Swing/RadioButtonMenuItemIcon のバックアップ(No.3)

//com.sun.java.swing.plaf.windows.WindowsIconFactory.java
class RadioButtonMenuItemIcon1 implements Icon, UIResource, Serializable {
  @Override public void paintIcon(Component c, Graphics g, int x, int y) {
    AbstractButton b = (AbstractButton) c;
    ButtonModel model = b.getModel();
    if(b.isSelected()) {
      Graphics2D g2 = (Graphics2D)g;
      g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
      g2.fillRoundRect(x+3,y+3, getIconWidth()-6, getIconHeight()-6, 4, 4);
      g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
    }
  }
  @Override public int getIconWidth()  { return 12; }
  @Override public int getIconHeight() { return 12; }
}
class RadioButtonMenuItemIcon2 implements Icon, UIResource, Serializable {
  @Override public void paintIcon(Component c, Graphics g, int x, int y) {
    AbstractButton b = (AbstractButton) c;
    ButtonModel model = b.getModel();
    if(b.isSelected()) {
      //g.fillRoundRect(x+3,y+3, getIconWidth()-6, getIconHeight()-6, 4, 4);
      g.fillOval(x+2,y+2, getIconWidth()-5, getIconHeight()-5);
      //g.fillArc(x+2,y+2,getIconWidth()-5, getIconHeight()-5, 0, 360);
    }
  }
  @Override public int getIconWidth()  { return 12; }
  @Override public int getIconHeight() { return 12; }
}