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      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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     16 
     17 /*LINTLIBRARY*/
     18 
     19 #ifndef lint
     20 static char
     21 sccsid[] = "@(#)mvwin.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
     22 #endif	/* not lint */
     23 
     24 #include	"curses.ext"
     25 
     26 /*
     27  * relocate the starting position of a window
     28  */
     29 
     30 int
     31 mvwin(WINDOW *win, int by, int bx)
     32 {
     33 	WINDOW	*orig;
     34 	int	dy, dx;
     35 
     36 	if (by + win->_maxy > LINES || bx + win->_maxx > COLS)
     37 		return (ERR);
     38 	dy = by - win->_begy;
     39 	dx = bx - win->_begx;
     40 	orig = win->_orig;
     41 	if (orig == NULL) {
     42 		orig = win;
     43 		do {
     44 			win->_begy += dy;
     45 			win->_begx += dx;
     46 			_swflags_(win);
     47 			win = win->_nextp;
     48 		} while (win != orig);
     49 	} else {
     50 		if (by < orig->_begy || win->_maxy + dy > orig->_maxy)
     51 			return (ERR);
     52 		if (bx < orig->_begx || win->_maxx + dx > orig->_maxx)
     53 			return (ERR);
     54 		win->_begy = (short)by;
     55 		win->_begx = (short)bx;
     56 		_swflags_(win);
     57 		_set_subwin_(orig, win);
     58 	}
     59 	(void) touchwin(win);
     60 	return (OK);
     61 }
     62