Swing/TransparentFrame のバックアップ(No.17)

JPanel p1 = new JPanel();
p1.setOpaque(false);

JPanel p2 = new JPanel() {
  @Override protected void paintComponent(Graphics g) {
    //super.paintComponent(g);
    g.setColor(new Color(100,50,50,100));
    g.fillRect(0,0,getWidth(), getHeight());
  }
};

JPanel p3 = new JPanel() {
  @Override protected void paintComponent(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    //g2.setPaint(new Color(100,120,100,100));
    g2.setPaint(texture);
    g2.fillRect(0,0,getWidth(),getHeight());
    //int cs = 4;
    //for(int i=0;i*cs<getWidth();i++) {
    //  for(int j=0;j*cs<getHeight();j++) {
    //    if((i+j)%2==0) g2.fillRect(i*cs, j*cs, cs, cs);
    //  }
    //}
  }
};

protected JInternalFrame createFrame(JPanel panel) {
  MyInternalFrame frame = new MyInternalFrame();
  if(panel!=null) {
    frame.setContentPane(panel);
    //JButton button = new JButton("button");
    //button.setOpaque(false);
    panel.add(new JLabel("label"));
    panel.add(new JButton("button"));
  }
  desktop.add(frame);
  frame.setOpaque(false);
  frame.setVisible(true);
  //......