Jamie McCracken wrote: > Erlend Davidson wrote: >> >> 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? > > src/trackerd/tracker-metadata.c > > function tracker_metadata_get_thumbnail Actually it's src/tracker-thumbnailer/tracker-thumbnailer.c just after the comment: /* do we have a thumbnailer for this mime type? */
Is there an easy way to process .desktop files? What needs to be done is all .desktop files in /usr/local/share/thumbnailers/ read and only those with "MimeType=argv[2]" selected. Then read TryExec=DEPEND_ON_THIS_BINARY and check that DEPEND_ON_THIS_BINARY is executable and on the path, if so run the command specified by the key X-Thumbnailer-Exec. e.g. convert "ps:$ifile[0]" -scale "$sizex$size" "png:$ofile" _______________________________________________ tracker-list mailing list tracker-list@gnome.org http://mail.gnome.org/mailman/listinfo/tracker-list
