1 /* GDK - The GIMP Drawing Kit
4 * Copyright 2001 Sun Microsystems Inc.
6 * Erwann Chenede <erwann.chenede@sun.com>
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public
19 * License along with this library; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
32 #include "gdkdisplay.h"
33 #include "gdkdisplay-x11.h"
34 #include "gdkscreen.h"
35 #include "gdkscreen-x11.h"
36 #include "gdkinternals.h"
37 #include "gdkinputprivate.h"
38 #include "xsettings-client.h"
40 #include <X11/Xatom.h>
43 #include <X11/XKBlib.h>
46 static void gdk_display_x11_class_init (GdkDisplayX11Class *class);
47 static void gdk_display_x11_dispose (GObject *object);
48 static void gdk_display_x11_finalize (GObject *object);
51 static void gdk_internal_connection_watch (Display *display,
55 XPointer *watch_data);
56 #endif /* HAVE_X11R6 */
58 static gpointer parent_class = NULL;
60 /* Note that we never *directly* use WM_LOCALE_NAME, WM_PROTOCOLS,
61 * but including them here has the side-effect of getting them
62 * into the internal Xlib cache
64 static const char *const precache_atoms[] = {
78 "_NET_WM_STATE_STICKY",
79 "_NET_WM_STATE_MAXIMIZED_VERT",
80 "_NET_WM_STATE_MAXIMIZED_HORZ",
81 "_NET_WM_STATE_FULLSCREEN",
82 "_NET_WM_WINDOW_TYPE",
83 "_NET_WM_WINDOW_TYPE_NORMAL",
87 _gdk_display_x11_get_type (void)
89 static GType object_type = 0;
93 static const GTypeInfo object_info =
95 sizeof (GdkDisplayX11Class),
97 (GBaseFinalizeFunc) NULL,
98 (GClassInitFunc) gdk_display_x11_class_init,
99 NULL, /* class_finalize */
100 NULL, /* class_data */
101 sizeof (GdkDisplayX11),
103 (GInstanceInitFunc) NULL,
106 object_type = g_type_register_static (GDK_TYPE_DISPLAY,
115 gdk_display_x11_class_init (GdkDisplayX11Class * class)
117 GObjectClass *object_class = G_OBJECT_CLASS (class);
119 object_class->dispose = gdk_display_x11_dispose;
120 object_class->finalize = gdk_display_x11_finalize;
122 parent_class = g_type_class_peek_parent (class);
127 * @display_name: the name of the display to open
128 * @returns: a #GdkDisplay, or %NULL if the display
129 * could not be opened.
136 gdk_display_open (const gchar *display_name)
140 GdkDisplayX11 *display_x11;
143 const char *sm_client_id;
145 XClassHint *class_hint;
149 xdisplay = XOpenDisplay (display_name);
153 display = g_object_new (GDK_TYPE_DISPLAY_X11, NULL);
154 display_x11 = GDK_DISPLAY_X11 (display);
156 display_x11->use_xshm = TRUE;
157 display_x11->xdisplay = xdisplay;
160 /* Set up handlers for Xlib internal connections */
161 XAddConnectionWatch (xdisplay, gdk_internal_connection_watch, NULL);
162 #endif /* HAVE_X11R6 */
164 /* initialize the display's screens */
165 display_x11->screens = g_new (GdkScreen *, ScreenCount (display_x11->xdisplay));
166 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
167 display_x11->screens[i] = _gdk_x11_screen_new (display, i);
169 /* We need to initialize events after we have the screen
170 * structures in places
172 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
173 _gdk_x11_events_init_screen (display_x11->screens[i]);
175 /*set the default screen */
176 display_x11->default_screen = display_x11->screens[DefaultScreen (display_x11->xdisplay)];
177 display_x11->leader_window = XCreateSimpleWindow (display_x11->xdisplay,
178 GDK_SCREEN_X11 (display_x11->default_screen)->xroot_window,
179 10, 10, 10, 10, 0, 0, 0);
180 display_x11->leader_window_title_set = FALSE;
182 display_x11->gravity_works = GDK_UNKNOWN;
183 display_x11->have_render = GDK_UNKNOWN;
185 if (_gdk_synchronize)
186 XSynchronize (display_x11->xdisplay, True);
188 _gdk_x11_precache_atoms (display, precache_atoms, G_N_ELEMENTS (precache_atoms));
190 class_hint = XAllocClassHint();
191 class_hint->res_name = g_get_prgname ();
193 class_hint->res_class = (char *)gdk_get_program_class ();
