On Friday 29 August 2008, Brian J. Tarricone wrote: > Philip Van Hoof wrote: > > On Fri, 2008-08-29 at 11:22 +0100, Rob Taylor wrote: > > > >> I wonder if it'd make sense to allow multiple services to provide > >> thumbnailing for different mime types. This could be done by having the > >> thumbnailing service(s) register bus names of the form > >> org.freedesktop.thumbnailer.<mime type>, and the application could look > >> up the bus name for the mime type of the file it wishes to thumbnail, > >> and dbus-activation would take care of running the appropriate service. > > > > This makes sense to me. > > This sounds overly complicated to me. Now you're assuming that any app > that wants to load thumbnails is also capable of figuring out the > mime-type of the file it wants to load. For a file manager, sure, but I > don't think any app that could potentially want thumbnails should have > to be mime-type-aware.
I agree, it's the job of that "service" to figure out the mimetype (and therefore the actual backend) to use. Also, I would hate seeing the output of `qdbus` be cluttered with 30 (*) thumbnail "services", when all of this is in fact implemented by one process... It sounds to me like we want a frontend and a backend API, i.e. a single entry point for requesting a thumbnail, but the possibility for that thumbnail service to delegate the work to other implementations for specific mimetypes. Hmm, maybe that's as simple as saying that: org.freedesktop.thumbnailer.generic is used by default, and that one can find out and call a org.freedesktop.thumbnailer.<specific mime type> service if it doesn't know how to handle that mimetype itself. This way we have mimetype determination in the main service (the .generic), as well as all the "builtin" thumbnailers (*), while still allowing others to extend the system with support for 3rd-party formats. Obviously the .generic service would be the one provided by the desktop environment. (*) KDE's kio_thumbnail supports 32 mimetypes out of the box -- and you get 36 more mimetypes if you install koffice on top, so 68 in total. I don't want 68 dbus names on the session bus. -- David Faure, [EMAIL PROTECTED], sponsored by Trolltech to work on KDE, Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org). -- nautilus-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/nautilus-list
