2993 lines
98 KiB
JavaScript
2993 lines
98 KiB
JavaScript
/* eslint-disable new-cap, class-methods-use-this */
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// Todo: Compare with latest canvg (add any improvements of ours) and add full JSDocs (denoting links to standard APIs and which are custom): https://github.com/canvg/canvg
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/**
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* canvg.js - Javascript SVG parser and renderer on Canvas
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* @module canvg
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* @license MIT
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* @author Gabe Lerner <gabelerner@gmail.com>
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* @see https://github.com/canvg/canvg
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*/
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import RGBColor from './rgbcolor.js';
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import {canvasRGBA} from '../external/stackblur-canvas/dist/stackblur-es.js';
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/**
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* Whether a value is `null` or `undefined`.
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* @param {Any} val
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* @returns {boolean}
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*/
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const isNullish = (val) => {
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return val === null || val === undefined;
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};
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/**
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* @callback module:canvg.ForceRedraw
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* @returns {boolean}
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*/
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/**
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* @typedef {PlainObject} module:canvg.CanvgOptions
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* @property {boolean} opts.ignoreMouse true => ignore mouse events
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* @property {boolean} opts.ignoreAnimation true => ignore animations
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* @property {boolean} opts.ignoreDimensions true => does not try to resize canvas
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* @property {boolean} opts.ignoreClear true => does not clear canvas
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* @property {Integer} opts.offsetX int => draws at a x offset
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* @property {Integer} opts.offsetY int => draws at a y offset
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* @property {Integer} opts.scaleWidth int => scales horizontally to width
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* @property {Integer} opts.scaleHeight int => scales vertically to height
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* @property {module:canvg.ForceRedraw} opts.forceRedraw function => will call the function on every frame, if it returns true, will redraw
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* @property {boolean} opts.log Adds log function
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* @property {boolean} opts.useCORS Whether to set CORS `crossOrigin` for the image to `Anonymous`
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*/
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/**
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* If called with no arguments, it will replace all `<svg>` elements on the page
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* with `<canvas>` elements.
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* @function module:canvg.canvg
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* @param {HTMLCanvasElement|string} target canvas element or the id of a canvas element
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* @param {string|XMLDocument} s - svg string, url to svg file, or xml document
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* @param {module:canvg.CanvgOptions} [opts] Optional hash of options
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* @returns {Promise} All the function after the first render is completed with dom
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*/
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export const canvg = function (target, s, opts) {
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// no parameters
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if (isNullish(target) && isNullish(s) && isNullish(opts)) {
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const svgTags = document.querySelectorAll('svg');
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return Promise.all([...svgTags].map((svgTag) => {
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const c = document.createElement('canvas');
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c.width = svgTag.clientWidth;
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c.height = svgTag.clientHeight;
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svgTag.before(c);
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svgTag.remove();
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const div = document.createElement('div');
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div.append(svgTag);
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return canvg(c, div.innerHTML);
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}));
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}
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if (typeof target === 'string') {
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target = document.getElementById(target);
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}
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// store class on canvas
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if (!isNullish(target.svg)) target.svg.stop();
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const svg = build(opts || {});
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// on i.e. 8 for flash canvas, we can't assign the property so check for it
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if (!(target.childNodes.length === 1 && target.childNodes[0].nodeName === 'OBJECT')) {
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target.svg = svg;
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}
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const ctx = target.getContext('2d');
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if (typeof s.documentElement !== 'undefined') {
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// load from xml doc
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return svg.loadXmlDoc(ctx, s);
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}
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if (s.substr(0, 1) === '<') {
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// load from xml string
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return svg.loadXml(ctx, s);
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}
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// load from url
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return svg.load(ctx, s);
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};
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/**
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* @param {module:canvg.CanvgOptions} opts
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* @returns {Object}
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* @todo Flesh out exactly what object is returned here (after updating to latest and reincluding our changes here and those of StackBlur)
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*/
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function build (opts) {
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const svg = {opts};
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svg.FRAMERATE = 30;
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svg.MAX_VIRTUAL_PIXELS = 30000;
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svg.log = function (msg) { /* */ };
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if (svg.opts.log === true && typeof console !== 'undefined') {
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svg.log = function (msg) { console.log(msg); }; // eslint-disable-line no-console
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}
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// globals
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svg.init = function (ctx) {
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let uniqueId = 0;
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svg.UniqueId = function () {
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uniqueId++;
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return 'canvg' + uniqueId;
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};
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svg.Definitions = {};
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svg.Styles = {};
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svg.Animations = [];
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svg.Images = [];
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svg.ctx = ctx;
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svg.ViewPort = {
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viewPorts: [],
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Clear () { this.viewPorts = []; },
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SetCurrent (width, height) { this.viewPorts.push({width, height}); },
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RemoveCurrent () { this.viewPorts.pop(); },
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Current () { return this.viewPorts[this.viewPorts.length - 1]; },
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width () { return this.Current().width; },
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height () { return this.Current().height; },
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ComputeSize (d) {
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if (!isNullish(d) && typeof d === 'number') return d;
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if (d === 'x') return this.width();
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if (d === 'y') return this.height();
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return Math.sqrt(
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(this.width() ** 2) + (this.height() ** 2)
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) / Math.sqrt(2);
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}
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};
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};
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svg.init();
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// images loaded
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svg.ImagesLoaded = function () {
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return svg.Images.every((img) => img.loaded);
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};
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// trim
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svg.trim = function (s) {
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return s.replace(/^\s+|\s+$/g, '');
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};
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// compress spaces
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svg.compressSpaces = function (s) {
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return s.replace(/[\s\r\t\n]+/gm, ' ');
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};
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// ajax
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// Todo: Replace with `fetch` and polyfill
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svg.ajax = function (url, asynch) {
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const AJAX = window.XMLHttpRequest
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? new XMLHttpRequest()
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: new window.ActiveXObject('Microsoft.XMLHTTP');
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if (asynch) {
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return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
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const req = AJAX.open('GET', url, true);
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req.addEventListener('load', () => {
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resolve(AJAX.responseText);
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});
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AJAX.send(null);
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});
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}
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AJAX.open('GET', url, false);
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AJAX.send(null);
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return AJAX.responseText;
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};
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// parse xml
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svg.parseXml = function (xml) {
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if (window.DOMParser) {
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const parser = new DOMParser();
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return parser.parseFromString(xml, 'text/xml');
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}
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xml = xml.replace(/<!DOCTYPE svg[^>]*>/, '');
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const xmlDoc = new window.ActiveXObject('Microsoft.XMLDOM');
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xmlDoc.async = 'false';
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xmlDoc.loadXML(xml);
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return xmlDoc;
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};
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// text extensions
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// get the text baseline
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const textBaselineMapping = {
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baseline: 'alphabetic',
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'before-edge': 'top',
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'text-before-edge': 'top',
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middle: 'middle',
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central: 'middle',
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'after-edge': 'bottom',
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'text-after-edge': 'bottom',
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ideographic: 'ideographic',
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alphabetic: 'alphabetic',
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hanging: 'hanging',
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mathematical: 'alphabetic'
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};
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svg.Property = class Property {
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constructor (name, value) {
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this.name = name;
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this.value = value;
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}
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getValue () {
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return this.value;
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}
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hasValue () {
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return (!isNullish(this.value) && this.value !== '');
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}
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// return the numerical value of the property
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numValue () {
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if (!this.hasValue()) return 0;
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let n = parseFloat(this.value);
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if (String(this.value).endsWith('%')) {
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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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valueOrDefault (def) {
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if (this.hasValue()) return this.value;
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return def;
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}
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numValueOrDefault (def) {
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if (this.hasValue()) return this.numValue();
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return def;
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}
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// color extensions
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// augment the current color value with the opacity
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addOpacity (opacityProp) {
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let newValue = this.value;
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if (!isNullish(opacityProp.value) && opacityProp.value !== '' && typeof this.value === 'string') { // can only add opacity to colors, not patterns
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const color = new RGBColor(this.value);
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if (color.ok) {
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newValue = 'rgba(' + color.r + ', ' + color.g + ', ' + color.b + ', ' + opacityProp.numValue() + ')';
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}
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}
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return new svg.Property(this.name, newValue);
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}
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// definition extensions
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// get the definition from the definitions table
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getDefinition () {
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let name = this.value.match(/#([^)'"]+)/);
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if (name) { name = name[1]; }
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if (!name) { name = this.value; }
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return svg.Definitions[name];
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}
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isUrlDefinition () {
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return this.value.startsWith('url(');
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}
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getFillStyleDefinition (e, opacityProp) {
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let def = this.getDefinition();
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// gradient
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if (!isNullish(def) && def.createGradient) {
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return def.createGradient(svg.ctx, e, opacityProp);
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}
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// pattern
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if (!isNullish(def) && def.createPattern) {
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if (def.getHrefAttribute().hasValue()) {
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const pt = def.attribute('patternTransform');
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def = def.getHrefAttribute().getDefinition();
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if (pt.hasValue()) { def.attribute('patternTransform', true).value = pt.value; }
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}
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return def.createPattern(svg.ctx, e);
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}
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return null;
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}
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// length extensions
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getDPI (viewPort) {
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return 96.0; // TODO: compute?
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}
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getEM (viewPort) {
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let em = 12;
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const fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
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if (fontSize.hasValue()) em = fontSize.toPixels(viewPort);
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return em;
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}
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getUnits () {
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return String(this.value).replace(/[0-9.-]/g, '');
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}
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// get the length as pixels
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toPixels (viewPort, processPercent) {
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if (!this.hasValue()) return 0;
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const s = String(this.value);
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if (s.endsWith('em')) return this.numValue() * this.getEM(viewPort);
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if (s.endsWith('ex')) return this.numValue() * this.getEM(viewPort) / 2.0;
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if (s.endsWith('px')) return this.numValue();
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if (s.endsWith('pt')) return this.numValue() * this.getDPI(viewPort) * (1.0 / 72.0);
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if (s.endsWith('pc')) return this.numValue() * 15;
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if (s.endsWith('cm')) return this.numValue() * this.getDPI(viewPort) / 2.54;
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if (s.endsWith('mm')) return this.numValue() * this.getDPI(viewPort) / 25.4;
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if (s.endsWith('in')) return this.numValue() * this.getDPI(viewPort);
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if (s.endsWith('%')) return this.numValue() * svg.ViewPort.ComputeSize(viewPort);
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const n = this.numValue();
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if (processPercent && n < 1.0) return n * svg.ViewPort.ComputeSize(viewPort);
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return n;
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}
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// time extensions
