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 with an alpha
545 * 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 with an alpha channel.
587 * See the docs for gdk_screen_get_rgba_colormap() for caveats.
589 * Return value: (transfer none): a visual to use for windows with an
590 * alpha channel or %NULL if the capability is not available.
595 gdk_screen_get_rgba_visual (GdkScreen *screen)
597 GdkScreenX11 *screen_x11;
599 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
601 screen_x11 = GDK_SCREEN_X11 (screen);
603 return screen_x11->rgba_visual;
607 * gdk_x11_screen_get_xscreen:
608 * @screen: a #GdkScreen.
609 * @returns: (transfer none): an Xlib <type>Screen*</type>
611 * Returns the screen of a #GdkScreen.
616 gdk_x11_screen_get_xscreen (GdkScreen *screen)
618 return GDK_SCREEN_X11 (screen)->xscreen;
622 * gdk_x11_screen_get_screen_number:
623 * @screen: a #GdkScreen.
624 * @returns: the position of @screen among the screens of
627 * Returns the index of a #GdkScreen.
632 gdk_x11_screen_get_screen_number (GdkScreen *screen)
634 return GDK_SCREEN_X11 (screen)->screen_num;
638 check_is_composited (GdkDisplay *display,
639 GdkScreenX11 *screen_x11)
641 Atom xselection = gdk_x11_atom_to_xatom_for_display (display, screen_x11->cm_selection_atom);
644 xwindow = XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display), xselection);
646 return xwindow != None;
650 make_cm_atom (int screen_number)
652 gchar *name = g_strdup_printf ("_NET_WM_CM_S%d", screen_number);
653 GdkAtom atom = gdk_atom_intern (name, FALSE);
659 init_monitor_geometry (GdkX11Monitor *monitor,
660 int x, int y, int width, int height)
662 monitor->geometry.x = x;
663 monitor->geometry.y = y;
664 monitor->geometry.width = width;
665 monitor->geometry.height = height;
667 monitor->output = None;
668 monitor->width_mm = -1;
669 monitor->height_mm = -1;
670 monitor->output_name = NULL;
671 monitor->manufacturer = NULL;
675 init_fake_xinerama (GdkScreen *screen)
677 #ifdef G_ENABLE_DEBUG
678 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
679 XSetWindowAttributes atts;
683 if (!(_gdk_debug_flags & GDK_DEBUG_XINERAMA))
686 /* Fake Xinerama mode by splitting the screen into 4 monitors.
687 * Also draw a little cross to make the monitor boundaries visible.
689 w = WidthOfScreen (screen_x11->xscreen);
690 h = HeightOfScreen (screen_x11->xscreen);
692 screen_x11->n_monitors = 4;
693 screen_x11->monitors = g_new0 (GdkX11Monitor, 4);
694 init_monitor_geometry (&screen_x11->monitors[0], 0, 0, w / 2, h / 2);
695 init_monitor_geometry (&screen_x11->monitors[1], w / 2, 0, w / 2, h / 2);
696 init_monitor_geometry (&screen_x11->monitors[2], 0, h / 2, w / 2, h / 2);
697 init_monitor_geometry (&screen_x11->monitors[3], w / 2, h / 2, w / 2, h / 2);
699 atts.override_redirect = 1;
700 atts.background_pixel = WhitePixel(GDK_SCREEN_XDISPLAY (screen),
701 screen_x11->screen_num);
702 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
703 screen_x11->xroot_window, 0, h / 2, w, 1, 0,
704 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
705 screen_x11->screen_num),
707 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
708 screen_x11->screen_num),
709 CWOverrideRedirect|CWBackPixel,
711 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
712 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
713 screen_x11->xroot_window, w/2 , 0, 1, h, 0,
714 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
715 screen_x11->screen_num),
717 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
718 screen_x11->screen_num),
719 CWOverrideRedirect|CWBackPixel,
721 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
729 free_monitors (GdkX11Monitor *monitors,
734 for (i = 0; i < n_monitors; ++i)
736 g_free (monitors[i].output_name);
737 g_free (monitors[i].manufacturer);
745 monitor_compare_function (GdkX11Monitor *monitor1,
746 GdkX11Monitor *monitor2)
748 /* Sort the leftmost/topmost monitors first.
