1 // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #ifndef __VWSWEVNT_H__

    17 #define __VWSWEVNT_H__

    18 

    19 #include <w32std.h>

    20 

    21 

    22 //

    23 // Forward declarations.

    24 //

    25 

    26 class CVwsServer;

    27 

    28 

    29 /**

    30  * The CVwsWServEventHandler class actively monitors the window server for screen device change notifications.

    31  */ 

    32 class CVwsWServEventHandler : public CActive

    33 	{

    34 public:

    35  	static CVwsWServEventHandler* NewL(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);

    36 

    37 	~CVwsWServEventHandler();

    38 	void Queue();

    39 private: // From CActive.

    40 	void RunL();

    41 	void DoCancel();

    42 	TInt RunError(TInt aError);

    43 private:

    44 	CVwsWServEventHandler(CVwsServer& aServer, RWsSession& aWsSession, TBool aIgnoreFirstScreenDeviceChangedEvent);

    45 	void ConstructL();

    46 private:

    47 	CVwsServer& iServer;

    48 	RWsSession& iWsSession;

    49 	TBool		iIgnoreNextScreenDeviceChangedEvent;

    50 	};

    51 

    52 /**

    53  * The CVwsWServRedrawer class handles redraw events for the window used by the view server to manage WSERV activity

    54  * during view transistions. The window is created in front of normal applications and is put up for the duration of

    55  * a view transistion. The window is transparent for ordinary view switches and opaque for screen orientation changes. 

    56  */ 

    57 class CVwsWServRedrawer : public CActive

    58 	{

    59 public:

    60 	static CVwsWServRedrawer* NewL(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);

    61 	~CVwsWServRedrawer();

    62 	void SetDrawMode(TBool aOpaque);

    63 	void Queue();

    64 private: // From CActive

    65 	void RunL();

    66 	void DoCancel();

    67 private:

    68 	void HandleRedrawEvent(const TRect& aRect);

    69 	void ConstructL();

    70 	CVwsWServRedrawer(RWsSession& aWsSession, CWindowGc& aGc, RWindow& aWindow);

    71 private:

    72 	RWsSession& iWsSession;

    73 	CWindowGc& iGc;

    74 	RWindow& iWindow;

    75 	TBool iOpaque;

    76 	};

    77 

    78 /**

    79  * The CVwsWServSessionHandler class connects to the window server and manages WSERV activity.

    80  * It uses an event handler to detect screen device changes for the view server and puts up a window in front of normal

    81  * applications to manage activity during view transistions.

    82  */ 

    83 class CVwsWServSessionHandler : public CBase

    84 	{

    85 public:

    86 	static CVwsWServSessionHandler* NewL(CVwsServer& aServer);

    87 	~CVwsWServSessionHandler();

    88 	void DisplayWindow();

    89 	void HideWindow();

    90 	void ConfigureScreenDevice();

    91 	TInt GetScreenMode();

    92 	void UpdateScreenAndDisplayWindow();

    93 	inline RWsSession& WsSession() const;

    94 	void SetWindowBackgroundColor(const TRgb& aBgColor);

    95 private:

    96 	void ConstructL();

    97 	void CreateWServSessionL();

    98 	CVwsWServSessionHandler(CVwsServer& aServer);

    99 

   100 	CVwsWServEventHandler* iWServEventHandler;

   101 	CVwsWServRedrawer* iWServRedrawer;

   102 	CVwsServer& iServer;

   103 	TBool iFirstDisplay;

   104 

   105 	RWsSession iWsSession;

   106 	CWsScreenDevice* iScreen;

   107 	CWindowGc* iGc;

   108 	RWindowGroup iRootWin;

   109 	RWindow* iWindow;

   110 	};

   111 

   112 

   113 //

   114 // Inlines

   115 //

   116 

   117 inline RWsSession& CVwsWServSessionHandler::WsSession() const

   118 	{ return((RWsSession&)iWsSession); }

   119 

   120 #endif