/****************************************************************************
- * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2004,2005 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 *
****************************************************************************/
/* lib_color.c
#include <term.h>
#include <tic.h>
-MODULE_ID("$Id: lib_color.c,v 1.53 2000/09/02 18:02:15 tom Exp $")
+MODULE_ID("$Id: lib_color.c,v 1.75 2005/06/18 20:19:08 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.
*/
-int COLOR_PAIRS = 0;
-int COLORS = 0;
+NCURSES_EXPORT_VAR(int) COLOR_PAIRS = 0;
+NCURSES_EXPORT_VAR(int) COLORS = 0;
+
+#define DATA(r,g,b) {r,g,b, 0,0,0, 0}
+
+#define TYPE_CALLOC(type,elts) typeCalloc(type, (unsigned)(elts))
/*
* Given a RGB range of 0..1000, we'll normally set the individual values
static const color_t cga_palette[] =
{
/* R G B */
- {RGB_OFF, RGB_OFF, RGB_OFF}, /* COLOR_BLACK */
- {RGB_ON, RGB_OFF, RGB_OFF}, /* COLOR_RED */
- {RGB_OFF, RGB_ON, RGB_OFF}, /* COLOR_GREEN */
- {RGB_ON, RGB_ON, RGB_OFF}, /* COLOR_YELLOW */
- {RGB_OFF, RGB_OFF, RGB_ON}, /* COLOR_BLUE */
- {RGB_ON, RGB_OFF, RGB_ON}, /* COLOR_MAGENTA */
- {RGB_OFF, RGB_ON, RGB_ON}, /* COLOR_CYAN */
- {RGB_ON, RGB_ON, RGB_ON}, /* COLOR_WHITE */
+ 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 */
- { 0, 0, 0}, /* COLOR_BLACK */
- { 120, 50, 100}, /* COLOR_RED */
- { 240, 50, 100}, /* COLOR_GREEN */
- { 180, 50, 100}, /* COLOR_YELLOW */
- { 330, 50, 100}, /* COLOR_BLUE */
- { 60, 50, 100}, /* COLOR_MAGENTA */
- { 300, 50, 100}, /* COLOR_CYAN */
- { 0, 50, 100}, /* COLOR_WHITE */
+ /* 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 */
};
/* *INDENT-ON* */
if (c < 16) {
static const int table[] =
{0, 4, 2, 6, 1, 5, 3, 7,
- 8, 12, 10, 14, 9, 13, 11, 15};
+ 8, 12, 10, 14, 9, 13, 11, 15};
c = table[c];
}
return c;
}
}
-static bool
-set_original_colors(void)
-{
- if (orig_pair != 0) {
- TPUTS_TRACE("orig_pair");
- putp(orig_pair);
- return TRUE;
- } else if (orig_colors != NULL) {
- TPUTS_TRACE("orig_colors");
- putp(orig_colors);
- return TRUE;
- }
- return FALSE;
-}
-
-int
-start_color(void)
+static void
+init_color_table(void)
{
- int n;
const color_t *tp;
+ int n;
- T((T_CALLED("start_color()")));
-
- if (set_original_colors() != TRUE) {
- set_foreground_color(default_fg(), _nc_outch);
- set_background_color(default_bg(), _nc_outch);
- }
-
- if (VALID_NUMERIC(max_pairs))
- COLOR_PAIRS = SP->_pair_count = max_pairs;
- else
- returnCode(ERR);
- if ((SP->_color_pairs = typeCalloc(unsigned short, max_pairs)) == 0)
- returnCode(ERR);
- SP->_color_pairs[0] = PAIR_OF(default_fg(), default_bg());
- if (VALID_NUMERIC(max_colors))
- COLORS = SP->_color_count = max_colors;
- else
- returnCode(ERR);
- SP->_coloron = 1;
-
- if ((SP->_color_table = typeMalloc(color_t, COLORS)) == 0)
- returnCode(ERR);
tp = (hue_lightness_saturation) ? hls_palette : cga_palette;
for (n = 0; n < COLORS; n++) {
if (n < 8) {
}
}
}
+}
- T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS));
+/*
+ * Reset the color pair, e.g., to whatever color pair 0 is.
