tcscandlg.cpp

通用的扫描仪测试接口

// TcScanDlg.cpp : implementation file
//

#include "stdafx.h"
#include "TcScan.h"
#include "TcScanDlg.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 void OnLButtonDown(UINT nFlags, CPoint point);
	//}}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)
	ON_WM_LBUTTONDOWN()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CAboutDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CDialog::OnLButtonDown(nFlags, point);
	PostMessage(WM_NCLBUTTONDOWN, HTCAPTION, MAKELPARAM(point.x, point.y));
}

/////////////////////////////////////////////////////////////////////////////
// CTcScanDlg dialog

// 截去给定路径文件名的扩展名及符号.
void CutExtName(char *chFile)
{
	if(!chFile || !chFile[0]) return;
	int nLen = lstrlen(chFile);
	for(int i=nLen-1; i>=0; i--)
	{
		if(chFile[i] == '\\') break;
		if(chFile[i] == '.') {chFile[i] = '\0'; break;}
	}
}

// 为给定的路径加上扫描保存标识
void AddScanID(char *chFile)
{
	if(!chFile) return;
	const char chID[] = "TcScan";
	int k = lstrlen(chFile) - 1;
	if(k < 0) lstrcpy(chFile, chID);
	else if(chFile[k] == ':' || chFile[k] == '\\')
		lstrcpy(&chFile[k + 1], chID);
}

CTcScanDlg::CTcScanDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTcScanDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTcScanDlg)
	m_bCheckScanner = FALSE;
	m_nScanOperate = 0;
	m_nSlctPageSize = 1;
	m_nImageColor = 1;
	m_nScanWidth = 210;
	m_nScanTop = 0;
	m_nScanLeft = 0;
	m_nScanHeight = 297;
	m_nScanBright = 0;
	m_nScanContrast = 0;
	m_nScanDPI = 400;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	GetModuleFileName(NULL, m_chSaveAs, MAX_PATH);
	CutExtName(m_chSaveAs); AddScanID(m_chSaveAs);
	m_chInfoBuff[0] = '\0';
	m_bDriverGood = FALSE;
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTcScanDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTcScanDlg)
	DDX_Check(pDX, IDC_CHECK_SCANNER, m_bCheckScanner);
	DDX_Radio(pDX, IDC_SCAN_OPERATE, m_nScanOperate);
	DDX_CBIndex(pDX, IDC_SLCT_PAGESIZE, m_nSlctPageSize);
	DDX_Radio(pDX, IDC_IMAGE_COLOR, m_nImageColor);
	DDX_Text(pDX, IDC_EDIT_WIDTH, m_nScanWidth);
	DDV_MinMaxInt(pDX, m_nScanWidth, 1, 1000);
	DDX_Text(pDX, IDC_EDIT_TOP, m_nScanTop);
	DDV_MinMaxInt(pDX, m_nScanTop, 0, 999);
	DDX_Text(pDX, IDC_EDIT_LEFT, m_nScanLeft);
	DDV_MinMaxInt(pDX, m_nScanLeft, 0, 999);
	DDX_Text(pDX, IDC_EDIT_HEIGHT, m_nScanHeight);
	DDV_MinMaxInt(pDX, m_nScanHeight, 1, 1000);
	DDX_Text(pDX, IDC_EDIT_BRIGHT, m_nScanBright);
	DDV_MinMaxInt(pDX, m_nScanBright, 0, 1000);
	DDX_Text(pDX, IDC_EDIT_CONTRAST, m_nScanContrast);
	DDV_MinMaxInt(pDX, m_nScanContrast, 0, 1000);
	DDX_Text(pDX, IDC_EDIT_DPI, m_nScanDPI);
	DDV_MinMaxInt(pDX, m_nScanDPI, 1, 5000);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTcScanDlg, CDialog)
	//{{AFX_MSG_MAP(CTcScanDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_LBUTTONDOWN()
	ON_BN_CLICKED(IDC_BUTT_SLCTFILE, OnButtSlctfile)
	ON_WM_CTLCOLOR()
	ON_BN_CLICKED(IDC_BUTT_SCANNER, OnButtScanner)
	ON_WM_TIMER()
	ON_CBN_SELCHANGE(IDC_SLCT_PAGESIZE, OnSelchangeSlctPagesize)
	ON_BN_CLICKED(IDC_BUTT_DEFAULT, OnButtDefault)
	ON_WM_DESTROY()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTcScanDlg message handlers

