| /**************************************************************************** |
| * Copyright (c) 1998-2013,2014 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 <zmbenhal@netcom.com> 1992,1995 * |
| * and: Eric S. Raymond <esr@snark.thyrsus.com> * |
| * and: Thomas E. Dickey 1996-on * |
| * and: Juergen Pfeifer 2009 * |
| ****************************************************************************/ |
| |
| /* lib_color.c |
| * |
| * Handles color emulation of SYS V curses |
| */ |
| |
| #include <curses.priv.h> |
| #include <tic.h> |
| |
| #ifndef CUR |
| #define CUR SP_TERMTYPE |
| #endif |
| |
| MODULE_ID("$Id: lib_color.c,v 1.110 2014/03/08 20:04:44 tom 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 TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts)) |
| |
| #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* */ |
| |
| /* |
| * Ensure that we use color pairs only when colors have been started, and also |
| * that the index is within the limits of the table which we allocated. |
| */ |
| #define ValidPair(pair) \ |
| ((SP_PARM != 0) && (pair >= 0) && (pair < SP_PARM->_pair_limit) && SP_PARM->_coloron) |
| |
| #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 |
| TPARM_1(set_a_background, bg), |
| 1, outc); |
| } else { |
| TPUTS_TRACE("set_background"); |
| NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx |
| TPARM_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 |
| TPARM_1(set_a_foreground, fg), |
| 1, outc); |
| } else { |
| TPUTS_TRACE("set_foreground"); |
| NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx |
| TPARM_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; |
| } |
| } |
| } |
| } |
| |
| /* |
| * 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; |
| int maxpairs = 0, maxcolors = 0; |
| |
| T((T_CALLED("start_color(%p)"), (void *) SP_PARM)); |
| |
| if (SP_PARM == 0) { |
| result = ERR; |
| } else if (SP_PARM->_coloron) { |
| result = OK; |
| } else { |
| maxpairs = MaxPairs; |
| 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)); |
| #endif |
| SP_PARM->_pair_count = maxpairs; |
| SP_PARM->_color_count = maxcolors; |
| #if !USE_REENTRANT |
| COLOR_PAIRS = maxpairs; |
| COLORS = maxcolors; |
| #endif |
| |
| SP_PARM->_color_pairs = TYPE_CALLOC(colorpair_t, SP_PARM->_pair_limit); |
| if (SP_PARM->_color_pairs != 0) { |
| SP_PARM->_color_table = TYPE_CALLOC(color_t, maxcolors); |
| if (SP_PARM->_color_table != 0) { |
| SP_PARM->_color_pairs[0] = PAIR_OF(default_fg(NCURSES_SP_ARG), |
| default_bg(NCURSES_SP_ARG)); |
| init_color_table(NCURSES_SP_ARG); |
| |
| T(("started color: COLORS = %d, COLOR_PAIRS = %d", |
| COLORS, COLOR_PAIRS)); |
| |
| SP_PARM->_coloron = 1; |
| result = OK; |
| } 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 <danw@znyx.com> */ |
| static void |
| rgb2hls(int r, int g, int b, NCURSES_COLOR_T *h, NCURSES_COLOR_T *l, NCURSES_COLOR_T *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 = (NCURSES_COLOR_T) ((min + max) / 20); |
| |
| if (min == max) { /* black, white and all shades of gray */ |
| *h = 0; |
| *s = 0; |
| return; |
| } |
| |
| /* calculate saturation */ |
| if (*l < 50) |
