srecord noeq G22RegionPanel(IImageRegion region) > MetaWithChangeListeners is Swingable {
  settable transient G22Utils g22utils;
  settable BufferedImage originalImage;
  settableWithVar bool showOriginalColors = true;
  transient ImageSurface is;

  cachedVisualize {
    is = g22utils.stdImageSurface();
    varShowOriginalColors().onChangeAndNow(l0 updateImage);
    
    ret northAndCenterWithMargins(
      jcenteredline(liveValueCheckBox(varShowOriginalColors(),
        "Show original colors")),
      g22utils.wrap(is));
  }
  
  void updateImage {
    if (showOriginalColors)
      is.setImage(new CutOutRegionFromImage(region)
        .margin(10).fullImage(originalImage)!);
    else
      is.setImage(regionToBinaryImage(region));
  }
}