Question

我是Flex新手，正在将纯Flash / AS3应用程序移植到Flex 4.5

创建了自定义MXML组件

<?xml version="1.0" encoding="utf-8"?>
<s:BorderContainer 
    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="160" height="140" >

    <s:Image id="_avatar" enableLoadingState="true" 
        x="0" y="0" width="160" height="120" />

    <s:Label id="_username" x="0" y="125" 
        fontSize="12" fontWeight="bold" /> 

</s:BorderContainer>

我正在尝试在mouseOver上添加突出显示/增长效果

和“压下”对mouseDown的影响到该组件：

<fx:Script>
    <![CDATA[
        import flash.filters.*;

        public static const SHADOW:Array = [ new DropShadowFilter(8, 
            80, 0x000000, 0.2, 32, 32, 1, 1, false, false, false) ];
        public static const GLOW:Array = [ new GlowFilter(0xFFFF00, 
            0.5, 36, 36, 1, 1, false, false) ];

        private var _oldScale:Number;

        private function mouseOver(event:MouseEvent):void {
            _oldScale = scaleX;
            filters = GLOW;
        }

        private function mouseDown(event:MouseEvent):void {
            _oldScale = scaleX;
            scaleX *= 0.95;
            scaleY *= 0.95;
            filters = null;
        }

        private function mouseUp(event:MouseEvent):void {
            scaleX = scaleY = _oldScale;
    filters = GLOW;
        }

        private function mouseOut(event:MouseEvent):void {
            scaleX = scaleY = _oldScale;
            filters = SHADOW;
        }

不幸的是，根本没有调用这些方法。

在纯Flash / AS3应用程序中，我打电话

        addEventListener(MouseEvent.MOUSE_OVER, handleMouseOver);
        addEventListener(MouseEvent.MOUSE_DOWN, handleMouseDown);
        addEventListener(MouseEvent.MOUSE_UP, handleMouseUp);
        addEventListener(MouseEvent.MOUSE_OUT, handleMouseOut);
        addEventListener(MouseEvent.CLICK, handleMouseClick);

它会运行良好，但在Flex 4.5中我不知道如何做到这一点。

另外我注意到有一个 dropShadowVisible =“true”属性，但不确定它是否/如何用于我的目的。

我不确定是否允许在flex中扩展/缩小自定义组件，或者我可能应该使用“Flex Effects”（但如何？）并设置 disableLayout =“true” ？

Answer 1

以下两种方法中的任何一种都适用于Flex 4.5：

<?xml version="1.0" encoding="utf-8"?>
<s:BorderContainer 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="160" height="140" 
mouseOut="handleMouseOut(event)"
mouseDown="handleMouseDown(event)"
mouseUp="handleMouseUp(event)"
mouseOver="handleMouseOver(event)"
creationComplete="init(event)">

<fx:Script>
    <![CDATA[
        import mx.events.FlexEvent;

        public function init(event:FlexEvent):void {
                /*
                addEventListener(MouseEvent.MOUSE_OVER, handleMouseOver);
                addEventListener(MouseEvent.MOUSE_DOWN, handleMouseDown);
                addEventListener(MouseEvent.MOUSE_UP, handleMouseUp);
                addEventListener(MouseEvent.MOUSE_OUT, handleMouseOut);
                addEventListener(MouseEvent.CLICK, handleMouseClick);
                */
         }

谢谢你，Mansuro，我无法给你答案，但我赞成了yoyur评论。

添加mouseOver / mouseDown / mouseUp / etc.自定义MXML组件

1 个答案: