#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