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// get the time as milliseconds
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toMilliseconds () {
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if (!this.hasValue()) return 0;
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const s = String(this.value);
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if (s.endsWith('ms')) return this.numValue();
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if (s.endsWith('s')) return this.numValue() * 1000;
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return this.numValue();
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}
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// angle extensions
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// get the angle as radians
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toRadians () {
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if (!this.hasValue()) return 0;
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const s = String(this.value);
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if (s.endsWith('deg')) return this.numValue() * (Math.PI / 180.0);
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if (s.endsWith('grad')) return this.numValue() * (Math.PI / 200.0);
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if (s.endsWith('rad')) return this.numValue();
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return this.numValue() * (Math.PI / 180.0);
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}
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toTextBaseline () {
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if (!this.hasValue()) return null;
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return textBaselineMapping[this.value];
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}
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};
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// fonts
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svg.Font = {
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Styles: 'normal|italic|oblique|inherit',
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Variants: 'normal|small-caps|inherit',
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Weights: 'normal|bold|bolder|lighter|100|200|300|400|500|600|700|800|900|inherit',
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CreateFont (fontStyle, fontVariant, fontWeight, fontSize, fontFamily, inherit) {
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const f = !isNullish(inherit) ? this.Parse(inherit) : this.CreateFont('', '', '', '', '', svg.ctx.font);
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return {
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fontFamily: fontFamily || f.fontFamily,
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fontSize: fontSize || f.fontSize,
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fontStyle: fontStyle || f.fontStyle,
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fontWeight: fontWeight || f.fontWeight,
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fontVariant: fontVariant || f.fontVariant,
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toString () {
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return [
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this.fontStyle, this.fontVariant, this.fontWeight,
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this.fontSize, this.fontFamily
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].join(' ');
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}
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};
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},
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Parse (s) {
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const f = {};
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const ds = svg.trim(svg.compressSpaces(s || '')).split(' ');
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const set = {
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fontSize: false, fontStyle: false, fontWeight: false, fontVariant: false
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};
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let ff = '';
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ds.forEach((d) => {
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if (!set.fontStyle && this.Styles.includes(d)) {
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if (d !== 'inherit') {
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f.fontStyle = d;
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}
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set.fontStyle = true;
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} else if (!set.fontVariant && this.Variants.includes(d)) {
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if (d !== 'inherit') {
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f.fontVariant = d;
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}
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set.fontStyle = set.fontVariant = true;
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} else if (!set.fontWeight && this.Weights.includes(d)) {
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if (d !== 'inherit') {
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f.fontWeight = d;
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}
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set.fontStyle = set.fontVariant = set.fontWeight = true;
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} else if (!set.fontSize) {
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if (d !== 'inherit') {
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f.fontSize = d.split('/')[0];
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}
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set.fontStyle = set.fontVariant = set.fontWeight = set.fontSize = true;
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} else if (d !== 'inherit') {
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ff += d;
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}
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});
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if (ff !== '') { f.fontFamily = ff; }
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return f;
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}
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};
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// points and paths
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svg.ToNumberArray = function (s) {
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const a = svg.trim(svg.compressSpaces((s || '').replace(/,/g, ' '))).split(' ');
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return a.map((_a) => parseFloat(_a));
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};
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svg.Point = class {
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constructor (x, y) {
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this.x = x;
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this.y = y;
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}
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angleTo (p) {
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return Math.atan2(p.y - this.y, p.x - this.x);
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}
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applyTransform (v) {
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const xp = this.x * v[0] + this.y * v[2] + v[4];
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const yp = this.x * v[1] + this.y * v[3] + v[5];
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this.x = xp;
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this.y = yp;
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}
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};
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svg.CreatePoint = function (s) {
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const a = svg.ToNumberArray(s);
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return new svg.Point(a[0], a[1]);
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};
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svg.CreatePath = function (s) {
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const a = svg.ToNumberArray(s);
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const path = [];
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for (let i = 0; i < a.length; i += 2) {
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path.push(new svg.Point(a[i], a[i + 1]));
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}
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return path;
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};
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// bounding box
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svg.BoundingBox = class {
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constructor (x1, y1, x2, y2) { // pass in initial points if you want
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this.x1 = Number.NaN;
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this.y1 = Number.NaN;
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this.x2 = Number.NaN;
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this.y2 = Number.NaN;
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this.addPoint(x1, y1);
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this.addPoint(x2, y2);
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}
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x () { return this.x1; }
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y () { return this.y1; }
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width () { return this.x2 - this.x1; }
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height () { return this.y2 - this.y1; }
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addPoint (x, y) {
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if (!isNullish(x)) {
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if (isNaN(this.x1) || isNaN(this.x2)) {
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this.x1 = x;
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this.x2 = x;
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}
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if (x < this.x1) this.x1 = x;
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if (x > this.x2) this.x2 = x;
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}
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if (!isNullish(y)) {
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if (isNaN(this.y1) || isNaN(this.y2)) {
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this.y1 = y;
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this.y2 = y;
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}
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if (y < this.y1) this.y1 = y;
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if (y > this.y2) this.y2 = y;
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}
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}
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addX (x) { this.addPoint(x, null); }
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addY (y) { this.addPoint(null, y); }
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addBoundingBox (bb) {
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this.addPoint(bb.x1, bb.y1);
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this.addPoint(bb.x2, bb.y2);
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}
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addQuadraticCurve (p0x, p0y, p1x, p1y, p2x, p2y) {
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const cp1x = p0x + 2 / 3 * (p1x - p0x); // CP1 = QP0 + 2/3 *(QP1-QP0)
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const cp1y = p0y + 2 / 3 * (p1y - p0y); // CP1 = QP0 + 2/3 *(QP1-QP0)
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const cp2x = cp1x + 1 / 3 * (p2x - p0x); // CP2 = CP1 + 1/3 *(QP2-QP0)
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const cp2y = cp1y + 1 / 3 * (p2y - p0y); // CP2 = CP1 + 1/3 *(QP2-QP0)
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this.addBezierCurve(p0x, p0y, cp1x, cp2x, cp1y, cp2y, p2x, p2y);
|
|
}
|
|
|
|
addBezierCurve (p0x, p0y, p1x, p1y, p2x, p2y, p3x, p3y) {
|
|
// from http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
|
|
const p0 = [p0x, p0y], p1 = [p1x, p1y], p2 = [p2x, p2y], p3 = [p3x, p3y];
|
|
this.addPoint(p0[0], p0[1]);
|
|
this.addPoint(p3[0], p3[1]);
|
|
|
|
for (let i = 0; i <= 1; i++) {
|
|
const f = function (t) {
|
|
return ((1 - t) ** 3) * p0[i] +
|
|
3 * ((1 - t) ** 2) * t * p1[i] +
|
|
3 * (1 - t) * (t ** 2) * p2[i] +
|
|
(t ** 3) * p3[i];
|
|
};
|
|
|
|
const b = 6 * p0[i] - 12 * p1[i] + 6 * p2[i];
|
|
const a = -3 * p0[i] + 9 * p1[i] - 9 * p2[i] + 3 * p3[i];
|
|
const c = 3 * p1[i] - 3 * p0[i];
|
|
|
|
if (a === 0) {
|
|
if (b === 0) continue;
|
|
const t = -c / b;
|
|
if (t > 0 && t < 1) {
|
|
if (i === 0) this.addX(f(t));
|
|
if (i === 1) this.addY(f(t));
|
|
}
|
|
continue;
|
|
}
|
|
|
|
const b2ac = (b ** 2) - 4 * c * a;
|
|
if (b2ac < 0) continue;
|
|
const t1 = (-b + Math.sqrt(b2ac)) / (2 * a);
|
|
if (t1 > 0 && t1 < 1) {
|
|
if (i === 0) this.addX(f(t1));
|
|
if (i === 1) this.addY(f(t1));
|
|
}
|
|
const t2 = (-b - Math.sqrt(b2ac)) / (2 * a);
|
|
if (t2 > 0 && t2 < 1) {
|
|
if (i === 0) this.addX(f(t2));
|
|
if (i === 1) this.addY(f(t2));
|
|
}
|
|
}
|
|
}
|
|
|
|
isPointInBox (x, y) {
|
|
return (this.x1 <= x && x <= this.x2 && this.y1 <= y && y <= this.y2);
|
|
}
|
|
};
|
|
|
|
// transforms
|
|
svg.Transform = class {
|
|
constructor (v) {
|
|
this.Type = {
|
|
translate: class {
|
|
constructor (s) {
|
|
this.p = svg.CreatePoint(s);
|
|
this.apply = function (ctx) {
|
|
ctx.translate(this.p.x || 0.0, this.p.y || 0.0);
|
|
};
|
|
this.unapply = function (ctx) {
|
|
ctx.translate(-1.0 * this.p.x || 0.0, -1.0 * this.p.y || 0.0);
|
|
};
|
|
this.applyToPoint = function (p) {
|
|
p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
|
|
};
|
|
}
|
|
},
|
|
rotate: class {
|
|
constructor (s) {
|
|
const a = svg.ToNumberArray(s);
|
|
this.angle = new svg.Property('angle', a[0]);
|
|
this.cx = a[1] || 0;
|
|
this.cy = a[2] || 0;
|
|
this.apply = function (ctx) {
|
|
ctx.translate(this.cx, this.cy);
|
|
ctx.rotate(this.angle.toRadians());
|
|
ctx.translate(-this.cx, -this.cy);
|
|
};
|
|
this.unapply = function (ctx) {
|
|
ctx.translate(this.cx, this.cy);
|
|
ctx.rotate(-1.0 * this.angle.toRadians());
|
|
ctx.translate(-this.cx, -this.cy);
|
|
};
|
|
this.applyToPoint = function (p) {
|
|
const _a = this.angle.toRadians();
|
|
p.applyTransform([1, 0, 0, 1, this.p.x || 0.0, this.p.y || 0.0]);
|
|
p.applyTransform([Math.cos(_a), Math.sin(_a), -Math.sin(_a), Math.cos(_a), 0, 0]);
|
|
p.applyTransform([1, 0, 0, 1, -this.p.x || 0.0, -this.p.y || 0.0]);
|
|
};
|
|
}
|
|
},
|
|
scale: class {
|
|
constructor (s) {
|
|
this.p = svg.CreatePoint(s);
|
|
this.apply = function (ctx) {
|
|
ctx.scale(this.p.x || 1.0, this.p.y || this.p.x || 1.0);
|
|
};
|
|
this.unapply = function (ctx) {
|
|
ctx.scale(1.0 / this.p.x || 1.0, 1.0 / this.p.y || this.p.x || 1.0);
|
|
};
|
|
this.applyToPoint = function (p) {
|
|
p.applyTransform([this.p.x || 0.0, 0, 0, this.p.y || 0.0, 0, 0]);
|
|
};
|
|
}
|
|
},
|
|
matrix: class {
|
|
constructor (s) {
|
|
this.m = svg.ToNumberArray(s);
|
|
this.apply = function (ctx) {
|
|
ctx.transform(this.m[0], this.m[1], this.m[2], this.m[3], this.m[4], this.m[5]);
|
|
};
|
|
this.applyToPoint = function (p) {
|
|
p.applyTransform(this.m);
|
|
};
|
|
}
|
|
}
|
|
};
|
|
Object.assign(this.Type, {
|
|
SkewBase: class extends this.Type.matrix {
|
|
constructor (s) {
|
|
super(s);
|
|
this.angle = new svg.Property('angle', s);
|
|
}
|
|
}
|
|
});
|
|
Object.assign(this.Type, {
|
|
skewX: class extends this.Type.SkewBase {
|
|
constructor (s) {
|
|
super(s);
|
|
this.m = [1, 0, Math.tan(this.angle.toRadians()), 1, 0, 0];
|
|
}
|
|
},
|
|
skewY: class extends this.Type.SkewBase {
|
|
constructor (s) {
|
|
super(s);
|
|
this.m = [1, Math.tan(this.angle.toRadians()), 0, 1, 0, 0];
|
|
}
|
|
}
|
|
});
|
|
|
|
const data = svg.trim(svg.compressSpaces(v)).replace(/\)([a-zA-Z])/g, ') $1').replace(/\)(\s?,\s?)/g, ') ').split(/\s(?=[a-z])/);
|
|
this.transforms = data.map((d) => {
|
|
const type = svg.trim(d.split('(')[0]);
|
|
const s = d.split('(')[1].replace(')', '');
|
|
const transform = new this.Type[type](s);
|
|
transform.type = type;
|
|
return transform;
|
|
});
|
|
}
|
|
|
|
apply (ctx) {
|
|
this.transforms.forEach((transform) => {
|
|
transform.apply(ctx);
|
|
});
|
|
}
|
|
|
|
unapply (ctx) {
|
|
for (let i = this.transforms.length - 1; i >= 0; i--) {
|
|
this.transforms[i].unapply(ctx);
|
|
}
|
|
}
|
|
|
|
applyToPoint (p) {
|
|
this.transforms.forEach((transform) => {
|
|
transform.applyToPoint(p);
|
|
});
|
|
}
|
|
};
|
|
|
|
// aspect ratio
|
|
svg.AspectRatio = function (ctx, aspectRatio, width, desiredWidth, height, desiredHeight, minX, minY, refX, refY) {
|
|
// aspect ratio - https://www.w3.org/TR/SVG/coords.html#PreserveAspectRatioAttribute
|
|
aspectRatio = svg.compressSpaces(aspectRatio);
|
|
aspectRatio = aspectRatio.replace(/^defer\s/, ''); // ignore defer
|
|
const align = aspectRatio.split(' ')[0] || 'xMidYMid';
|
|
const meetOrSlice = aspectRatio.split(' ')[1] || 'meet';
|
|
|
|
// calculate scale
|
|
const scaleX = width / desiredWidth;
|
|
const scaleY = height / desiredHeight;
|
|
const scaleMin = Math.min(scaleX, scaleY);
|
|
const scaleMax = Math.max(scaleX, scaleY);
|
|
if (meetOrSlice === 'meet') { desiredWidth *= scaleMin; desiredHeight *= scaleMin; }
|
|
if (meetOrSlice === 'slice') { desiredWidth *= scaleMax; desiredHeight *= scaleMax; }
|
|
|
|
refX = new svg.Property('refX', refX);
|
|
refY = new svg.Property('refY', refY);
|
|
if (refX.hasValue() && refY.hasValue()) {
|
|
ctx.translate(-scaleMin * refX.toPixels('x'), -scaleMin * refY.toPixels('y'));
|
|
} else {
|
|
// align
|
|
if (align.startsWith('xMid') && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width / 2.0 - desiredWidth / 2.0, 0);
|
|
if (align.endsWith('YMid') && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height / 2.0 - desiredHeight / 2.0);
|
|
if (align.startsWith('xMax') && ((meetOrSlice === 'meet' && scaleMin === scaleY) || (meetOrSlice === 'slice' && scaleMax === scaleY))) ctx.translate(width - desiredWidth, 0);
|
|
if (align.endsWith('YMax') && ((meetOrSlice === 'meet' && scaleMin === scaleX) || (meetOrSlice === 'slice' && scaleMax === scaleX))) ctx.translate(0, height - desiredHeight);
|
|
}
|
|
|
|
// scale
|
|
if (align === 'none') ctx.scale(scaleX, scaleY);
|
|
else if (meetOrSlice === 'meet') ctx.scale(scaleMin, scaleMin);
|
|
else if (meetOrSlice === 'slice') ctx.scale(scaleMax, scaleMax);
|
|
|
|
// translate
|
|
ctx.translate(isNullish(minX) ? 0 : -minX, isNullish(minY) ? 0 : -minY);
|
|
};
|
|
|
|
// elements
|
|
svg.Element = {};
|
|
|
|
svg.EmptyProperty = new svg.Property('EMPTY', '');
|
|
|
|
svg.Element.ElementBase = class {
|
|
constructor (node) {
|
|
// Argument from inheriting class
|
|
this.captureTextNodes = arguments[1]; // eslint-disable-line prefer-rest-params
|
|
this.attributes = {};
|
|
this.styles = {};
|
|
this.children = [];
|
|
if (!isNullish(node) && node.nodeType === 1) { // ELEMENT_NODE
|
|
// add children
|
|
[...node.childNodes].forEach((childNode) => {
|
|
if (childNode.nodeType === 1) {
|
|
this.addChild(childNode, true); // ELEMENT_NODE
|
|
}
|
|
if (this.captureTextNodes && (
|
|
childNode.nodeType === 3 || childNode.nodeType === 4
|
|
)) {
|
|
const text = childNode.nodeValue || childNode.text || '';
|
|
if (svg.trim(svg.compressSpaces(text)) !== '') {
|
|
this.addChild(new svg.Element.tspan(childNode), false); // TEXT_NODE
|
|
}
|
|
}
|
|
});
|
|
|
|
// add attributes
|
|
[...node.attributes].forEach(({nodeName, nodeValue}) => {
|
|
this.attributes[nodeName] = new svg.Property(
|
|
nodeName,
|
|
nodeValue
|
|
);
|
|
});
|
|
// add tag styles
|
|
let styles = svg.Styles[node.nodeName];
|
|
if (!isNullish(styles)) {
|
|
Object.entries(styles).forEach(([name, styleValue]) => {
|
|
this.styles[name] = styleValue;
|
|
});
|
|
}
|
|
|
|
// add class styles
|
|
if (this.attribute('class').hasValue()) {
|
|
const classes = svg.compressSpaces(this.attribute('class').value).split(' ');
|
|
classes.forEach((clss) => {
|
|
styles = svg.Styles['.' + clss];
|
|
if (!isNullish(styles)) {
|
|
Object.entries(styles).forEach(([name, styleValue]) => {
|
|
this.styles[name] = styleValue;
|
|
});
|
|
}
|
|
styles = svg.Styles[node.nodeName + '.' + clss];
|
|
if (!isNullish(styles)) {
|
|
Object.entries(styles).forEach(([name, styleValue]) => {
|
|
this.styles[name] = styleValue;
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
// add id styles
|
|
if (this.attribute('id').hasValue()) {
|
|
const _styles = svg.Styles['#' + this.attribute('id').value];
|
|
if (!isNullish(_styles)) {
|
|
Object.entries(_styles).forEach(([name, styleValue]) => {
|
|
this.styles[name] = styleValue;
|
|
});
|
|
}
|
|
}
|
|
|
|
// add inline styles
|
|
if (this.attribute('style').hasValue()) {
|
|
const _styles = this.attribute('style').value.split(';');
|
|
_styles.forEach((style) => {
|
|
if (svg.trim(style) !== '') {
|
|
let {name, value} = style.split(':');
|
|
name = svg.trim(name);
|
|
value = svg.trim(value);
|
|
this.styles[name] = new svg.Property(name, value);
|
|
}
|
|
});
|
|
}
|
|
|
|
// add id
|
|
if (this.attribute('id').hasValue()) {
|
|
if (isNullish(svg.Definitions[this.attribute('id').value])) {
|
|
svg.Definitions[this.attribute('id').value] = this;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// get or create attribute
|
|
attribute (name, createIfNotExists) {
|
|
let a = this.attributes[name];
|
|
if (!isNullish(a)) return a;
|
|
|
|
if (createIfNotExists === true) { a = new svg.Property(name, ''); this.attributes[name] = a; }
|
|
return a || svg.EmptyProperty;
|
|
}
|
|
|
|
getHrefAttribute () {
|
|
for (const a in this.attributes) {
|
|
if (a.endsWith(':href')) {
|
|
return this.attributes[a];
|
|
}
|
|
}
|
|
return svg.EmptyProperty;
|
|
}
|
|
|
|
// get or create style, crawls up node tree
|
|
style (name, createIfNotExists, skipAncestors) {
|
|
let s = this.styles[name];
|
|
if (!isNullish(s)) return s;
|
|
|
|
const a = this.attribute(name);
|
|
if (!isNullish(a) && a.hasValue()) {
|
|
this.styles[name] = a; // move up to me to cache
|
|
return a;
|
|
}
|
|
|
|
if (skipAncestors !== true) {
|
|
const p = this.parent;
|
|
if (!isNullish(p)) {
|
|
const ps = p.style(name);
|
|
if (!isNullish(ps) && ps.hasValue()) {
|
|
return ps;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (createIfNotExists === true) { s = new svg.Property(name, ''); this.styles[name] = s; }
|
|
return s || svg.EmptyProperty;
|
|
}
|
|
|
|
// base render
|
|
render (ctx) {
|
|
// don't render display=none
|
|
if (this.style('display').value === 'none') return;
|
|
|
|
// don't render visibility=hidden
|
|
if (this.style('visibility').value === 'hidden') return;
|
|
|
|
ctx.save();
|
|
if (this.attribute('mask').hasValue()) { // mask
|
|
const mask = this.attribute('mask').getDefinition();
|
|
if (!isNullish(mask)) mask.apply(ctx, this);
|
|
} else if (this.style('filter').hasValue()) { // filter
|
|
const filter = this.style('filter').getDefinition();
|
|
if (!isNullish(filter)) filter.apply(ctx, this);
|
|
} else {
|
|
this.setContext(ctx);
|
|
this.renderChildren(ctx);
|
|
this.clearContext(ctx);
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
// base set context
|
|
setContext (ctx) {
|
|
// OVERRIDE ME!
