1 /*

     2  * Copyright (c) 2009 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 :

    15  *

    16  */

    17 #ifndef TSGRAPHICFILESCALINGHANDLER_H

    18 #define TSGRAPHICFILESCALINGHANDLER_H

    19 

    20 #ifndef __E32SVR_H__

    21 #define __E32SVR_H__

    22 #endif

    23 

    24 

    25 #ifndef SYMBIAN_ENABLE_PUBLIC_PLATFORM_HEADER_SPLIT

    26 #define SYMBIAN_ENABLE_PUBLIC_PLATFORM_HEADER_SPLIT

    27 #endif

    28 

    29 #include <bitmaptransforms.h>

    30 

    31 class CImageDecoder;

    32 class CFbsBitmap;

    33 

    34 class MImageReadyCallBack

    35 {

    36 public:

    37     virtual void ImageReadyCallBack(TInt error, const CFbsBitmap *bitmap ) = 0;

    38 };

    39 

    40 class CTsGraphicFileScalingHandler : public CActive

    41 {

    42 public:

    43 

    44 enum TCurrentOperation{

    45         ENone = 0,

    46         EConvertBitmapFromFile = 1,

    47         EScale = 2

    48     };

    49 

    50 enum TKindOfScaling

    51 {

    52    EIgnoreAspectRatio = 0,

    53    EKeepAspectRatio = 1,

    54    EKeepAspectRatioByExpanding = 2,

    55 };

    56 

    57     IMPORT_C ~CTsGraphicFileScalingHandler();

    58 

    59     IMPORT_C static CTsGraphicFileScalingHandler* NewL(MImageReadyCallBack &aNotify,

    60         RFs &aFs,

    61         const TDesC &aFileName,

    62         const TDesC8& aMimeType,

    63         const TSize &aNewSize,

    64         TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

    65     IMPORT_C static CTsGraphicFileScalingHandler* NewLC(MImageReadyCallBack &aNotify,

    66         RFs &aFs,

    67         const TDesC &aFileName,

    68         const TDesC8& aMimeType,

    69         const TSize &aNewSize,

    70         TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

    71 

    72 protected:

    73     void DoCancel();

    74     void RunL();

    75     TInt RunError(TInt);

    76 

    77 private:

    78     void ConstructL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType);

    79     CTsGraphicFileScalingHandler(MImageReadyCallBack &aNotify,

    80         const TSize &aNewSize,

    81         TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio);

    82     TSize Scaling();

    83 

    84 private:

    85     MImageReadyCallBack &mNotify;

    86     CImageDecoder *mImageDecoder;

    87     CFbsBitmap *mBitmapFromFile;

    88     CFbsBitmap *mBitmapOutput;

    89     CBitmapScaler *mBitmapScaler;

    90     TSize mNewSize;

    91     TBool mKindOfScaling;

    92 

    93     TCurrentOperation mCurrentOperation;

    94 };

    95 

    96 #endif // TSGRAPHICFILESCALINGHANDLER_H