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"
37 #include <X11/Xatom.h>
39 #ifdef HAVE_SOLARIS_XINERAMA
40 #include <X11/extensions/xinerama.h>
42 #ifdef HAVE_XFREE_XINERAMA
43 #include <X11/extensions/Xinerama.h>
47 #include <X11/extensions/Xrandr.h>
51 #include <X11/extensions/Xfixes.h>
54 static void gdk_screen_x11_dispose (GObject *object);
55 static void gdk_screen_x11_finalize (GObject *object);
56 static void init_randr_support (GdkScreen *screen);
57 static void deinit_multihead (GdkScreen *screen);
61 WINDOW_MANAGER_CHANGED,
65 static guint signals[LAST_SIGNAL] = { 0 };
67 G_DEFINE_TYPE (GdkScreenX11, _gdk_screen_x11, GDK_TYPE_SCREEN)
71 GdkRectangle geometry;
80 _gdk_screen_x11_class_init (GdkScreenX11Class *klass)
82 GObjectClass *object_class = G_OBJECT_CLASS (klass);
84 object_class->dispose = gdk_screen_x11_dispose;
85 object_class->finalize = gdk_screen_x11_finalize;
87 signals[WINDOW_MANAGER_CHANGED] =
88 g_signal_new (g_intern_static_string ("window_manager_changed"),
89 G_OBJECT_CLASS_TYPE (object_class),
91 G_STRUCT_OFFSET (GdkScreenX11Class, window_manager_changed),
93 g_cclosure_marshal_VOID__VOID,
99 _gdk_screen_x11_init (GdkScreenX11 *screen)
104 * gdk_screen_get_display:
105 * @screen: a #GdkScreen
107 * Gets the display to which the @screen belongs.
109 * Returns: the display to which @screen belongs
114 gdk_screen_get_display (GdkScreen *screen)
116 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
118 return GDK_SCREEN_X11 (screen)->display;
121 * gdk_screen_get_width:
122 * @screen: a #GdkScreen
124 * Gets the width of @screen in pixels
126 * Returns: the width of @screen in pixels.
131 gdk_screen_get_width (GdkScreen *screen)
133 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
135 return WidthOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
139 * gdk_screen_get_height:
140 * @screen: a #GdkScreen
142 * Gets the height of @screen in pixels
144 * Returns: the height of @screen in pixels.
149 gdk_screen_get_height (GdkScreen *screen)
151 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
153 return HeightOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
157 * gdk_screen_get_width_mm:
158 * @screen: a #GdkScreen
160 * Gets the width of @screen in millimeters.
161 * Note that on some X servers this value will not be correct.
163 * Returns: the width of @screen in millimeters.
168 gdk_screen_get_width_mm (GdkScreen *screen)
170 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
172 return WidthMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
176 * gdk_screen_get_height_mm:
177 * @screen: a #GdkScreen
179 * Returns the height of @screen in millimeters.
180 * Note that on some X servers this value will not be correct.
182 * Returns: the heigth of @screen in millimeters.
187 gdk_screen_get_height_mm (GdkScreen *screen)
189 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
191 return HeightMMOfScreen (GDK_SCREEN_X11 (screen)->xscreen);
195 * gdk_screen_get_number:
196 * @screen: a #GdkScreen
198 * Gets the index of @screen among the screens in the display
199 * to which it belongs. (See gdk_screen_get_display())
206 gdk_screen_get_number (GdkScreen *screen)
208 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
210 return GDK_SCREEN_X11 (screen)->screen_num;
214 * gdk_screen_get_root_window:
215 * @screen: a #GdkScreen
217 * Gets the root window of @screen.
219 * Returns: (transfer none): the root window
224 gdk_screen_get_root_window (GdkScreen *screen)
226 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
228 return GDK_SCREEN_X11 (screen)->root_window;
232 * gdk_screen_get_default_colormap:
233 * @screen: a #GdkScreen
235 * Gets the default colormap for @screen.
237 * Returns: (transfer none): the default #GdkColormap.
242 gdk_screen_get_default_colormap (GdkScreen *screen)
244 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
246 return GDK_SCREEN_X11 (screen)->default_colormap;
250 * gdk_screen_set_default_colormap:
251 * @screen: a #GdkScreen
252 * @colormap: a #GdkColormap
254 * Sets the default @colormap for @screen.