|
|
}
|
|
|
|
// base clear context
|
|
clearContext (ctx) {
|
|
// OVERRIDE ME!
|
|
}
|
|
|
|
// base render children
|
|
renderChildren (ctx) {
|
|
this.children.forEach((child) => {
|
|
child.render(ctx);
|
|
});
|
|
}
|
|
|
|
addChild (childNode, create) {
|
|
const child = create
|
|
? svg.CreateElement(childNode)
|
|
: childNode;
|
|
child.parent = this;
|
|
if (child.type !== 'title') { this.children.push(child); }
|
|
}
|
|
};
|
|
|
|
svg.Element.RenderedElementBase = class extends svg.Element.ElementBase {
|
|
setContext (ctx) {
|
|
// fill
|
|
if (this.style('fill').isUrlDefinition()) {
|
|
const fs = this.style('fill').getFillStyleDefinition(this, this.style('fill-opacity'));
|
|
if (!isNullish(fs)) ctx.fillStyle = fs;
|
|
} else if (this.style('fill').hasValue()) {
|
|
const fillStyle = this.style('fill');
|
|
if (fillStyle.value === 'currentColor') fillStyle.value = this.style('color').value;
|
|
ctx.fillStyle = (fillStyle.value === 'none' ? 'rgba(0,0,0,0)' : fillStyle.value);
|
|
}
|
|
if (this.style('fill-opacity').hasValue()) {
|
|
let fillStyle = new svg.Property('fill', ctx.fillStyle);
|
|
fillStyle = fillStyle.addOpacity(this.style('fill-opacity'));
|
|
ctx.fillStyle = fillStyle.value;
|
|
}
|
|
|
|
// stroke
|
|
if (this.style('stroke').isUrlDefinition()) {
|
|
const fs = this.style('stroke').getFillStyleDefinition(this, this.style('stroke-opacity'));
|
|
if (!isNullish(fs)) ctx.strokeStyle = fs;
|
|
} else if (this.style('stroke').hasValue()) {
|
|
const strokeStyle = this.style('stroke');
|
|
if (strokeStyle.value === 'currentColor') strokeStyle.value = this.style('color').value;
|
|
ctx.strokeStyle = (strokeStyle.value === 'none' ? 'rgba(0,0,0,0)' : strokeStyle.value);
|
|
}
|
|
if (this.style('stroke-opacity').hasValue()) {
|
|
let strokeStyle = new svg.Property('stroke', ctx.strokeStyle);
|
|
strokeStyle = strokeStyle.addOpacity(this.style('stroke-opacity'));
|
|
ctx.strokeStyle = strokeStyle.value;
|
|
}
|
|
if (this.style('stroke-width').hasValue()) {
|
|
const newLineWidth = this.style('stroke-width').toPixels();
|
|
ctx.lineWidth = newLineWidth === 0 ? 0.001 : newLineWidth; // browsers don't respect 0
|
|
}
|
|
if (this.style('stroke-linecap').hasValue()) ctx.lineCap = this.style('stroke-linecap').value;
|
|
if (this.style('stroke-linejoin').hasValue()) ctx.lineJoin = this.style('stroke-linejoin').value;
|
|
if (this.style('stroke-miterlimit').hasValue()) ctx.miterLimit = this.style('stroke-miterlimit').value;
|
|
if (this.style('stroke-dasharray').hasValue() && this.style('stroke-dasharray').value !== 'none') {
|
|
const gaps = svg.ToNumberArray(this.style('stroke-dasharray').value);
|
|
if (typeof ctx.setLineDash !== 'undefined') {
|
|
ctx.setLineDash(gaps);
|
|
} else if (typeof ctx.webkitLineDash !== 'undefined') {
|
|
ctx.webkitLineDash = gaps;
|
|
} else if (typeof ctx.mozDash !== 'undefined' && !(gaps.length === 1 && gaps[0] === 0)) {
|
|
ctx.mozDash = gaps;
|
|
}
|
|
|
|
const offset = this.style('stroke-dashoffset').numValueOrDefault(1);
|
|
if (typeof ctx.lineDashOffset !== 'undefined') {
|
|
ctx.lineDashOffset = offset;
|
|
} else if (typeof ctx.webkitLineDashOffset !== 'undefined') {
|
|
ctx.webkitLineDashOffset = offset;
|
|
} else if (typeof ctx.mozDashOffset !== 'undefined') {
|
|
ctx.mozDashOffset = offset;
|
|
}
|
|
}
|
|
|
|
// font
|
|
if (typeof ctx.font !== 'undefined') {
|
|
ctx.font = svg.Font.CreateFont(
|
|
this.style('font-style').value,
|
|
this.style('font-variant').value,
|
|
this.style('font-weight').value,
|
|
this.style('font-size').hasValue() ? this.style('font-size').toPixels() + 'px' : '',
|
|
this.style('font-family').value
|
|
).toString();
|
|
}
|
|
|
|
// transform
|
|
if (this.attribute('transform').hasValue()) {
|
|
const transform = new svg.Transform(this.attribute('transform').value);
|
|
transform.apply(ctx);
|
|
}
|
|
|
|
// clip
|
|
if (this.style('clip-path', false, true).hasValue()) {
|
|
const clip = this.style('clip-path', false, true).getDefinition();
|
|
if (!isNullish(clip)) clip.apply(ctx);
|
|
}
|
|
|
|
// opacity
|
|
if (this.style('opacity').hasValue()) {
|
|
ctx.globalAlpha = this.style('opacity').numValue();
|
|
}
|
|
}
|
|
};
|
|
|
|
svg.Element.PathElementBase = class extends svg.Element.RenderedElementBase {
|
|
path (ctx) {
|
|
if (!isNullish(ctx)) ctx.beginPath();
|
|
return new svg.BoundingBox();
|
|
}
|
|
|
|
renderChildren (ctx) {
|
|
this.path(ctx);
|
|
svg.Mouse.checkPath(this, ctx);
|
|
if (ctx.fillStyle !== '') {
|
|
if (this.style('fill-rule').valueOrDefault('inherit') !== 'inherit') {
|
|
ctx.fill(this.style('fill-rule').value);
|
|
} else {
|
|
ctx.fill();
|
|
}
|
|
}
|
|
if (ctx.strokeStyle !== '') ctx.stroke();
|
|
|
|
const markers = this.getMarkers();
|
|
if (!isNullish(markers)) {
|
|
if (this.style('marker-start').isUrlDefinition()) {
|
|
const marker = this.style('marker-start').getDefinition();
|
|
marker.render(ctx, markers[0][0], markers[0][1]);
|
|
}
|
|
if (this.style('marker-mid').isUrlDefinition()) {
|
|
const marker = this.style('marker-mid').getDefinition();
|
|
for (let i = 1; i < markers.length - 1; i++) {
|
|
marker.render(ctx, markers[i][0], markers[i][1]);
|
|
}
|
|
}
|
|
if (this.style('marker-end').isUrlDefinition()) {
|
|
const marker = this.style('marker-end').getDefinition();
|
|
marker.render(ctx, markers[markers.length - 1][0], markers[markers.length - 1][1]);
|
|
}
|
|
}
|
|
}
|
|
|
|
getBoundingBox () {
|
|
return this.path();
|
|
}
|
|
|
|
getMarkers () {
|
|
return null;
|
|
}
|
|
};
|
|
|
|
// svg element
|
|
svg.Element.svg = class extends svg.Element.RenderedElementBase {
|
|
clearContext (ctx) {
|
|
super.clearContext(ctx);
|
|
svg.ViewPort.RemoveCurrent();
|
|
}
|
|
|
|
setContext (ctx) {
|
|
// initial values and defaults
|
|
ctx.strokeStyle = 'rgba(0,0,0,0)';
|
|
ctx.lineCap = 'butt';
|
|
ctx.lineJoin = 'miter';
|
|
ctx.miterLimit = 4;
|
|
if (typeof ctx.font !== 'undefined' && typeof window.getComputedStyle !== 'undefined') {
|
|
ctx.font = window.getComputedStyle(ctx.canvas).getPropertyValue('font');
|
|
}
|
|
|
|
super.setContext(ctx);
|
|
|
|
// create new view port
|
|
if (!this.attribute('x').hasValue()) this.attribute('x', true).value = 0;
|
|
if (!this.attribute('y').hasValue()) this.attribute('y', true).value = 0;
|
|
ctx.translate(this.attribute('x').toPixels('x'), this.attribute('y').toPixels('y'));
|
|
|
|
let width = svg.ViewPort.width();
|
|
let height = svg.ViewPort.height();
|
|
|
|
if (!this.attribute('width').hasValue()) this.attribute('width', true).value = '100%';
|
|
if (!this.attribute('height').hasValue()) this.attribute('height', true).value = '100%';
|
|
if (typeof this.root === 'undefined') {
|
|
width = this.attribute('width').toPixels('x');
|
|
height = this.attribute('height').toPixels('y');
|
|
|
|
let x = 0;
|
|
let y = 0;
|
|
if (this.attribute('refX').hasValue() && this.attribute('refY').hasValue()) {
|
|
x = -this.attribute('refX').toPixels('x');
|
|
y = -this.attribute('refY').toPixels('y');
|
|
}
|
|
|
|
if (this.attribute('overflow').valueOrDefault('hidden') !== 'visible') {
|
|
ctx.beginPath();
|
|
ctx.moveTo(x, y);
|
|
ctx.lineTo(width, y);
|
|
ctx.lineTo(width, height);
|
|
ctx.lineTo(x, height);
|
|
ctx.closePath();
|
|
ctx.clip();
|
|
}
|
|
}
|
|
svg.ViewPort.SetCurrent(width, height);
|
|
|
|
// viewbox
|
|
if (this.attribute('viewBox').hasValue()) {
|
|
const viewBox = svg.ToNumberArray(this.attribute('viewBox').value);
|
|
const minX = viewBox[0];
|
|
const minY = viewBox[1];
|
|
width = viewBox[2];
|
|
height = viewBox[3];
|
|
|
|
svg.AspectRatio(
|
|
ctx,
|
|
this.attribute('preserveAspectRatio').value,
|
|
svg.ViewPort.width(),
|
|
width,
|
|
svg.ViewPort.height(),
|
|
height,
|
|
minX,
|
|
minY,
|
|
this.attribute('refX').value,
|
|
this.attribute('refY').value
|
|
);
|
|
|
|
svg.ViewPort.RemoveCurrent();
|
|
svg.ViewPort.SetCurrent(viewBox[2], viewBox[3]);
|
|
}
|
|
}
|
|
};
|
|
|
|
// rect element
|
|
svg.Element.rect = class extends svg.Element.PathElementBase {
|
|
path (ctx) {
|
|
const x = this.attribute('x').toPixels('x');
|
|
const y = this.attribute('y').toPixels('y');
|
|
const width = this.attribute('width').toPixels('x');
|
|
const height = this.attribute('height').toPixels('y');
|
|
let rx = this.attribute('rx').toPixels('x');
|
|
let ry = this.attribute('ry').toPixels('y');
|
|
if (this.attribute('rx').hasValue() && !this.attribute('ry').hasValue()) ry = rx;
|
|
if (this.attribute('ry').hasValue() && !this.attribute('rx').hasValue()) rx = ry;
|
|
rx = Math.min(rx, width / 2.0);
|
|
ry = Math.min(ry, height / 2.0);
|
|
if (!isNullish(ctx)) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(x + rx, y);
|
|
ctx.lineTo(x + width - rx, y);
|
|
ctx.quadraticCurveTo(x + width, y, x + width, y + ry);
|
|
ctx.lineTo(x + width, y + height - ry);
|
|
ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height);
|
|
ctx.lineTo(x + rx, y + height);
|
|
ctx.quadraticCurveTo(x, y + height, x, y + height - ry);
|
|
ctx.lineTo(x, y + ry);
|
|
ctx.quadraticCurveTo(x, y, x + rx, y);
|
|
ctx.closePath();
|
|
}
|
|
|
|
return new svg.BoundingBox(x, y, x + width, y + height);
|
|
}
|
|
};
|
|
|
|
// circle element
|
|
svg.Element.circle = class extends svg.Element.PathElementBase {
|
|
path (ctx) {
|
|
const cx = this.attribute('cx').toPixels('x');
|
|
const cy = this.attribute('cy').toPixels('y');
|
|
const r = this.attribute('r').toPixels();
|
|
|
|
if (!isNullish(ctx)) {
|
|
ctx.beginPath();
|
|
ctx.arc(cx, cy, r, 0, Math.PI * 2, true);
|
|
ctx.closePath();
|
|
}
|
|
|
|
return new svg.BoundingBox(cx - r, cy - r, cx + r, cy + r);
|
|
}
|
|
};
|
|
|
|
// ellipse element
|
|
const KAPPA = 4 * ((Math.sqrt(2) - 1) / 3);
|
|
svg.Element.ellipse = class extends svg.Element.PathElementBase {
|
|
path (ctx) {
|
|
const rx = this.attribute('rx').toPixels('x');
|
|
const ry = this.attribute('ry').toPixels('y');
|
|
const cx = this.attribute('cx').toPixels('x');
|
|
const cy = this.attribute('cy').toPixels('y');
|
|
|
|
if (!isNullish(ctx)) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(cx, cy - ry);
|
|
ctx.bezierCurveTo(cx + (KAPPA * rx), cy - ry, cx + rx, cy - (KAPPA * ry), cx + rx, cy);
|
|
ctx.bezierCurveTo(cx + rx, cy + (KAPPA * ry), cx + (KAPPA * rx), cy + ry, cx, cy + ry);
|
|
ctx.bezierCurveTo(cx - (KAPPA * rx), cy + ry, cx - rx, cy + (KAPPA * ry), cx - rx, cy);
|
|
ctx.bezierCurveTo(cx - rx, cy - (KAPPA * ry), cx - (KAPPA * rx), cy - ry, cx, cy - ry);
|
|
ctx.closePath();
|
|
}
|
|
|
|
return new svg.BoundingBox(cx - rx, cy - ry, cx + rx, cy + ry);
|
|
}
|
|
};
|
|
|
|
// line element
|
|
svg.Element.line = class extends svg.Element.PathElementBase {
|
|
getPoints () {
|
|
return [
|
|
new svg.Point(this.attribute('x1').toPixels('x'), this.attribute('y1').toPixels('y')),
|
|
