usr/src/lib/libcurses/mvwin.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)mvwin.c     5.1 (Berkeley) %G%";
#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;
}