Net2/usr/src/lib/libcurses/mvwin.c

/*
 * Copyright (c) 1981 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

#ifndef lint
static char sccsid[] = "@(#)mvwin.c	5.4 (Berkeley) 6/1/90";
#endif /* not lint */

# include	"curses.ext"

/*
 * relocate the starting position of a window
 *
 */

mvwin(win, by, bx)
reg WINDOW	*win;
reg int		by, bx; {

	register WINDOW	*orig;
	register int	dy, dx;

	if (by + win->_maxy > LINES || bx + win->_maxx > COLS)
		return ERR;
	dy = by - win->_begy;
	dx = bx - win->_begx;
	orig = win->_orig;
	if (orig == NULL) {
		orig = win;
		do {
			win->_begy += dy;
			win->_begx += dx;
			_swflags_(win);
			win = win->_nextp;
		} while (win != orig);
	}
	else {
		if (by < orig->_begy || win->_maxy + dy > orig->_maxy)
			return ERR;
		if (bx < orig->_begx || win->_maxx + dx > orig->_maxx)
			return ERR;
		win->_begy = by;
		win->_begx = bx;
		_swflags_(win);
		_set_subwin_(orig, win);
	}
	touchwin(win);
	return OK;
}