text: /* eslint-disable new-cap, class-methods-use-this */
  // Todo: Compare with latest canvg (add any improvements of ours) and add full JSDocs (denoting links to standard APIs and which are custom): https://github.com/canvg/canvg
  /**
   * Javascript SVG parser and renderer on Canvas.
   * @file canvg.js
   * @module canvg
   * @license MIT
   * @author Gabe Lerner <gabelerner@gmail.com>
   * @see https://github.com/canvg/canvg
   */
  
  import RGBColor from './rgbcolor.js';
  import {canvasRGBA} from '../external/stackblur-canvas/dist/stackblur-es.js';
  
  /**
   * Whether a value is `null` or `undefined`.
   * @param {any} val
   * @returns {boolean}
   */
  const isNullish = (val) => {
    return val === null || val === undefined;
  };
  
  /**
  * @callback module:canvg.ForceRedraw
  * @returns {boolean}
  */
  
  /**
  * @typedef {PlainObject} module:canvg.CanvgOptions
  * @property {boolean} ignoreMouse true => ignore mouse events
  * @property {boolean} ignoreAnimation true => ignore animations
  * @property {boolean} ignoreDimensions true => does not try to resize canvas
  * @property {boolean} ignoreClear true => does not clear canvas
  * @property {Integer} offsetX int => draws at a x offset
  * @property {Integer} offsetY int => draws at a y offset
  * @property {Integer} scaleWidth int => scales horizontally to width
  * @property {Integer} scaleHeight int => scales vertically to height
  * @property {module:canvg.ForceRedraw} forceRedraw function => will call the function on every frame, if it returns true, will redraw
  * @property {boolean} log Adds log function
  * @property {boolean} useCORS Whether to set CORS `crossOrigin` for the image to `Anonymous`
  */
  
  /**
  * If called with no arguments, it will replace all `<svg>` elements on the page
  * with `<canvas>` elements.
  * @function module:canvg.canvg
  * @param {HTMLCanvasElement|string} target canvas element or the id of a canvas element
  * @param {string|XMLDocument} s - svg string, url to svg file, or xml document
  * @param {module:canvg.CanvgOptions} [opts] Optional hash of options
  * @returns {Promise<XMLDocument|XMLDocument[]>} All the function after the first render is completed with dom
  */
  export const canvg = function (target, s, opts) {
    // no parameters
    if (isNullish(target) && isNullish(s) && isNullish(opts)) {
      const svgTags = document.querySelectorAll('svg');
      return Promise.all([...svgTags].map((svgTag) => {
        const c = document.createElement('canvas');
        c.width = svgTag.clientWidth;
        c.height = svgTag.clientHeight;
        svgTag.before(c);
        svgTag.remove();
        const div = document.createElement('div');
        div.append(svgTag);
        return canvg(c, div.innerHTML);
      }));
    }
  
    if (typeof target === 'string') {
      target = document.getElementById(target);
    }
  
    // store class on canvas
    if (!isNullish(target.svg)) target.svg.stop();
    const svg = build(opts || {});
    // on i.e. 8 for flash canvas, we can't assign the property so check for it
    if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
      target.svg = svg;
    }
  
    const ctx = target.getContext('2d');
    if (typeof s.documentElement !== 'undefined') {
      // load from xml doc
      return svg.loadXmlDoc(ctx, s);
    }
    if (s.substr(0, 1) === '<') {
      // load from xml string
      return svg.loadXml(ctx, s);
    }
    // load from url
    return svg.load(ctx, s);
  };
  
  /* eslint-disable jsdoc/check-types */
  /**
  * @param {module:canvg.CanvgOptions} opts
  * @returns {object}
  * @todo Flesh out exactly what object is returned here (after updating to latest and reincluding our changes here and those of StackBlur)
  */
  function build (opts) {
    /* eslint-enable jsdoc/check-types */
    const svg = {opts};
  
    svg.FRAMERATE = 30;
    svg.MAX_VIRTUAL_PIXELS = 30000;
  
    svg.log = function (msg) { /* */ };
    if (svg.opts.log === true && typeof console !== 'undefined') {
      svg.log = function (msg) { console.log(msg); }; // eslint-disable-line no-console
    }
  
    // globals
    svg.init = function (ctx) {
      let uniqueId = 0;
      svg.UniqueId = function () {
        uniqueId++;
        return 'canvg' + uniqueId;
      };
      svg.Definitions = {};
      svg.Styles = {};
      svg.Animations = [];
      svg.Images = [];
      svg.ctx = ctx;
      svg.ViewPort = {
        viewPorts: [],
        Clear () { this.viewPorts = []; },
        SetCurrent (width, height) { this.viewPorts.push({width, height}); },
        RemoveCurrent () { this.viewPorts.pop(); },
        Current () { return this.viewPorts[this.viewPorts.length - 1]; },
        width () { return this.Current().width; },
        height () { return this.Current().height; },
        ComputeSize (d) {
          if (!isNullish(d) && typeof d === 'number') return d;
          if (d === 'x') return this.width();
          if (d === 'y') return this.height();
          return Math.sqrt(
            (this.width() ** 2) + (this.height() ** 2)
          ) / Math.sqrt(2);
        }
      };
    };
    svg.init();
  
    // images loaded
    svg.ImagesLoaded = function () {
      return svg.Images.every((img) => img.loaded);
    };
  
    // trim
    svg.trim = function (s) {
      return s.replace(/^\s+|\s+$/g, '');
    };
  
    // compress spaces
    svg.compressSpaces = function (s) {
      return s.replace(/\s+/gm, ' ');
    };
  
    // ajax
    // Todo: Replace with `fetch` and polyfill
    svg.ajax = function (url, asynch) {
      const AJAX = window.XMLHttpRequest
        ? new XMLHttpRequest()
        : new window.ActiveXObject('Microsoft.XMLHTTP');
      if (asynch) {
        return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
          const req = AJAX.open('GET', url, true);
          req.addEventListener('load', () => {
            resolve(AJAX.responseText);
          });
          AJAX.send(null);
        });
      }
  
      AJAX.open('GET', url, false);
      AJAX.send(null);
      return AJAX.responseText;
    };
  
    // parse xml
    svg.parseXml = function (xml) {
      if (window.DOMParser) {
        const parser = new DOMParser();
        return parser.parseFromString(xml, 'text/xml');
      }
      xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
      const xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
      xmlDoc.async = 'false';
      xmlDoc.loadXML(xml);
      return xmlDoc;
    };
  
    // text extensions
    // get the text baseline
    const textBaselineMapping = {
      baseline: 'alphabetic',
      'before-edge': 'top',
      'text-before-edge': 'top',
      middle: 'middle',
      central: 'middle',
      'after-edge': 'bottom',
      'text-after-edge': 'bottom',
      ideographic: 'ideographic',
      alphabetic: 'alphabetic',
      hanging: 'hanging',
      mathematical: 'alphabetic'
    };
  
    svg.Property = class Property {
      constructor (name, value) {
        this.name = name;
        this.value = value;
      }
  
      getValue () {
        return this.value;
      }
  
      hasValue () {
        return (!isNullish(this.value) && this.value !== '');
      }
  
      // return the numerical value of the property
      numValue () {
        if (!this.hasValue()) return 0;
  
        let n = parseFloat(this.value);
        if (String(this.value).endsWith('%')) {
          n /= 100.0;
        }
        return n;
      }
  
      valueOrDefault (def) {
        if (this.hasValue()) return this.value;
        return def;
      }
  
      numValueOrDefault (def) {
        if (this.hasValue()) return this.numValue();
        return def;
      }
  
      // color extensions
      // augment the current color value with the opacity
      addOpacity (opacityProp) {
        let newValue = this.value;
        if (!isNullish(opacityProp.value) && opacityProp.value !== '' && typeof this.value === 'string') { // can only add opacity to colors, not patterns
          const color = new RGBColor(this.value);
          if (color.ok) {
            newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacityProp.numValue() + ')';
          }
        }
        return new svg.Property(this.name, newValue);
      }
  
      // definition extensions
      // get the definition from the definitions table
      getDefinition () {
        let name = this.value.match(/#([^)'"]+)/);
        if (name) { name = name[1]; }
        if (!name) { name = this.value; }
        return svg.Definitions[name];
      }
  
      isUrlDefinition () {
        return this.value.startsWith('url(');
      }
  
      getFillStyleDefinition (e, opacityProp) {
        let def = this.getDefinition();
  
        // gradient
        if (!isNullish(def) && def.createGradient) {
          return def.createGradient(svg.ctx, e, opacityProp);
        }
  
        // pattern
        if (!isNullish(def) && def.createPattern) {
          if (def.getHrefAttribute().hasValue()) {
            const pt = def.attribute('patternTransform');
            def = def.getHrefAttribute().getDefinition();
            if (pt.hasValue()) { def.attribute('patternTransform', true).value = pt.value; }
          }
          return def.createPattern(svg.ctx, e);
        }
  
        return null;
      }
  
      // length extensions
      getDPI (viewPort) {
        return 96.0; // TODO: compute?
      }
  
      getEM (viewPort) {
        let em = 12;
  
        const fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
        if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);
  
        return em;
      }
  
      getUnits () {
        return String(this.value).replace(/[\d.-]/g, '');
      }
  
      // get the length as pixels
      toPixels (viewPort, processPercent) {
        if (!this.hasValue()) return 0;
        const s = String(this.value);
        if (s.endsWith('em')) return this.numValue() * this.getEM(viewPort);
        if (s.endsWith('ex')) return this.numValue() * this.getEM(viewPort) / 2.0;
        if (s.endsWith('px')) return this.numValue();
        if (s.endsWith('pt')) return this.numValue() * this.getDPI(viewPort) * (1.0 / 72.0);
        if (s.endsWith('pc')) return this.numValue() * 15;
        if (s.endsWith('cm')) return this.numValue() * this.getDPI(viewPort) / 2.54;
        if (s.endsWith('mm')) return this.numValue() * this.getDPI(viewPort) / 25.4;
        if (s.endsWith('in')) return this.numValue() * this.getDPI(viewPort);
        if (s.endsWith('%')) return this.numValue() * svg.ViewPort.ComputeSize(viewPort);
        const n = this.numValue();
        if (processPercent && n < 1.0) return n * svg.ViewPort.ComputeSize(viewPort);
        return n;
      }
  
      // time extensions
      // get the time as milliseconds
      toMilliseconds () {
        if (!this.hasValue()) return 0;
        const s = String(this.value);
        if (s.endsWith('ms')) return this.numValue();
        if (s.endsWith('s')) return this.numValue() * 1000;
        return this.numValue();
      }
  
      // angle extensions
      // get the angle as radians
      toRadians () {
        if (!this.hasValue()) return 0;
        const s = String(this.value);
        if (s.endsWith('deg')) return this.numValue() * (Math.PI / 180.0);
        if (s.endsWith('grad')) return this.numValue() * (Math.PI / 200.0);
        if (s.endsWith('rad')) return this.numValue();
        return this.numValue() * (Math.PI / 180.0);
      }
  
      toTextBaseline () {
        if (!this.hasValue()) return null;
        return textBaselineMapping[this.value];
      }
    };
  
