978ab4ad4e
cell, as they are merged when characters are added. Remove the per cell storage and clarify the manual page. Pointed out by ruibiao@.
675 lines
16 KiB
C
675 lines
16 KiB
C
/* $NetBSD: color.c,v 1.30 2006/01/15 11:43:54 jdc 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 1.30 2006/01/15 11:43:54 jdc 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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/* Have we initialised colours? */
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int __using_color = 0;
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/* Default colour number */
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attr_t __default_color = 0;
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/* Default colour pair values - white on black. */
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struct __pair __default_pair = {COLOR_WHITE, COLOR_BLACK, 0};
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/* Default colour values */
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/* Flags for colours and pairs */
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#define __USED 0x01
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static void
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__change_pair(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_color --
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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_color(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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struct __winlist *wlp;
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WINDOW *win;
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int y, x;
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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 - 1 ?
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MAX_PAIRS - 1 : __tc_pa);
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/* Use the last colour pair for curses default. */
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__default_color = COLOR_PAIR(MAX_PAIRS - 1);
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}
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}
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if (!COLORS)
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return (ERR);
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_cursesi_screen->COLORS = COLORS;
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_cursesi_screen->COLOR_PAIRS = COLOR_PAIRS;
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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 &= _cursesi_screen->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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_cursesi_screen->color_type = COLOR_ANSI;
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else if (__tc_Ip != NULL)
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_cursesi_screen->color_type = COLOR_HP;
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else if (__tc_Ic != NULL)
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_cursesi_screen->color_type = COLOR_TEK;
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else if (__tc_Sb != NULL && __tc_Sf != NULL)
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_cursesi_screen->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 (_cursesi_screen->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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_cursesi_screen->nca = __NORMAL;
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if (__tc_NC != -1) {
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temp_nc = (attr_t) t_getnum(_cursesi_screen->cursesi_genbuf, "NC");
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if (temp_nc & 0x0001)
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_cursesi_screen->nca |= __STANDOUT;
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if (temp_nc & 0x0002)
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_cursesi_screen->nca |= __UNDERSCORE;
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if (temp_nc & 0x0004)
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_cursesi_screen->nca |= __REVERSE;
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if (temp_nc & 0x0008)
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_cursesi_screen->nca |= __BLINK;
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if (temp_nc & 0x0010)
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_cursesi_screen->nca |= __DIM;
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if (temp_nc & 0x0020)
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_cursesi_screen->nca |= __BOLD;
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if (temp_nc & 0x0040)
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_cursesi_screen->nca |= __BLANK;
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if (temp_nc & 0x0080)
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_cursesi_screen->nca |= __PROTECT;
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if (temp_nc & 0x0100)
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_cursesi_screen->nca |= __ALTCHARSET;
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}
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#ifdef DEBUG
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__CTRACE ("start_color: _cursesi_screen->nca = %08x\n",
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_cursesi_screen->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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_cursesi_screen->colours[i].red = 0;
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_cursesi_screen->colours[i].green = 0;
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_cursesi_screen->colours[i].blue = 0;
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_cursesi_screen->colours[i].flags = 0;
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}
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/* Initialise pair 0 to default colours. */
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_cursesi_screen->colour_pairs[0].fore = -1;
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_cursesi_screen->colour_pairs[0].back = -1;
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_cursesi_screen->colour_pairs[0].flags = 0;
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/* Initialise user colour pairs to default (white on black) */
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for (i = 0; i < COLOR_PAIRS; i++) {
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_cursesi_screen->colour_pairs[i].fore = COLOR_WHITE;
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_cursesi_screen->colour_pairs[i].back = COLOR_BLACK;
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_cursesi_screen->colour_pairs[i].flags = 0;
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}
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/* Initialise default colour pair. */
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore =
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__default_pair.fore;
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back =
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__default_pair.back;
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags =
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__default_pair.flags;
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__using_color = 1;
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/* Set all positions on all windows to curses default colours. */
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for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) {
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win = wlp->winp;
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if (wlp->winp != __virtscr && wlp->winp != curscr) {
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/* Set color attribute on other windows */
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win->battr |= __default_color;
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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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win->lines[y]->line[x].attr &= ~__COLOR;
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win->lines[y]->line[x].attr |= __default_color;
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}
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}
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__touchwin(win);
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}
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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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* Our default colour ordering is ANSI - 1 = red, 4 = blue, 3 = yellow,
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* 6 = cyan. The older style (Sb/Sf) uses 1 = blue, 4 = red, 3 = cyan,
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* 6 = yellow, so we swap them here and in pair_content().
