author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 14:59:52 +0300 | |
changeset 15 | cf5481c2bc0b |
child 52 | e3cecb93e76a |
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: VideoThumbnailData singleton class definition |
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*/ |
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#ifndef __VIDEOTHUMBNAILDATA_H__ |
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#define __VIDEOTHUMBNAILDATA_H__ |
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// INCLUDES |
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#include <qobject.h> |
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#include <qicon.h> |
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#include <qpointer.h> |
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#include <mpxitemid.h> |
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#include "videocollectionexport.h" |
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// FORWARD DECLARATIONS |
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class VideoThumbnailDataPrivate; |
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class VideoSortFilterProxyModel; |
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// CLASS DECLARATIONS |
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class VIDEOCOLLECTION_DLL_EXPORT VideoThumbnailData : public QObject |
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{ |
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/** |
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* Defined to be able to use signals and slots. |
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*/ |
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Q_OBJECT |
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/** |
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* disable copy-constructor and assignment operator |
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*/ |
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Q_DISABLE_COPY(VideoThumbnailData) |
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public: |
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/* |
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* Thumbnail fetch priorities. |
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*/ |
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enum VideoThumbnailPriority |
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{ |
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VideoThumbnailPriorityLow = 2000, |
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VideoThumbnailPriorityMedium = 3000, |
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VideoThumbnailPriorityHigh = 5000 |
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}; |
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/** |
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* Returns singleton instance for this class. |
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* |
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* @return The singleton instance. |
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* |
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*/ |
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static VideoThumbnailData &instance(); |
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/** |
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* Method removes thumbnail data from the local repository. |
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* |
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* @param mediaId id for media whose thumbnail is to be removed |
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* |
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* @return bool: true if item removed correctly, false if not. |
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* |
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*/ |
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bool removeThumbnail(TMPXItemId mediaId); |
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/** |
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* Method returns a pointer to video's thumbnail. |
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* |
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* If thumbnail fetching is ongoing or not yet started, pointer to default |
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* thumbnail is returned. |
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* |
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* @param mediaId media id for which to get thumbnail |
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* @param tnData reference to thumbnail data where data is occupied |
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* |
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* @return QIcon* thumbnail pointer |
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* |
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*/ |
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const QIcon* getThumbnail(TMPXItemId mediaId); |
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/** |
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* Starts background thumbnail fetching, the model used for the background fetching |
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* is also changed. |
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* |
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* @param model model of the items for the fetching. |
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* @param fetchIndex index where to start the background thumbnail fetching. |
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* |
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*/ |
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void startBackgroundFetching(VideoSortFilterProxyModel *model, int fetchIndex); |
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/** |
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* Enables or disables thumbnail background fetching. Default is enabled. |
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* |
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* @param enable true enables and false disables thumbnail background fetching. |
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*/ |
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void enableBackgroundFetching(bool enable); |
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/** |
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* Enables or disables thumbnail creation. Default is enabled. Thumbnails |
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* that have been already generated are fetched still. |
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* |
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* @param enable true enables and false disables thumbnail creation. |
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*/ |
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void enableThumbnailCreation(bool enable); |
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/** |
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* Frees allocated data for thumbnails and cancels ongoing fetches. |
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* |
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*/ |
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void freeThumbnailData(); |
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signals: |
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/** |
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* This signal is emitted from thumbnailReadySlot, when |
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* |
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* @param mediaIds: media ids of the videos whose thumbnail is ready. |
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* |
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*/ |
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void thumbnailsFetched(QList<TMPXItemId> mediaIds); |
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private: |
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/** |
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* Default constructor |
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*/ |
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VideoThumbnailData(); |
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/** |
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* Destructor |
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*/ |
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~VideoThumbnailData(); |
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/** |
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* Private implementation. |
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*/ |
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QPointer<VideoThumbnailDataPrivate> const d_ptr; |
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}; |
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#endif // __VIDEOTHUMBNAILDATA_H__ |
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// End of file |