5272 lines
190 KiB
JavaScript
5272 lines
190 KiB
JavaScript
import requestAnimationFrame from 'raf';
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import RGBColor from 'rgbcolor';
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import { SVGPathData } from 'svg-pathdata';
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import { canvasRGBA } from 'stackblur-canvas';
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/**
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* Options preset for `OffscreenCanvas`.
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* @param config - Preset requirements.
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* @param config.DOMParser - XML/HTML parser from string into DOM Document.
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* @returns Preset object.
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*/
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function offscreen({ DOMParser: DOMParserFallback } = {}) {
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const preset = {
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window: null,
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ignoreAnimation: true,
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ignoreMouse: true,
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DOMParser: DOMParserFallback,
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createCanvas(width, height) {
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return new OffscreenCanvas(width, height);
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},
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async createImage(url) {
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const response = await fetch(url);
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const blob = await response.blob();
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const img = await createImageBitmap(blob);
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return img;
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}
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};
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if (typeof DOMParser !== 'undefined'
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|| typeof DOMParserFallback === 'undefined') {
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Reflect.deleteProperty(preset, 'DOMParser');
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}
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return preset;
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}
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/**
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* Options preset for `node-canvas`.
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* @param config - Preset requirements.
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* @param config.DOMParser - XML/HTML parser from string into DOM Document.
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* @param config.canvas - `node-canvas` exports.
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* @param config.fetch - WHATWG-compatible `fetch` function.
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* @returns Preset object.
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*/
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function node({ DOMParser, canvas, fetch }) {
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return {
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window: null,
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ignoreAnimation: true,
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ignoreMouse: true,
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DOMParser,
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fetch,
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createCanvas: canvas.createCanvas,
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createImage: canvas.loadImage
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};
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}
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var index = /*#__PURE__*/Object.freeze({
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__proto__: null,
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offscreen: offscreen,
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node: node
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});
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/**
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* HTML-safe compress white-spaces.
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* @param str - String to compress.
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* @returns String.
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*/
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function compressSpaces(str) {
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return str.replace(/(?!\u3000)\s+/gm, ' ');
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}
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/**
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* HTML-safe left trim.
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* @param str - String to trim.
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* @returns String.
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*/
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function trimLeft(str) {
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return str.replace(/^[\n \t]+/, '');
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}
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/**
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* HTML-safe right trim.
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* @param str - String to trim.
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* @returns String.
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*/
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function trimRight(str) {
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return str.replace(/[\n \t]+$/, '');
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}
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/**
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* String to numbers array.
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* @param str - Numbers string.
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* @returns Numbers array.
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*/
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function toNumbers(str) {
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const matches = (str || '').match(/-?(\d+(?:\.\d*(?:[eE][+-]?\d+)?)?|\.\d+)(?=\D|$)/gm) || [];
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return matches.map(parseFloat);
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}
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// Microsoft Edge fix
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const allUppercase = /^[A-Z-]+$/;
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/**
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* Normalize attribute name.
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* @param name - Attribute name.
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* @returns Normalized attribute name.
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*/
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function normalizeAttributeName(name) {
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if (allUppercase.test(name)) {
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return name.toLowerCase();
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}
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return name;
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}
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/**
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* Parse external URL.
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* @param url - CSS url string.
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* @returns Parsed URL.
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*/
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function parseExternalUrl(url) {
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// single quotes [2]
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// v double quotes [3]
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// v v no quotes [4]
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// v v v
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const urlMatch = /url\(('([^']+)'|"([^"]+)"|([^'")]+))\)/.exec(url) || [];
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return urlMatch[2] || urlMatch[3] || urlMatch[4];
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}
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/**
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* Transform floats to integers in rgb colors.
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* @param color - Color to normalize.
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* @returns Normalized color.
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*/
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function normalizeColor(color) {
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if (!color.startsWith('rgb')) {
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return color;
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}
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let rgbParts = 3;
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const normalizedColor = color.replace(/\d+(\.\d+)?/g, (num, isFloat) => (rgbParts-- && isFloat
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? String(Math.round(parseFloat(num)))
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: num));
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return normalizedColor;
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}
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// slightly modified version of https://github.com/keeganstreet/specificity/blob/master/specificity.js
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const attributeRegex = /(\[[^\]]+\])/g;
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const idRegex = /(#[^\s+>~.[:]+)/g;
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const classRegex = /(\.[^\s+>~.[:]+)/g;
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const pseudoElementRegex = /(::[^\s+>~.[:]+|:first-line|:first-letter|:before|:after)/gi;
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const pseudoClassWithBracketsRegex = /(:[\w-]+\([^)]*\))/gi;
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const pseudoClassRegex = /(:[^\s+>~.[:]+)/g;
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const elementRegex = /([^\s+>~.[:]+)/g;
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function findSelectorMatch(selector, regex) {
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const matches = regex.exec(selector);
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if (!matches) {
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return [
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selector,
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0
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];
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}
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return [
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selector.replace(regex, ' '),
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matches.length
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];
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}
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/**
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* Measure selector specificity.
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* @param selector - Selector to measure.
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* @returns Specificity.
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*/
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function getSelectorSpecificity(selector) {
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const specificity = [0, 0, 0];
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let currentSelector = selector
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.replace(/:not\(([^)]*)\)/g, ' $1 ')
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.replace(/{[\s\S]*/gm, ' ');
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let delta = 0;
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[currentSelector, delta] = findSelectorMatch(currentSelector, attributeRegex);
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specificity[1] += delta;
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[currentSelector, delta] = findSelectorMatch(currentSelector, idRegex);
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specificity[0] += delta;
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[currentSelector, delta] = findSelectorMatch(currentSelector, classRegex);
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specificity[1] += delta;
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[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoElementRegex);
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specificity[2] += delta;
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[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoClassWithBracketsRegex);
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specificity[1] += delta;
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[currentSelector, delta] = findSelectorMatch(currentSelector, pseudoClassRegex);
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specificity[1] += delta;
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currentSelector = currentSelector
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.replace(/[*\s+>~]/g, ' ')
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.replace(/[#.]/g, ' ');
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[currentSelector, delta] = findSelectorMatch(currentSelector, elementRegex); // lgtm [js/useless-assignment-to-local]
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specificity[2] += delta;
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return specificity.join('');
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}
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const PSEUDO_ZERO = .00000001;
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/**
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* Vector magnitude.
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* @param v
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* @returns Number result.
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*/
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function vectorMagnitude(v) {
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return Math.sqrt(Math.pow(v[0], 2) + Math.pow(v[1], 2));
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}
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/**
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* Ratio between two vectors.
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* @param u
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* @param v
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* @returns Number result.
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*/
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function vectorsRatio(u, v) {
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return (u[0] * v[0] + u[1] * v[1]) / (vectorMagnitude(u) * vectorMagnitude(v));
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}
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/**
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* Angle between two vectors.
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* @param u
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* @param v
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* @returns Number result.
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*/
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function vectorsAngle(u, v) {
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return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(vectorsRatio(u, v));
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}
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function CB1(t) {
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return t * t * t;
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}
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function CB2(t) {
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return 3 * t * t * (1 - t);
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}
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function CB3(t) {
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return 3 * t * (1 - t) * (1 - t);
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}
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function CB4(t) {
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return (1 - t) * (1 - t) * (1 - t);
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}
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function QB1(t) {
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return t * t;
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}
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function QB2(t) {
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return 2 * t * (1 - t);
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}
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function QB3(t) {
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return (1 - t) * (1 - t);
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}
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/* eslint-disable @typescript-eslint/no-unsafe-assignment */
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class Property {
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constructor(document, name, value) {
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this.document = document;
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this.name = name;
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this.value = value;
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this.isNormalizedColor = false;
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}
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static empty(document) {
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return new Property(document, 'EMPTY', '');
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}
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split(separator = ' ') {
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const { document, name } = this;
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return compressSpaces(this.getString())
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.trim()
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.split(separator)
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.map(value => new Property(document, name, value));
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}
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hasValue(zeroIsValue) {
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const { value } = this;
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return value !== null
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&& value !== ''
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&& (zeroIsValue || value !== 0)
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&& typeof value !== 'undefined';
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}
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isString(regexp) {
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const { value } = this;
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const result = typeof value === 'string';
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if (!result || !regexp) {
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return result;
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}
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return regexp.test(value);
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}
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isUrlDefinition() {
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return this.isString(/^url\(/);
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}
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isPixels() {
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if (!this.hasValue()) {
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return false;
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}
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const asString = this.getString();
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switch (true) {
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case asString.endsWith('px'):
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case /^[0-9]+$/.test(asString):
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return true;
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default:
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return false;
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}
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}
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setValue(value) {
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this.value = value;
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return this;
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}
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getValue(def) {
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if (typeof def === 'undefined' || this.hasValue()) {
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return this.value;
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}
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return def;
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}
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getNumber(def) {
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if (!this.hasValue()) {
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if (typeof def === 'undefined') {
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return 0;
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}
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return parseFloat(def);
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}
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const { value } = this;
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let n = parseFloat(value);
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if (this.isString(/%$/)) {
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n /= 100.0;
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}
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return n;
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}
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getString(def) {
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if (typeof def === 'undefined' || this.hasValue()) {
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return typeof this.value === 'undefined'
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? ''
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: String(this.value);
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}
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return String(def);
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}
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getColor(def) {
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let color = this.getString(def);
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if (this.isNormalizedColor) {
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return color;
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}
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this.isNormalizedColor = true;
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color = normalizeColor(color);
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this.value = color;
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return color;
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}
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getDpi() {
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return 96.0; // TODO: compute?
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}
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getRem() {
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return this.document.rootEmSize;
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}
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getEm() {
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return this.document.emSize;
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}
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getUnits() {
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return this.getString().replace(/[0-9.-]/g, '');
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}
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getPixels(axisOrIsFontSize, processPercent = false) {
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if (!this.hasValue()) {
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return 0;
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}
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const [axis, isFontSize] = typeof axisOrIsFontSize === 'boolean'
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? [undefined, axisOrIsFontSize]
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: [axisOrIsFontSize];
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const { viewPort } = this.document.screen;
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switch (true) {
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case this.isString(/vmin$/):
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return this.getNumber()
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/ 100.0
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* Math.min(viewPort.computeSize('x'), viewPort.computeSize('y'));
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case this.isString(/vmax$/):
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return this.getNumber()
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/ 100.0
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* Math.max(viewPort.computeSize('x'), viewPort.computeSize('y'));
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case this.isString(/vw$/):
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return this.getNumber()
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/ 100.0
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* viewPort.computeSize('x');
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case this.isString(/vh$/):
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return this.getNumber()
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/ 100.0
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* viewPort.computeSize('y');
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case this.isString(/rem$/):
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return this.getNumber() * this.getRem( /* viewPort */);
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case this.isString(/em$/):
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return this.getNumber() * this.getEm( /* viewPort */);
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case this.isString(/ex$/):
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return this.getNumber() * this.getEm( /* viewPort */) / 2.0;
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case this.isString(/px$/):
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return this.getNumber();
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case this.isString(/pt$/):
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return this.getNumber() * this.getDpi( /* viewPort */) * (1.0 / 72.0);
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case this.isString(/pc$/):
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return this.getNumber() * 15;
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case this.isString(/cm$/):
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return this.getNumber() * this.getDpi( /* viewPort */) / 2.54;
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case this.isString(/mm$/):
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return this.getNumber() * this.getDpi( /* viewPort */) / 25.4;
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case this.isString(/in$/):
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return this.getNumber() * this.getDpi( /* viewPort */);
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case this.isString(/%$/) && isFontSize:
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return this.getNumber() * this.getEm( /* viewPort */);
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case this.isString(/%$/):
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return this.getNumber() * viewPort.computeSize(axis);
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default: {
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const n = this.getNumber();
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if (processPercent && n < 1.0) {
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return n * viewPort.computeSize(axis);
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}
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return n;
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}
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}
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}
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getMilliseconds() {
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if (!this.hasValue()) {
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return 0;
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}
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if (this.isString(/ms$/)) {
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return this.getNumber();
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}
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return this.getNumber() * 1000;
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}
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getRadians() {
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if (!this.hasValue()) {
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return 0;
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}
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switch (true) {
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case this.isString(/deg$/):
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return this.getNumber() * (Math.PI / 180.0);
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case this.isString(/grad$/):
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return this.getNumber() * (Math.PI / 200.0);
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case this.isString(/rad$/):
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return this.getNumber();
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default:
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return this.getNumber() * (Math.PI / 180.0);
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}
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}
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getDefinition() {
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const asString = this.getString();
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let name = /#([^)'"]+)/.exec(asString);
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if (name) {
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name = name[1];
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}
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if (!name) {
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name = asString;
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}
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return this.document.definitions[name];
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}
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getFillStyleDefinition(element, opacity) {
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let def = this.getDefinition();
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if (!def) {
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return null;
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}
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// gradient
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if (typeof def.createGradient === 'function') {
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return def.createGradient(this.document.ctx, element, opacity);
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}
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// pattern
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if (typeof def.createPattern === 'function') {
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if (def.getHrefAttribute().hasValue()) {
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const patternTransform = def.getAttribute('patternTransform');
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def = def.getHrefAttribute().getDefinition();
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if (patternTransform.hasValue()) {
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def.getAttribute('patternTransform', true).setValue(patternTransform.value);
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}
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}
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return def.createPattern(this.document.ctx, element, opacity);
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}
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return null;
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}
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getTextBaseline() {
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if (!this.hasValue()) {
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return null;
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}
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return Property.textBaselineMapping[this.getString()];
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}
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|
addOpacity(opacity) {
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|
let value = this.getColor();
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|
const len = value.length;
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|
let commas = 0;
|
|
// Simulate old RGBColor version, which can't parse rgba.
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for (let i = 0; i < len; i++) {
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if (value[i] === ',') {
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commas++;
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}
|
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if (commas === 3) {
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break;
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}
|
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}
|
|
if (opacity.hasValue() && this.isString() && commas !== 3) {
|
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const color = new RGBColor(value);
|
|
if (color.ok) {
|
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color.alpha = opacity.getNumber();
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value = color.toRGBA();
|
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}
|
|
}
|
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return new Property(this.document, this.name, value);
|
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}
|
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}
|
|
Property.textBaselineMapping = {
|
|
'baseline': 'alphabetic',
|
|
'before-edge': 'top',
|
|
'text-before-edge': 'top',
|
|
'middle': 'middle',
|
|
'central': 'middle',
|
|
'after-edge': 'bottom',
|
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'text-after-edge': 'bottom',
|
|
'ideographic': 'ideographic',
|
|
'alphabetic': 'alphabetic',
|
|
'hanging': 'hanging',
|
|
'mathematical': 'alphabetic'
|
|
};
|
|
|
|
class ViewPort {
|
|
constructor() {
|
|
this.viewPorts = [];
|
|
}
|
|
clear() {
|
|
this.viewPorts = [];
|
|
}
|
|
setCurrent(width, height) {
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|
this.viewPorts.push({
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width,
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height
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});
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}
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|
removeCurrent() {
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this.viewPorts.pop();
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}
|
|
getCurrent() {
|
|
const { viewPorts } = this;
|
|
return viewPorts[viewPorts.length - 1];
|
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}
|
|
get width() {
|
|
return this.getCurrent().width;
|
|
}
|
|
get height() {
|
|
return this.getCurrent().height;
|
|
}
|
|
computeSize(d) {
|
|
if (typeof d === 'number') {
|
|
return d;
|
|
}
|
|
if (d === 'x') {
|
|
return this.width;
|
|
}
|
|
if (d === 'y') {
|
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return this.height;
|
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}
|
|
return Math.sqrt(Math.pow(this.width, 2) + Math.pow(this.height, 2)) / Math.sqrt(2);
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}
|
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}
|
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|
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class Point {
|
|
constructor(x, y) {
|
|
this.x = x;
|
|
this.y = y;
|
|
}
|
|
static parse(point, defaultValue = 0) {
|
|
const [x = defaultValue, y = defaultValue] = toNumbers(point);
|
|
return new Point(x, y);
|
|
}
|
|
static parseScale(scale, defaultValue = 1) {
|
|
const [x = defaultValue, y = x] = toNumbers(scale);
|
|
return new Point(x, y);
|
|
}
|
|
static parsePath(path) {
|
|
const points = toNumbers(path);
|
|
const len = points.length;
|
|
const pathPoints = [];
|
|
for (let i = 0; i < len; i += 2) {
|
|
pathPoints.push(new Point(points[i], points[i + 1]));
|
|
}
|
|
return pathPoints;
|
|
}
|
|
angleTo(point) {
|
|
return Math.atan2(point.y - this.y, point.x - this.x);
|
|
}
|
|
applyTransform(transform) {
|
|
const { x, y } = this;
|
|
const xp = x * transform[0] + y * transform[2] + transform[4];
|
|
const yp = x * transform[1] + y * transform[3] + transform[5];
|
|
this.x = xp;
|
|
this.y = yp;
|
|
}
|
|
}
|
|
|
|
class Mouse {
|
|
constructor(screen) {
|
|
this.screen = screen;
|
|
this.working = false;
|
|
this.events = [];
|
|
this.eventElements = [];
|
|
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
|
|
this.onClick = this.onClick.bind(this);
|
|
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
|
|
this.onMouseMove = this.onMouseMove.bind(this);
|
|
}
|
|
isWorking() {
|
|
return this.working;
|
|
}
|
|
start() {
|
|
if (this.working) {
|
|
return;
|
|
}
|
|
const { screen, onClick, onMouseMove } = this;
|
|
const canvas = screen.ctx.canvas;
|
|
canvas.onclick = onClick;
|
|
canvas.onmousemove = onMouseMove;
|
|
this.working = true;
|
|
}
|
|
stop() {
|
|
if (!this.working) {
|
|
return;
|
|
}
|
|
const canvas = this.screen.ctx.canvas;
|
|
this.working = false;
|
|
canvas.onclick = null;
|
|
canvas.onmousemove = null;
|
|
}
|
|
hasEvents() {
|
|
return this.working && this.events.length > 0;
|
|
}
|
|
runEvents() {
|
|
if (!this.working) {
|
|
return;
|
|
}
|
|
const { screen: document, events, eventElements } = this;
|
|
const { style } = document.ctx.canvas;
|
|
if (style) {
|
|
style.cursor = '';
|
|
}
|
|
events.forEach(({ run }, i) => {
|
|
let element = eventElements[i];
|
|
while (element) {
|
|
run(element);
|
|
element = element.parent;
|
|
}
|
|
});
|
|
// done running, clear
|
|
this.events = [];
|
|
this.eventElements = [];
|
|
}
|
|
checkPath(element, ctx) {
|
|
if (!this.working || !ctx) {
|
|
return;
|
|
}
|
|
const { events, eventElements } = this;
|
|
events.forEach(({ x, y }, i) => {
|
|
if (!eventElements[i] && ctx.isPointInPath && ctx.isPointInPath(x, y)) {
|
|
eventElements[i] = element;
|
|
}
|
|
});
|
|
}
|
|
checkBoundingBox(element, boundingBox) {
|
|
if (!this.working || !boundingBox) {
|
|
return;
|
|
}
|
|
const { events, eventElements } = this;
|
|
events.forEach(({ x, y }, i) => {
|
|
if (!eventElements[i] && boundingBox.isPointInBox(x, y)) {
|
|
eventElements[i] = element;
|
|
}
|
|
});
|
|
}
|
|
mapXY(x, y) {
|
|
const { window, ctx } = this.screen;
|
|
const point = new Point(x, y);
|
|
let element = ctx.canvas;
|
|
while (element) {
|
|
point.x -= element.offsetLeft;
|
|
point.y -= element.offsetTop;
|
|
element = element.offsetParent;
|
|
}
|
|
if (window.scrollX) {
|
|
point.x += window.scrollX;
|
|
}
|
|
if (window.scrollY) {
|
|
point.y += window.scrollY;
|
|
}
|
|
return point;
|
|
}
|
|
onClick(event) {
|
|
const { x, y } = this.mapXY(event.clientX, event.clientY);
|
|
this.events.push({
|
|
type: 'onclick',
|
|
x,
|
|
y,
|
|
run(eventTarget) {
|
|
if (eventTarget.onClick) {
|
|
eventTarget.onClick();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
onMouseMove(event) {
|
|
const { x, y } = this.mapXY(event.clientX, event.clientY);
|
|
this.events.push({
|
|
type: 'onmousemove',
|
|
x,
|
|
y,
|
|
run(eventTarget) {
|
|
if (eventTarget.onMouseMove) {
|
|
eventTarget.onMouseMove();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
const defaultWindow = typeof window !== 'undefined'
|
|
? window
|
|
: null;
|
|
const defaultFetch$1 = typeof fetch !== 'undefined'
|
|
? fetch.bind(undefined) // `fetch` depends on context: `someObject.fetch(...)` will throw error.
