Bug 211773 Legend entries overlap
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
private int[] filteredMinSliceEntry;
		private double maxWrappingSize;
		private double dHorizonalReservedSpace;
		private double dVerticalReservedSpace;
		private double dAvailableWidth;
		private double dAvailableHeight;
		private double dItemHeight;
		private double dVerticalSpacing;
		private double dHorizontalSpacing;
		private double dScale;
		private double dSeparatorThickness;
		private double dSafeSpacing;
		private double dEllipsisWidth;
		private List legendItems = new ArrayList( );
		private Insets insCa;
		private String sMinSliceLabel;
	}
	private static final String ELLIPSIS_STRING = "..."; 
	private Size sz;
	/**
	 * The constructor.
	 */
	public LegendBuilder( )
	{
	}
	/**
	 * Computes the size of the legend. Note the computation relies on the title
	 * size, so the title block must be layouted first before this.
	 * 
	 * @param lg