Flex中如何通过设置GridLines对象的horizontalAlternateFill样式交错显示LineSeries图表背景颜色的例子

By Minidxer | November 27, 2008

接下来的例子演示了Flex中如何通过设置GridLines对象的horizontalAlternateFill样式，交错显示LineSeries图表背景颜色。

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)：

Download: main.mxml
  1. <?xml version="1.0"?>
  2. <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
  3.         layout="vertical"
  4.         verticalAlign="middle"
  5.         backgroundColor="white">
  6.  
  7.     <mx:XMLListCollection id="dp">
  8.         <mx:source>
  9.             <mx:XMLList>
  10.                 <quote date="8/27/2007" open="40.38" close="40.81" />
  11.                 <quote date="8/24/2007" open="40.5" close="40.41" />
  12.                 <quote date="8/23/2007" open="40.82" close="40.6" />
  13.                 <quote date="8/22/2007" open="40.4" close="40.77" />
  14.                 <quote date="8/21/2007" open="40.41" close="40.13" />
  15.                 <quote date="8/20/2007" open="40.55" close="40.74" />
  16.                 <quote date="8/17/2007" open="40.18" close="40.32" />
  17.                 <quote date="8/16/2007" open="39.83" close="39.96" />
  18.                 <quote date="8/15/2007" open="40.22" close="40.18" />
  19.                 <quote date="8/14/2007" open="41.01" close="40.41" />
  20.                 <quote date="8/13/2007" open="41" close="40.83" />
  21.                 <quote date="8/10/2007" open="41.3" close="41.06" />
  22.                 <quote date="8/9/2007" open="39.9" close="40.75" />
  23.                 <quote date="8/8/2007" open="39.61" close="40.23" />
  24.                 <quote date="8/7/2007" open="39.08" close="39.42" />
  25.                 <quote date="8/6/2007" open="38.71" close="39.38" />
  26.                 <quote date="8/3/2007" open="39.47" close="38.75" />
  27.                 <quote date="8/2/2007" open="39.4" close="39.52" />
  28.                 <quote date="8/1/2007" open="40.29" close="39.58" />
  29.             </mx:XMLList>
  30.         </mx:source>
  31.     </mx:XMLListCollection>
  32.  
  33.     <mx:LineChart id="lineChart"
  34.             showDataTips="true"
  35.             dataProvider="{dp}"
  36.             width="100%"
  37.             height="100%">
  38.  
  39.         <mx:backgroundElements>
  40.             <mx:GridLines>
  41.                 <mx:horizontalAlternateFill>
  42.                     <mx:SolidColor color="haloSilver" alpha="0.25" />
  43.                 </mx:horizontalAlternateFill>
  44.             </mx:GridLines>
  45.         </mx:backgroundElements>
  46.  
  47.         <!-- vertical axis -->
  48.         <mx:verticalAxis>
  49.             <mx:LinearAxis baseAtZero="false" title="Price" />
  50.         </mx:verticalAxis>
  51.  
  52.         <!-- horizontal axis -->
  53.         <mx:horizontalAxis>
  54.             <mx:CategoryAxis id="ca" categoryField="@date" title="Date" />
  55.         </mx:horizontalAxis>
  56.  
  57.         <!-- horizontal axis renderer -->
  58.         <mx:horizontalAxisRenderers>
  59.             <mx:AxisRenderer axis="{ca}" canDropLabels="true" />
  60.         </mx:horizontalAxisRenderers>
  61.  
  62.         <!-- series -->
  63.         <mx:series>
  64.             <mx:LineSeries yField="@open" form="curve" displayName="Open" />
  65.         </mx:series>
  66.     </mx:LineChart>
  67.  
  68. </mx:Application>
代码：Peter deHaan 翻译/整理/编译：中文Flex例子

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