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/**
* @file lv_color_op.h
*
*/
#ifndef LV_COLOR_OP_H
#define LV_COLOR_OP_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_assert.h"
#include "lv_math.h"
#include "lv_color.h"
#include "lv_types.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
struct lv_color_filter_dsc_t;
typedef lv_color_t (*lv_color_filter_cb_t)(const struct lv_color_filter_dsc_t *, lv_color_t, lv_opa_t);
struct lv_color_filter_dsc_t {
lv_color_filter_cb_t filter_cb;
void * user_data;
};
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Mix two colors with a given ratio.
* @param c1 the first color to mix (usually the foreground)
* @param c2 the second color to mix (usually the background)
* @param mix The ratio of the colors. 0: full `c2`, 255: full `c1`, 127: half `c1` and half`c2`
* @return the mixed color
*/
lv_color_t LV_ATTRIBUTE_FAST_MEM lv_color_mix(lv_color_t c1, lv_color_t c2, uint8_t mix);
/**
*
* @param fg
* @param bg
* @return
* @note Use bg.alpha in the return value
* @note Use fg.alpha as mix ratio
*/
lv_color32_t lv_color_mix32(lv_color32_t fg, lv_color32_t bg);
/**
* Get the brightness of a color
* @param c a color
* @return brightness in range [0..255]
*/
uint8_t lv_color_brightness(lv_color_t c);
void lv_color_filter_dsc_init(lv_color_filter_dsc_t * dsc, lv_color_filter_cb_t cb);
/**********************
* PREDEFINED COLORS
**********************/
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_COLOR_H*/
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