I have downloaded the emulator for the software version 3.0 and got it running. However, I only have one computer running Ubuntu 9.10 and I didn't get the Anjuta Poky Plugin to load, so I eperimented with the xournal V5 code using only the command line.
I also don't have the DR800 (yet), but I was still curious how hard it is to add pdf-zooming/annotating to the device and I've got some preliminary results:
After porting the libart_lgpl and libgnomecanvas library, the xournal code compiled (I also had to link more IRex libraries, just like
Mackx had forseen)
Long story short: it works. Partly. In the emulator.
The xournal loads, but scribbling work only in the standard mode. The experimental mode results in ioctl error messages when trying to write.
Additionally, loading a pdf results in a dialog box: "Unable to start PDF loader pdftoppm"
I have not made any changes to the code, as I'm waiting for Mackx to post the source code of the xournal V8 version.
As for pure pdf viewing (and zooming), I also ported epdfview.
The binaries plus some rudimentary install instructions are in the attached tarball. I don't know how to create fancy install routines, or entries on the menu screen. I'm happy if anyone can point me to good instructions on this. Maybe someone owning the device can tell me, if its working similarly on the real thing. But I'm very optimistic that the DR800 can be used in the way I want it: reading some books, but mostly technical documents. Some of which need annotations.