/*
* Copyright (c) 2019 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see .
*/
/**
* @file lv_color.h
*
*/
#ifndef LV_COLOR_H
#define LV_COLOR_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../lv_conf.h"
#endif
/*Error checking*/
#if LV_COLOR_DEPTH == 24
#error "LV_COLOR_DEPTH 24 is deprecated. Use LV_COLOR_DEPTH 32 instead (lv_conf.h)"
#endif
#if LV_COLOR_DEPTH != 32 && LV_COLOR_SCREEN_TRANSP != 0
#error "LV_COLOR_SCREEN_TRANSP requires LV_COLOR_DEPTH == 32. Set it in lv_conf.h"
#endif
#if LV_COLOR_DEPTH != 16 && LV_COLOR_16_SWAP != 0
#error "LV_COLOR_16_SWAP requires LV_COLOR_DEPTH == 16. Set it in lv_conf.h"
#endif
#include
/*********************
* DEFINES
*********************/
#define LV_COLOR_WHITE LV_COLOR_MAKE(0xFF,0xFF,0xFF)
#define LV_COLOR_SILVER LV_COLOR_MAKE(0xC0,0xC0,0xC0)
#define LV_COLOR_GRAY LV_COLOR_MAKE(0x80,0x80,0x80)
#define LV_COLOR_BLACK LV_COLOR_MAKE(0x00,0x00,0x00)
#define LV_COLOR_RED LV_COLOR_MAKE(0xFF,0x00,0x00)
#define LV_COLOR_MAROON LV_COLOR_MAKE(0x80,0x00,0x00)
#define LV_COLOR_YELLOW LV_COLOR_MAKE(0xFF,0xFF,0x00)
#define LV_COLOR_OLIVE LV_COLOR_MAKE(0x80,0x80,0x00)
#define LV_COLOR_LIME LV_COLOR_MAKE(0x00,0xFF,0x00)
#define LV_COLOR_GREEN LV_COLOR_MAKE(0x00,0x80,0x00)
#define LV_COLOR_CYAN LV_COLOR_MAKE(0x00,0xFF,0xFF)
#define LV_COLOR_AQUA LV_COLOR_CYAN
#define LV_COLOR_TEAL LV_COLOR_MAKE(0x00,0x80,0x80)
#define LV_COLOR_BLUE LV_COLOR_MAKE(0x00,0x00,0xFF)
#define LV_COLOR_NAVY LV_COLOR_MAKE(0x00,0x00,0x80)
#define LV_COLOR_MAGENTA LV_COLOR_MAKE(0xFF,0x00,0xFF)
#define LV_COLOR_PURPLE LV_COLOR_MAKE(0x80,0x00,0x80)
#define LV_COLOR_ORANGE LV_COLOR_MAKE(0xFF,0xA5,0x00)
enum {
LV_OPA_TRANSP = 0,
LV_OPA_0 = 0,
LV_OPA_10 = 25,
LV_OPA_20 = 51,
LV_OPA_30 = 76,
LV_OPA_40 = 102,
LV_OPA_50 = 127,
LV_OPA_60 = 153,
LV_OPA_70 = 178,
LV_OPA_80 = 204,
LV_OPA_90 = 229,
LV_OPA_100 = 255,
LV_OPA_COVER = 255,
};
#define LV_OPA_MIN 16 /*Opacities below this will be transparent*/
#define LV_OPA_MAX 251 /*Opacities above this will fully cover*/
#if LV_COLOR_DEPTH == 1
#define LV_COLOR_SIZE 8
#elif LV_COLOR_DEPTH == 8
#define LV_COLOR_SIZE 8
#elif LV_COLOR_DEPTH == 16
#define LV_COLOR_SIZE 16
#elif LV_COLOR_DEPTH == 32
#define LV_COLOR_SIZE 32
#else
#error "Invalid LV_COLOR_DEPTH in lv_conf.h! Set it to 1, 8, 16 or 32!"
