如何将EPSON ESC/P字节流转换为位图？

我通过一个串行COM端口连接设备，从中可以得到爱普生ESC/P格式的一串字符。如何将EPSON ESC/P字节流转换为位图？

是否有可能为此流提供一些C＃类，然后将结果保存为图像或直接打印结果？

Like System.Drawing.Printing.PrintDocument thePrintDocument = new System.Drawing.Printing.PrintDocument（）;

thePrintDocument.FeedWithESCP（myString）; thePrintDocument.SaveThisAsPng（myFile）;

问候的Stefan

来源

2011-08-23 Stefan Olsson

http://www.printtransform.com/ –

不错的链接，但没有定价？ – Yahia

那么微软平台没有什么能够完成这项工作？ –

下面是一个简单的解决方案，采用从Epson打印机接收到的字节。这不是爱普生ESC/P协议的完整实现，但它是足以让我

字节[] myData的是从打印机接收的流

public static Bitmap CreateImage(byte[] myData) 
    { 
     int i = 0; 
     int ss = 0; 
     float xpos = 0; 
     float ESCKxpos = 0; 
     float yposStep = 8; 
     float ypos = 0; 
     int p1 = 0; 
     int p2 = 0; 

     Font fn = null; 
     Font fnw = null; 
     Font fdw = null; 
     Bitmap pg = new Bitmap(600, 600); 
     Graphics gr = Graphics.FromImage(pg); 
     SolidBrush sb = new SolidBrush(Color.Black); 

     gr.FillRectangle(new SolidBrush(Color.White), 0, 0, pg.Width, pg.Height); 

     xpos = 0; 
     ypos = 0; 

     try 
     { 
      i = 8; 
      fnw = new Font("Courier New", i--, FontStyle.Regular); 
      while (fnw.GetHeight() > 8) 
       fnw = new Font("Courier New", i--, FontStyle.Regular); 

      i = 16; 
      fdw = new Font("Courier New", i--, FontStyle.Regular); 
      while (fdw.GetHeight() > 16) 
       fdw = new Font("Courier New", i--, FontStyle.Regular); 


      fn = fnw; 
      // 
      // Read the stream of bytes, use a state machine 
      // to interpretate the various codes 
      // 
      i = 0; 
      while (i < myData.Length) 
      { 
       switch (ss) 
       { 
        case 0: 
         switch (myData[i]) 
         { 
          case 10: // Line feed 
           ypos += yposStep; 
           break; 

          case 13: // Carrige return 
           xpos = 0; 
           break; 

          case 14: // SO 
           break; 

          case 27: // ESC sequence 
           ss = 100; 
           break; 

          default: 
           p1 = 0; 
           break; 
         } 
         break; 

        case 100: 
         // 
         // Escape sequence 
         // 
         switch (myData[i]) 
         { 
          case (byte)'A': // ESC A, select line spacing 
           ss = 110; 
           break; 

          case (byte)'K': // ESC K, bitmap image 
           ss = 120; 
           break; 

          case (byte)'W': // ESC W, select font width 
           ss = 130; 
           break; 

          default: 
           p1 = 0; 
           break; 
         } 
         break; 

        case 110: // ESC A n, n/60-inch line spacing 
         // Ignore this 
         ss = 0; 
         break; 

        case 120: // ESC K, bitmap image 
         p1 = myData[i]; 
         ss = 121; 
         break; 

        case 121: // ESC K, bitmap image 
         p2 = myData[i]; 
         p2 *= 256; 
         p2 += p1; 
         if (p2 < 1) 
         { 
          ss = 0; 
         } 
         else 
         { 
          ESCKxpos = xpos; 
          ss = 122; 
         } 
         break; 

        case 122: // ESC K, bitmap image 
         { 
          int z; 

          for (int y = 0; y < 8; y++) 
          { 
           z = 1 << y; 
           if ((myData[i] & z) != 0) 
           { 
            gr.FillRectangle(sb, xpos, ypos+(7 - y), 1, 1); 
           } 
          } 
          xpos++; 
          p2--; 

          if (p2 < 1) 
          { 
           ss = 0; 
           xpos = ESCKxpos; 
          } 
         } 
         break; 


        case 130:// ESC W n, Set the printer font to normal or double width 
         if ((myData[i] == 1) || (myData[i] == 49)) 
         { 
          fn = fdw; 
          yposStep = 16; 
         } 
         else 
         { 
          fn = fnw; 
          yposStep = 8; 
         } 
         ss = 0; 
         break; 

       } 
       i++; 
      } 
     } 
     catch { } 



     return pg; 

    } // public static Bitmap CreateImage(byte[] myData)

来源

2011-09-14 07:44:21

如何将EPSON ESC/P字节流转换为位图？

回答

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