author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 03 May 2010 12:48:51 +0300 | |
changeset 17 | ffa62e555b02 |
parent 15 | 7197e789b953 |
child 21 | ad31f4183ddc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2007 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: Implementation class of Thumbnail Manager |
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* |
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*/ |
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#ifndef THUMBNAILMANAGERIMPL_H |
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#define THUMBNAILMANAGERIMPL_H |
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#include <fbs.h> |
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#include "thumbnailmanager.h" |
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#include "thumbnailsession.h" |
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#include "thumbnailrequestqueue.h" |
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#include "thumbnaildata.h" |
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class CThumbnailRequestActive; |
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/** |
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* Implementation class of thumbnail engine. |
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* |
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* @since S60 v5.0 |
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*/ |
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NONSHARABLE_CLASS( CThumbnailManagerImpl ): public CThumbnailManager |
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{ |
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public: |
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/** |
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* Destructor |
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* |
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* @since S60 v5.0 |
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*/ |
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virtual ~CThumbnailManagerImpl(); |
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/** |
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* Two-phased constructor |
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* |
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* @since S60 v5.0 |
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* @param aObserver Observer to receive notifications about completed |
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* operations. |
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* @return New CThumbnailManagerImpl instance. |
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*/ |
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static CThumbnailManagerImpl* NewLC( MThumbnailManagerObserver& aObserver ); |
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/** |
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* Get a thumbnail for an object file. If a thumbnail already exists, it |
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* is loaded and if a thumbnail does not exist, it is created |
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* transparently. ThumbnailReady() callback will be called when the |
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* operation is complete. In addition, ThumbnailPreviewReady() |
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* callback may be called if EOptimizeForQualityWithPreview mode was |
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* defined. |
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* |
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* Current values for display mode, thumbnail size, flags and performance |
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* preference are used. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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* @param aClientData Pointer to arbitrary client data. |
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* This pointer is not used by the API for |
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* anything other than returning it in the |
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* ThumbnailReady callback. |
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* @param aPriority Priority for this operation |
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* @return Thumbnail request ID |
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*/ |
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TThumbnailRequestId GetThumbnailL( CThumbnailObjectSource& aObjectSource, |
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TAny* aClientData = NULL, const TInt aPriority = CActive::EPriorityIdle ); |
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/** |
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* Get a thumbnail for an object file. If a thumbnail already exists, it |
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* is loaded and if a thumbnail does not exist, it is created |
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* transparently. ThumbnailReady() callback will be called when the |
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* operation is complete. In addition, ThumbnailPreviewReady() |
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* callback may be called if EOptimizeForQualityWithPreview mode was |
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* defined. |
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* |
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* Current values for display mode, thumbnail size, flags and performance |
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* preference are used. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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* @param aClientData Pointer to arbitrary client data. |
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* This pointer is not used by the API for |
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* anything other than returning it in the |
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* ThumbnailReady callback. |
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* @param aPriority Priority for this operation |
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* @param aGeneratePersistentSizesOnly Only persitent sizes generated |
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* @return Thumbnail request ID |
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*/ |
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TThumbnailRequestId GetThumbnailL( CThumbnailObjectSource& aObjectSource, |
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TAny* aClientData, const TInt aPriority, TBool aGeneratePersistentSizesOnly ); |
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/** |
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* Get a persistent thumbnail for an object file. If a thumbnail already |
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* exists, it is loaded and if a thumbnail does not exist, it is created |
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* transparently. ThumbnailReady() callback will be called when the |
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* operation is complete. In addition, ThumbnailPreviewReady() |
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* callback may be called if EOptimizeForQualityWithPreview mode was |
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* defined. |
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* |
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* Current values for display mode, thumbnail size, flags and performance |
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* preference are used. |
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* |
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* @since S60 v5.0 |
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* @param aThumbnailId Thumbnail ID |
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* @param aThumbnailSizeType Thumbnail size enumeration |
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* @param aClientData Pointer to arbitrary client data. |
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* This pointer is not used by the API for |
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* anything other than returning it in the |
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* ThumbnailReady callback. |
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* @param aPriority Priority for this operation |
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* @return Thumbnail request ID. This can be used to |
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* cancel the request or change priority. |
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* The ID is specific to this CThumbnailManager |
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* instance and may not be shared with other |
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* instances. |
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*/ |
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TThumbnailRequestId GetThumbnailL( const TThumbnailId, |
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TAny* aClientData = NULL, TInt aPriority = CActive::EPriorityIdle ); |
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|
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/** |
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* Import an image to be used as thumbnail for an object. If a |
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* thumbnail already exists, it is loaded and if a thumbnail does not |
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* exist, it is created transparently. ThumbnailReady() callback will be |
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* called when the operation is complete. In addition, ThumbnailPreviewReady() |
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* callback may be called if EOptimizeForQualityWithPreview mode was |
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* defined. |
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* |
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* Current values for display mode, thumbnail size, flags and performance |
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* preference are used. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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* @param aTargetUri Target URI to which the imported thumbnail is linked. |
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* @param aClientData Pointer to arbitrary client data. |
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* This pointer is not used by the API for |
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* anything other than returning it in the |
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* ThumbnailReady callback. |
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* @param aPriority Priority for this operation |
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* @return Thumbnail request ID |
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*/ |
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TThumbnailRequestId ImportThumbnailL( CThumbnailObjectSource& aObjectSource, |
