[Gimp-developer] thumbnail generation for nautilus via gimp

[David Gowers]

Hi Eckhard,

On Dec 2, 2007 6:15 AM, Eckhard M. Jäger <bart at neeneenee.de> wrote:
>
>
>  Hello,
>
>  i got the idea to create a python script thats generate the thumbnails of
> unsupported images in nautilus using gimp.
>  Implementing this in Gimp and in Nautilus.
>
>  I studied the commandline options ( -n, -a, -i, -d, -f, -s )of gimp and do
> not know if it is possible. Am i right i have to load and unload
>  all the images of a directory to get gimp generating an thumbnail or is
> there a better way?

I recommend you to use gimp-console instead of gimp; The GUI is
irrelevant to what you're doing.

Briefly, you need to:
1. Load the image
2. Generate the thumbnail
3. Delete the image from memory (using gimp-image-delete)

for each image in the list of images.

For a start, invoking gimp-console once for each image is fine.
Later I suggest you run gimp-console only once, for greatly increased
speed (make gimp's scripting loop over the files, rather than your
scripting.). You could do this very easily if you can rely on
gimp-python being installed on the users' machines, and use that
instead of Script-Fu. (you can also write a loop in Script-fu, but I
have very little idea HOW.)