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?

Thanx.

Hello Sven,

thanx for that. I tried something like

gimp -i -n -f -d -s -b '(gimp-file-save-thumbnail /path/to/image.psd)' -b '(gimp-quit 0)'

but i didn't get it work :(

This is what have done so far: http://my.opera.com/area42/blog/generating-thumbnails-using-gimp

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Samstag, den 01.12.2007, 20:54 +0100 schrieb Sven Neumann:

Hi,

On Sat, 2007-12-01 at 20:45 +0100, Eckhard M. Jäger wrote:

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?

You can use the PDB function gimp-file-save-thumbnail(). See http://developer.gimp.org/api/2.0/libgimp/libgimp-gimpfileops.html#gimp-file-save-thumbnail

Sven

Hello Sven,

thanks for the link and the help.

there is a thing that i don't understand, my script is opening the file and so the thumbnail
is generated by Gimp automaticly when closing gimp.

I thought using gimp-file-save-thumbnail would be faster and uses less memory then opening
the files like i did. But now i read the documentation and see to use gimp-file-save-thumbnail
i have to open the file first to get the image ID.

So my question is: Is there an advantage using gimp-file-save-thumbnail?

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Sonntag, den 02.12.2007, 15:30 +0100 schrieb Sven Neumann:

Hi,

On Sun, 2007-12-02 at 12:56 +0100, Eckhard M. Jäger wrote:

thanx for that. I tried something like

gimp -i -n -f -d -s -b '(gimp-file-save-thumbnail /path/to/image.psd)' -b '(gimp-quit 0)'

but i didn't get it work :(

Have a look at the documentation again (hint: I gave you a link). Your call misses the ID of the image (that you need to obtain by opening it in GIMP beforehand). And your filename needs to be in parenthesis.

Sven

Hello,
thanx to all for the feedback and help.

@David

This sounds nice, i will check it out. I'm trying now to create a automatic thumbnailer
( like http://wiki.ubuntuusers.de/OpenDocument_Thumbnails http://wiki.ubuntuusers.de/_attachments/OpenDocument_Thumbnails/opendocument-thumbnailer http://wiki.ubuntuusers.de/_attachments/OpenDocument_Thumbnails/opendocument.schemas ) and if it done i will write a small plugin called "Browse Images" that will open Nautilus with the
directory of the opened image. If none image is loaded it will open the home directory.

My Script generates at the moment only for PSD, RGB and XCF files thumbnails, that i have
toch change too.

-
|\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Montag, den 03.12.2007, 19:20 +1030 schrieb David Gowers:

Hi Eckhard,

On Dec 2, 2007 6:15 AM, Eckhard M. Jäger 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.)

Hello,

i started writing the internal Gimp script for looping over the images. My code is so far the simple:

# -*- coding: utf-8 -*-

from gimpfu import * import os
import os.path

def python_thumbnailer(this_image, this_path): a = this_path

register(
"python-fu-thumbnailer",
"Generating thumbnails",
"Generating thumbnails for Nautilus via Gimp", "Eckhard M. Jaeger",
"Eckhard M. Jaeger",
"2007",
"/Xtns/Nautilus Thumbnailer...",
"",
[
(PF_STRING, "this_path", "Directory Path", ""), ],
[],
python_thumbnailer)

main()

this script is copied into ~/.gimp-2.4/plug-ins but didn't appear anywhere :(
I can't find the bug, please can somebody help me. Thanx.

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Montag, den 03.12.2007, 19:20 +1030 schrieb David Gowers:

Hi Eckhard,

On Dec 2, 2007 6:15 AM, Eckhard M. Jäger 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.)

Hello,

thanks for the feedback but other python plugins did work like Pylomo http://registry.gimp.org/plugin?id=10976 which didn't has a header starting with #!/usr/bin/python .

I'm using Ubuntu 7.10 and Gimpo 2.42 ( http://www.getdeb.net/app.php?name=Gimp ).

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Mittwoch, den 05.12.2007, 10:14 +1100 schrieb Owen:

On Tue, 04 Dec 2007 21:24:56 +0100 "Eckhard M." Jäger wrote:

Hello,

i started writing the internal Gimp script for looping over the images. My code is so far the simple:

# -*- coding: utf-8 -*-

from gimpfu import * import os
import os.path

def python_thumbnailer(this_image, this_path): a = this_path

register(
"python-fu-thumbnailer",
"Generating thumbnails",
"Generating thumbnails for Nautilus via Gimp", "Eckhard M. Jaeger",
"Eckhard M. Jaeger",
"2007",
"/Xtns/Nautilus Thumbnailer...",
"",
[
(PF_STRING, "this_path", "Directory Path", ""), ],
[],
python_thumbnailer)

main()

this script is copied into ~/.gimp-2.4/plug-ins but didn't appear anywhere :(
I can't find the bug, please can somebody help me. Thanx.

I don't know, but did you get any error messages when you started the Gimp from the command line?

If it uses python, do you need to call python #!/usr/bin/python?

Does it have the right permissions?

When I add those corrections, I get the menu item

Owen

Hello David,

thanks for the feedback. the script is well formed. The indention get lost pasting into
Evolution mailer.