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const TDesC& aTargetUri, TAny* aClientData = NULL, |
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const TInt aPriority = CActive::EPriorityIdle ); |
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|
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/** |
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* Set persistent size scaled thumbnails for an object. If a |
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* thumbnail already exists, it is replaced and if a thumbnail does not |
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* exist, it is created transparently. |
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* |
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* Current values for display mode, thumbnail size, flags and performance |
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* preference are used. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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* @param aClientData Pointer to arbitrary client data. |
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* This pointer is not used by the API for |
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* anything other than returning it in the |
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* ThumbnailReady callback. |
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* @param aPriority Priority for this operation |
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* @return Thumbnail request ID. This can be used to |
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* cancel the request or change priority. |
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* The ID is specific to this CThumbnailManager |
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* instance and may not be shared with other |
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* instances. |
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*/ |
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TThumbnailRequestId SetThumbnailL( CThumbnailObjectSource& source, |
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TAny* aClientData = NULL, |
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TInt aPriority = CActive::EPriorityIdle ); |
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|
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/** |
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* Get the current display mode for thumbnail bitmaps. |
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* |
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* @since S60 v5.0 |
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* @return Default display mode for the thumbnail bitmaps. |
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*/ |
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TDisplayMode DisplayMode()const; |
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|
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/** |
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* Set the current display mode for thumbnail bitmaps. |
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* |
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* @since S60 v5.0 |
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* @param aDisplayMode New display mode value for the thumbnail bitmaps. |
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*/ |
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void SetDisplayModeL( const TDisplayMode aDisplayMode ); |
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|
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/** |
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* Get the current quality versus performance preference. |
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* |
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* @since S60 v5.0 |
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* @return Current quality versus performance preference. |
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*/ |
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TThumbnailQualityPreference QualityPreference()const; |
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/** |
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* Set quality versus performance preference. |
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* |
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* @since S60 v5.0 |
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* @param aQualityPreference New quality versus performance preference |
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* value. |
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*/ |
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void SetQualityPreferenceL( const TThumbnailQualityPreference |
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aQualityPreference ); |
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/** |
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* Get the current desired size for thumbnail bitmaps. |
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* |
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* @since S60 v5.0 |
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* @return Current desired size for thumbnail bitmaps (in pixels). |
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*/ |
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const TSize& ThumbnailSize()const; |
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/** |
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* Set desired size for thumbnail bitmaps. |
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* |
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* @since S60 v5.0 |
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* @param aThumbnailSize New quality for the desired thumbnail size. |
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*/ |
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void SetThumbnailSizeL( const TSize& aThumbnailSize ); |
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/** |
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* Set desired size for thumbnail bitmaps. |
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* |
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* @since S60 v5.0 |
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* @param aThumbnailSize New quality for the desired thumbnail size. |
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*/ |
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void SetThumbnailSizeL( const TThumbnailSize aThumbnailSize ); |
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/** |
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* Get current flags for thumbnail generation. |
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* |
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* @since S60 v5.0 |
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* @return Current flags. |
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*/ |
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TThumbnailFlags Flags()const; |
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/** |
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* Set flags for thumbnail generation. Several flags may be enabled |
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* by combining the values using bitwise or. |
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* |
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* @since S60 v5.0 |
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* @param aFlags New flags. |
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*/ |
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void SetFlagsL( const TThumbnailFlags aFlags ); |
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/** |
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* Delete all thumbnails for a given object. This is an asynchronous |
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* operation, which always returns immediately. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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*/ |
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void DeleteThumbnails( CThumbnailObjectSource& aObjectSource ); |
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/** |
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* Delete thumbnails by TThumbnailId. This is an asynchronous |
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* operation, which always returns immediately. |
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* |
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* @since S60 v5.0 |
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* @param aItemId TThumbnailId |
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*/ |
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void DeleteThumbnails( const TThumbnailId aItemId ); |
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|
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/** |
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* Create thumbnail for a given object. This is an asynchronous |
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* operation, which always returns immediately. No callbacks are |
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* emitted. |
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* |
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* @since S60 v5.0 |
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* @param aObjectSource Source object or file |
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* @param aPriority Priority for this operation |
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* @return Thumbnail creation request ID |
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*/ |
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TThumbnailRequestId CreateThumbnails( CThumbnailObjectSource& aObjectSource, |
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TInt aPriority = CActive::EPriorityIdle ); |
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/** |
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* Cancel a thumbnail operation. |
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* |
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* @since S60 v5.0 |
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* @param aId Request ID for the operation to be cancelled. |
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* @return Symbian OS error code or KErrNone if cancelling was |
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* successful. |
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*/ |
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TInt CancelRequest( const TThumbnailRequestId aId ); |
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/** |
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* Change the priority of a queued thumbnail operation. |
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* |
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* @since S60 v5.0 |
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* @param aId Request ID for the request which to assign a new |
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* priority. |
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* @param aNewPriority New priority value |
