mirror of
https://github.com/lvgl/lvgl.git
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312 lines
8.1 KiB
C
312 lines
8.1 KiB
C
/**
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* @file lv_color.h
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*
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*/
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#ifndef LV_COLOR_H
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#define LV_COLOR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include "../../lv_conf.h"
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#include <stdint.h>
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/*********************
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* DEFINES
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*********************/
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#define LV_COLOR_BLACK LV_COLOR_MAKE(0x00,0x00,0x00)
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#define LV_COLOR_WHITE LV_COLOR_MAKE(0xFF,0xFF,0xFF)
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#define LV_COLOR_RED LV_COLOR_MAKE(0xFF,0x00,0x00)
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#define LV_COLOR_LIME LV_COLOR_MAKE(0x00,0xFF,0x00)
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#define LV_COLOR_BLUE LV_COLOR_MAKE(0x00,0x00,0xFF)
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#define LV_COLOR_YELLOW LV_COLOR_MAKE(0xFF,0xFF,0x00)
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#define LV_COLOR_CYAN LV_COLOR_MAKE(0x00,0xFF,0xFF)
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#define LV_COLOR_AQUA LV_COLOR_CYAN
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#define LV_COLOR_MAGENTA LV_COLOR_MAKE(0xFF,0x00,0xFF)
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#define LV_COLOR_SILVER LV_COLOR_MAKE(0xC0,0xC0,0xC0)
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#define LV_COLOR_GRAY LV_COLOR_MAKE(0x80,0x80,0x80)
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#define LV_COLOR_MARRON LV_COLOR_MAKE(0x80,0x00,0x00)
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#define LV_COLOR_OLIVE LV_COLOR_MAKE(0x80,0x80,0x00)
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#define LV_COLOR_GREEN LV_COLOR_MAKE(0x00,0x80,0x00)
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#define LV_COLOR_PURPLE LV_COLOR_MAKE(0x80,0x00,0x80)
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#define LV_COLOR_TEAL LV_COLOR_MAKE(0x00,0x80,0x80)
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#define LV_COLOR_NAVY LV_COLOR_MAKE(0x00,0x00,0x80)
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#define LV_COLOR_ORANGE LV_COLOR_MAKE(0xFF,0xA5,0x00)
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#define LV_OPA_TRANSP 0
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#define LV_OPA_0 0
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#define LV_OPA_10 25
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#define LV_OPA_20 51
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#define LV_OPA_30 76
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#define LV_OPA_40 102
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#define LV_OPA_50 127
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#define LV_OPA_60 153
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#define LV_OPA_70 178
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#define LV_OPA_80 204
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#define LV_OPA_90 229
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#define LV_OPA_100 255
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#define LV_OPA_COVER 255
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/**********************
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* TYPEDEFS
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**********************/
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typedef union
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{
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uint8_t blue :1;
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uint8_t green :1;
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uint8_t red :1;
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uint8_t full :1;
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}lv_color1_t;
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typedef union
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{
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struct
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{
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uint8_t blue :2;
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uint8_t green :3;
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uint8_t red :3;
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};
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uint8_t full;
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}lv_color8_t;
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typedef union
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{
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struct
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{
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uint16_t blue :5;
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uint16_t green :6;
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uint16_t red :5;
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};
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uint16_t full;
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}lv_color16_t;
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typedef union
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{
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struct
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{
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uint8_t blue;
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uint8_t green;
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uint8_t red;
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};
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uint32_t full;
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}lv_color24_t;
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#if LV_COLOR_DEPTH == 1
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typedef uint8_t lv_color_int_t;
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typedef lv_color1_t lv_color_t;
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#elif LV_COLOR_DEPTH == 8
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typedef uint8_t lv_color_int_t;
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typedef lv_color8_t lv_color_t;
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#elif LV_COLOR_DEPTH == 16
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typedef uint16_t lv_color_int_t;
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typedef lv_color16_t lv_color_t;
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#elif LV_COLOR_DEPTH == 24
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typedef uint32_t lv_color_int_t;
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typedef lv_color24_t lv_color_t;
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#else
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#error "Invalid LV_COLOR_DEPTH in misc_conf.h! Set it to 1, 8, 16 or 24!"
