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.
30 #include "gdkscreen.h"
31 #include "gdkscreen-x11.h"
32 #include "gdkdisplay.h"
33 #include "gdkdisplay-x11.h"
36 #include <X11/Xatom.h>
38 #ifdef HAVE_SOLARIS_XINERAMA
39 #include <X11/extensions/xinerama.h>
41 #ifdef HAVE_XFREE_XINERAMA
42 #include <X11/extensions/Xinerama.h>
46 #include <X11/extensions/Xrandr.h>
50 #include <X11/extensions/Xfixes.h>
53 #include "gdksettings.c"
55 static void gdk_screen_x11_dispose (GObject *object);
56 static void gdk_screen_x11_finalize (GObject *object);
57 static void init_randr_support (GdkScreen *screen);
58 static void deinit_multihead (GdkScreen *screen);
62 WINDOW_MANAGER_CHANGED,
66 static guint signals[LAST_SIGNAL] = { 0 };
68 G_DEFINE_TYPE (GdkScreenX11, _gdk_screen_x11, GDK_TYPE_SCREEN)
70 typedef struct _NetWmSupportedAtoms NetWmSupportedAtoms;
72 struct _NetWmSupportedAtoms
80 GdkRectangle geometry;
89 _gdk_screen_x11_class_init (GdkScreenX11Class *klass)
91 GObjectClass *object_class = G_OBJECT_CLASS (klass);
93 object_class->dispose = gdk_screen_x11_dispose;
94 object_class->finalize = gdk_screen_x11_finalize;
96 signals[WINDOW_MANAGER_CHANGED] =
97 g_signal_new (g_intern_static_string ("window_manager_changed"),
98 G_OBJECT_CLASS_TYPE (object_class),
100 G_STRUCT_OFFSET (GdkScreenX11Class, window_manager_changed),
102 g_cclosure_marshal_VOID__VOID,
108 _gdk_screen_x11_init (GdkScreenX11 *screen)
113 * gdk_screen_get_display:
114 * @screen: a #GdkScreen
116 * Gets the display to which the @screen belongs.
118 * Returns: the display to which @screen belongs
123 gdk_screen_get_display (GdkScreen *screen)
125 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
127 return GDK_SCREEN_X11 (screen)->display;
130 * gdk_screen_get_width:
131 * @screen: a #GdkScreen
133 * Gets the width of @screen in pixels
135 * Returns: the width of @screen in pixels.
140 gdk_screen_get_width (GdkScreen *screen)
142 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
144 return WidthOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
148 * gdk_screen_get_height:
149 * @screen: a #GdkScreen
151 * Gets the height of @screen in pixels
153 * Returns: the height of @screen in pixels.
158 gdk_screen_get_height (GdkScreen *screen)
160 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
162 return HeightOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
166 * gdk_screen_get_width_mm:
167 * @screen: a #GdkScreen
169 * Gets the width of @screen in millimeters.
170 * Note that on some X servers this value will not be correct.
172 * Returns: the width of @screen in millimeters.
177 gdk_screen_get_width_mm (GdkScreen *screen)
179 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
181 return WidthMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
185 * gdk_screen_get_height_mm:
186 * @screen: a #GdkScreen
188 * Returns the height of @screen in millimeters.
189 * Note that on some X servers this value will not be correct.
191 * Returns: the heigth of @screen in millimeters.
196 gdk_screen_get_height_mm (GdkScreen *screen)
198 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
200 return HeightMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
204 * gdk_screen_get_number:
205 * @screen: a #GdkScreen
207 * Gets the index of @screen among the screens in the display
208 * to which it belongs. (See gdk_screen_get_display())
215 gdk_screen_get_number (GdkScreen *screen)
217 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
219 return GDK_SCREEN_X11 (screen)->screen_num;
223 * gdk_screen_get_root_window:
224 * @screen: a #GdkScreen
226 * Gets the root window of @screen.
228 * Returns: (transfer none): the root window
233 gdk_screen_get_root_window (GdkScreen *screen)
235 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
237 return GDK_SCREEN_X11 (screen)->root_window;
241 * gdk_screen_get_default_colormap:
242 * @screen: a #GdkScreen
244 * Gets the default colormap for @screen.
246 * Returns: (transfer none): the default #GdkColormap.
251 gdk_screen_get_default_colormap (GdkScreen *screen)
253 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
255 return GDK_SCREEN_X11 (screen)->default_colormap;
259 * gdk_screen_set_default_colormap:
260 * @screen: a #GdkScreen
261 * @colormap: a #GdkColormap
263 * Sets the default @colormap for @screen.
268 gdk_screen_set_default_colormap (GdkScreen *screen,
269 GdkColormap *colormap)
271 GdkColormap *old_colormap;
273 g_return_if_fail (GDK_IS_SCREEN (screen));
274 g_return_if_fail (GDK_IS_COLORMAP (colormap));
276 old_colormap = GDK_SCREEN_X11 (screen)->default_colormap;
278 GDK_SCREEN_X11 (screen)->default_colormap = g_object_ref (colormap);
281 g_object_unref (old_colormap);
285 _gdk_screen_x11_events_uninit (GdkScreen *screen)
287 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
289 if (screen_x11->xsettings_client)
291 xsettings_client_destroy (screen_x11->xsettings_client);
292 screen_x11->xsettings_client = NULL;
297 gdk_screen_x11_dispose (GObject *object)
299 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);
302 for (i = 0; i < 32; ++i)
304 if (screen_x11->subwindow_gcs[i])
306 XFreeGC (screen_x11->xdisplay, screen_x11->subwindow_gcs[i]);
307 screen_x11->subwindow_gcs[i] = 0;
311 _gdk_screen_x11_events_uninit (GDK_SCREEN (object));
313 if (screen_x11->default_colormap)
315 g_object_unref (screen_x11->default_colormap);
316 screen_x11->default_colormap = NULL;
319 if (screen_x11->system_colormap)
321 g_object_unref (screen_x11->system_colormap);
322 screen_x11->system_colormap = NULL;
325 if (screen_x11->rgba_colormap)
327 g_object_unref (screen_x11->rgba_colormap);
328 screen_x11->rgba_colormap = NULL;
331 if (screen_x11->root_window)
332 _gdk_window_destroy (screen_x11->root_window, TRUE);
334 G_OBJECT_CLASS (_gdk_screen_x11_parent_class)->dispose (object);
336 screen_x11->xdisplay = NULL;
337 screen_x11->xscreen = NULL;
338 screen_x11->screen_num = -1;
339 screen_x11->xroot_window = None;
340 screen_x11->wmspec_check_window = None;
344 gdk_screen_x11_finalize (GObject *object)
346 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);
349 if (screen_x11->root_window)
350 g_object_unref (screen_x11->root_window);
353 for (i = 0; i < screen_x11->nvisuals; i++)
354 g_object_unref (screen_x11->visuals[i]);
355 g_free (screen_x11->visuals);
356 g_hash_table_destroy (screen_x11->visual_hash);
358 g_free (screen_x11->window_manager_name);
360 g_hash_table_destroy (screen_x11->colormap_hash);
362 deinit_multihead (GDK_SCREEN (object));
364 G_OBJECT_CLASS (_gdk_screen_x11_parent_class)->finalize (object);
368 * gdk_screen_get_n_monitors:
369 * @screen: a #GdkScreen
371 * Returns the number of monitors which @screen consists of.