    // fonts
    svg.Font = {
      Styles: 'normal|italic|oblique|inherit',
      Variants: 'normal|small-caps|inherit',
      Weights: 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit',
  
      CreateFont (fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
        const f = !isNullish(inherit) ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
        return {
          fontFamily: fontFamily || f.fontFamily,
          fontSize: fontSize || f.fontSize,
          fontStyle: fontStyle || f.fontStyle,
          fontWeight: fontWeight || f.fontWeight,
          fontVariant: fontVariant || f.fontVariant,
          toString () {
            return [
              this.fontStyle, this.fontVariant, this.fontWeight,
              this.fontSize, this.fontFamily
            ].join(' ');
          }
        };
      },
  
      Parse (s) {
        const f = {};
        const ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
        const set = {
          fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false
        };
        let ff = '';
        ds.forEach((d) => {
          if (!set.fontStyle && this.Styles.includes(d)) {
            if (d !== 'inherit') {
              f.fontStyle = d;
            }
            set.fontStyle = true;
          } else if (!set.fontVariant && this.Variants.includes(d)) {
            if (d !== 'inherit') {
              f.fontVariant = d;
            }
            set.fontStyle = set.fontVariant = true;
          } else if (!set.fontWeight && this.Weights.includes(d)) {
            if (d !== 'inherit') {
              f.fontWeight = d;
            }
            set.fontStyle = set.fontVariant = set.fontWeight = true;
          } else if (!set.fontSize) {
            if (d !== 'inherit') {
              f.fontSize = d.split('/')[0];
            }
            set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
          } else if (d !== 'inherit') {
            ff += d;
          }
        });
        if (ff !== '') { f.fontFamily = ff; }
        return f;
      }
    };
  
    // points and paths
    svg.ToNumberArray = function (s) {
      const a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
      return a.map((_a) => parseFloat(_a));
    };
    svg.Point = class {
      constructor (x, y) {
        this.x = x;
        this.y = y;
      }
  
      angleTo (p) {
        return Math.atan2(p.y - this.y, p.x - this.x);
      }
  
      applyTransform (v) {
        const xp = this.x * v[0] + this.y * v[2] + v[4];
        const yp = this.x * v[1] + this.y * v[3] + v[5];
        this.x = xp;
        this.y = yp;
      }
    };
  
    svg.CreatePoint = function (s) {
      const a = svg.ToNumberArray(s);
      return new svg.Point(a[0], a[1]);
    };
    svg.CreatePath = function (s) {
      const a = svg.ToNumberArray(s);
      const path = [];
      for (let i = 0; i < a.length; i += 2) {
        path.push(new svg.Point(a[i], a[i + 1]));
      }
      return path;
    };
  
    // bounding box
    svg.BoundingBox = class {
      constructor (x1, y1, x2, y2) { // pass in initial points if you want
        this.x1 = Number.NaN;
        this.y1 = Number.NaN;
        this.x2 = Number.NaN;
        this.y2 = Number.NaN;
        this.addPoint(x1, y1);
        this.addPoint(x2, y2);
      }
  
      x () { return this.x1; }
      y () { return this.y1; }
      width () { return this.x2 - this.x1; }
      height () { return this.y2 - this.y1; }
  
      addPoint (x, y) {
        if (!isNullish(x)) {
          if (isNaN(this.x1) || isNaN(this.x2)) {
            this.x1 = x;
            this.x2 = x;
          }
          if (x < this.x1) this.x1 = x;
          if (x > this.x2) this.x2 = x;
        }
  
        if (!isNullish(y)) {
          if (isNaN(this.y1) || isNaN(this.y2)) {
            this.y1 = y;
            this.y2 = y;
          }
          if (y < this.y1) this.y1 = y;
          if (y > this.y2) this.y2 = y;
        }
      }
      addX (x) { this.addPoint(x, null); }
      addY (y) { this.addPoint(null, y); }
  
      addBoundingBox (bb) {
        this.addPoint(bb.x1, bb.y1);
        this.addPoint(bb.x2, bb.y2);
      }
  
      addQuadraticCurve (p0x, p0y, p1x, p1y, p2x, p2y) {
        const cp1x = p0x + 2 / 3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
        const cp1y = p0y + 2 / 3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
        const cp2x = cp1x + 1 / 3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
        const cp2y = cp1y + 1 / 3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
        this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
      }
  
      addBezierCurve (p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
        // from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
        const p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
        this.addPoint(p0[0], p0[1]);
        this.addPoint(p3[0], p3[1]);
  
        for (let i = 0; i <= 1; i++) {
          const f = function (t) {
            return ((1 - t) ** 3) * p0[i] +
            3 * ((1 - t) ** 2) * t * p1[i] +
            3 * (1 - t) * (t ** 2) * p2[i] +
            (t ** 3) * p3[i];
          };
  
          const b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
          const a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
          const c = 3 * p1[i] - 3 * p0[i];
  
          if (a === 0) {
            if (b === 0) continue;
            const t = -c / b;
            if (t > 0 && t < 1) {
              if (i === 0) this.addX(f(t));
              if (i === 1) this.addY(f(t));
            }
            continue;
          }
  
          const b2ac = (b ** 2) - 4 * c * a;
          if (b2ac < 0) continue;
          const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
          if (t1 > 0 && t1 < 1) {
            if (i === 0) this.addX(f(t1));
            if (i === 1) this.addY(f(t1));
          }
          const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
          if (t2 > 0 && t2 < 1) {
            if (i === 0) this.addX(f(t2));
            if (i === 1) this.addY(f(t2));
          }
        }
      }
  
      isPointInBox (x, y) {
        return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
      }
    };
  
    // transforms
    svg.Transform = class {
      constructor (v) {
        this.Type = {
          translate: class {
            constructor (s) {
              this.p = svg.CreatePoint(s);
              this.apply = function (ctx) {
                ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
              };
              this.unapply = function (ctx) {
                ctx.translate(-1.0 * this.p.x || 0.0, -1.0 * this.p.y || 0.0);
              };
              this.applyToPoint = function (p) {
                p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
              };
            }
          },
          rotate: class {
            constructor (s) {
              const a = svg.ToNumberArray(s);
              this.angle = new svg.Property('angle', a[0]);
              this.cx = a[1] || 0;
              this.cy = a[2] || 0;
              this.apply = function (ctx) {
                ctx.translate(this.cx, this.cy);
                ctx.rotate(this.angle.toRadians());
                ctx.translate(-this.cx, -this.cy);
              };
              this.unapply = function (ctx) {
                ctx.translate(this.cx, this.cy);
                ctx.rotate(-1.0 * this.angle.toRadians());
                ctx.translate(-this.cx, -this.cy);
              };
              this.applyToPoint = function (p) {
                const _a = this.angle.toRadians();
                p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
                p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
                p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
              };
            }
          },
          scale: class {
            constructor (s) {
              this.p = svg.CreatePoint(s);
              this.apply = function (ctx) {
                ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
              };
              this.unapply = function (ctx) {
                ctx.scale(1.0 / this.p.x || 1.0, 1.0 / this.p.y || this.p.x || 1.0);
              };
              this.applyToPoint = function (p) {
                p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
              };
            }
          },
          matrix: class {
            constructor (s) {
              this.m = svg.ToNumberArray(s);
              this.apply = function (ctx) {
                ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
              };
              this.applyToPoint = function (p) {
                p.applyTransform(this.m);
              };
            }
          }
        };
        Object.assign(this.Type, {
          SkewBase: class extends this.Type.matrix {
            constructor (s) {
              super(s);
              this.angle = new svg.Property('angle', s);
            }
          }
        });
        Object.assign(this.Type, {
          skewX: class extends this.Type.SkewBase {
            constructor (s) {
              super(s);
              this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
            }
          },
          skewY: class extends this.Type.SkewBase {
            constructor (s) {
              super(s);
              this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
            }
          }
        });
  
        const data = svg.trim(svg.compressSpaces(v)).replace(/\)([a-zA-Z])/g, ') $1').replace(/\)(\s?,\s?)/g, ') ').split(/\s(?=[a-z])/);
        this.transforms = data.map((d) => {
          const type = svg.trim(d.split('(')[0]);
          const s = d.split('(')[1].replace(')', '');
          const transform = new this.Type[type](s);
          transform.type = type;
          return transform;
        });
      }
  
      apply (ctx) {
        this.transforms.forEach((transform) => {
          transform.apply(ctx);
        });
      }
  
      unapply (ctx) {
        for (let i = this.transforms.length - 1; i >= 0; i--) {
          this.transforms[i].unapply(ctx);
        }
      }
  
      applyToPoint (p) {
        this.transforms.forEach((transform) => {
          transform.applyToPoint(p);
        });
      }
    };
  
    // aspect ratio
    svg.AspectRatio = function (ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
      // aspect ratio - https://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
      aspectRatio = svg.compressSpaces(aspectRatio);
      aspectRatio = aspectRatio.replace(/^defer\s/, ''); // ignore defer
      const align = aspectRatio.split(' ')[0] || 'xMidYMid';
      const meetOrSlice = aspectRatio.split(' ')[1] || 'meet';
  
      // calculate scale
      const scaleX = width / desiredWidth;
      const scaleY = height / desiredHeight;
      const scaleMin = Math.min(scaleX, scaleY);
      const scaleMax = Math.max(scaleX, scaleY);
      if (meetOrSlice === 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
      if (meetOrSlice === 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }
  
      refX = new svg.Property('refX', refX);
      refY = new svg.Property('refY', refY);
      if (refX.hasValue() && refY.hasValue()) {
        ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
      } else {
        // align
        if (align.startsWith('xMid') && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
        if (align.endsWith('YMid') && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
        if (align.startsWith('xMax') && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width - desiredWidth, 0);
        if (align.endsWith('YMax') && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height - desiredHeight);
      }
  
      // scale
      if (align === 'none') ctx.scale(scaleX, scaleY);
      else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);
      else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax);
  
      // translate
      ctx.translate(isNullish(minX) ? 0 : -minX, isNullish(minY) ? 0 : -minY);
    };
  
    // elements
    svg.Element = {};
  
    svg.EmptyProperty = new svg.Property('EMPTY', '');
  
    svg.Element.ElementBase = class {
      constructor (node) {
        // Argument from inheriting class
        this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
        this.attributes = {};
        this.styles = {};
        this.children = [];
        if (!isNullish(node) && node.nodeType === 1) { // ELEMENT_NODE
          // add children
          [...node.childNodes].forEach((childNode) => {
            if (childNode.nodeType === 1) {
              this.addChild(childNode, true); // ELEMENT_NODE
            }
            if (this.captureTextNodes && (
              childNode.nodeType === 3 || childNode.nodeType === 4
            )) {
              const text = childNode.nodeValue || childNode.text || '';
              if (svg.trim(svg.compressSpaces(text)) !== '') {
                this.addChild(new svg.Element.tspan(childNode), false); // TEXT_NODE
              }
            }
          });
  
          // add attributes
          [...node.attributes].forEach(({nodeName, nodeValue}) => {
            this.attributes[nodeName] = new svg.Property(
              nodeName,
              nodeValue
            );
          });
          // add tag styles
          let styles = svg.Styles[node.nodeName];
          if (!isNullish(styles)) {
            Object.entries(styles).forEach(([name, styleValue]) => {
              this.styles[name] = styleValue;
            });
          }
  
