A Dijous, 4 de novembre de 2010, Jakob Voss va escriure: > Hi, > > Apparently annotations are an issue that is still not resolved. You > should be able to read and modify annotations that were created by other > PDF readers, but poppler does not support it. There are also good > reasons to store annotations separated from the original document. But > each applications seems to have its own proprietary format to store and > exchange annotations. I summarized some notes here: > > https://github.com/nichtich/marginalia/wiki/Support-of-PDF-annotations > > It looks like Okular uses its own proprietary format to express > annotations in metadata.xml. Can you point me to any documentation of > this format? How does it compare to the format used by other > applications (Xournal, iAnnotate, Evernote etc.). > > You could transform okular annotations to PDF annotations, and vice > versa. The iText PDF library seems to support reading and adding PDF > annotations. A simple sample script can be found at: > > https://github.com/nichtich/marginalia > > you should be able to get it running thanks to Maven, which makes > programming in Java suck at least less. But before programming a > converter for each custom annotation format - why not just using a > subset of XFDF? XFDF is known for storing PDF form data, but it also > supports PDF annotations in XML: > > XML Forms Data Format Specification (XFDF) 2.0 (2007). > http://partners.adobe.com/public/developer/en/xml/xfdf_2.0.pdf > > PDF annotations are defined in chapter 8.4 of the PDF reference (2006), > page 604-647. see > http://www.verypdf.com/document/pdf-format-reference/pg_0604.htm > > Anyway, a standard file format for Annotations which can be extracted > from and added to PDF files, would be best.
We do know how to improve Annotation support in Okular, it's just that we do not have time for it. Albert > > Jakob _______________________________________________ Okular-devel mailing list Okular-devel@kde.org https://mail.kde.org/mailman/listinfo/okular-devel