373 * Returns: number of monitors which @screen consists of
378 gdk_screen_get_n_monitors (GdkScreen *screen)
380 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
382 return GDK_SCREEN_X11 (screen)->n_monitors;
386 * gdk_screen_get_primary_monitor:
387 * @screen: a #GdkScreen.
389 * Gets the primary monitor for @screen. The primary monitor
390 * is considered the monitor where the 'main desktop' lives.
391 * While normal application windows typically allow the window
392 * manager to place the windows, specialized desktop applications
393 * such as panels should place themselves on the primary monitor.
395 * If no primary monitor is configured by the user, the return value
396 * will be 0, defaulting to the first monitor.
398 * Returns: An integer index for the primary monitor, or 0 if none is configured.
403 gdk_screen_get_primary_monitor (GdkScreen *screen)
405 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
407 return GDK_SCREEN_X11 (screen)->primary_monitor;
411 * gdk_screen_get_monitor_width_mm:
412 * @screen: a #GdkScreen
413 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
415 * Gets the width in millimeters of the specified monitor, if available.
417 * Returns: the width of the monitor, or -1 if not available
422 gdk_screen_get_monitor_width_mm (GdkScreen *screen,
425 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
427 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
428 g_return_val_if_fail (monitor_num >= 0, -1);
429 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
431 return screen_x11->monitors[monitor_num].width_mm;
435 * gdk_screen_get_monitor_height_mm:
436 * @screen: a #GdkScreen
437 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
439 * Gets the height in millimeters of the specified monitor.
441 * Returns: the height of the monitor, or -1 if not available
446 gdk_screen_get_monitor_height_mm (GdkScreen *screen,
449 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
451 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
452 g_return_val_if_fail (monitor_num >= 0, -1);
453 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
455 return screen_x11->monitors[monitor_num].height_mm;
459 * gdk_screen_get_monitor_plug_name:
460 * @screen: a #GdkScreen
461 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
463 * Returns the output name of the specified monitor.
464 * Usually something like VGA, DVI, or TV, not the actual
465 * product name of the display device.
467 * Returns: a newly-allocated string containing the name of the monitor,
468 * or %NULL if the name cannot be determined
473 gdk_screen_get_monitor_plug_name (GdkScreen *screen,
476 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
478 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
479 g_return_val_if_fail (monitor_num >= 0, NULL);
480 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, NULL);
482 return g_strdup (screen_x11->monitors[monitor_num].output_name);
486 * gdk_x11_screen_get_monitor_output:
487 * @screen: a #GdkScreen
488 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
490 * Gets the XID of the specified output/monitor.
491 * If the X server does not support version 1.2 of the RANDR
492 * extension, 0 is returned.
494 * Returns: the XID of the monitor
499 gdk_x11_screen_get_monitor_output (GdkScreen *screen,
502 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
504 g_return_val_if_fail (GDK_IS_SCREEN (screen), None);
505 g_return_val_if_fail (monitor_num >= 0, None);
506 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, None);
508 return screen_x11->monitors[monitor_num].output;
512 * gdk_screen_get_monitor_geometry:
513 * @screen : a #GdkScreen
514 * @monitor_num: the monitor number, between 0 and gdk_screen_get_n_monitors (screen)
515 * @dest : a #GdkRectangle to be filled with the monitor geometry
517 * Retrieves the #GdkRectangle representing the size and position of
518 * the individual monitor within the entire screen area.
520 * Note that the size of the entire screen area can be retrieved via
521 * gdk_screen_get_width() and gdk_screen_get_height().
526 gdk_screen_get_monitor_geometry (GdkScreen *screen,
530 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
532 g_return_if_fail (GDK_IS_SCREEN (screen));
533 g_return_if_fail (monitor_num >= 0);
534 g_return_if_fail (monitor_num < screen_x11->n_monitors);
537 *dest = screen_x11->monitors[monitor_num].geometry;
541 * gdk_screen_get_rgba_colormap:
542 * @screen: a #GdkScreen.
544 * Gets a colormap to use for creating windows or pixmaps with an
545 * alpha channel. The windowing system on which GTK+ is running
546 * may not support this capability, in which case %NULL will
547 * be returned. Even if a non-%NULL value is returned, its
548 * possible that the window's alpha channel won't be honored
549 * when displaying the window on the screen: in particular, for
550 * X an appropriate windowing manager and compositing manager
551 * must be running to provide appropriate display.
553 * This functionality is not implemented in the Windows backend.
555 * For setting an overall opacity for a top-level window, see
556 * gdk_window_set_opacity().
558 * Return value: (transfer none): a colormap to use for windows with
559 * an alpha channel or %NULL if the capability is not available.
564 gdk_screen_get_rgba_colormap (GdkScreen *screen)
566 GdkScreenX11 *screen_x11;
568 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
570 screen_x11 = GDK_SCREEN_X11 (screen);
572 if (!screen_x11->rgba_visual)
575 if (!screen_x11->rgba_colormap)
576 screen_x11->rgba_colormap = gdk_colormap_new (screen_x11->rgba_visual,
579 return screen_x11->rgba_colormap;
583 * gdk_screen_get_rgba_visual:
584 * @screen: a #GdkScreen
586 * Gets a visual to use for creating windows or pixmaps with an
587 * alpha channel. See the docs for gdk_screen_get_rgba_colormap()
590 * Return value: (transfer none): a visual to use for windows with an
591 * alpha channel or %NULL if the capability is not available.
