--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/swsrc/swdirectgdiellipse.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,84 @@
+// 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 SWDIRECTGDIELLIPSE_H_
+#define SWDIRECTGDIELLIPSE_H_
+
+/**
+@file
+@internalComponent
+*/
+
+#include <e32std.h>
+#include <gdi.h>
+
+/**
+A utility class to efficiently draw and fill ellipses
+*/
+class TSwDirectGdiEllipse
+	{
+public:
+	/**	
+	Enumeration for the ellipse production life cycle
+	*/
+	enum TEllipseStatus
+		{
+		/**
+		Ellipse has been initialised but has no area
+		*/
+		EInitialised,
+		/**
+		The ellipse is drawn as two parabolas. These are in two sectors, the top and bottom
+		half of the rectangle. The first sector means the top parabola has been produced.
+		*/
+		EFirstSector,
+		/**
+		The parabola that occupies the bottom half of the rectangle has been produced. 
+		*/
+		ESecondSector,
+		/**
+		The ellipse is complete
+		*/
+		EComplete,
+		/**
+		The ellipse has either a height or width of two units or less
+		and so takes the appearance of a line
+		*/
+		ELine
+		};
+public:
+	void Construct(const TRect& aRect);
+	TBool SingleStep(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);
+	TBool NextStep(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);
+	TPoint Intersection(const TRect& aRect,const TPoint& aPoint);
+protected:
+	TBool Output(TPoint& aTopLeft,TPoint& aTopRight,TPoint& aBottomLeft,TPoint& aBottomRight);
+protected:
+	TEllipseStatus iStatus;
+	TInt iA;
+	TInt iB;
+	TInt64 iASquared;
+	TInt64 iBSquared;
+	TInt64 iASquBSqu;
+	TInt iX;
+	TInt iY;
+	TInt iXAdj;
+	TInt iYAdj;
+	TPoint iOffset;
+	TInt64 iD1;
+	TInt64 iD2;
+	};
+
+#endif /*SWDIRECTGDIELLIPSE_H_*/