| *s = (NCURSES_COLOR_T) (((max - min) * 100) / (max + min)); |
| else |
| *s = (NCURSES_COLOR_T) (((max - min) * 100) / (2000 - max - min)); |
| |
| /* calculate hue */ |
| if (r == max) |
| t = (NCURSES_COLOR_T) (120 + ((g - b) * 60) / (max - min)); |
| else if (g == max) |
| t = (NCURSES_COLOR_T) (240 + ((b - r) * 60) / (max - min)); |
| else |
| t = (NCURSES_COLOR_T) (360 + ((r - g) * 60) / (max - min)); |
| |
| *h = (NCURSES_COLOR_T) (t % 360); |
| } |
| |
| /* |
| * Extension (1997/1/18) - Allow negative f/b values to set default color |
| * values. |
| */ |
| NCURSES_EXPORT(int) |
| NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx |
| NCURSES_PAIRS_T pair, |
| NCURSES_COLOR_T f, |
| NCURSES_COLOR_T b) |
| { |
| colorpair_t result; |
| colorpair_t previous; |
| int maxcolors; |
| |
| T((T_CALLED("init_pair(%p,%d,%d,%d)"), |
| (void *) SP_PARM, |
| (int) pair, |
| (int) f, |
| (int) b)); |
| |
| if (!ValidPair(pair)) |
| returnCode(ERR); |
| |
| maxcolors = MaxColors; |
| |
| previous = SP_PARM->_color_pairs[pair]; |
| #if NCURSES_EXT_FUNCS |
| if (SP_PARM->_default_color || SP_PARM->_assumed_color) { |
| bool isDefault = FALSE; |
| bool wasDefault = FALSE; |
| int default_pairs = SP_PARM->_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 ((FORE_OF(previous) == COLOR_DEFAULT) |
| || (BACK_OF(previous) == COLOR_DEFAULT)) |
| 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_PARM->_pair_count + default_pairs)) { |
| returnCode(ERR); |
| } |
| SP_PARM->_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). |
| */ |
| result = PAIR_OF(f, b); |
| if (previous != 0 |
| && previous != result) { |
| int y, x; |
| |
| for (y = 0; y <= CurScreen(SP_PARM)->_maxy; y++) { |
| struct ldat *ptr = &(CurScreen(SP_PARM)->_line[y]); |
| bool changed = FALSE; |
| for (x = 0; x <= CurScreen(SP_PARM)->_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); |
| } |
| } |
| |
| SP_PARM->_color_pairs[pair] = result; |
| if (GET_SCREEN_PAIR(SP_PARM) == pair) |
| SET_SCREEN_PAIR(SP_PARM, (chtype) (~0)); /* force attribute update */ |
| |
| #ifdef USE_TERM_DRIVER |
| CallDriver_3(SP_PARM, 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", |
| TPARM_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); |
| } |
| |
| #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) |
| NCURSES_SP_NAME(init_color) (NCURSES_SP_DCLx |
| NCURSES_COLOR_T color, |
| NCURSES_COLOR_T r, |
| NCURSES_COLOR_T g, |
| NCURSES_COLOR_T b) |
| { |
| int result = ERR; |
| int maxcolors; |
| |
| T((T_CALLED("init_color(%p,%d,%d,%d,%d)"), |
| (void *) SP_PARM, |
| color, |
| r, g, b)); |
| |
| if (SP_PARM == 0) |
| returnCode(result); |
| |
| maxcolors = MaxColors; |
| |
| if (InitColor |
| && SP_PARM->_coloron |
| && (color >= 0 && OkColorHi(color)) |
| && (okRGB(r) && okRGB(g) && okRGB(b))) { |
| |
| SP_PARM->_color_table[color].init = 1; |
| SP_PARM->_color_table[color].r = r; |
| SP_PARM->_color_table[color].g = g; |
| SP_PARM->_color_table[color].b = b; |
| |
| if (UseHlsPalette) { |
| rgb2hls(r, g, b, |
| &SP_PARM->_color_table[color].red, |
| &SP_PARM->_color_table[color].green, |
| &SP_PARM->_color_table[color].blue); |
| } else { |
| SP_PARM->_color_table[color].red = r; |
