namespace Barcode
{
/// <summary>
/// Code39：生成39条形码。
/// </summary>
public class Code39
{
//对应码表
private Hashtable Decode;
private Hashtable CheckCode;
//每个字符间的间隔符
private string SPARATOR="0";
//float WidthUNIT= 0.25f;//宽度单位 mm
public int WidthCU = 3; //粗线和宽间隙宽度
public int WidthXI = 1; //细线和窄间隙宽度
public int xCoordinate =10;//75; //条码起始坐标
public int LineHeight=60;
private int Height=0;
private int Width=0;
public Code39()
{
Decode=new Hashtable();
Decode.Add("0","000110100");
Decode.Add("1","100100001");
Decode.Add("2","001100001");
Decode.Add("3","101100000");
Decode.Add("4","000110001");
Decode.Add("5","100110000");
Decode.Add("6","001110000");
Decode.Add("7","000100101");
Decode.Add("8","100100100");
Decode.Add("9","001100100");
Decode.Add("A","100001001");
Decode.Add("B","001001001");
Decode.Add("C","101001000");
Decode.Add("D","000011001");
Decode.Add("E","100011000");
Decode.Add("F","001011000");
Decode.Add("G","000001101");
Decode.Add("H","100001100");
Decode.Add("I","001001101");
Decode.Add("J","000011100");
Decode.Add("K","100000011");
Decode.Add("L","001000011");
Decode.Add("M","101000010");
Decode.Add("N","000010011");
Decode.Add("O","100010010");
Decode.Add("P","001010010");
Decode.Add("Q","000000111");
Decode.Add("R","100000110");
Decode.Add("S","001000110");
Decode.Add("T","000010110");
Decode.Add("U","110000001");
Decode.Add("V","011000001");
Decode.Add("W","111000000");
Decode.Add("X","010010001");
Decode.Add("Y","110010000");
Decode.Add("Z","011010000");
Decode.Add("-","010000101");
Decode.Add("%","000101010");
Decode.Add("$","010101000");
Decode.Add("*","010010100");
CheckCode=new Hashtable();
CheckCode.Add("0","0");
CheckCode.Add("1","1");
CheckCode.Add("2","2");
CheckCode.Add("3","3");
CheckCode.Add("4","4");
CheckCode.Add("5","5");
CheckCode.Add("6","6");
CheckCode.Add("7","7");
CheckCode.Add("8","8");
CheckCode.Add("9","9");
CheckCode.Add("A","10");
CheckCode.Add("B","11");
CheckCode.Add("C","12");
CheckCode.Add("D","13");
CheckCode.Add("E","14");
CheckCode.Add("F","15");
CheckCode.Add("G","16");
CheckCode.Add("H","17");
CheckCode.Add("I","18");
CheckCode.Add("J","19");
CheckCode.Add("K","20");
CheckCode.Add("L","21");
CheckCode.Add("M","22");
CheckCode.Add("N","23");
CheckCode.Add("O","24");
CheckCode.Add("P","25");
CheckCode.Add("Q","26");
CheckCode.Add("R","27");
CheckCode.Add("S","28");
CheckCode.Add("T","29");
CheckCode.Add("U","30");
CheckCode.Add("V","31");
CheckCode.Add("W","32");
CheckCode.Add("X","33");
CheckCode.Add("Y","34");
CheckCode.Add("Z","35");
CheckCode.Add("-","36");
CheckCode.Add(".","37");
CheckCode.Add(",","38");
CheckCode.Add("$","39");
CheckCode.Add("/","40");
CheckCode.Add("+","41");
CheckCode.Add("%","42");
}
//保存文件
public Boolean saveFile(string Code,string Title,int UseCheck)
{
string code39=Encode39(Code,UseCheck);
if(code39!=null)
{
Bitmap saved=new Bitmap(this.Width,this.Height);
Graphics g=Graphics.FromImage(saved);
g.FillRectangle(new SolidBrush(Color.White),0,0,this.Width,this.Height);
this.DrawBarCode39(code39,Title,g);
//string path=ConfigurationSettings.AppSettings["ImagePath"];
string path="C:\\";
string filename=path+Code+".jpg";
saved.Save(filename,ImageFormat.Jpeg);
saved.Dispose();
return true;
}
return false;
}
/***
* Code:未经编码的字符串
*
* **/
private string Encode39(string Code,int UseCheck)
{
int UseStand = 1; //检查输入待编码字符是否为标准格式（是否以*开始结束）
//保存备份数据
string OriginalCode=Code;
//为空不进行编码
if(null==Code||Code.Trim().Equals(""))
{
return null;
}
//检查错误字符
Code = Code.ToUpper(); //转为大写
Regex rule = new Regex(@"[^0-9A-Z%$\-*]");
if(rule.IsMatch(Code))
{
MessageBox.Show("编码中包含非法字符，目前仅支持字母,数字及%$-*符号!!");
return null;
}
//计算检查码
if (UseCheck==1)
{
int Check = 0;
//累计求和
for (int i = 0; i < Code.Length; i++)
{
Check += int.Parse((string)CheckCode[Code.Substring(i,1)]);
}
//取模
Check=Check%43;
//附加检测码
foreach(DictionaryEntry de in CheckCode)
{
if((string)de.Value==Check.ToString())
{
Code=Code+(string)de.Key;
break;
}
}
}
//标准化输入字符，增加起始标记
if (UseStand==1)
{
if (Code.Substring(0,1) != "*")
{
Code = "*" + Code;
}
if (Code.Substring(Code.Length-1,1)!="*")
{
Code = Code + "*";
}
}
//转换成39编码
string Code39="";
for (int i = 0; i < Code.Length; i++)
{
Code39=Code39+(string)Decode[Code.Substring(i,1)]+SPARATOR;
}
int height = 30+LineHeight;//定义图片高度
int width=xCoordinate;
for(int i=0;i<Code39.Length;i++)
{
if("0".Equals(Code39.Substring(i,1)))
{
width+=WidthXI;
}
else
{
width+=WidthCU;
}
}
this.Width=width+xCoordinate;
this.Height=height;
return Code39;
}
private void DrawBarCode39(string Code39,string Title,Graphics g)
{
int UseTitle = 1; //条码上端显示标题
//int UseTTF = 1; //使用TTF字体，方便显示中文，需要$UseTitle=1时才能生效
if(Title.Trim().Equals(""))
{
UseTitle=0;
}
Pen pWhite=new Pen(Color.White, 1);
Pen pBlack=new Pen(Color.Black, 1);
int position=xCoordinate;
for(int i=0;i<Code39.Length;i++)
{
//绘制条线
if("0".Equals(Code39.Substring(i,1)))
{
for(int j=0;j<WidthXI;j++)
{
g.DrawLine(pBlack,position+j,5,position+j,5+LineHeight);
}
position+=WidthXI;
}
else
{
for(int j=0;j<WidthCU;j++)
{
g.DrawLine(pBlack,position+j,5,position+j,5+LineHeight);
}
position+=WidthCU;
}
i++;
//绘制间隔线
if("0".Equals(Code39.Substring(i,1)))
{
position+=WidthXI;
}
else
{
position+=WidthCU;
}
}
//显示标题
if(UseTitle==1)
{
Font TitleFont=new Font("宋体", 16, FontStyle.Bold);
SizeF sf=g.MeasureString(Title,TitleFont);
g.DrawString(Title,TitleFont, Brushes.Black,(Width-sf.Width)/2,LineHeight+5);
}
return ;
}
}
}
