Flex - WipeLeft Effect

Quiz

Introduction

The WipeLeft class defines a wipe left effect. The before or after state of the component must be invisible.

Class Declaration

Following is the declaration for mx.effects.WipeLeft class −

public class WipeLeft
   extends MaskEffect

Public Methods

Sr.No	Method & Description
1	WipeLeft(target:Object = null) Constructor.

Methods Inherited

This class inherits methods from the following classes −

mx.effects.MaskEffect
mx.effects.Effect
flash.events.EventDispatcher
Object

Flex WipeLeft Effect Example

Let us follow the following steps to check usage of WipeLeft Effect in a Flex application by creating a test application −

Step	Description
1	Create a project with a name HelloWorld under a package com.tutorialspoint.client as explained in the Flex - Create Application chapter.
2	Modify HelloWorld.mxml as explained below. Keep rest of the files unchanged.
3	Compile and run the application to make sure business logic is working as per the requirements.

Following is the content of the modified mxml file src/com.tutorialspoint/HelloWorld.mxml.

<?xml version = "1.0" encoding = "utf-8"?>
<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
   width = "100%" height = "100%" minWidth = "500" minHeight = "500">
   
   <fx:Style source = "/com/tutorialspoint/client/Style.css" />
   <fx:Script>
      <![CDATA[
         protected function btnWipeLeft_clickHandler
           (event:MouseEvent):void {			
            imageFlex.visible = true;
         }
      ]]>
   </fx:Script>
   
   <fx:Declarations>
      <mx:WipeLeft id = "wipeLeft" duration = "2000" />
   </fx:Declarations>
   
   <s:BorderContainer width = "630" height = "480" id = "mainContainer" 
      styleName = "container">
      <s:VGroup width = "100%" height = "100%" gap = "50" 
         horizontalAlign = "center" verticalAlign = "middle">
         <s:Label id = "lblHeader" text = "Effects Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         
         <s:Panel id = "wipeLeftPanel" title = "Using WipeLeft Effect" 
            width = "500" height = "300" includeInLayout = "true" visible = "true">
            <s:layout>
               <s:VerticalLayout  gap = "10" verticalAlign = "middle" 
                  horizontalAlign = "center" />
            </s:layout>			
            
            <mx:Image id = "imageFlex" visible = "{false}" 
               source = "http://www.tutorialspoint.com/images/flex-mini.png" 
               showEffect = "{wipeLeft}" />
            <s:Button id = "btnWipeLeft" label = "Wipe Left" 
               click = "btnWipeLeft_clickHandler(event)" />            
          </s:Panel>
       </s:VGroup>	 
    </s:BorderContainer>	
</s:Application>

Once you are ready with all the changes done, let us compile and run the application in normal mode as we did in Flex - Create Application chapter. If everything is fine with your application, it will produce the following result: [ Try it online ]

flex_visual_effects.htm

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