Loading external SWF with masked content - get size of masked area

Question

I am loading an external swf using the SWFLoader component. The swf that is being loaded is masked so that only a portion is being shown. However, when it's loaded the actual size of the swf (loader.content.width && loader.content.height) is the complete swf including the masked area. Therefore, the loaded swf does not display properly in the itemrenderer Is there a way to to grab the size of the just the masked area as opposed to getting the size of the entire swf's contents (area not masked)?
One item to note that is complicating the issue, is that these are swf files that have already been created and there are many of them. In some instances, the size of the stage matches up with the size of the masked area. In other instances, the stage is larger (or possibly smaller) than the masked area movieclip as well as possibly the actual size of the movieclip (w/o the mask).
I am currently loading the external swf in using a Loader. Once loaded, I make a copy (screen shot) of the swf by creating a bmp of the loader.content.This is done as I don't want to have any animations being shown on screen at this moment. I am setting the size of the bmp using using loader.content.width & loader.content.height. I then set the SWFLoader.source to the bitmap.

Answer 1

Here's the code I am using to load the swf:
     <fx:Script>
            <![CDATA[
        protected  function application1_applicationCompleteHandler(event:FlexEvent):void {
             loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onSWFLoaded);
             loader.load(new URLRequest("c:\\Flex Testing\\FA warns Mr. Jones.swf"),  context);
        private function  onSWFLoaded(event:Event):void {
            bmData=new  BitmapData(loader.content.width, loader.content.height, true, 0x990000);
             bmData.draw(loader.content, new Matrix());
            bmp=new  Bitmap(bmData);
            swfLoader.source=bmp;
             addElement(swfLoader);
            with (swfLoader)
                setStyle('verticalAlign', "middle");
                 setStyle('horizontalAlign', 'center');
                 verticalCenter=0;
                horizontalCenter=0
                 scaleContent=true;
                maintainAspectRatio=true;
                 addEventListener(MouseEvent.CLICK,onClick,false,0,true)
                 useHandCursor = true;
                buttonMode = true;
                 width=200;
                height=200;
             loader.unload()
            loader=null;
           ]]>
</fx:Script>