1 /****************************************************************************
2 * Copyright (c) 1998-2017,2018 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 * and: Juergen Pfeifer 2009 *
34 ****************************************************************************/
38 * Handles color emulation of SYS V curses
41 #define NEW_PAIR_INTERNAL 1
43 #include <curses.priv.h>
48 #define CUR SP_TERMTYPE
51 MODULE_ID("$Id: lib_color.c,v 1.138 2018/05/16 08:24:08 tom Exp $")
53 #ifdef USE_TERM_DRIVER
54 #define CanChange InfoOf(SP_PARM).canchange
55 #define DefaultPalette InfoOf(SP_PARM).defaultPalette
56 #define HasColor InfoOf(SP_PARM).hascolor
57 #define InitColor InfoOf(SP_PARM).initcolor
58 #define MaxColors InfoOf(SP_PARM).maxcolors
59 #define MaxPairs InfoOf(SP_PARM).maxpairs
60 #define UseHlsPalette (DefaultPalette == _nc_hls_palette)
62 #define CanChange can_change
63 #define DefaultPalette (hue_lightness_saturation ? hls_palette : cga_palette)
64 #define HasColor has_color
65 #define InitColor initialize_color
66 #define MaxColors max_colors
67 #define MaxPairs max_pairs
68 #define UseHlsPalette (hue_lightness_saturation)
71 #ifndef USE_TERM_DRIVER
73 * These should be screen structure members. They need to be globals for
74 * historical reasons. So we assign them in start_color() and also in
75 * set_term()'s screen-switching logic.
79 NCURSES_PUBLIC_VAR(COLOR_PAIRS) (void)
81 return SP ? SP->_pair_count : -1;
84 NCURSES_PUBLIC_VAR(COLORS) (void)
86 return SP ? SP->_color_count : -1;
89 NCURSES_EXPORT_VAR(int) COLOR_PAIRS = 0;
90 NCURSES_EXPORT_VAR(int) COLORS = 0;
92 #endif /* !USE_TERM_DRIVER */
94 #define DATA(r,g,b) {r,g,b, 0,0,0, 0}
96 #define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
100 #define OkColorHi(n) (((n) < COLORS) && ((n) < maxcolors))
101 #define InPalette(n) ((n) >= 0 && (n) < MAX_PALETTE)
104 * Given a RGB range of 0..1000, we'll normally set the individual values
105 * to about 2/3 of the maximum, leaving full-range for bold/bright colors.
110 static const color_t cga_palette[] =
113 DATA(RGB_OFF, RGB_OFF, RGB_OFF), /* COLOR_BLACK */
114 DATA(RGB_ON, RGB_OFF, RGB_OFF), /* COLOR_RED */
115 DATA(RGB_OFF, RGB_ON, RGB_OFF), /* COLOR_GREEN */
116 DATA(RGB_ON, RGB_ON, RGB_OFF), /* COLOR_YELLOW */
117 DATA(RGB_OFF, RGB_OFF, RGB_ON), /* COLOR_BLUE */
118 DATA(RGB_ON, RGB_OFF, RGB_ON), /* COLOR_MAGENTA */
119 DATA(RGB_OFF, RGB_ON, RGB_ON), /* COLOR_CYAN */
120 DATA(RGB_ON, RGB_ON, RGB_ON), /* COLOR_WHITE */
123 static const color_t hls_palette[] =
126 DATA( 0, 0, 0), /* COLOR_BLACK */
127 DATA( 120, 50, 100), /* COLOR_RED */
128 DATA( 240, 50, 100), /* COLOR_GREEN */
129 DATA( 180, 50, 100), /* COLOR_YELLOW */
130 DATA( 330, 50, 100), /* COLOR_BLUE */
131 DATA( 60, 50, 100), /* COLOR_MAGENTA */
132 DATA( 300, 50, 100), /* COLOR_CYAN */
133 DATA( 0, 50, 100), /* COLOR_WHITE */
136 #ifdef USE_TERM_DRIVER
137 NCURSES_EXPORT_VAR(const color_t*) _nc_cga_palette = cga_palette;
138 NCURSES_EXPORT_VAR(const color_t*) _nc_hls_palette = hls_palette;
143 #if NCURSES_EXT_FUNCS
145 * These are called from _nc_do_color(), which in turn is called from
146 * vidattr - so we have to assume that sp may be null.