+ */
+static bool
+reset_color_pair(void)
+{
+ bool result = FALSE;
- returnCode(OK);
+ if (orig_pair != 0) {
+ TPUTS_TRACE("orig_pair");
+ putp(orig_pair);
+ result = TRUE;
+ }
+ return result;
+}
+
+/*
+ * 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.
+ */
+bool
+_nc_reset_colors(void)
+{
+ int result = FALSE;
+
+ T((T_CALLED("_nc_reset_colors()")));
+ if (SP->_color_defs > 0)
+ SP->_color_defs = -(SP->_color_defs);
+
+ if (reset_color_pair())
+ result = TRUE;
+ if (orig_colors != 0) {
+ TPUTS_TRACE("orig_colors");
+ putp(orig_colors);
+ result = TRUE;
+ }
+ returnBool(result);
+}
+
+NCURSES_EXPORT(int)
+start_color(void)
+{
+ int result = ERR;
+
+ T((T_CALLED("start_color()")));
+
+ if (SP == 0) {
+ result = ERR;
+ } else if (SP->_coloron) {
+ result = OK;
+ } else {
+
+ if (reset_color_pair() != TRUE) {
+ set_foreground_color(default_fg(), _nc_outch);
+ set_background_color(default_bg(), _nc_outch);
+ }
+
+ if (max_pairs > 0 && max_colors > 0) {
+ COLOR_PAIRS = SP->_pair_count = max_pairs;
+ COLORS = SP->_color_count = max_colors;
+
+ if ((SP->_color_pairs = TYPE_CALLOC(colorpair_t,
+ max_pairs)) != 0) {
+ if ((SP->_color_table = TYPE_CALLOC(color_t,
+ max_colors)) != 0) {
+ SP->_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;
+ result = OK;
+ } else if (SP->_color_pairs != 0) {
+ FreeAndNull(SP->_color_pairs);
+ }
+ }
+ } else {
+ result = OK;
+ }
+ }
+ returnCode(result);
}
/* This function was originally written by Daniel Weaver <danw@znyx.com> */
* Extension (1997/1/18) - Allow negative f/b values to set default color
* values.
*/
-int
+NCURSES_EXPORT(int)
init_pair(short pair, short f, short b)
{
- unsigned result;
+ colorpair_t result;
T((T_CALLED("init_pair(%d,%d,%d)"), pair, f, b));
- if ((pair < 0) || (pair >= COLOR_PAIRS))
+ if ((pair < 0) || (pair >= COLOR_PAIRS) || SP == 0 || !SP->_coloron)
returnCode(ERR);
#if NCURSES_EXT_FUNCS
if (SP->_default_color) {
if (f < 0)
- f = C_MASK;
+ f = COLOR_DEFAULT;
if (b < 0)
- b = C_MASK;
- if (f >= COLORS && f != C_MASK)
+ b = COLOR_DEFAULT;
+ if (f >= COLORS && !isDefaultColor(f))
returnCode(ERR);
- if (b >= COLORS && b != C_MASK)
+ if (b >= COLORS && !isDefaultColor(b))
returnCode(ERR);
} else
#endif
if (SP->_color_pairs[pair] != 0
&& SP->_color_pairs[pair] != 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 ((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() */
- ptr->text[x] = 0;
+ SetChar(ptr->text[x], 0, 0);
CHANGED_CELL(ptr, x);
changed = TRUE;
}
}
}
SP->_color_pairs[pair] = result;
- if ((int) (SP->_current_attr & A_COLOR) == COLOR_PAIR(pair))
- SP->_current_attr |= A_COLOR; /* force attribute update */
+ if (GET_SCREEN_PAIR(SP) == pair)
+ SET_SCREEN_PAIR(SP, ~0); /* force attribute update */
if (initialize_pair) {
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));
+ 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));
+ pair,
+ tp[f].red, tp[f].green, tp[f].blue,
+ tp[b].red, tp[b].green, tp[b].blue));
}
}
returnCode(OK);
}
-int
+#define okRGB(n) ((n) >= 0 && (n) <= 1000)
+
+NCURSES_EXPORT(int)
init_color(short color, short r, short g, short b)
{
- T((T_CALLED("init_color(%d,%d,%d,%d)"), color, r, g, b));
+ int result = ERR;
- if (initialize_color == NULL)
- returnCode(ERR);
