1/*	$NetBSD: update.c,v 1.1 2015/10/26 23:09:49 uwe Exp $ */
2
3/*
4 * Copyright (c) 2015 Valery Ushakov
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__RCSID("$NetBSD: update.c,v 1.1 2015/10/26 23:09:49 uwe Exp $");
30
31#include "panel_impl.h"
32
33
34void
35update_panels(void)
36{
37	PANEL *p;
38
39	/*
40	 * For each panel tell panels above it they need to refresh
41	 * regions that overlap (are above) this panel.  This ensures
42	 * that even if a panel below was touched, it's still
43	 * overwritten by a panel above.
44	 *
45	 * Note that we also need to do this during "destructive"
46	 * operations (hide, move, replace window - which see).
47	 */
48	FOREACH_PANEL (p) {
49		PANEL *above = p;
50		while ((above = PANEL_ABOVE(above)) != NULL) {
51			touchoverlap(p->win, above->win);
52		}
53	}
54
55	/*
56	 * This is what effects Z-order: the window updated later
57	 * overwrites contents of the windows below (before) it.
58	 */
59	FOREACH_PANEL (p) {
60		wnoutrefresh(p->win);
61	}
62}
63