author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 19 Aug 2010 09:41:53 +0300 | |
branch | RCL_3 |
changeset 21 | 2b7283837edb |
parent 0 | 5e5d6b214f4f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008 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: presene avatar decoder handler |
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* |
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* |
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*/ |
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#ifndef CSERVICEWIDGETIMAGEDECODER_H |
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#define CSERVICEWIDGETIMAGEDECODER_H |
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#include <e32base.h> |
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#include <f32file.h> |
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class CImageDecoder; |
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class CBitmapScaler; |
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class CFbsBitmap; |
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class CImageEncoder; |
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/** |
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* decode notification class |
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* |
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* @lib servicewidgetdatapublisher.dll |
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* @since S60 v5.0 |
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*/ |
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class MServiceWidgetImagerDecodeObserver |
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{ |
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public : |
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/** |
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* HandlerDecodeComplete notification once decode complete |
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* @param aBitmap decoded bitmap |
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* @since S60 v5.0 |
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* takes the ownership of aBitmap |
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*/ |
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virtual void HandlerDecodeCompleteL() = 0 ; |
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/** |
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* virtaul Destructor |
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* @since S60 v5.0 |
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*/ |
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virtual ~MServiceWidgetImagerDecodeObserver() |
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{ |
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} |
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}; |
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/** |
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* Utility class for asynchronously decoding the header thumbnail image |
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* |
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* @lib servicewidgetdatapublisher.dll |
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* @since S60 v5.0 |
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*/ |
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class CServiceWidgetImageDecoder : public CActive |
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{ |
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enum TSWDEOperationId |
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{ |
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EOpUnknown = -1, |
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EOpEncodeBitmap, |
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EOpComplete |
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}; |
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public: |
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/** |
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* Two-phased constructor |
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* |
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* @param aHeader The header control to which the bitmap is to be inserted after loading |
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* @param aBitmapData Descriptor containing the bitmap data stream |
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* @return a instance of same class |
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* @since S60 v5.0 |
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*/ |
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static CServiceWidgetImageDecoder* NewL(MServiceWidgetImagerDecodeObserver& aObserver ); |
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/** |
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* Destructor |
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* @since S60 v5.0 |
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*/ |
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~CServiceWidgetImageDecoder(); |
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/** |
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* Starts the decoding process |
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* @since S60 v5.0 |
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* @param aBitmapData Descriptor containing the bitmap data stream |
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* |
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*/ |
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void StartDecodingL( const TDesC8& aBitmapData ); |
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/** |
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* From CActive |
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* (see details from baseclass ) |
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* @since S60 v5.0 |
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*/ |
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void RunL(); |
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/** |
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* From CActive |
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* (see details from baseclass ) |
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* @since S60 v5.0 |
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*/ |
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void DoCancel(); |
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private: |
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/** |
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* First-phase (C++) constructor |
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* @param aHeader The header control to which the bitmap is to be inserted after loading |
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* @since S60 v5.0 |
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*/ |
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CServiceWidgetImageDecoder(MServiceWidgetImagerDecodeObserver& aObserver); |
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|
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/** |
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* Second phase constructor |
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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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* helper to do encoding |
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* @since S60 v5.0 |
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*/ |
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void StartEncodingL(); |
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private : // data |
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/** |
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* Not Owns : notify once complete |
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*/ |
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MServiceWidgetImagerDecodeObserver& iObserver; |
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/** |
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* Owns : The image decoder whose service is called to decode the image |
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*/ |
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CImageDecoder* iImgDecoder; |
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/** |
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* Owns : The image encoder whose service is called to decode the image |
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*/ |
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CImageEncoder* iImageEncoder; |
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/** |
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* Owns : Handle to the file server session for loading the bitmap |
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*/ |
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RFs iFs; |
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/** |
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* The bitmap. |
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* Owned until decoding is complete, then ownersip is transferred to header control. |
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*/ |
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CFbsBitmap* iBitmap; // owned until completion |
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/** |
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* Owns : Copy of the bitmap data stream |
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*/ |
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HBufC8* iBitmapData; |
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/** |
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* Owns : Copy of mimeType |
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*/ |
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HBufC8* iMimeType; |
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// next operation to perform |
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TSWDEOperationId iNextOperationId; |
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}; |
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#endif /*CSERVICEWIDGETIMAGEDECODER_H*/ |