259 gdk_screen_set_default_colormap (GdkScreen *screen,
260 GdkColormap *colormap)
262 GdkColormap *old_colormap;
264 g_return_if_fail (GDK_IS_SCREEN (screen));
265 g_return_if_fail (GDK_IS_COLORMAP (colormap));
267 old_colormap = GDK_SCREEN_X11 (screen)->default_colormap;
269 GDK_SCREEN_X11 (screen)->default_colormap = g_object_ref (colormap);
272 g_object_unref (old_colormap);
276 gdk_screen_x11_dispose (GObject *object)
278 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);
280 _gdk_x11_events_uninit_screen (GDK_SCREEN (object));
282 if (screen_x11->default_colormap)
284 g_object_unref (screen_x11->default_colormap);
285 screen_x11->default_colormap = NULL;
288 if (screen_x11->system_colormap)
290 g_object_unref (screen_x11->system_colormap);
291 screen_x11->system_colormap = NULL;
294 if (screen_x11->rgba_colormap)
296 g_object_unref (screen_x11->rgba_colormap);
297 screen_x11->rgba_colormap = NULL;
300 if (screen_x11->root_window)
301 _gdk_window_destroy (screen_x11->root_window, TRUE);
303 G_OBJECT_CLASS (_gdk_screen_x11_parent_class)->dispose (object);
305 screen_x11->xdisplay = NULL;
306 screen_x11->xscreen = NULL;
307 screen_x11->screen_num = -1;
308 screen_x11->xroot_window = None;
309 screen_x11->wmspec_check_window = None;
313 gdk_screen_x11_finalize (GObject *object)
315 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (object);
318 if (screen_x11->root_window)
319 g_object_unref (screen_x11->root_window);
321 if (screen_x11->renderer)
322 g_object_unref (screen_x11->renderer);
325 for (i = 0; i < screen_x11->nvisuals; i++)
326 g_object_unref (screen_x11->visuals[i]);
327 g_free (screen_x11->visuals);
328 g_hash_table_destroy (screen_x11->visual_hash);
330 g_free (screen_x11->window_manager_name);
332 g_hash_table_destroy (screen_x11->colormap_hash);
334 deinit_multihead (GDK_SCREEN (object));
336 G_OBJECT_CLASS (_gdk_screen_x11_parent_class)->finalize (object);
340 * gdk_screen_get_n_monitors:
341 * @screen: a #GdkScreen
343 * Returns the number of monitors which @screen consists of.
345 * Returns: number of monitors which @screen consists of
350 gdk_screen_get_n_monitors (GdkScreen *screen)
352 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
354 return GDK_SCREEN_X11 (screen)->n_monitors;
358 * gdk_screen_get_primary_monitor:
359 * @screen: a #GdkScreen.
361 * Gets the primary monitor for @screen. The primary monitor
362 * is considered the monitor where the 'main desktop' lives.
363 * While normal application windows typically allow the window
364 * manager to place the windows, specialized desktop applications
365 * such as panels should place themselves on the primary monitor.
367 * If no primary monitor is configured by the user, the return value
368 * will be 0, defaulting to the first monitor.
370 * Returns: An integer index for the primary monitor, or 0 if none is configured.
375 gdk_screen_get_primary_monitor (GdkScreen *screen)
377 g_return_val_if_fail (GDK_IS_SCREEN (screen), 0);
379 return GDK_SCREEN_X11 (screen)->primary_monitor;
383 * gdk_screen_get_monitor_width_mm:
384 * @screen: a #GdkScreen
385 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
387 * Gets the width in millimeters of the specified monitor, if available.
389 * Returns: the width of the monitor, or -1 if not available
394 gdk_screen_get_monitor_width_mm (GdkScreen *screen,
397 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
399 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
400 g_return_val_if_fail (monitor_num >= 0, -1);
401 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
403 return screen_x11->monitors[monitor_num].width_mm;
407 * gdk_screen_get_monitor_height_mm:
408 * @screen: a #GdkScreen
409 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
411 * Gets the height in millimeters of the specified monitor.
413 * Returns: the height of the monitor, or -1 if not available
418 gdk_screen_get_monitor_height_mm (GdkScreen *screen,
421 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
423 g_return_val_if_fail (GDK_IS_SCREEN (screen), -1);
424 g_return_val_if_fail (monitor_num >= 0, -1);
425 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, -1);
427 return screen_x11->monitors[monitor_num].height_mm;
431 * gdk_screen_get_monitor_plug_name:
432 * @screen: a #GdkScreen
433 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
435 * Returns the output name of the specified monitor.
