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Alejandro Guerrero 2026-09-27 17:21:39 +02:00
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60
libraries/lvgl/examples/widgets/meter/lv_example_meter_2.c Normal file
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#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