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