oscilloscopedlg.cpp

模拟了现实中的示波器

// OscilloscopeDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Oscilloscope.h"
#include "OscilloscopeDlg.h"
#include <math.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 CBitmapDialog
{
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() : CBitmapDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

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

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

/////////////////////////////////////////////////////////////////////////////
// COscilloscopeDlg dialog

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


}

void COscilloscopeDlg::DoDataExchange(CDataExchange* pDX)
{
	CBitmapDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(COscilloscopeDlg)
	DDX_Control(pDX, IDC_BTN_SIGNALTYPE, m_btnSignalType);
	DDX_Control(pDX, IDC_BTN_CHANEL, m_btnChannel);
	DDX_Control(pDX, IDC_SCROLLBAR, m_ScrollBar);
	DDX_Control(pDX, IDC_BTN_FREQSAMPLE, m_btnFreqSample);
	DDX_Control(pDX, IDC_BTN_WIDTH, m_btnWidth);
	DDX_Control(pDX, IDC_BTN_PHASE, m_btnPhase);
	DDX_Control(pDX, IDC_BTN_OFFSET, m_btnOffset);
	DDX_Control(pDX, IDC_BTN_AMPLITUDE, m_btnAmplitude);
	DDX_Control(pDX, IDC_BTN_FREQSIGNAL, m_btnFreqSignal);
	DDX_Control(pDX, IDOK, m_OkRndBtn);
	DDX_Control(pDX, IDC_START, m_StartRndBtn);
	DDX_Control(pDX, IDC_CHTWO, m_ChTwoRndBtn);
	DDX_Control(pDX, IDC_CHTHREE, m_ChThreeRndBtn);
	DDX_Control(pDX, IDC_CHONE, m_ChOneRndBtn);
	DDX_Control(pDX, IDC_CURVE, m_ctrlCurveFrame);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(COscilloscopeDlg, CBitmapDialog)
	//{{AFX_MSG_MAP(COscilloscopeDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_BN_CLICKED(IDC_START, OnStart)
	ON_WM_TIMER()
	ON_BN_CLICKED(IDC_SELECTCOLOR, OnSelectcolor)
	ON_CBN_SELCHANGE(IDC_CMB_CHANNEL, OnSelchangeCmbChannel)
	ON_CBN_SELCHANGE(IDC_CMB_SIGNALTYPE, OnSelchangeCmbSignaltype)
	ON_WM_SIZE()
	ON_BN_CLICKED(IDC_BTN_FREQSIGNAL, OnBtnFreqsignal)
	ON_BN_CLICKED(IDC_BTN_AMPLITUDE, OnBtnAmplitude)
	ON_BN_CLICKED(IDC_BTN_OFFSET, OnBtnOffset)
	ON_BN_CLICKED(IDC_BTN_PHASE, OnBtnPhase)
	ON_BN_CLICKED(IDC_BTN_WIDTH, OnBtnWidth)
	ON_BN_CLICKED(IDC_BTN_FREQSAMPLE, OnBtnFreqsample)
	ON_WM_HSCROLL()
	ON_BN_CLICKED(IDC_BTN_CHANEL, OnBtnChanel)
	ON_BN_CLICKED(IDC_BTN_SIGNALTYPE, OnBtnSignaltype)
	//}}AFX_MSG_MAP
	ON_CONTROL_RANGE(BN_CLICKED, IDC_CHONE, IDC_CHTHREE, OnChannel)
	ON_WM_NCHITTEST()
	ON_WM_NCPAINT()
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COscilloscopeDlg message handlers

BOOL COscilloscopeDlg::OnInitDialog()
{
	
	CBitmapDialog::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
	SetBitmap(IDB_BACKGROUND, BITMAP_STRETCH);
	for (int i=0; i<3; i++)
	{//波形数据
		Signal[i].SignalType = 0;
		Signal[i].Frequency = 10;
		Signal[i].Phase = 0.0;
		Signal[i].Amplitude = 0.2;
		for (int j=0; j<1024; j++)
			Signal[i].Data[j] = 0.0;
		Signal[i].Number = 100;
	}
	Signal[0].Offset = 0.0;
	Signal[1].Offset = 0.6;
	Signal[2].Offset = -0.6;

	m_bStart = FALSE;//缺省为停止示波
	m_btnFreqSample.SetRange(0, 10000);
	m_btnFreqSample.SetData(1000);//缺省采样率为1000Hz
	m_nCurChannel = 0;//缺省为第一通道
	
	m_btnChannel.InitButton(IDB_CH01, IDB_CH03);
	m_btnSignalType.InitButton(IDB_TYPE01, IDB_TYPE05);
	//波形显示数据
	UINT width;
	m_ctrlCurveFrame.GetCurveWidth(width, m_nCurChannel);
	m_btnWidth.SetRange(1, 50);
	m_btnWidth.SetData(double(width));

