447 lines
11 KiB
C
447 lines
11 KiB
C
/* $NetBSD: color.c,v 1.14 2001/01/05 22:57:56 christos 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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: color.c,v 1.14 2001/01/05 22:57:56 christos Exp $");
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#endif /* not lint */
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#include "curses.h"
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#include "curses_private.h"
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/* the following is defined and set up in setterm.c */
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extern struct tinfo *_cursesi_genbuf;
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/* Maximum colours */
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#define MAX_COLORS 64
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/* Maximum colour pairs - determined by number of colour bits in attr_t */
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#define MAX_PAIRS 64 /* PAIR_NUMBER(__COLOR) + 1 */
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/* Flags for colours and pairs */
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#define __USED 0x01
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/* List of colours */
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struct color {
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short num;
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short red;
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short green;
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short blue;
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int flags;
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} colors[MAX_COLORS];
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/* List of colour pairs */
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struct pair {
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short fore;
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short back;
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int flags;
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} pairs[MAX_PAIRS];
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/* Attributes that clash with colours */
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attr_t __nca;
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/* Style of colour manipulation */
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#define COLOR_NONE 0
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#define COLOR_ANSI 1 /* ANSI/DEC-style colour manipulation */
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#define COLOR_HP 2 /* HP-style colour manipulation */
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#define COLOR_TEK 3 /* Tektronix-style colour manipulation */
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#define COLOR_OTHER 4 /* None of the others but can set fore/back */
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int __color_type = COLOR_NONE;
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static void
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__change_pair __P((short));
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/*
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* has_colors --
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* Check if terminal has colours.
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*/
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bool
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has_colors(void)
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{
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if (__tc_Co > 0 && __tc_pa > 0 && ((__tc_AF != NULL &&
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__tc_AB != NULL) || __tc_Ip != NULL || __tc_Ic != NULL ||
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(__tc_Sb != NULL && __tc_Sf != NULL)))
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return(TRUE);
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else
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return(FALSE);
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}
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/*
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* can_change_colors --
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* Check if terminal can change colours.
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*/
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bool
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can_change_colors(void)
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{
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if (__tc_cc)
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return(TRUE);
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else
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return(FALSE);
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}
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/*
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* start_color --
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* Initialise colour support.
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*/
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int
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start_color(void)
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{
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int i;
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attr_t temp_nc;
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if (has_colors() == FALSE)
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return(ERR);
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/* Max colours and colour pairs */
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if (__tc_Co == -1)
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COLORS = 0;
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else {
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COLORS = __tc_Co > MAX_COLORS ? MAX_COLORS : __tc_Co;
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if (__tc_pa == -1) {
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COLOR_PAIRS = 0;
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COLORS = 0;
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} else {
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COLOR_PAIRS = __tc_pa > MAX_PAIRS ? MAX_PAIRS : __tc_pa;
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}
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}
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if (!COLORS)
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return (ERR);
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/* Reset terminal colour and colour pairs. */
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if (__tc_oc != NULL)
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tputs(__tc_oc, 0, __cputchar);
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if (__tc_op != NULL) {
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tputs(__tc_op, 0, __cputchar);
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curscr->wattr &= __mask_op;
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}
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/* Type of colour manipulation - ANSI/TEK/HP/other */
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if (__tc_AF != NULL && __tc_AB != NULL)
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__color_type = COLOR_ANSI;
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else if (__tc_Ip != NULL)
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__color_type = COLOR_HP;
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else if (__tc_Ic != NULL)
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__color_type = COLOR_TEK;
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else if (__tc_Sb != NULL && __tc_Sf != NULL)
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__color_type = COLOR_OTHER;
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else
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return(ERR); /* Unsupported colour method */
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#ifdef DEBUG
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__CTRACE("start_color: COLORS = %d, COLOR_PAIRS = %d",
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COLORS, COLOR_PAIRS);
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switch (__color_type) {
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case COLOR_ANSI:
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__CTRACE(" (ANSI style)\n");
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break;
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case COLOR_HP:
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__CTRACE(" (HP style)\n");
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break;
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case COLOR_TEK:
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__CTRACE(" (Tektronics style)\n");
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break;
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case COLOR_OTHER:
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__CTRACE(" (Other style)\n");
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break;
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}
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#endif
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/*
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* Attributes that cannot be used with color.
