BattViewerDlg.cpp

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//
// Copyright 2003 Sony Corporation 
//
// Permission to use, copy, modify, and redistribute this software for
// non-commercial use is hereby granted.
//
// This software is provided "as is" without warranty of any kind,
// either expressed or implied, including but not limited to the
// implied warranties of fitness for a particular purpose.
//
// BattViewerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "BattViewer.h"
#include "BattViewerDlg.h"


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

static const char MapName[]           = "MemMap1";
static const char MutexName[]         = "Mutex1";

// 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()

// CBattViewerDlg dialog

CBattViewerDlg::CBattViewerDlg(CWnd* pParent /*=NULL*/)
        : CDialog(CBattViewerDlg::IDD, pParent)
{
        //{{AFX_DATA_INIT(CBattViewerDlg)
                // NOTE: the ClassWizard will add member initialization here
        //}}AFX_DATA_INIT
        // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
        m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
        m_hMem1 = NULL;
        m_pShrMem1 = NULL;
    m_hMutex = NULL;
}

void CBattViewerDlg::DoDataExchange(CDataExchange* pDX)
{
        CDialog::DoDataExchange(pDX);
        //{{AFX_DATA_MAP(CBattViewerDlg)
        DDX_Control(pDX, IDC_PROGRESS1, m_battCapacity);
        //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CBattViewerDlg, CDialog)
        //{{AFX_MSG_MAP(CBattViewerDlg)
        ON_WM_SYSCOMMAND()
        ON_WM_PAINT()
        ON_WM_QUERYDRAGICON()
        //}}AFX_MSG_MAP
        ON_MESSAGE(WM_USER + 1, LocalUpdate)
END_MESSAGE_MAP()

// CBattViewerDlg message handlers

BOOL CBattViewerDlg::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_battCapacity.SetRange(0, 100);
        m_battCapacity.SetPos(0);
        m_battCapacity.SetStep(1);

        UpdateBattCapacity();

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

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


BOOL CBattViewerDlg::UpdateBattCapacity()
{
        int capacity;
        if (!(m_hMutex = CreateMutex(NULL, FALSE, MutexName))) {
                return FALSE;
        }
        if (!m_pShrMem1) {
        HANDLE MapFileHandle = (HANDLE) 0xFFFFFFFF;
                WaitForSingleObject(m_hMutex, INFINITE);
                if (!(m_hMem1 = CreateFileMapping(MapFileHandle, NULL, PAGE_READWRITE, 0, 4096, MapName))) {
                        ReleaseMutex(m_hMutex);
                        return FALSE;
                }
                if (!(m_pShrMem1 = MapViewOfFile(m_hMem1, FILE_MAP_WRITE | FILE_MAP_READ, 0, 0, 4096))) {
                        ReleaseMutex(m_hMutex);
                        return FALSE;
                }
                m_pUnionShrMem.p_v = m_pShrMem1;
                m_pUnionShrMem.p_d->hWnd = GetSafeHwnd();
                m_pUnionShrMem.p_d->cap = 0;
                ReleaseMutex(m_hMutex);
        }
        WaitForSingleObject(m_hMutex, INFINITE);
        capacity = m_pUnionShrMem.p_d->cap;
        if (!m_pUnionShrMem.p_d->hWnd)
                m_pUnionShrMem.p_d->hWnd = GetSafeHwnd();
        ReleaseMutex(m_hMutex);
        m_battCapacity.SetPos(capacity);
        return TRUE;
}

LRESULT CBattViewerDlg::LocalUpdate(WPARAM a, LPARAM b)
{
        // Windows message (WM_USER + 1) comes from BattChecker program
        UpdateBattCapacity();
        return 0;
}

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