596 gdk_screen_get_rgba_visual (GdkScreen *screen)
598 GdkScreenX11 *screen_x11;
600 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
602 screen_x11 = GDK_SCREEN_X11 (screen);
604 return screen_x11->rgba_visual;
608 * gdk_x11_screen_get_xscreen:
609 * @screen: a #GdkScreen.
610 * @returns: (transfer none): an Xlib <type>Screen*</type>
612 * Returns the screen of a #GdkScreen.
617 gdk_x11_screen_get_xscreen (GdkScreen *screen)
619 return GDK_SCREEN_X11 (screen)->xscreen;
623 * gdk_x11_screen_get_screen_number:
624 * @screen: a #GdkScreen.
625 * @returns: the position of @screen among the screens of
628 * Returns the index of a #GdkScreen.
633 gdk_x11_screen_get_screen_number (GdkScreen *screen)
635 return GDK_SCREEN_X11 (screen)->screen_num;
639 check_is_composited (GdkDisplay *display,
640 GdkScreenX11 *screen_x11)
642 Atom xselection = gdk_x11_atom_to_xatom_for_display (display, screen_x11->cm_selection_atom);
645 xwindow = XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display), xselection);
647 return xwindow != None;
651 make_cm_atom (int screen_number)
653 gchar *name = g_strdup_printf ("_NET_WM_CM_S%d", screen_number);
654 GdkAtom atom = gdk_atom_intern (name, FALSE);
660 init_monitor_geometry (GdkX11Monitor *monitor,
661 int x, int y, int width, int height)
663 monitor->geometry.x = x;
664 monitor->geometry.y = y;
665 monitor->geometry.width = width;
666 monitor->geometry.height = height;
668 monitor->output = None;
669 monitor->width_mm = -1;
670 monitor->height_mm = -1;
671 monitor->output_name = NULL;
672 monitor->manufacturer = NULL;
676 init_fake_xinerama (GdkScreen *screen)
678 #ifdef G_ENABLE_DEBUG
679 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
680 XSetWindowAttributes atts;
684 if (!(_gdk_debug_flags & GDK_DEBUG_XINERAMA))
687 /* Fake Xinerama mode by splitting the screen into 4 monitors.
688 * Also draw a little cross to make the monitor boundaries visible.
690 w = WidthOfScreen (screen_x11->xscreen);
691 h = HeightOfScreen (screen_x11->xscreen);
693 screen_x11->n_monitors = 4;
694 screen_x11->monitors = g_new0 (GdkX11Monitor, 4);
695 init_monitor_geometry (&screen_x11->monitors[0], 0, 0, w / 2, h / 2);
696 init_monitor_geometry (&screen_x11->monitors[1], w / 2, 0, w / 2, h / 2);
697 init_monitor_geometry (&screen_x11->monitors[2], 0, h / 2, w / 2, h / 2);
698 init_monitor_geometry (&screen_x11->monitors[3], w / 2, h / 2, w / 2, h / 2);
700 atts.override_redirect = 1;
701 atts.background_pixel = WhitePixel(GDK_SCREEN_XDISPLAY (screen),
702 screen_x11->screen_num);
703 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
704 screen_x11->xroot_window, 0, h / 2, w, 1, 0,
705 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
706 screen_x11->screen_num),
708 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
709 screen_x11->screen_num),
710 CWOverrideRedirect|CWBackPixel,
712 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
713 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
714 screen_x11->xroot_window, w/2 , 0, 1, h, 0,
715 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
716 screen_x11->screen_num),
718 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
719 screen_x11->screen_num),
720 CWOverrideRedirect|CWBackPixel,
722 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
730 free_monitors (GdkX11Monitor *monitors,
735 for (i = 0; i < n_monitors; ++i)
737 g_free (monitors[i].output_name);
738 g_free (monitors[i].manufacturer);
746 monitor_compare_function (GdkX11Monitor *monitor1,
747 GdkX11Monitor *monitor2)
749 /* Sort the leftmost/topmost monitors first.
750 * For "cloned" monitors, sort the bigger ones first
751 * (giving preference to taller monitors over wider
755 if (monitor1->geometry.x != monitor2->geometry.x)
756 return monitor1->geometry.x - monitor2->geometry.x;
758 if (monitor1->geometry.y != monitor2->geometry.y)
759 return monitor1->geometry.y - monitor2->geometry.y;
761 if (monitor1->geometry.height != monitor2->geometry.height)
762 return - (monitor1->geometry.height - monitor2->geometry.height);
764 if (monitor1->geometry.width != monitor2->geometry.width)
765 return - (monitor1->geometry.width - monitor2->geometry.width);
772 init_randr13 (GdkScreen *screen)
775 GdkDisplay *display = gdk_screen_get_display (screen);
776 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
777 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
778 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
779 XRRScreenResources *resources;
780 RROutput primary_output;
781 RROutput first_output = None;
784 gboolean randr12_compat = FALSE;
786 if (!display_x11->have_randr13)
789 resources = XRRGetScreenResourcesCurrent (screen_x11->xdisplay,
790 screen_x11->xroot_window);
794 monitors = g_array_sized_new (FALSE, TRUE, sizeof (GdkX11Monitor),
797 for (i = 0; i < resources->noutput; ++i)
799 XRROutputInfo *output =
800 XRRGetOutputInfo (dpy, resources, resources->outputs[i]);
802 /* Non RandR1.2 X driver have output name "default" */
803 randr12_compat |= !g_strcmp0 (output->name, "default");
805 if (output->connection == RR_Disconnected)
807 XRRFreeOutputInfo (output);
813 GdkX11Monitor monitor;
814 XRRCrtcInfo *crtc = XRRGetCrtcInfo (dpy, resources, output->crtc);
816 monitor.geometry.x = crtc->x;
817 monitor.geometry.y = crtc->y;
818 monitor.geometry.width = crtc->width;
819 monitor.geometry.height = crtc->height;
821 monitor.output = resources->outputs[i];
822 monitor.width_mm = output->mm_width;
823 monitor.height_mm = output->mm_height;
824 monitor.output_name = g_strdup (output->name);
825 /* FIXME: need EDID parser */
826 monitor.manufacturer = NULL;
828 g_array_append_val (monitors, monitor);
830 XRRFreeCrtcInfo (crtc);
833 XRRFreeOutputInfo (output);
836 if (resources->noutput > 0)
837 first_output = resources->outputs[0];
839 XRRFreeScreenResources (resources);
