logg.cpp

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C++ 代码 · 共 1,225 行 · 第 1/3 页

    // Note: Doing this, this way, triggered a nasty bug in
    //       wxTopLevelWindowGTK::GtkOnSize which took -1 literally once
    //       either of maxWidth or maxHeight was set.  This symptom has been
    //       fixed there, but it is a problem that remains as long as we allow
    //       unchecked access to the internal size members.  We really need to
    //       encapuslate window sizes more cleanly and make it clear when -1 will
    //       be substituted and when it will not.

    wxSize size = sizerTop->Fit(this);
    m_maxHeight = size.y;
    SetSizeHints(size.x, size.y, m_maxWidth, m_maxHeight);

#ifndef __SMARTPHONE__
    btnOk->SetFocus();
#endif

    Centre();

    if (isPda)
    {
        // Move up the screen so that when we expand the dialog,
        // there's enough space.
        Move(wxPoint(GetPosition().x, GetPosition().y / 2));
    }
}

void wxLogDialog::CreateDetailsControls()
{
#ifndef __SMARTPHONE__
    // create the save button and separator line if possible
#if wxUSE_FILE
    m_btnSave = new wxButton(this, wxID_SAVE);
#endif // wxUSE_FILE

#if wxUSE_STATLINE
    m_statline = new wxStaticLine(this, wxID_ANY);
#endif // wxUSE_STATLINE

#endif // __SMARTPHONE__

    // create the list ctrl now
    m_listctrl = new wxListCtrl(this, wxID_ANY,
                                wxDefaultPosition, wxDefaultSize,
                                wxSUNKEN_BORDER |
                                wxLC_REPORT |
                                wxLC_NO_HEADER |
                                wxLC_SINGLE_SEL);
#ifdef __WXWINCE__
    // This maks a big aesthetic difference on WinCE but I
    // don't want to risk problems on other platforms
    m_listctrl->Hide();
#endif

    // no need to translate these strings as they're not shown to the
    // user anyhow (we use wxLC_NO_HEADER style)
    m_listctrl->InsertColumn(0, _T("Message"));
    m_listctrl->InsertColumn(1, _T("Time"));

    // prepare the imagelist
    static const int ICON_SIZE = 16;
    wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);

    // order should be the same as in the switch below!
    static const wxChar* icons[] =
    {
        wxART_ERROR,
        wxART_WARNING,
        wxART_INFORMATION
    };

    bool loadedIcons = true;

    for ( size_t icon = 0; icon < WXSIZEOF(icons); icon++ )
    {
        wxBitmap bmp = wxArtProvider::GetBitmap(icons[icon], wxART_MESSAGE_BOX,
                                                wxSize(ICON_SIZE, ICON_SIZE));

        // This may very well fail if there are insufficient colours available.
        // Degrade gracefully.
        if ( !bmp.Ok() )
        {
            loadedIcons = false;

            break;
        }

        imageList->Add(bmp);
    }

    m_listctrl->SetImageList(imageList, wxIMAGE_LIST_SMALL);

    // and fill it
    wxString fmt = wxLog::GetTimestamp();
    if ( !fmt )
    {
        // default format
        fmt = _T("%c");
    }

    size_t count = m_messages.GetCount();
    for ( size_t n = 0; n < count; n++ )
    {
        int image;

        if ( loadedIcons )
        {
            switch ( m_severity[n] )
            {
                case wxLOG_Error:
                    image = 0;
                    break;

                case wxLOG_Warning:
                    image = 1;
                    break;

                default:
                    image = 2;
            }
        }
        else // failed to load images
        {
            image = -1;
        }

        m_listctrl->InsertItem(n, m_messages[n], image);
        m_listctrl->SetItem(n, 1, TimeStamp(fmt, (time_t)m_times[n]));
    }

    // let the columns size themselves
    m_listctrl->SetColumnWidth(0, wxLIST_AUTOSIZE);
    m_listctrl->SetColumnWidth(1, wxLIST_AUTOSIZE);