          // add class styles
          if (this.attribute('class').hasValue()) {
            const classes = svg.compressSpaces(this.attribute('class').value).split(' ');
            classes.forEach((clss) => {
              styles = svg.Styles['.' + clss];
              if (!isNullish(styles)) {
                Object.entries(styles).forEach(([name, styleValue]) => {
                  this.styles[name] = styleValue;
                });
              }
              styles = svg.Styles[node.nodeName + '.' + clss];
              if (!isNullish(styles)) {
                Object.entries(styles).forEach(([name, styleValue]) => {
                  this.styles[name] = styleValue;
                });
              }
            });
          }
  
          // add id styles
          if (this.attribute('id').hasValue()) {
            const _styles = svg.Styles['#' + this.attribute('id').value];
            if (!isNullish(_styles)) {
              Object.entries(_styles).forEach(([name, styleValue]) => {
                this.styles[name] = styleValue;
              });
            }
          }
  
          // add inline styles
          if (this.attribute('style').hasValue()) {
            const _styles = this.attribute('style').value.split(';');
            _styles.forEach((style) => {
              if (svg.trim(style) !== '') {
                let {name, value} = style.split(':');
                name = svg.trim(name);
                value = svg.trim(value);
                this.styles[name] = new svg.Property(name, value);
              }
            });
          }
  
          // add id
          if (this.attribute('id').hasValue()) {
            if (isNullish(svg.Definitions[this.attribute('id').value])) {
              svg.Definitions[this.attribute('id').value] = this;
            }
          }
        }
      }
  
      // get or create attribute
      attribute (name, createIfNotExists) {
        let a = this.attributes[name];
        if (!isNullish(a)) return a;
  
        if (createIfNotExists === true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
        return a || svg.EmptyProperty;
      }
  
      getHrefAttribute () {
        for (const a in this.attributes) {
          if (a.endsWith(':href')) {
            return this.attributes[a];
          }
        }
        return svg.EmptyProperty;
      }
  
      // get or create style, crawls up node tree
      style (name, createIfNotExists, skipAncestors) {
        let s = this.styles[name];
        if (!isNullish(s)) return s;
  
        const a = this.attribute(name);
        if (!isNullish(a) && a.hasValue()) {
          this.styles[name] = a; // move up to me to cache
          return a;
        }
  
        if (skipAncestors !== true) {
          const p = this.parent;
          if (!isNullish(p)) {
            const ps = p.style(name);
            if (!isNullish(ps) && ps.hasValue()) {
              return ps;
            }
          }
        }
  
        if (createIfNotExists === true) { s = new svg.Property(name, ''); this.styles[name] = s; }
        return s || svg.EmptyProperty;
      }
  
      // base render
      render (ctx) {
        // don't render display=none
        if (this.style('display').value === 'none') return;
  
        // don't render visibility=hidden
        if (this.style('visibility').value === 'hidden') return;
  
        ctx.save();
        if (this.attribute('mask').hasValue()) { // mask
          const mask = this.attribute('mask').getDefinition();
          if (!isNullish(mask)) mask.apply(ctx, this);
        } else if (this.style('filter').hasValue()) { // filter
          const filter = this.style('filter').getDefinition();
          if (!isNullish(filter)) filter.apply(ctx, this);
        } else {
          this.setContext(ctx);
          this.renderChildren(ctx);
          this.clearContext(ctx);
        }
        ctx.restore();
      }
  
      // base set context
      setContext (ctx) {
        // OVERRIDE ME!
      }
  
      // base clear context
      clearContext (ctx) {
        // OVERRIDE ME!
      }
  
      // base render children
      renderChildren (ctx) {
        this.children.forEach((child) => {
          child.render(ctx);
        });
      }
  
      addChild (childNode, create) {
        const child = create
          ? svg.CreateElement(childNode)
          : childNode;
        child.parent = this;
        if (child.type !== 'title') { this.children.push(child); }
      }
    };
  
    svg.Element.RenderedElementBase = class extends svg.Element.ElementBase {
      setContext (ctx) {
        // fill
        if (this.style('fill').isUrlDefinition()) {
          const fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
          if (!isNullish(fs)) ctx.fillStyle = fs;
        } else if (this.style('fill').hasValue()) {
          const fillStyle = this.style('fill');
          if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
          ctx.fillStyle = (fillStyle.value === 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
        }
        if (this.style('fill-opacity').hasValue()) {
          let fillStyle = new svg.Property('fill', ctx.fillStyle);
          fillStyle = fillStyle.addOpacity(this.style('fill-opacity'));
          ctx.fillStyle = fillStyle.value;
        }
  
        // stroke
        if (this.style('stroke').isUrlDefinition()) {
          const fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
          if (!isNullish(fs)) ctx.strokeStyle = fs;
        } else if (this.style('stroke').hasValue()) {
          const strokeStyle = this.style('stroke');
          if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
          ctx.strokeStyle = (strokeStyle.value === 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
        }
        if (this.style('stroke-opacity').hasValue()) {
          let strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
          strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity'));
          ctx.strokeStyle = strokeStyle.value;
        }
        if (this.style('stroke-width').hasValue()) {
          const newLineWidth = this.style('stroke-width').toPixels();
          ctx.lineWidth = newLineWidth === 0 ? 0.001 : newLineWidth; // browsers don't respect 0
        }
        if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
        if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
        if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
        if (this.style('stroke-dasharray').hasValue() && this.style('stroke-dasharray').value !== 'none') {
          const gaps = svg.ToNumberArray(this.style('stroke-dasharray').value);
          if (typeof ctx.setLineDash !== 'undefined') {
            ctx.setLineDash(gaps);
          } else if (typeof ctx.webkitLineDash !== 'undefined') {
            ctx.webkitLineDash = gaps;
          } else if (typeof ctx.mozDash !== 'undefined' && !(gaps.length === 1 && gaps[0] === 0)) {
            ctx.mozDash = gaps;
          }
  
          const offset = this.style('stroke-dashoffset').numValueOrDefault(1);
          if (typeof ctx.lineDashOffset !== 'undefined') {
            ctx.lineDashOffset = offset;
          } else if (typeof ctx.webkitLineDashOffset !== 'undefined') {
            ctx.webkitLineDashOffset = offset;
          } else if (typeof ctx.mozDashOffset !== 'undefined') {
            ctx.mozDashOffset = offset;
          }
        }
  
        // font
        if (typeof ctx.font !== 'undefined') {
          ctx.font = svg.Font.CreateFont(
            this.style('font-style').value,
            this.style('font-variant').value,
            this.style('font-weight').value,
            this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
            this.style('font-family').value
          ).toString();
        }
  
        // transform
        if (this.attribute('transform').hasValue()) {
          const transform = new svg.Transform(this.attribute('transform').value);
          transform.apply(ctx);
        }
  
        // clip
        if (this.style('clip-path', false, true).hasValue()) {
          const clip = this.style('clip-path', false, true).getDefinition();
          if (!isNullish(clip)) clip.apply(ctx);
        }
  
        // opacity
        if (this.style('opacity').hasValue()) {
          ctx.globalAlpha = this.style('opacity').numValue();
        }
      }
    };
  
    svg.Element.PathElementBase = class extends svg.Element.RenderedElementBase {
      path (ctx) {
        if (!isNullish(ctx)) ctx.beginPath();
        return new svg.BoundingBox();
      }
  
      renderChildren (ctx) {
        this.path(ctx);
        svg.Mouse.checkPath(this, ctx);
        if (ctx.fillStyle !== '') {
          if (this.style('fill-rule').valueOrDefault('inherit') !== 'inherit') {
            ctx.fill(this.style('fill-rule').value);
          } else {
            ctx.fill();
          }
        }
        if (ctx.strokeStyle !== '') ctx.stroke();
  
        const markers = this.getMarkers();
        if (!isNullish(markers)) {
          if (this.style('marker-start').isUrlDefinition()) {
            const marker = this.style('marker-start').getDefinition();
            marker.render(ctx, markers[0][0], markers[0][1]);
          }
          if (this.style('marker-mid').isUrlDefinition()) {
            const marker = this.style('marker-mid').getDefinition();
            for (let i = 1; i < markers.length - 1; i++) {
              marker.render(ctx, markers[i][0], markers[i][1]);
            }
          }
          if (this.style('marker-end').isUrlDefinition()) {
            const marker = this.style('marker-end').getDefinition();
            marker.render(ctx, markers[markers.length - 1][0], markers[markers.length - 1][1]);
          }
        }
      }
  
      getBoundingBox () {
        return this.path();
      }
  
      getMarkers () {
        return null;
      }
    };
  
    // svg element
    svg.Element.svg = class extends svg.Element.RenderedElementBase {
      clearContext (ctx) {
        super.clearContext(ctx);
        svg.ViewPort.RemoveCurrent();
      }
  
      setContext (ctx) {
        // initial values and defaults
        ctx.strokeStyle = 'rgba(0,0,0,0)';
        ctx.lineCap = 'butt';
        ctx.lineJoin = 'miter';
        ctx.miterLimit = 4;
        if (typeof ctx.font !== 'undefined' && typeof window.getComputedStyle !== 'undefined') {
          ctx.font = window.getComputedStyle(ctx.canvas).getPropertyValue('font');
        }
  
        super.setContext(ctx);
  
        // create new view port
        if (!this.attribute('x').hasValue()) this.attribute('x', true).value = 0;
        if (!this.attribute('y').hasValue()) this.attribute('y', true).value = 0;
        ctx.translate(this.attribute('x').toPixels('x'), this.attribute('y').toPixels('y'));
  
        let width = svg.ViewPort.width();
        let height = svg.ViewPort.height();
  
        if (!this.attribute('width').hasValue()) this.attribute('width', true).value = '100%';
        if (!this.attribute('height').hasValue()) this.attribute('height', true).value = '100%';
        if (typeof this.root === 'undefined') {
          width = this.attribute('width').toPixels('x');
          height = this.attribute('height').toPixels('y');
  
          let x = 0;
          let y = 0;
          if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
            x = -this.attribute('refX').toPixels('x');
            y = -this.attribute('refY').toPixels('y');
          }
  
          if (this.attribute('overflow').valueOrDefault('hidden') !== 'visible') {
            ctx.beginPath();
            ctx.moveTo(x, y);
            ctx.lineTo(width, y);
            ctx.lineTo(width, height);
            ctx.lineTo(x, height);
            ctx.closePath();
            ctx.clip();
          }
        }
        svg.ViewPort.SetCurrent(width, height);
  
        // viewbox
        if (this.attribute('viewBox').hasValue()) {
          const viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
          const minX = viewBox[0];
          const minY = viewBox[1];
          width = viewBox[2];
          height = viewBox[3];
  
          svg.AspectRatio(
            ctx,
            this.attribute('preserveAspectRatio').value,
            svg.ViewPort.width(),
            width,
            svg.ViewPort.height(),
            height,
            minX,
            minY,
            this.attribute('refX').value,
            this.attribute('refY').value
          );
  
          svg.ViewPort.RemoveCurrent();
          svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
        }
      }
    };
  
