--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/appfw/viewserver/inc/VWSWEVNT.H	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,120 @@
+// Copyright (c) 1999-2009 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:
+//
+
+#ifndef __VWSWEVNT_H__
+#define __VWSWEVNT_H__
+
+#include <w32std.h>
+
+
+//
+// Forward declarations.
+//
+
+class CVwsServer;
+
+
+/**
+ * The CVwsWServEventHandler class actively monitors the window server for screen device change notifications.
+ */ 
+class CVwsWServEventHandler : public CActive
+	{
+public:
+ 	static CVwsWServEventHandler* NewL(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);
+
+	~CVwsWServEventHandler();
+	void Queue();
+private: // From CActive.
+	void RunL();
+	void DoCancel();
+	TInt RunError(TInt aError);
+private:
+	CVwsWServEventHandler(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);
+	void ConstructL();
+private:
+	CVwsServer& iServer;
+	RWsSession& iWsSession;
+	TBool		iIgnoreNextScreenDeviceChangedEvent;
+	};
+
+/**
+ * The CVwsWServRedrawer class handles redraw events for the window used by the view server to manage WSERV activity
+ * during view transistions. The window is created in front of normal applications and is put up for the duration of
+ * a view transistion. The window is transparent for ordinary view switches and opaque for screen orientation changes. 
+ */ 
+class CVwsWServRedrawer : public CActive
+	{
+public:
+	static CVwsWServRedrawer* NewL(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);
+	~CVwsWServRedrawer();
+	void SetDrawMode(TBool aOpaque);
+	void Queue();
+private: // From CActive
+	void RunL();
+	void DoCancel();
+private:
+	void HandleRedrawEvent(const TRect& aRect);
+	void ConstructL();
+	CVwsWServRedrawer(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);
+private:
+	RWsSession& iWsSession;
+	CWindowGc& iGc;
+	RWindow& iWindow;
+	TBool iOpaque;
+	};
+
+/**
+ * The CVwsWServSessionHandler class connects to the window server and manages WSERV activity.
+ * It uses an event handler to detect screen device changes for the view server and puts up a window in front of normal
+ * applications to manage activity during view transistions.
+ */ 
+class CVwsWServSessionHandler : public CBase
+	{
+public:
+	static CVwsWServSessionHandler* NewL(CVwsServer& aServer);
+	~CVwsWServSessionHandler();
+	void DisplayWindow();
+	void HideWindow();
+	void ConfigureScreenDevice();
+	TInt GetScreenMode();
+	void UpdateScreenAndDisplayWindow();
+	inline RWsSession& WsSession() const;
+	void SetWindowBackgroundColor(const TRgb& aBgColor);
+private:
+	void ConstructL();
+	void CreateWServSessionL();
+	CVwsWServSessionHandler(CVwsServer& aServer);
+
+	CVwsWServEventHandler* iWServEventHandler;
+	CVwsWServRedrawer* iWServRedrawer;
+	CVwsServer& iServer;
+	TBool iFirstDisplay;
+
+	RWsSession iWsSession;
+	CWsScreenDevice* iScreen;
+	CWindowGc* iGc;
+	RWindowGroup iRootWin;
+	RWindow* iWindow;
+	};
+
+
+//
+// Inlines
+//
+
+inline RWsSession& CVwsWServSessionHandler::WsSession() const
+	{ return((RWsSession&)iWsSession); }
+
+#endif