436 * Usually something like VGA, DVI, or TV, not the actual
437 * product name of the display device.
439 * Returns: a newly-allocated string containing the name of the monitor,
440 * or %NULL if the name cannot be determined
445 gdk_screen_get_monitor_plug_name (GdkScreen *screen,
448 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
450 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
451 g_return_val_if_fail (monitor_num >= 0, NULL);
452 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, NULL);
454 return g_strdup (screen_x11->monitors[monitor_num].output_name);
458 * gdk_x11_screen_get_monitor_output:
459 * @screen: a #GdkScreen
460 * @monitor_num: number of the monitor, between 0 and gdk_screen_get_n_monitors (screen)
462 * Gets the XID of the specified output/monitor.
463 * If the X server does not support version 1.2 of the RANDR
464 * extension, 0 is returned.
466 * Returns: the XID of the monitor
471 gdk_x11_screen_get_monitor_output (GdkScreen *screen,
474 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
476 g_return_val_if_fail (GDK_IS_SCREEN (screen), None);
477 g_return_val_if_fail (monitor_num >= 0, None);
478 g_return_val_if_fail (monitor_num < screen_x11->n_monitors, None);
480 return screen_x11->monitors[monitor_num].output;
484 * gdk_screen_get_monitor_geometry:
485 * @screen : a #GdkScreen
486 * @monitor_num: the monitor number, between 0 and gdk_screen_get_n_monitors (screen)
487 * @dest : a #GdkRectangle to be filled with the monitor geometry
489 * Retrieves the #GdkRectangle representing the size and position of
490 * the individual monitor within the entire screen area.
492 * Note that the size of the entire screen area can be retrieved via
493 * gdk_screen_get_width() and gdk_screen_get_height().
498 gdk_screen_get_monitor_geometry (GdkScreen *screen,
502 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
504 g_return_if_fail (GDK_IS_SCREEN (screen));
505 g_return_if_fail (monitor_num >= 0);
506 g_return_if_fail (monitor_num < screen_x11->n_monitors);
509 *dest = screen_x11->monitors[monitor_num].geometry;
513 * gdk_screen_get_rgba_colormap:
514 * @screen: a #GdkScreen.
516 * Gets a colormap to use for creating windows or pixmaps with an
517 * alpha channel. The windowing system on which GTK+ is running
518 * may not support this capability, in which case %NULL will
519 * be returned. Even if a non-%NULL value is returned, its
520 * possible that the window's alpha channel won't be honored
521 * when displaying the window on the screen: in particular, for
522 * X an appropriate windowing manager and compositing manager
523 * must be running to provide appropriate display.
525 * This functionality is not implemented in the Windows backend.
527 * For setting an overall opacity for a top-level window, see
528 * gdk_window_set_opacity().
530 * Return value: (transfer none): a colormap to use for windows with
531 * an alpha channel or %NULL if the capability is not available.
536 gdk_screen_get_rgba_colormap (GdkScreen *screen)
538 GdkScreenX11 *screen_x11;
540 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
542 screen_x11 = GDK_SCREEN_X11 (screen);
544 if (!screen_x11->rgba_visual)
547 if (!screen_x11->rgba_colormap)
548 screen_x11->rgba_colormap = gdk_colormap_new (screen_x11->rgba_visual,
551 return screen_x11->rgba_colormap;
555 * gdk_screen_get_rgba_visual:
556 * @screen: a #GdkScreen
558 * Gets a visual to use for creating windows or pixmaps with an
559 * alpha channel. See the docs for gdk_screen_get_rgba_colormap()
562 * Return value: (transfer none): a visual to use for windows with an
563 * alpha channel or %NULL if the capability is not available.
568 gdk_screen_get_rgba_visual (GdkScreen *screen)
570 GdkScreenX11 *screen_x11;
572 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
574 screen_x11 = GDK_SCREEN_X11 (screen);
576 return screen_x11->rgba_visual;
580 * gdk_x11_screen_get_xscreen:
581 * @screen: a #GdkScreen.
582 * @returns: (transfer none): an Xlib <type>Screen*</type>
584 * Returns the screen of a #GdkScreen.