// 定时器自动恢复时间到
void CTcScanDlg::OnTimer(UINT nIDEvent) 
{
	if(nIDEvent == ID_STATUS_TIMER)
	{
		KillTimer(ID_STATUS_TIMER);
		if(m_bDriverGood) MsgOut(ALL_RIGHT_STRING);
		else MsgOut(GetErrorInfo(Err_TcScan_Dll));
	}
	CDialog::OnTimer(nIDEvent);
}

// 用sprintf语法将信息写入状态条
void CTcScanDlg::MsgOut(const char *fmt, ...)
{
	KillTimer(ID_STATUS_TIMER);
	va_list argptr;
	va_start(argptr, fmt);
	vsprintf(m_chInfoBuff, fmt, argptr);
	va_end(argptr);
	SetDlgItemText(IDC_STATE_BAR, m_chInfoBuff);
	SetTimer(ID_STATUS_TIMER, 8000, NULL);
}

// 用sprintf语法将信息写入状态条
void CTcScanDlg::TimeOut(const char *fmt, ...)
{
	va_list argptr;
	va_start(argptr, fmt);
	vsprintf(m_chInfoBuff, fmt, argptr);
	va_end(argptr);
	SetDlgItemText(IDC_TIMER_CNT, m_chInfoBuff);
}

// 关闭对话框
void CTcScanDlg::OnDestroy() 
{
	KillTimer(ID_STATUS_TIMER);
	CDialog::OnDestroy();
}

// 初始化对话框
BOOL CTcScanDlg::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
	m_bDriverGood = (BOOL)(TcScan && SelectScanner);
	if(m_bDriverGood) MsgOut(ALL_RIGHT_STRING);
	else MsgOut(GetErrorInfo(Err_TcScan_Dll));
	SetDlgItemText(IDC_SCAN_FILE, m_chSaveAs);
	m_BackBrush.CreateSolidBrush(RGB(0xA5, 0xCB, 0xF7));

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTcScanDlg::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 CTcScanDlg::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 CTcScanDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

// 屏蔽Esc键，不与响应
BOOL CTcScanDlg::PreTranslateMessage(MSG* pMsg) 
{
	if(pMsg->message == WM_KEYDOWN)
	{
		switch(pMsg->wParam)
		{
		case VK_ESCAPE: return TRUE;
		}
	}
	return CDialog::PreTranslateMessage(pMsg);
}

// 点击左键，可以移动窗体
void CTcScanDlg::OnLButtonDown(UINT nFlags, CPoint point) 
{
	CDialog::OnLButtonDown(nFlags, point);
	PostMessage(WM_NCLBUTTONDOWN, HTCAPTION, MAKELPARAM(point.x, point.y));
}

// 改变对话框的背景色(淡蓝色)
HBRUSH CTcScanDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	if(nCtlColor == CTLCOLOR_DLG)
		return ((HBRUSH)m_BackBrush.GetSafeHandle());
	return CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
}

/////////////////////////////////////////////////////////////////////////////

// 用户决定使用默认的扫描参数
void CTcScanDlg::OnButtDefault() 
{
	m_bCheckScanner = FALSE;
	m_nScanOperate = 0;
	m_nSlctPageSize = 1;
	m_nImageColor = 1;
	m_nScanWidth = 210;
	m_nScanTop = 0;
	m_nScanLeft = 0;
	m_nScanHeight = 297;
	m_nScanBright = 0;
	m_nScanContrast = 0;
	m_nScanDPI = 400;
	UpdateData(FALSE);
	if(m_bDriverGood) MsgOut(ALL_RIGHT_STRING);
	else MsgOut(GetErrorInfo(Err_TcScan_Dll));
}

