Rotate images with GIMP using Caja's context menu

caja

#1

I know there is a caja-image-converter plugin for this, that uses ImageMagic to rotate the images.
Images can be manipulated with gimp-python as well.
You’ll need GIMP, so install it.

apt update && apt install gimp

I made this for Thunar originaly, so this is how to use it with Caja with an extra zenity progressbar.
Create a script that will be the main script. Place it wherever you want, name it gimp-rotate.sh , and make it executable.

[code]#!/bin/sh

Rotate with python-fu

if [ $# -ne 2 ];
then
echo ‘Usage: gimp-rotate.sh “file” [right|left|180]’
exit
fi

case “$2” in
right)
OPT=0
;;
left)
OPT=2
;;
180)
OPT=1
;;
*)
echo ‘Usage: gimp-rotate.sh “file” [right|left|180]’
exit
;;
esac

gimp -d -i --batch-interpreter=python-fu-eval -b - << EOF
import gimpfu

def rotate(filename):
img = pdb.gimp_file_load(filename, filename)
layer = pdb.gimp_image_merge_visible_layers(img, 1)
pdb.gimp_image_rotate(img, ‘${OPT}’)
pdb.gimp_file_save(img, layer, filename, filename)
pdb.gimp_image_delete(img)

rotate(’${1}’)

pdb.gimp_quit(1)
EOF[/code]
Now create the scripts in /home/your_username/.config/caja/scripts/ to call the main script from the Caja context (right-click) menu. Remember to change the /path/to part in the scripts and make them executable.
GIMP rotate left

#!/bin/sh for arg do /path/to/gimp-rotate.sh "$arg" left echo "#${arg}" done | zenity --progress --pulsate --auto-close \ --text="Rotating images with <b>GIMP</b>" --title="Working"
GIMP Rotate Right

#!/bin/sh for arg do /path/to/gimp-rotate.sh "$arg" right echo "#${arg}" done | zenity --progress --pulsate --auto-close \ --text="Rotating images with <b>GIMP</b>" --title="Working"
GIMP Rotate 180

#!/bin/sh for arg do /path/to/gimp-rotate.sh "$arg" 180 echo "#${arg}" done | zenity --progress --pulsate --auto-close \ --text="Rotating images with <b>GIMP</b>" --title="Working"

Bonus:
This is how to resize images, and keep the aspect ratio of images:
The main script gimp-resize.sh creates the resized image in the same dir

[code]#!/bin/sh

Resize, keep aspect ratio

if [ $# -ne 4 ];
then
echo “Missing parameter!”
echo ‘Usage: gimp-resize.sh “file_in” “file_out” width height’
exit
fi

gimp -d -i --batch-interpreter=python-fu-eval -b - << EOF
import gimpfu
import math

def resize(filename_in, filename_out, max_width, max_height):

img = pdb.gimp_file_load(filename_in, "")
layer = pdb.gimp_image_merge_visible_layers(img, 1)

width = int(layer.width)
height = int(layer.height)

max_width = int(max_width)
max_height = int(max_height)

if max_width <= 0:
    max_width = width
if max_height <= 0:
    max_height= height

if width <= max_width and height <= max_height:
    print "Nothing to do, returning"
    return

image_aspect    = float(width) / float(height)

boundary_aspect = float(max_width) / float(max_height)

if image_aspect > boundary_aspect:
    new_width = max_width
    new_height= int(round(new_width/image_aspect))
else:
    new_height = max_height
    new_width = int(round(image_aspect*new_height))

new_name = filename_out

pdb.gimp_image_scale(img, new_width, new_height)
pdb.gimp_file_save(img, layer, new_name, new_name)

resize("${1}", “${2}”, “${3}”, “${4}”)

pdb.gimp_quit(1)
EOF[/code]
and the tcript for Caja /home/user_name/.config/caja/scripts/Gimp Resize 800x600 (change the path to the main script)

#!/bin/sh for arg do /path/to/gimp-resize.sh "${arg}" "${arg%%.*}_resized.${arg##*.}" 800 600 echo "#${arg}" done | zenity --progress --pulsate --auto-close \ --text="Resizing images with <b>GIMP</b>" --title="Working"
Tip: You can make several scripts with different size requests as well as change the output image filename.

/path/to/gimp-resize.sh "${arg}" "${arg%%.*}_resized.${arg##*.}" 500 400 ^ script "image" " output image filename" max_width max_height


Preview pictures using Gimp
#2

So I guess you’d have to install some package before that would work right?
import gimpfu won’t work on the default environment.


#3

Yes, that’s correct. It requires GIMP.
I will add it to the text. Thank you for reminding me.

GIMP-Python is a set of Python modules that act as a wrapper to libgimp.
[*]https://github.com/GNOME/gimp/blob/master/plug-ins/pygimp/gimpfu.py