841 /* non RandR 1.2 X driver doesn't return any usable multihead data */
844 guint n_monitors = monitors->len;
846 free_monitors ((GdkX11Monitor *)g_array_free (monitors, FALSE),
852 g_array_sort (monitors,
853 (GCompareFunc) monitor_compare_function);
854 screen_x11->n_monitors = monitors->len;
855 screen_x11->monitors = (GdkX11Monitor *)g_array_free (monitors, FALSE);
857 screen_x11->primary_monitor = 0;
859 primary_output = XRRGetOutputPrimary (screen_x11->xdisplay,
860 screen_x11->xroot_window);
862 for (i = 0; i < screen_x11->n_monitors; ++i)
864 if (screen_x11->monitors[i].output == primary_output)
866 screen_x11->primary_monitor = i;
870 /* No RandR1.3+ available or no primary set, fall back to prefer LVDS as primary if present */
871 if (primary_output == None &&
872 g_ascii_strncasecmp (screen_x11->monitors[i].output_name, "LVDS", 4) == 0)
874 screen_x11->primary_monitor = i;
878 /* No primary specified and no LVDS found */
879 if (screen_x11->monitors[i].output == first_output)
880 screen_x11->primary_monitor = i;
883 return screen_x11->n_monitors > 0;
890 init_solaris_xinerama (GdkScreen *screen)
892 #ifdef HAVE_SOLARIS_XINERAMA
893 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
894 int screen_no = gdk_screen_get_number (screen);
895 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
896 XRectangle monitors[MAXFRAMEBUFFERS];
897 unsigned char hints[16];
902 if (!XineramaGetState (dpy, screen_no))
905 result = XineramaGetInfo (dpy, screen_no, monitors, hints, &n_monitors);
907 /* Yes I know it should be Success but the current implementation
908 * returns the num of monitor
915 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
916 screen_x11->n_monitors = n_monitors;
918 for (i = 0; i < n_monitors; i++)
920 init_monitor_geometry (&screen_x11->monitors[i],
921 monitors[i].x, monitors[i].y,
922 monitors[i].width, monitors[i].height);
925 screen_x11->primary_monitor = 0;
928 #endif /* HAVE_SOLARIS_XINERAMA */
934 init_xfree_xinerama (GdkScreen *screen)
936 #ifdef HAVE_XFREE_XINERAMA
937 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
938 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
939 XineramaScreenInfo *monitors;
942 if (!XineramaIsActive (dpy))
945 monitors = XineramaQueryScreens (dpy, &n_monitors);
947 if (n_monitors <= 0 || monitors == NULL)
949 /* If Xinerama doesn't think we have any monitors, try acting as
950 * though we had no Xinerama. If the "no monitors" condition
951 * is because XRandR 1.2 is currently switching between CRTCs,
952 * we'll be notified again when we have our monitor back,
953 * and can go back into Xinerama-ish mode at that point.
961 screen_x11->n_monitors = n_monitors;
962 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
964 for (i = 0; i < n_monitors; ++i)
966 init_monitor_geometry (&screen_x11->monitors[i],
967 monitors[i].x_org, monitors[i].y_org,
968 monitors[i].width, monitors[i].height);
973 screen_x11->primary_monitor = 0;
976 #endif /* HAVE_XFREE_XINERAMA */
982 deinit_multihead (GdkScreen *screen)
984 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
986 free_monitors (screen_x11->monitors, screen_x11->n_monitors);
988 screen_x11->n_monitors = 0;
989 screen_x11->monitors = NULL;
993 compare_monitor (GdkX11Monitor *m1,
996 if (m1->geometry.x != m2->geometry.x ||
997 m1->geometry.y != m2->geometry.y ||
998 m1->geometry.width != m2->geometry.width ||
999 m1->geometry.height != m2->geometry.height)
1002 if (m1->width_mm != m2->width_mm ||
1003 m1->height_mm != m2->height_mm)
1006 if (g_strcmp0 (m1->output_name, m2->output_name) != 0)
1009 if (g_strcmp0 (m1->manufacturer, m2->manufacturer) != 0)
1016 compare_monitors (GdkX11Monitor *monitors1, gint n_monitors1,
1017 GdkX11Monitor *monitors2, gint n_monitors2)
1021 if (n_monitors1 != n_monitors2)
1024 for (i = 0; i < n_monitors1; i++)
1026 if (!compare_monitor (monitors1 + i, monitors2 + i))
1034 init_multihead (GdkScreen *screen)
1036 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1037 int opcode, firstevent, firsterror;
1039 /* There are four different implementations of multihead support:
1041 * 1. Fake Xinerama for debugging purposes
1043 * 3. Solaris Xinerama
1044 * 4. XFree86/Xorg Xinerama
1046 * We use them in that order.
1048 if (init_fake_xinerama (screen))
1051 if (init_randr13 (screen))
1054 if (XQueryExtension (GDK_SCREEN_XDISPLAY (screen), "XINERAMA",
1055 &opcode, &firstevent, &firsterror))
1057 if (init_solaris_xinerama (screen))
1060 if (init_xfree_xinerama (screen))
1064 /* No multihead support of any kind for this screen */
1065 screen_x11->n_monitors = 1;
1066 screen_x11->monitors = g_new0 (GdkX11Monitor, 1);
1067 screen_x11->primary_monitor = 0;
1069 init_monitor_geometry (screen_x11->monitors, 0, 0,
1070 WidthOfScreen (screen_x11->xscreen),
1071 HeightOfScreen (screen_x11->xscreen));
1075 _gdk_x11_screen_new (GdkDisplay *display,
1079 GdkScreenX11 *screen_x11;
1080 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1082 screen = g_object_new (GDK_TYPE_SCREEN_X11, NULL);
1084 screen_x11 = GDK_SCREEN_X11 (screen);
1085 screen_x11->display = display;
1086 screen_x11->xdisplay = display_x11->xdisplay;
1087 screen_x11->xscreen = ScreenOfDisplay (display_x11->xdisplay, screen_number);
1088 screen_x11->screen_num = screen_number;
1089 screen_x11->xroot_window = RootWindow (display_x11->xdisplay,screen_number);
1090 screen_x11->wmspec_check_window = None;
1091 /* we want this to be always non-null */
1092 screen_x11->window_manager_name = g_strdup ("unknown");
1094 init_multihead (screen);
1095 init_randr_support (screen);
1097 _gdk_visual_init (screen);
1098 _gdk_windowing_window_init (screen);
1104 * It is important that we first request the selection
1105 * notification, and then setup the initial state of
1106 * is_composited to avoid a race condition here.
