/****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2007,2009 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 *
/****************************************************************************
* 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
#include <term.h>
#include <tic.h>
-MODULE_ID("$Id: lib_color.c,v 1.62 2002/09/28 20:40:05 tom Exp $")
+MODULE_ID("$Id: lib_color.c,v 1.88 2009/02/15 00:33:02 tom Exp $")
/*
* 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
#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) < max_colors))
+#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.
};
/* *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 != 0) && (pair >= 0) && (pair < SP->_pair_limit) && SP->_coloron)
+
#if NCURSES_EXT_FUNCS
/*
* These are called from _nc_do_color(), which in turn is called from
{
if (set_a_background) {
TPUTS_TRACE("set_a_background");
- tputs(tparm(set_a_background, bg), 1, outc);
+ tputs(TPARM_1(set_a_background, bg), 1, outc);
} else {
TPUTS_TRACE("set_background");
- tputs(tparm(set_background, toggled_colors(bg)), 1, outc);
+ tputs(TPARM_1(set_background, toggled_colors(bg)), 1, outc);
}
}
{
if (set_a_foreground) {
TPUTS_TRACE("set_a_foreground");
- tputs(tparm(set_a_foreground, fg), 1, outc);
+ tputs(TPARM_1(set_a_foreground, fg), 1, outc);
} else {
TPUTS_TRACE("set_foreground");
- tputs(tparm(set_foreground, toggled_colors(fg)), 1, outc);
+ tputs(TPARM_1(set_foreground, toggled_colors(fg)), 1, outc);
}
}
tp = (hue_lightness_saturation) ? hls_palette : cga_palette;
for (n = 0; n < COLORS; n++) {
- if (n < 8) {
+ if (InPalette(n)) {
SP->_color_table[n] = tp[n];
} else {
- SP->_color_table[n] = tp[n % 8];
+ SP->_color_table[n] = tp[n % MAX_PALETTE];
if (hue_lightness_saturation) {
SP->_color_table[n].green = 100;
} else {
}
NCURSES_EXPORT(int)
-start_color(void)
+NCURSES_SP_NAME(start_color) (NCURSES_SP_DCL0)
{
int result = ERR;
T((T_CALLED("start_color()")));
- if (!SP->_coloron) {
+ if (SP_PARM == 0) {
+ result = ERR;
+ } else if (SP_PARM->_coloron) {
+ result = OK;
+ } else {
if (reset_color_pair() != TRUE) {
set_foreground_color(default_fg(), _nc_outch);
}
if (max_pairs > 0 && max_colors > 0) {
- COLOR_PAIRS = SP->_pair_count = max_pairs;
- COLORS = SP->_color_count = max_colors;
+ SP_PARM->_pair_limit = max_pairs;
- if ((SP->_color_pairs = typeCalloc(unsigned short,
- (unsigned) max_pairs)) != 0) {
- if ((SP->_color_table = typeCalloc(color_t, max_colors)) != 0) {
- SP->_color_pairs[0] = PAIR_OF(default_fg(), default_bg());
+#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 * max_colors));
+#endif
+ SP_PARM->_pair_count = max_pairs;
+ SP_PARM->_color_count = max_colors;
+#if !USE_REENTRANT
+ COLOR_PAIRS = max_pairs;
+ COLORS = max_colors;
+#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, max_colors);
+ if (SP_PARM->_color_table != 0) {
+ SP_PARM->_color_pairs[0] = PAIR_OF(default_fg(),
+ default_bg());
init_color_table();
T(("started color: COLORS = %d, COLOR_PAIRS = %d",
COLORS, COLOR_PAIRS));
- SP->_coloron = 1;
+ SP_PARM->_coloron = 1;
result = OK;
- } else {
- FreeAndNull(SP->_color_pairs);
+ } else if (SP_PARM->_color_pairs != 0) {
+ FreeAndNull(SP_PARM->_color_pairs);
}
}
+ } else {
+ result = OK;
}
}
- returnCode(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(short r, short g, short b, short *h, short *l, short *s)
* values.
*/
NCURSES_EXPORT(int)
-init_pair(short pair, short f, short b)
+NCURSES_SP_NAME(init_pair) (NCURSES_SP_DCLx short pair, short f, short b)
{
- unsigned result;
+ colorpair_t result;
+ colorpair_t previous;
T((T_CALLED("init_pair(%d,%d,%d)"), pair, f, b));
- if ((pair < 0) || (pair >= COLOR_PAIRS))
+ if (!ValidPair(pair))
returnCode(ERR);
+
+ previous = SP_PARM->_color_pairs[pair];
#if NCURSES_EXT_FUNCS
- if (SP->_default_color) {
- if (f < 0)
- f = C_MASK;
- if (b < 0)
- b = C_MASK;
- if (f >= COLORS && f != C_MASK)
+ if (SP_PARM->_default_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 (b >= COLORS && b != C_MASK)
+ }
+
+ 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) || (f >= COLORS)
- || (b < 0) || (b >= COLORS)
+ if ((f < 0) || !OkColorHi(f)
+ || (b < 0) || !OkColorHi(b)
|| (pair < 1))
returnCode(ERR);
}
* pair colors with the new ones).
