Flex 面板

介绍

Panel 类是一个容器，它包含标题栏、标题、边框以及子元素的内容区域。

类声明

以下是spark.components.Panel类的声明：

public class Panel
   extends SkinnableContainer

公共属性

序号	属性和描述
1	controlBarContent : Array 要包含在 Panel 容器的控制栏区域中的组件集。
2	controlBarLayout : LayoutBase 定义容器控制栏区域的布局。
3	controlBarVisible : Boolean 如果为 true，则控制栏可见。
4	title : String 在标题栏中显示的标题或字幕。

公共方法

序号	方法和描述
1	Panel() 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 Panel 示例

让我们按照以下步骤检查在 Flex 应用程序中 Panel 的用法，方法是创建一个测试应用程序：

步骤	描述
1	创建一个名为HelloWorld的项目，位于com.tutorialspoint.client包下，如Flex - 创建应用程序章节中所述。
2	修改HelloWorld.mxml，如下所述。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" />
   <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 = "panelPanel" title = "Using Panel" width = "500"
            height = "300">
            <s:layout>
               <s:HorizontalLayout  gap = "10"
                  verticalAlign = "middle" horizontalAlign = "center" />
            </s:layout>

            <s:Panel title = "Basic Layout Panel" top = "0"
               left = "5" height = "200" width = "150" >
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "0" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "55" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "110" />
            </s:Panel>

            <s:Panel title = "Horizontal Layout Panel" top = "0"
               left = "5" height = "200" width = "170" >
               <s:layout>
                  <s:HorizontalLayout/>
               </s:layout>
               
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "0" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "55" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "110" />
            </s:Panel>
            
            <s:Panel title = "Vertical Layout Panel" top = "0"
               left = "5" height = "200" width = "150" >
               <s:layout>
                  <s:VerticalLayout />
               </s:layout>
               
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "0" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "55" />
               <s:BorderContainer width = "50" height = "50"
                  borderWeight = "2" color = "0x323232" top = "110" />
            </s:Panel>
         </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，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，它将产生以下结果：[在线试用]

flex_layout_panels.htm

打印页面