static class ShowBigText {

  S fontID = "#1000993";  // Brother Deluxe Font

  Color background = Color.white;

  Color foreground = Color.black;

  S text = "test";

  ImageSurface is;

  Font font;

  S title = "JavaX";

  // thread-safe

  void showText(final S text) {

    swing {

      ShowBigText.this.text = text;

      if (is == null) {

        font = loadFont(fontID);

        BufferedImage img = makeImage();

        is = showImage_centered(img, title);

        moveToTopRightCorner(getFrame(is));

      }

      getFrame(is).setTitle(title);

      is.setImage(makeImage());

    }

  }

  BufferedImage makeImage() {  

    // TODO: dispose old image?

    BufferedImage img = new BufferedImage(200, 60, BufferedImage.TYPE_INT_RGB);

    Graphics g = img.getGraphics();

    int w = img.getWidth(), h = img.getHeight();

    g.setColor(background);

    g.fillRect(0, 0, w, h);

    g.setColor(foreground);

    g.setFont(font.deriveFont(30f));

    FontMetrics fm = g.getFontMetrics();

    int y = fm.getAscent() + (h-fm.getHeight())/2;

    int x = (w-fm.stringWidth(text))/2;

    g.drawString(text, x, y);

    g.dispose();

    return img;

  }

  void setToolTip(S text) {

    if (is != null) is.setToolTipText(text);

  }

}