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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"
int
_xlightpipe_lp_context (void)
{
static int context;
while (!context)
context = XUniqueContext ();
return context;
}
light_pipe_window *
_xlightpipe_find_window (Display *display, Window window)
{
light_pipe_window *lpw;
if (XFindContext (display, window, _xlightpipe_lp_context (), (XPointer *) &lpw) != 0)
return 0;
return lpw;
}
light_pipe_window *
_xlightpipe_add_window (Display *display, Window window, Bool provide_region)
{
light_pipe_window *lpw;
if (XFindContext (display, window, _xlightpipe_lp_context (), (XPointer *) &lpw) == 0)
return 0;
lpw = malloc (sizeof (light_pipe_window));
if (!lpw)
return 0;
if (XSaveContext (display, window, _xlightpipe_lp_context (), (char *) lpw) != 0)
{
free (lpw);
return 0;
}
if (provide_region)
lpw->public.damage_region = XCreateRegion ();
else
lpw->public.damage_region = NULL;
if (!_xlightpipe_init_window (display, window, lpw))
{
XDeleteContext (display, window, _xlightpipe_lp_context());
free (lpw);
return 0;
}
return lpw;
}
void
_xlightpipe_remove_window (Display *display, Window window)
{
light_pipe_window *lpw;
if (!XFindContext (display, window, _xlightpipe_lp_context (), (XPointer *) &lpw))
return;
(void) XDeleteContext (display, window, _xlightpipe_lp_context ());
_xlightpipe_fini_window (display, window, lpw);
if (lpw->public.damage_region)
XDestroyRegion (lpw->public.damage_region);
free (lpw);
}
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