I didn't get any error or message on the concole :(

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Mittwoch, den 05.12.2007, 09:17 +1030 schrieb David Gowers:

Hi Eckhard,

On Dec 5, 2007 6:54 AM, Eckhard M. Jäger wrote:

Hello,

i started writing the internal Gimp script for looping over the images. My code is so far the simple:

# -*- coding: utf-8 -*-

from gimpfu import * import os
import os.path

def python_thumbnailer(this_image, this_path): a = this_path

If there is really no indentation here, this will cause an IndentationError. You can see GIMP reports such errors on the terminal it was run from; so while you are debugging I recommend you run GIMP from an xterm.

register(
"python-fu-thumbnailer",
"Generating thumbnails",
"Generating thumbnails for Nautilus via Gimp", "Eckhard M. Jaeger",
"Eckhard M. Jaeger",
"2007",
"/Xtns/Nautilus Thumbnailer...",
"",
[
(PF_STRING, "this_path", "Directory Path", ""), ],
[],
python_thumbnailer)

main()

this script is copied into ~/.gimp-2.4/plug-ins but didn't appear anywhere :(
I can't find the bug, please can somebody help me. Thanx.

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Montag, den 03.12.2007, 19:20 +1030 schrieb David Gowers: Hi Eckhard,

On Dec 2, 2007 6:15 AM, Eckhard M. Jäger 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.)

Hello,

i found the problem why the script doesn't showed up, it needs the file permission "Exexcute".
Do not know why, i have written exporters for Blender and plugins for gEdit both in Python but
they didn't need the permission "Exexcute".

Ok, i'm new to Python Gimp plugins.

-
|\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Mittwoch, den 05.12.2007, 10:14 +1100 schrieb Owen:

On Tue, 04 Dec 2007 21:24:56 +0100 "Eckhard M." Jäger wrote:

Hello,

i started writing the internal Gimp script for looping over the images. My code is so far the simple:

# -*- coding: utf-8 -*-

from gimpfu import * import os
import os.path

def python_thumbnailer(this_image, this_path): a = this_path

register(
"python-fu-thumbnailer",
"Generating thumbnails",
"Generating thumbnails for Nautilus via Gimp", "Eckhard M. Jaeger",
"Eckhard M. Jaeger",
"2007",
"/Xtns/Nautilus Thumbnailer...",
"",
[
(PF_STRING, "this_path", "Directory Path", ""), ],
[],
python_thumbnailer)

main()

this script is copied into ~/.gimp-2.4/plug-ins but didn't appear anywhere :(
I can't find the bug, please can somebody help me. Thanx.

I don't know, but did you get any error messages when you started the Gimp from the command line?

If it uses python, do you need to call python #!/usr/bin/python?

Does it have the right permissions?

When I add those corrections, I get the menu item

Owen

Hello,

i have written my Gimp python plugin so far:

#!/usr/bin/python

from gimpfu import * import os
import os.path

def python_thumbnailer(this_path): image_formats = [
".psd",
".xcf",
".rgb"
]
num_files = len (os.listdir(this_path)) all_files = os.listdir(this_path)

for this_file in range(num_files): this_ext = ''
this_filepath = this_path+"/"+all_files[this_file] if os.path.isfile(this_filepath): this_ext = splitext(this_filepath)[1]
if this_ext in image_formats:
pdb.gimp_file_load(this_filepath,this_filepath) pdb.gimp_file_save_thumbnail(this_filepath,this_filepath) pdb.gimp_image_delete(this_filepath) pdb.gimp_quit(0)
register(
"python-fu-thumbnailer",
"Generating thumbnails",
"Generating thumbnails for Nautilus via Gimp", "Eckhard M. Jaeger",
"Eckhard M. Jaeger",
"2007",
"/Xtns/Nautilus Thumbnailer...",
"",
[
(PF_STRING, "this_path", "Directory Path", ""), ],
[],
python_thumbnailer)

main()

But when i try to execute it with gimp-console -i -n -f -d -s -b '(python_thumbnailer RUN-NONINTERACTIVE "/home/agy/psd_samples")'

i get always batch command: experienced an execution error.

Did somebody know what is wrong? Thanx.

-
|\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Hello David,

thanks for your help i get it fixed! http://my.opera.com/area42/blog/nautilus-thumbnailer-update

- |\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de

Am Freitag, den 14.12.2007, 08:17 +1030 schrieb David Gowers:

Hi Eckhard,

On Dec 14, 2007 5:36 AM, Eckhard M. Jäger wrote:

Hello David,

i followed your idea about doing the loop over the files inside Gimp (i attached the script).
I tested the script line by line using the builtin Python console of Gimp and it worked well so far.

But when i try run this script from a shel using gimp-console -i -n -f -d -s -b '(python_thumbnailer "/home/agy/test")'

I always getting the message "batch command: experienced an execution error."

Do you have any idea what went wrong?

You can find out yourself just by looking at gimp's output in a terminal. The error is in this line:

this_ext = splitext(this_filepath)[1]

Thanx!

-
|\/\/\/|
| |
| (O)(O) Bart.
C _) bart@neeneenee.de
| ,_/
| / - Ich bin nicht berechtigt Aushilfslehrer zu feuern - / \
http://www.neeneenee.de