添加 mouseOver/mouseDown/mouseUp/等.自定义 MXML 组件 [英] Adding mouseOver/mouseDown/mouseUp/etc. to custom MXML component

问题描述

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

I'm new to Flex and am porting a pure Flash/AS3 app to Flex 4.5

我创建了一个基于 边框容器

<?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

I'm trying to add highlighting/growing effect on mouseOver

和对 mouseDown 的按下"效果到该组件:

and "pressed down" effect on mouseDown to that component:

<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，这些方法根本没有被调用.

Unfortunately those methods aren't called at all.

在纯 Flash/AS3 应用程序中我会调用

In pure Flash/AS3 app I'd call

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

它会工作得很好，但在 Flex 4.5 中我不知道如何做到这一点.

and it would work well, but here in Flex 4.5 I don't know how to do this.

我还注意到有一个 dropShadowVisible="true" 属性，但不确定它是否/如何用于我的目的.

Also I've noticed that there is a dropShadowVisible="true" attribute, but not sure if/how it can be used for my purposes.

而且我不确定是否允许在 flex 中放大/缩小自定义组件，或者我可能应该使用Flex Effects"(但如何使用?)并设置 disableLayout="true"?

And I'm not sure if scaling up/down a custom component is allowed in flex or I probably should use "Flex Effects" (but how?) and also set disableLayout="true"?

推荐答案

以下 2 种方法中的任一种在 Flex 4.5 中对我有用:

Either of 2 methods below work for me in 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，曼苏罗，我不能给你答案，但我已经赞成你的评论.

Thank you, Mansuro, I couldn't give you the answer, but I've upvoted yoyur comment.

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