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dd-dragimage-canvas.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<title>HTML5 Fundamentals</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/png" href="img/favicon.png">
<link rel="stylesheet" href="css/bootstrap.css" type="text/css" />
<link rel="stylesheet" href="css/site.css" type="text/css" />
<link rel="stylesheet" href="js/highlight/styles/github.css" />
<script src="js/modernizr.min.js" type="text/javascript"></script>
<script src="js/jquery.min.js" type="text/javascript"></script>
<script src="js/bootstrap.js" type="text/javascript"></script>
<script src="js/highlight/highlight.pack.js" type="text/javascript"></script>
<script src="js/app.js" type="text/javascript"></script>
</head>
<body>
<main>
<header>
<!-- Fixed navbar -->
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.html">
<img src="img/html5-fundamentals.png" title="HTML5 Fundamentals" class="hidden-sm" />
<img src="img/html5.png" title="HTML5 Fundamentals" class="visible-sm" />
</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a href="example.html" class="nav-link">Example</a></li>
<li class="separator visible-md visible-lg">|</li>
<li><a href="selection.html" class="nav-link">Selection</a></li>
<li>
<div class="dropdown">
<span class="nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Forms<span class="caret"></span>
</span>
<ul class="dropdown-menu" aria-labelledby="dLabel">
<li><a href="forms-markup.html">Forms</a></li>
<li><a href="forms-pseudo-classes.html">Pseudo Classes</a></li>
<li><a href="forms-validation.html">Native Validation</a></li>
<li><a href="forms-validation-custom.html">Custom Validation</a></li>
<li><a href="forms-validation-bootstrap.html">Bootstrap Module</a></li>
</ul>
</div>
</li>
<li>
<div class="dropdown">
<span class="nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Media<span class="caret"></span>
</span>
<ul class="dropdown-menu" aria-labelledby="dLabel">
<li><a href="media-basics.html">Basics</a></li>
<li><a href="media-scripted.html">Scripted Controls</a></li>
<li><a href="media-dynamic.html">Dynamic Load</a></li>
</ul>
</div>
</li>
<li>
<div class="dropdown">
<span class="nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Canvas<span class="caret"></span>
</span>
<ul class="dropdown-menu" aria-labelledby="dLabel">
<li><a href="canvas-basics.html">Basics</a></li>
<li><a href="canvas-manipulation.html">Manipulation</a></li>
<li><a href="canvas-clipping.html">Clipping</a></li>
<li><a href="canvas-charts.html">Charts</a></li>
<li><a href="canvas-video.html">Video</a></li>
</ul>
</div>
</li>
<li>
<div class="dropdown">
<span class="nav-link" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Drag & Drop<span class="caret"></span>
</span>
<ul class="dropdown-menu" aria-labelledby="dLabel">
<li><a href="dd-basics.html">Basics</a></li>
<li><a href="dd-effects.html">Effects</a></li>
<li><a href="dd-datatransfer.html">Data Transfer Types</a></li>
<li><a href="dd-files.html">Files</a></li>
</ul>
</div>
</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
</header>
<article id="content-container" class="container">
<div>
<!-- Nav tabs -->
<ul class="nav nav-tabs code-tabs" role="tablist">
<li role="presentation" class="active"><a href="#content-tab" aria-controls="content" role="tab" data-toggle="tab">Content</a></li>
<li role="presentation"><a href="#markup-tab" aria-controls="markup" role="tab" data-toggle="tab">Markup</a></li>
<li role="presentation"><a href="#css-tab" aria-controls="profile" role="tab" data-toggle="tab">CSS</a></li>
<li role="presentation"><a href="#javascript-tab" aria-controls="messages" role="tab" data-toggle="tab">JavaScript</a></li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<div role="tabpanel" class="tab-pane fade in active" id="content-tab">