    // rect element
    svg.Element.rect = class extends svg.Element.PathElementBase {
      path (ctx) {
        const x = this.attribute('x').toPixels('x');
        const y = this.attribute('y').toPixels('y');
        const width = this.attribute('width').toPixels('x');
        const height = this.attribute('height').toPixels('y');
        let rx = this.attribute('rx').toPixels('x');
        let ry = this.attribute('ry').toPixels('y');
        if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
        if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
        rx = Math.min(rx, width / 2.0);
        ry = Math.min(ry, height / 2.0);
        if (!isNullish(ctx)) {
          ctx.beginPath();
          ctx.moveTo(x + rx, y);
          ctx.lineTo(x + width - rx, y);
          ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
          ctx.lineTo(x + width, y + height - ry);
          ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
          ctx.lineTo(x + rx, y + height);
          ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
          ctx.lineTo(x, y + ry);
          ctx.quadraticCurveTo(x, y, x + rx, y);
          ctx.closePath();
        }
  
        return new svg.BoundingBox(x, y, x + width, y + height);
      }
    };
  
    // circle element
    svg.Element.circle = class extends svg.Element.PathElementBase {
      path (ctx) {
        const cx = this.attribute('cx').toPixels('x');
        const cy = this.attribute('cy').toPixels('y');
        const r = this.attribute('r').toPixels();
  
        if (!isNullish(ctx)) {
          ctx.beginPath();
          ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
          ctx.closePath();
        }
  
        return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
      }
    };
  
    // ellipse element
    const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
    svg.Element.ellipse = class extends svg.Element.PathElementBase {
      path (ctx) {
        const rx = this.attribute('rx').toPixels('x');
        const ry = this.attribute('ry').toPixels('y');
        const cx = this.attribute('cx').toPixels('x');
        const cy = this.attribute('cy').toPixels('y');
  
        if (!isNullish(ctx)) {
          ctx.beginPath();
          ctx.moveTo(cx, cy - ry);
          ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
          ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
          ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
          ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
          ctx.closePath();
        }
  
        return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
      }
    };
  
    // line element
    svg.Element.line = class extends svg.Element.PathElementBase {
      getPoints () {
        return [
          new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
          new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))
        ];
      }
  
      path (ctx) {
        const points = this.getPoints();
  
        if (!isNullish(ctx)) {
          ctx.beginPath();
          ctx.moveTo(points[0].x, points[0].y);
          ctx.lineTo(points[1].x, points[1].y);
        }
  
        return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
      }
  
      getMarkers () {
        const points = this.getPoints();
        const a = points[0].angleTo(points[1]);
        return [[points[0], a], [points[1], a]];
      }
    };
  
    // polyline element
    svg.Element.polyline = class extends svg.Element.PathElementBase {
      constructor (node) {
        super(node);
  
        this.points = svg.CreatePath(this.attribute('points').value);
      }
      path (ctx) {
        const {x, y} = this.points[0];
        const bb = new svg.BoundingBox(x, y);
        if (!isNullish(ctx)) {
          ctx.beginPath();
          ctx.moveTo(x, y);
        }
        for (let i = 1; i < this.points.length; i++) {
          const {x: _x, y: _y} = this.points[i];
          bb.addPoint(_x, _y);
          if (!isNullish(ctx)) ctx.lineTo(_x, _y);
        }
        return bb;
      }
  
      getMarkers () {
        const markers = [];
        for (let i = 0; i < this.points.length - 1; i++) {
          markers.push([this.points[i], this.points[i].angleTo(this.points[i + 1])]);
        }
        markers.push([this.points[this.points.length - 1], markers[markers.length - 1][1]]);
        return markers;
      }
    };
  
    // polygon element
    svg.Element.polygon = class extends svg.Element.polyline {
      path (ctx) {
        const bb = super.path(ctx);
        if (!isNullish(ctx)) {
          ctx.lineTo(this.points[0].x, this.points[0].y);
          ctx.closePath();
        }
        return bb;
      }
    };
  
    // path element
    svg.Element.path = class extends svg.Element.PathElementBase {
      constructor (node) {
        super(node);
  
        let d = this.attribute('d').value
        // TODO: convert to real lexer based on https://www.w3.org/TR/SVG11/paths.html#PathDataBNF
          .replace(/,/gm, ' ') // get rid of all commas
          .replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from commands
          .replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from commands
          .replace(/([MmZzLlHhVvCcSsQqTtAa])(\S)/gm, '$1 $2') // separate commands from points
          .replace(/(\S)([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from points
          .replace(/(\d)([+-])/gm, '$1 $2') // separate digits when no comma
          .replace(/(\.\d*)(\.)/gm, '$1 $2') // separate digits when no comma
          .replace(/([Aa](\s+\d+)(\s+\d+)(\s+\d+))\s+([01])\s*([01])/gm, '$1 $5 $6 '); // shorthand elliptical arc path syntax
        d = svg.compressSpaces(d); // compress multiple spaces
        d = svg.trim(d);
        this.PathParser = {
          tokens: d.split(' '),
  
          reset () {
            this.i = -1;
            this.command = '';
            this.previousCommand = '';
            this.start = new svg.Point(0, 0);
            this.control = new svg.Point(0, 0);
            this.current = new svg.Point(0, 0);
            this.points = [];
            this.angles = [];
          },
  
          isEnd () {
            return this.i >= this.tokens.length - 1;
          },
  
          isCommandOrEnd () {
            if (this.isEnd()) return true;
            return !isNullish(this.tokens[this.i + 1].match(/^[A-Za-z]$/));
          },
  
          isRelativeCommand () {
            switch (this.command) {
            case 'm':
            case 'l':
            case 'h':
            case 'v':
            case 'c':
            case 's':
            case 'q':
            case 't':
            case 'a':
            case 'z':
              return true;
            }
            return false;
          },
  
          getToken () {
            this.i++;
            return this.tokens[this.i];
          },
  
          getScalar () {
            return parseFloat(this.getToken());
          },
  
          nextCommand () {
            this.previousCommand = this.command;
            this.command = this.getToken();
          },
  
          getPoint () {
            const p = new svg.Point(this.getScalar(), this.getScalar());
            return this.makeAbsolute(p);
          },
  
          getAsControlPoint () {
            const p = this.getPoint();
            this.control = p;
            return p;
          },
  
          getAsCurrentPoint () {
            const p = this.getPoint();
            this.current = p;
            return p;
          },
  
          getReflectedControlPoint () {
            if (this.previousCommand.toLowerCase() !== 'c' &&
              this.previousCommand.toLowerCase() !== 's' &&
              this.previousCommand.toLowerCase() !== 'q' &&
              this.previousCommand.toLowerCase() !== 't') {
              return this.current;
            }
  
            // reflect point
            const p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
            return p;
          },
  
          makeAbsolute (p) {
            if (this.isRelativeCommand()) {
              p.x += this.current.x;
              p.y += this.current.y;
            }
            return p;
          },
  
          addMarker (p, from, priorTo) {
            // if the last angle isn't filled in because we didn't have this point yet ...
            if (!isNullish(priorTo) && this.angles.length > 0 && isNullish(this.angles[this.angles.length - 1])) {
              this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
            }
            this.addMarkerAngle(p, isNullish(from) ? null : from.angleTo(p));
          },
  
          addMarkerAngle (p, a) {
            this.points.push(p);
            this.angles.push(a);
          },
  
          getMarkerPoints () { return this.points; },
          getMarkerAngles () {
            for (let i = 0; i < this.angles.length; i++) {
              if (isNullish(this.angles[i])) {
                for (let j = i + 1; j < this.angles.length; j++) {
                  if (!isNullish(this.angles[j])) {
                    this.angles[i] = this.angles[j];
                    break;
                  }
                }
              }
            }
            return this.angles;
          }
        };
      }
  
      path (ctx) {
        const pp = this.PathParser;
        pp.reset();
  
        const bb = new svg.BoundingBox();
        if (!isNullish(ctx)) ctx.beginPath();
        while (!pp.isEnd()) {
          pp.nextCommand();
          switch (pp.command) {
          case 'M':
          case 'm': {
            const p = pp.getAsCurrentPoint();
            pp.addMarker(p);
            bb.addPoint(p.x, p.y);
            if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
            pp.start = pp.current;
            while (!pp.isCommandOrEnd()) {
              const _p = pp.getAsCurrentPoint();
              pp.addMarker(_p, pp.start);
              bb.addPoint(_p.x, _p.y);
              if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
            }
            break;
          } case 'L':
          case 'l':
            while (!pp.isCommandOrEnd()) {
              const c = pp.current;
              const p = pp.getAsCurrentPoint();
              pp.addMarker(p, c);
              bb.addPoint(p.x, p.y);
              if (!isNullish(ctx)) ctx.lineTo(p.x, p.y);
            }
            break;
          case 'H':
          case 'h':
            while (!pp.isCommandOrEnd()) {
              const newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
              pp.addMarker(newP, pp.current);
              pp.current = newP;
              bb.addPoint(pp.current.x, pp.current.y);
              if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
            }
            break;
          case 'V':
          case 'v':
            while (!pp.isCommandOrEnd()) {
              const newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
              pp.addMarker(newP, pp.current);
              pp.current = newP;
              bb.addPoint(pp.current.x, pp.current.y);
              if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
            }
            break;
          case 'C':
          case 'c':
            while (!pp.isCommandOrEnd()) {
              const curr = pp.current;
              const p1 = pp.getPoint();
              const cntrl = pp.getAsControlPoint();
              const cp = pp.getAsCurrentPoint();
              pp.addMarker(cp, cntrl, p1);
              bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
              if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
            }
            break;
          case 'S':
          case 's':
            while (!pp.isCommandOrEnd()) {
              const curr = pp.current;
              const p1 = pp.getReflectedControlPoint();
              const cntrl = pp.getAsControlPoint();
              const cp = pp.getAsCurrentPoint();
              pp.addMarker(cp, cntrl, p1);
              bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
              if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
            }
            break;
          case 'Q':
          case 'q':
            while (!pp.isCommandOrEnd()) {
              const curr = pp.current;
              const cntrl = pp.getAsControlPoint();
              const cp = pp.getAsCurrentPoint();
              pp.addMarker(cp, cntrl, cntrl);
              bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
              if (!isNullish(ctx)) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
            }
            break;
          case 'T':
          case 't':
            while (!pp.isCommandOrEnd()) {
              const curr = pp.current;
              const cntrl = pp.getReflectedControlPoint();
              pp.control = cntrl;
              const cp = pp.getAsCurrentPoint();
              pp.addMarker(cp, cntrl, cntrl);
              bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
              if (!isNullish(ctx)) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
            }
            break;
          case 'A':
          case 'a':
            while (!pp.isCommandOrEnd()) {
              const curr = pp.current;
              let rx = pp.getScalar();
              let ry = pp.getScalar();
              const xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
              const largeArcFlag = pp.getScalar();
              const sweepFlag = pp.getScalar();
              const cp = pp.getAsCurrentPoint();
  
              // Conversion from endpoint to center parameterization
              // https://www.w3.org/TR/SVG11/implnote.html#ArcConversionEndpointToCenter
  
