mirror of
https://github.com/suchmememanyskill/TegraExplorer.git
synced 2024-12-29 12:56:02 +00:00
229 lines
6.9 KiB
C
229 lines
6.9 KiB
C
/**
|
|
* @file lv_canvas.h
|
|
*
|
|
*/
|
|
|
|
#ifndef LV_CANVAS_H
|
|
#define LV_CANVAS_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#ifdef LV_CONF_INCLUDE_SIMPLE
|
|
#include "lv_conf.h"
|
|
#else
|
|
#include "../../lv_conf.h"
|
|
#endif
|
|
|
|
#if USE_LV_CANVAS != 0
|
|
|
|
#include "../lv_core/lv_obj.h"
|
|
#include "../lv_objx/lv_img.h"
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
/*Data of canvas*/
|
|
typedef struct {
|
|
lv_img_ext_t img; /*Ext. of ancestor*/
|
|
/*New data for this type */
|
|
lv_img_dsc_t dsc;
|
|
} lv_canvas_ext_t;
|
|
|
|
|
|
/*Styles*/
|
|
enum {
|
|
LV_CANVAS_STYLE_MAIN,
|
|
};
|
|
typedef uint8_t lv_canvas_style_t;
|
|
|
|
|
|
/**********************
|
|
* GLOBAL PROTOTYPES
|
|
**********************/
|
|
|
|
/**
|
|
* Create a canvas object
|
|
* @param par pointer to an object, it will be the parent of the new canvas
|
|
* @param copy pointer to a canvas object, if not NULL then the new object will be copied from it
|
|
* @return pointer to the created canvas
|
|
*/
|
|
lv_obj_t * lv_canvas_create(lv_obj_t * par, const lv_obj_t * copy);
|
|
|
|
/*=====================
|
|
* Setter functions
|
|
*====================*/
|
|
|
|
/**
|
|
* Set a buffer for the canvas.
|
|
* @param buf a buffer where the content of the canvas will be.
|
|
* The required size is (lv_img_color_format_get_px_size(cf) * w * h) / 8)
|
|
* It can be allocated with `lv_mem_alloc()` or
|
|
* it can be statically allocated array (e.g. static lv_color_t buf[100*50]) or
|
|
* it can be an address in RAM or external SRAM
|
|
* @param canvas pointer to a canvas object
|
|
* @param w width of the canvas
|
|
* @param h height of the canvas
|
|
* @param cf color format. The following formats are supported:
|
|
* LV_IMG_CF_TRUE_COLOR, LV_IMG_CF_TRUE_COLOR_CHROMA_KEYED, LV_IMG_CF_INDEXES_1/2/4/8BIT
|
|
*/
|
|
void lv_canvas_set_buffer(lv_obj_t * canvas, void * buf, lv_coord_t w, lv_coord_t h, lv_img_cf_t cf);
|
|
|
|
/**
|
|
* Set the color of a pixel on the canvas
|
|
* @param canvas
|
|
* @param x x coordinate of the point to set
|
|
* @param y x coordinate of the point to set
|
|
* @param c color of the point
|
|
*/
|
|
void lv_canvas_set_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t c);
|
|
|
|
/**
|
|
* Set a style of a canvas.
|
|
* @param canvas pointer to canvas object
|
|
* @param type which style should be set
|
|
* @param style pointer to a style
|
|
*/
|
|
void lv_canvas_set_style(lv_obj_t * canvas, lv_canvas_style_t type, lv_style_t * style);
|
|
|
|
/*=====================
|
|
* Getter functions
|
|
*====================*/
|
|
|
|
/**
|
|
* Get the color of a pixel on the canvas
|
|
* @param canvas
|
|
* @param x x coordinate of the point to set
|
|
* @param y x coordinate of the point to set
|
|
* @return color of the point
|
|
*/
|
|
lv_color_t lv_canvas_get_px(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y);
|
|
|
|
/**
|
|
* Get style of a canvas.