	m_ctrlCurveFrame.GetCurveColor(m_Color, m_nCurChannel);
	//波形数据
	m_btnChannel.SetCurSel(m_nCurChannel);
	m_btnSignalType.SetCurSel(Signal[m_nCurChannel].SignalType);
	//信号频率、振幅、偏移、相位
	m_btnFreqSignal.SetRange(0.0, 100.0);
	m_btnFreqSignal.SetData(Signal[m_nCurChannel].Frequency);
	m_btnAmplitude.SetRange(0.0, 2.0);
	m_btnAmplitude.SetData(Signal[m_nCurChannel].Amplitude);
	m_btnOffset.SetRange(-1.0, 1.0);
	m_btnOffset.SetData(Signal[m_nCurChannel].Offset);
	m_btnPhase.SetRange(0, 360);
	m_btnPhase.SetData(Signal[m_nCurChannel].Phase);

	for (i=0; i<3; i++)
	{
		m_nNumPerCircle[i] = 100;
		m_nCurNumOfSample[i] = 0;
		m_bChannel[i] = FALSE;
	}
//	SaveDlgItemRect(this, IDC_FIRST, IDC_LAST);

	SCROLLINFO info;
	info.cbSize = sizeof(SCROLLINFO);
	info.fMask = SIF_ALL;
	info.nMin = 0;
	info.nMax = 5;
	info.nPage = 2;
	info.nPos = 0;
	info.nTrackPos = 2;
	
	m_ScrollBar.SetScrollInfo(&info);
	nTimes = 0;
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void COscilloscopeDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CBitmapDialog::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 COscilloscopeDlg::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
	{
		CBitmapDialog::OnPaint();
		//绘制客户区
//		DrawClient(this);
//		DrawNCClient(this);
	
		CPen pen;
		CPen *pOldPen;
		CBrush brush;
		CBrush *pOldBrush;
		pen.CreateStockObject(NULL_PEN);

		CWnd *pWnd;
		CRect r;
		CDC *pDC;

		brush.CreateSolidBrush(m_Color);
		pWnd = GetDlgItem(IDC_COLOR);
		pWnd->GetClientRect(&r);
		pDC = pWnd->GetDC();
		pOldPen = pDC->SelectObject(&pen);		
		pOldBrush = pDC->SelectObject(&brush);
		
		pDC->Rectangle(&r);
		pDC->SelectObject(pOldPen);
		pDC->SelectObject(pOldBrush);
		brush.DeleteObject();
		pWnd->ReleaseDC(pDC);
		
	}
}

void COscilloscopeDlg::OnStart() 
{
	m_StartRndBtn.SetLighted(!m_StartRndBtn.GetLightedState());

	// TODO: Add your control notification handler code here
	if (!m_bStart)
	{
		//m_ctrlCurveFrame.SetCurveChannel(TRUE,FALSE,FALSE);
		int n = int(100*1000/m_btnFreqSample.GetData());
		SetTimer(10, 100 , NULL);
		GetDlgItem(IDC_START)->SetWindowText("停止");
	}
	else
	{
		KillTimer(10);
		GetDlgItem(IDC_START)->SetWindowText("示波");
	}
	m_bStart = !m_bStart;
}

void COscilloscopeDlg::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	for (int i=0; i<3; i++)
	{
		if(m_bChannel[i])
		{
			if (m_nCurNumOfSample[i] >= m_nNumPerCircle[i])
 				m_nCurNumOfSample[i] %= m_nNumPerCircle[i];

			CreateWave(
				Signal[i].SignalType,
				m_nCurNumOfSample[i],
				Signal[i].Number,
				Signal[i].Amplitude,
				Signal[i].Frequency,
				m_btnFreqSample.GetData(),
				Signal[i].Phase,
				Signal[i].Offset,
				Signal[i].Data);
			m_nCurNumOfSample[i] += Signal[i].Number;
			//存储数据以备回顾所用
		}
	}
	m_ctrlCurveFrame.DrawCurve(Signal[0].Data, Signal[0].Number,
							   Signal[1].Data, Signal[1].Number,
							   Signal[2].Data, Signal[2].Number,
							   m_btnFreqSample.GetData());
	SaveSignal(Signal[0], Signal[1],Signal[2]);

	CBitmapDialog::OnTimer(nIDEvent);
}

void COscilloscopeDlg::OnSelectcolor() 
{
	// TODO: Add your control notification handler code here
	CColorDialog dlg(m_Color,CC_FULLOPEN);
	if (dlg.DoModal() == IDOK)
	{
		m_Color = dlg.GetColor();
		SendMessage(WM_PAINT);	
		UpdateData(TRUE);
		m_ctrlCurveFrame.SetCurveColor(m_Color, m_nCurChannel);
	}
}

void COscilloscopeDlg::OnSelchangeCmbChannel() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	//保存前一通道的数据
	//波形显示数据
	m_ctrlCurveFrame.SetCurveWidth(UINT(m_btnWidth.GetData()), m_nCurChannel);