458 lines
20 KiB
JavaScript
Executable File
458 lines
20 KiB
JavaScript
Executable File
/**
|
|
* @license Highcharts JS v5.0.2 (2016-10-26)
|
|
* Client side exporting module
|
|
*
|
|
* (c) 2015 Torstein Honsi / Oystein Moseng
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*/
|
|
(function(factory) {
|
|
if (typeof module === 'object' && module.exports) {
|
|
module.exports = factory;
|
|
} else {
|
|
factory(Highcharts);
|
|
}
|
|
}(function(Highcharts) {
|
|
(function(Highcharts) {
|
|
/**
|
|
* Client side exporting module
|
|
*
|
|
* (c) 2015 Torstein Honsi / Oystein Moseng
|
|
*
|
|
* License: www.highcharts.com/license
|
|
*/
|
|
|
|
'use strict';
|
|
/*global MSBlobBuilder */
|
|
|
|
var merge = Highcharts.merge,
|
|
win = Highcharts.win,
|
|
nav = win.navigator,
|
|
doc = win.document,
|
|
each = Highcharts.each,
|
|
domurl = win.URL || win.webkitURL || win,
|
|
isMSBrowser = /Edge\/|Trident\/|MSIE /.test(nav.userAgent),
|
|
loadEventDeferDelay = isMSBrowser ? 150 : 0; // Milliseconds to defer image load event handlers to offset IE bug
|
|
|
|
// Dummy object so we can reuse our canvas-tools.js without errors
|
|
Highcharts.CanVGRenderer = {};
|
|
|
|
|
|
/**
|
|
* Downloads a script and executes a callback when done.
|
|
* @param {String} scriptLocation
|
|
* @param {Function} callback
|
|
*/
|
|
function getScript(scriptLocation, callback) {
|
|
var head = doc.getElementsByTagName('head')[0],
|
|
script = doc.createElement('script');
|
|
|
|
script.type = 'text/javascript';
|
|
script.src = scriptLocation;
|
|
script.onload = callback;
|
|
script.onerror = function() {
|
|
console.error('Error loading script', scriptLocation); // eslint-disable-line no-console
|
|
};
|
|
|
|
head.appendChild(script);
|
|
}
|
|
|
|
// Download contents by dataURL/blob
|
|
Highcharts.downloadURL = function(dataURL, filename) {
|
|
var a = doc.createElement('a'),
|
|
windowRef;
|
|
|
|
// IE specific blob implementation
|
|
if (nav.msSaveOrOpenBlob) {
|
|
nav.msSaveOrOpenBlob(dataURL, filename);
|
|
return;
|
|
}
|
|
|
|
// Try HTML5 download attr if supported
|
|
if (a.download !== undefined) {
|
|
a.href = dataURL;
|
|
a.download = filename; // HTML5 download attribute
|
|
a.target = '_blank';
|
|
doc.body.appendChild(a);
|
|
a.click();
|
|
doc.body.removeChild(a);
|
|
} else {
|
|
// No download attr, just opening data URI
|
|
try {
|
|
windowRef = win.open(dataURL, 'chart');
|
|
if (windowRef === undefined || windowRef === null) {
|
|
throw 'Failed to open window';
|
|
}
|
|
} catch (e) {
|
|
// window.open failed, trying location.href
|
|
win.location.href = dataURL;
|
|
}
|
|
}
|
|
};
|
|
|
|
// Get blob URL from SVG code. Falls back to normal data URI.
|
|
Highcharts.svgToDataUrl = function(svg) {
|
|
var webKit = nav.userAgent.indexOf('WebKit') > -1 && nav.userAgent.indexOf('Chrome') < 0; // Webkit and not chrome
|
|
try {
|
|
// Safari requires data URI since it doesn't allow navigation to blob URLs
|
|
// Firefox has an issue with Blobs and internal references, leading to gradients not working using Blobs (#4550)
|
|
if (!webKit && nav.userAgent.toLowerCase().indexOf('firefox') < 0) {
|
|
return domurl.createObjectURL(new win.Blob([svg], {
|
|
type: 'image/svg+xml;charset-utf-16'
|
|
}));
|
|
}
|
|
} catch (e) {
|
|
// Ignore
|
|
}
|
|
return 'data:image/svg+xml;charset=UTF-8,' + encodeURIComponent(svg);
|
|
};
|
|
|
|
// Get data:URL from image URL
|
|
// Pass in callbacks to handle results. finallyCallback is always called at the end of the process. Supplying this callback is optional.
|
|
// All callbacks receive four arguments: imageURL, imageType, callbackArgs and scale. callbackArgs is used only by callbacks and can contain whatever.