// 用户使用标准纸张大小置宽和高
void CTcScanDlg::OnSelchangeSlctPagesize() 
{
	if(!UpdateData(TRUE)) return;
	m_nScanWidth = g_nScanWidth[m_nSlctPageSize];
	m_nScanHeight = g_nScanHeight[m_nSlctPageSize];
	UpdateData(FALSE);
}

// 选择扫描后的图像输出目录及标识
void CTcScanDlg::OnButtSlctfile() 
{
	CFileDialog fd(FALSE, NULL, m_chSaveAs, OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,
		"All files (*.*)|*.*||");
	if(fd.DoModal() != IDOK) return;				// 用户已经取消
	lstrcpy(m_chSaveAs, fd.GetPathName());
	CutExtName(m_chSaveAs); AddScanID(m_chSaveAs);
	SetDlgItemText(IDC_SCAN_FILE, m_chSaveAs);		// 显示所选路径
}

// 用户要选择扫描仪设备
void CTcScanDlg::OnButtScanner() 
{
	if(!m_bDriverGood) {MsgOut(GetErrorInfo(Err_TcScan_Dll)); return;}
	long nReturn = SelectScanner();					// 选择扫描仪设备
	if(nReturn >= 0) MsgOut("信息：成功地选择并设置了新的扫描仪设备！");
	else MsgOut(GetErrorInfo(-nReturn));
}

// 用户开始按给定方式启动扫描过程
void CTcScanDlg::OnOK() 
{
	if(!m_bDriverGood) {MsgOut(GetErrorInfo(Err_TcScan_Dll)); return;}
	if(!UpdateData(TRUE)) return; CScanSetInfo ScanSet;
	ScanSet.hMainWnd = (long)m_hWnd;				// 配置扫描参数
	ScanSet.bSelect = m_bCheckScanner ? 1 : 0;
	ScanSet.nScanning = m_nScanOperate;
	memcpy(ScanSet.nReserved, "ILOVEYOUSCK&ZHNN", 16);

	MsgOut("信息：正在进行扫描，请您稍候...");
	TimeOut("用时：0.0秒");							// 计时开始
	clock_t tmStart = clock();
	long nReturn = TcScan(m_chSaveAs,				// 保存路径
		m_nImageColor,								// 扫描色阶
		(long)(&ScanSet),							// 附加信息
		m_nScanLeft, m_nScanTop,					// 左上角坐标
		m_nScanWidth, m_nScanHeight,				// 扫描区域面积
		m_nScanDPI, m_nScanBright, m_nScanContrast);// 分辨率、亮度、对对度
	float tmDur = (float)(clock() - tmStart) / CLOCKS_PER_SEC;
	TimeOut("用时：%2.1f秒", tmDur);				// 统计用时

	if(nReturn < 0)									// 扫描过程异常
	{
		MsgOut("%s 已扫描 %d 张", GetErrorInfo(-nReturn),
			ScanSet.nReserved[0]); return;
	}
	else if(nReturn > 0)							// 扫描操作成功
	{
		char chOld[MAX_PATH] = "", chNew[MAX_PATH] = "";
		lstrcpy(chOld, m_chSaveAs); lstrcpy(chNew, m_chSaveAs);
		long i = 0, nLen = lstrlen(m_chSaveAs);

		for(i=1; i<=nReturn; i++)					// 改文件扩展名
		{
			sprintf(&chOld[nLen], ".%d", i);
			sprintf(&chNew[nLen], "_%d.bmp", i);
			SetFileAttributes(chNew, FILE_ATTRIBUTE_ARCHIVE);
			DeleteFile(chNew); CFile::Rename(chOld, chNew);
		}
		MsgOut("信息：成功地扫描了 %d 幅图象！", nReturn);
	}		// 在TcScan.DLL中已经处理了，nReturn绝不会等于0的。
}

/////////////////////////////////////////////////////////////////////////////