Flex - 边框容器 (BorderContainer)

简介

BorderContainer 类定义了一组 CSS 样式，用于控制容器的边框和背景填充外观。

类声明

以下是spark.components.BorderContainer类的声明：

public class BorderContainer 
   extends SkinnableContainer

公共属性

序号	属性及描述
1	backgroundFill : IFill 定义 BorderContainer 的背景。
2	borderStroke : IStroke 定义 BorderContainer 容器的描边。

序号

属性及描述

backgroundFill : IFill

定义 BorderContainer 的背景。

borderStroke : IStroke

定义 BorderContainer 容器的描边。

公共方法

序号	方法及描述
1	BorderContainer() 构造函数。

继承的方法

此类继承自以下类的方法：

spark.components.SkinnableContainer
spark.components.supportClasses.SkinnableContainerBase
spark.components.supportClasses.SkinnableComponent
mx.core.UIComponent
mx.core.FlexSprite
flash.display.Sprite
flash.display.DisplayObjectContainer
flash.display.InteractiveObject
flash.display.DisplayObject
flash.events.EventDispatcher
Object

Flex BorderContainer 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 BorderContainer 的方法：

步骤	描述
1	按照“Flex - 创建应用”章节中所述，创建一个名为HelloWorld的项目，位于包com.tutorialspoint.client下。
2	修改HelloWorld.mxml，如下所示。保持其余文件不变。
3	编译并运行应用程序，以确保业务逻辑按要求工作。

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[
         private function applyBorderContainerProperties():void {
            borderContainer.setStyle("borderWeight",weightStepper.value);
            borderContainer.setStyle("borderColor",colorPicker.selectedColor);
            borderContainer.setStyle("dropShadowVisible",chkShadow.selected);
         }		
      ]]>
   </fx:Script>
   
   <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 = "Layout Panels Demonstration" 
            fontSize = "40" color = "0x777777" styleName = "heading" />
         
         <s:Panel id = "borderContainerPanel" 
            title = "Using BorderContainer" width = "500" 
            height = "300" includeInLayout = "true" visible = "true">
            <s:layout>
               <s:VerticalLayout  gap = "10" verticalAlign = "middle" 
                  horizontalAlign = "center" />
            </s:layout>				
               
            <s:HGroup>
               <s:VGroup>
                  <s:HGroup verticalAlign = "middle" >
                     <s:Label text = "Border Weight:" width = "100" />
                     <s:NumericStepper id = "weightStepper" value = "1" />
                  </s:HGroup>
                  
                  <s:HGroup verticalAlign = "middle">
                     <s:Label text = "Border Color:" width = "100" />
                     <mx:ColorPicker id = "colorPicker" color = "0x323232" />
                  </s:HGroup>
                  
                  <s:HGroup verticalAlign = "middle">
                     <s:Label text = "Drop Shadow:" width = "100" />
                     <s:CheckBox id = "chkShadow" selected = "false" />
                  </s:HGroup>    
                  
                  <s:Button label = "Apply Properties" 
                     click = "applyBorderContainerProperties()" />
               </s:VGroup>
               
               <s:BorderContainer id = "borderContainer" width = "200"
                  backgroundColor = "0xff99ff">
               </s:BorderContainer>    
            </s:HGroup>
         </s:Panel>				
      </s:VGroup>	 
   </s:BorderContainer>	
</s:Application>

完成所有更改后，让我们像在Flex - 创建应用章节中一样，在普通模式下编译并运行应用程序。如果应用程序一切正常，将会产生以下结果：[ 在线试用 ]

flex_layout_panels.htm

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