how to use svg icons in openlayers 4 if collected from the svg file - svg

Question

the problem is the following, have the svg file format:
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px">
<symbol id="gear" viewBox="0 0 300 300" enable-background="new 0 0 300 300" xml:space="preserve">
<path fill="#inherit" stroke="#000000" d="..."/>
</symbol>
<symbol id="drill" viewBox="0 0 300 300" xml:space="preserve">
<path style="stroke:none; fill:#000000" d="..."/>
</symbol>
<svg>
do the following to make this file an icon and displayed on the map. The very icon collect:
SVG.create('img/iconsSvg.svg#gear','img/iconsSvg.svg#drill') it can be displayed in html
var SVG={
svgns:'http://www.w3.org/2000/svg',
xlink:'http://www.w3.org/1999/xlink',
create:function(){
let pathUse=arguments;
var svg=document.createElementNS(SVG.svgns, 'svg');
for (let i = 0; i < pathUse.length; i++) {
let use=document.createElementNS(SVG.svgns, 'use');
use.setAttributeNS(SVG.xlink, 'xlink:href', pathUse[i]);
svg.appendChild(use);
}
return svg;
}
}
in openlayers set the style of this:
function setStyleIcon(){
return new ol.style.Style({
image: new ol.style.Icon({
img:SVG.create('img/iconsSvg.svg#gear'),
imgSize:[30,30]
})
});
}
when it crashes the error: Argument 1 of CanvasRenderingContext2D.drawImage could not be converted to any of: HTMLImageElement, HTMLCanvasElement, HTMLVideoElement, ImageBitmap.
how to translate svg to canvas I do not know
but I can't put it on the map, thank you in advance for your help

Answer 1

Found a solution not very nice, the svg is inserted into a js file and work with it as with text, can someone come in handy:
Function set the style:
function setStyleSvg(type,color,scale){
var svg=svgIcon.getSvg([['location',color],[type,'rgb(100,100,100)',true]]);
var style=new ol.style.Style({
image: new ol.style.Icon( {
src:'data:image/svg+xml;utf8,'+svg,
scale: scale,
anchor: [0.5, 1],
anchorXUnits: 'fraction',
anchorYUnits: 'fraction',
})
});
return style;
};
collect svg (color need rgb/rgba format "for angularJS"):
app.factory('svgIcon',function(){
var size=[500,500];
var cssClass="unit";
var viewBox="0 0 2000 2000";
const closeTag='</svg>';
var insert='';
function icons(icon,color,label){
var out;
var offset=(label)?-250:0;
switch(icon){
case 'truck':out+=`<path viewBox="0 0 1024 538" transform="translate(448,`+(731+offset)+`)" fill="`+color+`" stroke="rgb(0,0,0)" stroke-width="10" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="1" d="...."/>
`;
break;
case 'drill':out+=`....`;
break;
case 'excavator':out+=`....`;
break;
}
return out;
}
this.setClass=(className)=>{
cssClass=className;
};
this.setViewBox=(set)=>{
viewBox=set;
};
this.setInsert=(set)=>{
insert=set;
};
this.getSvg=(arr)=>{//([[type,color,label],[type,color,label]....])
try {
var svg=`<svg width="500" height="500" viewBox="`+viewBox+`" `+insert+` class="`+cssClass+`" version="1.1" xmlns="http://www.w3.org/2000/svg">`;
for (var i = 0; i < arr.length; i++) {
svg+=icons(arr[i][0],arr[i][1],arr[i][2]);
}
svg+=closeTag;
return svg;
} catch (err) {
console.log('svg not create');
}
}
return this;});