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!7

cm LetterboxOnScreen2 > DynPrintLogAndEnabled {
  switchable double interval = 5.0; // 5 fps
  
  transient Map<O, JWindow> alwaysOnTopWindows = syncMap();
  
  void cleanMeUp_windows {
    disposeWindows(getValuesAndClear(alwaysOnTopWindows));
  }
  
  start {
    dm_reloadOnFieldChange interval();
    dm_doEvery(interval, r doIt);
  }
  
  void doIt {
    if (!enabled) ret;
    var rect = screenBounds(1);
    if (rect == null) ret;
    
    var img = shootScreen2(rect);
    var ii = IntegralImage(img);
    
    new Var<Rect> theBox;
    stepAllWithStats(new ULetterbox1().run(img, setVarWithConversion toRect(theBox)));
    print(imageBounds(img) + " - " + theBox!);
    
    //showImageWithSelection(img, theBox!);
    
    var box1 = rect(rect.x, rect.y, rect.w, theBox->y);
    var box2 = rectFromPoints(rect.x, rect.y+theBox->y2(), rect.x2(), rect.y+theBox->y2());
    printVars(+box1, +box2);
    positionMarkerWindow(0, box1, withAlpha(.2, Color.green));
    positionMarkerWindow(1, box2, withAlpha(.2, Color.green));
  }
  
  JWindow getOrCreateMarkerWindow(O key) {
    ret swing(() ->
      syncMapGetOrCreate(alwaysOnTopWindows, key,
        () -> makeAlwaysOnTopTranslucentWindow()));
  }
  
  void positionMarkerWindow(int iWindow, Rect box, Color color) {
    awt {
      JWindow w = getOrCreateMarkerWindow(iWindow);
      setBounds(w, box);
      w.setBackground(color);
      w.setVisible(true);
     }
  }
}