aerosnap is a feature I sorely miss on Linux. I have been able to recreate its functionality for a single screen, but I have been unable to make it work correct

aerosnap is a feature I sorely miss on Linux. I have been able to recreate its functionality for a single screen, but I have been unable to make it work correctly for a dual screen setup. It seems that have multiple screens in Linux creates a drawing canvas that is rectangular in shape and it is not clear how to find out the more complicated 2 rectangle shape. I would like to see this issue addressed.