dotmatrixdlg.cpp

提取字符的点阵

// DotMatrixDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DotMatrix.h"
#include "DotMatrixDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDotMatrixDlg dialog

CDotMatrixDlg::CDotMatrixDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDotMatrixDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDotMatrixDlg)
	m_text = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CDotMatrixDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDotMatrixDlg)
	DDX_Text(pDX, IDC_EDIT1, m_text);
	DDV_MaxChars(pDX, m_text, 2);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDotMatrixDlg, CDialog)
	//{{AFX_MSG_MAP(CDotMatrixDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDotMatrixDlg message handlers

BOOL CDotMatrixDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CDotMatrixDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CDotMatrixDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDotMatrixDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

/*************************************************************
* 参数说明：	x，		绘制字符的起始位置
*				y，		同上
*				nChar，	要绘制的单个字符，可以是中文或者英文
*				clr，	绘制字符用的颜色，在这个例子里我们没有
*						编写对应的代码
*************************************************************/
void CDotMatrixDlg::DrawChar(int x, int y, char *nChar, COLORREF clr)
{
	register i,j,k;						// for quick loop

	unsigned long location = 0;			// for chinese chars's location
	unsigned char qh = 0,
				  wh = 0;				
	
	int nGridStep = 8;					// step when draw big char

	char *p_chs16 = "CHS16",			// 16*16 chinese dotmatrix lib
		 *p_eng16 = "ASC16";			// 16*16 english dotmatrix lib

	FILE *fp_chs16,						// file pointer to upon files
		 *fp_eng16;

	char nDot_chs16[32],				// 32B dotmatrix buffer
		 nDot_eng16[16];				// 16B dotmatrix buffer


	CClientDC dc(this);
	
	if(sizeof(*nChar) > 2)				// verify the length of nChar
		return;
	
	// open the dotmatrix file
	if(	(NULL == (fp_chs16 = fopen(p_chs16, "rb"))) | 
		(NULL == (fp_eng16 = fopen(p_eng16, "rb"))))
	{
		return;
	}

	// clear data buffer
	memset(nDot_chs16, 0, sizeof(nDot_chs16));
	memset(nDot_eng16, 0, sizeof(nDot_eng16));

	if((unsigned char)*nChar > 128)	
	// draw chinese dotmatrix
	{
		qh = *nChar - 0xA0;
		wh = *(nChar + 1) - 0xA0;
		location = (94 * (qh - 1) + (wh - 1)) * 32L;			// get the start position of current char's dot-matrix
		fseek(fp_chs16, location, SEEK_SET);					// move file pointer to there
		fread(nDot_chs16, sizeof(nDot_chs16), 1, fp_chs16);		// read the dot-matrix of current char.

		for(i = 0; i < 16; i++)
			for(j = 0; j < 2; j++)
				for(k = 0; k < 8; k++)
				{
					if(((nDot_chs16[i*2 + j] >> (7-k)) & 0x1) != NULL)
					{
						dc.Ellipse(	(x + 8*j+k)*nGridStep,
										(y+i)*nGridStep,
										(x + 8*j+k+1)*nGridStep, 
										(y+i+1)*nGridStep);
					}
				}
	}
	else
	// 8*16 english
	{
		location = nChar[0] << 4 ;			// 16 byres each char in 5*8 english
		fseek(fp_eng16, location, SEEK_SET);
		fread(nDot_eng16, sizeof(nDot_eng16), 1, fp_eng16);	

		for(i = 0; i < 16; i++)
			for(k = 0; k < 8; k++)
			{
				if(((nDot_eng16[i] >> (7-k)) & 0x1) != NULL)
					dc.Ellipse(	(x + k)*nGridStep,
									(y + i)*nGridStep,
									(x + k + 1)*nGridStep, 
									(y + i + 1)*nGridStep);
			}
	}

	fclose(fp_chs16);			// don't forget to close the files.
	fclose(fp_eng16);

}

void CDotMatrixDlg::OnButton1() 
{
	// TODO: Add your control notification handler code here

	RedrawWindow();		// clear pre-draws

	UpdateData(TRUE);	// get the user inputs 
	DrawChar(5, 15, (LPSTR)(LPCTSTR)m_text, RGB(0, 0, 0));
}