Bug 160954 Legend area disappears when tick Show Value check box for Gantt chart
Legend area disapears when tick Show Value check box for Gantt chart Steps to reproduce: 1. Create a Gantt Chart. 2. Double click the chart, select "Format Chart" button, go to Chart Area->Legend, tick "Legend Visible" check box, tick "Value: Show Value" check box Expected result: Value is shown. Actual result: The legend area dispears.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/LegendBuilder.java
dFWidth = newMetrics[0];
				dFHeight = newMetrics[1];
			}
			dDeltaHeight = legendData.insCa.getTop( )
					+ dFHeight
					+ legendData.insCa.getBottom( );
			if ( dHeight + dDeltaHeight > legendData.dAvailableHeight )
			{
				
				dColumnWidth = dWidth + legendData.dHorizonalReservedSpace;
				if ( dExtraWidth + dColumnWidth > legendData.dAvailableWidth
						+ legendData.dSafeSpacing )
				{
					dWidth = -legendData.dHorizonalReservedSpace;
					columnList.clear( );
					
					
				}
				else
				{
					legendData.legendItems.addAll( columnList );
					columnList.clear( );
					dExtraWidth += dColumnWidth;
					dExceedingSpace = dExtraWidth
							+ dFWidth
							+ legendData.dHorizonalReservedSpace
							- legendData.dAvailableWidth
							- legendData.dSafeSpacing;
					newMetrics = checkEllipsisText( dExceedingSpace,
							dFWidth,