public double getMaximumBarWidth() {
        return this.maximumBarWidth;
    }

    /**
     * Sets the maximum bar width, which is specified as a percentage of the
     * available space for all bars, and sends a {@link RendererChangeEvent} to
     * all registered listeners.
     *
     * @param percent  the percent (where 0.05 is five percent).
     *
     * @see #getMaximumBarWidth()
     */
    public void setMaximumBarWidth(double percent) {
        this.maximumBarWidth = percent;
        fireChangeEvent();