589 gdk_x11_screen_get_xscreen (GdkScreen *screen)
591 return GDK_SCREEN_X11 (screen)->xscreen;
595 * gdk_x11_screen_get_screen_number:
596 * @screen: a #GdkScreen.
597 * @returns: the position of @screen among the screens of
600 * Returns the index of a #GdkScreen.
605 gdk_x11_screen_get_screen_number (GdkScreen *screen)
607 return GDK_SCREEN_X11 (screen)->screen_num;
611 check_is_composited (GdkDisplay *display,
612 GdkScreenX11 *screen_x11)
614 Atom xselection = gdk_x11_atom_to_xatom_for_display (display, screen_x11->cm_selection_atom);
617 xwindow = XGetSelectionOwner (GDK_DISPLAY_XDISPLAY (display), xselection);
619 return xwindow != None;
623 make_cm_atom (int screen_number)
625 gchar *name = g_strdup_printf ("_NET_WM_CM_S%d", screen_number);
626 GdkAtom atom = gdk_atom_intern (name, FALSE);
632 init_monitor_geometry (GdkX11Monitor *monitor,
633 int x, int y, int width, int height)
635 monitor->geometry.x = x;
636 monitor->geometry.y = y;
637 monitor->geometry.width = width;
638 monitor->geometry.height = height;
640 monitor->output = None;
641 monitor->width_mm = -1;
642 monitor->height_mm = -1;
643 monitor->output_name = NULL;
644 monitor->manufacturer = NULL;
648 init_fake_xinerama (GdkScreen *screen)
650 #ifdef G_ENABLE_DEBUG
651 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
652 XSetWindowAttributes atts;
656 if (!(_gdk_debug_flags & GDK_DEBUG_XINERAMA))
659 /* Fake Xinerama mode by splitting the screen into 4 monitors.
660 * Also draw a little cross to make the monitor boundaries visible.
662 w = WidthOfScreen (screen_x11->xscreen);
663 h = HeightOfScreen (screen_x11->xscreen);
665 screen_x11->n_monitors = 4;
666 screen_x11->monitors = g_new0 (GdkX11Monitor, 4);
667 init_monitor_geometry (&screen_x11->monitors[0], 0, 0, w / 2, h / 2);
668 init_monitor_geometry (&screen_x11->monitors[1], w / 2, 0, w / 2, h / 2);
669 init_monitor_geometry (&screen_x11->monitors[2], 0, h / 2, w / 2, h / 2);
670 init_monitor_geometry (&screen_x11->monitors[3], w / 2, h / 2, w / 2, h / 2);
672 atts.override_redirect = 1;
673 atts.background_pixel = WhitePixel(GDK_SCREEN_XDISPLAY (screen),
674 screen_x11->screen_num);
675 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
676 screen_x11->xroot_window, 0, h / 2, w, 1, 0,
677 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
678 screen_x11->screen_num),
680 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
681 screen_x11->screen_num),
682 CWOverrideRedirect|CWBackPixel,
684 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
685 win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
686 screen_x11->xroot_window, w/2 , 0, 1, h, 0,
687 DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
688 screen_x11->screen_num),
690 DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
691 screen_x11->screen_num),
692 CWOverrideRedirect|CWBackPixel,
694 XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
702 free_monitors (GdkX11Monitor *monitors,
707 for (i = 0; i < n_monitors; ++i)
709 g_free (monitors[i].output_name);
710 g_free (monitors[i].manufacturer);
717 monitor_compare_function (GdkX11Monitor *monitor1,
718 GdkX11Monitor *monitor2)
720 /* Sort the leftmost/topmost monitors first.
