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/***************************************************************************
c_color.h
(c) 2000-2017 Benoît Minisini <benoit.minisini@gambas-basic.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
***************************************************************************/
#ifndef __C_COLOR_H
#define __C_COLOR_H
#include "main.h"
#ifndef __C_COLOR_C
extern GB_DESC ColorDesc[];
extern GB_DESC ColorInfoDesc[];
#else
#define THIS ((CCOLOR *)_object)
enum { CC_R, CC_G, CC_B, CC_A, CC_H, CC_S, CC_V };
#endif
typedef
struct {
GB_BASE ob;
int r, g, b, a;
}
CCOLOR;
void COLOR_rgb_to_hsv(int r, int g, int b, int *H, int *S, int *V);
void COLOR_hsv_to_rgb(int h, int s, int v, int *R, int *G, int *B);
GB_COLOR COLOR_merge(GB_COLOR col1, GB_COLOR col2, double weight);
GB_COLOR COLOR_lighter(GB_COLOR color);
GB_COLOR COLOR_darker(GB_COLOR color);
int COLOR_get_luminance(GB_COLOR color);
GB_COLOR COLOR_set_luminance(GB_COLOR color, int l);
int COLOR_invert_luminance(int l);
GB_COLOR COLOR_invert(GB_COLOR color, bool keep_hue);
#endif
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