#endif
/**********************
* TYPEDEFS
**********************/
typedef union
{
uint8_t blue :1;
uint8_t green :1;
uint8_t red :1;
uint8_t full :1;
} lv_color1_t;
typedef union
{
struct
{
uint8_t blue :2;
uint8_t green :3;
uint8_t red :3;
};
uint8_t full;
} lv_color8_t;
typedef union
{
struct
{
#if LV_COLOR_16_SWAP == 0
uint16_t blue :5;
uint16_t green :6;
uint16_t red :5;
#else
uint16_t green_h :3;
uint16_t red :5;
uint16_t blue :5;
uint16_t green_l :3;
#endif
};
uint16_t full;
} lv_color16_t;
typedef union
{
struct
{
uint8_t blue;
uint8_t green;
uint8_t red;
uint8_t alpha;
};
uint32_t full;
} lv_color32_t;
#if LV_COLOR_DEPTH == 1
typedef uint8_t lv_color_int_t;
typedef lv_color1_t lv_color_t;
#elif LV_COLOR_DEPTH == 8
typedef uint8_t lv_color_int_t;
typedef lv_color8_t lv_color_t;
#elif LV_COLOR_DEPTH == 16
typedef uint16_t lv_color_int_t;
typedef lv_color16_t lv_color_t;
#elif LV_COLOR_DEPTH == 32
typedef uint32_t lv_color_int_t;
typedef lv_color32_t lv_color_t;
#else
#error "Invalid LV_COLOR_DEPTH in lv_conf.h! Set it to 1, 8, 16 or 32!"
#endif
typedef uint8_t lv_opa_t;
typedef struct
{
uint16_t h;
uint8_t s;
uint8_t v;
} lv_color_hsv_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/*In color conversations:
* - When converting to bigger color type the LSB weight of 1 LSB is calculated
* E.g. 16 bit Red has 5 bits
* 8 bit Red has 2 bits
* ----------------------
* 8 bit red LSB = (2^5 - 1) / (2^2 - 1) = 31 / 3 = 10
*
* - When calculating to smaller color type simply shift out the LSBs
* E.g. 8 bit Red has 2 bits
* 16 bit Red has 5 bits
* ----------------------
* Shift right with 5 - 3 = 2
*/
static inline uint8_t lv_color_to1(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
return color.full;
#elif LV_COLOR_DEPTH == 8
if((color.red & 0x4) ||
(color.green & 0x4) ||
(color.blue & 0x2)) {
return 1;
} else {
return 0;
}
#elif LV_COLOR_DEPTH == 16
# if LV_COLOR_16_SWAP == 0
if((color.red & 0x10) ||
(color.green & 0x20) ||
(color.blue & 0x10)) {
return 1;
# else
if((color.red & 0x10) ||
(color.green_h & 0x20) ||
(color.blue & 0x10)) {
return 1;
# endif
} else {
return 0;
}
#elif LV_COLOR_DEPTH == 32
if((color.red & 0x80) ||
(color.green & 0x80) ||
(color.blue & 0x80)) {
return 1;
} else {
return 0;
}
#endif
}
static inline uint8_t lv_color_to8(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0) return 0;
else return 0xFF;
#elif LV_COLOR_DEPTH == 8
return color.full;
#elif LV_COLOR_DEPTH == 16
# if LV_COLOR_16_SWAP == 0
lv_color8_t ret;
ret.red = color.red >> 2; /* 5 - 3 = 2*/
ret.green = color.green >> 3; /* 6 - 3 = 3*/
ret.blue = color.blue >> 3; /* 5 - 2 = 3*/
return ret.full;
# else
lv_color8_t ret;
ret.red = color.red >> 2; /* 5 - 3 = 2*/
ret.green = color.green_h; /* 6 - 3 = 3*/
ret.blue = color.blue >> 3; /* 5 - 2 = 3*/
return ret.full;
# endif
#elif LV_COLOR_DEPTH == 32
lv_color8_t ret;
ret.red = color.red >> 5; /* 8 - 3 = 5*/
ret.green = color.green >> 5; /* 8 - 3 = 5*/
ret.blue = color.blue >> 6; /* 8 - 2 = 6*/