721 * For "cloned" monitors, sort the bigger ones first
722 * (giving preference to taller monitors over wider
726 if (monitor1->geometry.x != monitor2->geometry.x)
727 return monitor1->geometry.x - monitor2->geometry.x;
729 if (monitor1->geometry.y != monitor2->geometry.y)
730 return monitor1->geometry.y - monitor2->geometry.y;
732 if (monitor1->geometry.height != monitor2->geometry.height)
733 return - (monitor1->geometry.height - monitor2->geometry.height);
735 if (monitor1->geometry.width != monitor2->geometry.width)
736 return - (monitor1->geometry.width - monitor2->geometry.width);
742 init_randr13 (GdkScreen *screen)
745 GdkDisplay *display = gdk_screen_get_display (screen);
746 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
747 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
748 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
749 XRRScreenResources *resources;
750 RROutput primary_output;
753 gboolean randr12_compat = FALSE;
755 if (!display_x11->have_randr13)
758 resources = XRRGetScreenResourcesCurrent (screen_x11->xdisplay,
759 screen_x11->xroot_window);
763 monitors = g_array_sized_new (FALSE, TRUE, sizeof (GdkX11Monitor),
766 primary_output = XRRGetOutputPrimary (screen_x11->xdisplay,
767 screen_x11->xroot_window);
769 for (i = 0; i < resources->noutput; ++i)
771 XRROutputInfo *output =
772 XRRGetOutputInfo (dpy, resources, resources->outputs[i]);
774 if (resources->outputs[i] == primary_output)
776 screen_x11->primary_monitor = i;
779 /* Non RandR1.2 X driver have output name "default" */
780 randr12_compat |= !g_strcmp0(output->name, "default");
782 if (output->connection == RR_Disconnected)
784 XRRFreeOutputInfo (output);
788 /* No RandR1.3+ available or no primary set, fall back to prefer LVDS as primary if present */
789 if (primary_output == None && g_ascii_strncasecmp (output->name, "LVDS", 4) == 0)
791 screen_x11->primary_monitor = i;
796 GdkX11Monitor monitor;
797 XRRCrtcInfo *crtc = XRRGetCrtcInfo (dpy, resources, output->crtc);
799 monitor.geometry.x = crtc->x;
800 monitor.geometry.y = crtc->y;
801 monitor.geometry.width = crtc->width;
802 monitor.geometry.height = crtc->height;
804 monitor.output = resources->outputs[i];
805 monitor.width_mm = output->mm_width;
806 monitor.height_mm = output->mm_height;
807 monitor.output_name = g_strdup (output->name);
808 /* FIXME: need EDID parser */
809 monitor.manufacturer = NULL;
811 g_array_append_val (monitors, monitor);
813 XRRFreeCrtcInfo (crtc);
816 XRRFreeOutputInfo (output);
819 XRRFreeScreenResources (resources);
821 /* non RandR 1.2 X driver doesn't return any usable multihead data */
824 guint n_monitors = monitors->len;
826 free_monitors ((GdkX11Monitor *)g_array_free (monitors, FALSE),
832 g_array_sort (monitors,
833 (GCompareFunc) monitor_compare_function);
834 screen_x11->n_monitors = monitors->len;
835 screen_x11->monitors = (GdkX11Monitor *)g_array_free (monitors, FALSE);
837 return screen_x11->n_monitors > 0;
844 init_solaris_xinerama (GdkScreen *screen)
846 #ifdef HAVE_SOLARIS_XINERAMA
847 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
848 int screen_no = gdk_screen_get_number (screen);
849 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
850 XRectangle monitors[MAXFRAMEBUFFERS];
851 unsigned char hints[16];
856 if (!XineramaGetState (dpy, screen_no))
859 result = XineramaGetInfo (dpy, screen_no, monitors, hints, &n_monitors);
861 /* Yes I know it should be Success but the current implementation
862 * returns the num of monitor
869 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
870 screen_x11->n_monitors = n_monitors;
872 for (i = 0; i < n_monitors; i++)
874 init_monitor_geometry (&screen_x11->monitors[i],
875 monitors[i].x, monitors[i].y,
876 monitors[i].width, monitors[i].height);
880 #endif /* HAVE_SOLARIS_XINERAMA */
886 init_xfree_xinerama (GdkScreen *screen)
888 #ifdef HAVE_XFREE_XINERAMA
889 Display *dpy = GDK_SCREEN_XDISPLAY (screen);
890 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
891 XineramaScreenInfo *monitors;
894 if (!XineramaIsActive (dpy))
897 monitors = XineramaQueryScreens (dpy, &n_monitors);
899 if (n_monitors <= 0 || monitors == NULL)
901 /* If Xinerama doesn't think we have any monitors, try acting as
902 * though we had no Xinerama. If the "no monitors" condition
903 * is because XRandR 1.2 is currently switching between CRTCs,
904 * we'll be notified again when we have our monitor back,
905 * and can go back into Xinerama-ish mode at that point.
