/*
* 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"
/* Change the background of a window. nbkgd : new background. */
int
wbkgd(WINDOW *win, chtype nbkgd)
{
short maxx;
int x, y;
chtype *wcp, obkgda, obkgdc, nbkgda,
nbkgdc, acolor, c;
short *begch, *endch;
/* if 'nbkgd' contains color information, but this is not a color */
/* terminal, erase that information. */
if ((nbkgd & A_COLOR) && (cur_term->_pairs_tbl == NULL))
nbkgd &= ~A_COLOR;
if (nbkgd == win->_bkgd)
return (OK);
obkgdc = _CHAR(win->_bkgd);
obkgda = _ATTR(win->_bkgd);
nbkgdc = _CHAR(nbkgd);
nbkgda = _ATTR(nbkgd);
/* switch byte order if necessary */
if (ISCBIT(nbkgdc))
nbkgdc = _CHAR((RBYTE(nbkgdc) << 8) | (LBYTE(nbkgdc)|MBIT)) |
CBIT;
c = RBYTE(nbkgdc);
if ((nbkgdc < ' ' || nbkgdc == _CTRL('?')) ||
_curs_scrwidth[TYPE(c)] > 1)
nbkgdc = obkgdc;
nbkgd = (nbkgdc & ~CBIT) | nbkgda;
win->_bkgd = nbkgd;
/* delete the old background from the attribute field and replace */
/* it with the new background. Note: if the same attribute was */
/* first set by wbkgd() and then by wattron(), or vice versa, it */
/* will be deleted, so the effect of wattron() will be lost. */
/* This applies to both video and color attributes. */
if ((acolor = (win->_attrs & A_COLOR)) != 0) {
if (acolor == (obkgda & A_COLOR)) {
win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda);
} else {
win->_attrs = _ATTR((win->_attrs &
(~obkgda | A_COLOR)) | (nbkgda & ~A_COLOR));
}
} else
win->_attrs = _ATTR((win->_attrs & ~obkgda) | nbkgda);
maxx = win->_maxx - 1;
begch = win->_firstch;
endch = win->_lastch;
for (y = win->_maxy-1; y >= 0; --y, ++begch, ++endch) {
for (x = maxx, wcp = win->_y[y]; x-- >= 0; ++wcp) {
if ((c = _CHAR(*wcp)) == obkgdc)
c = nbkgdc;
if ((acolor = (*wcp & A_COLOR)) != 0) {
if (acolor == (obkgda & A_COLOR))
*wcp = c | _ATTR((*wcp & ~obkgda) |
nbkgda);
else
*wcp = c | _ATTR((*wcp & (~obkgda |
A_COLOR)) | (nbkgda & ~A_COLOR));
} else
*wcp = c | _ATTR((*wcp & ~obkgda) | nbkgda);
}
*begch = 0;
*endch = maxx;
}
win->_flags |= _WINCHANGED;
if (win->_sync)
wsyncup(win);
return (win->_immed ? wrefresh(win) : OK);
}