|
|
Highcharts.imageToDataUrl = function(imageURL, imageType, callbackArgs, scale, successCallback, taintedCallback, noCanvasSupportCallback, failedLoadCallback, finallyCallback) {
|
|
var img = new win.Image(),
|
|
taintedHandler,
|
|
loadHandler = function() {
|
|
setTimeout(function() {
|
|
var canvas = doc.createElement('canvas'),
|
|
ctx = canvas.getContext && canvas.getContext('2d'),
|
|
dataURL;
|
|
try {
|
|
if (!ctx) {
|
|
noCanvasSupportCallback(imageURL, imageType, callbackArgs, scale);
|
|
} else {
|
|
canvas.height = img.height * scale;
|
|
canvas.width = img.width * scale;
|
|
ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
|
|
|
|
// Now we try to get the contents of the canvas.
|
|
try {
|
|
dataURL = canvas.toDataURL(imageType);
|
|
successCallback(dataURL, imageType, callbackArgs, scale);
|
|
} catch (e) {
|
|
taintedHandler(imageURL, imageType, callbackArgs, scale);
|
|
}
|
|
}
|
|
} finally {
|
|
if (finallyCallback) {
|
|
finallyCallback(imageURL, imageType, callbackArgs, scale);
|
|
}
|
|
}
|
|
}, loadEventDeferDelay); // IE bug where image is not always ready despite calling load event.
|
|
},
|
|
// Image load failed (e.g. invalid URL)
|
|
errorHandler = function() {
|
|
failedLoadCallback(imageURL, imageType, callbackArgs, scale);
|
|
if (finallyCallback) {
|
|
finallyCallback(imageURL, imageType, callbackArgs, scale);
|
|
}
|
|
};
|
|
|
|
// This is called on load if the image drawing to canvas failed with a security error.
|
|
// We retry the drawing with crossOrigin set to Anonymous.
|
|
taintedHandler = function() {
|
|
img = new win.Image();
|
|
taintedHandler = taintedCallback;
|
|
img.crossOrigin = 'Anonymous'; // Must be set prior to loading image source
|
|
img.onload = loadHandler;
|
|
img.onerror = errorHandler;
|
|
img.src = imageURL;
|
|
};
|
|
|
|
img.onload = loadHandler;
|
|
img.onerror = errorHandler;
|
|
img.src = imageURL;
|
|
};
|
|
|
|
/**
|
|
* Get data URL to an image of an SVG and call download on it
|
|
*
|
|
* options object:
|
|
* filename: Name of resulting downloaded file without extension
|
|
* type: File type of resulting download
|
|
* scale: Scaling factor of downloaded image compared to source
|
|
* libURL: URL pointing to location of dependency scripts to download on demand
|
|
*/
|
|
Highcharts.downloadSVGLocal = function(svg, options, failCallback, successCallback) {
|
|
var svgurl,
|
|
blob,
|
|
objectURLRevoke = true,
|
|
finallyHandler,
|
|
libURL = options.libURL || Highcharts.getOptions().exporting.libURL,
|
|
dummySVGContainer = doc.createElement('div'),
|
|
imageType = options.type || 'image/png',
|
|
filename = (options.filename || 'chart') + '.' + (imageType === 'image/svg+xml' ? 'svg' : imageType.split('/')[1]),
|
|
scale = options.scale || 1;
|
|
|
|
libURL = libURL.slice(-1) !== '/' ? libURL + '/' : libURL; // Allow libURL to end with or without fordward slash
|
|
|
|
function svgToPdf(svgElement, margin) {
|
|
var width = svgElement.width.baseVal.value + 2 * margin,
|
|
height = svgElement.height.baseVal.value + 2 * margin,
|
|
pdf = new win.jsPDF('l', 'pt', [width, height]); // eslint-disable-line new-cap
|
|
win.svgElementToPdf(svgElement, pdf, {
|
|
removeInvalid: true
|
|
});
|
|
return pdf.output('datauristring');
|
|
}
|
|
|
|
function downloadPDF() {
|
|
dummySVGContainer.innerHTML = svg;
|
|
var textElements = dummySVGContainer.getElementsByTagName('text'),
|
|
svgElementStyle = dummySVGContainer.getElementsByTagName('svg')[0].style;
|
|
// Workaround for the text styling. Making sure it does pick up the root element
|
|
each(textElements, function(el) {
|
|
each(['font-family', 'font-size'], function(property) {
|
|
if (!el.style[property] && svgElementStyle[property]) {
|
|
el.style[property] = svgElementStyle[property];
|
|
}
|
|
});
|
|
el.style['font-family'] = el.style['font-family'] && el.style['font-family'].split(' ').splice(-1);
|
|
});
|
|
var svgData = svgToPdf(dummySVGContainer.firstChild, 0);
|
|
Highcharts.downloadURL(svgData, filename);
|
|
if (successCallback) {
|
|
successCallback();
|
|
}
|
|
}
|
|
|
|
// Initiate download depending on file type
|
|
if (imageType === 'image/svg+xml') {
|
|
// SVG download. In this case, we want to use Microsoft specific Blob if available
|
|
try {
|
|
if (nav.msSaveOrOpenBlob) {
|
|
blob = new MSBlobBuilder();
|
|
blob.append(svg);
|
|
svgurl = blob.getBlob('image/svg+xml');
|
|
} else {
|
|
svgurl = Highcharts.svgToDataUrl(svg);
|
|
}
|
|
Highcharts.downloadURL(svgurl, filename);
|
|
if (successCallback) {
|
|
successCallback();
|
|
}
|
|
} catch (e) {
|
|
failCallback();
|
|
}
|
|
} else if (imageType === 'application/pdf') {
|
|
if (win.jsPDF && win.svgElementToPdf) {
|
|
downloadPDF();
|
|
} else {
|
|
// Must load pdf libraries first
|
|
objectURLRevoke = true; // 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.
