[Shotwell] thumbnail update

[Nelson]

Would it be useful to put the source image name, path, unique ID,
and/or md5sum in the thumbnail's EXIF header?

As I was re-scanning my photos yesterday, I was thinking it would save
a lot of time to re-use the thumbnails that I had before.  I didn't
see any data in the thumbnails (filename or header data) that would
enable them to be reconnected to their source images if the database
was lost or corrupted.

Just an idea.



On Tue, Dec 28, 2010 at 6:49 AM, Adam Dingle <adam at yorba.org> wrote:
> Saturnino,
>
> On Mon, Dec 27, 2010 at 8:53 PM, Saturnino Garcia <sat at elsaturnino.com>wrote:
>
>> I recently bought a new computer and am in the process of transferring all
>> my data to my new hard drive. I backed up my shotwell database (photo.db)
>> and my photo directory.
>
>
> Actually backing up photo.db is not sufficient for transferring to a new
> hard drive, since Shotwell stores its thumbnails in the .shotwell directory
> and you need those too (as you've discovered the hard way).  So the right
> thing to do was to back up the entire ~/.shotwell directory, not just
> photo.db.  See the section on backing up in the Shotwell FAQ (
> http://trac.yorba.org/wiki/Shotwell/FAQ).
>
>
>> When I open shotwell on my new computer, there are
>> no thumbnails for the image (only gray boxes). The images show up fine in
>> the single image view though (i.e. when I double click on one of them). Is
>> there some way I can regenerate those thumbnails?
>>
>
> Unfortunately Shotwell cannot regenerate these thumbnails today, and I'm
> sorry to say you may need to reimport your photos into a fresh Shotwell
> library (losing any edits you've made) unless you have a backup copy of your
> old .shotwell directory including the thumbnails.
>
> There are a couple of changes we'd like to make to Shotwell to improve this
> situation.  Ideally we'd like Shotwell to regenerate thumbnails if absent (
> http://trac.yorba.org/ticket/2889), which would solve your problem
> automatically.  Also, we're considering storing thumbnails in photo
> directories rather than the .shotwell directory (
> http://trac.yorba.org/ticket/2250), which would make it easier to back them
> up along with photos themselves.
>
> adam
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