www.pudn.com > Barcode_src.zip > Code93.cpp
// Code93.cpp: implementation of the CCode93 class.
//
// Copyright 2002 Neil Van Eps
//
/////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "Code93.h"
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
CCode93::CCode93()
{
// code 93
m_nSymbology = CODE93;
}
CCode93::~CCode93()
{
}
////////////////////////////////////////////////////////////////////////////////////
//
// Name:
// BitmapToClipboard()
//
// Description:
// puts the specified bitmap on the clipboard
//
// Arguments:
// none
//
// Return:
// void
//
// Called by:
// public class interface
//
////////////////////////////////////////////////////////////////////////////////////
void CCode93::BitmapToClipboard()
{
CDC memDC;
CBitmap oBitmap;
memDC.CreateCompatibleDC(NULL);
m_hDC = memDC.GetSafeHdc();
// create compatible, correctly sized bitmap
oBitmap.CreateCompatibleBitmap(&memDC,m_nFinalBarcodePixelWidth,m_nPixelHeight);
// select our bitmap into the device context
CBitmap * oldbm = memDC.SelectObject(&oBitmap);
// turn area white - stock black bitmap is selected
memDC.BitBlt(0,0,m_nFinalBarcodePixelWidth,m_nPixelHeight,NULL,0,0,WHITENESS);
// draw bitmap into memory device context
DrawBitmap();
// put bitmap on clipboard
::OpenClipboard(NULL);
::EmptyClipboard();
::SetClipboardData(CF_BITMAP, oBitmap.m_hObject);
::CloseClipboard();
// deselect object out of device context
memDC.SelectObject(oldbm);
// make sure bitmap not deleted with CBitmap object
oBitmap.Detach();
return;
}
////////////////////////////////////////////////////////////////////////////////////
//
// Name:
// DrawBitmap()
//
// Description:
// draws a barcode using the previously loaded data
//
// Arguments:
// none
//
// Return:
// void
//
// Called by:
// public class interface
//
////////////////////////////////////////////////////////////////////////////////////
void CCode93::DrawBitmap()
{
long i,nFirstNumber,nSecondNumber;
CString csCurrentPattern;
// draw start character
DrawPattern(RetrievePattern(47));
// draw each character in the message
for (i=0;i-1;i--)
{
ASCIItoCode93Sequence((long)m_csMessage.GetAt(i),&nFirstNumber,&nSecondNumber);
// add to the sum
nSum += (nWeight * nFirstNumber);
nWeight++;
if (nWeight>20)
nWeight=1;
// if its a two sequence character
if (nSecondNumber!=-1)
{
nSum += (nWeight * nSecondNumber);
nWeight++;
if (nWeight>20)
nWeight=1;
}
}
// draw the "C" check digit character
DrawPattern(RetrievePattern(nSum%47));
// "K" check digit character - include the "C" check digit character in calculations
nWeight = 2;
nSum = nSum%47;
for (i=m_csMessage.GetLength()-1;i>-1;i--)
{
ASCIItoCode93Sequence((long)m_csMessage.GetAt(i),&nFirstNumber,&nSecondNumber);
// add to the sum
nSum += (nWeight * nFirstNumber);
nWeight++;
if (nWeight>15)
nWeight=1;
// if its a two sequence character
if (nSecondNumber!=-1)
{
nSum += (nWeight * nSecondNumber);
nWeight++;
if (nWeight>15)
nWeight=1;
}
}
// draw the "K" check digit character
DrawPattern(RetrievePattern(nSum%47));
return;
}
////////////////////////////////////////////////////////////////////////////////////
//
// Name:
// ASCIItoCode93Sequence()
//
// Description:
// translates an ASCII character into the appropriate CODE93 sequence
//
// Arguments:
// long nFirstNumber - first number of the code93 sequence
// long nSecondNumber - second number of the code93 sequence, -1 if not applicable
//
// Return:
// void
//
// Called by:
// CCode93::DrawBitmap(), CCode93::DrawCheckDigits()
//
////////////////////////////////////////////////////////////////////////////////////
void CCode93::ASCIItoCode93Sequence(long nASCIINumber,long *nFirstNumber, long *nSecondNumber)