*/
result = PAIR_OF(f, b);
- if (SP->_color_pairs[pair] != 0
- && SP->_color_pairs[pair] != result) {
+ if (previous != 0
+ && previous != result) {
int y, x;
- attr_t z = COLOR_PAIR(pair);
for (y = 0; y <= curscr->_maxy; y++) {
struct ldat *ptr = &(curscr->_line[y]);
bool changed = FALSE;
for (x = 0; x <= curscr->_maxx; x++) {
- if ((AttrOf(ptr->text[x]) & A_COLOR) == z) {
+ 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);
_nc_make_oldhash(y);
}
}
- SP->_color_pairs[pair] = result;
- if ((int) (SP->_current_attr & A_COLOR) == COLOR_PAIR(pair))
- SP->_current_attr |= A_COLOR; /* force attribute update */
+ SP_PARM->_color_pairs[pair] = result;
+ if (GET_SCREEN_PAIR(SP_PARM) == pair)
+ SET_SCREEN_PAIR(SP_PARM, (chtype) (~0)); /* force attribute update */
- if (initialize_pair) {
+ if (initialize_pair && InPalette(f) && InPalette(b)) {
const color_t *tp = hue_lightness_saturation ? hls_palette : cga_palette;
- T(("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)",
- pair,
- tp[f].red, tp[f].green, tp[f].blue,
- tp[b].red, tp[b].green, tp[b].blue));
-
- if (initialize_pair) {
- TPUTS_TRACE("initialize_pair");
- putp(tparm(initialize_pair,
- pair,
- tp[f].red, tp[f].green, tp[f].blue,
- tp[b].red, tp[b].green, tp[b].blue));
- }
+ TR(TRACE_ATTRS,
+ ("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)",
+ pair,
+ tp[f].red, tp[f].green, tp[f].blue,
+ tp[b].red, tp[b].green, tp[b].blue));
+
+ TPUTS_TRACE("initialize_pair");
+ putp(TPARM_7(initialize_pair,
+ pair,
+ tp[f].red, tp[f].green, tp[f].blue,
+ tp[b].red, tp[b].green, tp[b].blue));
}
returnCode(OK);
}
-#define okRGB(n) ((n) >= 0 && (n) < 1000)
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+init_pair(short pair, short f, short b)
+{
+ return NCURSES_SP_NAME(init_pair) (CURRENT_SCREEN, pair, f, b);
+}
+#endif
+
+#define okRGB(n) ((n) >= 0 && (n) <= 1000)
NCURSES_EXPORT(int)
-init_color(short color, short r, short g, short b)
+NCURSES_SP_NAME(init_color) (NCURSES_SP_DCLx
+ short color, short r, short g, short b)
{
int result = ERR;
T((T_CALLED("init_color(%d,%d,%d,%d)"), color, r, g, b));
if (initialize_color != NULL
- && (color >= 0 && color < COLORS)
+ && SP_PARM != 0
+ && SP_PARM->_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;
+ 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 (hue_lightness_saturation) {
rgb2hls(r, g, b,
- &SP->_color_table[color].red,
- &SP->_color_table[color].green,
- &SP->_color_table[color].blue);
+ &SP_PARM->_color_table[color].red,
+ &SP_PARM->_color_table[color].green,
+ &SP_PARM->_color_table[color].blue);
} else {
- SP->_color_table[color].red = r;
- SP->_color_table[color].green = g;
- SP->_color_table[color].blue = b;
+ SP_PARM->_color_table[color].red = r;
+ SP_PARM->_color_table[color].green = g;
+ SP_PARM->_color_table[color].blue = b;
}
TPUTS_TRACE("initialize_color");
- putp(tparm(initialize_color, color, r, g, b));
- SP->_color_defs = max(color + 1, SP->_color_defs);
+ putp(TPARM_4(initialize_color, color, r, g, b));
+ SP_PARM->_color_defs = max(color + 1, SP_PARM->_color_defs);
result = OK;
}
returnCode(result);
}
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+init_color(short color, short r, short g, short b)
+{
+ return NCURSES_SP_NAME(init_color) (CURRENT_SCREEN, color, r, g, b);
+}
+#endif
+
NCURSES_EXPORT(bool)
-can_change_color(void)
+NCURSES_SP_NAME(can_change_color) (NCURSES_SP_DCL0)
{
T((T_CALLED("can_change_color()")));
returnCode((can_change != 0) ? TRUE : FALSE);
}
+#if NCURSES_SP_FUNCS
NCURSES_EXPORT(bool)
-has_colors(void)
+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)
{
T((T_CALLED("has_colors()")));
returnCode((VALID_NUMERIC(max_colors) && VALID_NUMERIC(max_pairs)