149 default_fg(NCURSES_SP_DCL0)
151 return (SP_PARM != 0) ? SP_PARM->_default_fg : COLOR_WHITE;
155 default_bg(NCURSES_SP_DCL0)
157 return SP_PARM != 0 ? SP_PARM->_default_bg : COLOR_BLACK;
160 #define default_fg(sp) COLOR_WHITE
161 #define default_bg(sp) COLOR_BLACK
164 #ifndef USE_TERM_DRIVER
166 * SVr4 curses is known to interchange color codes (1,4) and (3,6), possibly
167 * to maintain compatibility with a pre-ANSI scheme. The same scheme is
168 * also used in the FreeBSD syscons.
171 toggled_colors(int c)
174 static const int table[] =
175 {0, 4, 2, 6, 1, 5, 3, 7,
176 8, 12, 10, 14, 9, 13, 11, 15};
184 set_background_color(NCURSES_SP_DCLx int bg, NCURSES_SP_OUTC outc)
186 #ifdef USE_TERM_DRIVER
187 CallDriver_3(SP_PARM, td_color, FALSE, bg, outc);
189 if (set_a_background) {
190 TPUTS_TRACE("set_a_background");
191 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
192 TPARM_1(set_a_background, bg),
195 TPUTS_TRACE("set_background");
196 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
197 TPARM_1(set_background, toggled_colors(bg)),
204 set_foreground_color(NCURSES_SP_DCLx int fg, NCURSES_SP_OUTC outc)
206 #ifdef USE_TERM_DRIVER
207 CallDriver_3(SP_PARM, td_color, TRUE, fg, outc);
209 if (set_a_foreground) {
210 TPUTS_TRACE("set_a_foreground");
211 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
212 TPARM_1(set_a_foreground, fg),
215 TPUTS_TRACE("set_foreground");
216 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
217 TPARM_1(set_foreground, toggled_colors(fg)),
224 init_color_table(NCURSES_SP_DCL0)
226 const color_t *tp = DefaultPalette;
231 for (n = 0; n < COLORS; n++) {
233 SP_PARM->_color_table[n] = tp[n];
235 SP_PARM->_color_table[n] = tp[n % MAX_PALETTE];
237 SP_PARM->_color_table[n].green = 100;
239 if (SP_PARM->_color_table[n].red)
240 SP_PARM->_color_table[n].red = 1000;
241 if (SP_PARM->_color_table[n].green)
242 SP_PARM->_color_table[n].green = 1000;
243 if (SP_PARM->_color_table[n].blue)
244 SP_PARM->_color_table[n].blue = 1000;
251 init_direct_colors(NCURSES_SP_DCL0)
253 static NCURSES_CONST char name[] = "RGB";
258 rgb_bits_t *result = &(SP_PARM->_direct_color);
263 /* find the number of bits needed for the maximum color value */
264 for (width = 0; (1 << width) - 1 < (COLORS - 1); ++width) {
268 if ((n = tigetflag(name)) > 0) {
270 result->bits.red = UChar(n);
271 result->bits.green = UChar(n);
272 result->bits.blue = UChar(width - (2 * n));
273 } else if ((n = tigetnum(name)) > 0) {
274 result->bits.red = UChar(n);
275 result->bits.green = UChar(n);
276 result->bits.blue = UChar(n);
277 } else if ((s = tigetstr(name)) != 0 && VALID_STRING(s)) {
280 int blue = width - (2 * n);
282 switch (sscanf(s, "%d/%d/%d", &red, &green, &blue)) {
284 blue = width - (2 * n);
296 result->bits.red = UChar(red);
297 result->bits.green = UChar(green);
298 result->bits.blue = UChar(blue);
301 return (result->value != 0);
305 * Reset the color pair, e.g., to whatever color pair 0 is.
