/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*      Copyright (c) 1988 AT&T */
/*        All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

/*LINTLIBRARY*/

#include        <sys/types.h>
#include        "curses_inc.h"

/* Sync the changes in a window with its ancestors. */

void
wsyncup(WINDOW *win)
{
        short   *wbch, *wech, *pbch, *pech, bch, ech;
        int     wy, px, py, endy;
        WINDOW  *par;

        for (par = win->_parent; par != NULL; win = par, par = par->_parent) {
                py = win->_pary;
                px = win->_parx;
                endy = win->_maxy;

                wbch = win->_firstch;
                wech = win->_lastch;
                pbch = par->_firstch+ py;
                pech = par->_lastch+ py;

                /*
                 * I don't think we need check WINCHANGED first.
                 * The reasoning is that all internal calls will have come
                 * from a function that did change the window.  And assumably
                 * all external calls will work the same way.
                 */
                par->_flags |= _WINCHANGED;
                /* check each line */
                for (wy = 0; wy < endy; ++wy, ++wbch, ++wech, ++pbch, ++pech)
                        if (*wbch != _INFINITY) {
                                bch = px + *wbch;
                                ech = px + *wech;
                                if (*pbch > bch)
                                        *pbch = bch;
                                if (*pech < ech)
                                        *pech = ech;
                        }
        }
}

void
wcursyncup(WINDOW *win)
{
        WINDOW  *par = win->_parent;

        while (par != NULL) {
                par->_cury = win->_cury + win->_pary;
                par->_curx = win->_curx + win->_parx;
                par = (win = par)->_parent;
        }
}