--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/nga/CLIENT/scrdevextension.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,64 @@
+// 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:
+//
+
+#ifndef SCRDEVEXTENSION_H_
+#define SCRDEVEXTENSION_H_
+
+#include <graphics/displaycontrol.h>
+#include <graphics/displaymapping.h>
+#include <graphics/testscreencapture.h>
+#include <w32std.h>
+
+
+class CWsScreenDevice::CScrDevExtension : public CBase, public MDisplayControl, public MDisplayMapping, public MTestScreenCapture, public MWsClientClass
+{
+public:
+	CScrDevExtension(RWsBuffer *aBuffer,TInt32 aWsHandle);
+	~CScrDevExtension();
+//create or access the 1:1 extension instance behind the screen device
+	TInt RepeatableConstruct();
+//get a specific interface
+	void*	GetInterface(TUint aId);
+//Access pre-existing data members
+	CFbsTypefaceStore* TypefaceStore();
+	void  SetTypefaceStore(CFbsTypefaceStore*);
+//implementing MDisplayControlBase 
+	virtual TInt NumberOfResolutions() const;
+	virtual TInt GetResolutions(RArray<TResolution>& aResolutions) const;
+	virtual void GetConfiguration(TDisplayConfiguration& aConfig) const;
+	virtual TInt SetConfiguration(const TDisplayConfiguration& aConfig);
+	virtual TInt PreferredDisplayVersion() const;
+//implementing MDisplayControl
+	virtual TBool DisplayChangeEventsEnabled() const;
+	virtual void EnableDisplayChangeEvents(TBool aEnable);
+//implementing MDisplayMapping
+	virtual TInt MapCoordinates(TCoordinateSpace aSourceSpace, const TRect& aSource, TCoordinateSpace aTargetSpace, TRect& aTarget) const;
+	virtual void GetMaximumWindowExtent(TRect& aExtent) const;
+	virtual void GetMaximumSurfaceSize(TSize& aPixels, TSize& aTwips) const;
+	virtual void GetDisplayExtentOfWindow(const RWindowBase& aWindow, TRect& aExtent) const;
+//implementing MTestScreenCapture
+	virtual TInt TranslateExtent(const TRect& aInitial, TRect& aTarget) const;
+	virtual TInt GetCompositedSize(TSize& aSize) const;
+	virtual TInt ComposeScreen(const CFbsBitmap& aBitmap) const;
+private:
+	//function used by GetResolutions
+	TInt FillResolutionArray(TInt aNumOfRes, RArray<TResolution>& aResolutions) const;
+protected:
+	MWsClientClass* WriteClient() const;
+	TInt	iSupportedExtensionsBits;
+	CFbsTypefaceStore* iTypefaceStore;
+};
+
+#endif /*SCRDEVEXTENSION_H_*/