author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:28:59 +0200 | |
changeset 23 | 74c9f037fd5d |
permissions | -rw-r--r-- |
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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: Thumbnail storage implementation |
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* |
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*/ |
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/** |
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* @internal reviewed 30/07/2007 by Simon Brooks |
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*/ |
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#ifndef GLXTNDATABASE_H |
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#define GLXTNDATABASE_H |
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// INCLUDES |
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#include <e32base.h> |
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#include <f32file.h> |
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#include "mglxtnstorage.h" |
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#include "mglxtnvolumedatabaseobserver.h" |
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// CONSTANTS |
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// MACROS |
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// DATA TYPES |
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// FUNCTION PROTOTYPES |
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// FORWARD DECLARATIONS |
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class CGlxtnVolumeDatabase; |
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// CLASS DECLARATION |
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/** |
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* Default implementation of thumbnail storage. |
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* |
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* @author Dan Rhodes |
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* @ingroup glx_thumbnail_creator |
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*/ |
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class CGlxtnThumbnailDatabase : public CBase, public MGlxtnThumbnailStorage, |
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public MGlxtnVolumeDatabaseObserver |
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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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* @param aDbFilename Filename (without path) for database. |
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* @param aStorageObserver Observer of storage operations. |
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*/ |
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IMPORT_C static CGlxtnThumbnailDatabase* NewL(const TDesC& aDbFilename, |
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MGlxtnThumbnailStorageObserver* aStorageObserver = NULL); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CGlxtnThumbnailDatabase(); |
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public: // New functions |
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public: // Functions from MGlxtnThumbnailStorage |
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void LoadThumbnailDataL(HBufC8*& aData, TGlxImageDataFormat& aFormat, |
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const TGlxMediaId& aId, const CGlxtnFileInfo& aFileInfo, |
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const TSize& aSize, TRequestStatus* aStatus); |
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void SaveThumbnailDataL(const TDesC8& aData, |
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TGlxImageDataFormat aFormat, const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, const TSize& aSize, |
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TRequestStatus* aStatus); |
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void DeleteThumbnailsL(const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, TRequestStatus* aStatus); |
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void CleanupThumbnailsL(TRequestStatus* aStatus); |
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void IsThumbnailAvailableL(const TGlxMediaId& aId, |
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const CGlxtnFileInfo& aFileInfo, |
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const TSize& aSize, TRequestStatus* aStatus); |
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void StorageCancel(); |
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void NotifyBackgroundError(const TGlxMediaId& aId, TInt aError); |
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private: // From MGlxtnVolumeDatabaseObserver |
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void HandleDatabaseError(TInt aError); |
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void HandleThumbnailIdFromMediaIdL( |
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const TGlxtnThumbnailId& aThumbId ); |
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void HandleThumbnailIdFromFilenameL( |
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const TGlxtnThumbnailId& aThumbId ); |
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void HandleThumbnailIdStoredL(); |
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void HandleThumbnail(TGlxImageDataFormat aFormat, HBufC8* aData); |
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void HandleThumbnailStored(); |
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void HandleMediaIdDeletedL(); |
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void HandleThumbnailsDeletedL(); |
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void HandleItemDeletedL(); |
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void HandleAvailabilityChecked(TInt aResult); |
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void HandleDatabaseCleanedL(); |
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private: |
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/** |
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* C++ default constructor. |
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*/ |
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CGlxtnThumbnailDatabase(); |
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112 |
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/** |
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* By default Symbian 2nd phase constructor is private. |
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* @param aDbFilename Filename (without path) for database. |
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* @param aStorageObserver Observer of storage operations. |
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*/ |
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void ConstructL(const TDesC& aDbFilename, |
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MGlxtnThumbnailStorageObserver* aStorageObserver); |
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120 |
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/** |
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* Continue current operation after receiving the thumbnail ID. |
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*/ |
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void DoHandleThumbnailIdL(); |
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/** |
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* Open a volume database on the specified drive. |
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* @param aDrive String beginnning with drive letter and colon. |
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*/ |
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CGlxtnVolumeDatabase* OpenDatabaseL(const TDesC& aDrive); |
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131 |
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private: // Data |
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enum TDatabaseOperation |
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{ |
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ELoading, ESaving, EDeleting, ECleaning, ECheckingAvailable |
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}; |
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137 |
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/** Pointer to a storage observer */ |
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MGlxtnThumbnailStorageObserver* iStorageObserver; |
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/** File server session */ |
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RFs iFs; |
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/** Path to the database files (excluding drive letter) */ |
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TFileName iDatabasePath; |
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/** Drive name of the phone memory drive */ |
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TDriveName iInternalDrive; |
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/** Array of open databases (one per volume) */ |
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RPointerArray<CGlxtnVolumeDatabase> iDatabaseArray; |
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/** Request status for asynchronous operation */ |
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TRequestStatus* iClientStatus; |
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/** Operation currently being carried out by the database */ |
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TDatabaseOperation iCurrentOperation; |
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/** Media ID for request */ |
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TGlxMediaId iMediaId; |
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/** URI for request (not owned) */ |
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const CGlxtnFileInfo* iFileInfo; |
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/** Thumbnail size for request */ |
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TSize iSize; |
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/** Data buffer for load request */ |
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HBufC8** iLoadData; |
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/** Data buffer for save request */ |
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TPtrC8 iSaveData; |
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/** Thumbnail format for load request */ |
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TGlxImageDataFormat* iLoadFormat; |
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/** Thumbnail format for save request */ |
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TGlxImageDataFormat iSaveFormat; |
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/** ID for thumbnail */ |
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TGlxtnThumbnailId iThumbId; |
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/** Index to count through iDatabaseArray */ |
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TInt iDatabaseIndex; |
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}; |
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|
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#endif // GLXTNDATABASE_H |
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// End of File |