              // x1', y1'
              const currp = new svg.Point(
                Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
                -Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
              );
              // adjust radii
              const l = (currp.x ** 2) / (rx ** 2) + (currp.y ** 2) / (ry ** 2);
              if (l > 1) {
                rx *= Math.sqrt(l);
                ry *= Math.sqrt(l);
              }
              // cx', cy'
              let s = (largeArcFlag === sweepFlag ? -1 : 1) * Math.sqrt(
                (((rx ** 2) * (ry ** 2)) - ((rx ** 2) * (currp.y ** 2)) - ((ry ** 2) * (currp.x ** 2))) /
                ((rx ** 2) * (currp.y ** 2) + (ry ** 2) * (currp.x ** 2))
              );
              if (isNaN(s)) s = 0;
              const cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
              // cx, cy
              const centp = new svg.Point(
                (curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
                (curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
              );
              // vector magnitude
              const m = function (v) {
                return Math.sqrt((v[0] ** 2) + (v[1] ** 2));
              };
              // ratio between two vectors
              const r = function (u, v) {
                return (u[0] * v[0] + u[1] * v[1]) / (m(u) * m(v));
              };
              // angle between two vectors
              const a = function (u, v) {
                return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(r(u, v));
              };
              // initial angle
              const a1 = a([1, 0], [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry]);
              // angle delta
              const u = [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry];
              const v = [(-currp.x - cpp.x) / rx, (-currp.y - cpp.y) / ry];
              let ad = a(u, v);
              if (r(u, v) <= -1) ad = Math.PI;
              if (r(u, v) >= 1) ad = 0;
  
              // for markers
              const dir = 1 - sweepFlag ? 1.0 : -1.0;
              const ah = a1 + dir * (ad / 2.0);
              const halfWay = new svg.Point(
                centp.x + rx * Math.cos(ah),
                centp.y + ry * Math.sin(ah)
              );
              pp.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
              pp.addMarkerAngle(cp, ah - dir * Math.PI);
  
              bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
              if (!isNullish(ctx)) {
                const _r = rx > ry ? rx : ry;
                const sx = rx > ry ? 1 : rx / ry;
                const sy = rx > ry ? ry / rx : 1;
  
                ctx.translate(centp.x, centp.y);
                ctx.rotate(xAxisRotation);
                ctx.scale(sx, sy);
                ctx.arc(0, 0, _r, a1, a1 + ad, 1 - sweepFlag);
                ctx.scale(1 / sx, 1 / sy);
                ctx.rotate(-xAxisRotation);
                ctx.translate(-centp.x, -centp.y);
              }
            }
            break;
          case 'Z':
          case 'z':
            if (!isNullish(ctx)) ctx.closePath();
            pp.current = pp.start;
          }
        }
  
        return bb;
      }
  
      getMarkers () {
        const points = this.PathParser.getMarkerPoints();
        const angles = this.PathParser.getMarkerAngles();
  
        const markers = points.map((point, i) => {
          return [point, angles[i]];
        });
        return markers;
      }
    };
  
    // pattern element
    svg.Element.pattern = class extends svg.Element.ElementBase {
      createPattern (ctx, element) {
        const width = this.attribute('width').toPixels('x', true);
        const height = this.attribute('height').toPixels('y', true);
  
        // render me using a temporary svg element
        const tempSvg = new svg.Element.svg();
        tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
        tempSvg.attributes.width = new svg.Property('width', width + 'px');
        tempSvg.attributes.height = new svg.Property('height', height + 'px');
        tempSvg.attributes.transform = new svg.Property('transform', this.attribute('patternTransform').value);
        tempSvg.children = this.children;
  
        const c = document.createElement('canvas');
        c.width = width;
        c.height = height;
        const cctx = c.getContext('2d');
        if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
          cctx.translate(this.attribute('x').toPixels('x', true), this.attribute('y').toPixels('y', true));
        }
        // render 3x3 grid so when we transform there's no white space on edges
        for (let x = -1; x <= 1; x++) {
          for (let y = -1; y <= 1; y++) {
            cctx.save();
            cctx.translate(x * c.width, y * c.height);
            tempSvg.render(cctx);
            cctx.restore();
          }
        }
        const pattern = ctx.createPattern(c, 'repeat');
        return pattern;
      }
    };
  
    // marker element
    svg.Element.marker = class extends svg.Element.ElementBase {
      render (ctx, point, angle) {
        ctx.translate(point.x, point.y);
        if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(angle);
        if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
        ctx.save();
  
        // render me using a temporary svg element
        const tempSvg = new svg.Element.svg();
        tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
        tempSvg.attributes.refX = new svg.Property('refX', this.attribute('refX').value);
        tempSvg.attributes.refY = new svg.Property('refY', this.attribute('refY').value);
        tempSvg.attributes.width = new svg.Property('width', this.attribute('markerWidth').value);
        tempSvg.attributes.height = new svg.Property('height', this.attribute('markerHeight').value);
        tempSvg.attributes.fill = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
        tempSvg.attributes.stroke = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
        tempSvg.children = this.children;
        tempSvg.render(ctx);
  
        ctx.restore();
        if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(1 / ctx.lineWidth, 1 / ctx.lineWidth);
        if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(-angle);
        ctx.translate(-point.x, -point.y);
      }
    };
  
    // definitions element
    svg.Element.defs = class extends svg.Element.ElementBase {
      render (ctx) {
        // NOOP
      }
    };
  
    // base for gradients
    svg.Element.GradientBase = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
  
        this.stops = [];
        this.children.forEach((child) => {
          if (child.type === 'stop') {
            this.stops.push(child);
          }
        });
      }
  
      getGradient () {
        // OVERRIDE ME!
      }
  
      createGradient (ctx, element, parentOpacityProp) {
        const stopsContainer = this.getHrefAttribute().hasValue()
          ? this.getHrefAttribute().getDefinition()
          : this;
  
        const addParentOpacity = function (color) {
          if (parentOpacityProp.hasValue()) {
            const p = new svg.Property('color', color);
            return p.addOpacity(parentOpacityProp).value;
          }
          return color;
        };
  
        const g = this.getGradient(ctx, element);
        if (isNullish(g)) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
        stopsContainer.stops.forEach(({offset, color}) => {
          g.addColorStop(offset, addParentOpacity(color));
        });
  
        if (this.attribute('gradientTransform').hasValue()) {
          // render as transformed pattern on temporary canvas
          const rootView = svg.ViewPort.viewPorts[0];
  
          const rect = new svg.Element.rect();
          rect.attributes.x = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
          rect.attributes.y = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
          rect.attributes.width = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
          rect.attributes.height = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
  
          const group = new svg.Element.g();
          group.attributes.transform = new svg.Property('transform', this.attribute('gradientTransform').value);
          group.children = [rect];
  
          const tempSvg = new svg.Element.svg();
          tempSvg.attributes.x = new svg.Property('x', 0);
          tempSvg.attributes.y = new svg.Property('y', 0);
          tempSvg.attributes.width = new svg.Property('width', rootView.width);
          tempSvg.attributes.height = new svg.Property('height', rootView.height);
          tempSvg.children = [group];
  
          const c = document.createElement('canvas');
          c.width = rootView.width;
          c.height = rootView.height;
          const tempCtx = c.getContext('2d');
          tempCtx.fillStyle = g;
          tempSvg.render(tempCtx);
          return tempCtx.createPattern(c, 'no-repeat');
        }
  
        return g;
      }
    };
  
    // linear gradient element
    svg.Element.linearGradient = class extends svg.Element.GradientBase {
      getGradient (ctx, element) {
        const useBB = this.gradientUnits === 'objectBoundingBox' && element.getBoundingBox;
        const bb = useBB
          ? element.getBoundingBox()
          : null;
  
        if (!this.attribute('x1').hasValue() &&
          !this.attribute('y1').hasValue() &&
          !this.attribute('x2').hasValue() &&
          !this.attribute('y2').hasValue()
        ) {
          this.attribute('x1', true).value = 0;
          this.attribute('y1', true).value = 0;
          this.attribute('x2', true).value = 1;
          this.attribute('y2', true).value = 0;
        }
  
        const x1 = (useBB
          ? bb.x() + bb.width() * this.attribute('x1').numValue()
          : this.attribute('x1').toPixels('x'));
        const y1 = (useBB
          ? bb.y() + bb.height() * this.attribute('y1').numValue()
          : this.attribute('y1').toPixels('y'));
        const x2 = (useBB
          ? bb.x() + bb.width() * this.attribute('x2').numValue()
          : this.attribute('x2').toPixels('x'));
        const y2 = (useBB
          ? bb.y() + bb.height() * this.attribute('y2').numValue()
          : this.attribute('y2').toPixels('y'));
  
        if (x1 === x2 && y1 === y2) return null;
        return ctx.createLinearGradient(x1, y1, x2, y2);
      }
    };
  
    // radial gradient element
    svg.Element.radialGradient = class extends svg.Element.GradientBase {
      getGradient (ctx, element) {
        const useBB = this.gradientUnits === 'objectBoundingBox' && element.getBoundingBox;
        const bb = useBB ? element.getBoundingBox() : null;
  
        if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
        if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
        if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';
  
        const cx = (useBB
          ? bb.x() + bb.width() * this.attribute('cx').numValue()
          : this.attribute('cx').toPixels('x'));
        const cy = (useBB
          ? bb.y() + bb.height() * this.attribute('cy').numValue()
          : this.attribute('cy').toPixels('y'));
  
        let fx = cx;
        let fy = cy;
        if (this.attribute('fx').hasValue()) {
          fx = (useBB
            ? bb.x() + bb.width() * this.attribute('fx').numValue()
            : this.attribute('fx').toPixels('x'));
        }
        if (this.attribute('fy').hasValue()) {
          fy = (useBB
            ? bb.y() + bb.height() * this.attribute('fy').numValue()
            : this.attribute('fy').toPixels('y'));
        }
  
        const r = (useBB
          ? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
          : this.attribute('r').toPixels());
  
        return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
      }
    };
  
    // gradient stop element
    svg.Element.stop = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        this.offset = this.attribute('offset').numValue();
        if (this.offset < 0) this.offset = 0;
        if (this.offset > 1) this.offset = 1;
  
        let stopColor = this.style('stop-color');
        if (this.style('stop-opacity').hasValue()) {
          stopColor = stopColor.addOpacity(this.style('stop-opacity'));
        }
        this.color = stopColor.value;
      }
    };
  
    // animation base element
    svg.Element.AnimateBase = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        svg.Animations.push(this);
  
        this.duration = 0.0;
        this.begin = this.attribute('begin').toMilliseconds();
        this.maxDuration = this.begin + this.attribute('dur').toMilliseconds();
  
        this.initialValue = null;
        this.initialUnits = '';
        this.removed = false;
  
        this.from = this.attribute('from');
        this.to = this.attribute('to');
        this.values = this.attribute('values');
        if (this.values.hasValue()) this.values.value = this.values.value.split(';');
      }
  
      getProperty () {
        const attributeType = this.attribute('attributeType').value;
        const attributeName = this.attribute('attributeName').value;
  
        if (attributeType === 'CSS') {
          return this.parent.style(attributeName, true);
        }
        return this.parent.attribute(attributeName, true);
      }
  
      calcValue () {
        // OVERRIDE ME!
        return '';
      }
  
      update (delta) {
        // set initial value
        if (isNullish(this.initialValue)) {
          this.initialValue = this.getProperty().value;
          this.initialUnits = this.getProperty().getUnits();
        }
  