749 * For "cloned" monitors, sort the bigger ones first
750 * (giving preference to taller monitors over wider
754 if (monitor1->geometry.x != monitor2->geometry.x)
755 return monitor1->geometry.x - monitor2->geometry.x;
757 if (monitor1->geometry.y != monitor2->geometry.y)
758 return monitor1->geometry.y - monitor2->geometry.y;
760 if (monitor1->geometry.height != monitor2->geometry.height)
761 return - (monitor1->geometry.height - monitor2->geometry.height);
763 if (monitor1->geometry.width != monitor2->geometry.width)
764 return - (monitor1->geometry.width - monitor2->geometry.width);
771 init_randr13 (GdkScreen *screen)
774 GdkDisplay *display = gdk_screen_get_display (screen);
775 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
776 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
777 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
778 XRRScreenResources *resources;
779 RROutput primary_output;
780 RROutput first_output = None;
783 gboolean randr12_compat = FALSE;
785 if (!display_x11->have_randr13)
788 resources = XRRGetScreenResourcesCurrent (screen_x11->xdisplay,
789 screen_x11->xroot_window);
793 monitors = g_array_sized_new (FALSE, TRUE, sizeof (GdkX11Monitor),
796 for (i = 0; i < resources->noutput; ++i)
798 XRROutputInfo *output =
799 XRRGetOutputInfo (dpy, resources, resources->outputs[i]);
801 /* Non RandR1.2 X driver have output name "default" */
802 randr12_compat |= !g_strcmp0 (output->name, "default");
804 if (output->connection == RR_Disconnected)
806 XRRFreeOutputInfo (output);
812 GdkX11Monitor monitor;
813 XRRCrtcInfo *crtc = XRRGetCrtcInfo (dpy, resources, output->crtc);
815 monitor.geometry.x = crtc->x;
816 monitor.geometry.y = crtc->y;
817 monitor.geometry.width = crtc->width;
818 monitor.geometry.height = crtc->height;
820 monitor.output = resources->outputs[i];
821 monitor.width_mm = output->mm_width;
822 monitor.height_mm = output->mm_height;
823 monitor.output_name = g_strdup (output->name);
824 /* FIXME: need EDID parser */
825 monitor.manufacturer = NULL;
827 g_array_append_val (monitors, monitor);
829 XRRFreeCrtcInfo (crtc);
832 XRRFreeOutputInfo (output);
835 if (resources->noutput > 0)
836 first_output = resources->outputs[0];
838 XRRFreeScreenResources (resources);
840 /* non RandR 1.2 X driver doesn't return any usable multihead data */
843 guint n_monitors = monitors->len;
845 free_monitors ((GdkX11Monitor *)g_array_free (monitors, FALSE),
851 g_array_sort (monitors,
852 (GCompareFunc) monitor_compare_function);
853 screen_x11->n_monitors = monitors->len;
854 screen_x11->monitors = (GdkX11Monitor *)g_array_free (monitors, FALSE);
856 screen_x11->primary_monitor = 0;
858 primary_output = XRRGetOutputPrimary (screen_x11->xdisplay,
859 screen_x11->xroot_window);
861 for (i = 0; i < screen_x11->n_monitors; ++i)
863 if (screen_x11->monitors[i].output == primary_output)
865 screen_x11->primary_monitor = i;
869 /* No RandR1.3+ available or no primary set, fall back to prefer LVDS as primary if present */
870 if (primary_output == None &&
871 g_ascii_strncasecmp (screen_x11->monitors[i].output_name, "LVDS", 4) == 0)
873 screen_x11->primary_monitor = i;
877 /* No primary specified and no LVDS found */
878 if (screen_x11->monitors[i].output == first_output)
879 screen_x11->primary_monitor = i;
882 return screen_x11->n_monitors > 0;
889 init_solaris_xinerama (GdkScreen *screen)
891 #ifdef HAVE_SOLARIS_XINERAMA
892 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
893 int screen_no = gdk_screen_get_number (screen);
894 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
895 XRectangle monitors[MAXFRAMEBUFFERS];
896 unsigned char hints[16];
901 if (!XineramaGetState (dpy, screen_no))
904 result = XineramaGetInfo (dpy, screen_no, monitors, hints, &n_monitors);
906 /* Yes I know it should be Success but the current implementation
907 * returns the num of monitor
914 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
915 screen_x11->n_monitors = n_monitors;
917 for (i = 0; i < n_monitors; i++)
919 init_monitor_geometry (&screen_x11->monitors[i],
920 monitors[i].x, monitors[i].y,
921 monitors[i].width, monitors[i].height);
924 screen_x11->primary_monitor = 0;
927 #endif /* HAVE_SOLARIS_XINERAMA */
933 init_xfree_xinerama (GdkScreen *screen)
935 #ifdef HAVE_XFREE_XINERAMA
936 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
937 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
938 XineramaScreenInfo *monitors;
941 if (!XineramaIsActive (dpy))
944 monitors = XineramaQueryScreens (dpy, &n_monitors);
946 if (n_monitors <= 0 || monitors == NULL)
948 /* If Xinerama doesn't think we have any monitors, try acting as
949 * though we had no Xinerama. If the "no monitors" condition
950 * is because XRandR 1.2 is currently switching between CRTCs,
951 * we'll be notified again when we have our monitor back,
952 * and can go back into Xinerama-ish mode at that point.
