xref: /src/lib/libcurses/overlay.c

/*	$NetBSD: overlay.c,v 1.16.12.1 2007/01/21 17:43:35 jdc Exp $	*/

/*
 * Copyright (c) 1981, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)overlay.c	8.2 (Berkeley) 5/4/94";
#else
__RCSID("$NetBSD: overlay.c,v 1.16.12.1 2007/01/21 17:43:35 jdc Exp $");
#endif
#endif				/* not lint */

#include <ctype.h>

#include "curses.h"
#include "curses_private.h"

/*
 * overlay --
 *	Writes win1 on win2 non-destructively.
 */
int
overlay(const WINDOW *win1, WINDOW *win2)
{

#ifdef DEBUG
	__CTRACE(__CTRACE_WINDOW, "overlay: (%p, %p);\n", win1, win2);
#endif
	return copywin(win1, win2,
			win2->begy - win1->begy, win2->begx - win1->begx,
			0, 0, win2->maxy - 1, win2->maxx - 1, TRUE);
}