X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_color.c;h=409b66cab6a06a1e98558a95e600a693c2c41d9f;hp=ed0c642727018722c0ee55cf2139c409122c2d2f;hb=cccf831ed7c83410c7f6cec2a43e71e9c4278b4c;hpb=90d42867e1296bc79021006a92032c76e59068b6

diff --git a/ncurses/base/lib_color.c b/ncurses/base/lib_color.c
index ed0c6427..409b66ca 100644
--- a/ncurses/base/lib_color.c
+++ b/ncurses/base/lib_color.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2016,2017 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2017,2018 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            *
@@ -48,7 +48,7 @@
 #define CUR SP_TERMTYPE
 #endif
 
-MODULE_ID("$Id: lib_color.c,v 1.115 2017/03/09 00:35:14 tom Exp $")
+MODULE_ID("$Id: lib_color.c,v 1.138 2018/05/16 08:24:08 tom Exp $")
 
 #ifdef USE_TERM_DRIVER
 #define CanChange      InfoOf(SP_PARM).canchange
@@ -247,6 +247,60 @@ init_color_table(NCURSES_SP_DCL0)
     }
 }
 
+static bool
+init_direct_colors(NCURSES_SP_DCL0)
+{
+    static NCURSES_CONST char name[] = "RGB";
+
+    int n;
+    const char *s;
+    int width;
+    rgb_bits_t *result = &(SP_PARM->_direct_color);
+
+    result->value = 0;
+
+    if (COLORS >= 8) {
+	/* find the number of bits needed for the maximum color value */
+	for (width = 0; (1 << width) - 1 < (COLORS - 1); ++width) {
+	    ;
+	}
+
+	if ((n = 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.
  */
@@ -342,8 +396,7 @@ NCURSES_SP_NAME(start_color) (NCURSES_SP_DCL0)
 	     * allow for default-color as a component of a color-pair.
 	     */
 	    SP_PARM->_pair_limit += (1 + (2 * maxcolors));
-	    if ((NCURSES_PAIRS_T) SP_PARM->_pair_limit < 0)
-		SP_PARM->_pair_limit = MAX_XCURSES_PAIR;
+	    SP_PARM->_pair_limit = limit_PAIRS(SP_PARM->_pair_limit);
 #endif
 	    SP_PARM->_pair_count = maxpairs;
 	    SP_PARM->_color_count = maxcolors;
@@ -352,20 +405,26 @@ NCURSES_SP_NAME(start_color) (NCURSES_SP_DCL0)
 	    COLORS = maxcolors;
 #endif
 
-	    SP_PARM->_color_pairs = TYPE_CALLOC(colorpair_t, SP_PARM->_pair_limit);
+	    _nc_reserve_pairs(SP_PARM, 16);
 	    if (SP_PARM->_color_pairs != 0) {
-		SP_PARM->_color_table = TYPE_CALLOC(color_t, maxcolors);
-		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);
-
+		if (init_direct_colors(NCURSES_SP_ARG)) {
+		    result = OK;
+		} else {
+		    SP_PARM->_color_table = TYPE_CALLOC(color_t, maxcolors);
+		    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;
-		    result = OK;
 		} else if (SP_PARM->_color_pairs != 0) {
 		    FreeAndNull(SP_PARM->_color_pairs);
 		}
@@ -387,7 +446,7 @@ start_color(void)
 
 /* 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)
+rgb2hls(int r, int g, int b, int *h, int *l, int *s)
 /* convert RGB to HLS system */
 {
     int min, max, t;
@@ -398,7 +457,7 @@ rgb2hls(int r, int g, int b, NCURSES_COLOR_T *h, NCURSES_COLOR_T *l, NCURSES_COL
 	max = b;
 
     /* calculate lightness */
-    *l = (NCURSES_COLOR_T) ((min + max) / 20);
+    *l = ((min + max) / 20);
 
     if (min == max) {		/* black, white and all shades of gray */
 	*h = 0;
@@ -408,19 +467,19 @@ rgb2hls(int r, int g, int b, NCURSES_COLOR_T *h, NCURSES_COLOR_T *l, NCURSES_COL
 
     /* calculate saturation */
     if (*l < 50)
-	*s = (NCURSES_COLOR_T) (((max - min) * 100) / (max + min));
+	*s = (((max - min) * 100) / (max + min));
     else
-	*s = (NCURSES_COLOR_T) (((max - min) * 100) / (2000 - max - min));
+	*s = (((max - min) * 100) / (2000 - max - min));
 