960 screen_x11->n_monitors = n_monitors;
961 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
963 for (i = 0; i < n_monitors; ++i)
965 init_monitor_geometry (&screen_x11->monitors[i],
966 monitors[i].x_org, monitors[i].y_org,
967 monitors[i].width, monitors[i].height);
972 screen_x11->primary_monitor = 0;
975 #endif /* HAVE_XFREE_XINERAMA */
981 deinit_multihead (GdkScreen *screen)
983 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
985 free_monitors (screen_x11->monitors, screen_x11->n_monitors);
987 screen_x11->n_monitors = 0;
988 screen_x11->monitors = NULL;
992 compare_monitor (GdkX11Monitor *m1,
995 if (m1->geometry.x != m2->geometry.x ||
996 m1->geometry.y != m2->geometry.y ||
997 m1->geometry.width != m2->geometry.width ||
998 m1->geometry.height != m2->geometry.height)
1001 if (m1->width_mm != m2->width_mm ||
1002 m1->height_mm != m2->height_mm)
1005 if (g_strcmp0 (m1->output_name, m2->output_name) != 0)
1008 if (g_strcmp0 (m1->manufacturer, m2->manufacturer) != 0)
1015 compare_monitors (GdkX11Monitor *monitors1, gint n_monitors1,
1016 GdkX11Monitor *monitors2, gint n_monitors2)
1020 if (n_monitors1 != n_monitors2)
1023 for (i = 0; i < n_monitors1; i++)
1025 if (!compare_monitor (monitors1 + i, monitors2 + i))
1033 init_multihead (GdkScreen *screen)
1035 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1036 int opcode, firstevent, firsterror;
1038 /* There are four different implementations of multihead support:
1040 * 1. Fake Xinerama for debugging purposes
1042 * 3. Solaris Xinerama
1043 * 4. XFree86/Xorg Xinerama
1045 * We use them in that order.
1047 if (init_fake_xinerama (screen))
1050 if (init_randr13 (screen))
1053 if (XQueryExtension (GDK_SCREEN_XDISPLAY (screen), "XINERAMA",
1054 &opcode, &firstevent, &firsterror))
1056 if (init_solaris_xinerama (screen))
1059 if (init_xfree_xinerama (screen))
1063 /* No multihead support of any kind for this screen */
1064 screen_x11->n_monitors = 1;
1065 screen_x11->monitors = g_new0 (GdkX11Monitor, 1);
1066 screen_x11->primary_monitor = 0;
1068 init_monitor_geometry (screen_x11->monitors, 0, 0,
1069 WidthOfScreen (screen_x11->xscreen),
1070 HeightOfScreen (screen_x11->xscreen));
1074 _gdk_x11_screen_new (GdkDisplay *display,
1078 GdkScreenX11 *screen_x11;
1079 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1081 screen = g_object_new (GDK_TYPE_SCREEN_X11, NULL);
1083 screen_x11 = GDK_SCREEN_X11 (screen);
1084 screen_x11->display = display;
1085 screen_x11->xdisplay = display_x11->xdisplay;
1086 screen_x11->xscreen = ScreenOfDisplay (display_x11->xdisplay, screen_number);
1087 screen_x11->screen_num = screen_number;
1088 screen_x11->xroot_window = RootWindow (display_x11->xdisplay,screen_number);
1089 screen_x11->wmspec_check_window = None;
1090 /* we want this to be always non-null */
1091 screen_x11->window_manager_name = g_strdup ("unknown");
1093 init_multihead (screen);
1094 init_randr_support (screen);
1096 _gdk_visual_init (screen);
1097 _gdk_windowing_window_init (screen);
1103 * It is important that we first request the selection
1104 * notification, and then setup the initial state of
1105 * is_composited to avoid a race condition here.
1108 _gdk_x11_screen_setup (GdkScreen *screen)
1110 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1112 screen_x11->cm_selection_atom = make_cm_atom (screen_x11->screen_num);
1113 gdk_display_request_selection_notification (screen_x11->display,
1114 screen_x11->cm_selection_atom);
1115 screen_x11->is_composited = check_is_composited (screen_x11->display, screen_x11);
1119 * gdk_screen_is_composited:
1120 * @screen: a #GdkScreen
1122 * Returns whether windows with an RGBA visual can reasonably
1123 * be expected to have their alpha channel drawn correctly on
1126 * On X11 this function returns whether a compositing manager is
1127 * compositing @screen.
1129 * Return value: Whether windows with RGBA visuals can reasonably be
1130 * expected to have their alpha channels drawn correctly on the screen.
