// CanalCalcDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CanalCalcDlg.h"
#include "TAPI.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCanalCalcDlg dialog


CCanalCalcDlg::CCanalCalcDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCanalCalcDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCanalCalcDlg)
	m_csB = _T("4");
	m_csH = _T("4");
	m_csM = _T("0");
	m_csI = _T("6");
	m_iMode = 0;
	m_csRet = _T("");
	m_csQ = _T("");
	m_csV = _T("");
	//}}AFX_DATA_INIT
}


void CCanalCalcDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCanalCalcDlg)
	DDX_Text(pDX, IDC_EDIT_B, m_csB);
	DDX_Text(pDX, IDC_EDIT_H, m_csH);
	DDX_Text(pDX, IDC_EDIT_M, m_csM);
	DDX_CBString(pDX, IDC_COMBO_I, m_csI);
	DDX_Radio(pDX, IDC_RADIO_MODE1, m_iMode);
	DDX_Text(pDX, IDC_EDIT_RET, m_csRet);
	DDX_Text(pDX, IDC_EDIT_Q, m_csQ);
	DDX_Text(pDX, IDC_EDIT_V, m_csV);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CCanalCalcDlg, CDialog)
	//{{AFX_MSG_MAP(CCanalCalcDlg)
	ON_WM_PAINT()
	ON_BN_CLICKED(IDC_RADIO_MODE1, OnRadioMode1)
	ON_BN_CLICKED(IDC_RADIO4, OnRadio3)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCanalCalcDlg message handlers

BOOL CCanalCalcDlg::OnInitDialog() 
{
	CDialog::OnInitDialog();
	ResetMode();
	
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CCanalCalcDlg::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	DisplayStatic();
}

void CCanalCalcDlg::DisplayStatic() 
{
    CWnd* pWnd = GetDlgItem(IDC_PREVIEW);
    DrawSlide(_T("TWT(FANGGOU)"), pWnd);
}

void CCanalCalcDlg::OnOK() 
{
	UpdateData(TRUE);
    double m = _tstof(m_csM);
    double h = _tstof(m_csH);
    double b = _tstof(m_csB);
    double i = _tstof(m_csI) / 1000;
    double q = _tstof(m_csQ);
    double n = 0.013;
    double nRet(0);
    double nV(0);

    if(m_iMode == 0){
        double nTmp(0);
        nTmp = (b+m*h)*h;
        nTmp = pow(nTmp, 5.0/3.0);
        double nTmp2 = pow(i, 0.5);
        nTmp = nTmp * nTmp2;
        nTmp2 = sqrt(1+ m*m) * 2 *h + b;
        nTmp2 = pow(nTmp2, 2.0/3.0) * n;
        nRet = nTmp / nTmp2;
        nV = nRet / (b + m*h)/h;
    }
    else {
        double nTmp(0);
        nTmp = sqrt(m*m + 1)*2*h+b;
        nTmp = pow(nTmp, 4.0/3.0) * n *n*q*q;
        double nTmp2 = (b + m*h)*h;
        nTmp2 = pow(nTmp2, 10.0/3.0);
        nRet = nTmp / nTmp2 * 1000;
        nV = q / (b + m*h)/h;
    }
    m_csRet.Format(_T("%.2f"), nRet);
    m_csV.Format(_T("%.2f"), nV);
    UpdateData(FALSE);
}

void CCanalCalcDlg::OnRadioMode1() 
{
	ResetMode();
}

void CCanalCalcDlg::OnRadio3() 
{
	ResetMode();
}

void CCanalCalcDlg::ResetMode() 
{
    UpdateData(TRUE);
    CWnd *pWnd1 = GetDlgItem(IDC_STATIC_RET);
    CWnd *pWnd2 = GetDlgItem(IDC_EDIT_Q);
    CWnd *pWnd3 = GetDlgItem(IDC_COMBO_I);

    if(m_iMode == 0){
        pWnd1->SetWindowText(_T("流量Q(立方米/s)："));
        pWnd2->EnableWindow(FALSE);
        pWnd3->EnableWindow(TRUE);
    }
    else{
        pWnd3->EnableWindow(FALSE);
        pWnd2->EnableWindow(TRUE);
        pWnd1->SetWindowText(_T("坡度（千分之）："));
    }
    UpdateData(FALSE);
}