|
|
: null;
|
|
class Screen {
|
|
constructor(ctx, { fetch = defaultFetch$1, window = defaultWindow } = {}) {
|
|
this.ctx = ctx;
|
|
this.FRAMERATE = 30;
|
|
this.MAX_VIRTUAL_PIXELS = 30000;
|
|
this.CLIENT_WIDTH = 800;
|
|
this.CLIENT_HEIGHT = 600;
|
|
this.viewPort = new ViewPort();
|
|
this.mouse = new Mouse(this);
|
|
this.animations = [];
|
|
this.waits = [];
|
|
this.frameDuration = 0;
|
|
this.isReadyLock = false;
|
|
this.isFirstRender = true;
|
|
this.intervalId = null;
|
|
this.window = window;
|
|
this.fetch = fetch;
|
|
}
|
|
wait(checker) {
|
|
this.waits.push(checker);
|
|
}
|
|
ready() {
|
|
// eslint-disable-next-line @typescript-eslint/no-misused-promises
|
|
if (!this.readyPromise) {
|
|
return Promise.resolve();
|
|
}
|
|
return this.readyPromise;
|
|
}
|
|
isReady() {
|
|
if (this.isReadyLock) {
|
|
return true;
|
|
}
|
|
const isReadyLock = this.waits.every(_ => _());
|
|
if (isReadyLock) {
|
|
this.waits = [];
|
|
if (this.resolveReady) {
|
|
this.resolveReady();
|
|
}
|
|
}
|
|
this.isReadyLock = isReadyLock;
|
|
return isReadyLock;
|
|
}
|
|
setDefaults(ctx) {
|
|
// initial values and defaults
|
|
ctx.strokeStyle = 'rgba(0,0,0,0)';
|
|
ctx.lineCap = 'butt';
|
|
ctx.lineJoin = 'miter';
|
|
ctx.miterLimit = 4;
|
|
}
|
|
setViewBox({ document, ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX = 0, minY = 0, refX, refY, clip = false, clipX = 0, clipY = 0 }) {
|
|
// aspect ratio - http://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
|
|
const cleanAspectRatio = compressSpaces(aspectRatio).replace(/^defer\s/, ''); // ignore defer
|
|
const [aspectRatioAlign, aspectRatioMeetOrSlice] = cleanAspectRatio.split(' ');
|
|
const align = aspectRatioAlign || 'xMidYMid';
|
|
const meetOrSlice = aspectRatioMeetOrSlice || 'meet';
|
|
// calculate scale
|
|
const scaleX = width / desiredWidth;
|
|
const scaleY = height / desiredHeight;
|
|
const scaleMin = Math.min(scaleX, scaleY);
|
|
const scaleMax = Math.max(scaleX, scaleY);
|
|
let finalDesiredWidth = desiredWidth;
|
|
let finalDesiredHeight = desiredHeight;
|
|
if (meetOrSlice === 'meet') {
|
|
finalDesiredWidth *= scaleMin;
|
|
finalDesiredHeight *= scaleMin;
|
|
}
|
|
if (meetOrSlice === 'slice') {
|
|
finalDesiredWidth *= scaleMax;
|
|
finalDesiredHeight *= scaleMax;
|
|
}
|
|
const refXProp = new Property(document, 'refX', refX);
|
|
const refYProp = new Property(document, 'refY', refY);
|
|
const hasRefs = refXProp.hasValue() && refYProp.hasValue();
|
|
if (hasRefs) {
|
|
ctx.translate(-scaleMin * refXProp.getPixels('x'), -scaleMin * refYProp.getPixels('y'));
|
|
}
|
|
if (clip) {
|
|
const scaledClipX = scaleMin * clipX;
|
|
const scaledClipY = scaleMin * clipY;
|
|
ctx.beginPath();
|
|
ctx.moveTo(scaledClipX, scaledClipY);
|
|
ctx.lineTo(width, scaledClipY);
|
|
ctx.lineTo(width, height);
|
|
ctx.lineTo(scaledClipX, height);
|
|
ctx.closePath();
|
|
ctx.clip();
|
|
}
|
|
if (!hasRefs) {
|
|
const isMeetMinY = meetOrSlice === 'meet' && scaleMin === scaleY;
|
|
const isSliceMaxY = meetOrSlice === 'slice' && scaleMax === scaleY;
|
|
const isMeetMinX = meetOrSlice === 'meet' && scaleMin === scaleX;
|
|
const isSliceMaxX = meetOrSlice === 'slice' && scaleMax === scaleX;
|
|
if (align.startsWith('xMid') && (isMeetMinY || isSliceMaxY)) {
|
|
ctx.translate(width / 2.0 - finalDesiredWidth / 2.0, 0);
|
|
}
|
|
if (align.endsWith('YMid') && (isMeetMinX || isSliceMaxX)) {
|
|
ctx.translate(0, height / 2.0 - finalDesiredHeight / 2.0);
|
|
}
|
|
if (align.startsWith('xMax') && (isMeetMinY || isSliceMaxY)) {
|
|
ctx.translate(width - finalDesiredWidth, 0);
|
|
}
|
|
if (align.endsWith('YMax') && (isMeetMinX || isSliceMaxX)) {
|
|
ctx.translate(0, height - finalDesiredHeight);
|
|
}
|
|
}
|
|
// scale
|
|
switch (true) {
|
|
case align === 'none':
|
|
ctx.scale(scaleX, scaleY);
|
|
break;
|
|
case meetOrSlice === 'meet':
|
|
ctx.scale(scaleMin, scaleMin);
|
|
break;
|
|
case meetOrSlice === 'slice':
|
|
ctx.scale(scaleMax, scaleMax);
|
|
break;
|
|
}
|
|
// translate
|
|
ctx.translate(-minX, -minY);
|
|
}
|
|
start(element, { enableRedraw = false, ignoreMouse = false, ignoreAnimation = false, ignoreDimensions = false, ignoreClear = false, forceRedraw, scaleWidth, scaleHeight, offsetX, offsetY } = {}) {
|
|
const { FRAMERATE, mouse } = this;
|
|
const frameDuration = 1000 / FRAMERATE;
|
|
this.frameDuration = frameDuration;
|
|
this.readyPromise = new Promise((resolve) => {
|
|
this.resolveReady = resolve;
|
|
});
|
|
if (this.isReady()) {
|
|
this.render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY);
|
|
}
|
|
if (!enableRedraw) {
|
|
return;
|
|
}
|
|
let now = Date.now();
|
|
let then = now;
|
|
let delta = 0;
|
|
const tick = () => {
|
|
now = Date.now();
|
|
delta = now - then;
|
|
if (delta >= frameDuration) {
|
|
then = now - (delta % frameDuration);
|
|
if (this.shouldUpdate(ignoreAnimation, forceRedraw)) {
|
|
this.render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY);
|
|
mouse.runEvents();
|
|
}
|
|
}
|
|
this.intervalId = requestAnimationFrame(tick);
|
|
};
|
|
if (!ignoreMouse) {
|
|
mouse.start();
|
|
}
|
|
this.intervalId = requestAnimationFrame(tick);
|
|
}
|
|
stop() {
|
|
if (this.intervalId) {
|
|
requestAnimationFrame.cancel(this.intervalId);
|
|
this.intervalId = null;
|
|
}
|
|
this.mouse.stop();
|
|
}
|
|
shouldUpdate(ignoreAnimation, forceRedraw) {
|
|
// need update from animations?
|
|
if (!ignoreAnimation) {
|
|
const { frameDuration } = this;
|
|
const shouldUpdate = this.animations.reduce((shouldUpdate, animation) => animation.update(frameDuration) || shouldUpdate, false);
|
|
if (shouldUpdate) {
|
|
return true;
|
|
}
|
|
}
|
|
// need update from redraw?
|
|
if (typeof forceRedraw === 'function' && forceRedraw()) {
|
|
return true;
|
|
}
|
|
if (!this.isReadyLock && this.isReady()) {
|
|
return true;
|
|
}
|
|
// need update from mouse events?
|
|
if (this.mouse.hasEvents()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
render(element, ignoreDimensions, ignoreClear, scaleWidth, scaleHeight, offsetX, offsetY) {
|
|
const { CLIENT_WIDTH, CLIENT_HEIGHT, viewPort, ctx, isFirstRender } = this;
|
|
const canvas = ctx.canvas;
|
|
viewPort.clear();
|
|
if (canvas.width && canvas.height) {
|
|
viewPort.setCurrent(canvas.width, canvas.height);
|
|
}
|
|
else {
|
|
viewPort.setCurrent(CLIENT_WIDTH, CLIENT_HEIGHT);
|
|
}
|
|
const widthStyle = element.getStyle('width');
|
|
const heightStyle = element.getStyle('height');
|
|
if (!ignoreDimensions && (isFirstRender
|
|
|| typeof scaleWidth !== 'number' && typeof scaleHeight !== 'number')) {
|
|
// set canvas size
|
|
if (widthStyle.hasValue()) {
|
|
canvas.width = widthStyle.getPixels('x');
|
|
if (canvas.style) {
|
|
canvas.style.width = `${canvas.width}px`;
|
|
}
|
|
}
|
|
if (heightStyle.hasValue()) {
|
|
canvas.height = heightStyle.getPixels('y');
|
|
if (canvas.style) {
|
|
canvas.style.height = `${canvas.height}px`;
|
|
}
|
|
}
|
|
}
|
|
let cWidth = canvas.clientWidth || canvas.width;
|
|
let cHeight = canvas.clientHeight || canvas.height;
|
|
if (ignoreDimensions && widthStyle.hasValue() && heightStyle.hasValue()) {
|
|
cWidth = widthStyle.getPixels('x');
|
|
cHeight = heightStyle.getPixels('y');
|
|
}
|
|
viewPort.setCurrent(cWidth, cHeight);
|
|
if (typeof offsetX === 'number') {
|
|
element.getAttribute('x', true).setValue(offsetX);
|
|
}
|
|
if (typeof offsetY === 'number') {
|
|
element.getAttribute('y', true).setValue(offsetY);
|
|
}
|
|
if (typeof scaleWidth === 'number'
|
|
|| typeof scaleHeight === 'number') {
|
|
const viewBox = toNumbers(element.getAttribute('viewBox').getString());
|
|
let xRatio = 0;
|
|
let yRatio = 0;
|
|
if (typeof scaleWidth === 'number') {
|
|
const widthStyle = element.getStyle('width');
|
|
if (widthStyle.hasValue()) {
|
|
xRatio = widthStyle.getPixels('x') / scaleWidth;
|
|
}
|
|
else if (!isNaN(viewBox[2])) {
|
|
xRatio = viewBox[2] / scaleWidth;
|
|
}
|
|
}
|
|
if (typeof scaleHeight === 'number') {
|
|
const heightStyle = element.getStyle('height');
|
|
if (heightStyle.hasValue()) {
|
|
yRatio = heightStyle.getPixels('y') / scaleHeight;
|
|
}
|
|
else if (!isNaN(viewBox[3])) {
|
|
yRatio = viewBox[3] / scaleHeight;
|
|
}
|
|
}
|
|
if (!xRatio) {
|
|
xRatio = yRatio;
|
|
}
|
|
if (!yRatio) {
|
|
yRatio = xRatio;
|
|
}
|
|
element.getAttribute('width', true).setValue(scaleWidth);
|
|
element.getAttribute('height', true).setValue(scaleHeight);
|
|
const transformStyle = element.getStyle('transform', true, true);
|
|
transformStyle.setValue(`${transformStyle.getString()} scale(${1.0 / xRatio}, ${1.0 / yRatio})`);
|
|
}
|
|
// clear and render
|
|
if (!ignoreClear) {
|
|
ctx.clearRect(0, 0, cWidth, cHeight);
|
|
}
|
|
element.render(ctx);
|
|
if (isFirstRender) {
|
|
this.isFirstRender = false;
|
|
}
|
|
}
|
|
}
|
|
Screen.defaultWindow = defaultWindow;
|
|
Screen.defaultFetch = defaultFetch$1;
|
|
|
|
const { defaultFetch } = Screen;
|
|
const DefaultDOMParser = typeof DOMParser !== 'undefined'
|
|
? DOMParser
|
|
: null;
|
|
class Parser {
|
|
constructor({ fetch = defaultFetch, DOMParser = DefaultDOMParser } = {}) {
|
|
this.fetch = fetch;
|
|
this.DOMParser = DOMParser;
|
|
}
|
|
async parse(resource) {
|
|
if (resource.startsWith('<')) {
|
|
return this.parseFromString(resource);
|
|
}
|
|
return this.load(resource);
|
|
}
|
|
parseFromString(xml) {
|
|
const parser = new this.DOMParser();
|
|
try {
|
|
return this.checkDocument(parser.parseFromString(xml, 'image/svg+xml'));
|
|
}
|
|
catch (err) {
|
|
return this.checkDocument(parser.parseFromString(xml, 'text/xml'));
|
|
}
|
|
}
|
|
checkDocument(document) {
|
|
const parserError = document.getElementsByTagName('parsererror')[0];
|
|
if (parserError) {
|
|
throw new Error(parserError.textContent);
|
|
}
|
|
return document;
|
|
}
|
|
async load(url) {
|
|
const response = await this.fetch(url);
|
|
const xml = await response.text();
|
|
return this.parseFromString(xml);
|
|
}
|
|
}
|
|
|
|
class Translate {
|
|
constructor(_, point) {
|
|
this.type = 'translate';
|
|
this.point = null;
|
|
this.point = Point.parse(point);
|
|
}
|
|
apply(ctx) {
|
|
const { x, y } = this.point;
|
|
ctx.translate(x || 0.0, y || 0.0);
|
|
}
|
|
unapply(ctx) {
|
|
const { x, y } = this.point;
|
|
ctx.translate(-1.0 * x || 0.0, -1.0 * y || 0.0);
|
|
}
|
|
applyToPoint(point) {
|
|
const { x, y } = this.point;
|
|
point.applyTransform([
|
|
1,
|
|
0,
|
|
0,
|
|
1,
|
|
x || 0.0,
|
|
y || 0.0
|
|
]);
|
|
}
|
|
}
|
|
|
|
class Rotate {
|
|
constructor(document, rotate, transformOrigin) {
|
|
this.type = 'rotate';
|
|
this.angle = null;
|
|
this.originX = null;
|
|
this.originY = null;
|
|
this.cx = 0;
|
|
this.cy = 0;
|
|
const numbers = toNumbers(rotate);
|
|
this.angle = new Property(document, 'angle', numbers[0]);
|
|
this.originX = transformOrigin[0];
|
|
this.originY = transformOrigin[1];
|
|
this.cx = numbers[1] || 0;
|
|
this.cy = numbers[2] || 0;
|
|
}
|
|
apply(ctx) {
|
|
const { cx, cy, originX, originY, angle } = this;
|
|
const tx = cx + originX.getPixels('x');
|
|
const ty = cy + originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.rotate(angle.getRadians());
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
unapply(ctx) {
|
|
const { cx, cy, originX, originY, angle } = this;
|
|
const tx = cx + originX.getPixels('x');
|
|
const ty = cy + originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.rotate(-1.0 * angle.getRadians());
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
applyToPoint(point) {
|
|
const { cx, cy, angle } = this;
|
|
const rad = angle.getRadians();
|
|
point.applyTransform([
|
|
1,
|
|
0,
|
|
0,
|
|
1,
|
|
cx || 0.0,
|
|
cy || 0.0 // this.p.y
|
|
]);
|
|
point.applyTransform([
|
|
Math.cos(rad),
|
|
Math.sin(rad),
|
|
-Math.sin(rad),
|
|
Math.cos(rad),
|
|
0,
|
|
0
|
|
]);
|
|
point.applyTransform([
|
|
1,
|
|
0,
|
|
0,
|
|
1,
|
|
-cx || 0.0,
|
|
-cy || 0.0 // -this.p.y
|
|
]);
|
|
}
|
|
}
|
|
|
|
class Scale {
|
|
constructor(_, scale, transformOrigin) {
|
|
this.type = 'scale';
|
|
this.scale = null;
|
|
this.originX = null;
|
|
this.originY = null;
|
|
const scaleSize = Point.parseScale(scale);
|
|
// Workaround for node-canvas
|
|
if (scaleSize.x === 0
|
|
|| scaleSize.y === 0) {
|
|
scaleSize.x = PSEUDO_ZERO;
|
|
scaleSize.y = PSEUDO_ZERO;
|
|
}
|
|
this.scale = scaleSize;
|
|
this.originX = transformOrigin[0];
|
|
this.originY = transformOrigin[1];
|
|
}
|
|
apply(ctx) {
|
|
const { scale: { x, y }, originX, originY } = this;
|
|
const tx = originX.getPixels('x');
|
|
const ty = originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.scale(x, y || x);
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
unapply(ctx) {
|
|
const { scale: { x, y }, originX, originY } = this;
|
|
const tx = originX.getPixels('x');
|
|
const ty = originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.scale(1.0 / x, 1.0 / y || x);
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
applyToPoint(point) {
|
|
const { x, y } = this.scale;
|
|
point.applyTransform([
|
|
x || 0.0,
|
|
0,
|
|
0,
|
|
y || 0.0,
|
|
0,
|
|
0
|
|
]);
|
|
}
|
|
}
|
|
|
|
class Matrix {
|
|
constructor(_, matrix, transformOrigin) {
|
|
this.type = 'matrix';
|
|
this.matrix = [];
|
|
this.originX = null;
|
|
this.originY = null;
|
|
this.matrix = toNumbers(matrix);
|
|
this.originX = transformOrigin[0];
|
|
this.originY = transformOrigin[1];
|
|
}
|
|
apply(ctx) {
|
|
const { originX, originY, matrix } = this;
|
|
const tx = originX.getPixels('x');
|
|
const ty = originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.transform(matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]);
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
unapply(ctx) {
|
|
const { originX, originY, matrix } = this;
|
|
const a = matrix[0];
|
|
const b = matrix[2];
|
|
const c = matrix[4];
|
|
const d = matrix[1];
|
|
const e = matrix[3];
|
|
const f = matrix[5];
|
|
const g = 0.0;
|
|
const h = 0.0;
|
|
const i = 1.0;
|
|
const det = 1 / (a * (e * i - f * h) - b * (d * i - f * g) + c * (d * h - e * g));
|
|
const tx = originX.getPixels('x');
|
|
const ty = originY.getPixels('y');
|
|
ctx.translate(tx, ty);
|
|
ctx.transform(det * (e * i - f * h), det * (f * g - d * i), det * (c * h - b * i), det * (a * i - c * g), det * (b * f - c * e), det * (c * d - a * f));
|
|
ctx.translate(-tx, -ty);
|
|
}
|
|
applyToPoint(point) {
|
|
point.applyTransform(this.matrix);
|
|
}
|
|
}
|
|
|
|
class Skew extends Matrix {
|
|
constructor(document, skew, transformOrigin) {
|
|
super(document, skew, transformOrigin);
|
|
this.type = 'skew';
|
|
this.angle = null;
|
|
this.angle = new Property(document, 'angle', skew);
|
|
}
|
|
}
|
|
|
|
class SkewX extends Skew {
|
|
constructor(document, skew, transformOrigin) {
|
|
super(document, skew, transformOrigin);
|
|
this.type = 'skewX';
|
|
this.matrix = [
|
|
1,
|
|
0,
|
|
Math.tan(this.angle.getRadians()),
|
|
1,
|
|
0,
|
|
0
|
|
];
|
|
}
|
|
}
|
|
|
|
class SkewY extends Skew {
|
|
constructor(document, skew, transformOrigin) {
|
|
super(document, skew, transformOrigin);
|
|
this.type = 'skewY';
|
|
this.matrix = [
|
|
1,
|
|
Math.tan(this.angle.getRadians()),
|
|
0,
|
|
1,
|
|
0,
|
|
0
|
|
];
|
|
}
|
|
}
|
|
|
|
function parseTransforms(transform) {
|
|
return compressSpaces(transform)
|
|
.trim()
|
|
.replace(/\)([a-zA-Z])/g, ') $1')
|
|
.replace(/\)(\s?,\s?)/g, ') ')
|
|
.split(/\s(?=[a-z])/);
|
|
}
|
|
function parseTransform(transform) {
|
|
const [type, value] = transform.split('(');
|
|
return [
|
|
type.trim(),
|
|
value.trim().replace(')', '')
|
|
];
|
|
}
|
|
class Transform {
|
|
constructor(document, transform, transformOrigin) {
|
|
this.document = document;
|
|
this.transforms = [];
|
|
const data = parseTransforms(transform);
|
|
data.forEach((transform) => {
|
|
if (transform === 'none') {
|
|
return;
|
|
}
|
|
const [type, value] = parseTransform(transform);
|
|
const TransformType = Transform.transformTypes[type];
|
|
if (typeof TransformType !== 'undefined') {
|
|
this.transforms.push(new TransformType(this.document, value, transformOrigin));
|
|
}
|
|
});
|
|
}
|
|
static fromElement(document, element) {
|
|
const transformStyle = element.getStyle('transform', false, true);
|
|
const [transformOriginXProperty, transformOriginYProperty = transformOriginXProperty] = element.getStyle('transform-origin', false, true).split();
|
|
const transformOrigin = [
|
|
transformOriginXProperty,
|
|
transformOriginYProperty
|
|
];
|
|
if (transformStyle.hasValue()) {
|
|
return new Transform(document, transformStyle.getString(), transformOrigin);
|
|
}
|
|
return null;
|
|
}
|
|
apply(ctx) {
|
|
const { transforms } = this;
|
|
const len = transforms.length;
|
|
for (let i = 0; i < len; i++) {
|
|
transforms[i].apply(ctx);
|
|
}
|
|
}
|
|
unapply(ctx) {
|
|
const { transforms } = this;
|
|
const len = transforms.length;
|
|
for (let i = len - 1; i >= 0; i--) {
|
|
transforms[i].unapply(ctx);
|
|
}
|
|
}
|
|
// TODO: applyToPoint unused ... remove?
|
|
applyToPoint(point) {
|
|
const { transforms } = this;
|
|
const len = transforms.length;
|
|
for (let i = 0; i < len; i++) {
|
|
transforms[i].applyToPoint(point);
|
|
}
|
|
}
|
|
}
|
|
Transform.transformTypes = {
|
|
translate: Translate,
|
|
rotate: Rotate,
|
|
scale: Scale,
|
|
matrix: Matrix,
|
|
skewX: SkewX,
|
|
skewY: SkewY
|
|
};
|
|
|
|
class Element {
|
|
constructor(document, node, captureTextNodes = false) {
|
|
this.document = document;
|
|
this.node = node;
|
|
this.captureTextNodes = captureTextNodes;
|
|
this.attributes = {};
|
|
this.styles = {};
|
|
this.stylesSpecificity = {};
|
|
this.animationFrozen = false;
|
|
this.animationFrozenValue = '';
|
|
this.parent = null;
|
|
this.children = [];
|
|
if (!node || node.nodeType !== 1) { // ELEMENT_NODE
|
|
return;
|
|
}
|
|
// add attributes
|
|
Array.from(node.attributes).forEach((attribute) => {
|
|
const nodeName = normalizeAttributeName(attribute.nodeName);
|
|
this.attributes[nodeName] = new Property(document, nodeName, attribute.value);
|
|
});
|
|
this.addStylesFromStyleDefinition();
|
|
// add inline styles
|
|
if (this.getAttribute('style').hasValue()) {
|
|
const styles = this.getAttribute('style')
|
|
.getString()
|
|
.split(';')
|
|
.map(_ => _.trim());
|
|
styles.forEach((style) => {
|
|
if (!style) {
|
|
return;
|
|
}
|
|
const [name, value] = style.split(':').map(_ => _.trim());
|
|
this.styles[name] = new Property(document, name, value);
|
|
});
|
|
}
|
|
const { definitions } = document;
|
|
const id = this.getAttribute('id');
|
|
// add id
|
|
if (id.hasValue()) {
|
|
if (!definitions[id.getString()]) {
|
|
definitions[id.getString()] = this;
|
|
}
|
|
}
|
|
Array.from(node.childNodes).forEach((childNode) => {
|
|
if (childNode.nodeType === 1) {
|
|
this.addChild(childNode); // ELEMENT_NODE
|
|
}
|
|
else if (captureTextNodes && (childNode.nodeType === 3
|
|
|| childNode.nodeType === 4)) {
|
|
const textNode = document.createTextNode(childNode);
|
|
if (textNode.getText().length > 0) {
|
|
this.addChild(textNode); // TEXT_NODE
|
|
}
|
|
}
|
|
});
|
|
}
|
|
getAttribute(name, createIfNotExists = false) {
|
|
const attr = this.attributes[name];
|
|
if (!attr && createIfNotExists) {
|
|
const attr = new Property(this.document, name, '');
|
|
this.attributes[name] = attr;
|
|
return attr;
|
|
}
|
|
return attr || Property.empty(this.document);
|
|
}
|
|
getHrefAttribute() {
|
|
for (const key in this.attributes) {
|
|
if (key === 'href' || key.endsWith(':href')) {
|
|
return this.attributes[key];
|
|
}
|
|
}
|
|
return Property.empty(this.document);
|
|
}
|
|
getStyle(name, createIfNotExists = false, skipAncestors = false) {
|
|
const style = this.styles[name];
|
|
if (style) {
|
|
return style;
|
|
}
|
|
const attr = this.getAttribute(name);
|
|
if (attr?.hasValue()) {
|
|
this.styles[name] = attr; // move up to me to cache
|
|
return attr;
|
|
}
|
|
if (!skipAncestors) {
|
|
const { parent } = this;
|
|
if (parent) {
|
|
const parentStyle = parent.getStyle(name);
|
|
if (parentStyle?.hasValue()) {
|
|
return parentStyle;
|
|
}
|
|
}
|
|
}
|
|
if (createIfNotExists) {
|
|
const style = new Property(this.document, name, '');
|
|
this.styles[name] = style;
|
|
return style;
|
|
}
|
|
return style || Property.empty(this.document);
|
|
}
|
|
render(ctx) {
|
|
// don't render display=none
|
|
// don't render visibility=hidden
|
|
if (this.getStyle('display').getString() === 'none'
|
|
|| this.getStyle('visibility').getString() === 'hidden') {
|
|
return;
|
|
}
|
|
ctx.save();
|
|
if (this.getStyle('mask').hasValue()) { // mask
|
|
const mask = this.getStyle('mask').getDefinition();
|
|
if (mask) {
|
|
this.applyEffects(ctx);
|
|
mask.apply(ctx, this);
|
|
}
|
|
}
|
|
else if (this.getStyle('filter').getValue('none') !== 'none') { // filter
|
|
const filter = this.getStyle('filter').getDefinition();
|
|
if (filter) {
|
|
this.applyEffects(ctx);
|
|
filter.apply(ctx, this);
|
|
}
|
|
}
|
|
else {
|
|
this.setContext(ctx);
|
|
this.renderChildren(ctx);
|
|
this.clearContext(ctx);
|
|
}
|
|
ctx.restore();
|
|
}
|
|
setContext(_) {
|
|
// NO RENDER
|
|
}
|
|
applyEffects(ctx) {
|
|
// transform
|
|
const transform = Transform.fromElement(this.document, this);
|
|
if (transform) {
|
|
transform.apply(ctx);
|
|
}
|
|
// clip
|
|
const clipPathStyleProp = this.getStyle('clip-path', false, true);
|
|
if (clipPathStyleProp.hasValue()) {
|
|
const clip = clipPathStyleProp.getDefinition();
|
|
if (clip) {
|
|
clip.apply(ctx);
|
|
}
|
|
}
|
|
}
|
|
clearContext(_) {
|
|
// NO RENDER
|
|
}
|
|
renderChildren(ctx) {
|
|
this.children.forEach((child) => {
|
|
child.render(ctx);
|
|
});
|
|
}
|
|
addChild(childNode) {
|
|
const child = childNode instanceof Element
|
|
? childNode
|
|
: this.document.createElement(childNode);
|
|
child.parent = this;
|
|
if (!Element.ignoreChildTypes.includes(child.type)) {
|
|
this.children.push(child);
|
|
}
|
|
}
|
|
matchesSelector(selector) {
|
|
const { node } = this;
|
|
if (typeof node.matches === 'function') {
|
|
return node.matches(selector);
|
|
}
|
|
const styleClasses = node.getAttribute?.('class');
|
|
if (!styleClasses || styleClasses === '') {
|
|
return false;
|
|
}
|
|
return styleClasses.split(' ').some(styleClass => `.${styleClass}` === selector);
|
|
}
|
|
addStylesFromStyleDefinition() {
|
|
const { styles, stylesSpecificity } = this.document;
|
|
for (const selector in styles) {
|
|
if (!selector.startsWith('@') && this.matchesSelector(selector)) {
|
|
const style = styles[selector];
|
|
const specificity = stylesSpecificity[selector];
|
|
if (style) {
|
|
for (const name in style) {
|
|
let existingSpecificity = this.stylesSpecificity[name];
|
|
if (typeof existingSpecificity === 'undefined') {
|
|
existingSpecificity = '000';
|
|
}
|
|
if (specificity >= existingSpecificity) {
|
|
this.styles[name] = style[name];
|
|
this.stylesSpecificity[name] = specificity;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
removeStyles(element, ignoreStyles) {
|
|
const toRestore = ignoreStyles.reduce((toRestore, name) => {
|
|
const styleProp = element.getStyle(name);
|
|
if (!styleProp.hasValue()) {
|
|
return toRestore;
|
|
}
|
|
const value = styleProp.getString();
|
|
styleProp.setValue('');
|
|
return [
|
|
...toRestore,
|
|
[name, value]
|
|
];
|
|
}, []);
|
|
return toRestore;
|
|
}
|
|
restoreStyles(element, styles) {
|
|
styles.forEach(([name, value]) => {
|
|
element.getStyle(name, true).setValue(value);
|
|
});
|
|
}
|
|
isFirstChild() {
|
|
return this.parent?.children.indexOf(this) === 0;
|
|
}
|
|
}
|
|
Element.ignoreChildTypes = [
|
|
'title'
|
|
];
|
|
|
|
class UnknownElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
}
|
|
}
|
|
|
|
function wrapFontFamily(fontFamily) {
|
|
const trimmed = fontFamily.trim();
|
|
return /^('|")/.test(trimmed)
|
|
? trimmed
|
|
: `"${trimmed}"`;
|
|
}
|
|
function prepareFontFamily(fontFamily) {
|
|
return typeof process === 'undefined'
|
|
? fontFamily
|
|
: fontFamily
|
|
.trim()
|
|
.split(',')
|
|
.map(wrapFontFamily)
|
|
.join(',');
|
|
}
|
|
/**
|
|
* https://developer.mozilla.org/en-US/docs/Web/CSS/font-style
|
|
* @param fontStyle
|
|
* @returns CSS font style.
