55 lines
2.0 KiB
C
55 lines
2.0 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_end_value(meter, indic, v);
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}
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/**
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* A clock from a meter
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*/
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void lv_example_meter_3(void)
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{
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meter = lv_meter_create(lv_scr_act());
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lv_obj_set_size(meter, 220, 220);
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lv_obj_center(meter);
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/*Create a scale for the minutes*/
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/*61 ticks in a 360 degrees range (the last and the first line overlaps)*/
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lv_meter_scale_t * scale_min = lv_meter_add_scale(meter);
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lv_meter_set_scale_ticks(meter, scale_min, 61, 1, 10, lv_palette_main(LV_PALETTE_GREY));
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lv_meter_set_scale_range(meter, scale_min, 0, 60, 360, 270);
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/*Create another scale for the hours. It's only visual and contains only major ticks*/
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lv_meter_scale_t * scale_hour = lv_meter_add_scale(meter);
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lv_meter_set_scale_ticks(meter, scale_hour, 12, 0, 0, lv_palette_main(LV_PALETTE_GREY)); /*12 ticks*/
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lv_meter_set_scale_major_ticks(meter, scale_hour, 1, 2, 20, lv_color_black(), 10); /*Every tick is major*/
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lv_meter_set_scale_range(meter, scale_hour, 1, 12, 330, 300); /*[1..12] values in an almost full circle*/
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LV_IMG_DECLARE(img_hand)
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/*Add a the hands from images*/
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lv_meter_indicator_t * indic_min = lv_meter_add_needle_img(meter, scale_min, &img_hand, 5, 5);
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lv_meter_indicator_t * indic_hour = lv_meter_add_needle_img(meter, scale_min, &img_hand, 5, 5);
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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_values(&a, 0, 60);
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lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
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lv_anim_set_time(&a, 2000); /*2 sec for 1 turn of the minute hand (1 hour)*/
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lv_anim_set_var(&a, indic_min);
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lv_anim_start(&a);
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lv_anim_set_var(&a, indic_hour);
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lv_anim_set_time(&a, 24000); /*24 sec for 1 turn of the hour hand*/
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lv_anim_set_values(&a, 0, 60);
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lv_anim_start(&a);
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}
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#endif
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