积少成多Flash(9) - Flex 3.0 布局控件, 样式(css), 皮肤(skin)

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积少成多Flash(9) - Flex 3.0 布局控件, 样式(css), 皮肤(skin)

作者：webabcd


介绍
演示 Flex 3.0 中的布局控件的应用，样式和皮肤的应用 

• 布局控件 - Flex 中常用的布局控件一览
• 样式 - 通过 css 控制 Flex 中各个控件的样式
• 皮肤 - 使用 Flash 开发的 swf 做控件的皮肤

在线DEMO
http://www.cnblogs.com/webabcd/archive/2009/11/09/1598980.html  


1、布局控件一览
Layout.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"    
        title="Layout 常用布局控件一览" width="476" height="427">
        
        <mx:Script>
                <![CDATA[
                
                        import mx.controls.Alert;
                        
                        private function submitForm(e:MouseEvent):void
                        {
                                Alert.show("Item1: " + item1.text, "Alert框");
                        }
                        
                ]]>
        </mx:Script>
        
        <!--
                HBox - 水平线性布局
                VBox - 垂直线性布局
        -->
        <mx:HBox x="10" y="10" width="438" horizontalGap="50" borderThickness="1" borderStyle="solid">
                <mx:Label text="HBox - Label1"/>
                <mx:Label text="HBox - Label2"/>
        </mx:HBox>
        
        <!--
                HDividedBox - 在 HBox 的基础上，以垂直方向显示分隔条
                VDividedBox - 在 VBox 的基础上，以水平方向显示分隔条
        -->
        <mx:HDividedBox x="10" y="36" width="438" borderThickness="1" borderStyle="solid">
                <mx:Label text="HDividedBox - Label1"/>
                <mx:Label text="HDividedBox - Label2"/>
        </mx:HDividedBox>
        
        <!--
                Panel - 面板。可设置其标题，内容等
        -->
        <mx:Panel width="171" height="97" layout="absolute" title="Panel - Title" x="10" y="64" borderThickness="1" borderStyle="solid">
                <mx:Label text="Panel - Label1"/>
        </mx:Panel>
        
        <!--
                Grid - 网格型布局控件
        -->
        <mx:Grid x="10" y="169" borderThickness="1" borderStyle="solid">
                <mx:GridRow width="100%" height="100%">
                        <mx:GridItem width="100%" height="100%">
                                <mx:Label text="Grid - Label1"/>
                        </mx:GridItem>
                        <mx:GridItem width="100%" height="100%">
                                <mx:Label text="Grid - Label2"/>
                        </mx:GridItem>
                </mx:GridRow>
                <mx:GridRow width="100%" height="100%">
                        <mx:GridItem width="100%" height="100%" colSpan="2" horizontalAlign="center">
                                <mx:Label text="Grid - Label3"/>
                        </mx:GridItem>
                </mx:GridRow>
        </mx:Grid>
        
        <!--
                Form - 用于构建表单型布局
        -->
        <mx:Form x="189" y="64" width="259" height="149" borderThickness="1" borderStyle="solid">
                <mx:FormHeading label="Form - Head"/>
                <mx:FormItem label="Item1: ">
                        <mx:TextInput id="item1" />        
                </mx:FormItem>
                <mx:FormItem>
                        <mx:HRule height="1" width="100%" />
                        <mx:Button label="Form - Submit" click="submitForm(event)" />
                </mx:FormItem>
        </mx:Form>
        
        <!--
                Canvas - 绝对定位布局控件
        -->
        <mx:Canvas width="438" height="84" x="10" y="221" borderThickness="1" borderStyle="solid">
                <mx:Label text="Canvas - Label1"/>
                <mx:Label text="Canvas - Label2" x="104" y="10"/>
                <mx:Label text="Canvas - Label3" x="208" y="20"/>
        </mx:Canvas>
        
        <!--
                ApplicationControlBar - 显示为一个条形控件
        -->
        <mx:ApplicationControlBar x="10" y="313" width="436">
                <mx:Label text="ApplicationControlBar - Label1"/>
        </mx:ApplicationControlBar>
                
