/*

* Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Implemantation for CCamBatteryPaneController class.

*

*/

#include "cambatterypanecontroller.h"

#include <e32base.h>

#include <e32property.h>                // RProperty

#include <hwrmpowerstatesdkpskeys.h>    // P&S keys

#include <eikdef.h>                     // KEikColorResourceChange

#include <AknsConstants.h>              // KAknsMessageSkinChange 

#include "cambatterypanedrawer.h"

#include "CamPropertyWatcher.h"

#include "CamUtility.h"

#include "CamAppUi.h"

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::CCamBatteryPaneController

// ---------------------------------------------------------------------------

//

CCamBatteryPaneController::CCamBatteryPaneController(

    MCamBatteryPaneObserver& aObserver, TBool aCallbackActive ) :

    iObserver( aObserver ), iCallbackActive( aCallbackActive )

    {

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::~CCamBatteryPaneController

// ---------------------------------------------------------------------------

//

CCamBatteryPaneController::~CCamBatteryPaneController()

  {

  PRINT ( _L("Camera => ~CCamBatteryPaneController") );

  if (iTicker)

    {

    iTicker->Cancel();

    }

  delete iTicker;	

  delete iDrawer;	 

  delete iBatteryStrengthWatcher;    

  delete iBatteryChargingWatcher;

  PRINT ( _L("Camera <= ~CCamBatteryPaneController") ); 	   

  }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::NewL

// ---------------------------------------------------------------------------

//

CCamBatteryPaneController* CCamBatteryPaneController::NewL(

    MCamBatteryPaneObserver& aObserver,

    TBool aCallbackActive )

    {

    PRINT ( _L("Camera => CCamBatteryPaneController::NewL") );		

    CCamBatteryPaneController* self = new (ELeave) CCamBatteryPaneController(

            aObserver, aCallbackActive );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop(); // self

    PRINT ( _L("Camera <= CCamBatteryPaneController::NewL") );

    return self;    

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::ConstructL

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::ConstructL()

    {

    PRINT ( _L("Camera => CCamBatteryPaneController::ConstructL") );	

    iDrawer = CCamBatteryPaneDrawer::NewL();

    iTicker = CPeriodic::NewL( CActive::EPriorityHigh );

    // Construct property watchers for battery level and charging status

    iBatteryStrengthWatcher = CCamPropertyWatcher::NewL( *this, KPSUidHWRMPowerState, KHWRMBatteryLevel );  

    iBatteryChargingWatcher = CCamPropertyWatcher::NewL( *this, KPSUidHWRMPowerState, KHWRMChargingStatus );

    // Subscribe to the properties 

    iBatteryStrengthWatcher->Subscribe();

    iBatteryChargingWatcher->Subscribe();   

    // Read initial values for battery level and charging status

    ReadCurrentState();

    PRINT ( _L( "Camera <= CCamBatteryPaneController::ConstructL" ) );	

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::Pause

// ---------------------------------------------------------------------------

//    

void CCamBatteryPaneController::Pause( TBool aPause )

    {

    PRINT1 ( _L("Camera => CCamBatteryPaneController::Pause( %d)"), aPause );	

    if( aPause )

      {

      // Pause battery pane controller  

      if( !iPaused )

        {  

        // Prevent callbacks

        TBool oldCbState = iCallbackActive; 

        iCallbackActive = EFalse;

        // Stop recharging

        if( iRecharging )

          {

          StopRecharging(); 

          }

        // Cancel notifications of battery events      

        iBatteryStrengthWatcher->Cancel();

        iBatteryChargingWatcher->Cancel();  

        iPaused = ETrue;

        // Restore callback state

        iCallbackActive = oldCbState;

        } 

      }

    else

      {

      // Restart battery pane controller  

      if( iPaused )          

        {

        // Re-subscribe to battery events  

        iBatteryStrengthWatcher->Subscribe();

        iBatteryChargingWatcher->Subscribe();

        ReadCurrentState();

        iPaused = EFalse;

        }

      }  

    PRINT( _L("Camera <= CCamBatteryPaneController::Pause") );	  

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::SetCallbackActive

// ---------------------------------------------------------------------------

//    

void CCamBatteryPaneController::SetCallbackActive( TBool aActive )

    {

    iCallbackActive = aActive;

