private Dimension getMainPanelPreferredSize(Dimension superPreferredSize){
    if((myHorizontalMargin > 0) && (myVerticalMargin > 0)){
      Dimension screenSize = ScreenUtil.getMainScreenBounds().getSize();
      Dimension preferredSize = superPreferredSize;
      Dimension maxSize = new Dimension(screenSize.width - myHorizontalMargin, screenSize.height - myVerticalMargin);
      int width = Math.min(preferredSize.width, maxSize.width);
      int height = Math.min(preferredSize.height, maxSize.height);
      if(height < preferredSize.height){
        width = Math.min(width + 50, maxSize.width); // to disable horizontal scroller
      }
      preferredSize = new Dimension(width, height);
      return preferredSize;
    }
    else{
      return superPreferredSize;
    }
  }
private Dimension getMainPanelPreferredSize(Dimension superPreferredSize)