|
|
*/
|
|
function prepareFontStyle(fontStyle) {
|
|
if (!fontStyle) {
|
|
return '';
|
|
}
|
|
const targetFontStyle = fontStyle.trim().toLowerCase();
|
|
switch (targetFontStyle) {
|
|
case 'normal':
|
|
case 'italic':
|
|
case 'oblique':
|
|
case 'inherit':
|
|
case 'initial':
|
|
case 'unset':
|
|
return targetFontStyle;
|
|
default:
|
|
if (/^oblique\s+(-|)\d+deg$/.test(targetFontStyle)) {
|
|
return targetFontStyle;
|
|
}
|
|
return '';
|
|
}
|
|
}
|
|
/**
|
|
* https://developer.mozilla.org/en-US/docs/Web/CSS/font-weight
|
|
* @param fontWeight
|
|
* @returns CSS font weight.
|
|
*/
|
|
function prepareFontWeight(fontWeight) {
|
|
if (!fontWeight) {
|
|
return '';
|
|
}
|
|
const targetFontWeight = fontWeight.trim().toLowerCase();
|
|
switch (targetFontWeight) {
|
|
case 'normal':
|
|
case 'bold':
|
|
case 'lighter':
|
|
case 'bolder':
|
|
case 'inherit':
|
|
case 'initial':
|
|
case 'unset':
|
|
return targetFontWeight;
|
|
default:
|
|
if (/^[\d.]+$/.test(targetFontWeight)) {
|
|
return targetFontWeight;
|
|
}
|
|
return '';
|
|
}
|
|
}
|
|
class Font {
|
|
constructor(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
|
|
const inheritFont = inherit
|
|
? typeof inherit === 'string'
|
|
? Font.parse(inherit)
|
|
: inherit
|
|
: {};
|
|
this.fontFamily = fontFamily || inheritFont.fontFamily;
|
|
this.fontSize = fontSize || inheritFont.fontSize;
|
|
this.fontStyle = fontStyle || inheritFont.fontStyle;
|
|
this.fontWeight = fontWeight || inheritFont.fontWeight;
|
|
this.fontVariant = fontVariant || inheritFont.fontVariant;
|
|
}
|
|
static parse(font = '', inherit) {
|
|
let fontStyle = '';
|
|
let fontVariant = '';
|
|
let fontWeight = '';
|
|
let fontSize = '';
|
|
let fontFamily = '';
|
|
const parts = compressSpaces(font).trim().split(' ');
|
|
const set = {
|
|
fontSize: false,
|
|
fontStyle: false,
|
|
fontWeight: false,
|
|
fontVariant: false
|
|
};
|
|
parts.forEach((part) => {
|
|
switch (true) {
|
|
case !set.fontStyle && Font.styles.includes(part):
|
|
if (part !== 'inherit') {
|
|
fontStyle = part;
|
|
}
|
|
set.fontStyle = true;
|
|
break;
|
|
case !set.fontVariant && Font.variants.includes(part):
|
|
if (part !== 'inherit') {
|
|
fontVariant = part;
|
|
}
|
|
set.fontStyle = true;
|
|
set.fontVariant = true;
|
|
break;
|
|
case !set.fontWeight && Font.weights.includes(part):
|
|
if (part !== 'inherit') {
|
|
fontWeight = part;
|
|
}
|
|
set.fontStyle = true;
|
|
set.fontVariant = true;
|
|
set.fontWeight = true;
|
|
break;
|
|
case !set.fontSize:
|
|
if (part !== 'inherit') {
|
|
[fontSize] = part.split('/');
|
|
}
|
|
set.fontStyle = true;
|
|
set.fontVariant = true;
|
|
set.fontWeight = true;
|
|
set.fontSize = true;
|
|
break;
|
|
default:
|
|
if (part !== 'inherit') {
|
|
fontFamily += part;
|
|
}
|
|
}
|
|
});
|
|
return new Font(fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit);
|
|
}
|
|
toString() {
|
|
return [
|
|
prepareFontStyle(this.fontStyle),
|
|
this.fontVariant,
|
|
prepareFontWeight(this.fontWeight),
|
|
this.fontSize,
|
|
// Wrap fontFamily only on nodejs and only for canvas.ctx
|
|
prepareFontFamily(this.fontFamily)
|
|
].join(' ').trim();
|
|
}
|
|
}
|
|
Font.styles = 'normal|italic|oblique|inherit';
|
|
Font.variants = 'normal|small-caps|inherit';
|
|
Font.weights = 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit';
|
|
|
|
class BoundingBox {
|
|
constructor(x1 = Number.NaN, y1 = Number.NaN, x2 = Number.NaN, y2 = Number.NaN) {
|
|
this.x1 = x1;
|
|
this.y1 = y1;
|
|
this.x2 = x2;
|
|
this.y2 = y2;
|
|
this.addPoint(x1, y1);
|
|
this.addPoint(x2, y2);
|
|
}
|
|
get x() {
|
|
return this.x1;
|
|
}
|
|
get y() {
|
|
return this.y1;
|
|
}
|
|
get width() {
|
|
return this.x2 - this.x1;
|
|
}
|
|
get height() {
|
|
return this.y2 - this.y1;
|
|
}
|
|
addPoint(x, y) {
|
|
if (typeof x !== 'undefined') {
|
|
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 (typeof y !== 'undefined') {
|
|
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(boundingBox) {
|
|
if (!boundingBox) {
|
|
return;
|
|
}
|
|
const { x1, y1, x2, y2 } = boundingBox;
|
|
this.addPoint(x1, y1);
|
|
this.addPoint(x2, y2);
|
|
}
|
|
sumCubic(t, p0, p1, p2, p3) {
|
|
return (Math.pow(1 - t, 3) * p0
|
|
+ 3 * Math.pow(1 - t, 2) * t * p1
|
|
+ 3 * (1 - t) * Math.pow(t, 2) * p2
|
|
+ Math.pow(t, 3) * p3);
|
|
}
|
|
bezierCurveAdd(forX, p0, p1, p2, p3) {
|
|
const b = 6 * p0 - 12 * p1 + 6 * p2;
|
|
const a = -3 * p0 + 9 * p1 - 9 * p2 + 3 * p3;
|
|
const c = 3 * p1 - 3 * p0;
|
|
if (a === 0) {
|
|
if (b === 0) {
|
|
return;
|
|
}
|
|
const t = -c / b;
|
|
if (0 < t && t < 1) {
|
|
if (forX) {
|
|
this.addX(this.sumCubic(t, p0, p1, p2, p3));
|
|
}
|
|
else {
|
|
this.addY(this.sumCubic(t, p0, p1, p2, p3));
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
const b2ac = Math.pow(b, 2) - 4 * c * a;
|
|
if (b2ac < 0) {
|
|
return;
|
|
}
|
|
const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
|
|
if (0 < t1 && t1 < 1) {
|
|
if (forX) {
|
|
this.addX(this.sumCubic(t1, p0, p1, p2, p3));
|
|
}
|
|
else {
|
|
this.addY(this.sumCubic(t1, p0, p1, p2, p3));
|
|
}
|
|
}
|
|
const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
|
|
if (0 < t2 && t2 < 1) {
|
|
if (forX) {
|
|
this.addX(this.sumCubic(t2, p0, p1, p2, p3));
|
|
}
|
|
else {
|
|
this.addY(this.sumCubic(t2, p0, p1, p2, p3));
|
|
}
|
|
}
|
|
}
|
|
// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
|
|
addBezierCurve(p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
|
|
this.addPoint(p0x, p0y);
|
|
this.addPoint(p3x, p3y);
|
|
this.bezierCurveAdd(true, p0x, p1x, p2x, p3x);
|
|
this.bezierCurveAdd(false, p0y, p1y, p2y, p3y);
|
|
}
|
|
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);
|
|
}
|
|
isPointInBox(x, y) {
|
|
const { x1, y1, x2, y2 } = this;
|
|
return (x1 <= x
|
|
&& x <= x2
|
|
&& y1 <= y
|
|
&& y <= y2);
|
|
}
|
|
}
|
|
|
|
class PathParser extends SVGPathData {
|
|
constructor(path) {
|
|
super(path
|
|
// Fix spaces after signs.
|
|
.replace(/([+\-.])\s+/gm, '$1')
|
|
// Remove invalid part.
|
|
.replace(/[^MmZzLlHhVvCcSsQqTtAae\d\s.,+-].*/g, ''));
|
|
this.control = null;
|
|
this.start = null;
|
|
this.current = null;
|
|
this.command = null;
|
|
this.commands = this.commands;
|
|
this.i = -1;
|
|
this.previousCommand = null;
|
|
this.points = [];
|
|
this.angles = [];
|
|
}
|
|
reset() {
|
|
this.i = -1;
|
|
this.command = null;
|
|
this.previousCommand = null;
|
|
this.start = new Point(0, 0);
|
|
this.control = new Point(0, 0);
|
|
this.current = new Point(0, 0);
|
|
this.points = [];
|
|
this.angles = [];
|
|
}
|
|
isEnd() {
|
|
const { i, commands } = this;
|
|
return i >= commands.length - 1;
|
|
}
|
|
next() {
|
|
const command = this.commands[++this.i];
|
|
this.previousCommand = this.command;
|
|
this.command = command;
|
|
return command;
|
|
}
|
|
getPoint(xProp = 'x', yProp = 'y') {
|
|
const point = new Point(this.command[xProp], this.command[yProp]);
|
|
return this.makeAbsolute(point);
|
|
}
|
|
getAsControlPoint(xProp, yProp) {
|
|
const point = this.getPoint(xProp, yProp);
|
|
this.control = point;
|
|
return point;
|
|
}
|
|
getAsCurrentPoint(xProp, yProp) {
|
|
const point = this.getPoint(xProp, yProp);
|
|
this.current = point;
|
|
return point;
|
|
}
|
|
getReflectedControlPoint() {
|
|
const previousCommand = this.previousCommand.type;
|
|
if (previousCommand !== SVGPathData.CURVE_TO
|
|
&& previousCommand !== SVGPathData.SMOOTH_CURVE_TO
|
|
&& previousCommand !== SVGPathData.QUAD_TO
|
|
&& previousCommand !== SVGPathData.SMOOTH_QUAD_TO) {
|
|
return this.current;
|
|
}
|
|
// reflect point
|
|
const { current: { x: cx, y: cy }, control: { x: ox, y: oy } } = this;
|
|
const point = new Point(2 * cx - ox, 2 * cy - oy);
|
|
return point;
|
|
}
|
|
makeAbsolute(point) {
|
|
if (this.command.relative) {
|
|
const { x, y } = this.current;
|
|
point.x += x;
|
|
point.y += y;
|
|
}
|
|
return point;
|
|
}
|
|
addMarker(point, from, priorTo) {
|
|
const { points, angles } = this;
|
|
// if the last angle isn't filled in because we didn't have this point yet ...
|
|
if (priorTo && angles.length > 0 && !angles[angles.length - 1]) {
|
|
angles[angles.length - 1] = points[points.length - 1].angleTo(priorTo);
|
|
}
|
|
this.addMarkerAngle(point, from ? from.angleTo(point) : null);
|
|
}
|
|
addMarkerAngle(point, angle) {
|
|
this.points.push(point);
|
|
this.angles.push(angle);
|
|
}
|
|
getMarkerPoints() {
|
|
return this.points;
|
|
}
|
|
getMarkerAngles() {
|
|
const { angles } = this;
|
|
const len = angles.length;
|
|
for (let i = 0; i < len; i++) {
|
|
if (!angles[i]) {
|
|
for (let j = i + 1; j < len; j++) {
|
|
if (angles[j]) {
|
|
angles[i] = angles[j];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return angles;
|
|
}
|
|
}
|
|
|
|
class RenderedElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.modifiedEmSizeStack = false;
|
|
}
|
|
calculateOpacity() {
|
|
let opacity = 1.0;
|
|
// eslint-disable-next-line @typescript-eslint/no-this-alias, consistent-this
|
|
let element = this;
|
|
while (element) {
|
|
const opacityStyle = element.getStyle('opacity', false, true); // no ancestors on style call
|
|
if (opacityStyle.hasValue(true)) {
|
|
opacity *= opacityStyle.getNumber();
|
|
}
|
|
element = element.parent;
|
|
}
|
|
return opacity;
|
|
}
|
|
setContext(ctx, fromMeasure = false) {
|
|
if (!fromMeasure) { // causes stack overflow when measuring text with gradients
|
|
// fill
|
|
const fillStyleProp = this.getStyle('fill');
|
|
const fillOpacityStyleProp = this.getStyle('fill-opacity');
|
|
const strokeStyleProp = this.getStyle('stroke');
|
|
const strokeOpacityProp = this.getStyle('stroke-opacity');
|
|
if (fillStyleProp.isUrlDefinition()) {
|
|
const fillStyle = fillStyleProp.getFillStyleDefinition(this, fillOpacityStyleProp);
|
|
if (fillStyle) {
|
|
ctx.fillStyle = fillStyle;
|
|
}
|
|
}
|
|
else if (fillStyleProp.hasValue()) {
|
|
if (fillStyleProp.getString() === 'currentColor') {
|
|
fillStyleProp.setValue(this.getStyle('color').getColor());
|
|
}
|
|
const fillStyle = fillStyleProp.getColor();
|
|
if (fillStyle !== 'inherit') {
|
|
ctx.fillStyle = fillStyle === 'none'
|
|
? 'rgba(0,0,0,0)'
|
|
: fillStyle;
|
|
}
|
|
}
|
|
if (fillOpacityStyleProp.hasValue()) {
|
|
const fillStyle = new Property(this.document, 'fill', ctx.fillStyle)
|
|
.addOpacity(fillOpacityStyleProp)
|
|
.getColor();
|
|
ctx.fillStyle = fillStyle;
|
|
}
|
|
// stroke
|
|
if (strokeStyleProp.isUrlDefinition()) {
|
|
const strokeStyle = strokeStyleProp.getFillStyleDefinition(this, strokeOpacityProp);
|
|
if (strokeStyle) {
|
|
ctx.strokeStyle = strokeStyle;
|
|
}
|
|
}
|
|
else if (strokeStyleProp.hasValue()) {
|
|
if (strokeStyleProp.getString() === 'currentColor') {
|
|
strokeStyleProp.setValue(this.getStyle('color').getColor());
|
|
}
|
|
const strokeStyle = strokeStyleProp.getString();
|
|
if (strokeStyle !== 'inherit') {
|
|
ctx.strokeStyle = strokeStyle === 'none'
|
|
? 'rgba(0,0,0,0)'
|
|
: strokeStyle;
|
|
}
|
|
}
|
|
if (strokeOpacityProp.hasValue()) {
|
|
const strokeStyle = new Property(this.document, 'stroke', ctx.strokeStyle)
|
|
.addOpacity(strokeOpacityProp)
|
|
.getString();
|
|
ctx.strokeStyle = strokeStyle;
|
|
}
|
|
const strokeWidthStyleProp = this.getStyle('stroke-width');
|
|
if (strokeWidthStyleProp.hasValue()) {
|
|
const newLineWidth = strokeWidthStyleProp.getPixels();
|
|
ctx.lineWidth = !newLineWidth
|
|
? PSEUDO_ZERO // browsers don't respect 0 (or node-canvas? :-)
|
|
: newLineWidth;
|
|
}
|
|
const strokeLinecapStyleProp = this.getStyle('stroke-linecap');
|
|
const strokeLinejoinStyleProp = this.getStyle('stroke-linejoin');
|
|
const strokeMiterlimitProp = this.getStyle('stroke-miterlimit');
|
|
// NEED TEST
|
|
// const pointOrderStyleProp = this.getStyle('paint-order');
|
|
const strokeDasharrayStyleProp = this.getStyle('stroke-dasharray');
|
|
const strokeDashoffsetProp = this.getStyle('stroke-dashoffset');
|
|
if (strokeLinecapStyleProp.hasValue()) {
|
|
ctx.lineCap = strokeLinecapStyleProp.getString();
|
|
}
|
|
if (strokeLinejoinStyleProp.hasValue()) {
|
|
ctx.lineJoin = strokeLinejoinStyleProp.getString();
|
|
}
|
|
if (strokeMiterlimitProp.hasValue()) {
|
|
ctx.miterLimit = strokeMiterlimitProp.getNumber();
|
|
}
|
|
// NEED TEST
|
|
// if (pointOrderStyleProp.hasValue()) {
|
|
// // ?
|
|
// ctx.paintOrder = pointOrderStyleProp.getValue();
|
|
// }
|
|
if (strokeDasharrayStyleProp.hasValue() && strokeDasharrayStyleProp.getString() !== 'none') {
|
|
const gaps = toNumbers(strokeDasharrayStyleProp.getString());
|
|
if (typeof ctx.setLineDash !== 'undefined') {
|
|
ctx.setLineDash(gaps);
|
|
}
|
|
else
|
|
// @ts-expect-error Handle browser prefix.
|
|
if (typeof ctx.webkitLineDash !== 'undefined') {
|
|
// @ts-expect-error Handle browser prefix.
|
|
ctx.webkitLineDash = gaps;
|
|
}
|
|
else
|
|
// @ts-expect-error Handle browser prefix.
|
|
if (typeof ctx.mozDash !== 'undefined' && !(gaps.length === 1 && gaps[0] === 0)) {
|
|
// @ts-expect-error Handle browser prefix.
|
|
ctx.mozDash = gaps;
|
|
}
|
|
const offset = strokeDashoffsetProp.getPixels();
|
|
if (typeof ctx.lineDashOffset !== 'undefined') {
|
|
ctx.lineDashOffset = offset;
|
|
}
|
|
else
|
|
// @ts-expect-error Handle browser prefix.
|
|
if (typeof ctx.webkitLineDashOffset !== 'undefined') {
|
|
// @ts-expect-error Handle browser prefix.
|
|
ctx.webkitLineDashOffset = offset;
|
|
}
|
|
else
|
|
// @ts-expect-error Handle browser prefix.
|
|
if (typeof ctx.mozDashOffset !== 'undefined') {
|
|
// @ts-expect-error Handle browser prefix.
