[PyKDE] KFilePlugins, using Python from C++ code and vice versa
joe at novell.com
Thu Aug 31 11:59:20 BST 2006
quite a while ago I asked if anybody had working examples of KFilePlugins
written in Python, but I got no answer. I guess the reason was that there are
no such examples.
So let me rephrase the problem:
What I want to do is prototype a metadata pluging for KDE that can fetch file
metadata from a server instead of reading the files.
E.g., if I open a folder with dozens of large digital photographs in JPEG
format, what will happen is that Konqueror, or actually the KFilePlugin that
is registered for jpeg, reads the EXIF metadata (the info about when, with
what lens, aperture etc. the photo was taken) from the file and generates a
thumbnail. If the folder is on a remote drive this will create quite a lot of
traffic and take quite a while if you have low bandwidth.
But if the file plugin could just ask the server for the metadata and get the
metadata and thumbnail from the server, things would be faster and need less
The client-server part is easy. In my prototype I'm using a Python xmlrpc
server and client. On the server side I can call kfile (the command line
client for accessing file plugins) from Python. So that's no issue either.
But on the client I'd now like to replace the existing file plugins by a
remote metadata proxy that redirects the API calls to the remote server.
KFilePlugins are available in PyKDE, but the missing piece for me is how to
register them. Usually, KFilePlugins are referenced by name in a .desktop
file, and the matching dynamic library is loaded when needed.
So the question is how I can do that with PyKDE. Do I have to write a wrapper
dynamic library in C++ that calls my Python code? If yes, how? (An example
would be fine.)
Joachim Werner <joe at suse.de>
Project Manager Contracts, Migration, SDK
Novell, Linux R&D Nuernberg
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