Richard Michael wrote:
>> If the pages all have the same size,
>> and the extra content you're adding looks
>> exactly the same for each page, you might
>> want to create the 'line numbers' as a
>> separate PDF (with Acrobat or iText or...),
>> then superimpose this PDF on the existing PDF.
>
> Thanks. Will it be easy to construct a new PDF and merging the two
> documents, instead of merging new content on each page with a
> PdfStamper?
Superimposing is also done with PdfStamper.
It saves you a lot of CPU and it will result in a PDF
with a lower file size, if you reuse the same template
for every page.
The word 'template' in the above sentence can be interpreted
in different ways. You can interpret it as a one page PDF
created the way you want it with the tool you find most suited
for the job. You will use iText to import this one page ('the
template') as a PdfImportedPage, maybe wrap this object in an
Image object (with absolute positions set to x=0, y=0), and add
it to each page with PdfStamper.getOverContent().addImage(img);
Or you can create the template with iText as a PdfTemplate
object, use some math, some moveTo, lineTo, showTextAligned
methods to create the line numbers and marks, and then maybe
also wrap the PdfTemplate object in an image, adding it the
same way as I just described.
This will avoid duplicate work (drawing the same numbers and
mark over and over again for each page) and duplicate data
(adding the same content stream as many times to the PDF as
there are pages).
br,
Bruno
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