xref: /illumos-gate/usr/src/ucblib/libcurses/mvwin.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
1 /*
2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
7 /*	  All Rights Reserved  	*/
8 
9 /*
10  * Copyright (c) 1980 Regents of the University of California.
11  * All rights reserved.  The Berkeley software License Agreement
12  * specifies the terms and conditions for redistribution.
13  */
14 
15 /*LINTLIBRARY*/
16 
17 #ifndef lint
18 static char
19 sccsid[] = "@(#)mvwin.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
20 #endif	/* not lint */
21 
22 #include	"curses.ext"
23 
24 /*
25  * relocate the starting position of a window
26  */
27 
28 int
29 mvwin(WINDOW *win, int by, int bx)
30 {
31 	WINDOW	*orig;
32 	int	dy, dx;
33 
34 	if (by + win->_maxy > LINES || bx + win->_maxx > COLS)
35 		return (ERR);
36 	dy = by - win->_begy;
37 	dx = bx - win->_begx;
38 	orig = win->_orig;
39 	if (orig == NULL) {
40 		orig = win;
41 		do {
42 			win->_begy += dy;
43 			win->_begx += dx;
44 			_swflags_(win);
45 			win = win->_nextp;
46 		} while (win != orig);
47 	} else {
48 		if (by < orig->_begy || win->_maxy + dy > orig->_maxy)
49 			return (ERR);
50 		if (bx < orig->_begx || win->_maxx + dx > orig->_maxx)
51 			return (ERR);
52 		win->_begy = (short)by;
53 		win->_begx = (short)bx;
54 		_swflags_(win);
55 		_set_subwin_(orig, win);
56 	}
57 	(void) touchwin(win);
58 	return (OK);
59 }
60