1135 gdk_screen_is_composited (GdkScreen *screen)
1137 GdkScreenX11 *screen_x11;
1139 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1141 screen_x11 = GDK_SCREEN_X11 (screen);
1143 return screen_x11->is_composited;
1147 init_randr_support (GdkScreen * screen)
1149 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1151 XSelectInput (GDK_SCREEN_XDISPLAY (screen),
1152 screen_x11->xroot_window,
1153 StructureNotifyMask);
1156 XRRSelectInput (GDK_SCREEN_XDISPLAY (screen),
1157 screen_x11->xroot_window,
1158 RRScreenChangeNotifyMask |
1159 RRCrtcChangeNotifyMask |
1160 RROutputPropertyNotifyMask);
1165 process_monitors_change (GdkScreen *screen)
1167 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1169 GdkX11Monitor *monitors;
1172 n_monitors = screen_x11->n_monitors;
1173 monitors = screen_x11->monitors;
1175 screen_x11->n_monitors = 0;
1176 screen_x11->monitors = NULL;
1178 init_multihead (screen);
1180 changed = !compare_monitors (monitors, n_monitors,
1181 screen_x11->monitors, screen_x11->n_monitors);
1183 free_monitors (monitors, n_monitors);
1186 g_signal_emit_by_name (screen, "monitors-changed");
1190 _gdk_x11_screen_size_changed (GdkScreen *screen,
1195 GdkDisplayX11 *display_x11;
1198 width = gdk_screen_get_width (screen);
1199 height = gdk_screen_get_height (screen);
1202 display_x11 = GDK_DISPLAY_X11 (gdk_screen_get_display (screen));
1204 if (display_x11->have_randr13 && event->type == ConfigureNotify)
1206 g_signal_emit_by_name (screen, "monitors-changed");
1210 XRRUpdateConfiguration (event);
1212 if (event->type == ConfigureNotify)
1214 XConfigureEvent *rcevent = (XConfigureEvent *) event;
1215 Screen *xscreen = gdk_x11_screen_get_xscreen (screen);
1217 xscreen->width = rcevent->width;
1218 xscreen->height = rcevent->height;
1224 process_monitors_change (screen);
1226 if (width != gdk_screen_get_width (screen) ||
1227 height != gdk_screen_get_height (screen))
1228 g_signal_emit_by_name (screen, "size-changed");
1232 _gdk_x11_screen_window_manager_changed (GdkScreen *screen)
1234 g_signal_emit (screen, signals[WINDOW_MANAGER_CHANGED], 0);
1238 _gdk_x11_screen_process_owner_change (GdkScreen *screen,
1242 XFixesSelectionNotifyEvent *selection_event = (XFixesSelectionNotifyEvent *)event;
1243 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1244 Atom xcm_selection_atom = gdk_x11_atom_to_xatom_for_display (screen_x11->display,
1245 screen_x11->cm_selection_atom);
1247 if (selection_event->selection == xcm_selection_atom)
1249 gboolean composited = selection_event->owner != None;
1251 if (composited != screen_x11->is_composited)
1253 screen_x11->is_composited = composited;
1255 g_signal_emit_by_name (screen, "composited-changed");
1262 * _gdk_windowing_substitute_screen_number:
1263 * @display_name: The name of a display, in the form used by
1264 * gdk_display_open (). If %NULL a default value
1265 * will be used. On X11, this is derived from the DISPLAY
1266 * environment variable.
1267 * @screen_number: The number of a screen within the display
1268 * referred to by @display_name.
1270 * Modifies a @display_name to make @screen_number the default
1271 * screen when the display is opened.
1273 * Return value: a newly allocated string holding the resulting
1274 * display name. Free with g_free().
1277 _gdk_windowing_substitute_screen_number (const gchar *display_name,
1284 display_name = getenv ("DISPLAY");
1289 str = g_string_new (display_name);
1291 p = strrchr (str->str, '.');
1292 if (p && p > strchr (str->str, ':'))
1293 g_string_truncate (str, p - str->str);
1295 g_string_append_printf (str, ".%d", screen_number);
1297 return g_string_free (str, FALSE);
1301 * gdk_screen_make_display_name:
1302 * @screen: a #GdkScreen
1304 * Determines the name to pass to gdk_display_open() to get
1305 * a #GdkDisplay with this screen as the default screen.
1307 * Return value: a newly allocated string, free with g_free()
1312 gdk_screen_make_display_name (GdkScreen *screen)
1314 const gchar *old_display;
1316 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1318 old_display = gdk_display_get_name (gdk_screen_get_display (screen));
1320 return _gdk_windowing_substitute_screen_number (old_display,
1321 gdk_screen_get_number (screen));
1325 * gdk_screen_get_active_window
1326 * @screen: a #GdkScreen
1328 * Returns the screen's currently active window.
1330 * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
1331 * on the root window, as described in the <ulink
1332 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1333 * Manager Hints</ulink>. If there is no currently currently active
1334 * window, or the window manager does not support the
1335 * _NET_ACTIVE_WINDOW hint, this function returns %NULL.
1337 * On other platforms, this function may return %NULL, depending on whether
1338 * it is implementable on that platform.
1340 * The returned window should be unrefed using g_object_unref() when
1343 * Return value: the currently active window, or %NULL.
