Bug 161186 Effects in viewer and PDF are not the same
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFBlockStackingLM.java
+ getDimensionValue( areaStyle
								.getProperty( StyleConstants.STYLE_BORDER_BOTTOM_WIDTH )) );
	}
	public boolean addArea( IArea area )
	{
		
		if ( area == null )
		{
			return true;
		}
		AbstractArea aArea = (AbstractArea) area;
		if ( aArea.getAllocatedHeight( ) + getCurrentBP( ) <= getMaxAvaHeight( )
				|| isPageEmpty( ) )
		{
			aArea.setAllocatedPosition( getCurrentIP( ) + getOffsetX( ),
					getCurrentBP( ) + getOffsetY( ) );
			setCurrentBP( getCurrentBP( ) + aArea.getAllocatedHeight( ) );
			root.addChild( area );
			return true;
		}
		return false;
	}
	public int getLineHeight( )
	{
		if ( content != null )
		{
			IStyle contentStyle = content.getComputedStyle( );
			return PropertyUtil.getLineHeight( contentStyle.getLineHeight( ));
		}