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::IsBatteryLow

// ---------------------------------------------------------------------------

//    

TBool CCamBatteryPaneController::IsBatteryLow()

    {

    return ( ( iBatteryStrength >= 0 )&& ( iBatteryStrength <= 2 )

            && !iRecharging );

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::SetBatteryStrength

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::SetBatteryStrength( TInt aStrength )

    {    	

    PRINT( _L("Camera => CCamBatteryPaneController::SetBatteryStrength") );	    	

    // Drawer uses battery strength for indexing a table, so make

    // sure it stays within valid boundaries

    if( aStrength > KMaxBatteryStrength )

        {

        iBatteryStrength = KMaxBatteryStrength;

        }

    else if( aStrength < KMinBatteryStrength )

        {

        iBatteryStrength = KMinBatteryStrength;        

        }

    else

        {

        iBatteryStrength = aStrength;    

        }

    if( !iRecharging )

        {        

        iDrawer->SetBatteryStrength( iBatteryStrength );

        NotifyObserver();

        }

    PRINT( _L("Camera <= CCamBatteryPaneController::SetBatteryStrength") );	        

    }    

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::SetLocation

// ---------------------------------------------------------------------------    

//

void CCamBatteryPaneController::SetLocation( TPoint aLocation )

    {

    iDrawer->SetLocation( aLocation );

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::Rect

// ---------------------------------------------------------------------------    

//

TRect CCamBatteryPaneController::Rect() const

	{

	return iDrawer->Rect();	

	}

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::Draw

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::Draw( CBitmapContext& aGc ) const

//void CCamBatteryPaneController::Draw( CWindowGc& aGc ) const

    {

    CCamAppUi* appUi = static_cast<CCamAppUi*>(CEikonEnv::Static()->AppUi());

    // When battery recharge animation runs over, indicator needs clearing

    // PostCap view has redraw functions of its own, so it doesn't need this

    if ( iRechargeBatteryStrength == 0 && 

         iRecharging &&

         !appUi->IsBurstEnabled() &&

		 appUi->CurrentViewState() != ECamViewStatePostCapture && 

         !(appUi->IsSecondCameraEnabled() && appUi->IsQwerty2ndCamera() ) )

        {    

        iDrawer->ClearBattery( aGc );

        }

    iDrawer->Draw( aGc );

    }    

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::StartRecharging

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::StartRecharging()

    {

    PRINT( _L("Camera => CCamBatteryPaneController::StartRecharging") );  	

    // Stop current timer

    iTicker->Cancel();

    // Initialize

    iRecharging = ETrue;

    iRechargeBatteryStrength = KMinBatteryStrength; 

    // Give initial strength value to drawer and notify observer

    iDrawer->SetBatteryStrength( iRechargeBatteryStrength );

    NotifyObserver();

    // Start the animation

    iTicker->Start( KBatteryRechargeTick, KBatteryRechargeTick, TCallBack(TickerCallback, this) );

    PRINT( _L("Camera => CCamBatteryPaneController::StartRecharging") );  

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::StopRecharging

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::StopRecharging()

    {

    PRINT( _L("Camera => CCamBatteryPaneController::StopRecharging") ); 	

    // Stop the timer and give the original battery

    // strength to drawer class

    iTicker->Cancel();

    iRecharging = EFalse;

    iDrawer->SetBatteryStrength( iBatteryStrength );

    NotifyObserver();

    PRINT( _L("Camera <= CCamBatteryPaneController::StopRecharging") ); 

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::NotifyObserver

// ---------------------------------------------------------------------------    

//

void CCamBatteryPaneController::NotifyObserver()

    {

    if( iCallbackActive )

        {

        iObserver.BatteryPaneUpdated();

        }

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::UpdateRechargeBatteryStrength

// ---------------------------------------------------------------------------    

//

void CCamBatteryPaneController::UpdateRechargeBatteryStrength()

    {    

    PRINT( _L("Camera => CCamBatteryPaneController::UpdateRechargeBatteryStrength") );	

    iRechargeBatteryStrength++;

    if( iRechargeBatteryStrength > KMaxBatteryStrength )

        {

        iRechargeBatteryStrength = KMinBatteryStrength;        

        }

    iDrawer->SetBatteryStrength( iRechargeBatteryStrength );