1348 gdk_screen_get_active_window (GdkScreen *screen)
1350 GdkScreenX11 *screen_x11;
1351 GdkWindow *ret = NULL;
1354 gulong nitems_return;
1355 gulong bytes_after_return;
1356 guchar *data = NULL;
1358 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1360 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1361 gdk_atom_intern_static_string ("_NET_ACTIVE_WINDOW")))
1364 screen_x11 = GDK_SCREEN_X11 (screen);
1366 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1367 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1368 "_NET_ACTIVE_WINDOW"),
1369 0, 1, False, XA_WINDOW, &type_return,
1370 &format_return, &nitems_return,
1371 &bytes_after_return, &data)
1374 if ((type_return == XA_WINDOW) && (format_return == 32) && (data))
1376 GdkNativeWindow window = *(GdkNativeWindow *) data;
1380 ret = gdk_window_foreign_new_for_display (screen_x11->display,
1381 *(GdkNativeWindow *) data);
1393 * gdk_screen_get_window_stack:
1394 * @screen: a #GdkScreen
1396 * Returns a #GList of #GdkWindow<!-- -->s representing the current
1399 * On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
1400 * property on the root window, as described in the <ulink
1401 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1402 * Manager Hints</ulink>. If the window manager does not support the
1403 * _NET_CLIENT_LIST_STACKING hint, this function returns %NULL.
1405 * On other platforms, this function may return %NULL, depending on whether
1406 * it is implementable on that platform.
1408 * The returned list is newly allocated and owns references to the
1409 * windows it contains, so it should be freed using g_list_free() and
1410 * its windows unrefed using g_object_unref() when no longer needed.
1412 * Return value: (transfer full) (element-type GdkWindow):
1413 * a list of #GdkWindow<!-- -->s for the current window stack,
1419 gdk_screen_get_window_stack (GdkScreen *screen)
1421 GdkScreenX11 *screen_x11;
1425 gulong nitems_return;
1426 gulong bytes_after_return;
1427 guchar *data = NULL;
1429 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1431 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1432 gdk_atom_intern_static_string ("_NET_CLIENT_LIST_STACKING")))
1435 screen_x11 = GDK_SCREEN_X11 (screen);
1437 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1438 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1439 "_NET_CLIENT_LIST_STACKING"),
1440 0, G_MAXLONG, False, XA_WINDOW, &type_return,
1441 &format_return, &nitems_return,
1442 &bytes_after_return, &data)
1445 if ((type_return == XA_WINDOW) && (format_return == 32) &&
1446 (data) && (nitems_return > 0))
1448 gulong *stack = (gulong *) data;
1452 for (i = 0; i < nitems_return; i++)
1454 win = gdk_window_foreign_new_for_display (screen_x11->display,
1455 (GdkNativeWindow)stack[i]);
1458 ret = g_list_append (ret, win);
1469 /* Sends a ClientMessage to all toplevel client windows */
1471 gdk_event_send_client_message_to_all_recurse (GdkDisplay *display,
1478 unsigned long nitems, after;
1479 unsigned char *data;
1480 Window *ret_children, ret_root, ret_parent;
1481 unsigned int ret_nchildren;
1482 gboolean send = FALSE;
1483 gboolean found = FALSE;
1484 gboolean result = FALSE;
1487 gdk_error_trap_push ();
1489 if (XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), xid,
1490 gdk_x11_get_xatom_by_name_for_display (display, "WM_STATE"),
1491 0, 0, False, AnyPropertyType,
1492 &type, &format, &nitems, &after, &data) != Success)
1502 /* OK, we're all set, now let's find some windows to send this to */
1503 if (!XQueryTree (GDK_DISPLAY_XDISPLAY (display), xid,
1504 &ret_root, &ret_parent,
1505 &ret_children, &ret_nchildren))
1508 for(i = 0; i < ret_nchildren; i++)
1509 if (gdk_event_send_client_message_to_all_recurse (display, xev, ret_children[i], level + 1))
1512 XFree (ret_children);
1515 if (send || (!found && (level == 1)))
1517 xev->xclient.window = xid;
1518 _gdk_send_xevent (display, xid, False, NoEventMask, xev);
1521 result = send || found;
1524 gdk_error_trap_pop_ignored ();
1530 * gdk_screen_broadcast_client_message:
1531 * @screen: the #GdkScreen where the event will be broadcasted.
1532 * @event: the #GdkEvent.
1534 * On X11, sends an X ClientMessage event to all toplevel windows on
1537 * Toplevel windows are determined by checking for the WM_STATE property,
1538 * as described in the Inter-Client Communication Conventions Manual (ICCCM).
1539 * If no windows are found with the WM_STATE property set, the message is
1540 * sent to all children of the root window.
1542 * On Windows, broadcasts a message registered with the name
1543 * GDK_WIN32_CLIENT_MESSAGE to all top-level windows. The amount of
1544 * data is limited to one long, i.e. four bytes.
