usr/src/ucblib/libcurses/mvwin.c

   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 }