On 4/28/2014 7:43 AM, Saurabh Mayekar wrote:
As shown in the image I was able to write Table 1 successfully that
goes in multiple pages. But how do i come at the starting page of the
document again to plot the image at it's absolute position at first page?
Once a page is written to the output stream, you can't go back.
If you want something to be present at a page that has already been
written, you need to provide a place holder before the page is written
to the output stream. In PDF terminology, we'd say you need an external
object (XObject); in iText, this corresponds with a PdfTemplate.
A common use case is when you need "Page X of Y". When you write the
first page, you can write "Page 1 of", but you don't know the total
number of pages yet (because you haven't reached the end of the document
yet). To solve this problem, you'll add a small PdfTemplate object, and
once you're at the end of the document, you'll add the correct value of
Y to this object.
You could do the same thing with your image: if you only know what the
image will look like once the table is completed, you could reserve the
area using a PdfTemplate, and add the image to that PdfTemplate.
If you know what the image looks like in advance, it goes without saying
that you should add it while you're still dealing with the first page.
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