1 /*

     2 * Copyright (c) 2008 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:  Image decoder

    15 *

    16 */

    17 

    18 

    19 #ifndef _XNIMAGEDECODER_H

    20 #define _XNIMAGEDECODER_H

    21 

    22 // System includes

    23 #include <e32base.h>

    24 

    25 // User includes

    26 class CXnBitmapAdapter;

    27 class CFbsBitmap;

    28 class CImageDecoder;

    29 class RFs;

    30 

    31 // Forward declarations

    32 

    33 /**

    34  * Image decoder

    35  * 

    36  * @ingroup group_xnbitmapfactory

    37  * @lib xn3bitmapfactory.lib

    38  * @since S60 5.2

    39  */

    40 NONSHARABLE_CLASS( CXnImageDecoder ) : public CActive

    41     {

    42 public:    

    43     // Constructors and destructor

    44     

    45     /**

    46      * Two-phased constructor.

    47      */

    48     static CXnImageDecoder* NewL( CXnBitmapAdapter& aAdapter, RFs& aFs );        

    49 

    50     /**

    51      * Two-phased constructor. Leaving on stack

    52      */

    53     static CXnImageDecoder* NewLC( CXnBitmapAdapter& aAdapter, RFs& aFs );         

    54 

    55     /**

    56      * Destructor

    57      */

    58     ~CXnImageDecoder();

    59 

    60 private:

    61     // private constructors

    62 

    63     /**

    64      * Leaving constructor

    65      */

    66     void ConstructL();

    67     

    68     /**

    69      * C++ default constructor

    70      */

    71     CXnImageDecoder( CXnBitmapAdapter& aAdapter, RFs& aFs );         

    72         

    73 private:

    74     // from CActive

    75     

    76     /**

    77      * @see CActive

    78      */

    79     void RunL();

    80 

    81     /**

    82      * @see CActive

    83      */    

    84     TInt RunError( TInt aError );

    85     

    86     /**

    87      * @see CActive

    88      */    

    89     void DoCancel();

    90     

    91 public: 

    92     // new functions

    93     

    94     /**

    95      * Starts decode.

    96      * 

    97      * @param aFile Image file

    98      */

    99     void DecodeL( TFileName& aFilename );

   100             

   101 private:

   102     // new functions

   103     

   104     void Cleanup();

   105     

   106 private:

   107     // data

   108 

   109     /** Bitmapadapter, not owned */

   110     CXnBitmapAdapter& iAdapter; 

   111     /** File server session, not owned */

   112     RFs& iFs;

   113     /** Image decoder, owned */

   114     CImageDecoder* iDecoder;

   115     /** Bitmap, owned during conversion */

   116     CFbsBitmap* iBitmap;

   117     /** Mask, owned during conversion */

   118     CFbsBitmap* iMask;    

   119     };

   120 

   121 #endif // _XNIMAGEDECODER_H

   122 

   123 // End of file