flex在网上阅卷项目中的应用

在费劲唇舌后，老大终于同意用flex开发阅卷系统了。不容易呀（讲了n多的利弊）。估计也是看我仅用周末两天的时间就搞定了前台阅卷打分程序才终于松口了。基本结构flex+java+mysql开发（外加网上找了个skin）

下面就要陆陆续续的完善了。其实阅卷客户端很简单无非就是往图像上打分，先定义一个容器作为画布，然后定义一个画笔作为接口，画圆，划线，分数作为实现

本来想用BitmapData合并图像，但由于多张图像太大合并不了只得用多个image控件实现（BitmapData最大宽高位2880像素）不过对于小图还是蛮好用的

 package pizza.image { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Loader; import flash.events.*; import flash.geom.Matrix; import flash.net.URLRequest; import mx.controls.Alert; import mx.core.UIComponent; import pizza.utils.ArrayUtils; public class MergeImage extends UIComponent { private var _imagePath:Array = new Array;//图像路径数组 private var count:Number = 0;//计数器 private var imageArray:Array = new Array;//图像高度数组 private var imageHeight:Number = 0;//图像高度 private var loader:Loader = new Loader; private var _finallBitMap:BitmapData; private var checkMerge:Boolean = true; //构造方法初始化图片 public function MergeImage(imagePath:Array){ this._imagePath = imagePath; loadingImage(count); this.addEventListener("completeEvent",mergCompleteHandler); } //加载图像 private function loadingImage(index:Number):void{ //定义加载图像完成时触发事件 if(index<_imagePath.length){ loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadCompleteHandler); loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); var request:URLRequest = new URLRequest(_imagePath[index]); loader.load(request); }else{ loader.contentLoaderInfo.removeEventListener(Event.COMPLETE,function():void{trace("load commplete!")}); this.dispatchEvent(new Event("completeEvent")); } } private function loadCompleteHandler(event:Event):void { trace("加载第" + (count + 1) + "图片"); count++;//累加计数器 var loader:Loader = Loader(event.target.loader); var image:Bitmap = Bitmap(loader.content); imageArray.push(image); loadingImage(count); } private function mergCompleteHandler(event:Event):void{ try{ var aCopy:Array = imageArray.concat(); aCopy.sortOn("width",Array.NUMERIC|Array.DESCENDING); //trace(ArrayUtilities.sumObject(aCopy,"height")); var width:Number = Bitmap(ArrayUtils.maxObject(aCopy,"width")).width; var height:Number = ArrayUtils.sumObject(aCopy,"height"); _finallBitMap = new BitmapData(width,height); for(var i:Number = 0;i < imageArray.length; i ++){ var oriBitMap:BitmapData = new BitmapData(Bitmap(imageArray[i]).width,Bitmap(imageArray[i]).height); oriBitMap.draw(imageArray[i]); if (i>0){ var myMatrix:Matrix = new Matrix(); myMatrix.translate(0,imageArray[i-1].height); } _finallBitMap.draw(oriBitMap,myMatrix); } }catch(e:Error){ trace(e.message); checkMerge = false; } if (checkMerge){ this.dispatchEvent(new Event("allCompleteEvent")); } } private function ioErrorHandler(event:IOErrorEvent):void { Alert.show("Unable to load image: " + imageArray[count]); checkMerge = false; } public function get finallBitMap():BitmapData{ return this._finallBitMap; } } }