334 lines
11 KiB
JavaScript
334 lines
11 KiB
JavaScript
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/*
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Viz.js 2.1.2 (Graphviz 2.40.1, Expat 2.2.5, Emscripten 1.37.36)
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Copyright (c) 2014-2018 Michael Daines
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Licensed under MIT license
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This distribution contains other software in object code form:
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Graphviz
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Licensed under Eclipse Public License - v 1.0
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http://www.graphviz.org
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Expat
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Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd and Clark Cooper
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Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Expat maintainers.
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Licensed under MIT license
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http://www.libexpat.org
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zlib
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Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
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http://www.zlib.net/zlib_license.html
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*/
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(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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typeof define === 'function' && define.amd ? define(factory) :
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(global.Viz = factory());
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}(this, (function () { 'use strict';
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
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return typeof obj;
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} : function (obj) {
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return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
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};
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var classCallCheck = function (instance, Constructor) {
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if (!(instance instanceof Constructor)) {
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throw new TypeError("Cannot call a class as a function");
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}
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};
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var createClass = function () {
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function defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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return function (Constructor, protoProps, staticProps) {
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if (protoProps) defineProperties(Constructor.prototype, protoProps);
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if (staticProps) defineProperties(Constructor, staticProps);
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return Constructor;
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};
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}();
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var _extends = Object.assign || function (target) {
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for (var i = 1; i < arguments.length; i++) {
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var source = arguments[i];
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for (var key in source) {
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if (Object.prototype.hasOwnProperty.call(source, key)) {
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target[key] = source[key];
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}
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}
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}
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return target;
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};
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var WorkerWrapper = function () {
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function WorkerWrapper(worker) {
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var _this = this;
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classCallCheck(this, WorkerWrapper);
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this.worker = worker;
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this.listeners = [];
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this.nextId = 0;
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this.worker.addEventListener('message', function (event) {
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var id = event.data.id;
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var error = event.data.error;
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var result = event.data.result;
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_this.listeners[id](error, result);
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delete _this.listeners[id];
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});
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}
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createClass(WorkerWrapper, [{
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key: 'render',
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value: function render(src, options) {
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var _this2 = this;
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return new Promise(function (resolve, reject) {
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var id = _this2.nextId++;
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_this2.listeners[id] = function (error, result) {
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if (error) {
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reject(new Error(error.message, error.fileName, error.lineNumber));
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return;
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}
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resolve(result);
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};
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_this2.worker.postMessage({ id: id, src: src, options: options });
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});
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}
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}]);
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return WorkerWrapper;
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}();
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var ModuleWrapper = function ModuleWrapper(module, render) {
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classCallCheck(this, ModuleWrapper);
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var instance = module();
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this.render = function (src, options) {
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return new Promise(function (resolve, reject) {
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try {
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resolve(render(instance, src, options));
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} catch (error) {
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reject(error);
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}
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});
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};
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};
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// https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding
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function b64EncodeUnicode(str) {
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return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function (match, p1) {
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return String.fromCharCode('0x' + p1);
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}));
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}
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function defaultScale() {
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if ('devicePixelRatio' in window && window.devicePixelRatio > 1) {
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return window.devicePixelRatio;
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} else {
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return 1;
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}
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}
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function svgXmlToImageElement(svgXml) {
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var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
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_ref$scale = _ref.scale,
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scale = _ref$scale === undefined ? defaultScale() : _ref$scale,
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_ref$mimeType = _ref.mimeType,
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mimeType = _ref$mimeType === undefined ? "image/png" : _ref$mimeType,
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_ref$quality = _ref.quality,
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quality = _ref$quality === undefined ? 1 : _ref$quality;
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return new Promise(function (resolve, reject) {
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var svgImage = new Image();
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svgImage.onload = function () {
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var canvas = document.createElement('canvas');
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canvas.width = svgImage.width * scale;
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canvas.height = svgImage.height * scale;
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var context = canvas.getContext("2d");
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context.drawImage(svgImage, 0, 0, canvas.width, canvas.height);
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canvas.toBlob(function (blob) {
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var image = new Image();
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image.src = URL.createObjectURL(blob);
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image.width = svgImage.width;
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image.height = svgImage.height;
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resolve(image);
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}, mimeType, quality);
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};
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svgImage.onerror = function (e) {
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var error;
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if ('error' in e) {
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error = e.error;
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} else {
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error = new Error('Error loading SVG');
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}
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reject(error);
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};
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svgImage.src = 'data:image/svg+xml;base64,' + b64EncodeUnicode(svgXml);
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});
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}
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function svgXmlToImageElementFabric(svgXml) {
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var _ref2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
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_ref2$scale = _ref2.scale,
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scale = _ref2$scale === undefined ? defaultScale() : _ref2$scale,
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_ref2$mimeType = _ref2.mimeType,
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mimeType = _ref2$mimeType === undefined ? 'image/png' : _ref2$mimeType,
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_ref2$quality = _ref2.quality,
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quality = _ref2$quality === undefined ? 1 : _ref2$quality;
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var multiplier = scale;
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var format = void 0;
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if (mimeType == 'image/jpeg') {
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format = 'jpeg';
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} else if (mimeType == 'image/png') {
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format = 'png';
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}
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return new Promise(function (resolve, reject) {
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fabric.loadSVGFromString(svgXml, function (objects, options) {
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// If there's something wrong with the SVG, Fabric may return an empty array of objects. Graphviz appears to give us at least one <g> element back even given an empty graph, so we will assume an error in this case.
