NetBSD/lib/libcurses/background.c

136 lines
3.8 KiB
C

/* $NetBSD: background.c,v 1.8 2003/02/17 11:07:19 dsl Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Julian Coleman.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: background.c,v 1.8 2003/02/17 11:07:19 dsl Exp $");
#endif /* not lint */
#include "curses.h"
#include "curses_private.h"
/*
* bkgdset
* Set new background attributes on stdscr.
*/
void
bkgdset(chtype ch)
{
wbkgdset(stdscr, ch);
}
/*
* bkgd --
* Set new background and new background attributes on stdscr.
*/
int
bkgd(chtype ch)
{
return(wbkgd(stdscr, ch));
}
/*
* wbkgdset
* Set new background attributes.
*/
void
wbkgdset(WINDOW *win, chtype ch)
{
#ifdef DEBUG
__CTRACE("wbkgdset: (%p), '%s', %08x\n",
win, unctrl(ch & +__CHARTEXT), ch & __ATTRIBUTES);
#endif
/* Background character. */
if (ch & __CHARTEXT)
win->bch = (wchar_t) ch & __CHARTEXT;
/* Background attributes (check colour). */
if (__using_color && !(ch & __COLOR))
ch |= __default_color;
win->battr = (attr_t) ch & __ATTRIBUTES;
}
/*
* wbkgd --
* Set new background and new background attributes.
*/
int
wbkgd(WINDOW *win, chtype ch)
{
int y, x;
#ifdef DEBUG
__CTRACE("wbkgd: (%p), '%s', %08x\n",
win, unctrl(ch & +__CHARTEXT), ch & __ATTRIBUTES);
#endif
/* Background attributes (check colour). */
if (__using_color && !(ch & __COLOR))
ch |= __default_color;
win->battr = (attr_t) ch & __ATTRIBUTES;
wbkgdset(win, ch);
for (y = 0; y < win->maxy; y++)
for (x = 0; x < win->maxx; x++) {
if (ch & A_CHARTEXT)
win->lines[y]->line[x].bch = ch & __CHARTEXT;
win->lines[y]->line[x].battr =
(attr_t) ch & __ATTRIBUTES;
}
__touchwin(win);
return(OK);
}
/*
* getbkgd --
* Get current background attributes.
*/
chtype
getbkgd(WINDOW *win)
{
attr_t battr;
/* Background attributes (check colour). */
battr = win->battr & A_ATTRIBUTES;
if (__using_color && ((battr & __COLOR) == __default_color))
battr &= ~__default_color;
return ((chtype) ((win->bch & A_CHARTEXT) | battr));
}