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#endif
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typedef uint8_t lv_opa_t;
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typedef struct
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{
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uint16_t h;
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uint8_t s;
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uint8_t v;
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} lv_color_hsv_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/*In color conversations:
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* - When converting to bigger color type the LSB weight of 1 LSB is calculated
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* E.g. 16 bit Red has 5 bits
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* 8 bit Red has 2 bits
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* ----------------------
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* 8 bit red LSB = (2^5 - 1) / (2^2 - 1) = 31 / 3 = 10
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*
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* - When calculating to smaller color type simply shift out the LSBs
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* E.g. 8 bit Red has 2 bits
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* 16 bit Red has 5 bits
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* ----------------------
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* Shift right with 5 - 3 = 2
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*/
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static inline uint8_t lv_color_to1(lv_color_t color)
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{
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#if LV_COLOR_DEPTH == 1
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return color.full;
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#elif LV_COLOR_DEPTH == 8
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if((color.red & 0b100) ||
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(color.green & 0b100) ||
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(color.blue & 0b10)) {
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return 1;
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} else {
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return 0;
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}
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#elif LV_COLOR_DEPTH == 16
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if((color.red & 0b10000) ||
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(color.green & 0b100000) ||
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(color.blue & 0b10000)) {
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return 1;
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} else {
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return 0;
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}
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#elif LV_COLOR_DEPTH == 24
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if((color.red & 0x80) ||
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(color.green & 0x80) ||
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(color.blue & 0x80)) {
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return 1;
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} else {
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return 0;
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}
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#endif
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}
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static inline uint8_t lv_color_to8(lv_color_t color)
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{
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#if LV_COLOR_DEPTH == 1
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if(color.full == 0) return 0;
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else return 0xFF;
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#elif LV_COLOR_DEPTH == 8
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return color.full;
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#elif LV_COLOR_DEPTH == 16
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lv_color8_t ret;
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ret.red = color.red >> 2; /* 5 - 3 = 2*/
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ret.green = color.green >> 3; /* 6 - 3 = 3*/
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ret.blue = color.blue >> 3; /* 5 - 2 = 3*/
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return ret.full;
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#elif LV_COLOR_DEPTH == 24
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lv_color8_t ret;
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ret.red = color.red >> 5; /* 8 - 3 = 5*/
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ret.green = color.green >> 5; /* 8 - 3 = 5*/
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ret.blue = color.blue >> 6; /* 8 - 2 = 6*/
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return ret.full;
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#endif
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}
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static inline uint16_t lv_color_to16(lv_color_t color)
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{
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#if LV_COLOR_DEPTH == 1
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if(color.full == 0) return 0;
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else return 0xFFFF;
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#elif LV_COLOR_DEPTH == 8
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lv_color16_t ret;
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ret.red = color.red * 4; /*(2^5 - 1)/(2^3 - 1) = 31/7 = 4*/
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ret.green = color.green * 9; /*(2^6 - 1)/(2^3 - 1) = 63/7 = 9*/
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ret.blue = color.blue * 10; /*(2^5 - 1)/(2^2 - 1) = 31/3 = 10*/
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return ret.full;
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#elif LV_COLOR_DEPTH == 16
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return color.full;
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#elif LV_COLOR_DEPTH == 24
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lv_color16_t ret;
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ret.red = color.red >> 3; /* 8 - 5 = 3*/
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ret.green = color.green >> 2; /* 8 - 6 = 2*/
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ret.blue = color.blue >> 3; /* 8 - 5 = 3*/
