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681 lines
27 KiB
JavaScript
681 lines
27 KiB
JavaScript
2 months ago
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/**
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* @license Highcharts JS v6.0.4 (2017-12-15)
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* Client side exporting module
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*
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* (c) 2015 Torstein Honsi / Oystein Moseng
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*
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* License: www.highcharts.com/license
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*/
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'use strict';
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(function(factory) {
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if (typeof module === 'object' && module.exports) {
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module.exports = factory;
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} else {
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factory(Highcharts);
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}
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}(function(Highcharts) {
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(function(Highcharts) {
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/**
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* Client side exporting module
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*
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* (c) 2015 Torstein Honsi / Oystein Moseng
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*
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* License: www.highcharts.com/license
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*/
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/* global MSBlobBuilder */
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var merge = Highcharts.merge,
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win = Highcharts.win,
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nav = win.navigator,
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doc = win.document,
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each = Highcharts.each,
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domurl = win.URL || win.webkitURL || win,
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isMSBrowser = /Edge\/|Trident\/|MSIE /.test(nav.userAgent),
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isEdgeBrowser = /Edge\/\d+/.test(nav.userAgent),
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// Milliseconds to defer image load event handlers to offset IE bug
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loadEventDeferDelay = isMSBrowser ? 150 : 0;
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// Dummy object so we can reuse our canvas-tools.js without errors
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Highcharts.CanVGRenderer = {};
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/**
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* Downloads a script and executes a callback when done.
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* @param {String} scriptLocation
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* @param {Function} callback
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*/
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function getScript(scriptLocation, callback) {
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var head = doc.getElementsByTagName('head')[0],
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script = doc.createElement('script');
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script.type = 'text/javascript';
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script.src = scriptLocation;
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script.onload = callback;
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script.onerror = function() {
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Highcharts.error('Error loading script ' + scriptLocation);
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};
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head.appendChild(script);
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}
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// Convert dataURL to Blob if supported, otherwise returns undefined
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Highcharts.dataURLtoBlob = function(dataURL) {
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if (
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win.atob &&
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win.ArrayBuffer &&
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win.Uint8Array &&
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win.Blob &&
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domurl.createObjectURL
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) {
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// Try to convert data URL to Blob
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var parts = dataURL.match(/data:([^;]*)(;base64)?,([0-9A-Za-z+/]+)/),
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binStr = win.atob(parts[3]), // Assume base64 encoding
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buf = new win.ArrayBuffer(binStr.length),
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binary = new win.Uint8Array(buf),
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blob;
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for (var i = 0; i < binary.length; ++i) {
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binary[i] = binStr.charCodeAt(i);
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}
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blob = new win.Blob([binary], {
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'type': parts[1]
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});
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return domurl.createObjectURL(blob);
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}
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};
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// Download contents by dataURL/blob
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Highcharts.downloadURL = function(dataURL, filename) {
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var a = doc.createElement('a'),
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windowRef;
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// IE specific blob implementation
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// Don't use for normal dataURLs
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if (
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typeof dataURL !== 'string' &&
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!(dataURL instanceof String) &&
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nav.msSaveOrOpenBlob
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) {
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nav.msSaveOrOpenBlob(dataURL, filename);
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return;
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}
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// Some browsers have limitations for data URL lengths. Try to convert to
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// Blob or fall back. Edge always needs that blob.
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if (isEdgeBrowser || dataURL.length > 2000000) {
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dataURL = Highcharts.dataURLtoBlob(dataURL);
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if (!dataURL) {
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throw 'Data URL length limit reached';
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}
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}
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// Try HTML5 download attr if supported
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if (a.download !== undefined) {
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a.href = dataURL;
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a.download = filename; // HTML5 download attribute
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doc.body.appendChild(a);
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a.click();
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doc.body.removeChild(a);
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} else {
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// No download attr, just opening data URI
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try {
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windowRef = win.open(dataURL, 'chart');
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if (windowRef === undefined || windowRef === null) {
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throw 'Failed to open window';
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}
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} catch (e) {
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// window.open failed, trying location.href
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win.location.href = dataURL;
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}
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}
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};
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// Get blob URL from SVG code. Falls back to normal data URI.