new svg.Point(this.attribute('x2').toPixels('x'), this.attribute('y2').toPixels('y'))
|
|
];
|
|
}
|
|
|
|
path (ctx) {
|
|
const points = this.getPoints();
|
|
|
|
if (!isNullish(ctx)) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(points[0].x, points[0].y);
|
|
ctx.lineTo(points[1].x, points[1].y);
|
|
}
|
|
|
|
return new svg.BoundingBox(points[0].x, points[0].y, points[1].x, points[1].y);
|
|
}
|
|
|
|
getMarkers () {
|
|
const points = this.getPoints();
|
|
const a = points[0].angleTo(points[1]);
|
|
return [[points[0], a], [points[1], a]];
|
|
}
|
|
};
|
|
|
|
// polyline element
|
|
svg.Element.polyline = class extends svg.Element.PathElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.points = svg.CreatePath(this.attribute('points').value);
|
|
}
|
|
path (ctx) {
|
|
const {x, y} = this.points[0];
|
|
const bb = new svg.BoundingBox(x, y);
|
|
if (!isNullish(ctx)) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(x, y);
|
|
}
|
|
for (let i = 1; i < this.points.length; i++) {
|
|
const {x: _x, y: _y} = this.points[i];
|
|
bb.addPoint(_x, _y);
|
|
if (!isNullish(ctx)) ctx.lineTo(_x, _y);
|
|
}
|
|
return bb;
|
|
}
|
|
|
|
getMarkers () {
|
|
const markers = [];
|
|
for (let i = 0; i < this.points.length - 1; i++) {
|
|
markers.push([this.points[i], this.points[i].angleTo(this.points[i + 1])]);
|
|
}
|
|
markers.push([this.points[this.points.length - 1], markers[markers.length - 1][1]]);
|
|
return markers;
|
|
}
|
|
};
|
|
|
|
// polygon element
|
|
svg.Element.polygon = class extends svg.Element.polyline {
|
|
path (ctx) {
|
|
const bb = super.path(ctx);
|
|
if (!isNullish(ctx)) {
|
|
ctx.lineTo(this.points[0].x, this.points[0].y);
|
|
ctx.closePath();
|
|
}
|
|
return bb;
|
|
}
|
|
};
|
|
|
|
// path element
|
|
svg.Element.path = class extends svg.Element.PathElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
let d = this.attribute('d').value
|
|
// TODO: convert to real lexer based on https://www.w3.org/TR/SVG11/paths.html#PathDataBNF
|
|
.replace(/,/gm, ' ') // get rid of all commas
|
|
.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from commands
|
|
.replace(/([MmZzLlHhVvCcSsQqTtAa])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from commands
|
|
.replace(/([MmZzLlHhVvCcSsQqTtAa])([^\s])/gm, '$1 $2') // separate commands from points
|
|
.replace(/([^\s])([MmZzLlHhVvCcSsQqTtAa])/gm, '$1 $2') // separate commands from points
|
|
.replace(/(\d)([+-])/gm, '$1 $2') // separate digits when no comma
|
|
.replace(/(\.\d*)(\.)/gm, '$1 $2') // separate digits when no comma
|
|
.replace(/([Aa](\s+\d+)(\s+\d+)(\s+\d+))\s+([01])\s*([01])/gm, '$1 $5 $6 '); // shorthand elliptical arc path syntax
|
|
d = svg.compressSpaces(d); // compress multiple spaces
|
|
d = svg.trim(d);
|
|
this.PathParser = {
|
|
tokens: d.split(' '),
|
|
|
|
reset () {
|
|
this.i = -1;
|
|
this.command = '';
|
|
this.previousCommand = '';
|
|
this.start = new svg.Point(0, 0);
|
|
this.control = new svg.Point(0, 0);
|
|
this.current = new svg.Point(0, 0);
|
|
this.points = [];
|
|
this.angles = [];
|
|
},
|
|
|
|
isEnd () {
|
|
return this.i >= this.tokens.length - 1;
|
|
},
|
|
|
|
isCommandOrEnd () {
|
|
if (this.isEnd()) return true;
|
|
return !isNullish(this.tokens[this.i + 1].match(/^[A-Za-z]$/));
|
|
},
|
|
|
|
isRelativeCommand () {
|
|
switch (this.command) {
|
|
case 'm':
|
|
case 'l':
|
|
case 'h':
|
|
case 'v':
|
|
case 'c':
|
|
case 's':
|
|
case 'q':
|
|
case 't':
|
|
case 'a':
|
|
case 'z':
|
|
return true;
|
|
}
|
|
return false;
|
|
},
|
|
|
|
getToken () {
|
|
this.i++;
|
|
return this.tokens[this.i];
|
|
},
|
|
|
|
getScalar () {
|
|
return parseFloat(this.getToken());
|
|
},
|
|
|
|
nextCommand () {
|
|
this.previousCommand = this.command;
|
|
this.command = this.getToken();
|
|
},
|
|
|
|
getPoint () {
|
|
const p = new svg.Point(this.getScalar(), this.getScalar());
|
|
return this.makeAbsolute(p);
|
|
},
|
|
|
|
getAsControlPoint () {
|
|
const p = this.getPoint();
|
|
this.control = p;
|
|
return p;
|
|
},
|
|
|
|
getAsCurrentPoint () {
|
|
const p = this.getPoint();
|
|
this.current = p;
|
|
return p;
|
|
},
|
|
|
|
getReflectedControlPoint () {
|
|
if (this.previousCommand.toLowerCase() !== 'c' &&
|
|
this.previousCommand.toLowerCase() !== 's' &&
|
|
this.previousCommand.toLowerCase() !== 'q' &&
|
|
this.previousCommand.toLowerCase() !== 't') {
|
|
return this.current;
|
|
}
|
|
|
|
// reflect point
|
|
const p = new svg.Point(2 * this.current.x - this.control.x, 2 * this.current.y - this.control.y);
|
|
return p;
|
|
},
|
|
|
|
makeAbsolute (p) {
|
|
if (this.isRelativeCommand()) {
|
|
p.x += this.current.x;
|
|
p.y += this.current.y;
|
|
}
|
|
return p;
|
|
},
|
|
|
|
addMarker (p, from, priorTo) {
|
|
// if the last angle isn't filled in because we didn't have this point yet ...
|
|
if (!isNullish(priorTo) && this.angles.length > 0 && isNullish(this.angles[this.angles.length - 1])) {
|
|
this.angles[this.angles.length - 1] = this.points[this.points.length - 1].angleTo(priorTo);
|
|
}
|
|
this.addMarkerAngle(p, isNullish(from) ? null : from.angleTo(p));
|
|
},
|
|
|
|
addMarkerAngle (p, a) {
|
|
this.points.push(p);
|
|
this.angles.push(a);
|
|
},
|
|
|
|
getMarkerPoints () { return this.points; },
|
|
getMarkerAngles () {
|
|
for (let i = 0; i < this.angles.length; i++) {
|
|
if (isNullish(this.angles[i])) {
|
|
for (let j = i + 1; j < this.angles.length; j++) {
|
|
if (!isNullish(this.angles[j])) {
|
|
this.angles[i] = this.angles[j];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return this.angles;
|
|
}
|
|
};
|
|
}
|
|
|
|
path (ctx) {
|
|
const pp = this.PathParser;
|
|
pp.reset();
|
|
|
|
const bb = new svg.BoundingBox();
|
|
if (!isNullish(ctx)) ctx.beginPath();
|
|
while (!pp.isEnd()) {
|
|
pp.nextCommand();
|
|
switch (pp.command) {
|
|
case 'M':
|
|
case 'm': {
|
|
const p = pp.getAsCurrentPoint();
|
|
pp.addMarker(p);
|
|
bb.addPoint(p.x, p.y);
|
|
if (!isNullish(ctx)) ctx.moveTo(p.x, p.y);
|
|
pp.start = pp.current;
|
|
while (!pp.isCommandOrEnd()) {
|
|
const _p = pp.getAsCurrentPoint();
|
|
pp.addMarker(_p, pp.start);
|
|
bb.addPoint(_p.x, _p.y);
|
|
if (!isNullish(ctx)) ctx.lineTo(_p.x, _p.y);
|
|
}
|
|
break;
|
|
} case 'L':
|
|
case 'l':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const c = pp.current;
|
|
const p = pp.getAsCurrentPoint();
|
|
pp.addMarker(p, c);
|
|
bb.addPoint(p.x, p.y);
|
|
if (!isNullish(ctx)) ctx.lineTo(p.x, p.y);
|
|
}
|
|
break;
|
|
case 'H':
|
|
case 'h':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const newP = new svg.Point((pp.isRelativeCommand() ? pp.current.x : 0) + pp.getScalar(), pp.current.y);
|
|
pp.addMarker(newP, pp.current);
|
|
pp.current = newP;
|
|
bb.addPoint(pp.current.x, pp.current.y);
|
|
if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
|
|
}
|
|
break;
|
|
case 'V':
|
|
case 'v':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const newP = new svg.Point(pp.current.x, (pp.isRelativeCommand() ? pp.current.y : 0) + pp.getScalar());
|
|
pp.addMarker(newP, pp.current);
|
|
pp.current = newP;
|
|
bb.addPoint(pp.current.x, pp.current.y);
|
|
if (!isNullish(ctx)) ctx.lineTo(pp.current.x, pp.current.y);
|
|
}
|
|
break;
|
|
case 'C':
|
|
case 'c':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const curr = pp.current;
|
|
const p1 = pp.getPoint();
|
|
const cntrl = pp.getAsControlPoint();
|
|
const cp = pp.getAsCurrentPoint();
|
|
pp.addMarker(cp, cntrl, p1);
|
|
bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
}
|
|
break;
|
|
case 'S':
|
|
case 's':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const curr = pp.current;
|
|
const p1 = pp.getReflectedControlPoint();
|
|
const cntrl = pp.getAsControlPoint();
|
|
const cp = pp.getAsCurrentPoint();
|
|
pp.addMarker(cp, cntrl, p1);
|
|
bb.addBezierCurve(curr.x, curr.y, p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
if (!isNullish(ctx)) ctx.bezierCurveTo(p1.x, p1.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
}
|
|
break;
|
|
case 'Q':
|
|
case 'q':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const curr = pp.current;
|
|
const cntrl = pp.getAsControlPoint();
|
|
const cp = pp.getAsCurrentPoint();
|
|
pp.addMarker(cp, cntrl, cntrl);
|
|
bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
if (!isNullish(ctx)) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
|
|
}
|
|
break;
|
|
case 'T':
|
|
case 't':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const curr = pp.current;
|
|
const cntrl = pp.getReflectedControlPoint();
|
|
pp.control = cntrl;
|
|
const cp = pp.getAsCurrentPoint();
|
|
pp.addMarker(cp, cntrl, cntrl);
|
|
bb.addQuadraticCurve(curr.x, curr.y, cntrl.x, cntrl.y, cp.x, cp.y);
|
|
if (!isNullish(ctx)) ctx.quadraticCurveTo(cntrl.x, cntrl.y, cp.x, cp.y);
|
|
}
|
|
break;
|
|
case 'A':
|
|
case 'a':
|
|
while (!pp.isCommandOrEnd()) {
|
|
const curr = pp.current;
|
|
let rx = pp.getScalar();
|
|
let ry = pp.getScalar();
|
|
const xAxisRotation = pp.getScalar() * (Math.PI / 180.0);
|
|
const largeArcFlag = pp.getScalar();
|
|
const sweepFlag = pp.getScalar();
|
|
const cp = pp.getAsCurrentPoint();
|
|
|
|
// Conversion from endpoint to center parameterization
|
|
// https://www.w3.org/TR/SVG11/implnote.html#ArcConversionEndpointToCenter
|
|
|
|
// x1', y1'
|
|
const currp = new svg.Point(
|
|
Math.cos(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.sin(xAxisRotation) * (curr.y - cp.y) / 2.0,
|
|
-Math.sin(xAxisRotation) * (curr.x - cp.x) / 2.0 + Math.cos(xAxisRotation) * (curr.y - cp.y) / 2.0
|
|
);
|
|
// adjust radii
|
|
const l = (currp.x ** 2) / (rx ** 2) + (currp.y ** 2) / (ry ** 2);
|
|
if (l > 1) {
|
|
rx *= Math.sqrt(l);
|
|
ry *= Math.sqrt(l);
|
|
}
|
|
// cx', cy'
|
|
let s = (largeArcFlag === sweepFlag ? -1 : 1) * Math.sqrt(
|
|
(((rx ** 2) * (ry ** 2)) - ((rx ** 2) * (currp.y ** 2)) - ((ry ** 2) * (currp.x ** 2))) /
|
|
((rx ** 2) * (currp.y ** 2) + (ry ** 2) * (currp.x ** 2))
|
|
);
|
|
if (isNaN(s)) s = 0;
|
|
const cpp = new svg.Point(s * rx * currp.y / ry, s * -ry * currp.x / rx);
|
|
// cx, cy
|
|
const centp = new svg.Point(
|
|
(curr.x + cp.x) / 2.0 + Math.cos(xAxisRotation) * cpp.x - Math.sin(xAxisRotation) * cpp.y,
|
|
(curr.y + cp.y) / 2.0 + Math.sin(xAxisRotation) * cpp.x + Math.cos(xAxisRotation) * cpp.y
|
|
);
|
|
// vector magnitude
|
|
const m = function (v) {
|
|
return Math.sqrt((v[0] ** 2) + (v[1] ** 2));
|
|
};
|
|
// ratio between two vectors
|
|
const r = function (u, v) {
|
|
return (u[0] * v[0] + u[1] * v[1]) / (m(u) * m(v));
|
|
};
|
|
// angle between two vectors
|
|
const a = function (u, v) {
|
|
return (u[0] * v[1] < u[1] * v[0] ? -1 : 1) * Math.acos(r(u, v));
|
|
};
|
|
// initial angle
|
|
const a1 = a([1, 0], [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry]);
|
|
// angle delta
|
|
const u = [(currp.x - cpp.x) / rx, (currp.y - cpp.y) / ry];