-
- if (color < 0 || color >= COLORS)
- returnCode(ERR);
- if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000)
- returnCode(ERR);
+ T((T_CALLED("init_color(%d,%d,%d,%d)"), color, r, g, b));
- if (hue_lightness_saturation)
- 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;
- }
+ if (initialize_color != NULL
+ && SP != 0
+ && SP->_coloron
+ && (color >= 0 && color < COLORS)
+ && (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 (hue_lightness_saturation) {
+ 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;
+ }
- if (initialize_color) {
TPUTS_TRACE("initialize_color");
putp(tparm(initialize_color, color, r, g, b));
+ SP->_color_defs = max(color + 1, SP->_color_defs);
+ result = OK;
}
- returnCode(OK);
+ returnCode(result);
}
-bool
+NCURSES_EXPORT(bool)
can_change_color(void)
{
T((T_CALLED("can_change_color()")));
returnCode((can_change != 0) ? TRUE : FALSE);
}
-bool
+NCURSES_EXPORT(bool)
has_colors(void)
{
T((T_CALLED("has_colors()")));
returnCode((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);
+ && (((set_foreground != NULL)
+ && (set_background != NULL))
+ || ((set_a_foreground != NULL)
+ && (set_a_background != NULL))
+ || set_color_pair)) ? TRUE : FALSE);
}
-int
+NCURSES_EXPORT(int)
color_content(short color, short *r, short *g, short *b)
{
- T((T_CALLED("color_content(%d,%p,%p,%p)"), color, r, g, b));
- if (color < 0 || color >= COLORS)
- returnCode(ERR);
+ int 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;
- returnCode(OK);
+ T((T_CALLED("color_content(%d,%p,%p,%p)"), color, r, g, b));
+ if (color < 0 || color >= COLORS || SP == 0 || !SP->_coloron) {
+ result = ERR;
+ } else {
+ NCURSES_COLOR_T c_r = SP->_color_table[color].red;
+ NCURSES_COLOR_T c_g = SP->_color_table[color].green;
+ NCURSES_COLOR_T c_b = SP->_color_table[color].blue;
+
+ if (r)
+ *r = c_r;
+ if (g)
+ *g = c_g;
+ if (b)
+ *b = c_b;
+
+ T(("...color_content(%d,%d,%d,%d)", color, c_r, c_g, c_b));
+ result = OK;
+ }
+ returnCode(result);
}
-int
+NCURSES_EXPORT(int)
pair_content(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 ((pair < 0) || (pair >= COLOR_PAIRS) || SP == 0 || !SP->_coloron) {
+ result = ERR;
+ } else {
+ NCURSES_COLOR_T fg = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK);
+ NCURSES_COLOR_T bg = (SP->_color_pairs[pair] & C_MASK);
- 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;
+
+ T(("...pair_content(%d,%d,%d)", pair, fg, bg));
+ result = OK;
+ }
+ returnCode(result);
}
-void
+NCURSES_EXPORT(void)
_nc_do_color(int old_pair, int 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 (old_pair >= 0 && SP != 0) {
- pair_content(old_pair, &old_fg, &old_bg);
- if ((fg == C_MASK && old_fg != C_MASK)
- || (bg == C_MASK && old_bg != C_MASK)) {
+ if (old_pair >= 0
+ && SP != 0
+ && pair_content(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->_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
- set_original_colors();
+ reset_color_pair();
}
} else {
- set_original_colors();
+ reset_color_pair();
if (old_pair < 0)
return;
}
#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
bg = xx;
}
- TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair, fg, bg));
+ 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