| SP_PARM->_color_table[color].green = g; |
| SP_PARM->_color_table[color].blue = b; |
| } |
| |
| #ifdef USE_TERM_DRIVER |
| CallDriver_4(SP_PARM, td_initcolor, color, r, g, b); |
| #else |
| NCURSES_PUTP2("initialize_color", |
| TPARM_4(initialize_color, color, r, g, b)); |
| #endif |
| SP_PARM->_color_defs = max(color + 1, SP_PARM->_color_defs); |
| |
| result = OK; |
| } |
| returnCode(result); |
| } |
| |
| #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()"))); |
| 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 |
| |
| 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 result = ERR; |
| int maxcolors; |
| |
| T((T_CALLED("color_content(%p,%d,%p,%p,%p)"), |
| (void *) SP_PARM, |
| color, |
| (void *) r, |
| (void *) g, |
| (void *) b)); |
| |
| if (SP_PARM == 0) |
| returnCode(result); |
| |
| maxcolors = MaxColors; |
| |
| if (color < 0 || !OkColorHi(color) || !SP_PARM->_coloron) { |
| result = ERR; |
| } else { |
| NCURSES_COLOR_T c_r = SP_PARM->_color_table[color].red; |
| NCURSES_COLOR_T c_g = SP_PARM->_color_table[color].green; |
| NCURSES_COLOR_T c_b = SP_PARM->_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; |
| } |
| returnCode(result); |
| } |
| |
| #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) |
| NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx |
| NCURSES_PAIRS_T pair, |
| NCURSES_COLOR_T *f, |
| NCURSES_COLOR_T *b) |
| { |
| int result; |
| |
| T((T_CALLED("pair_content(%p,%d,%p,%p)"), |
| (void *) SP_PARM, |
| (int) pair, |
| (void *) f, |
| (void *) b)); |
| |
| if (!ValidPair(pair)) { |
| result = ERR; |
| } else { |
| NCURSES_COLOR_T fg = (NCURSES_COLOR_T) FORE_OF(SP_PARM->_color_pairs[pair]); |
| NCURSES_COLOR_T bg = (NCURSES_COLOR_T) BACK_OF(SP_PARM->_color_pairs[pair]); |
| |
| #if NCURSES_EXT_FUNCS |
| if (fg == COLOR_DEFAULT) |
| fg = -1; |
| if (bg == COLOR_DEFAULT) |
| bg = -1; |
| #endif |
| |
| if (f) |
| *f = fg; |
| if (b) |
| *b = bg; |
| |
| TR(TRACE_ATTRS, ("...pair_content(%p,%d,%d,%d)", |
| (void *) SP_PARM, |
| (int) pair, |
| (int) fg, (int) bg)); |
| result = OK; |
| } |
| returnCode(result); |
| } |
| |
| #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 |
| NCURSES_COLOR_T fg = COLOR_DEFAULT; |
| NCURSES_COLOR_T bg = COLOR_DEFAULT; |
| NCURSES_COLOR_T old_fg = -1; |
| NCURSES_COLOR_T old_bg = -1; |
| |
| if (!ValidPair(pair)) { |
| return; |
| } else if (pair != 0) { |
| if (set_color_pair) { |
| TPUTS_TRACE("set_color_pair"); |
| NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx |
| TPARM_1(set_color_pair, pair), |
| 1, outc); |
| return; |
| } else if (SP_PARM != 0) { |
| if (pair_content((NCURSES_COLOR_T) pair, &fg, &bg) == ERR) |
| return; |
| } |
| } |
| |
| if (old_pair >= 0 |
| && SP_PARM != 0 |
| && pair_content((NCURSES_COLOR_T) 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) |
| return; |
| } |
| |
| #if NCURSES_EXT_FUNCS |
| if (isDefaultColor(fg)) |
| fg = (NCURSES_COLOR_T) default_fg(NCURSES_SP_ARG); |
| if (isDefaultColor(bg)) |
| bg = (NCURSES_COLOR_T) default_bg(NCURSES_SP_ARG); |
| #endif |
| |
| if (reverse) { |
| NCURSES_COLOR_T 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 |