|
|
const v = [(-currp.x - cpp.x) / rx, (-currp.y - cpp.y) / ry];
|
|
let ad = a(u, v);
|
|
if (r(u, v) <= -1) ad = Math.PI;
|
|
if (r(u, v) >= 1) ad = 0;
|
|
|
|
// for markers
|
|
const dir = 1 - sweepFlag ? 1.0 : -1.0;
|
|
const ah = a1 + dir * (ad / 2.0);
|
|
const halfWay = new svg.Point(
|
|
centp.x + rx * Math.cos(ah),
|
|
centp.y + ry * Math.sin(ah)
|
|
);
|
|
pp.addMarkerAngle(halfWay, ah - dir * Math.PI / 2);
|
|
pp.addMarkerAngle(cp, ah - dir * Math.PI);
|
|
|
|
bb.addPoint(cp.x, cp.y); // TODO: this is too naive, make it better
|
|
if (!isNullish(ctx)) {
|
|
const _r = rx > ry ? rx : ry;
|
|
const sx = rx > ry ? 1 : rx / ry;
|
|
const sy = rx > ry ? ry / rx : 1;
|
|
|
|
ctx.translate(centp.x, centp.y);
|
|
ctx.rotate(xAxisRotation);
|
|
ctx.scale(sx, sy);
|
|
ctx.arc(0, 0, _r, a1, a1 + ad, 1 - sweepFlag);
|
|
ctx.scale(1 / sx, 1 / sy);
|
|
ctx.rotate(-xAxisRotation);
|
|
ctx.translate(-centp.x, -centp.y);
|
|
}
|
|
}
|
|
break;
|
|
case 'Z':
|
|
case 'z':
|
|
if (!isNullish(ctx)) ctx.closePath();
|
|
pp.current = pp.start;
|
|
}
|
|
}
|
|
|
|
return bb;
|
|
}
|
|
|
|
getMarkers () {
|
|
const points = this.PathParser.getMarkerPoints();
|
|
const angles = this.PathParser.getMarkerAngles();
|
|
|
|
const markers = points.map((point, i) => {
|
|
return [point, angles[i]];
|
|
});
|
|
return markers;
|
|
}
|
|
};
|
|
|
|
// pattern element
|
|
svg.Element.pattern = class extends svg.Element.ElementBase {
|
|
createPattern (ctx, element) {
|
|
const width = this.attribute('width').toPixels('x', true);
|
|
const height = this.attribute('height').toPixels('y', true);
|
|
|
|
// render me using a temporary svg element
|
|
const tempSvg = new svg.Element.svg();
|
|
tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
|
|
tempSvg.attributes.width = new svg.Property('width', width + 'px');
|
|
tempSvg.attributes.height = new svg.Property('height', height + 'px');
|
|
tempSvg.attributes.transform = new svg.Property('transform', this.attribute('patternTransform').value);
|
|
tempSvg.children = this.children;
|
|
|
|
const c = document.createElement('canvas');
|
|
c.width = width;
|
|
c.height = height;
|
|
const cctx = c.getContext('2d');
|
|
if (this.attribute('x').hasValue() && this.attribute('y').hasValue()) {
|
|
cctx.translate(this.attribute('x').toPixels('x', true), this.attribute('y').toPixels('y', true));
|
|
}
|
|
// render 3x3 grid so when we transform there's no white space on edges
|
|
for (let x = -1; x <= 1; x++) {
|
|
for (let y = -1; y <= 1; y++) {
|
|
cctx.save();
|
|
cctx.translate(x * c.width, y * c.height);
|
|
tempSvg.render(cctx);
|
|
cctx.restore();
|
|
}
|
|
}
|
|
const pattern = ctx.createPattern(c, 'repeat');
|
|
return pattern;
|
|
}
|
|
};
|
|
|
|
// marker element
|
|
svg.Element.marker = class extends svg.Element.ElementBase {
|
|
render (ctx, point, angle) {
|
|
ctx.translate(point.x, point.y);
|
|
if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(angle);
|
|
if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(ctx.lineWidth, ctx.lineWidth);
|
|
ctx.save();
|
|
|
|
// render me using a temporary svg element
|
|
const tempSvg = new svg.Element.svg();
|
|
tempSvg.attributes.viewBox = new svg.Property('viewBox', this.attribute('viewBox').value);
|
|
tempSvg.attributes.refX = new svg.Property('refX', this.attribute('refX').value);
|
|
tempSvg.attributes.refY = new svg.Property('refY', this.attribute('refY').value);
|
|
tempSvg.attributes.width = new svg.Property('width', this.attribute('markerWidth').value);
|
|
tempSvg.attributes.height = new svg.Property('height', this.attribute('markerHeight').value);
|
|
tempSvg.attributes.fill = new svg.Property('fill', this.attribute('fill').valueOrDefault('black'));
|
|
tempSvg.attributes.stroke = new svg.Property('stroke', this.attribute('stroke').valueOrDefault('none'));
|
|
tempSvg.children = this.children;
|
|
tempSvg.render(ctx);
|
|
|
|
ctx.restore();
|
|
if (this.attribute('markerUnits').valueOrDefault('strokeWidth') === 'strokeWidth') ctx.scale(1 / ctx.lineWidth, 1 / ctx.lineWidth);
|
|
if (this.attribute('orient').valueOrDefault('auto') === 'auto') ctx.rotate(-angle);
|
|
ctx.translate(-point.x, -point.y);
|
|
}
|
|
};
|
|
|
|
// definitions element
|
|
svg.Element.defs = class extends svg.Element.ElementBase {
|
|
render (ctx) {
|
|
// NOOP
|
|
}
|
|
};
|
|
|
|
// base for gradients
|
|
svg.Element.GradientBase = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.gradientUnits = this.attribute('gradientUnits').valueOrDefault('objectBoundingBox');
|
|
|
|
this.stops = [];
|
|
this.children.forEach((child) => {
|
|
if (child.type === 'stop') {
|
|
this.stops.push(child);
|
|
}
|
|
});
|
|
}
|
|
|
|
getGradient () {
|
|
// OVERRIDE ME!
|
|
}
|
|
|
|
createGradient (ctx, element, parentOpacityProp) {
|
|
const stopsContainer = this.getHrefAttribute().hasValue()
|
|
? this.getHrefAttribute().getDefinition()
|
|
: this;
|
|
|
|
const addParentOpacity = function (color) {
|
|
if (parentOpacityProp.hasValue()) {
|
|
const p = new svg.Property('color', color);
|
|
return p.addOpacity(parentOpacityProp).value;
|
|
}
|
|
return color;
|
|
};
|
|
|
|
const g = this.getGradient(ctx, element);
|
|
if (isNullish(g)) return addParentOpacity(stopsContainer.stops[stopsContainer.stops.length - 1].color);
|
|
stopsContainer.stops.forEach(({offset, color}) => {
|
|
g.addColorStop(offset, addParentOpacity(color));
|
|
});
|
|
|
|
if (this.attribute('gradientTransform').hasValue()) {
|
|
// render as transformed pattern on temporary canvas
|
|
const rootView = svg.ViewPort.viewPorts[0];
|
|
|
|
const rect = new svg.Element.rect();
|
|
rect.attributes.x = new svg.Property('x', -svg.MAX_VIRTUAL_PIXELS / 3.0);
|
|
rect.attributes.y = new svg.Property('y', -svg.MAX_VIRTUAL_PIXELS / 3.0);
|
|
rect.attributes.width = new svg.Property('width', svg.MAX_VIRTUAL_PIXELS);
|
|
rect.attributes.height = new svg.Property('height', svg.MAX_VIRTUAL_PIXELS);
|
|
|
|
const group = new svg.Element.g();
|
|
group.attributes.transform = new svg.Property('transform', this.attribute('gradientTransform').value);
|
|
group.children = [rect];
|
|
|
|
const tempSvg = new svg.Element.svg();
|
|
tempSvg.attributes.x = new svg.Property('x', 0);
|
|
tempSvg.attributes.y = new svg.Property('y', 0);
|
|
tempSvg.attributes.width = new svg.Property('width', rootView.width);
|
|
tempSvg.attributes.height = new svg.Property('height', rootView.height);
|
|
tempSvg.children = [group];
|
|
|
|
const c = document.createElement('canvas');
|
|
c.width = rootView.width;
|
|
c.height = rootView.height;
|
|
const tempCtx = c.getContext('2d');
|
|
tempCtx.fillStyle = g;
|
|
tempSvg.render(tempCtx);
|
|
return tempCtx.createPattern(c, 'no-repeat');
|
|
}
|
|
|
|
return g;
|
|
}
|
|
};
|
|
|
|
// linear gradient element
|
|
svg.Element.linearGradient = class extends svg.Element.GradientBase {
|
|
getGradient (ctx, element) {
|
|
const useBB = this.gradientUnits === 'objectBoundingBox' && element.getBoundingBox;
|
|
const bb = useBB
|
|
? element.getBoundingBox()
|
|
: null;
|
|
|
|
if (!this.attribute('x1').hasValue() &&
|
|
!this.attribute('y1').hasValue() &&
|
|
!this.attribute('x2').hasValue() &&
|
|
!this.attribute('y2').hasValue()
|
|
) {
|
|
this.attribute('x1', true).value = 0;
|
|
this.attribute('y1', true).value = 0;
|
|
this.attribute('x2', true).value = 1;
|
|
this.attribute('y2', true).value = 0;
|
|
}
|
|
|
|
const x1 = (useBB
|
|
? bb.x() + bb.width() * this.attribute('x1').numValue()
|
|
: this.attribute('x1').toPixels('x'));
|
|
const y1 = (useBB
|
|
? bb.y() + bb.height() * this.attribute('y1').numValue()
|
|
: this.attribute('y1').toPixels('y'));
|
|
const x2 = (useBB
|
|
? bb.x() + bb.width() * this.attribute('x2').numValue()
|
|
: this.attribute('x2').toPixels('x'));
|
|
const y2 = (useBB
|
|
? bb.y() + bb.height() * this.attribute('y2').numValue()
|
|
: this.attribute('y2').toPixels('y'));
|
|
|
|
if (x1 === x2 && y1 === y2) return null;
|
|
return ctx.createLinearGradient(x1, y1, x2, y2);
|
|
}
|
|
};
|
|
|
|
// radial gradient element
|
|
svg.Element.radialGradient = class extends svg.Element.GradientBase {
|
|
getGradient (ctx, element) {
|
|
const useBB = this.gradientUnits === 'objectBoundingBox' && element.getBoundingBox;
|
|
const bb = useBB ? element.getBoundingBox() : null;
|
|
|
|
if (!this.attribute('cx').hasValue()) this.attribute('cx', true).value = '50%';
|
|
if (!this.attribute('cy').hasValue()) this.attribute('cy', true).value = '50%';
|
|
if (!this.attribute('r').hasValue()) this.attribute('r', true).value = '50%';
|
|
|
|
const cx = (useBB
|
|
? bb.x() + bb.width() * this.attribute('cx').numValue()
|
|
: this.attribute('cx').toPixels('x'));
|
|
const cy = (useBB
|
|
? bb.y() + bb.height() * this.attribute('cy').numValue()
|
|
: this.attribute('cy').toPixels('y'));
|
|
|
|
let fx = cx;
|
|
let fy = cy;
|
|
if (this.attribute('fx').hasValue()) {
|
|
fx = (useBB
|
|
? bb.x() + bb.width() * this.attribute('fx').numValue()
|
|
: this.attribute('fx').toPixels('x'));
|
|
}
|
|
if (this.attribute('fy').hasValue()) {
|
|
fy = (useBB
|
|
? bb.y() + bb.height() * this.attribute('fy').numValue()
|
|
: this.attribute('fy').toPixels('y'));
|
|
}
|
|
|
|
const r = (useBB
|
|
? (bb.width() + bb.height()) / 2.0 * this.attribute('r').numValue()
|
|
: this.attribute('r').toPixels());
|
|
|
|
return ctx.createRadialGradient(fx, fy, 0, cx, cy, r);
|
|
}
|
|
};
|
|
|
|
// gradient stop element
|
|
svg.Element.stop = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.offset = this.attribute('offset').numValue();
|
|
if (this.offset < 0) this.offset = 0;
|
|
if (this.offset > 1) this.offset = 1;
|
|
|
|
let stopColor = this.style('stop-color');
|
|
if (this.style('stop-opacity').hasValue()) {
|
|
stopColor = stopColor.addOpacity(this.style('stop-opacity'));
|
|
}
|
|
this.color = stopColor.value;
|
|
}
|
|
};
|
|
|
|
// animation base element
|
|
svg.Element.AnimateBase = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
svg.Animations.push(this);
|
|
|
|
this.duration = 0.0;
|
|
this.begin = this.attribute('begin').toMilliseconds();
|
|
this.maxDuration = this.begin + this.attribute('dur').toMilliseconds();
|
|
|
|
this.initialValue = null;
|
|
this.initialUnits = '';
|
|
this.removed = false;
|
|
|
|
this.from = this.attribute('from');
|
|
this.to = this.attribute('to');
|
|
this.values = this.attribute('values');
|
|
if (this.values.hasValue()) this.values.value = this.values.value.split(';');
|
|
}
|
|
|
|
getProperty () {
|
|
const attributeType = this.attribute('attributeType').value;
|
|
const attributeName = this.attribute('attributeName').value;
|
|
|
|
if (attributeType === 'CSS') {
|
|
return this.parent.style(attributeName, true);
|
|
}
|
|
return this.parent.attribute(attributeName, true);
|
|
}
|
|
|
|
calcValue () {
|
|
// OVERRIDE ME!