194 _gdk_get_command_line_args (&argc, &argv);
195 XmbSetWMProperties (display_x11->xdisplay,
196 display_x11->leader_window,
197 NULL, NULL, argv, argc, NULL, NULL,
201 sm_client_id = _gdk_get_sm_client_id ();
203 _gdk_windowing_display_set_sm_client_id (display, sm_client_id);
206 XChangeProperty (display_x11->xdisplay,
207 display_x11->leader_window,
208 gdk_x11_get_xatom_by_name_for_display (display, "_NET_WM_PID"),
209 XA_CARDINAL, 32, PropModeReplace, (guchar *) & pid, 1);
213 gint xkb_major = XkbMajorVersion;
214 gint xkb_minor = XkbMinorVersion;
215 if (XkbLibraryVersion (&xkb_major, &xkb_minor))
217 xkb_major = XkbMajorVersion;
218 xkb_minor = XkbMinorVersion;
220 if (XkbQueryExtension (display_x11->xdisplay,
221 NULL, &display_x11->xkb_event_type, NULL,
222 &xkb_major, &xkb_minor))
224 Bool detectable_autorepeat_supported;
226 display_x11->use_xkb = TRUE;
228 XkbSelectEvents (display_x11->xdisplay,
230 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask,
231 XkbNewKeyboardNotifyMask | XkbMapNotifyMask | XkbStateNotifyMask);
233 XkbSetDetectableAutoRepeat (display_x11->xdisplay,
235 &detectable_autorepeat_supported);
237 GDK_NOTE (MISC, g_message ("Detectable autorepeat %s.",
238 detectable_autorepeat_supported ?
239 "supported" : "not supported"));
241 display_x11->have_xkb_autorepeat = detectable_autorepeat_supported;
247 _gdk_windowing_image_init (display);
248 _gdk_events_init (display);
249 _gdk_input_init (display);
250 _gdk_dnd_init (display);
252 g_signal_emit_by_name (gdk_display_manager_get(),
253 "display_opened", display);
260 * XLib internal connection handling
262 typedef struct _GdkInternalConnection GdkInternalConnection;
264 struct _GdkInternalConnection
272 process_internal_connection (GIOChannel *gioc,
276 GdkInternalConnection *connection = (GdkInternalConnection *)data;
278 GDK_THREADS_ENTER ();
280 XProcessInternalConnection ((Display*)connection->display, connection->fd);
282 GDK_THREADS_LEAVE ();
287 static GdkInternalConnection *
288 gdk_add_connection_handler (Display *display,
291 GIOChannel *io_channel;
292 GdkInternalConnection *connection;
294 connection = g_new (GdkInternalConnection, 1);
297 connection->display = display;
299 io_channel = g_io_channel_unix_new (fd);
301 connection->source = g_io_create_watch (io_channel, G_IO_IN);
302 g_source_set_callback (connection->source,
303 (GSourceFunc)process_internal_connection, connection, NULL);
304 g_source_attach (connection->source, NULL);
306 g_io_channel_unref (io_channel);
312 gdk_remove_connection_handler (GdkInternalConnection *connection)
314 g_source_destroy (connection->source);
319 gdk_internal_connection_watch (Display *display,
323 XPointer *watch_data)
326 *watch_data = (XPointer)gdk_add_connection_handler (display, fd);
328 gdk_remove_connection_handler ((GdkInternalConnection *)*watch_data);
330 #endif /* HAVE_X11R6 */
333 * gdk_display_get_name:
334 * @display: a #GdkDisplay
336 * Gets the name of the display.
338 * Returns: a string representing the display name. This string is owned
339 * by GDK and should not be modified or freed.
343 G_CONST_RETURN gchar *
344 gdk_display_get_name (GdkDisplay * display)
346 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
348 return (gchar *) DisplayString (GDK_DISPLAY_X11 (display)->xdisplay);
352 * gdk_display_get_n_screens:
353 * @display: a #GdkDisplay
355 * Gets the number of screen managed by the @display.
357 * Returns: number of screens.
362 gdk_display_get_n_screens (GdkDisplay * display)
364 g_return_val_if_fail (GDK_IS_DISPLAY (display), 0);
366 return ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay);
370 * gdk_display_get_screen:
371 * @display: a #GdkDisplay
372 * @screen_num: the screen number
374 * Returns a screen object for one of the screens of the display.
