Custom Keyboard shortcut shell script, drag and drop mouse clicking with a keyboard key!

drag-and-drop.sh

#!/bin/bash

# xinput --list                   to identify the different input devices availiable to you.
# xinput query-state [device]     where the device is a keyboard.  Returns all the keys' states.
# xdotool mousedown 1             automates holding down the left mouse click.
# xdotool mouseup 1               automates releasing the left mouse click.

# This program begins by checking if the keyboard button is pressed at the time of its execution.
# If the keyboard button is in the DOWN position, then "press down" the mouse left click.
# wait for a bit (but not too long!), and then check the keyboard position again.
# Once the keyboard button has been released, break out of the loop, and "release" the mouse left click!

if [ $(xinput query-state 13 | grep 'key\[49' | sort) = "key[49]=down" ]; then

	xdotool mousedown 1

	while [ $(xinput query-state 13 | grep 'key\[49' | sort) = "key[49]=down" ]; do
		sleep 0.1
		xdotool key --repeat-delay DELAY 100
	done

fi

xdotool mouseup 1

xdotool key --repeat-delay DELAY 100 was added in to prevent the actual keypress from continuing. For example, It prevents you from typing "aaaaaaaaaaaaaaaaaaaaaaaaaaaa" while holding down a key.