Bug 191005 PDF preview hangs up with attached xtab.[1102]
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFLineAreaLM.java
if ( calWidth > 0 && calWidth < this.maxAvaWidth )
		{
			specWidth = calWidth;
		}
		if(specWidth<=avaWidth && specWidth>0)
		{
			expectedIP = currentIP + specWidth;
		}
		return specWidth>avaWidth;
	}
	public void submit( AbstractArea area )
	{
		root.addChild( area );
		area.setAllocatedPosition( getCurrentIP( ), getCurrentBP( ) );
		setCurrentIP( getCurrentIP( ) + area.getAllocatedWidth( ) );
		lineFinished = false;
		
	}
	
	protected void justify()
	{
		int spacing = root.getContentWidth( ) - getCurrentIP( );
		int blankNumber = 0;
		int charNumber = 0;
		int[] blanks = new int[root.getChildrenCount( )];
		int[] chars = new int[root.getChildrenCount( )];
		Iterator iter = root.getChildren( );
		int index = 0;
		while ( iter.hasNext( ) )
		{