308 reset_color_pair(NCURSES_SP_DCL0)
310 #ifdef USE_TERM_DRIVER
311 return CallDriver(SP_PARM, td_rescol);
316 if (orig_pair != 0) {
317 (void) NCURSES_PUTP2("orig_pair", orig_pair);
325 * Reset color pairs and definitions. Actually we do both more to accommodate
326 * badly-written terminal descriptions than for the relatively rare case where
327 * someone has changed the color definitions.
330 NCURSES_SP_NAME(_nc_reset_colors) (NCURSES_SP_DCL0)
334 T((T_CALLED("_nc_reset_colors(%p)"), (void *) SP_PARM));
335 if (SP_PARM->_color_defs > 0)
336 SP_PARM->_color_defs = -(SP_PARM->_color_defs);
337 if (reset_color_pair(NCURSES_SP_ARG))
340 #ifdef USE_TERM_DRIVER
341 result = CallDriver(SP_PARM, td_rescolors);
343 if (orig_colors != 0) {
344 NCURSES_PUTP2("orig_colors", orig_colors);
353 _nc_reset_colors(void)
355 return NCURSES_SP_NAME(_nc_reset_colors) (CURRENT_SCREEN);
360 NCURSES_SP_NAME(start_color) (NCURSES_SP_DCL0)
363 int maxpairs = 0, maxcolors = 0;
365 T((T_CALLED("start_color(%p)"), (void *) SP_PARM));
369 } else if (SP_PARM->_coloron) {
373 maxcolors = MaxColors;
374 if (reset_color_pair(NCURSES_SP_ARG) != TRUE) {
375 set_foreground_color(NCURSES_SP_ARGx
376 default_fg(NCURSES_SP_ARG),
377 NCURSES_SP_NAME(_nc_outch));
378 set_background_color(NCURSES_SP_ARGx
379 default_bg(NCURSES_SP_ARG),
380 NCURSES_SP_NAME(_nc_outch));
382 #if !NCURSES_EXT_COLORS
384 * Without ext-colors, we cannot represent more than 256 color pairs.
390 if (maxpairs > 0 && maxcolors > 0) {
391 SP_PARM->_pair_limit = maxpairs;
393 #if NCURSES_EXT_FUNCS
395 * If using default colors, allocate extra space in table to
396 * allow for default-color as a component of a color-pair.
398 SP_PARM->_pair_limit += (1 + (2 * maxcolors));
399 SP_PARM->_pair_limit = limit_PAIRS(SP_PARM->_pair_limit);
401 SP_PARM->_pair_count = maxpairs;
402 SP_PARM->_color_count = maxcolors;
404 COLOR_PAIRS = maxpairs;
408 _nc_reserve_pairs(SP_PARM, 16);
409 if (SP_PARM->_color_pairs != 0) {
410 if (init_direct_colors(NCURSES_SP_ARG)) {
413 SP_PARM->_color_table = TYPE_CALLOC(color_t, maxcolors);
414 if (SP_PARM->_color_table != 0) {
415 MakeColorPair(SP_PARM->_color_pairs[0],
416 default_fg(NCURSES_SP_ARG),
417 default_bg(NCURSES_SP_ARG));
418 init_color_table(NCURSES_SP_ARG);
424 T(("started color: COLORS = %d, COLOR_PAIRS = %d",
425 COLORS, COLOR_PAIRS));
427 SP_PARM->_coloron = 1;
428 } else if (SP_PARM->_color_pairs != 0) {
429 FreeAndNull(SP_PARM->_color_pairs);
443 return NCURSES_SP_NAME(start_color) (CURRENT_SCREEN);
447 /* This function was originally written by Daniel Weaver <danw@znyx.com> */
449 rgb2hls(int r, int g, int b, int *h, int *l, int *s)
450 /* convert RGB to HLS system */
454 if ((min = g < r ? g : r) > b)
456 if ((max = g > r ? g : r) < b)
459 /* calculate lightness */
460 *l = ((min + max) / 20);
462 if (min == max) { /* black, white and all shades of gray */
468 /* calculate saturation */
470 *s = (((max - min) * 100) / (max + min));
472 *s = (((max - min) * 100) / (2000 - max - min));
476 t = (120 + ((g - b) * 60) / (max - min));
478 t = (240 + ((b - r) * 60) / (max - min));
480 t = (360 + ((r - g) * 60) / (max - min));
486 * Change all cells which use(d) a given color pair to force a repaint.
