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/*
* $Id$
*
* Copyright © 2004 Keith Packard
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "lpint.h"
static Bool
init_display (light_pipe_display *lpd)
{
if (!XFixesQueryExtension (lpd->display,
&lpd->xfixes.event_base,
&lpd->xfixes.error_base))
return False;
if (!XDamageQueryExtension (lpd->display,
&lpd->damage.event_base,
&lpd->damage.error_base))
return False;
if (!XCompositeQueryExtension (lpd->display,
&lpd->composite.event_base,
&lpd->composite.error_base))
return False;
return True;
}
light_pipe_display *
find_display (Display *display)
{
light_pipe_display *lpd;
if (XFindContext (display, 0, lp_context (), (XPointer *) &lpd) == 0)
return lpd;
lpd = malloc (sizeof (light_pipe_display));
if (!lpd)
return 0;
lpd->display = display;
lpd->damaged = 0;
if (!init_display (lpd))
{
free (lpd);
return 0;
}
if (XSaveContext (display, 0, lp_context (), (char *) lpd) != 0)
{
free (lpd);
return 0;
}
return lpd;
}
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