Bash script for a Quake type terminal

quake_term

#!/bin/bash
# (c) Mark Fiers
# Released under GPLv3

# Simple bash script to have a quake like terminal
# Bind this script to any key in your WM config
#
# works with openbox, but should work with any EWMH/NetWM compliant
# window manager
#
# Hard coding gnome-terminal & tmux - but that is easily changed.
# Note - I've set up a specific profile for the quake window - so it
# it easily recognizable. You MUST make sure that gnome-terminal (or any
# emulator) does NOT change the window title - this script relies on there
# being (just one) window titled quake.

#first - is the window already active?
quake_term_active=`wmctrl -l | grep 'quake$'`
if [[ -z "${quake_term_active}" ]]
then
    # no quake terminal - start one
    gnome-terminal --profile=quake -t quake -e 'tmux attach'
    wmctrl -t quake add,above,skip_taskbar

    #determine terminal width - and set dimensions
    screen_width=`(xrandr 2>/dev/null) | grep '*' 2>/dev/null | cut -f 1 -d'x'`
    if [[ "$screen_width" -gt 2500 ]]
    then
        # if terminal width >> 2500 - assume it is a dual screen setup
        # halve the size
        screen_width=$(($screen_width/2))
    fi
    wmctrl -l 
    wmctrl -r quake -e 0,1,20,${screen_width//[[:space:]]},400
    exit 0
fi

#check if the terminal is on the current desktop
current_desktop=`wmctrl -d | grep '*' | cut -f 1 -d' '`

#desktop where the quake window resides
quake_desktop=`wmctrl -l | grep 'quake$' | cut -c12-14`

if [[ "$current_desktop" -eq "$quake_desktop" ]]
then
    # the window is on the current desktop

    # figure out if the quake window is active (cannot do that with wmctrl??!)
    active_window_id=`xprop -root | grep '^_NET_ACTIVE_WINDOW' | cut -f2 -d#`
    quake_window_id=`wmctrl -l | grep 'quake$' | cut -f 1 -d' '`
    if [[ "$(($active_window_id))" -eq "$(($quake_window_id))" ]]
    then
        #window is active and on this desktop - hide
        wmctrl -r quake -b add,hidden
    else
        # window is not active and on this desktop - hide
        wmctrl -r quake -b remove,hidden
        wmctrl -R quake
    fi
else
    #quake window is on another desktop - get it & display
    wmctrl -r quake -b remove,hidden
    wmctrl -R quake
fi