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* Store these in an attr_t for wattrset()/wattron().
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*/
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__nca = __NORMAL;
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if (__tc_NC != -1) {
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temp_nc = (attr_t) t_getnum(_cursesi_genbuf, "NC");
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if (temp_nc & 0x0001)
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__nca |= __STANDOUT;
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if (temp_nc & 0x0002)
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__nca |= __UNDERSCORE;
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if (temp_nc & 0x0004)
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__nca |= __REVERSE;
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if (temp_nc & 0x0008)
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__nca |= __BLINK;
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if (temp_nc & 0x0010)
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__nca |= __DIM;
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if (temp_nc & 0x0020)
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__nca |= __BOLD;
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if (temp_nc & 0x0040)
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__nca |= __BLANK;
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if (temp_nc & 0x0080)
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__nca |= __PROTECT;
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if (temp_nc & 0x0100)
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__nca |= __ALTCHARSET;
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}
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#ifdef DEBUG
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__CTRACE ("start_color: __nca = %d\n", __nca);
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#endif
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/* Set up initial 8 colours */
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if (COLORS >= COLOR_BLACK)
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(void) init_color(COLOR_BLACK, 0, 0, 0);
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if (COLORS >= COLOR_RED)
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(void) init_color(COLOR_RED, 1000, 0, 0);
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if (COLORS >= COLOR_GREEN)
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(void) init_color(COLOR_GREEN, 0, 1000, 0);
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if (COLORS >= COLOR_YELLOW)
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(void) init_color(COLOR_YELLOW, 1000, 1000, 0);
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if (COLORS >= COLOR_BLUE)
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(void) init_color(COLOR_BLUE, 0, 0, 1000);
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if (COLORS >= COLOR_MAGENTA)
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(void) init_color(COLOR_MAGENTA, 1000, 0, 1000);
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if (COLORS >= COLOR_CYAN)
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(void) init_color(COLOR_CYAN, 0, 1000, 1000);
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if (COLORS >= COLOR_WHITE)
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(void) init_color(COLOR_WHITE, 1000, 1000, 1000);
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/* Initialise other colours */
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for (i = 8; i < COLORS; i++) {
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colors[i].red = 0;
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colors[i].green = 0;
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colors[i].blue = 0;
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colors[i].flags = 0;
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}
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/* Initialise colour pairs to default (white on black) */
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for (i = 0; i < COLOR_PAIRS; i++) {
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pairs[i].fore = COLOR_WHITE;
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pairs[i].back = COLOR_BLACK;
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pairs[i].flags = 0;
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}
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return(OK);
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}
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/*
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* init_pair --
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* Set pair foreground and background colors.
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*/
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int
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init_pair(short pair, short fore, short back)
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{
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int changed;
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#ifdef DEBUG
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__CTRACE("init_pair: %d, %d, %d\n", pair, fore, back);
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#endif
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if (pair < 0 || pair >= COLOR_PAIRS)
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return (ERR);
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if (fore < 0 || fore >= COLORS)
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return (ERR);
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if (back < 0 || back >= COLORS)
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return (ERR);
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if ((pairs[pair].flags & __USED) && (fore != pairs[pair].fore ||
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back != pairs[pair].back))
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changed = 1;
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else
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changed = 0;
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pairs[pair].flags |= __USED;
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pairs[pair].fore = fore;
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pairs[pair].back = back;
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/* XXX: need to initialise HP style (Ip) */
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if (changed)
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__change_pair(pair);
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return (OK);
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}
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/*
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* pair_content --
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* Get pair foreground and background colours.
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*/
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int
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pair_content(short pair, short *forep, short *backp)
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{
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if (pair < 0 || pair >= COLOR_PAIRS)
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return(ERR);
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*forep = pairs[pair].fore;
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*backp = pairs[pair].back;
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return(OK);
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}
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/*
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* init_color --
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* Set colour red, green and blue values.
