/* $OpenBSD: lib_color.c,v 1.12 2023/10/17 09:52:08 nicm Exp $ */ /**************************************************************************** * Copyright 2018-2021,2022 Thomas E. Dickey * * Copyright 1998-2016,2017 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 * * and: Thomas E. Dickey 1996-on * * and: Juergen Pfeifer 2009 * ****************************************************************************/ /* lib_color.c * * Handles color emulation of SYS V curses */ #define NEW_PAIR_INTERNAL 1 #include #include #include #ifndef CUR #define CUR SP_TERMTYPE #endif MODULE_ID("$Id: lib_color.c,v 1.12 2023/10/17 09:52:08 nicm Exp $") #ifdef USE_TERM_DRIVER #define CanChange InfoOf(SP_PARM).canchange #define DefaultPalette InfoOf(SP_PARM).defaultPalette #define HasColor InfoOf(SP_PARM).hascolor #define InitColor InfoOf(SP_PARM).initcolor #define MaxColors InfoOf(SP_PARM).maxcolors #define MaxPairs InfoOf(SP_PARM).maxpairs #define UseHlsPalette (DefaultPalette == _nc_hls_palette) #else #define CanChange can_change #define DefaultPalette (hue_lightness_saturation ? hls_palette : cga_palette) #define HasColor has_color #define InitColor initialize_color #define MaxColors max_colors #define MaxPairs max_pairs #define UseHlsPalette (hue_lightness_saturation) #endif #ifndef USE_TERM_DRIVER /* * These should be screen structure members. They need to be globals for * historical reasons. So we assign them in start_color() and also in * set_term()'s screen-switching logic. */ #if USE_REENTRANT NCURSES_EXPORT(int) NCURSES_PUBLIC_VAR(COLOR_PAIRS) (void) { return SP ? SP->_pair_count : -1; } NCURSES_EXPORT(int) NCURSES_PUBLIC_VAR(COLORS) (void) { return SP ? SP->_color_count : -1; } #else NCURSES_EXPORT_VAR(int) COLOR_PAIRS = 0; NCURSES_EXPORT_VAR(int) COLORS = 0; #endif #endif /* !USE_TERM_DRIVER */ #define DATA(r,g,b) {r,g,b, 0,0,0, 0} #define MAX_PALETTE 8 #define OkColorHi(n) (((n) < COLORS) && ((n) < maxcolors)) #define InPalette(n) ((n) >= 0 && (n) < MAX_PALETTE) /* * 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 /* *INDENT-OFF* */ static const color_t cga_palette[] = { /* R G B */ DATA(RGB_OFF, RGB_OFF, RGB_OFF), /* COLOR_BLACK */ DATA(RGB_ON, RGB_OFF, RGB_OFF), /* COLOR_RED */ DATA(RGB_OFF, RGB_ON, RGB_OFF), /* COLOR_GREEN */ DATA(RGB_ON, RGB_ON, RGB_OFF), /* COLOR_YELLOW */ DATA(RGB_OFF, RGB_OFF, RGB_ON), /* COLOR_BLUE */ DATA(RGB_ON, RGB_OFF, RGB_ON), /* COLOR_MAGENTA */ DATA(RGB_OFF, RGB_ON, RGB_ON), /* COLOR_CYAN */ DATA(RGB_ON, RGB_ON, RGB_ON), /* COLOR_WHITE */ }; static const color_t hls_palette[] = { /* H L S */ DATA( 0, 0, 0), /* COLOR_BLACK */ DATA( 120, 50, 100), /* COLOR_RED */ DATA( 240, 50, 100), /* COLOR_GREEN */ DATA( 180, 50, 100), /* COLOR_YELLOW */ DATA( 330, 50, 100), /* COLOR_BLUE */ DATA( 60, 50, 100), /* COLOR_MAGENTA */ DATA( 300, 50, 100), /* COLOR_CYAN */ DATA( 0, 50, 100), /* COLOR_WHITE */ }; #ifdef USE_TERM_DRIVER NCURSES_EXPORT_VAR(const color_t*) _nc_cga_palette = cga_palette; NCURSES_EXPORT_VAR(const color_t*) _nc_hls_palette = hls_palette; #endif /* *INDENT-ON* */ #if NCURSES_EXT_FUNCS /* * These are called from _nc_do_color(), which in turn is called from * vidattr - so we have to assume that sp may be null. */ static int default_fg(NCURSES_SP_DCL0) { return (SP_PARM != 0) ? SP_PARM->_default_fg : COLOR_WHITE; } static int default_bg(NCURSES_SP_DCL0) { return