|
|
return '';
|
|
}
|
|
|
|
update (delta) {
|
|
// set initial value
|
|
if (isNullish(this.initialValue)) {
|
|
this.initialValue = this.getProperty().value;
|
|
this.initialUnits = this.getProperty().getUnits();
|
|
}
|
|
|
|
// if we're past the end time
|
|
if (this.duration > this.maxDuration) {
|
|
// loop for indefinitely repeating animations
|
|
if (this.attribute('repeatCount').value === 'indefinite' ||
|
|
this.attribute('repeatDur').value === 'indefinite') {
|
|
this.duration = 0.0;
|
|
} else if (this.attribute('fill').valueOrDefault('remove') === 'freeze' && !this.frozen) {
|
|
this.frozen = true;
|
|
this.parent.animationFrozen = true;
|
|
this.parent.animationFrozenValue = this.getProperty().value;
|
|
} else if (this.attribute('fill').valueOrDefault('remove') === 'remove' && !this.removed) {
|
|
this.removed = true;
|
|
this.getProperty().value = this.parent.animationFrozen ? this.parent.animationFrozenValue : this.initialValue;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
this.duration = this.duration + delta;
|
|
|
|
// if we're past the begin time
|
|
let updated = false;
|
|
if (this.begin < this.duration) {
|
|
let newValue = this.calcValue(); // tween
|
|
|
|
if (this.attribute('type').hasValue()) {
|
|
// for transform, etc.
|
|
const type = this.attribute('type').value;
|
|
newValue = type + '(' + newValue + ')';
|
|
}
|
|
|
|
this.getProperty().value = newValue;
|
|
updated = true;
|
|
}
|
|
|
|
return updated;
|
|
}
|
|
|
|
// fraction of duration we've covered
|
|
progress () {
|
|
const ret = {progress: (this.duration - this.begin) / (this.maxDuration - this.begin)};
|
|
if (this.values.hasValue()) {
|
|
const p = ret.progress * (this.values.value.length - 1);
|
|
const lb = Math.floor(p), ub = Math.ceil(p);
|
|
ret.from = new svg.Property('from', parseFloat(this.values.value[lb]));
|
|
ret.to = new svg.Property('to', parseFloat(this.values.value[ub]));
|
|
ret.progress = (p - lb) / (ub - lb);
|
|
} else {
|
|
ret.from = this.from;
|
|
ret.to = this.to;
|
|
}
|
|
return ret;
|
|
}
|
|
};
|
|
|
|
// animate element
|
|
svg.Element.animate = class extends svg.Element.AnimateBase {
|
|
calcValue () {
|
|
const p = this.progress();
|
|
|
|
// tween value linearly
|
|
const newValue = p.from.numValue() + (p.to.numValue() - p.from.numValue()) * p.progress;
|
|
return newValue + this.initialUnits;
|
|
}
|
|
};
|
|
|
|
// animate color element
|
|
svg.Element.animateColor = class extends svg.Element.AnimateBase {
|
|
calcValue () {
|
|
const p = this.progress();
|
|
const from = new RGBColor(p.from.value);
|
|
const to = new RGBColor(p.to.value);
|
|
|
|
if (from.ok && to.ok) {
|
|
// tween color linearly
|
|
const r = from.r + (to.r - from.r) * p.progress;
|
|
const g = from.g + (to.g - from.g) * p.progress;
|
|
const b = from.b + (to.b - from.b) * p.progress;
|
|
return 'rgb(' + parseInt(r) + ',' + parseInt(g) + ',' + parseInt(b) + ')';
|
|
}
|
|
return this.attribute('from').value;
|
|
}
|
|
};
|
|
|
|
// animate transform element
|
|
svg.Element.animateTransform = class extends svg.Element.animate {
|
|
calcValue () {
|
|
const p = this.progress();
|
|
|
|
// tween value linearly
|
|
const from = svg.ToNumberArray(p.from.value);
|
|
const to = svg.ToNumberArray(p.to.value);
|
|
let newValue = '';
|
|
from.forEach((fr, i) => {
|
|
newValue += fr + (to[i] - fr) * p.progress + ' ';
|
|
});
|
|
return newValue;
|
|
}
|
|
};
|
|
|
|
// font element
|
|
svg.Element.font = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.horizAdvX = this.attribute('horiz-adv-x').numValue();
|
|
|
|
this.isRTL = false;
|
|
this.isArabic = false;
|
|
this.fontFace = null;
|
|
this.missingGlyph = null;
|
|
this.glyphs = [];
|
|
this.children.forEach((child) => {
|
|
if (child.type === 'font-face') {
|
|
this.fontFace = child;
|
|
if (child.style('font-family').hasValue()) {
|
|
svg.Definitions[child.style('font-family').value] = this;
|
|
}
|
|
} else if (child.type === 'missing-glyph') {
|
|
this.missingGlyph = child;
|
|
} else if (child.type === 'glyph') {
|
|
if (child.arabicForm !== '') {
|
|
this.isRTL = true;
|
|
this.isArabic = true;
|
|
if (typeof this.glyphs[child.unicode] === 'undefined') {
|
|
this.glyphs[child.unicode] = [];
|
|
}
|
|
this.glyphs[child.unicode][child.arabicForm] = child;
|
|
} else {
|
|
this.glyphs[child.unicode] = child;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
// font-face element
|
|
svg.Element.fontface = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.ascent = this.attribute('ascent').value;
|
|
this.descent = this.attribute('descent').value;
|
|
this.unitsPerEm = this.attribute('units-per-em').numValue();
|
|
}
|
|
};
|
|
|
|
// missing-glyph element
|
|
svg.Element.missingglyph = class extends svg.Element.path {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.horizAdvX = 0;
|
|
}
|
|
};
|
|
|
|
// glyph element
|
|
svg.Element.glyph = class extends svg.Element.path {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.horizAdvX = this.attribute('horiz-adv-x').numValue();
|
|
this.unicode = this.attribute('unicode').value;
|
|
this.arabicForm = this.attribute('arabic-form').value;
|
|
}
|
|
};
|
|
|
|
// text element
|
|
svg.Element.text = class extends svg.Element.RenderedElementBase {
|
|
constructor (node) {
|
|
super(node, true);
|
|
}
|
|
|
|
setContext (ctx) {
|
|
super.setContext(ctx);
|
|
|
|
let textBaseline = this.style('dominant-baseline').toTextBaseline();
|
|
if (isNullish(textBaseline)) textBaseline = this.style('alignment-baseline').toTextBaseline();
|
|
if (!isNullish(textBaseline)) ctx.textBaseline = textBaseline;
|
|
}
|
|
|
|
getBoundingBox () {
|
|
const x = this.attribute('x').toPixels('x');
|
|
const y = this.attribute('y').toPixels('y');
|
|
const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
|
|
return new svg.BoundingBox(x, y - fontSize, x + Math.floor(fontSize * 2.0 / 3.0) * this.children[0].getText().length, y);
|
|
}
|
|
|
|
renderChildren (ctx) {
|
|
this.x = this.attribute('x').toPixels('x');
|
|
this.y = this.attribute('y').toPixels('y');
|
|
this.x += this.getAnchorDelta(ctx, this, 0);
|
|
this.children.forEach((child, i) => {
|
|
this.renderChild(ctx, this, i);
|
|
});
|
|
}
|
|
|
|
getAnchorDelta (ctx, parent, startI) {
|
|
const textAnchor = this.style('text-anchor').valueOrDefault('start');
|
|
if (textAnchor !== 'start') {
|
|
let width = 0;
|
|
for (let i = startI; i < parent.children.length; i++) {
|
|
const child = parent.children[i];
|
|
if (i > startI && child.attribute('x').hasValue()) break; // new group
|
|
width += child.measureTextRecursive(ctx);
|
|
}
|
|
return -1 * (textAnchor === 'end' ? width : width / 2.0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
renderChild (ctx, parent, i) {
|
|
const child = parent.children[i];
|
|
if (child.attribute('x').hasValue()) {
|
|
child.x = child.attribute('x').toPixels('x') + this.getAnchorDelta(ctx, parent, i);
|
|
if (child.attribute('dx').hasValue()) child.x += child.attribute('dx').toPixels('x');
|
|
} else {
|
|
if (this.attribute('dx').hasValue()) this.x += this.attribute('dx').toPixels('x');
|
|
if (child.attribute('dx').hasValue()) this.x += child.attribute('dx').toPixels('x');
|
|
child.x = this.x;
|
|
}
|
|
this.x = child.x + child.measureText(ctx);
|
|
|
|
if (child.attribute('y').hasValue()) {
|
|
child.y = child.attribute('y').toPixels('y');
|
|
if (child.attribute('dy').hasValue()) child.y += child.attribute('dy').toPixels('y');
|
|
} else {
|
|
if (this.attribute('dy').hasValue()) this.y += this.attribute('dy').toPixels('y');
|
|
if (child.attribute('dy').hasValue()) this.y += child.attribute('dy').toPixels('y');
|
|
child.y = this.y;
|
|
}
|
|
this.y = child.y;
|
|
|
|
child.render(ctx);
|
|
|
|
for (let j = 0; j < child.children.length; j++) {
|
|
this.renderChild(ctx, child, j);
|
|
}
|
|
}
|
|
};
|
|
|
|
// text base
|
|
svg.Element.TextElementBase = class extends svg.Element.RenderedElementBase {
|
|
getGlyph (font, text, i) {
|
|
const c = text[i];
|
|
let glyph = null;
|
|
if (font.isArabic) {
|
|
let arabicForm = 'isolated';
|
|
if ((i === 0 || text[i - 1] === ' ') && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'terminal';
|
|
if (i > 0 && text[i - 1] !== ' ' && i < text.length - 2 && text[i + 1] !== ' ') arabicForm = 'medial';
|
|
if (i > 0 && text[i - 1] !== ' ' && (i === text.length - 1 || text[i + 1] === ' ')) arabicForm = 'initial';
|
|
if (typeof font.glyphs[c] !== 'undefined') {
|
|
glyph = font.glyphs[c][arabicForm];
|
|
if (isNullish(glyph) && font.glyphs[c].type === 'glyph') glyph = font.glyphs[c];
|
|
}
|
|
} else {
|
|
glyph = font.glyphs[c];
|
|
}
|
|
if (isNullish(glyph)) glyph = font.missingGlyph;
|
|
return glyph;
|
|
}
|
|
|
|
renderChildren (ctx) {
|
|
const customFont = this.parent.style('font-family').getDefinition();
|
|
if (!isNullish(customFont)) {
|
|
const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
|
|
const fontStyle = this.parent.style('font-style').valueOrDefault(svg.Font.Parse(svg.ctx.font).fontStyle);
|
|
let text = this.getText();
|
|
if (customFont.isRTL) text = text.split('').reverse().join('');
|
|
|
|
const dx = svg.ToNumberArray(this.parent.attribute('dx').value);
|
|
for (let i = 0; i < text.length; i++) {
|
|
const glyph = this.getGlyph(customFont, text, i);
|
|
const scale = fontSize / customFont.fontFace.unitsPerEm;
|
|
ctx.translate(this.x, this.y);
|
|
ctx.scale(scale, -scale);
|
|
const lw = ctx.lineWidth;
|
|
ctx.lineWidth = ctx.lineWidth * customFont.fontFace.unitsPerEm / fontSize;
|
|
if (fontStyle === 'italic') ctx.transform(1, 0, 0.4, 1, 0, 0);
|
|
glyph.render(ctx);
|
|
if (fontStyle === 'italic') ctx.transform(1, 0, -0.4, 1, 0, 0);
|
|
ctx.lineWidth = lw;
|
|
ctx.scale(1 / scale, -1 / scale);
|
|
ctx.translate(-this.x, -this.y);
|
|
|
|
this.x += fontSize * (glyph.horizAdvX || customFont.horizAdvX) / customFont.fontFace.unitsPerEm;
|
|
if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
|
|
this.x += dx[i];
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (ctx.fillStyle !== '') ctx.fillText(svg.compressSpaces(this.getText()), this.x, this.y);
|
|
if (ctx.strokeStyle !== '') ctx.strokeText(svg.compressSpaces(this.getText()), this.x, this.y);
|
|
}
|
|
|
|
getText () {
|
|
// OVERRIDE ME
|
|
}
|
|
|
|
measureTextRecursive (ctx) {
|
|
let width = this.measureText(ctx);
|
|
this.children.forEach((child) => {
|
|
width += child.measureTextRecursive(ctx);
|
|
});
|
|
return width;
|
|
}
|
|
|
|
measureText (ctx) {
|
|
const customFont = this.parent.style('font-family').getDefinition();
|
|
if (!isNullish(customFont)) {
|
|
const fontSize = this.parent.style('font-size').numValueOrDefault(svg.Font.Parse(svg.ctx.font).fontSize);
|
|
let measure = 0;
|
|
let text = this.getText();
|
|
if (customFont.isRTL) text = text.split('').reverse().join('');
|
|
const dx = svg.ToNumberArray(this.parent.attribute('dx').value);
|
|
for (let i = 0; i < text.length; i++) {
|
|
const glyph = this.getGlyph(customFont, text, i);
|
|
measure += (glyph.horizAdvX || customFont.horizAdvX) * fontSize / customFont.fontFace.unitsPerEm;
|
|
if (typeof dx[i] !== 'undefined' && !isNaN(dx[i])) {
|
|
measure += dx[i];
|
|
}
|
|
}
|
|
return measure;
|
|
}
|
|
|
|
const textToMeasure = svg.compressSpaces(this.getText());
|
|
if (!ctx.measureText) return textToMeasure.length * 10;
|
|
|
|
ctx.save();
|
|
this.setContext(ctx);
|
|
const {width} = ctx.measureText(textToMeasure);
|
|
ctx.restore();
|
|
return width;
|
|
}
|
