No, they can be mechanically controlled, however they are hydraulically actuated. Have a look at the control schematic in the QRH, you can see the mechanical control connects to the hydraulic actuators.
This mechanical control is in place for the failure of the flight control computers. Electric control provided by the PRIM/SEC/FAC to the actuators, the mechanical control backs them up, it is designed to give enough control to get a computer reset and back online, it is not really designed for approach and landing as it is often misunderstood. It is not for a triple hydraulic system failure.
All in FCOM 1.
The A380 can be controlled wih the loss of the aircraft hydraulic system, as they have different actuators that have their own internal backup hydraulic system or electric motor to move the control surface.