|
|
ctx.mozDashOffset = offset;
|
|
}
|
|
}
|
|
}
|
|
// font
|
|
this.modifiedEmSizeStack = false;
|
|
if (typeof ctx.font !== 'undefined') {
|
|
const fontStyleProp = this.getStyle('font');
|
|
const fontStyleStyleProp = this.getStyle('font-style');
|
|
const fontVariantStyleProp = this.getStyle('font-variant');
|
|
const fontWeightStyleProp = this.getStyle('font-weight');
|
|
const fontSizeStyleProp = this.getStyle('font-size');
|
|
const fontFamilyStyleProp = this.getStyle('font-family');
|
|
const font = new Font(fontStyleStyleProp.getString(), fontVariantStyleProp.getString(), fontWeightStyleProp.getString(), fontSizeStyleProp.hasValue()
|
|
? `${fontSizeStyleProp.getPixels(true)}px`
|
|
: '', fontFamilyStyleProp.getString(), Font.parse(fontStyleProp.getString(), ctx.font));
|
|
fontStyleStyleProp.setValue(font.fontStyle);
|
|
fontVariantStyleProp.setValue(font.fontVariant);
|
|
fontWeightStyleProp.setValue(font.fontWeight);
|
|
fontSizeStyleProp.setValue(font.fontSize);
|
|
fontFamilyStyleProp.setValue(font.fontFamily);
|
|
ctx.font = font.toString();
|
|
if (fontSizeStyleProp.isPixels()) {
|
|
this.document.emSize = fontSizeStyleProp.getPixels();
|
|
this.modifiedEmSizeStack = true;
|
|
}
|
|
}
|
|
if (!fromMeasure) {
|
|
// effects
|
|
this.applyEffects(ctx);
|
|
// opacity
|
|
ctx.globalAlpha = this.calculateOpacity();
|
|
}
|
|
}
|
|
clearContext(ctx) {
|
|
super.clearContext(ctx);
|
|
if (this.modifiedEmSizeStack) {
|
|
this.document.popEmSize();
|
|
}
|
|
}
|
|
}
|
|
|
|
class PathElement extends RenderedElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'path';
|
|
this.pathParser = null;
|
|
this.pathParser = new PathParser(this.getAttribute('d').getString());
|
|
}
|
|
path(ctx) {
|
|
const { pathParser } = this;
|
|
const boundingBox = new BoundingBox();
|
|
pathParser.reset();
|
|
if (ctx) {
|
|
ctx.beginPath();
|
|
}
|
|
while (!pathParser.isEnd()) {
|
|
switch (pathParser.next().type) {
|
|
case PathParser.MOVE_TO:
|
|
this.pathM(ctx, boundingBox);
|
|
break;
|
|
case PathParser.LINE_TO:
|
|
this.pathL(ctx, boundingBox);
|
|
break;
|
|
case PathParser.HORIZ_LINE_TO:
|
|
this.pathH(ctx, boundingBox);
|
|
break;
|
|
case PathParser.VERT_LINE_TO:
|
|
this.pathV(ctx, boundingBox);
|
|
break;
|
|
case PathParser.CURVE_TO:
|
|
this.pathC(ctx, boundingBox);
|
|
break;
|
|
case PathParser.SMOOTH_CURVE_TO:
|
|
this.pathS(ctx, boundingBox);
|
|
break;
|
|
case PathParser.QUAD_TO:
|
|
this.pathQ(ctx, boundingBox);
|
|
break;
|
|
case PathParser.SMOOTH_QUAD_TO:
|
|
this.pathT(ctx, boundingBox);
|
|
break;
|
|
case PathParser.ARC:
|
|
this.pathA(ctx, boundingBox);
|
|
break;
|
|
case PathParser.CLOSE_PATH:
|
|
this.pathZ(ctx, boundingBox);
|
|
break;
|
|
}
|
|
}
|
|
return boundingBox;
|
|
}
|
|
getBoundingBox(_) {
|
|
return this.path();
|
|
}
|
|
getMarkers() {
|
|
const { pathParser } = this;
|
|
const points = pathParser.getMarkerPoints();
|
|
const angles = pathParser.getMarkerAngles();
|
|
const markers = points.map((point, i) => [
|
|
point,
|
|
angles[i]
|
|
]);
|
|
return markers;
|
|
}
|
|
renderChildren(ctx) {
|
|
this.path(ctx);
|
|
this.document.screen.mouse.checkPath(this, ctx);
|
|
const fillRuleStyleProp = this.getStyle('fill-rule');
|
|
if (ctx.fillStyle !== '') {
|
|
if (fillRuleStyleProp.getString('inherit') !== 'inherit') {
|
|
ctx.fill(fillRuleStyleProp.getString());
|
|
}
|
|
else {
|
|
ctx.fill();
|
|
}
|
|
}
|
|
if (ctx.strokeStyle !== '') {
|
|
if (this.getAttribute('vector-effect').getString() === 'non-scaling-stroke') {
|
|
ctx.save();
|
|
ctx.setTransform(1, 0, 0, 1, 0, 0);
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
}
|
|
else {
|
|
ctx.stroke();
|
|
}
|
|
}
|
|
const markers = this.getMarkers();
|
|
if (markers) {
|
|
const markersLastIndex = markers.length - 1;
|
|
const markerStartStyleProp = this.getStyle('marker-start');
|
|
const markerMidStyleProp = this.getStyle('marker-mid');
|
|
const markerEndStyleProp = this.getStyle('marker-end');
|
|
if (markerStartStyleProp.isUrlDefinition()) {
|
|
const marker = markerStartStyleProp.getDefinition();
|
|
const [point, angle] = markers[0];
|
|
marker.render(ctx, point, angle);
|
|
}
|
|
if (markerMidStyleProp.isUrlDefinition()) {
|
|
const marker = markerMidStyleProp.getDefinition();
|
|
for (let i = 1; i < markersLastIndex; i++) {
|
|
const [point, angle] = markers[i];
|
|
marker.render(ctx, point, angle);
|
|
}
|
|
}
|
|
if (markerEndStyleProp.isUrlDefinition()) {
|
|
const marker = markerEndStyleProp.getDefinition();
|
|
const [point, angle] = markers[markersLastIndex];
|
|
marker.render(ctx, point, angle);
|
|
}
|
|
}
|
|
}
|
|
static pathM(pathParser) {
|
|
const point = pathParser.getAsCurrentPoint();
|
|
pathParser.start = pathParser.current;
|
|
return {
|
|
point
|
|
};
|
|
}
|
|
pathM(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { point } = PathElement.pathM(pathParser);
|
|
const { x, y } = point;
|
|
pathParser.addMarker(point);
|
|
boundingBox.addPoint(x, y);
|
|
if (ctx) {
|
|
ctx.moveTo(x, y);
|
|
}
|
|
}
|
|
static pathL(pathParser) {
|
|
const { current } = pathParser;
|
|
const point = pathParser.getAsCurrentPoint();
|
|
return {
|
|
current,
|
|
point
|
|
};
|
|
}
|
|
pathL(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, point } = PathElement.pathL(pathParser);
|
|
const { x, y } = point;
|
|
pathParser.addMarker(point, current);
|
|
boundingBox.addPoint(x, y);
|
|
if (ctx) {
|
|
ctx.lineTo(x, y);
|
|
}
|
|
}
|
|
static pathH(pathParser) {
|
|
const { current, command } = pathParser;
|
|
const point = new Point((command.relative ? current.x : 0) + command.x, current.y);
|
|
pathParser.current = point;
|
|
return {
|
|
current,
|
|
point
|
|
};
|
|
}
|
|
pathH(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, point } = PathElement.pathH(pathParser);
|
|
const { x, y } = point;
|
|
pathParser.addMarker(point, current);
|
|
boundingBox.addPoint(x, y);
|
|
if (ctx) {
|
|
ctx.lineTo(x, y);
|
|
}
|
|
}
|
|
static pathV(pathParser) {
|
|
const { current, command } = pathParser;
|
|
const point = new Point(current.x, (command.relative ? current.y : 0) + command.y);
|
|
pathParser.current = point;
|
|
return {
|
|
current,
|
|
point
|
|
};
|
|
}
|
|
pathV(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, point } = PathElement.pathV(pathParser);
|
|
const { x, y } = point;
|
|
pathParser.addMarker(point, current);
|
|
boundingBox.addPoint(x, y);
|
|
if (ctx) {
|
|
ctx.lineTo(x, y);
|
|
}
|
|
}
|
|
static pathC(pathParser) {
|
|
const { current } = pathParser;
|
|
const point = pathParser.getPoint('x1', 'y1');
|
|
const controlPoint = pathParser.getAsControlPoint('x2', 'y2');
|
|
const currentPoint = pathParser.getAsCurrentPoint();
|
|
return {
|
|
current,
|
|
point,
|
|
controlPoint,
|
|
currentPoint
|
|
};
|
|
}
|
|
pathC(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, point, controlPoint, currentPoint } = PathElement.pathC(pathParser);
|
|
pathParser.addMarker(currentPoint, controlPoint, point);
|
|
boundingBox.addBezierCurve(current.x, current.y, point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
if (ctx) {
|
|
ctx.bezierCurveTo(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
}
|
|
static pathS(pathParser) {
|
|
const { current } = pathParser;
|
|
const point = pathParser.getReflectedControlPoint();
|
|
const controlPoint = pathParser.getAsControlPoint('x2', 'y2');
|
|
const currentPoint = pathParser.getAsCurrentPoint();
|
|
return {
|
|
current,
|
|
point,
|
|
controlPoint,
|
|
currentPoint
|
|
};
|
|
}
|
|
pathS(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, point, controlPoint, currentPoint } = PathElement.pathS(pathParser);
|
|
pathParser.addMarker(currentPoint, controlPoint, point);
|
|
boundingBox.addBezierCurve(current.x, current.y, point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
if (ctx) {
|
|
ctx.bezierCurveTo(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
}
|
|
static pathQ(pathParser) {
|
|
const { current } = pathParser;
|
|
const controlPoint = pathParser.getAsControlPoint('x1', 'y1');
|
|
const currentPoint = pathParser.getAsCurrentPoint();
|
|
return {
|
|
current,
|
|
controlPoint,
|
|
currentPoint
|
|
};
|
|
}
|
|
pathQ(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, controlPoint, currentPoint } = PathElement.pathQ(pathParser);
|
|
pathParser.addMarker(currentPoint, controlPoint, controlPoint);
|
|
boundingBox.addQuadraticCurve(current.x, current.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
if (ctx) {
|
|
ctx.quadraticCurveTo(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
}
|
|
static pathT(pathParser) {
|
|
const { current } = pathParser;
|
|
const controlPoint = pathParser.getReflectedControlPoint();
|
|
pathParser.control = controlPoint;
|
|
const currentPoint = pathParser.getAsCurrentPoint();
|
|
return {
|
|
current,
|
|
controlPoint,
|
|
currentPoint
|
|
};
|
|
}
|
|
pathT(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { current, controlPoint, currentPoint } = PathElement.pathT(pathParser);
|
|
pathParser.addMarker(currentPoint, controlPoint, controlPoint);
|
|
boundingBox.addQuadraticCurve(current.x, current.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
if (ctx) {
|
|
ctx.quadraticCurveTo(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
}
|
|
static pathA(pathParser) {
|
|
const { current, command } = pathParser;
|
|
let { rX, rY, xRot, lArcFlag, sweepFlag } = command;
|
|
const xAxisRotation = xRot * (Math.PI / 180.0);
|
|
const currentPoint = pathParser.getAsCurrentPoint();
|
|
// Conversion from endpoint to center parameterization
|
|
// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
|
|
// x1', y1'
|
|
const currp = new Point(Math.cos(xAxisRotation) * (current.x - currentPoint.x) / 2.0
|
|
+ Math.sin(xAxisRotation) * (current.y - currentPoint.y) / 2.0, -Math.sin(xAxisRotation) * (current.x - currentPoint.x) / 2.0
|
|
+ Math.cos(xAxisRotation) * (current.y - currentPoint.y) / 2.0);
|
|
// adjust radii
|
|
const l = Math.pow(currp.x, 2) / Math.pow(rX, 2)
|
|
+ Math.pow(currp.y, 2) / Math.pow(rY, 2);
|
|
if (l > 1) {
|
|
rX *= Math.sqrt(l);
|
|
rY *= Math.sqrt(l);
|
|
}
|
|
// cx', cy'
|
|
let s = (lArcFlag === sweepFlag ? -1 : 1) * Math.sqrt(((Math.pow(rX, 2) * Math.pow(rY, 2))
|
|
- (Math.pow(rX, 2) * Math.pow(currp.y, 2))
|
|
- (Math.pow(rY, 2) * Math.pow(currp.x, 2))) / (Math.pow(rX, 2) * Math.pow(currp.y, 2)
|
|
+ Math.pow(rY, 2) * Math.pow(currp.x, 2)));
|
|
if (isNaN(s)) {
|
|
s = 0;
|
|
}
|
|
const cpp = new Point(s * rX * currp.y / rY, s * -rY * currp.x / rX);
|
|
// cx, cy
|
|
const centp = new Point((current.x + currentPoint.x) / 2.0
|
|
+ Math.cos(xAxisRotation) * cpp.x
|
|
- Math.sin(xAxisRotation) * cpp.y, (current.y + currentPoint.y) / 2.0
|
|
+ Math.sin(xAxisRotation) * cpp.x
|
|
+ Math.cos(xAxisRotation) * cpp.y);
|
|
// initial angle
|
|
const a1 = vectorsAngle([1, 0], [(currp.x - cpp.x) / rX, (currp.y - cpp.y) / rY]); // θ1
|
|
// 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 = vectorsAngle(u, v); // Δθ
|
|
if (vectorsRatio(u, v) <= -1) {
|
|
ad = Math.PI;
|
|
}
|
|
if (vectorsRatio(u, v) >= 1) {
|
|
ad = 0;
|
|
}
|
|
return {
|
|
currentPoint,
|
|
rX,
|
|
rY,
|
|
sweepFlag,
|
|
xAxisRotation,
|
|
centp,
|
|
a1,
|
|
ad
|
|
};
|
|
}
|
|
pathA(ctx, boundingBox) {
|
|
const { pathParser } = this;
|
|
const { currentPoint, rX, rY, sweepFlag, xAxisRotation, centp, a1, ad } = PathElement.pathA(pathParser);
|
|
// for markers
|
|
const dir = 1 - sweepFlag ? 1.0 : -1.0;
|
|
const ah = a1 + dir * (ad / 2.0);
|
|
const halfWay = new Point(centp.x + rX * Math.cos(ah), centp.y + rY * Math.sin(ah));
|
|
pathParser.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
|
|
pathParser.addMarkerAngle(currentPoint, ah - dir * Math.PI);
|
|
boundingBox.addPoint(currentPoint.x, currentPoint.y); // TODO: this is too naive, make it better
|
|
if (ctx && !isNaN(a1) && !isNaN(ad)) {
|
|
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, Boolean(1 - sweepFlag));
|
|
ctx.scale(1 / sx, 1 / sy);
|
|
ctx.rotate(-xAxisRotation);
|
|
ctx.translate(-centp.x, -centp.y);
|
|
}
|
|
}
|
|
static pathZ(pathParser) {
|
|
pathParser.current = pathParser.start;
|
|
}
|
|
pathZ(ctx, boundingBox) {
|
|
PathElement.pathZ(this.pathParser);
|
|
if (ctx) {
|
|
// only close path if it is not a straight line
|
|
if (boundingBox.x1 !== boundingBox.x2
|
|
&& boundingBox.y1 !== boundingBox.y2) {
|
|
ctx.closePath();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class GlyphElement extends PathElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'glyph';
|
|
this.horizAdvX = this.getAttribute('horiz-adv-x').getNumber();
|
|
this.unicode = this.getAttribute('unicode').getString();
|
|
this.arabicForm = this.getAttribute('arabic-form').getString();
|
|
}
|
|
}
|
|
|
|
class TextElement extends RenderedElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, new.target === TextElement
|
|
? true
|
|
: captureTextNodes);
|
|
this.type = 'text';
|
|
this.x = 0;
|
|
this.y = 0;
|
|
this.measureCache = -1;
|
|
}
|
|
setContext(ctx, fromMeasure = false) {
|
|
super.setContext(ctx, fromMeasure);
|
|
const textBaseline = this.getStyle('dominant-baseline').getTextBaseline()
|
|
|| this.getStyle('alignment-baseline').getTextBaseline();
|
|
if (textBaseline) {
|
|
ctx.textBaseline = textBaseline;
|
|
}
|
|
}
|
|
initializeCoordinates() {
|
|
this.x = 0;
|
|
this.y = 0;
|
|
this.leafTexts = [];
|
|
this.textChunkStart = 0;
|
|
this.minX = Number.POSITIVE_INFINITY;
|
|
this.maxX = Number.NEGATIVE_INFINITY;
|
|
}
|
|
getBoundingBox(ctx) {
|
|
if (this.type !== 'text') {
|
|
return this.getTElementBoundingBox(ctx);
|
|
}
|
|
// first, calculate child positions
|
|
this.initializeCoordinates();
|
|
this.adjustChildCoordinatesRecursive(ctx);
|
|
let boundingBox = null;
|
|
// then calculate bounding box
|
|
this.children.forEach((_, i) => {
|
|
const childBoundingBox = this.getChildBoundingBox(ctx, this, this, i);
|
|
if (!boundingBox) {
|
|
boundingBox = childBoundingBox;
|
|
}
|
|
else {
|
|
boundingBox.addBoundingBox(childBoundingBox);
|
|
}
|
|
});
|
|
return boundingBox;
|
|
}
|
|
getFontSize() {
|
|
const { document, parent } = this;
|
|
const inheritFontSize = Font.parse(document.ctx.font).fontSize;
|
|
const fontSize = parent.getStyle('font-size').getNumber(inheritFontSize);
|
|
return fontSize;
|
|
}
|
|
getTElementBoundingBox(ctx) {
|
|
const fontSize = this.getFontSize();
|
|
return new BoundingBox(this.x, this.y - fontSize, this.x + this.measureText(ctx), this.y);
|
|
}
|
|
getGlyph(font, text, i) {
|
|
const char = text[i];
|
|
let glyph = null;
|
|
if (font.isArabic) {
|
|
const len = text.length;
|
|
const prevChar = text[i - 1];
|
|
const nextChar = text[i + 1];
|
|
let arabicForm = 'isolated';
|
|
if ((i === 0 || prevChar === ' ') && i < len - 1 && nextChar !== ' ') {
|
|
arabicForm = 'terminal';
|
|
}
|
|
if (i > 0 && prevChar !== ' ' && i < len - 1 && nextChar !== ' ') {
|
|
arabicForm = 'medial';
|
|
}
|
|
if (i > 0 && prevChar !== ' ' && (i === len - 1 || nextChar === ' ')) {
|
|
arabicForm = 'initial';
|
|
}
|
|
if (typeof font.glyphs[char] !== 'undefined') {
|
|
// NEED TEST
|
|
const maybeGlyph = font.glyphs[char];
|
|
glyph = maybeGlyph instanceof GlyphElement
|
|
? maybeGlyph
|
|
: maybeGlyph[arabicForm];
|
|
}
|
|
}
|
|
else {
|
|
glyph = font.glyphs[char];
|
|
}
|
|
if (!glyph) {
|
|
glyph = font.missingGlyph;
|
|
}
|
|
return glyph;
|
|
}
|
|
getText() {
|
|
return '';
|
|
}
|
|
getTextFromNode(node) {
|
|
const textNode = node || this.node;
|
|
const childNodes = Array.from(textNode.parentNode.childNodes);
|
|
const index = childNodes.indexOf(textNode);
|
|
const lastIndex = childNodes.length - 1;
|
|
let text = compressSpaces(
|
|
// textNode.value
|
|
// || textNode.text
|
|
textNode.textContent
|
|
|| '');
|
|
if (index === 0) {
|
|
text = trimLeft(text);
|
|
}
|
|
if (index === lastIndex) {
|
|
text = trimRight(text);
|
|
}
|
|
return text;
|
|
}
|
|
renderChildren(ctx) {
|
|
if (this.type !== 'text') {
|
|
this.renderTElementChildren(ctx);
|
|
return;
|
|
}
|
|
// first, calculate child positions
|
|
this.initializeCoordinates();
|
|
this.adjustChildCoordinatesRecursive(ctx);
|
|
// then render
|
|
this.children.forEach((_, i) => {
|
|
this.renderChild(ctx, this, this, i);
|
|
});
|
|
const { mouse } = this.document.screen;
|
|
// Do not calc bounding box if mouse is not working.
|
|
if (mouse.isWorking()) {
|
|
mouse.checkBoundingBox(this, this.getBoundingBox(ctx));
|
|
}
|
|
}
|
|
renderTElementChildren(ctx) {
|
|
const { document, parent } = this;
|
|
const renderText = this.getText();
|
|
const customFont = parent.getStyle('font-family').getDefinition();
|
|
if (customFont) {
|
|
const { unitsPerEm } = customFont.fontFace;
|
|
const ctxFont = Font.parse(document.ctx.font);
|
|
const fontSize = parent.getStyle('font-size').getNumber(ctxFont.fontSize);
|
|
const fontStyle = parent.getStyle('font-style').getString(ctxFont.fontStyle);
|
|
const scale = fontSize / unitsPerEm;
|
|
const text = customFont.isRTL
|
|
? renderText.split('').reverse().join('')
|
|
: renderText;
|
|
const dx = toNumbers(parent.getAttribute('dx').getString());
|
|
const len = text.length;
|
|
for (let i = 0; i < len; i++) {
|
|
const glyph = this.getGlyph(customFont, text, i);
|
|
ctx.translate(this.x, this.y);
|
|
ctx.scale(scale, -scale);
|
|
const lw = ctx.lineWidth;
|
|
ctx.lineWidth = ctx.lineWidth * unitsPerEm / fontSize;
|
|
if (fontStyle === 'italic') {
|
|
ctx.transform(1, 0, .4, 1, 0, 0);
|
|
}
|
|
glyph.render(ctx);
|
|
if (fontStyle === 'italic') {
|
|
ctx.transform(1, 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) / unitsPerEm;
|
|
if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
|
|
this.x += dx[i];
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
const { x, y } = this;
|
|
// NEED TEST
|
|
// if (ctx.paintOrder === 'stroke') {
|
|
// if (ctx.strokeStyle) {
|
|
// ctx.strokeText(renderText, x, y);
|
|
// }
|
|
// if (ctx.fillStyle) {
|
|
// ctx.fillText(renderText, x, y);
|
|
// }
|
|
// } else {
|
|
if (ctx.fillStyle) {
|
|
ctx.fillText(renderText, x, y);
|
|
}
|
|
if (ctx.strokeStyle) {
|
|
ctx.strokeText(renderText, x, y);
|
|
}
|
|
// }
|
|
}
|
|
applyAnchoring() {
|
|
if (this.textChunkStart >= this.leafTexts.length) {
|
|
return;
|
|
}
|
|
// This is basically the "Apply anchoring" part of https://www.w3.org/TR/SVG2/text.html#TextLayoutAlgorithm.
|
|
// The difference is that we apply the anchoring as soon as a chunk is finished. This saves some extra looping.
|
|
// Vertical text is not supported.
|
|
const firstElement = this.leafTexts[this.textChunkStart];
|
|
const textAnchor = firstElement.getStyle('text-anchor').getString('start');
|
|
const isRTL = false; // we treat RTL like LTR
|
|
let shift = 0;
|
|
if (textAnchor === 'start' && !isRTL || textAnchor === 'end' && isRTL) {
|
|
shift = firstElement.x - this.minX;
|
|
}
|
|
else if (textAnchor === 'end' && !isRTL || textAnchor === 'start' && isRTL) {
|
|
shift = firstElement.x - this.maxX;
|
|
}
|
|
else {
|
|
shift = firstElement.x - (this.minX + this.maxX) / 2;
|
|
}
|
|
for (let i = this.textChunkStart; i < this.leafTexts.length; i++) {
|
|
this.leafTexts[i].x += shift;
|
|
}
|
|
// start new chunk
|
|
this.minX = Number.POSITIVE_INFINITY;
|
|
this.maxX = Number.NEGATIVE_INFINITY;
|
|
this.textChunkStart = this.leafTexts.length;
|
|
}
|
|
adjustChildCoordinatesRecursive(ctx) {
|
|
this.children.forEach((_, i) => {
|
|
this.adjustChildCoordinatesRecursiveCore(ctx, this, this, i);
|
|
});
|
|
this.applyAnchoring();
|
|
}
|
|
adjustChildCoordinatesRecursiveCore(ctx, textParent, parent, i) {
|
|
const child = parent.children[i];
|
|
if (child.children.length > 0) {
|
|
child.children.forEach((_, i) => {
|
|
textParent.adjustChildCoordinatesRecursiveCore(ctx, textParent, child, i);
|
|
});
|
|
}
|
|
else {
|
|
// only leafs are relevant
|
|
this.adjustChildCoordinates(ctx, textParent, parent, i);
|
|
}
|
|
}
|
|
adjustChildCoordinates(ctx, textParent, parent, i) {
|
|
const child = parent.children[i];
|
|
if (typeof child.measureText !== 'function') {
|
|
return child;
|
|
}
|
|
ctx.save();
|
|
child.setContext(ctx, true);
|
|
const xAttr = child.getAttribute('x');
|
|
const yAttr = child.getAttribute('y');
|
|
const dxAttr = child.getAttribute('dx');
|
|
const dyAttr = child.getAttribute('dy');
|
|
const customFont = child.getStyle('font-family').getDefinition();
|
|
const isRTL = Boolean(customFont) && customFont.isRTL;
|
|
if (i === 0) {
|
|
// First children inherit attributes from parent(s). Positional attributes
|
|
// are only inherited from a parent to it's first child.
