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/**
* @file lv_draw_image_private.h
*
*/
#ifndef LV_DRAW_IMAGE_PRIVATE_H
#define LV_DRAW_IMAGE_PRIVATE_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include "lv_draw_image.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* TYPEDEFS
**********************/
struct lv_draw_image_sup_t {
lv_color_t alpha_color;
const lv_color32_t * palette;
uint32_t palette_size : 9;
};
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Can be used by draw units to handle the decoding and
* prepare everything for the actual image rendering
* @param draw_unit pointer to a draw unit
* @param draw_dsc the draw descriptor of the image
* @param coords the absolute coordinates of the image
* @param draw_core_cb a callback to perform the actual rendering
*/
void lv_draw_image_normal_helper(lv_draw_unit_t * draw_unit, const lv_draw_image_dsc_t * draw_dsc,
const lv_area_t * coords, lv_draw_image_core_cb draw_core_cb);
/**
* Can be used by draw units for TILED images to handle the decoding and
* prepare everything for the actual image rendering
* @param draw_unit pointer to a draw unit
* @param draw_dsc the draw descriptor of the image
* @param coords the absolute coordinates of the image
* @param draw_core_cb a callback to perform the actual rendering
*/
void lv_draw_image_tiled_helper(lv_draw_unit_t * draw_unit, const lv_draw_image_dsc_t * draw_dsc,
const lv_area_t * coords, lv_draw_image_core_cb draw_core_cb);
/**
* Get the area of a rectangle if its rotated and scaled
* @param res store the coordinates here
* @param w width of the rectangle to transform
* @param h height of the rectangle to transform
* @param angle angle of rotation
* @param scale_x zoom in x direction, (256 no zoom)
* @param scale_y zoom in y direction, (256 no zoom)
* @param pivot x,y pivot coordinates of rotation
*/
void lv_image_buf_get_transformed_area(lv_area_t * res, int32_t w, int32_t h, int32_t angle,
uint16_t scale_x, uint16_t scale_y, const lv_point_t * pivot);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /*extern "C"*/
#endif
#endif /*LV_DRAW_IMAGE_PRIVATE_H*/
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