return ret.full;
#endif
}
static inline uint16_t lv_color_to16(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0) return 0;
else return 0xFFFF;
#elif LV_COLOR_DEPTH == 8
lv_color16_t ret;
# if LV_COLOR_16_SWAP == 0
ret.red = color.red * 4; /*(2^5 - 1)/(2^3 - 1) = 31/7 = 4*/
ret.green = color.green * 9; /*(2^6 - 1)/(2^3 - 1) = 63/7 = 9*/
ret.blue = color.blue * 10; /*(2^5 - 1)/(2^2 - 1) = 31/3 = 10*/
# else
ret.red = color.red * 4;
uint8_t g_tmp = color.green * 9;
ret.green_h = (g_tmp & 0x1F) >> 3;
ret.green_l = g_tmp & 0x07;
ret.blue = color.blue * 10;
# endif
return ret.full;
#elif LV_COLOR_DEPTH == 16
return color.full;
#elif LV_COLOR_DEPTH == 32
lv_color16_t ret;
# if LV_COLOR_16_SWAP == 0
ret.red = color.red >> 3; /* 8 - 5 = 3*/
ret.green = color.green >> 2; /* 8 - 6 = 2*/
ret.blue = color.blue >> 3; /* 8 - 5 = 3*/
# else
ret.red = color.red >> 3;
ret.green_h = (color.green & 0xE0) >> 5;
ret.green_l = (color.green & 0x1C) >> 2;
ret.blue = color.blue >> 3;
# endif
return ret.full;
#endif
}
static inline uint32_t lv_color_to32(lv_color_t color)
{
#if LV_COLOR_DEPTH == 1
if(color.full == 0) return 0;
else return 0xFFFFFFFF;
#elif LV_COLOR_DEPTH == 8
lv_color32_t ret;
ret.red = color.red * 36; /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
ret.green = color.green * 36; /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
ret.blue = color.blue * 85; /*(2^8 - 1)/(2^2 - 1) = 255/3 = 85*/
ret.alpha = 0xFF;
return ret.full;
#elif LV_COLOR_DEPTH == 16
# if LV_COLOR_16_SWAP == 0
lv_color32_t ret;
ret.red = color.red * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
ret.green = color.green * 4; /*(2^8 - 1)/(2^6 - 1) = 255/63 = 4*/
ret.blue = color.blue * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
ret.alpha = 0xFF;
return ret.full;
# else
lv_color32_t ret;
ret.red = color.red * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
ret.green = ((color.green_h << 3) + color.green_l) * 4; /*(2^8 - 1)/(2^6 - 1) = 255/63 = 4*/
ret.blue = color.blue * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
ret.alpha = 0xFF;
return ret.full;
# endif
#elif LV_COLOR_DEPTH == 32
return color.full;
#endif
}
static inline lv_color_t lv_color_mix(const lv_color_t c1, const lv_color_t c2, uint8_t mix)
{
lv_color_t ret;
#if LV_COLOR_DEPTH != 1 && LV_COLOR_DEPTH != 32
/*LV_COLOR_DEPTH == 8, 16 or 32*/
ret.red = (uint16_t)((uint16_t) c1.red * mix + (c2.red * (255 - mix))) >> 8;
# if LV_COLOR_DEPTH == 16 && LV_COLOR_16_SWAP
/*If swapped Green is in 2 parts*/
uint16_t g_1 = (c1.green_h << 3) + c1.green_l;
uint16_t g_2 = (c2.green_h << 3) + c2.green_l;
uint16_t g_out = (uint16_t)((uint16_t) g_1 * mix + (g_2 * (255 - mix))) >> 8;
ret.green_h = g_out >> 3;
ret.green_l = g_out & 0x7;
# else
ret.green = (uint16_t)((uint16_t) c1.green * mix + (c2.green * (255 - mix))) >> 8;
# endif
ret.blue = (uint16_t)((uint16_t) c1.blue * mix + (c2.blue * (255 - mix))) >> 8;
#else