|
|
* @param canvas pointer to canvas object
|
|
* @param type which style should be get
|
|
* @return style pointer to the style
|
|
*/
|
|
lv_style_t * lv_canvas_get_style(const lv_obj_t * canvas, lv_canvas_style_t type);
|
|
|
|
/*=====================
|
|
* Other functions
|
|
*====================*/
|
|
|
|
/**
|
|
* Copy a buffer to the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param to_copy buffer to copy. The color format has to match with the canvas's buffer color format
|
|
* @param w width of the buffer to copy
|
|
* @param h height of the buffer to copy
|
|
* @param x left side of the destination position
|
|
* @param y top side of the destination position
|
|
*/
|
|
void lv_canvas_copy_buf(lv_obj_t * canvas, const void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y);
|
|
|
|
/**
|
|
* Multiply a buffer with the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param to_copy buffer to copy (multiply). LV_IMG_CF_TRUE_COLOR_ALPHA is not supported
|
|
* @param w width of the buffer to copy
|
|
* @param h height of the buffer to copy
|
|
* @param x left side of the destination position
|
|
* @param y top side of the destination position
|
|
*/
|
|
void lv_canvas_mult_buf(lv_obj_t * canvas, void * to_copy, lv_coord_t w, lv_coord_t h, lv_coord_t x, lv_coord_t y);
|
|
|
|
/**
|
|
* Draw circle function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param x0 x coordinate of the circle
|
|
* @param y0 y coordinate of the circle
|
|
* @param radius radius of the circle
|
|
* @param color border color of the circle
|
|
*/
|
|
void lv_canvas_draw_circle(lv_obj_t * canvas, lv_coord_t x0, lv_coord_t y0, lv_coord_t radius, lv_color_t color);
|
|
|
|
/**
|
|
* Draw line function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param point1 start point of the line
|
|
* @param point2 end point of the line
|
|
* @param color color of the line
|
|
*
|
|
* NOTE: The lv_canvas_draw_line function originates from https://github.com/jb55/bresenham-line.c.
|
|
*/
|
|
void lv_canvas_draw_line(lv_obj_t * canvas, lv_point_t point1, lv_point_t point2, lv_color_t color);
|
|
|
|
/**
|
|
* Draw triangle function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param points edge points of the triangle
|
|
* @param color line color of the triangle
|
|
*/
|
|
void lv_canvas_draw_triangle(lv_obj_t * canvas, lv_point_t * points, lv_color_t color);
|
|
|
|
/**
|
|
* Draw rectangle function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param points edge points of the rectangle
|
|
* @param color line color of the rectangle
|
|
*/
|
|
void lv_canvas_draw_rect(lv_obj_t * canvas, lv_point_t * points, lv_color_t color);
|
|
|
|
/**
|
|
* Draw polygon function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param points edge points of the polygon
|
|
* @param size edge count of the polygon
|
|
* @param color line color of the polygon
|
|
*/
|
|
void lv_canvas_draw_polygon(lv_obj_t * canvas, lv_point_t * points, size_t size, lv_color_t color);
|
|
|
|
/**
|
|
* Fill polygon function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param points edge points of the polygon
|
|
* @param size edge count of the polygon
|
|
* @param boundary_color line color of the polygon
|
|
* @param fill_color fill color of the polygon
|
|
*/
|
|
void lv_canvas_fill_polygon(lv_obj_t * canvas, lv_point_t * points, size_t size, lv_color_t boundary_color, lv_color_t fill_color);
|
|
/**
|
|
* Boundary fill function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param x x coordinate of the start position (seed)
|
|
* @param y y coordinate of the start position (seed)
|
|
* @param boundary_color edge/boundary color of the area
|
|
* @param fill_color fill color of the area
|
|
*/
|
|
void lv_canvas_boundary_fill4(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t boundary_color, lv_color_t fill_color);
|
|
|
|
/**
|
|
* Flood fill function of the canvas
|
|
* @param canvas pointer to a canvas object
|
|
* @param x x coordinate of the start position (seed)
|
|
* @param y y coordinate of the start position (seed)
|
|
* @param fill_color fill color of the area
|
|
* @param bg_color background color of the area
|
|
*/
|
|
void lv_canvas_flood_fill(lv_obj_t * canvas, lv_coord_t x, lv_coord_t y, lv_color_t fill_color, lv_color_t bg_color);
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
#endif /*USE_LV_CANVAS*/
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /*LV_CANVAS_H*/
|