--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/camerauis/cameraapp/generic/src/CamZoomUpdateManager.cpp	Wed Sep 01 12:30:54 2010 +0100
@@ -0,0 +1,218 @@
+/*
+* Copyright (c) 2003-2009 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:  ????????????????
+*
+*/
+
+
+
+//INCLUDES
+#include "CamZoomUpdateManager.h"
+#include "CamUtility.h"
+#include "CameraUiConfigManager.h"
+
+
+
+//MACROS
+
+// Cooldown period inbetween camera driver updates
+const TInt KCamZoomCooldown    = 200000;  // .2  seconds
+const TInt KCamMaxZoomCooldown = 250000;  // .25 seconds
+
+
+// ====================== MEMBER FUNCTIONS =====================
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::NewL
+// Two-phased constructor.
+// -----------------------------------------------------------------------------
+//
+CCamZoomUpdateManager* CCamZoomUpdateManager::NewL( CCamAppController& aController )
+    {
+    PRINT((_L("CCamZoomUpdateManager::NewL in")));
+    CCamZoomUpdateManager* self = new(ELeave) CCamZoomUpdateManager( aController );
+    CleanupStack::PushL(self);
+    self->ConstructL ();
+    CleanupStack::Pop();
+    PRINT((_L("CCamZoomUpdateManager::NewL out")));
+    return self;
+    }
+
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::CCamZoomUpdateManager
+// C++ default constructor can NOT contain any code, that
+// might leave.
+// -----------------------------------------------------------------------------
+//
+CCamZoomUpdateManager::CCamZoomUpdateManager( CCamAppController& aController ) :
+        CActive( /*EPriorityStandard*/ EPriorityUserInput ),
+        iController( aController )
+    {
+    iDelayedUpdate = EFalse;
+    }
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::~CCamZoomUpdateManager
+// Destructor.
+// -----------------------------------------------------------------------------
+//
+
+CCamZoomUpdateManager::~CCamZoomUpdateManager()
+{
+    PRINT((_L("CCamZoomUpdateManager::~CCamZoomUpdateManager() in")));
+    Cancel();
+    iTimer.Close();
+    PRINT((_L("CCamZoomUpdateManager::~CCamZoomUpdateManager() out")));
+}
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateTimer::ConstructL
+// Symbian 2nd phase constructor.
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::ConstructL()
+    {
+    PRINT((_L("CCamZoomUpdateManager::ConstructL() in")));
+    TRAPD( err, ReadDelayValuesL() );
+    if( err )
+        {
+        PRINT((_L("CCamZoomUpdateManager::ConstructL() error in reading delay values")));
+        }
+    User::LeaveIfError(iTimer.CreateLocal());
+    CActiveScheduler::Add(this);
+    PRINT((_L("CCamZoomUpdateManager::ConstructL() out")));
+    }
+    
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::SetZoomValue
+// 
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::SetZoomValue( TInt aValue )
+    {
+    PRINT((_L("CCamZoomUpdateManager::SetZoomValue() => in")));
+    
+    // PUT IN MUTEX????
+    
+    // update value
+    iValue = aValue;
+    
+    if ( IsActive() )
+        {
+        // check for starvation
+        TTime current;
+        current.UniversalTime();
+        TInt64 delay = current.MicroSecondsFrom(iCooldownStart).Int64();
+        
+        if ( delay > iCamMaxZoomCooldown )
+            {
+            PRINT((_L("CCamZoomUpdateManager::SetZoomValue() <> IsActive, starved")));
+            
+            // force update if active object is starved
+            Cancel();
+            UpdateAndStartWait();
+            }
+        else
+            {
+            PRINT((_L("CCamZoomUpdateManager::SetZoomValue() <> IsActive, updating iValue")));
+            
+            // set the delayed update flag and wait
+            iDelayedUpdate = ETrue;    
+            }
+        }
+    else
+        {
+        PRINT((_L("CCamZoomUpdateManager::SetZoomValue() <> IsNotActive, setting zoom")));
+        
+        // notify controller and set active
+        UpdateAndStartWait();
+        }
+    
+    PRINT((_L("CCamZoomUpdateManager::SetZoomValue() <= out")));
+    }
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::UpdateAndStartWait
+// 
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::UpdateAndStartWait()
+    {
+    // update cooldown start time
+    iCooldownStart.UniversalTime();
+    
+    // reset delayed update flag
+    iDelayedUpdate = EFalse;
+    
+    // notify iController
+    iController.SetZoomValue( iValue );
+        
+    // activate cooldown period
+    SetActive();
+    iTimer.After( iStatus, iCamZoomCooldown );
+    }
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::RunL
+// 
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::RunL()
+    {
+    PRINT((_L("CCamZoomUpdateManager::RunL() in")));
+    
+    //PUT IN MUTEX??
+    
+    if ( iDelayedUpdate )
+        {
+        // notify controller and set active
+        UpdateAndStartWait();
+        }
+     
+    PRINT((_L("CCamZoomUpdateManager::RunL() out")));
+    }
+
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::DoCancel
+// Cancels the timer
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::DoCancel()
+    {
+    PRINT((_L("CCamZoomUpdateManager::DoCancel() in")));
+    // cancel the timer
+    iTimer.Cancel();
+    PRINT((_L("CCamZoomUpdateManager::DoCancel() out")));
+    }
+    
+// -----------------------------------------------------------------------------
+// CCamZoomUpdateManager::ReadDelayValuesL
+// Gets delay values from cenrep
+// -----------------------------------------------------------------------------
+//
+void CCamZoomUpdateManager::ReadDelayValuesL()
+    {
+    // default values are used in case of error
+    iCamZoomCooldown = KCamZoomCooldown;
+    iCamMaxZoomCooldown = KCamMaxZoomCooldown;
+    RArray<TInt> delayValues;
+    if( iController.UiConfigManagerPtr() )
+        {
+        iController.UiConfigManagerPtr()->SupportedZoomDelaysL( delayValues );
+        iCamZoomCooldown = delayValues[0]*1000;
+        iCamMaxZoomCooldown = delayValues[1]*1000;
+        }
+    }
+// End of File