add gamecontroller to kivy?

controller.py

"""
Game controller input for Kivy.

Open game controllers as they become available, expose with full SDL2 API.
"""

# special version of sdl (pysdl2-cffi) that doesn't explictly link to a particular version
import sdl

JOYSTICK_EVENTS = (
    sdl.JoyDeviceEvent,
    sdl.JoyAxisEvent,
    sdl.JoyHatEvent,
    sdl.JoyBallEvent,
    sdl.JoyButtonEvent,
    sdl.ControllerDeviceEvent,
    sdl.ControllerAxisEvent,
    sdl.ControllerButtonEvent,
)

@sdl.ffi.callback("int (void *, SDL_Event *)")
def eventWatch(data, event):
    event = sdl.Event(event)
    sdl.ffi.from_handle(data).event(event)
    return 1

class KivyController:
    """
    Manage SDL2 joysticks.
    """
    def __init__(self):
        self._handle = sdl.ffi.new_handle(self)

    def install(self):
        """
        Attach to SDL2 event loop
        """
        sdl.init(sdl.INIT_GAMECONTROLLER|sdl.INIT_JOYSTICK)
        sdl.addEventWatch(eventWatch, self._handle)

        self.joysticks = {}
        self.controllers = {}

    def event(self, event: sdl.Event):
        """
        Handle wrapped SDL2 event
        """
        event = event.unwrapEvent()
        if isinstance(event, JOYSTICK_EVENTS):
            print(event)

        if isinstance(event, sdl.ControllerDeviceEvent):
            if event.type == sdl.CONTROLLERDEVICEADDED:
                j = sdl.gameControllerOpen(event.which)
                self.controllers[j.gameControllerGetJoystick().joystickInstanceID()] = j
            elif event.type == sdl.CONTROLLERDEVICEREMOVED:
                j = self.controllers.pop(event.which)
                j.gameControllerClose()

        elif isinstance(event, sdl.JoyDeviceEvent):
            if event.type == sdl.JOYDEVICEADDED:
                j = sdl.joystickOpen(event.which)
                self.joysticks[j.joystickInstanceID()] = j
            elif event.type == sdl.JOYDEVICEREMOVED:
                j = self.joysticks.pop(event.which)
                # need to close?
                j.joystickClose()