pdf417doc.cpp

对位图文件中的点阵数据进行模式判别,找出其中的完整PDF417条码,并按照GB/T 17172-1997规范来解释读出对应的数据.

// pdf417Doc.cpp : implementation of the CPdf417Doc class
//

#include "stdafx.h"
#include "pdf417.h"
#include "pdf417Doc.h"
#include "MainFrm.h"
#include "DisplayDataView.h"
#include "pdf417view.h"
#include "StdDataObject.h"

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

/////////////////////////////////////////////////////////////////////////////
// CPdf417Doc

IMPLEMENT_DYNCREATE(CPdf417Doc, CDocument)

BEGIN_MESSAGE_MAP(CPdf417Doc, CDocument)
	//{{AFX_MSG_MAP(CPdf417Doc)
	ON_COMMAND(IDM_ACT, OnAct)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CPdf417Doc construction/destruction

CPdf417Doc::CPdf417Doc()
{
	m_middata=NULL;
}

CPdf417Doc::~CPdf417Doc()
{
	if(m_middata!=NULL)
		delete[] m_middata;
}

BOOL CPdf417Doc::OnNewDocument()
{
	if (!CDocument::OnNewDocument())
		return FALSE;

	// TODO: add reinitialization code here
	// (SDI documents will reuse this document)

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////
// CPdf417Doc serialization

void CPdf417Doc::Serialize(CArchive& ar)
{
	if (ar.IsStoring())
	{
		// TODO: add storing code here
	}
	else
	{
		// TODO: add loading code here
	}
}

/////////////////////////////////////////////////////////////////////////////
// CPdf417Doc diagnostics

#ifdef _DEBUG
void CPdf417Doc::AssertValid() const
{
	CDocument::AssertValid();
}

void CPdf417Doc::Dump(CDumpContext& dc) const
{
	CDocument::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CPdf417Doc commands

BOOL CPdf417Doc::OnOpenDocument(LPCTSTR lpszPathName) 
{
	if (!CDocument::OnOpenDocument(lpszPathName))
		return FALSE;
	
	m_filename.Format("%s",lpszPathName);

	//调入文件
	HBITMAP hbitmap=(HBITMAP)::LoadImage(
		NULL,
		m_filename,
		IMAGE_BITMAP,
		0,0,
		LR_LOADFROMFILE);

	//判断文件格式,如不正确,则提示用户
	if(!hbitmap)
	{
		AfxMessageBox(IDS_ERRFILESTYLE);
		m_filename.Format("%s","");
		return TRUE;
	}

	CBitmap bitmap;
	bitmap.Attach(hbitmap);

	BITMAP bmInfo;
	bitmap.GetObject(sizeof(BITMAP),&bmInfo);

	m_bmpheight = bmInfo.bmHeight;
	m_bmpwidth = bmInfo.bmWidth;
	m_bmpBitsPixel = bmInfo.bmBitsPixel;

	m_data.Format("%s","");

	CMainFrame* MyFrm = (CMainFrame*)(AfxGetMainWnd()->GetActiveWindow());
	CPdf417View* FirstView = (CPdf417View*)(MyFrm->m_wndSplitter.GetPane(0,0));
	CDisplayDataView* SecondView = (CDisplayDataView*)(MyFrm->m_wndSplitter.GetPane(1,0));
	FirstView->Invalidate();
	SecondView->Invalidate();

	return TRUE;
}

void CPdf417Doc::OnAct() 
{
	CStdDataObject m_stdobj;

	//如果文件未打开,则提示用户后返回
	if(m_filename.IsEmpty())
	{
		AfxMessageBox("请先打开一位图文件");
		return;
	}

	//打开文件并读入数据
	{
		CBmpObject m_bmpobject;
		if(m_bmpobject.ReadBmpFile(m_filename))
		{
			m_bmpobject.BmpDataReverse();
			m_stdobj.GetStdData(&m_bmpobject);
		}
		else
			return;
	}

	//判断是否条码数据阅读成功，如是，则条码数据已在m_stdobj的p417数据中了
	if(m_stdobj.Act())
	{
		if(m_stdobj.BarTo417Data())
		{
			m_stdobj.D417ToEnd();
			m_data.Format("%s",m_stdobj.pEndData);
			Height = m_stdobj.Height;
			Width = m_stdobj.Width;

			if(m_middata!=NULL) delete[] m_middata;
			m_middata = new UINT[Height*Width];
			for(int h=0,dCount=0;h<Height;h++)
				for(int w=0;w<Width;w++)
					m_middata[dCount++] = m_stdobj.p417Data[h*Width+w];

			CMainFrame* MyFrm = (CMainFrame*)(AfxGetMainWnd()->GetActiveWindow());
			CDisplayDataView* SecondView = (CDisplayDataView*)(MyFrm->m_wndSplitter.GetPane(1,0));
			SecondView->Invalidate();
		}
	}
	else
		AfxMessageBox("此位图中无PDF417条码数据!");	
}