1109 _gdk_x11_screen_setup (GdkScreen *screen)
1111 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1113 screen_x11->cm_selection_atom = make_cm_atom (screen_x11->screen_num);
1114 gdk_display_request_selection_notification (screen_x11->display,
1115 screen_x11->cm_selection_atom);
1116 screen_x11->is_composited = check_is_composited (screen_x11->display, screen_x11);
1120 * gdk_screen_is_composited:
1121 * @screen: a #GdkScreen
1123 * Returns whether windows with an RGBA visual can reasonably
1124 * be expected to have their alpha channel drawn correctly on
1127 * On X11 this function returns whether a compositing manager is
1128 * compositing @screen.
1130 * Return value: Whether windows with RGBA visuals can reasonably be
1131 * expected to have their alpha channels drawn correctly on the screen.
1136 gdk_screen_is_composited (GdkScreen *screen)
1138 GdkScreenX11 *screen_x11;
1140 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1142 screen_x11 = GDK_SCREEN_X11 (screen);
1144 return screen_x11->is_composited;
1148 init_randr_support (GdkScreen * screen)
1150 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1152 XSelectInput (GDK_SCREEN_XDISPLAY (screen),
1153 screen_x11->xroot_window,
1154 StructureNotifyMask);
1157 XRRSelectInput (GDK_SCREEN_XDISPLAY (screen),
1158 screen_x11->xroot_window,
1159 RRScreenChangeNotifyMask |
1160 RRCrtcChangeNotifyMask |
1161 RROutputPropertyNotifyMask);
1166 process_monitors_change (GdkScreen *screen)
1168 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1170 GdkX11Monitor *monitors;
1173 n_monitors = screen_x11->n_monitors;
1174 monitors = screen_x11->monitors;
1176 screen_x11->n_monitors = 0;
1177 screen_x11->monitors = NULL;
1179 init_multihead (screen);
1181 changed = !compare_monitors (monitors, n_monitors,
1182 screen_x11->monitors, screen_x11->n_monitors);
1184 free_monitors (monitors, n_monitors);
1187 g_signal_emit_by_name (screen, "monitors-changed");
1191 _gdk_x11_screen_size_changed (GdkScreen *screen,
1196 GdkDisplayX11 *display_x11;
1199 width = gdk_screen_get_width (screen);
1200 height = gdk_screen_get_height (screen);
1203 display_x11 = GDK_DISPLAY_X11 (gdk_screen_get_display (screen));
1205 if (display_x11->have_randr13 && event->type == ConfigureNotify)
1207 g_signal_emit_by_name (screen, "monitors-changed");
1211 XRRUpdateConfiguration (event);
1213 if (event->type == ConfigureNotify)
1215 XConfigureEvent *rcevent = (XConfigureEvent *) event;
1216 Screen *xscreen = gdk_x11_screen_get_xscreen (screen);
1218 xscreen->width = rcevent->width;
1219 xscreen->height = rcevent->height;
1225 process_monitors_change (screen);
1227 if (width != gdk_screen_get_width (screen) ||
1228 height != gdk_screen_get_height (screen))
1229 g_signal_emit_by_name (screen, "size-changed");
1233 _gdk_x11_screen_window_manager_changed (GdkScreen *screen)
1235 g_signal_emit (screen, signals[WINDOW_MANAGER_CHANGED], 0);
1239 _gdk_x11_screen_process_owner_change (GdkScreen *screen,
1243 XFixesSelectionNotifyEvent *selection_event = (XFixesSelectionNotifyEvent *)event;
1244 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1245 Atom xcm_selection_atom = gdk_x11_atom_to_xatom_for_display (screen_x11->display,
1246 screen_x11->cm_selection_atom);
1248 if (selection_event->selection == xcm_selection_atom)
1250 gboolean composited = selection_event->owner != None;
1252 if (composited != screen_x11->is_composited)
1254 screen_x11->is_composited = composited;
1256 g_signal_emit_by_name (screen, "composited-changed");
1263 * _gdk_windowing_substitute_screen_number:
1264 * @display_name : The name of a display, in the form used by
1265 * gdk_display_open (). If %NULL a default value
1266 * will be used. On X11, this is derived from the DISPLAY
1267 * environment variable.
1268 * @screen_number : The number of a screen within the display
1269 * referred to by @display_name.
1271 * Modifies a @display_name to make @screen_number the default
1272 * screen when the display is opened.
1274 * Return value: a newly allocated string holding the resulting
1275 * display name. Free with g_free().
1278 _gdk_windowing_substitute_screen_number (const gchar *display_name,
1285 display_name = getenv ("DISPLAY");
1290 str = g_string_new (display_name);
1292 p = strrchr (str->str, '.');
1293 if (p && p > strchr (str->str, ':'))
1294 g_string_truncate (str, p - str->str);
1296 g_string_append_printf (str, ".%d", screen_number);
1298 return g_string_free (str, FALSE);
1302 * gdk_screen_make_display_name:
1303 * @screen: a #GdkScreen
1305 * Determines the name to pass to gdk_display_open() to get
1306 * a #GdkDisplay with this screen as the default screen.
1308 * Return value: a newly allocated string, free with g_free()
1313 gdk_screen_make_display_name (GdkScreen *screen)
1315 const gchar *old_display;
1317 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1319 old_display = gdk_display_get_name (gdk_screen_get_display (screen));
1321 return _gdk_windowing_substitute_screen_number (old_display,
1322 gdk_screen_get_number (screen));
1326 * gdk_screen_get_active_window
1327 * @screen: a #GdkScreen
1329 * Returns the screen's currently active window.
