--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/views/listview/inc/glxpreviewthumbnailbinding.h Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,155 @@
+/*
+* Copyright (c) 2008-2009 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 : Class header for preview thumbnail in list view
+*
+*/
+
+
+#ifndef _GLXPREVIEWTHUMBNAILBINDING_H_
+#define _GLXPREVIEWTHUMBNAILBINDING_H_
+
+
+#include "glxbinding.h" // The binding is created by the binding set factory.
+#include "glxmedialistiterator.h" // Interface for going through items in the list in a non-sequential order
+#include "mglxmedialistobserver.h" // Observes for changes in media list
+#include <memory>
+
+
+class GlxThumbnailVariantType;
+class CGlxThumbnailContext; // Fetch context to retrieve thumbnails
+
+/**
+ * Observer interface
+ */
+class MPreviewTNObserver
+ {
+public:
+ virtual void PreviewTNReadyL(CFbsBitmap* aBitmap, CFbsBitmap* aMask, TInt aIndex) = 0;
+ };
+
+// CLASS DECLARATION
+/**
+ * Implementation of preview thumbnail binding for the
+ * list view.
+ *
+ */
+
+ NONSHARABLE_CLASS(CGlxPreviewThumbnailBinding) : public CBase,
+ public MGlxMediaListObserver
+ {
+ public:
+
+ /**
+ * Two phase construction
+ * @param aMulTag Mul field that the binding corresponds to
+ */
+ static CGlxPreviewThumbnailBinding* NewL (MPreviewTNObserver& aObserver);
+
+ /**
+ * Two phase construction
+ */
+ static CGlxPreviewThumbnailBinding* NewLC(MPreviewTNObserver& aObserver ); // takes ownership
+
+
+ /**
+ * Destructor
+ */
+ ~CGlxPreviewThumbnailBinding();
+
+ /**
+ * HasFirstThumbnail
+ */
+ TBool HasFirstThumbnail( const RArray< TMPXAttribute >& aAttributes );
+
+private:
+
+ /**
+ * Constructor
+ */
+ CGlxPreviewThumbnailBinding(MPreviewTNObserver& aObserver);
+
+ /**
+ * Two phase construction
+ */
+ void ConstructL();
+
+public:
+ void HandleItemChangedL(const CMPXCollectionPath& aPath, TBool aPopulateListTNs);
+ void StartTimer(TBool aPopulateListTNs);
+
+ // From MGlxMediaListObserver
+ void HandleItemAddedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );
+ void HandleItemRemovedL( TInt aStartIndex, TInt aEndIndex, MGlxMediaList* aList );
+ void HandleAttributesAvailableL( TInt aItemIndex,
+ const RArray<TMPXAttribute>& aAttributes, MGlxMediaList* aList );
+ void HandleFocusChangedL( NGlxListDefs::TFocusChangeType aType,
+ TInt aNewIndex, TInt aOldIndex, MGlxMediaList* aList );
+ void HandleItemSelectedL(TInt aIndex, TBool aSelected, MGlxMediaList* aList );
+ void HandleMessageL( const CMPXMessage& aMessage, MGlxMediaList* aList );
+ void HandleError( TInt aError );
+ void HandleCommandCompleteL( CMPXCommand* aCommandResult, TInt aError,
+ MGlxMediaList* aList );
+ void HandleMediaL( TInt aListIndex, MGlxMediaList* aList );
+ void HandleItemModifiedL( const RArray<TInt>& aItemIndexes, MGlxMediaList* aList );
+
+private:
+ /**
+ * IsTimeL
+ */
+ static TInt IsTimeL( TAny* aSelf );
+
+ /**
+ * TimerTickedL
+ */
+ void TimerTickedL();
+
+private:
+ MPreviewTNObserver& iObserver;
+
+ // Timer that checks for the time expiration
+ CPeriodic* iTimer;
+
+ //Medialist that holds the thumbnail information
+ MGlxMediaList* iMediaList;
+
+ // Thumbnail context
+ CGlxThumbnailContext* iThumbnailContext;
+
+ // for thumbnail context
+ TGlxSequentialIterator iThumbnailIterator;
+
+ // Preview thumbnail index
+ TInt iProgressIndex;
+
+ // flag that says whether timer has expired
+ TBool iTimerTicked;
+
+ //flag will be true, when initially the first thumbnails for all the
+ //items in the list are populated.
+ TBool iPopulateListTNs;
+
+ //it holds the initial number of thumbnail to be displayed
+ RArray<TInt> iPreviewItemCount;
+
+ TSize iGridIconSize;
+
+ // Holds the numbers of trials count,after which PreviewTNReady callback
+ // has to be called
+ TInt iTrialCount;
+
+ TInt iTrial;
+};
+
+
+#endif //_GLXPREVIEWTHUMBNAILBINDING_H_