author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 15:03:46 +0300 | |
branch | RCL_3 |
changeset 23 | 61bc0f252b2b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 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: copy of normally used "system" file for thumbnailmanager for qt |
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* |
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*/ |
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#ifndef THUMBNAILMANAGER_QT_H |
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#define THUMBNAILMANAGER_QT_H |
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#include <qobject> |
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#include <QPixmap.h> |
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#include <QStringList> |
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#include <QTimer> |
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class ThumbnailManager : public QObject |
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{ |
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Q_OBJECT |
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public: |
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/** |
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* Constructor |
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* |
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* @param parentPtr parent |
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*/ |
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ThumbnailManager( QObject* parentPtr = NULL ); |
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/** |
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* Destructor |
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*/ |
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virtual ~ThumbnailManager(); |
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|
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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. If thumbnail loadinf fails thumbnailReady signal is emited |
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* with null pixmap and error code. |
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* |
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* @param fileName Source object or file |
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* @param clientData 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 signal. |
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* @param priority Priority for this operation |
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* @return Thumbnail request ID or -1 if request failed. 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 tnm |
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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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int getThumbnail(const QString& fileName, void * clientData = NULL, |
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int priority = 0); |
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/** |
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* Set a thumbnail for an object file generated from pixmap delivered. |
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* thumbnailReady() signal will be emited when the operation is complete. |
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* |
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* @param source QImage from which the thumbnail will be created |
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* @param fileName file name |
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* @param clientData 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 priority Priority for this operation |
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* @return Thumbnail request ID or -1 if request failed. This can be used to |
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* cancel the request or change priority. |
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* |
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*/ |
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int setThumbnail( const QImage& source, const QString& fileName, |
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void * clientData = NULL, int priority = 0 ); |
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/** |
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* Cancel a thumbnail operation. |
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* |
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* @param id Request ID for the operation to be cancelled. |
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* @return true if cancelling was successful. |
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*/ |
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bool cancelRequest(int id); |
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signals: |
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/** |
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* Final thumbnail bitmap generation or loading is complete. |
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* |
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* @param pixmap An object representing the resulting thumbnail. |
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* @param clientData Client data |
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* @param id Request ID for the operation |
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* @param errorCode error code |
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*/ |
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void thumbnailReady( QPixmap , void * , int , int ); |
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private slots: |
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void emulateThumbnailReady(); |
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Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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private: |
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Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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int mCurrentThumbnailId; |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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QList<int> mThumbnailManagerIds; |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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QTimer mTimer; |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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}; |
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#endif // THUMBNAILMANAGER_QT |