|
};
|
|
|
|
// tspan
|
|
svg.Element.tspan = class extends svg.Element.TextElementBase {
|
|
constructor (node) {
|
|
super(node, true);
|
|
|
|
this.text = node.nodeValue || node.text || '';
|
|
}
|
|
getText () {
|
|
return this.text;
|
|
}
|
|
};
|
|
|
|
// tref
|
|
svg.Element.tref = class extends svg.Element.TextElementBase {
|
|
getText () {
|
|
const element = this.getHrefAttribute().getDefinition();
|
|
if (!isNullish(element)) return element.children[0].getText();
|
|
return undefined;
|
|
}
|
|
};
|
|
|
|
// a element
|
|
svg.Element.a = class extends svg.Element.TextElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.hasText = true;
|
|
[...node.childNodes].forEach((childNode) => {
|
|
if (childNode.nodeType !== 3) {
|
|
this.hasText = false;
|
|
}
|
|
});
|
|
// this might contain text
|
|
this.text = this.hasText ? node.childNodes[0].nodeValue : '';
|
|
}
|
|
|
|
getText () {
|
|
return this.text;
|
|
}
|
|
|
|
renderChildren (ctx) {
|
|
if (this.hasText) {
|
|
// render as text element
|
|
super.renderChildren(ctx);
|
|
const fontSize = new svg.Property('fontSize', svg.Font.Parse(svg.ctx.font).fontSize);
|
|
svg.Mouse.checkBoundingBox(this, new svg.BoundingBox(this.x, this.y - fontSize.toPixels('y'), this.x + this.measureText(ctx), this.y));
|
|
} else {
|
|
// render as temporary group
|
|
const g = new svg.Element.g();
|
|
g.children = this.children;
|
|
g.parent = this;
|
|
g.render(ctx);
|
|
}
|
|
}
|
|
|
|
onclick () {
|
|
window.open(this.getHrefAttribute().value);
|
|
}
|
|
|
|
onmousemove () {
|
|
svg.ctx.canvas.style.cursor = 'pointer';
|
|
}
|
|
};
|
|
|
|
// image element
|
|
svg.Element.image = class extends svg.Element.RenderedElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
const href = this.getHrefAttribute().value;
|
|
if (href === '') {
|
|
return;
|
|
}
|
|
this._isSvg = href.match(/\.svg$/);
|
|
|
|
svg.Images.push(this);
|
|
this.loaded = false;
|
|
if (!this._isSvg) {
|
|
this.img = document.createElement('img');
|
|
if (svg.opts.useCORS === true) {
|
|
this.img.crossOrigin = 'Anonymous';
|
|
}
|
|
this.img.addEventListener('load', () => {
|
|
this.loaded = true;
|
|
});
|
|
this.img.addEventListener('error', () => {
|
|
svg.log('ERROR: image "' + href + '" not found');
|
|
this.loaded = true;
|
|
});
|
|
this.img.src = href;
|
|
} else {
|
|
svg.ajax(href, true).then((img) => { // eslint-disable-line promise/prefer-await-to-then, promise/always-return
|
|
this.img = img;
|
|
this.loaded = true;
|
|
}).catch((err) => { // eslint-disable-line promise/prefer-await-to-callbacks
|
|
this.erred = true;
|
|
console.error('Ajax error for canvg', err); // eslint-disable-line no-console
|
|
});
|
|
}
|
|
}
|
|
renderChildren (ctx) {
|
|
const x = this.attribute('x').toPixels('x');
|
|
const y = this.attribute('y').toPixels('y');
|
|
|
|
const width = this.attribute('width').toPixels('x');
|
|
const height = this.attribute('height').toPixels('y');
|
|
if (width === 0 || height === 0) return;
|
|
|
|
ctx.save();
|
|
if (this._isSvg) {
|
|
ctx.drawSvg(this.img, x, y, width, height);
|
|
} else {
|
|
ctx.translate(x, y);
|
|
svg.AspectRatio(
|
|
ctx,
|
|
this.attribute('preserveAspectRatio').value,
|
|
width,
|
|
this.img.width,
|
|
height,
|
|
this.img.height,
|
|
0,
|
|
0
|
|
);
|
|
ctx.drawImage(this.img, 0, 0);
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
getBoundingBox () {
|
|
const x = this.attribute('x').toPixels('x');
|
|
const y = this.attribute('y').toPixels('y');
|
|
const width = this.attribute('width').toPixels('x');
|
|
const height = this.attribute('height').toPixels('y');
|
|
return new svg.BoundingBox(x, y, x + width, y + height);
|
|
}
|
|
};
|
|
|
|
// group element
|
|
svg.Element.g = class extends svg.Element.RenderedElementBase {
|
|
getBoundingBox () {
|
|
const bb = new svg.BoundingBox();
|
|
this.children.forEach((child) => {
|
|
bb.addBoundingBox(child.getBoundingBox());
|
|
});
|
|
return bb;
|
|
}
|
|
};
|
|
|
|
// symbol element
|
|
svg.Element.symbol = class extends svg.Element.RenderedElementBase {
|
|
render (ctx) {
|
|
// NO RENDER
|
|
}
|
|
};
|
|
|
|
// style element
|
|
svg.Element.style = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
// text, or spaces then CDATA
|
|
let css = '';
|
|
[...node.childNodes].forEach(({nodeValue}) => {
|
|
css += nodeValue;
|
|
});
|
|
// remove comments
|
|
css = css.replace(/(\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/)|(^[\s]*\/\/.*)/gm, ''); // eslint-disable-line unicorn/no-unsafe-regex
|
|
// replace whitespace
|
|
css = svg.compressSpaces(css);
|
|
const cssDefs = css.split('}');
|
|
cssDefs.forEach((cssDef) => {
|
|
if (svg.trim(cssDef) !== '') {
|
|
let [cssClasses, cssProps] = cssDef.split('{');
|
|
cssClasses = cssClasses.split(',');
|
|
cssProps = cssProps.split(';');
|
|
cssClasses.forEach((cssClass) => {
|
|
cssClass = svg.trim(cssClass);
|
|
if (cssClass !== '') {
|
|
const props = {};
|
|
cssProps.forEach((cssProp) => {
|
|
const prop = cssProp.indexOf(':');
|
|
const name = cssProp.substr(0, prop);
|
|
const value = cssProp.substr(prop + 1, cssProp.length - prop);
|
|
if (!isNullish(name) && !isNullish(value)) {
|
|
props[svg.trim(name)] = new svg.Property(svg.trim(name), svg.trim(value));
|
|
}
|
|
});
|
|
svg.Styles[cssClass] = props;
|
|
if (cssClass === '@font-face') {
|
|
const fontFamily = props['font-family'].value.replace(/"/g, '');
|
|
const srcs = props.src.value.split(',');
|
|
srcs.forEach((src) => {
|
|
if (src.includes('format("svg")')) {
|
|
const urlStart = src.indexOf('url');
|
|
const urlEnd = src.indexOf(')', urlStart);
|
|
const url = src.substr(urlStart + 5, urlEnd - urlStart - 6);
|
|
// Can this ajax safely be converted to async?
|
|
const doc = svg.parseXml(svg.ajax(url));
|
|
const fonts = doc.getElementsByTagName('font');
|
|
[...fonts].forEach((font) => {
|
|
font = svg.CreateElement(font);
|
|
svg.Definitions[fontFamily] = font;
|
|
});
|
|
}
|
|
});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
});
|
|
}
|
|
};
|
|
|
|
// use element
|
|
svg.Element.use = class extends svg.Element.RenderedElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this._el = this.getHrefAttribute().getDefinition();
|
|
}
|
|
|
|
setContext (ctx) {
|
|
super.setContext(ctx);
|
|
if (this.attribute('x').hasValue()) ctx.translate(this.attribute('x').toPixels('x'), 0);
|
|
if (this.attribute('y').hasValue()) ctx.translate(0, this.attribute('y').toPixels('y'));
|
|
}
|
|
|
|
path (ctx) {
|
|
const {_el: element} = this;
|
|
if (!isNullish(element)) element.path(ctx);
|
|
}
|
|
|
|
getBoundingBox () {
|
|
const {_el: element} = this;
|
|
if (!isNullish(element)) return element.getBoundingBox();
|
|
return undefined;
|
|
}
|
|
|
|
renderChildren (ctx) {
|
|
const {_el: element} = this;
|
|
if (!isNullish(element)) {
|
|
let tempSvg = element;
|
|
if (element.type === 'symbol') {
|
|
// render me using a temporary svg element in symbol cases (https://www.w3.org/TR/SVG/struct.html#UseElement)
|
|
tempSvg = new svg.Element.svg();
|
|
tempSvg.type = 'svg';
|
|
tempSvg.attributes.viewBox = new svg.Property('viewBox', element.attribute('viewBox').value);
|
|
tempSvg.attributes.preserveAspectRatio = new svg.Property('preserveAspectRatio', element.attribute('preserveAspectRatio').value);
|
|
tempSvg.attributes.overflow = new svg.Property('overflow', element.attribute('overflow').value);
|
|
tempSvg.children = element.children;
|
|
}
|
|
if (tempSvg.type === 'svg') {
|
|
// if symbol or svg, inherit width/height from me
|
|
if (this.attribute('width').hasValue()) tempSvg.attributes.width = new svg.Property('width', this.attribute('width').value);
|
|
if (this.attribute('height').hasValue()) tempSvg.attributes.height = new svg.Property('height', this.attribute('height').value);
|
|
}
|
|
const oldParent = tempSvg.parent;
|
|
tempSvg.parent = null;
|
|
tempSvg.render(ctx);
|
|
tempSvg.parent = oldParent;
|
|
}
|
|
}
|
|
};
|
|
|
|
// mask element
|
|
svg.Element.mask = class extends svg.Element.ElementBase {
|
|
apply (ctx, element) {
|
|
// render as temp svg
|
|
let x = this.attribute('x').toPixels('x');
|
|
let y = this.attribute('y').toPixels('y');
|
|
let width = this.attribute('width').toPixels('x');
|
|
let height = this.attribute('height').toPixels('y');
|
|
|
|
if (width === 0 && height === 0) {
|
|
const bb = new svg.BoundingBox();
|
|
this.children.forEach((child) => {
|
|
bb.addBoundingBox(child.getBoundingBox());
|
|
});
|
|
x = Math.floor(bb.x1);
|
|
y = Math.floor(bb.y1);
|
|
width = Math.floor(bb.width());
|
|
height = Math.floor(bb.height());
|
|
}
|
|
|
|
// temporarily remove mask to avoid recursion
|
|
const mask = element.attribute('mask').value;
|
|
element.attribute('mask').value = '';
|
|
|
|
const cMask = document.createElement('canvas');
|
|
cMask.width = x + width;
|
|
cMask.height = y + height;
|
|
const maskCtx = cMask.getContext('2d');
|
|
this.renderChildren(maskCtx);
|
|
|
|
const c = document.createElement('canvas');
|
|
c.width = x + width;
|
|
c.height = y + height;
|
|
const tempCtx = c.getContext('2d');
|
|
element.render(tempCtx);
|
|
tempCtx.globalCompositeOperation = 'destination-in';
|
|
tempCtx.fillStyle = maskCtx.createPattern(cMask, 'no-repeat');
|
|
tempCtx.fillRect(0, 0, x + width, y + height);
|
|
|
|
ctx.fillStyle = tempCtx.createPattern(c, 'no-repeat');
|
|
ctx.fillRect(0, 0, x + width, y + height);
|
|
|
|
// reassign mask
|
|
element.attribute('mask').value = mask;
|
|
}
|
|
|
|
render (ctx) {
|
|
// NO RENDER
|
|
}
|
|
};
|
|
|
|
// clip element
|
|
svg.Element.clipPath = class extends svg.Element.ElementBase {
|
|
apply (ctx) {
|
|
this.children.forEach((child) => {
|
|
if (typeof child.path !== 'undefined') {
|
|
let transform = null;
|
|
if (child.attribute('transform').hasValue()) {
|
|
transform = new svg.Transform(child.attribute('transform').value);
|
|
transform.apply(ctx);
|
|
}
|
|
child.path(ctx);
|
|
ctx.clip();
|
|
if (transform) { transform.unapply(ctx); }
|
|
}
|
|
});
|
|
}
|
|
render (ctx) {
|
|
// NO RENDER
|
|
}
|
|
};
|
|
|
|
// filters
|
|
svg.Element.filter = class extends svg.Element.ElementBase {
|
|
apply (ctx, element) {
|
|
// render as temp svg
|
|
const bb = element.getBoundingBox();
|
|
const x = Math.floor(bb.x1);
|
|
const y = Math.floor(bb.y1);
|
|
const width = Math.floor(bb.width());
|
|
const height = Math.floor(bb.height());
|
|
|
|
// temporarily remove filter to avoid recursion
|
|
const filter = element.style('filter').value;
|
|
element.style('filter').value = '';
|
|
|
|
let px = 0, py = 0;
|
|
this.children.forEach((child) => {
|
|
const efd = child.extraFilterDistance || 0;
|
|
px = Math.max(px, efd);
|
|
py = Math.max(py, efd);
|
|
});
|
|
|
|
const c = document.createElement('canvas');
|
|
c.width = width + 2 * px;
|
|
c.height = height + 2 * py;
|
|
const tempCtx = c.getContext('2d');
|
|
tempCtx.translate(-x + px, -y + py);
|
|
element.render(tempCtx);
|
|
|
|
// apply filters
|
|
this.children.forEach((child) => {
|
|
child.apply(tempCtx, 0, 0, width + 2 * px, height + 2 * py);
|
|
});
|
|
|
|
// render on me
|
|
ctx.drawImage(c, 0, 0, width + 2 * px, height + 2 * py, x - px, y - py, width + 2 * px, height + 2 * py);
|
|
|
|
// reassign filter
|
|
element.style('filter', true).value = filter;
|
|
}
|
|
|
|
render (ctx) {
|
|
// NO RENDER
|
|
}
|
|
};
|
|
|
|
svg.Element.feMorphology = class extends svg.Element.ElementBase {
|
|
apply (ctx, x, y, width, height) {
|
|
// TODO: implement
|
|
}
|
|
};
|
|
|
|
