--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/commonui/inc/glxresolutionutility.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,129 @@
+/*
+* 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
+*
+*/
+
+
+
+
+#ifndef __CGLXRESOLUTIONUTILITY_H__
+#define __CGLXRESOLUTIONUTILITY_H__
+
+#include <e32cmn.h>                 // for RPointerArray
+#include <e32base.h>
+
+// forward declarations
+class MGlxResolutionChangeObserver;
+class MGlxResolutionSize;
+
+
+/**
+ * Class Description
+ * Singleton containing resolution utility methods
+ * @author Loughlin
+ */        
+NONSHARABLE_CLASS (CGlxResolutionUtility) : public CBase
+    {
+public:    
+	/**
+	 * Construction of singleton
+	 * @return A pointer to the single instance of CGlxResolutionUtility 
+	 */
+    IMPORT_C static CGlxResolutionUtility* InstanceL();
+    
+    /**
+	 * Destroys the renderer instance of CGlxResolutionUtility when the 
+	 * reference count is zero
+     */	
+    IMPORT_C void Close();
+
+    /**
+	 * Get the screen size
+	 * @return The screen size in POSS
+     */	
+    IMPORT_C TSize ScreenSize() const;
+
+    /**
+     * Get the lenght of in POSS
+     * @param The lenght in pixels which is to be converted to POSS
+     * @return The converted lenght & width in POSS
+     */
+    IMPORT_C TReal32 PixelsToPoss( const TReal32& aLenPixels ) const;
+
+    /**
+     * Get the lenght of in pixels
+     * @param The length in POSS which is to be converted to pixels
+     * @return The converted size in pixels
+     */
+    IMPORT_C TReal32 PossToPixels( const TReal32& aSzPoss ) const;
+
+    /**
+     * Add a resolution change observer
+     * @param The observer that will recieve notification on resolution 
+     *           change
+     */
+    IMPORT_C void AddObserverL( MGlxResolutionChangeObserver& aObserver );
+
+    /**
+     * Remove a resolution change observer
+     * @param The observer that will no longer recieve notification on 
+     *           resolution change
+     */
+    IMPORT_C void RemoveObserver( MGlxResolutionChangeObserver& aObserver );
+   
+public: // not exported
+
+    /**
+     * Receives notification of a change in the screen size
+     * All resolution observers are notified of the resolution change
+     * @param aScreenSize the new screen size
+     */
+    void SetScreenSizeL( TSize aScreenSize );
+    
+private: 
+
+    /**
+     * Symbian constructor - used by SingletonStore to create instance
+     */
+    static CGlxResolutionUtility* NewL();
+    
+    /**
+     * C++ constructor
+     */
+    CGlxResolutionUtility();
+    
+    /**
+     * 2 Phase ctor
+     */
+    void ConstructL();
+    /**
+     * Destructor
+     */
+    ~CGlxResolutionUtility();
+ 
+private: // class member variables
+ 
+    // Size of the screen
+    TSize iScreenSize;
+    // Screen Size aspect ratio - POSS is a unit of measurement 
+    // where 1 == the longest screen axis
+    TReal32 iOnePossToPixelRatio;
+    // The ratio of pixels to poss - stored to save on division 
+    TReal32 iPixelToPossRatio;
+    // Own: The container for the event observers
+	RPointerArray < MGlxResolutionChangeObserver > iObserverList;
+    };
+
+#endif //__CGLXRESOLUTIONUTILITY_H__