On Sunday 20 March 2011 13:25:34 C. Boemann wrote: > On Sunday 20 March 2011 13:18:28 Pierre wrote: > > On Sunday 20 March 2011 09:06:31 Boudewijn Rempt wrote: > > > On Saturday 19 March 2011 Mar, Diego Turcios wrote: > > > > Hi I was looking at the KDE Wiki, and I have interest in the > > > > PDF-Import and/or PDF-Export project. > > > > I have some experience in QT c++. The project sounds interesting, I > > > > will like to know am little more about this project. > > > > > > I'm not totally sure which wiki page you were looking at :-). I guess > > > http://community.kde.org/GSoC/2011/Ideas#Project:_PDF-Import_and.2For_P > > > DF - Export, right? > > > > > > Sebastian Sauer is on holiday right now, but the description has most > > > of the basics. You need to investigate the poppler library to start > > > with. The idea is to be able to load PDF documents as editable text. > > > Years ago, KWord had this ability through using xpdf directly > > > (http://websvn.kde.org/branches/koffice/1.6/koffice/filters/kword/pdf/) > > > . However, xpdf causes a steady stream of security issues, so it's > > > necesary to use a real library for that, poppler. I'm not sure myself > > > how I would go about it, but I would start browsing the old code and > > > the poppler api documentation > > > (http://people.freedesktop.org/~aacid/docs/qt4/). Focus on the import > > > part first: right now our pdf export is not great, but it works. > > > > Hi > > > > I had to parse PDF files for the OpenstreetMap project in france (data > > could be extracted from PDF generated from the cadastre) > > I don't know how you plan to use poppler, but for this case, I could not > > extract any useful information from its datastructures. I instead had to > > use libpodofo. I don't think you can use poppler for Calligra needs > > (except if you implement a new poppler backend), but I'd be happy to be > > proven wrong... > > > > Pierre > > Also libpodofo seems the only one remotely capable of generating > colormanaged pdf, which at least Krita might like FYI, podofo gives you the code for PDF vector graphics. depending on your needs, it can be great or terrible :) That "code" is well documented in the PDF specification. It uses a RPN-like notation. You push each token on a stack, when facing an operand you pop tokens, and you are done. It translates really easily to QPainter (circa 3/5 lines per token I'm really using)...
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