|
|
if (!xAttr.hasValue()) {
|
|
xAttr.setValue(child.getInheritedAttribute('x'));
|
|
}
|
|
if (!yAttr.hasValue()) {
|
|
yAttr.setValue(child.getInheritedAttribute('y'));
|
|
}
|
|
if (!dxAttr.hasValue()) {
|
|
dxAttr.setValue(child.getInheritedAttribute('dx'));
|
|
}
|
|
if (!dyAttr.hasValue()) {
|
|
dyAttr.setValue(child.getInheritedAttribute('dy'));
|
|
}
|
|
}
|
|
const width = child.measureText(ctx);
|
|
if (isRTL) {
|
|
textParent.x -= width;
|
|
}
|
|
if (xAttr.hasValue()) {
|
|
// an "x" attribute marks the start of a new chunk
|
|
textParent.applyAnchoring();
|
|
child.x = xAttr.getPixels('x');
|
|
if (dxAttr.hasValue()) {
|
|
child.x += dxAttr.getPixels('x');
|
|
}
|
|
}
|
|
else {
|
|
if (dxAttr.hasValue()) {
|
|
textParent.x += dxAttr.getPixels('x');
|
|
}
|
|
child.x = textParent.x;
|
|
}
|
|
textParent.x = child.x;
|
|
if (!isRTL) {
|
|
textParent.x += width;
|
|
}
|
|
if (yAttr.hasValue()) {
|
|
child.y = yAttr.getPixels('y');
|
|
if (dyAttr.hasValue()) {
|
|
child.y += dyAttr.getPixels('y');
|
|
}
|
|
}
|
|
else {
|
|
if (dyAttr.hasValue()) {
|
|
textParent.y += dyAttr.getPixels('y');
|
|
}
|
|
child.y = textParent.y;
|
|
}
|
|
textParent.y = child.y;
|
|
// update the current chunk and it's bounds
|
|
textParent.leafTexts.push(child);
|
|
textParent.minX = Math.min(textParent.minX, child.x, child.x + width);
|
|
textParent.maxX = Math.max(textParent.maxX, child.x, child.x + width);
|
|
child.clearContext(ctx);
|
|
ctx.restore();
|
|
return child;
|
|
}
|
|
getChildBoundingBox(ctx, textParent, parent, i) {
|
|
const child = parent.children[i];
|
|
// not a text node?
|
|
if (typeof child.getBoundingBox !== 'function') {
|
|
return null;
|
|
}
|
|
const boundingBox = child.getBoundingBox(ctx);
|
|
if (!boundingBox) {
|
|
return null;
|
|
}
|
|
child.children.forEach((_, i) => {
|
|
const childBoundingBox = textParent.getChildBoundingBox(ctx, textParent, child, i);
|
|
boundingBox.addBoundingBox(childBoundingBox);
|
|
});
|
|
return boundingBox;
|
|
}
|
|
renderChild(ctx, textParent, parent, i) {
|
|
const child = parent.children[i];
|
|
child.render(ctx);
|
|
child.children.forEach((_, i) => {
|
|
textParent.renderChild(ctx, textParent, child, i);
|
|
});
|
|
}
|
|
measureText(ctx) {
|
|
const { measureCache } = this;
|
|
if (~measureCache) {
|
|
return measureCache;
|
|
}
|
|
const renderText = this.getText();
|
|
const measure = this.measureTargetText(ctx, renderText);
|
|
this.measureCache = measure;
|
|
return measure;
|
|
}
|
|
measureTargetText(ctx, targetText) {
|
|
if (!targetText.length) {
|
|
return 0;
|
|
}
|
|
const { parent } = this;
|
|
const customFont = parent.getStyle('font-family').getDefinition();
|
|
if (customFont) {
|
|
const fontSize = this.getFontSize();
|
|
const text = customFont.isRTL
|
|
? targetText.split('').reverse().join('')
|
|
: targetText;
|
|
const dx = toNumbers(parent.getAttribute('dx').getString());
|
|
const len = text.length;
|
|
let measure = 0;
|
|
for (let i = 0; i < len; 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;
|
|
}
|
|
if (!ctx.measureText) {
|
|
return targetText.length * 10;
|
|
}
|
|
ctx.save();
|
|
this.setContext(ctx, true);
|
|
const { width: measure } = ctx.measureText(targetText);
|
|
this.clearContext(ctx);
|
|
ctx.restore();
|
|
return measure;
|
|
}
|
|
/**
|
|
* Inherits positional attributes from {@link TextElement} parent(s). Attributes
|
|
* are only inherited from a parent to its first child.
|
|
* @param name - The attribute name.
|
|
* @returns The attribute value or null.
|
|
*/
|
|
getInheritedAttribute(name) {
|
|
// eslint-disable-next-line @typescript-eslint/no-this-alias,consistent-this
|
|
let current = this;
|
|
while (current instanceof TextElement && current.isFirstChild()) {
|
|
const parentAttr = current.parent.getAttribute(name);
|
|
if (parentAttr.hasValue(true)) {
|
|
return parentAttr.getValue('0');
|
|
}
|
|
current = current.parent;
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
|
|
class TSpanElement extends TextElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, new.target === TSpanElement
|
|
? true
|
|
: captureTextNodes);
|
|
this.type = 'tspan';
|
|
// if this node has children, then they own the text
|
|
this.text = this.children.length > 0
|
|
? ''
|
|
: this.getTextFromNode();
|
|
}
|
|
getText() {
|
|
return this.text;
|
|
}
|
|
}
|
|
|
|
class TextNode extends TSpanElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'textNode';
|
|
}
|
|
}
|
|
|
|
class SVGElement extends RenderedElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'svg';
|
|
this.root = false;
|
|
}
|
|
setContext(ctx) {
|
|
const { document } = this;
|
|
const { screen, window } = document;
|
|
const canvas = ctx.canvas;
|
|
screen.setDefaults(ctx);
|
|
if (canvas.style
|
|
&& typeof ctx.font !== 'undefined'
|
|
&& window
|
|
&& typeof window.getComputedStyle !== 'undefined') {
|
|
ctx.font = window.getComputedStyle(canvas).getPropertyValue('font');
|
|
const fontSizeProp = new Property(document, 'fontSize', Font.parse(ctx.font).fontSize);
|
|
if (fontSizeProp.hasValue()) {
|
|
document.rootEmSize = fontSizeProp.getPixels('y');
|
|
document.emSize = document.rootEmSize;
|
|
}
|
|
}
|
|
// create new view port
|
|
if (!this.getAttribute('x').hasValue()) {
|
|
this.getAttribute('x', true).setValue(0);
|
|
}
|
|
if (!this.getAttribute('y').hasValue()) {
|
|
this.getAttribute('y', true).setValue(0);
|
|
}
|
|
let { width, height } = screen.viewPort;
|
|
if (!this.getStyle('width').hasValue()) {
|
|
this.getStyle('width', true).setValue('100%');
|
|
}
|
|
if (!this.getStyle('height').hasValue()) {
|
|
this.getStyle('height', true).setValue('100%');
|
|
}
|
|
if (!this.getStyle('color').hasValue()) {
|
|
this.getStyle('color', true).setValue('black');
|
|
}
|
|
const refXAttr = this.getAttribute('refX');
|
|
const refYAttr = this.getAttribute('refY');
|
|
const viewBoxAttr = this.getAttribute('viewBox');
|
|
const viewBox = viewBoxAttr.hasValue()
|
|
? toNumbers(viewBoxAttr.getString())
|
|
: null;
|
|
const clip = !this.root
|
|
&& this.getStyle('overflow').getValue('hidden') !== 'visible';
|
|
let minX = 0;
|
|
let minY = 0;
|
|
let clipX = 0;
|
|
let clipY = 0;
|
|
if (viewBox) {
|
|
minX = viewBox[0];
|
|
minY = viewBox[1];
|
|
}
|
|
if (!this.root) {
|
|
width = this.getStyle('width').getPixels('x');
|
|
height = this.getStyle('height').getPixels('y');
|
|
if (this.type === 'marker') {
|
|
clipX = minX;
|
|
clipY = minY;
|
|
minX = 0;
|
|
minY = 0;
|
|
}
|
|
}
|
|
screen.viewPort.setCurrent(width, height);
|
|
// Default value of transform-origin is center only for root SVG elements
|
|
// https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform-origin
|
|
if (this.node // is not temporary SVGElement
|
|
&& (!this.parent || this.node.parentNode?.nodeName === 'foreignObject')
|
|
&& this.getStyle('transform', false, true).hasValue()
|
|
&& !this.getStyle('transform-origin', false, true).hasValue()) {
|
|
this.getStyle('transform-origin', true, true).setValue('50% 50%');
|
|
}
|
|
super.setContext(ctx);
|
|
ctx.translate(this.getAttribute('x').getPixels('x'), this.getAttribute('y').getPixels('y'));
|
|
if (viewBox) {
|
|
width = viewBox[2];
|
|
height = viewBox[3];
|
|
}
|
|
document.setViewBox({
|
|
ctx,
|
|
aspectRatio: this.getAttribute('preserveAspectRatio').getString(),
|
|
width: screen.viewPort.width,
|
|
desiredWidth: width,
|
|
height: screen.viewPort.height,
|
|
desiredHeight: height,
|
|
minX,
|
|
minY,
|
|
refX: refXAttr.getValue(),
|
|
refY: refYAttr.getValue(),
|
|
clip,
|
|
clipX,
|
|
clipY
|
|
});
|
|
if (viewBox) {
|
|
screen.viewPort.removeCurrent();
|
|
screen.viewPort.setCurrent(width, height);
|
|
}
|
|
}
|
|
clearContext(ctx) {
|
|
super.clearContext(ctx);
|
|
this.document.screen.viewPort.removeCurrent();
|
|
}
|
|
/**
|
|
* Resize SVG to fit in given size.
|
|
* @param width
|
|
* @param height
|
|
* @param preserveAspectRatio
|
|
*/
|
|
resize(width, height = width, preserveAspectRatio = false) {
|
|
const widthAttr = this.getAttribute('width', true);
|
|
const heightAttr = this.getAttribute('height', true);
|
|
const viewBoxAttr = this.getAttribute('viewBox');
|
|
const styleAttr = this.getAttribute('style');
|
|
const originWidth = widthAttr.getNumber(0);
|
|
const originHeight = heightAttr.getNumber(0);
|
|
if (preserveAspectRatio) {
|
|
if (typeof preserveAspectRatio === 'string') {
|
|
this.getAttribute('preserveAspectRatio', true).setValue(preserveAspectRatio);
|
|
}
|
|
else {
|
|
const preserveAspectRatioAttr = this.getAttribute('preserveAspectRatio');
|
|
if (preserveAspectRatioAttr.hasValue()) {
|
|
preserveAspectRatioAttr.setValue(preserveAspectRatioAttr.getString().replace(/^\s*(\S.*\S)\s*$/, '$1'));
|
|
}
|
|
}
|
|
}
|
|
widthAttr.setValue(width);
|
|
heightAttr.setValue(height);
|
|
if (!viewBoxAttr.hasValue()) {
|
|
viewBoxAttr.setValue(`0 0 ${originWidth || width} ${originHeight || height}`);
|
|
}
|
|
if (styleAttr.hasValue()) {
|
|
const widthStyle = this.getStyle('width');
|
|
const heightStyle = this.getStyle('height');
|
|
if (widthStyle.hasValue()) {
|
|
widthStyle.setValue(`${width}px`);
|
|
}
|
|
if (heightStyle.hasValue()) {
|
|
heightStyle.setValue(`${height}px`);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
class RectElement extends PathElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'rect';
|
|
}
|
|
path(ctx) {
|
|
const x = this.getAttribute('x').getPixels('x');
|
|
const y = this.getAttribute('y').getPixels('y');
|
|
const width = this.getStyle('width', false, true).getPixels('x');
|
|
const height = this.getStyle('height', false, true).getPixels('y');
|
|
const rxAttr = this.getAttribute('rx');
|
|
const ryAttr = this.getAttribute('ry');
|
|
let rx = rxAttr.getPixels('x');
|
|
let ry = ryAttr.getPixels('y');
|
|
if (rxAttr.hasValue() && !ryAttr.hasValue()) {
|
|
ry = rx;
|
|
}
|
|
if (ryAttr.hasValue() && !rxAttr.hasValue()) {
|
|
rx = ry;
|
|
}
|
|
rx = Math.min(rx, width / 2.0);
|
|
ry = Math.min(ry, height / 2.0);
|
|
if (ctx) {
|
|
const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
|
|
ctx.beginPath(); // always start the path so we don't fill prior paths
|
|
if (height > 0 && width > 0) {
|
|
ctx.moveTo(x + rx, y);
|
|
ctx.lineTo(x + width - rx, y);
|
|
ctx.bezierCurveTo(x + width - rx + (KAPPA * rx), y, x + width, y + ry - (KAPPA * ry), x + width, y + ry);
|
|
ctx.lineTo(x + width, y + height - ry);
|
|
ctx.bezierCurveTo(x + width, y + height - ry + (KAPPA * ry), x + width - rx + (KAPPA * rx), y + height, x + width - rx, y + height);
|
|
ctx.lineTo(x + rx, y + height);
|
|
ctx.bezierCurveTo(x + rx - (KAPPA * rx), y + height, x, y + height - ry + (KAPPA * ry), x, y + height - ry);
|
|
ctx.lineTo(x, y + ry);
|
|
ctx.bezierCurveTo(x, y + ry - (KAPPA * ry), x + rx - (KAPPA * rx), y, x + rx, y);
|
|
ctx.closePath();
|
|
}
|
|
}
|
|
return new BoundingBox(x, y, x + width, y + height);
|
|
}
|
|
getMarkers() {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
class CircleElement extends PathElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'circle';
|
|
}
|
|
path(ctx) {
|
|
const cx = this.getAttribute('cx').getPixels('x');
|
|
const cy = this.getAttribute('cy').getPixels('y');
|
|
const r = this.getAttribute('r').getPixels();
|
|
if (ctx && r > 0) {
|
|
ctx.beginPath();
|
|
ctx.arc(cx, cy, r, 0, Math.PI * 2, false);
|
|
ctx.closePath();
|
|
}
|
|
return new BoundingBox(cx - r, cy - r, cx + r, cy + r);
|
|
}
|
|
getMarkers() {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
class EllipseElement extends PathElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'ellipse';
|
|
}
|
|
path(ctx) {
|
|
const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
|
|
const rx = this.getAttribute('rx').getPixels('x');
|
|
const ry = this.getAttribute('ry').getPixels('y');
|
|
const cx = this.getAttribute('cx').getPixels('x');
|
|
const cy = this.getAttribute('cy').getPixels('y');
|
|
if (ctx && rx > 0 && ry > 0) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(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.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
|
|
ctx.closePath();
|
|
}
|
|
return new BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
|
|
}
|
|
getMarkers() {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
class LineElement extends PathElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'line';
|
|
}
|
|
getPoints() {
|
|
return [
|
|
new Point(this.getAttribute('x1').getPixels('x'), this.getAttribute('y1').getPixels('y')),
|
|
new Point(this.getAttribute('x2').getPixels('x'), this.getAttribute('y2').getPixels('y'))
|
|
];
|
|
}
|
|
path(ctx) {
|
|
const [{ x: x0, y: y0 }, { x: x1, y: y1 }] = this.getPoints();
|
|
if (ctx) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(x0, y0);
|
|
ctx.lineTo(x1, y1);
|
|
}
|
|
return new BoundingBox(x0, y0, x1, y1);
|
|
}
|
|
getMarkers() {
|
|
const [p0, p1] = this.getPoints();
|
|
const a = p0.angleTo(p1);
|
|
return [
|
|
[p0, a],
|
|
[p1, a]
|
|
];
|
|
}
|
|
}
|
|
|
|
class PolylineElement extends PathElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'polyline';
|
|
this.points = [];
|
|
this.points = Point.parsePath(this.getAttribute('points').getString());
|
|
}
|
|
path(ctx) {
|
|
const { points } = this;
|
|
const [{ x: x0, y: y0 }] = points;
|
|
const boundingBox = new BoundingBox(x0, y0);
|
|
if (ctx) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(x0, y0);
|
|
}
|
|
points.forEach(({ x, y }) => {
|
|
boundingBox.addPoint(x, y);
|
|
if (ctx) {
|
|
ctx.lineTo(x, y);
|
|
}
|
|
});
|
|
return boundingBox;
|
|
}
|
|
getMarkers() {
|
|
const { points } = this;
|
|
const lastIndex = points.length - 1;
|
|
const markers = [];
|
|
points.forEach((point, i) => {
|
|
if (i === lastIndex) {
|
|
return;
|
|
}
|
|
markers.push([
|
|
point,
|
|
point.angleTo(points[i + 1])
|
|
]);
|
|
});
|
|
if (markers.length > 0) {
|
|
markers.push([
|
|
points[points.length - 1],
|
|
markers[markers.length - 1][1]
|
|
]);
|
|
}
|
|
return markers;
|
|
}
|
|
}
|
|
|
|
class PolygonElement extends PolylineElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'polygon';
|
|
}
|
|
path(ctx) {
|
|
const boundingBox = super.path(ctx);
|
|
const [{ x, y }] = this.points;
|
|
if (ctx) {
|
|
ctx.lineTo(x, y);
|
|
ctx.closePath();
|
|
}
|
|
return boundingBox;
|
|
}
|
|
}
|
|
|
|
class PatternElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'pattern';
|
|
}
|
|
createPattern(ctx, _, parentOpacityProp) {
|
|
const width = this.getStyle('width').getPixels('x', true);
|
|
const height = this.getStyle('height').getPixels('y', true);
|
|
// render me using a temporary svg element
|
|
const patternSvg = new SVGElement(this.document, null);
|
|
patternSvg.attributes.viewBox = new Property(this.document, 'viewBox', this.getAttribute('viewBox').getValue());
|
|
patternSvg.attributes.width = new Property(this.document, 'width', `${width}px`);
|
|
patternSvg.attributes.height = new Property(this.document, 'height', `${height}px`);
|
|
patternSvg.attributes.transform = new Property(this.document, 'transform', this.getAttribute('patternTransform').getValue());
|
|
patternSvg.children = this.children;
|
|
const patternCanvas = this.document.createCanvas(width, height);
|
|
const patternCtx = patternCanvas.getContext('2d');
|
|
const xAttr = this.getAttribute('x');
|
|
const yAttr = this.getAttribute('y');
|
|
if (xAttr.hasValue() && yAttr.hasValue()) {
|
|
patternCtx.translate(xAttr.getPixels('x', true), yAttr.getPixels('y', true));
|
|
}
|
|
if (parentOpacityProp.hasValue()) {
|
|
this.styles['fill-opacity'] = parentOpacityProp;
|
|
}
|
|
else {
|
|
Reflect.deleteProperty(this.styles, 'fill-opacity');
|
|
}
|
|
// 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++) {
|
|
patternCtx.save();
|
|
patternSvg.attributes.x = new Property(this.document, 'x', x * patternCanvas.width);
|
|
patternSvg.attributes.y = new Property(this.document, 'y', y * patternCanvas.height);
|
|
patternSvg.render(patternCtx);
|
|
patternCtx.restore();
|
|
}
|
|
}
|
|
const pattern = ctx.createPattern(patternCanvas, 'repeat');
|
|
return pattern;
|
|
}
|
|
}
|
|
|
|
class MarkerElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'marker';
|
|
}
|
|
render(ctx, point, angle) {
|
|
if (!point) {
|
|
return;
|
|
}
|
|
const { x, y } = point;
|
|
const orient = this.getAttribute('orient').getString('auto');
|
|
const markerUnits = this.getAttribute('markerUnits').getString('strokeWidth');
|
|
ctx.translate(x, y);
|
|
if (orient === 'auto') {
|
|
ctx.rotate(angle);
|
|
}
|
|
if (markerUnits === 'strokeWidth') {
|
|
ctx.scale(ctx.lineWidth, ctx.lineWidth);
|
|
}
|
|
ctx.save();
|
|
// render me using a temporary svg element
|
|
const markerSvg = new SVGElement(this.document, null);
|
|
markerSvg.type = this.type;
|
|
markerSvg.attributes.viewBox = new Property(this.document, 'viewBox', this.getAttribute('viewBox').getValue());
|
|
markerSvg.attributes.refX = new Property(this.document, 'refX', this.getAttribute('refX').getValue());
|
|
markerSvg.attributes.refY = new Property(this.document, 'refY', this.getAttribute('refY').getValue());
|
|
markerSvg.attributes.width = new Property(this.document, 'width', this.getAttribute('markerWidth').getValue());
|
|
markerSvg.attributes.height = new Property(this.document, 'height', this.getAttribute('markerHeight').getValue());
|
|
markerSvg.attributes.overflow = new Property(this.document, 'overflow', this.getAttribute('overflow').getValue());
|
|
markerSvg.attributes.fill = new Property(this.document, 'fill', this.getAttribute('fill').getColor('black'));
|
|
markerSvg.attributes.stroke = new Property(this.document, 'stroke', this.getAttribute('stroke').getValue('none'));
|
|
markerSvg.children = this.children;
|
|
markerSvg.render(ctx);
|
|
ctx.restore();
|
|
if (markerUnits === 'strokeWidth') {
|
|
ctx.scale(1 / ctx.lineWidth, 1 / ctx.lineWidth);
|
|
}
|
|
if (orient === 'auto') {
|
|
ctx.rotate(-angle);
|
|
}
|
|
ctx.translate(-x, -y);
|
|
}
|
|
}
|
|
|
|
class DefsElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'defs';
|
|
}
|
|
render() {
|
|
// NOOP
|
|
}
|
|
}
|
|
|
|
class GElement extends RenderedElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'g';
|
|
}
|
|
getBoundingBox(ctx) {
|
|
const boundingBox = new BoundingBox();
|
|
this.children.forEach((child) => {
|
|
boundingBox.addBoundingBox(child.getBoundingBox(ctx));
|
|
});
|
|
return boundingBox;
|
|
}
|
|
}
|
|
|
|
class GradientElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.attributesToInherit = [
|
|
'gradientUnits'
|
|
];
|
|
this.stops = [];
|
|
const { stops, children } = this;
|
|
children.forEach((child) => {
|
|
if (child.type === 'stop') {
|
|
stops.push(child);
|
|
}
|
|
});
|
|
}
|
|
getGradientUnits() {
|
|
return this.getAttribute('gradientUnits').getString('objectBoundingBox');
|
|
}
|
|
createGradient(ctx, element, parentOpacityProp) {
|
|
// eslint-disable-next-line @typescript-eslint/no-this-alias, consistent-this
|
|
let stopsContainer = this;
|
|
if (this.getHrefAttribute().hasValue()) {
|
|
stopsContainer = this.getHrefAttribute().getDefinition();
|
|
this.inheritStopContainer(stopsContainer);
|
|
}
|
|
const { stops } = stopsContainer;
|
|
const gradient = this.getGradient(ctx, element);
|
|
if (!gradient) {
|
|
return this.addParentOpacity(parentOpacityProp, stops[stops.length - 1].color);
|
|
}
|
|
stops.forEach((stop) => {
|
|
gradient.addColorStop(stop.offset, this.addParentOpacity(parentOpacityProp, stop.color));
|
|
});
|
|
if (this.getAttribute('gradientTransform').hasValue()) {
|
|
// render as transformed pattern on temporary canvas
|
|
const { document } = this;
|
|
const { MAX_VIRTUAL_PIXELS, viewPort } = document.screen;
|
|
const [rootView] = viewPort.viewPorts;
|
|
const rect = new RectElement(document, null);
|
|
rect.attributes.x = new Property(document, 'x', -MAX_VIRTUAL_PIXELS / 3.0);
|
|
rect.attributes.y = new Property(document, 'y', -MAX_VIRTUAL_PIXELS / 3.0);
|
|
rect.attributes.width = new Property(document, 'width', MAX_VIRTUAL_PIXELS);
|
|
rect.attributes.height = new Property(document, 'height', MAX_VIRTUAL_PIXELS);
|
|
const group = new GElement(document, null);
|
|
group.attributes.transform = new Property(document, 'transform', this.getAttribute('gradientTransform').getValue());
|
|
group.children = [rect];
|
|
const patternSvg = new SVGElement(document, null);