913 screen_x11->n_monitors = n_monitors;
914 screen_x11->monitors = g_new0 (GdkX11Monitor, n_monitors);
916 for (i = 0; i < n_monitors; ++i)
918 init_monitor_geometry (&screen_x11->monitors[i],
919 monitors[i].x_org, monitors[i].y_org,
920 monitors[i].width, monitors[i].height);
926 #endif /* HAVE_XFREE_XINERAMA */
932 deinit_multihead (GdkScreen *screen)
934 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
936 free_monitors (screen_x11->monitors, screen_x11->n_monitors);
938 screen_x11->n_monitors = 0;
939 screen_x11->monitors = NULL;
943 compare_monitor (GdkX11Monitor *m1,
946 if (m1->geometry.x != m2->geometry.x ||
947 m1->geometry.y != m2->geometry.y ||
948 m1->geometry.width != m2->geometry.width ||
949 m1->geometry.height != m2->geometry.height)
952 if (m1->width_mm != m2->width_mm ||
953 m1->height_mm != m2->height_mm)
956 if (g_strcmp0 (m1->output_name, m2->output_name) != 0)
959 if (g_strcmp0 (m1->manufacturer, m2->manufacturer) != 0)
966 compare_monitors (GdkX11Monitor *monitors1, gint n_monitors1,
967 GdkX11Monitor *monitors2, gint n_monitors2)
971 if (n_monitors1 != n_monitors2)
974 for (i = 0; i < n_monitors1; i++)
976 if (!compare_monitor (monitors1 + i, monitors2 + i))
984 init_multihead (GdkScreen *screen)
986 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
987 int opcode, firstevent, firsterror;
989 /* There are four different implementations of multihead support:
991 * 1. Fake Xinerama for debugging purposes
993 * 3. Solaris Xinerama
994 * 4. XFree86/Xorg Xinerama
996 * We use them in that order.
998 if (init_fake_xinerama (screen))
1001 if (init_randr13 (screen))
1004 if (XQueryExtension (GDK_SCREEN_XDISPLAY (screen), "XINERAMA",
1005 &opcode, &firstevent, &firsterror))
1007 if (init_solaris_xinerama (screen))
1010 if (init_xfree_xinerama (screen))
1014 /* No multihead support of any kind for this screen */
1015 screen_x11->n_monitors = 1;
1016 screen_x11->monitors = g_new0 (GdkX11Monitor, 1);
1018 init_monitor_geometry (screen_x11->monitors, 0, 0,
1019 WidthOfScreen (screen_x11->xscreen),
1020 HeightOfScreen (screen_x11->xscreen));
1024 _gdk_x11_screen_new (GdkDisplay *display,
1028 GdkScreenX11 *screen_x11;
1029 GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
1031 screen = g_object_new (GDK_TYPE_SCREEN_X11, NULL);
1033 screen_x11 = GDK_SCREEN_X11 (screen);
1034 screen_x11->display = display;
1035 screen_x11->xdisplay = display_x11->xdisplay;
1036 screen_x11->xscreen = ScreenOfDisplay (display_x11->xdisplay, screen_number);
1037 screen_x11->screen_num = screen_number;
1038 screen_x11->xroot_window = RootWindow (display_x11->xdisplay,screen_number);
1039 screen_x11->wmspec_check_window = None;
1040 /* we want this to be always non-null */
1041 screen_x11->window_manager_name = g_strdup ("unknown");
1043 init_multihead (screen);
1044 init_randr_support (screen);
1046 _gdk_visual_init (screen);
1047 _gdk_windowing_window_init (screen);
1053 * It is important that we first request the selection
1054 * notification, and then setup the initial state of
1055 * is_composited to avoid a race condition here.
1058 _gdk_x11_screen_setup (GdkScreen *screen)
1060 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1062 screen_x11->cm_selection_atom = make_cm_atom (screen_x11->screen_num);
1063 gdk_display_request_selection_notification (screen_x11->display,
1064 screen_x11->cm_selection_atom);
1065 screen_x11->is_composited = check_is_composited (screen_x11->display, screen_x11);
1069 * gdk_screen_is_composited:
1070 * @screen: a #GdkScreen
1072 * Returns whether windows with an RGBA visual can reasonably
1073 * be expected to have their alpha channel drawn correctly on
1076 * On X11 this function returns whether a compositing manager is
1077 * compositing @screen.
1079 * Return value: Whether windows with RGBA visuals can reasonably be
1080 * expected to have their alpha channels drawn correctly on the screen.
