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<?xml version="1.0"
encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:astion="astions.*" minWidth="955"
minHeight="600" creationComplete="init()"
xmlns:astion1="astion.*"> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> <s:Parallel id="imgEffect"
target="{showPic}"> <s:Move xFrom="0"
xTo="0"
yFrom="0" yTo="0" duration="1000"
/> <s:Scale scaleXFrom="1.0"
scaleXTo="1.5"
scaleYFrom="1.0"
scaleYTo="1.5"
duration="1000"
/> </s:Parallel> </fx:Declarations> <fx:Script> <![CDATA[ import
mx.controls.Alert; import
mx.events.MoveEvent; import
mx.graphics.ImageSnapshot; import
mx.graphics.codec.JPEGEncoder; private
var _file:FileReference; // 单个图片列表 private
var _fileList:FileReferenceList // 批量图片列表 private
var isChoice:Boolean; // 是否裁剪图片 // private var imgData:BitmapData; // 图片bitmap数据 private
function init():void { _file = new
FileReference(); _fileList = new
FileReferenceList(); _file.addEventListener(Event.SELECT, onSelect); _file.addEventListener(Event.COMPLETE, completeHandle); box.visible = false; isChoice = false; group_all.visible = false; } // 单击选择时 private
function select():void { var
allTypes:FileFilter = new
FileFilter("图片类型（*.jpg; *.jpeg; *.png; *.gif）", "*.jpg; *.jpeg; *.png; *.gif"); _file.browse([allTypes]); } // 图片被选中时 private
function onSelect(e:Event):void { _file.load(); } // 图片加载完成时 private
function completeHandle(e:Event):void { showPic.source = _file.data; showPic.width = 400; showPic.height = 400; } // 图片裁剪 private
function cut():void { if( showPic.source != null) { isChoice = true; box.visible = true; group_all.visible = true; uncheckArea(); } } // 裁剪图片时，未选中部分变暗 private
function uncheckArea():void
{ // 盒子的宽度 var
boxWidth:int
= box.boxWidth; // 盒子的高度 var
boxHeight:int
= box.boxHeight; // 盒子的坐标 var
originX:int
= box.x; var
originY:int
= box.y; // 图片显示区域的高，宽 var
imgHeight:int
=showPic.height; var
imgWidth:int
= showPic.width; //bg_1 加上10PX像素文字的高度 bg_1.height = originY -30; bg_1.width = imgWidth; bg_1.x = 0; bg_1.y = 0; // bg_2 bg_2.height = boxHeight; bg_2.width = imgWidth - (originX + boxWidth); bg_2.x = originX + boxWidth; bg_2.y = originY-30; // bg_3 减去10PX像素文字的高度 减去 30PX按钮栏的高度 bg_3.height = imgHeight - (originY +boxHeight-30); bg_3.width = bg_1.width = imgWidth; bg_3.x = 0; bg_3.y = originY + boxHeight - 30; // bg_4 bg_4.height = boxHeight; bg_4.width = originX; bg_4.x = 0; bg_4.y = originY - 30; // bg_2.height = bg_4.height = imgHeight - (bg_3.height + bg_1.height); } // 单击预览时. 返回被选中的区域 bitmapdata; private
function preview():BitmapData { showSmallPic.source = ""; var
bmpData:BitmapData = ImageSnapshot.captureBitmapData(showPic); var
re:Rectangle = new
Rectangle(box.x, box.y, box.boxWidth, box.boxHeight); var
byte:ByteArray = bmpData.getPixels(re); // 已经定义为全局变量，方便数据的存储操作。 // var imgData:BitmapData = new BitmapData(box.boxWidth, box.boxHeight); var
imgData:BitmapData = new
BitmapData(box.boxWidth, box.boxHeight); //当前的bytearray.position为最大长度，要设为从0开始读取 byte.position = 0; var
imgRe:Rectangle = new
Rectangle(0, 0, box.boxWidth, box.boxHeight); imgData.setPixels(imgRe, byte); showSmallPic.source = new
Bitmap(imgData); return
imgData; /* var bmpData_2:BitmapData = new BitmapData(100, 100); var p:Point = new Point(40, 40); var area:Rectangle = new Rectangle(0, 0, 100, 100); // bmpData_2.draw(bmpData, new Matrix()); bmpData_2.copyPixels(bmpData, area, p); var bmp:Bitmap = new Bitmap(bmpData_2); showSmallPic.source = bmp; */ } // 图片保存 private
