--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imagehandlinglib/Src/CIHLImageViewerExtJpg.h	Tue Jan 26 15:18:05 2010 +0200
@@ -0,0 +1,332 @@
+/*
+* Copyright (c) 2006 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:  Implementation of Image Viewer class.
+*
+*/
+
+
+#ifndef CIHLIMAGEVIEWEREXTJPG_H
+#define CIHLIMAGEVIEWEREXTJPG_H
+
+// INCLUDES
+#include "MIHLImageViewer.h"
+#include <e32base.h>
+
+//FORWARD DECLARATIONS
+class MIHLFileImageExtJpg;
+class MIHLBitmap;
+class MIHLViewerObserver;
+class CIHLBitmap;
+class CIHLBitmapProcessor;
+
+// CLASS DECLARATION
+/**
+*  CIHLImageViewer
+*
+*  Image Viewer implementation class.
+*  @lib IHL.lib
+*  @since 3.0
+*/
+NONSHARABLE_CLASS( CIHLImageViewerExtJpg ) : public CTimer, public MIHLImageViewer
+    {
+    public:  // Constructors and destructor
+
+        /**
+        * Two-phased constructor.
+        */
+        static CIHLImageViewerExtJpg* NewL( const TSize& aViewerSize,
+									  MIHLFileImageExtJpg& aSource,
+									  MIHLBitmap& aDestination,
+									  MIHLViewerObserver& aObserver,
+									  const TUint32 aOptions );
+
+        /*
+        * Virtual destructor.
+        */
+        virtual ~CIHLImageViewerExtJpg();
+
+	public: // From base class MIHLViewer
+		
+		  /*
+        * From MIHLViewer, see base class header.
+        */
+		TIHLInterfaceType Type() const;
+		
+	public:
+	
+		/*
+        * From MIHLImageViewer, see base class header.
+        */
+		TBool IsAnimation() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		void Play();
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		void Stop();
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TBool IsPlaying() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt AnimationFrameCount() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt AnimationFrame() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetAnimationFrame( TInt aFrameIndex );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetViewerSize( const TSize& aViewerSize, TInt srcBitmapScaleFactor = 1 );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TSize ViewerSize() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt MoveSourceRect( TInt aDx, TInt aDy );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetSourceRectPosition( const TPoint& aPosition );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TRect SourceRect() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TSize SourceSize() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetZoomRatio( TReal aZoomRatio );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TReal ZoomRatio() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TReal ZoomToFitRatio() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt RotateClockwise();
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt RotateCounterClockwise();
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetRotationAngle( TInt aRotationAngle );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt RotationAngle() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetVerticalMirroring( TBool aValue );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TBool VerticalMirroring() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TInt SetHorizontalMirroring( TBool aValue );
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		TBool HorizontalMirroring() const;
+
+        /*
+        * From MIHLImageViewer, see base class header.
+        */
+		void SetFilter( MIHLFilter* aFilter );
+
+	public: 
+
+      
+
+	public: // From base class CTimer
+		
+		/*
+        * From CTimer, see base class header.
+        */
+		void DoCancel();
+
+        /*
+        * From CTimer, see base class header.
+        */
+		void RunL();
+
+        /*
+        * From CTimer, see base class header.
+        */
+		TInt RunError( TInt aError );
+      
+
+	private: // Private methods
+
+        /*
+        * Start asynchronous processing with new settings.
+        * This is needed always when settings are changed.
+        */
+		TInt ApplySettings();
+
+        /*
+        * Start load process source bitmap.
+        */
+		TInt AsyncLoad();
+
+        /*
+        * Finish processing and notify client.
+        */
+		TInt Finish();
+
+        /*
+        * Complete dummy request. This causes RunL() method to be called.
+        * Needed by state machine.
+        */
+		void SelfComplete();
+
+        /*
+        * Calculate source bitmap rectangle needed by processor.
+        * Rectangle is affected by rotating and mirroring settings etc.
+        */
+		TRect CalculateProcessSourceRect( const TSize& aSourceCacheSize );
+
+        /*
+        * Calculate destination bitmap rectangle needed by processor.
+        * Rectangle is affected by rotating and mirroring settings etc.
+        */
+		TRect CalculateProcessDestinationRect();
+
+        /*
+        * Calculate needed zoomratio for "fit-to-screen" zooming.
+        */
+		void CalculateZoomToFitRatio();
+
+        /*
+        * Calculate source bitmap rectangle and destination bitmap size.
+        * These values needs to be recalculated when rectangle setting is changed.
+        */
+		void CalculateSourceRectAndDestinationSize();
+
+        /*
+        * Assert if source bitmap rectangle and destination bitmpa size are valid.
+        * This method is called by CalculateSourceRectAndDestinationSize()
+        */
+#ifdef _DEBUG
+		void AssertSourceRectAndDestinationSize();
+#endif
+
+	private: // Private constructors
+
+        void ConstructL();
+        CIHLImageViewerExtJpg( const TSize& aViewerSize,
+						 MIHLFileImageExtJpg& aSource,
+						 MIHLBitmap& aDestination,
+						 MIHLViewerObserver& aObserver,
+						 const TUint32 aOptions );
+
+	private: // Private data types
+
+		enum TViewerState
+			{
+			EInactive,
+			ELoad,
+			EProcess
+			};
+
+	private: // Data
+
+		// Viewer state
+		TViewerState iViewerState;
+
+		// Ref: Observers
+		MIHLViewerObserver& iObserver;
+
+		// Ref: Viewer source image
+		MIHLFileImageExtJpg& iSource;
+		TSize iSourceSize;
+		TRect iSourceRect;
+
+		// Ref: Viewer destination bitmap
+		MIHLBitmap& iDestination;
+		TSize iDestinationSize;
+
+		// Viewing settings
+		const TUint32 iOptions;
+		TSize iViewerSize;
+		TReal iZoomRatio;
+		TReal iZoomToFitRatio;
+		TInt iRotationAngle;
+		TBool iVerticalMirroring;
+		TBool iHorizontalMirroring;
+
+		// Decoder capabilities
+		TInt iCapabilities;
+		
+		// Internal processor flag
+		TBool iInternalProcessingNeeded;
+	
+		// Own: Bitmap caches
+		CIHLBitmap* iCacheSource;
+		CIHLBitmap* iCacheDestination;
+		// Own: Bitmap processor
+		CIHLBitmapProcessor* iProcessor;
+		// src bitmap scale factor
+		TInt iSrcBitmapScaleFactor;
+
+    };
+
+#endif // CIHLIMAGEVIEWEREXTJPG_H
+
+// End of File