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
legendData.dHorizonalReservedSpace = legendData.insCa.getLeft( )
				+ legendData.insCa.getRight( )
				+ ( 3 * legendData.dItemHeight )
				/ 2
				+ legendData.dHorizontalSpacing;
		legendData.dVerticalReservedSpace = legendData.insCa.getTop( )
				+ legendData.insCa.getBottom( )
				+ legendData.dVerticalSpacing;
		
		final Block bl = cm.getBlock( );
		final Bounds boFull = bl.getBounds( )
				.scaledInstance( legendData.dScale );
		final Insets ins = bl.getInsets( ).scaledInstance( legendData.dScale );
		final Insets lgIns = lg.getInsets( ).scaledInstance( legendData.dScale );
		int titleWPos = 0;
		int titleHPos = 0;
		final TitleBlock titleBlock = cm.getTitle( );
		final Bounds titleBounds = titleBlock.getBounds( )
				.scaledInstance( legendData.dScale );
		if ( titleBlock.isVisible( ) )
		{
			switch ( titleBlock.getAnchor( ).getValue( ) )
			{
				case Anchor.EAST :
				case Anchor.WEST :
					titleWPos = 1;
					break;
				case Anchor.NORTH :
				case Anchor.NORTH_EAST :
				case Anchor.NORTH_WEST :