recognizorview.cpp

一个条形码识别的源程序代码

// RecognizorView.cpp : implementation of the CRecognizorView class
//

#include "stdafx.h"
#include "Recognizor.h"

#include "RecognizorDoc.h"
#include "RecognizorView.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CRecognizorView

IMPLEMENT_DYNCREATE(CRecognizorView, CView)

BEGIN_MESSAGE_MAP(CRecognizorView, CView)
	//{{AFX_MSG_MAP(CRecognizorView)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CRecognizorView construction/destruction

CRecognizorView::CRecognizorView()
{
	// TODO: add construction code here
    m_bModified=FALSE;
	lineWidth = 1;
	start = 9;
	BuildCoderule();
	BuildFirstcode();
}

CRecognizorView::~CRecognizorView()
{
}

BOOL CRecognizorView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CRecognizorView drawing

void CRecognizorView::OnDraw(CDC* pDC)
{
	CRecognizorDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	barcode.Empty();
	if(!m_bModified)
		return;

	CDC dcImage;
	bm=(BITMAP *)new char[sizeof(BITMAP)];
	if(!dcImage.CreateCompatibleDC(pDC))
		return;
	m_bitmap.GetBitmap(bm);
	dcImage.SelectObject(&m_bitmap);
	pDC->BitBlt(0,0,bm->bmWidth,bm->bmHeight,&dcImage,0,0,SRCCOPY);
	Recognize(pDC);
}

/////////////////////////////////////////////////////////////////////////////
// CRecognizorView diagnostics

#ifdef _DEBUG
void CRecognizorView::AssertValid() const
{
	CView::AssertValid();
}

void CRecognizorView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CRecognizorDoc* CRecognizorView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CRecognizorDoc)));
	return (CRecognizorDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CRecognizorView message handlers

void CRecognizorView::OnFileOpen() 
{
	// TODO: Add your command handler code here
	CString filename;
	CFile file;
	TCHAR szFilters[]=_T("位图文件(*.bmp)|*.bmp||");
	CFileDialog dlg(TRUE,_T("bitmap"),_T("*.bmp"),OFN_HIDEREADONLY | OFN_FILEMUSTEXIST,szFilters);
    if(dlg.DoModal()==IDOK)
	{
        filename=dlg.GetPathName();
		if(m_bModified) m_bitmap.Detach();
	    HBITMAP hBitmap=(HBITMAP)LoadImage(NULL,_T(filename),IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_DEFAULTSIZE|LR_LOADFROMFILE);
        m_bitmap.Attach(hBitmap);
		m_bModified=TRUE;
		CWnd::Invalidate();
	}
	else return;
}


void CRecognizorView::Recognize(CDC *pDC)
{
     CString Bitcode;
//	 CString testcode;
	 CString thecode[12];
	 CString findfirst;

	 RecogBits(pDC,Bitcode);

//	 for(int k=0;k<=6;k++)
//		 testcode+=Bitcode.GetAt(k);
//	 if(!IsOdd(testcode))
//		 Bitcode.MakeReverse();
	 for(int i=0;i<=11;i++)
	 {   
		 for(int j=i*7;j<=i*7+6;j++)
         {
			 thecode[i]+=Bitcode.GetAt(j);
		 }
	 }
	 for(int i2=0;i2<=5;i2++)
	 {
		 if(IsOdd(thecode[i2]))
			 findfirst+='A';
         else 
			 findfirst+='B';
	 }
	 barcode+=firstcode[findfirst];
	 for(int i3=0;i3<=11;i3++)
	 {
		 barcode+=coderule[thecode[i3]];
	 }
	 DisplayCode(pDC,barcode);
}

BOOL CRecognizorView::Isblack(COLORREF color)
{
     if(color==0x00000000)
		 return TRUE;
	 else
		 return FALSE;
}

//DEL int CRecognizorView::CalMode(CDC *pDC)
//DEL {
//DEL      int mode=0;
//DEL 	 int i;
//DEL 	 pDC->SetMapMode(MM_TEXT);
//DEL 	 for(i=0;i<3000;i++)
//DEL 	 {
//DEL          if(Isblack(pDC->GetPixel(i,50))) break;
//DEL      }
//DEL 	 for(int j=i;j<5000;j++)
//DEL 	 {
//DEL 		 if(!Isblack(pDC->GetPixel(j,50))) break;
//DEL 		 mode++;
//DEL 	 }
//DEL 	 start=i;
//DEL 	 return mode;
//DEL }


void CRecognizorView::RecogBits(CDC *pDC, CString &bit)
{
     int begin=start+3*lineWidth;
	 pDC->SetMapMode(MM_TEXT);
	 for(int i=begin+lineWidth/2;i<=begin+41*lineWidth+lineWidth/2;i+=lineWidth)
	 {
		 if(!Isblack(pDC->GetPixel(i,50)))
			 bit+='0';
		 else
			 bit+='1';
	 }
	 begin=start+50*lineWidth;
	 for(int j=begin+lineWidth/2;j<=begin+41*lineWidth+lineWidth/2;j+=lineWidth)
	 {
		 if(!Isblack(pDC->GetPixel(j,50)))
			bit+='0';
		 else bit+='1';
	 }
}

