|
|
@@ -0,0 +1,166 @@
|
|
|
+using System;
|
|
|
+using System.Collections.Generic;
|
|
|
+using System.Drawing;
|
|
|
+using System.Text;
|
|
|
+
|
|
|
+namespace UAS_Web.tool
|
|
|
+{
|
|
|
+ public class Code128
|
|
|
+ {
|
|
|
+ //ASCII从32到127对应的条码区,由3个条、3个空、共11个单元构成,符号内含校验码
|
|
|
+ private string[] Code128Encoding = new string[] {
|
|
|
+ "11011001100", "11001101100", "11001100110", "10010011000", "10010001100", "10001001100", "10011001000", "10011000100", "10001100100", "11001001000",
|
|
|
+ "11001000100", "11000100100", "10110011100", "10011011100", "10011001110", "10111001100", "10011101100", "10011100110", "11001110010", "11001011100",
|
|
|
+ "11001001110", "11011100100", "11001110100", "11101101110", "11101001100", "11100101100", "11100100110", "11101100100", "11100110100", "11100110010",
|
|
|
+ "11011011000", "11011000110", "11000110110", "10100011000", "10001011000", "10001000110", "10110001000", "10001101000", "10001100010", "11010001000",
|
|
|
+ "11000101000", "11000100010", "10110111000", "10110001110", "10001101110", "10111011000", "10111000110", "10001110110", "11101110110", "11010001110",
|
|
|
+ "11000101110", "11011101000", "11011100010", "11011101110", "11101011000", "11101000110", "11100010110", "11101101000", "11101100010", "11100011010",
|
|
|
+ "11101111010", "11001000010", "11110001010", "10100110000", "10100001100", "10010110000", "10010000110", "10000101100", "10000100110", "10110010000",
|
|
|
+ "10110000100", "10011010000", "10011000010", "10000110100", "10000110010", "11000010010", "11001010000", "11110111010", "11000010100", "10001111010",
|
|
|
+ "10100111100", "10010111100", "10010011110", "10111100100", "10011110100", "10011110010", "11110100100", "11110010100", "11110010010", "11011011110",
|
|
|
+ "11011110110", "11110110110", "10101111000", "10100011110", "10001011110", "10111101000", "10111100010", "11110101000", "11110100010", "10111011110",
|
|
|
+ "10111101110", "11101011110", "11110101110", "11010000100", "11010010000", "11010011100"
|
|
|
+ };
|
|
|
+ private const string Code128Stop = "11000111010", Code128End = "11"; //固定码尾
|
|
|
+ private enum Code128ChangeModes { CodeA = 101, CodeB = 100, CodeC = 99 }; //变更
|
|
|
+ private enum Code128StartModes { CodeUnset = 0, CodeA = 103, CodeB = 104, CodeC = 105 };//各类编码的码头
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 绘制Code128码(以像素为单位)
|
|
|
+ /// </summary>
|
|
|
+ public int EncodeBarcode(string code, System.Drawing.Graphics g, int x, int y, int width, int height, bool showText)
|
|
|
+ {
|
|
|
+ if (string.IsNullOrEmpty(code)) new Exception("条码不能为空");
|
|
|
+ List<int> encoded = CodetoEncoded(code); //1.拆分转义
|
|
|
+ encoded.Add(CheckDigitCode128(encoded)); //2.加入校验码
|
|
|
+ string encodestring = EncodeString(encoded); //3.编码
|
|
|
+
|
|
|
+ if (showText) //计算文本的大小,字体占图像的1/4高
|
|
|
+ {
|
|
|
+ Font font = new System.Drawing.Font("宋体", height / 7F, System.Drawing.FontStyle.Regular, GraphicsUnit.Pixel, ((byte)(0)));
|
|
|
+ SizeF size = g.MeasureString(code, font);
|
|
|
+ height = height - (int)size.Height;
|
|
|
+ g.DrawString(code, font, System.Drawing.Brushes.Black, x+11, y + height);
|
|
|
+ int w = DrawBarCode(g, encodestring, x, y, width, height); //4.绘制
|
|
|
+ return ((int)size.Width > w ? (int)size.Width : w);
|
|
|
+ }
|
|
|
+ else
|
|
|
+ return DrawBarCode(g, encodestring, x, y, width, height); //4.绘制
|
|
|
+ }
|
|
|
+
|
|
|
+ //1.检测并将字符串拆分并加入码头
|
|
|
+ private List<int> CodetoEncoded(string code)
|
|
|
+ {
|
|
|
+ List<int> encoded = new List<int>();
|
|
|
+ int type = 0;//2:B类,3:C类
