imagehandlinglib/Src/CIHLImageViewerExtJpg.h
author Sebastian Brannstrom <sebastianb@symbian.org>
Tue, 15 Jun 2010 14:30:57 +0100
branchGCC_SURGE
changeset 26 ea43e3e86079
parent 0 2014ca87e772
permissions -rw-r--r--
Bug 2949 - GCC compilation issue fixes - empty uninitialized const struct
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Implementation of Image Viewer class.
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*
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*/
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#ifndef CIHLIMAGEVIEWEREXTJPG_H
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#define CIHLIMAGEVIEWEREXTJPG_H
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// INCLUDES
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#include "MIHLImageViewer.h"
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#include <e32base.h>
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//FORWARD DECLARATIONS
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class MIHLFileImageExtJpg;
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class MIHLBitmap;
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class MIHLViewerObserver;
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class CIHLBitmap;
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class CIHLBitmapProcessor;
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// CLASS DECLARATION
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/**
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*  CIHLImageViewer
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*
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*  Image Viewer implementation class.
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*  @lib IHL.lib
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*  @since 3.0
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*/
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NONSHARABLE_CLASS( CIHLImageViewerExtJpg ) : public CTimer, public MIHLImageViewer
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    {
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        */
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        static CIHLImageViewerExtJpg* NewL( const TSize& aViewerSize,
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									  MIHLFileImageExtJpg& aSource,
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									  MIHLBitmap& aDestination,
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									  MIHLViewerObserver& aObserver,
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									  const TUint32 aOptions );
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        /*
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        * Virtual destructor.
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        */
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        virtual ~CIHLImageViewerExtJpg();
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	public: // From base class MIHLViewer
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		  /*
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        * From MIHLViewer, see base class header.
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        */
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		TIHLInterfaceType Type() const;
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	public:
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		/*
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        * From MIHLImageViewer, see base class header.
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        */
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		TBool IsAnimation() const;
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		void Play();
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		void Stop();
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TBool IsPlaying() const;
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt AnimationFrameCount() const;
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt AnimationFrame() const;
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt SetAnimationFrame( TInt aFrameIndex );
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt SetViewerSize( const TSize& aViewerSize, TInt srcBitmapScaleFactor = 1 );
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TSize ViewerSize() const;
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt MoveSourceRect( TInt aDx, TInt aDy );
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        /*
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        * From MIHLImageViewer, see base class header.
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        */
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		TInt SetSourceRectPosition( const TPoint& aPosition );
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parents:
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   122
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parents:
diff changeset
   123
        /*
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parents:
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   124
        * From MIHLImageViewer, see base class header.
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parents:
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   125
        */
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parents:
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		TRect SourceRect() const;
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parents:
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   127
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parents:
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   128
        /*
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parents:
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   129
        * From MIHLImageViewer, see base class header.
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parents:
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        */
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		TSize SourceSize() const;
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parents:
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   132
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parents:
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   133
        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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parents:
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        */
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		TInt SetZoomRatio( TReal aZoomRatio );
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parents:
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   137
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parents:
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        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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parents:
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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		TReal ZoomRatio() const;
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parents:
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   143
        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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		TReal ZoomToFitRatio() const;
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parents:
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   147
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parents:
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        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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		TInt RotateClockwise();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt RotateCounterClockwise();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   157
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   158
        /*
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parents:
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   159
        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   160
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt SetRotationAngle( TInt aRotationAngle );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   162
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        /*
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parents:
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   164
        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   165
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt RotationAngle() const;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   167
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parents:
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        /*
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parents:
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   169
        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt SetVerticalMirroring( TBool aValue );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TBool VerticalMirroring() const;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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parents:
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        /*
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parents:
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        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt SetHorizontalMirroring( TBool aValue );
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   182
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parents:
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   183
        /*
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parents:
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   184
        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   185
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   186
		TBool HorizontalMirroring() const;
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   187
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   188
        /*
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parents:
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   189
        * From MIHLImageViewer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   191
		void SetFilter( MIHLFilter* aFilter );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   192
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   193
	public: 
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   194
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   195
      
