Package | mx.effects |
Class | public class MaskEffect |
Inheritance | MaskEffect ![]() ![]() ![]() |
Subclasses | Iris, WipeDown, WipeLeft, WipeRight, WipeUp |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 3 |
Runtime Versions: | Flash Player 9, AIR 1.1 |
A mask effect uses an overlay, called a mask, to perform the effect. By default, the mask is a rectangle with the same size as the target component.
The before or after state of the target component of a mask effect must be invisible. That means a mask effect always makes a target component appear on the screen, or disappear from the screen.
You use the scaleXFrom
, scaleYFrom
,
scaleXTo
, and scaleX
properties to specify
the initial and final scale of the mask, where a value of 1.0 corresponds
to scaling the mask to the size of the target component, 2.0 scales
the mask to twice the size of the component, 0.5 scales the mask to half
the size of the component, and so on.
To use any one of these properties, you must specify all four.
You use the xFrom
, yFrom
, xTo
,
and yTo
properties to specify the coordinates of the initial
position and final position of the mask relative to the target component,
where (0, 0) corresponds to the upper left corner of the target.
To use any one of these properties, you must specify all four.
The coordinates of the initial and final position of the mask
depend on the type of effect and whether the show
property
is true
or false
.
For example, for the WipeLeft effect with a show
value of
false
, the coordinates of the initial mask position
are (0, 0),corresponding to the upper-left corner of the target,
and the coordinates of the final position are the upper-right corner
of the target (width, 0), where width is the width of the target.
For a show
value of true
for the WipeLeft
effect, the coordinates of the initial mask position are (width, 0),
and the coordinates of the final position are (0, 0).
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The MaskEffect class defines the following properties, which all of its subclasses inherit:
<mx:tagname createMaskFunction="" moveEasingFunction="" scaleEasingFunction="" scaleXFrom="" scaleXTo="" scaleYFrom="" scaleYTo="" show="true|false" xFrom="" xTo="" yFrom="" yTo="" />
More examples
Related API Elements
Property | Defined By | ||
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![]() | constructor : Object
A reference to the class object or constructor function for a given object instance. | Object |
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 |
Method | Defined By |
---|
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 |
Wed Nov 21 2018, 06:34 AM -08:00