|| set_color_pair)) ? TRUE : FALSE);
}
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(bool)
+has_colors(void)
+{
+ return NCURSES_SP_NAME(has_colors) (CURRENT_SCREEN);
+}
+#endif
+
NCURSES_EXPORT(int)
-color_content(short color, short *r, short *g, short *b)
+NCURSES_SP_NAME(color_content) (NCURSES_SP_DCLx short color, short *r,
+ short *g, short *b)
{
+ int result;
+
T((T_CALLED("color_content(%d,%p,%p,%p)"), color, r, g, b));
- if (color < 0 || color >= COLORS)
- returnCode(ERR);
+ if (color < 0 || !OkColorHi(color) || SP_PARM == 0 || !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 (r)
- *r = SP->_color_table[color].red;
- if (g)
- *g = SP->_color_table[color].green;
- if (b)
- *b = SP->_color_table[color].blue;
- T(("...color_content(%d,%d,%d,%d)", color, *r, *g, *b));
- returnCode(OK);
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+color_content(short color, short *r, short *g, short *b)
+{
+ return NCURSES_SP_NAME(color_content) (CURRENT_SCREEN, color, r, g, b);
}
+#endif
NCURSES_EXPORT(int)
-pair_content(short pair, short *f, short *b)
+NCURSES_SP_NAME(pair_content) (NCURSES_SP_DCLx short pair, short *f,
+ short *b)
{
+ int result;
+
T((T_CALLED("pair_content(%d,%p,%p)"), pair, f, b));
- if ((pair < 0) || (pair >= COLOR_PAIRS))
- returnCode(ERR);
- if (f)
- *f = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK);
- if (b)
- *b = (SP->_color_pairs[pair] & C_MASK);
+ if (!ValidPair(pair)) {
+ result = ERR;
+ } else {
+ NCURSES_COLOR_T fg = FORE_OF(SP_PARM->_color_pairs[pair]);
+ NCURSES_COLOR_T bg = BACK_OF(SP_PARM->_color_pairs[pair]);
- T(("...pair_content(%d,%d,%d)", pair, *f, *b));
- returnCode(OK);
+#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(%d,%d,%d)", pair, fg, bg));
+ result = OK;
+ }
+ returnCode(result);
}
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+pair_content(short pair, short *f, short *b)
+{
+ return NCURSES_SP_NAME(pair_content) (CURRENT_SCREEN, pair, f, b);
+}
+#endif
+
NCURSES_EXPORT(void)
-_nc_do_color(int old_pair, int pair, bool reverse, int (*outc) (int))
+_nc_do_color(short old_pair, short pair, bool reverse, int (*outc) (int))
{
- NCURSES_COLOR_T fg = C_MASK, bg = C_MASK;
+ NCURSES_COLOR_T fg = COLOR_DEFAULT;
+ NCURSES_COLOR_T bg = COLOR_DEFAULT;
NCURSES_COLOR_T old_fg, old_bg;
- if (pair < 0 || pair >= COLOR_PAIRS) {
+ if (!ValidPair(pair)) {
return;
} else if (pair != 0) {
if (set_color_pair) {
TPUTS_TRACE("set_color_pair");
- tputs(tparm(set_color_pair, pair), 1, outc);
+ tputs(TPARM_1(set_color_pair, pair), 1, outc);
return;
} else if (SP != 0) {
- pair_content(pair, &fg, &bg);
+ pair_content((short) pair, &fg, &bg);
}
}
if (old_pair >= 0
&& SP != 0
&& pair_content(old_pair, &old_fg, &old_bg) != ERR) {
- if ((fg == C_MASK && old_fg != C_MASK)
- || (bg == C_MASK && old_bg != C_MASK)) {
+ 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->_has_sgr_39_49 && old_bg == C_MASK && old_fg != C_MASK) {
+ if (SP->_has_sgr_39_49
+ && isDefaultColor(old_bg)
+ && !isDefaultColor(old_fg)) {
tputs("\033[39m", 1, outc);
- } else if (SP->_has_sgr_39_49 && old_fg == C_MASK && old_bg != C_MASK) {
+ } else if (SP->_has_sgr_39_49
+ && isDefaultColor(old_fg)
+ && !isDefaultColor(old_bg)) {
tputs("\033[49m", 1, outc);
} else
#endif
}
#if NCURSES_EXT_FUNCS
- if (fg == C_MASK)
+ if (isDefaultColor(fg))
fg = default_fg();
- if (bg == C_MASK)
+ if (isDefaultColor(bg))
bg = default_bg();
#endif
TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair,
fg, bg));
- if (fg != C_MASK) {
+ if (!isDefaultColor(fg)) {
set_foreground_color(fg, outc);
}
- if (bg != C_MASK) {
+ if (!isDefaultColor(bg)) {
set_background_color(bg, outc);
}
}
projects / ncurses.git / blobdiff