{
switch (nASCIINumber)
{
case 0:
*nFirstNumber = 44;
*nSecondNumber = 30;
break;
case 1:
*nFirstNumber = 43;
*nSecondNumber = 10;
break;
case 2:
*nFirstNumber = 43;
*nSecondNumber = 11;
break;
case 3:
*nFirstNumber = 43;
*nSecondNumber = 12;
break;
case 4:
*nFirstNumber = 43;
*nSecondNumber = 13;
break;
case 5:
*nFirstNumber = 43;
*nSecondNumber = 14;
break;
case 6:
*nFirstNumber = 43;
*nSecondNumber = 15;
break;
case 7:
*nFirstNumber = 43;
*nSecondNumber = 16;
break;
case 8:
*nFirstNumber = 43;
*nSecondNumber = 17;
break;
case 9:
*nFirstNumber = 43;
*nSecondNumber = 18;
break;
case 10:
*nFirstNumber = 43;
*nSecondNumber = 19;
break;
case 11:
*nFirstNumber = 43;
*nSecondNumber = 20;
break;
case 12:
*nFirstNumber = 43;
*nSecondNumber = 21;
break;
case 13:
*nFirstNumber = 43;
*nSecondNumber = 22;
break;
case 14:
*nFirstNumber = 43;
*nSecondNumber = 23;
break;
case 15:
*nFirstNumber = 43;
*nSecondNumber = 24;
break;
case 16:
*nFirstNumber = 43;
*nSecondNumber = 25;
break;
case 17:
*nFirstNumber = 43;
*nSecondNumber = 26;
break;
case 18:
*nFirstNumber = 43;
*nSecondNumber = 27;
break;
case 19:
*nFirstNumber = 43;
*nSecondNumber = 28;
break;
case 20:
*nFirstNumber = 43;
*nSecondNumber = 29;
break;
case 21:
*nFirstNumber = 43;
*nSecondNumber = 30;
break;
case 22:
*nFirstNumber = 43;
*nSecondNumber = 31;
break;
case 23:
*nFirstNumber = 43;
*nSecondNumber = 32;
break;
case 24:
*nFirstNumber = 43;
*nSecondNumber = 33;
break;
case 25:
*nFirstNumber = 43;
*nSecondNumber = 34;
break;
case 26:
*nFirstNumber = 43;
*nSecondNumber = 35;
break;
case 27:
*nFirstNumber = 44;
*nSecondNumber = 10;
break;
case 28:
*nFirstNumber = 44;
*nSecondNumber = 11;
break;
case 29:
*nFirstNumber = 44;
*nSecondNumber = 12;
break;
case 30:
*nFirstNumber = 44;
*nSecondNumber = 13;
break;
case 31:
*nFirstNumber = 44;
*nSecondNumber = 14;
break;
case 32:
*nFirstNumber = 38;
*nSecondNumber = -1;
break;
case 33:
*nFirstNumber = 45;
*nSecondNumber = 10;
break;
case 34:
*nFirstNumber = 45;
*nSecondNumber = 11;
break;
case 35:
*nFirstNumber = 45;
*nSecondNumber = 12;
break;
case 36:
*nFirstNumber = 39;
*nSecondNumber = -1;
break;
case 37:
*nFirstNumber = 42;
*nSecondNumber = -1;
break;
case 38:
*nFirstNumber = 45;
*nSecondNumber = 15;
break;
case 39:
*nFirstNumber = 45;
*nSecondNumber = 16;
break;
case 40:
*nFirstNumber = 45;
*nSecondNumber = 17;
break;
case 41:
*nFirstNumber = 45;
*nSecondNumber = 18;
break;
case 42:
*nFirstNumber = 45;
*nSecondNumber = 19;
break;
case 43:
*nFirstNumber = 41;
*nSecondNumber = -1;
break;
case 44:
*nFirstNumber = 45;
*nSecondNumber = 21;
break;
case 45:
*nFirstNumber = 36;
*nSecondNumber = -1;
break;
case 46:
*nFirstNumber = 37;
*nSecondNumber = -1;
break;
case 47:
*nFirstNumber = 40;
*nSecondNumber = -1;
break;
case 48:
*nFirstNumber = 0;
*nSecondNumber = -1;
break;
case 49:
*nFirstNumber = 1;
*nSecondNumber = -1;
break;
case 50:
*nFirstNumber = 2;
*nSecondNumber = -1;
break;
case 51:
*nFirstNumber = 3;
*nSecondNumber = -1;
break;
case 52:
*nFirstNumber = 4;
*nSecondNumber = -1;
break;
case 53:
*nFirstNumber = 5;
*nSecondNumber = -1;
break;
case 54:
*nFirstNumber = 6;
*nSecondNumber = -1;
break;
case 55:
*nFirstNumber = 7;
*nSecondNumber = -1;
break;
case 56:
*nFirstNumber = 8;
*nSecondNumber = -1;
break;
case 57:
*nFirstNumber = 9;
*nSecondNumber = -1;
break;
case 58:
*nFirstNumber = 45;
*nSecondNumber = 35;
break;
case 59:
*nFirstNumber = 44;
*nSecondNumber = 15;
break;
case 60:
*nFirstNumber = 44;
*nSecondNumber = 16;
break;
case 61:
*nFirstNumber = 44;
*nSecondNumber = 17;
break;
case 62:
*nFirstNumber = 44;
*nSecondNumber = 18;
break;
case 63:
*nFirstNumber = 44;
*nSecondNumber = 19;
break;
case 64:
