158 lines
5.0 KiB
C
158 lines
5.0 KiB
C
/**
|
|
* @file lv_draw.h
|
|
*
|
|
*/
|
|
|
|
#ifndef LV_DRAW_H
|
|
#define LV_DRAW_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#include "../lv_conf_internal.h"
|
|
|
|
#include "../misc/lv_style.h"
|
|
#include "../misc/lv_txt.h"
|
|
#include "lv_img_decoder.h"
|
|
#include "lv_img_cache.h"
|
|
|
|
#include "lv_draw_rect.h"
|
|
#include "lv_draw_label.h"
|
|
#include "lv_draw_img.h"
|
|
#include "lv_draw_line.h"
|
|
#include "lv_draw_triangle.h"
|
|
#include "lv_draw_arc.h"
|
|
#include "lv_draw_mask.h"
|
|
#include "lv_draw_transform.h"
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
|
|
typedef struct {
|
|
void * user_data;
|
|
} lv_draw_mask_t;
|
|
|
|
|
|
typedef struct _lv_draw_ctx_t {
|
|
/**
|
|
* Pointer to a buffer to draw into
|
|
*/
|
|
void * buf;
|
|
|
|
/**
|
|
* The position and size of `buf` (absolute coordinates)
|
|
*/
|
|
lv_area_t * buf_area;
|
|
|
|
/**
|
|
* The current clip area with absolute coordinates, always the same or smaller than `buf_area`
|
|
*/
|
|
const lv_area_t * clip_area;
|
|
|
|
|
|
void (*draw_rect)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * dsc, const lv_area_t * coords);
|
|
|
|
void (*draw_arc)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_arc_dsc_t * dsc, const lv_point_t * center,
|
|
uint16_t radius, uint16_t start_angle, uint16_t end_angle);
|
|
|
|
void (*draw_img_decoded)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * dsc,
|
|
const lv_area_t * coords, const uint8_t * map_p, lv_img_cf_t color_format);
|
|
|
|
lv_res_t (*draw_img)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_img_dsc_t * draw_dsc,
|
|
const lv_area_t * coords, const void * src);
|
|
|
|
void (*draw_letter)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_label_dsc_t * dsc, const lv_point_t * pos_p,
|
|
uint32_t letter);
|
|
|
|
|
|
void (*draw_line)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_line_dsc_t * dsc, const lv_point_t * point1,
|
|
const lv_point_t * point2);
|
|
|
|
|
|
void (*draw_polygon)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc,
|
|
const lv_point_t * points, uint16_t point_cnt);
|
|
|
|
|
|
/**
|
|
* Get an area of a transformed image (zoomed and/or rotated)
|
|
* @param draw_ctx pointer to a draw context
|
|
* @param dest_area get this area of the result image. It assumes that the original image is placed to the 0;0 position.
|
|
* @param src_buf the source image
|
|
* @param src_w width of the source image in [px]
|
|
* @param src_h height of the source image in [px]
|
|
* @param src_stride the stride in [px].
|
|
* @param draw_dsc an `lv_draw_img_dsc_t` descriptor containing the transformation parameters
|
|
* @param cf the color format of `src_buf`
|
|
* @param cbuf place the colors of the pixels on `dest_area` here in RGB format
|
|
* @param abuf place the opacity of the pixels on `dest_area` here
|
|
*/
|
|
void (*draw_transform)(struct _lv_draw_ctx_t * draw_ctx, const lv_area_t * dest_area, const void * src_buf,
|
|
lv_coord_t src_w, lv_coord_t src_h, lv_coord_t src_stride,
|
|
const lv_draw_img_dsc_t * draw_dsc, lv_img_cf_t cf, lv_color_t * cbuf, lv_opa_t * abuf);
|
|
|
|
/**
|
|
* Replace the buffer with a rect without decoration like radius or borders
|
|
*/
|
|
void (*draw_bg)(struct _lv_draw_ctx_t * draw_ctx, const lv_draw_rect_dsc_t * draw_dsc, const lv_area_t * coords);
|
|
|
|
/**
|
|
* Wait until all background operations are finished. (E.g. GPU operations)
|
|
*/
|
|
void (*wait_for_finish)(struct _lv_draw_ctx_t * draw_ctx);
|
|
|
|
/**
|
|
* Copy an area from buffer to an other
|
|
* @param draw_ctx pointer to a draw context
|
|
* @param dest_buf copy the buffer into this buffer
|
|
* @param dest_stride the width of the dest_buf in pixels
|
|
* @param dest_area the destination area
|
|
* @param src_buf copy from this buffer
|
|
* @param src_stride the width of src_buf in pixels
|
|
* @param src_area the source area.
|
|
*
|
|
* @note dest_area and src_area must have the same width and height
|
|
* but can have different x and y position.
|
|
* @note dest_area and src_area must be clipped to the real dimensions of the buffers
|
|
*/
|
|
void (*buffer_copy)(struct _lv_draw_ctx_t * draw_ctx, void * dest_buf, lv_coord_t dest_stride,
|
|
const lv_area_t * dest_area,
|
|
void * src_buf, lv_coord_t src_stride, const lv_area_t * src_area);
|
|
#if LV_USE_USER_DATA
|
|
void * user_data;
|
|
#endif
|
|
|
|
} lv_draw_ctx_t;
|
|
|
|
/**********************
|
|
* GLOBAL PROTOTYPES
|
|
**********************/
|
|
|
|
void lv_draw_init(void);
|
|
|
|
/**********************
|
|
* GLOBAL VARIABLES
|
|
**********************/
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
/**********************
|
|
* POST INCLUDES
|
|
*********************/
|
|
|
|
#ifdef __cplusplus
|
|
} /*extern "C"*/
|
|
#endif
|
|
|
|
#endif /*LV_DRAW_H*/
|