1550 gdk_screen_broadcast_client_message (GdkScreen *screen,
1554 GdkWindow *root_window;
1556 g_return_if_fail (event != NULL);
1558 root_window = gdk_screen_get_root_window (screen);
1560 /* Set up our event to send, with the exception of its target window */
1561 sev.xclient.type = ClientMessage;
1562 sev.xclient.display = GDK_WINDOW_XDISPLAY (root_window);
1563 sev.xclient.format = event->client.data_format;
1564 memcpy(&sev.xclient.data, &event->client.data, sizeof (sev.xclient.data));
1565 sev.xclient.message_type =
1566 gdk_x11_atom_to_xatom_for_display (GDK_WINDOW_DISPLAY (root_window),
1567 event->client.message_type);
1569 gdk_event_send_client_message_to_all_recurse (gdk_screen_get_display (screen),
1571 GDK_WINDOW_XID (root_window),
1576 check_transform (const gchar *xsettings_name,
1580 if (!g_value_type_transformable (src_type, dest_type))
1582 g_warning ("Cannot transform xsetting %s of type %s to type %s\n",
1584 g_type_name (src_type),
1585 g_type_name (dest_type));
1593 * gdk_screen_get_setting:
1594 * @screen: the #GdkScreen where the setting is located
1595 * @name: the name of the setting
1596 * @value: location to store the value of the setting
1598 * Retrieves a desktop-wide setting such as double-click time
1599 * for the #GdkScreen @screen.
1601 * FIXME needs a list of valid settings here, or a link to
1604 * Returns: %TRUE if the setting existed and a value was stored
1605 * in @value, %FALSE otherwise.
1610 gdk_screen_get_setting (GdkScreen *screen,
1615 const char *xsettings_name = NULL;
1616 XSettingsResult result;
1617 XSettingsSetting *setting = NULL;
1618 GdkScreenX11 *screen_x11;
1619 gboolean success = FALSE;
1621 GValue tmp_val = { 0, };
1623 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1625 screen_x11 = GDK_SCREEN_X11 (screen);
1627 for (i = 0; i < GDK_SETTINGS_N_ELEMENTS(); i++)
1628 if (strcmp (GDK_SETTINGS_GDK_NAME (i), name) == 0)
1630 xsettings_name = GDK_SETTINGS_X_NAME (i);
1634 if (!xsettings_name)
1637 result = xsettings_client_get_setting (screen_x11->xsettings_client,
1638 xsettings_name, &setting);
1639 if (result != XSETTINGS_SUCCESS)
1642 switch (setting->type)
1644 case XSETTINGS_TYPE_INT:
1645 if (check_transform (xsettings_name, G_TYPE_INT, G_VALUE_TYPE (value)))
1647 g_value_init (&tmp_val, G_TYPE_INT);
1648 g_value_set_int (&tmp_val, setting->data.v_int);
1649 g_value_transform (&tmp_val, value);
1654 case XSETTINGS_TYPE_STRING:
1655 if (check_transform (xsettings_name, G_TYPE_STRING, G_VALUE_TYPE (value)))
1657 g_value_init (&tmp_val, G_TYPE_STRING);
1658 g_value_set_string (&tmp_val, setting->data.v_string);
1659 g_value_transform (&tmp_val, value);
1664 case XSETTINGS_TYPE_COLOR:
1665 if (!check_transform (xsettings_name, GDK_TYPE_COLOR, G_VALUE_TYPE (value)))
1669 g_value_init (&tmp_val, GDK_TYPE_COLOR);
1672 color.red = setting->data.v_color.red;
1673 color.green = setting->data.v_color.green;
1674 color.blue = setting->data.v_color.blue;
1676 g_value_set_boxed (&tmp_val, &color);
1678 g_value_transform (&tmp_val, value);
1685 g_value_unset (&tmp_val);
1689 xsettings_setting_free (setting);
1694 return _gdk_x11_get_xft_setting (screen, name, value);
1698 cleanup_atoms(gpointer data)
1700 NetWmSupportedAtoms *supported_atoms = data;
1701 if (supported_atoms->atoms)
1702 XFree (supported_atoms->atoms);
1703 g_free (supported_atoms);
1707 fetch_net_wm_check_window (GdkScreen *screen)
1709 GdkScreenX11 *screen_x11;
1710 GdkDisplay *display;
1720 screen_x11 = GDK_SCREEN_X11 (screen);
1721 display = screen_x11->display;
1723 g_return_if_fail (GDK_DISPLAY_X11 (display)->trusted_client);
1725 g_get_current_time (&tv);
1727 if (ABS (tv.tv_sec - screen_x11->last_wmspec_check_time) < 15)
1728 return; /* we've checked recently */
1730 screen_x11->last_wmspec_check_time = tv.tv_sec;
1733 XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1734 gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTING_WM_CHECK"),
1735 0, G_MAXLONG, False, XA_WINDOW, &type, &format,
1736 &n_items, &bytes_after, &data);
1738 if (type != XA_WINDOW)
1745 xwindow = (Window *)data;
1747 if (screen_x11->wmspec_check_window == *xwindow)
1753 gdk_error_trap_push ();
1755 /* Find out if this WM goes away, so we can reset everything. */
1756 XSelectInput (screen_x11->xdisplay, *xwindow, StructureNotifyMask);
1758 error = gdk_error_trap_pop ();
1761 screen_x11->wmspec_check_window = *xwindow;
1762 screen_x11->need_refetch_net_supported = TRUE;
1763 screen_x11->need_refetch_wm_name = TRUE;
1765 /* Careful, reentrancy */
1766 _gdk_x11_screen_window_manager_changed (GDK_SCREEN (screen_x11));
1768 else if (error == BadWindow)
1770 /* Leftover property, try again immediately, new wm may be starting up */
1771 screen_x11->last_wmspec_check_time = 0;
1778 * gdk_x11_screen_supports_net_wm_hint:
1779 * @screen: the relevant #GdkScreen.
