Swing/LineSplittingLabel のバックアップ(No.4)

class TricoloreLabel extends JComponent {
  private final GlyphVector gv;
  public TricoloreLabel(String str) {
    super();
    Font font = new Font(Font.SERIF, Font.PLAIN, 64);
    FontRenderContext frc = new FontRenderContext(null, true, true);
    gv = font.createGlyphVector(frc, str);
  }
  @Override public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int w = getWidth();
    int h = getHeight();
    g.setColor(Color.WHITE);
    g.fillRect(0,0,w,h);

    Graphics2D g2 = (Graphics2D)g.create();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
    Rectangle2D b = gv.getVisualBounds();
    Point2D.Double p = new Point2D.Double(
        b.getX() + b.getWidth()/2d, b.getY() + b.getHeight()/2d);
    AffineTransform toCenterAT = AffineTransform.getTranslateInstance(
        w/2d - p.getX(), h/2d - p.getY());

    double d = b.getHeight()/3;
    Rectangle2D.Double clip  = new Rectangle2D.Double(
        b.getX(), b.getY(), b.getWidth(), b.getHeight());
    Rectangle2D.Double clip1 = new Rectangle2D.Double(
        b.getX(), b.getY(), b.getWidth(), d);
    Rectangle2D.Double clip2 = new Rectangle2D.Double(
        b.getX(), b.getY()+2*d, b.getWidth(), d);

    Shape s = toCenterAT.createTransformedShape(gv.getOutline());

    g2.setClip(toCenterAT.createTransformedShape(clip1));
    g2.setPaint(Color.BLUE);
    g2.fill(s);

    g2.setClip(toCenterAT.createTransformedShape(clip2));
    g2.setPaint(Color.RED);
    g2.fill(s);

    g2.setClip(toCenterAT.createTransformedShape(clip));
    g2.setPaint(Color.BLACK);
    g2.draw(s);
    g2.dispose();
  }
}