imagehandlingutilities/thumbnailmanager/tmcommon/inc/tmactivitymanager.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 31 Mar 2010 22:04:49 +0300
branchRCL_3
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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:  Activity Manager
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 *
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*/
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#include <e32base.h>
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#include <hwrmlight.h>
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#ifndef TMACTIVITYMANAGER_H
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#define TMACTIVITYMANAGER_H
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//5.0 and 9.2 behaves totally different way, 
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//! uncomment on 5.0 !
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#define MONITOR_LIGHTS
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class MTMActivityManagerObserver
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{
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public :
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    virtual void ActivityChanged(const TBool aActive) = 0;
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};
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class CTMActivityManager : public CActive
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#ifdef MONITOR_LIGHTS   
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                           ,public MHWRMLightObserver
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#endif
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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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     * @since S60 v5.0
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     * @return Instance of CThumbAGProcessor.
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     */
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    static CTMActivityManager* NewL(MTMActivityManagerObserver* aObserver, TInt aTimeout = 60);
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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 ~CTMActivityManager();
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    void SetTimeout(TInt aTimeout);
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    void Start();
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    void Reset();
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    void Stop();
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    TBool IsInactive();
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protected: // from CActive
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    void DoCancel();
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    void RunL();
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    TInt RunError(TInt aError);
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protected:
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    CTMActivityManager(MTMActivityManagerObserver* aObserver, TInt aTimeout);
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    void ConstructL();
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    void NotifyObserver();
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#ifdef MONITOR_LIGHTS
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private: //From MHWRMLightObserver
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    void LightStatusChanged(TInt aTarget, CHWRMLight::TLightStatus aStatus);
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#endif
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protected:
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    enum TWatch { ENone = 0, EWaitingForInactivity, EWaitingForActivity };
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protected:
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    RTimer iTimer;
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    TWatch iWatch;
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    MTMActivityManagerObserver* iObserver; ///The observer of activity status
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    TInt iTimeout; ///Current inactivity period
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#ifdef MONITOR_LIGHTS
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    //Backlight control 
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    CHWRMLight* iLight;
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    //backlight status
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    TBool iLights;
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#endif
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    //previous status
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    TInt iPreviousStatus;
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    TBool iFirstRound;
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};
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#endif // TMACTIVITYMANAGER_H