376 * Returns: the #GdkScreen object
381 gdk_display_get_screen (GdkDisplay * display, gint screen_num)
383 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
384 g_return_val_if_fail (ScreenCount (GDK_DISPLAY_X11 (display)->xdisplay) > screen_num, NULL);
386 return GDK_DISPLAY_X11 (display)->screens[screen_num];
390 * gdk_display_get_default_screen:
391 * @display: a #GdkDisplay
393 * Get the default #GdkScreen for @display.
395 * Returns: the default #GdkScreen object for @display
400 gdk_display_get_default_screen (GdkDisplay * display)
402 g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
404 return GDK_DISPLAY_X11 (display)->default_screen;
408 _gdk_x11_display_is_root_window (GdkDisplay *display,
411 GdkDisplayX11 *display_x11;
414 g_return_val_if_fail (GDK_IS_DISPLAY (display), FALSE);
416 display_x11 = GDK_DISPLAY_X11 (display);
418 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
420 if (GDK_SCREEN_XROOTWIN (display_x11->screens[i]) == xroot_window)
427 * gdk_display_pointer_ungrab:
428 * @display: a #GdkDisplay.
429 * @time_: a timestap (e.g. GDK_CURRENT_TIME).
431 * Release any pointer grab.
436 gdk_display_pointer_ungrab (GdkDisplay *display,
441 g_return_if_fail (GDK_IS_DISPLAY (display));
443 xdisplay = GDK_DISPLAY_XDISPLAY (display);
445 _gdk_input_ungrab_pointer (display, time);
446 XUngrabPointer (xdisplay, time);
449 GDK_DISPLAY_X11 (display)->pointer_xgrab_window = NULL;
453 * gdk_display_pointer_is_grabbed:
454 * @display: a #GdkDisplay
456 * Test if the pointer is grabbed.
458 * Returns: %TRUE if an active X pointer grab is in effect
463 gdk_display_pointer_is_grabbed (GdkDisplay * display)
465 g_return_val_if_fail (GDK_IS_DISPLAY (display), TRUE);
467 return (GDK_DISPLAY_X11 (display)->pointer_xgrab_window != NULL);
471 * gdk_display_keyboard_ungrab:
472 * @display: a #GdkDisplay.
473 * @time_: a timestap (e.g #GDK_CURRENT_TIME).
475 * Release any keyboard grab
480 gdk_display_keyboard_ungrab (GdkDisplay *display,
485 g_return_if_fail (GDK_IS_DISPLAY (display));
487 xdisplay = GDK_DISPLAY_XDISPLAY (display);
489 XUngrabKeyboard (xdisplay, time);
492 GDK_DISPLAY_X11 (display)->keyboard_xgrab_window = NULL;
497 * @display: a #GdkDisplay
499 * Emits a short beep on @display
504 gdk_display_beep (GdkDisplay * display)
506 g_return_if_fail (GDK_IS_DISPLAY (display));
508 XBell (GDK_DISPLAY_XDISPLAY (display), 0);
513 * @display: a #GdkDisplay
515 * Flushes any requests queued for the windowing system and waits until all
516 * requests have been handled. This is often used for making sure that the
517 * display is synchronized with the current state of the program. Calling
518 * gdk_display_sync() before gdk_error_trap_pop() makes sure that any errors
519 * generated from earlier requests are handled before the error trap is
522 * This is most useful for X11. On windowing systems where requests are
523 * handled synchronously, this function will do nothing.
528 gdk_display_sync (GdkDisplay * display)
530 g_return_if_fail (GDK_IS_DISPLAY (display));
532 XSync (GDK_DISPLAY_XDISPLAY (display), False);
537 * @display: a #GdkDisplay
539 * Flushes any requests queued for the windowing system; this happens automatically
540 * when the main loop blocks waiting for new events, but if your application
541 * is drawing without returning control to the main loop, you may need
542 * to call this function explicitely. A common case where this function
543 * needs to be called is when an application is executing drawing commands
544 * from a thread other than the thread where the main loop is running.
546 * This is most useful for X11. On windowing systems where requests are
547 * handled synchronously, this function will do nothing.
552 gdk_display_flush (GdkDisplay *display)
554 g_return_if_fail (GDK_IS_DISPLAY (display));
556 if (!display->closed)
557 XFlush (GDK_DISPLAY_XDISPLAY (display));
561 * gdk_x11_display_grab:
562 * @display: a #GdkDisplay
564 * Call XGrabServer() on @display.