489 _nc_change_pair(SCREEN *sp, int pair)
493 if (CurScreen(sp)->_clear)
496 if (_nc_globals.leak_checking)
500 for (y = 0; y <= CurScreen(sp)->_maxy; y++) {
501 struct ldat *ptr = &(CurScreen(sp)->_line[y]);
502 bool changed = FALSE;
503 for (x = 0; x <= CurScreen(sp)->_maxx; x++) {
504 if (GetPair(ptr->text[x]) == pair) {
505 /* Set the old cell to zero to ensure it will be
506 updated on the next doupdate() */
507 SetChar(ptr->text[x], 0, 0);
508 CHANGED_CELL(ptr, x);
513 NCURSES_SP_NAME(_nc_make_oldhash) (NCURSES_SP_ARGx y);
517 NCURSES_EXPORT(colorpair_t *)
518 _nc_reserve_pairs(SCREEN *sp, int want)
520 colorpair_t *result = 0;
521 int have = sp->_pair_alloc;
523 if ((sp->_color_pairs != 0) && (want < sp->_pair_alloc)) {
524 result = &(sp->_color_pairs[want]);
531 if (have > sp->_pair_limit)
532 have = sp->_pair_limit;
534 if (sp->_color_pairs == 0) {
535 sp->_color_pairs = TYPE_CALLOC(colorpair_t, have);
536 } else if (have > sp->_pair_alloc) {
537 #if NCURSES_EXT_COLORS
540 if ((next = typeCalloc(colorpair_t, have)) == 0)
541 _nc_err_abort(MSG_NO_MEMORY);
542 memcpy(next, sp->_color_pairs, (size_t) sp->_pair_alloc * sizeof(*next));
543 _nc_copy_pairs(sp, next, sp->_color_pairs, sp->_pair_alloc);
544 free(sp->_color_pairs);
545 sp->_color_pairs = next;
547 TYPE_REALLOC(colorpair_t, have, sp->_color_pairs);
548 if (sp->_color_pairs != 0) {
549 memset(sp->_color_pairs + sp->_pair_alloc, 0,
550 sizeof(colorpair_t) * (size_t) (have - sp->_pair_alloc));
554 if (sp->_color_pairs != 0) {
555 sp->_pair_alloc = have;
556 result = &(sp->_color_pairs[want]);
563 * Extension (1997/1/18) - Allow negative f/b values to set default color
567 _nc_init_pair(SCREEN *sp, int pair, int f, int b)
569 static colorpair_t null_pair;
570 colorpair_t result = null_pair;
571 colorpair_t previous;
574 T((T_CALLED("init_pair(%p,%d,%d,%d)"), (void *) sp, pair, f, b));
576 if (!ValidPair(sp, pair))
579 maxcolors = MaxColors;
581 _nc_reserve_pairs(sp, pair);
582 previous = sp->_color_pairs[pair];
583 #if NCURSES_EXT_FUNCS
584 if (sp->_default_color || sp->_assumed_color) {
585 bool isDefault = FALSE;
586 bool wasDefault = FALSE;
587 int default_pairs = sp->_default_pairs;
590 * Map caller's color number, e.g., -1, 0, 1, .., 7, etc., into
591 * internal unsigned values which we will store in the _color_pairs[]
594 if (isDefaultColor(f)) {
597 } else if (!OkColorHi(f)) {
601 if (isDefaultColor(b)) {
604 } else if (!OkColorHi(b)) {
609 * Check if the table entry that we are going to init/update used
612 if (isDefaultColor(FORE_OF(previous))
613 || isDefaultColor(BACK_OF(previous)))
617 * Keep track of the number of entries in the color pair table which
618 * used a default color.
620 if (isDefault && !wasDefault) {
622 } else if (wasDefault && !isDefault) {
627 * As an extension, ncurses allows the pair number to exceed the
628 * terminal's color_pairs value for pairs using a default color.
630 * Note that updating a pair which used a default color with one
631 * that does not will decrement the count - and possibly interfere
632 * with sequentially adding new pairs.
