acid-drop/lib/lvgl/examples/widgets/arc/lv_example_arc_2.c

38 lines
913 B
C

#include "../../lv_examples.h"
#if LV_USE_ARC && LV_BUILD_EXAMPLES
static void set_angle(void * obj, int32_t v)
{
lv_arc_set_value(obj, v);
}
/**
* 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());
lv_arc_set_rotation(arc, 270);
lv_arc_set_bg_angles(arc, 0, 360);
lv_obj_remove_style(arc, NULL, LV_PART_KNOB); /*Be sure the knob is not displayed*/
lv_obj_clear_flag(arc, LV_OBJ_FLAG_CLICKABLE); /*To not allow adjusting by click*/
lv_obj_center(arc);
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_var(&a, arc);
lv_anim_set_exec_cb(&a, set_angle);
lv_anim_set_time(&a, 1000);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE); /*Just for the demo*/
lv_anim_set_repeat_delay(&a, 500);
lv_anim_set_values(&a, 0, 100);
lv_anim_start(&a);
}
#endif