<div id="example-container">
<!-- example markup -->
<div id="target" class="well">
<h4>Drop Here</h4>
</div>
<div id="source" draggable="true" class="well">
<h4>Drag Me</h4>
</div>
<img src="img/arrow-up.png" id="drag-image" class="none" />
<!-- /example markup -->
</div>
</div>
<div role="tabpanel" class="tab-pane fade" id="markup-tab">
<pre><code class="html hljs"><div id="target" class="well">
<h4>Drop Here</h4>
</div>
<div id="source" draggable="true" class="well">
<h4>Drag Me</h4>
</div>
<img src="img/arrow-up.png" id="drag-image" class="none" /></code></pre>
</div>
<div role="tabpanel" class="tab-pane fade" id="css-tab">
<pre><code class="css hljs">/* none */</code></pre>
</div>
<div role="tabpanel" class="tab-pane fade" id="javascript-tab">
<pre><code class="javascript hljs">var cancel = function(e) {
if (e.preventDefault) {
e.preventDefault();
}
if (e.stopPropagation) {
e.stopPropagation();
}
return false;
};
var dragStart = function(e) {
var
canvas = document.createElement('CANVAS'),
context = canvas.getContext('2d'),
img = document.getElementById('drag-image'),
dragImage = null;
context.drawImage(img, 0, 0);
dragImage = document.createElement('IMG');
dragImage.src = canvas.toDataURL();
e.dataTransfer.setDragImage(dragImage, -15, 15);
try {
e.dataTransfer.setData('text/plain', '');
} catch (e) {
e.dataTransfer.setData('Text', '');
}
};
var target = document.getElementById('target');
target.addEventListener('drop', cancel, false);
target.addEventListener('dragenter', cancel, false);
target.addEventListener('dragover', cancel, false);
var source = document.getElementById('source');
source.addEventListener('dragstart', dragStart, false);</code></pre>
</div>
<!-- -------------------------------------------------------------------- -->
<script>
var cancel = function(e) {
if (e.preventDefault) {
e.preventDefault();
}
if (e.stopPropagation) {
e.stopPropagation();
}
return false;
};
var dragStart = function(e) {
var
canvas = document.createElement('CANVAS'),
context = canvas.getContext('2d'),
img = document.getElementById('drag-image'),
dragImage = null;
context.drawImage(img, 0, 0);
dragImage = document.createElement('IMG');
dragImage.src = canvas.toDataURL();
e.dataTransfer.setDragImage(dragImage, -15, 15);
try {
e.dataTransfer.setData('text/plain', '');
} catch (e) {
e.dataTransfer.setData('Text', '');
}
};
var target = document.getElementById('target');
target.addEventListener('drop', cancel, false);
target.addEventListener('dragenter', cancel, false);
target.addEventListener('dragover', cancel, false);
var source = document.getElementById('source');
source.addEventListener('dragstart', dragStart, false);
</script>
</div>
</div>
</div>
</div>
</article>
<footer>
<div class="container">
<div class="row push-down-top-lg hidden-xs">
<div class="col-xs-offset-2 col-xs-3">
<img src="img/html5-fundamentals.png" title="HTML5 Fundamentals" />
<p>by <a href="http://craigshoemaker.net">Craig Shoemaker</a></p>
<p class="lead"><a href="http://twitter.com/craigshoemaker">Craig Shoemaker</a> is a <a href="http://www.infragistics.com">developer</a>,
<a href="http://www.pluralsight.com/author/craig-shoemaker">instructor</a>, <a href="http://code-magazine.com/SearchResults.aspx?search=craig%20shoemaker">writer</a>, <a href="http://polymorphicpodcast.com">podcaster</a>, and a man of many hats at <a href="http://www.infragistics.com">Infragistics</a>.</p>
<div class="push-down-top-md">
<a href="https://www.pluralsight.com/courses/html5-fundamentals"><img src="img/pluralsight.png" title="HTML5 Fundamentals" /></a>
</div>
</div>
<div class="col-xs-offset-1 col-xs-3">
<a href="http://craigshoemaker.net"><img src="img/craig-shoemaker.png" class="img-responsive" title="Craig Shoemaker" /></a>
</div>
</div>
</div>
</footer>
</main>
</body>
</html>