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* @return Symbian OS error code or KErrNone if change was |
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* successful. |
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*/ |
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TInt ChangePriority( const TThumbnailRequestId aId, const TInt aNewPriority ); |
0
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/** |
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* Get a list of supported file formats for object files. |
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* |
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* The return value is a reference to a list that contains each |
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* supported MIME type. There may also be wildcards, such as "image/ *". |
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* |
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* The returned reference is valid until CThumbnailManager is |
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* destroyed or GetSupportedMimeTypesL() is called again. |
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* |
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* @since S60 v5.0 |
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* @return A list of supported MIME types. May contain wildcards. |
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* Ownership not transferred. |
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*/ |
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const CDesCArray& GetSupportedMimeTypesL(); |
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/** |
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* Update Thumbnails by TThumbnailId. This is an asynchronous |
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* operation, which always returns immediately. |
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* |
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* @since S60 v5.0 |
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* @param aItemId TThumbnailId |
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* @param aPath (New) path for the Thumbnail |
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* @param aOrientation Thumbnail orientation |
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* @param aModified Last modified |
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* @param aPriority Priority for this operation |
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*/ |
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void UpdateThumbnailsL( const TThumbnailId aItemId, const TDesC& aPath, |
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const TInt aOrientation, const TInt64 aModified, TInt aPriority ); |
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|
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/** |
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* Rename Thumbnails. This is an asynchronous |
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* operation, which always returns immediately. |
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* |
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* @since S60 v5.0 |
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* @param aCurrentPath Current path of the Thumbnail |
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* @param aNewPath New path for the Thumbnail |
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* @param aPriority Priority for this operation |
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* @return Thumbnail request ID. This can be used to |
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* cancel the request or change priority. |
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* The ID is specific to this CThumbnailManager |
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* instance and may not be shared with other |
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* instances. |
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*/ |
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TThumbnailRequestId RenameThumbnailsL( const TDesC& aCurrentPath, |
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const TDesC& aNewPath, TInt aPriority = CActive::EPriorityIdle ); |
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|
0
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private: |
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|
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/** |
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* C++ default constructor |
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* |
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* @since S60 v5.0 |
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* @param aObserver Observer to receive notifications about completed |
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* operations. |
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* @return New CThumbnailManagerImpl instance. |
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*/ |
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CThumbnailManagerImpl( MThumbnailManagerObserver& aObserver ); |
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|
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/** |
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* Symbian 2nd phase constructor can leave. |
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* |
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* @since S60 v5.0 |
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*/ |
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void ConstructL(); |
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|
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/** |
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* Check that given priority is in range of CActive::TPriority |
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* |
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* @since S60 v5.0 |
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* @param aPriority Priority |
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* @return Valid priority. |
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*/ |
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TInt ValidatePriority( const TInt aPriority ); |
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|
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|
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private: |
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// data |
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|
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/** |
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* Default width of thumbnail. |
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*/ |
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TInt iDefaultWidth; |
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/** |
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* Default height of thumbnail |
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*/ |
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TInt iDefaultHeight; |
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/** |
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* Observer to receive notifications about completed operations. |
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*/ |
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MThumbnailManagerObserver& iObserver; |
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/** |
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* Session. |
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*/ |
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RThumbnailSession iSession; |
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/** |
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* Fileserver. |
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*/ |
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RFs iFs; |
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/** |
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* Request queue processor. |
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*/ |
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CThumbnailRequestQueue* iRequestQueue; |
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/** |
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* Display mode. |
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*/ |
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TDisplayMode iDisplayMode; |
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/** |
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* Flags. |
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*/ |
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TThumbnailFlags iFlags; |
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/** |
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* Quality preference. |
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*/ |
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TThumbnailQualityPreference iQualityPreference; |
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|
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/** |
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* Requested size of thumbnail. |
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*/ |
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TSize iSize; |
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|
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TThumbnailSize iThumbnailSize; |
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|
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/** |
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* Request ID for this thumbnail request, session specific. |
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*/ |
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TThumbnailRequestId iRequestId; |
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|
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/** |
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* Font and Bitmap Server session. Only used unless the client |
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* does not already have an open session. |
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*/ |
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RFbsSession iFbsSession; |
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/** |
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* Temporary buffer for filename handling |
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*/ |
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TFileName iFileNameBuf; |
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|
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/** |
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* List of supported MIME-types. |
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* Own. |
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*/ |
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CDesCArraySeg* iMimeTypeList; |
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}; |
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|
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#endif |