1780 * @property: a property atom.
1782 * This function is specific to the X11 backend of GDK, and indicates
1783 * whether the window manager supports a certain hint from the
1784 * Extended Window Manager Hints Specification. You can find this
1786 * <ulink url="http://www.freedesktop.org">http://www.freedesktop.org</ulink>.
1788 * When using this function, keep in mind that the window manager
1789 * can change over time; so you shouldn't use this function in
1790 * a way that impacts persistent application state. A common bug
1791 * is that your application can start up before the window manager
1792 * does when the user logs in, and before the window manager starts
1793 * gdk_x11_screen_supports_net_wm_hint() will return %FALSE for every property.
1794 * You can monitor the window_manager_changed signal on #GdkScreen to detect
1795 * a window manager change.
1797 * Return value: %TRUE if the window manager supports @property
1802 gdk_x11_screen_supports_net_wm_hint (GdkScreen *screen,
1806 GdkScreenX11 *screen_x11;
1807 NetWmSupportedAtoms *supported_atoms;
1808 GdkDisplay *display;
1810 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1812 screen_x11 = GDK_SCREEN_X11 (screen);
1813 display = screen_x11->display;
1815 if (!G_LIKELY (GDK_DISPLAY_X11 (display)->trusted_client))
1818 supported_atoms = g_object_get_data (G_OBJECT (screen), "gdk-net-wm-supported-atoms");
1819 if (!supported_atoms)
1821 supported_atoms = g_new0 (NetWmSupportedAtoms, 1);
1822 g_object_set_data_full (G_OBJECT (screen), "gdk-net-wm-supported-atoms", supported_atoms, cleanup_atoms);
1825 fetch_net_wm_check_window (screen);
1827 if (screen_x11->wmspec_check_window == None)
1830 if (screen_x11->need_refetch_net_supported)
1832 /* WM has changed since we last got the supported list,
1839 screen_x11->need_refetch_net_supported = FALSE;
1841 if (supported_atoms->atoms)
1842 XFree (supported_atoms->atoms);
1844 supported_atoms->atoms = NULL;
1845 supported_atoms->n_atoms = 0;
1847 XGetWindowProperty (GDK_DISPLAY_XDISPLAY (display), screen_x11->xroot_window,
1848 gdk_x11_get_xatom_by_name_for_display (display, "_NET_SUPPORTED"),
1849 0, G_MAXLONG, False, XA_ATOM, &type, &format,
1850 &supported_atoms->n_atoms, &bytes_after,
1851 (guchar **)&supported_atoms->atoms);
1853 if (type != XA_ATOM)
1857 if (supported_atoms->atoms == NULL)
1861 while (i < supported_atoms->n_atoms)
1863 if (supported_atoms->atoms[i] == gdk_x11_atom_to_xatom_for_display (display, property))
1873 * gdk_net_wm_supports:
1874 * @property: a property atom.
1876 * This function is specific to the X11 backend of GDK, and indicates
1877 * whether the window manager for the default screen supports a certain
1878 * hint from the Extended Window Manager Hints Specification. See
1879 * gdk_x11_screen_supports_net_wm_hint() for complete details.
