Окна «неправильной» формы, Java 6 & 7 ed

public class TransparentImageDialog
{
  public static void main ( String[] args )
  {
    final ImageIcon ii =
        new ImageIcon ( TransparentImageDialog.class.getResource ( "icons/girl.png" ) );

    JFrame frame = new JFrame ();

    frame.getContentPane ().add ( new JLabel( "Test text", JLabel.CENTER )
    {
      {
        setForeground ( Color.BLACK );

        MoveAdapter moveAdapter = new MoveAdapter ();
        addMouseListener ( moveAdapter );
        addMouseMotionListener ( moveAdapter );
      }

      protected void paintComponent ( Graphics g )
      {
        Graphics2D g2d = ( Graphics2D ) g;

        Composite comp = g2d.getComposite ();
        g2d.setComposite ( AlphaComposite.getInstance ( AlphaComposite.SRC_OVER, 0.5f ) );
        g2d.drawImage ( ii.getImage (), 0, 0, null );
        g2d.setComposite ( comp );

        g2d.setRenderingHint ( RenderingHints.KEY_ANTIALIASING,
            RenderingHints.VALUE_ANTIALIAS_ON );
        super.paintComponent ( g );
      }
    } );

    frame.setUndecorated ( true );
    frame.setSize ( ii.getIconWidth (), ii.getIconHeight () );
    AWTUtilities.setWindowOpaque ( frame, false );
    frame.setLocation ( 400, 300 );
    frame.setVisible ( true );
  }

  private static class MoveAdapter extends MouseAdapter
  {
    private boolean dragging = false;
    private int prevX = -1;
    private int prevY = -1;

    public void mousePressed ( MouseEvent e )
    {
      if ( SwingUtilities.isLeftMouseButton ( e ) )
      {
        dragging = true;
      }
      prevX = e.getXOnScreen ();
      prevY = e.getYOnScreen ();
    }

    public void mouseDragged ( MouseEvent e )
    {
      if ( prevX != -1 && prevY != -1 && dragging )
      {
        Window w = SwingUtilities.getWindowAncestor ( e.getComponent () );
        if ( w != null && w.isShowing () )
        {
          Rectangle rect = w.getBounds ();
          w.setBounds ( rect.x + ( e.getXOnScreen () - prevX ),
              rect.y + ( e.getYOnScreen () - prevY ), rect.width, rect.height );
        }
      }
      prevX = e.getXOnScreen ();
      prevY = e.getYOnScreen ();
    }

    public void mouseReleased ( MouseEvent e )
    {
      dragging = false;
    }
  }
}

g2d.setRenderingHint ( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );

g2d.setRenderingHint ( RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON );

UIManager.put ( SwingUtilities2.AA_TEXT_PROPERTY_KEY,
SwingUtilities2.AATextInfo.getAATextInfo ( true ) );