windowing/windowserver/nonnga/SERVER/backedupwindow.h
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     1 // Copyright (c) 2006-2009 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 // CWsWindowRedraw and associated classes definitions
       
    15 // 
       
    16 //
       
    17 
       
    18 #ifndef __BACKEDUPWINDOW_H__
       
    19 #define __BACKEDUPWINDOW_H__
       
    20 
       
    21 #include "wnredraw.h"
       
    22 #include "window.h"
       
    23 
       
    24 class CWsBackedUpWindow : public CWsWindowRedraw
       
    25 	{
       
    26 public:
       
    27 	static void StaticInitL();
       
    28 	static void StaticDestroy();
       
    29 public:
       
    30 	CWsBackedUpWindow(CWsWindow *aWin, TDisplayMode aDisplayMode);
       
    31 	void ConstructL();
       
    32 	~CWsBackedUpWindow();
       
    33 	TBool CommandL(TInt aOpcode, TWsWinCmdUnion &aCmd);
       
    34 	void Resize(const TSize &aSize, const TSize &aOldSize);
       
    35 	inline TDisplayMode DisplayMode() const;
       
    36 	void PrepareForResizeL(const TSize &aSize, TSize &aOldSize);
       
    37 	void DrawWindow();
       
    38 	virtual CFbsDevice* OutputDevice() const;
       
    39 	virtual TBool DrawCommand(CWsGc*,const TAny*);
       
    40 	
       
    41 private:
       
    42 	void ActivateGc();
       
    43 	void SetSizeInTwips();
       
    44 	
       
    45 	//from CWsWindowRedraw
       
    46 	TRgb BackColor() const;
       
    47 	TBool NeedsRedraw() const;
       
    48 	TBool GetRedrawRect(TRect &aRect) const;
       
    49 	CWsBackedUpWindow *Backup() const;
       
    50 	void Scroll(const TRect &aClipRect, const TPoint &aOffset,const TRect &aRect);
       
    51 	
       
    52 private:
       
    53 	static CFbsBitGc *iBitGc;
       
    54 	TBool iGcActive;
       
    55 	CFbsBitmapDevice *iBitmapDevice;
       
    56 	CFbsBitmap *iBitmap;
       
    57 	TDisplayMode iDisplayMode;
       
    58 	};
       
    59 
       
    60 inline TDisplayMode CWsBackedUpWindow::DisplayMode() const
       
    61 	{
       
    62 	return iDisplayMode;
       
    63 	}
       
    64 
       
    65 #endif