/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   

*

*/

#ifndef HUIFXGROUPLAYER_H_

#define HUIFXGROUPLAYER_H_

#include "HuiFxLayer.h"

class CHuiFxGroupLayer: public CHuiFxLayer

    {

public:

    IMPORT_C ~CHuiFxGroupLayer();

    IMPORT_C static CHuiFxGroupLayer* NewL(TBool aIsRoot = EFalse);

    IMPORT_C TBool PrepareDrawL(CHuiFxEngine& aEngine);

    IMPORT_C void Draw(CHuiFxEngine& aEngine, CHuiGc& aGc, CHuiFxRenderbuffer& aTarget, CHuiFxRenderbuffer& aSource, TBool aHasSurface);

    IMPORT_C void AddLayerL(const CHuiFxLayer* aLayer); // takes ownership

    IMPORT_C void AdvanceTime(TReal32 aElapsedTime);

    IMPORT_C TBool Changed() const;

    IMPORT_C TBool VisualArea( TRect& aRect );

    IMPORT_C TBool Margin( TMargins &aMargin ); 

    IMPORT_C void ApplyMargin( TRect &aRect );   

    // effect cache methods

    IMPORT_C CHuiFxGroupLayer *CloneL() const;

    IMPORT_C void SetExtRect( TRect *aExtRect );

    IMPORT_C void SetVisual( CHuiVisual *aVisual );

    IMPORT_C void SetVisual( MHuiEffectable *aVisual );

    TBool IsAnimated() const;

    TBool IsTransformed() const; 

    TBool IsFiltered() const; 

    TBool IsSemitransparent() const;

    TInt LayerCount() const;

    CHuiFxLayer& Layer(TInt aIndex) const;

    void FxmlVisualInputs(RArray<THuiFxVisualSrcType> &aArray);

    TBool FxmlUsesOpaqueHint() const;

    virtual void EnableMarginApplyChildren(TBool aEnable);

    virtual void SetAlwaysReadSurfacePixels(TBool aAlwaysReadSurfacePixels);

protected:

    IMPORT_C CHuiFxGroupLayer();

    IMPORT_C void ConstructL(TBool aIsRoot);

private:

    RPointerArray<CHuiFxLayer> iLayers;

    TBool                   iIsRoot;

    TRect                   iBackbufferRect;

    };

#endif /*HUIFXGROUPLAYER_H_*/