DisplayObjectTrait

(Beta)

Package	org.osmf.traits
Class	public class DisplayObjectTrait
Inheritance	DisplayObjectTrait MediaTraitBase EventDispatcher Object

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

DisplayObjectTrait defines the trait interface for media that expose a DisplayObject, and which may have intrinsic dimensions. The intrinsic dimensions of a piece of media refer to its dimensions without regard to those observed when it is projected onto the stage.

For an image, for example, the intrinsic dimensions are the height and width of the image as it is stored.

Use the MediaElement.hasTrait(MediaTraitType.DISPLAY_OBJECT) method to query whether a media element has a trait of this type. If hasTrait(MediaTraitType.DISPLAY_OBJECT) returns true, use the MediaElement.getTrait(MediaTraitType.DISPLAY_OBJECT) method to get an object that is of this type.

Related API Elements

org.osmf.media.MediaElement
flash.display.DisplayObject

Public Properties

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	Property		Defined By
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		displayObject : DisplayObject [read-only] The media's display object.	DisplayObjectTrait
		mediaHeight : Number [read-only] The intrinsic height of the media.	DisplayObjectTrait
		mediaWidth : Number [read-only] The intrinsic width of the media.	DisplayObjectTrait
		traitType : String [read-only] The MediaTraitType for this trait.	MediaTraitBase

Public Methods

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	Method		Defined By
		DisplayObjectTrait(displayObject:DisplayObject, mediaWidth:Number = 0, mediaHeight:Number = 0) Constructor.	DisplayObjectTrait
		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
		dispose():void Disposes of any resources used by this trait.	MediaTraitBase
		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
		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
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		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

	Method		Defined By
		displayObjectChangeEnd(oldDisplayObject:DisplayObject):void Called just after the displayObject property has changed.	DisplayObjectTrait
		displayObjectChangeStart(newView:DisplayObject):void Called immediately before the displayObject property is changed.	DisplayObjectTrait
		mediaSizeChangeEnd(oldMediaWidth:Number, oldMediaHeight:Number):void Called just after setMediaSize() has applied new mediaWidth and/or mediaHeight values.	DisplayObjectTrait
		mediaSizeChangeStart(newMediaWidth:Number, newMediaHeight:Number):void Called just before a call to setMediaSize().	DisplayObjectTrait
		setDisplayObject(value:DisplayObject):void Defines the trait's displayObject.	DisplayObjectTrait
		setMediaSize(mediaWidth:Number, mediaHeight:Number):void Sets the trait's width and height.	DisplayObjectTrait

Events

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	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
displayObjectChange	Dispatched when the trait's displayObject property has changed.	DisplayObjectTrait
mediaSizeChange	Dispatched when the trait's mediaWidth and/or mediaHeight property has changed.	DisplayObjectTrait

Property Detail

displayObject

property

displayObject:DisplayObject [read-only]

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

The media's display object.

Implementation
public function get displayObject():DisplayObject

mediaHeight

property

mediaHeight:Number [read-only]

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

The intrinsic height of the media.

Implementation
public function get mediaHeight():Number

mediaWidth

property

mediaWidth:Number [read-only]

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

The intrinsic width of the media.

Implementation
public function get mediaWidth():Number

Constructor Detail

()

Constructor

public function DisplayObjectTrait(displayObject:DisplayObject, mediaWidth:Number = 0, mediaHeight:Number = 0)

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Constructor.

Parameters

	`displayObject:DisplayObject`

	`mediaWidth:Number` (default = `0`)

	`mediaHeight:Number` (default = `0`)

Method Detail

displayObjectChangeEnd

()

method

protected function displayObjectChangeEnd(oldDisplayObject:DisplayObject):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Called just after the displayObject property has changed. Dispatches the change event.

Subclasses that override should call this method to dispatch the displayObjectChange event.

Parameters

oldDisplayObject:DisplayObject — Previous displayObject value.

displayObjectChangeStart

()

method

protected function displayObjectChangeStart(newView:DisplayObject):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Called immediately before the displayObject property is changed.

Subclasses can override this method to communicate the change to the media.

Parameters

newView:DisplayObject — New displayObject value.

mediaSizeChangeEnd

()

method

protected function mediaSizeChangeEnd(oldMediaWidth:Number, oldMediaHeight:Number):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Called just after setMediaSize() has applied new mediaWidth and/or mediaHeight values. Dispatches the change event.

Subclasses that override should call this method to dispatch the mediaSizeChange event.

Parameters

	`oldMediaWidth:Number` — Previous `mediaWidth` value.

	`oldMediaHeight:Number` — Previous `mediaHeight` value.

mediaSizeChangeStart

()

method

protected function mediaSizeChangeStart(newMediaWidth:Number, newMediaHeight:Number):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Called just before a call to setMediaSize(). Subclasses can override this method to communicate the change to the media.

Parameters

	`newMediaWidth:Number` — New `mediaWidth` value.

	`newMediaHeight:Number` — New `mediaHeight` value.

setDisplayObject

()

method

protected final function setDisplayObject(value:DisplayObject):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Defines the trait's displayObject. If the displayObject is different from the one that is currently set, a displayObjectChange event will be dispatched.

Parameters

value:DisplayObject

setMediaSize

()

method

protected final function setMediaSize(mediaWidth:Number, mediaHeight:Number):void

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Sets the trait's width and height.

Forces non numerical and negative values to zero.

If the either the width or the height differs from the previous width or height, dispatches a mediaSizeChange event.

Parameters

	`mediaWidth:Number` — The new width.

	`mediaHeight:Number` — The new height.

Event Detail

displayObjectChange

Event

Event Object Type: org.osmf.events.DisplayObjectEvent
property DisplayObjectEvent.type = org.osmf.events.DisplayObjectEvent.DISPLAY_OBJECT_CHANGE

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Dispatched when the trait's displayObject property has changed. This occurs when a different DisplayObject is assigned to represent the media.

The DisplayObjectEvent.DISPLAY_OBJECT_CHANGE constant defines the value of the type property of the event object for a displayObjectChange event.

mediaSizeChange

Event

Event Object Type: org.osmf.events.DisplayObjectEvent
property DisplayObjectEvent.type = org.osmf.events.DisplayObjectEvent.MEDIA_SIZE_CHANGE

Language Version:

ActionScript 3.0

Product Version:

OSMF 1.0

Runtime Versions:

Flash Player 10, AIR 1.5

Dispatched when the trait's mediaWidth and/or mediaHeight property has changed.

The DisplayObjectEvent.MEDIA_SIZE_CHANGE constant defines the value of the type property of the event object for a mediaSizeChange event.

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DisplayObjectTrait - AS3 OSMF

Classes x

displayObject

mediaHeight

mediaWidth