X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=ncurses%2Flib_color.c;fp=ncurses%2Flib_color.c;h=0000000000000000000000000000000000000000;hb=0eb88fc5281804773e2a0c7a488a4452463535ce;hp=cf86420d53db232c197b3dbf83a0e380f52c84b3;hpb=661078ddbde3ce0f3b06e95642fbb9b5fef7dca1;p=ncurses.git diff --git a/ncurses/lib_color.c b/ncurses/lib_color.c deleted file mode 100644 index cf86420d..00000000 --- a/ncurses/lib_color.c +++ /dev/null @@ -1,408 +0,0 @@ -/**************************************************************************** - * Copyright (c) 1998 Free Software Foundation, Inc. * - * * - * Permission is hereby granted, free of charge, to any person obtaining a * - * copy of this software and associated documentation files (the * - * "Software"), to deal in the Software without restriction, including * - * without limitation the rights to use, copy, modify, merge, publish, * - * distribute, distribute with modifications, sublicense, and/or sell * - * copies of the Software, and to permit persons to whom the Software is * - * furnished to do so, subject to the following conditions: * - * * - * The above copyright notice and this permission notice shall be included * - * in all copies or substantial portions of the Software. * - * * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * - * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * - * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * - * * - * Except as contained in this notice, the name(s) of the above copyright * - * holders shall not be used in advertising or otherwise to promote the * - * sale, use or other dealings in this Software without prior written * - * authorization. * - ****************************************************************************/ - -/**************************************************************************** - * Author: Zeyd M. Ben-Halim 1992,1995 * - * and: Eric S. Raymond * - ****************************************************************************/ - -/* lib_color.c - * - * Handles color emulation of SYS V curses - * - */ - -#include - -#include - -MODULE_ID("$Id: lib_color.c,v 1.24 1998/02/11 12:13:58 tom Exp $") - -/* - * Only 8 ANSI colors are defined; the ISO 6429 control sequences work only - * for 8 values (0-7). - */ -#define MAX_ANSI_COLOR 8 - -/* - * These should be screen structure members. They need to be globals for - * hystorical reasons. So we assign them in start_color() and also in - * set_term()'s screen-switching logic. - */ -int COLOR_PAIRS; -int COLORS; - -/* - * Given a RGB range of 0..1000, we'll normally set the individual values - * to about 2/3 of the maximum, leaving full-range for bold/bright colors. - */ -#define RGB_ON 680 -#define RGB_OFF 0 - -static const color_t cga_palette[] = -{ - /* R G B */ - {RGB_OFF, RGB_OFF, RGB_OFF}, /* COLOR_BLACK */ - {RGB_ON, RGB_OFF, RGB_OFF}, /* COLOR_RED */ - {RGB_OFF, RGB_ON, RGB_OFF}, /* COLOR_GREEN */ - {RGB_ON, RGB_ON, RGB_OFF}, /* COLOR_YELLOW */ - {RGB_OFF, RGB_OFF, RGB_ON}, /* COLOR_BLUE */ - {RGB_ON, RGB_OFF, RGB_ON}, /* COLOR_MAGENTA */ - {RGB_OFF, RGB_ON, RGB_ON}, /* COLOR_CYAN */ - {RGB_ON, RGB_ON, RGB_ON}, /* COLOR_WHITE */ -}; -static const color_t hls_palette[] = -{ - /* H L S */ - {0, 0, 0}, /* COLOR_BLACK */ - {120, 50, 100}, /* COLOR_RED */ - {240, 50, 100}, /* COLOR_GREEN */ - {180, 50, 100}, /* COLOR_YELLOW */ - {330, 50, 100}, /* COLOR_BLUE */ - {60, 50, 100}, /* COLOR_MAGENTA */ - {300, 50, 100}, /* COLOR_CYAN */ - {0, 50, 100}, /* COLOR_WHITE */ -}; - -int start_color(void) -{ - T((T_CALLED("start_color()"))); - -#ifdef orig_pair - if (orig_pair != NULL) - { - TPUTS_TRACE("orig_pair"); - putp(orig_pair); - } -#endif /* orig_pair */ -#ifdef orig_colors - if (orig_colors != NULL) - { - TPUTS_TRACE("orig_colors"); - putp(orig_colors); - } -#endif /* orig_colors */ -#if defined(orig_pair) && defined(orig_colors) - if (!orig_pair && !orig_colors) - returnCode(ERR); -#endif /* defined(orig_pair) && defined(orig_colors) */ - if (max_pairs != -1) - COLOR_PAIRS = SP->_pair_count = max_pairs; - else - returnCode(ERR); - SP->_color_pairs = typeCalloc(unsigned short, max_pairs); - SP->_color_pairs[0] = PAIR_OF(COLOR_WHITE, COLOR_BLACK); - if (max_colors != -1) - COLORS = SP->_color_count = max_colors; - else - returnCode(ERR); - SP->_coloron = 1; - - SP->_color_table = malloc(sizeof(color_t) * COLORS); -#ifdef hue_lightness_saturation - if (hue_lightness_saturation) - memcpy(SP->_color_table, hls_palette, sizeof(color_t) * COLORS); - else -#endif /* hue_lightness_saturation */ - memcpy(SP->_color_table, cga_palette, sizeof(color_t) * COLORS); - - if (orig_colors) - { - TPUTS_TRACE("orig_colors"); - putp(orig_colors); - } - - T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS)); - - returnCode(OK); -} - -#ifdef hue_lightness_saturation -/* This function was originally written by Daniel Weaver */ -static void rgb2hls(short r, short g, short b, short *h, short *l, short *s) -/* convert RGB to HLS system */ -{ - short min, max, t; - - if ((min = g < r ? g : r) > b) min = b; - if ((max = g > r ? g : r) < b) max = b; - - /* calculate lightness */ - *l = (min + max) / 20; - - if (min == max) /* black, white and all shades of gray */ - { - *h = 0; - *s = 0; - return; - } - - /* calculate saturation */ - if (*l < 50) - *s = ((max - min) * 100) / (max + min); - else *s = ((max - min) * 100) / (2000 - max - min); - - /* calculate hue */ - if (r == max) - t = 120 + ((g - b) * 60) / (max - min); - else - if (g == max) - t = 240 + ((b - r) * 60) / (max - min); - else - t = 360 + ((r - g) * 60) / (max - min); - - *h = t % 360; -} -#endif /* hue_lightness_saturation */ - -/* - * Extension (1997/1/18) - Allow negative f/b values to set default color - * values. - */ -int init_pair(short pair, short f, short b) -{ - T((T_CALLED("init_pair(%d,%d,%d)"), pair, f, b)); - - if ((pair < 1) || (pair >= COLOR_PAIRS)) - returnCode(ERR); - if (SP->_default_color) - { - if (f < 0) - f = C_MASK; - if (b < 0) - b = C_MASK; - if (f >= COLORS && f != C_MASK) - returnCode(ERR); - if (b >= COLORS && b != C_MASK) - returnCode(ERR); - } - else - if ((f < 0) || (f >= COLORS) - || (b < 0) || (b >= COLORS)) - returnCode(ERR); - - /* - * FIXME: when a pair's content is changed, replace its colors - * (if pair was initialized before a screen update is performed - * replacing original pair colors with the new ones) - */ - - SP->_color_pairs[pair] = PAIR_OF(f,b); - - if (initialize_pair) - { - const color_t *tp = hue_lightness_saturation ? hls_palette : cga_palette; - - T(("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)", - pair, - tp[f].red, tp[f].green, tp[f].blue, - tp[b].red, tp[b].green, tp[b].blue)); - - if (initialize_pair) - { - TPUTS_TRACE("initialize_pair"); - putp(tparm(initialize_pair, - pair, - tp[f].red, tp[f].green, tp[f].blue, - tp[b].red, tp[b].green, tp[b].blue)); - } - } - - returnCode(OK); -} - -int init_color(short color, short r, short g, short b) -{ - T((T_CALLED("init_color(%d,%d,%d,%d)"), color, r, g, b)); -#ifdef initialize_color - if (initialize_color == NULL) - returnCode(ERR); -#endif /* initialize_color */ - - if (color < 0 || color >= COLORS) - returnCode(ERR); - if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000) - returnCode(ERR); - -#ifdef hue_lightness_saturation - if (hue_lightness_saturation) - rgb2hls(r, g, b, - &SP->_color_table[color].red, - &SP->_color_table[color].green, - &SP->_color_table[color].blue); - else -#endif /* hue_lightness_saturation */ - { - SP->_color_table[color].red = r; - SP->_color_table[color].green = g; - SP->_color_table[color].blue = b; - } - -#ifdef initialize_color - if (initialize_color) - { - TPUTS_TRACE("initialize_color"); - putp(tparm(initialize_color, color, r, g, b)); - } -#endif /* initialize_color */ - returnCode(OK); -} - -bool can_change_color(void) -{ - T((T_CALLED("can_change_color()"))); - returnCode ((can_change != 0) ? TRUE : FALSE); -} - -bool has_colors(void) -{ - T((T_CALLED("has_colors()"))); - returnCode (((orig_pair != NULL || orig_colors != NULL) - && (max_colors != -1) && (max_pairs != -1) - && (((set_foreground != NULL) - && (set_background != NULL)) - || ((set_a_foreground != NULL) - && (set_a_background != NULL)) - || set_color_pair)) ? TRUE : FALSE); -} - -int color_content(short color, short *r, short *g, short *b) -{ - T((T_CALLED("color_content(%d,%p,%p,%p)"), color, r, g, b)); - if (color < 0 || color > COLORS) - returnCode(ERR); - - if (r) *r = SP->_color_table[color].red; - if (g) *g = SP->_color_table[color].green; - if (b) *b = SP->_color_table[color].blue; - returnCode(OK); -} - -int pair_content(short pair, short *f, short *b) -{ - T((T_CALLED("pair_content(%d,%p,%p)"), pair, f, b)); - - if ((pair < 0) || (pair > COLOR_PAIRS)) - returnCode(ERR); - if (f) *f = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK); - if (b) *b = (SP->_color_pairs[pair] & C_MASK); - - returnCode(OK); -} - -/* - * SVr4 curses is known to interchange color codes (1,4) and (3,6), possibly - * to maintain compatibility with a pre-ANSI scheme. The same scheme is - * also used in the FreeBSD syscons. - */ -static int toggled_colors(int c) -{ - if (c < 16) { - static const int table[] = - { 0, 4, 2, 6, 1, 5, 3, 7, - 8, 12, 10, 14, 9, 13, 11, 15}; - c = table[c]; - } - return c; -} - -void _nc_do_color(int pair, bool reverse, int (*outc)(int)) -{ - short fg, bg; - - if (reverse) - pair = -pair; - - if (pair == 0) - { - if (orig_pair) - { - TPUTS_TRACE("orig_pair"); - tputs(orig_pair, 1, outc); - } - } - else - { - if (set_color_pair) - { - TPUTS_TRACE("set_color_pair"); - tputs(tparm(set_color_pair, pair), 1, outc); - } - else - { - pair_content(pair, &fg, &bg); - if (reverse) { - short xx = fg; - fg = bg; - bg = xx; - } - - T(("setting colors: pair = %d, fg = %d, bg = %d", pair, fg, bg)); - - if (fg == C_MASK || bg == C_MASK) - { - if (orig_pair) - { - TPUTS_TRACE("orig_pair"); - tputs(orig_pair, 1, outc); - } - else - { - TPUTS_TRACE("orig_colors"); - tputs(orig_colors, 1, outc); - } - } - if (fg != C_MASK) - { - if (set_a_foreground && fg <= MAX_ANSI_COLOR) - { - TPUTS_TRACE("set_a_foreground"); - tputs(tparm(set_a_foreground, fg), 1, outc); - } - else - { - TPUTS_TRACE("set_foreground"); - tputs(tparm(set_foreground, toggled_colors(fg)), 1, outc); - } - } - if (bg != C_MASK) - { - if (set_a_background && bg <= MAX_ANSI_COLOR) - { - TPUTS_TRACE("set_a_background"); - tputs(tparm(set_a_background, bg), 1, outc); - } - else - { - TPUTS_TRACE("set_background"); - tputs(tparm(set_background, toggled_colors(bg)), 1, outc); - } - } - } - } -}