|
|
patternSvg.attributes.x = new Property(document, 'x', 0);
|
|
patternSvg.attributes.y = new Property(document, 'y', 0);
|
|
patternSvg.attributes.width = new Property(document, 'width', rootView.width);
|
|
patternSvg.attributes.height = new Property(document, 'height', rootView.height);
|
|
patternSvg.children = [group];
|
|
const patternCanvas = document.createCanvas(rootView.width, rootView.height);
|
|
const patternCtx = patternCanvas.getContext('2d');
|
|
patternCtx.fillStyle = gradient;
|
|
patternSvg.render(patternCtx);
|
|
return patternCtx.createPattern(patternCanvas, 'no-repeat');
|
|
}
|
|
return gradient;
|
|
}
|
|
inheritStopContainer(stopsContainer) {
|
|
this.attributesToInherit.forEach((attributeToInherit) => {
|
|
if (!this.getAttribute(attributeToInherit).hasValue()
|
|
&& stopsContainer.getAttribute(attributeToInherit).hasValue()) {
|
|
this.getAttribute(attributeToInherit, true)
|
|
.setValue(stopsContainer.getAttribute(attributeToInherit).getValue());
|
|
}
|
|
});
|
|
}
|
|
addParentOpacity(parentOpacityProp, color) {
|
|
if (parentOpacityProp.hasValue()) {
|
|
const colorProp = new Property(this.document, 'color', color);
|
|
return colorProp.addOpacity(parentOpacityProp).getColor();
|
|
}
|
|
return color;
|
|
}
|
|
}
|
|
|
|
class LinearGradientElement extends GradientElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'linearGradient';
|
|
this.attributesToInherit.push('x1', 'y1', 'x2', 'y2');
|
|
}
|
|
getGradient(ctx, element) {
|
|
const isBoundingBoxUnits = this.getGradientUnits() === 'objectBoundingBox';
|
|
const boundingBox = isBoundingBoxUnits
|
|
? element.getBoundingBox(ctx)
|
|
: null;
|
|
if (isBoundingBoxUnits && !boundingBox) {
|
|
return null;
|
|
}
|
|
if (!this.getAttribute('x1').hasValue()
|
|
&& !this.getAttribute('y1').hasValue()
|
|
&& !this.getAttribute('x2').hasValue()
|
|
&& !this.getAttribute('y2').hasValue()) {
|
|
this.getAttribute('x1', true).setValue(0);
|
|
this.getAttribute('y1', true).setValue(0);
|
|
this.getAttribute('x2', true).setValue(1);
|
|
this.getAttribute('y2', true).setValue(0);
|
|
}
|
|
const x1 = isBoundingBoxUnits
|
|
? boundingBox.x + boundingBox.width * this.getAttribute('x1').getNumber()
|
|
: this.getAttribute('x1').getPixels('x');
|
|
const y1 = isBoundingBoxUnits
|
|
? boundingBox.y + boundingBox.height * this.getAttribute('y1').getNumber()
|
|
: this.getAttribute('y1').getPixels('y');
|
|
const x2 = isBoundingBoxUnits
|
|
? boundingBox.x + boundingBox.width * this.getAttribute('x2').getNumber()
|
|
: this.getAttribute('x2').getPixels('x');
|
|
const y2 = isBoundingBoxUnits
|
|
? boundingBox.y + boundingBox.height * this.getAttribute('y2').getNumber()
|
|
: this.getAttribute('y2').getPixels('y');
|
|
if (x1 === x2 && y1 === y2) {
|
|
return null;
|
|
}
|
|
return ctx.createLinearGradient(x1, y1, x2, y2);
|
|
}
|
|
}
|
|
|
|
class RadialGradientElement extends GradientElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'radialGradient';
|
|
this.attributesToInherit.push('cx', 'cy', 'r', 'fx', 'fy', 'fr');
|
|
}
|
|
getGradient(ctx, element) {
|
|
const isBoundingBoxUnits = this.getGradientUnits() === 'objectBoundingBox';
|
|
const boundingBox = element.getBoundingBox(ctx);
|
|
if (isBoundingBoxUnits && !boundingBox) {
|
|
return null;
|
|
}
|
|
if (!this.getAttribute('cx').hasValue()) {
|
|
this.getAttribute('cx', true).setValue('50%');
|
|
}
|
|
if (!this.getAttribute('cy').hasValue()) {
|
|
this.getAttribute('cy', true).setValue('50%');
|
|
}
|
|
if (!this.getAttribute('r').hasValue()) {
|
|
this.getAttribute('r', true).setValue('50%');
|
|
}
|
|
const cx = isBoundingBoxUnits
|
|
? boundingBox.x + boundingBox.width * this.getAttribute('cx').getNumber()
|
|
: this.getAttribute('cx').getPixels('x');
|
|
const cy = isBoundingBoxUnits
|
|
? boundingBox.y + boundingBox.height * this.getAttribute('cy').getNumber()
|
|
: this.getAttribute('cy').getPixels('y');
|
|
let fx = cx;
|
|
let fy = cy;
|
|
if (this.getAttribute('fx').hasValue()) {
|
|
fx = isBoundingBoxUnits
|
|
? boundingBox.x + boundingBox.width * this.getAttribute('fx').getNumber()
|
|
: this.getAttribute('fx').getPixels('x');
|
|
}
|
|
if (this.getAttribute('fy').hasValue()) {
|
|
fy = isBoundingBoxUnits
|
|
? boundingBox.y + boundingBox.height * this.getAttribute('fy').getNumber()
|
|
: this.getAttribute('fy').getPixels('y');
|
|
}
|
|
const r = isBoundingBoxUnits
|
|
? (boundingBox.width + boundingBox.height) / 2.0 * this.getAttribute('r').getNumber()
|
|
: this.getAttribute('r').getPixels();
|
|
const fr = this.getAttribute('fr').getPixels();
|
|
return ctx.createRadialGradient(fx, fy, fr, cx, cy, r);
|
|
}
|
|
}
|
|
|
|
class StopElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'stop';
|
|
const offset = Math.max(0, Math.min(1, this.getAttribute('offset').getNumber()));
|
|
const stopOpacity = this.getStyle('stop-opacity');
|
|
let stopColor = this.getStyle('stop-color', true);
|
|
if (stopColor.getString() === '') {
|
|
stopColor.setValue('#000');
|
|
}
|
|
if (stopOpacity.hasValue()) {
|
|
stopColor = stopColor.addOpacity(stopOpacity);
|
|
}
|
|
this.offset = offset;
|
|
this.color = stopColor.getColor();
|
|
}
|
|
}
|
|
|
|
class AnimateElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'animate';
|
|
this.duration = 0;
|
|
this.initialValue = null;
|
|
this.initialUnits = '';
|
|
this.removed = false;
|
|
this.frozen = false;
|
|
document.screen.animations.push(this);
|
|
this.begin = this.getAttribute('begin').getMilliseconds();
|
|
this.maxDuration = this.begin + this.getAttribute('dur').getMilliseconds();
|
|
this.from = this.getAttribute('from');
|
|
this.to = this.getAttribute('to');
|
|
this.values = new Property(document, 'values', null);
|
|
const valuesAttr = this.getAttribute('values');
|
|
if (valuesAttr.hasValue()) {
|
|
this.values.setValue(valuesAttr.getString().split(';'));
|
|
}
|
|
}
|
|
getProperty() {
|
|
const attributeType = this.getAttribute('attributeType').getString();
|
|
const attributeName = this.getAttribute('attributeName').getString();
|
|
if (attributeType === 'CSS') {
|
|
return this.parent.getStyle(attributeName, true);
|
|
}
|
|
return this.parent.getAttribute(attributeName, true);
|
|
}
|
|
calcValue() {
|
|
const { initialUnits } = this;
|
|
const { progress, from, to } = this.getProgress();
|
|
// tween value linearly
|
|
let newValue = from.getNumber() + (to.getNumber() - from.getNumber()) * progress;
|
|
if (initialUnits === '%') {
|
|
newValue *= 100.0; // numValue() returns 0-1 whereas properties are 0-100
|
|
}
|
|
return `${newValue}${initialUnits}`;
|
|
}
|
|
update(delta) {
|
|
const { parent } = this;
|
|
const prop = this.getProperty();
|
|
// set initial value
|
|
if (!this.initialValue) {
|
|
this.initialValue = prop.getString();
|
|
this.initialUnits = prop.getUnits();
|
|
}
|
|
// if we're past the end time
|
|
if (this.duration > this.maxDuration) {
|
|
const fill = this.getAttribute('fill').getString('remove');
|
|
// loop for indefinitely repeating animations
|
|
if (this.getAttribute('repeatCount').getString() === 'indefinite'
|
|
|| this.getAttribute('repeatDur').getString() === 'indefinite') {
|
|
this.duration = 0;
|
|
}
|
|
else if (fill === 'freeze' && !this.frozen) {
|
|
this.frozen = true;
|
|
parent.animationFrozen = true;
|
|
parent.animationFrozenValue = prop.getString();
|
|
}
|
|
else if (fill === 'remove' && !this.removed) {
|
|
this.removed = true;
|
|
prop.setValue(parent.animationFrozen
|
|
? parent.animationFrozenValue
|
|
: this.initialValue);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
this.duration += delta;
|
|
// if we're past the begin time
|
|
let updated = false;
|
|
if (this.begin < this.duration) {
|
|
let newValue = this.calcValue(); // tween
|
|
const typeAttr = this.getAttribute('type');
|
|
if (typeAttr.hasValue()) {
|
|
// for transform, etc.
|
|
const type = typeAttr.getString();
|
|
newValue = `${type}(${newValue})`;
|
|
}
|
|
prop.setValue(newValue);
|
|
updated = true;
|
|
}
|
|
return updated;
|
|
}
|
|
getProgress() {
|
|
const { document, values } = this;
|
|
const result = {
|
|
progress: (this.duration - this.begin) / (this.maxDuration - this.begin)
|
|
};
|
|
if (values.hasValue()) {
|
|
const p = result.progress * (values.getValue().length - 1);
|
|
const lb = Math.floor(p);
|
|
const ub = Math.ceil(p);
|
|
result.from = new Property(document, 'from', parseFloat(values.getValue()[lb]));
|
|
result.to = new Property(document, 'to', parseFloat(values.getValue()[ub]));
|
|
result.progress = (p - lb) / (ub - lb);
|
|
}
|
|
else {
|
|
result.from = this.from;
|
|
result.to = this.to;
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
|
|
class AnimateColorElement extends AnimateElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'animateColor';
|
|
}
|
|
calcValue() {
|
|
const { progress, from, to } = this.getProgress();
|
|
const colorFrom = new RGBColor(from.getColor());
|
|
const colorTo = new RGBColor(to.getColor());
|
|
if (colorFrom.ok && colorTo.ok) {
|
|
// tween color linearly
|
|
const r = colorFrom.r + (colorTo.r - colorFrom.r) * progress;
|
|
const g = colorFrom.g + (colorTo.g - colorFrom.g) * progress;
|
|
const b = colorFrom.b + (colorTo.b - colorFrom.b) * progress;
|
|
// ? alpha
|
|
return `rgb(${Math.floor(r)}, ${Math.floor(g)}, ${Math.floor(b)})`;
|
|
}
|
|
return this.getAttribute('from').getColor();
|
|
}
|
|
}
|
|
|
|
class AnimateTransformElement extends AnimateElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'animateTransform';
|
|
}
|
|
calcValue() {
|
|
const { progress, from, to } = this.getProgress();
|
|
// tween value linearly
|
|
const transformFrom = toNumbers(from.getString());
|
|
const transformTo = toNumbers(to.getString());
|
|
const newValue = transformFrom.map((from, i) => {
|
|
const to = transformTo[i];
|
|
return from + (to - from) * progress;
|
|
}).join(' ');
|
|
return newValue;
|
|
}
|
|
}
|
|
|
|
class FontElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'font';
|
|
this.glyphs = {};
|
|
this.horizAdvX = this.getAttribute('horiz-adv-x').getNumber();
|
|
const { definitions } = document;
|
|
const { children } = this;
|
|
for (const child of children) {
|
|
switch (child.type) {
|
|
case 'font-face': {
|
|
this.fontFace = child;
|
|
const fontFamilyStyle = child.getStyle('font-family');
|
|
if (fontFamilyStyle.hasValue()) {
|
|
definitions[fontFamilyStyle.getString()] = this;
|
|
}
|
|
break;
|
|
}
|
|
case 'missing-glyph':
|
|
this.missingGlyph = child;
|
|
break;
|
|
case 'glyph': {
|
|
const glyph = child;
|
|
if (glyph.arabicForm) {
|
|
this.isRTL = true;
|
|
this.isArabic = true;
|
|
if (typeof this.glyphs[glyph.unicode] === 'undefined') {
|
|
this.glyphs[glyph.unicode] = {};
|
|
}
|
|
this.glyphs[glyph.unicode][glyph.arabicForm] = glyph;
|
|
}
|
|
else {
|
|
this.glyphs[glyph.unicode] = glyph;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
render() {
|
|
// NO RENDER
|
|
}
|
|
}
|
|
|
|
class FontFaceElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'font-face';
|
|
this.ascent = this.getAttribute('ascent').getNumber();
|
|
this.descent = this.getAttribute('descent').getNumber();
|
|
this.unitsPerEm = this.getAttribute('units-per-em').getNumber();
|
|
}
|
|
}
|
|
|
|
class MissingGlyphElement extends PathElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'missing-glyph';
|
|
this.horizAdvX = 0;
|
|
}
|
|
}
|
|
|
|
class TRefElement extends TextElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'tref';
|
|
}
|
|
getText() {
|
|
const element = this.getHrefAttribute().getDefinition();
|
|
if (element) {
|
|
const firstChild = element.children[0];
|
|
if (firstChild) {
|
|
return firstChild.getText();
|
|
}
|
|
}
|
|
return '';
|
|
}
|
|
}
|
|
|
|
class AElement extends TextElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'a';
|
|
const { childNodes } = node;
|
|
const firstChild = childNodes[0];
|
|
const hasText = childNodes.length > 0
|
|
&& Array.from(childNodes).every(node => node.nodeType === 3);
|
|
this.hasText = hasText;
|
|
this.text = hasText
|
|
? this.getTextFromNode(firstChild)
|
|
: '';
|
|
}
|
|
getText() {
|
|
return this.text;
|
|
}
|
|
renderChildren(ctx) {
|
|
if (this.hasText) {
|
|
// render as text element
|
|
super.renderChildren(ctx);
|
|
const { document, x, y } = this;
|
|
const { mouse } = document.screen;
|
|
const fontSize = new Property(document, 'fontSize', Font.parse(document.ctx.font).fontSize);
|
|
// Do not calc bounding box if mouse is not working.
|
|
if (mouse.isWorking()) {
|
|
mouse.checkBoundingBox(this, new BoundingBox(x, y - fontSize.getPixels('y'), x + this.measureText(ctx), y));
|
|
}
|
|
}
|
|
else if (this.children.length > 0) {
|
|
// render as temporary group
|
|
const g = new GElement(this.document, null);
|
|
g.children = this.children;
|
|
g.parent = this;
|
|
g.render(ctx);
|
|
}
|
|
}
|
|
onClick() {
|
|
const { window } = this.document;
|
|
if (window) {
|
|
window.open(this.getHrefAttribute().getString());
|
|
}
|
|
}
|
|
onMouseMove() {
|
|
const ctx = this.document.ctx;
|
|
ctx.canvas.style.cursor = 'pointer';
|
|
}
|
|
}
|
|
|
|
class TextPathElement extends TextElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'textPath';
|
|
this.textWidth = 0;
|
|
this.textHeight = 0;
|
|
this.pathLength = -1;
|
|
this.glyphInfo = null;
|
|
this.letterSpacingCache = [];
|
|
this.measuresCache = new Map([['', 0]]);
|
|
const pathElement = this.getHrefAttribute().getDefinition();
|
|
this.text = this.getTextFromNode();
|
|
this.dataArray = this.parsePathData(pathElement);
|
|
}
|
|
getText() {
|
|
return this.text;
|
|
}
|
|
path(ctx) {
|
|
const { dataArray } = this;
|
|
if (ctx) {
|
|
ctx.beginPath();
|
|
}
|
|
dataArray.forEach(({ type, points }) => {
|
|
switch (type) {
|
|
case PathParser.LINE_TO:
|
|
if (ctx) {
|
|
ctx.lineTo(points[0], points[1]);
|
|
}
|
|
break;
|
|
case PathParser.MOVE_TO:
|
|
if (ctx) {
|
|
ctx.moveTo(points[0], points[1]);
|
|
}
|
|
break;
|
|
case PathParser.CURVE_TO:
|
|
if (ctx) {
|
|
ctx.bezierCurveTo(points[0], points[1], points[2], points[3], points[4], points[5]);
|
|
}
|
|
break;
|
|
case PathParser.QUAD_TO:
|
|
if (ctx) {
|
|
ctx.quadraticCurveTo(points[0], points[1], points[2], points[3]);
|
|
}
|
|
break;
|
|
case PathParser.ARC: {
|
|
const [cx, cy, rx, ry, theta, dTheta, psi, fs] = points;
|
|
const r = rx > ry ? rx : ry;
|
|
const scaleX = rx > ry ? 1 : rx / ry;
|
|
const scaleY = rx > ry ? ry / rx : 1;
|
|
if (ctx) {
|
|
ctx.translate(cx, cy);
|
|
ctx.rotate(psi);
|
|
ctx.scale(scaleX, scaleY);
|
|
ctx.arc(0, 0, r, theta, theta + dTheta, Boolean(1 - fs));
|
|
ctx.scale(1 / scaleX, 1 / scaleY);
|
|
ctx.rotate(-psi);
|
|
ctx.translate(-cx, -cy);
|
|
}
|
|
break;
|
|
}
|
|
case PathParser.CLOSE_PATH:
|
|
if (ctx) {
|
|
ctx.closePath();
|
|
}
|
|
break;
|
|
}
|
|
});
|
|
}
|
|
renderChildren(ctx) {
|
|
this.setTextData(ctx);
|
|
ctx.save();
|
|
const textDecoration = this.parent.getStyle('text-decoration').getString();
|
|
const fontSize = this.getFontSize();
|
|
const { glyphInfo } = this;
|
|
const fill = ctx.fillStyle;
|
|
if (textDecoration === 'underline') {
|
|
ctx.beginPath();
|
|
}
|
|
glyphInfo.forEach((glyph, i) => {
|
|
const { p0, p1, rotation, text: partialText } = glyph;
|
|
ctx.save();
|
|
ctx.translate(p0.x, p0.y);
|
|
ctx.rotate(rotation);
|
|
if (ctx.fillStyle) {
|
|
ctx.fillText(partialText, 0, 0);
|
|
}
|
|
if (ctx.strokeStyle) {
|
|
ctx.strokeText(partialText, 0, 0);
|
|
}
|
|
ctx.restore();
|
|
if (textDecoration === 'underline') {
|
|
if (i === 0) {
|
|
ctx.moveTo(p0.x, p0.y + fontSize / 8);
|
|
}
|
|
ctx.lineTo(p1.x, p1.y + fontSize / 5);
|
|
}
|
|
// // To assist with debugging visually, uncomment following
|
|
//
|
|
// ctx.beginPath();
|
|
// if (i % 2)
|
|
// ctx.strokeStyle = 'red';
|
|
// else
|
|
// ctx.strokeStyle = 'green';
|
|
// ctx.moveTo(p0.x, p0.y);
|
|
// ctx.lineTo(p1.x, p1.y);
|
|
// ctx.stroke();
|
|
// ctx.closePath();
|
|
});
|
|
if (textDecoration === 'underline') {
|
|
ctx.lineWidth = fontSize / 20;
|
|
ctx.strokeStyle = fill;
|
|
ctx.stroke();
|
|
ctx.closePath();
|
|
}
|
|
ctx.restore();
|
|
}
|
|
getLetterSpacingAt(idx = 0) {
|
|
return this.letterSpacingCache[idx] || 0;
|
|
}
|
|
findSegmentToFitChar(ctx, anchor, textFullWidth, fullPathWidth, spacesNumber, inputOffset, dy, c, charI) {
|
|
let offset = inputOffset;
|
|
let glyphWidth = this.measureText(ctx, c);
|
|
if (c === ' '
|
|
&& anchor === 'justify'
|
|
&& textFullWidth < fullPathWidth) {
|
|
glyphWidth += (fullPathWidth - textFullWidth) / spacesNumber;
|
|
}
|
|
if (charI > -1) {
|
|
offset += this.getLetterSpacingAt(charI);
|
|
}
|
|
const splineStep = this.textHeight / 20;
|
|
const p0 = this.getEquidistantPointOnPath(offset, splineStep, 0);
|
|
const p1 = this.getEquidistantPointOnPath(offset + glyphWidth, splineStep, 0);
|
|
const segment = {
|
|
p0,
|
|
p1
|
|
};
|
|
const rotation = p0 && p1
|
|
? Math.atan2(p1.y - p0.y, p1.x - p0.x)
|
|
: 0;
|
|
if (dy) {
|
|
const dyX = Math.cos(Math.PI / 2 + rotation) * dy;
|
|
const dyY = Math.cos(-rotation) * dy;
|
|
segment.p0 = {
|
|
...p0,
|
|
x: p0.x + dyX,
|
|
y: p0.y + dyY
|
|
};
|
|
segment.p1 = {
|
|
...p1,
|
|
x: p1.x + dyX,
|
|
y: p1.y + dyY
|
|
};
|
|
}
|
|
offset += glyphWidth;
|
|
return {
|
|
offset,
|
|
segment,
|
|
rotation
|
|
};
|
|
}
|
|
measureText(ctx, text) {
|
|
const { measuresCache } = this;
|
|
const targetText = text || this.getText();
|
|
if (measuresCache.has(targetText)) {
|
|
return measuresCache.get(targetText);
|
|
}
|
|
const measure = this.measureTargetText(ctx, targetText);
|
|
measuresCache.set(targetText, measure);
|
|
return measure;
|
|
}
|
|
// This method supposes what all custom fonts already loaded.
|
|
// If some font will be loaded after this method call, <textPath> will not be rendered correctly.
|
|
// You need to call this method manually to update glyphs cache.
|
|
setTextData(ctx) {
|
|
if (this.glyphInfo) {
|
|
return;
|
|
}
|
|
const renderText = this.getText();
|
|
const chars = renderText.split('');
|
|
const spacesNumber = renderText.split(' ').length - 1;
|
|
const dx = this.parent.getAttribute('dx').split().map(_ => _.getPixels('x'));
|
|
const dy = this.parent.getAttribute('dy').getPixels('y');
|
|
const anchor = this.parent.getStyle('text-anchor').getString('start');
|
|
const thisSpacing = this.getStyle('letter-spacing');
|
|
const parentSpacing = this.parent.getStyle('letter-spacing');
|
|
let letterSpacing = 0;
|
|
if (!thisSpacing.hasValue()
|
|
|| thisSpacing.getValue() === 'inherit') {
|
|
letterSpacing = parentSpacing.getPixels();
|
|
}
|
|
else if (thisSpacing.hasValue()) {
|
|
if (thisSpacing.getValue() !== 'initial'
|
|
&& thisSpacing.getValue() !== 'unset') {
|
|
letterSpacing = thisSpacing.getPixels();
|
|
}
|
|
}
|
|
// fill letter-spacing cache
|
|
const letterSpacingCache = [];
|
|
const textLen = renderText.length;
|
|
this.letterSpacingCache = letterSpacingCache;
|
|
for (let i = 0; i < textLen; i++) {
|
|
letterSpacingCache.push(typeof dx[i] !== 'undefined'
|
|
? dx[i]
|
|
: letterSpacing);
|
|
}
|
|
const dxSum = letterSpacingCache.reduce((acc, cur, i) => (i === 0
|
|
? 0
|
|
: acc + cur || 0), 0);
|
|
const textWidth = this.measureText(ctx);
|
|
const textFullWidth = Math.max(textWidth + dxSum, 0);
|
|
this.textWidth = textWidth;
|
|
this.textHeight = this.getFontSize();
|
|
this.glyphInfo = [];
|
|
const fullPathWidth = this.getPathLength();
|
|
const startOffset = this.getStyle('startOffset').getNumber(0) * fullPathWidth;
|
|
let offset = 0;
|
|
if (anchor === 'middle'
|
|
|| anchor === 'center') {
|
|
offset = -textFullWidth / 2;
|
|
}
|
|
if (anchor === 'end'
|
|
|| anchor === 'right') {
|
|
offset = -textFullWidth;
|
|
}
|
|
offset += startOffset;
|
|
chars.forEach((char, i) => {
|
|
// Find such segment what distance between p0 and p1 is approx. width of glyph
|
|
const { offset: nextOffset, segment, rotation } = this.findSegmentToFitChar(ctx, anchor, textFullWidth, fullPathWidth, spacesNumber, offset, dy, char, i);
|
|
offset = nextOffset;
|
|
if (!segment.p0 || !segment.p1) {
|
|
return;
|
|
}
|
|
// const width = this.getLineLength(
|
|
// segment.p0.x,
|
|
// segment.p0.y,
|
|
// segment.p1.x,
|
|
// segment.p1.y
|
|
// );
|
|
// Note: Since glyphs are rendered one at a time, any kerning pair data built into the font will not be used.
