67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
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#include "../../lv_examples.h"
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#if LV_USE_METER && LV_BUILD_EXAMPLES
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static lv_obj_t * meter;
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static void set_value(void * indic, int32_t v)
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{
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lv_meter_set_indicator_value(meter, indic, v);
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}
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/**
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* A simple meter
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*/
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void lv_example_meter_1(void)
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{
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meter = lv_meter_create(lv_scr_act());
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lv_obj_center(meter);
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lv_obj_set_size(meter, 200, 200);
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/*Add a scale first*/
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lv_meter_scale_t * scale = lv_meter_add_scale(meter);
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lv_meter_set_scale_ticks(meter, scale, 41, 2, 10, lv_palette_main(LV_PALETTE_GREY));
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lv_meter_set_scale_major_ticks(meter, scale, 8, 4, 15, lv_color_black(), 10);
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lv_meter_indicator_t * indic;
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/*Add a blue arc to the start*/
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indic = lv_meter_add_arc(meter, scale, 3, lv_palette_main(LV_PALETTE_BLUE), 0);
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lv_meter_set_indicator_start_value(meter, indic, 0);
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lv_meter_set_indicator_end_value(meter, indic, 20);
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/*Make the tick lines blue at the start of the scale*/
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indic = lv_meter_add_scale_lines(meter, scale, lv_palette_main(LV_PALETTE_BLUE), lv_palette_main(LV_PALETTE_BLUE),
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false, 0);
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lv_meter_set_indicator_start_value(meter, indic, 0);
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lv_meter_set_indicator_end_value(meter, indic, 20);
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/*Add a red arc to the end*/
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indic = lv_meter_add_arc(meter, scale, 3, lv_palette_main(LV_PALETTE_RED), 0);
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lv_meter_set_indicator_start_value(meter, indic, 80);
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lv_meter_set_indicator_end_value(meter, indic, 100);
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/*Make the tick lines red at the end of the scale*/
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indic = lv_meter_add_scale_lines(meter, scale, lv_palette_main(LV_PALETTE_RED), lv_palette_main(LV_PALETTE_RED), false,
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0);
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lv_meter_set_indicator_start_value(meter, indic, 80);
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lv_meter_set_indicator_end_value(meter, indic, 100);
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/*Add a needle line indicator*/
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indic = lv_meter_add_needle_line(meter, scale, 4, lv_palette_main(LV_PALETTE_GREY), -10);
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/*Create an animation to set the value*/
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lv_anim_t a;
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lv_anim_init(&a);
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lv_anim_set_exec_cb(&a, set_value);
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lv_anim_set_var(&a, indic);
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lv_anim_set_values(&a, 0, 100);
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lv_anim_set_time(&a, 2000);
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lv_anim_set_repeat_delay(&a, 100);
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lv_anim_set_playback_time(&a, 500);
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lv_anim_set_playback_delay(&a, 100);
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lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
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lv_anim_start(&a);
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}
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#endif
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