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
* @param la
	 * @return
	 */
	public static final boolean isShadowDefined( Label la )
	{
		return !isColorTransparent( la.getShadowColor( ) );
	}
	/**
	 * Returns if the given two double values are equal within a small
	 * precision, e.g. EPS=1E-10.
	 * 
	 * @param v1
	 * @param v2
	 * @return
	 */
	public static final boolean mathEqual( double v1, double v2 )
	{
		return Math.abs( v1 - v2 ) < EPS;
	}
	/**
	 * Returns if the given left double value is less than the given right value
	 * within a small precision, e.g. EPS=1E-10.
	 * 
	 * @param v1
	 * @param v2
	 * @return
	 */
	public static final boolean mathLT( double lv, double rv )
	{
		return ( rv - lv ) > EPS;