/**
   * Create a image according to the current state, simple and silly ...
   *
   * @param event the report event.
   */
  public void pageStarted(final ReportEvent event) {
    final BufferedImage image = new BufferedImage(150, 50, BufferedImage.TYPE_INT_ARGB);
    final Graphics2D g2 = image.createGraphics();
    final JButton bt = new JButton("A Button");
    bt.setSize(90, 20);
    final JRadioButton radio = new JRadioButton("A radio button");
    radio.setSize(100, 20);

    g2.setColor(Color.darkGray);
    bt.paint(g2);
    g2.setColor(Color.blue);
    g2.setTransform(AffineTransform.getTranslateInstance(20, 20));
    radio.paint(g2);
    g2.setTransform(AffineTransform.getTranslateInstance(0, 0));
    g2.setPaint(Color.green);
    g2.setFont(new Font("Serif", Font.PLAIN, 10));
    g2.drawString(
        "You are viewing a graphics of JFreeReport on index " + event.getState().getCurrentRow(),
        10,
        10);
    g2.dispose();
    try {
      functionValue = new DefaultImageReference(image);
    } catch (IOException e) {
      functionValue = null;
    }
  }