@Override
    public void draw(Graphics g) {
        g.setColor(Color.WHITE);
        g.setFont(new Font("Tahoma", Font.PLAIN, FONT_SIZE - FONT_SIZE/4));

        switch (type) {
            case 0:
                g.drawString("T", x, y);
                break;
            case 1:
                g.drawString("+", x, y);
                break;
            case 2:
                g.drawString("-", x, y);
                break;
        }

        g.setFont(new Font(g.getFont().getFontName(), g.getFont().getStyle(), g.getFont().getSize() - 2));
    }