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return ret.full;
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#endif
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}
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static inline uint32_t lv_color_to24(lv_color_t color)
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{
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#if LV_COLOR_DEPTH == 1
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if(color.full == 0) return 0;
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else return 0xFFFFFF;
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#elif LV_COLOR_DEPTH == 8
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lv_color24_t ret;
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ret.red = color.red * 36; /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
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ret.green = color.green * 36; /*(2^8 - 1)/(2^3 - 1) = 255/7 = 36*/
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ret.blue = color.blue * 85; /*(2^8 - 1)/(2^2 - 1) = 255/3 = 85*/
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return ret.full;
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#elif LV_COLOR_DEPTH == 16
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lv_color24_t ret;
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ret.red = color.red * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
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ret.green = color.green * 4; /*(2^8 - 1)/(2^6 - 1) = 255/63 = 4*/
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ret.blue = color.blue * 8; /*(2^8 - 1)/(2^5 - 1) = 255/31 = 8*/
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return ret.full;
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#elif LV_COLOR_DEPTH == 24
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return color.full;
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#endif
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}
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static inline lv_color_t lv_color_mix(lv_color_t c1, lv_color_t c2, uint8_t mix)
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{
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lv_color_t ret;
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ret.red = (uint16_t)((uint16_t) c1.red * mix + (c2.red * (255 - mix))) >> 8;
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ret.green = (uint16_t)((uint16_t) c1.green * mix + (c2.green * (255 - mix))) >> 8;
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ret.blue = (uint16_t)((uint16_t) c1.blue * mix + (c2.blue * (255 - mix))) >> 8;
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return ret;
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}
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/**
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* Get the brightness of a color
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* @param color a color
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* @return the brightness [0..255]
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*/
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static inline uint8_t lv_color_brightness(lv_color_t color)
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{
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lv_color24_t c24;
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c24.full = lv_color_to24(color);
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uint16_t bright = 3 * c24.red + c24.blue + 4 * c24.green;
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return (uint16_t) bright >> 3;
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}
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#if LV_COLOR_DEPTH == 1
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#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){b8 >> 7 | g8 >> 7 | r8 >> 7})
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#elif LV_COLOR_DEPTH == 8
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#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8 >> 6, g8 >> 5, r8 >> 5}})
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#elif LV_COLOR_DEPTH == 16
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#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8 >> 3, g8 >> 2, r8 >> 3}})
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#elif LV_COLOR_DEPTH == 24
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#define LV_COLOR_MAKE(r8, g8, b8) ((lv_color_t){{b8, g8, r8}})
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#endif
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#define LV_COLOR_HEX(c) LV_COLOR_MAKE(((uint32_t)((uint32_t)c >> 16) & 0xFF), \
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((uint32_t)((uint32_t)c >> 8) & 0xFF), \
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((uint32_t) c & 0xFF))
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/*Usage LV_COLOR_HEX3(0x16C) which means LV_COLOR_HEX(0x1166CC)*/
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#define LV_COLOR_HEX3(c) LV_COLOR_MAKE((((c >> 4) & 0xF0) | ((c >> 8) & 0xF)), \
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((uint32_t)(c & 0xF0) | ((c & 0xF0) >> 4)), \
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((uint32_t)(c & 0xF) | ((c & 0xF) << 4)))
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/**
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* Convert a HSV color to RGB
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* @param h hue [0..359]
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* @param s saturation [0..100]
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* @param v value [0..100]
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* @return the given RGB color in RGB (with LV_COLOR_DEPTH depth)
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*/
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lv_color_t lv_color_hsv_to_rgb(uint16_t h, uint8_t s, uint8_t v);
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/**
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* Convert an RGB color to HSV
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* @param r red
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* @param g green
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* @param b blue
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* @return the given RGB color n HSV
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*/
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lv_color_hsv_t lv_color_rgb_to_hsv(uint8_t r, uint8_t g, uint8_t b);
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/**********************
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* MACROS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /*USE_COLOR*/
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