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Spark Fade effect in Flex4
Posted on: July 2, 2010 at 12:00 AM
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The Fade effect uses the alpha property for effect. The changes of effect from transparent to opaque, or from opaque to transparent.

Spark Fade effect in Flex4:

The Fade effect uses the alpha property for effect. The changes of effect from transparent to opaque, or from opaque to transparent. You can specify the effect using rollOverEffect and rollOutEffect. The Tag of Fade Effect is <s:Fade>.
In this example you can see how we can use a Fade effect with component. The syntax of Fade effect is following:

<s:Fade
id=""
alphaFrom=""
alphaTo=""
duration=""
/>

Example:

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

xmlns:s="library://ns.adobe.com/flex/spark"

xmlns:mx="library://ns.adobe.com/flex/mx"

minWidth="955" minHeight="600">

<fx:Declarations>

<s:Fade id="fadeON" alphaFrom="0.5" alphaTo="1.0" duration="200"/>

<s:Fade id="fadeOFF" alphaFrom="1.0" alphaTo="0.5" duration="200"/>

</fx:Declarations>

<s:Panel title="Spark Fade Effect Example"

chromeColor="#000000"

color="#CCCCCC" width="309" height="184">

<mx:ApplicationControlBar horizontalAlign="center" width="307">

<s:Label text="Mouse over on button and show the effect"

color="#000000"

fontFamily="Verdana"/>

</mx:ApplicationControlBar>

<s:Button id="btn"

label="Spark Fade Effect"

x="83" y="62"

rollOverEffect="{fadeON}"

rollOutEffect="{fadeOFF}"

fontFamily="Verdana" height="37"

alpha="0.5"

cornerRadius="20"/>

</s:Panel>

</s:Application>

Output:

Running Application:

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Posted on: July 2, 2010

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