108 lines
2.2 KiB
C
108 lines
2.2 KiB
C
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/* This work is copyrighted. See COPYRIGHT.NEW for *
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* details. If they are missing then this copy is in violation of *
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* the copyright conditions. */
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/* lib_color.c
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*
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* Handles color emulation of SYS V curses
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*
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*/
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#include "curses.priv.h"
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#include <nterm.h>
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int COLOR_PAIRS;
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int COLORS;
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unsigned char color_pairs[64];
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int _coloron = 0;
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int start_color()
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{
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T(("start_color() called."));
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if (orig_pair != NULL)
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tputs(orig_pair, 1, _outc);
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else return ERR;
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if (max_pairs != -1)
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COLOR_PAIRS = max_pairs;
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else return ERR;
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if (max_colors != -1)
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COLORS = max_colors;
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else return ERR;
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_coloron = 1;
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T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS));
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return OK;
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}
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int init_pair(short pair, short f, short b)
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{
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T(("init_pair( %d, %d, %d )", pair, f, b));
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if ((pair < 1) || (pair > COLOR_PAIRS))
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return ERR;
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if ((f < 0) || (f >= COLORS) || (b < 0) || (b >= COLORS))
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return ERR;
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/* still to do:
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if pair was initialized before a screen update is performed
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replacing original pair colors with the new ones
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*/
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color_pairs[pair] = ( (f & 0x0f) | (b & 0x0f) << 4 );
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return color_pairs[pair];
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}
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int init_color(short color, short r, short g, short b)
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{
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if (initialize_color != NULL) {
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if (color < 0 || color >= COLORS)
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return ERR;
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if (hue_lightness_saturation == TRUE)
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if (r < 0 || r > 360 || g < 0 || g > 100 || b < 0 || b > 100)
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return ERR;
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if (hue_lightness_saturation == FALSE)
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if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000)
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return ERR;
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tputs(tparm(initialize_color, color, r, g, b), 1, _outc);
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return OK;
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}
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return ERR;
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}
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bool can_change_color()
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{
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return can_change;
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}
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int has_colors()
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{
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return ((orig_pair != NULL) && (max_colors != -1) && (max_pairs != -1)
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&&
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(((set_foreground != NULL) && (set_background != NULL)) ||
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((set_a_foreground != NULL) && (set_a_background != NULL)))
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);
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}
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int color_content(short color, short *r, short *g, short *b)
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{
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return ERR;
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}
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int pair_content(short pair, short *f, short *b)
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{
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if ((pair < 1) || (pair > COLOR_PAIRS))
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return ERR;
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*f = color_pairs[pair] & 0x0f;
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*b = color_pairs[pair] & 0xf0;
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*b >>= 4;
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return OK;
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}
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