实现最大化、最小化、缩放功能的TitleWindow

      前段时间在做flex的一个文档在线浏览时用到了需要TitleWindow的缩放以及最大化、最小化功能，于是自己就查看资料和参考各位大虾的代码，自己实现了下：

package com.palm.base.components{import flash.events.Event;import flash.events.EventDispatcher;import flash.events.MouseEvent;import flash.geom.Point;import flash.geom.Rectangle;import mx.containers.TitleWindow;import mx.controls.Button;import mx.controls.LinkButton;import mx.core.Application;import mx.managers.CursorManager;import org.adm.graphics.ico.Icon;public class MyTitleWindow extends TitleWindow{public function MyTitleWindow(){super();this.showCloseButton=true;}protected var maxSizeButton:Button; //最大化按钮[Embed("/assets/icon/titleWinIcon/WindowMaxButton.gif")]private var IconMaxSize:Class;//载入最大化图标[Embed("/assets/icon/titleWinIcon/Buttonmaximize.png")]private var mouseOnIconMaxSize:Class;//载入最大化图标[Embed("/assets/icon/titleWinIcon/WindowMaxButton2.gif")]private var mouseupIconMaxSize:Class;//载入最大化图标protected var minSizeButton:Button; //最小化按钮[Embed("/assets/icon/titleWinIcon/WindowMinButton.gif")]private var IconMinSize:Class;//载入最小化图标[Embed("/assets/icon/titleWinIcon/Buttonminimize.png")]private var mouseOnIconMinSize:Class;//载入最小化图标[Embed("/assets/icon/titleWinIcon/WindowMinButton2.gif")]private var mouseupIconMinSize:Class;//载入最小化图标[Embed("/assets/icon/titleWinIcon/Buttonrestore.png")]private var Iconhuany:Class;//载入还原图标//调整TitleWindow大小private var mouseMargin:Number=4;//响应范围//设置光标的位置值 右上：3 右下：6 左下：11 左上8private var theSide:Number=0;private var SIDE_OTHER:Number=0;private var SIDE_TOP:Number=1;private var SIDE_RIGHT:Number=2;private var SIDE_LEFT:Number=7;private var SIDE_BOTTOM:Number=4;private var isReSize:Boolean;//是否允许缩放private var theOldPoint:Point;//改变大小前窗口的x，y坐标private var theMinWidth:Number=200;//窗口最小宽度private var theMinHeight:Number=200;//窗口最大高度private var theOldWidth:Number;//最大最小化时的宽private var theOldHeight:Number;//最大最小化时的高private var theStatus:int=0;//窗口状态，0正常 1最大化 2最小化；private var titleNormal:String;//正常状态下的标题private var titleMin:String;//最小化时的标题//当前鼠标光标类public var currentType:Class=null;//鼠标光标图标[Embed("/assets/icon/titleWinIcon/resizeCursorH.gif")]private var CursorH:Class;[Embed("/assets/icon/titleWinIcon/resizeCursorTLBR.gif")]private var CursorR:Class;[Embed("/assets/icon/titleWinIcon/resizeCursorTRBL.gif")]private var CursorL:Class;[Embed("/assets/icon/titleWinIcon/resizeCursorV.gif")]private var CursorV:Class;private var CursorNull:Class=null;override protected function createChildren():void{super.createChildren();//创建最大化按钮this.maxSizeButton=new LinkButton();this.maxSizeButton.width=this.maxSizeButton.height=16;this.maxSizeButton.y=6;this.maxSizeButton.setStyle("upIcon", IconMaxSize);this.maxSizeButton.setStyle("overIcon", mouseOnIconMaxSize);this.maxSizeButton.setStyle("downIcon", mouseupIconMaxSize);//添加最大化事件this.maxSizeButton.addEventListener(MouseEvent.CLICK,OnMaxSize);this.titleBar.addChild(this.maxSizeButton);//创建最小化按钮this.minSizeButton=new LinkButton();this.minSizeButton.width=this.minSizeButton.height=16;this.minSizeButton.y=6;this.minSizeButton.setStyle("upIcon", IconMinSize);this.minSizeButton.setStyle("overIcon", mouseOnIconMinSize);this.minSizeButton.setStyle("downIcon", mouseupIconMinSize);//添加最小化事件this.minSizeButton.addEventListener(MouseEvent.CLICK,OnMinSize);this.titleBar.addChild(this.minSizeButton);//侦听拖拽相关的事件this.addEventListener(MouseEvent.MOUSE_MOVE,onMouseMove);this.addEventListener(MouseEvent.MOUSE_OUT,onMouseOut);this.addEventListener(MouseEvent.MOUSE_DOWN,onMouseDown);titleNormal = this.title;titleMin = this.title.substring(0, 8) + "...";}protected function OnMaxSize(e:MouseEvent):void{if(theStatus == 0){onSaveRestore();winMaxSize();}else if(theStatus == 2){winMaxSize();}else if(theStatus == 1){onGetRestore();}}protected function OnMinSize(e:MouseEvent):void{if(theStatus != 2){if(theStatus == 0){onSaveRestore();}winMinSize();}else{onGetRestore();}}override protected function startDragging(event:MouseEvent):void{//设置TitleWindow的拖动的矩形区域var rt:Rectangle = new Rectangle(0, 0, this.parent.width-this.width, this.parent.height-this.height);this.startDrag(false, rt);//设置可以拖动的矩形区域this.addEventListener(MouseEvent.MOUSE_UP, mouseUpEvent);}protected function mouseUpEvent(event:MouseEvent):void{this.stopDrag();this.removeEventListener(MouseEvent.MOUSE_UP, mouseUpEvent);}override protected function layoutChrome(unscaledWidth:Number, unscaledHeight:Number):void{super.layoutChrome(unscaledWidth,unscaledHeight);//设置两个新添的按钮的位置this.maxSizeButton.x=this.titleBar.width-43;this.minSizeButton.x=this.titleBar.width-60;//调整状态文本的位置，左移一段位置this.statusTextField.x-=32;}//调整大小private function onMouseUp(event:MouseEvent):void{if(isReSize){Application.application.parent.removeEventListener(MouseEvent.MOUSE_UP,onMouseUp);Application.application.parent.removeEventListener(MouseEvent.MOUSE_MOVE,onResize);isReSize=false;//dispatchEvent(new Event(TITLEWINDOW_RESIZE));}onChangeCursor(CursorNull);}private function onMouseDown(event:MouseEvent):void{if(theSide!=0 && theSide != 5){isReSize=true;Application.application.parent.addEventListener(MouseEvent.MOUSE_UP,onMouseUp);Application.application.parent.addEventListener(MouseEvent.MOUSE_MOVE,onResize);var point:Point=new Point();point=this.localToContent(point);theOldPoint=point;}}private function onResize(event:MouseEvent):void{if(isReSize){var xPlus:Number=Application.application.parent.mouseX-this.x;var yPlus:Number=Application.application.parent.mouseY-this.y;switch(theSide){case SIDE_RIGHT+SIDE_BOTTOM:this.width=xPlus>theMinWidth?xPlus:theMinWidth;this.height=yPlus>theMinHeight?yPlus:theMinHeight;break;case SIDE_LEFT+SIDE_TOP:this.width=this.width-xPlus>theMinWidth?this.width-xPlus:theMinWidth;this.height=this.height-yPlus>theMinHeight?this.height-yPlus:theMinHeight;this.x=this.width>theMinWidth?Application.application.parent.mouseX:this.x;this.y=this.height>theMinHeight?Application.application.parent.mouseY:this.y;break;case SIDE_LEFT+SIDE_BOTTOM:this.width=this.width-xPlus>theMinWidth?this.width-xPlus:theMinWidth;this.height=yPlus>theMinHeight?yPlus:theMinHeight;this.x=this.width>theMinWidth?Application.application.parent.mouseX:this.x;break;case SIDE_RIGHT+SIDE_TOP:this.width=xPlus>theMinWidth?xPlus:theMinWidth;this.height=this.height-yPlus>theMinHeight?this.height-yPlus:theMinHeight;this.y=this.height>theMinHeight?Application.application.parent.mouseY:this.y;break;case SIDE_RIGHT:this.width=xPlus>theMinWidth?xPlus:theMinWidth;break;case SIDE_LEFT:this.width=this.width-xPlus>theMinWidth?this.width-xPlus:theMinWidth;this.x=this.width>theMinWidth?Application.application.parent.mouseX:this.x;break;case SIDE_BOTTOM:this.height=yPlus>theMinHeight?yPlus:theMinHeight;break;case SIDE_TOP:this.height=this.height-yPlus>theMinHeight?this.height-yPlus:theMinHeight;this.y=this.height>theMinHeight?Application.application.parent.mouseY:this.y;break;}}}private function onMouseOut(event:MouseEvent):void{if(!isReSize&&this.theStatus==0){theSide=0;onChangeCursor(CursorNull);this.isPopUp=true;}}private function onMouseMove(event:MouseEvent):void{if(!theStatus){var point:Point=new