--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/commonui/src/glxresolutionutility.cpp	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,204 @@
+/*
+* Copyright (c) 2008-2009 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:    Utility class for managing the screen size
+*
+*/
+
+
+
+/**
+ * @internal reviewed 24/08/2007 by D Holland
+ */
+
+//  CLASS HEADER
+#include "glxresolutionutility.h"
+    
+//  EXTERNAL INCLUDES
+#include <AknUtils.h> // for AknLayoutUtils
+
+//  INTERNAL INCLUDES
+#include <glxsingletonstore.h>              // for singletonstore
+#include "mglxresolutionchangeobserver.h"   // for MGlxResolutionChangeObserver
+
+#include <glxpanic.h>
+
+//-----------------------------------------------------------------------------
+// CGlxResolutionUtility::InstanceL
+//-----------------------------------------------------------------------------
+//
+EXPORT_C CGlxResolutionUtility* CGlxResolutionUtility::InstanceL()
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::InstanceL");
+    CGlxResolutionUtility* self = CGlxSingletonStore::InstanceL( &NewL );
+    return self;
+    }
+
+//-----------------------------------------------------------------------------
+// CGlxResolutionUtility::Close
+//-----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxResolutionUtility::Close()
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::Close");
+    CGlxSingletonStore::Close( this );
+    }
+
+//-----------------------------------------------------------------------------
+// ScreenSize
+//-----------------------------------------------------------------------------
+//
+EXPORT_C TSize CGlxResolutionUtility::ScreenSize() const
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::ScreenSize");
+    return iScreenSize;
+    }
+
+//-----------------------------------------------------------------------------
+// PixelsToPoss
+//-----------------------------------------------------------------------------
+//
+EXPORT_C TReal32 CGlxResolutionUtility::PixelsToPoss(
+    const TReal32& aPixelLen ) const
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::PixelsToPoss");    
+    // Screen   = 240 : 320  
+    // POSS     = .75 : 1
+    // aPixelLen= 240
+    // retVal   = .75
+    return aPixelLen * iPixelToPossRatio;
+    }
+
+//-----------------------------------------------------------------------------
+// PossToPixels
+//-----------------------------------------------------------------------------
+//
+EXPORT_C TReal32 CGlxResolutionUtility::PossToPixels(
+    const TReal32& aPossLen ) const
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::PossToPixels");    
+    // Screen   = 240 : 320  
+    // POSS     = .75 : 1
+    // aLenPoss = .75
+    // retVal   = 240
+    return aPossLen * iOnePossToPixelRatio;
+    }
+
+
+
+//-----------------------------------------------------------------------------
+// AddObserverL.
+//-----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxResolutionUtility::AddObserverL( 
+                                    MGlxResolutionChangeObserver& aObserver )
+	{
+    GLX_LOG_INFO( "CGlxResolutionUtility::AddObserverL" );
+    if( KErrNotFound == iObserverList.Find( &aObserver ) )
+        {
+    	iObserverList.AppendL( &aObserver );
+        }
+	}
+	
+	
+    
+//-----------------------------------------------------------------------------
+// RemoveObserver
+//-----------------------------------------------------------------------------
+//
+EXPORT_C void CGlxResolutionUtility::RemoveObserver(
+                                MGlxResolutionChangeObserver& aObserver )
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::RemoveObserver");    
+    
+    TInt index = iObserverList.Find( &aObserver );
+    if ( KErrNotFound != index )
+        {
+        iObserverList.Remove( index );
+        }
+    }
+	
+//-----------------------------------------------------------------------------
+// HandleScreenSizeChanged
+//-----------------------------------------------------------------------------
+//	
+void CGlxResolutionUtility::SetScreenSizeL( TSize aScreenSize )
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::HandleScreenSizeChanged");    
+
+    if( iScreenSize != aScreenSize )
+        {
+        // "Percentage Of Screen Size". A unit of measurement, in which 1.0
+        // is as long as the longer edge of the screen.
+    	iOnePossToPixelRatio = 
+    	    ( aScreenSize.iHeight > aScreenSize.iWidth ) ?
+    	        aScreenSize.iHeight : aScreenSize.iWidth;
+    	// calculate the multiplier
+        iPixelToPossRatio = 1.0 / iOnePossToPixelRatio; 
+        iScreenSize = aScreenSize;
+
+        // Notify observers of a change in the screen resolution
+        TInt ii = iObserverList.Count();
+        while ( ii-- > 0 )
+            {
+            iObserverList[ ii ]->HandleResolutionChangedL();
+            }
+        }
+    }
+
+//-----------------------------------------------------------------------------
+// NewL
+//-----------------------------------------------------------------------------
+//	
+CGlxResolutionUtility* CGlxResolutionUtility::NewL()
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::NewL");    
+    CGlxResolutionUtility* self = new( ELeave ) CGlxResolutionUtility;
+    self->ConstructL();
+    return self;	
+    }
+
+//-----------------------------------------------------------------------------
+// ~CGlxResolutionUtility
+//-----------------------------------------------------------------------------
+//	
+CGlxResolutionUtility::CGlxResolutionUtility()
+    {
+    // Do Nothing
+    }
+    
+//-----------------------------------------------------------------------------
+// ConstructL
+//-----------------------------------------------------------------------------
+//  
+void CGlxResolutionUtility::ConstructL()
+    {
+    // set the initial screen size
+    // ask avkon for the full screen size
+    TRect screen;
+    AknLayoutUtils::LayoutMetricsRect( AknLayoutUtils::EScreen, screen ); 
+    // set the initial size
+    SetScreenSizeL( screen.Size() );
+    }
+
+
+//-----------------------------------------------------------------------------
+// ~CGlxResolutionUtility
+//-----------------------------------------------------------------------------
+//	
+CGlxResolutionUtility::~CGlxResolutionUtility()	
+    {
+    GLX_LOG_INFO("CGlxResolutionUtility::~CGlxResolutionUtility");    
+   	// Close the observer array 
+	iObserverList.Close();
+    }