1331 * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
1332 * on the root window, as described in the <ulink
1333 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1334 * Manager Hints</ulink>. If there is no currently currently active
1335 * window, or the window manager does not support the
1336 * _NET_ACTIVE_WINDOW hint, this function returns %NULL.
1338 * On other platforms, this function may return %NULL, depending on whether
1339 * it is implementable on that platform.
1341 * The returned window should be unrefed using g_object_unref() when
1344 * Return value: the currently active window, or %NULL.
1349 gdk_screen_get_active_window (GdkScreen *screen)
1351 GdkScreenX11 *screen_x11;
1352 GdkWindow *ret = NULL;
1355 gulong nitems_return;
1356 gulong bytes_after_return;
1357 guchar *data = NULL;
1359 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1361 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1362 gdk_atom_intern_static_string ("_NET_ACTIVE_WINDOW")))
1365 screen_x11 = GDK_SCREEN_X11 (screen);
1367 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1368 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1369 "_NET_ACTIVE_WINDOW"),
1370 0, 1, False, XA_WINDOW, &type_return,
1371 &format_return, &nitems_return,
1372 &bytes_after_return, &data)
1375 if ((type_return == XA_WINDOW) && (format_return == 32) && (data))
1377 GdkNativeWindow window = *(GdkNativeWindow *) data;
1381 ret = gdk_window_foreign_new_for_display (screen_x11->display,
1382 *(GdkNativeWindow *) data);
1394 * gdk_screen_get_window_stack:
1395 * @screen: a #GdkScreen
1397 * Returns a #GList of #GdkWindow<!-- -->s representing the current
1400 * On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
1401 * property on the root window, as described in the <ulink
1402 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1403 * Manager Hints</ulink>. If the window manager does not support the
1404 * _NET_CLIENT_LIST_STACKING hint, this function returns %NULL.
1406 * On other platforms, this function may return %NULL, depending on whether
1407 * it is implementable on that platform.
1409 * The returned list is newly allocated and owns references to the
1410 * windows it contains, so it should be freed using g_list_free() and
1411 * its windows unrefed using g_object_unref() when no longer needed.
1413 * Return value: (transfer full) (element-type GdkWindow):
1414 * a list of #GdkWindow<!-- -->s for the current window stack,
1420 gdk_screen_get_window_stack (GdkScreen *screen)
1422 GdkScreenX11 *screen_x11;
1426 gulong nitems_return;
1427 gulong bytes_after_return;
1428 guchar *data = NULL;
1430 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1432 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1433 gdk_atom_intern_static_string ("_NET_CLIENT_LIST_STACKING")))
1436 screen_x11 = GDK_SCREEN_X11 (screen);
1438 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1439 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1440 "_NET_CLIENT_LIST_STACKING"),
1441 0, G_MAXLONG, False, XA_WINDOW, &type_return,
1442 &format_return, &nitems_return,
1443 &bytes_after_return, &data)
1446 if ((type_return == XA_WINDOW) && (format_return == 32) &&
1447 (data) && (nitems_return > 0))
1449 gulong *stack = (gulong *) data;
1453 for (i = 0; i < nitems_return; i++)
1455 win = gdk_window_foreign_new_for_display (screen_x11->display,
1456 (GdkNativeWindow)stack[i]);
1459 ret = g_list_append (ret, win);
1470 /* Sends a ClientMessage to all toplevel client windows */
1472 gdk_event_send_client_message_to_all_recurse (GdkDisplay *display,
1479 unsigned long nitems, after;
1480 unsigned char *data;
1481 Window *ret_children, ret_root, ret_parent;
1482 unsigned int ret_nchildren;
1483 gboolean send = FALSE;
1484 gboolean found = FALSE;
1485 gboolean result = FALSE;
1488 gdk_error_trap_push ();
1490 if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
1491 gdk_x11_get_xatom_by_name_for_display (display, "WM_STATE"),
1492 0, 0, False, AnyPropertyType,
1493 &type, &format, &nitems, &after, &data) != Success)
1503 /* OK, we're all set, now let's find some windows to send this to */
1504 if (!XQueryTree (GDK_DISPLAY_XDISPLAY (display), xid,
1505 &ret_root, &ret_parent,
1506 &ret_children, &ret_nchildren))
1509 for(i = 0; i < ret_nchildren; i++)
1510 if (gdk_event_send_client_message_to_all_recurse (display, xev, ret_children[i], level + 1))
1513 XFree (ret_children);
1516 if (send || (!found && (level == 1)))
1518 xev->xclient.window = xid;
1519 _gdk_send_xevent (display, xid, False, NoEventMask, xev);
1522 result = send || found;
1525 gdk_error_trap_pop_ignored ();
1531 * gdk_screen_broadcast_client_message:
1532 * @screen: the #GdkScreen where the event will be broadcasted.
1533 * @event: the #GdkEvent.
1535 * On X11, sends an X ClientMessage event to all toplevel windows on
1538 * Toplevel windows are determined by checking for the WM_STATE property,
1539 * as described in the Inter-Client Communication Conventions Manual (ICCCM).
1540 * If no windows are found with the WM_STATE property set, the message is
1541 * sent to all children of the root window.
1543 * On Windows, broadcasts a message registered with the name
1544 * GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of
1545 * data is limited to one long, i.e. four bytes.
1551 gdk_screen_broadcast_client_message (GdkScreen *screen,
1555 GdkWindow *root_window;
1557 g_return_if_fail (event != NULL);
1559 root_window = gdk_screen_get_root_window (screen);
1561 /* Set up our event to send, with the exception of its target window */
1562 sev.xclient.type = ClientMessage;
1563 sev.xclient.display = GDK_WINDOW_XDISPLAY (root_window);
1564 sev.xclient.format = event->client.data_format;
1565 memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
1566 sev.xclient.message_type =
1567 gdk_x11_atom_to_xatom_for_display (GDK_WINDOW_DISPLAY (root_window),
1568 event->client.message_type);
1570 gdk_event_send_client_message_to_all_recurse (gdk_screen_get_display (screen),
1572 GDK_WINDOW_XID (root_window),
1577 check_transform (const gchar *xsettings_name,
1581 if (!g_value_type_transformable (src_type, dest_type))
1583 g_warning ("Cannot transform xsetting %s of type %s to type %s\n",
1585 g_type_name (src_type),
1586 g_type_name (dest_type));
1594 * gdk_screen_get_setting:
1595 * @screen: the #GdkScreen where the setting is located
1596 * @name: the name of the setting
1597 * @value: location to store the value of the setting
1599 * Retrieves a desktop-wide setting such as double-click time
1600 * for the #GdkScreen @screen.
