(Preview)
Package | mx.effects |
Class | public class TweenEffect |
Inheritance | TweenEffect ![]() ![]() ![]() |
Subclasses | AnimateProperty, Blur, Dissolve, Fade, Glow, Move, Pause, Resize, Rotate, SeriesEffect, Zoom |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
![]() | Starting with Flex 4.0, Adobe recommends that you use the spark.effects.Animate class as an alternative to this class. TweenEffect is the superclass for the animated effects in Flex 3. As of Flex 4, the Spark effects extend the spark.effects.Animate class instead of TweenEffect. |
The TweenEffect class is the superclass for all effects that are based on the Tween object. This class encapsulates methods and properties that are common among all Tween-based effects, to avoid duplication of code elsewhere.
You create a subclass of the TweenEffect class to define an effect that plays an animation over a period of time. For example, the Resize effect modifies the size of its target over a specified duration.
MXML Syntax
The <mx:TweenEffect>
tag
inherits all of the tag attributes of its superclass,
and adds the following tag attributes:
<mx:TagName Properties easingFunction="easing function name; no default" Events tweenEnd="No default" />
More examples
Related API Elements
Public Properties
Property | Defined By | ||
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![]() | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object |
Protected Properties
Public Methods
Method | Defined By | ||
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![]() | addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener
receives notification of an event. | EventDispatcher | |
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Dispatches an event into the event flow. | EventDispatcher | |
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Checks whether the EventDispatcher object has any listeners registered for a specific type
of event. | EventDispatcher | |
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Indicates whether an object has a specified property defined. | Object | |
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Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | |
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Indicates whether the specified property exists and is enumerable. | Object | |
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Removes a listener from the EventDispatcher object. | EventDispatcher | |
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Sets the availability of a dynamic property for loop operations. | Object | |
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Returns the string representation of this object, formatted according to locale-specific conventions. | Object | |
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Returns the string representation of the specified object. | Object | |
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Returns the primitive value of the specified object. | Object | |
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Checks whether an event listener is registered with this EventDispatcher object or any of
its ancestors for the specified event type. | EventDispatcher |
Protected Methods
Method | Defined By |
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Events
Event | Summary | Defined By | ||
---|---|---|---|---|
![]() | [broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active. | EventDispatcher | ||
![]() | [broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive. | EventDispatcher |
Property Detail
Constructor Detail
Method Detail
Event Detail
Examples How to use this example
SimpleTweenEffectExample.mxml
<?xml version="1.0"?> <!-- Simple example to demonstrate the TweenEffect class. --> <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"> <fx:Script> <![CDATA[ import mx.events.TweenEvent; // Event handler for the tweenUpdate and tweenEnd effects. private function tweenUpdateHandler(event:TweenEvent):void { // Access current width of the image. currentWidth.text="Current width (in pixels): " + String(event.value[0]); } // Event handler for the reset button. private function resetHandler():void { expand.end(); img.width=30; currentWidth.text="Current width (in pixels): 30"; img.height=60; button1.enabled=true; } ]]> </fx:Script> <fx:Declarations> <mx:Resize id="expand" target="{img}" widthTo="100" heightTo="200" duration="10000" tweenUpdate="tweenUpdateHandler(event);" tweenEnd="tweenUpdateHandler(event);"/> </fx:Declarations> <s:Panel title="Resize Effect Example" width="100%" height="100%" > <s:VGroup left="20" right="20" top="20" bottom="20"> <s:Label width="100%" color="blue" text="Use the Button controls to resize the image."/> <s:HGroup width="100%"> <mx:Image id="img" width="30" height="60" source="@Embed(source='assets/Nokia_6630.png')"/> <s:Label id="currentWidth" height="20" width="100%"/> </s:HGroup> <s:Button id="button1" label="Start" click="expand.play(); button1.enabled=false;"/> <s:Button label="Pause" click="expand.pause();"/> <s:Button label="Resume" click="expand.resume();"/> <s:Button label="Reverse" click="expand.reverse();"/> <s:Button label="End" click="expand.end();"/> <s:Button label="Reset" click="resetHandler();"/> </s:VGroup> </s:Panel> </s:Application>
Wed Nov 21 2018, 06:34 AM -08:00