Python Stage.transition_in方法代碼示例

# 需要導入模塊: from stage import Stage [as 別名]
# 或者: from stage.Stage import transition_in [as 別名]

#.........這裏部分代碼省略.........

        If we're idle:
            - do nothing

        If we're locked:
            - show the unlock widget (if it's already visible, this also has
              the effect of resetting the unlock timeout - see Stage.py)
            - show the mouse pointer, so the user can navigate the unlock screen.

        If we're Active but not Locked, simply deactivate (destroying the Stage
        and returning the screensaver back to idle mode.)
        """
        if not status.Active:
            return

        if status.Locked and self.stage.initialize_pam():
            self.stage.raise_unlock_widget()
            self.grab_helper.release_mouse()
            self.stage.maybe_update_layout()
        else:
            GObject.idle_add(self.idle_deactivate)

    def idle_deactivate(self):
        self.set_active(False)
        return False

    def spawn_stage(self, away_message, effect_time=c.STAGE_SPAWN_TRANSITION, callback=None):
        """
        Create the Stage and begin fading it in.  This may run quickly, in the case of
        user-initiated activation, or slowly, when the session has gone idle.
        """
        try:
            self.stage = Stage(self.screen, self, away_message)
            self.stage.transition_in(effect_time, callback)
        except Exception:
            print("Could not spawn screensaver stage:\n")
            traceback.print_exc()
            self.grab_helper.release()
            status.Active = False
            self.cancel_timers()

    def despawn_stage(self, effect_time=c.STAGE_DESPAWN_TRANSITION, callback=None):
        """
        Begin destruction of the stage.
        """
        self.stage.cancel_unlocking()
        self.stage.transition_out(effect_time, callback)

    def on_spawn_stage_complete(self):
        """
        Called after the stage has faded in.  All user events are now
        redirected to GrabHelper, our status is updated, our active timer
        is started, and emit an active-changed signal (Which is listened to
        by our ConsoleKit client if we're using it, and our own ScreensaverService.)
        """
        self.grab_stage()

        status.Active = True

        self.emit("active-changed", True)

        self.start_timers()

    def on_despawn_stage_complete(self):
        """
        Called after the stage has faded out - the stage is destroyed, our status

# 需要導入模塊: from stage import Stage [as 別名]
# 或者: from stage.Stage import transition_in [as 別名]
class ScreensaverManager(GObject.Object):
    __gsignals__ = {
        'active-changed': (GObject.SignalFlags.RUN_LAST, None, (bool, )),
    }

    def __init__(self):
        super(ScreensaverManager, self).__init__()

        self.screen = Gdk.Screen.get_default()

        self.activated_timestamp = 0

        self.stage = None

        # Ensure our state
        status.Active = False
        status.Locked = False
        status.Awake = False

        self.grab_helper = GrabHelper(self)
        self.focus_nav = FocusNavigator()

        self.session_client = singletons.SessionClient
        trackers.con_tracker_get().connect(self.session_client,
                                           "idle-changed", 
                                           self.on_session_idle_changed)

        self.cinnamon_client = singletons.CinnamonClient

        singletons.LoginClientResolver(self)

##### Service handlers (from service.py)

    def is_locked(self):
        return status.Locked

    def lock(self, msg=""):
        if not status.Active:
            if self.set_active(True, msg):
                self.stop_lock_delay()
                if utils.user_can_lock():
                    status.Locked = True
        else:
            if utils.user_can_lock():
                status.Locked = True
            self.stage.set_message(msg)

    def unlock(self):
        self.set_active(False)
        status.Locked = False
        status.Awake = False

    def set_active(self, active, msg=None):
        if active:
            if not status.Active:
                self.cinnamon_client.exit_expo_and_overview()
                if self.grab_helper.grab_root(False):
                    if not self.stage:
                        self.spawn_stage(msg, c.STAGE_SPAWN_TRANSITION, self.on_spawn_stage_complete)
                    return True
                else:
                    status.Active = False
                    return False
            else:
                self.stage.set_message(msg)
                return True
        else:
            if self.stage:
                self.despawn_stage(c.STAGE_DESPAWN_TRANSITION, self.on_despawn_stage_complete)
            self.grab_helper.release()
            return True
        return False

    def get_active(self):
        return status.Active

    def get_active_time(self):
        if self.activated_timestamp != 0:
            return int(time.time() - self.activated_timestamp)
        else:
            return 0

    def simulate_user_activity(self):
        if not status.Active:
            return

        if status.Locked:
            self.stage.raise_unlock_widget()
            self.grab_helper.release_mouse()
        else:
            self.set_active(False)

        self.stage.maybe_update_layout()

#####

    def spawn_stage(self, away_message, effect_time=c.STAGE_SPAWN_TRANSITION, callback=None):
        try:
            self.stage = Stage(self.screen, self, away_message)
            self.stage.transition_in(effect_time, callback)
#.........這裏部分代碼省略.........