Bug 124444 Preview attached file in pdf will display nothing.
Description: Preview attached file in pdf will display nothing. Steps to reproduce: 1. Preview attached design file in pdf Expected result: Report content shows Actual result: Wait for 10 minutes but nothing showed at all
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
/**
	 * the Pdf Writer
	 */
	private PdfWriter writer = null;
	/**
	 * contentByte layer for pdf;
	 * cb covers cbUnder.
	 */
	private PdfContentByte cb, cbUnder = null;
	/**
	 * the height and width of the current pdf page.
	 */
	private float pageHeight, pageWidth = 0f;
	
	/**
	 * the logger logging the error, debug, warning messages.
	 */
	protected static Logger logger = Logger.getLogger( PDFEmitter.class.getName( ) );
	
	protected IReportContent report;
	
	protected IReportRunnable reportRunnable;
	
	protected ReportDesignHandle reportDesign;
	
	protected PDFRenderContext context;
	
	/**
	 * get the output format. here it returns "pdf".
	 */