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| using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
namespace CodeBarre13.CodeBarre13
{
class CodeBarre13
{
#region Static initialization
static Dictionary<int, Pattern> codes = new Dictionary<int, Pattern>();
static Dictionary<int, Parity> parity = new Dictionary<int, Parity>();
static CodeBarre13()
{
// # LEFT ODD LEFT EVEN RIGHT
AddCode(0, "0001101", "0100111", "1110010");
AddCode(1, "0011001", "0110011", "1100110");
AddCode(2, "0010011", "0011011", "1101100");
AddCode(3, "0111101", "0100001", "1000010");
AddCode(4, "0100011", "0011101", "1011100");
AddCode(5, "0110001", "0111001", "1001110");
AddCode(6, "0101111", "0000101", "1010000");
AddCode(7, "0111011", "0010001", "1000100");
AddCode(8, "0110111", "0001001", "1001000");
AddCode(9, "0001011", "0010111", "1110100");
AddParity(0, "ooooo");
AddParity(1, "oeoee");
AddParity(2, "oeeoe");
AddParity(3, "oeeeo");
AddParity(4, "eooee");
AddParity(5, "eeooe");
AddParity(6, "eeeoo");
AddParity(7, "eoeoe");
AddParity(8, "eoeeo");
AddParity(9, "eeoeo");
}
static void AddCode(int digit, string lhOdd, string lhEven, string rh)
{
Pattern p = new Pattern();
p.LhOdd = lhOdd; p.LhEven = lhEven; p.Rh = rh;
codes.Add(digit, p);
}
static void AddParity(int digit, string par)
{
parity.Add(digit, new Parity(par));
}
#endregion
private CodeBarre13Settings settings;
private string code;
private string title;
public CodeBarre13(string code, string title)
: this(code, title, new CodeBarre13Settings())
{
}
public CodeBarre13(string code, string title, CodeBarre13Settings settings)
{
this.settings = settings;
this.code = code;
this.title = title;
if (!CheckCode(code))
throw new ArgumentException("Le code barre EAN13 est invalide.");
}
private bool CheckCode(string code)
{
if (code == null || code.Length != 13)
return false;
int res;
foreach (char c in code)
if (!int.TryParse(c.ToString(), out res))
return false;
char check = (char)('0' + CalculateChecksum(code.Substring(0, 12)));
return code[12] == check;
}
public static int CalculateChecksum(string code)
{
if (code == null || code.Length != 12)
throw new ArgumentException("Le code doit avoir une taille de 12 caractères");
int sum = 0;
for (int i = 0; i < 12; i++)
{
int v;
if (!int.TryParse(code[i].ToString(), out v))
throw new ArgumentException("L'un des caractères n'est pas un chiffre.");
sum += (i % 2 == 0 ? v : v * 3);
}
int check = 10 - (sum % 10);
return check % 10;
}
private int top;
public Image Paint()
{
CodeBarre13Settings settings = new CodeBarre13Settings();
top = settings.margeHaut;
Graphics g = Graphics.FromImage(new Bitmap(1, 1));
int width = (3 + 6 * 7 + 5 + 6 * 7 + 3) * settings.largeur + settings.margeGauche + settings.margeDroite + (int)g.MeasureString(code[0].ToString(), settings.font).Width;
int height = settings.hauteur;
if (title != null)
{
int h = (int)g.MeasureString(title, settings.font).Height;
height += h;
top += h;
}
Bitmap bmp = new Bitmap(width, height, PixelFormat.Format32bppArgb);
g = Graphics.FromImage(bmp);
int left = settings.margeGauche;
//LEFT GUARD
left = DrawLeftGuard(settings, g, code[0].ToString(), left);
//LEFT GROUP
int first = int.Parse(code[0].ToString());
Parity par = parity[first];
string digit = code[1].ToString();
left = Draw(settings, g, left, digit, codes[int.Parse(digit)].LhOdd); //Odd
for (int i = 2; i <= 6; i++)
{
digit = code[i].ToString();
Pattern p = codes[int.Parse(digit)];
left = Draw(settings, g, left, digit, (par.IsOdd(i - 2) ? p.LhOdd : p.LhEven));
}
//MIDDLE GUARD
left = DrawCenterGuard(settings, g, left);
//RIGHT GROUP
for (int i = 7; i <= 12; i++)
{
digit = code[i].ToString();
Pattern p = codes[int.Parse(digit)];
left = Draw(settings, g, left, digit, p.Rh);
}
//RIGHT GUARD
left = DrawRightGuard(settings, g, left);
return bmp;
}
private static Pen pen = new Pen(Color.Black);
private static Brush brush = Brushes.Black;
private int Draw(CodeBarre13Settings settings, Graphics g, int left, string digit, string s)
{
int h = (int)(settings.hauteur * 0.8);
g.DrawString(digit, settings.font, brush, left, h + top);
foreach (char c in s)
{
if (c == '1')
g.FillRectangle(brush, left, top, settings.largeur, h);
left += settings.largeur;
}
return left;
}
private int DrawLeftGuard(CodeBarre13Settings settings, Graphics g, string digit, int left)
{
int h = (int)(settings.hauteur * 0.8);
g.DrawString(digit, settings.font, brush, left, h + top);
left += (int)g.MeasureString(digit, settings.font).Width;
//TITLE
if (title != null)
g.DrawString(title, settings.font, brush, left, settings.margeHaut);
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
left += settings.largeur; //0
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
return left;
}
private int DrawRightGuard(CodeBarre13Settings settings, Graphics g, int left)
{
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
left += settings.largeur; //0
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
return left;
}
private int DrawCenterGuard(CodeBarre13Settings settings, Graphics g, int left)
{
left += settings.largeur; //0
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
left += settings.largeur; //0
g.FillRectangle(brush, left, top, settings.largeur, settings.hauteur); //1
left += settings.largeur;
left += settings.largeur; //0
return left;
}
class Pattern
{
private string lhOdd;
public string LhOdd
{
get { return lhOdd; }
set { lhOdd = value; }
}
private string lhEven;
public string LhEven
{
get { return lhEven; }
set { lhEven = value; }
}
private string rh;
public string Rh
{
get { return rh; }
set { rh = value; }
}
}
class Parity
{
private string par;
internal Parity(string par)
{
this.par = par;
}
internal bool IsOdd(int i)
{
return par[i] == 'o';
}
internal bool IsEven(int i)
{
return par[i] == 'e';
}
}
}
} |
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