Flex中如何通过labelPosition样式指定PieChart图表标注位置的例子

By Minidxer | November 10, 2008

接下来的例子演示了Flex中如何通过labelPosition样式，指定PieChart图表标注位置。

让我们先来看一下Demo（可以右键View Source或点击这里察看源代码）：

下面是完整代码(或点击这里察看)：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white">
<mx:Script>
<![CDATA[
private function pieSeries_labelFunc(item:Object, field:String, index:Number, percentValue:Number):String {
return item.@label + ": " + item.@data + " (" + percentValue.toFixed(2) + "%)";
}
]]>
</mx:Script>
<mx:XML id="dp">
<products>
<product label="Product 1" data="3" />
<product label="Product 2" data="1" />
<product label="Product 3" data="4" />
<product label="Product 4" data="1" />
<product label="Product 5" data="5" />
<product label="Product 6" data="9" />
</products>
</mx:XML>
<mx:Array id="labelPositionArr">
<mx:Object label="callout" />
<mx:Object label="inside" />
<mx:Object label="insideWithCallout" />
<mx:Object label="none" />
<mx:Object label="outside" />
</mx:Array>
<mx:ApplicationControlBar dock="true">
<mx:Label text="labelPosition:" />
<mx:ComboBox id="comboBox"
dataProvider="{labelPositionArr}" />
</mx:ApplicationControlBar>
<mx:PieChart id="pieChart"
dataProvider="{dp.product}"
height="250"
width="100%">
<mx:series>
<mx:PieSeries id="pieSeries"
field="@data"
labelPosition="{comboBox.selectedItem.label}"
labelFunction="pieSeries_labelFunc" />
</mx:series>
</mx:PieChart>
</mx:Application>

代码：Peter deHaan 翻译/整理/编译：中文Flex例子

Topics: Chart | No Comments » | 725 views Tags: labelFunction, labelPosition, PieChart, PieSeries

中文Flex例子