|
|
getScript(libURL + 'jspdf.js', function() {
|
|
getScript(libURL + 'rgbcolor.js', function() {
|
|
getScript(libURL + 'svg2pdf.js', function() {
|
|
downloadPDF();
|
|
});
|
|
});
|
|
});
|
|
}
|
|
} else {
|
|
// PNG/JPEG download - create bitmap from SVG
|
|
|
|
svgurl = Highcharts.svgToDataUrl(svg);
|
|
finallyHandler = function() {
|
|
try {
|
|
domurl.revokeObjectURL(svgurl);
|
|
} catch (e) {
|
|
// Ignore
|
|
}
|
|
};
|
|
// First, try to get PNG by rendering on canvas
|
|
Highcharts.imageToDataUrl(svgurl, 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
|
|
objectURLRevoke = true; // 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.
|
|
getScript(libURL + 'rgbcolor.js', function() { // Get RGBColor.js first
|
|
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,
|
|
el,
|
|
i,
|
|
l,
|
|
// 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(chart.sanitizeSVG(chartCopyContainer.innerHTML));
|
|
}
|
|
};
|
|
|
|
// Hook into getSVG to get a copy of the chart copy's container
|
|
Highcharts.wrap(Highcharts.Chart.prototype, 'getChartHTML', function(proceed) {
|
|
chartCopyContainer = this.container.cloneNode(true);
|
|
return proceed.apply(this, Array.prototype.slice.call(arguments, 1));
|
|
});
|
|
|
|
// 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) {
|
|
successCallback(chart.sanitizeSVG(chartCopyContainer.innerHTML)); // Use SVG of chart copy
|
|
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();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Add a new method to the Chart object to perform a local download
|
|
*/
|
|
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();
|
|
} else {
|
|
throw 'Fallback to export server disabled';
|
|
}
|
|
} else {
|
|
chart.exportChart(options);
|
|
}
|
|
},
|
|
svgSuccess = function(svg) {
|
|
Highcharts.downloadSVGLocal(svg, options, fallbackToExportServer);
|
|
};
|
|
|
|
// If we have embedded images and are exporting to JPEG/PNG, Microsoft browsers won't handle it, so fall back
|
|
if ((isMSBrowser && options.imageType !== 'image/svg+xml' || options.imageType !== '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: 'http://code.highcharts.com/5.0.2/lib/',
|
|
buttons: {
|
|
contextButton: {
|
|
menuItems: [{
|
|
textKey: 'printChart',
|
|
onclick: function() {
|
|
this.print();
|
|
}
|
|
}, {
|
|
separator: true
|
|
}, {
|
|
textKey: 'downloadPNG',
|
|
onclick: function() {
|
|
this.exportChartLocal();
|
|
}
|
|
}, {
|
|
textKey: 'downloadJPEG',
|
|
onclick: function() {
|
|
this.exportChartLocal({
|
|
type: 'image/jpeg'
|
|
});
|
|
}
|
|
}, {
|
|
textKey: 'downloadSVG',
|
|
onclick: function() {
|
|
this.exportChartLocal({
|
|
type: 'image/svg+xml'
|
|
});
|
|
}
|
|
}, {
|
|
textKey: 'downloadPDF',
|
|
onclick: function() {
|
|
this.exportChartLocal({
|
|
type: 'application/pdf'
|
|
});
|
|
}
|
|
}]
|
|
}
|
|
}
|
|
});
|
|
|
|
}(Highcharts));
|
|
}));
|