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Re: PDF hyperlinks
Re: PDF hyperlinks
Mon, 27 Dec 2010 15:34:05 +0100
KMail/1.13.5 (Linux/2.6.35-23-generic; KDE/4.5.4; i686; ; )
Am Montag, 27. Dezember 2010, um 01:34:47 schrieb Dan Eble:
> The only mention I can find of PDF hyperlinks is for the point-and-click
LilyPond also supports URL hyperlinks with the \with-url command. They are
written out to the intermediate .ps file as pdfmark and correctly converted to
> I would like to create a PDF with page references
> (toc/index/etc.) that jump to the page when clicked.
Internal links (to a particular position marked by a \label) are not supported
> Is that something that can be done in scheme? If so, in which file and
> functions should I begin?
I don't think it can be done in Scheme alone. I don't think it would be too
hard, though. Basically, it can be done with pdfmark, too. For the
specification of the pdfmark Postscript extension see
What needs to be done is:
1) In the Postscript backend (scm/famework-ps.scm or scm/output-ps.scm)
written in Scheme:
-) Write out each \label as a named destination to the .ps file. The code is
[ /Dest /nameOfYourLabel /DEST pdfmark
and needs to be inserted on the page where the label was placed.
-) For the link, you also need to insert
[ /Rect [70 650 210 675]
where the [70 650 210 675] specify the exact rectangle for the link.
2) Of course, the non-trivial part of all this is how to get the information
about label and link to the ps backend... I don't have a clear idea how to
propagate that information from the markup interpretation to the backend. It
might be able to do this in Scheme, but maybe also some C++ is required.
From a quick look at the code, all labels are collected in the label-page-
table variable of the paper object, but I don't know if this is available in
In any case, this is a very good enhancement request, so bug squad, please
open a bug report (enhancement request) for this.
Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
* Financial & Actuarial Math., Vienna Univ. of Technology, Austria
* http://www.fam.tuwien.ac.at/, DVR: 0005886
* LilyPond, Music typesetting, http://www.lilypond.org
- PDF hyperlinks, Dan Eble, 2010/12/26
- Re: PDF hyperlinks,
Reinhold Kainhofer <=