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/* functions for grabbing information about Xinerama screens
* Copyright (C) 2003 Cameron Patrick
*
* This file is part of ratpoison.
*
* ratpoison is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* ratpoison is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
#include "ratpoison.h"
#ifdef HAVE_X11_EXTENSIONS_XINERAMA_H
# include <X11/extensions/Xinerama.h>
# define XINERAMA
#endif
int rp_have_xinerama = 0;
int xine_screen_count;
#ifdef XINERAMA
static XineramaScreenInfo *xine_screens = NULL;
#endif
void
init_xinerama(void)
{
#ifdef XINERAMA
int evbase, errbase, major, minor;
rp_have_xinerama = 0;
if (xine_screens) XFree(xine_screens);
if (!XineramaQueryExtension(dpy, &evbase, &errbase)) {
return;
}
if (XineramaQueryVersion(dpy, &major, &minor) == 0) {
return;
}
if (major != 1) {
fprintf (stderr, "Warning: Xinerama version %d.%d not supported\n", major, minor);
return;
}
if (!XineramaIsActive(dpy)) {
return;
}
xine_screens = XineramaQueryScreens(dpy, &xine_screen_count);
if (xine_screens == NULL) {
return;
}
if (xine_screen_count < 2) {
XFree (xine_screens);
xine_screens = NULL;
return;
}
rp_have_xinerama = 1;
#else
rp_have_xinerama = 0;
#endif
}
#ifdef XINERAMA
void xinerama_get_screen_info(int sc, int *x, int *y, int *w, int *h)
{
if ((sc < xine_screen_count) && (sc >= 0)) {
*x = xine_screens[sc].x_org;
*y = xine_screens[sc].y_org;
*w = xine_screens[sc].width;
*h = xine_screens[sc].height;
}
}
#else
void xinerama_get_screen_info(int sc UNUSED, int *x UNUSED, int *y UNUSED, int *w UNUSED, int *h UNUSED)
{
}
#endif
void
free_xinerama(void)
{
#ifdef XINERAMA
if (xine_screens) {
XFree(xine_screens);
}
rp_have_xinerama = 0;
#endif
}
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