9760d57540
Signed-off-by: zhangjipeng <zhangjipeng@xiaomi.com> Co-authored-by: zhangjipeng <zhangjipeng@xiaomi.com> Co-authored-by: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
130 lines
3.9 KiB
C
130 lines
3.9 KiB
C
/**
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* @file lv_draw_image.h
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*
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*/
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#ifndef LV_DRAW_IMAGE_H
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#define LV_DRAW_IMAGE_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.h"
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#include "lv_image_decoder.h"
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#include "lv_draw_buf.h"
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#include "../misc/lv_style.h"
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/*********************
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* DEFINES
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*********************/
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/**********************
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* MACROS
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**********************/
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struct _lv_draw_image_dsc_t {
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lv_draw_dsc_base_t base;
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const void * src;
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lv_image_header_t header;
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int32_t rotation;
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int32_t scale_x;
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int32_t scale_y;
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int32_t skew_x;
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int32_t skew_y;
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lv_point_t pivot;
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lv_color_t recolor;
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lv_opa_t recolor_opa;
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lv_opa_t opa;
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lv_blend_mode_t blend_mode : 3;
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uint16_t antialias : 1;
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uint16_t tile : 1;
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lv_draw_image_sup_t * sup;
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/** Used to indicate the entire original, non-clipped area where the image is to be drawn.
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* This is important for:
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* 1. Layer rendering, where it might happen that only a smaller area of the layer is rendered.
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* 2. Tiled images, where the target draw area is larger than the image to be tiled.
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*/
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lv_area_t image_area;
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int32_t clip_radius;
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const lv_image_dsc_t * bitmap_mask_src;
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};
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/**
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* PErform the actual rendering of a decoded image
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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 decoder_dsc pointer to the decoded image's descriptor
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* @param sup supplementary data
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* @param img_coords the absolute coordinates of the image
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* @param clipped_img_area the absolute clip coordinates
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*/
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typedef void (*lv_draw_image_core_cb)(lv_draw_task_t * t, const lv_draw_image_dsc_t * draw_dsc,
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const lv_image_decoder_dsc_t * decoder_dsc, lv_draw_image_sup_t * sup,
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const lv_area_t * img_coords, const lv_area_t * clipped_img_area);
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Initialize an image draw descriptor.
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* @param dsc pointer to a draw descriptor
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*/
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void lv_draw_image_dsc_init(lv_draw_image_dsc_t * dsc);
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/**
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* Try to get an image draw descriptor from a draw task.
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* @param task draw task
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* @return the task's draw descriptor or NULL if the task is not of type LV_DRAW_TASK_TYPE_IMAGE
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*/
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lv_draw_image_dsc_t * lv_draw_task_get_image_dsc(lv_draw_task_t * task);
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/**
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* Create an image draw task
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* @param layer pointer to a layer
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* @param dsc pointer to an initialized draw descriptor
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* @param coords the coordinates of the image
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* @note `coords` can be small than the real image area
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* (if only a part of the image is rendered)
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* or can be larger (in case of tiled images). .
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*/
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void lv_draw_image(lv_layer_t * layer, const lv_draw_image_dsc_t * dsc, const lv_area_t * coords);
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/**
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* Create a draw task to blend a layer to another layer
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* @param layer pointer to a layer
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* @param dsc pointer to an initialized draw descriptor
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* @param coords the coordinates of the layer.
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* @note `coords` can be small than the total widget area from which the layer is created
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* (if only a part of the widget was rendered to a layer)
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*/
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void lv_draw_layer(lv_layer_t * layer, const lv_draw_image_dsc_t * dsc, const lv_area_t * coords);
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/**
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* Get the type of an image source
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* @param src pointer to an image source:
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* - pointer to an 'lv_image_t' variable (image stored internally and compiled into the code)
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* - a path to a file (e.g. "S:/folder/image.bin")
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* - or a symbol (e.g. LV_SYMBOL_CLOSE)
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* @return type of the image source LV_IMAGE_SRC_VARIABLE/FILE/SYMBOL/UNKNOWN
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*/
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lv_image_src_t lv_image_src_get_type(const void * src);
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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_H*/
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