--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/svghmi/widget_circularbar.ysl2	Wed Apr 22 15:33:53 2020 +0200
@@ -0,0 +1,48 @@
+// widget_circularbar.ysl2
+
+
+template "widget[@type='CircularBar']", mode="widget_defs" {
+    param "hmi_element";
+    | frequency: 10,
+    labels("path");
+    optional_labels("value min max");
+    | dispatch: function(value) {
+    |     if(this.value_elt)
+    |         this.value_elt.textContent = String(value);
+    |     let [min,max,start,end] = this.range;
+    |     let [cx,cy] = this.center;
+    |     let [rx,ry] = this.proportions;
+    |     let tip = start + (end-start)*Number(value)/(max-min);
+    |     let size = 0;
+    |     if (tip-start > Math.PI) {
+    |         size = 1;
+    |     } else {
+    |         size = 0;
+    |     }
+    |     this.path_elt.setAttribute('d', "M "+(cx+rx*Math.cos(start))+","+(cy+ry*Math.sin(start))+" A "+rx+","+ry+" 0 "+size+" 1 "+(cx+rx*Math.cos(tip))+","+(cy+ry*Math.sin(tip)));
+    | },
+    | range: undefined,
+    | init: function() {
+    |     let start = Number(this.path_elt.getAttribute('sodipodi:start'));
+    |     let end = Number(this.path_elt.getAttribute('sodipodi:end'));
+    |     let cx = Number(this.path_elt.getAttribute('sodipodi:cx'));
+    |     let cy = Number(this.path_elt.getAttribute('sodipodi:cy'));
+    |     let rx = Number(this.path_elt.getAttribute('sodipodi:rx'));
+    |     let ry = Number(this.path_elt.getAttribute('sodipodi:ry'));
+    |     if (ry == 0) {
+    |         ry = rx;
+    |     }
+    |     if (start > end) {
+    |         end = end + 2*Math.PI;
+    |     }
+    |     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, start, end];
+    |     this.center = [cx, cy];
+    |     this.proportions = [rx, ry];
+    | },
+}
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