#pragma once

#ifndef		_EANBARCODE_H_
#define		_EANBARCODE_H_

//////////////////////////////////////////////////
//												//
//	http://www.barcodeisland.com/ean13.phtml	//
//												//
//////////////////////////////////////////////////

#define		MAX_BARCODE_LENGTH		13

//	binary representation of numbers in EAN
extern char* szEANs [10];

class CEANBarCode
{
protected:
	//	data

	//	the code
	char m_szCode[MAX_BARCODE_LENGTH+1];

protected:
	//	methods

	// Check the validity of a the code
	bool CheckCode(void);

	// Get a Number in the code by its position
	int GetAt(int Position);

	// Gets the binary string representing the left part of the code when even parity
	CString GetLeftEven(int Digit);

	// Gets the binary string representing the right part of the code
	CString GetRight(int Digit);

	// Gets the binary string representing the left part of the code when odd parity
	CString GetLeftOdd(int Digit);

public:
	//	Accessors

	void SetCode(CString Code);
	CString GetCode();

public:
	//	operations

	//	Draws the code using the specified DC and the rectangle
	void Draw(CPaintDC &dc);

public:
	CEANBarCode(void);
	~CEANBarCode(void);

private:
	//	reverse a String
	void ReverseString(CString &str);
};

#endif