1 /*

     2 * Copyright (c) 2006 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:  Base class for media readers.

    15 *

    16 */

    17 

    18 

    19 #ifndef BMMEDIAREADER_H

    20 #define BMMEDIAREADER_H

    21 

    22 #include <e32base.h>

    23 #include "BMMediaReaderInterface.h"

    24 

    25 class MBubbleMediaReaderObserver;

    26 

    27 /**

    28  *  Base class for media readers.

    29  *

    30  *  @lib BubbleManager

    31  *  @since S60 v3.2

    32  */

    33 class CBubbleMediaReader : public CBase,

    34                            public MBubbleMediaReader

    35     {

    36 public:    

    37     virtual ~CBubbleMediaReader();

    38 

    39     /**

    40      * Derived class should call this when image or new 

    41      * animation frame has been read to frame buffer.

    42      *

    43      * @since S60 v3.2

    44      */

    45     void HandleReadingComplete();

    46     

    47     /**

    48      * Derived class should call this in error situation.

    49      *

    50      * @since S60 v3.2

    51      * @param aError System wide error code.

    52      */

    53     void HandleReadingError( TInt aError );

    54     

    55     

    56 protected: // from MBubbleMediaReader

    57     

    58     virtual void StartReadingL( 

    59         const TSize& aTargetSize, 

    60         const TReal& aScaleFactor,

    61         const TRect& aClipRect, 

    62         MBubbleMediaReaderObserver* aObserver ) = 0;

    63 

    64     virtual TInt SetScaleAndClip(

    65         const TSize& aTargetSize,

    66         const TReal& aScaleFactor,

    67         const TRect& aClipRect ) = 0;        

    68     

    69     virtual void CancelReading() = 0;

    70     

    71     virtual const TSize SourceSize() const = 0;

    72     

    73     virtual TBool IsAnimation() const = 0;

    74     

    75     virtual const CFbsBitmap* FrameBuffer() const;

    76     

    77     virtual const CFbsBitmap* Mask() const;

    78     

    79     virtual void Play() = 0;

    80     

    81     virtual void Stop() = 0;

    82 

    83 public:

    84     CBubbleMediaReader();

    85 

    86 protected: // data

    87     // Not owned

    88     const CFbsBitmap* iFrameBuffer;

    89     // Not owned

    90     const CFbsBitmap* iMask;

    91     // Not owned

    92     MBubbleMediaReaderObserver* iObserver;

    93     };

    94 

    95 

    96 #endif // BMMEDIAREADER_H