Bug 137444 Can not preview the old file with PDF
Details: Can not preview the old file with PDF Please run the attached file with PDF, it can not preview. But HTML and web view is no problem.
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
public void visitText(ITextArea textArea)
	{
		drawText(textArea);
	}
	public void visitImage(IImageArea imageArea)
	{
		drawImage(imageArea);
	}
	/**
	 * If the container is a PageArea, this method news a pdf page.
	 * If the container is the other containerAreas, 
	 * such as TableArea, or just the border of textArea/imageArea
	 * draw the border and background of the container
	 * @param container				the ContainerArea specified from layout
	 */
	public void startContainer(IContainerArea container)
	{
		if (container instanceof PageArea)
		{
			newPage(container);
			containerStack.push(new ContainerPosition(0, 0));
		}
		else
		{
			drawContainer(container);
			ContainerPosition pos;
			if ( ! containerStack.isEmpty() )
			{
				pos = (ContainerPosition)containerStack.peek();
				ContainerPosition current = new ContainerPosition(