videofeeds/hgvodui/inc/vcxhgvodthumbnailmanager.h
changeset 0 96612d01cf9f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videofeeds/hgvodui/inc/vcxhgvodthumbnailmanager.h	Mon Jan 18 20:21:12 2010 +0200
@@ -0,0 +1,97 @@
+/*
+* 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 the License "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:    HG VOD class for handling thumbnail loading*
+*/
+
+
+
+
+#ifndef VCXHGVODTHUMBNAILMANAGER_H
+#define VCXHGVODTHUMBNAILMANAGER_H
+
+#include <coemain.h>
+
+#include "vcxnsimageconverterobserver.h"
+
+class CVcxNsImageConverter;
+class MVcxHgVodThumbnailObserver;
+class CVcxHgVodThumbnailRequest;
+
+// CLASS DECLARATION
+/**
+ *  Utility class for handling thumbnail loading
+ *
+ *  @lib vcxhgvodui.lib
+ *  @since S60 v5.0
+ */
+NONSHARABLE_CLASS( CVcxHgVodThumbnailManager ): public CBase,
+                                                public MVcxNsImageConverterObserver
+    {
+public:
+    
+    static CVcxHgVodThumbnailManager* NewL( RFs& aFsSession );
+    
+    static CVcxHgVodThumbnailManager* NewLC( RFs& aFsSession );
+
+    virtual ~CVcxHgVodThumbnailManager();
+    
+    /**
+     * Resets the thumbnail fetching buffer from all clients. Ok, as we should have
+     * only one client that actually matters (ie. displays thumbnails on screen).
+     */
+    void Reset();
+    
+    /**
+     * Adds a new thumbnail fetching request to buffer.
+     * 
+     * @param aObserver Observer which is notified when thumbnail is ready.
+     * @param aThumbnailPath Path to the thumbnail file.
+     * @param aRequestedSize Size of the needed thumbnail.
+     * @param aClientId Client specific unique id for the thumbnail.
+     */
+    void AddThumbnailRequestL( MVcxHgVodThumbnailObserver& aObserver,
+            const TDesC& aThumbnailPath, TSize aRequestedSize, TInt64 aClientId );
+
+    /**
+     * From MVcxNsImageConverterObserver
+     * Notify about completed image conversion.
+     *
+     * @param aError Error code.
+     * @param aIcon  Pointer to the created icon, ownership is transferred.
+     *               NULL if conversion failed with error.
+     */  
+    void ImageConversionCompletedL( TInt aError, CGulIcon* aIcon );        
+
+private:    
+    
+    CVcxHgVodThumbnailManager();
+
+    void ConstructL( RFs& aFsSession );
+    
+private: // data
+    
+    /**
+     * Converts the images to requested size.
+     * Own.
+     */
+    CVcxNsImageConverter* iImageConverter;
+    
+    /**
+     * Buffer for thumbnail requests. Owns items in array.
+     */
+    RPointerArray<CVcxHgVodThumbnailRequest> iRequestBuffer;
+    
+    };
+
+#endif // VCXHGVODTHUMBNAILMANAGER_H