static BufferedImage imageToBufferedImage(Image img) {
  if (img == null || img instanceof BufferedImage) ret (BufferedImage) img;
  BufferedImage bimage = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_ARGB);
  bimage.createGraphics().drawImage(img, 0, 0, null);
  ret bimage;
}