MovieClipAsset is a subclass of the flash.display.MovieClip class
which represents movieclip symbols that you embed in a Flex application
from a SWF file produced by Flash.
It implements the IFlexDisplayObject interface, which makes it
possible for the MovieClip to be displayed in an Image control,
or to be used as a container background or a component skin.
The MovieClip that you're embedding must be a movieclip symbol
that is in a SWF file.
A common reason for using an embedded movieclip is that you have created
a frame-based animation in Flash and want to use it in a Flex application.
The MXML compiler autogenerates a class that extends MovieClipAsset
to represent the embedded animation.
You don't generally have to use the MovieClipAsset class directly
when you write a Flex application.
For example, you can use a movieclip animation as an application's
background image by writing the following:
without having to understand that the MXML compiler has created
a subclass of MovieClipAsset for you.
However, it may be useful to understand what is happening
at the ActionScript level.
To embed a movieclip in ActionScript, you declare a variable
of type Class, and put [Embed] metadata on it.
For example:
[Bindable]
[Embed(source="Assets.swf", symbol="BackgroundAnimation")]
private var backgroundAnimationClass:Class;
The MXML compiler notices that the BackgroundAnimation symbol
in Assets.swf is a movie clip, autogenerates a subclass of the
MovieClipAsset class to represent it, and sets your variable
to be a reference to this autogenerated class.
You can then use this class reference to create instances of the
MovieClipAsset using the new operator, and you can use
APIs of the MovieClip class on them:
var backgroundAnimation:MovieClipAsset =
MovieClipAsset(new backgroundAnimationClass());
var n:int = backgroundAnimation.totalFrames;
However, you rarely need to create MovieClipAsset instances yourself
because image-related properties and styles can be set to an
image-producing class, and components will create instances as necessary.
For example, to set the application background to this animation,
you can simply write the following:
Returns an EdgeMetrics object for the border that has four properties:
left, top, right,
and bottom.
The value of each property is equal to the thickness of one side
of the border, in pixels.
Implementation public function get borderMetrics():EdgeMetrics
measuredHeight
property
measuredHeight:Number [read-only]
Language Version :
ActionScript 3.0
Product Version :
Flex 3
Runtime Versions :
Flash Player 9, AIR 1.1
The measured height of this object.
This is typically hard-coded for graphical skins
because this number is simply the number of pixels in the graphic.
For code skins, it can also be hard-coded
if you expect to be drawn at a certain size.
If your size can change based on properties, you may want
to also be an ILayoutManagerClient so a measure()
method will be called at an appropriate time,
giving you an opportunity to compute a measuredHeight.
Implementation public function get measuredHeight():Number
measuredWidth
property
measuredWidth:Number [read-only]
Language Version :
ActionScript 3.0
Product Version :
Flex 3
Runtime Versions :
Flash Player 9, AIR 1.1
The measured width of this object.
This is typically hard-coded for graphical skins
because this number is simply the number of pixels in the graphic.
For code skins, it can also be hard-coded
if you expect to be drawn at a certain size.
If your size can change based on properties, you may want
to also be an ILayoutManagerClient so a measure()
method will be called at an appropriate time,
giving you an opportunity to compute a measuredHeight.
Implementation public function get measuredWidth():Number
Constructor Detail
MovieClipAsset
()
Constructor
public function MovieClipAsset()
Language Version :
ActionScript 3.0
Product Version :
Flex 3
Runtime Versions :
Flash Player 9, AIR 1.1
Constructor.
Method Detail
move
()
method
public function move(x:Number, y:Number):void
Language Version :
ActionScript 3.0
Product Version :
Flex 3
Runtime Versions :
Flash Player 9, AIR 1.1
Moves this object to the specified x and y coordinates.
Parameters
x:Number — The new x-position for this object.
y:Number — The new y-position for this object.
setActualSize
()
method
public function setActualSize(newWidth:Number, newHeight:Number):void
Language Version :
ActionScript 3.0
Product Version :
Flex 3
Runtime Versions :
Flash Player 9, AIR 1.1
Sets the actual size of this object.
This method is mainly for use in implementing the
updateDisplayList() method, which is where
you compute this object's actual size based on
its explicit size, parent-relative (percent) size,
and measured size.
You then apply this actual size to the object
by calling setActualSize().
In other situations, you should be setting properties
such as width, height,
percentWidth, or percentHeight
rather than calling this method.
Parameters
newWidth:Number — The new width for this object.
newHeight:Number — The new height for this object.
FlexMovieClip 
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