Flex调整文本的距离
距离分为两种：
水平间距：letterSpacing 在线示例
垂直间距：leading 在线示例
还有一种，调整段落的缩进，与网页类似，使用textIndent属性
letterSpacing示例代码：
<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/04/22/setting-the-letter-spacing-in-the-richtexteditor-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="middle"
backgroundColor="white" viewSourceURL="srcview/index.html">
<mx:Style>
.myTextAreaStyleName {
fontFamily: Courier;
letterSpacing: 3; /* pixels */
}
</mx:Style>
<mx:Script>
<![CDATA[
import mx.events.SliderEvent;
private function slider_change(evt:SliderEvent):void {
var cssStyle:CSSStyleDeclaration = StyleManager.getStyleDeclaration(".myTextAreaStyleName");
cssStyle.setStyle("letterSpacing", evt.value);
}
]]>
</mx:Script>
<mx:String id="str" source="lorem.txt" />
<mx:ApplicationControlBar dock="true">
<mx:Form styleName="plain">
<mx:FormItem label="letterSpacing:">
<mx:HSlider id="slider"
minimum="0"
maximum="20"
value="3"
liveDragging="true"
snapInterval="1"
tickInterval="1"
change="slider_change(event);" />
</mx:FormItem>
</mx:Form>
</mx:ApplicationControlBar>
<mx:RichTextEditor id="richTextEditor"
text="{str}"
textAreaStyleName="myTextAreaStyleName"
width="100%"
height="100%" />
</mx:Application>
leading的示例代码：
<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/05/31/setting-the-leading-on-a-text-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="top"
backgroundColor="white" viewSourceURL="srcview/index.html">
<mx:Script>
<![CDATA[
private function init():void {
slider.value = txt.getStyle("leading");
}
]]>
</mx:Script>
<mx:String id="lorem" source="lorem.txt" />
<mx:ApplicationControlBar dock="true">
<mx:Form styleName="plain">
<mx:FormItem label="leading:" direction="horizontal">
<mx:HSlider id="slider"
minimum="0"
maximum="10"
snapInterval="1"
tickInterval="1"
liveDragging="true" />
<mx:Label text="{slider.value}" />
</mx:FormItem>
<mx:FormItem label="height:">
<mx:Label text="{txt.height}" />
</mx:FormItem>
</mx:Form>
</mx:ApplicationControlBar>
<mx:Text id="txt"
text="{lorem}"
leading="{slider.value}"
textAlign="justify"
width="400"
preinitialize="init();" />
</mx:Application>
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