mx.effects.effectClasses.ZoomInstance - Adobe® Flex® 4 Language Reference (Flex 4)

Package	mx.effects.effectClasses
Class	public class ZoomInstance
Inheritance	ZoomInstance TweenEffectInstance EffectInstance EventDispatcher Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The ZoomInstance class implements the instance class for the Zoom effect. Flex creates an instance of this class when it plays a Zoom effect; you do not create one yourself.

Every effect class that is a subclass of the TweenEffect class supports the following events:

tweenEnd: Dispatched when the tween effect ends.
tweenUpdate: Dispatched every time a TweenEffect class calculates a new value.

The event object passed to the event listener for these events is of type TweenEvent. The TweenEvent class defines the property value, which contains the tween value calculated by the effect. For the Zoom effect, the TweenEvent.value property contains a 2-item Array, where:

value[0]:Number A value between the values of the Zoom.zoomWidthFrom and Zoom.zoomWidthTo property.
value[1]:Number A value between the values of the Zoom.zoomHeightFrom and Zoom.zoomHeightTo property.

See also

mx.effects.Zoom
mx.events.TweenEvent

Public Properties

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	Property		Defined By
		captureRollEvents : Boolean Prevents the rollOut and rollOver events from being dispatched if the mouse has not moved.	ZoomInstance
		className : String [read-only] The name of the effect class, such as "FadeInstance".	EffectInstance
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		duration : Number The duration of the effect, in milliseconds.	EffectInstance
		easingFunction : Function The easing function for the animation.	TweenEffectInstance
		effect : IEffect The IEffect object that created this IEffectInstance object.	EffectInstance
		effectTargetHost : mx.effects:IEffectTargetHost A property that lets you access the target list-based control of a data effect.	EffectInstance
		hideFocusRing : Boolean Determines whether the effect should hide the focus ring when starting the effect.	EffectInstance
		originX : Number Number that represents the x-position of the zoom origin, or registration point.	ZoomInstance
		originY : Number Number that represents the y-position of the zoom origin, or registration point.	ZoomInstance
		playheadTime : Number [override] Current time position of the effect.	TweenEffectInstance
		propertyChanges : PropertyChanges Specifies the PropertyChanges object containing the start and end values for the set of properties relevant to the effect's targets.	EffectInstance
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		repeatCount : int Number of times to repeat the effect.	EffectInstance
		repeatDelay : int Amount of time, in milliseconds, to wait before repeating the effect.	EffectInstance
		startDelay : int Amount of time, in milliseconds, to wait before starting the effect.	EffectInstance
		suspendBackgroundProcessing : Boolean If true, blocks all background processing while the effect is playing.	EffectInstance
		target : Object The UIComponent object to which this effect is applied.	EffectInstance
		triggerEvent : Event The event, if any, which triggered the playing of the effect.	EffectInstance
		tween : mx.effects:Tween The Tween object, which determines the animation.	TweenEffectInstance
		zoomHeightFrom : Number Number that represents the scale at which to start the height zoom, as a percent between 0.01 and 1.0.	ZoomInstance
		zoomHeightTo : Number Number that represents the scale at which to complete the height zoom, as a percent between 0.01 and 1.0.	ZoomInstance
		zoomWidthFrom : Number Number that represents the scale at which to start the width zoom, as a percent between 0.01 and 1.0.	ZoomInstance
		zoomWidthTo : Number Number that represents the scale at which to complete the width zoom, as a percent between 0.01 and 1.0.	ZoomInstance

Protected Properties

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	Property		Defined By
		playCount : int = 0 Number of times that the instance has been played.	EffectInstance

Public Methods

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	Method		Defined By
		ZoomInstance(target:Object) Constructor.	ZoomInstance
		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
		dispatchEvent(event:Event):Boolean Dispatches an event into the event flow.	EventDispatcher
		end():void [override] Interrupts an effect that is currently playing, and immediately jumps to the end of the effect.	TweenEffectInstance
		finishEffect():void Called by the end() method when the effect finishes playing.	EffectInstance
		finishRepeat():void Called after each iteration of a repeated effect finishes playing.	EffectInstance
		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
		initEffect(event:Event):void This method is called if the effect was triggered by the EffectManager.	EffectInstance
		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
		onTweenEnd(value:Object):void Callback method that is called when the target should be updated by the effect for the last time.	TweenEffectInstance
		onTweenUpdate(value:Object):void Callback method that is called when the target should be updated by the effect.	TweenEffectInstance
		pause():void Pauses the effect until you call the resume() method.	EffectInstance
		play():void Plays the effect instance on the target.	EffectInstance
		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.	EffectInstance
		reverse():void Plays the effect in reverse, starting from the current position of the effect.	EffectInstance
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		startEffect():void Plays the effect instance on the target after the startDelay period has elapsed.	EffectInstance
		stop():void Stops the effect, leaving the target in its current state.	EffectInstance
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	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
		createTween(listener:Object, startValue:Object, endValue:Object, duration:Number = -1, minFps:Number = -1):mx.effects:Tween Creates a Tween instance, assigns it the start, end, and duration values.	TweenEffectInstance

Events

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	Event		Summary	Defined By
		activate	[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.	EventDispatcher
		deactivate	[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.	EventDispatcher

Property Detail

captureRollEvents

property

public var captureRollEvents:Boolean

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Prevents the rollOut and rollOver events from being dispatched if the mouse has not moved. Set this value to true in situations where the target toggles between a big and small state without moving the mouse.

The default value is false.

originX

property

public var originX:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the x-position of the zoom origin, or registration point. The default value is target.width / 2, which is the center of the target.

originY

property

public var originY:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the y-position of the zoom origin, or registration point. The default value is target.height / 2, which is the center of the target.

zoomHeightFrom

property

public var zoomHeightFrom:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the scale at which to start the height zoom, as a percent between 0.01 and 1.0. The default value is 0.01, which is very small.

zoomHeightTo

property

public var zoomHeightTo:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the scale at which to complete the height zoom, as a percent between 0.01 and 1.0. The default value is 1.0, which is the object's normal size.

zoomWidthFrom

property

public var zoomWidthFrom:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the scale at which to start the width zoom, as a percent between 0.01 and 1.0. The default value is 0.01, which is very small.

zoomWidthTo

property

public var zoomWidthTo:Number

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number that represents the scale at which to complete the width zoom, as a percent between 0.01 and 1.0. The default value is 1.0, which is the object's normal size.

Constructor Detail

ZoomInstance

()

Constructor

public function ZoomInstance(target:Object)

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Constructor.

Parameters

target:Object — The Object to animate with this effect.