1881 * Return value: %TRUE if the window manager supports @property
1884 gdk_net_wm_supports (GdkAtom property)
1886 return gdk_x11_screen_supports_net_wm_hint (gdk_screen_get_default (), property);
1890 refcounted_grab_server (Display *xdisplay)
1892 GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
1894 gdk_x11_display_grab (display);
1898 refcounted_ungrab_server (Display *xdisplay)
1900 GdkDisplay *display = gdk_x11_lookup_xdisplay (xdisplay);
1902 gdk_x11_display_ungrab (display);
1905 static GdkFilterReturn
1906 gdk_xsettings_client_event_filter (GdkXEvent *xevent,
1910 GdkScreenX11 *screen = data;
1912 if (xsettings_client_process_event (screen->xsettings_client, (XEvent *)xevent))
1913 return GDK_FILTER_REMOVE;
1915 return GDK_FILTER_CONTINUE;
1919 gdk_xsettings_watch_cb (Window window,
1925 GdkScreen *screen = cb_data;
1927 gdkwin = gdk_window_lookup_for_display (gdk_screen_get_display (screen), window);
1932 g_object_ref (gdkwin);
1935 gdkwin = gdk_window_foreign_new_for_display (gdk_screen_get_display (screen), window);
1937 /* gdk_window_foreign_new_for_display() can fail and return NULL if the
1938 * window has already been destroyed.
1944 gdk_window_add_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
1950 /* gdkwin should not be NULL here, since if starting the watch succeeded
1951 * we have a reference on the window. It might mean that the caller didn't
1952 * remove the watch when it got a DestroyNotify event. Or maybe the
1953 * caller ignored the return value when starting the watch failed.
1955 g_warning ("gdk_xsettings_watch_cb(): Couldn't find window to unwatch");
1959 gdk_window_remove_filter (gdkwin, gdk_xsettings_client_event_filter, screen);
1960 g_object_unref (gdkwin);
1967 gdk_xsettings_notify_cb (const char *name,
1968 XSettingsAction action,
1969 XSettingsSetting *setting,
1973 GdkScreen *screen = data;
1974 GdkScreenX11 *screen_x11 = data;
1977 if (screen_x11->xsettings_in_init)
1980 new_event.type = GDK_SETTING;
1981 new_event.setting.window = gdk_screen_get_root_window (screen);
1982 new_event.setting.send_event = FALSE;
1983 new_event.setting.name = NULL;
1985 for (i = 0; i < GDK_SETTINGS_N_ELEMENTS() ; i++)
1986 if (strcmp (GDK_SETTINGS_X_NAME (i), name) == 0)
1988 new_event.setting.name = (char*) GDK_SETTINGS_GDK_NAME (i);
1992 if (!new_event.setting.name)
1997 case XSETTINGS_ACTION_NEW:
1998 new_event.setting.action = GDK_SETTING_ACTION_NEW;
2000 case XSETTINGS_ACTION_CHANGED:
2001 new_event.setting.action = GDK_SETTING_ACTION_CHANGED;
2003 case XSETTINGS_ACTION_DELETED:
2004 new_event.setting.action = GDK_SETTING_ACTION_DELETED;
2008 gdk_event_put (&new_event);
2012 _gdk_screen_x11_events_init (GdkScreen *screen)
2014 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
2016 /* Keep a flag to avoid extra notifies that we don't need
2018 screen_x11->xsettings_in_init = TRUE;
2019 screen_x11->xsettings_client = xsettings_client_new_with_grab_funcs (screen_x11->xdisplay,
2020 screen_x11->screen_num,
2021 gdk_xsettings_notify_cb,
2022 gdk_xsettings_watch_cb,
2024 refcounted_grab_server,
2025 refcounted_ungrab_server);
2026 screen_x11->xsettings_in_init = FALSE;
2030 * gdk_x11_screen_get_window_manager_name:
2031 * @screen: a #GdkScreen
2033 * Returns the name of the window manager for @screen.
2035 * Return value: the name of the window manager screen @screen, or
2036 * "unknown" if the window manager is unknown. The string is owned by GDK
2037 * and should not be freed.
2042 gdk_x11_screen_get_window_manager_name (GdkScreen *screen)
2044 GdkScreenX11 *screen_x11;
2046 screen_x11 = GDK_SCREEN_X11 (screen);
2048 if (!G_LIKELY (GDK_DISPLAY_X11 (screen_x11->display)->trusted_client))
2049 return screen_x11->window_manager_name;
2051 fetch_net_wm_check_window (screen);
2053 if (screen_x11->need_refetch_wm_name)
2055 /* Get the name of the window manager */
2056 screen_x11->need_refetch_wm_name = FALSE;
2058 g_free (screen_x11->window_manager_name);
2059 screen_x11->window_manager_name = g_strdup ("unknown");
2061 if (screen_x11->wmspec_check_window != None)
2071 gdk_error_trap_push ();
2073 XGetWindowProperty (GDK_DISPLAY_XDISPLAY (screen_x11->display),
2074 screen_x11->wmspec_check_window,
2075 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2077 0, G_MAXLONG, False,
2078 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
2081 &n_items, &bytes_after,
2084 gdk_error_trap_pop_ignored ();
2088 g_free (screen_x11->window_manager_name);
2089 screen_x11->window_manager_name = g_strdup (name);
2095 return GDK_SCREEN_X11 (screen)->window_manager_name;