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:  Utility class for asynchronously decoding the header thumbnail image

    15  *

    16 */

    17 

    18  

    19 #include "cvimpstdetailsimagedecoder.h"

    20 

    21 #include "cvimpstdetailsheadercontrol.h"

    22 

    23 #include <cbsbitmap.h>

    24 #include <imageconversion.h> 

    25 

    26 // ---------------------------------------------------------------------------

    27 // CVIMPSTDetailsImageDecoder::NewL

    28 // Two-phase construction

    29 // ---------------------------------------------------------------------------

    30 //

    31 CVIMPSTDetailsImageDecoder* CVIMPSTDetailsImageDecoder::NewL(CVIMPSTDetailsHeaderControl& aHeader, const TDesC8& aBitmapData)

    32     {

    33     CVIMPSTDetailsImageDecoder* self = new (ELeave) CVIMPSTDetailsImageDecoder(aHeader);

    34     CleanupStack::PushL(self);

    35     self->ConstructL(aBitmapData);

    36     CleanupStack::Pop(self);

    37     return self;

    38     }

    39 

    40 // ---------------------------------------------------------------------------

    41 // CVIMPSTDetailsImageDecoder::CVIMPSTDetailsImageDecoder

    42 // First phase (C++) constructor

    43 // ---------------------------------------------------------------------------

    44 //

    45 CVIMPSTDetailsImageDecoder::CVIMPSTDetailsImageDecoder(CVIMPSTDetailsHeaderControl& aHeader) : 

    46 	CActive( CActive::EPriorityStandard ), iHeader(aHeader)

    47     { 

    48     CActiveScheduler::Add(this); 

    49     }

    50 

    51 // ---------------------------------------------------------------------------

    52 // CVIMPSTDetailsImageDecoder::ConstructL

    53 // ConstructL, second phase constructor

    54 // ---------------------------------------------------------------------------

    55 //

    56 void CVIMPSTDetailsImageDecoder::ConstructL(const TDesC8& aBitmapData)

    57     {

    58     iBitmapData = aBitmapData.AllocL();

    59     User::LeaveIfError( iFs.Connect() );

    60     iImgDecoder = CImageDecoder::DataNewL( iFs, *iBitmapData );

    61     TFrameInfo info = iImgDecoder->FrameInfo();

    62     iBitmap = new ( ELeave ) CFbsBitmap;

    63     User::LeaveIfError( iBitmap->Create( info.iOverallSizeInPixels, info.iFrameDisplayMode ));

    64     }

    65 

    66 // ---------------------------------------------------------------------------

    67 // CVIMPSTDetailsImageDecoder::~CVIMPSTDetailsImageDecoder

    68 // ---------------------------------------------------------------------------

    69 //

    70 CVIMPSTDetailsImageDecoder::~CVIMPSTDetailsImageDecoder()

    71     {

    72     DoCancel();

    73     if (iImgDecoder)

    74         {

    75         delete iImgDecoder;

    76         iImgDecoder = NULL;

    77         }

    78     if (iBitmap)

    79         {

    80         delete iBitmap;

    81         iBitmap = NULL;

    82         }

    83     if (iBitmapData)

    84         {

    85         delete iBitmapData;

    86         iBitmapData = NULL;

    87         }

    88     iFs.Close();

    89     }

    90 

    91 // ---------------------------------------------------------------------------

    92 // CVIMPSTDetailsImageDecoder::Start

    93 // Starts the decoding process

    94 // ---------------------------------------------------------------------------

    95 //

    96 void CVIMPSTDetailsImageDecoder::Start()

    97     {

    98     iStatus = KRequestPending;

    99     iImgDecoder->Convert( &iStatus, *iBitmap );

   100     SetActive();

   101     }

   102 

   103 // ---------------------------------------------------------------------------

   104 // CVIMPSTDetailsImageDecoder::RunL

   105 // Called by the active object framework when the decoding (request) is

   106 // completed.

   107 // ---------------------------------------------------------------------------

   108 //

   109 void CVIMPSTDetailsImageDecoder::RunL() 

   110 	{

   111 	User::LeaveIfError( iStatus.Int() );

   112 	// Ownership of the bitmap is transferred

   113 	iHeader.SetBitmap(iBitmap, NULL );

   114 	iBitmap = NULL;

   115    }

   116 

   117 // ---------------------------------------------------------------------------

   118 // CVIMPSTDetailsImageDecoder::DoCancel

   119 // Called when the decoding (request) is cancelled for some reason.

   120 // ---------------------------------------------------------------------------

   121 //

   122 void CVIMPSTDetailsImageDecoder::DoCancel()

   123     { 

   124     iImgDecoder->Cancel(); 

   125     }

   126 

   127 // end of file