Hello to all.
I need to concatenate a number of pdf files into a single pdf. 
Every
page of source pdfs have to be resized and centered into the output
page (actual resizing, i.e. not  changing page boundaries).
The problem is that the interactive features of source page have to be kept (at 
least link annotations).
I
cannot use both PdfStamper nor PdfCopy (they don't keep interactive
features) but only the PdfWriter class, by extracting the annotations
from source pages, scale them and finally add to the output document as
a template the scaled PdfImportedPage, together with the annotations.

This
require some work, so I started trying to preserve only link
annotations, and I found that the PdfReader.getLinks() method, the
PdfAnnotation.PdfImportedLink class, together with
PdfWriter.addAnnotation() method could do the work.

But it seems
to me that PdfReader.getLinks() and PdfAnnotation.PdfImportedLink have
the limitation to handle link annotation with (indirect) explicit
destinations only, excluding named destinations and link annotations
with /GoTo actions.

So I came up with the idea of extracting
from the source page dictionary the annotation dictionary, handling it,
and putting it into the page's dictionary. This seems to me a hard task
as I don't know how to handle with indirect objects referenced by the
annotation dictionary items, and probably I would need to investigate
how PdfWriter works in its internals.
Another solution could be to
create a PdfAnnotation object from the source page's annotation
dictionary, scale it, and then add it to the output document.

Can you guys please give me an advice: am I on the right way or am I doing 
something wrong?

Thanks in advance,
Fabrizio

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