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Highcharts.svgToDataUrl = function(svg) {
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// Webkit and not chrome
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var webKit = (
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nav.userAgent.indexOf('WebKit') > -1 &&
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nav.userAgent.indexOf('Chrome') < 0
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);
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try {
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// Safari requires data URI since it doesn't allow navigation to blob
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// URLs. Firefox has an issue with Blobs and internal references,
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// leading to gradients not working using Blobs (#4550)
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if (!webKit && nav.userAgent.toLowerCase().indexOf('firefox') < 0) {
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return domurl.createObjectURL(new win.Blob([svg], {
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type: 'image/svg+xml;charset-utf-16'
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}));
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}
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} catch (e) {
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// Ignore
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}
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return 'data:image/svg+xml;charset=UTF-8,' + encodeURIComponent(svg);
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};
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// Get data:URL from image URL
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// Pass in callbacks to handle results. finallyCallback is always called at the
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// end of the process. Supplying this callback is optional. All callbacks
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// receive four arguments: imageURL, imageType, callbackArgs and scale.
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// callbackArgs is used only by callbacks and can contain whatever.
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Highcharts.imageToDataUrl = function(
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imageURL,
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imageType,
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callbackArgs,
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scale,
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successCallback,
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taintedCallback,
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noCanvasSupportCallback,
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failedLoadCallback,
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finallyCallback
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) {
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var img = new win.Image(),
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taintedHandler,
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loadHandler = function() {
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setTimeout(function() {
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var canvas = doc.createElement('canvas'),
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ctx = canvas.getContext && canvas.getContext('2d'),
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dataURL;
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try {
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if (!ctx) {
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noCanvasSupportCallback(
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imageURL,
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imageType,
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callbackArgs,
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scale
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);
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} else {
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canvas.height = img.height * scale;
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canvas.width = img.width * scale;
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ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
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// Now we try to get the contents of the canvas.
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try {
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dataURL = canvas.toDataURL(imageType);
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successCallback(
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dataURL,
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imageType,
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callbackArgs,
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scale
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);
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} catch (e) {
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taintedHandler(
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imageURL,
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imageType,
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callbackArgs,
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scale
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);
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}
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}
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} finally {
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if (finallyCallback) {
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finallyCallback(
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imageURL,
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imageType,
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callbackArgs,
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scale
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);
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}
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}
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// IE bug where image is not always ready despite calling load
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// event.
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}, loadEventDeferDelay);
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},
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// Image load failed (e.g. invalid URL)
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errorHandler = function() {
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failedLoadCallback(imageURL, imageType, callbackArgs, scale);
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if (finallyCallback) {
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finallyCallback(imageURL, imageType, callbackArgs, scale);
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}
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};
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// This is called on load if the image drawing to canvas failed with a
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// security error. We retry the drawing with crossOrigin set to Anonymous.
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taintedHandler = function() {
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img = new win.Image();
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taintedHandler = taintedCallback;
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// Must be set prior to loading image source
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img.crossOrigin = 'Anonymous';
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img.onload = loadHandler;
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img.onerror = errorHandler;
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img.src = imageURL;
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};
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img.onload = loadHandler;
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img.onerror = errorHandler;
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img.src = imageURL;
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};
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/**
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* Get data URL to an image of an SVG and call download on it
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*
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* options object:
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* - filename: Name of resulting downloaded file without extension
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* - type: File type of resulting download
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* - scale: Scaling factor of downloaded image compared to source
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* - libURL: URL pointing to location of dependency scripts to download on
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* demand
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*/
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Highcharts.downloadSVGLocal = function(
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svg,
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options,
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failCallback,
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successCallback
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) {
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var svgurl,
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blob,
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objectURLRevoke = true,
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finallyHandler,
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libURL = options.libURL || Highcharts.getOptions().exporting.libURL,
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dummySVGContainer = doc.createElement('div'),
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imageType = options.type || 'image/png',
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filename = (
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(options.filename || 'chart') +
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'.' +
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(imageType === 'image/svg+xml' ? 'svg' : imageType.split('/')[1])
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),
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scale = options.scale || 1;
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// Allow libURL to end with or without fordward slash
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libURL = libURL.slice(-1) !== '/' ? libURL + '/' : libURL;
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function svgToPdf(svgElement, margin) {
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var width = svgElement.width.baseVal.value + 2 * margin,
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height = svgElement.height.baseVal.value + 2 * margin,
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pdf = new win.jsPDF( // eslint-disable-line new-cap
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'l',
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'pt', [width, height]
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);
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// Workaround for #7090, hidden elements were drawn anyway. It comes
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// down to https://github.com/yWorks/svg2pdf.js/issues/28. Check this
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// later.
