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/*
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* Copyright (c) 2008-2009 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 : Class header for preview thumbnail in list view
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*
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*/
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#ifndef _GLXPREVIEWTHUMBNAILBINDING_H_
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#define _GLXPREVIEWTHUMBNAILBINDING_H_
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#include "glxbinding.h" // The binding is created by the binding set factory.
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#include "glxmedialistiterator.h" // Interface for going through items in the list in a non-sequential order
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#include "mglxmedialistobserver.h" // Observes for changes in media list
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#include <memory>
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class GlxThumbnailVariantType;
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class CGlxThumbnailContext; // Fetch context to retrieve thumbnails
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/**
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* Observer interface
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*/
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class MPreviewTNObserver
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{
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public:
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virtual void PreviewTNReadyL(CFbsBitmap* aBitmap, CFbsBitmap* aMask) = 0;
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};
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// CLASS DECLARATION
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/**
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* Implementation of preview thumbnail binding for the
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* list view.
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*
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*/
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NONSHARABLE_CLASS(CGlxPreviewThumbnailBinding) : public CBase,
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public MGlxMediaListObserver
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{
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public:
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/**
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* Two phase construction
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* @param aMulTag Mul field that the binding corresponds to
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*/
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static CGlxPreviewThumbnailBinding* NewL (MPreviewTNObserver& aObserver);
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/**
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* Two phase construction
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*/
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static CGlxPreviewThumbnailBinding* NewLC(MPreviewTNObserver& aObserver ); // takes ownership
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/**
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* Destructor
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*/
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~CGlxPreviewThumbnailBinding();
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private:
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/**
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* Constructor
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*/
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CGlxPreviewThumbnailBinding(MPreviewTNObserver& aObserver);
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/**
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* Two phase construction
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*/
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void ConstructL();
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public:
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/**
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* Scale the source bitmap to list size
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* aSrcBitmap - Source bitmap
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* aDestBitmap - Scaled destination bitmap
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*/
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void ScaleBitmapToListSizeL(CFbsBitmap* aSrcBitmap, CFbsBitmap* aDestBitmap);
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void HandleItemChangedL(const CMPXCollectionPath& aPath,
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TBool aIsRefreshNeeded, TBool aBackwardNavigation);
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void StartTimer();
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void StopTimer();
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// From MGlxMediaListObserver
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void HandleItemAddedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );
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void HandleItemRemovedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );
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void HandleAttributesAvailableL( TInt aItemIndex,
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const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList );
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void HandleFocusChangedL( NGlxListDefs::TFocusChangeType aType,
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TInt aNewIndex, TInt aOldIndex, MGlxMediaList* aList );
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void HandleItemSelectedL(TInt aIndex, TBool aSelected, MGlxMediaList* aList );
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void HandleMessageL( const CMPXMessage& aMessage, MGlxMediaList* aList );
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void HandleError( TInt aError );
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void HandleCommandCompleteL( CMPXCommand* aCommandResult, TInt aError,
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MGlxMediaList* aList );
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void HandleMediaL( TInt aListIndex, MGlxMediaList* aList );
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void HandleItemModifiedL( const RArray<TInt>& aItemIndexes, MGlxMediaList* aList );
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void HandlePopulatedL( MGlxMediaList* aList );
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private:
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/**
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* IsTimeL
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*/
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static TInt IsTimeL( TAny* aSelf );
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/**
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* TimerTickedL
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*/
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void TimerTickedL();
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private:
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MPreviewTNObserver& iObserver;
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// Timer that checks for the time expiration
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CPeriodic* iTimer;
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//Medialist that holds the thumbnail information
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MGlxMediaList* iMediaList;
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// Thumbnail Attrib context
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CGlxAttributeContext* iThumbnailContext;
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// for thumbnail context
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TGlxSequentialIterator iThumbnailIterator;
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// flag that says whether timer has expired
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TBool iTimerTicked;
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TBool iIsRefreshNeeded;
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TSize iGridIconSize;
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// Holds the numbers of trials count,after which PreviewTNReady callback
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// has to be called
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TInt iTrialCount;
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CMPXFilter* iPreviewFilter;
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};
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#endif //_GLXPREVIEWTHUMBNAILBINDING_H_
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