// widget_meter.ysl2

template "widget[@type='Meter']", mode="widget_class"{

||

class MeterWidget extends Widget{

frequency = 10;

origin = undefined;

range = undefined;

dispatch(value) {

if(this.value_elt)

this.value_elt.textContent = String(value);

let [min,max,totallength] = this.range;

let length = Math.max(0,Math.min(totallength,(Number(value)-min)*totallength/(max-min)));

let tip = this.range_elt.getPointAtLength(length);

this.needle_elt.setAttribute('d', "M "+this.origin.x+","+this.origin.y+" "+tip.x+","+tip.y);

}

init() {

let min = this.min_elt ?

Number(this.min_elt.textContent) :

this.args.length >= 1 ? this.args[0] : 0;

let max = this.max_elt ?

Number(this.max_elt.textContent) :

this.args.length >= 2 ? this.args[1] : 100;

this.range = [min, max, this.range_elt.getTotalLength()]

this.origin = this.needle_elt.getPointAtLength(0);

}

}

||

}

template "widget[@type='Meter']", mode="widget_defs" {

param "hmi_element";

labels("needle range");

optional_labels("value min max");

|,

}