127     void UpdateViewPort(

   127     void UpdateViewPort(

   128             TPoint& aViewPortTopLeft ,

   128             TPoint& aViewPortTopLeft ,

   129             TInt aTransitionTime ,

   129             TInt aTransitionTime ,

   130             TSize  *apViewPortDimension = NULL,

   130             TSize  *apViewPortDimension = NULL,

   131             TInt aPrimarySliderLevel = -1);

   131             TInt aPrimarySliderLevel = -1);

   132 private:// From MGlxTvObserver

   138 private:// From MGlxTvObserver

   133     virtual void HandleTvStatusChangedL ( TTvChangeType aChangeType );

   139     virtual void HandleTvStatusChangedL ( TTvChangeType aChangeType );

   134 

   140 

   135 private:  // From CAlfControl

   141 private:  // From CAlfControl

   136     TBool OfferEventL(const TAlfEvent &aEvent);

   142     TBool OfferEventL(const TAlfEvent &aEvent);