Suggestion: Can Printer become a trait?

Hi,

I am working on text editor, and I want to have multiple blinking cursors. That's obviously a pain to implement, unless I could wrap a Printer into a wrapper, that would just do the blinking on particular indices. I would just take original Printer and wrap it with something like "CursorAwarePrinter::new(oldPrinter, cursors)" and then use it in drawing function. What do you think?

Regards
NJ Skalski