diff -r ea65f74e6de4 -r 8e5f6eea9c9f tvout/tvoutengine/inc/glxwindowvisibilitymonitor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tvout/tvoutengine/inc/glxwindowvisibilitymonitor.h	Tue Aug 31 15:14:51 2010 +0300
@@ -0,0 +1,95 @@
+/*
+* 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:    Class definition that monitors tv window visibility
+*
+*/
+
+
+#ifndef __GLXWINVISIBILITYMONITOR_H__
+#define __GLXWINVISIBILITYMONITOR_H__
+
+// External Includes
+#include <e32base.h>                // for CBase
+#include <AknWsEventObserver.h>     // for MAknWsEventObserver
+
+
+// Forward Declarations
+class MGlxWindowVisibilityObserver;       
+
+
+/**
+ * Class Description
+ * An Active object derived class is used to monitor the visibility of the
+ * TV out window.
+ */        
+NONSHARABLE_CLASS(CGlxWindowVisibilityMonitor) : public CBase, 
+                                                 public MAknWsEventObserver
+    {
+public:
+    /**
+     * Static Symbian 2 stage constructor.
+     */
+    static CGlxWindowVisibilityMonitor* NewL(
+                            MGlxWindowVisibilityObserver& aVisibilityObserver );
+    
+    /**
+     * Destructor.
+     */
+    ~CGlxWindowVisibilityMonitor();
+    
+    
+    /**
+     * Close.
+     */
+    void Close();
+    
+private:
+
+    /**
+     * Standard C++ constructor
+     */
+    CGlxWindowVisibilityMonitor( 
+                        MGlxWindowVisibilityObserver& aVisibilityObserver );
+    
+    /*
+     * Symbian second stage construction
+     */
+    void ConstructL(); 
+
+public: /// class member functions
+
+    /**
+     * Provides the caller with the current visible state
+     * @return ETrue if the window is visible or false otherwise
+     */
+    TBool IsVisible() const;
+
+public: // from MAknWsEventObserver
+
+    void HandleWsEventL( const TWsEvent& aEvent, CCoeControl* aDestination );     
+
+private: /// class member data
+    /// Not ownded: The Akn event monitor
+    CAknWsEventMonitor* iAknEventMonitor;
+    
+    /// Not owned: Window visibility observer
+    MGlxWindowVisibilityObserver& iVisibilityObserver;
+
+    /// The visible state 
+    TBool iIsVisible; 
+    };
+       
+
+
+#endif //  __GLXWINVISIBILITYMONITOR_H__