1 /**
2  * @file lv_qrcode.h
3  *
4  */
5 
6 #ifndef LV_QRCODE_H
7 #define LV_QRCODE_H
8 
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12 
13 /*********************
14  *      INCLUDES
15  *********************/
16 #include "../../lv_conf_internal.h"
17 #include "../../misc/lv_color.h"
18 #include "../../misc/lv_types.h"
19 #include "../../widgets/canvas/lv_canvas.h"
20 #include LV_STDBOOL_INCLUDE
21 #include LV_STDINT_INCLUDE
22 #if LV_USE_QRCODE
23 
24 /*********************
25  *      DEFINES
26  *********************/
27 
28 /**********************
29  *      TYPEDEFS
30  **********************/
31 
32 LV_ATTRIBUTE_EXTERN_DATA extern const lv_obj_class_t lv_qrcode_class;
33 
34 /**********************
35  * GLOBAL PROTOTYPES
36  **********************/
37 
38 /**
39  * Create an empty QR code (an `lv_canvas`) object.
40  * @param parent point to an object where to create the QR code
41  * @return pointer to the created QR code object
42  */
43 lv_obj_t * lv_qrcode_create(lv_obj_t * parent);
44 
45 /**
46  * Set QR code size.
47  * @param obj pointer to a QR code object
48  * @param size width and height of the QR code
49  */
50 void lv_qrcode_set_size(lv_obj_t * obj, int32_t size);
51 
52 /**
53  * Set QR code dark color.
54  * @param obj pointer to a QR code object
55  * @param color dark color of the QR code
56  */
57 void lv_qrcode_set_dark_color(lv_obj_t * obj, lv_color_t color);
58 
59 /**
60  * Set QR code light color.
61  * @param obj pointer to a QR code object
62  * @param color light color of the QR code
63  */
64 void lv_qrcode_set_light_color(lv_obj_t * obj, lv_color_t color);
65 
66 /**
67  * Set the data of a QR code object
68  * @param obj pointer to a QR code object
69  * @param data data to display
70  * @param data_len length of data in bytes
71  * @return LV_RESULT_OK: if no error; LV_RESULT_INVALID: on error
72  */
73 lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_len);
74 
75 /**********************
76  *      MACROS
77  **********************/
78 
79 #endif /*LV_USE_QRCODE*/
80 
81 #ifdef __cplusplus
82 } /* extern "C" */
83 #endif
84 
85 #endif /*LV_QRCODE_H*/
86