phoneapp/phoneuiview/inc/cphoneaudiocontroller.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 12 Mar 2010 15:42:40 +0200
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/*
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* Copyright (c) 2002-2006 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:  It manages incall indicator.
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*
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*/
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#ifndef CPHONEAUDIOCONTROLLER_H
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#define CPHONEAUDIOCONTROLLER_H
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// INCLUDES
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class CPhoneStatusPane;
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class TPhoneCommandParam;
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class CPhoneTimer;
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// CLASS DECLARATION
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/**
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*  It manages navi pane audio indicators
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*
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*  @since 1.0
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*/
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class CPhoneAudioController : public CBase, public MCoeControlObserver,
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    public MCoeForegroundObserver
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    {
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    public:  // Constructors and destructor      
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        /**
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        * Two-phased constructor.
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        * @return new instance.
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        */
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        static CPhoneAudioController* NewL();
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        /**
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        * Destructor.
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        */
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        ~CPhoneAudioController();
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    public: // New functions
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        /**
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        * Activates voice volume control.
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        */
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        void ActivateVolumeControlL();
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        /**
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        * Deactivate voice volume control.
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        */
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        void DeactivateVolumeControl();
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        /**
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        * Update control using the specified data
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        * @param aCommandParam command parameter
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        */
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        void HandleVolumeChangeL( TPhoneCommandParam* aCommandParam );
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        /**
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        * Update control using the specified data
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        * @param aCommandParam command parameter
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        */
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        void HandleIhfChange( TPhoneCommandParam* aCommandParam );
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        /**
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        * Update control using the specified data
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        * @param aCommandParam command parameter
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        */
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        void HandleMuteChange( TPhoneCommandParam* aCommandParam );
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        /**
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        * Gets volume level from navi pane control.
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        * @return Volume level.
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        */
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        TInt VolumeLevelFromControl();  
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    private: // MCoeControlObserver
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        void HandleControlEventL( CCoeControl* aControl, 
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                                  TCoeEvent aEventType ); 
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    private: // MCoeForegroundObserver
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        /**
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         * Handles the application coming to the foreground.
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         */
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        void HandleGainingForeground();
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        /**
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         * Handles the application going into the background.
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         */
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        void HandleLosingForeground();
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    private:
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        /**
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        * C++ constructor.
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        */
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        CPhoneAudioController();
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        /**
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        * Symbian OS constructor.
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        */
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        void ConstructL();
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        /**
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        * Update indicator.
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        */
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        void ActivateL();
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        /**
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        * Recovery system callback
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        */
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        static TInt DoRecoverActivateL( TAny* aAny );
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        /**
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        * Pushes new decorator to navi pane replacing the
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        * previous one if needed.
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        * @param aNew new to replace the old one.
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        */
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        void PushL(CAknNavigationDecorator& aNew);
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        /**
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        * Callback function. Called when navi pane should be updated 
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        * back to default.
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        * @param aAny pointer to instance of this class.
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        * @return KErrNone always.
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        */
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        static TInt DoUpdateNaviPaneToDefault( TAny* aAny );
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        /**
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        * Get current volume decorator (Ihf or Ear) 
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        * @return Current volume decorator
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        */
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        CAknNavigationDecorator& VolumeDecorator();
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        /**
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        * Get current volume control (Ihf or Ear) 
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        * @return Current volume control (Ihf or Ear)         
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        */
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        CAknVolumeControl& VolumeControl();    
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        /**
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        * Get current volume level (Ihf or Ear)  
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        * @return Current Ihf or Ear volume level         
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        */        
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        TInt VolumeLevel(); 
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        /**
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        * Select decorator based on current audio status
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        * @return Selected decorator (Ihf, Ear or Muted).         
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        */
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        CAknNavigationDecorator& SelectDecoratorL();         
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        /**
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        * Set volume level for given volume control
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        * @param aVolumeControl Volume control
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        * @param aVolumeLevel New volume level
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        */
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        void SetVolumeLevel(CAknVolumeControl& aVolumeControl, TInt aVolumeLevel);
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    private:    // Data
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        // Recovery id for activating volume control
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        TInt iActivateRecoveryId;    
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        CPhoneStatusPane* iStatusPane;
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        // Count the volume control activations
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        TInt iVolumeControlCount;
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        // Owned IHF volume control
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        CAknNavigationDecorator* iIhfVolumeControl;
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        // IHF volume, from 1 to 10
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        TInt iIhfVolume;
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        // ETrue IHF is active
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        TBool iIhfMode;
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        // ETrue if transfer to or from IHF pending
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        TBool iIhfTransferPending; 
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        // Owned non-IHF volume control.
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        CAknNavigationDecorator* iEarVolumeControl;
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        // Non-IHF volume, from 1 to 10
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        TInt iEarVolume; 
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        // Owned muted indicator
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        CAknNavigationDecorator* iMutedControl;
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        // ETrue phone is muted
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        TBool iMuted;
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        // ETrue if timed control transfer to muted is pending
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        TBool iTimedMuteTransferPending; 
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        // Pointer the current control that is in navi pane
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        CAknNavigationDecorator* iOldControl;
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        // Owned timer to update navi pane
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        CPhoneTimer* iNaviPaneUpdateTimer;
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        /**
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         * ETrue if Telephony is the foreground application,
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         * otherwise EFalse.
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         */
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        TBool iPhoneInForeground;
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    };
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#endif      // CPHONEAUDIOCONTROLLER_H
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// End of File