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!7

cmodule OCR {
  transient ImageSurface is;
  
  start {
    setMainDesktopPane(null); // separate frames is less confusing
  }
  
  visual
    withCenteredButtons(
      jscroll(is = imageSurfaceWithStandardOperations()),
      "Invert", rThread { invertImageSurface(is) },
      "Recognize", rThread recognize);

  void recognize {
    new OCRRecognizeAndTeach(is.getImage());
  }
  
  // API
  
  SimpleRecognizer recognizer() enter {
    ret filledSimpleRecognizer_cached();
  }
}