ysim/README.md

## README.md

      
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    Toggle the touchpad on/off with a keyboard shortcut on Ubuntu 16.04

The keyboard on the Dell XPS is far too sensitive and I would prefer for the touchpad to be disabled while a mouse is plugged in.
Instructions


In the Terminal, determine the device number that corresponds to your touchpad by running:
 xinput

For instance, this is the output I get on my laptop:
 $ xinput
 ⎡ Virtual core pointer                          id=2    [master pointer  (3)]
 ⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
 ⎜   ↳ SteelSeries Kana Gaming Mouse             id=10   [slave  pointer  (2)]
 ⎜   ↳ DLL075B:01 06CB:76AF Touchpad             id=12   [slave  pointer  (2)]
 ⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
     ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
     ↳ Power Button                              id=6    [slave  keyboard (3)]
     ↳ Video Bus                                 id=7    [slave  keyboard (3)]
     ↳ Power Button                              id=8    [slave  keyboard (3)]
     ↳ Sleep Button                              id=9    [slave  keyboard (3)]
     ↳ Integrated_Webcam_HD                      id=11   [slave  keyboard (3)]
     ↳ Intel Virtual Button driver               id=13   [slave  keyboard (3)]
     ↳ Intel HID events                          id=14   [slave  keyboard (3)]
     ↳ AT Translated Set 2 keyboard              id=15   [slave  keyboard (3)]
     ↳ Dell WMI hotkeys                          id=17   [slave  keyboard (3)]

So my device number is 12.


Copy toggle-touchpad somewhere on your $PATH and make it executable.


Replace the device_number variable in toggle-touchpad as appropriate.


Under System Settings > Keyboard > Shortcuts > Custom Shortcuts, create a new shortcut,
name it (e.g. "Toggle touchpad on/off"), and set the command to toggle-touchpad. I set the shortcut
to Super-Z on mine (Super refers to the Windows key).


Now you can hit Super-Z to toggle the touchpad on/off.


References


https://askubuntu.com/questions/863746/keyboard-shortcut-to-toggle-enable-disable-laptop-touchpad
https://askubuntu.com/questions/844151/enable-disable-touchpad


## toggle-touchpad
#!/bin/bash

# This is the device number matching touchpad
# Determine the device number by running `xinput`
device_number=12

# Determine the state (0 for disabled, 1 for enabled)
state="$(xinput list-props "${device_number}" | grep "Device Enabled" | grep -o "[01]$")"

if [[ "${state}" == '0' ]]; the
    xinput --enable "${device_number}"
    DISPLAY=:0 notify-send --urgency=low "Touchpad enabled"
else
    xinput --disable "${device_number}"
    DISPLAY=:0 notify-send --urgency=low "Touchpad disabled"
fi

exit 0
	#!/bin/bash

	# This is the device number matching touchpad
	# Determine the device number by running `xinput`
	device_number=12

	# Determine the state (0 for disabled, 1 for enabled)
	state="$(xinput list-props "${device_number}" \| grep "Device Enabled" \| grep -o "[01]$")"

	if [[ "${state}" == '0' ]]; the
	xinput --enable "${device_number}"
	DISPLAY=:0 notify-send --urgency=low "Touchpad enabled"
	else
	xinput --disable "${device_number}"
	DISPLAY=:0 notify-send --urgency=low "Touchpad disabled"
	fi

	exit 0