Some news about this work.
*** The context:
- this is mainly for netbook users I suppose. desktop should always
have access to the original pictures.
- having original pictures on the local hard drive of a notebook is
dangerous given the lifetime of an hard drive!
*** The goal:
- make it possible to use *all* dt features even when an image on an
external drive not connected
- not meant to have a local copy of everything, just copy what needs
some work.
- to be able to work on a set of pictures (recent or not) on plane
on train or during a meeting away from home.
*** Some usage scenario (based on my needs):
- you import a set of pictures from the camera. you get local copy
of them before moving them in a RAID storage for safety. Moving away
from home you can start editing the pictures.
- you've taken a set of pictures from an event. you want to bring
some of them with you on your photo club meeting for developing them
with a friend.
- you need to print some picture on a high-end printer in a photo
club (some minor editing may be required), you get a local copy before
moving away from home.
*** How does it works:
- two buttons are added into the lighttable "selected images"
module. one to get a local copy and one to remove pictures from the
local storage. this is working on the current selection (like all
other buttons there).
- local copy status is a white circle on the right of the current color labels
=> we probably need something better here, that's just to keep the
ball rolling...
- the local copies are stored into: ~/.cache/darktable
naming is: img-<imgid>-<md5-full-path-name>.<ext>
=> <imgid> will be quite handy to debug if something goes wrong
- when accessing a picture, if not found on the original storage we
look into the cache.
- when a picture is deleted, the cache file is deleted if any
- when a picture is moved, the cache file is renamed if any
I think that's all.
You can try it on the "local-cache" branch in GitHub.
Beware that this adds a field into the images table on the database.
Probably better to test this feature on a copy of the database.
Anyway, waiting for feedback.
Thanks.
--
Pascal Obry / Magny Les Hameaux (78)
The best way to travel is by means of imagination
http://v2p.fr.eu.org
http://www.obry.net
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