as3 加载进来的swf进行缩放

private function swfComHdl(_loader:Loader, _data:*= null){
			frameLder = _loader;
			gameMC = frameLder.content as MovieClip;
			viewMc["container_mc"]["container_mc"].addChild(gameMC);
			//trace("src.view.LoadSwfShell类 ->swfComHdl()  加载swf成功  " + gameMC);
			//swf实际尺寸
			var oldWidth:Number = frameLder.contentLoaderInfo.content.width;
			var oldHeight:Number = frameLder.contentLoaderInfo.content.height;
			//swf原舞台尺寸
			var stageWidth:Number = frameLder.contentLoaderInfo.width;
			var stageHeight:Number = frameLder.contentLoaderInfo.height;

			var nowWidth:Number =viewMc["container_mc"]["mask_mc"].width;
			var nowHeight:Number =viewMc["container_mc"]["mask_mc"].height;

			////trace("src.Main ->swfComHdl()  frameLder  ",Const.stageWidth , stageWidth , nowHeight / stageHeight);
//			//trace(frameLder.contentLoaderInfo.content.width,"被加载进来的宽度");
			if (nowWidth / stageWidth > nowHeight / stageHeight){
				////trace(nowHeight / stageHeight, "大于比例");
				gameMC.scaleX = gameMC.scaleY = nowHeight / stageHeight;
				gameMC.x = (nowWidth / stageWidth - nowHeight / stageHeight) * stageWidth / 2;

			}else if (nowWidth / stageWidth< nowHeight / stageHeight){
				////trace(nowWidth/stageWidth, "小于比例");
				gameMC.scaleX = gameMC.scaleY = nowWidth / stageWidth;
				gameMC.y = (nowHeight / stageHeight - nowWidth / stageWidth) * stageHeight / 2;
				//gameMC.y = (nowHeight -gameMC.height)  / 2;
			}else{
				////trace("相同",nowHeight/stageHeight)
				gameMC.scaleX=gameMC.scaleY= nowHeight/stageHeight;
			}
			Const.root_mc["isShowMLoading"](false);

			//getAllBtn();
			//viewMc.addChild(gameMC);
			//gameMC.addEventListener(Event.ENTER_FRAME, gameEFHdl);

			//MyEventDispatcher.getInstance().dispatchEvent(new MyEvent(MyEvent.DTDISPATHCDATA,"SystemIdleMode_KeepAwake"));
		}