Bug 313459 Problem with % when generating images in tables.
See the attached BirtProject, it has two reports. Each identical except for this difference: The image width/height is set to a %age value (50%) in one (TestImage.rptdesign) and not-set in the other (TestImageWorking.rptdesign). TestImage.rptdesign does not display the image in pdf, but works fine in html. TestImageWorking.rptdesign shows the image in both pdf and html. The %age setting seems to cause the problem in pdf format.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/util/PropertyUtil.java
}
		}
		return null;
	}
	public static int getImageDpi( IImageContent content, int imageFileDpi,
			int renderOptionDpi )
	{
		
		
		
		
		int resolution = imageFileDpi;
		if ( 0 == resolution )
		{
			resolution = getRenderDpi( content, renderOptionDpi );
		}
		return resolution;
	}
	/**
	 * The DPI resolution used in render. the preference of the DPI setting is:
	 * 1. use the DPI in render options. 2. the DPI in report designHandle. 3.
	 * the JRE screen resolution. 4. the default DPI (96).
	 * 
	 * @param content
	 * @param renderOptionDpi
	 * @return
	 */
	public static int getRenderDpi( IReportContent content, int renderOptionDpi )
	{
		int resolution = renderOptionDpi;