|
|
// Can foresee having a rough pair table built in that the developer can override as needed.
|
|
// Or use "dx" attribute of the <text> node as a naive replacement
|
|
// const kern = 0;
|
|
// placeholder for future implementation
|
|
// const midpoint = this.getPointOnLine(
|
|
// kern + width / 2.0,
|
|
// segment.p0.x, segment.p0.y, segment.p1.x, segment.p1.y
|
|
// );
|
|
this.glyphInfo.push({
|
|
// transposeX: midpoint.x,
|
|
// transposeY: midpoint.y,
|
|
text: chars[i],
|
|
p0: segment.p0,
|
|
p1: segment.p1,
|
|
rotation
|
|
});
|
|
});
|
|
}
|
|
parsePathData(path) {
|
|
this.pathLength = -1; // reset path length
|
|
if (!path) {
|
|
return [];
|
|
}
|
|
const pathCommands = [];
|
|
const { pathParser } = path;
|
|
pathParser.reset();
|
|
// convert l, H, h, V, and v to L
|
|
while (!pathParser.isEnd()) {
|
|
const { current } = pathParser;
|
|
const startX = current ? current.x : 0;
|
|
const startY = current ? current.y : 0;
|
|
const command = pathParser.next();
|
|
let nextCommandType = command.type;
|
|
let points = [];
|
|
switch (command.type) {
|
|
case PathParser.MOVE_TO:
|
|
this.pathM(pathParser, points);
|
|
break;
|
|
case PathParser.LINE_TO:
|
|
nextCommandType = this.pathL(pathParser, points);
|
|
break;
|
|
case PathParser.HORIZ_LINE_TO:
|
|
nextCommandType = this.pathH(pathParser, points);
|
|
break;
|
|
case PathParser.VERT_LINE_TO:
|
|
nextCommandType = this.pathV(pathParser, points);
|
|
break;
|
|
case PathParser.CURVE_TO:
|
|
this.pathC(pathParser, points);
|
|
break;
|
|
case PathParser.SMOOTH_CURVE_TO:
|
|
nextCommandType = this.pathS(pathParser, points);
|
|
break;
|
|
case PathParser.QUAD_TO:
|
|
this.pathQ(pathParser, points);
|
|
break;
|
|
case PathParser.SMOOTH_QUAD_TO:
|
|
nextCommandType = this.pathT(pathParser, points);
|
|
break;
|
|
case PathParser.ARC:
|
|
points = this.pathA(pathParser);
|
|
break;
|
|
case PathParser.CLOSE_PATH:
|
|
PathElement.pathZ(pathParser);
|
|
break;
|
|
}
|
|
if (command.type !== PathParser.CLOSE_PATH) {
|
|
pathCommands.push({
|
|
type: nextCommandType,
|
|
points,
|
|
start: {
|
|
x: startX,
|
|
y: startY
|
|
},
|
|
pathLength: this.calcLength(startX, startY, nextCommandType, points)
|
|
});
|
|
}
|
|
else {
|
|
pathCommands.push({
|
|
type: PathParser.CLOSE_PATH,
|
|
points: [],
|
|
pathLength: 0
|
|
});
|
|
}
|
|
}
|
|
return pathCommands;
|
|
}
|
|
pathM(pathParser, points) {
|
|
const { x, y } = PathElement.pathM(pathParser).point;
|
|
points.push(x, y);
|
|
}
|
|
pathL(pathParser, points) {
|
|
const { x, y } = PathElement.pathL(pathParser).point;
|
|
points.push(x, y);
|
|
return PathParser.LINE_TO;
|
|
}
|
|
pathH(pathParser, points) {
|
|
const { x, y } = PathElement.pathH(pathParser).point;
|
|
points.push(x, y);
|
|
return PathParser.LINE_TO;
|
|
}
|
|
pathV(pathParser, points) {
|
|
const { x, y } = PathElement.pathV(pathParser).point;
|
|
points.push(x, y);
|
|
return PathParser.LINE_TO;
|
|
}
|
|
pathC(pathParser, points) {
|
|
const { point, controlPoint, currentPoint } = PathElement.pathC(pathParser);
|
|
points.push(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
pathS(pathParser, points) {
|
|
const { point, controlPoint, currentPoint } = PathElement.pathS(pathParser);
|
|
points.push(point.x, point.y, controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
return PathParser.CURVE_TO;
|
|
}
|
|
pathQ(pathParser, points) {
|
|
const { controlPoint, currentPoint } = PathElement.pathQ(pathParser);
|
|
points.push(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
}
|
|
pathT(pathParser, points) {
|
|
const { controlPoint, currentPoint } = PathElement.pathT(pathParser);
|
|
points.push(controlPoint.x, controlPoint.y, currentPoint.x, currentPoint.y);
|
|
return PathParser.QUAD_TO;
|
|
}
|
|
pathA(pathParser) {
|
|
let { rX, rY, sweepFlag, xAxisRotation, centp, a1, ad } = PathElement.pathA(pathParser);
|
|
if (sweepFlag === 0 && ad > 0) {
|
|
ad -= 2 * Math.PI;
|
|
}
|
|
if (sweepFlag === 1 && ad < 0) {
|
|
ad += 2 * Math.PI;
|
|
}
|
|
return [
|
|
centp.x,
|
|
centp.y,
|
|
rX,
|
|
rY,
|
|
a1,
|
|
ad,
|
|
xAxisRotation,
|
|
sweepFlag
|
|
];
|
|
}
|
|
calcLength(x, y, commandType, points) {
|
|
let len = 0;
|
|
let p1 = null;
|
|
let p2 = null;
|
|
let t = 0;
|
|
switch (commandType) {
|
|
case PathParser.LINE_TO:
|
|
return this.getLineLength(x, y, points[0], points[1]);
|
|
case PathParser.CURVE_TO:
|
|
// Approximates by breaking curve into 100 line segments
|
|
len = 0.0;
|
|
p1 = this.getPointOnCubicBezier(0, x, y, points[0], points[1], points[2], points[3], points[4], points[5]);
|
|
for (t = 0.01; t <= 1; t += 0.01) {
|
|
p2 = this.getPointOnCubicBezier(t, x, y, points[0], points[1], points[2], points[3], points[4], points[5]);
|
|
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
|
|
p1 = p2;
|
|
}
|
|
return len;
|
|
case PathParser.QUAD_TO:
|
|
// Approximates by breaking curve into 100 line segments
|
|
len = 0.0;
|
|
p1 = this.getPointOnQuadraticBezier(0, x, y, points[0], points[1], points[2], points[3]);
|
|
for (t = 0.01; t <= 1; t += 0.01) {
|
|
p2 = this.getPointOnQuadraticBezier(t, x, y, points[0], points[1], points[2], points[3]);
|
|
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
|
|
p1 = p2;
|
|
}
|
|
return len;
|
|
case PathParser.ARC: {
|
|
// Approximates by breaking curve into line segments
|
|
len = 0.0;
|
|
const start = points[4];
|
|
// 4 = theta
|
|
const dTheta = points[5];
|
|
// 5 = dTheta
|
|
const end = points[4] + dTheta;
|
|
let inc = Math.PI / 180.0;
|
|
// 1 degree resolution
|
|
if (Math.abs(start - end) < inc) {
|
|
inc = Math.abs(start - end);
|
|
}
|
|
// Note: for purpose of calculating arc length, not going to worry about rotating X-axis by angle psi
|
|
p1 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], start, 0);
|
|
if (dTheta < 0) { // clockwise
|
|
for (t = start - inc; t > end; t -= inc) {
|
|
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], t, 0);
|
|
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
|
|
p1 = p2;
|
|
}
|
|
}
|
|
else { // counter-clockwise
|
|
for (t = start + inc; t < end; t += inc) {
|
|
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], t, 0);
|
|
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
|
|
p1 = p2;
|
|
}
|
|
}
|
|
p2 = this.getPointOnEllipticalArc(points[0], points[1], points[2], points[3], end, 0);
|
|
len += this.getLineLength(p1.x, p1.y, p2.x, p2.y);
|
|
return len;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
getPointOnLine(dist, p1x, p1y, p2x, p2y, fromX = p1x, fromY = p1y) {
|
|
const m = (p2y - p1y) / ((p2x - p1x) + PSEUDO_ZERO);
|
|
let run = Math.sqrt(dist * dist / (1 + m * m));
|
|
if (p2x < p1x) {
|
|
run *= -1;
|
|
}
|
|
let rise = m * run;
|
|
let pt = null;
|
|
if (p2x === p1x) { // vertical line
|
|
pt = {
|
|
x: fromX,
|
|
y: fromY + rise
|
|
};
|
|
}
|
|
else if ((fromY - p1y) / ((fromX - p1x) + PSEUDO_ZERO) === m) {
|
|
pt = {
|
|
x: fromX + run,
|
|
y: fromY + rise
|
|
};
|
|
}
|
|
else {
|
|
let ix = 0;
|
|
let iy = 0;
|
|
const len = this.getLineLength(p1x, p1y, p2x, p2y);
|
|
if (len < PSEUDO_ZERO) {
|
|
return null;
|
|
}
|
|
let u = ((fromX - p1x) * (p2x - p1x))
|
|
+ ((fromY - p1y) * (p2y - p1y));
|
|
u /= len * len;
|
|
ix = p1x + u * (p2x - p1x);
|
|
iy = p1y + u * (p2y - p1y);
|
|
const pRise = this.getLineLength(fromX, fromY, ix, iy);
|
|
const pRun = Math.sqrt(dist * dist - pRise * pRise);
|
|
run = Math.sqrt(pRun * pRun / (1 + m * m));
|
|
if (p2x < p1x) {
|
|
run *= -1;
|
|
}
|
|
rise = m * run;
|
|
pt = {
|
|
x: ix + run,
|
|
y: iy + rise
|
|
};
|
|
}
|
|
return pt;
|
|
}
|
|
getPointOnPath(distance) {
|
|
const fullLen = this.getPathLength();
|
|
let cumulativePathLength = 0;
|
|
let p = null;
|
|
if (distance < -0.00005
|
|
|| distance - 0.00005 > fullLen) {
|
|
return null;
|
|
}
|
|
const { dataArray } = this;
|
|
for (const command of dataArray) {
|
|
if (command
|
|
&& (command.pathLength < 0.00005
|
|
|| cumulativePathLength + command.pathLength + 0.00005 < distance)) {
|
|
cumulativePathLength += command.pathLength;
|
|
continue;
|
|
}
|
|
const delta = distance - cumulativePathLength;
|
|
let currentT = 0;
|
|
switch (command.type) {
|
|
case PathParser.LINE_TO:
|
|
p = this.getPointOnLine(delta, command.start.x, command.start.y, command.points[0], command.points[1], command.start.x, command.start.y);
|
|
break;
|
|
case PathParser.ARC: {
|
|
const start = command.points[4];
|
|
// 4 = theta
|
|
const dTheta = command.points[5];
|
|
// 5 = dTheta
|
|
const end = command.points[4] + dTheta;
|
|
currentT = start + delta / command.pathLength * dTheta;
|
|
if (dTheta < 0 && currentT < end
|
|
|| dTheta >= 0 && currentT > end) {
|
|
break;
|
|
}
|
|
p = this.getPointOnEllipticalArc(command.points[0], command.points[1], command.points[2], command.points[3], currentT, command.points[6]);
|
|
break;
|
|
}
|
|
case PathParser.CURVE_TO:
|
|
currentT = delta / command.pathLength;
|
|
if (currentT > 1) {
|
|
currentT = 1;
|
|
}
|
|
p = this.getPointOnCubicBezier(currentT, command.start.x, command.start.y, command.points[0], command.points[1], command.points[2], command.points[3], command.points[4], command.points[5]);
|
|
break;
|
|
case PathParser.QUAD_TO:
|
|
currentT = delta / command.pathLength;
|
|
if (currentT > 1) {
|
|
currentT = 1;
|
|
}
|
|
p = this.getPointOnQuadraticBezier(currentT, command.start.x, command.start.y, command.points[0], command.points[1], command.points[2], command.points[3]);
|
|
break;
|
|
}
|
|
if (p) {
|
|
return p;
|
|
}
|
|
break;
|
|
}
|
|
return null;
|
|
}
|
|
getLineLength(x1, y1, x2, y2) {
|
|
return Math.sqrt((x2 - x1) * (x2 - x1)
|
|
+ (y2 - y1) * (y2 - y1));
|
|
}
|
|
getPathLength() {
|
|
if (this.pathLength === -1) {
|
|
this.pathLength = this.dataArray.reduce((length, command) => (command.pathLength > 0
|
|
? length + command.pathLength
|
|
: length), 0);
|
|
}
|
|
return this.pathLength;
|
|
}
|
|
getPointOnCubicBezier(pct, p1x, p1y, p2x, p2y, p3x, p3y, p4x, p4y) {
|
|
const x = p4x * CB1(pct) + p3x * CB2(pct) + p2x * CB3(pct) + p1x * CB4(pct);
|
|
const y = p4y * CB1(pct) + p3y * CB2(pct) + p2y * CB3(pct) + p1y * CB4(pct);
|
|
return {
|
|
x,
|
|
y
|
|
};
|
|
}
|
|
getPointOnQuadraticBezier(pct, p1x, p1y, p2x, p2y, p3x, p3y) {
|
|
const x = p3x * QB1(pct) + p2x * QB2(pct) + p1x * QB3(pct);
|
|
const y = p3y * QB1(pct) + p2y * QB2(pct) + p1y * QB3(pct);
|
|
return {
|
|
x,
|
|
y
|
|
};
|
|
}
|
|
getPointOnEllipticalArc(cx, cy, rx, ry, theta, psi) {
|
|
const cosPsi = Math.cos(psi);
|
|
const sinPsi = Math.sin(psi);
|
|
const pt = {
|
|
x: rx * Math.cos(theta),
|
|
y: ry * Math.sin(theta)
|
|
};
|
|
return {
|
|
x: cx + (pt.x * cosPsi - pt.y * sinPsi),
|
|
y: cy + (pt.x * sinPsi + pt.y * cosPsi)
|
|
};
|
|
}
|
|
// TODO need some optimisations. possibly build cache only for curved segments?
|
|
buildEquidistantCache(inputStep, inputPrecision) {
|
|
const fullLen = this.getPathLength();
|
|
const precision = inputPrecision || 0.25; // accuracy vs performance
|
|
const step = inputStep || fullLen / 100;
|
|
if (!this.equidistantCache
|
|
|| this.equidistantCache.step !== step
|
|
|| this.equidistantCache.precision !== precision) {
|
|
// Prepare cache
|
|
this.equidistantCache = {
|
|
step,
|
|
precision,
|
|
points: []
|
|
};
|
|
// Calculate points
|
|
let s = 0;
|
|
for (let l = 0; l <= fullLen; l += precision) {
|
|
const p0 = this.getPointOnPath(l);
|
|
const p1 = this.getPointOnPath(l + precision);
|
|
if (!p0 || !p1) {
|
|
continue;
|
|
}
|
|
s += this.getLineLength(p0.x, p0.y, p1.x, p1.y);
|
|
if (s >= step) {
|
|
this.equidistantCache.points.push({
|
|
x: p0.x,
|
|
y: p0.y,
|
|
distance: l
|
|
});
|
|
s -= step;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
getEquidistantPointOnPath(targetDistance, step, precision) {
|
|
this.buildEquidistantCache(step, precision);
|
|
if (targetDistance < 0
|
|
|| targetDistance - this.getPathLength() > 0.00005) {
|
|
return null;
|
|
}
|
|
const idx = Math.round(targetDistance
|
|
/ this.getPathLength()
|
|
* (this.equidistantCache.points.length - 1));
|
|
return this.equidistantCache.points[idx] || null;
|
|
}
|
|
}
|
|
|
|
// groups: 1: mime-type (+ charset), 2: mime-type (w/o charset), 3: charset, 4: base64?, 5: body
|
|
const dataUriRegex = /^\s*data:(([^/,;]+\/[^/,;]+)(?:;([^,;=]+=[^,;=]+))?)?(?:;(base64))?,(.*)$/i;
|
|
class ImageElement extends RenderedElement {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'image';
|
|
this.loaded = false;
|
|
const href = this.getHrefAttribute().getString();
|
|
if (!href) {
|
|
return;
|
|
}
|
|
const isSvg = href.endsWith('.svg') || /^\s*data:image\/svg\+xml/i.test(href);
|
|
document.images.push(this);
|
|
if (!isSvg) {
|
|
void this.loadImage(href);
|
|
}
|
|
else {
|
|
void this.loadSvg(href);
|
|
}
|
|
this.isSvg = isSvg;
|
|
}
|
|
async loadImage(href) {
|
|
try {
|
|
const image = await this.document.createImage(href);
|
|
this.image = image;
|
|
}
|
|
catch (err) {
|
|
console.error(`Error while loading image "${href}":`, err);
|
|
}
|
|
this.loaded = true;
|
|
}
|
|
async loadSvg(href) {
|
|
const match = dataUriRegex.exec(href);
|
|
if (match) {
|
|
const data = match[5];
|
|
if (match[4] === 'base64') {
|
|
this.image = atob(data);
|
|
}
|
|
else {
|
|
this.image = decodeURIComponent(data);
|
|
}
|
|
}
|
|
else {
|
|
try {
|
|
const response = await this.document.fetch(href);
|
|
const svg = await response.text();
|
|
this.image = svg;
|
|
}
|
|
catch (err) {
|
|
console.error(`Error while loading image "${href}":`, err);
|
|
}
|
|
}
|
|
this.loaded = true;
|
|
}
|
|
renderChildren(ctx) {
|
|
const { document, image, loaded } = this;
|
|
const x = this.getAttribute('x').getPixels('x');
|
|
const y = this.getAttribute('y').getPixels('y');
|
|
const width = this.getStyle('width').getPixels('x');
|
|
const height = this.getStyle('height').getPixels('y');
|
|
if (!loaded || !image
|
|
|| !width || !height) {
|
|
return;
|
|
}
|
|
ctx.save();
|
|
ctx.translate(x, y);
|
|
if (this.isSvg) {
|
|
const subDocument = document.canvg.forkString(ctx, this.image, {
|
|
ignoreMouse: true,
|
|
ignoreAnimation: true,
|
|
ignoreDimensions: true,
|
|
ignoreClear: true,
|
|
offsetX: 0,
|
|
offsetY: 0,
|
|
scaleWidth: width,
|
|
scaleHeight: height
|
|
});
|
|
subDocument.document.documentElement.parent = this;
|
|
void subDocument.render();
|
|
}
|
|
else {
|
|
const image = this.image;
|
|
document.setViewBox({
|
|
ctx,
|
|
aspectRatio: this.getAttribute('preserveAspectRatio').getString(),
|
|
width,
|
|
desiredWidth: image.width,
|
|
height,
|
|
desiredHeight: image.height
|
|
});
|
|
if (this.loaded) {
|
|
if (typeof image.complete === 'undefined' || image.complete) {
|
|
ctx.drawImage(image, 0, 0);
|
|
}
|
|
}
|
|
}
|
|
ctx.restore();
|
|
}
|
|
getBoundingBox() {
|
|
const x = this.getAttribute('x').getPixels('x');
|
|
const y = this.getAttribute('y').getPixels('y');
|
|
const width = this.getStyle('width').getPixels('x');
|
|
const height = this.getStyle('height').getPixels('y');
|
|
return new BoundingBox(x, y, x + width, y + height);
|
|
}
|
|
}
|
|
|
|
class SymbolElement extends RenderedElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'symbol';
|
|
}
|
|
render(_) {
|
|
// NO RENDER
|
|
}
|
|
}
|
|
|
|
class SVGFontLoader {
|
|
constructor(document) {
|
|
this.document = document;
|
|
this.loaded = false;
|
|
document.fonts.push(this);
|
|
}
|
|
async load(fontFamily, url) {
|
|
try {
|
|
const { document } = this;
|
|
const svgDocument = await document.canvg.parser.load(url);
|
|
const fonts = svgDocument.getElementsByTagName('font');
|
|
Array.from(fonts).forEach((fontNode) => {
|
|
const font = document.createElement(fontNode);
|
|
document.definitions[fontFamily] = font;
|
|
});
|
|
}
|
|
catch (err) {
|
|
console.error(`Error while loading font "${url}":`, err);
|
|
}
|
|
this.loaded = true;
|
|
}
|
|
}
|
|
|
|
class StyleElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'style';
|
|
const css = compressSpaces(Array.from(node.childNodes)
|
|
// NEED TEST
|
|
.map(_ => _.textContent)
|
|
.join('')
|
|
.replace(/(\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, '') // remove comments
|
|
.replace(/@import.*;/g, '') // remove imports
|
|
);
|
|
const cssDefs = css.split('}');
|
|
cssDefs.forEach((_) => {
|
|
const def = _.trim();
|
|
if (!def) {
|
|
return;
|
|
}
|
|
const cssParts = def.split('{');
|
|
const cssClasses = cssParts[0].split(',');
|
|
const cssProps = cssParts[1].split(';');
|
|
cssClasses.forEach((_) => {
|
|
const cssClass = _.trim();
|
|
if (!cssClass) {
|
|
return;
|
|
}
|
|
const props = document.styles[cssClass] || {};
|
|
cssProps.forEach((cssProp) => {
|
|
const prop = cssProp.indexOf(':');
|
|
const name = cssProp.substr(0, prop).trim();
|
|
const value = cssProp.substr(prop + 1, cssProp.length - prop).trim();
|
|
if (name && value) {
|
|
props[name] = new Property(document, name, value);
|
|
}
|
|
});
|
|
document.styles[cssClass] = props;
|
|
document.stylesSpecificity[cssClass] = getSelectorSpecificity(cssClass);
|
|
if (cssClass === '@font-face') { // && !nodeEnv
|
|
const fontFamily = props['font-family'].getString().replace(/"|'/g, '');
|
|
const srcs = props.src.getString().split(',');
|
|
srcs.forEach((src) => {
|
|
if (src.indexOf('format("svg")') > 0) {
|
|
const url = parseExternalUrl(src);
|
|
if (url) {
|
|
void new SVGFontLoader(document).load(fontFamily, url);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
});
|
|
});
|
|
}
|
|
}
|
|
StyleElement.parseExternalUrl = parseExternalUrl;
|
|
|
|
class UseElement extends RenderedElement {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'use';
|
|
}
|
|
setContext(ctx) {
|
|
super.setContext(ctx);
|
|
const xAttr = this.getAttribute('x');
|
|
const yAttr = this.getAttribute('y');
|
|
if (xAttr.hasValue()) {
|
|
ctx.translate(xAttr.getPixels('x'), 0);
|
|
}
|
|
if (yAttr.hasValue()) {
|
|
ctx.translate(0, yAttr.getPixels('y'));
|
|
}
|
|
}
|
|
path(ctx) {
|
|
const { element } = this;
|
|
if (element) {
|
|
element.path(ctx);
|
|
}
|
|
}
|
|
renderChildren(ctx) {
|
|
const { document, element } = this;
|
|
if (element) {
|
|
let tempSvg = element;
|
|
if (element.type === 'symbol') {
|
|
// render me using a temporary svg element in symbol cases (http://www.w3.org/TR/SVG/struct.html#UseElement)
|
|
tempSvg = new SVGElement(document, null);
|
|
tempSvg.attributes.viewBox = new Property(document, 'viewBox', element.getAttribute('viewBox').getString());
|
|
tempSvg.attributes.preserveAspectRatio = new Property(document, 'preserveAspectRatio', element.getAttribute('preserveAspectRatio').getString());
|
|
tempSvg.attributes.overflow = new Property(document, 'overflow', element.getAttribute('overflow').getString());
|
|
tempSvg.children = element.children;
|
|
// element is still the parent of the children
|
|
element.styles.opacity = new Property(document, 'opacity', this.calculateOpacity());
|
|
}
|
|
if (tempSvg.type === 'svg') {
|
|
const widthStyle = this.getStyle('width', false, true);
|
|
const heightStyle = this.getStyle('height', false, true);
|
|
