EncodedImage imagenCargandoPortada = (EncodedImage) fetchResourceFile().getImage("magazineEscala.png");;
Image roundMask = Image.createImage(imagenCargandoPortada.getWidth(), imagenCargandoPortada.getHeight(), 0xff000000);
Graphics gr = roundMask.getGraphics();
gr.setColor(0xffffff);
gr.setAntiAliased(true);
gr.fillRoundRect(0, 0, imagenCargandoPortada.getWidth(), imagenCargandoPortada.getHeight(), 60, 60);
URLImage.ImageAdapter ada = URLImage.createMaskAdapter(roundMask);
URLImage imagen = URLImage.createToFileSystem(imagenCargandoPortada
, directory
, urlAdress
, ada);
Image imgFlip = imagen.flipHorizontally(true);