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 default output pdf file name
	 */
	public static final String REPORT_FILE = "Report.pdf"; 
	
	/**
	 * the default image folder
	 */
	public static final String IMAGE_FOLDER = "image"; 
	
	/**
	 * the output stream
	 */
	private OutputStream output = null;
	
	/**
	 * the emitter configturation
	 */
	
	
	/**
	 * The ratio of layout measure to iText measure
	 */
	private static final int layout2PdfRatio = 1000;
	
	/**
	 * the pdf Document object created by iText
	 */
	private Document doc = null;