mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-21 06:53:01 +08:00
40 lines
765 B
C
40 lines
765 B
C
#include "../../../lvgl.h"
|
|
|
|
#if LV_USE_ARC && LV_BUILD_EXAMPLES
|
|
|
|
/**
|
|
* An `lv_timer` to call periodically to set the angles of the arc
|
|
* @param t
|
|
*/
|
|
static void arc_loader(lv_timer_t * t)
|
|
{
|
|
static int16_t a = 270;
|
|
|
|
a+=5;
|
|
|
|
lv_arc_set_end_angle(t->user_data, a);
|
|
|
|
if(a >= 270 + 360) {
|
|
lv_timer_del(t);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create an arc which acts as a loader.
|
|
*/
|
|
void lv_example_arc_2(void)
|
|
{
|
|
/*Create an Arc*/
|
|
lv_obj_t * arc = lv_arc_create(lv_scr_act(), NULL);
|
|
lv_arc_set_bg_angles(arc, 0, 360);
|
|
lv_arc_set_angles(arc, 270, 270);
|
|
lv_obj_align(arc, NULL, LV_ALIGN_CENTER, 0, 0);
|
|
|
|
/* Create an `lv_timer` to update the arc.
|
|
* Store the `arc` in the user data*/
|
|
lv_timer_create(arc_loader, 20, arc);
|
|
}
|
|
|
|
#endif
|