Bug 211773 Legend entries overlap
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
final TextRenderEvent tre = (TextRenderEvent) ( (EventObjectCache) ir ).getEventObject( StructureSource.createLegend( lg ),
				TextRenderEvent.class );
		double dLaAngle = la.getCaption( ).getFont( ).getRotation( );
		if ( isRightToLeft( ) )
		{
			dLaAngle = -dLaAngle;
		}
		double dDeltaHeight = 0;
		if ( dLaAngle > 0 && dLaAngle < 90 )
		{
			dDeltaHeight = ( bo.getHeight( ) + dFullHeight - dItemHeight ) / 2;
		}
		else if ( dLaAngle < 0 && dLaAngle > -90 )
		{
			dDeltaHeight = ( bo.getHeight( ) - dFullHeight + dItemHeight ) / 2;
		}
		else if ( dLaAngle == 0 || dLaAngle == 90 || dLaAngle == -90 )
		{
			dDeltaHeight = bo.getHeight( ) / 2;
		}
		if ( isRightToLeft( ) )
		{
			tre.setLocation( LocationImpl.create( dX
					+ dColumnWidth
					- dLeftInset
					- 3
					* dItemHeight
					/ 2
					- dHorizontalSpacing, bo.getTop( ) + dDeltaHeight ) );