311 lines
6.1 KiB
C
311 lines
6.1 KiB
C
/* $NetBSD: background.c,v 1.25 2018/11/19 20:37:04 uwe Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Julian Coleman.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: background.c,v 1.25 2018/11/19 20:37:04 uwe Exp $");
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#endif /* not lint */
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#include <stdlib.h>
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#include "curses.h"
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#include "curses_private.h"
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/*
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* bkgdset
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* Set new background attributes on stdscr.
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*/
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void
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bkgdset(chtype ch)
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{
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wbkgdset(stdscr, ch);
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}
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/*
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* bkgd --
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* Set new background attributes on stdscr and apply them to its
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* contents.
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*/
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int
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bkgd(chtype ch)
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{
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return(wbkgd(stdscr, ch));
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}
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/*
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* wbkgdset
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* Set new background attributes on the specified window.
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*/
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void
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wbkgdset(WINDOW *win, chtype ch)
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{
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#ifdef DEBUG
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__CTRACE(__CTRACE_ATTR, "wbkgdset: (%p), '%s', %08x\n",
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win, unctrl(ch & __CHARTEXT), ch & __ATTRIBUTES);
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#endif
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/* Background character. */
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if (ch & __CHARTEXT)
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win->bch = (wchar_t) ch & __CHARTEXT;
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/* Background attributes (check colour). */
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if (__using_color && !(ch & __COLOR))
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ch |= __default_color;
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win->battr = (attr_t) ch & __ATTRIBUTES;
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}
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/*
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* wbkgd --
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* Set new background attributes on the specified window and
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* apply them to its contents.
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*/
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int
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wbkgd(WINDOW *win, chtype ch)
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{
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chtype obch;
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int y, x;
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#ifdef DEBUG
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__CTRACE(__CTRACE_ATTR, "wbkgd: (%p), '%s', %08x\n",
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win, unctrl(ch & __CHARTEXT), ch & __ATTRIBUTES);
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#endif
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obch = win->bch;
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wbkgdset(win, ch);
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for (y = 0; y < win->maxy; y++) {
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for (x = 0; x < win->maxx; x++) {
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__LDATA *cp = &win->alines[y]->line[x];
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/* Update/switch background characters */
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if (cp->ch == obch)
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cp->ch = win->bch;
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/* Update/merge attributes */
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cp->attr = win->battr | (cp->attr & __ALTCHARSET);
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#ifdef HAVE_WCHAR
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SET_WCOL(*cp, 1);
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#endif
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}
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}
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__touchwin(win);
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return OK;
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}
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/*
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* getbkgd --
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* Get current background attributes.
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*/
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chtype
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getbkgd(WINDOW *win)
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{
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attr_t battr;
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/* Background attributes (check colour). */
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battr = win->battr & A_ATTRIBUTES;
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if (__using_color && ((battr & __COLOR) == __default_color))
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battr &= ~__COLOR;
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return ((chtype) ((win->bch & A_CHARTEXT) | battr));
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}
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#ifdef HAVE_WCHAR
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void
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bkgrndset(const cchar_t *wch)
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{
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wbkgrndset(stdscr, wch);
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}
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int
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bkgrnd(const cchar_t *wch)
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{
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return wbkgrnd(stdscr, wch);
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}
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int
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getbkgrnd(cchar_t *wch)
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{
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return wgetbkgrnd(stdscr, wch);
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}
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void
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wbkgrndset(WINDOW *win, const cchar_t *wch)
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{
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attr_t battr;
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nschar_t *np, *tnp;
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int i;
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#ifdef DEBUG
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__CTRACE(__CTRACE_ATTR, "wbkgrndset: (%p), '%s', %x\n",
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win, (const char *) wunctrl(wch), wch->attributes);
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#endif
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/* ignore multi-column characters */
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if (!wch->elements || wcwidth(wch->vals[0]) > 1)
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return;
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/* Background character. */
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tnp = np = win->bnsp;
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if (wcwidth( wch->vals[0]))
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win->bch = wch->vals[0];
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else {
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if (!np) {
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np = malloc(sizeof(nschar_t));
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if (!np)
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return;
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np->next = NULL;
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win->bnsp = np;
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}
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np->ch = wch->vals[0];
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tnp = np;
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np = np->next;
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}
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/* add non-spacing characters */
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if (wch->elements > 1) {
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for (i = 1; i < wch->elements; i++) {
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if ( !np ) {
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np = malloc(sizeof(nschar_t));
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if (!np)
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return;
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np->next = NULL;
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if (tnp)
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tnp->next = np;
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else
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win->bnsp = np;
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}
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np->ch = wch->vals[i];
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tnp = np;
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np = np->next;
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}
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}
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/* clear the old non-spacing characters */
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while (np) {
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tnp = np->next;
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free(np);
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np = tnp;
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}
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/* Background attributes (check colour). */
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battr = wch->attributes & WA_ATTRIBUTES;
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if (__using_color && !( battr & __COLOR))
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battr |= __default_color;
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win->battr = battr;
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SET_BGWCOL((*win), 1);
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}
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int
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wbkgrnd(WINDOW *win, const cchar_t *wch)
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{
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#ifdef DEBUG
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__CTRACE(__CTRACE_ATTR, "wbkgrnd: (%p), '%s', %x\n",
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win, (const char *) wunctrl(wch), wch->attributes);
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#endif
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/* ignore multi-column characters */
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if (!wch->elements || wcwidth( wch->vals[ 0 ]) > 1)
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return ERR;
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wbkgrndset(win, wch);
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__touchwin(win);
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return OK;
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}
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int
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wgetbkgrnd(WINDOW *win, cchar_t *wch)
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{
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nschar_t *np;
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/* Background attributes (check colour). */
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wch->attributes = win->battr & WA_ATTRIBUTES;
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if (__using_color && ((wch->attributes & __COLOR) == __default_color))
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wch->attributes &= ~__COLOR;
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wch->vals[0] = win->bch;
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wch->elements = 1;
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np = win->bnsp;
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if (np) {
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while (np && wch->elements < CURSES_CCHAR_MAX) {
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wch->vals[wch->elements++] = np->ch;
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np = np->next;
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}
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}
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return OK;
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}
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#else /* !HAVE_WCHAR */
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void
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bkgrndset(const cchar_t *wch)
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{
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return;
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}
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int
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bkgrnd(const cchar_t *wch)
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{
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return ERR;
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}
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int
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getbkgrnd(cchar_t *wch)
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{
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return ERR;
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}
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void
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wbkgrndset(WINDOW *win, const cchar_t *wch)
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{
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return;
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}
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int
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wbkgrnd(WINDOW *win, const cchar_t *wch)
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{
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return ERR;
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}
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int
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wgetbkgrnd(WINDOW *win, cchar_t *wch)
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{
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return ERR;
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}
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#endif /* !HAVE_WCHAR */
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