        <!--
                ControlBar - Panel 底部的条形控件
                Spacer - 不用于显示，纯粹占位用
        -->
        <mx:ControlBar>
                <mx:Label text="Panel - ControlBar - Label1"/>
                <mx:Spacer width="100%" x="154" y="350"/>
                <mx:Label text="Panel - ControlBar - Label2"/>
        </mx:ControlBar>
</mx:Panel>

 

 

2、样式的控制
样式

/*    
* Flex 也支持 CSS 中的类型选择符
* 此种类型选择符必须设置在外部，然后由具体的 mxml 引用，直接将其写在 <mx:Style /> 中无效
*/
Application
{
        font-size: 12px;
}

 

引用样式

<mx:Style source="style.css" />

 

css.mxml（Flex 中样式相关的演示）

<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="300"
        initialize="init();"
        title="CSS 的应用">
        
        <mx:Script>
                <![CDATA[
        
                        // 重写已声明的样式
                        // 其中样式 “italic” 已在 <mx:Style /> 中做了声明
                        private function init():void
                        {
                                var css:CSSStyleDeclaration = StyleManager.getStyleDeclaration(".italic");
                                css.setStyle("fontStyle", "italic");
                        }
                        
                        // 以编程方式指定样式
                        private function setTextInputStyle():void
                        {
                                txt.setStyle("color", "Red");
                        }
                        
                ]]>
        </mx:Script>
        
        <mx:Style>
                /* 在 Flex 中的做样式设置，基本与 CSS 相同 */
                
                .red    
                {    
                        color: red;
                }
                .bold
                {
                        font-weight: bold;
                }
                .italic
                {
                        
                }
                
                .myClass
                {
                        /* 使用内嵌图片做背景 */
                        background-image:Embed("images/logo.png");
                }
        </mx:Style>                
        
        <!--以声明方式指定样式（可以一次指定多个样式）-->
        <mx:Label text="Label" x="10" y="10" styleName="red bold italic" />
        
        <!--以编程方式指定样式-->
            <mx:TextInput id="txt" text="TextInput" x="10" y="36" initialize="setTextInputStyle();" />

        <mx:VBox styleName="myClass" x="10" y="85">
                <mx:Label text="Label" color="yellow" fontSize="30" />
        </mx:VBox>        
    
</mx:Panel>

 

 

3、皮肤的使用
customButton.css

Button.customButton
{
        /*
         * 如果要在运行时加载 skin 需要将其编译为 swf（在 .css 文件中单击右键，选择 Compile CSS to SWF）
         * 自定义皮肤：在 Flash 中要选择为 ActionScript 导出，在 Flash 中编辑皮肤时，要启用9切片(放大/缩小时边缘不会变形，也就是说边缘不随放大/缩小而变化)
         * 此处指定的 style/skin.swf 为在 Flash 中编辑的皮肤
         */
        upSkin: Embed(source="style/skin.swf", symbol="Button_upSkin");
}

 

Skin.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="300"
        title="Skin 的应用">
        
        <mx:Script>    
                <![CDATA[
                
                        // 应用自定义皮肤
                        private function changeSkin():void
                        {
                                StyleManager.loadStyleDeclarations("style/customButton.swf");
                                
                                btn.styleName = "customButton"
                        }
                        
                ]]>
        </mx:Script>
        
        <mx:Style source="style/customButton.css" />
        
        <mx:Button id="btn" label="换皮" click="changeSkin();" />
        
</mx:Panel>

 

 

4、ToolTip 的样式的控制
style.css

ToolTip    
{
        fontSize: 12;
        fontStyle: "italic";
        color: #000000;
        backgroundColor: #FCEA1E;
}

 

ToolTipDemo.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Panel xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="400" height="300"
        title="ToolTip 的 Demo">
                        
        <mx:Style source="style.css" />
            
        <mx:TextInput toolTip="我是 TookTip" x="10" y="10"/>
        
</mx:Panel>

 

 

OK
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