/*

* Copyright (c) 2006 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:   Alf system effects

*

*/

#ifndef ALFSYSTEMEFFECTS_H

#define ALFSYSTEMEFFECTS_H

#include <e32base.h>

#include <alf/AlfTransEffectPlugin.h>

#include <akntranseffect.h>

#include "alftfxplugincommon.hrh"

// CONSTANTS

const TUid KAlfTfxSystemEffectsImpUid = { KAlfTfxSystemEffectsImpUidValue };

// CLASS DECLARATION

/**

 *  System effects class for ALF server plugin

 *

 *  @since S60 v3.2

 */

class CAlfSystemEffects:	public CBase, public MAlfTransEffectPlugin

	{

	public: // Construction and destruction

    	/**

     	* Create a new instance of the interface

     	* 

     	* @return pointer to the instance

     	*/

			static MAlfTransEffectPlugin* NewExtensionL();

    	/**

     	* Destructor

     	*/

			virtual ~CAlfSystemEffects();

	private: // From MAlfTransEffectPlugin

    	TInt GetSupportedEffects( RArray<TInt>& aSupportedEffectIds );

    	TInt StartPhase( TInt aPhaseId, TInt aEffectId, CAlfSrvEffectEnv& aEffectEnv, const TDesC8* aParams );

    	TInt Abort() { return KErrNone; };

    	TInt AddEventObserver( MAlfTransEffectObserver* /*aObserver*/, TInt /*aEvents*/, const TDesC8* /*aParams*/ ) { return KErrNone; };

   		TInt RemoveEventObserver( MAlfTransEffectObserver* /*aObserver*/, TInt /*aEvents*/ ) { return KErrNone; };

  		TInt GetEventState( TInt /*aEvent*/, TInt* /*aState*/, TDes8* /*aParams*/ ) { return KErrNone; };

	private: // New

    	/**

     	* Leaving version of StartPhase().

     	*/

	    TInt DoStartPhaseL( TInt aPhaseId, TInt aEffectId, CAlfSrvEffectEnv& aEffectEnv, const TDesC8* aParams );

	    void ShowVisibleGroupsAndMakeNonTransparentL(CAlfSrvEffectEnv& aEffectEnv);

	    void HideGroupsAndMakeTransparentL(CAlfSrvEffectEnv& aEffectEnv);

private: // Construction and destruction

    	/**

     	* C++ contructor

     	*/

			CAlfSystemEffects();

    	/**

     	* Second phase constructor

     	*/

			void ConstructL();

	};

#endif // ALFSYSTEMEFFECTS_H