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f753265a79
BREAKING CHANGE This is a huge update which introduces parallel rendering. lv_conf.h needs to be updated too.
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
#include "../../lv_examples.h"
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//TODO
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#if LV_USE_METER && LV_BUILD_EXAMPLES && 0
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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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static void tick_label_event(lv_event_t * e)
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{
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lv_obj_draw_part_dsc_t * draw_part_dsc = lv_event_get_draw_part_dsc(e);
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/*Be sure it's drawing meter related parts*/
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if(draw_part_dsc->class_p != &lv_meter_class) return;
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/*Be sure it's drawing the ticks*/
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if(draw_part_dsc->type != LV_METER_DRAW_PART_TICK) return;
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/*Be sure it's a major ticks*/
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if(draw_part_dsc->id % 5) return;
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/*The order of numbers on the clock is tricky: 12, 1, 2, 3...*/
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if(draw_part_dsc->id == 0) {
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lv_strncpy(draw_part_dsc->text, "12", 4);
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}
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else {
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lv_snprintf(draw_part_dsc->text, 4, "%d", draw_part_dsc->id / 5);
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}
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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_set_scale_ticks(meter, 60, 1, 10, lv_palette_main(LV_PALETTE_GREY));
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lv_meter_set_scale_major_ticks(meter, 5, 2, 20, lv_color_black(), 10);
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lv_meter_set_scale_range(meter, 0, 59, 354, 270);
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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, &img_hand, 5, 5);
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lv_meter_indicator_t * indic_hour = lv_meter_add_needle_img(meter, &img_hand, 5, 5);
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lv_obj_add_event(meter, tick_label_event, LV_EVENT_DRAW_PART_BEGIN, NULL);
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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, 59);
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lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
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lv_anim_set_time(&a, 5000); /*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, 240000); /*24 sec for 1 turn of the hour hand*/
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lv_anim_set_values(&a, 0, 59);
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lv_anim_start(&a);
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}
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#endif
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