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<html>
<head>
<!--
/**
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<title>RGraph: HTML5 Javascript charts library - Microsoft Internet Explorer support</title>
<meta name="keywords" content="rgraph html5 canvas docs msie" />
<meta name="description" content="RGraph: HTML5 Javascript charts library - Documentation about Microsoft Internet Explorer (MSIE) support" />
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<meta property="og:description" content="A charts library based on the HTML5 canvas tag" />
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<a href="../index.html">RGraph: HTML5 Javascript charts library</a>
>
<a href="index.html">Documentation</a>
>
MSIE support
</div>
<h1>RGraph: <span>HTML5 Javascript charts library</span> - Microsoft Internet Explorer (MSIE) support</h1>
<script>
if (RGraph.isIE8()) {
document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the charts, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag.</div>');
}
</script>
<p />
<div id="msie9">
<b>Microsoft Internet Explorer 9</b>
<p>
Starting from preview 3, Internet Explorer 9 has support for canvas, including the text and shadow APIs. It also
benefits from hardware acceleration, and quick rendering times.
</p>
</div>
<br />
<canvas id="myLine" width="600" height="250" style="float: right">[No canvas support]</canvas>
<script>
window.onload = function ()
{
var data1 = [4,3,6,8,4,2,1,4,9,8,7,8];
var data2 = [1,2,4,2,1,3,5,6,6,5,3,5];
// No "var" as the variable has to be global
line = new RGraph.Line('myLine', data1, data2);
line.Set('chart.title', 'Sales for Acme Inc. (context menu)');
line.Set('chart.title.vpos', 0.5);
line.Set('chart.colors', ['red', 'black']);
line.Set('chart.linewidth', 5);
// Odd, but this seems to fix an strange MSIE bug where the text is truncated
line.Set('chart.units.post', '% .');
line.Set('chart.yaxispos', 'right');
line.Set('chart.key', ['2007', '2008']);
line.Set('chart.key.background', 'white');
line.Set('chart.noaxes', true);
line.Set('chart.gutter.left', 5);
line.Set('chart.gutter.right', 35);
line.Set('chart.hmargin', 10);
line.Set('chart.background.barcolor1', 'white');
line.Set('chart.background.barcolor2', 'white');
line.Set('chart.shadow', true);
line.Set('chart.background.grid.autofit', true);
line.Set('chart.contextmenu', [['Show dialog', function () {ModalDialog.Show('myDialog', 300);}], ['Cancel', function () {}]]);
line.Draw();
}
</script>
<ul>
<li><a href="#introduction">Introduction</a></li>
<li><a href="#getting">Getting hold of ExCanvas</a></li>
<li><a href="#caveats">Caveats</a></li>
<li><a href="#frame">Google Chrome Frame</a></li>
<li><a href="#dynamic.canvas">Using a dynamically created canvas</a></li>
</ul>
<a name="introduction"></a>
<h4>Introduction</h4>
<p>
As of December 2009 RGraph now works partially with Internet Explorer without Google Chrome Frame.
Charts are rendered as VML. You are still recommended to use
<a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a> to get the best results.
The interactive features are unlikely to work correctly. RGraph only works with Microsoft
Internet Explorer 8.
</p>
<p>
Thanks go to everyone involved with the <a href="http://code.google.com/p/explorercanvas/" target="_blank" rel="nofollow">ExCanvas project</a> for providing the ExCanvas library.
</p>
<a name="getting"></a>
<h4>Getting hold of ExCanvas</h4>
<p>
Google ExCanvas is distributed with RGraph in the "excanvas" directory. There is a minified gzip compressed version, along
with the original.
</p>
<a name="caveats"></a>
<h4>Caveats</h4>
<ul>
<li>The interactive features of RGraph are unlikely to work correctly with MSIE 8.</li>
<li>Shadows are now available (on some chart types), albeit without blurring.</li>
<li>You must reference the Javascript libraries in the documents <head>.</li>
<li>You must use the window.onload event to create your chart.</li>
<li>If your page is large, there may be a slight pause before the window.onload event fires and thus creates the chart.</li>
<li>Changing the font that text is shown in is not available.</li>
</ul>
<a name="frame"></a>
<h4>Google Chrome Frame</h4>
<p>
Instead of ExCanvas you can also use Google Chrome Frame. This basically turns Internet Explorer into Google Chrome, and fully
supports RGraph. Since it involves a plugin installation, this is a better option if you can fully influence the users PC. If you
can fully influence the users PC however, a better option might be to simply use one of the browsers with native
support.
</p>
<br />
<a name="dynamic.canvas"></a>
<h4>Using a dynamically created canvas</h4>
<p>
If you're creating your canvas dynamically there is an extra step that you must perform to allow it to be recognised by
ExCanvas:
</p>
<pre class="code">
var canvas = document.createElement('CANVAS');
canvas.id = 'cvs';
canvas.width = 600;
canvas.height = 250;
canvas.style.border = '1px dashed black';
document.body.appendChild(canvas);
<span style="color: green">G_vmlCanvasManager.initElement(canvas);</span>
</pre>
<br />
<br />
<br />
<!-- This is the ModdalDialog -->
<div id="myDialog" style="display: none">
<div style="text-align: center; font-family: Arial">
<h4>Please wait...</h4>
<span style="font-size: 8pt">(Nothing is going to happen, this is simply an example <a href="" onclick="ModalDialog.Close(); return false">Close</a>)</span>
</div>
</div>
</body>
</html>
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