--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/inc/directgdiextensioninterfaces.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,104 @@
+// Copyright (c) 2007-2009 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 DIRECTGDIEXTENSIONINTERFACES_H
+#define DIRECTGDIEXTENSIONINTERFACES_H
+
+#include <e32cmn.h>
+#include <gdi.h>
+
+/**
+An interface used for testing the VGImage cache in the VG DirectGDI adaptation.
+
+@internalTechnology
+*/
+class MVgImageCache
+	{
+public:
+	virtual TBool IsInCache(TInt64 aSerialNumberList) = 0;
+	virtual TInt TouchCount(TInt64 aSerialNumberList) = 0;
+	virtual TInt NumEntries() const = 0;
+	virtual void GetOrderedCacheEntries(TInt64& aSerialNumberList, TInt aListSize) = 0;
+	virtual TInt CacheSizeInBytes() const = 0;
+	virtual TInt MaxCacheSize() const = 0;
+	virtual void ResetCache() = 0;
+	};
+
+const TUint32 KDirectGdiVgImageCacheUid = 0x10285A74;
+
+/**
+An interface for retrieving images from the storage and obtaining various glyph cache parameters . 
+Many functions are intended to be used by test code only to exersize glyph image cache implementation. 
+
+@internalTechnology
+*/
+class MFontGlyphImageStorage
+	{
+public:
+	virtual TInt GlyphImage(TUint32 aFontId, TChar aGlyphCode, TGlyphBitmapType aGlyphBitmapType, 
+						const TUint8* aGlyphImage, const TSize& aGlyphImageSize, 
+						TAny* aImageForeground, TAny* aImageShadow, TAny* aImageOutline) = 0;
+	//for test purpose
+	//current glyph cache size in bytes
+	virtual TInt GlyphCacheSize() const = 0;
+	//max glyph cache size in bytes
+	virtual TInt MaxGlyphCacheSize() const = 0;
+	//mainly for OOM testing
+	//delete all VG Images from the cache
+	virtual void CleanGlyphImageCache() = 0;
+	//Fills aFontListId parameter with font Id in order from most to least usable. 
+	virtual TInt FontIdInOrder(RArray<TUint32> & aFontListId) const = 0;
+	//Enforce to emulate OOM condition. The system will use pre-allocated buffers.
+	virtual void EnforceOOMFailure(TBool aEnforce) = 0;
+	};
+
+const TUint32 KDirectGdiGetGlyphStorageUid = 0x10285A75;
+
+/**
+Interface intended for implementation by CDirectGdiDriverInternal to allow clients 
+control over the maximum sizes used by an image cache and a glyph cache.
+ 
+@internalTechnology
+ */
+class MDirectGdiDriverCacheSize
+	{
+public:
+	/** Sets the maximum size of the image cache used by the driver 
+	implementation.
+	@param aSize The maximum size in bytes that the image cache should use.
+	@return KErrNone if the maximum cache size was set successfully, 
+	KErrNotSupported if this method is not supported.
+	 */
+	virtual TInt SetMaxImageCacheSize(TInt aSize) = 0;
+	/** Gets the maximum size of the driver's image cache.
+	@return The current maximum size in bytes of the driver's image cache.
+	 */
+	virtual TInt MaxImageCacheSize() const = 0;
+	/** Sets the maximum size of the glyph cache used by the driver
+	implementation.
+	@param aSize The maximum size in bytes that the glyph cache should use.
+	@return KErrNone if the maximum cache size was set successfully, 
+	KErrNotSupported if this method is not supported.
+	 */
+	virtual TInt SetMaxGlyphCacheSize(TInt aSize) = 0;
+	/** Gets the maximum size of the driver's glyph cache.
+	@return The current maximum size in bytes of the driver's glyph cache.
+	 */
+	virtual TInt MaxGlyphCacheSize() const = 0;
+	};
+
+const TUint32 KDirectGdiDriverCacheSizeUid = 0x10286A32;
+
+#endif /*DIRECTGDIEXTENSIONINTERFACES_H*/