uifw/AvKon/src/aknbatterydataobserver.cpp
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     1 /*
       
     2 * Copyright (c) 2006,2007 Nokia Corporation and/or its subsidiary(-ies).
       
     3 * All rights reserved.
       
     4 * This component and the accompanying materials are made available
       
     5 * under the terms of "Eclipse Public License v1.0"
       
     6 * which accompanies this distribution, and is available
       
     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8 *
       
     9 * Initial Contributors:
       
    10 * Nokia Corporation - initial contribution.
       
    11 *
       
    12 * Contributors:
       
    13 *
       
    14 * Description:  This internal Avkon class updates the battery indicator 
       
    15 *                control in status pane.
       
    16 *
       
    17 */
       
    18 
       
    19 
       
    20 // INCLUDE FILES
       
    21 #include "aknbatterydataobserver.h"
       
    22 #include "aknstatuspanedata.h"
       
    23 #include "AknBattery.h"
       
    24 #include "AknBatteryStrength.h"
       
    25 
       
    26 #include "aknstatuspanedatasubscriber.h"
       
    27 #include <eikspane.h>
       
    28 #include <avkon.hrh>
       
    29 #include <eikapp.h>
       
    30 #include <eikappui.h>
       
    31 
       
    32 
       
    33 // ============================ MEMBER FUNCTIONS ===============================
       
    34 
       
    35 // -----------------------------------------------------------------------------
       
    36 // CAknBatteryDataObserver::CAknBatteryDataObserver
       
    37 // C++ default constructor can NOT contain any code, that
       
    38 // might leave.
       
    39 // -----------------------------------------------------------------------------
       
    40 //
       
    41 CAknBatteryDataObserver::CAknBatteryDataObserver(
       
    42     CAknBatteryPane* aBatteryPane )
       
    43 	{
       
    44 	iBatteryPane = aBatteryPane;
       
    45 	iBatteryPane->MopGetObject( iDataSubscriber );
       
    46 	if ( iDataSubscriber )
       
    47 		{
       
    48 		iDataSubscriber->AddObserver( this ); 
       
    49 		}
       
    50     }
       
    51 
       
    52 
       
    53 // -----------------------------------------------------------------------------
       
    54 // Destructor.
       
    55 // -----------------------------------------------------------------------------
       
    56 //
       
    57 CAknBatteryDataObserver::~CAknBatteryDataObserver()
       
    58 	{
       
    59 	if ( iDataSubscriber )
       
    60 		{
       
    61 		iDataSubscriber->RemoveObserver( this ); 
       
    62 		}
       
    63   }
       
    64 
       
    65 
       
    66 // -----------------------------------------------------------------------------
       
    67 // CAknBatteryDataObserver::HandleUpdateL
       
    68 // Updates UI control state.    
       
    69 // -----------------------------------------------------------------------------
       
    70 //
       
    71 void CAknBatteryDataObserver::HandleUpdateL(
       
    72     const TAknStatusPaneStateData& aData )
       
    73 	{
       
    74 	if ( !iDataSubscriber )
       
    75 	    {
       
    76 		return;
       
    77 	    }
       
    78 		   	
       
    79 	// If this pane is not in current layout, no update. Update happens when 
       
    80 	// status pane layout is changed.
       
    81     CEikStatusPaneBase* statusPane = CEikStatusPaneBase::Current();
       
    82    	if ( !statusPane || 
       
    83    		 !statusPane->PaneCapabilities(
       
    84    		    TUid::Uid( EEikStatusPaneUidBattery ) ).IsInCurrentLayout() )
       
    85    		{
       
    86 		return;
       
    87    		}
       
    88    	
       
    89     TAknBatteryState state = aData.iBatteryState;		
       
    90 	TBool levelChanged     = EFalse;
       
    91 	TBool rechargeChanged  = EFalse;
       
    92 	TBool iconChanged      = EFalse;
       
    93    	
       
    94    	// Animation is not shown in the background unless update level has been 
       
    95    	// set above ERefreshLevelMedium.
       
    96     TBool updateAnimation = 
       
    97         ( !iDataSubscriber->IsBackground() ||     	
       
    98     	  iDataSubscriber->RefreshLevel() > CAknStatusPaneDataSubscriber::ERefreshLevelMedium );
       
    99 	
       
   100 	if ( iBatteryPane->BatteryState() != state.iIconState )
       
   101 	    {
       
   102 	    iBatteryPane->SetBatteryStateL( state.iIconState );
       
   103 	    iconChanged = ETrue;
       
   104 	    }
       
   105 			
       
   106 	if ( iBatteryPane->BatteryLevel() != state.iBatteryStrength )
       
   107 		{
       
   108 		iBatteryPane->SetBatteryLevel( state.iBatteryStrength );
       
   109 		levelChanged = ETrue;		
       
   110 		}
       
   111 		
       
   112 	if ( updateAnimation )
       
   113 		{
       
   114 		if ( iBatteryPane->Recharging() != state.iRecharging )
       
   115 			{
       
   116 			iBatteryPane->SetRecharge( state.iRecharging );										
       
   117 			rechargeChanged = ETrue;
       
   118 			}
       
   119 		}
       
   120 	else
       
   121 		{
       
   122 		if ( iBatteryPane->Recharging() != EFalse )
       
   123 			{
       
   124 			iBatteryPane->SetRecharge( EFalse );
       
   125 			rechargeChanged = ETrue;
       
   126 			}
       
   127 		}
       
   128 
       
   129 	if ( levelChanged || rechargeChanged || iconChanged )
       
   130 		{
       
   131 		iBatteryPane->DrawDeferred();	
       
   132 		}
       
   133 	}
       
   134 
       
   135 //  End of File