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加濾鏡效果GlowTween
/** * * new GlowTween(xxxx, 0xFFFF00); * new GlowTween(xxxx, 0x00FFFF); * GlowTween */package com.riaidea.tween{ import flash.display.InteractiveObject; import flash.events.Event; import flash.events.MouseEvent; import flash.filters.GlowFilter; public class GlowTween { private var _target:InteractiveObject; private var _color:uint; private var _toggle:Boolean; private var _blur:Number; public function GlowTween(target:InteractiveObject, color:uint = 0xFFFFFF) { _target = target; _color = color; _toggle = true; _blur = 2; target.addEventListener(MouseEvent.ROLL_OVER, startGlowHandler); target.addEventListener(MouseEvent.ROLL_OUT, stopGlowHandler); } public function remove():void { _target.removeEventListener(MouseEvent.ROLL_OVER, startGlowHandler); _target.removeEventListener(MouseEvent.ROLL_OUT, stopGlowHandler); _target.removeEventListener(Event.ENTER_FRAME, blinkHandler); _target.filters = null; _target = null; } private function startGlowHandler(evt:MouseEvent):void { _target.addEventListener(Event.ENTER_FRAME, blinkHandler, false, 0, true); } private function stopGlowHandler(evt:MouseEvent):void { _target.removeEventListener(Event.ENTER_FRAME, blinkHandler); _target.filters = null; } private function blinkHandler(evt:Event):void { if (_blur >= 20) _toggle = false; else if (_blur <= 2) _toggle = true; _toggle ? _blur++ : _blur--; var glow:GlowFilter = new GlowFilter(_color, 1, _blur, _blur, 2, 2); _target.filters = [glow]; } } }
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