SP_PARM != 0 ? SP_PARM->_default_bg : COLOR_BLACK; } #else #define default_fg(sp) COLOR_WHITE #define default_bg(sp) COLOR_BLACK #endif #ifndef USE_TERM_DRIVER /* * 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; } #endif static void set_background_color(NCURSES_SP_DCLx int bg, NCURSES_SP_OUTC outc) { #ifdef USE_TERM_DRIVER CallDriver_3(SP_PARM, td_color, FALSE, bg, outc); #else if (set_a_background) { TPUTS_TRACE("set_a_background"); NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx TIPARM_1(set_a_background, bg), 1, outc); } else { TPUTS_TRACE("set_background"); NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx TIPARM_1(set_background, toggled_colors(bg)), 1, outc); } #endif } static void set_foreground_color(NCURSES_SP_DCLx int fg, NCURSES_SP_OUTC outc) { #ifdef USE_TERM_DRIVER CallDriver_3(SP_PARM, td_color, TRUE, fg, outc); #else if (set_a_foreground) { TPUTS_TRACE("set_a_foreground"); NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx TIPARM_1(set_a_foreground, fg), 1, outc); } else { TPUTS_TRACE("set_foreground"); NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx TIPARM_1(set_foreground, toggled_colors(fg)), 1, outc); } #endif } static void init_color_table(NCURSES_SP_DCL0) { const color_t *tp = DefaultPalette; int n; assert(tp != 0); for (n = 0; n < COLORS; n++) { if (InPalette(n)) { SP_PARM->_color_table[n] = tp[n]; } else { SP_PARM->_color_table[n] = tp[n % MAX_PALETTE]; if (UseHlsPalette) { SP_PARM->_color_table[n].green = 100; } else { if (SP_PARM->_color_table[n].red) SP_PARM->_color_table[n].red = 1000; if (SP_PARM->_color_table[n].green) SP_PARM->_color_table[n].green = 1000; if (SP_PARM->_color_table[n].blue) SP_PARM->_color_table[n].blue = 1000; } } } } static bool init_direct_colors(NCURSES_SP_DCL0) { static NCURSES_CONST char name[] = "RGB"; rgb_bits_t *result = &(SP_PARM->_direct_color); result->value = 0; if (COLORS >= 8) { int n; const char *s; int width; /* find the number of bits needed for the maximum color value */ for (width = 0; (1 << width) - 1 < (COLORS - 1); ++width) { ; } if (tigetflag(name) > 0) { n = (width + 2) / 3; result->bits.red = UChar(n); result->bits.green = UChar(n); result->bits.blue = UChar(width - (2 * n)); } else if ((n = tigetnum(name)) > 0) { result->bits.red = UChar(n); result->bits.green = UChar(n); result->bits.blue = UChar(n); } else if ((s = tigetstr(name)) != 0 && VALID_STRING(s)) { int red = n; int green = n; int blue = width - (2 * n); switch (sscanf(s, "%d/%d/%d", &red, &green, &blue)) { default: blue = width - (2 * n); /* FALLTHRU */ case 1: green = n; /* FALLTHRU */ case 2: red = n; /* FALLTHRU */ case 3: /* okay */ break; } result->bits.red = UChar(red); result->bits.green = UChar(green); result->bits.blue = UChar(blue); } } return (result->value != 0); } /* * Reset the color pair, e.g., to whatever color pair 0 is. */ static bool reset_color_pair(NCURSES_SP_DCL0) { #ifdef USE_TERM_DRIVER return CallDriver(SP_PARM, td_rescol); #else bool result = FALSE; (void) SP_PARM; if (orig_pair != 0) { (void) NCURSES_PUTP2("orig_pair", orig_pair); result = TRUE; } return result; #endif } /* * Reset color pairs and definitions. Actually we do both more to accommodate * badly-written terminal descriptions than for the relatively rare case where * someone has changed the color definitions. */ NCURSES_EXPORT(bool) NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_DCL0) { int result = FALSE; T((T_CALLED("_nc_reset_colors(%p)"), (void *) SP_PARM)); if (SP_PARM->_color_defs > 0) SP_PARM->_color_defs = -(SP_PARM->_color_defs); if (reset_color_pair(NCURSES_SP_ARG)) result = TRUE; #ifdef USE_TERM_DRIVER result = CallDriver(SP_PARM, td_rescolors); #else if (orig_colors != 0) { NCURSES_PUTP2("orig_colors", orig_colors); result = TRUE; } #endif returnBool(result); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(bool) _nc_reset_colors(void) { return NCURSES_SP_NAME(_nc_reset_colors) (CURRENT_SCREEN); } #endif NCURSES_EXPORT(int) NCURSES_SP_NAME(start_color) (NCURSES_SP_DCL0) { int result = ERR; T((T_CALLED("start_color(%p)"), (void *) SP_PARM)); if (SP_PARM == 0) { result = ERR; } else if (SP_PARM->_coloron) { result = OK; } else { int maxpairs = MaxPairs; int maxcolors = MaxColors; if (reset_color_pair(NCURSES_SP_ARG) != TRUE) { set_foreground_color(NCURSES_SP_ARGx default_fg(NCURSES_SP_ARG), NCURSES_SP_NAME(_nc_outch)); set_background_color(NCURSES_SP_ARGx default_bg(NCURSES_SP_ARG), NCURSES_SP_NAME(_nc_outch)); } #if !NCURSES_EXT_COLORS /* * Without ext-colors, we cannot represent more than 256 color pairs. */ if (maxpairs > 256) maxpairs = 256; #endif if (maxpairs > 0 && maxcolors > 0) { SP_PARM->_pair_limit = maxpairs; #if NCURSES_EXT_FUNCS /* * If using default colors, allocate extra space in table to * allow for default-color as a component of a color-pair. */ SP_PARM->_pair_limit += (1 + (2 * maxcolors)); #if !NCURSES_EXT_COLORS SP_PARM->_pair_limit = limit_PAIRS(SP_PARM->_pair_limit); #endif #endif /* NCURSES_EXT_FUNCS */ SP_PARM->_pair_count = maxpairs; SP_PARM->_color_count = maxcolors; #if !USE_REENTRANT COLOR_PAIRS = maxpairs; COLORS = maxcolors; #endif ReservePairs(SP_PARM, 16); if (SP_PARM->_color_pairs != 0) { if (init_direct_colors(NCURSES_SP_ARG)) { result = OK; } else { TYPE_CALLOC(color_t, maxcolors, SP_PARM->_color_table); if (SP_PARM->_color_table != 0) { MakeColorPair(SP_PARM->_color_pairs[0], default_fg(NCURSES_SP_ARG), default_bg(NCURSES_SP_ARG)); init_color_table(NCURSES_SP_ARG); result = OK; } } if (result == OK) { T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS)); SP_PARM->_coloron = 1; } else if (SP_PARM->_color_pairs != 0) { FreeAndNull(SP_PARM->_color_pairs); } } } else { result = OK; } } returnCode(result); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) start_color(void) { return NCURSES_SP_NAME(start_color) (CURRENT_SCREEN); } #endif /* This function was originally written by Daniel Weaver */ static void rgb2hls(int r, int g, int b, int *h, int *l, int *s) /* convert RGB to HLS system */ { int 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); } /* * Change all cells which use(d) a given color pair to force a repaint. */ NCURSES_EXPORT(void) _nc_change_pair(SCREEN *sp, int pair) { int y, x; if (CurScreen(sp)->_clear) return; #if NO_LEAKS if (_nc_globals.leak_checking) return; #endif for (y = 0; y <= CurScreen(sp)->_maxy; y++) { struct ldat *ptr = &(CurScreen(sp)->_line[y]); bool changed = FALSE; for (x = 0; x <= CurScreen(sp)->_maxx; x++) { if (GetPair(ptr->text[x]) == pair) { /* Set the old cell to zero to ensure it will be updated on the next doupdate() */ SetChar(ptr->text[x], 0, 0); CHANGED_CELL(ptr, x); changed = TRUE; } } if (changed) NCURSES_SP_NAME(_nc_make_oldhash) (NCURSES_SP_ARGx y); } } NCURSES_EXPORT(void) _nc_reserve_pairs(SCREEN *sp, int want) { int have = sp->_pair_alloc; if (have == 0) have = 1; while (have <= want) have *= 2; if (have > sp->_pair_limit) have = sp->_pair_limit; if (sp->_color_pairs == 0) { TYPE_CALLOC(colorpair_t, have, sp->_color_pairs); } else if (have > sp->_pair_alloc) { #if NCURSES_EXT_COLORS colorpair_t *next; if ((next = typeCalloc(colorpair_t, have)) == 0) _nc_err_abort(MSG_NO_MEMORY); memcpy(next, sp->_color_pairs, (size_t) sp->_pair_alloc * sizeof(*next)); _nc_copy_pairs(sp, next, sp->_color_pairs, sp->_pair_alloc); free(sp->_color_pairs); sp->_color_pairs = next; #else TYPE_REALLOC(colorpair_t, have, sp->_color_pairs); if (sp->_color_pairs != 0) { memset(sp->_color_pairs + sp->_pair_alloc, 0, sizeof(colorpair_t) * (size_t) (have - sp->_pair_alloc)); } #endif } if (sp->_color_pairs != 0) { sp->_pair_alloc = have; } } /* * Extension (1997/1/18) - Allow negative f/b values to set default color * values. */ NCURSES_EXPORT(int) _nc_init_pair(SCREEN *sp, int pair, int f, int b) { static colorpair_t null_pair; colorpair_t result = null_pair; colorpair_t previous; int maxcolors; T((T_CALLED("init_pair(%p,%d,%d,%d)"), (void *) sp, pair, f, b)); if (!ValidPair(sp, pair)) returnCode(ERR); maxcolors = MaxColors; ReservePairs(sp, pair); previous = sp->_color_pairs[pair]; #if NCURSES_EXT_FUNCS if (sp->_default_color || sp->_assumed_color) { bool isDefault = FALSE; bool wasDefault = FALSE; int default_pairs = sp->_default_pairs; /* * Map caller's color number, e.g., -1, 0, 1, .., 7, etc., into * internal unsigned values which we will store in the _color_pairs[] * table. */ if (isDefaultColor(f)) { f = COLOR_DEFAULT; isDefault = TRUE; } else if (!OkColorHi(f)) { returnCode(ERR); } if (isDefaultColor(b)) { b = COLOR_DEFAULT; isDefault = TRUE; } else if (!OkColorHi(b)) { returnCode(ERR); } /* * Check if the table entry that we are going to init/update used * default colors. */ if (isDefaultColor(FORE_OF(previous)) || isDefaultColor(BACK_OF(previous))) wasDefault = TRUE; /* * Keep track of the number of entries in the color pair table which * used a default color. */ if (isDefault && !wasDefault) { ++default_pairs; } else if (wasDefault && !isDefault) { --default_pairs; } /* * As an extension, ncurses allows the pair number to exceed the * terminal's color_pairs value for pairs using a default color. * * Note that updating a pair which used a default color with one * that does not will decrement the count - and possibly interfere * with sequentially adding new pairs. */ if (pair > (sp->_pair_count + default_pairs)) { returnCode(ERR); } sp->_default_pairs = default_pairs; } else #endif { if ((f < 0) || !OkColorHi(f) || (b < 0) || !OkColorHi(b) || (pair < 1)) { returnCode(ERR); } } /* * 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). */ MakeColorPair(result, f, b); if ((FORE_OF(previous) != 0 || BACK_OF(previous) != 0) && !isSamePair(previous, result)) { _nc_change_pair(sp, pair); } _nc_reset_color_pair(sp, pair, &result); sp->_color_pairs[pair] = result; _nc_set_color_pair(sp, pair, cpINIT); if (GET_SCREEN_PAIR(sp) == pair) SET_SCREEN_PAIR(sp, (int) (~0)); /* force attribute update */ #ifdef USE_TERM_DRIVER CallDriver_3(sp, td_initpair, pair, f, b); #else if (initialize_pair && InPalette(f) && InPalette(b)) { const