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each(
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svgElement.querySelectorAll('*[visibility="hidden"]'),
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function(node) {
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node.parentNode.removeChild(node);
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}
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);
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win.svg2pdf(svgElement, pdf, {
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removeInvalid: true
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});
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return pdf.output('datauristring');
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}
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function downloadPDF() {
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dummySVGContainer.innerHTML = svg;
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var textElements = dummySVGContainer.getElementsByTagName('text'),
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titleElements,
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svgData,
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svgElementStyle = dummySVGContainer
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.getElementsByTagName('svg')[0].style;
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// Workaround for the text styling. Making sure it does pick up the root
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// element
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each(textElements, function(el) {
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// Workaround for the text styling. making sure it does pick up the
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// root element
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each(['font-family', 'font-size'], function(property) {
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if (!el.style[property] && svgElementStyle[property]) {
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el.style[property] = svgElementStyle[property];
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}
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});
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el.style['font-family'] = (
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el.style['font-family'] &&
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el.style['font-family'].split(' ').splice(-1)
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);
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// Workaround for plotband with width, removing title from text
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// nodes
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titleElements = el.getElementsByTagName('title');
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each(titleElements, function(titleElement) {
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el.removeChild(titleElement);
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});
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});
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svgData = svgToPdf(dummySVGContainer.firstChild, 0);
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try {
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Highcharts.downloadURL(svgData, filename);
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if (successCallback) {
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successCallback();
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}
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} catch (e) {
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failCallback();
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}
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}
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// Initiate download depending on file type
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if (imageType === 'image/svg+xml') {
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// SVG download. In this case, we want to use Microsoft specific Blob if
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// available
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try {
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if (nav.msSaveOrOpenBlob) {
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blob = new MSBlobBuilder();
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blob.append(svg);
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svgurl = blob.getBlob('image/svg+xml');
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} else {
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svgurl = Highcharts.svgToDataUrl(svg);
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}
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Highcharts.downloadURL(svgurl, filename);
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if (successCallback) {
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successCallback();
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}
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} catch (e) {
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failCallback();
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}
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} else if (imageType === 'application/pdf') {
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if (win.jsPDF && win.svg2pdf) {
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downloadPDF();
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} else {
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// Must load pdf libraries first. // Don't destroy the object URL
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// yet since we are doing things asynchronously. A cleaner solution
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// would be nice, but this will do for now.
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objectURLRevoke = true;
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getScript(libURL + 'jspdf.js', function() {
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getScript(libURL + 'svg2pdf.js', function() {
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downloadPDF();
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});
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});
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}
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||
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} else {
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// PNG/JPEG download - create bitmap from SVG
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svgurl = Highcharts.svgToDataUrl(svg);
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finallyHandler = function() {
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try {
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domurl.revokeObjectURL(svgurl);
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||
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} catch (e) {
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||
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// Ignore
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||
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}
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||
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};
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||
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// First, try to get PNG by rendering on canvas
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||
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Highcharts.imageToDataUrl(
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svgurl,
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||
|
|
imageType, { /* args */ },
|
||
|
|
scale,
|
||
|
|
function(imageURL) {
|
||
|
|
// Success
|
||
|
|
try {
|
||
|
|
Highcharts.downloadURL(imageURL, filename);
|
||
|
|
if (successCallback) {
|
||
|
|
successCallback();
|
||
|
|
}
|
||
|
|
} catch (e) {
|
||
|
|
failCallback();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
function() {
|
||
|
|
// Failed due to tainted canvas
|
||
|
|
// Create new and untainted canvas
|
||
|
|
var canvas = doc.createElement('canvas'),
|
||
|
|
ctx = canvas.getContext('2d'),
|
||
|
|
imageWidth = svg.match(
|
||
|
|
/^<svg[^>]*width\s*=\s*\"?(\d+)\"?[^>]*>/
|
||
|
|
)[1] * scale,
|
||
|
|
imageHeight = svg.match(
|
||
|
|
/^<svg[^>]*height\s*=\s*\"?(\d+)\"?[^>]*>/
|
||
|
|
)[1] * scale,
|
||
|
|
downloadWithCanVG = function() {
|
||
|
|
ctx.drawSvg(svg, 0, 0, imageWidth, imageHeight);
|
||
|
|
try {
|
||
|
|
Highcharts.downloadURL(
|
||
|
|
nav.msSaveOrOpenBlob ?
|
||
|
|
canvas.msToBlob() :
|
||
|
|
canvas.toDataURL(imageType),
|
||
|
|
filename
|
||
|
|
);
|
||
|
|
if (successCallback) {
|
||
|
|
successCallback();
|
||
|
|
}
|
||
|
|
} catch (e) {
|
||
|
|
failCallback();
|
||
|
|
} finally {
|
||
|
|
finallyHandler();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
canvas.width = imageWidth;
|
||
|
|
canvas.height = imageHeight;
|
||
|
|
if (win.canvg) {
|
||
|
|
// Use preloaded canvg
|
||
|
|
downloadWithCanVG();
|
||
|
|
} else {
|
||
|
|
// Must load canVG first. // Don't destroy the object URL
|
||
|
|
// yet since we are doing things asynchronously. A cleaner
|
||
|
|
// solution would be nice, but this will do for now.
