src/scripts/blanker.lua

   1 lock = 0
   2
   3 function blank_and_lock (display)
   4   if lock == 1 then
   5     display.idle_timeout = 10
   6     --lockscreen will kill current display...
   7     screen.command("lockscreen")
   8     lock = 0
   9   else
  10     lock = 1
  11     display.idle_timeout = 2
  12     screen.command("blanker")
  13   end
  14   return 1
  15 end
  16
  17 function reg_blanker(display)
  18   screen.hook(display, "onidle", blank_and_lock)
  19   display.idle_timeout = 10
  20 end
  21
  22 screen.hook("onattach", reg_blanker)
  23 reg_blanker(screen.display())