    // calculate an approximately nice height for the listctrl
    int height = GetCharHeight()*(count + 4);

    // but check that the dialog won't fall fown from the screen
    //
    // we use GetMinHeight() to get the height of the dialog part without the
    // details and we consider that the "Save" button below and the separator
    // line (and the margins around it) take about as much, hence double it
    int heightMax = wxGetDisplaySize().y - GetPosition().y - 2*GetMinHeight();

    // we should leave a margin
    heightMax *= 9;
    heightMax /= 10;

    m_listctrl->SetSize(wxDefaultCoord, wxMin(height, heightMax));
}

void wxLogDialog::OnListSelect(wxListEvent& event)
{
    // we can't just disable the control because this looks ugly under Windows
    // (wrong bg colour, no scrolling...), but we still want to disable
    // selecting items - it makes no sense here
    m_listctrl->SetItemState(event.GetIndex(), 0, wxLIST_STATE_SELECTED);
}

void wxLogDialog::OnOk(wxCommandEvent& WXUNUSED(event))
{
    EndModal(wxID_OK);
}

#if wxUSE_FILE

void wxLogDialog::OnSave(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_FILEDLG
    wxFile file;
    int rc = OpenLogFile(file, NULL, this);
    if ( rc == -1 )
    {
        // cancelled
        return;
    }

    bool ok = rc != 0;

    wxString fmt = wxLog::GetTimestamp();
    if ( !fmt )
    {
        // default format
        fmt = _T("%c");
    }

    size_t count = m_messages.GetCount();
    for ( size_t n = 0; ok && (n < count); n++ )
    {
        wxString line;
        line << TimeStamp(fmt, (time_t)m_times[n])
             << _T(": ")
             << m_messages[n]
             << wxTextFile::GetEOL();

        ok = file.Write(line);
    }

    if ( ok )
        ok = file.Close();

    if ( !ok )
        wxLogError(_("Can't save log contents to file."));
#endif // wxUSE_FILEDLG
}

#endif // wxUSE_FILE

void wxLogDialog::OnDetails(wxCommandEvent& WXUNUSED(event))
{
    wxSizer *sizer = GetSizer();

    if ( m_showingDetails )
    {
#ifdef __SMARTPHONE__
        SetRightMenu(wxID_MORE, ms_details + EXPAND_SUFFIX);
#else
        m_btnDetails->SetLabel(ms_details + EXPAND_SUFFIX);
#endif

        sizer->Detach( m_listctrl );

#ifndef __SMARTPHONE__

#if wxUSE_STATLINE
        sizer->Detach( m_statline );
#endif // wxUSE_STATLINE

#if wxUSE_FILE
        sizer->Detach( m_btnSave );
#endif // wxUSE_FILE

#endif // __SMARTPHONE__
    }
    else // show details now
    {
#ifdef __SMARTPHONE__
        SetRightMenu(wxID_MORE, wxString(_T("<< ")) + ms_details);
#else
        m_btnDetails->SetLabel(wxString(_T("<< ")) + ms_details);
#endif

        if ( !m_listctrl )
        {
            CreateDetailsControls();
        }

#if wxUSE_STATLINE && !defined(__SMARTPHONE__)
        bool isPda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
        if (!isPda)
            sizer->Add(m_statline, 0, wxEXPAND | (wxALL & ~wxTOP), MARGIN);
#endif // wxUSE_STATLINE

        sizer->Add(m_listctrl, 1, wxEXPAND | (wxALL & ~wxTOP), MARGIN);

        // VZ: this doesn't work as this becomes the initial (and not only
        //     minimal) listctrl height as well - why?
#if 0
        // allow the user to make the dialog shorter than its initial height -
        // without this it wouldn't work as the list ctrl would have been
        // incompressible
        sizer->SetItemMinSize(m_listctrl, 100, 3*GetCharHeight());
#endif // 0

#if wxUSE_FILE && !defined(__SMARTPHONE__)
        sizer->Add(m_btnSave, 0, wxALIGN_RIGHT | (wxALL & ~wxTOP), MARGIN);
#endif // wxUSE_FILE
    }

    m_showingDetails = !m_showingDetails;

