-
-/***************************************************************************
-* COPYRIGHT NOTICE *
-****************************************************************************
-* ncurses is copyright (C) 1992-1995 *
-* Zeyd M. Ben-Halim *
-* zmbenhal@netcom.com *
-* Eric S. Raymond *
-* esr@snark.thyrsus.com *
-* *
-* Permission is hereby granted to reproduce and distribute ncurses *
-* by any means and for any fee, whether alone or as part of a *
-* larger distribution, in source or in binary form, PROVIDED *
-* this notice is included with any such distribution, and is not *
-* removed from any of its header files. Mention of ncurses in any *
-* applications linked with it is highly appreciated. *
-* *
-* ncurses comes AS IS with no warranty, implied or expressed. *
-* *
-***************************************************************************/
+/****************************************************************************
+ * Copyright (c) 1998 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> *
+ ****************************************************************************/
/* lib_color.c
*
#include <term.h>
-MODULE_ID("$Id: lib_color.c,v 1.17 1997/05/03 19:16:05 tom Exp $")
+MODULE_ID("$Id: lib_color.c,v 1.24 1998/02/11 12:13:58 tom Exp $")
+
+/*
+ * Only 8 ANSI colors are defined; the ISO 6429 control sequences work only
+ * for 8 values (0-7).
+ */
+#define MAX_ANSI_COLOR 8
/*
* These should be screen structure members. They need to be globals for
int COLOR_PAIRS;
int COLORS;
+/*
+ * 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
+
static const color_t cga_palette[] =
{
- /* R G B */
- {0, 0, 0}, /* COLOR_BLACK */
- {1000, 0, 0}, /* COLOR_RED */
- {0, 1000, 0}, /* COLOR_GREEN */
- {1000, 1000, 0}, /* COLOR_YELLOW */
- {0, 0, 1000}, /* COLOR_BLUE */
- {1000, 0, 1000}, /* COLOR_MAGENTA */
- {0, 1000, 1000}, /* COLOR_CYAN */
- {1000, 1000, 1000}, /* COLOR_WHITE */
+ /* 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 */
};
static const color_t hls_palette[] =
{
}
#ifdef hue_lightness_saturation
+/* 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)
/* convert RGB to HLS system */
{
short min, max, t;
-
+
if ((min = g < r ? g : r) > b) min = b;
if ((max = g > r ? g : r) < b) max = b;
if (color < 0 || color >= COLORS)
returnCode(ERR);
-#ifdef hue_lightness_saturation
- if (hue_lightness_saturation == TRUE)
- if (r < 0 || r > 360 || g < 0 || g > 100 || b < 0 || b > 100)
- returnCode(ERR);
- if (hue_lightness_saturation == FALSE)
-#endif /* hue_lightness_saturation */
- if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000)
- returnCode(ERR);
+ if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000)
+ returnCode(ERR);
#ifdef hue_lightness_saturation
if (hue_lightness_saturation)
bool can_change_color(void)
{
T((T_CALLED("can_change_color()")));
- returnCode(can_change != 0);
+ returnCode ((can_change != 0) ? TRUE : FALSE);
}
bool has_colors(void)
{
T((T_CALLED("has_colors()")));
- returnCode((orig_pair != NULL || orig_colors != NULL)
- && (max_colors != -1) && (max_pairs != -1)
- &&
- (((set_foreground != NULL) && (set_background != NULL))
- || ((set_a_foreground != NULL) && (set_a_background != NULL))
- || set_color_pair)
- );
+ returnCode (((orig_pair != NULL || orig_colors != NULL)
+ && (max_colors != -1) && (max_pairs != -1)
+ && (((set_foreground != NULL)
+ && (set_background != NULL))
+ || ((set_a_foreground != NULL)
+ && (set_a_background != NULL))
+ || set_color_pair)) ? TRUE : FALSE);
}
int color_content(short color, short *r, short *g, short *b)
if (color < 0 || color > COLORS)
returnCode(ERR);
- *r = SP->_color_table[color].red;
- *g = SP->_color_table[color].green;
- *b = SP->_color_table[color].blue;
+ 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);
}
if ((pair < 0) || (pair > COLOR_PAIRS))
returnCode(ERR);
- *f = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK);
- *b = (SP->_color_pairs[pair] & C_MASK);
+ if (f) *f = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK);
+ if (b) *b = (SP->_color_pairs[pair] & C_MASK);
returnCode(OK);
}
return c;
}
-void _nc_do_color(int pair, int (*outc)(int))
+void _nc_do_color(int pair, bool reverse, int (*outc)(int))
{
short fg, bg;
+ if (reverse)
+ pair = -pair;
+
if (pair == 0)
{
if (orig_pair)
else
{
pair_content(pair, &fg, &bg);
+ if (reverse) {
+ short xx = fg;
+ fg = bg;
+ bg = xx;
+ }
T(("setting colors: pair = %d, fg = %d, bg = %d", pair, fg, bg));
}
if (fg != C_MASK)
{
- if (set_a_foreground)
+ if (set_a_foreground && fg <= MAX_ANSI_COLOR)
{
TPUTS_TRACE("set_a_foreground");
tputs(tparm(set_a_foreground, fg), 1, outc);
}
if (bg != C_MASK)
{
- if (set_a_background)
+ if (set_a_background && bg <= MAX_ANSI_COLOR)
{
TPUTS_TRACE("set_a_background");
tputs(tparm(set_a_background, bg), 1, outc);
projects / ncurses.git / blobdiff