wsyncdown.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <sys/types.h>
#include "curses_inc.h"
/* Make the changes in ancestors visible in win. */
void
wsyncdown(WINDOW *win)
{
short *wbch, *wech, *pbch, *pech, bch, ech, endx;
int wy, px, py, endy;
WINDOW *par;
py = win->_pary;
px = win->_parx;
endy = win->_maxy;
endx = win->_maxx - 1;
for (par = win->_parent; par != NULL; par = par->_parent) {
if (par->_flags & (_WINCHANGED | _WIN_ADD_ONE |
_WIN_INS_ONE)) {
wbch = win->_firstch;
wech = win->_lastch;
pbch = par->_firstch + py;
pech = par->_lastch + py;
for (wy = 0; wy < endy; ++wy, ++wbch, ++wech,
++pbch, ++pech) {
if (*pbch != _INFINITY) {
if ((bch = *pbch - px) < 0)
bch = 0;
if ((ech = *pech - px) > endx)
ech = endx;
if (!(bch > endx || ech < 0)) {
if (*wbch > bch)
*wbch = bch;
if (*wech < ech)
*wech = ech;
}
}
}
win->_flags |= _WINCHANGED;
}
py += par->_pary;
px += par->_parx;
}
}