*nFirstNumber = 44;
*nSecondNumber = 31;
break;
case 65:
*nFirstNumber = 10;
*nSecondNumber = -1;
break;
case 66:
*nFirstNumber = 11;
*nSecondNumber = -1;
break;
case 67:
*nFirstNumber = 12;
*nSecondNumber = -1;
break;
case 68:
*nFirstNumber = 13;
*nSecondNumber = -1;
break;
case 69:
*nFirstNumber = 14;
*nSecondNumber = -1;
break;
case 70:
*nFirstNumber = 15;
*nSecondNumber = -1;
break;
case 71:
*nFirstNumber = 16;
*nSecondNumber = -1;
break;
case 72:
*nFirstNumber = 17;
*nSecondNumber = -1;
break;
case 73:
*nFirstNumber = 18;
*nSecondNumber = -1;
break;
case 74:
*nFirstNumber = 19;
*nSecondNumber = -1;
break;
case 75:
*nFirstNumber = 20;
*nSecondNumber = -1;
break;
case 76:
*nFirstNumber = 21;
*nSecondNumber = -1;
break;
case 77:
*nFirstNumber = 22;
*nSecondNumber = -1;
break;
case 78:
*nFirstNumber = 23;
*nSecondNumber = -1;
break;
case 79:
*nFirstNumber = 24;
*nSecondNumber = -1;
break;
case 80:
*nFirstNumber = 25;
*nSecondNumber = -1;
break;
case 81:
*nFirstNumber = 26;
*nSecondNumber = -1;
break;
case 82:
*nFirstNumber = 27;
*nSecondNumber = -1;
break;
case 83:
*nFirstNumber = 28;
*nSecondNumber = -1;
break;
case 84:
*nFirstNumber = 29;
*nSecondNumber = -1;
break;
case 85:
*nFirstNumber = 30;
*nSecondNumber = -1;
break;
case 86:
*nFirstNumber = 31;
*nSecondNumber = -1;
break;
case 87:
*nFirstNumber = 32;
*nSecondNumber = -1;
break;
case 88:
*nFirstNumber = 33;
*nSecondNumber = -1;
break;
case 89:
*nFirstNumber = 34;
*nSecondNumber = -1;
break;
case 90:
*nFirstNumber = 35;
*nSecondNumber = -1;
break;
case 91:
*nFirstNumber = 44;
*nSecondNumber = 20;
break;
case 92:
*nFirstNumber = 44;
*nSecondNumber = 21;
break;
case 93:
*nFirstNumber = 44;
*nSecondNumber = 22;
break;
case 94:
*nFirstNumber = 44;
*nSecondNumber = 23;
break;
case 95:
*nFirstNumber = 44;
*nSecondNumber = 24;
break;
case 96:
*nFirstNumber = 44;
*nSecondNumber = 32;
break;
case 97:
*nFirstNumber = 46;
*nSecondNumber = 10;
break;
case 98:
*nFirstNumber = 46;
*nSecondNumber = 11;
break;
case 99:
*nFirstNumber = 46;
*nSecondNumber = 12;
break;
case 100:
*nFirstNumber = 46;
*nSecondNumber = 13;
break;
case 101:
*nFirstNumber = 46;
*nSecondNumber = 14;
break;
case 102:
*nFirstNumber = 46;
*nSecondNumber = 15;
break;
case 103:
*nFirstNumber = 46;
*nSecondNumber = 16;
break;
case 104:
*nFirstNumber = 46;
*nSecondNumber = 17;
break;
case 105:
*nFirstNumber = 46;
*nSecondNumber = 18;
break;
case 106:
*nFirstNumber = 46;
*nSecondNumber = 19;
break;
case 107:
*nFirstNumber = 46;
*nSecondNumber = 20;
break;
case 108:
*nFirstNumber = 46;
*nSecondNumber = 21;
break;
case 109:
*nFirstNumber = 46;
*nSecondNumber = 22;
break;
case 110:
*nFirstNumber = 46;
*nSecondNumber = 23;
break;
case 111:
*nFirstNumber = 46;
*nSecondNumber = 24;
break;
case 112:
*nFirstNumber = 46;
*nSecondNumber = 25;
break;
case 113:
*nFirstNumber = 46;
*nSecondNumber = 26;
break;
case 114:
*nFirstNumber = 46;
*nSecondNumber = 27;
break;
case 115:
*nFirstNumber = 46;
*nSecondNumber = 28;
break;
case 116:
*nFirstNumber = 46;
*nSecondNumber = 29;
break;
case 117:
*nFirstNumber = 46;
*nSecondNumber = 30;
break;
case 118:
*nFirstNumber = 46;
*nSecondNumber = 31;
break;
case 119:
*nFirstNumber = 46;
*nSecondNumber = 32;
break;
case 120:
*nFirstNumber = 46;
*nSecondNumber = 33;
break;
case 121:
*nFirstNumber = 46;
*nSecondNumber = 34;
break;
case 122:
*nFirstNumber = 46;
*nSecondNumber = 35;
break;
case 123:
*nFirstNumber = 44;
*nSecondNumber = 25;
break;
case 124:
*nFirstNumber = 44;
*nSecondNumber = 26;
break;
case 125:
*nFirstNumber = 44;
*nSecondNumber = 27;
break;
case 126:
*nFirstNumber = 44;
*nSecondNumber = 28;
break;
case 127:
*nFirstNumber = 44;
*nSecondNumber = 29;
break;
}
}