--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/photosgallery/viewframework/tvout/inc/glxtv.h	Thu Dec 17 08:45:44 2009 +0200
@@ -0,0 +1,181 @@
+/*
+* 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:    Handles & propogates UI state change notifications.
+*
+*/
+
+
+
+/**
+ * @internal reviewed 24/08/2007 by D Holland
+ */
+
+#ifndef __GLXTV_H__
+#define __GLXTV_H__
+
+// External Includes
+#include <e32def.h>
+#include <e32base.h>
+
+// Internal Includes
+#include <glxtvconstants.h>
+
+// Forward Declarations
+class MGlxTvObserver;
+class CGlxWindowVisibilityMonitor;
+class CGlxTvConnectionMonitor;
+class CRepository;
+
+// For window server visibility notifications 
+class MGlxWindowVisibilityObserver
+    {
+public:
+    /**
+     * Handle changes to the application window visiblity
+     * Called when window visible state changes
+     * @param aChangeType The visibility change type
+     */
+    virtual void HandleWindowVisibilityChangedL( TTvChangeType aChangeType ) = 0;
+    };
+        
+        
+        
+// For Tv connection notification
+class MGlxTvConnectionObserver
+    {
+public:
+    /**
+     * Handle TV connection state changes
+     */
+    virtual void HandleTvConnectionStatusChangedL( ) = 0;
+    };
+        
+        
+        
+        
+/**
+ * Class Description
+ * A class that handles and propagates UI change notifications
+ * @author Loughlin
+ */        
+NONSHARABLE_CLASS (CGlxTv) : public CBase,
+                             public MGlxWindowVisibilityObserver,
+                             public MGlxTvConnectionObserver
+    {
+public:
+    /**
+     * Static Symbian 2 stage constructor.
+     * @param a TvObserver
+     */
+    IMPORT_C static CGlxTv* NewL( MGlxTvObserver& aTvObserver );
+    
+    /**
+     * Destructor.
+     */
+    IMPORT_C ~CGlxTv();
+    
+private:
+
+    /**
+     * Standard C++ constructor
+     * @param a TvObserver     
+     */
+    CGlxTv(MGlxTvObserver& aTvObserver);
+    
+    /*
+     * Symbian second stage construction
+     */
+    void ConstructL(); 
+   
+public: // class public method   
+   
+    /**
+     * Get the current screen size
+     * @return the Screen size in pixels
+     */
+    IMPORT_C TSize ScreenSizeL() const;
+   
+    /**
+     * Is the TV Connected
+     * @return ETrue if active, otherwise EFalse
+     */
+    IMPORT_C TBool IsConnected() const; 
+    
+    /**
+     * Is the TV widescreen
+     * @return ETrue if widescreen, otherwise EFalse
+     */
+    IMPORT_C TBool IsWidescreen() const; 
+    
+    
+public: // from MGlxWindowVisibilityObserver
+    /**
+     * @ref MGlxWindowVisibilityObserver::HandleWindowVisibilityChangedL
+     */
+    void HandleWindowVisibilityChangedL( TTvChangeType aChangeType );
+    
+                                
+public: // from MGlxTvConnectionObserver
+    /**
+     * @ref MGlxTvConnectionObserver::HandleTvConnectionStatusChangedL
+     */
+    void HandleTvConnectionStatusChangedL( );
+    
+private: // new private methods
+    /**
+     * Retrive the TV Display Aspect Ratio and TV Setting
+     * Calculate the screen size from aspect ratio and TV type
+     */    
+    void CalcTvScreenSzL();
+
+    /**
+     * Start monitoring the environment for changes to the TV aspect ratio
+     * and the Gallery window groups visiblity 
+     */        
+    void MonitorEnvironmentL();
+
+    /**
+     * Stop monitoring the environment for changes to the TV aspect ratio
+     * and the Gallery window groups visiblity 
+     */      
+    void StopMonitoringEnvironment();
+    
+private: // class member data    
+    // Not Owned: The TV out observer 
+    MGlxTvObserver& iTvObserver;
+
+    // Owned: The Window visibility monitor
+    CGlxWindowVisibilityMonitor* iWindowVisibilityMonitor;
+
+    // Owned: The TV connection monitor
+    CGlxTvConnectionMonitor* iTvConnectionMonitor;
+ 
+    // Size of the TV Out display size
+    TSize iSzInPixels;
+    
+    // Owned: The central repository where TV display ratio is held.
+    CRepository* iCenRep;
+    
+     // The implementation of the class, hidden from clients
+	class CGlxTvOutCenRepMonitor;
+	
+	// Owned: Monitoring class for Tv Ratio Values
+	CGlxTvOutCenRepMonitor* iTvDisplayAspectRatioMonitor; 
+	
+	// The TV aspect ratio
+	TInt iAspectRatio;
+    };
+    
+    
+#endif // __GLXTV_H__
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