Point();point=this.localToGlobal(point);var xPosition:Number=Application.application.parent.mouseX;var yPosition:Number=Application.application.parent.mouseY;if(xPosition>=(point.x+this.width-mouseMargin)&&yPosition>=(point.y+this.height-mouseMargin)){//右下onChangeCursor(CursorR,-9,-9);theSide=SIDE_RIGHT+SIDE_BOTTOM;this.isPopUp=false;}else if(xPosition<=(point.x+mouseMargin)&&yPosition<=(point.y+mouseMargin)){//左上onChangeCursor(CursorR,-9,-9);theSide=SIDE_LEFT+SIDE_TOP;this.isPopUp=false;}else if(xPosition<=(point.x+mouseMargin)&&yPosition>=(point.y+this.height-mouseMargin)){//左下onChangeCursor(CursorL,-9,-9);theSide=SIDE_BOTTOM+SIDE_LEFT;this.isPopUp=false;}else if(xPosition>=(point.x+this.width-mouseMargin)&&yPosition<=(point.y+mouseMargin)){//右上onChangeCursor(CursorL,-9,-9);theSide=SIDE_RIGHT+SIDE_TOP;this.isPopUp=false;}else if(xPosition>(point.x+this.width-mouseMargin)){//右onChangeCursor(CursorH,-9,-9);theSide=SIDE_RIGHT;this.isPopUp=false;}else if(xPosition<(point.x+mouseMargin)){//左onChangeCursor(CursorH,-9,-9);theSide=SIDE_LEFT;this.isPopUp=false;}else if(yPosition<(point.y+mouseMargin)){//上onChangeCursor(CursorV,-9,-9);theSide=SIDE_TOP;this.isPopUp=false;}else if(yPosition>(point.y+this.height-mouseMargin)){//下onChangeCursor(CursorV,-9,-9);theSide=SIDE_BOTTOM;this.isPopUp=false;}else{onChangeCursor(CursorNull);if(!isReSize&&theStatus==0){theSide=0;this.isPopUp=true;}}event.updateAfterEvent();}}private function onChangeCursor(type:Class,xOffset:Number=0,yOffset:Number=0):void{if(currentType!=type){currentType=type;CursorManager.removeCursor(CursorManager.currentCursorID);if(type!=null){CursorManager.setCursor(type,2,xOffset,yOffset);}}}private function onSaveRestore():void{var point:Point=new Point();theOldPoint=this.localToGlobal(point);theOldWidth=this.width;theOldHeight=this.height;}private function onGetRestore():void{this.x=theOldPoint.x;this.y=theOldPoint.ythis.width=theOldWidth;this.height=theOldHeight;this.theStatus = 0;setWinIcon(theStatus);this.title = titleNormal;}private function winMaxSize():void{//设置为最大化状态this.x=0;this.y=0;this.height = this.parent.height;this.width = this.parent.width;this.theStatus = 1;setWinIcon(theStatus);this.title = titleNormal;}private function winMinSize():void{this.width = 200;this.height = 30;this.x = 0;this.y = this.parent.height - 30;this.theStatus = 2;setWinIcon(theStatus);this.title = titleMin;}private function setWinIcon(status:int):void{switch(status){case 0:this.minSizeButton.setStyle("upIcon", IconMinSize);this.minSizeButton.setStyle("overIcon", mouseOnIconMinSize);this.minSizeButton.setStyle("downIcon", mouseupIconMinSize);this.maxSizeButton.setStyle("upIcon", IconMaxSize);this.maxSizeButton.setStyle("overIcon", mouseOnIconMaxSize);this.maxSizeButton.setStyle("downIcon", mouseupIconMaxSize);break;case 1:this.maxSizeButton.setStyle("upIcon", Iconhuany);this.maxSizeButton.setStyle("overIcon", Iconhuany);this.maxSizeButton.setStyle("downIcon", Iconhuany);this.minSizeButton.setStyle("upIcon", IconMinSize);this.minSizeButton.setStyle("overIcon", mouseOnIconMinSize);this.minSizeButton.setStyle("downIcon", mouseupIconMinSize);break;case 2:this.minSizeButton.setStyle("upIcon", Iconhuany);this.minSizeButton.setStyle("overIcon", Iconhuany);this.minSizeButton.setStyle("downIcon", Iconhuany);this.maxSizeButton.setStyle("upIcon", IconMaxSize);this.maxSizeButton.setStyle("overIcon", mouseOnIconMaxSize);this.maxSizeButton.setStyle("downIcon", mouseupIconMaxSize);break;}}}} 

效果图：

 

 

附：http://download.csdn.net/source/2841295