function save():void { var
imgData:BitmapData = preview(); if(!isChoice) { Alert.show("没有预览图片", "提示信息"); return; } if(imgData != null) { var
file:FileReference = new
FileReference(); var
date:Date = new Date(); var
ba:ByteArray = new
JPEGEncoder().encode(imgData); file.save(ba, date.fullYear.toString() + date.month.toString() + date.day.toString() + date.milliseconds.toString() + ".jpg"); } else
{ Alert.show("保存出错！请重试", "提示信息"); } } protected
function showPic_clickHandler(event:MouseEvent):void { // TODO Auto-generated method stub // imgEffect.play(null, false); showPic.width = 400; showPic.height = 400; showPic.setStyle("backgroundAlpha", 0.6); showPic.graphics.lineStyle(1, 0, 100); showPic.graphics.lineTo(100, 0); showPic.graphics.lineTo(100, 50); showPic.graphics.lineTo(0, 50); showPic.graphics.lineTo(0, 0); } // 图片修改时防止操作图片的界限 protected
function box_moveHandler():void { // 当选区X坐标小于图片的X坐标时 左部 if(box.x < showPic.x) { box.x = showPic.x; } // 当选区Y坐标小于图片的Y坐标时 顶部 if(box.y < (showPic.y +30
)) { box.y = showPic.y +30; } // 当选区X坐标 大于图片X坐标时 右部 if((box.x + box.boxWidth) > (showPic.x + showPic.width)) { box.x = showPic.x + showPic.width - box.boxWidth } // 当选区Y坐标大于图片Y坐标时 底部 if((box.y + box.boxHeight) > (showPic.y + showPic.height +30)) { box.y = showPic.y + showPic.height - box.boxHeight + 30; } // 当选区的高度大于图片的高度时 if(box.boxHeight > showPic.height) { box.boxHeight = showPic.height; } // 当选区的宽度大于图片的宽度时 if(box.boxWidth > showPic.width) { box.boxWidth = showPic.width; } // 未选中区域变色 uncheckArea(); } ]]> </fx:Script> <s:layout> <s:BasicLayout /> </s:layout> <s:Group id="group_all"
depth="2" y="30" x="0"> <s:Rect id="bg_1"
x="0" y="0" width="100"
height="80"> <s:fill> <s:SolidColor color="#333"
alpha="0.6"
/> </s:fill> </s:Rect> <s:Rect id="bg_2"
x="0" y="0" width="100"
height="80"> <s:fill> <s:SolidColor color="#333"
alpha="0.6"
/> </s:fill> </s:Rect> <s:Rect id="bg_3"
x="0" y="0" width="100"
height="80"> <s:fill> <s:SolidColor color="#333"
alpha="0.6"
/> </s:fill> </s:Rect> <s:Rect id="bg_4"
x="0" y="0" width="100"
height="80"> <s:fill> <s:SolidColor color="#333"
alpha="0.6"
/> </s:fill> </s:Rect> </s:Group> <astion1:ScaleBox id="box"
x="130" y="180" width="40" height="40"
depth="3" move="box_moveHandler()"
resize="box_moveHandler()"
/> <mx:VBox verticalGap="0"
borderVisible="false"> <mx:HBox> <s:Button label="选择图片"
click="select()"
width="80" height="30"
useHandCursor="true"
buttonMode="true"
styleName="btnStyle"
/> <s:Button label="图片裁剪"
click="cut()"
width="80" height="30"
useHandCursor="true"
buttonMode="true"
styleName="btnStyle"
/> <s:Button label="预览"
click="preview()"
width="80" height="30"
useHandCursor="true"
buttonMode="true"
styleName="btnStyle"
/> <s:Button label="另存本地"
click="save()"
width="80" height="30"
useHandCursor="true"
buttonMode="true"
styleName="btnStyle"
/> </mx:HBox> <mx:HBox width="540"
height="400"
id="container_clip"> <s:Image id="showPic"
y="30" x="0" width="400"
height="400"
click="showPic_clickHandler(event)"
/> <s:Image id="showSmallPic"
x="440" width="120"
height="120"
/> </mx:HBox> <mx:HBox> </mx:HBox> </mx:VBox> <fx:Style> .btnStyle { borderVisible : true; textAlign : center; verticalAlign : center; lineHeight : 30px; fontFamily : "宋体", "微软雅黑"; } .t_6 { backgroundColor : #333; backgroundAlpha : 0.6; } </fx:Style></s:Application> |
源码下载地址： http://pan.baidu.com/s/1cT1fS
很抱歉的说，现在没有时间写博客，怕自己忘记写了，还得继续努力，过段时间再过来修改
原文：http://www.cnblogs.com/xxjudfc/p/3661916.html