Bug 123736 Underline, linethrough, overline doesn't work for chart font.
Description: Underline, linethrough, overline doesn't work for chart font. Steps to teproduce: 1. Add a style, set its font. 2. Tick "underline", "linethrough" and "overline". 3. Preview. Font setting doesn't work.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/ChartUtil.java
{
	/**
	 * Precision for chart rendering. Increase this to avoid unnecessary
	 * precision check.
	 */
	private static final double EPS = 1E-9;
	/**
	 * Returns if the given color definition is totally transparent. e.g.
	 * transparency==0.
	 * 
	 * @param cdef
	 * @return
	 */
	public static final boolean isColorTransparent( ColorDefinition cdef )
	{
		return cdef == null
				|| ( cdef.isSetTransparency( ) && cdef.getTransparency( ) == 0 );
	}
	/**
	 * Returns if the given label defines a shadow.
	 *