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fabric.Image.filters.Grayscale.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: Grayscale</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
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<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
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<link type="text/css" rel="stylesheet" href="../css/master.css">
</head>
<body>
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<div id="main">
<h1 class="page-title">Class: Grayscale</h1>
<section>
<header>
<h2>
<span class="ancestors"><a href="fabric.html">fabric</a><a href="fabric.Image.html">.Image</a><a href="fabric.Image.filters.html">.filters</a>.</span>Grayscale</h2>
</header>
<article>
<div class="container-overview">
<h4 class="name" id="Grayscale"><span class="type-signature"></span>new Grayscale<span class="signature">()</span><span class="type-signature"></span></h4>
<div class="description">
Grayscale image filter class
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19253">line 19253</a>
</li></ul></dd>
<dt class="tag-see">See:</dt>
<dd class="tag-see">
<ul>
<li><a href="http://fabricjs.com/image-filters">ImageFilters demo</a></li>
</ul>
</dd>
</dl>
<h5>Example</h5>
<pre class="prettyprint"><code>var filter = new fabric.Image.filters.Grayscale();
object.filters.push(filter);
object.applyFilters(canvas.renderAll.bind(canvas));</code></pre>
</div>
<h3 class="subsection-title">Extends</h3>
<ul>
<li><a href="fabric.Image.filters.BaseFilter.html">fabric.Image.filters.BaseFilter</a></li>
</ul>
<h3 class="subsection-title">Members</h3>
<h4 class="name" id="type"><span class="type-signature"></span>type<span class="type-signature"></span></h4>
<div class="description">
Filter type
</div>
<dl class="details">
<dt class="tag-overrides">Overrides:</dt>
<dd class="tag-overrides"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#type">fabric.Image.filters.BaseFilter#type</a>
</li></ul></dd>
<dt class="tag-default">Default Value:</dt>
<dd class="tag-default"><ul class="dummy">
<li>Grayscale</li>
</ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19271">line 19271</a>
</li></ul></dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<h4 class="name" id="applyTo"><span class="type-signature"></span>applyTo<span class="signature">(canvasEl)</span><span class="type-signature"></span></h4>
<div class="description">
Applies filter to canvas element
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>canvasEl</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="description last">Canvas element to apply filter to</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line19278">line 19278</a>
</li></ul></dd>
</dl>
<div class="inherited">
<h4 class="name" id="initialize"><span class="type-signature"></span>initialize<span class="signature">(options<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
<div class="description">
Constructor
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="description last">Options object</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#initialize">fabric.Image.filters.BaseFilter#initialize</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line18878">line 18878</a>
</li></ul></dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="setOptions"><span class="type-signature"></span>setOptions<span class="signature">(options<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
<div class="description">
Sets filter's properties from options
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>options</code></td>
<td class="type">
<span class="param-type">Object</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="description last">Options object</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#setOptions">fabric.Image.filters.BaseFilter#setOptions</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line18888">line 18888</a>
</li></ul></dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="toJSON"><span class="type-signature"></span>toJSON<span class="signature">()</span><span class="type-signature"> → {Object}</span></h4>
<div class="description">
Returns a JSON representation of an instance
</div>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#toJSON">fabric.Image.filters.BaseFilter#toJSON</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line18906">line 18906</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
JSON
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Object</span>
</dd>
</dl>
</div>
<div class="inherited">
<h4 class="name" id="toObject"><span class="type-signature"></span>toObject<span class="signature">()</span><span class="type-signature"> → {Object}</span></h4>
<div class="description">
Returns object representation of an instance
</div>
<dl class="details">
<dt class="inherited-from">Inherited From:</dt>
<dd class="inherited-from"><ul class="dummy"><li>
<a href="fabric.Image.filters.BaseFilter.html#toObject">fabric.Image.filters.BaseFilter#toObject</a>
</li></ul></dd>
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="fabric.js.html">fabric.js</a>, <a href="fabric.js.html#line18898">line 18898</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
Object representation of an instance
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Object</span>
</dd>
</dl>
</div>
</article>
</section>
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