lvgl_cpp/lvgl/extra/widgets/spinner/lv_spinner.c

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2023-03-14 11:57:25 +00:00
/**
* @file lv_spinner.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_spinner.h"
#if LV_USE_SPINNER
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_spinner_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void arc_anim_start_angle(void * obj, int32_t v);
static void arc_anim_end_angle(void * obj, int32_t v);
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_spinner_class = {
.base_class = &lv_arc_class,
.constructor_cb = lv_spinner_constructor
};
static uint32_t time_param;
static uint32_t arc_length_param;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a spinner object
* @param parent pointer to an object, it will be the parent of the new spinner
* @return pointer to the created spinner
*/
lv_obj_t * lv_spinner_create(lv_obj_t * parent, uint32_t time, uint32_t arc_length)
{
time_param = time;
arc_length_param = arc_length;
lv_obj_t * obj = lv_obj_class_create_obj(&lv_spinner_class, parent);
lv_obj_class_init_obj(obj);
return obj;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_spinner_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_TRACE_OBJ_CREATE("begin");
LV_UNUSED(class_p);
lv_obj_clear_flag(obj, LV_OBJ_FLAG_CLICKABLE);
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, obj);
lv_anim_set_exec_cb(&a, arc_anim_end_angle);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
lv_anim_set_time(&a, time_param);
lv_anim_set_values(&a, arc_length_param, 360 + arc_length_param);
lv_anim_start(&a);
lv_anim_set_path_cb(&a, lv_anim_path_ease_in_out);
lv_anim_set_values(&a, 0, 360);
lv_anim_set_exec_cb(&a, arc_anim_start_angle);
lv_anim_start(&a);
lv_arc_set_bg_angles(obj, 0, 360);
lv_arc_set_rotation(obj, 270);
}
static void arc_anim_start_angle(void * obj, int32_t v)
{
lv_arc_set_start_angle(obj, (uint16_t) v);
}
static void arc_anim_end_angle(void * obj, int32_t v)
{
lv_arc_set_end_angle(obj, (uint16_t) v);
}
#endif /*LV_USE_SPINNER*/