How to call a common virtual void to control a timer from any touch ? Screen sleep mode

[justin11]

I would like to implement a screen timeout feature on our design. At timeout the screen would go back to the main screen and then dim the back light. We have everything in place appart from a common trigger that can be used to reset the timmer.

I didn't want to have to manually add a function call to every touch target, so hoping there is a common place to pick this up from.

I would also like to be able to just wake the screen on the first touch and not pass that touch to any of the targets. However, i may just do this by implementing a black touch box that covers all of the targets.

Thanks for any help or pointers anyone can share.