JTabbedPaneのタブ文字列のあふれをフェードアウト効果に変更する

class TextOverflowFadeTabbedPane extends ClippedTitleTabbedPane {
  @Override public void insertTab(
        String title, Icon icon, Component component, String tip, int index) {
    super.insertTab(
        title, icon, component, Objects.toString(tip, title), index);
    JPanel p = new JPanel(new BorderLayout(2, 0));
    p.setOpaque(false);
    p.add(new JLabel(icon), BorderLayout.WEST);
    p.add(new TextOverflowFadeLabel(title));
    setTabComponentAt(index, p);
  }
}