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
* @param areaHeight	the height of the area whose coordinate need to be converted.
	 * 						To text area, the height is from the top of the text to
	 * 						the text's baseline.
	 * @return				the PDF Y coordinate
	 */
	private float layoutAreaY2PDF (int layoutY, int areaHeight)
	{
		return pageHeight - pdfMeasure(layoutY) - pdfMeasure(areaHeight);
	}
    
	/**
	 * Set current area as a bookmark. 
	 * if current area does NOT contain any bookmark info,
	 * this method does nothing.
	 * 
	 * @param area			the area which may need to be marked. 
	 */
	private void makeBookmark(IArea area) 
	{
		IContent content = area.getContent();
		if( null != content )
		{
			String bookmark = content.getBookmark();
			if (null != bookmark)
			{
				cb.localDestination( bookmark, new PdfDestination(
						PdfDestination.XYZ, -1, layoutPointY2PDF(area.getAbsoluteY()), 0));
			}
			String tocmark = content.getTOC();
			if (null != tocmark)