# A gray Pie chart

Here's a gray-themed Pie chart. It uses the `responsive` function to allow for smaller screens, the labels are bold and the text is slightly smaller than usual.

In terms of `responsive` features, when the screen/browser is smaller the labels are changed to not have the percentage appended to them, reduced in size and the `labelsSticks` option is disabled.

Initially, the labels are simple strings that consist of operating system names (like this: `['Symbian','Blackberry','Android','iOS','Windows','Others']`) But these labels then have the relevant percentage that is being represented appended to them (for larger screens only).

The labels are bold too. The font that the labels are rendered in is set to `Lucida Grande` - though if this font is not on your system you may see the labels rendered using `Arial` instead.

The tooltips are created in the same way - just a little more verbosely. They're triggered using the `mouseover` event. The `tooltipsCss` property is used to set styles on the tooltips (ie the `font-size` `text-align` and `pointer-events` properties). The `pointer-events` `CSS` property is turned off so that you can move the mouse pointer around and still see the correct tooltip even if another tooltip is in the way.

This goes in the documents header:

    <script src="RGraph.common.core.js"></script>
    <script src="RGraph.common.dynamic.js"></script>
    <script src="RGraph.common.tooltips.js"></script>
    <script src="RGraph.pie.js"></script>

Put this where you want the chart to show up:

    <div style="float: right">
        <canvas id="cvs" width="550" height="250"<[No canvas support]</canvas>
    </div>

This is the code that generates the chart - it should be placed AFTER the `canvas` tag(s):