color.h

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#ifndef __COLOR_H__
#define __COLOR_H__
 
#include <stdint.h>
#include <_xeneva.h>
#include "chitralekha.h"
 
#ifdef __cplusplus
XE_EXTERN{
#endif
 
#define WHITE   0xFFFFFFFF
#define SILVER  0xFFC0C0C0
#define GRAY    0xFF808080
#define BLACK   0xFF000000
#define RED     0xFFFF0000
#define MAROON  0xFF800000
#define YELLOW  0xFFFFFF00
#define OLIVE   0xFF808000
#define LIME    0xFF00FF00
#define GREEN   0xFF008000
#define AQUA    0xFF00FFFF
#define TEAL    0xFF008080
#define BLUE    0xFF0000FF
#define NAVY    0xFF000080
#define FUCHSIA 0xFFFF00FF
#define PURPLE  0xFF800080
 
#define DARKRED     0xFF8B0000
#define BROWN       0xFFA52A2A
#define FIREBRICK   0xFFB22222
#define CRIMSON     0xFFDC143C
#define TOMATO      0xFFFF6347
#define CORAL       0xFFFF7F50
#define INDIANRED   0xFFCD5C5C
#define LIGHTCORAL  0xFFF08080
#define DARKSALMON  0xFFE9967A
#define SALMON      0xFFFA8072
#define ORANGERED   0xFFFF4500
#define DARKORANGE  0xFFFF8C00
#define ORANGE      0xFFFFA500
#define GOLD        0xFFFFD700
#define DARKGOLDENROD 0xFFB8860B
#define GOLDENROD     0xFFDAA520
#define PALEGOLDENROD 0xFFEEE8AA
#define DARKKHAKI     0xFFBDB76B
#define KHAKI         0xFFF0E68C
#define DARKGREEN     0xFF006400
#define PALEGREEN     0xFF98FB98
#define LIGHTSILVER   0xFFD9D9D9
#define DESKBLUE      0xFF5B7492
#define MENUCLICKBLUE 0xFF6A7298
#define TITLEBAR_DARK  0xFF2F2F2F
#define LIGHTBLACK    0xFF3E3E3E
#define MAGENTA       0xFFFF00FF
#define CYAN          0xFF00FFFF
 
#define SET_ALPHA(color,alpha) (((color << 8) >> 8) | ((alpha << 24) & 0xff000000))
 
#define _RED(color)  ((color & 0x00FF0000) / 0x10000)
#define _GRE(color)  ((color & 0x0000FF00) / 0x100)
#define _BLU(color)  ((color & 0x000000FF) / 0x1)
#define _ALP(color)  ((color & 0xFF000000) / 0x1000000)
 
#define GET_ALPHA(color)  ((color >> 24) & 0x000000FF)
#define GET_RED(color)  ((color >> 16) & 0x000000FF)
#define GET_GREEN(color) ((color >> 8) & 0x000000FF)
#define GET_BLUE(color)  ((color >> 0) & 0x000000FF)
 
 
    /*
     * ChColorAlphaBlend -- blend two color
     * @param color1 -- color 1
     * @param color2 -- color 2
     * @param opacity -- opacity of alpha
     */
    XE_LIB uint32_t ChColorAlphaBlend(uint32_t oldColor, uint32_t color2, double opacity);
 
    /*
     * ChColorAlphaBlend2 -- blend two color
     * @param color1 -- self explanatory
     * @param color2 -- self explanatory
     */
    XE_LIB uint32_t ChColorAlphaBlend2(uint32_t color1, uint32_t color2);
 
    /*
    * ChColorDrawVerticalGradient -- draws vertical linear gradient
    * @param canv -- Pointer to canvas
    * @param x -- X coord of the rect
    * @param y -- Y coord of the rect
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    * @param color1 -- starting color
    * @param color2 -- end color
    */
    XE_LIB void ChColorDrawVerticalGradient(ChCanvas* canv, int x, int y, int w, int h, uint32_t color1, uint32_t color2);
 
    extern uint32_t make_col(uint8_t red, uint8_t green, uint8_t blue);
    extern uint32_t make_col_a(uint8_t red, uint8_t green, uint8_t blue, uint8_t a);
 
    /*
    * ChColorDrawHorizontalGradient -- draws horizontal linear gradient
    * @param canv -- Pointer to canvas
    * @param x -- X coord of the rect
    * @param y -- Y coord of the rect
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    * @param color1 -- starting color
    * @param color2 -- end color
    */
    XE_LIB void ChColorDrawHorizontalGradient(ChCanvas *canv, int x, int y, int w, int h, uint32_t color1, uint32_t color2);
 
    /*
    * ChColorDrawVerticalGradient -- draws vertical linear gradient
    * @param canv -- Pointer to canvas
    * @param x -- X coord of the rect
    * @param y -- Y coord of the rect
    * @param w -- Width of the rect
    * @param h -- Height of the rect
    * @param color1 -- starting color
    * @param color2 -- end color
    */
    XE_LIB void ChColorDrawVerticalGradient(ChCanvas *canv, int x, int y, int w, int h, uint32_t color1, uint32_t color2);
 
    XE_LIB double clamp(double x, double upper, double lower);
 
    /*
     * ChColorRGBAtoBGRA -- convert RGBA pixels to BGRA888
     * @param col -- Color to convert
     */
    XE_LIB uint32_t ChColorRGBAtoBGRA(uint32_t col);
 
    /*
     * ChDrawPixelRAW -- draws a pixel to canvas buffer
     * @param canvas -- pointer to canvas
     * @param x -- x position
     * @param y -- y position
     * @param color -- color of the pixel
     */
    XE_LIB void ChDrawPixelRAW(ChCanvas* canvas, int x, int y, uint32_t color);
 
#ifdef __cplusplus
}
#endif
 
#endif