ActionScript中文本字段的透明度缓动
ActionScript中文本字段的透明度缓动效果,我们将用as 代码实例文本缓动效果。
第一是使用BitmapData去绘制,然后对Bitmap进行操作,这个方法代码量稍微偏多,这里不做赘述。
第二种是使用ColorMatrixFilter过滤器。
//Code:
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package com.drore.map.view
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{
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import flash.display.Sprite;
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import flash.events.Event;
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import flash.text.TextField;
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import flash.filters.ColorMatrixFilter;
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/**
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* 动态生成鼠标提示
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* @author Dada http://www.asflex.cn
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* @version 5.0
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* @copy Drore http://www.drore.com
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*/
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public class MouseTip extends Sprite
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{
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private var txtTips:TextField = new TextField();
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public function MouseTip()
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{
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addEventListener(Event.ENTER_FRAME, init);
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}
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private function init(event:Event):void
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{
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removeEventListener(Event.ENTER_FRAME, init);
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txtTips.selectable = false;
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txtTips.tabEnabled = false;
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txtTips.mouseEnabled = false;
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txtTips.cacheAsBitmap = true;
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txtTips.multiline = false;
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//设置滤镜
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txtTips.filters=[new ColorMatrixFilter];
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addChild(txtTips);
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}
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//设置提示文字
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public function setText(txt:String):void
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{
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txtTips.text = txt;
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txtTips.width = txtTips.textWidth + 10;
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drawBg();
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}
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//绘制背景
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private function drawBg():void
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{
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graphics.clear();
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graphics.beginFill(0xF3E789, .8);
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graphics.lineStyle(1, 0xFFFF00);
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graphics.drawRoundRect( -5, -5, txtTips.textWidth + 15, txtTips.textHeight + 15, 10, 10);
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graphics.endFill();
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}
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}
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}
使用方法:
//Code:
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//鼠标提示框
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private var mtips:MouseTip = new MouseTip();
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mtips.setText("This is a test sentense.");
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//使用TweenLite对mtips进行alipa缓动
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TweenLite.to(mtips, .3, { alpha:0 } );
补充:flash教程,动画技术