BOOL CRecognizorView::IsOdd(CString str)
{
    int count=0;
	for(int i=0;i<=6;i++)
	{
		if(str.GetAt(i)=='1')
			count++;
	}
	if(count%2==1)
		return TRUE;
	else
		return FALSE;
}

void CRecognizorView::BuildCoderule()
{
    coderule[_T("0001101")]=_T("0");
    coderule[_T("0100111")]=_T("0");
    coderule[_T("1110010")]=_T("0");
	coderule[_T("0011001")]=_T("1");
	coderule[_T("0110011")]=_T("1");
    coderule[_T("1100110")]=_T("1");
    coderule[_T("0010011")]=_T("2");
	coderule[_T("0011011")]=_T("2");
	coderule[_T("1101100")]=_T("2");
	coderule[_T("0111101")]=_T("3");
	coderule[_T("0100001")]=_T("3");
	coderule[_T("1000010")]=_T("3");
    coderule[_T("0100011")]=_T("4");
	coderule[_T("0011101")]=_T("4");
	coderule[_T("1011100")]=_T("4");
	coderule[_T("0110001")]=_T("5");
	coderule[_T("0111001")]=_T("5");
	coderule[_T("1001110")]=_T("5");
	coderule[_T("0101111")]=_T("6");
	coderule[_T("0000101")]=_T("6");
	coderule[_T("1010000")]=_T("6");
    coderule[_T("0111011")]=_T("7");
	coderule[_T("0010001")]=_T("7");
	coderule[_T("1000100")]=_T("7");
	coderule[_T("0110111")]=_T("8");
	coderule[_T("0001001")]=_T("8");
	coderule[_T("1001000")]=_T("8");
    coderule[_T("0001011")]=_T("9");
	coderule[_T("0010111")]=_T("9");
	coderule[_T("1110100")]=_T("9");
}

void CRecognizorView::BuildFirstcode()
{
    firstcode[_T("AAAAAA")]=_T("0");
    firstcode[_T("AABABB")]=_T("1");
	firstcode[_T("AABBAB")]=_T("2");
	firstcode[_T("AABBBA")]=_T("3");
	firstcode[_T("ABAABB")]=_T("4");
	firstcode[_T("ABBAAB")]=_T("5");
    firstcode[_T("ABBBAA")]=_T("6");
	firstcode[_T("ABABAB")]=_T("7");
	firstcode[_T("ABABBA")]=_T("8");
	firstcode[_T("ABBABA")]=_T("9");
}

void CRecognizorView::DisplayCode(CDC *pDC,CString str)
{
    CString display=_T("您的条形码的数字编码为 ");
	display+=str;
	pDC->TextOut(270,180,display);
}


//DEL void CRecognizorView::RecogBits90(CDC *pDC,CString &bit)
//DEL {
//DEL      int begin=start+3*model;
//DEL 	 pDC->SetMapMode(MM_TEXT);
//DEL 	 for(int i=begin+model/2;i<=begin+41*model+model/2;i+=model)
//DEL 	 {
//DEL 		 if(!Isblack(pDC->GetPixel(50,i)))
//DEL 			bit+='0';
//DEL 		 else bit+='1';
//DEL 	 }
//DEL 	 begin=start+50*model;
//DEL 	 for(int j=begin+model/2;j<=begin+41*model+model/2;j+=model)
//DEL 	 {
//DEL 		 if(!Isblack(pDC->GetPixel(50,j)))
//DEL 			bit+='0';
//DEL 		 else bit+='1';
//DEL 	 }
//DEL }

//DEL int CRecognizorView::CalMode90(CDC *pDC)
//DEL {
//DEL      int mode=0;
//DEL 	 int i;
//DEL 	 pDC->SetMapMode(MM_TEXT);
//DEL 	 for(i=0;i<3000;i++)
//DEL 	 {
//DEL          if(Isblack(pDC->GetPixel(50,i))) break;
//DEL      }
//DEL      for(int j=i;j<5000;j++)
//DEL 	 {
//DEL 		 if(!Isblack(pDC->GetPixel(50,j))) break;
//DEL 		 mode++;
//DEL 	 }
//DEL 	 start=i;
//DEL 	 return mode;
//DEL }