Bug 123939 [Smoke][Regression]Drill through link doesn't work in pdf.
Description: Drill through link doesn't work in pdf. Steps to reproduce: 1. View attached design file url.rptdesign in html/pdf, click the drill though link in the last three image. Result: Drill through link doesn't work in pdf. Some links in html also don't work.
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
}
						remainY -= img.scaledHeight();
					}
				}
			}
		} catch (IOException ioe)
		{
			logger.log( Level.WARNING, ioe.getMessage( ), ioe );
		} catch (BadElementException bee)
		{
			logger.log( Level.WARNING, bee.getMessage( ), bee );
		} catch (DocumentException de)
		{
			logger.log( Level.WARNING, de.getMessage( ), de );
		} catch (RuntimeException re)
		{
			logger.log( Level.WARNING, re.getMessage( ), re );
		}
		cbUnder.restoreState();
	}
	
	/**
	 * convert the layout measure to PDF, the measure of layout is 1000 times
	 * larger than that of PDF
	 * 
	 * @param layoutMeasure
	 *            the measure computed in layout manager
	 * @return the measure in PDF
	 */
	private float pdfMeasure( int layoutMeasure )