1 /*

     2 * Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: smilactiveinterface  declaration

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef SMILACTIVE_H

    21 #define SMILACTIVE_H

    22 

    23 //  INCLUDES

    24 #include <e32base.h>

    25 

    26 #include <smiltime.h>

    27 

    28 // FORWARD DECLARATIONS

    29 class CSmilObject;

    30 class CSmilPresentation;

    31 

    32 // CLASS DECLARATION

    33 /**

    34  * This interface provides SMIL engine generated timing for components

    35  * outside SMIL engine. This allows accurate synchronization of external 

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

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

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

    39  * provide timing for transition effects.

    40  * 

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

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

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

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

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

    46  * if the presentation is paused.

    47   */

    48 class MSmilActive 

    49     {

    50 protected:  

    51 

    52 	/**

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

    54 	*/

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

    56 

    57 public:  

    58 

    59 	CSmilObject* iSmilObject;

    60 	friend class CSmilPresentation;

    61 	};

    62 

    63 #endif      // ?INCLUDE_H   

    64             

    65 // End of File