[SOLVED] How to stop bash script after I click cancel on zenity progress window

How to stop bash script after I click cancel on zenity progress window

I'm writting a script using bash script, in this code I have a process that runs together with a zenity progress bar. What is happening is that when I run it, and try to cancel the operation, it will keep running until I clic ctrl+c on the linux terminal, that is meant for cancelling the operation. Since I'm doing this for users that aren't programmers, this can't be the way to stop it.

This is the line I'm talking about:

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH sOutputFile="$DESTINO.pdf" "$FILE" | zenity --progress --title="Processando" --auto-close --width=220 --text="Comprimindo PDF" --pulsate --percentage=0

I thought that I had the answer to solve this problem, because I used it in the other zenity windows like this one:

zenity --width=600 --height=300 --text-info --title="Test" --filename=/tmp/original.txt --editable > /tmp/changed.txt
case $? in
    1)
        exit
    ;;
esac

It works just fine, when I click cancel it stop the script, but when I tried to use it in the progress bar that runs with the gs command, it didn't work, the zenity window closed, but the script kept running. This is how I tried solving it:

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile="$DESTINO.pdf" "$FILE" | zenity --progress --title="Processando" --auto-close --width=220 --text="Comprimindo PDF" --pulsate --percentage=0 
case $? in
    1)
        exit
        ;;
esac

Anyone has ever had this problem? How can I solve it? Thanks.

Solution

Using the answer of my friend @Grobu, I made some changes and got to this result that solved my problem, it stops gs and removes the created PDF from the file, thank you very much!

#!/bin/bash

hup_handler()
{
rm -f "$DESTINO.pdf"
kill 0
}

trap hup_handler HUP

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile="$DESTINO.pdf" "$FILE" | zenity --progress --title="Processando" --auto-close --auto-kill --width=220 --text="Comprimindo PDF" --pulsate --percentage=0 &
wait