// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).+
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// All rights reserved.+
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// This component and the accompanying materials are made available+
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// under the terms of "Eclipse Public License v1.0"+
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// which accompanies this distribution, and is available+
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".+
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//+
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// Initial Contributors:+
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// Nokia Corporation - initial contribution.+
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//+
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// Contributors:+
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//+
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// Description:+
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//+
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+
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#ifndef __VWSWEVNT_H__+
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#define __VWSWEVNT_H__+
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+
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#include <w32std.h>+
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+
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+
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//+
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// Forward declarations.+
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//+
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+
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class CVwsServer;+
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+
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+
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/**+
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 * The CVwsWServEventHandler class actively monitors the window server for screen device change notifications.+
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 */ +
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class CVwsWServEventHandler : public CActive+
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	{+
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public:+
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 	static CVwsWServEventHandler* NewL(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);+
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+
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	~CVwsWServEventHandler();+
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	void Queue();+
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private: // From CActive.+
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	void RunL();+
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	void DoCancel();+
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	TInt RunError(TInt aError);+
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private:+
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	CVwsWServEventHandler(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);+
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	void ConstructL();+
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private:+
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	CVwsServer& iServer;+
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	RWsSession& iWsSession;+
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	TBool		iIgnoreNextScreenDeviceChangedEvent;+
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	};+
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+
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/**+
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 * The CVwsWServRedrawer class handles redraw events for the window used by the view server to manage WSERV activity+
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 * during view transistions. The window is created in front of normal applications and is put up for the duration of+
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 * a view transistion. The window is transparent for ordinary view switches and opaque for screen orientation changes. +
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 */ +
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class CVwsWServRedrawer : public CActive+
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	{+
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public:+
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	static CVwsWServRedrawer* NewL(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);+
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	~CVwsWServRedrawer();+
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	void SetDrawMode(TBool aOpaque);+
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	void Queue();+
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private: // From CActive+
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	void RunL();+
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	void DoCancel();+
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private:+
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	void HandleRedrawEvent(const TRect& aRect);+
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	void ConstructL();+
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	CVwsWServRedrawer(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);+
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private:+
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	RWsSession& iWsSession;+
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	CWindowGc& iGc;+
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	RWindow& iWindow;+
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	TBool iOpaque;+
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	};+
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+
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/**+
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 * The CVwsWServSessionHandler class connects to the window server and manages WSERV activity.+
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 * It uses an event handler to detect screen device changes for the view server and puts up a window in front of normal+
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 * applications to manage activity during view transistions.+
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 */ +
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class CVwsWServSessionHandler : public CBase+
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	{+
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public:+
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	static CVwsWServSessionHandler* NewL(CVwsServer& aServer);+
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	~CVwsWServSessionHandler();+
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	void DisplayWindow();+
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	void HideWindow();+
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	void ConfigureScreenDevice();+
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	TInt GetScreenMode();+
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	void UpdateScreenAndDisplayWindow();+
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	inline RWsSession& WsSession() const;+
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	void SetWindowBackgroundColor(const TRgb& aBgColor);+
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private:+
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	void ConstructL();+
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	void CreateWServSessionL();+
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	CVwsWServSessionHandler(CVwsServer& aServer);+
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+
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	CVwsWServEventHandler* iWServEventHandler;+
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	CVwsWServRedrawer* iWServRedrawer;+
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	CVwsServer& iServer;+
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	TBool iFirstDisplay;+
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+
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	RWsSession iWsSession;+
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	CWsScreenDevice* iScreen;+
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	CWindowGc* iGc;+
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	RWindowGroup iRootWin;+
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	RWindow* iWindow;+
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	};+
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+
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+
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//+
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// Inlines+
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//+
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+
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inline RWsSession& CVwsWServSessionHandler::WsSession() const+
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	{ return((RWsSession&)iWsSession); }+
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+
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#endif+
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