1602 * FIXME needs a list of valid settings here, or a link to
1605 * Returns: %TRUE if the setting existed and a value was stored
1606 * in @value, %FALSE otherwise.
1611 gdk_screen_get_setting (GdkScreen *screen,
1616 const char *xsettings_name = NULL;
1617 XSettingsResult result;
1618 XSettingsSetting *setting = NULL;
1619 GdkScreenX11 *screen_x11;
1620 gboolean success = FALSE;
1622 GValue tmp_val = { 0, };
1624 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1626 screen_x11 = GDK_SCREEN_X11 (screen);
1628 for (i = 0; i < GDK_SETTINGS_N_ELEMENTS(); i++)
1629 if (strcmp (GDK_SETTINGS_GDK_NAME (i), name) == 0)
1631 xsettings_name = GDK_SETTINGS_X_NAME (i);
1635 if (!xsettings_name)
1638 result = xsettings_client_get_setting (screen_x11->xsettings_client,
1639 xsettings_name, &setting);
1640 if (result != XSETTINGS_SUCCESS)
1643 switch (setting->type)
1645 case XSETTINGS_TYPE_INT:
1646 if (check_transform (xsettings_name, G_TYPE_INT, G_VALUE_TYPE (value)))
1648 g_value_init (&tmp_val, G_TYPE_INT);
1649 g_value_set_int (&tmp_val, setting->data.v_int);
1650 g_value_transform (&tmp_val, value);
1655 case XSETTINGS_TYPE_STRING:
1656 if (check_transform (xsettings_name, G_TYPE_STRING, G_VALUE_TYPE (value)))
1658 g_value_init (&tmp_val, G_TYPE_STRING);
1659 g_value_set_string (&tmp_val, setting->data.v_string);
1660 g_value_transform (&tmp_val, value);
1665 case XSETTINGS_TYPE_COLOR:
1666 if (!check_transform (xsettings_name, GDK_TYPE_COLOR, G_VALUE_TYPE (value)))
1670 g_value_init (&tmp_val, GDK_TYPE_COLOR);
1673 color.red = setting->data.v_color.red;
1674 color.green = setting->data.v_color.green;
1675 color.blue = setting->data.v_color.blue;
1677 g_value_set_boxed (&tmp_val, &color);
1679 g_value_transform (&tmp_val, value);
1686 g_value_unset (&tmp_val);
1690 xsettings_setting_free (setting);
1695 return _gdk_x11_get_xft_setting (screen, name, value);
1699 cleanup_atoms(gpointer data)
1701 NetWmSupportedAtoms *supported_atoms = data;
1702 if (supported_atoms->atoms)
1703 XFree (supported_atoms->atoms);
1704 g_free (supported_atoms);
1708 fetch_net_wm_check_window (GdkScreen *screen)
1710 GdkScreenX11 *screen_x11;
1711 GdkDisplay *display;
1721 screen_x11 = GDK_SCREEN_X11 (screen);
1722 display = screen_x11->display;
1724 g_return_if_fail (GDK_DISPLAY_X11 (display)->trusted_client);
1726 g_get_current_time (&tv);
1728 if (ABS (tv.tv_sec - screen_x11->last_wmspec_check_time) < 15)
1729 return; /* we've checked recently */
1731 screen_x11->last_wmspec_check_time = tv.tv_sec;
1734 XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1735 gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
1736 0, G_MAXLONG, False, XA_WINDOW, &type, &format,
1737 &n_items, &bytes_after, &data);
1739 if (type != XA_WINDOW)
1746 xwindow = (Window *)data;
1748 if (screen_x11->wmspec_check_window == *xwindow)
1754 gdk_error_trap_push ();
1756 /* Find out if this WM goes away, so we can reset everything. */
1757 XSelectInput (screen_x11->xdisplay, *xwindow, StructureNotifyMask);
1759 error = gdk_error_trap_pop ();
1762 screen_x11->wmspec_check_window = *xwindow;
1763 screen_x11->need_refetch_net_supported = TRUE;
1764 screen_x11->need_refetch_wm_name = TRUE;
1766 /* Careful, reentrancy */
1767 _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
1769 else if (error == BadWindow)
1771 /* Leftover property, try again immediately, new wm may be starting up */
1772 screen_x11->last_wmspec_check_time = 0;
1779 * gdk_x11_screen_supports_net_wm_hint:
1780 * @screen: the relevant #GdkScreen.
1781 * @property: a property atom.
1783 * This function is specific to the X11 backend of GDK, and indicates
1784 * whether the window manager supports a certain hint from the
1785 * Extended Window Manager Hints Specification. You can find this
1787 * <ulink url="http://www.freedesktop.org">http://www.freedesktop.org</ulink>.
1789 * When using this function, keep in mind that the window manager
1790 * can change over time; so you shouldn't use this function in
1791 * a way that impacts persistent application state. A common bug
1792 * is that your application can start up before the window manager
1793 * does when the user logs in, and before the window manager starts
1794 * gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property.
1795 * You can monitor the window_manager_changed signal on #GdkScreen to detect
1796 * a window manager change.
