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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>plugins/addhtml.js - Documentation</title>
<script src="scripts/prettify/prettify.js"></script>
<script src="scripts/prettify/lang-css.js"></script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
<div class="navicon"></div>
</label>
<label for="nav-trigger" class="overlay"></label>
<nav>
<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="jsPDF.html">jsPDF</a></li></ul><h3>Global</h3><ul><li><a href="global.html#addFont">addFont</a></li><li><a href="global.html#addHTML">addHTML</a></li><li><a href="global.html#addMetadata">addMetadata</a></li><li><a href="global.html#addPage">addPage</a></li><li><a href="global.html#autoPrint">autoPrint</a></li><li><a href="global.html#CapJoinStyles">CapJoinStyles</a></li><li><a href="global.html#circle">circle</a></li><li><a href="global.html#ellipse">ellipse</a></li><li><a href="global.html#getFontList">getFontList</a></li><li><a href="global.html#lines">lines</a></li><li><a href="global.html#lstext">lstext</a></li><li><a href="global.html#output">output</a></li><li><a href="global.html#rect">rect</a></li><li><a href="global.html#roundedRect">roundedRect</a></li><li><a href="global.html#save">save</a></li><li><a href="global.html#setDisplayMode">setDisplayMode</a></li><li><a href="global.html#setDrawColor">setDrawColor</a></li><li><a href="global.html#setFillColor">setFillColor</a></li><li><a href="global.html#setFont">setFont</a></li><li><a href="global.html#setFontSize">setFontSize</a></li><li><a href="global.html#setFontStyle">setFontStyle</a></li><li><a href="global.html#setLineCap">setLineCap</a></li><li><a href="global.html#setLineJoin">setLineJoin</a></li><li><a href="global.html#setLineWidth">setLineWidth</a></li><li><a href="global.html#setPage">setPage</a></li><li><a href="global.html#setProperties">setProperties</a></li><li><a href="global.html#setTextColor">setTextColor</a></li><li><a href="global.html#text">text</a></li><li><a href="global.html#triangle">triangle</a></li><li><a href="global.html#viewerPreferences">viewerPreferences</a></li></ul>
</nav>
<div id="main">
<h1 class="page-title">plugins/addhtml.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/**
* jsPDF addHTML PlugIn
* Copyright (c) 2014 Diego Casorran
*
* Licensed under the MIT License.
* http://opensource.org/licenses/mit-license
*/
(function (jsPDFAPI) {
'use strict';
/**
* Renders an HTML element to canvas object which added to the PDF
*
* This feature requires [html2canvas](https://github.com/niklasvh/html2canvas)
* or [rasterizeHTML](https://github.com/cburgmer/rasterizeHTML.js)
*
* @returns {jsPDF}
* @name addHTML
* @param element {Mixed} HTML Element, or anything supported by html2canvas.
* @param x {Number} starting X coordinate in jsPDF instance's declared units.
* @param y {Number} starting Y coordinate in jsPDF instance's declared units.
* @param options {Object} Additional options, check the code below.
* @param callback {Function} to call when the rendering has finished.
* NOTE: Every parameter is optional except 'element' and 'callback', in such
* case the image is positioned at 0x0 covering the whole PDF document
* size. Ie, to easily take screenshots of webpages saving them to PDF.
* @deprecated This is being replace with a vector-supporting API. See
* [this link](https://cdn.rawgit.com/MrRio/jsPDF/master/examples/html2pdf/showcase_supported_html.html)
*/
jsPDFAPI.addHTML = function (element, x, y, options, callback) {
'use strict';
if(typeof html2canvas === 'undefined' && typeof rasterizeHTML === 'undefined')
throw new Error('You need either '
+'https://github.com/niklasvh/html2canvas'
+' or https://github.com/cburgmer/rasterizeHTML.js');
if(typeof x !== 'number') {
options = x;
callback = y;
}
if(typeof options === 'function') {
callback = options;
options = null;
}
var I = this.internal, K = I.scaleFactor, W = I.pageSize.width, H = I.pageSize.height;
options = options || {};
options.onrendered = function(obj) {
x = parseInt(x) || 0;
y = parseInt(y) || 0;
var dim = options.dim || {};
var h = dim.h || 0;
var w = dim.w || Math.min(W,obj.width/K) - x;
var format = 'JPEG';
if(options.format)
format = options.format;
if(obj.height > H && options.pagesplit) {
var crop = function() {
var cy = 0;
while(1) {
var canvas = document.createElement('canvas');
canvas.width = Math.min(W*K,obj.width);
canvas.height = Math.min(H*K,obj.height-cy);
var ctx = canvas.getContext('2d');
ctx.drawImage(obj,0,cy,obj.width,canvas.height,0,0,canvas.width,canvas.height);
var args = [canvas, x,cy?0:y,canvas.width/K,canvas.height/K, format,null,'SLOW'];
this.addImage.apply(this, args);
cy += canvas.height;
if(cy >= obj.height) break;
this.addPage();
}
callback(w,cy,null,args);
}.bind(this);
if(obj.nodeName === 'CANVAS') {
var img = new Image();
img.onload = crop;
img.src = obj.toDataURL("image/png");
obj = img;
} else {
crop();
}
} else {
var alias = Math.random().toString(35);
var args = [obj, x,y,w,h, format,alias,'SLOW'];
this.addImage.apply(this, args);
callback(w,h,alias,args);
}
}.bind(this);
if(typeof html2canvas !== 'undefined' && !options.rstz) {
return html2canvas(element, options);
}
if(typeof rasterizeHTML !== 'undefined') {
var meth = 'drawDocument';
if(typeof element === 'string') {
meth = /^http/.test(element) ? 'drawURL' : 'drawHTML';
}
options.width = options.width || (W*K);
return rasterizeHTML[meth](element, void 0, options).then(function(r) {
options.onrendered(r.image);
}, function(e) {
callback(null,e);
});
}
return null;
};
})(jsPDF.API);
</code></pre>
</article>
</section>
</div>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Thu Sep 14 2017 20:43:25 GMT+0100 (BST) using the <a href="https://github.com/clenemt/docdash">docdash</a> theme.
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