        // if we're past the end time
        if (this.duration > this.maxDuration) {
          // loop for indefinitely repeating animations
          if (this.attribute('repeatCount').value === 'indefinite' ||
            this.attribute('repeatDur').value === 'indefinite') {
            this.duration = 0.0;
          } else if (this.attribute('fill').valueOrDefault('remove') === 'freeze' && !this.frozen) {
            this.frozen = true;
            this.parent.animationFrozen = true;
            this.parent.animationFrozenValue = this.getProperty().value;
          } else if (this.attribute('fill').valueOrDefault('remove') === 'remove' && !this.removed) {
            this.removed = true;
            this.getProperty().value = this.parent.animationFrozen ? this.parent.animationFrozenValue : this.initialValue;
            return true;
          }
          return false;
        }
        this.duration += delta;
  
        // if we're past the begin time
        let updated = false;
        if (this.begin < this.duration) {
          let newValue = this.calcValue(); // tween
  
          if (this.attribute('type').hasValue()) {
            // for transform, etc.
            const type = this.attribute('type').value;
            newValue = type + '(' + newValue + ')';
          }
  
          this.getProperty().value = newValue;
          updated = true;
        }
  
        return updated;
      }
  
      // fraction of duration we've covered
      progress () {
        const ret = {progress: (this.duration - this.begin) / (this.maxDuration - this.begin)};
        if (this.values.hasValue()) {
          const p = ret.progress * (this.values.value.length - 1);
          const lb = Math.floor(p), ub = Math.ceil(p);
          ret.from = new svg.Property('from', parseFloat(this.values.value[lb]));
          ret.to = new svg.Property('to', parseFloat(this.values.value[ub]));
          ret.progress = (p - lb) / (ub - lb);
        } else {
          ret.from = this.from;
          ret.to = this.to;
        }
        return ret;
      }
    };
  
    // animate element
    svg.Element.animate = class extends svg.Element.AnimateBase {
      calcValue () {
        const p = this.progress();
  
        // tween value linearly
        const newValue = p.from.numValue() + (p.to.numValue() - p.from.numValue()) * p.progress;
        return newValue + this.initialUnits;
      }
    };
  
    // animate color element
    svg.Element.animateColor = class extends svg.Element.AnimateBase {
      calcValue () {
        const p = this.progress();
        const from = new RGBColor(p.from.value);
        const to = new RGBColor(p.to.value);
  
        if (from.ok && to.ok) {
          // tween color linearly
          const r = from.r + (to.r - from.r) * p.progress;
          const g = from.g + (to.g - from.g) * p.progress;
          const b = from.b + (to.b - from.b) * p.progress;
          return 'rgb(' + parseInt(r) + ',' + parseInt(g) + ',' + parseInt(b) + ')';
        }
        return this.attribute('from').value;
      }
    };
  
    // animate transform element
    svg.Element.animateTransform = class extends svg.Element.animate {
      calcValue () {
        const p = this.progress();
  
        // tween value linearly
        const from = svg.ToNumberArray(p.from.value);
        const to = svg.ToNumberArray(p.to.value);
        let newValue = '';
        from.forEach((fr, i) => {
          newValue += fr + (to[i] - fr) * p.progress + ' ';
        });
        return newValue;
      }
    };
  
    // font element
    svg.Element.font = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        this.horizAdvX = this.attribute('horiz-adv-x').numValue();
  
        this.isRTL = false;
        this.isArabic = false;
        this.fontFace = null;
        this.missingGlyph = null;
        this.glyphs = [];
        this.children.forEach((child) => {
          if (child.type === 'font-face') {
            this.fontFace = child;
            if (child.style('font-family').hasValue()) {
              svg.Definitions[child.style('font-family').value] = this;
            }
          } else if (child.type === 'missing-glyph') {
            this.missingGlyph = child;
          } else if (child.type === 'glyph') {
            if (child.arabicForm !== '') {
              this.isRTL = true;
              this.isArabic = true;
              if (typeof this.glyphs[child.unicode] === 'undefined') {
                this.glyphs[child.unicode] = [];
              }
              this.glyphs[child.unicode][child.arabicForm] = child;
            } else {
              this.glyphs[child.unicode] = child;
            }
          }
        });
      }
    };
  
    // font-face element
    svg.Element.fontface = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        this.ascent = this.attribute('ascent').value;
        this.descent = this.attribute('descent').value;
        this.unitsPerEm = this.attribute('units-per-em').numValue();
      }
    };
  
    // missing-glyph element
    svg.Element.missingglyph = class extends svg.Element.path {
      constructor (node) {
        super(node);
  
        this.horizAdvX = 0;
      }
    };
  
    // glyph element
    svg.Element.glyph = class extends svg.Element.path {
      constructor (node) {
        super(node);
  
        this.horizAdvX = this.attribute('horiz-adv-x').numValue();
        this.unicode = this.attribute('unicode').value;
        this.arabicForm = this.attribute('arabic-form').value;
      }
    };
  
    // text element
    svg.Element.text = class extends svg.Element.RenderedElementBase {
      constructor (node) {
        super(node, true);
      }
  
      setContext (ctx) {
        super.setContext(ctx);
  
        let textBaseline = this.style('dominant-baseline').toTextBaseline();
        if (isNullish(textBaseline)) textBaseline = this.style('alignment-baseline').toTextBaseline();
        if (!isNullish(textBaseline)) ctx.textBaseline = textBaseline;
      }
  
      getBoundingBox () {
        const x = this.attribute('x').toPixels('x');
        const y = this.attribute('y').toPixels('y');
        const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
        return new svg.BoundingBox(x, y - fontSize, x + Math.floor(fontSize * 2.0 / 3.0) * this.children[0].getText().length, y);
      }
  
      renderChildren (ctx) {
        this.x = this.attribute('x').toPixels('x');
        this.y = this.attribute('y').toPixels('y');
        this.x += this.getAnchorDelta(ctx, this, 0);
        this.children.forEach((child, i) => {
          this.renderChild(ctx, this, i);
        });
      }
  
      getAnchorDelta (ctx, parent, startI) {
        const textAnchor = this.style('text-anchor').valueOrDefault('start');
        if (textAnchor !== 'start') {
          let width = 0;
          for (let i = startI; i < parent.children.length; i++) {
            const child = parent.children[i];
            if (i > startI && child.attribute('x').hasValue()) break; // new group
            width += child.measureTextRecursive(ctx);
          }
          return -1 * (textAnchor === 'end' ? width : width / 2.0);
        }
        return 0;
      }
  
      renderChild (ctx, parent, i) {
        const child = parent.children[i];
        if (child.attribute('x').hasValue()) {
          child.x = child.attribute('x').toPixels('x') + this.getAnchorDelta(ctx, parent, i);
          if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
        } else {
          if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
          if (child.attribute('dx').hasValue()) this.x += child.attribute('dx').toPixels('x');
          child.x = this.x;
        }
        this.x = child.x + child.measureText(ctx);
  
        if (child.attribute('y').hasValue()) {
          child.y = child.attribute('y').toPixels('y');
          if (child.attribute('dy').hasValue()) child.y += child.attribute('dy').toPixels('y');
        } else {
          if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
          if (child.attribute('dy').hasValue()) this.y += child.attribute('dy').toPixels('y');
          child.y = this.y;
        }
        this.y = child.y;
  
        child.render(ctx);
  
        for (let j = 0; j < child.children.length; j++) {
          this.renderChild(ctx, child, j);
        }
      }
    };
  
    // text base
    svg.Element.TextElementBase = class extends svg.Element.RenderedElementBase {
      getGlyph (font, text, i) {
        const c = text[i];
        let glyph = null;
        if (font.isArabic) {
          let arabicForm = 'isolated';
          if ((i === 0 || text[i - 1] === ' ') && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'terminal';
          if (i > 0 && text[i - 1] !== ' ' && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'medial';
          if (i > 0 && text[i - 1] !== ' ' && (i === text.length - 1 || text[i + 1] === ' ')) arabicForm = 'initial';
          if (typeof font.glyphs[c] !== 'undefined') {
            glyph = font.glyphs[c][arabicForm];
            if (isNullish(glyph) && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
          }
        } else {
          glyph = font.glyphs[c];
        }
        if (isNullish(glyph)) glyph = font.missingGlyph;
        return glyph;
      }
  
      renderChildren (ctx) {
        const customFont = this.parent.style('font-family').getDefinition();
        if (!isNullish(customFont)) {
          const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
          const fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
          let text = this.getText();
          if (customFont.isRTL) text = text.split('').reverse().join('');
  
          const dx = svg.ToNumberArray(this.parent.attribute('dx').value);
          for (let i = 0; i < text.length; i++) {
            const glyph = this.getGlyph(customFont, text, i);
            const scale = fontSize / customFont.fontFace.unitsPerEm;
            ctx.translate(this.x, this.y);
            ctx.scale(scale, -scale);
            const lw = ctx.lineWidth;
            ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
            if (fontStyle === 'italic') ctx.transform(1, 0, 0.4, 1, 0, 0);
            glyph.render(ctx);
            if (fontStyle === 'italic') ctx.transform(1, 0, -0.4, 1, 0, 0);
            ctx.lineWidth = lw;
            ctx.scale(1 / scale, -1 / scale);
            ctx.translate(-this.x, -this.y);
  
            this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
            if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
              this.x += dx[i];
            }
          }
          return;
        }
  
        if (ctx.fillStyle !== '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
        if (ctx.strokeStyle !== '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
      }
  
      getText () {
        // OVERRIDE ME
      }
  
      measureTextRecursive (ctx) {
        let width = this.measureText(ctx);
        this.children.forEach((child) => {
          width += child.measureTextRecursive(ctx);
        });
        return width;
      }
  
      measureText (ctx) {
        const customFont = this.parent.style('font-family').getDefinition();
        if (!isNullish(customFont)) {
          const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
          let measure = 0;
          let text = this.getText();
          if (customFont.isRTL) text = text.split('').reverse().join('');
          const dx = svg.ToNumberArray(this.parent.attribute('dx').value);
          for (let i = 0; i < text.length; i++) {
            const glyph = this.getGlyph(customFont, text, i);
            measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
            if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
              measure += dx[i];
            }
          }
          return measure;
        }
  
        const textToMeasure = svg.compressSpaces(this.getText());
        if (!ctx.measureText) return textToMeasure.length * 10;
  
        ctx.save();
        this.setContext(ctx);
        const {width} = ctx.measureText(textToMeasure);
        ctx.restore();
        return width;
      }
    };
  
    // tspan
    svg.Element.tspan = class extends svg.Element.TextElementBase {
      constructor (node) {
        super(node, true);
  
        this.text = node.nodeValue || node.text || '';
      }
      getText () {
        return this.text;
      }
    };
  
    // tref
    svg.Element.tref = class extends svg.Element.TextElementBase {
      getText () {
        const element = this.getHrefAttribute().getDefinition();
        if (!isNullish(element)) return element.children[0].getText();
        return undefined;
      }
    };
  