1798 * Return value: %TRUE if the window manager supports @property
1803 gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
1807 GdkScreenX11 *screen_x11;
1808 NetWmSupportedAtoms *supported_atoms;
1809 GdkDisplay *display;
1811 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1813 screen_x11 = GDK_SCREEN_X11 (screen);
1814 display = screen_x11->display;
1816 if (!G_LIKELY (GDK_DISPLAY_X11 (display)->trusted_client))
1819 supported_atoms = g_object_get_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms");
1820 if (!supported_atoms)
1822 supported_atoms = g_new0 (NetWmSupportedAtoms, 1);
1823 g_object_set_data_full (G_OBJECT (screen), "gdk-net-wm-supported-atoms", supported_atoms, cleanup_atoms);
1826 fetch_net_wm_check_window (screen);
1828 if (screen_x11->wmspec_check_window == None)
1831 if (screen_x11->need_refetch_net_supported)
1833 /* WM has changed since we last got the supported list,
1840 screen_x11->need_refetch_net_supported = FALSE;
1842 if (supported_atoms->atoms)
1843 XFree (supported_atoms->atoms);
1845 supported_atoms->atoms = NULL;
1846 supported_atoms->n_atoms = 0;
1848 XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
1849 gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"),
1850 0, G_MAXLONG, False, XA_ATOM, &type, &format,
1851 &supported_atoms->n_atoms, &bytes_after,
1852 (guchar **)&supported_atoms->atoms);
1854 if (type != XA_ATOM)
1858 if (supported_atoms->atoms == NULL)
1862 while (i < supported_atoms->n_atoms)
1864 if (supported_atoms->atoms[i] == gdk_x11_atom_to_xatom_for_display (display, property))
1874 * gdk_net_wm_supports:
1875 * @property: a property atom.
1877 * This function is specific to the X11 backend of GDK, and indicates
1878 * whether the window manager for the default screen supports a certain
1879 * hint from the Extended Window Manager Hints Specification. See
1880 * gdk_x11_screen_supports_net_wm_hint() for complete details.
1882 * Return value: %TRUE if the window manager supports @property
1885 gdk_net_wm_supports (GdkAtom property)
1887 return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
1891 refcounted_grab_server (Display *xdisplay)
1893 GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
1895 gdk_x11_display_grab (display);
1899 refcounted_ungrab_server (Display *xdisplay)
1901 GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
1903 gdk_x11_display_ungrab (display);
1906 static GdkFilterReturn
1907 gdk_xsettings_client_event_filter (GdkXEvent *xevent,
1911 GdkScreenX11 *screen = data;
1913 if (xsettings_client_process_event (screen->xsettings_client, (XEvent *)xevent))
1914 return GDK_FILTER_REMOVE;
1916 return GDK_FILTER_CONTINUE;
1920 gdk_xsettings_watch_cb (Window window,
1926 GdkScreen *screen = cb_data;
1928 gdkwin = gdk_window_lookup_for_display (gdk_screen_get_display (screen), window);
1933 g_object_ref (gdkwin);
1936 gdkwin = gdk_window_foreign_new_for_display (gdk_screen_get_display (screen), window);
1938 /* gdk_window_foreign_new_for_display() can fail and return NULL if the
1939 * window has already been destroyed.
1945 gdk_window_add_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
1951 /* gdkwin should not be NULL here, since if starting the watch succeeded
1952 * we have a reference on the window. It might mean that the caller didn't
1953 * remove the watch when it got a DestroyNotify event. Or maybe the
1954 * caller ignored the return value when starting the watch failed.
1956 g_warning ("gdk_xsettings_watch_cb(): Couldn't find window to unwatch");
1960 gdk_window_remove_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
1961 g_object_unref (gdkwin);
1968 gdk_xsettings_notify_cb (const char *name,
1969 XSettingsAction action,
1970 XSettingsSetting *setting,
1974 GdkScreen *screen = data;
1975 GdkScreenX11 *screen_x11 = data;
1978 if (screen_x11->xsettings_in_init)
1981 new_event.type = GDK_SETTING;
1982 new_event.setting.window = gdk_screen_get_root_window (screen);
1983 new_event.setting.send_event = FALSE;
1984 new_event.setting.name = NULL;
1986 for (i = 0; i < GDK_SETTINGS_N_ELEMENTS() ; i++)
1987 if (strcmp (GDK_SETTINGS_X_NAME (i), name) == 0)
1989 new_event.setting.name = (char*) GDK_SETTINGS_GDK_NAME (i);
1993 if (!new_event.setting.name)
1998 case XSETTINGS_ACTION_NEW:
1999 new_event.setting.action = GDK_SETTING_ACTION_NEW;
2001 case XSETTINGS_ACTION_CHANGED:
2002 new_event.setting.action = GDK_SETTING_ACTION_CHANGED;
2004 case XSETTINGS_ACTION_DELETED:
2005 new_event.setting.action = GDK_SETTING_ACTION_DELETED;
2009 gdk_event_put (&new_event);
2013 _gdk_screen_x11_events_init (GdkScreen *screen)
2015 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
2017 /* Keep a flag to avoid extra notifies that we don't need
2019 screen_x11->xsettings_in_init = TRUE;
2020 screen_x11->xsettings_client = xsettings_client_new_with_grab_funcs (screen_x11->xdisplay,
2021 screen_x11->screen_num,
2022 gdk_xsettings_notify_cb,
2023 gdk_xsettings_watch_cb,
2025 refcounted_grab_server,
2026 refcounted_ungrab_server);
2027 screen_x11->xsettings_in_init = FALSE;
2031 * gdk_x11_screen_get_window_manager_name:
2032 * @screen: a #GdkScreen
2034 * Returns the name of the window manager for @screen.
2036 * Return value: the name of the window manager screen @screen, or
2037 * "unknown" if the window manager is unknown. The string is owned by GDK
2038 * and should not be freed.
2043 gdk_x11_screen_get_window_manager_name (GdkScreen *screen)
2045 GdkScreenX11 *screen_x11;
2047 screen_x11 = GDK_SCREEN_X11 (screen);
2049 if (!G_LIKELY (GDK_DISPLAY_X11 (screen_x11->display)->trusted_client))
2050 return screen_x11->window_manager_name;
2052 fetch_net_wm_check_window (screen);
2054 if (screen_x11->need_refetch_wm_name)
2056 /* Get the name of the window manager */
2057 screen_x11->need_refetch_wm_name = FALSE;
2059 g_free (screen_x11->window_manager_name);
2060 screen_x11->window_manager_name = g_strdup ("unknown");
2062 if (screen_x11->wmspec_check_window != None)
2072 gdk_error_trap_push ();
2074 XGetWindowProperty (GDK_DISPLAY_XDISPLAY (screen_x11->display),
2075 screen_x11->wmspec_check_window,
2076 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2078 0, G_MAXLONG, False,
2079 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2082 &n_items, &bytes_after,
2085 gdk_error_trap_pop_ignored ();
2089 g_free (screen_x11->window_manager_name);
2090 screen_x11->window_manager_name = g_strdup (name);
2096 return GDK_SCREEN_X11 (screen)->window_manager_name;