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.p ng")]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.p ng")]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.pn g")]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8 private 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.gi f")] 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.gi f")] 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.CLI CK,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.CLI CK,OnMinSize); this.titleBar.addChild(this.minSizeButton); //侦听拖拽相关的事件 this.addEventListener(MouseEvent.MOUSE_MOVE,onMous eMove); this.addEventListener(MouseEvent.MOUSE_OUT,onMouse Out); this.addEventListener(MouseEvent.MOUSE_DOWN,onMous eDown); titleNormal = this.title; titleMin = this.title.substring(0, + "..."; } 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(Mo useEvent.MOUSE_UP,onMouseUp); Application.application.parent.addEventListener(Mo useEvent.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.hei ght-yPlus:theMinHeight; this.x=this.width>theMinWidth?Application.applicati on.parent.mouseX:this.x; this.y=this.height>theMinHeight?Application.applica tion.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.applicati on.parent.mouseX:this.x; break; case SIDE_RIGHT+SIDE_TOP: this.width=xPlus>theMinWidth?xPlus:theMinWidth; this.height=this.height-yPlus>theMinHeight?this.hei ght-yPlus:theMinHeight; this.y=this.height>theMinHeight?Application.applica tion.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.applicati on.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.hei ght-yPlus:theMinHeight; this.y=this.height>theMinHeight?Application.applica tion.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.mo useX; var yPosition:Number=Application.application.parent.mo useY; if(xPosition>=(point.x+this.width-mouseMargin)&&yPo sition>=(point.y+this.height-mouseMargin)) {//右下 onChangeCursor(CursorR,-9,-9); theSide=SIDE_RIGHT+SIDE_BOTTOM; this.isPopUp=false; }else if(xPosition=(poi nt.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)&&yPo sition(point.x+this.width-mouseMargin)) {//右 onChangeCursor(CursorH,-9,-9); theSide=SIDE_RIGHT; this.isPopUp=false; }else if(xPosition(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.currentCu rsorID); 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.y this.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