    // a element
    svg.Element.a = class extends svg.Element.TextElementBase {
      constructor (node) {
        super(node);
  
        this.hasText = true;
        [...node.childNodes].forEach((childNode) => {
          if (childNode.nodeType !== 3) {
            this.hasText = false;
          }
        });
        // this might contain text
        this.text = this.hasText ? node.childNodes[0].nodeValue : '';
      }
  
      getText () {
        return this.text;
      }
  
      renderChildren (ctx) {
        if (this.hasText) {
          // render as text element
          super.renderChildren(ctx);
          const fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
          svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
        } else {
          // render as temporary group
          const g = new svg.Element.g();
          g.children = this.children;
          g.parent = this;
          g.render(ctx);
        }
      }
  
      onclick () {
        window.open(this.getHrefAttribute().value);
      }
  
      onmousemove () {
        svg.ctx.canvas.style.cursor = 'pointer';
      }
    };
  
    // image element
    svg.Element.image = class extends svg.Element.RenderedElementBase {
      constructor (node) {
        super(node);
  
        const href = this.getHrefAttribute().value;
        if (href === '') {
          return;
        }
        this._isSvg = href.match(/\.svg$/);
  
        svg.Images.push(this);
        this.loaded = false;
        if (!this._isSvg) {
          this.img = document.createElement('img');
          if (svg.opts.useCORS === true) {
            this.img.crossOrigin = 'Anonymous';
          }
          this.img.addEventListener('load', () => {
            this.loaded = true;
          });
          this.img.addEventListener('error', () => {
            svg.log('ERROR: image "' + href + '" not found');
            this.loaded = true;
          });
          this.img.src = href;
        } else {
          svg.ajax(href, true).then((img) => { // eslint-disable-line promise/prefer-await-to-then, promise/always-return
            this.img = img;
            this.loaded = true;
          }).catch((err) => { // eslint-disable-line promise/prefer-await-to-callbacks
            this.erred = true;
            console.error('Ajax error for canvg', err); // eslint-disable-line no-console
          });
        }
      }
      renderChildren (ctx) {
        const x = this.attribute('x').toPixels('x');
        const y = this.attribute('y').toPixels('y');
  
        const width = this.attribute('width').toPixels('x');
        const height = this.attribute('height').toPixels('y');
        if (width === 0 || height === 0) return;
  
        ctx.save();
        if (this._isSvg) {
          ctx.drawSvg(this.img, x, y, width, height);
        } else {
          ctx.translate(x, y);
          svg.AspectRatio(
            ctx,
            this.attribute('preserveAspectRatio').value,
            width,
            this.img.width,
            height,
            this.img.height,
            0,
            0
          );
          ctx.drawImage(this.img, 0, 0);
        }
        ctx.restore();
      }
  
      getBoundingBox () {
        const x = this.attribute('x').toPixels('x');
        const y = this.attribute('y').toPixels('y');
        const width = this.attribute('width').toPixels('x');
        const height = this.attribute('height').toPixels('y');
        return new svg.BoundingBox(x, y, x + width, y + height);
      }
    };
  
    // group element
    svg.Element.g = class extends svg.Element.RenderedElementBase {
      getBoundingBox () {
        const bb = new svg.BoundingBox();
        this.children.forEach((child) => {
          bb.addBoundingBox(child.getBoundingBox());
        });
        return bb;
      }
    };
  
    // symbol element
    svg.Element.symbol = class extends svg.Element.RenderedElementBase {
      render (ctx) {
        // NO RENDER
      }
    };
  
    // style element
    svg.Element.style = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        // text, or spaces then CDATA
        let css = '';
        [...node.childNodes].forEach(({nodeValue}) => {
          css += nodeValue;
        });
        // remove comments
        css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/)|(^\s*\/\/.*)/gm, ''); // eslint-disable-line unicorn/no-unsafe-regex
        // replace whitespace
        css = svg.compressSpaces(css);
        const cssDefs = css.split('}');
        cssDefs.forEach((cssDef) => {
          if (svg.trim(cssDef) !== '') {
            let [cssClasses, cssProps] = cssDef.split('{');
            cssClasses = cssClasses.split(',');
            cssProps = cssProps.split(';');
            cssClasses.forEach((cssClass) => {
              cssClass = svg.trim(cssClass);
              if (cssClass !== '') {
                const props = {};
                cssProps.forEach((cssProp) => {
                  const prop = cssProp.indexOf(':');
                  const name = cssProp.substr(0, prop);
                  const value = cssProp.substr(prop + 1, cssProp.length - prop);
                  if (!isNullish(name) && !isNullish(value)) {
                    props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
                  }
                });
                svg.Styles[cssClass] = props;
                if (cssClass === '@font-face') {
                  const fontFamily = props['font-family'].value.replace(/"/g, '');
                  const srcs = props.src.value.split(',');
                  srcs.forEach((src) => {
                    if (src.includes('format("svg")')) {
                      const urlStart = src.indexOf('url');
                      const urlEnd = src.indexOf(')', urlStart);
                      const url = src.substr(urlStart + 5, urlEnd - urlStart - 6);
                      // Can this ajax safely be converted to async?
                      const doc = svg.parseXml(svg.ajax(url));
                      const fonts = doc.getElementsByTagName('font');
                      [...fonts].forEach((font) => {
                        font = svg.CreateElement(font);
                        svg.Definitions[fontFamily] = font;
                      });
                    }
                  });
                }
              }
            });
          }
        });
      }
    };
  
    // use element
    svg.Element.use = class extends svg.Element.RenderedElementBase {
      constructor (node) {
        super(node);
  
        this._el = this.getHrefAttribute().getDefinition();
      }
  
      setContext (ctx) {
        super.setContext(ctx);
        if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
        if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
      }
  
      path (ctx) {
        const {_el: element} = this;
        if (!isNullish(element)) element.path(ctx);
      }
  
      getBoundingBox () {
        const {_el: element} = this;
        if (!isNullish(element)) return element.getBoundingBox();
        return undefined;
      }
  
      renderChildren (ctx) {
        const {_el: element} = this;
        if (!isNullish(element)) {
          let tempSvg = element;
          if (element.type === 'symbol') {
            // render me using a temporary svg element in symbol cases (https://www.w3.org/TR/SVG/struct.html#UseElement)
            tempSvg = new svg.Element.svg();
            tempSvg.type = 'svg';
            tempSvg.attributes.viewBox = new svg.Property('viewBox', element.attribute('viewBox').value);
            tempSvg.attributes.preserveAspectRatio = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
            tempSvg.attributes.overflow = new svg.Property('overflow', element.attribute('overflow').value);
            tempSvg.children = element.children;
          }
          if (tempSvg.type === 'svg') {
            // if symbol or svg, inherit width/height from me
            if (this.attribute('width').hasValue()) tempSvg.attributes.width = new svg.Property('width', this.attribute('width').value);
            if (this.attribute('height').hasValue()) tempSvg.attributes.height = new svg.Property('height', this.attribute('height').value);
          }
          const oldParent = tempSvg.parent;
          tempSvg.parent = null;
          tempSvg.render(ctx);
          tempSvg.parent = oldParent;
        }
      }
    };
  
    // mask element
    svg.Element.mask = class extends svg.Element.ElementBase {
      apply (ctx, element) {
        // render as temp svg
        let x = this.attribute('x').toPixels('x');
        let y = this.attribute('y').toPixels('y');
        let width = this.attribute('width').toPixels('x');
        let height = this.attribute('height').toPixels('y');
  
        if (width === 0 && height === 0) {
          const bb = new svg.BoundingBox();
          this.children.forEach((child) => {
            bb.addBoundingBox(child.getBoundingBox());
          });
          x = Math.floor(bb.x1);
          y = Math.floor(bb.y1);
          width = Math.floor(bb.width());
          height = Math.floor(bb.height());
        }
  
        // temporarily remove mask to avoid recursion
        const mask = element.attribute('mask').value;
        element.attribute('mask').value = '';
  
        const cMask = document.createElement('canvas');
        cMask.width = x + width;
        cMask.height = y + height;
        const maskCtx = cMask.getContext('2d');
        this.renderChildren(maskCtx);
  
        const c = document.createElement('canvas');
        c.width = x + width;
        c.height = y + height;
        const tempCtx = c.getContext('2d');
        element.render(tempCtx);
        tempCtx.globalCompositeOperation = 'destination-in';
        tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
        tempCtx.fillRect(0, 0, x + width, y + height);
  
        ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
        ctx.fillRect(0, 0, x + width, y + height);
  
        // reassign mask
        element.attribute('mask').value = mask;
      }
  
      render (ctx) {
        // NO RENDER
      }
    };
  
    // clip element
    svg.Element.clipPath = class extends svg.Element.ElementBase {
      apply (ctx) {
        this.children.forEach((child) => {
          if (typeof child.path !== 'undefined') {
            let transform = null;
            if (child.attribute('transform').hasValue()) {
              transform = new svg.Transform(child.attribute('transform').value);
              transform.apply(ctx);
            }
            child.path(ctx);
            ctx.clip();
            if (transform) { transform.unapply(ctx); }
          }
        });
      }
      render (ctx) {
        // NO RENDER
      }
    };
  
    // filters
    svg.Element.filter = class extends svg.Element.ElementBase {
      apply (ctx, element) {
        // render as temp svg
        const bb = element.getBoundingBox();
        const x = Math.floor(bb.x1);
        const y = Math.floor(bb.y1);
        const width = Math.floor(bb.width());
        const height = Math.floor(bb.height());
  
        // temporarily remove filter to avoid recursion
        const filter = element.style('filter').value;
        element.style('filter').value = '';
  
        let px = 0, py = 0;
        this.children.forEach((child) => {
          const efd = child.extraFilterDistance || 0;
          px = Math.max(px, efd);
          py = Math.max(py, efd);
        });
  
        const c = document.createElement('canvas');
        c.width = width + 2 * px;
        c.height = height + 2 * py;
        const tempCtx = c.getContext('2d');
        tempCtx.translate(-x + px, -y + py);
        element.render(tempCtx);
  
        // apply filters
        this.children.forEach((child) => {
          child.apply(tempCtx, 0, 0, width + 2 * px, height + 2 * py);
        });
  
        // render on me
        ctx.drawImage(c, 0, 0, width + 2 * px, height + 2 * py, x - px, y - py, width + 2 * px, height + 2 * py);
  
        // reassign filter
        element.style('filter', true).value = filter;
      }
  
      render (ctx) {
        // NO RENDER
      }
    };
  
    svg.Element.feMorphology = class extends svg.Element.ElementBase {
      apply (ctx, x, y, width, height) {
        // TODO: implement
      }
    };
  
    svg.Element.feComposite = class extends svg.Element.ElementBase {
      apply (ctx, x, y, width, height) {
        // TODO: implement
      }
    };
  
    /**
    * @param {Uint8ClampedArray} img
    * @param {Integer} x
    * @param {Integer} y
    * @param {Float} width
    * @param {Float} height
    * @param {Integer} rgba
    * @returns {Integer}
    */
    function imGet (img, x, y, width, height, rgba) {
      return img[y * width * 4 + x * 4 + rgba];
    }
  