|
||
|
|
objectURLRevoke = true;
|
||
|
|
// Get RGBColor.js first, then canvg
|
||
|
|
getScript(libURL + 'rgbcolor.js', function() {
|
||
|
|
getScript(libURL + 'canvg.js', function() {
|
||
|
|
downloadWithCanVG();
|
||
|
|
});
|
||
|
|
});
|
||
|
|
}
|
||
|
|
},
|
||
|
|
// No canvas support
|
||
|
|
failCallback,
|
||
|
|
// Failed to load image
|
||
|
|
failCallback,
|
||
|
|
// Finally
|
||
|
|
function() {
|
||
|
|
if (objectURLRevoke) {
|
||
|
|
finallyHandler();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Get SVG of chart prepared for client side export. This converts embedded
|
||
|
|
// images in the SVG to data URIs. The options and chartOptions arguments are
|
||
|
|
// passed to the getSVGForExport function.
|
||
|
|
Highcharts.Chart.prototype.getSVGForLocalExport = function(
|
||
|
|
options,
|
||
|
|
chartOptions,
|
||
|
|
failCallback,
|
||
|
|
successCallback
|
||
|
|
) {
|
||
|
|
var chart = this,
|
||
|
|
images,
|
||
|
|
imagesEmbedded = 0,
|
||
|
|
chartCopyContainer,
|
||
|
|
chartCopyOptions,
|
||
|
|
el,
|
||
|
|
i,
|
||
|
|
l,
|
||
|
|
// After grabbing the SVG of the chart's copy container we need to do
|
||
|
|
// sanitation on the SVG
|
||
|
|
sanitize = function(svg) {
|
||
|
|
return chart.sanitizeSVG(svg, chartCopyOptions);
|
||
|
|
},
|
||
|
|
// Success handler, we converted image to base64!
|
||
|
|
embeddedSuccess = function(imageURL, imageType, callbackArgs) {
|
||
|
|
++imagesEmbedded;
|
||
|
|
|
||
|
|
// Change image href in chart copy
|
||
|
|
callbackArgs.imageElement.setAttributeNS(
|
||
|
|
'http://www.w3.org/1999/xlink',
|
||
|
|
'href',
|
||
|
|
imageURL
|
||
|
|
);
|
||
|
|
|
||
|
|
// When done with last image we have our SVG
|
||
|
|
if (imagesEmbedded === images.length) {
|
||
|
|
successCallback(sanitize(chartCopyContainer.innerHTML));
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Hook into getSVG to get a copy of the chart copy's container
|
||
|
|
Highcharts.wrap(
|
||
|
|
Highcharts.Chart.prototype,
|
||
|
|
'getChartHTML',
|
||
|
|
function(proceed) {
|
||
|
|
var ret = proceed.apply(
|
||
|
|
this,
|
||
|
|
Array.prototype.slice.call(arguments, 1)
|
||
|
|
);
|
||
|
|
chartCopyOptions = this.options;
|
||
|
|
chartCopyContainer = this.container.cloneNode(true);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
|
||
|
|
// Trigger hook to get chart copy
|
||
|
|
chart.getSVGForExport(options, chartOptions);
|
||
|
|
images = chartCopyContainer.getElementsByTagName('image');
|
||
|
|
|
||
|
|
try {
|
||
|
|
// If there are no images to embed, the SVG is okay now.
|
||
|
|
if (!images.length) {
|
||
|
|
// Use SVG of chart copy
|
||
|
|
successCallback(sanitize(chartCopyContainer.innerHTML));
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Go through the images we want to embed
|
||
|
|
for (i = 0, l = images.length; i < l; ++i) {
|
||
|
|
el = images[i];
|
||
|
|
Highcharts.imageToDataUrl(el.getAttributeNS(
|
||
|
|
'http://www.w3.org/1999/xlink',
|
||
|
|
'href'
|
||
|
|
), 'image/png', {
|
||
|
|
imageElement: el
|
||
|
|
}, options.scale,
|
||
|
|
embeddedSuccess,
|
||
|
|
// Tainted canvas
|
||
|
|
failCallback,
|
||
|
|
// No canvas support
|
||
|
|
failCallback,
|
||
|
|
// Failed to load source
|
||
|
|
failCallback
|
||
|
|
);
|
||
|
|
}
|
||
|
|
} catch (e) {
|
||
|
|
failCallback();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Exporting and offline-exporting modules required. Export a chart to an image
|
||
|
|
* locally in the user's browser.
