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/* $NetBSD: background.c,v 1.15 2009/07/22 16:57:14 roy 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.
*
* 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 1.15 2009/07/22 16:57:14 roy Exp $");
#endif /* not lint */
#include <stdlib.h>
#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(__CTRACE_ATTR, "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(__CTRACE_ATTR, "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++) {
/* Copy character if space */
if (ch & A_CHARTEXT && win->alines[y]->line[x].ch == ' ')
win->alines[y]->line[x].ch = ch & __CHARTEXT;
/* Merge attributes */
if (win->alines[y]->line[x].attr & __ALTCHARSET)
win->alines[y]->line[x].attr =
(ch & __ATTRIBUTES) | __ALTCHARSET;
else
win->alines[y]->line[x].attr =
ch & __ATTRIBUTES;
#ifdef HAVE_WCHAR
SET_WCOL(win->alines[y]->line[x], 1);
#endif
}
__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));
}
int bkgrnd(const cchar_t *wch)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return wbkgrnd( stdscr, wch );
#endif /* HAVE_WCHAR */
}
void bkgrndset(const cchar_t *wch)
{
#ifdef HAVE_WCHAR
wbkgrndset( stdscr, wch );
#endif /* HAVE_WCHAR */
}
int getbkgrnd(cchar_t *wch)
{
#ifndef HAVE_WCHAR
return ERR;
#else
return wgetbkgrnd( stdscr, wch );
#endif /* HAVE_WCHAR */
}
int wbkgrnd(WINDOW *win, const cchar_t *wch)
{
#ifndef HAVE_WCHAR
return ERR;
#else
/* int y, x, i; */
attr_t battr;
/* nschar_t *np, *tnp, *pnp; */
#ifdef DEBUG
__CTRACE(__CTRACE_ATTR, "wbkgrnd: (%p), '%s', %x\n",
win, (const char *) wunctrl(wch), wch->attributes);
#endif
/* ignore multi-column characters */
if ( !wch->elements || wcwidth( wch->vals[ 0 ]) > 1 )
return ERR;
/* Background attributes (check colour). */
battr = wch->attributes & WA_ATTRIBUTES;
if (__using_color && !( battr & __COLOR))
battr |= __default_color;
win->battr = battr;
wbkgrndset(win, wch);
__touchwin(win);
return OK;
#endif /* HAVE_WCHAR */
}
void wbkgrndset(WINDOW *win, const cchar_t *wch)
{
#ifdef HAVE_WCHAR
attr_t battr;
nschar_t *np, *tnp;
int i;
#ifdef DEBUG
__CTRACE(__CTRACE_ATTR, "wbkgrndset: (%p), '%s', %x\n",
win, (const char *) wunctrl(wch), wch->attributes);
#endif
/* ignore multi-column characters */
if ( !wch->elements || wcwidth( wch->vals[ 0 ]) > 1 )
return;
/* Background character. */
tnp = np = win->bnsp;
if ( wcwidth( wch->vals[ 0 ]))
win->bch = wch->vals[ 0 ];
else {
if ( !np ) {
np = (nschar_t *)malloc(sizeof(nschar_t));
if (!np)
return;
np->next = NULL;
win->bnsp = np;
}
np->ch = wch->vals[ 0 ];
tnp = np;
np = np->next;
}
/* add non-spacing characters */
if ( wch->elements > 1 ) {
for ( i = 1; i < wch->elements; i++ ) {
if ( !np ) {
np = (nschar_t *)malloc(sizeof(nschar_t));
if (!np)
return;
np->next = NULL;
if ( tnp )
tnp->next = np;
else
win->bnsp = np;
}
np->ch = wch->vals[ i ];
tnp = np;
np = np->next;
}
}
/* clear the old non-spacing characters */
while ( np ) {
tnp = np->next;
free( np );
np = tnp;
}
/* Background attributes (check colour). */
battr = wch->attributes & WA_ATTRIBUTES;
if (__using_color && !( battr & __COLOR))
battr |= __default_color;
win->battr = battr;
SET_BGWCOL((*win), 1);
#endif /* HAVE_WCHAR */
}
int wgetbkgrnd(WINDOW *win, cchar_t *wch)
{
#ifndef HAVE_WCHAR
return ERR;
#else
nschar_t *np;
/* Background attributes (check colour). */
wch->attributes = win->battr & WA_ATTRIBUTES;
if (__using_color && (( wch->attributes & __COLOR )
== __default_color))
wch->attributes &= ~__default_color;
wch->vals[ 0 ] = win->bch;
wch->elements = 1;
np = win->bnsp;
if (np) {
while ( np && wch->elements < CURSES_CCHAR_MAX ) {
wch->vals[ wch->elements++ ] = np->ch;
np = np->next;
}
}
return OK;
#endif /* HAVE_WCHAR */
}
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