Thunar Custom Actions: Pictures Batch Resize with Zenity Progress Bar and Convert

This is e better version of my old picture resize script. It uses Zenity to ask for the resizing percentage and to show a progress bar while the script is working.

Screenshots

Resize Script Enter Percentage

Resize Script Progress Bar

Resize Script Work Completed

Bash Script

 1 #!/bin/bash
 2 
 3 
 4 # paths, constants, etc.
 5 PICPATH="$1"
 6 TOTALPICS="$((($# - 1)))"
 7 STEP="$(((100 / $TOTALPICS)))"
 8 PROGR=0
 9 MINSIZE=1
10 MAXSIZE=500
11 
12 # get the new size percentage, check it and set output directory path
13 SIZE=""
14 while [ -z "$SIZE" ] || [[ $SIZE<$MINSIZE ]] || [[ $SIZE>$MAXSIZE ]]; do
15     SIZE="$(zenity --entry --title="Picture Resize" --text="Enter percentage...")"
16 
17     # exit if cancel pressed
18     [[ $? != 0 ]] && exit 0
19 
20     # check range
21     if [[ $SIZE<$MINSIZE ]] || [[ $SIZE>$MAXSIZE ]]; then
22         zenity --error --text="$SIZE% is outside the accepted range: 1% - 500%!"
23     fi
24 done
25 
26 OUTPATH="resize_$SIZE%"
27 
28 # check if output directory exists
29 [ -d "$PICPATH/$OUTPATH" ] || mkdir "$PICPATH/$OUTPATH"
30 shift
31 
32 # convert pics, show progress bar
33 while (( $# )); do
34     convert "$PICPATH/$1" -resize "$SIZE%" "$PICPATH/$OUTPATH/resized_$SIZE%-$1"
35     ((PROGR+=$STEP))
36     echo $PROGR
37     shift
38 done | zenity --progress --title="Picture Resize" --text="working..." --percentage=0 -
39                                  -auto-close
40 
41 # check return value and print message depending on it
42 [[ $? == 0 ]] && zenity --info --title="Picture Resize" --text="All done!" || zenity -
43        -error --text="Canceled!"

Add Thunar Custom Action

Please refer to this article for adding a custom action to Thunar.
Here is a screenshot of my custom action for this resizing script.

Note that the bash script needs two "thunar arguments" :

1. Path to the pictures to be resized -> %d
2. Pictures list -> %N