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 ACTIVITYGRAPHICFILESSCALING_H

    18 #define ACTIVITYGRAPHICFILESSCALING_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 CGraphicsSalingHandler : 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     ~CGraphicsSalingHandler();

    58 

    59     static CGraphicsSalingHandler* NewL(MImageReadyCallBack &aNotify, RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType, const TSize &aNewSize, TKindOfScaling aKindOfScaling);

    60     static CGraphicsSalingHandler* NewLC(MImageReadyCallBack &aNotify, RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType, const TSize &aNewSize, TKindOfScaling aKindOfScaling);

    61 

    62 protected:

    63     void DoCancel();

    64     void RunL();

    65     TInt RunError(TInt);

    66 

    67 private:

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

    69     CGraphicsSalingHandler(MImageReadyCallBack &aNotify, const TSize &aNewSize, TKindOfScaling aKindOfScaling);

    70     TSize Scaling();

    71 

    72 private:

    73     MImageReadyCallBack &mNotify;

    74     CImageDecoder *mImageDecoder;

    75     CFbsBitmap *mBitmapFromFile;

    76     CFbsBitmap *mBitmapOutput;

    77     CBitmapScaler *mBitmapScaler;

    78     TSize mNewSize;

    79     TBool mKindOfScaling;

    80 

    81     TCurrentOperation mCurrentOperation;

    82 };

    83 

    84 #endif // ACTIVITYGRAPHICFILESSCALING_H