|
||
|
|
*
|
||
|
|
* @param {Object} exportingOptions
|
||
|
|
* Exporting options, the same as in {@link
|
||
|
|
* Highcharts.Chart#exportChart}.
|
||
|
|
* @param {Options} chartOptions
|
||
|
|
* Additional chart options for the exported chart. For example a
|
||
|
|
* different background color can be added here, or `dataLabels`
|
||
|
|
* for export only.
|
||
|
|
*/
|
||
|
|
Highcharts.Chart.prototype.exportChartLocal = function(
|
||
|
|
exportingOptions,
|
||
|
|
chartOptions
|
||
|
|
) {
|
||
|
|
var chart = this,
|
||
|
|
options = Highcharts.merge(chart.options.exporting, exportingOptions),
|
||
|
|
fallbackToExportServer = function() {
|
||
|
|
if (options.fallbackToExportServer === false) {
|
||
|
|
if (options.error) {
|
||
|
|
options.error(options);
|
||
|
|
} else {
|
||
|
|
throw 'Fallback to export server disabled';
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
chart.exportChart(options);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
svgSuccess = function(svg) {
|
||
|
|
// If SVG contains foreignObjects all exports except SVG will fail,
|
||
|
|
// as both CanVG and svg2pdf choke on this. Gracefully fall back.
|
||
|
|
if (
|
||
|
|
svg.indexOf('<foreignObject') > -1 &&
|
||
|
|
options.type !== 'image/svg+xml'
|
||
|
|
) {
|
||
|
|
fallbackToExportServer();
|
||
|
|
} else {
|
||
|
|
Highcharts.downloadSVGLocal(
|
||
|
|
svg,
|
||
|
|
options,
|
||
|
|
fallbackToExportServer
|
||
|
|
);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// If we are on IE and in styled mode, add a whitelist to the renderer for
|
||
|
|
// inline styles that we want to pass through. There are so many styles by
|
||
|
|
// default in IE that we don't want to blacklist them all.
|
||
|
|
|
||
|
|
|
||
|
|
// Always fall back on:
|
||
|
|
// - MS browsers: Embedded images JPEG/PNG, or any PDF
|
||
|
|
// - Embedded images and PDF
|
||
|
|
if (
|
||
|
|
(
|
||
|
|
isMSBrowser &&
|
||
|
|
(
|
||
|
|
options.type === 'application/pdf' ||
|
||
|
|
chart.container.getElementsByTagName('image').length &&
|
||
|
|
options.type !== 'image/svg+xml'
|
||
|
|
)
|
||
|
|
) || (
|
||
|
|
options.type === 'application/pdf' &&
|
||
|
|
chart.container.getElementsByTagName('image').length
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
fallbackToExportServer();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
chart.getSVGForLocalExport(
|
||
|
|
options,
|
||
|
|
chartOptions,
|
||
|
|
fallbackToExportServer,
|
||
|
|
svgSuccess
|
||
|
|
);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Extend the default options to use the local exporter logic
|
||
|
|
merge(true, Highcharts.getOptions().exporting, {
|
||
|
|
libURL: 'https://code.highcharts.com/6.0.4/lib/',
|
||
|
|
|
||
|
|
// When offline-exporting is loaded, redefine the menu item definitions
|
||
|
|
// related to download.
|
||
|
|
menuItemDefinitions: {
|
||
|
|
downloadPNG: {
|
||
|
|
textKey: 'downloadPNG',
|
||
|
|
onclick: function() {
|
||
|
|
this.exportChartLocal();
|
||
|
|
}
|
||
|
|
},
|
||
|
|
downloadJPEG: {
|
||
|
|
textKey: 'downloadJPEG',
|
||
|
|
onclick: function() {
|
||
|
|
this.exportChartLocal({
|
||
|
|
type: 'image/jpeg'
|
||
|
|
});
|
||
|
|
}
|
||
|
|
},
|
||
|
|
downloadSVG: {
|
||
|
|
textKey: 'downloadSVG',
|
||
|
|
onclick: function() {
|
||
|
|
this.exportChartLocal({
|
||
|
|
type: 'image/svg+xml'
|
||
|
|
});
|
||
|
|
}
|
||
|
|
},
|
||
|
|
downloadPDF: {
|
||
|
|
textKey: 'downloadPDF',
|
||
|
|
onclick: function() {
|
||
|
|
this.exportChartLocal({
|
||
|
|
type: 'application/pdf'
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
}(Highcharts));
|
||
|
|
}));
|