Restrict mouse to screen

pointer_barrier.sh

#!/bin/bash 

#Not my script! Found it when searching the web for this kind of option.
#Saved for future reference
#Run with "bash restrictmouse.sh 0 0 1919 1080" to restrict the mouse to your first monitor
#Run inside terminal so it's easier to close the script when done
#Needs xdotool to work

borderxl=$1
borderyu=$2
 
borderxr=$3
borderyd=$4
 
check=0
 
echo "Restricting mouse $borderxl $borderyu $borderxr $borderyd"

if [ $borderxl -gt $borderxr ]
then
    check=1
fi
 
if [ $borderyu -gt $borderyd ]
then
    check=1
fi
if [ $check -ge "1" ]
then
    echo "Make sure the first coordinate pair refers to the upper left corner"
    echo "and the second pair refers to the lower right one."
fi
 
if [ $check -lt "1" ]
then
    while [ true ]
    do
        check=0
        xpos=`xdotool getmouselocation | awk '{ print $1}'`
        xpos=${xpos:2}
        #xpos=`getcurpos | awk '{ print $1}'`
        ypos=`xdotool getmouselocation | awk '{ print $2}'`
        ypos=${ypos:2}
        #ypos=`getcurpos | awk '{ print $2}'`
        
        if [ $xpos -gt $borderxr ]
        then
            check=1
            xpos=$borderxr
        fi
    
        if [ $ypos -gt $borderyd ]
        then
            check=1
            ypos=$borderyd
        fi
    
        if [ $xpos -lt $borderxl ]
        then
            check=1
            xpos=$borderxl
        fi
    
        if [ $ypos -lt $borderyu ]
        then
            check=1
            ypos=$borderyu
        fi
    
    
        if [ $check -ge "1" ]
        then
            xdotool mousemove $xpos $ypos
        fi
    done    
fi

toggle_pointer_barrier.sh

#!/bin/sh
if [ "$XDG_SESSION_TYPE" == "wayland" ]
then
    exit
fi

scriptpath='/path/to/pointebarrier/pointer_barrier.sh'

if ! pgrep -f "$scriptpath"
then
    notify-send "Pointer locked to first monitor"
    bash "$scriptpath" 5 5 1901 1075 &
else
    notify-send "Pointer unlocked"
    pkill -f "$scriptpath"
fi

Try wayland, sway has options for this in there config map-output/map-region

Try wayland, sway has options for this in there config map-output/map-region

I plan to switch to it at some point! Probably when some major distros are changing to it, like Kubuntu which is what I'm using.