Flex - 向左擦除效果

介绍

WipeLeft 类定义了向左擦除的效果。组件的之前或之后状态必须是不可见的。

类声明

以下是mx.effects.WipeLeft类的声明：

public class WipeLeft
   extends MaskEffect

公共方法

继承的方法

此类继承自以下类的方法：

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

Flex 向左擦除效果示例

让我们按照以下步骤，通过创建一个测试应用程序来检查在 Flex 应用程序中使用 WipeLeft 效果：

以下是修改后的 mxml 文件src/com.tutorialspoint/HelloWorld.mxml的内容。

<?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 = "https://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>

完成所有更改后，让我们像在Flex - 创建应用程序章节中那样，以普通模式编译并运行应用程序。如果应用程序一切正常，则会产生以下结果：[ 在线试用 ]