// if symbol or svg, inherit width/height from me
|
|
if (widthStyle.hasValue()) {
|
|
tempSvg.attributes.width = new Property(document, 'width', widthStyle.getString());
|
|
}
|
|
if (heightStyle.hasValue()) {
|
|
tempSvg.attributes.height = new Property(document, 'height', heightStyle.getString());
|
|
}
|
|
}
|
|
const oldParent = tempSvg.parent;
|
|
tempSvg.parent = this;
|
|
tempSvg.render(ctx);
|
|
tempSvg.parent = oldParent;
|
|
}
|
|
}
|
|
getBoundingBox(ctx) {
|
|
const { element } = this;
|
|
if (element) {
|
|
return element.getBoundingBox(ctx);
|
|
}
|
|
return null;
|
|
}
|
|
elementTransform() {
|
|
const { document, element } = this;
|
|
return Transform.fromElement(document, element);
|
|
}
|
|
get element() {
|
|
if (!this.cachedElement) {
|
|
this.cachedElement = this.getHrefAttribute().getDefinition();
|
|
}
|
|
return this.cachedElement;
|
|
}
|
|
}
|
|
|
|
function imGet(img, x, y, width, _height, rgba) {
|
|
return img[y * width * 4 + x * 4 + rgba];
|
|
}
|
|
function imSet(img, x, y, width, _height, rgba, val) {
|
|
img[y * width * 4 + x * 4 + rgba] = val;
|
|
}
|
|
function m(matrix, i, v) {
|
|
const mi = matrix[i];
|
|
return mi * v;
|
|
}
|
|
function c(a, m1, m2, m3) {
|
|
return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
|
|
}
|
|
class FeColorMatrixElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'feColorMatrix';
|
|
let matrix = toNumbers(this.getAttribute('values').getString());
|
|
switch (this.getAttribute('type').getString('matrix')) { // http://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
|
|
case 'saturate': {
|
|
const s = matrix[0];
|
|
/* eslint-disable array-element-newline */
|
|
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
|
|
];
|
|
/* eslint-enable array-element-newline */
|
|
break;
|
|
}
|
|
case 'hueRotate': {
|
|
const a = matrix[0] * Math.PI / 180.0;
|
|
/* eslint-disable array-element-newline */
|
|
matrix = [
|
|
c(a, 0.213, 0.787, -0.213), c(a, 0.715, -0.715, -0.715), c(a, 0.072, -0.072, 0.928), 0, 0,
|
|
c(a, 0.213, -0.213, 0.143), c(a, 0.715, 0.285, 0.140), c(a, 0.072, -0.072, -0.283), 0, 0,
|
|
c(a, 0.213, -0.213, -0.787), c(a, 0.715, -0.715, 0.715), c(a, 0.072, 0.928, 0.072), 0, 0,
|
|
0, 0, 0, 1, 0,
|
|
0, 0, 0, 0, 1
|
|
];
|
|
/* eslint-enable array-element-newline */
|
|
break;
|
|
}
|
|
case 'luminanceToAlpha':
|
|
/* eslint-disable array-element-newline */
|
|
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
|
|
];
|
|
/* eslint-enable array-element-newline */
|
|
break;
|
|
}
|
|
this.matrix = matrix;
|
|
this.includeOpacity = this.getAttribute('includeOpacity').hasValue();
|
|
}
|
|
apply(ctx, _x, _y, width, height) {
|
|
// assuming x==0 && y==0 for now
|
|
const { includeOpacity, matrix } = this;
|
|
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);
|
|
let nr = m(matrix, 0, r) + m(matrix, 1, g) + m(matrix, 2, b) + m(matrix, 3, a) + m(matrix, 4, 1);
|
|
let ng = m(matrix, 5, r) + m(matrix, 6, g) + m(matrix, 7, b) + m(matrix, 8, a) + m(matrix, 9, 1);
|
|
let nb = m(matrix, 10, r) + m(matrix, 11, g) + m(matrix, 12, b) + m(matrix, 13, a) + m(matrix, 14, 1);
|
|
let na = m(matrix, 15, r) + m(matrix, 16, g) + m(matrix, 17, b) + m(matrix, 18, a) + m(matrix, 19, 1);
|
|
if (includeOpacity) {
|
|
nr = 0;
|
|
ng = 0;
|
|
nb = 0;
|
|
na *= a / 255;
|
|
}
|
|
imSet(srcData.data, x, y, width, height, 0, nr);
|
|
imSet(srcData.data, x, y, width, height, 1, ng);
|
|
imSet(srcData.data, x, y, width, height, 2, nb);
|
|
imSet(srcData.data, x, y, width, height, 3, na);
|
|
}
|
|
}
|
|
ctx.clearRect(0, 0, width, height);
|
|
ctx.putImageData(srcData, 0, 0);
|
|
}
|
|
}
|
|
|
|
class MaskElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'mask';
|
|
}
|
|
apply(ctx, element) {
|
|
const { document } = this;
|
|
// render as temp svg
|
|
let x = this.getAttribute('x').getPixels('x');
|
|
let y = this.getAttribute('y').getPixels('y');
|
|
let width = this.getStyle('width').getPixels('x');
|
|
let height = this.getStyle('height').getPixels('y');
|
|
if (!width && !height) {
|
|
const boundingBox = new BoundingBox();
|
|
this.children.forEach((child) => {
|
|
boundingBox.addBoundingBox(child.getBoundingBox(ctx));
|
|
});
|
|
x = Math.floor(boundingBox.x1);
|
|
y = Math.floor(boundingBox.y1);
|
|
width = Math.floor(boundingBox.width);
|
|
height = Math.floor(boundingBox.height);
|
|
}
|
|
const ignoredStyles = this.removeStyles(element, MaskElement.ignoreStyles);
|
|
const maskCanvas = document.createCanvas(x + width, y + height);
|
|
const maskCtx = maskCanvas.getContext('2d');
|
|
document.screen.setDefaults(maskCtx);
|
|
this.renderChildren(maskCtx);
|
|
// convert mask to alpha with a fake node
|
|
// TODO: refactor out apply from feColorMatrix
|
|
new FeColorMatrixElement(document, ({
|
|
nodeType: 1,
|
|
childNodes: [],
|
|
attributes: [
|
|
{
|
|
nodeName: 'type',
|
|
value: 'luminanceToAlpha'
|
|
},
|
|
{
|
|
nodeName: 'includeOpacity',
|
|
value: 'true'
|
|
}
|
|
]
|
|
})).apply(maskCtx, 0, 0, x + width, y + height);
|
|
const tmpCanvas = document.createCanvas(x + width, y + height);
|
|
const tmpCtx = tmpCanvas.getContext('2d');
|
|
document.screen.setDefaults(tmpCtx);
|
|
element.render(tmpCtx);
|
|
tmpCtx.globalCompositeOperation = 'destination-in';
|
|
tmpCtx.fillStyle = maskCtx.createPattern(maskCanvas, 'no-repeat');
|
|
tmpCtx.fillRect(0, 0, x + width, y + height);
|
|
ctx.fillStyle = tmpCtx.createPattern(tmpCanvas, 'no-repeat');
|
|
ctx.fillRect(0, 0, x + width, y + height);
|
|
// reassign mask
|
|
this.restoreStyles(element, ignoredStyles);
|
|
}
|
|
render(_) {
|
|
// NO RENDER
|
|
}
|
|
}
|
|
MaskElement.ignoreStyles = [
|
|
'mask',
|
|
'transform',
|
|
'clip-path'
|
|
];
|
|
|
|
const noop = () => {
|
|
// NOOP
|
|
};
|
|
class ClipPathElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'clipPath';
|
|
}
|
|
apply(ctx) {
|
|
const { document } = this;
|
|
const contextProto = Reflect.getPrototypeOf(ctx);
|
|
const { beginPath, closePath } = ctx;
|
|
if (contextProto) {
|
|
contextProto.beginPath = noop;
|
|
contextProto.closePath = noop;
|
|
}
|
|
Reflect.apply(beginPath, ctx, []);
|
|
this.children.forEach((child) => {
|
|
if (typeof child.path === 'undefined') {
|
|
return;
|
|
}
|
|
let transform = typeof child.elementTransform !== 'undefined'
|
|
? child.elementTransform()
|
|
: null; // handle <use />
|
|
if (!transform) {
|
|
transform = Transform.fromElement(document, child);
|
|
}
|
|
if (transform) {
|
|
transform.apply(ctx);
|
|
}
|
|
child.path(ctx);
|
|
if (contextProto) {
|
|
contextProto.closePath = closePath;
|
|
}
|
|
if (transform) {
|
|
transform.unapply(ctx);
|
|
}
|
|
});
|
|
Reflect.apply(closePath, ctx, []);
|
|
ctx.clip();
|
|
if (contextProto) {
|
|
contextProto.beginPath = beginPath;
|
|
contextProto.closePath = closePath;
|
|
}
|
|
}
|
|
render(_) {
|
|
// NO RENDER
|
|
}
|
|
}
|
|
|
|
class FilterElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'filter';
|
|
}
|
|
apply(ctx, element) {
|
|
// render as temp svg
|
|
const { document, children } = this;
|
|
const boundingBox = element.getBoundingBox(ctx);
|
|
if (!boundingBox) {
|
|
return;
|
|
}
|
|
let px = 0;
|
|
let py = 0;
|
|
children.forEach((child) => {
|
|
const efd = child.extraFilterDistance || 0;
|
|
px = Math.max(px, efd);
|
|
py = Math.max(py, efd);
|
|
});
|
|
const width = Math.floor(boundingBox.width);
|
|
const height = Math.floor(boundingBox.height);
|
|
const tmpCanvasWidth = width + 2 * px;
|
|
const tmpCanvasHeight = height + 2 * py;
|
|
if (tmpCanvasWidth < 1 || tmpCanvasHeight < 1) {
|
|
return;
|
|
}
|
|
const x = Math.floor(boundingBox.x);
|
|
const y = Math.floor(boundingBox.y);
|
|
const ignoredStyles = this.removeStyles(element, FilterElement.ignoreStyles);
|
|
const tmpCanvas = document.createCanvas(tmpCanvasWidth, tmpCanvasHeight);
|
|
const tmpCtx = tmpCanvas.getContext('2d');
|
|
document.screen.setDefaults(tmpCtx);
|
|
tmpCtx.translate(-x + px, -y + py);
|
|
element.render(tmpCtx);
|
|
// apply filters
|
|
children.forEach((child) => {
|
|
if (typeof child.apply === 'function') {
|
|
child.apply(tmpCtx, 0, 0, tmpCanvasWidth, tmpCanvasHeight);
|
|
}
|
|
});
|
|
// render on me
|
|
ctx.drawImage(tmpCanvas, 0, 0, tmpCanvasWidth, tmpCanvasHeight, x - px, y - py, tmpCanvasWidth, tmpCanvasHeight);
|
|
this.restoreStyles(element, ignoredStyles);
|
|
}
|
|
render(_) {
|
|
// NO RENDER
|
|
}
|
|
}
|
|
FilterElement.ignoreStyles = [
|
|
'filter',
|
|
'transform',
|
|
'clip-path'
|
|
];
|
|
|
|
class FeDropShadowElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'feDropShadow';
|
|
this.addStylesFromStyleDefinition();
|
|
}
|
|
apply(_, _x, _y, _width, _height) {
|
|
// TODO: implement
|
|
}
|
|
}
|
|
|
|
class FeMorphologyElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'feMorphology';
|
|
}
|
|
apply(_, _x, _y, _width, _height) {
|
|
// TODO: implement
|
|
}
|
|
}
|
|
|
|
class FeCompositeElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'feComposite';
|
|
}
|
|
apply(_, _x, _y, _width, _height) {
|
|
// TODO: implement
|
|
}
|
|
}
|
|
|
|
class FeGaussianBlurElement extends Element {
|
|
constructor(document, node, captureTextNodes) {
|
|
super(document, node, captureTextNodes);
|
|
this.type = 'feGaussianBlur';
|
|
this.blurRadius = Math.floor(this.getAttribute('stdDeviation').getNumber());
|
|
this.extraFilterDistance = this.blurRadius;
|
|
}
|
|
apply(ctx, x, y, width, height) {
|
|
const { document, blurRadius } = this;
|
|
const body = document.window
|
|
? document.window.document.body
|
|
: null;
|
|
const canvas = ctx.canvas;
|
|
// StackBlur requires canvas be on document
|
|
canvas.id = document.getUniqueId();
|
|
if (body) {
|
|
canvas.style.display = 'none';
|
|
body.appendChild(canvas);
|
|
}
|
|
canvasRGBA(canvas, x, y, width, height, blurRadius);
|
|
if (body) {
|
|
body.removeChild(canvas);
|
|
}
|
|
}
|
|
}
|
|
|
|
class TitleElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'title';
|
|
}
|
|
}
|
|
|
|
class DescElement extends Element {
|
|
constructor() {
|
|
super(...arguments);
|
|
this.type = 'desc';
|
|
}
|
|
}
|
|
|
|
const elements = {
|
|
'svg': SVGElement,
|
|
'rect': RectElement,
|
|
'circle': CircleElement,
|
|
'ellipse': EllipseElement,
|
|
'line': LineElement,
|
|
'polyline': PolylineElement,
|
|
'polygon': PolygonElement,
|
|
'path': PathElement,
|
|
'pattern': PatternElement,
|
|
'marker': MarkerElement,
|
|
'defs': DefsElement,
|
|
'linearGradient': LinearGradientElement,
|
|
'radialGradient': RadialGradientElement,
|
|
'stop': StopElement,
|
|
'animate': AnimateElement,
|
|
'animateColor': AnimateColorElement,
|
|
'animateTransform': AnimateTransformElement,
|
|
'font': FontElement,
|
|
'font-face': FontFaceElement,
|
|
'missing-glyph': MissingGlyphElement,
|
|
'glyph': GlyphElement,
|
|
'text': TextElement,
|
|
'tspan': TSpanElement,
|
|
'tref': TRefElement,
|
|
'a': AElement,
|
|
'textPath': TextPathElement,
|
|
'image': ImageElement,
|
|
'g': GElement,
|
|
'symbol': SymbolElement,
|
|
'style': StyleElement,
|
|
'use': UseElement,
|
|
'mask': MaskElement,
|
|
'clipPath': ClipPathElement,
|
|
'filter': FilterElement,
|
|
'feDropShadow': FeDropShadowElement,
|
|
'feMorphology': FeMorphologyElement,
|
|
'feComposite': FeCompositeElement,
|
|
'feColorMatrix': FeColorMatrixElement,
|
|
'feGaussianBlur': FeGaussianBlurElement,
|
|
'title': TitleElement,
|
|
'desc': DescElement
|
|
};
|
|
|
|
function createCanvas(width, height) {
|
|
const canvas = document.createElement('canvas');
|
|
canvas.width = width;
|
|
canvas.height = height;
|
|
return canvas;
|
|
}
|
|
async function createImage(src, anonymousCrossOrigin = false) {
|
|
const image = document.createElement('img');
|
|
if (anonymousCrossOrigin) {
|
|
image.crossOrigin = 'Anonymous';
|
|
}
|
|
return new Promise((resolve, reject) => {
|
|
image.onload = () => {
|
|
resolve(image);
|
|
};
|
|
image.onerror = (_event, _source, _lineno, _colno, error) => {
|
|
reject(error);
|
|
};
|
|
image.src = src;
|
|
});
|
|
}
|
|
class Document {
|
|
constructor(canvg, { rootEmSize = 12, emSize = 12, createCanvas = Document.createCanvas, createImage = Document.createImage, anonymousCrossOrigin } = {}) {
|
|
this.canvg = canvg;
|
|
this.definitions = {};
|
|
this.styles = {};
|
|
this.stylesSpecificity = {};
|
|
this.images = [];
|
|
this.fonts = [];
|
|
this.emSizeStack = [];
|
|
this.uniqueId = 0;
|
|
this.screen = canvg.screen;
|
|
this.rootEmSize = rootEmSize;
|
|
this.emSize = emSize;
|
|
this.createCanvas = createCanvas;
|
|
this.createImage = this.bindCreateImage(createImage, anonymousCrossOrigin);
|
|
this.screen.wait(this.isImagesLoaded.bind(this));
|
|
this.screen.wait(this.isFontsLoaded.bind(this));
|
|
}
|
|
bindCreateImage(createImage, anonymousCrossOrigin) {
|
|
if (typeof anonymousCrossOrigin === 'boolean') {
|
|
return (source, forceAnonymousCrossOrigin) => createImage(source, typeof forceAnonymousCrossOrigin === 'boolean'
|
|
? forceAnonymousCrossOrigin
|
|
: anonymousCrossOrigin);
|
|
}
|
|
return createImage;
|
|
}
|
|
get window() {
|
|
return this.screen.window;
|
|
}
|
|
get fetch() {
|
|
return this.screen.fetch;
|
|
}
|
|
get ctx() {
|
|
return this.screen.ctx;
|
|
}
|
|
get emSize() {
|
|
const { emSizeStack } = this;
|
|
return emSizeStack[emSizeStack.length - 1];
|
|
}
|
|
set emSize(value) {
|
|
const { emSizeStack } = this;
|
|
emSizeStack.push(value);
|
|
}
|
|
popEmSize() {
|
|
const { emSizeStack } = this;
|
|
emSizeStack.pop();
|
|
}
|
|
getUniqueId() {
|
|
return `canvg${++this.uniqueId}`;
|
|
}
|
|
isImagesLoaded() {
|
|
return this.images.every(_ => _.loaded);
|
|
}
|
|
isFontsLoaded() {
|
|
return this.fonts.every(_ => _.loaded);
|
|
}
|
|
createDocumentElement(document) {
|
|
const documentElement = this.createElement(document.documentElement);
|
|
documentElement.root = true;
|
|
documentElement.addStylesFromStyleDefinition();
|
|
this.documentElement = documentElement;
|
|
return documentElement;
|
|
}
|
|
createElement(node) {
|
|
const elementType = node.nodeName.replace(/^[^:]+:/, '');
|
|
const ElementType = Document.elementTypes[elementType];
|
|
if (typeof ElementType !== 'undefined') {
|
|
return new ElementType(this, node);
|
|
}
|
|
return new UnknownElement(this, node);
|
|
}
|
|
createTextNode(node) {
|
|
return new TextNode(this, node);
|
|
}
|
|
setViewBox(config) {
|
|
this.screen.setViewBox({
|
|
document: this,
|
|
...config
|
|
});
|
|
}
|
|
}
|
|
Document.createCanvas = createCanvas;
|
|
Document.createImage = createImage;
|
|
Document.elementTypes = elements;
|
|
|
|
/**
|
|
* SVG renderer on canvas.
|
|
*/
|
|
class Canvg {
|
|
/**
|
|
* Main constructor.
|
|
* @param ctx - Rendering context.
|
|
* @param svg - SVG Document.
|
|
* @param options - Rendering options.
|
|
*/
|
|
constructor(ctx, svg, options = {}) {
|
|
this.parser = new Parser(options);
|
|
this.screen = new Screen(ctx, options);
|
|
this.options = options;
|
|
const document = new Document(this, options);
|
|
const documentElement = document.createDocumentElement(svg);
|
|
this.document = document;
|
|
this.documentElement = documentElement;
|
|
}
|
|
/**
|
|
* Create Canvg instance from SVG source string or URL.
|
|
* @param ctx - Rendering context.
|
|
* @param svg - SVG source string or URL.
|
|
* @param options - Rendering options.
|
|
* @returns Canvg instance.
|
|
*/
|
|
static async from(ctx, svg, options = {}) {
|
|
const parser = new Parser(options);
|
|
const svgDocument = await parser.parse(svg);
|
|
return new Canvg(ctx, svgDocument, options);
|
|
}
|
|
/**
|
|
* Create Canvg instance from SVG source string.
|
|
* @param ctx - Rendering context.
|
|
* @param svg - SVG source string.
|
|
* @param options - Rendering options.
|
|
* @returns Canvg instance.
|
|
*/
|
|
static fromString(ctx, svg, options = {}) {
|
|
const parser = new Parser(options);
|
|
const svgDocument = parser.parseFromString(svg);
|
|
return new Canvg(ctx, svgDocument, options);
|
|
}
|
|
/**
|
|
* Create new Canvg instance with inherited options.
|
|
* @param ctx - Rendering context.
|
|
* @param svg - SVG source string or URL.
|
|
* @param options - Rendering options.
|
|
* @returns Canvg instance.
|
|
*/
|
|
fork(ctx, svg, options = {}) {
|
|
return Canvg.from(ctx, svg, {
|
|
...this.options,
|
|
...options
|
|
});
|
|
}
|
|
/**
|
|
* Create new Canvg instance with inherited options.
|
|
* @param ctx - Rendering context.
|
|
* @param svg - SVG source string.
|
|
* @param options - Rendering options.
|
|
* @returns Canvg instance.
|
|
*/
|
|
forkString(ctx, svg, options = {}) {
|
|
return Canvg.fromString(ctx, svg, {
|
|
...this.options,
|
|
...options
|
|
});
|
|
}
|
|
/**
|
|
* Document is ready promise.
|
|
* @returns Ready promise.
|
|
*/
|
|
ready() {
|
|
return this.screen.ready();
|
|
}
|
|
/**
|
|
* Document is ready value.
|
|
* @returns Is ready or not.
|
|
*/
|
|
isReady() {
|
|
return this.screen.isReady();
|
|
}
|
|
/**
|
|
* Render only first frame, ignoring animations and mouse.
|
|
* @param options - Rendering options.
|
|
*/
|
|
async render(options = {}) {
|
|
this.start({
|
|
enableRedraw: true,
|
|
ignoreAnimation: true,
|
|
ignoreMouse: true,
|
|
...options
|
|
});
|
|
await this.ready();
|
|
this.stop();
|
|
}
|
|
/**
|
|
* Start rendering.
|
|
* @param options - Render options.
|
|
*/
|
|
start(options = {}) {
|
|
const { documentElement, screen, options: baseOptions } = this;
|
|
screen.start(documentElement, {
|
|
enableRedraw: true,
|
|
...baseOptions,
|
|
...options
|
|
});
|
|
}
|
|
/**
|
|
* Stop rendering.
|
|
*/
|
|
stop() {
|
|
this.screen.stop();
|
|
}
|
|
/**
|
|
* Resize SVG to fit in given size.
|
|
* @param width
|
|
* @param height
|
|
* @param preserveAspectRatio
|
|
*/
|
|
resize(width, height = width, preserveAspectRatio = false) {
|
|
this.documentElement.resize(width, height, preserveAspectRatio);
|
|
}
|
|
}
|
|
|
|
export { AElement, AnimateColorElement, AnimateElement, AnimateTransformElement, BoundingBox, CB1, CB2, CB3, CB4, Canvg, CircleElement, ClipPathElement, DefsElement, DescElement, Document, Element, EllipseElement, FeColorMatrixElement, FeCompositeElement, FeDropShadowElement, FeGaussianBlurElement, FeMorphologyElement, FilterElement, Font, FontElement, FontFaceElement, GElement, GlyphElement, GradientElement, ImageElement, LineElement, LinearGradientElement, MarkerElement, MaskElement, Matrix, MissingGlyphElement, Mouse, PSEUDO_ZERO, Parser, PathElement, PathParser, PatternElement, Point, PolygonElement, PolylineElement, Property, QB1, QB2, QB3, RadialGradientElement, RectElement, RenderedElement, Rotate, SVGElement, SVGFontLoader, Scale, Screen, Skew, SkewX, SkewY, StopElement, StyleElement, SymbolElement, TRefElement, TSpanElement, TextElement, TextPathElement, TitleElement, Transform, Translate, UnknownElement, UseElement, ViewPort, compressSpaces, Canvg as default, getSelectorSpecificity, normalizeAttributeName, normalizeColor, parseExternalUrl, index as presets, toNumbers, trimLeft, trimRight, vectorMagnitude, vectorsAngle, vectorsRatio };
|
|
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