# if LV_COLOR_DEPTH == 32
uint32_t rb = (((c1.full & 0x00FF00FF) * mix) + ((c2.full & 0x00FF00FF) * (255 - mix))) >> 8;
uint32_t g = (((((c1.full & 0x0000FF00) >> 8) * mix) + (((c2.full & 0x0000FF00) >> 8) * (255 - mix))) >> 8) << 8;
ret.full = 0xFF000000 | (0x00FF00FF & rb) | (0x0000FF00 & g);
# else
/*LV_COLOR_DEPTH == 1*/
ret.full = mix > LV_OPA_50 ? c1.full : c2.full;
# endif
#endif
return ret;
}
/**
* Get the brightness of a color
* @param color a color
* @return the brightness [0..255]
*/
static inline uint8_t lv_color_brightness(lv_color_t color)
{
lv_color32_t c32;
c32.full = lv_color_to32(color);
uint16_t bright = 3 * c32.red + c32.blue + 4 * c32.green;
return (uint16_t) bright >> 3;
}
/* The most simple macro to create a color from R,G and B values
* The order of bit field is different on Big-endian and Little-endian machines*/
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#if LV_COLOR_DEPTH == 1
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){(b8 >> 7 | g8 >> 7 | r8 >> 7)})
#elif LV_COLOR_DEPTH == 8
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8 >> 6, g8 >> 5, r8 >> 5}})
#elif LV_COLOR_DEPTH == 16
# if LV_COLOR_16_SWAP == 0
# define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8 >> 3, g8 >> 2, r8 >> 3}})
# else
# define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{g8 >> 5, r8 >> 3, b8 >> 3, (g8 >> 2) & 0x7}})
# endif
#elif LV_COLOR_DEPTH == 32
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8, g8, r8, 0xff}}) /*Fix 0xff alpha*/
#endif
#else
#if LV_COLOR_DEPTH == 1
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){(r8 >> 7 | g8 >> 7 | b8 >> 7)})
#elif LV_COLOR_DEPTH == 8
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{r8 >> 6, g8 >> 5, b8 >> 5}})
#elif LV_COLOR_DEPTH == 16
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{r8 >> 3, g8 >> 2, b8 >> 3}})
#elif LV_COLOR_DEPTH == 32
#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{0xff, r8, g8, b8}}) /*Fix 0xff alpha*/
#endif
#endif
#if LV_COLOR_DEPTH == 32 // Concatenate into one 32-bit set.
#define LV_COLOR_HEX(c) ((lv_color_t){.full = ((c) | 0xFF000000)})
#else
#define LV_COLOR_HEX(c) LV_COLOR_MAKE(((uint32_t)((uint32_t)(c) >> 16) & 0xFF), \
((uint32_t)((uint32_t)(c) >> 8) & 0xFF), \
((uint32_t) (c) & 0xFF))
#endif
/*Usage LV_COLOR_HEX3(0x16C) which means LV_COLOR_HEX(0x1166CC)*/
#define LV_COLOR_HEX3(c) LV_COLOR_MAKE(((((c) >> 4) & 0xF0) | (((c) >> 8) & 0xF)), \
((uint32_t)((c) & 0xF0) | (((c) & 0xF0) >> 4)), \
((uint32_t)((c) & 0xF) | (((c) & 0xF) << 4)))
/**
* Convert a HSV color to RGB
* @param h hue [0..359]
* @param s saturation [0..100]
* @param v value [0..100]
* @return the given RGB color in RGB (with LV_COLOR_DEPTH depth)
*/
lv_color_t lv_color_hsv_to_rgb(uint16_t hue, uint8_t sat, uint8_t val);
/**
* Convert an RGB color to HSV
* @param r red
* @param g green
* @param b blue
* @return the given RGB color n HSV
*/
lv_color_hsv_t lv_color_rgb_to_hsv(uint8_t r, uint8_t g, uint8_t b);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*USE_COLOR*/