--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utils/tsimageutils/inc/tsgraphicfilescalinghandler.h	Mon Sep 13 13:26:33 2010 +0300
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * This component and the accompanying materials are made available
+ * under the terms of "Eclipse Public License v1.0"
+ * which accompanies this distribution, and is available
+ * at the URL "http://www.eclipse.org/legal/epl-v10.html".
+ *
+ * Initial Contributors:
+ * Nokia Corporation - initial contribution.
+ *
+ * Contributors:
+ *
+ * Description :
+ *
+ */
+#ifndef TSGRAPHICFILESCALINGHANDLER_H
+#define TSGRAPHICFILESCALINGHANDLER_H
+
+#include <e32base.h>
+
+class RFs;
+class CImageDecoder;
+class CFbsBitmap;
+class CBitmapRotator;
+class CBitmapScaler;
+
+/**
+ * Interface to observer contain
+ * ImageReadyCallBack function return error code and scaled/resized bitmap.
+ */
+class MImageReadyCallBack
+    {
+public:
+    virtual void ImageReadyCallBack( TInt aError, const CFbsBitmap* aBitmap ) = 0;
+    };
+
+/**
+ * Class to scaling graphic file/s.
+ */
+class CTsGraphicFileScalingHandler : public CActive
+    {
+public:
+    /**
+     * Kind of graphic file scaling.
+     * EIgnoreAspectRatio          - the file is scaled to size, aspect ratio isn't preserving.
+     * EKeepAspectRatio            - the file is scaled to a rectangle as large as possible inside size
+     *                               preserving the aspect ratio.
+     * EKeepAspectRatioByExpanding - the file is scaled to a rectangle as small as possible outside size
+     *                               preserving the aspect ratio.
+     */
+    enum TKindOfScaling
+        {
+        EIgnoreAspectRatio = 0,
+        EKeepAspectRatio = 1,
+        EKeepAspectRatioByExpanding = 2,
+        };
+
+private:
+    /**
+     * Active object current operation.
+     */
+    enum TCurrentOperation{
+        ENone = 0,
+        EConvertBitmapFromFile,
+        ERotate,
+        EScale
+    };
+
+public:
+    ~CTsGraphicFileScalingHandler();
+
+    static CTsGraphicFileScalingHandler* NewL(MImageReadyCallBack &aNotify,
+        RFs &aFs,
+        const TDesC &aFileName,
+        const TDesC8& aMimeType,
+        const TSize &aNewSize,
+        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio,
+        TInt aRotation = 0);
+    
+    static CTsGraphicFileScalingHandler* NewLC(MImageReadyCallBack &aNotify,
+        RFs &aFs,
+        const TDesC &aFileName,
+        const TDesC8& aMimeType,
+        const TSize &aNewSize,
+        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio,
+        TInt aRotation = 0);
+
+    
+    static CTsGraphicFileScalingHandler* NewL(MImageReadyCallBack &aNotify,
+        const CFbsBitmap &aInputFbsBitmap,
+        const TSize &aNewSize,
+        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio,
+        TInt aRotation = 0);
+     static CTsGraphicFileScalingHandler* NewLC(MImageReadyCallBack &aNotify,
+        const CFbsBitmap &aInputFbsBitmap,
+        const TSize &aNewSize,
+        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio,
+        TInt aRotation = 0);
+
+protected:
+    void DoCancel();
+    void RunL();
+    TInt RunError(TInt);
+
+private:
+    void ConstructL( RFs& aFs, const TDesC& aFileName, const TDesC8& aMimeType );
+    void ConstructL( const CFbsBitmap& aInputFbsBitmap );
+    CTsGraphicFileScalingHandler( MImageReadyCallBack& aNotify,
+                                  const TSize& aNewSize,
+        TKindOfScaling aKindOfScaling = CTsGraphicFileScalingHandler::EIgnoreAspectRatio,
+        TInt aRotation = 0);
+    void DecodingOperationL( RFs& aFs, const TDesC& aFileName, const TDesC8& aMimeType );
+
+    void ScalingOperationL();
+
+    void RotationOperationL();
+    
+    TInt RotationMode()const;
+    
+    TBool IsSupportedRotationMode() const;
+    
+    TSize NewSizeToScalingOperation();
+
+    void FixForDisplayModeNotSupportedByScalingOperation();
+
+private:
+    /**
+     * Reference to observer implementation - return error code and output bitmap.
+     */
+    MImageReadyCallBack& iNotify;
+    /**
+     * Pointer to decoder used by decoding graphic file algorithm.
+     */
+    CImageDecoder* iImageDecoder;
+    /**
+     * Pointer to input bitmap - before decoding/scaling operation/s.
+     */
+    CFbsBitmap* iInputBitmap;
+    /**
+     * Pointer to output bitmap - returned in mNotify object.
+     */
+    CFbsBitmap* iOutputBitmap;
+    /**
+     * Pointer to CBitmapScaler calss used by scaling graphic file algorithm.
+     */
+    CBitmapScaler* iBitmapScaler;
+    
+    CBitmapRotator* iBitmapRotator;
+    /**
+     * New size of output graphic file.
+     */
+    TSize iNewSize;
+    /**
+     * Kind of graphic file scaling described above.
+     */
+    TBool iKindOfScaling;
+    
+    const TInt iRotation;
+    /**
+     * Active object current operation.
+     */
+    TCurrentOperation iCurrentOperation;
+    };
+
+#endif // TSGRAPHICFILESCALINGHANDLER_H