Re: [Tracker] fd.o compliant thumbnailing

[Erlend Davidson <E R M Davidson sms ed ac uk>]

Jamie McCracken wrote:
> Erlend Davidson wrote:
>
> > That would require a whole standard for thumbnailers... the thunar 
> > ones take three or four command-line arguments (input file, size, 
> > output file and optionally the URI of the file), this should be 
> > sufficient, but someone might want more and then the standard would 
> > break.
>
> not really the same arguments are used by gnome in its gconf based 
> thumbnailers so its already a de facto standard. (A;though I dont know 
> what KDE uses?)
KDE is slightly different I think.  For example with kwebdesktop (which 
is used to thumbnail webpages),

kwebdesktop 640 480 output_file input_file.


This is not an impossible problem to overcome however, as the thunar way 
of calling external thumbnailers involves the use of a .desktop file, like:

---< html-thumbnailer.desktop >---
[Desktop Entry]
Version=1.0
Encoding=UTF-8
Type=X-Thumbnailer
TryExec=kwebdesktop
MimeType=text/html;
Name=HTML Thumbnailer
X-Thumbnailer-Exec=kwebdesktop 640 480 %o %u


which can be used to change the order of arguments.
> > Incidently tracker uses the same command-line arguments as thunar for 
> > thumbnailers.  Coud you possibly change tracker to use the same 
> > directory as thunar?
>
> thats my point - the only thing not standardised is the location of 
> the scripts and thats why a freedesktop specified location would be 
> preferred by tracker.
I might e-mail the xdg list.
> In the short term, I can of course check for gnome thumbs using 
> GConfTool (which does not require linking in GConf) and as you say the 
> thunar directory if it exists so patches welcome for that.
>
> feel free to add a bugzilla enhancement request 
> (http://bugzilla.gnome.org) to tracker and I will get round to it 
> eventually if no patch is forthcoming
What area of the source should I look in to?