bash script to easily switch to next workspace in Ubuntu compbiz using wmctrl

workspace.sh

#!/usr/bin/env bash

# Switch to next viewport
next_viewport()
{
	if (( X+VIEWPORT_WIDTH >= TOTAL_WIDTH ))
	then
		X=0

		if (( Y+VIEWPORT_HEIGHT >= TOTAL_HEIGHT ))
		then
			Y=0
		else
			(( Y += VIEWPORT_HEIGHT ))
		fi
	else
		(( X += VIEWPORT_WIDTH ))
	fi

	wmctrl -o $X,$Y
}

# Run given function for each workspace
#
# @param ... - function and arguments (optional)
workspace()
{
	wmctrl -d | while read IDX STAR DG TOTAL VP VPN WA WAN VIEWPORT NA
	do
		local TOTAL_WIDTH=${TOTAL%x*}
		local TOTAL_HEIGHT=${TOTAL#*x}
		local WA_WIDTH=${WAN%,*}
		local WA_HEIGHT=${WAN#*,}
		local VIEWPORT_WIDTH=${VIEWPORT%x*}
		local VIEWPORT_HEIGHT=${VIEWPORT#*x}
		local X=${VPN%,*}
		local Y=${VPN#*,}

		(( VIEWPORT_WIDTH += WA_WIDTH ))
		(( VIEWPORT_HEIGHT += WA_HEIGHT ))

		${@:-next_viewport}
	done
}

if [ $BASH_SOURCE == $0 ]
then
	workspace ${@:-next_viewport}
fi