#include "../../lv_examples.h" #if LV_USE_METER && LV_BUILD_EXAMPLES static lv_obj_t * meter; static void set_value(void * indic, int32_t v) { lv_meter_set_indicator_end_value(meter, indic, v); } /** * A meter with multiple arcs */ void lv_example_meter_2(void) { meter = lv_meter_create(lv_scr_act()); lv_obj_center(meter); lv_obj_set_size(meter, 200, 200); /*Remove the circle from the middle*/ lv_obj_remove_style(meter, NULL, LV_PART_INDICATOR); /*Add a scale first*/ lv_meter_scale_t * scale = lv_meter_add_scale(meter); lv_meter_set_scale_ticks(meter, scale, 11, 2, 10, lv_palette_main(LV_PALETTE_GREY)); lv_meter_set_scale_major_ticks(meter, scale, 1, 2, 30, lv_color_hex3(0xeee), 15); lv_meter_set_scale_range(meter, scale, 0, 100, 270, 90); /*Add a three arc indicator*/ lv_meter_indicator_t * indic1 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_RED), 0); lv_meter_indicator_t * indic2 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_GREEN), -10); lv_meter_indicator_t * indic3 = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_BLUE), -20); /*Create an animation to set the value*/ lv_anim_t a; lv_anim_init(&a); lv_anim_set_exec_cb(&a, set_value); lv_anim_set_values(&a, 0, 100); lv_anim_set_repeat_delay(&a, 100); lv_anim_set_playback_delay(&a, 100); lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE); lv_anim_set_time(&a, 2000); lv_anim_set_playback_time(&a, 500); lv_anim_set_var(&a, indic1); lv_anim_start(&a); lv_anim_set_time(&a, 1000); lv_anim_set_playback_time(&a, 1000); lv_anim_set_var(&a, indic2); lv_anim_start(&a); lv_anim_set_time(&a, 1000); lv_anim_set_playback_time(&a, 2000); lv_anim_set_var(&a, indic3); lv_anim_start(&a); } #endif