1085 gdk_screen_is_composited (GdkScreen *screen)
1087 GdkScreenX11 *screen_x11;
1089 g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE);
1091 screen_x11 = GDK_SCREEN_X11 (screen);
1093 return screen_x11->is_composited;
1097 init_randr_support (GdkScreen * screen)
1099 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1101 XSelectInput (GDK_SCREEN_XDISPLAY (screen),
1102 screen_x11->xroot_window,
1103 StructureNotifyMask);
1106 XRRSelectInput (GDK_SCREEN_XDISPLAY (screen),
1107 screen_x11->xroot_window,
1108 RRScreenChangeNotifyMask |
1109 RRCrtcChangeNotifyMask |
1110 RROutputPropertyNotifyMask);
1115 process_monitors_change (GdkScreen *screen)
1117 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1119 GdkX11Monitor *monitors;
1122 n_monitors = screen_x11->n_monitors;
1123 monitors = screen_x11->monitors;
1125 screen_x11->n_monitors = 0;
1126 screen_x11->monitors = NULL;
1128 init_multihead (screen);
1130 changed = !compare_monitors (monitors, n_monitors,
1131 screen_x11->monitors, screen_x11->n_monitors);
1133 free_monitors (monitors, n_monitors);
1136 g_signal_emit_by_name (screen, "monitors-changed");
1140 _gdk_x11_screen_size_changed (GdkScreen *screen,
1144 GdkDisplayX11 *display_x11;
1146 width = gdk_screen_get_width (screen);
1147 height = gdk_screen_get_height (screen);
1150 display_x11 = GDK_DISPLAY_X11 (gdk_screen_get_display (screen));
1152 if (display_x11->have_randr13 && event->type == ConfigureNotify)
1154 g_signal_emit_by_name (screen, "monitors-changed");
1158 XRRUpdateConfiguration (event);
1160 if (event->type == ConfigureNotify)
1162 XConfigureEvent *rcevent = (XConfigureEvent *) event;
1163 Screen *xscreen = gdk_x11_screen_get_xscreen (screen);
1165 xscreen->width = rcevent->width;
1166 xscreen->height = rcevent->height;
1172 process_monitors_change (screen);
1174 if (width != gdk_screen_get_width (screen) ||
1175 height != gdk_screen_get_height (screen))
1176 g_signal_emit_by_name (screen, "size-changed");
1180 _gdk_x11_screen_window_manager_changed (GdkScreen *screen)
1182 g_signal_emit (screen, signals[WINDOW_MANAGER_CHANGED], 0);
1186 _gdk_x11_screen_process_owner_change (GdkScreen *screen,
1190 XFixesSelectionNotifyEvent *selection_event = (XFixesSelectionNotifyEvent *)event;
1191 GdkScreenX11 *screen_x11 = GDK_SCREEN_X11 (screen);
1192 Atom xcm_selection_atom = gdk_x11_atom_to_xatom_for_display (screen_x11->display,
1193 screen_x11->cm_selection_atom);
1195 if (selection_event->selection == xcm_selection_atom)
1197 gboolean composited = selection_event->owner != None;
1199 if (composited != screen_x11->is_composited)
1201 screen_x11->is_composited = composited;
1203 g_signal_emit_by_name (screen, "composited-changed");
1210 * _gdk_windowing_substitute_screen_number:
1211 * @display_name : The name of a display, in the form used by
1212 * gdk_display_open (). If %NULL a default value
1213 * will be used. On X11, this is derived from the DISPLAY
1214 * environment variable.
1215 * @screen_number : The number of a screen within the display
1216 * referred to by @display_name.
1218 * Modifies a @display_name to make @screen_number the default
1219 * screen when the display is opened.
1221 * Return value: a newly allocated string holding the resulting
1222 * display name. Free with g_free().
1225 _gdk_windowing_substitute_screen_number (const gchar *display_name,
1232 display_name = getenv ("DISPLAY");
1237 str = g_string_new (display_name);
1239 p = strrchr (str->str, '.');
1240 if (p && p > strchr (str->str, ':'))
1241 g_string_truncate (str, p - str->str);
1243 g_string_append_printf (str, ".%d", screen_number);
1245 return g_string_free (str, FALSE);
1249 * gdk_screen_make_display_name:
1250 * @screen: a #GdkScreen
1252 * Determines the name to pass to gdk_display_open() to get
1253 * a #GdkDisplay with this screen as the default screen.