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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 >= COLORS)
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return (ERR);
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if (back >= COLORS)
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return (ERR);
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/* Swap red/blue and yellow/cyan */
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if (_cursesi_screen->color_type == COLOR_OTHER) {
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switch (fore) {
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case COLOR_RED:
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fore = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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fore = COLOR_RED;
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break;
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case COLOR_YELLOW:
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fore = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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fore = COLOR_YELLOW;
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break;
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}
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switch (back) {
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case COLOR_RED:
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back = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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back = COLOR_RED;
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break;
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case COLOR_YELLOW:
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back = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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back = COLOR_YELLOW;
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break;
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}
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}
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if ((_cursesi_screen->colour_pairs[pair].flags & __USED) &&
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(fore != _cursesi_screen->colour_pairs[pair].fore ||
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back != _cursesi_screen->colour_pairs[pair].back))
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changed = 1;
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else
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changed = 0;
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_cursesi_screen->colour_pairs[pair].flags |= __USED;
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_cursesi_screen->colour_pairs[pair].fore = fore;
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_cursesi_screen->colour_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 > _cursesi_screen->COLOR_PAIRS)
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return(ERR);
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*forep = _cursesi_screen->colour_pairs[pair].fore;
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*backp = _cursesi_screen->colour_pairs[pair].back;
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/* Swap red/blue and yellow/cyan */
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if (_cursesi_screen->color_type == COLOR_OTHER) {
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switch (*forep) {
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case COLOR_RED:
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*forep = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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*forep = COLOR_RED;
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break;
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case COLOR_YELLOW:
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*forep = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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*forep = COLOR_YELLOW;
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break;
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}
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switch (*backp) {
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case COLOR_RED:
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*backp = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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*backp = COLOR_RED;
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break;
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case COLOR_YELLOW:
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*backp = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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*backp = COLOR_YELLOW;
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break;
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}
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}
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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 >= _cursesi_screen->COLORS)
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return(ERR);
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_cursesi_screen->colours[color].red = red;
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_cursesi_screen->colours[color].green = green;
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_cursesi_screen->colours[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 >= _cursesi_screen->COLORS)
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return(ERR);
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*redp = _cursesi_screen->colours[color].red;
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*greenp = _cursesi_screen->colours[color].green;
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*bluep = _cursesi_screen->colours[color].blue;
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return(OK);
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}
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/*
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* use_default_colors --
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* Use terminal default colours instead of curses default colour.
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*/
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int
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use_default_colors()
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{
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#ifdef DEBUG
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__CTRACE("use_default_colors\n");
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#endif
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return(assume_default_colors(-1, -1));
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}
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/*
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* assume_default_colors --
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* Set the default foreground and background colours.
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*/
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int
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assume_default_colors(short fore, short back)
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{
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#ifdef DEBUG
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__CTRACE("assume_default_colors: %d, %d\n", fore, back);
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#endif
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/* Swap red/blue and yellow/cyan */
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if (_cursesi_screen->color_type == COLOR_OTHER) {
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switch (fore) {
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case COLOR_RED:
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fore = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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fore = COLOR_RED;
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break;
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case COLOR_YELLOW:
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fore = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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fore = COLOR_YELLOW;
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break;
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}
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switch (back) {
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case COLOR_RED:
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back = COLOR_BLUE;
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break;
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case COLOR_BLUE:
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back = COLOR_RED;
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break;
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case COLOR_YELLOW:
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back = COLOR_CYAN;
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break;
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case COLOR_CYAN:
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back = COLOR_YELLOW;
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break;
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}
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}
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__default_pair.fore = fore;
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__default_pair.back = back;
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__default_pair.flags = __USED;
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if (COLOR_PAIRS) {
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].fore = fore;
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].back = back;
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_cursesi_screen->colour_pairs[PAIR_NUMBER(__default_color)].flags = __USED;
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}
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/*
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* If we've already called start_color(), make sure all instances
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* of the curses default colour pair are dirty.
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*/
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if (__using_color)
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__change_pair(PAIR_NUMBER(__default_color));
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return(OK);
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}
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/*
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* no_color_video --
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* Return attributes that cannot be combined with color.
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*/
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attr_t
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no_color_video(void)
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{
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return(_cursesi_screen->nca);
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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( /*ARGSUSED*/ WINDOW *win, attr_t attr)
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{
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short pair;
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if ((curscr->wattr & __COLOR) == (attr & __COLOR))
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return;
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pair = PAIR_NUMBER((u_int32_t)attr);
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|
#ifdef DEBUG
|
|
__CTRACE("__set_color: %d, %d, %d\n", pair,
|
|
_cursesi_screen->colour_pairs[pair].fore,
|
|
_cursesi_screen->colour_pairs[pair].back);
|
|
#endif
|
|
switch (_cursesi_screen->color_type) {
|
|
/* Set ANSI forground and background colours */
|
|
case COLOR_ANSI:
|
|
if (_cursesi_screen->colour_pairs[pair].fore < 0 ||
|
|
_cursesi_screen->colour_pairs[pair].back < 0)
|
|
__unset_color(curscr);
|
|
if (_cursesi_screen->colour_pairs[pair].fore >= 0)
|
|
tputs(__parse_cap(_cursesi_screen->tc_AF,
|
|
_cursesi_screen->colour_pairs[pair].fore),
|
|
0, __cputchar);
|
|
if (_cursesi_screen->colour_pairs[pair].back >= 0)
|
|
tputs(__parse_cap(_cursesi_screen->tc_AB,
|
|
_cursesi_screen->colour_pairs[pair].back),
|
|
0, __cputchar);
|
|
break;
|
|
case COLOR_HP:
|
|
/* XXX: need to support HP style */
|
|
break;
|
|
case COLOR_TEK:
|
|
/* XXX: need to support Tek style */
|
|
break;
|
|
case COLOR_OTHER:
|
|
if (_cursesi_screen->colour_pairs[pair].fore < 0 ||
|
|
_cursesi_screen->colour_pairs[pair].back < 0)
|
|
__unset_color(curscr);
|
|
if (_cursesi_screen->colour_pairs[pair].fore >= 0)
|
|
tputs(__parse_cap(_cursesi_screen->tc_Sf,
|
|
_cursesi_screen->colour_pairs[pair].fore),
|
|
0, __cputchar);
|
|
if (_cursesi_screen->colour_pairs[pair].back >= 0)
|
|
tputs(__parse_cap(_cursesi_screen->tc_Sb,
|
|
_cursesi_screen->colour_pairs[pair].back),
|
|
0, __cputchar);
|
|
break;
|
|
}
|
|
curscr->wattr &= ~__COLOR;
|
|
curscr->wattr |= attr & __COLOR;
|
|
}
|
|
|
|
/*
|
|
* __unset_color --
|
|
* Clear terminal foreground and background colours.
