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/* This work is copyrighted. See COPYRIGHT.NEW for *
* details. If they are missing then this copy is in violation of *
* the copyright conditions. */
/* lib_color.c
*
* Handles color emulation of SYS V curses
*
*/
#include <stdlib.h>
#include "curses.priv.h"
#include "terminfo.h"
int COLOR_PAIRS;
int COLORS;
unsigned char *color_pairs;
int start_color()
{
T(("start_color() called."));
if (orig_pair != NULL)
putp(orig_pair);
else return ERR;
if (max_pairs != -1)
COLOR_PAIRS = max_pairs;
else return ERR;
color_pairs = malloc(max_pairs);
if (max_colors != -1)
COLORS = max_colors;
else return ERR;
SP->_coloron = 1;
T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS));
return OK;
}
int init_pair(short pair, short f, short b)
{
T(("init_pair( %d, %d, %d )", pair, f, b));
if ((pair < 1) || (pair >= COLOR_PAIRS))
return ERR;
if ((f < 0) || (f >= COLORS) || (b < 0) || (b >= COLORS))
return ERR;
/* still to do:
if pair was initialized before a screen update is performed
replacing original pair colors with the new ones
*/
color_pairs[pair] = ( (f & 0x0f) | (b & 0x0f) << 4 );
return OK;
}
int init_color(short color, short r, short g, short b)
{
if (initialize_color != NULL) {
if (color < 0 || color >= COLORS)
return ERR;
if (hue_lightness_saturation == TRUE)
if (r < 0 || r > 360 || g < 0 || g > 100 || b < 0 || b > 100)
return ERR;
if (hue_lightness_saturation == FALSE)
if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000)
return ERR;
putp(tparm(initialize_color, color, r, g, b));
return OK;
}
return ERR;
}
bool can_change_color()
{
return can_change;
}
int has_colors()
{
return ((orig_pair != NULL) && (max_colors != -1) && (max_pairs != -1)
&&
(((set_foreground != NULL) && (set_background != NULL)) ||
((set_a_foreground != NULL) && (set_a_background != NULL)))
);
}
int color_content(short color, short *r, short *g, short *b)
{
return ERR;
}
int pair_content(short pair, short *f, short *b)
{
if ((pair < 1) || (pair > COLOR_PAIRS))
return ERR;
*f = color_pairs[pair] & 0x0f;
*b = color_pairs[pair] & 0xf0;
*b >>= 4;
return OK;
}
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