/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
/*        All Rights Reserved   */

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

/*LINTLIBRARY*/

#ifndef lint
static char
sccsid[] = "@(#)touchwin.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
#endif  /* not lint */

#include        "curses.ext"

/*
 * make it look like the whole window has been changed.
 *
 */

int
touchwin(WINDOW *win)
{
        int     y, maxy;

#ifdef  DEBUG
        fprintf(outf, "TOUCHWIN(%0.2o)\n", win);
#endif
        maxy = win->_maxy;
        for (y = 0; y < maxy; y++)
                (void) touchline(win, y, 0, win->_maxx - 1);
        return (OK);
}

/*
 * touch a given line
 */

int
touchline(WINDOW *win, int y, int sx, int ex)
{
#ifdef DEBUG
        fprintf(outf, "TOUCHLINE(%0.2o, %d, %d, %d)\n", win, y, sx, ex);
        fprintf(outf, "TOUCHLINE:first = %d, last = %d\n",
            win->_firstch[y], win->_lastch[y]);
#endif
        sx += win->_ch_off;
        ex += win->_ch_off;
        if (win->_firstch[y] == _NOCHANGE) {
                win->_firstch[y] = (short)sx;
                win->_lastch[y] = (short)ex;
        } else {
                if (win->_firstch[y] > sx)
                        win->_firstch[y] = (short)sx;
                if (win->_lastch[y] < ex)
                        win->_lastch[y] = (short)ex;
        }
#ifdef  DEBUG
        fprintf(outf, "TOUCHLINE:first = %d, last = %d\n",
            win->_firstch[y], win->_lastch[y]);
#endif
        return (OK);
}