Using KitchenSync with Adobe Flex

KitchenSync was designed to be a library for AS3 applications and was intentionally made independent of the Flex framework. Flex contains its own libraries for animation. It also handles validation of children and the display list internally which can cause unexpected results when using KitchenSync. Officially, KitchenSync does not support use with Flex at this point, however, just because it's not officially supported doesn't mean it cannot be used. Here are some tips to help you out.

Tips

• Using the creationComplete or initialize events may cause you to get the following error. Error: frameRateSeed must be a DisplayObject that is part of the Display List. That is because the Synchronize.initialize() method must receive a DisplayObject that has been added to the display list to get a reference to the stage and that doesn't happen in the creationComplete or initialize events. Instead, use addedToStage to initialize KitchenSync.
• In order to optimize performance, Flex components don't necessarily update on stage at the exact same time that you set a property such as 'x'. This may affect the performance of KitchenSync. To learn more about this, check out the invalidateDisplayList() method or read up on creating custom components for a full description.

• Flex may contain some classes with the same class names (but different package names) as the classes in KitchenSync. This is easily fixed by being sure to import org.as3lib.kitchensync.* and org.as3lib.kitchensync.easing.*. When you attempt to use a class such as Cubic, FlexBuilder should even ask you which package you want to import (pictured below). Make sure you choose the com.mismwright one.

Example

This example uses a listener for the addedToStage event to move a Canvas and rotate it.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="500" height="500" 
	addedToStage="onAddedToStage(event)">
	<mx:Script>
		<![CDATA[
			import mx.containers.Canvas;
			import org.as3lib.kitchensync.*;
			import org.as3lib.kitchensync.easing.*;
			import org.as3lib.kitchensync.action.*;
		
			protected function onAddedToStage(evnet:Event):void {
				stage.frameRate = 50;
				KitchenSync.initialize(this);
				
				var box:Canvas = new Canvas();
				box.setStyle("backgroundColor", 0x0000FF);
				box.width = 100;
				box.height = 100;
				addChild(box);
				
				var tweenX:KSTween = new KSTween(box, "x", 300, 0, "5s", "0.5s", Cubic.easeInOut);
				var tweenY:KSTween = new KSTween(box, "y", 300, 0, "3s", "1.5s", Cubic.easeInOut);
				var tweenR:KSTween = new KSTween(box, "rotation", 360, 0, "7s", 0, Cubic.easeInOut);
				
				new KSParallelGroup( tweenX, tweenY, tweenR ).start();
			}
		]]>
	</mx:Script>
</mx:Application>

Links

• Flex Effects API Reference