Default Inverted Drawing mode 'clear' possible?

@ all
is it possible to make a rectangular module clearing everything except this rect? Something like "Drawing mode inverted clear"?
Galaxy Nexus i9250 | ParanoidAndroid 4.6 beta1 | Stock PA Kernel | TWRP 2.7.1.0
Galaxy Note 10.1 GT-N8000 | Gnabo Rom V6.5 | Stock Kernel | TWRP 2.7.1.0