565 * To ungrab the display again, use gdk_x11_display_ungrab().
567 * gdk_x11_display_grab()/gdk_x11_display_ungrab() calls can be nested.
572 gdk_x11_display_grab (GdkDisplay * display)
574 GdkDisplayX11 *display_x11;
576 g_return_if_fail (GDK_IS_DISPLAY (display));
578 display_x11 = GDK_DISPLAY_X11 (display);
580 if (display_x11->grab_count == 0)
581 XGrabServer (display_x11->xdisplay);
582 display_x11->grab_count++;
586 * gdk_x11_display_ungrab:
587 * @display: a #GdkDisplay
589 * Ungrab @display after it has been grabbed with
590 * gdk_x11_display_grab().
595 gdk_x11_display_ungrab (GdkDisplay * display)
597 GdkDisplayX11 *display_x11;
599 g_return_if_fail (GDK_IS_DISPLAY (display));
601 display_x11 = GDK_DISPLAY_X11 (display);;
602 g_return_if_fail (display_x11->grab_count > 0);
604 display_x11->grab_count--;
605 if (display_x11->grab_count == 0)
607 XUngrabServer (display_x11->xdisplay);
608 XFlush (display_x11->xdisplay);
613 gdk_display_x11_dispose (GObject *object)
615 GdkDisplayX11 *display_x11;
618 display_x11 = GDK_DISPLAY_X11 (object);
620 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
621 _gdk_screen_close (display_x11->screens[i]);
623 g_source_destroy (display_x11->event_source);
625 XCloseDisplay (display_x11->xdisplay);
626 display_x11->xdisplay = NULL;
628 G_OBJECT_CLASS (parent_class)->dispose (object);
632 gdk_display_x11_finalize (GObject *object)
634 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (object);
637 /* FIXME need to write GdkKeymap finalize fct
638 g_object_unref (display_x11->keymap);
641 if (display_x11->motif_target_lists)
643 for (i = 0; i < display_x11->motif_n_target_lists; i++)
644 g_list_free (display_x11->motif_target_lists[i]);
645 g_free (display_x11->motif_target_lists);
649 g_hash_table_destroy (display_x11->atom_from_virtual);
650 g_hash_table_destroy (display_x11->atom_to_virtual);
652 XDestroyWindow (display_x11->xdisplay, display_x11->leader_window);
653 /* list of filters for client messages */
654 g_list_free (display_x11->client_filters);
655 /* List of event window extraction functions */
656 g_slist_foreach (display_x11->event_types, (GFunc)g_free, NULL);
657 g_slist_free (display_x11->event_types);
659 g_hash_table_destroy (display_x11->xid_ht);
660 /* input GdkDevice list */
661 /* FIXME need to write finalize fct */
662 for (tmp = display_x11->input_devices; tmp; tmp = tmp->next)
663 g_object_unref (tmp->data);
664 g_list_free (display_x11->input_devices);
665 /* input GdkWindow list */
666 for (tmp = display_x11->input_windows; tmp; tmp = tmp->next)
667 g_object_unref (tmp->data);
668 g_list_free (display_x11->input_windows);
669 /* Free all GdkScreens */
670 for (i = 0; i < ScreenCount (display_x11->xdisplay); i++)
671 g_object_unref (display_x11->screens[i]);
672 g_free (display_x11->screens);
673 g_free (display_x11->startup_notification_id);
675 G_OBJECT_CLASS (parent_class)->finalize (object);
679 * gdk_x11_lookup_xdisplay:
680 * @xdisplay: a pointer to an X Display
682 * Find the #GdkDisplay corresponding to @display, if any exists.
684 * Return value: the #GdkDisplay, if found, otherwise %NULL.
689 gdk_x11_lookup_xdisplay (Display *xdisplay)
693 for (tmp_list = _gdk_displays; tmp_list; tmp_list = tmp_list->next)
695 if (GDK_DISPLAY_XDISPLAY (tmp_list->data) == xdisplay)
696 return tmp_list->data;
703 * _gdk_x11_display_screen_for_xrootwin:
704 * @display: a #Display
705 * @xrootwin: window ID for one of of the screen's of the display.
707 * Given the root window ID of one of the screen's of a #GdkDisplay,
710 * Return value: the #GdkScreen corresponding to @xrootwin, or %NULL.