    NotifyObserver();   

    PRINT( _L("Camera <= CCamBatteryPaneController::UpdateRechargeBatteryStrength") );	     

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::TickerCallback

// ---------------------------------------------------------------------------    

//

TInt CCamBatteryPaneController::TickerCallback( TAny* aThis )

    {    	

	CCamBatteryPaneController* self = static_cast<CCamBatteryPaneController*>( aThis );

	if( self )

		{

		self->UpdateRechargeBatteryStrength();		

		}    

    return ETrue;    

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::ReadCurrentState

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::ReadCurrentState()

    {

    PRINT( _L("Camera => CCamBatteryPaneController::ReadCurrentState") ); 	

    TInt batteryStrength = 0;

    TInt chargingStatus = 0;

    TInt err = KErrNone;

    // Disable callbacks to avoid two separate callbacks for charging

    // status and battery level

    TBool callbackActive = iCallbackActive;

    iCallbackActive = EFalse;

    // Get the battery strength    

    err = iBatteryStrengthWatcher->Get( batteryStrength );

    if( KErrNone == err && -1 != batteryStrength )

        {

        // We got an acceptable value

        SetBatteryStrength( batteryStrength );

        }

    else

        {

        // Default to lowest value

        SetBatteryStrength( KMinBatteryStrength );

        }    

    // Get current recharging state       

    err = iBatteryChargingWatcher->Get( chargingStatus );

    if ( KErrNone == err )

        {

        HandleChargingStatusChange( chargingStatus );

        }

    else

        {        

        StopRecharging();                

        }        

    // Restore callbacks and notify the observer

    iCallbackActive = callbackActive;

    NotifyObserver();                

    PRINT( _L("Camera <= CCamBatteryPaneController::ReadCurrentState") ); 	

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::HandleChargingStatusChange

// ---------------------------------------------------------------------------

//

void CCamBatteryPaneController::HandleChargingStatusChange( TInt aStatus )

    {

    PRINT( _L("Camera => CCamBatteryPaneController::HandleChargingStatusChange") );	    	

    if( EChargingStatusCharging == aStatus || 

        EChargingStatusAlmostComplete == aStatus ||

        EChargingStatusChargingContinued == aStatus )

        {

        // The battery is being recharged

        if( !iRecharging )

            {

            // Start the recharging animation

            StartRecharging();

            }

        }

    else

        {

        // The battery is currently not being recharged

        if( iRecharging )

            {

            // Stop the recharging animation

            StopRecharging();

            }        

        }    

    PRINT( _L("Camera <= CCamBatteryPaneController::HandleChargingStatusChange") );	        

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::HandlePropertyChangedL

// ---------------------------------------------------------------------------    

//

void CCamBatteryPaneController::HandlePropertyChangedL( const TUid& aCategory, const TUint aKey )

    {

    PRINT( _L("Camera => CCamBatteryPaneController::HandlePropertyChangedL") ); 	    	

    TInt value;

    if( KPSUidHWRMPowerState == aCategory && KHWRMBatteryLevel == aKey )

        {

        TInt err = iBatteryStrengthWatcher->Get( value );

        if( KErrNone == err && -1 != value )

            {

            SetBatteryStrength( value );

            }

        }

    else if( KPSUidHWRMPowerState == aCategory && KHWRMChargingStatus == aKey )

        {

        TInt err = iBatteryChargingWatcher->Get( value );

        if( KErrNone == err && -1 != value )

            {

            HandleChargingStatusChange( value );

            }

        }

    else

        {

        // Do nothing. For Lint.

        }

    PRINT( _L("Camera <= CCamBatteryPaneController::HandlePropertyChangedL") );

    }

// ---------------------------------------------------------------------------

// CCamBatteryPaneController::HandleResourceChange

// ---------------------------------------------------------------------------    

//   

void CCamBatteryPaneController::HandleResourceChange( TInt aType )

    {

    PRINT( _L("Camera => CCamBatteryPaneController::HandleResourceChange") );	

    if( KAknsMessageSkinChange == aType ||

        KEikColorResourceChange == aType )

        {

        iDrawer->HandleResourceChange( aType );

        }

		PRINT( _L("Camera <= CCamBatteryPaneController::HandleResourceChange") );	        

    }

// End of file