diff -r e1b950c65cb4 -r 837f303aceeb epoc32/include/icl/overlaytransformextension.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/icl/overlaytransformextension.h	Wed Mar 31 12:33:34 2010 +0100
@@ -0,0 +1,77 @@
+// 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:
+// This is Image Transform extension for Overlay/Replace transformations
+// 
+//
+
+/**
+ @file
+ @publishedAll 
+ @released
+*/
+
+#ifndef __OVERLAYTRANFORMEEXTENSION_H__
+#define __OVERLAYTRANFORMEEXTENSION_H__
+
+#include <e32base.h>
+#include <e32cmn.h>
+#include <icl/imagetransformpluginext.h>
+
+//fwd decl
+class CFbsBitmap;
+class CImageFrame;
+
+/**
+@publishedAll 
+@released
+
+Overlay/Replace Extension to the ImageTransform plugin
+
+The class provides the methods to set the overlay/replace parameters and is intended to be implemented
+by the plugins supporting the blending of the images. The client can set the overlay image, the overlay 
+position and the transparency of the overlay image. The plugin supporting this extension must use 
+the opaque_data v2 format in RSS file and also the overlay flag must be set in the opaque_data.
+The client must retrieve this extension implementation from the plugin using its extension UID.
+*/
+class COverlayTransformExtension : public CImageTransformPluginExtension
+	{
+public:
+	IMPORT_C void SetPosition(const TPoint& aPosition);
+	IMPORT_C void SetTransparencyLevelL(TUint aLevel);
+	IMPORT_C void SetOverlayFileL(const TDesC& aFilename, const TUid& aOverlayImageUid);
+	IMPORT_C void SetOverlayDataL(const TDesC8& aData, const TUid& aOverlayImageUid);
+	IMPORT_C void SetOverlayImageL(const CFbsBitmap& aBitmap);
+	IMPORT_C void SetOverlayImageL(const CImageFrame& aImageFrame);
+	IMPORT_C void SupportedOverlayInputFormatsL(RArray<TUid>& aFormats) const;
+	IMPORT_C void SupportedOverlayInputSubFormatsL(TUid aFormat, RArray<TUid>& aSubFormats) const;
+	
+protected:
+	virtual void DoSetPosition(const TPoint& aPosition) = 0;
+	virtual void DoSetTransparencyLevelL(TUint aLevel) = 0;
+	virtual void DoSetOverlayFileL(const TDesC& aFilename, const TUid& aOverlayImageUid) = 0;
+	virtual void DoSetOverlayDataL(const TDesC8& aData, const TUid& aOverlayImageUid) =0;
+	virtual void DoSetOverlayImageL(const CFbsBitmap& aBitmap) =0;
+	virtual void DoSetOverlayImageL(const CImageFrame& aImageFrame) =0;
+	virtual void DoSupportedOverlayInputFormatsL(RArray<TUid>& aFormats) const =0;
+	virtual void DoSupportedOverlayInputSubFormatsL(TUid aFormat, RArray<TUid>& aSubFormats) const = 0;
+
+private:
+	IMPORT_C virtual void ReservedVirtual5();
+
+private:	
+	// Future proofing
+	TAny* iPad;
+	};
+
+#endif // __OVERLAYTRANFORMEEXTENSION_H__