1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/**
* @file lv_draw.h
*
*/
#ifndef LV_DRAW_H
#define LV_DRAW_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../../lv_conf.h"
#endif
#include "../lv_core/lv_style.h"
#include "../lv_misc/lv_txt.h"
#include "lv_img_decoder.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Give a buffer with the given to use during drawing.
* Be careful to not use the buffer while other processes are using it.
* @param size the required size
*/
void * lv_draw_get_buf(uint32_t size);
/**
* Free the draw buffer
*/
void lv_draw_free_buf(void);
#if LV_ANTIALIAS
/**
* Get the opacity of a pixel based it's position in a line segment
* @param seg segment length
* @param px_id position of of a pixel which opacity should be get [0..seg-1]
* @param base_opa the base opacity
* @return the opacity of the given pixel
*/
lv_opa_t lv_draw_aa_get_opa(lv_coord_t seg, lv_coord_t px_id, lv_opa_t base_opa);
/**
* Add a vertical anti-aliasing segment (pixels with decreasing opacity)
* @param x start point x coordinate
* @param y start point y coordinate
* @param length length of segment (negative value to start from 0 opacity)
* @param mask draw only in this area
* @param color color of pixels
* @param opa maximum opacity
*/
void lv_draw_aa_ver_seg(lv_coord_t x, lv_coord_t y, lv_coord_t length, const lv_area_t * mask, lv_color_t color,
lv_opa_t opa);
/**
* Add a horizontal anti-aliasing segment (pixels with decreasing opacity)
* @param x start point x coordinate
* @param y start point y coordinate
* @param length length of segment (negative value to start from 0 opacity)
* @param mask draw only in this area
* @param color color of pixels
* @param opa maximum opacity
*/
void lv_draw_aa_hor_seg(lv_coord_t x, lv_coord_t y, lv_coord_t length, const lv_area_t * mask, lv_color_t color,
lv_opa_t opa);
#endif
/**********************
* GLOBAL VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* POST INCLUDES
*********************/
#include "lv_draw_basic.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"
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*LV_DRAW_H*/
|
