Paulo and Bruno -- thanks for the response to yesterday's question. In
trying to implement the PdfStamper post-processor solution, though, I am
running into an inexplicable runtime error. This is what I'm trying to
do (a simple proof of concept):
PdfReader reader = new PdfReader(infile);
PdfStamper stamp = new PdfStamper(reader, new
FileOutputStream(outfile));
PdfContentByte over = stamp.getOverContent(1);
over.beginText();
over.setFontAndSize(bf, 18);
over.setTextMatrix(100, 700);
over.showText("Test");
over.endText();
over.localGoto("testdest", 150, 360, 250, 460);
stamp.close();
The text displays fine, but I get a null pointer exception (referencing
PdfDocument.localGoto) at the call to localGoto(). I've tried placing
this inside and outside the beginText/endText block and I get the same
results either way. I must be misunderstanding how to use this, but I
can't find any docs to explain the PdfContentByte.localGoto method.
Thanks again ...
-- Marc Stein
-- [EMAIL PROTECTED]
Paulo wrote:
> Merge the docs with PdfCopy. Use PdfStamper to insert blank pages and
> write the TOC.
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On
> > Behalf Of Marc Stein
> > Sent: Wednesday, February 15, 2006 3:44 PM
> > To: [email protected]
> > Subject: [iText-questions] creating a clickable TOC for merged PDFs
> >
> > I have searched the archives and found a few references to a
> > critical problem I am having but I could not find a clear
> > answer - any help would be much appreciated.
> >
> > I am using iText to create a single PDF by merging a number
> > of PDFs using PDFCopy. I need to create a TOC (not
> > bookmarks) at the beginning of this document with clickable
> > links to the first pages of each of the source PDFs, and I am
> > unable to make these links clickable. Here are some of the
> > things I've tried, and the results:
> >
> > 1. using setLocalGoTo in a TOC document and
> > setLocalDestination in each source document, and then
> > merging. This produces a runtime error because, even though
> > the local goto/destination references are identical, they
> > originate in different documents and are thus invalid.
> >
> > 2. using RemoteGoTo with a reference to the final
> > output PDF name. This works as long as the final PDF name is
> > unchanged, but the links fail if the PDF name is changed.
> >
> > 3. using Actions or Annotations in place of LocalGoTo's
> > - this has the same problem as LocalGoTo
> >
> > 4. using setLocalGoTo in the TOC and creating dummy
> > destinations on a dummy page in the TOC with the same name as
> > the destinations in the source documents, and then merging
> > the TOC without including the dummy page. This produces
> > corrupted links after the merge because the page with the
> > dummy destinations is not present.
> >
> > 5. Using PDFCopy instead of PDFWriter to handle all
> > operations, and generating the TOC at merge time instead of
> > before merge time. This fails because apparently PDFCopy
> > cannot be used in place of PDFWriter for all operations.
> >
> > 6. Postprocessing the merged document to add the links
> > to the final PDF. I cannot find a way to do this.
> >
> > I am out of ideas - expert help would be greatly appreciated.
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