color_t *tp = DefaultPalette; TR(TRACE_ATTRS, ("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)", (int) pair, (int) tp[f].red, (int) tp[f].green, (int) tp[f].blue, (int) tp[b].red, (int) tp[b].green, (int) tp[b].blue)); NCURSES_PUTP2("initialize_pair", TIPARM_7(initialize_pair, pair, (int) tp[f].red, (int) tp[f].green, (int) tp[f].blue, (int) tp[b].red, (int) tp[b].green, (int) tp[b].blue)); } #endif returnCode(OK); } NCURSES_EXPORT(int) NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx NCURSES_PAIRS_T pair, NCURSES_COLOR_T f, NCURSES_COLOR_T b) { return _nc_init_pair(SP_PARM, pair, f, b); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) init_pair(NCURSES_COLOR_T pair, NCURSES_COLOR_T f, NCURSES_COLOR_T b) { return NCURSES_SP_NAME(init_pair) (CURRENT_SCREEN, pair, f, b); } #endif #define okRGB(n) ((n) >= 0 && (n) <= 1000) NCURSES_EXPORT(int) _nc_init_color(SCREEN *sp, int color, int r, int g, int b) { int result = ERR; int maxcolors; T((T_CALLED("init_color(%p,%d,%d,%d,%d)"), (void *) sp, color, r, g, b)); if (sp == 0 || sp->_direct_color.value) returnCode(result); maxcolors = MaxColors; if (InitColor && sp->_coloron && (color >= 0 && OkColorHi(color)) && (okRGB(r) && okRGB(g) && okRGB(b))) { sp->_color_table[color].init = 1; sp->_color_table[color].r = r; sp->_color_table[color].g = g; sp->_color_table[color].b = b; if (UseHlsPalette) { rgb2hls(r, g, b, &sp->_color_table[color].red, &sp->_color_table[color].green, &sp->_color_table[color].blue); } else { sp->_color_table[color].red = r; sp->_color_table[color].green = g; sp->_color_table[color].blue = b; } #ifdef USE_TERM_DRIVER CallDriver_4(sp, td_initcolor, color, r, g, b); #else NCURSES_PUTP2("initialize_color", TIPARM_4(initialize_color, color, r, g, b)); #endif sp->_color_defs = max(color + 1, sp->_color_defs); result = OK; } returnCode(result); } NCURSES_EXPORT(int) NCURSES_SP_NAME(init_color) (NCURSES_SP_DCLx NCURSES_COLOR_T color, NCURSES_COLOR_T r, NCURSES_COLOR_T g, NCURSES_COLOR_T b) { return _nc_init_color(SP_PARM, color, r, g, b); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) init_color(NCURSES_COLOR_T color, NCURSES_COLOR_T r, NCURSES_COLOR_T g, NCURSES_COLOR_T b) { return NCURSES_SP_NAME(init_color) (CURRENT_SCREEN, color, r, g, b); } #endif NCURSES_EXPORT(bool) NCURSES_SP_NAME(can_change_color) (NCURSES_SP_DCL) { int result = FALSE; T((T_CALLED("can_change_color(%p)"), (void *) SP_PARM)); if (HasTerminal(SP_PARM) && (CanChange != 0)) { result = TRUE; } returnCode(result); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(bool) can_change_color(void) { return NCURSES_SP_NAME(can_change_color) (CURRENT_SCREEN); } #endif NCURSES_EXPORT(bool) NCURSES_SP_NAME(has_colors) (NCURSES_SP_DCL0) { int code = FALSE; (void) SP_PARM; T((T_CALLED("has_colors(%p)"), (void *) SP_PARM)); if (HasTerminal(SP_PARM)) { #ifdef USE_TERM_DRIVER code = HasColor; #else code = ((VALID_NUMERIC(max_colors) && VALID_NUMERIC(max_pairs) && (((set_foreground != NULL) && (set_background != NULL)) || ((set_a_foreground != NULL) && (set_a_background != NULL)) || set_color_pair)) ? TRUE : FALSE); #endif } returnCode(code); } #if NCURSES_SP_FUNCS NCURSES_EXPORT(bool) has_colors(void) { return NCURSES_SP_NAME(has_colors) (CURRENT_SCREEN); } #endif static int _nc_color_content(SCREEN *sp, int color, int *r, int *g, int *b) { int result = ERR; T((T_CALLED("color_content(%p,%d,%p,%p,%p)"), (void *) sp, color, (void *) r, (void *) g, (void *) b)); if (sp != 0) { int maxcolors = MaxColors; if (color >= 0 && OkColorHi(color) && sp->_coloron) { int c_r, c_g, c_b; if (sp->_direct_color.value) { rgb_bits_t *work = &(sp->_direct_color); #define max_direct_color(name) ((1 << work->bits.name) - 1) #define value_direct_color(max) (1000 * ((color >> bitoff) & max)) / max int max_r = max_direct_color(red); int max_g = max_direct_color(green); int max_b = max_direct_color(blue); int bitoff = 0; c_b = value_direct_color(max_b); bitoff += work->bits.blue; c_g = value_direct_color(max_g); bitoff += work->bits.green; c_r = value_direct_color(max_r); } else { c_r = sp->_color_table[color].red; c_g = sp->_color_table[color].green; c_b = sp->_color_table[color].blue; } if (r) *r = c_r; if (g) *g = c_g; if (b) *b = c_b; TR(TRACE_ATTRS, ("...color_content(%d,%d,%d,%d)", color, c_r, c_g, c_b)); result = OK; } } if (result != OK) { if (r) *r = 0; if (g) *g = 0; if (b) *b = 0; } returnCode(result); } NCURSES_EXPORT(int) NCURSES_SP_NAME(color_content) (NCURSES_SP_DCLx NCURSES_COLOR_T color, NCURSES_COLOR_T *r, NCURSES_COLOR_T *g, NCURSES_COLOR_T *b) { int my_r, my_g, my_b; int rc = _nc_color_content(SP_PARM, color, &my_r, &my_g, &my_b); if (rc == OK) { *r = limit_COLOR(my_r); *g = limit_COLOR(my_g); *b = limit_COLOR(my_b); } return rc; } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) color_content(NCURSES_COLOR_T color, NCURSES_COLOR_T *r, NCURSES_COLOR_T *g, NCURSES_COLOR_T *b) { return NCURSES_SP_NAME(color_content) (CURRENT_SCREEN, color, r, g, b); } #endif NCURSES_EXPORT(int) _nc_pair_content(SCREEN *sp, int pair, int *f, int *b) { int result; T((T_CALLED("pair_content(%p,%d,%p,%p)"), (void *) sp, (int) pair, (void *) f, (void *) b)); if (!ValidPair(sp, pair)) { result = ERR; } else { int fg; int bg; ReservePairs(sp, pair); fg = FORE_OF(sp->_color_pairs[pair]); bg = BACK_OF(sp->_color_pairs[pair]); #if NCURSES_EXT_FUNCS if (isDefaultColor(fg)) fg = -1; if (isDefaultColor(bg)) bg = -1; #endif if (f) *f = fg; if (b) *b = bg; TR(TRACE_ATTRS, ("...pair_content(%p,%d,%d,%d)", (void *) sp, (int) pair, (int) fg, (int) bg)); result = OK; } returnCode(result); } NCURSES_EXPORT(int) NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx NCURSES_PAIRS_T pair, NCURSES_COLOR_T *f, NCURSES_COLOR_T *b) { int my_f, my_b; int rc = _nc_pair_content(SP_PARM, pair, &my_f, &my_b); if (rc == OK) { *f = limit_COLOR(my_f); *b = limit_COLOR(my_b); } return rc; } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) pair_content(NCURSES_COLOR_T pair, NCURSES_COLOR_T *f, NCURSES_COLOR_T *b) { return NCURSES_SP_NAME(pair_content) (CURRENT_SCREEN, pair, f, b); } #endif NCURSES_EXPORT(void) NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_DCLx int old_pair, int pair, int reverse, NCURSES_SP_OUTC outc) { #ifdef USE_TERM_DRIVER CallDriver_4(SP_PARM, td_docolor, old_pair, pair, reverse, outc); #else int fg = COLOR_DEFAULT; int bg = COLOR_DEFAULT; int old_fg = -1; int old_bg = -1; if (!ValidPair(SP_PARM, pair)) { return; } else if (pair != 0) { if (set_color_pair) { TPUTS_TRACE("set_color_pair"); NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx TIPARM_1(set_color_pair, pair), 1, outc); return; } else if (SP_PARM != 0) { if (_nc_pair_content(SP_PARM, pair, &fg, &bg) == ERR) return; } } if (old_pair >= 0 && SP_PARM != 0 && _nc_pair_content(SP_PARM, old_pair, &old_fg, &old_bg) != ERR) { if ((isDefaultColor(fg) && !isDefaultColor(old_fg)) || (isDefaultColor(bg) && !isDefaultColor(old_bg))) { #if NCURSES_EXT_FUNCS /* * A minor optimization - but extension. If "AX" is specified in * the terminal description, treat it as screen's indicator of ECMA * SGR 39 and SGR 49, and assume the two sequences are independent. */ if (SP_PARM->_has_sgr_39_49 && isDefaultColor(old_bg) && !isDefaultColor(old_fg)) { NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx "\033[39m", 1, outc); } else if (SP_PARM->_has_sgr_39_49 && isDefaultColor(old_fg) && !isDefaultColor(old_bg)) { NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx "\033[49m", 1, outc); } else #endif reset_color_pair(NCURSES_SP_ARG); } } else { reset_color_pair(NCURSES_SP_ARG); if (old_pair < 0 && pair <= 0) return; } #if NCURSES_EXT_FUNCS if (isDefaultColor(fg)) fg = default_fg(NCURSES_SP_ARG); if (isDefaultColor(bg)) bg = default_bg(NCURSES_SP_ARG); #endif if (reverse) { int xx = fg; fg = bg; bg = xx; } TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair, fg, bg)); if (!isDefaultColor(fg)) { set_foreground_color(NCURSES_SP_ARGx fg, outc); } if (!isDefaultColor(bg)) { set_background_color(NCURSES_SP_ARGx bg, outc); } #endif } #if NCURSES_SP_FUNCS NCURSES_EXPORT(void) _nc_do_color(int old_pair, int pair, int reverse, NCURSES_OUTC outc) { SetSafeOutcWrapper(outc); NCURSES_SP_NAME(_nc_do_color) (CURRENT_SCREEN, old_pair, pair, reverse, _nc_outc_wrapper); } #endif #if NCURSES_EXT_COLORS NCURSES_EXPORT(int) NCURSES_SP_NAME(init_extended_pair) (NCURSES_SP_DCLx int pair, int f, int b) { return _nc_init_pair(SP_PARM, pair, f, b); } NCURSES_EXPORT(int) NCURSES_SP_NAME(init_extended_color) (NCURSES_SP_DCLx int color, int r, int g, int b) { return _nc_init_color(SP_PARM, color, r, g, b); } NCURSES_EXPORT(int) NCURSES_SP_NAME(extended_color_content) (NCURSES_SP_DCLx int color, int *r, int *g, int *b) { return _nc_color_content(SP_PARM, color, r, g, b); } NCURSES_EXPORT(int) NCURSES_SP_NAME(extended_pair_content) (NCURSES_SP_DCLx int pair, int *f, int *b) { return _nc_pair_content(SP_PARM, pair, f, b); } NCURSES_EXPORT(void) NCURSES_SP_NAME(reset_color_pairs) (NCURSES_SP_DCL0) { if (SP_PARM != 0) { if (SP_PARM->_color_pairs) { _nc_free_ordered_pairs(SP_PARM); free(SP_PARM->_color_pairs); SP_PARM->_color_pairs = 0; SP_PARM->_pair_alloc = 0; ReservePairs(SP_PARM, 16); clearok(CurScreen(SP_PARM), TRUE); touchwin(StdScreen(SP_PARM)); } } } #if NCURSES_SP_FUNCS NCURSES_EXPORT(int) init_extended_pair(int pair, int f, int b) { return NCURSES_SP_NAME(init_extended_pair) (CURRENT_SCREEN, pair, f, b); } NCURSES_EXPORT(int) init_extended_color(int color, int r, int g, int b) { return NCURSES_SP_NAME(init_extended_color) (CURRENT_SCREEN, color, r, g, b); } NCURSES_EXPORT(int) extended_color_content(int color, int *r, int *g, int *b) { return NCURSES_SP_NAME(extended_color_content) (CURRENT_SCREEN, color, r, g, b); } NCURSES_EXPORT(int) extended_pair_content(int pair, int *f, int *b) { return NCURSES_SP_NAME(extended_pair_content) (CURRENT_SCREEN, pair, f, b); } NCURSES_EXPORT(void) reset_color_pairs(void) { NCURSES_SP_NAME(reset_color_pairs) (CURRENT_SCREEN); } #endif /* NCURSES_SP_FUNCS */ #endif /* NCURSES_EXT_COLORS */