/*

* Copyright (c) 2007-2008 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:    The zoom and pan effect

 *

*/

#ifndef __SHWZOOMANDPANEFFECT_H__

#define __SHWZOOMANDPANEFFECT_H__

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include <alf/alfvisual.h>

#include <alf/alfenv.h>

#include "shweffect.h"

// CLASS DECLARATION

/**

 * CShwZoomAndPanEffect, the Zoom And Pan effect.

 * Zooms and pans in the image in full screen in view mode and performs smooth transition.

 * 

 * @lib shwslideshowengine.lib

 * @internal reviewed 07/06/2007 by Loughlin

 * @internal reviewed 06/06/2007 by Dan Rhodes

 */

NONSHARABLE_CLASS( CShwZoomAndPanEffect ) : public CBase, public MShwEffect

	{

	public:

		/**

		 * Contructor.

		 */

		static CShwZoomAndPanEffect* NewLC();

		/**

		 * Destructor.

		 */

		~CShwZoomAndPanEffect();

	private:

		/**

		 * C++ contructor.

		 */

		CShwZoomAndPanEffect();

	public: // from MShwEffect

		/// @ref MShwEffect::CloneLC

		MShwEffect* CloneLC();

		/// @ref MShwEffect::InitializeL

		void InitializeL( 

    		CAlfEnv* aAlfEnv, MGlxVisualList* aVisualList,

		    MGlxMediaList* aMediaList, TSize aScreenSize );

		/// @ref MShwEffect::PrepareViewL

		TSize PrepareViewL( CAlfVisual* aVisual, TSize aImageSize );

		/// @ref MShwEffect::EnterViewL

		MGlxLayout* EnterViewL( 

			CAlfVisual* aVisual, TInt aDuration, TInt aFadeInDuration );

		/// @ref MShwEffect::ExitView

		void ExitView( CAlfVisual* aVisual );

		/// @ref MShwEffect::EnterTransitionL

		MGlxLayout* EnterTransitionL( CAlfVisual* aVisual, TInt aDuration );

		/// @ref MShwEffect::ExitTransition

		void ExitTransition( CAlfVisual* aVisual );

		/// @ref MShwEffect::PauseL

		void PauseL();

		/// @ref MShwEffect::Resume

		void Resume();

        /// @ref MShwEffect:EffectInfo

        TShwEffectInfo EffectInfo();

	private: // Data

		/// Own: the implementation class

		class CShwZoomAndPanEffectImpl;

		CShwZoomAndPanEffectImpl* iImpl;

	};

#endif // __SHWZOOMANDPANEFFECT_H__