| Package | mx.effects |
| Class | public class Fade |
| Inheritance | Fade  TweenEffect Effect flash.events.EventDispatcher |
| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
 | Starting with Flex 4.0, Apache recommends that you use the spark.effects.Fade class as an alternative to this class. |
alpha property of a component,
either from transparent to opaque, or from opaque to transparent.
If you specify the Fade effect for the showEffect
or hideEffect trigger, and if you omit values for the
alphaFrom and alphaTo properties,
the effect automatically transitions alpha from 0
to the target's current alpha value on a
showEffect trigger, and from the target's current
alpha value to 0 on a hideEffect trigger.
Note: To use the Fade effect with text, you must use an embedded font, not a device font.
MXML Syntax
Hide MXML SyntaxThe <mx:Fade> tag
inherits the tag attributes of its superclass,
and adds the following tag attributes:
Show MXML Syntax
<mx:Fade
id="ID"
alphaFrom="val"
alphaTo="val"
/>
See also
| Property | Defined By | ||
|---|---|---|---|
| alphaFrom : Number
Initial transparency level between 0.0 and 1.0,
where 0.0 means transparent and 1.0 means fully opaque. | Fade | ||
| alphaTo : Number
Final transparency level,
where 0.0 means transparent and 1.0 means fully opaque. | Fade | ||
 | className : String [read-only]
The name of the effect class, such as "Fade". | Effect | |
| 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 | |
| effectTargetHost : IEffectTargetHost
A property that lets you access the target list-based control
of a data effect. | Effect | |
| filter : String
Specifies an algorithm for filtering targets for an effect. | Effect | |
| hideFocusRing : Boolean
Determines whether the effect should hide the focus ring
when starting the effect. | Effect | |
| instanceClass : Class
An object of type Class that specifies the effect
instance class class for this effect class. | Effect | |
| isPlaying : Boolean [read-only]
A read-only flag which is true if any instances of the effect
are currently playing, and false if none are. | Effect | |
| perElementOffset : Number
Additional delay, in milliseconds, for effect targets
after the first target of the effect. | Effect | |
| playheadTime : Number
Current time position of the effect. | Effect | |
| 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 | |
| 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 object to which this effect is applied. | Effect | |
| targets : Array
An Array of objects that are targets for the effect. | Effect | |
| triggerEvent : Event
The Event object passed to this Effect
by the EffectManager when an effect is triggered,
or null if the effect is not being
played by the EffectManager. | Effect | |
| Method | Defined By | ||
|---|---|---|---|
Fade(target:Object = null)
Constructor. | Fade | ||
| captureEndValues():void
Captures the current values of the relevant properties
on the effect's targets and saves them as end values. | Effect | |
| captureMoreStartValues(targets:Array):void
Captures the current values of the relevant properties
of an additional set of targets
Flex uses this function when a data change
effect is run.
| Effect | |
| 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 | |
| deleteInstance(instance:IEffectInstance):void
Removes event listeners from an instance
and removes it from the list of instances. | Effect | |
| 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 changed by this effect. | Effect | |
| 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 | |
| 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 | |
| stop():void
Stops the effect, leaving the effect targets in their current state. | Effect | |
| alphaFrom | property |
public var alphaFrom:Number| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Initial transparency level between 0.0 and 1.0, where 0.0 means transparent and 1.0 means fully opaque.
If the effect causes the target component to disappear,
the default value is the current value of the target's
alpha property.
If the effect causes the target component to appear,
the default value is 0.0.
| alphaTo | property |
public var alphaTo:Number| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Final transparency level, where 0.0 means transparent and 1.0 means fully opaque.
If the effect causes the target component to disappear,
the default value is 0.0.
If the effect causes the target component to appear,
the default value is the current value of the target's
alpha property.
| Fade | () | Constructor |
public function Fade(target:Object = null)| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Constructor.
Parameterstarget:Object (default = null) |
<?xml version="1.0"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- Simple example to demonstrate the Halo Fade effect. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
initialize="Font.registerFont(myriad_font);">
<fx:Script>
<![CDATA[
import flash.text.Font;
[Embed("assets/OpenSans-Regular.ttf", fontName="MyOpenSans")]
public var opensans_font:Class;
]]>
</fx:Script>
<fx:Declarations>
<mx:Fade id="fadeOut" duration="1000" alphaFrom="1.0" alphaTo="0.0"/>
<mx:Fade id="fadeIn" duration="1000" alphaFrom="0.0" alphaTo="1.0"/>
</fx:Declarations>
<s:Panel title="Halo Fade Effect Example" width="95%" height="95%">
<s:VGroup left="20" right="20" top="20" bottom="20">
<s:Label width="100%" color="blue"
text="Use the Fade effect to show or hide the text and image. Use an embedded font when applying the Fade effect to text."/>
<mx:Text text="Product1"
fontFamily="MyOpenSans" fontSize="14"
visible="{cb1.selected}"
hideEffect="{fadeOut}" showEffect="{fadeIn}"/>
<mx:Image source="@Embed(source='assets/Product1.png')"
visible="{cb1.selected}"
hideEffect="{fadeOut}" showEffect="{fadeIn}"/>
<s:CheckBox id="cb1" label="visible" selected="true"/>
</s:VGroup>
</s:Panel>
</s:Application>