For Boeing 777 and 787:
Flaps 0: Both leading edge slats and training edge flaps full retracted
Flaps 1: Leading edge slats extended, but trailing edge fully retracted
Flaps 5-20: Takeoff flap settings - Leading edge slats extended with increasing amount of trailing edge flap with increasing handle position.
Flaps 25 and 30: Landing flap settings - Leading edge slats further extended to the gapped position with increasing amounts of trailing edge flap with increasing handle position.
Note that Flap 20 is used for landings when control system is in either the Secondary or Direct reversionary modes.
Flap and slat angles as measured with a protractor on the surface do not match the handle setting numbers, but commonality is kept with regard to the uses of each handle position.