634 if (pair > (sp->_pair_count + default_pairs)) {
637 sp->_default_pairs = default_pairs;
641 if ((f < 0) || !OkColorHi(f)
642 || (b < 0) || !OkColorHi(b)
649 * When a pair's content is changed, replace its colors (if pair was
650 * initialized before a screen update is performed replacing original
651 * pair colors with the new ones).
653 MakeColorPair(result, f, b);
654 if ((FORE_OF(previous) != 0
655 || BACK_OF(previous) != 0)
656 && !isSamePair(previous, result)) {
657 _nc_change_pair(sp, pair);
660 _nc_reset_color_pair(sp, pair, &result);
661 sp->_color_pairs[pair] = result;
662 _nc_set_color_pair(sp, pair, cpINIT);
664 if (GET_SCREEN_PAIR(sp) == pair)
665 SET_SCREEN_PAIR(sp, (int) (~0)); /* force attribute update */
667 #ifdef USE_TERM_DRIVER
668 CallDriver_3(sp, td_initpair, pair, f, b);
670 if (initialize_pair && InPalette(f) && InPalette(b)) {
671 const color_t *tp = DefaultPalette;
674 ("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)",
676 (int) tp[f].red, (int) tp[f].green, (int) tp[f].blue,
677 (int) tp[b].red, (int) tp[b].green, (int) tp[b].blue));
679 NCURSES_PUTP2("initialize_pair",
680 TPARM_7(initialize_pair,
695 NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx
696 NCURSES_PAIRS_T pair,
700 return _nc_init_pair(SP_PARM, pair, f, b);
705 init_pair(NCURSES_COLOR_T pair, NCURSES_COLOR_T f, NCURSES_COLOR_T b)
707 return NCURSES_SP_NAME(init_pair) (CURRENT_SCREEN, pair, f, b);
711 #define okRGB(n) ((n) >= 0 && (n) <= 1000)
714 _nc_init_color(SCREEN *sp, int color, int r, int g, int b)
719 T((T_CALLED("init_color(%p,%d,%d,%d,%d)"),
724 if (sp == 0 || sp->_direct_color.value)
727 maxcolors = MaxColors;
731 && (color >= 0 && OkColorHi(color))
732 && (okRGB(r) && okRGB(g) && okRGB(b))) {
734 sp->_color_table[color].init = 1;
735 sp->_color_table[color].r = r;
736 sp->_color_table[color].g = g;
737 sp->_color_table[color].b = b;
741 &sp->_color_table[color].red,
742 &sp->_color_table[color].green,
743 &sp->_color_table[color].blue);
745 sp->_color_table[color].red = r;
746 sp->_color_table[color].green = g;
747 sp->_color_table[color].blue = b;
750 #ifdef USE_TERM_DRIVER
751 CallDriver_4(sp, td_initcolor, color, r, g, b);
753 NCURSES_PUTP2("initialize_color",
754 TPARM_4(initialize_color, color, r, g, b));
756 sp->_color_defs = max(color + 1, sp->_color_defs);
764 NCURSES_SP_NAME(init_color) (NCURSES_SP_DCLx
765 NCURSES_COLOR_T color,
770 return _nc_init_color(SP_PARM, color, r, g, b);
775 init_color(NCURSES_COLOR_T color,
780 return NCURSES_SP_NAME(init_color) (CURRENT_SCREEN, color, r, g, b);
785 NCURSES_SP_NAME(can_change_color) (NCURSES_SP_DCL)
789 T((T_CALLED("can_change_color(%p)"), (void *) SP_PARM));
791 if (HasTerminal(SP_PARM) && (CanChange != 0)) {
800 can_change_color(void)
802 return NCURSES_SP_NAME(can_change_color) (CURRENT_SCREEN);
807 NCURSES_SP_NAME(has_colors) (NCURSES_SP_DCL0)
812 T((T_CALLED("has_colors()")));
813 if (HasTerminal(SP_PARM)) {
814 #ifdef USE_TERM_DRIVER
817 code = ((VALID_NUMERIC(max_colors) && VALID_NUMERIC(max_pairs)
818 && (((set_foreground != NULL)
819 && (set_background != NULL))
820 || ((set_a_foreground != NULL)
821 && (set_a_background != NULL))
