mx.effects.AnimateProperty (Flex™ 2.0.1 Language Reference)

Package	mx.effects
Class	public class AnimateProperty
Inheritance	AnimateProperty TweenEffect Effect EventDispatcher Object

The AnimateProperty effect animates a property or style of a component. You specify the property name, start value, and end value of the property to animate. The effect sets the property to the start value, and then updates the property value over the duration of the effect until it reaches the end value.

For example, to change the width of a Button control, you can specify width as the property to animate, and starting and ending width values to the effect.

MXML Syntax expanded

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The <mx:AnimateProperty> tag inherits all the tag attributes of its superclass and adds the following tag attributes:

  <mx:AnimateProperty 
    id="ID"
   fromValue="0"
    isStyle="false|true"  
    property="required"
    roundValue="false|true"
    toValue="0" 
  />

View the examples.

Public Properties

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	Property		Defined by
		className : String The name of the effect class, such as `"Fade"`.	Effect
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		customFilter : EffectTargetFilter Specifies a custom filter object, of type EffectTargetFilter, used by the effect to determine the targets on which to play the effect.	Effect
		duration : Number Duration of the effect in milliseconds.	Effect
		easingFunction : Function = null The easing function for the animation.	TweenEffect
		filter : String Specifies an algorithm for filtering targets for an effect.	Effect
		fromValue : Number The starting value of the property for the effect.	AnimateProperty
		instanceClass : Class An object of type Class that specifies the effect instance class class for this effect class.	Effect
		isPlaying : Boolean A read-only flag which is true if any instances of the effect are currently playing, and false if none are.	Effect
		isStyle : Boolean = false If `true`, the property attribute is a style and you set it by using the `setStyle()` method.	AnimateProperty
		property : String The name of the property on the target to animate.	AnimateProperty
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		relevantProperties : Array An Array of property names to use when performing filtering.	Effect
		relevantStyles : Array An Array of style names to use when performing filtering.	Effect
		repeatCount : int = 1 Number of times to repeat the effect.	Effect
		repeatDelay : int = 0 Amount of time, in milliseconds, to wait before repeating the effect.	Effect
		roundValue : Boolean = false If `true`, round off the interpolated tweened value to the nearest integer.	AnimateProperty
		startDelay : int = 0 Amount of time, in milliseconds, to wait before starting the effect.	Effect
		suspendBackgroundProcessing : Boolean = false If `true`, blocks all background processing while the effect is playing.	Effect
		target : Object The UIComponent object to which this effect is applied.	Effect
		targets : Array An Array of UIComponent objects that are targets for the effect.	Effect
		toValue : Number The ending value for the effect.	AnimateProperty

Public Methods

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	Method		Defined by
		AnimateProperty(target:Object = null) Constructor.	AnimateProperty
		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
		captureStartValues():void Captures the current values of the relevant properties on the effect's targets.	Effect
		createInstance(target:Object = null):IEffectInstance Creates a single effect instance and initializes it.	Effect
		createInstances(targets:Array = null):Array Takes an Array of target objects and invokes the `createInstance()` method on each target.	Effect
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		end(effectInstance:IEffectInstance = null):void Interrupts an effect that is currently playing, and jumps immediately to the end of the effect.	Effect
		getAffectedProperties():Array Returns an Array of Strings, where each String is the name of a property that is changed by this effect.	Effect
		hasEventListener(type:String):Boolean Checks whether the EventDispatcher object has any listeners registered for a specific type of event.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		pause():void Pauses the effect until you call the `resume()` method.	Effect
		play(targets:Array = null, playReversedFromEnd:Boolean = false):Array Begins playing the effect.	Effect
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Removes a listener from the EventDispatcher object.	EventDispatcher
		resume():void Resumes the effect after it has been paused by a call to the `pause()` method.	Effect
		reverse():void Plays the effect in reverse, if the effect is currently playing, starting from the current position of the effect.	Effect
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object
		willTrigger(type:String):Boolean Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.	EventDispatcher

Protected Methods

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	Method		Defined by
		applyValueToTarget(target:Object, property:String, value:*, props:Object):void Used internally by the Effect infrastructure.	Effect
		effectEndHandler(event:EffectEvent):void Called when an effect instance has finished playing.	Effect
		effectStartHandler(event:EffectEvent):void This method is called when the effect instance starts playing.	Effect
		filterInstance(propChanges:Array, targ:Object):Boolean Determines the logic for filtering out an effect instance.	Effect
		getValueFromTarget(target:Object, property:String):* Called by the `captureStartValues()` method to get the value of a property from the target.	Effect
		initInstance(instance:IEffectInstance):void Copies properties of the effect to the effect instance.	Effect
		tweenEventHandler(event:TweenEvent):void Called when the TweenEffect dispatches a TweenEvent.	TweenEffect

Events

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	Summary	Defined by
activate	Dispatched when Flash Player gains operating system focus and becomes active.	EventDispatcher
deactivate	Dispatched when Flash Player loses operating system focus and is becoming inactive.	EventDispatcher
effectEnd	Dispatched when the effect finishes playing, either when the effect finishes playing or when the effect has been interrupted by a call to the `end()` method.	Effect
effectStart	Dispatched when the effect starts playing.	Effect
tweenEnd	Dispatched when the tween effect ends.	TweenEffect
tweenStart	Dispatched when the tween effect starts, which corresponds to the first call to the `onTweenUpdate()` method.	TweenEffect
tweenUpdate	Dispatched every time the tween effect updates the target.	TweenEffect

Property detail

fromValue

property

public var fromValue:Number

The starting value of the property for the effect. The default value is the target's current property value.

isStyle

property

public var isStyle:Boolean = false

If true, the property attribute is a style and you set it by using the setStyle() method.

The default value is false.

property

public var property:String

The name of the property on the target to animate. This attribute is required.

roundValue

property

public var roundValue:Boolean = false

If true, round off the interpolated tweened value to the nearest integer. This property is useful if the property you are animating is an int or uint.

The default value is false.

toValue

property

public var toValue:Number

The ending value for the effect. The default value is the target's current property value.

Constructor detail

AnimateProperty

()

constructor

public function AnimateProperty(target:Object = null)

Constructor.

Parameters

target:Object (default = null) — The Object to animate with this effect.

Examples

AnimatePropertyEffectExample

<?xml version="1.0"?>
<!-- Simple example to demonstrate the AnimateProperty effect. -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

    <mx:Sequence id="animateScaleXUpDown" >
        <mx:AnimateProperty property="scaleX" fromValue="1" toValue="1.5" duration="1000" />
        <mx:AnimateProperty property="scaleX" fromValue="1.5" toValue="1" duration="1000" />    
    </mx:Sequence>

    <mx:Panel title="AnimateProperty Effect Example" width="75%" height="75%" 
        paddingTop="10" paddingLeft="10" paddingRight="10" paddingBottom="10">

        <mx:Text width="100%" color="blue" 
            text="Click on the image to use the AnimateProperty effect with the scaleX property."/>

        <mx:Image id="flex" source="@Embed(source='assets/Nokia_6630.png')"
            mouseDownEffect="{animateScaleXUpDown}"/>

    </mx:Panel>
</mx:Application>

Current page: http://livedocs.adobe.com/flex/201/langref/mx/effects/AnimateProperty.html

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