    /**
    * @param {Uint8ClampedArray} img
    * @param {Integer} x
    * @param {Integer} y
    * @param {Float} width
    * @param {Float} height
    * @param {Integer} rgba
    * @param {Float} val
    * @returns {void}
    */
    function imSet (img, x, y, width, height, rgba, val) {
      img[y * width * 4 + x * 4 + rgba] = val;
    }
  
    svg.Element.feColorMatrix = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        let matrix = svg.ToNumberArray(this.attribute('values').value);
        switch (this.attribute('type').valueOrDefault('matrix')) { // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
        case 'saturate': {
          const s = matrix[0];
          matrix = [
            0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0,
            0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0,
            0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0,
            0, 0, 0, 1, 0,
            0, 0, 0, 0, 1
          ];
          break;
        } case 'hueRotate': {
          const a = matrix[0] * Math.PI / 180.0;
          const c = function (m1, m2, m3) {
            return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
          };
          matrix = [
            c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0,
            c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0,
            c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0,
            0, 0, 0, 1, 0,
            0, 0, 0, 0, 1
          ];
          break;
        } case 'luminanceToAlpha':
          matrix = [
            0, 0, 0, 0, 0,
            0, 0, 0, 0, 0,
            0, 0, 0, 0, 0,
            0.2125, 0.7154, 0.0721, 0, 0,
            0, 0, 0, 0, 1
          ];
          break;
        }
        this.matrix = matrix;
  
        this._m = (i, v) => {
          const mi = matrix[i];
          return mi * (mi < 0 ? v - 255 : v);
        };
      }
      apply (ctx, x, y, width, height) {
        const {_m: m} = this;
        // assuming x==0 && y==0 for now
        const srcData = ctx.getImageData(0, 0, width, height);
        for (let _y = 0; _y < height; _y++) {
          for (let _x = 0; _x < width; _x++) {
            const r = imGet(srcData.data, _x, _y, width, height, 0);
            const g = imGet(srcData.data, _x, _y, width, height, 1);
            const b = imGet(srcData.data, _x, _y, width, height, 2);
            const a = imGet(srcData.data, _x, _y, width, height, 3);
            imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
            imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
            imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
            imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
          }
        }
        ctx.clearRect(0, 0, width, height);
        ctx.putImageData(srcData, 0, 0);
      }
    };
  
    svg.Element.feGaussianBlur = class extends svg.Element.ElementBase {
      constructor (node) {
        super(node);
  
        this.blurRadius = Math.floor(this.attribute('stdDeviation').numValue());
        this.extraFilterDistance = this.blurRadius;
      }
  
      apply (ctx, x, y, width, height) {
        // Todo: This might not be a problem anymore with out `instanceof` fix
        // StackBlur requires canvas be on document
        ctx.canvas.id = svg.UniqueId();
        ctx.canvas.style.display = 'none';
        document.body.append(ctx.canvas);
        canvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
        ctx.canvas.remove();
      }
    };
  
    // title element, do nothing
    svg.Element.title = class extends svg.Element.ElementBase {
      constructor (node) {
        super();
      }
    };
  
    // desc element, do nothing
    svg.Element.desc = class extends svg.Element.ElementBase {
      constructor (node) {
        super();
      }
    };
  
    svg.Element.MISSING = class extends svg.Element.ElementBase {
      constructor (node) {
        super();
        svg.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
      }
    };
  
    // element factory
    svg.CreateElement = function (node) {
      const className = node.nodeName
        .replace(/^[^:]+:/, '') // remove namespace
        .replace(/-/g, ''); // remove dashes
      let e;
      if (typeof svg.Element[className] !== 'undefined') {
        e = new svg.Element[className](node);
      } else {
        e = new svg.Element.MISSING(node);
      }
  
      e.type = node.nodeName;
      return e;
    };
  
    // load from url
    svg.load = async function (ctx, url) {
      const dom = await svg.ajax(url, true);
      return svg.loadXml(ctx, dom);
    };
  
    // load from xml
    svg.loadXml = function (ctx, xml) {
      return svg.loadXmlDoc(ctx, svg.parseXml(xml));
    };
  
    svg.loadXmlDoc = function (ctx, dom) {
      let res;
      svg.init(ctx);
  
      const mapXY = function (p) {
        let e = ctx.canvas;
        while (e) {
          p.x -= e.offsetLeft;
          p.y -= e.offsetTop;
          e = e.offsetParent;
        }
        if (window.scrollX) p.x += window.scrollX;
        if (window.scrollY) p.y += window.scrollY;
        return p;
      };
  
      // bind mouse
      if (svg.opts.ignoreMouse !== true) {
        ctx.canvas.addEventListener('click', function (e) {
          const args = !isNullish(e)
            ? [e.clientX, e.clientY]
            : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
          const {x, y} = mapXY(new svg.Point(...args));
          svg.Mouse.onclick(x, y);
        });
        ctx.canvas.addEventListener('mousemove', function (e) {
          const args = !isNullish(e)
            ? [e.clientX, e.clientY]
            : [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
          const {x, y} = mapXY(new svg.Point(...args));
          svg.Mouse.onmousemove(x, y);
        });
      }
  
      const e = svg.CreateElement(dom.documentElement);
      e.root = true;
  
      // render loop
      let isFirstRender = true;
      const draw = function (resolve) {
        svg.ViewPort.Clear();
        if (ctx.canvas.parentNode) {
          svg.ViewPort.SetCurrent(
            ctx.canvas.parentNode.clientWidth,
            ctx.canvas.parentNode.clientHeight
          );
        }
  
        if (svg.opts.ignoreDimensions !== true) {
          // set canvas size
          if (e.style('width').hasValue()) {
            ctx.canvas.width = e.style('width').toPixels('x');
            ctx.canvas.style.width = ctx.canvas.width + 'px';
          }
          if (e.style('height').hasValue()) {
            ctx.canvas.height = e.style('height').toPixels('y');
            ctx.canvas.style.height = ctx.canvas.height + 'px';
          }
        }
        let cWidth = ctx.canvas.clientWidth || ctx.canvas.width;
        let cHeight = ctx.canvas.clientHeight || ctx.canvas.height;
        if (svg.opts.ignoreDimensions === true &&
          e.style('width').hasValue() && e.style('height').hasValue()
        ) {
          cWidth = e.style('width').toPixels('x');
          cHeight = e.style('height').toPixels('y');
        }
        svg.ViewPort.SetCurrent(cWidth, cHeight);
  
        if (!isNullish(svg.opts.offsetX)) {
          e.attribute('x', true).value = svg.opts.offsetX;
        }
        if (!isNullish(svg.opts.offsetY)) {
          e.attribute('y', true).value = svg.opts.offsetY;
        }
        if (!isNullish(svg.opts.scaleWidth) || !isNullish(svg.opts.scaleHeight)) {
          const viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
          let xRatio = null, yRatio = null;
  
          if (!isNullish(svg.opts.scaleWidth)) {
            if (e.attribute('width').hasValue()) {
              xRatio = e.attribute('width').toPixels('x') / svg.opts.scaleWidth;
            } else if (!isNaN(viewBox[2])) {
              xRatio = viewBox[2] / svg.opts.scaleWidth;
            }
          }
  
          if (!isNullish(svg.opts.scaleHeight)) {
            if (e.attribute('height').hasValue()) {
              yRatio = e.attribute('height').toPixels('y') / svg.opts.scaleHeight;
            } else if (!isNaN(viewBox[3])) {
              yRatio = viewBox[3] / svg.opts.scaleHeight;
            }
          }
  
          if (isNullish(xRatio)) { xRatio = yRatio; }
          if (isNullish(yRatio)) { yRatio = xRatio; }
  
          e.attribute('width', true).value = svg.opts.scaleWidth;
          e.attribute('height', true).value = svg.opts.scaleHeight;
          e.attribute('viewBox', true).value = '0 0 ' + (cWidth * xRatio) + ' ' + (cHeight * yRatio);
          e.attribute('preserveAspectRatio', true).value = 'none';
        }
  
        // clear and render
        if (svg.opts.ignoreClear !== true) {
          ctx.clearRect(0, 0, cWidth, cHeight);
        }
        e.render(ctx);
        if (isFirstRender) {
          isFirstRender = false;
          resolve(dom);
        }
      };
  
      let waitingForImages = true;
      svg.intervalID = setInterval(function () {
        let needUpdate = false;
  
        if (waitingForImages && svg.ImagesLoaded()) {
          waitingForImages = false;
          needUpdate = true;
        }
  
        // need update from mouse events?
        if (svg.opts.ignoreMouse !== true) {
          needUpdate = needUpdate || svg.Mouse.hasEvents();
        }
  
        // need update from animations?
        if (svg.opts.ignoreAnimation !== true) {
          svg.Animations.forEach((animation) => {
            const needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
            needUpdate = needUpdate || needAnimationUpdate;
          });
        }
  
        // need update from redraw?
        if (typeof svg.opts.forceRedraw === 'function') {
          if (svg.opts.forceRedraw() === true) {
            needUpdate = true;
          }
        }
  
        // render if needed
        if (needUpdate) {
          draw(res);
          svg.Mouse.runEvents(); // run and clear our events
        }
      }, 1000 / svg.FRAMERATE);
      // Todo: Replace with an image loading Promise utility?
      return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
        if (svg.ImagesLoaded()) {
          waitingForImages = false;
          draw(resolve);
          return;
        }
        res = resolve;
      });
    };
  
    svg.stop = () => {
      if (svg.intervalID) {
        clearInterval(svg.intervalID);
      }
    };
  
    svg.Mouse = {
      events: [],
      hasEvents () { return this.events.length !== 0; },
  
      onclick (x, y) {
        this.events.push({
          type: 'onclick', x, y,
          run (e) { if (e.onclick) e.onclick(); }
        });
      },
  
      onmousemove (x, y) {
        this.events.push({
          type: 'onmousemove', x, y,
          run (e) { if (e.onmousemove) e.onmousemove(); }
        });
      },
  
      eventElements: [],
  
      checkPath (element, ctx) {
        this.events.forEach(({x, y}, i) => {
          if (ctx.isPointInPath && ctx.isPointInPath(x, y)) {
            this.eventElements[i] = element;
          }
        });
      },
  
      checkBoundingBox (element, bb) {
        this.events.forEach(({x, y}, i) => {
          if (bb.isPointInBox(x, y)) {
            this.eventElements[i] = element;
          }
        });
      },
  
      runEvents () {
        svg.ctx.canvas.style.cursor = '';
  
        this.events.forEach((e, i) => {
          let element = this.eventElements[i];
          while (element) {
            e.run(element);
            element = element.parent;
          }
        });
  
        // done running, clear
        this.events = [];
        this.eventElements = [];
      }
    };
  
    return svg;
  }
  
  if (typeof CanvasRenderingContext2D !== 'undefined') {
    CanvasRenderingContext2D.prototype.drawSvg = function (s, dx, dy, dw, dh) {
      canvg(this.canvas, s, {
        ignoreMouse: true,
        ignoreAnimation: true,
        ignoreDimensions: true,
        ignoreClear: true,
        offsetX: dx,
        offsetY: dy,
        scaleWidth: dw,
        scaleHeight: dh
      });
    };
  }
  