822 || set_color_pair)) ? TRUE : FALSE);
832 return NCURSES_SP_NAME(has_colors) (CURRENT_SCREEN);
837 _nc_color_content(SCREEN *sp, int color, int *r, int *g, int *b)
842 T((T_CALLED("color_content(%p,%d,%p,%p,%p)"),
852 maxcolors = MaxColors;
854 if (color < 0 || !OkColorHi(color) || !sp->_coloron) {
859 if (sp->_direct_color.value) {
860 rgb_bits_t *work = &(sp->_direct_color);
862 #define max_direct_color(name) ((1 << work->bits.name) - 1)
863 #define value_direct_color(max) (1000 * ((color >> bitoff) & max)) / max
865 int max_r = max_direct_color(red);
866 int max_g = max_direct_color(green);
867 int max_b = max_direct_color(blue);
871 c_b = value_direct_color(max_b);
872 bitoff += work->bits.blue;
874 c_g = value_direct_color(max_g);
875 bitoff += work->bits.green;
877 c_r = value_direct_color(max_r);
880 c_r = sp->_color_table[color].red;
881 c_g = sp->_color_table[color].green;
882 c_b = sp->_color_table[color].blue;
892 TR(TRACE_ATTRS, ("...color_content(%d,%d,%d,%d)",
893 color, c_r, c_g, c_b));
900 NCURSES_SP_NAME(color_content) (NCURSES_SP_DCLx
901 NCURSES_COLOR_T color,
906 int my_r, my_g, my_b;
907 int rc = _nc_color_content(SP_PARM, color, &my_r, &my_g, &my_b);
909 *r = limit_COLOR(my_r);
910 *g = limit_COLOR(my_g);
911 *b = limit_COLOR(my_b);
918 color_content(NCURSES_COLOR_T color,
923 return NCURSES_SP_NAME(color_content) (CURRENT_SCREEN, color, r, g, b);
928 _nc_pair_content(SCREEN *sp, int pair, int *f, int *b)
932 T((T_CALLED("pair_content(%p,%d,%p,%p)"),
938 if (!ValidPair(sp, pair)) {
944 _nc_reserve_pairs(sp, pair);
945 fg = FORE_OF(sp->_color_pairs[pair]);
946 bg = BACK_OF(sp->_color_pairs[pair]);
947 #if NCURSES_EXT_FUNCS
948 if (isDefaultColor(fg))
950 if (isDefaultColor(bg))
959 TR(TRACE_ATTRS, ("...pair_content(%p,%d,%d,%d)",
962 (int) fg, (int) bg));
969 NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx
970 NCURSES_PAIRS_T pair,
975 int rc = _nc_pair_content(SP_PARM, pair, &my_f, &my_b);
977 *f = limit_COLOR(my_f);
978 *b = limit_COLOR(my_b);
985 pair_content(NCURSES_COLOR_T pair, NCURSES_COLOR_T *f, NCURSES_COLOR_T *b)
987 return NCURSES_SP_NAME(pair_content) (CURRENT_SCREEN, pair, f, b);
992 NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_DCLx
996 NCURSES_SP_OUTC outc)
998 #ifdef USE_TERM_DRIVER
999 CallDriver_4(SP_PARM, td_docolor, old_pair, pair, reverse, outc);
1001 int fg = COLOR_DEFAULT;
1002 int bg = COLOR_DEFAULT;
1006 if (!ValidPair(SP_PARM, pair)) {
1008 } else if (pair != 0) {
1009 if (set_color_pair) {
1010 TPUTS_TRACE("set_color_pair");
1011 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
1012 TPARM_1(set_color_pair, pair),
1015 } else if (SP_PARM != 0) {
1016 if (_nc_pair_content(SP_PARM, pair, &fg, &bg) == ERR)
1023 && _nc_pair_content(SP_PARM, old_pair, &old_fg, &old_bg) != ERR) {
1024 if ((isDefaultColor(fg) && !isDefaultColor(old_fg))
1025 || (isDefaultColor(bg) && !isDefaultColor(old_bg))) {
1026 #if NCURSES_EXT_FUNCS
1028 * A minor optimization - but extension. If "AX" is specified in
1029 * the terminal description, treat it as screen's indicator of ECMA
1030 * SGR 39 and SGR 49, and assume the two sequences are independent.