|
|
*/
|
|
void
|
|
__unset_color(WINDOW *win)
|
|
{
|
|
#ifdef DEBUG
|
|
__CTRACE("__unset_color\n");
|
|
#endif
|
|
switch (_cursesi_screen->color_type) {
|
|
/* Clear ANSI forground and background colours */
|
|
case COLOR_ANSI:
|
|
if (__tc_op != NULL) {
|
|
tputs(__tc_op, 0, __cputchar);
|
|
win->wattr &= __mask_op;
|
|
}
|
|
break;
|
|
case COLOR_HP:
|
|
/* XXX: need to support HP style */
|
|
break;
|
|
case COLOR_TEK:
|
|
/* XXX: need to support Tek style */
|
|
break;
|
|
case COLOR_OTHER:
|
|
if (__tc_op != NULL) {
|
|
tputs(__tc_op, 0, __cputchar);
|
|
win->wattr &= __mask_op;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* __restore_colors --
|
|
* Redo color definitions after restarting 'curses' mode.
|
|
*/
|
|
void
|
|
__restore_colors(void)
|
|
{
|
|
if (__tc_cc != 0)
|
|
switch (_cursesi_screen->color_type) {
|
|
case COLOR_HP:
|
|
/* XXX: need to re-initialise HP style (Ip) */
|
|
break;
|
|
case COLOR_TEK:
|
|
/* XXX: need to re-initialise Tek style (Ic) */
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* __change_pair --
|
|
* Mark dirty all positions using pair.
|
|
*/
|
|
void
|
|
__change_pair(short pair)
|
|
{
|
|
struct __winlist *wlp;
|
|
WINDOW *win;
|
|
int y, x;
|
|
__LINE *lp;
|
|
uint32_t cl = COLOR_PAIR(pair);
|
|
|
|
|
|
for (wlp = _cursesi_screen->winlistp; wlp != NULL; wlp = wlp->nextp) {
|
|
#ifdef DEBUG
|
|
__CTRACE("__change_pair: win = %p\n", wlp->winp);
|
|
#endif
|
|
win = wlp->winp;
|
|
if (win == __virtscr)
|
|
continue;
|
|
else if (win == curscr) {
|
|
/* Reset colour attribute on curscr */
|
|
#ifdef DEBUG
|
|
__CTRACE("__change_pair: win == curscr\n");
|
|
#endif
|
|
for (y = 0; y < curscr->maxy; y++) {
|
|
lp = curscr->lines[y];
|
|
for (x = 0; x < curscr->maxx; x++) {
|
|
if ((lp->line[x].attr & __COLOR) == cl)
|
|
lp->line[x].attr &= ~__COLOR;
|
|
}
|
|
}
|
|
} else {
|
|
/* Mark dirty those positions with colour pair "pair" */
|
|
for (y = 0; y < win->maxy; y++) {
|
|
lp = curscr->lines[y];
|
|
for (x = 0; x < win->maxx; x++)
|
|
if ((lp->line[x].attr &
|
|
__COLOR) == cl) {
|
|
if (!(lp->flags & __ISDIRTY))
|
|
lp->flags |= __ISDIRTY;
|
|
/*
|
|
* firstchp/lastchp are shared
|
|
* between parent window and
|
|
* sub-window.
|
|
*/
|
|
if (*lp->firstchp > x)
|
|
*lp->firstchp = x;
|
|
if (*lp->lastchp < x)
|
|
*lp->lastchp = x;
|
|
}
|
|
#ifdef DEBUG
|
|
if ((win->lines[y]->flags & __ISDIRTY))
|
|
__CTRACE("__change_pair: first = %d, last = %d\n", *win->lines[y]->firstchp, *win->lines[y]->lastchp);
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|