libc/xcurses/color.c

/*
 * 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 (c) 1995, by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * color.c
 *
 * XCurses Library
 *
 * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
 *
 */

#ifdef M_RCSID
#ifndef lint
static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/color.c 1.2 1995/10/02 15:15:02 ant Exp $";
#endif
#endif

#include <private.h>
#include <stdlib.h>

int
start_color()
{
    int code = ERR;

#ifdef M_CURSES_TRACE
    __m_trace("start_color(void)");
#endif

    COLORS = max_colors;
    COLOR_PAIRS = max_pairs;

    if (orig_colors != (char *) 0)
        (void) tputs(orig_colors, 1, __m_outc);

    if (orig_pair != (char *) 0)
        (void) tputs(orig_pair, 1, __m_outc);

    if (0 < max_colors) {
        cur_term->_color = calloc(max_colors, sizeof *cur_term->_color);
        if (cur_term->_color == (short (*)[3]) 0)
            goto error1;
    }

    if (0 < max_pairs) {
        cur_term->_pair = calloc(max_pairs, sizeof *cur_term->_pair);
        if (cur_term->_pair == (short (*)[2]) 0)
            goto error2;
    }

    return __m_return_code("start_color", OK);
error2:
    if (cur_term->_color != (short (*)[3]) 0)
        free(cur_term->_color);
error1:
    return __m_return_code("start_color", ERR);
}

int
init_color(short color, short r, short g, short b)
{
    int code = ERR;

#ifdef M_CURSES_TRACE
    __m_trace("init_color(%d, %d, %d, %d)", color, r, g, b);
#endif

    if (!can_change || color < 0 || max_colors <= color
    || r < 0 || 1000 < r
    || g < 0 || 1000 < g
    || b < 0 || 1000 < b)
        goto error;

    /* Remember color settings for future queries. */
    cur_term->_color[color][0] = r;
    cur_term->_color[color][1] = g;
    cur_term->_color[color][2] = b;

    code = OK;

    /* Set the color. */
    if (initialize_color != (char *) 0) {
        code = tputs(
            tparm(
                initialize_color, (long) color,
                (long) r, (long) g, (long) b,
                0L, 0L, 0L, 0L, 0L
            ), 1, __m_outc
        );
    }
error:
    return __m_return_code("init_color", code);
}

int
init_pair(short pair, short f, short b)
{
    int code = ERR;

#ifdef M_CURSES_TRACE
    __m_trace("init_pair(%d, %d, %d)", pair, f, b);
#endif

    if (pair < 0 || max_pairs <= pair
    || f < 0 || max_colors <= f
    || b < 0 || max_colors <= b)
        goto error;

    /* Remember color-pair settings for future queries. */
    cur_term->_pair[pair][0] = f;
    cur_term->_pair[pair][1] = b;

    code = OK;

    /* Set color-pair (foreground-background). */
    if (initialize_pair == (char *) 0) {
        code = tputs(
            tparm(
                initialize_pair,
                (long) cur_term->_pair[f][0],
                (long) cur_term->_pair[f][1],
                (long) cur_term->_pair[f][2],
                (long) cur_term->_pair[b][0],
                (long) cur_term->_pair[b][1],
                (long) cur_term->_pair[b][2],
                0L, 0L, 0L
            ), 1, __m_outc
        );
    }
error:
    return __m_return_code("init_pair", code);
}

int
color_content(short color, short *r, short *g, short *b)
{
#ifdef M_CURSES_TRACE
    __m_trace("color_content(%d, %p, %p, %p)", color, r, g, b);
#endif

    if (color < 0 || max_colors <= color)
        return __m_return_code("color_content", ERR);

    /* There does not appear to be a terminfo entry to query the
     * color settings, so we retain them in an array for quick
     * access.
     */
    *r = cur_term->_color[color][0];
    *g = cur_term->_color[color][1];
    *b = cur_term->_color[color][2];

    return __m_return_code("color_content", OK);
}

int
pair_content(short pair, short *f, short *b)
{
#ifdef M_CURSES_TRACE
    __m_trace("pair_content(%d, %p, %p)", pair, f, b);
#endif
    if (pair < 0 || max_pairs <= pair)
        return __m_return_code("pair_content", ERR);

    /* There does not appear to be a terminfo entry to query the
     * color-pair settings, so we retain them in an array for quick
     * access.
     */
    *f = cur_term->_pair[pair][0];
    *b = cur_term->_pair[pair][1];

    return __m_return_code("pair_content", OK);
}