static gboolean
init_fake_xinerama (GdkScreen *screen)
{
#ifdef G_ENABLE_DEBUG
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
XSetWindowAttributes atts;
Window win;
gint w, h;
if (!(_gdk_debug_flags & GDK_DEBUG_XINERAMA))
return FALSE;
/* Fake Xinerama mode by splitting the screen into 4 monitors.
* Also draw a little cross to make the monitor boundaries visible.
*/
w = WidthOfScreen (x11_screen->xscreen);
h = HeightOfScreen (x11_screen->xscreen);
x11_screen->n_monitors = 4;
x11_screen->monitors = g_new0 (GdkX11Monitor, 4);
init_monitor_geometry (&x11_screen->monitors[0], 0, 0, w / 2, h / 2);
init_monitor_geometry (&x11_screen->monitors[1], w / 2, 0, w / 2, h / 2);
init_monitor_geometry (&x11_screen->monitors[2], 0, h / 2, w / 2, h / 2);
init_monitor_geometry (&x11_screen->monitors[3], w / 2, h / 2, w / 2, h / 2);
atts.override_redirect = 1;
atts.background_pixel = WhitePixel(GDK_SCREEN_XDISPLAY (screen),
x11_screen->screen_num);
win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
x11_screen->xroot_window, 0, h / 2, w, 1, 0,
DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
x11_screen->screen_num),
InputOutput,
DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
x11_screen->screen_num),
CWOverrideRedirect|CWBackPixel,
&atts);
XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
win = XCreateWindow(GDK_SCREEN_XDISPLAY (screen),
x11_screen->xroot_window, w/2 , 0, 1, h, 0,
DefaultDepth(GDK_SCREEN_XDISPLAY (screen),
x11_screen->screen_num),
InputOutput,
DefaultVisual(GDK_SCREEN_XDISPLAY (screen),
x11_screen->screen_num),
CWOverrideRedirect|CWBackPixel,
&atts);
XMapRaised(GDK_SCREEN_XDISPLAY (screen), win);
return TRUE;
#endif
return FALSE;
}
static void
init_multihead (GdkScreen *screen)
{
GdkScreenGix *screen_gix = GDK_SCREEN_GIX (screen);
/* No multihead support of any kind for this screen */
screen_gix->n_monitors = 1;
screen_gix->monitors = g_new0 (GdkGixMonitor, 1);
screen_gix->primary_monitor = 0;
init_monitor_geometry (screen_gix->monitors, 0, 0,
screen_gix->width, screen_gix->height);
}
static gboolean
init_xfree_xinerama (GdkScreen *screen)
{
#ifdef HAVE_XFREE_XINERAMA
Display *dpy = GDK_SCREEN_XDISPLAY (screen);
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
XineramaScreenInfo *monitors;
int i, n_monitors;
if (!XineramaIsActive (dpy))
return FALSE;
monitors = XineramaQueryScreens (dpy, &n_monitors);
if (n_monitors <= 0 || monitors == NULL)
{
/* If Xinerama doesn't think we have any monitors, try acting as
* though we had no Xinerama. If the "no monitors" condition
* is because XRandR 1.2 is currently switching between CRTCs,
* we'll be notified again when we have our monitor back,
* and can go back into Xinerama-ish mode at that point.
*/
if (monitors)
XFree (monitors);
return FALSE;
}
x11_screen->n_monitors = n_monitors;
x11_screen->monitors = g_new0 (GdkX11Monitor, n_monitors);
for (i = 0; i < n_monitors; ++i)
{
init_monitor_geometry (&x11_screen->monitors[i],
monitors[i].x_org, monitors[i].y_org,
monitors[i].width, monitors[i].height);
}
XFree (monitors);
x11_screen->primary_monitor = 0;
return TRUE;
#endif /* HAVE_XFREE_XINERAMA */
return FALSE;
}
static gboolean
init_solaris_xinerama (GdkScreen *screen)
{
#ifdef HAVE_SOLARIS_XINERAMA
Display *dpy = GDK_SCREEN_XDISPLAY (screen);
int screen_no = gdk_screen_get_number (screen);
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
XRectangle monitors[MAXFRAMEBUFFERS];
unsigned char hints[16];
gint result;
int n_monitors;
int i;
if (!XineramaGetState (dpy, screen_no))
return FALSE;
result = XineramaGetInfo (dpy, screen_no, monitors, hints, &n_monitors);
/* Yes I know it should be Success but the current implementation
* returns the num of monitor
*/
if (result == 0)
{
return FALSE;
}
x11_screen->monitors = g_new0 (GdkX11Monitor, n_monitors);
x11_screen->n_monitors = n_monitors;
for (i = 0; i < n_monitors; i++)
{
init_monitor_geometry (&x11_screen->monitors[i],
monitors[i].x, monitors[i].y,
monitors[i].width, monitors[i].height);
}
x11_screen->primary_monitor = 0;
return TRUE;
#endif /* HAVE_SOLARIS_XINERAMA */
return FALSE;
}
static void
init_multihead (GdkScreen *screen)
{
GdkX11Screen *x11_screen = GDK_X11_SCREEN (screen);
int opcode, firstevent, firsterror;
/* There are four different implementations of multihead support:
*
* 1. Fake Xinerama for debugging purposes
* 2. RandR 1.2
* 3. Solaris Xinerama
* 4. XFree86/Xorg Xinerama
*
* We use them in that order.
*/
if (init_fake_xinerama (screen))
return;
if (init_randr13 (screen))
return;
if (XQueryExtension (GDK_SCREEN_XDISPLAY (screen), "XINERAMA",
&opcode, &firstevent, &firsterror))
{
if (init_solaris_xinerama (screen))
return;
if (init_xfree_xinerama (screen))
return;
}
/* No multihead support of any kind for this screen */
x11_screen->n_monitors = 1;
x11_screen->monitors = g_new0 (GdkX11Monitor, 1);
x11_screen->primary_monitor = 0;
init_monitor_geometry (x11_screen->monitors, 0, 0,
WidthOfScreen (x11_screen->xscreen),
HeightOfScreen (x11_screen->xscreen));
}
