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mvwin.c revision 1.15 
      1 /*	$NetBSD: mvwin.c,v 1.15 2003/08/07 16:44:22 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1981, 1993, 1994
      5  *	The Regents of the University of California.  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  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)mvwin.c	8.2 (Berkeley) 5/4/94";
     36 #else
     37 __RCSID("$NetBSD: mvwin.c,v 1.15 2003/08/07 16:44:22 agc Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include "curses.h"
     42 #include "curses_private.h"
     43 
     44 /*
     45  * mvderwin --
     46  *      Move a derived window.
     47  *
     48  */
     49 int
     50 mvderwin(WINDOW *win, int dy, int dx)
     51 {
     52 	WINDOW *parent;
     53 	int x, y;
     54 
     55 	if (win == NULL)
     56 		return ERR;
     57 
     58 	parent = win->orig;
     59 
     60 	if (parent == NULL)
     61 		return ERR;
     62 
     63 	x = parent->begx + dx;
     64 	y = parent->begy + dy;
     65 	return mvwin(win, y, x);
     66 }
     67 
     68 /*
     69  * mvwin --
     70  *	Relocate the starting position of a window.
     71  */
     72 int
     73 mvwin(WINDOW *win, int by, int bx)
     74 {
     75 	WINDOW *orig;
     76 	int     dy, dx;
     77 
     78 	if (by < 0 || by + win->maxy > LINES || bx < 0 || bx + win->maxx > COLS)
     79 		return (ERR);
     80 	dy = by - win->begy;
     81 	dx = bx - win->begx;
     82 	orig = win->orig;
     83 	if (orig == NULL) {
     84 		orig = win;
     85 		do {
     86 			win->begy += dy;
     87 			win->begx += dx;
     88 			__swflags(win);
     89 			win = win->nextp;
     90 		} while (win != orig);
     91 	} else {
     92 		if (by < orig->begy || win->maxy + dy > orig->maxy)
     93 			return (ERR);
     94 		if (bx < orig->begx || win->maxx + dx > orig->maxx)
     95 			return (ERR);
     96 		win->begy = by;
     97 		win->begx = bx;
     98 		__swflags(win);
     99 		__set_subwin(orig, win);
    100 	}
    101 	__touchwin(win);
    102 	return (OK);
    103 }
    104