svg.Element.feComposite = class extends svg.Element.ElementBase {
|
|
apply (ctx, x, y, width, height) {
|
|
// TODO: implement
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @param {Uint8ClampedArray} img
|
|
* @param {Integer} x
|
|
* @param {Integer} y
|
|
* @param {Float} width
|
|
* @param {Float} height
|
|
* @param {Integer} rgba
|
|
* @returns {void}
|
|
*/
|
|
function imGet (img, x, y, width, height, rgba) {
|
|
return img[y * width * 4 + x * 4 + rgba];
|
|
}
|
|
|
|
/**
|
|
* @param {Uint8ClampedArray} img
|
|
* @param {Integer} x
|
|
* @param {Integer} y
|
|
* @param {Float} width
|
|
* @param {Float} height
|
|
* @param {Integer} rgba
|
|
* @param {Float} val
|
|
* @returns {void}
|
|
*/
|
|
function imSet (img, x, y, width, height, rgba, val) {
|
|
img[y * width * 4 + x * 4 + rgba] = val;
|
|
}
|
|
|
|
svg.Element.feColorMatrix = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
let matrix = svg.ToNumberArray(this.attribute('values').value);
|
|
switch (this.attribute('type').valueOrDefault('matrix')) { // https://www.w3.org/TR/SVG/filters.html#feColorMatrixElement
|
|
case 'saturate': {
|
|
const s = matrix[0];
|
|
matrix = [
|
|
0.213 + 0.787 * s, 0.715 - 0.715 * s, 0.072 - 0.072 * s, 0, 0,
|
|
0.213 - 0.213 * s, 0.715 + 0.285 * s, 0.072 - 0.072 * s, 0, 0,
|
|
0.213 - 0.213 * s, 0.715 - 0.715 * s, 0.072 + 0.928 * s, 0, 0,
|
|
0, 0, 0, 1, 0,
|
|
0, 0, 0, 0, 1
|
|
];
|
|
break;
|
|
} case 'hueRotate': {
|
|
const a = matrix[0] * Math.PI / 180.0;
|
|
const c = function (m1, m2, m3) {
|
|
return m1 + Math.cos(a) * m2 + Math.sin(a) * m3;
|
|
};
|
|
matrix = [
|
|
c(0.213, 0.787, -0.213), c(0.715, -0.715, -0.715), c(0.072, -0.072, 0.928), 0, 0,
|
|
c(0.213, -0.213, 0.143), c(0.715, 0.285, 0.140), c(0.072, -0.072, -0.283), 0, 0,
|
|
c(0.213, -0.213, -0.787), c(0.715, -0.715, 0.715), c(0.072, 0.928, 0.072), 0, 0,
|
|
0, 0, 0, 1, 0,
|
|
0, 0, 0, 0, 1
|
|
];
|
|
break;
|
|
} case 'luminanceToAlpha':
|
|
matrix = [
|
|
0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0,
|
|
0, 0, 0, 0, 0,
|
|
0.2125, 0.7154, 0.0721, 0, 0,
|
|
0, 0, 0, 0, 1
|
|
];
|
|
break;
|
|
}
|
|
this.matrix = matrix;
|
|
|
|
this._m = (i, v) => {
|
|
const mi = matrix[i];
|
|
return mi * (mi < 0 ? v - 255 : v);
|
|
};
|
|
}
|
|
apply (ctx, x, y, width, height) {
|
|
const {_m: m} = this;
|
|
// assuming x==0 && y==0 for now
|
|
const srcData = ctx.getImageData(0, 0, width, height);
|
|
for (let _y = 0; _y < height; _y++) {
|
|
for (let _x = 0; _x < width; _x++) {
|
|
const r = imGet(srcData.data, _x, _y, width, height, 0);
|
|
const g = imGet(srcData.data, _x, _y, width, height, 1);
|
|
const b = imGet(srcData.data, _x, _y, width, height, 2);
|
|
const a = imGet(srcData.data, _x, _y, width, height, 3);
|
|
imSet(srcData.data, _x, _y, width, height, 0, m(0, r) + m(1, g) + m(2, b) + m(3, a) + m(4, 1));
|
|
imSet(srcData.data, _x, _y, width, height, 1, m(5, r) + m(6, g) + m(7, b) + m(8, a) + m(9, 1));
|
|
imSet(srcData.data, _x, _y, width, height, 2, m(10, r) + m(11, g) + m(12, b) + m(13, a) + m(14, 1));
|
|
imSet(srcData.data, _x, _y, width, height, 3, m(15, r) + m(16, g) + m(17, b) + m(18, a) + m(19, 1));
|
|
}
|
|
}
|
|
ctx.clearRect(0, 0, width, height);
|
|
ctx.putImageData(srcData, 0, 0);
|
|
}
|
|
};
|
|
|
|
svg.Element.feGaussianBlur = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super(node);
|
|
|
|
this.blurRadius = Math.floor(this.attribute('stdDeviation').numValue());
|
|
this.extraFilterDistance = this.blurRadius;
|
|
}
|
|
|
|
apply (ctx, x, y, width, height) {
|
|
// Todo: This might not be a problem anymore with out `instanceof` fix
|
|
// StackBlur requires canvas be on document
|
|
ctx.canvas.id = svg.UniqueId();
|
|
ctx.canvas.style.display = 'none';
|
|
document.body.append(ctx.canvas);
|
|
canvasRGBA(ctx.canvas, x, y, width, height, this.blurRadius);
|
|
ctx.canvas.remove();
|
|
}
|
|
};
|
|
|
|
// title element, do nothing
|
|
svg.Element.title = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super();
|
|
}
|
|
};
|
|
|
|
// desc element, do nothing
|
|
svg.Element.desc = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super();
|
|
}
|
|
};
|
|
|
|
svg.Element.MISSING = class extends svg.Element.ElementBase {
|
|
constructor (node) {
|
|
super();
|
|
svg.log('ERROR: Element \'' + node.nodeName + '\' not yet implemented.');
|
|
}
|
|
};
|
|
|
|
// element factory
|
|
svg.CreateElement = function (node) {
|
|
const className = node.nodeName
|
|
.replace(/^[^:]+:/, '') // remove namespace
|
|
.replace(/-/g, ''); // remove dashes
|
|
let e;
|
|
if (typeof svg.Element[className] !== 'undefined') {
|
|
e = new svg.Element[className](node);
|
|
} else {
|
|
e = new svg.Element.MISSING(node);
|
|
}
|
|
|
|
e.type = node.nodeName;
|
|
return e;
|
|
};
|
|
|
|
// load from url
|
|
svg.load = async function (ctx, url) {
|
|
const dom = await svg.ajax(url, true);
|
|
return svg.loadXml(ctx, dom);
|
|
};
|
|
|
|
// load from xml
|
|
svg.loadXml = function (ctx, xml) {
|
|
return svg.loadXmlDoc(ctx, svg.parseXml(xml));
|
|
};
|
|
|
|
svg.loadXmlDoc = function (ctx, dom) {
|
|
let res;
|
|
svg.init(ctx);
|
|
|
|
const mapXY = function (p) {
|
|
let e = ctx.canvas;
|
|
while (e) {
|
|
p.x -= e.offsetLeft;
|
|
p.y -= e.offsetTop;
|
|
e = e.offsetParent;
|
|
}
|
|
if (window.scrollX) p.x += window.scrollX;
|
|
if (window.scrollY) p.y += window.scrollY;
|
|
return p;
|
|
};
|
|
|
|
// bind mouse
|
|
if (svg.opts.ignoreMouse !== true) {
|
|
ctx.canvas.addEventListener('click', function (e) {
|
|
const args = !isNullish(e)
|
|
? [e.clientX, e.clientY]
|
|
: [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
|
|
const {x, y} = mapXY(new svg.Point(...args));
|
|
svg.Mouse.onclick(x, y);
|
|
});
|
|
ctx.canvas.addEventListener('mousemove', function (e) {
|
|
const args = !isNullish(e)
|
|
? [e.clientX, e.clientY]
|
|
: [event.clientX, event.clientY]; // eslint-disable-line no-restricted-globals
|
|
const {x, y} = mapXY(new svg.Point(...args));
|
|
svg.Mouse.onmousemove(x, y);
|
|
});
|
|
}
|
|
|
|
const e = svg.CreateElement(dom.documentElement);
|
|
e.root = true;
|
|
|
|
// render loop
|
|
let isFirstRender = true;
|
|
const draw = function (resolve) {
|
|
svg.ViewPort.Clear();
|
|
if (ctx.canvas.parentNode) {
|
|
svg.ViewPort.SetCurrent(
|
|
ctx.canvas.parentNode.clientWidth,
|
|
ctx.canvas.parentNode.clientHeight
|
|
);
|
|
}
|
|
|
|
if (svg.opts.ignoreDimensions !== true) {
|
|
// set canvas size
|
|
if (e.style('width').hasValue()) {
|
|
ctx.canvas.width = e.style('width').toPixels('x');
|
|
ctx.canvas.style.width = ctx.canvas.width + 'px';
|
|
}
|
|
if (e.style('height').hasValue()) {
|
|
ctx.canvas.height = e.style('height').toPixels('y');
|
|
ctx.canvas.style.height = ctx.canvas.height + 'px';
|
|
}
|
|
}
|
|
let cWidth = ctx.canvas.clientWidth || ctx.canvas.width;
|
|
let cHeight = ctx.canvas.clientHeight || ctx.canvas.height;
|
|
if (svg.opts.ignoreDimensions === true &&
|
|
e.style('width').hasValue() && e.style('height').hasValue()
|
|
) {
|
|
cWidth = e.style('width').toPixels('x');
|
|
cHeight = e.style('height').toPixels('y');
|
|
}
|
|
svg.ViewPort.SetCurrent(cWidth, cHeight);
|
|
|
|
if (!isNullish(svg.opts.offsetX)) {
|
|
e.attribute('x', true).value = svg.opts.offsetX;
|
|
}
|
|
if (!isNullish(svg.opts.offsetY)) {
|
|
e.attribute('y', true).value = svg.opts.offsetY;
|
|
}
|
|
if (!isNullish(svg.opts.scaleWidth) || !isNullish(svg.opts.scaleHeight)) {
|
|
const viewBox = svg.ToNumberArray(e.attribute('viewBox').value);
|
|
let xRatio = null, yRatio = null;
|
|
|
|
if (!isNullish(svg.opts.scaleWidth)) {
|
|
if (e.attribute('width').hasValue()) {
|
|
xRatio = e.attribute('width').toPixels('x') / svg.opts.scaleWidth;
|
|
} else if (!isNaN(viewBox[2])) {
|
|
xRatio = viewBox[2] / svg.opts.scaleWidth;
|
|
}
|
|
}
|
|
|
|
if (!isNullish(svg.opts.scaleHeight)) {
|
|
if (e.attribute('height').hasValue()) {
|
|
yRatio = e.attribute('height').toPixels('y') / svg.opts.scaleHeight;
|
|
} else if (!isNaN(viewBox[3])) {
|
|
yRatio = viewBox[3] / svg.opts.scaleHeight;
|
|
}
|
|
}
|
|
|
|
if (isNullish(xRatio)) { xRatio = yRatio; }
|
|
if (isNullish(yRatio)) { yRatio = xRatio; }
|
|
|
|
e.attribute('width', true).value = svg.opts.scaleWidth;
|
|
e.attribute('height', true).value = svg.opts.scaleHeight;
|
|
e.attribute('viewBox', true).value = '0 0 ' + (cWidth * xRatio) + ' ' + (cHeight * yRatio);
|
|
e.attribute('preserveAspectRatio', true).value = 'none';
|
|
}
|
|
|
|
// clear and render
|
|
if (svg.opts.ignoreClear !== true) {
|
|
ctx.clearRect(0, 0, cWidth, cHeight);
|
|
}
|
|
e.render(ctx);
|
|
if (isFirstRender) {
|
|
isFirstRender = false;
|
|
resolve(dom);
|
|
}
|
|
};
|
|
|
|
let waitingForImages = true;
|
|
svg.intervalID = setInterval(function () {
|
|
let needUpdate = false;
|
|
|
|
if (waitingForImages && svg.ImagesLoaded()) {
|
|
waitingForImages = false;
|
|
needUpdate = true;
|
|
}
|
|
|
|
// need update from mouse events?
|
|
if (svg.opts.ignoreMouse !== true) {
|
|
needUpdate = needUpdate || svg.Mouse.hasEvents();
|
|
}
|
|
|
|
// need update from animations?
|
|
if (svg.opts.ignoreAnimation !== true) {
|
|
svg.Animations.forEach((animation) => {
|
|
const needAnimationUpdate = animation.update(1000 / svg.FRAMERATE);
|
|
needUpdate = needUpdate || needAnimationUpdate;
|
|
});
|
|
}
|
|
|
|
// need update from redraw?
|
|
if (typeof svg.opts.forceRedraw === 'function') {
|
|
if (svg.opts.forceRedraw() === true) {
|
|
needUpdate = true;
|
|
}
|
|
}
|
|
|
|
// render if needed
|
|
if (needUpdate) {
|
|
draw(res);
|
|
svg.Mouse.runEvents(); // run and clear our events
|
|
}
|
|
}, 1000 / svg.FRAMERATE);
|
|
// Todo: Replace with an image loading Promise utility?
|
|
return new Promise((resolve, reject) => { // eslint-disable-line promise/avoid-new
|
|
if (svg.ImagesLoaded()) {
|
|
waitingForImages = false;
|
|
draw(resolve);
|
|
return;
|
|
}
|
|
res = resolve;
|
|
});
|
|
};
|
|
|
|
svg.stop = () => {
|
|
if (svg.intervalID) {
|
|
clearInterval(svg.intervalID);
|
|
}
|
|
};
|
|
|
|
svg.Mouse = {
|
|
events: [],
|
|
hasEvents () { return this.events.length !== 0; },
|
|
|
|
onclick (x, y) {
|
|
this.events.push({
|
|
type: 'onclick', x, y,
|
|
run (e) { if (e.onclick) e.onclick(); }
|
|
});
|
|
},
|
|
|
|
onmousemove (x, y) {
|
|
this.events.push({
|
|
type: 'onmousemove', x, y,
|
|
run (e) { if (e.onmousemove) e.onmousemove(); }
|
|
});
|
|
},
|
|
|
|
eventElements: [],
|
|
|
|
checkPath (element, ctx) {
|
|
this.events.forEach(({x, y}, i) => {
|
|
if (ctx.isPointInPath && ctx.isPointInPath(x, y)) {
|
|
this.eventElements[i] = element;
|
|
}
|
|
});
|
|
},
|
|
|
|
checkBoundingBox (element, bb) {
|
|
this.events.forEach(({x, y}, i) => {
|
|
if (bb.isPointInBox(x, y)) {
|
|
this.eventElements[i] = element;
|
|
}
|
|
});
|
|
},
|
|
|
|
runEvents () {
|
|
svg.ctx.canvas.style.cursor = '';
|
|
|
|
this.events.forEach((e, i) => {
|
|
let element = this.eventElements[i];
|
|
while (element) {
|
|
e.run(element);
|
|
element = element.parent;
|
|
}
|
|
});
|
|
|
|
// done running, clear
|
|
this.events = [];
|
|
this.eventElements = [];
|
|
}
|
|
};
|
|
|
|
return svg;
|
|
}
|
|
|
|
if (typeof CanvasRenderingContext2D !== 'undefined') {
|
|
CanvasRenderingContext2D.prototype.drawSvg = function (s, dx, dy, dw, dh) {
|
|
canvg(this.canvas, s, {
|
|
ignoreMouse: true,
|
|
ignoreAnimation: true,
|
|
ignoreDimensions: true,
|
|
ignoreClear: true,
|
|
offsetX: dx,
|
|
offsetY: dy,
|
|
scaleWidth: dw,
|
|
scaleHeight: dh
|
|
});
|
|
};
|
|
}
|