     /* calculate hue */
     if (r == max)
-	t = (NCURSES_COLOR_T) (120 + ((g - b) * 60) / (max - min));
+	t = (120 + ((g - b) * 60) / (max - min));
     else if (g == max)
-	t = (NCURSES_COLOR_T) (240 + ((b - r) * 60) / (max - min));
+	t = (240 + ((b - r) * 60) / (max - min));
     else
-	t = (NCURSES_COLOR_T) (360 + ((r - g) * 60) / (max - min));
+	t = (360 + ((r - g) * 60) / (max - min));
 
-    *h = (NCURSES_COLOR_T) (t % 360);
+    *h = (t % 360);
 }
 
 /*
@@ -431,6 +490,13 @@ _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;
@@ -448,38 +514,77 @@ _nc_change_pair(SCREEN *sp, int pair)
     }
 }
 
+NCURSES_EXPORT(colorpair_t *)
+_nc_reserve_pairs(SCREEN *sp, int want)
+{
+    colorpair_t *result = 0;
+    int have = sp->_pair_alloc;
+
+    if ((sp->_color_pairs != 0) && (want < sp->_pair_alloc)) {
+	result = &(sp->_color_pairs[want]);
+    } else {
+
+	if (have == 0)
+	    have = 1;
+	while (have <= want)
+	    have *= 2;
+	if (have > sp->_pair_limit)
+	    have = sp->_pair_limit;
+
+	if (sp->_color_pairs == 0) {
+	    sp->_color_pairs = TYPE_CALLOC(colorpair_t, have);
+	} 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;
+	    result = &(sp->_color_pairs[want]);
+	}
+    }
+    return result;
+}
+
 /*
  * 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)
+_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_PARM,
-       (int) pair,
-       (int) f,
-       (int) b));
+    T((T_CALLED("init_pair(%p,%d,%d,%d)"), (void *) sp, pair, f, b));
 
-    if (!ValidPair(SP_PARM, pair))
+    if (!ValidPair(sp, pair))
 	returnCode(ERR);
 
     maxcolors = MaxColors;
 
-    previous = SP_PARM->_color_pairs[pair];
+    _nc_reserve_pairs(sp, pair);
+    previous = sp->_color_pairs[pair];
 #if NCURSES_EXT_FUNCS
-    if (SP_PARM->_default_color || SP_PARM->_assumed_color) {
+    if (sp->_default_color || sp->_assumed_color) {
 	bool isDefault = FALSE;
 	bool wasDefault = FALSE;
-	int default_pairs = SP_PARM->_default_pairs;
+	int default_pairs = sp->_default_pairs;
 
 	/*
 	 * Map caller's color number, e.g., -1, 0, 1, .., 7, etc., into
@@ -526,10 +631,10 @@ NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx
 	 * that does not will decrement the count - and possibly interfere
 	 * with sequentially adding new pairs.
 	 */
-	if (pair > (SP_PARM->_pair_count + default_pairs)) {
+	if (pair > (sp->_pair_count + default_pairs)) {
 	    returnCode(ERR);
 	}
-	SP_PARM->_default_pairs = default_pairs;
+	sp->_default_pairs = default_pairs;
     } else
 #endif
     {
@@ -546,21 +651,21 @@ NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx
      * pair colors with the new ones).
      */
     MakeColorPair(result, f, b);
-    if (FORE_OF(previous) != 0
-	&& BACK_OF(previous) != 0
+    if ((FORE_OF(previous) != 0
+	 || BACK_OF(previous) != 0)
 	&& !isSamePair(previous, result)) {
-	_nc_change_pair(SP_PARM, pair);
+	_nc_change_pair(sp, pair);
     }
 
-    _nc_reset_color_pair(SP_PARM, pair, &result);
-    SP_PARM->_color_pairs[pair] = result;
-    _nc_set_color_pair(SP_PARM, pair, cpINIT);
+    _nc_reset_color_pair(sp, pair, &result);
+    sp->_color_pairs[pair] = result;
+    _nc_set_color_pair(sp, pair, cpINIT);
 
-    if (GET_SCREEN_PAIR(SP_PARM) == pair)
-	SET_SCREEN_PAIR(SP_PARM, (int) (~0));	/* force attribute update */
+    if (GET_SCREEN_PAIR(sp) == pair)
+	SET_SCREEN_PAIR(sp, (int) (~0));	/* force attribute update */
 
 #ifdef USE_TERM_DRIVER
-    CallDriver_3(SP_PARM, td_initpair, pair, f, b);
+    CallDriver_3(sp, td_initpair, pair, f, b);
 #else
     if (initialize_pair && InPalette(f) && InPalette(b)) {
 	const color_t *tp = DefaultPalette;
@@ -586,6 +691,15 @@ NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx
     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)
@@ -597,59 +711,65 @@ init_pair(NCURSES_COLOR_T pair, NCURSES_COLOR_T f, NCURSES_COLOR_T b)
 #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)
+_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_PARM,
+       (void *) sp,
        color,
        r, g, b));
 
