// $Revision: 1.7 $
//------------------------------------------------------------------------------
//
// Copyright (C) 1994, 1995 Taligent, Inc. All rights reserved.
//
// Project:			StockBrowser
// File:			GraphRange.h
// Build/Version:	1.0.0
//
// Description:		TGraphRange defines a range along the axis of a graph.
//					Not intended to be subclassed.
//
//------------------------------------------------------------------------------

#ifndef TaligentSamples_GRAPHRANGE
#define TaligentSamples_GRAPHRANGE

class TGraphRange;

#ifndef Taligent_CPRIMITIVETYPES
#include <Taligent/CPrimitiveTypes.h>
#endif

class TStream;

typedef	double GraphValue;

//==============================================================================
// TGraphRange

class TGraphRange {
public:
						TGraphRange();
						TGraphRange(GraphValue min, GraphValue max);
						TGraphRange(const TGraphRange& source);
						~TGraphRange();

	TGraphRange&		operator=(const TGraphRange& source);
	TStream&			operator>>=(TStream& toStream) const;
	TStream&			operator<<=(TStream& fromStream);

	bool				operator==(const TGraphRange& other) const;

	GraphValue			GetMin() const;
	GraphValue			GetMax() const;
	void				SetMinAndMax(GraphValue min, GraphValue max);
	GraphValue			GetLength() const;
	bool				Contains(GraphValue value) const;
	bool				IsEmpty() const;	// returns true if min >= max
	
private:
	enum 				{kOriginalVersion};
	
	GraphValue			fMin;
	GraphValue			fMax;
};

#endif