// Copyright (c) 2007-2009 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 __FBRENDERSTAGE_H__

#define __FBRENDERSTAGE_H__

#include <graphics/wsrenderstage.h>

#include <graphics/wsscene.h>

#include <graphics/wsdisplaycontrol.h>

#include <graphics/wsdisplaymapping.h>

#include "rendertarget.h"

class CRenderTarget;

class MWsScreenDevice;

class MWsDrawableSourceProvider;

class CDisplayPolicy;

class CFbRenderStage;

// An animation throttle to ensure that WSERV is not always busy animating.

class CAnimationThrottle : public CTimer

	{

public:

	static CAnimationThrottle* NewL (CFbRenderStage* aRenderStage);

	~CAnimationThrottle ();

private:

	CAnimationThrottle (CFbRenderStage* aRenderStage);

	void ConstructL ();

	void RunL();

private:

	CFbRenderStage* iRenderStage;

	};

/**

Active object to receive downstream pipeline signals (if the upstream uses signalling).

*/ 

class CRenderStageController : public CActive

	{

public:

	static CRenderStageController* NewL(CFbRenderStage* aRenderStage);

	~CRenderStageController();

	void SetActive();

	TBool IsActive();

private:

	CRenderStageController(CFbRenderStage* aRenderStage);

	void ConstructL();

	void DoCancel();

	void RunL();

private:

	CFbRenderStage* iRenderStage;

	CAnimationThrottle* iAnimationThrottle;

	};

/**

This is the implementation of CWsRenderStage which is created by a CFbRenderStageFactory

*/

class CFbRenderStage :

	public CWsRenderStage,

	public MWsDisplayControl,

	public MWsDisplayMapping,

	public MWsScene

	{

public:

	static CFbRenderStage* NewL(MWsGraphicDrawerEnvironment* aEnv, MWsScreen* aScreen, MWsScreenRedraw* aScreenRedraw, CWsRenderStage* aNextStage);

	~CFbRenderStage();

public: //from CWsRenderStage

	TAny* ResolveObjectInterface(TUint aTypeId);

	void Begin(const TRegion* aRegion);

	void End(TRequestStatus* aFinished);	

public: //from MWsScene

    TInt SetSceneRotation(const TSceneRotation aSceneRotation);

    MWsScene::TSceneRotation SceneRotation() const;

    MWsElement* CreateSceneElementL();

    void DestroySceneElement(MWsElement* aElement);

    TInt InsertSceneElement(MWsElement* aInsertElement, MWsElement* aSubordinateElement);

    TInt RemoveSceneElement(MWsElement* aRemoveElement);

    void ComposePendingScene(TSurfaceId& aOffScreenTarget, TRequestStatus* aCompleted);

    TInt RegisterSurface(const TSurfaceId& aSurface);

    TInt UnregisterSurface(const TSurfaceId& aSurface);

public:

	void DoEnd();

public: // from MWsDisplayControl/MDisplayControlBase

	void NotifyOnDisplayChange(TRequestStatus& aStatus);

	void NotifyOnDisplayChangeCancel();

	void NotifyOnConfigChange(TRequestStatus& aStatus);

	void NotifyOnConfigChangeCancel();

	TInt NumberOfResolutions() const;

	TInt GetResolutions(RArray<TResolution>& aResolutions) const;

	void GetConfiguration(TDisplayConfiguration& aConfig) const;

	TInt SetConfiguration(const TDisplayConfiguration& aConfig);

	TInt PreferredDisplayVersion() const;

public: //from MWsDisplayMapping/MDisplayMapping

	virtual TInt MapCoordinates(TCoordinateSpace aSourceSpace, const TRect& aSource, TCoordinateSpace aTargetSpace, TRect& aTarget) const;

	void SetSizeModeExtent(TRect& aExtent, TBitFlags32 aContext);	

private:

	CFbRenderStage();

	void ConstructL(MWsGraphicDrawerEnvironment* aEnv, MWsScreen* aScreen, MWsScreenRedraw* aScreenRedraw, CWsRenderStage* aNextStage);

private:

	CRenderStageController* iController;

	TRequestStatus* iUpstreamRequestStatus;

	TBool iRequestPending;

	MWsScreenDevice* iNextScreenDevice;

	MWsScene* iNextScene;

	RRegion* iUpdateRegion;

	CRenderTarget* iRenderTarget;

	MWsDisplayControl*				iDisplayControl;

	CDisplayPolicy*					iDisplayPolicy;

	MWsDisplayMapping*				iDisplayMapping;

	MWsDrawableSourceProvider* iDrawableSourceProvider;

	/** Drawable sources for copying iRenderTarget to the next render stage */

	TAny* iDrawableSources[CRenderTarget::EAspectRatioCount];

	};

#endif //__FBRENDERSTAGE_H__