zaprat

#!/bin/zsh
############################################################################
# author: milomouse <vincent[at]fea.st>                                    #
# detail: banish the mouse cursor to bottom-right corner of the screen and #
#         disable touchpad (optional); also undo this by returning mouse   #
#         to last position (or center of screen) and enabling touchpad.    #
############################################################################
# depend: xdotool: for controlling the mouse                               #
#         xdpyinfo: for finding screen dimensions                          #
#         synclient: for controlling the touchpad in laptops (optional)    #
############################################################################
unsetopt nomatch
scriptname=$(print - $0(^:t))

## VARIABLE: set a temporary file for storing mouse position.
FILE="/tmp/user-keep/${USER}/.${scriptname}"

## CODE: do not edit below this line unless you know what you are doing.
function _help() {
  << EOF
usage: ${scriptname} [option]
options:
    -t | --toggle    Enable or disable mouse
    -d | --disable   Force disabling of mouse
    -e | --enable    Force enabling of mouse
    -s | --show      Display \$FILE location
    -h | --help      Display this message

depends:
    xdotool ($(print ${${${:-=xdotool}/=*/not found}/\/*/installed}))
    xdpyinfo ($(print ${${${:-=xdpyinfo}/=*/not found}/\/*/installed}))
    synclient ($(print ${${${:-=synclient}/=*/not found}/\/*/installed})) [optional]
EOF
exit
}

function __dimensions() {
  for exe in xdotool xdpyinfo; do
    which ${exe} &>/dev/null || { print "Missing required program: ${exe}" ; _err=1 }
  done
  [[ ${+_err} == 1 ]] && exit 1
  xy=${${${${${(M)${"$(xdpyinfo 2>/dev/null)"}#*dimensions:*\)}#*dimensions*:}/pixels*}// }/x/ }
  x=${${(s: :)xy}[1]}
  y=${${(s: :)xy}[2]}
}

function _mayberat() {
  if [[ ${+FILE} == "0" ]]; then
    print "You must set a temp file; see source code." && exit 1
  fi
  if [[ ! -d ${FILE:h} ]]; then
    print "Directory for file does not existing, attempting to create..."
    mkdir -p ${FILE:h} || { print "Could not create \"${FILE:h}\", make sure you have proper write permissions." ; exit 1 }
  fi
  if [[ -f ${FILE} ]]; then
    _yesrat
  else
    _norat
  fi
}

function _yesrat() {
  __dimensions
  if [[ ${+DISPLAY} == 1 ]]; then
    if [[ -f ${FILE} && ${#$(<${FILE})} -eq 2 ]]; then
      xdotool mousemove $(<${FILE}) &>/dev/null
      rm -f ${FILE} &>/dev/null
    else
      xdotool mousemove $(($(print ${x})/2)) $(($(print ${y})/2)) &>/dev/null
      rm -f ${FILE} &>/dev/null
    fi
    which synclient &>/dev/null && synclient TouchpadOff=0 &>/dev/null
  else
    print "\$DISPLAY unavailable, aborting."
    exit 1
  fi
}

function _norat() {
  __dimensions
  if [[ ${+DISPLAY} == 1 ]]; then
    print ${${${$(xdotool getmouselocation 2>/dev/null)[1,2]//:/}#x}#y} >>! ${FILE}
    xdotool mousemove $(print ${xy}) &>/dev/null
    which synclient &>/dev/null && synclient TouchpadOff=1 &>/dev/null
  else
    print "\$DISPLAY unavailable, aborting."
    exit 1
  fi
}

[[ -z $1 ]] && _help
case $1 in
  '-t'|'--toggle')  _mayberat ;;
  '-d'|'--disable') _norat ;;
  '-e'|'--enable')  _yesrat ;;
  '-s'|'--show')    print ${FILE} ; exit ;;
  '-h'|'--help')    _help ;;
  *) [[ -z $@ ]] && _help || { print "unrecognized operation: $@ (see --help for usage)" ; exit 1 } ;;
esac