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54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
#include "../../../lvgl.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(), NULL);
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lv_obj_align(meter, NULL, LV_ALIGN_CENTER, 0, 0);
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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, 51, 2, 10, LV_COLOR_GRAY);
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lv_meter_set_scale_major_ticks(meter, scale, 10, 4, 15, LV_COLOR_BLACK, 10);
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lv_meter_indicator_t * indic;
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/*Add a red arc to the end */
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indic = lv_meter_add_arc(meter, scale, 3, LV_COLOR_RED, 1);
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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_COLOR_RED, LV_COLOR_RED, false, 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_COLOR_GRAY, -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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