713 _gdk_x11_display_screen_for_xrootwin (GdkDisplay *display,
718 n_screens = gdk_display_get_n_screens (display);
719 for (i = 0; i < n_screens; i++)
721 GdkScreen *screen = gdk_display_get_screen (display, i);
722 if (GDK_SCREEN_XROOTWIN (screen) == xrootwin)
730 * gdk_x11_display_get_xdisplay:
731 * @display: a #GdkDisplay
732 * @returns: an X display.
734 * Returns the X display of a #GdkDisplay.
739 gdk_x11_display_get_xdisplay (GdkDisplay *display)
741 return GDK_DISPLAY_X11 (display)->xdisplay;
745 _gdk_windowing_set_default_display (GdkDisplay *display)
747 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
748 const gchar *startup_id;
751 gdk_display = GDK_DISPLAY_XDISPLAY (display);
755 g_free (display_x11->startup_notification_id);
756 display_x11->startup_notification_id = NULL;
758 startup_id = g_getenv ("DESKTOP_STARTUP_ID");
759 if (startup_id && *startup_id != '\0')
761 if (!g_utf8_validate (startup_id, -1, NULL))
762 g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
764 display_x11->startup_notification_id = g_strdup (startup_id);
766 /* Clear the environment variable so it won't be inherited by
767 * child processes and confuse things. unsetenv isn't portable,
770 putenv ("DESKTOP_STARTUP_ID=");
772 /* Set the startup id on the leader window so it
773 * applies to all windows we create on this display
775 XChangeProperty (display_x11->xdisplay,
776 display_x11->leader_window,
777 gdk_x11_get_xatom_by_name_for_display (display, "_NET_STARTUP_ID"),
778 gdk_x11_get_xatom_by_name_for_display (display, "UTF8_STRING"), 8,
780 startup_id, strlen (startup_id));
785 escape_for_xmessage (const char *str)
790 retval = g_string_new (NULL);
800 g_string_append_c (retval, '\\');
804 g_string_append_c (retval, *p);
808 return g_string_free (retval, FALSE);
812 broadcast_xmessage (GdkDisplay *display,
813 const char *message_type,
814 const char *message_type_begin,
817 Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);
818 GdkScreen *screen = gdk_display_get_default_screen (display);
819 GdkWindow *root_window = gdk_screen_get_root_window (screen);
820 Window xroot_window = GDK_WINDOW_XID (root_window);
823 Atom type_atom_begin;
827 XSetWindowAttributes attrs;
829 attrs.override_redirect = True;
830 attrs.event_mask = PropertyChangeMask | StructureNotifyMask;
833 XCreateWindow (xdisplay,
840 CWOverrideRedirect | CWEventMask,
844 type_atom = gdk_x11_get_xatom_by_name_for_display (display,
846 type_atom_begin = gdk_x11_get_xatom_by_name_for_display (display,
856 xevent.xclient.type = ClientMessage;
857 xevent.xclient.message_type = type_atom_begin;
858 xevent.xclient.display =xdisplay;
859 xevent.xclient.window = xwindow;
860 xevent.xclient.format = 8;
863 src_end = message + strlen (message) + 1; /* +1 to include nul byte */
865 while (src != src_end)
867 dest = &xevent.xclient.data.b[0];
868 dest_end = dest + 20;
870 while (dest != dest_end &&
878 while (dest != dest_end)
884 XSendEvent (xdisplay,
890 xevent.xclient.message_type = type_atom;
894 XDestroyWindow (xdisplay, xwindow);
899 * gdk_notify_startup_complete:
901 * Indicates to the GUI environment that the application has finished
902 * loading. If the applications opens windows, this function is
903 * normally called after opening the application's initial set of
906 * GTK+ will call this function automatically after opening the first
907 * #GtkWindow unless gtk_window_set_auto_startup_notification() is called
908 * to disable that feature.
913 gdk_notify_startup_complete (void)
916 GdkDisplayX11 *display_x11;
920 display = gdk_display_get_default ();
924 display_x11 = GDK_DISPLAY_X11 (display);
926 if (display_x11->startup_notification_id == NULL)
929 escaped_id = escape_for_xmessage (display_x11->startup_notification_id);
930 message = g_strdup_printf ("remove: ID=%s", escaped_id);
933 broadcast_xmessage (display,
935 "_NET_STARTUP_INFO_BEGIN",