Calculating Business Hours

/////////////////////////////////////////////////////////////////////////////
// WorkTimeDlg.cpp : implementation file
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "WorkTime.h"
#include "WorkTimeDlg.h"
#include "RPCalcBusinessHours.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()

/////////////////////////////////////////////////////////////////////////////
// CWorkTimeDlg dialog

CWorkTimeDlg::CWorkTimeDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CWorkTimeDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWorkTimeDlg)
	m_ctEnd = 0;
	m_ctStart = 0;
	m_csBusHours = _T("");
	m_IsUTC = FALSE;
	m_ctEndTime = 0;
	m_ctStartTime = 0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

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

void CWorkTimeDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWorkTimeDlg)
	DDX_DateTimeCtrl(pDX, IDC_DT_END, m_ctEnd);
	DDX_DateTimeCtrl(pDX, IDC_DT_START, m_ctStart);
	DDX_Text(pDX, IDC_ED_BUSHOURS, m_csBusHours);
	DDX_Check(pDX, IDC_CHECK_UTC, m_IsUTC);
	DDX_DateTimeCtrl(pDX, IDC_DT_TIMEEND, m_ctEndTime);
	DDX_DateTimeCtrl(pDX, IDC_DT_TIMESTART, m_ctStartTime);
	//}}AFX_DATA_MAP
}

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

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

/////////////////////////////////////////////////////////////////////////////
// CWorkTimeDlg message handlers

BOOL CWorkTimeDlg::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
	
	SYSTEMTIME systime;
	CTime ct = CTime::GetCurrentTime();
	
	// set datatimepickers to current date
	if (ct.GetAsSystemTime(systime))
	{
		::SendMessage(GetDlgItem(IDC_DT_START)->m_hWnd, DTM_SETSYSTEMTIME, (WPARAM) GDT_VALID, (LPARAM) &systime);
		::SendMessage(GetDlgItem(IDC_DT_END)->m_hWnd, DTM_SETSYSTEMTIME, (WPARAM) GDT_VALID, (LPARAM) &systime);
	}

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

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

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

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

void CWorkTimeDlg::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();
	}
}

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

HCURSOR CWorkTimeDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

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

void CWorkTimeDlg::OnButton1() 
{
	UpdateData(TRUE);

	double	dBusMinutes		= 0.0;
	double	OverAllHours	= 0.0;

	// initialize our temp times with midnight values
	CTime ctTempStart(m_ctStart.GetYear(), m_ctStart.GetMonth(), m_ctStart.GetDay(), 0, 0, 0);
	CTime ctTempEnd(m_ctEnd.GetYear(), m_ctEnd.GetMonth(), m_ctEnd.GetDay(), 0, 0, 0);
	
	ctTempStart += CTimeSpan(0, m_ctStartTime.GetHour(), m_ctStartTime.GetMinute(), 0);
	ctTempEnd	+= CTimeSpan(0, m_ctEndTime.GetHour(), m_ctEndTime.GetMinute(), 0);

	dBusMinutes = CalculateBusinessMinutes(ctTempStart, ctTempEnd, m_IsUTC);
	
	OverAllHours = dBusMinutes / 60;
	m_csBusHours.Format(_T("%1.2f"), OverAllHours);

	UpdateData(FALSE);
}

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