    // in any case, our size changed - relayout everything and set new hints
    // ---------------------------------------------------------------------

    // we have to reset min size constraints or Fit() would never reduce the
    // dialog size when collapsing it and we have to reset max constraint
    // because it wouldn't expand it otherwise

    m_minHeight =
    m_maxHeight = -1;

    // wxSizer::FitSize() is private, otherwise we might use it directly...
    wxSize sizeTotal = GetSize(),
           sizeClient = GetClientSize();

    wxSize size = sizer->GetMinSize();
    size.x += sizeTotal.x - sizeClient.x;
    size.y += sizeTotal.y - sizeClient.y;

    // we don't want to allow expanding the dialog in vertical direction as
    // this would show the "hidden" details but we can resize the dialog
    // vertically while the details are shown
    if ( !m_showingDetails )
        m_maxHeight = size.y;

    SetSizeHints(size.x, size.y, m_maxWidth, m_maxHeight);

#ifdef __WXWINCE__
    if (m_showingDetails)
        m_listctrl->Show();
#endif

    // don't change the width when expanding/collapsing
    SetSize(wxDefaultCoord, size.y);

#ifdef __WXGTK__
    // VS: this is necessary in order to force frame redraw under
    // WindowMaker or fvwm2 (and probably other broken WMs).
    // Otherwise, detailed list wouldn't be displayed.
    Show();
#endif // wxGTK
}

wxLogDialog::~wxLogDialog()
{
    if ( m_listctrl )
    {
        delete m_listctrl->GetImageList(wxIMAGE_LIST_SMALL);
    }
}

#endif // wxUSE_LOG_DIALOG

#if wxUSE_FILE && wxUSE_FILEDLG

// pass an uninitialized file object, the function will ask the user for the
// filename and try to open it, returns true on success (file was opened),
// false if file couldn't be opened/created and -1 if the file selection
// dialog was cancelled
static int OpenLogFile(wxFile& file, wxString *pFilename, wxWindow *parent)
{
    // get the file name
    // -----------------
    wxString filename = wxSaveFileSelector(wxT("log"), wxT("txt"), wxT("log.txt"), parent);
    if ( !filename ) {
        // cancelled
        return -1;
    }

    // open file
    // ---------
    bool bOk wxDUMMY_INITIALIZE(false);
    if ( wxFile::Exists(filename) ) {
        bool bAppend = false;
        wxString strMsg;
        strMsg.Printf(_("Append log to file '%s' (choosing [No] will overwrite it)?"),
                      filename.c_str());
        switch ( wxMessageBox(strMsg, _("Question"),
                              wxICON_QUESTION | wxYES_NO | wxCANCEL) ) {
            case wxYES:
                bAppend = true;
                break;

            case wxNO:
                bAppend = false;
                break;

            case wxCANCEL:
                return -1;

            default:
                wxFAIL_MSG(_("invalid message box return value"));
        }

        if ( bAppend ) {
            bOk = file.Open(filename, wxFile::write_append);
        }
        else {
            bOk = file.Create(filename, true /* overwrite */);
        }
    }
    else {
        bOk = file.Create(filename);
    }

    if ( pFilename )
        *pFilename = filename;

    return bOk;
}

#endif // wxUSE_FILE

#endif // !(wxUSE_LOGGUI || wxUSE_LOGWINDOW)

#if wxUSE_LOG && wxUSE_TEXTCTRL

// ----------------------------------------------------------------------------
// wxLogTextCtrl implementation
// ----------------------------------------------------------------------------

wxLogTextCtrl::wxLogTextCtrl(wxTextCtrl *pTextCtrl)
{
    m_pTextCtrl = pTextCtrl;
}

void wxLogTextCtrl::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
{
    wxString msg;
    TimeStamp(&msg);

    msg << szString << wxT('\n');
    m_pTextCtrl->AppendText(msg);
}

#endif // wxUSE_LOG && wxUSE_TEXTCTRL