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parents:
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   196
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   197
	public: // From base class CTimer
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   198
		
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   199
		/*
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   200
        * From CTimer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   201
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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		void DoCancel();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   203
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   204
        /*
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   205
        * From CTimer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   206
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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		void RunL();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   208
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   209
        /*
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parents:
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   210
        * From CTimer, see base class header.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   211
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   212
		TInt RunError( TInt aError );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   213
      
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parents:
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   214
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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	private: // Private methods
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   216
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   217
        /*
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   218
        * Start asynchronous processing with new settings.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   219
        * This is needed always when settings are changed.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   220
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   221
		TInt ApplySettings();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   222
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   223
        /*
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   224
        * Start load process source bitmap.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   225
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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		TInt AsyncLoad();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   227
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   228
        /*
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   229
        * Finish processing and notify client.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   230
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   231
		TInt Finish();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   232
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   233
        /*
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   234
        * Complete dummy request. This causes RunL() method to be called.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   235
        * Needed by state machine.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   236
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   237
		void SelfComplete();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   238
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   239
        /*
2014ca87e772 Revision: 201004
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   240
        * Calculate source bitmap rectangle needed by processor.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   241
        * Rectangle is affected by rotating and mirroring settings etc.
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   242
        */
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   243
		TRect CalculateProcessSourceRect( const TSize& aSourceCacheSize );
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   244
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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        /*
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        * Calculate destination bitmap rectangle needed by processor.
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        * Rectangle is affected by rotating and mirroring settings etc.
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        */
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		TRect CalculateProcessDestinationRect();
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        /*
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        * Calculate needed zoomratio for "fit-to-screen" zooming.
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        */
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		void CalculateZoomToFitRatio();
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        /*
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        * Calculate source bitmap rectangle and destination bitmap size.
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        * These values needs to be recalculated when rectangle setting is changed.
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        */
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		void CalculateSourceRectAndDestinationSize();
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        /*
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        * Assert if source bitmap rectangle and destination bitmpa size are valid.
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        * This method is called by CalculateSourceRectAndDestinationSize()
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        */
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#ifdef _DEBUG
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		void AssertSourceRectAndDestinationSize();
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#endif
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	private: // Private constructors
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        void ConstructL();
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        CIHLImageViewerExtJpg( const TSize& aViewerSize,
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						 MIHLFileImageExtJpg& aSource,
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						 MIHLBitmap& aDestination,
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						 MIHLViewerObserver& aObserver,
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						 const TUint32 aOptions );
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	private: // Private data types
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		enum TViewerState
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			{
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			EInactive,
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			ELoad,
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			EProcess
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			};
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	private: // Data
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		// Viewer state
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		TViewerState iViewerState;
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		// Ref: Observers
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		MIHLViewerObserver& iObserver;
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		// Ref: Viewer source image
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		MIHLFileImageExtJpg& iSource;
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		TSize iSourceSize;
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		TRect iSourceRect;
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		// Ref: Viewer destination bitmap
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		MIHLBitmap& iDestination;
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		TSize iDestinationSize;
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		// Viewing settings
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		const TUint32 iOptions;
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		TSize iViewerSize;
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		TReal iZoomRatio;
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		TReal iZoomToFitRatio;
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		TInt iRotationAngle;
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		TBool iVerticalMirroring;
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		TBool iHorizontalMirroring;
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		// Decoder capabilities
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		TInt iCapabilities;
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		// Internal processor flag
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		TBool iInternalProcessingNeeded;
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		// Own: Bitmap caches
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		CIHLBitmap* iCacheSource;
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		CIHLBitmap* iCacheDestination;
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		// Own: Bitmap processor
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		CIHLBitmapProcessor* iProcessor;
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		// src bitmap scale factor
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		TInt iSrcBitmapScaleFactor;
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    };
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#endif // CIHLIMAGEVIEWEREXTJPG_H
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// End of File