/*

* Copyright (c) 2003 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: smilactiveinterface  declaration

*

*/

#ifndef SMILACTIVE_H

#define SMILACTIVE_H

//  INCLUDES

#include <e32base.h>

#include <smiltime.h>

// FORWARD DECLARATIONS

class CSmilObject;

class CSmilPresentation;

// CLASS DECLARATION

/**

 * This interface provides SMIL engine generated timing for components

 * outside SMIL engine. This allows accurate synchronization of external 

 * components to the SMIL engine clock. For example, this interface may

 * be used in media renderer to implement animation, for example 

 * animated GIFs. The interface is used inside the SMIL engine to 

 * provide timing for transition effects.

 * 

 * To use this interface, the using component inherits it and implements

 * ActivateL() method. By using MSmilMedia::AfterL() method the

 * component can request a delay of specific duration. ActivateL() is

 *  called when this duration has passed in SMIL presentation timeline.

 * In real time, this might take longer than the requested time, for example 

 * if the presentation is paused.

  */

class MSmilActive 

    {

protected:  

	/**

	* Called when the requested time has been reached. The current time, relative to the requesting media obect, is passed as parameter.

	*/

	virtual void ActivateL(const TSmilTime& aTime) = 0;

public:  

	CSmilObject* iSmilObject;

	friend class CSmilPresentation;

	};

#endif      // ?INCLUDE_H   

// End of File