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*/
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int
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init_color(short color, short red, short green, short blue)
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{
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#ifdef DEBUG
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__CTRACE("init_color: %d, %d, %d, %d\n", color, red, green, blue);
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#endif
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if (color < 0 || color >= COLORS)
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return(ERR);
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colors[color].red = red;
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colors[color].green = green;
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colors[color].blue = blue;
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/* XXX Not yet implemented */
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return(ERR);
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/* XXX: need to initialise Tek style (Ic) and support HLS */
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}
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/*
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* color_content --
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* Get colour red, green and blue values.
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*/
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int
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color_content(short color, short *redp, short *greenp, short *bluep)
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{
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if (color < 0 || color >= COLORS)
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return(ERR);
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*redp = colors[color].red;
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*greenp = colors[color].green;
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*bluep = colors[color].blue;
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return(OK);
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}
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/*
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* __set_color --
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* Set terminal foreground and background colours.
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*/
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void
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__set_color(attr_t attr)
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{
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short pair;
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pair = PAIR_NUMBER((u_int32_t)attr);
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#ifdef DEBUG
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__CTRACE("__set_color: %d, %d, %d\n", pair, pairs[pair].fore,
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pairs[pair].back);
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#endif
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switch (__color_type) {
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/* Set ANSI forground and background colours */
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case COLOR_ANSI:
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tputs(__parse_cap(__tc_AF, pairs[pair].fore), 0, __cputchar);
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tputs(__parse_cap(__tc_AB, pairs[pair].back), 0, __cputchar);
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break;
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case COLOR_HP:
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/* XXX: need to support HP style */
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break;
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case COLOR_TEK:
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/* XXX: need to support Tek style */
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break;
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case COLOR_OTHER:
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tputs(__parse_cap(__tc_Sf, pairs[pair].fore), 0, __cputchar);
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tputs(__parse_cap(__tc_Sb, pairs[pair].back), 0, __cputchar);
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break;
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}
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}
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/*
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* __restore_colors --
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* Redo color definitions after restarting 'curses' mode.
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*/
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void
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__restore_colors(void)
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{
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if (__tc_cc != NULL)
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switch (__color_type) {
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case COLOR_HP:
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/* XXX: need to re-initialise HP style (Ip) */
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break;
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case COLOR_TEK:
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/* XXX: need to re-initialise Tek style (Ic) */
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break;
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}
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}
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/*
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* __change_pair --
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* Mark dirty all positions using pair.
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*/
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void
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__change_pair(short pair)
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{
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struct __winlist *wlp;
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WINDOW *win;
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int y, x;
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for (wlp = __winlistp; wlp != NULL; wlp = wlp->nextp) {
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#ifdef DEBUG
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__CTRACE("__change_pair: win = %0.2o\n", wlp->winp);
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#endif
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if (wlp->winp == curscr) {
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/* Reset colour attribute on curscr */
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#ifdef DEBUG
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__CTRACE("__change_pair: win == curscr\n");
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#endif
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for (y = 0; y < curscr->maxy; y++)
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for (x = 0; x < curscr->maxx; x++)
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if ((curscr->lines[y]->line[x].attr &
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__COLOR) == COLOR_PAIR(pair))
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curscr->lines[y]->line[x].attr
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&= ~__COLOR;
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} else {
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/* Mark dirty those positions with color pair "pair" */
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win = wlp->winp;
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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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if ((win->lines[y]->line[x].attr &
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__COLOR) == COLOR_PAIR(pair)) {
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if (!(win->lines[y]->flags &
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__ISDIRTY))
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win->lines[y]->flags |=
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__ISDIRTY;
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/*
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* firstchp/lastchp are shared
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* between parent window and
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* sub-window.
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*/
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if (*win->lines[y]->firstchp >
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x)
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*win->lines[y]->firstchp
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= x;
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if (*win->lines[y]->lastchp < x)
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*win->lines[y]->lastchp
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= x;
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}
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#ifdef DEBUG
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if ((win->lines[y]->flags & __ISDIRTY))
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__CTRACE("__change_pair: first = %d, last = %d\n", *win->lines[y]->firstchp, *win->lines[y]->lastchp);
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#endif
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}
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}
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}
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}
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