-    if (SP_PARM == 0)
+    if (sp == 0 || sp->_direct_color.value)
 	returnCode(result);
 
     maxcolors = MaxColors;
 
     if (InitColor
-	&& SP_PARM->_coloron
+	&& sp->_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;
+	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_PARM->_color_table[color].red,
-		    &SP_PARM->_color_table[color].green,
-		    &SP_PARM->_color_table[color].blue);
+		    &sp->_color_table[color].red,
+		    &sp->_color_table[color].green,
+		    &sp->_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;
+	    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_PARM, td_initcolor, color, r, g, b);
+	CallDriver_4(sp, 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);
+	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,
@@ -713,34 +833,54 @@ has_colors(void)
 }
 #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)
+static int
+_nc_color_content(SCREEN *sp, int color, int *r, int *g, int *b)
 {
     int result = ERR;
     int maxcolors;
 
     T((T_CALLED("color_content(%p,%d,%p,%p,%p)"),
-       (void *) SP_PARM,
+       (void *) sp,
        color,
        (void *) r,
        (void *) g,
        (void *) b));
 
-    if (SP_PARM == 0)
+    if (sp == 0)
 	returnCode(result);
 
     maxcolors = MaxColors;
 
-    if (color < 0 || !OkColorHi(color) || !SP_PARM->_coloron) {
+    if (color < 0 || !OkColorHi(color) || !sp->_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;
+	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;
@@ -756,6 +896,23 @@ NCURSES_SP_NAME(color_content) (NCURSES_SP_DCLx
     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,
@@ -768,25 +925,25 @@ color_content(NCURSES_COLOR_T color,
 #endif
 
 NCURSES_EXPORT(int)
-NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx
-			       NCURSES_PAIRS_T pair,
-			       NCURSES_COLOR_T *f,
-			       NCURSES_COLOR_T *b)
+_nc_pair_content(SCREEN *sp, int pair, int *f, int *b)
 {
     int result;
 
     T((T_CALLED("pair_content(%p,%d,%p,%p)"),
-       (void *) SP_PARM,
+       (void *) sp,
        (int) pair,
        (void *) f,
        (void *) b));
 
-    if (!ValidPair(SP_PARM, pair)) {
+    if (!ValidPair(sp, 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]);
+	int fg;
+	int bg;
 
+	_nc_reserve_pairs(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;
@@ -800,7 +957,7 @@ NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx
 	    *b = bg;
 
 	TR(TRACE_ATTRS, ("...pair_content(%p,%d,%d,%d)",
-			 (void *) SP_PARM,
+			 (void *) sp,
 			 (int) pair,
 			 (int) fg, (int) bg));
 	result = OK;
@@ -808,6 +965,21 @@ NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx
     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)
@@ -826,10 +998,10 @@ NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_DCLx
 #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;
+    int fg = COLOR_DEFAULT;
+    int bg = COLOR_DEFAULT;
+    int old_fg = -1;
+    int old_bg = -1;
 
     if (!ValidPair(SP_PARM, pair)) {
 	return;
@@ -841,14 +1013,14 @@ NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_DCLx
 				    1, outc);
 	    return;
 	} else if (SP_PARM != 0) {
-	    if (pair_content((NCURSES_COLOR_T) pair, &fg, &bg) == ERR)
+	    if (_nc_pair_content(SP_PARM, pair, &fg, &bg) == ERR)
 		return;
 	}
     }
 
     if (old_pair >= 0
 	&& SP_PARM != 0
-	&& pair_content((NCURSES_COLOR_T) old_pair, &old_fg, &old_bg) != ERR) {
+	&& _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
@@ -877,13 +1049,13 @@ NCURSES_SP_NAME(_nc_do_color) (NCURSES_SP_DCLx
 
 #if NCURSES_EXT_FUNCS
     if (isDefaultColor(fg))
-	fg = (NCURSES_COLOR_T) default_fg(NCURSES_SP_ARG);
+	fg = default_fg(NCURSES_SP_ARG);
     if (isDefaultColor(bg))
-	bg = (NCURSES_COLOR_T) default_bg(NCURSES_SP_ARG);
+	bg = default_bg(NCURSES_SP_ARG);
 #endif
 
     if (reverse) {
-	NCURSES_COLOR_T xx = fg;
+	int xx = fg;
 	fg = bg;
 	bg = xx;
     }
@@ -912,3 +1084,87 @@ _nc_do_color(int old_pair, int pair, int reverse, NCURSES_OUTC outc)
 				   _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;
+	    _nc_reserve_pairs(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 */