/*

* 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 __GIFANIMATOR_H__

#define __GIFANIMATOR_H__

#include <e32std.h>

#include <e32base.h>

#include "SGModel.h"

#include "SGStd.h"

class CImageEncoder;

class CSavingProgressDialog;

class CAknGlobalProgressDialog;

class MDialogCallback

    {

public:

    virtual void DialogDismissedL( TInt aButtonId ) = 0;

    };

class CGifAnimator : public CActive, public MDialogCallback

	{

public:

	static int CreateGifAnimation(const TDesC& aFileName, TSize aDimensions, CVideoFrameArray* aVideoFrameArray);

	~CGifAnimator();

private:

    CGifAnimator();

    void StartL(const TDesC& aFileName, const TSize& aDimensions, CVideoFrameArray* aVideoFrameArray);

    void WriteHeaderL(const TSize& aDimensions);

    void WriteGraphicControlL(const TVideoFrame& aFrame);

    void WriteImageDescriptorL(const TVideoFrame& aFrame);

    CFbsBitmap* GetBitmapLC(TVideoFrame& aFrame, const TSize& aDimensions);

    void WriteRasterDataL(CFbsBitmap* aBitmap);

    void WriteFooterL();

    void FinishL();

    void WriteInt8L(TInt aValue);

    void WriteInt16L(TInt aValue);

    void RunL();

	void DoCancel();

	void DialogDismissedL(TInt aButtonId); // from MDialogCallback

private:

    RFs                         iFs;

    RFile                       iOutFile;

	CImageEncoder*              iImageEncoder;

	HBufC8*                     iGIFImageData;

	CActiveSchedulerWait        iWait;

    CSavingProgressDialog*      iSavingProgressDialog;

    };

class CSavingProgressDialog : public CActive

    {

public:

    static CSavingProgressDialog* NewL(MDialogCallback* aDialogCallback);

    ~CSavingProgressDialog();

    void StartDisplayingL(const TDesC &aText, TInt aFinalValue);

    void IncreaseProgressValueWithOne();

    void ProcessFinished();

private:

    void DoCancel();

    void RunL();

private: 

    CSavingProgressDialog();

    void ConstructL(MDialogCallback* aDialogCallback);

private:

    MDialogCallback*            iDialogCallback;

    CAknGlobalProgressDialog*   iGlobalProgressDialog;

    TBool                       iVisible;

    TInt                        iCurrentValue;

    TInt                        iFinalValue;

    };

#endif // __GIFANIMATOR_H__