public int getBackgroundImageAlignment() {
        return this.backgroundImageAlignment;
    }

    /**
     * Sets the background alignment.  Alignment options are defined by the
     * {@link org.jfree.ui.Align} class.
     *
     * @param alignment  the alignment.
     *
     * @see #getBackgroundImageAlignment()
     */
    public void setBackgroundImageAlignment(int alignment) {
        if (this.backgroundImageAlignment != alignment) {
            this.backgroundImageAlignment = alignment;
            fireChartChanged();
        }
    }

    /**
     * Returns the alpha-transparency for the chart's background image.
     *
     * @return The alpha-transparency.
     *
     * @see #setBackgroundImageAlpha(float)
     */
    public float getBackgroundImageAlpha() {
        return this.backgroundImageAlpha;