打印jpg

var request:URLRequest = new URLRequest(getAbsPath("pages/" + pagePrint + "_big.jpg"));
var loader:Loader = new Loader();
loader.load(request);
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);

var frame:Sprite = new Sprite()
function completeHandler(event:Event):void {

    var picture:Bitmap = Bitmap(loader.content);
    var bitmap:BitmapData = picture.bitmapData;
    var matrix:Matrix = new Matrix();
    matrix.scale(1, 1);

    frame.graphics.beginBitmapFill(bitmap, matrix, true);
    frame.graphics.drawRect(0, 0, bitmap.width, bitmap.height);
    frame.graphics.endFill();
    addChild(frame);
    frame.visible = false;

    printPage();    
}
function printPage ():void {
    var myPrintJob:PrintJob = new PrintJob();
    var options:PrintJobOptions = new PrintJobOptions();
    options.printAsBitmap = true;

    myPrintJob.start();

    try {
        myPrintJob.addPage(frame, null, options);
    }
    catch(e:Error) {
        trace ("Had problem adding the page to print job: " + e);
    }

    try {
        myPrintJob.send();
    }
    catch (e:Error) {
        trace ("Had problem printing: " + e);    
    }
}

由于某些原因,只占图像的一部分,然后将其放大以填充整个页面。。。jpg的尺寸是1280x1656,我想打印整个jpg。。。你知道我做错了什么吗?