1032 if (SP_PARM->_has_sgr_39_49
1033 && isDefaultColor(old_bg)
1034 && !isDefaultColor(old_fg)) {
1035 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx "\033[39m", 1, outc);
1036 } else if (SP_PARM->_has_sgr_39_49
1037 && isDefaultColor(old_fg)
1038 && !isDefaultColor(old_bg)) {
1039 NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx "\033[49m", 1, outc);
1042 reset_color_pair(NCURSES_SP_ARG);
1045 reset_color_pair(NCURSES_SP_ARG);
1046 if (old_pair < 0 && pair <= 0)
1050 #if NCURSES_EXT_FUNCS
1051 if (isDefaultColor(fg))
1052 fg = default_fg(NCURSES_SP_ARG);
1053 if (isDefaultColor(bg))
1054 bg = default_bg(NCURSES_SP_ARG);
1063 TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair,
1066 if (!isDefaultColor(fg)) {
1067 set_foreground_color(NCURSES_SP_ARGx fg, outc);
1069 if (!isDefaultColor(bg)) {
1070 set_background_color(NCURSES_SP_ARGx bg, outc);
1075 #if NCURSES_SP_FUNCS
1076 NCURSES_EXPORT(void)
1077 _nc_do_color(int old_pair, int pair, int reverse, NCURSES_OUTC outc)
1079 SetSafeOutcWrapper(outc);
1080 NCURSES_SP_NAME(_nc_do_color) (CURRENT_SCREEN,
1088 #if NCURSES_EXT_COLORS
1090 NCURSES_SP_NAME(init_extended_pair) (NCURSES_SP_DCLx int pair, int f, int b)
1092 return _nc_init_pair(SP_PARM, pair, f, b);
1096 NCURSES_SP_NAME(init_extended_color) (NCURSES_SP_DCLx
1098 int r, int g, int b)
1100 return _nc_init_color(SP_PARM, color, r, g, b);
1104 NCURSES_SP_NAME(extended_color_content) (NCURSES_SP_DCLx
1106 int *r, int *g, int *b)
1108 return _nc_color_content(SP_PARM, color, r, g, b);
1112 NCURSES_SP_NAME(extended_pair_content) (NCURSES_SP_DCLx
1116 return _nc_pair_content(SP_PARM, pair, f, b);
1119 NCURSES_EXPORT(void)
1120 NCURSES_SP_NAME(reset_color_pairs) (NCURSES_SP_DCL0)
1123 if (SP_PARM->_color_pairs) {
1124 _nc_free_ordered_pairs(SP_PARM);
1125 free(SP_PARM->_color_pairs);
1126 SP_PARM->_color_pairs = 0;
1127 SP_PARM->_pair_alloc = 0;
1128 _nc_reserve_pairs(SP_PARM, 16);
1129 clearok(CurScreen(SP_PARM), TRUE);
1130 touchwin(StdScreen(SP_PARM));
1135 #if NCURSES_SP_FUNCS
1137 init_extended_pair(int pair, int f, int b)
1139 return NCURSES_SP_NAME(init_extended_pair) (CURRENT_SCREEN, pair, f, b);
1143 init_extended_color(int color, int r, int g, int b)
1145 return NCURSES_SP_NAME(init_extended_color) (CURRENT_SCREEN,
1151 extended_color_content(int color, int *r, int *g, int *b)
1153 return NCURSES_SP_NAME(extended_color_content) (CURRENT_SCREEN,
1159 extended_pair_content(int pair, int *f, int *b)
1161 return NCURSES_SP_NAME(extended_pair_content) (CURRENT_SCREEN, pair, f, b);
1164 NCURSES_EXPORT(void)
1165 reset_color_pairs(void)
1167 NCURSES_SP_NAME(reset_color_pairs) (CURRENT_SCREEN);
1169 #endif /* NCURSES_SP_FUNCS */
1170 #endif /* NCURSES_EXT_COLORS */