30     {

    30     {

    31 public:

    31 public:

    32     IMPORT_C virtual ~CHuiFxLayer();

    32     IMPORT_C virtual ~CHuiFxLayer();

    33 

    33 

    34     IMPORT_C virtual TBool PrepareDrawL(CHuiFxEngine& aEngine);

    34     IMPORT_C virtual TBool PrepareDrawL(CHuiFxEngine& aEngine);

    35     virtual void Draw(CHuiFxEngine& aEngine, CHuiGc& aGc, CHuiFxRenderbuffer& aTarget, CHuiFxRenderbuffer& aSource, TBool aHasSurface) = 0;

    36     virtual void Draw(CHuiFxEngine& aEngine, CHuiGc& aGc, CHuiFxRenderbuffer& aTarget, CHuiFxRenderbuffer& aSource, TBool aHasSurface) = 0;

    36     IMPORT_C virtual TBool VisualArea(TRect& aRect);

    37     IMPORT_C virtual TBool VisualArea(TRect& aRect);

    37     IMPORT_C virtual TBool Margin( TMargins &m );

    38     IMPORT_C virtual TBool Margin( TMargins &m );

    38     IMPORT_C virtual void AdvanceTime(TReal32 aElapsedTime);

    39     IMPORT_C virtual void AdvanceTime(TReal32 aElapsedTime);

    39     IMPORT_C virtual TBool Changed() const;

    40     IMPORT_C virtual TBool Changed() const;