try:
    import Xlib.X
    import Xlib.protocol.event
except ImportError:
    pass


class SelectFogAction:

    def __init__(self):
        self._button = Xlib.X.Button1

    def execute(self, extended_controls, xkeyevent):
        engine_geometry = extended_controls._engine_window.get_geometry()
        smaller_dimension = min(engine_geometry.width, engine_geometry.height)
        attr = dict(
            window=extended_controls.engine_window,
            detail=self._button,
            state=xkeyevent.state,
            event_x=int(engine_geometry.width/2-smaller_dimension/2+smaller_dimension*0.619), # 908,
            event_y=int(engine_geometry.height/2-smaller_dimension/2+smaller_dimension*0.453), # 1064,
            # apparently root_x & root_y do not need to correspond with event_x/y.
            # attributes are still required to be set.
            root_x=0, # xkeyevent.root_x,
            root_y=0, # xkeyevent.root_y,
            child=xkeyevent.child,
            root=xkeyevent.root,
            time=xkeyevent.time, # X.CurrentTime
            same_screen=xkeyevent.same_screen,
        )
        if isinstance(xkeyevent, Xlib.protocol.event.KeyPress):
            e = Xlib.protocol.event.ButtonPress(**attr)
        else:
            e = Xlib.protocol.event.ButtonRelease(**attr)
        extended_controls.engine_window.send_event(e)


class RewriteKeyEventAction:

    def __init__(self, keysym=None):
        self._keysym = keysym

    def execute(self, extended_controls, xkeyevent):
        attr = dict(
            window=extended_controls.engine_window,
            detail=xkeyevent.detail,
            state=xkeyevent.state,
            root_x=xkeyevent.root_x,
            root_y=xkeyevent.root_y,
            event_x=xkeyevent.event_x,
            event_y=xkeyevent.event_y,
            child=xkeyevent.child,
            root=xkeyevent.root,
            time=xkeyevent.time,  # X.CurrentTime
            same_screen=xkeyevent.same_screen,
        )
        if self._keysym:
            attr['detail'] = extended_controls.xdisplay.keysym_to_keycode(
                self._keysym)
        extended_controls.engine_window.send_event(
            type(xkeyevent)(**attr),
        )


class ForwardKeyEventAction(RewriteKeyEventAction):

    def __init__(self):
        super().__init__(keysym=None)


class ToggleExtendedControlsAction:

    def execute(self, extended_controls, xkeyevent):
        if isinstance(xkeyevent, Xlib.protocol.event.KeyPress):
            extended_controls.toggle()