Flex Examples
The following example shows how you can set vertical spacing between paragraphs in a Spark TextArea control in Flex 4 by setting the paragraphSpaceBefore and paragraphSpaceArea styles.
paragraphSpaceBefore– A Number that specifies the amount of space, in pixels, to leave before the paragraph (adopts parent’s value if undefined during cascade). Collapses in tandem withparagraphSpaceAfter.paragraphSpaceAfter– A Number that specifies the amount of space, in pixels, to leave after the paragraph (adopts parent’s value if undefined during cascade). Collapses in tandem withparagraphSpaceBefore.
Full code after the jump.
The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see http://www.adobe.com/products/flex/. To download the latest nightly build of the Flex 4 SDK, see http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+4.
For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2009/06/05/setting-vertical-spacing-between-paragraphs-on-the-spark-textarea-control-in-flex-4/ --> <s:Application name="Spark_TextArea_paragraphSpaceBefore_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo"> <s:layout> <s:VerticalLayout /> </s:layout> <mx:ApplicationControlBar width="100%" cornerRadius="0"> <mx:Form styleName="plain"> <mx:FormItem label="paragraphSpaceBefore:"> <s:HSlider id="sliderBefore" liveDragging="true" /> </mx:FormItem> <mx:FormItem label="paragraphSpaceAfter:"> <s:HSlider id="sliderAfter" liveDragging="true" /> </mx:FormItem> </mx:Form> </mx:ApplicationControlBar> <s:Group width="100%" height="100%"> <s:TextArea id="textArea" textAlign="justify" paragraphSpaceBefore="{sliderBefore.value}" paragraphSpaceAfter="{sliderAfter.value}" left="10" right="10" top="10" bottom="10"> <s:content> <fx:String source="lorem.html" /> </s:content> </s:TextArea> </s:Group> </s:Application>
View source is enabled in the following example.
You can also set the paragraphSpaceBefore and paragraphSpaceArea styles in an external .CSS file or <Style/> block, as seen in the following example:
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2009/06/05/setting-vertical-spacing-between-paragraphs-on-the-spark-textarea-control-in-flex-4/ --> <s:Application name="Spark_TextArea_paragraphSpaceBefore_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo"> <fx:Style> @namespace s "library://ns.adobe.com/flex/spark"; s|TextArea { textAlign: justify; paragraphSpaceBefore: 10; paragraphSpaceAfter: 50; left: 10; right: 10; top: 10; bottom: 10; } </fx:Style> <s:TextArea id="textArea"> <s:content> <fx:String source="lorem.html" /> </s:content> </s:TextArea> </s:Application>
Or, you can set the paragraphSpaceBefore and paragraphSpaceArea styles using ActionScript, as seen in the following example:
<?xml version="1.0" encoding="utf-8"?> <!-- http://blog.flexexamples.com/2009/06/05/setting-vertical-spacing-between-paragraphs-on-the-spark-textarea-control-in-flex-4/ --> <s:Application name="Spark_TextArea_paragraphSpaceBefore_test" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo"> <s:layout> <s:VerticalLayout /> </s:layout> <fx:Script> <![CDATA[ private function sliderBefore_change(evt:Event):void { textArea.setStyle("paragraphSpaceBefore", sliderBefore.value); } private function sliderAfter_change(evt:Event):void { textArea.setStyle("paragraphSpaceAfter", sliderAfter.value); } ]]> </fx:Script> <mx:ApplicationControlBar width="100%" cornerRadius="0"> <mx:Form styleName="plain"> <mx:FormItem label="paragraphSpaceBefore:"> <s:HSlider id="sliderBefore" liveDragging="true" change="sliderBefore_change(event);" /> </mx:FormItem> <mx:FormItem label="paragraphSpaceAfter:"> <s:HSlider id="sliderAfter" liveDragging="true" change="sliderAfter_change(event);" /> </mx:FormItem> </mx:Form> </mx:ApplicationControlBar> <s:Group width="100%" height="100%"> <s:TextArea id="textArea" textAlign="justify" left="10" right="10" top="10" bottom="10"> <s:content> <fx:String source="lorem.html" /> </s:content> </s:TextArea> </s:Group> </s:Application>
This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.
Peter deHaan
Peter deHaan currently works for Adobe on the Flex SDK QA team. While not working on Flex, Flash, and ColdFusion applications, Peter enjoys making up bios and writing in 3rd person. Peter's rarely updated blog can be found at blogs.adobe.com/pdehaan/, actionscriptexamples.com, airexamples.com, and coldfusionexamples.com.
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Is there a way to implement spacing after a paragraph using mx Text Area?