1255 * Return value: a newly allocated string, free with g_free()
1260 gdk_screen_make_display_name (GdkScreen *screen)
1262 const gchar *old_display;
1264 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1266 old_display = gdk_display_get_name (gdk_screen_get_display (screen));
1268 return _gdk_windowing_substitute_screen_number (old_display,
1269 gdk_screen_get_number (screen));
1273 * gdk_screen_get_active_window
1274 * @screen: a #GdkScreen
1276 * Returns the screen's currently active window.
1278 * On X11, this is done by inspecting the _NET_ACTIVE_WINDOW property
1279 * on the root window, as described in the <ulink
1280 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1281 * Manager Hints</ulink>. If there is no currently currently active
1282 * window, or the window manager does not support the
1283 * _NET_ACTIVE_WINDOW hint, this function returns %NULL.
1285 * On other platforms, this function may return %NULL, depending on whether
1286 * it is implementable on that platform.
1288 * The returned window should be unrefed using g_object_unref() when
1291 * Return value: the currently active window, or %NULL.
1296 gdk_screen_get_active_window (GdkScreen *screen)
1298 GdkScreenX11 *screen_x11;
1299 GdkWindow *ret = NULL;
1302 gulong nitems_return;
1303 gulong bytes_after_return;
1304 guchar *data = NULL;
1306 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1308 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1309 gdk_atom_intern_static_string ("_NET_ACTIVE_WINDOW")))
1312 screen_x11 = GDK_SCREEN_X11 (screen);
1314 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1315 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1316 "_NET_ACTIVE_WINDOW"),
1317 0, 1, False, XA_WINDOW, &type_return,
1318 &format_return, &nitems_return,
1319 &bytes_after_return, &data)
1322 if ((type_return == XA_WINDOW) && (format_return == 32) && (data))
1324 GdkNativeWindow window = *(GdkNativeWindow *) data;
1328 ret = gdk_window_foreign_new_for_display (screen_x11->display,
1329 *(GdkNativeWindow *) data);
1341 * gdk_screen_get_window_stack
1342 * @screen: a #GdkScreen
1344 * Returns a #GList of #GdkWindow<!-- -->s representing the current
1347 * On X11, this is done by inspecting the _NET_CLIENT_LIST_STACKING
1348 * property on the root window, as described in the <ulink
1349 * url="http://www.freedesktop.org/Standards/wm-spec">Extended Window
1350 * Manager Hints</ulink>. If the window manager does not support the
1351 * _NET_CLIENT_LIST_STACKING hint, this function returns %NULL.
1353 * On other platforms, this function may return %NULL, depending on whether
1354 * it is implementable on that platform.
1356 * The returned list is newly allocated and owns references to the
1357 * windows it contains, so it should be freed using g_list_free() and
1358 * its windows unrefed using g_object_unref() when no longer needed.
1360 * Return value: a list of #GdkWindow<!-- -->s for the current window stack,
1366 gdk_screen_get_window_stack (GdkScreen *screen)
1368 GdkScreenX11 *screen_x11;
1372 gulong nitems_return;
1373 gulong bytes_after_return;
1374 guchar *data = NULL;
1376 g_return_val_if_fail (GDK_IS_SCREEN (screen), NULL);
1378 if (!gdk_x11_screen_supports_net_wm_hint (screen,
1379 gdk_atom_intern_static_string ("_NET_CLIENT_LIST_STACKING")))
1382 screen_x11 = GDK_SCREEN_X11 (screen);
1384 if (XGetWindowProperty (screen_x11->xdisplay, screen_x11->xroot_window,
1385 gdk_x11_get_xatom_by_name_for_display (screen_x11->display,
1386 "_NET_CLIENT_LIST_STACKING"),
1387 0, G_MAXLONG, False, XA_WINDOW, &type_return,
1388 &format_return, &nitems_return,
1389 &bytes_after_return, &data)
1392 if ((type_return == XA_WINDOW) && (format_return == 32) &&
1393 (data) && (nitems_return > 0))
1395 gulong *stack = (gulong *) data;
1399 for (i = 0; i < nitems_return; i++)
1401 win = gdk_window_foreign_new_for_display (screen_x11->display,
1402 (GdkNativeWindow)stack[i]);
1405 ret = g_list_append (ret, win);
1416 #define __GDK_SCREEN_X11_C__
1417 #include "gdkaliasdef.c"