Bug 197585 URL Link error in Line-Chart output in PDF format
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFImageLM.java
{
	protected final static int DEFAULT_WIDHT = 212000;
	protected final static int DEFAULT_HEIGHT = 130000;
	protected IImageContent image;
	protected int maxWidth;
	protected ContainerArea root;
	private Dimension intrinsic;
	private static final String BOOKMARK_PREFIX = "javascript:catchBookmark('";
	public PDFImageLM( PDFLayoutEngineContext context, PDFStackingLM parent,
			IContent content, IReportItemExecutor executor )
	{
		super( context, parent, content, executor );
		init( );
	}
	/**
	 * get intrinsic dimension of image in pixels. Now only support png, bmp,
	 * jpg, gif.
	 * 
	 * @param in
	 * @return
	 * @throws IOException