay,
920 (Visual *)CopyFromParent,
921 CWOverrideRedirect | CWEventMask,
925 type_atom = gdk_x11_get_xatom_by_name_for_display (display,
927 type_atom_begin = gdk_x11_get_xatom_by_name_for_display (display,
937 xevent.xclient.type = ClientMessage;
938 xevent.xclient.message_type = type_atom_begin;
939 xevent.xclient.display =xdisplay;
940 xevent.xclient.window = xwindow;
941 xevent.xclient.format = 8;
944 src_end = message + strlen (message) + 1; /* +1 to include nul byte */
946 while (src != src_end)
948 dest = &xevent.xclient.data.b[0];
949 dest_end = dest + 20;
951 while (dest != dest_end &&
959 while (dest != dest_end)
965 XSendEvent (xdisplay,
971 xevent.xclient.message_type = type_atom;
975 XDestroyWindow (xdisplay, xwindow);
980 * gdk_notify_startup_complete:
982 * Indicates to the GUI environment that the application has finished
983 * loading. If the applications opens windows, this function is
984 * normally called after opening the application's initial set of
987 * GTK+ will call this function automatically after opening the first
988 * #GtkWindow unless gtk_window_set_auto_startup_notification() is called
989 * to disable that feature.
994 gdk_notify_startup_complete (void)
997 GdkDisplayX11 *display_x11;
1001 display = gdk_display_get_default ();
1005 display_x11 = GDK_DISPLAY_X11 (display);
1007 if (display_x11->startup_notification_id == NULL)
1010 escaped_id = escape_for_xmessage (display_x11->startup_notification_id);
1011 message = g_strdup_printf ("remove: ID=%s", escaped_id);
1012 g_free (escaped_id);
1014 broadcast_xmessage (display,
1015 "_NET_STARTUP_INFO",
1016 "_NET_STARTUP_INFO_BEGIN",
1024 * gdk_display_supports_selection_notification:
1025 * @display: a #GdkDisplay
1027 * Returns whether #GdkEventOwnerChange events will be
1028 * sent when the owner of a selection changes.
1030 * Return value: whether #GdkEventOwnerChange events will
1036 gdk_display_supports_selection_notification (GdkDisplay *display)
1038 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1040 return display_x11->have_xfixes;
1044 * gdk_display_request_selection_notification:
1045 * @display: a #GdkDisplay
1046 * @selection: the #GdkAtom naming the selection for which
1047 * ownership change notification is requested
1049 * Request #GdkEventOwnerChange events for ownership changes
1050 * of the selection named by the given atom.
1052 * Return value: whether #GdkEventOwnerChange events will
1057 gboolean gdk_display_request_selection_notification (GdkDisplay *display,
1062 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1065 if (display_x11->have_xfixes)
1067 atom = gdk_x11_atom_to_xatom_for_display (display,
1069 XFixesSelectSelectionInput (display_x11->xdisplay,
1070 display_x11->leader_window,
1072 XFixesSetSelectionOwnerNotifyMask |
1073 XFixesSelectionWindowDestroyNotifyMask |
1074 XFixesSelectionClientCloseNotifyMask);
1083 * gdk_display_supports_clipboard_persistence
1084 * @display: a #GdkDisplay
1086 * Returns whether the speicifed display supports clipboard
1087 * persistance; i.e. if it's possible to store the clipboard data after an
1088 * application has quit. On X11 this checks if a clipboard daemon is
1091 * Returns: %TRUE if the display supports clipboard persistance.
1096 gdk_display_supports_clipboard_persistence (GdkDisplay *display)
1098 /* It might make sense to cache this */
1099 return XGetSelectionOwner (GDK_DISPLAY_X11 (display)->xdisplay,
1100 gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER")) != None;
1104 * gdk_display_store_clipboard
1105 * @display: a #GdkDisplay
1106 * @clipboard_window: a #GdkWindow belonging to the clipboard owner
1107 * @time_: a timestamp
1108 * @targets: an array of targets that should be saved, or %NULL
1109 * if all available targets should be saved.
1110 * @n_targets: length of the @targets array
1112 * Issues a request to the the clipboard manager to store the
1113 * clipboard data. On X11, this is a special program that works
1114 * according to the freedesktop clipboard specification, available at
1115 * <ulink url="http://www.freedesktop.org/Standards/clipboard-manager-spec">
1116 * http://www.freedesktop.org/Standards/clipboard-manager-spec</ulink>.
1121 gdk_display_store_clipboard (GdkDisplay *display,
1122 GdkWindow *clipboard_window,
1127 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1128 Atom clipboard_manager, save_targets;
1130 clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER");
1131 save_targets = gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS");
1133 gdk_error_trap_push ();
1135 if (XGetSelectionOwner (display_x11->xdisplay, clipboard_manager) != None)
1137 Atom property_name = None;
1143 property_name = gdk_x11_atom_to_xatom_for_display (display, _gdk_selection_property);
1145 xatoms = g_new (Atom, n_targets);
1146 for (i = 0; i < n_targets; i++)
1147 xatoms[i] = gdk_x11_atom_to_xatom_for_display (display, targets[i]);
1149 XChangeProperty (display_x11->xdisplay, GDK_WINDOW_XID (clipboard_window),
1150 property_name, XA_ATOM,
1151 32, PropModeReplace, (guchar *)xatoms, n_targets);
1156 XConvertSelection (display_x11->xdisplay,
1157 clipboard_manager, save_targets, property_name,
1158 GDK_WINDOW_XID (clipboard_window), time_);
1161 gdk_error_trap_pop ();