please include function showImage.

static ImageSurface showImagePixelatedZoomed(double zoom, MakesBufferedImage img) {
  ret showImagePixelatedZoomed(zoom, img.getBufferedImage());
}

static ImageSurface showImagePixelatedZoomed(double zoom, BufferedImage img) {
  ImageSurface is = new(img);
  imageSurface_pixelated(is);
  is.setZoom(zoom);
  JFrame frame = showPackedFrame(jscroll(is));
  moveToTopRightCorner(frame);
  frameIcon(frame, showImage_defaultIcon);
  ret is;
}

Began life as a copy of #1019593