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if (objects.length == 0) {
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reject(new Error('Error loading SVG with Fabric'));
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}
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var element = document.createElement("canvas");
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element.width = options.width;
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element.height = options.height;
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var canvas = new fabric.Canvas(element, { enableRetinaScaling: false });
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var obj = fabric.util.groupSVGElements(objects, options);
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canvas.add(obj).renderAll();
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var image = new Image();
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image.src = canvas.toDataURL({ format: format, multiplier: multiplier, quality: quality });
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image.width = options.width;
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image.height = options.height;
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resolve(image);
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});
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});
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}
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var Viz = function () {
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function Viz() {
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var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
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workerURL = _ref3.workerURL,
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worker = _ref3.worker,
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Module = _ref3.Module,
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render = _ref3.render;
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classCallCheck(this, Viz);
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if (typeof workerURL !== 'undefined') {
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this.wrapper = new WorkerWrapper(new Worker(workerURL));
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} else if (typeof worker !== 'undefined') {
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this.wrapper = new WorkerWrapper(worker);
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} else if (typeof Module !== 'undefined' && typeof render !== 'undefined') {
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this.wrapper = new ModuleWrapper(Module, render);
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} else if (typeof Viz.Module !== 'undefined' && typeof Viz.render !== 'undefined') {
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this.wrapper = new ModuleWrapper(Viz.Module, Viz.render);
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} else {
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throw new Error('Must specify workerURL or worker option, Module and render options, or include one of full.render.js or lite.render.js after viz.js.');
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}
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}
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createClass(Viz, [{
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key: 'renderString',
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value: function renderString(src) {
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var _ref4 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
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_ref4$format = _ref4.format,
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format = _ref4$format === undefined ? 'svg' : _ref4$format,
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_ref4$engine = _ref4.engine,
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engine = _ref4$engine === undefined ? 'dot' : _ref4$engine,
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_ref4$files = _ref4.files,
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files = _ref4$files === undefined ? [] : _ref4$files,
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_ref4$images = _ref4.images,
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images = _ref4$images === undefined ? [] : _ref4$images,
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_ref4$yInvert = _ref4.yInvert,
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yInvert = _ref4$yInvert === undefined ? false : _ref4$yInvert,
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_ref4$nop = _ref4.nop,
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nop = _ref4$nop === undefined ? 0 : _ref4$nop;
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for (var i = 0; i < images.length; i++) {
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files.push({
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path: images[i].path,
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data: '<?xml version="1.0" encoding="UTF-8" standalone="no"?>\n<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n<svg width="' + images[i].width + '" height="' + images[i].height + '"></svg>'
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});
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}
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return this.wrapper.render(src, { format: format, engine: engine, files: files, images: images, yInvert: yInvert, nop: nop });
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}
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}, {
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key: 'renderSVGElement',
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value: function renderSVGElement(src) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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return this.renderString(src, _extends({}, options, { format: 'svg' })).then(function (str) {
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var parser = new DOMParser();
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return parser.parseFromString(str, 'image/svg+xml').documentElement;
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});
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}
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}, {
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key: 'renderImageElement',
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value: function renderImageElement(src) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var scale = options.scale,
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mimeType = options.mimeType,
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quality = options.quality;
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return this.renderString(src, _extends({}, options, { format: 'svg' })).then(function (str) {
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if ((typeof fabric === 'undefined' ? 'undefined' : _typeof(fabric)) === "object" && fabric.loadSVGFromString) {
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return svgXmlToImageElementFabric(str, { scale: scale, mimeType: mimeType, quality: quality });
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} else {
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return svgXmlToImageElement(str, { scale: scale, mimeType: mimeType, quality: quality });
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}
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});
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}
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}, {
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key: 'renderJSONObject',
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value: function renderJSONObject(src) {
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var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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var format = options.format;
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if (format !== 'json' || format !== 'json0') {
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format = 'json';
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}
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return this.renderString(src, _extends({}, options, { format: format })).then(function (str) {
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return JSON.parse(str);
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});
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}
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}]);
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return Viz;
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}();
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return Viz;
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})));
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