|
|
|
+ for (int i = 0; code.Length > 0; i++)
|
|
|
+ {
|
|
|
+ int k = isNumber(code);
|
|
|
+ if (k >= 4) //连续偶个数字可优先使用C类(其实并不定要转C类,但能用C类时条码会更短)
|
|
|
+ {
|
|
|
+ if (type == 0) encoded.Add((int)Code128StartModes.CodeC); //加入码头
|
|
|
+ else if (type != 3) encoded.Add((int)(Code128ChangeModes.CodeC)); //转义
|
|
|
+ type = 3;
|
|
|
+ for (int j = 0; j < k; j = j + 2) //两位数字合为一个码身
|
|
|
+ {
|
|
|
+ encoded.Add(Int32.Parse(code.Substring(0, 2)));
|
|
|
+ code = code.Substring(2);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ if ((int)code[0] < 32 || (int)code[0] > 126) throw new Exception("字符串必须是数字或字母");
|
|
|
+ if (type == 0) encoded.Add((int)Code128StartModes.CodeB); //加入码头
|
|
|
+ else if (type != 2) encoded.Add((int)(Code128ChangeModes.CodeB)); //转义
|
|
|
+ type = 2;
|
|
|
+ encoded.Add((int)code[0] - 32);//字符串转为ASCII-32
|
|
|
+ code = code.Substring(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return encoded;
|
|
|
+ }
|
|
|
+ //2.校验码
|
|
|
+ private int CheckDigitCode128(List<int> encoded)
|
|
|
+ {
|
|
|
+ int check = encoded[0];
|
|
|
+ for (int i = 1; i < encoded.Count; i++)
|
|
|
+ check = check + (encoded[i] * i);
|
|
|
+ return (check % 103);
|
|
|
+ }
|
|
|
+
|
|
|
+ //2.编码(对应Code128Encoding数组)
|
|
|
+ private string EncodeString(List<int> encoded)
|
|
|
+ {
|
|
|
+ string encodedString = "";
|
|
|
+ for (int i = 0; i < encoded.Count; i++)
|
|
|
+ {
|
|
|
+ encodedString += Code128Encoding[encoded[i]];
|
|
|
+ }
|
|
|
+ encodedString += Code128Stop + Code128End; // 加入结束码
|
|
|
+ return encodedString;
|
|
|
+ }
|
|
|
+
|
|
|
+ //4.绘制条码(返回实际图像宽度)
|
|
|
+ private int DrawBarCode(System.Drawing.Graphics g, string encodeString, int x, int y, int width, int height)
|
|
|
+ {
|
|
|
+ //int w = width / encodeString.Length;
|
|
|
+ int w = 1;
|
|
|
+ for (int i = 0; i < encodeString.Length; i++)
|
|
|
+ {
|
|
|
+ g.FillRectangle(encodeString[i] == '0' ? System.Drawing.Brushes.White : System.Drawing.Brushes.Black, x, y, w, height);
|
|
|
+ x += w;
|
|
|
+ }
|
|
|
+ return w * (encodeString.Length + 2);
|
|
|
+ }
|
|
|
+ //检测是否连续偶个数字,返回连续数字的长度
|
|
|
+ private int isNumber(string code)
|
|
|
+ {
|
|
|
+ int k = 0;
|
|
|
+ for (int i = 0; i < code.Length; i++)
|
|
|
+ {
|
|
|
+ if (char.IsNumber(code[i]))
|
|
|
+ k++;
|
|
|
+ else
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if (k % 2 != 0) k--;
|
|
|
+ return k;
|
|
|
+ }
|
|
|
+
|
|
|
+ /// <summary>
|
|
|
+ /// 绘制Code128码到图片
|
|
|
+ /// </summary>
|
|
|
+ public Image EncodeBarcode(string code, int width, int height, bool showText)
|
|
|
+ {
|
|
|
+ Bitmap image = new Bitmap(width, height);
|
|
|
+ using (Graphics g = Graphics.FromImage(image))
|
|
|
+ {
|
|
|
+ g.Clear(Color.White);
|
|
|
+ int w = EncodeBarcode(code, g, 15, 0, width, height, showText);
|
|
|
+
|
|
|
+ Bitmap image2 = new Bitmap(w+15, height); //剪切多余的空白;
|
|
|
+ using (Graphics g2 = Graphics.FromImage(image2))
|
|
|
+ {
|
|
|
+ g2.DrawImage(image, 0, 0);
|
|
|
+ return image2;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ /// <summary>
|
|
|
+ /// 绘制Code128码到流
|
|
|
+ /// </summary>
|
|
|
+ public byte[] EncodeBarcodeByte(string code, int width, int height, bool showText)
|
|
|
+ {
|
|
|
+ Image image = EncodeBarcode(code, width, height, showText);
|
|
|
+ System.IO.MemoryStream ms = new System.IO.MemoryStream();
|
|
|
+ image.Save(ms, System.Drawing.Imaging.ImageFormat.Bmp);
|
|
|
+ byte[] byteImage = ms.ToArray();
|
|
|
+ ms.Close();
|
|
|
+ image.Dispose();
|
|
|
+ return byteImage;
|
|
|
+
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|