progdlgg.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 641 行 · 第 1/2 页

    sizer->Add(locsizer, 0, wxALIGN_RIGHT | wxRIGHT | wxTOP, LAYOUT_MARGIN);
    locsizer->Add(dummy);
    locsizer->Add(label, 0, wxLEFT, LAYOUT_MARGIN);
#endif

    return label;
}

// ----------------------------------------------------------------------------
// wxProgressDialog operations
// ----------------------------------------------------------------------------

bool
wxProgressDialog::Update(int value, const wxString& newmsg, bool *skip)
{
    wxASSERT_MSG( value == -1 || m_gauge, wxT("cannot update non existent dialog") );

#ifdef __WXMSW__
    value /= m_factor;
#endif // __WXMSW__

    wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );

    // fill up the gauge if value == maximum because this means that the dialog
    // is going to close and the gauge shouldn't be partly empty in this case
    if ( m_gauge && value <= m_maximum )
    {
        m_gauge->SetValue(value == m_maximum ? value : value + 1);
    }

    if ( !newmsg.empty() && newmsg != m_msg->GetLabel() )
    {
        m_msg->SetLabel(newmsg);

        wxYieldIfNeeded() ;
    }

    if ( (m_elapsed || m_remaining || m_estimated) && (value != 0) )
    {
        unsigned long elapsed = wxGetCurrentTime() - m_timeStart;
        if (    m_last_timeupdate < elapsed
             || value == m_maximum
           )
        {
            m_last_timeupdate = elapsed;
            unsigned long estimated = m_break +
                  (unsigned long)(( (double) (elapsed-m_break) * m_maximum ) / ((double)value)) ;
            if (    estimated > m_display_estimated
                 && m_ctdelay >= 0
               )
            {
                ++m_ctdelay;
            }
            else if (    estimated < m_display_estimated
                      && m_ctdelay <= 0
                    )
            {
                --m_ctdelay;
            }
            else
            {
                m_ctdelay = 0;
            }
            if (    m_ctdelay >= m_delay          // enough confirmations for a higher value
                 || m_ctdelay <= (m_delay*-1)     // enough confirmations for a lower value
                 || value == m_maximum            // to stay consistent
                 || elapsed > m_display_estimated // to stay consistent
                 || ( elapsed > 0 && elapsed < 4 ) // additional updates in the beginning
               )
            {
                m_display_estimated = estimated;
                m_ctdelay = 0;
            }
        }

        long display_remaining = m_display_estimated - elapsed;
        if ( display_remaining < 0 )
        {
            display_remaining = 0;
        }

        SetTimeLabel(elapsed, m_elapsed);
        SetTimeLabel(m_display_estimated, m_estimated);
        SetTimeLabel(display_remaining, m_remaining);
    }

    if ( value == m_maximum )
    {
        if ( m_state == Finished )
        {
            // ignore multiple calls to Update(m_maximum): it may sometimes be
            // troublesome to ensure that Update() is not called twice with the
            // same value (e.g. because of the rounding errors) and if we don't
            // return now we're going to generate asserts below
            return true;
        }

        // so that we return true below and that out [Cancel] handler knew what
        // to do
        m_state = Finished;
        if( !(GetWindowStyle() & wxPD_AUTO_HIDE) )
        {
            EnableClose();
            DisableSkip();
#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
            EnableCloseButton();
#endif // __WXMSW__

            if ( newmsg.empty() )
            {
                // also provide the finishing message if the application didn't
                m_msg->SetLabel(_("Done."));
            }

            wxYieldIfNeeded() ;

            (void)ShowModal();
        }
        else // auto hide
        {
            // reenable other windows before hiding this one because otherwise
            // Windows wouldn't give the focus back to the window which had
            // been previously focused because it would still be disabled
            ReenableOtherWindows();

            Hide();
        }
    }
    else
    {
        // we have to yield because not only we want to update the display but
        // also to process the clicks on the cancel and skip buttons
        wxYieldIfNeeded() ;

        if ( (m_skip) && (skip != NULL) && (*skip == false) )
        {
            *skip = true;
            m_skip = false;
            EnableSkip();
        }
    }

    // update the display in case yielding above didn't do it
    Update();

    return m_state != Canceled;
}

void wxProgressDialog::Resume()
{
    m_state = Continue;
    m_ctdelay = m_delay; // force an update of the elapsed/estimated/remaining time
    m_break += wxGetCurrentTime()-m_timeStop;

    EnableAbort();
    EnableSkip();
    m_skip = false;
}

bool wxProgressDialog::Show( bool show )
{
    // reenable other windows before hiding this one because otherwise
    // Windows wouldn't give the focus back to the window which had
    // been previously focused because it would still be disabled
    if(!show)
        ReenableOtherWindows();

    return wxDialog::Show(show);
}

// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------

void wxProgressDialog::OnCancel(wxCommandEvent& event)
{
    if ( m_state == Finished )
    {
        // this means that the count down is already finished and we're being
        // shown as a modal dialog - so just let the default handler do the job
        event.Skip();
    }
    else
    {
        // request to cancel was received, the next time Update() is called we
        // will handle it
        m_state = Canceled;

        // update the buttons state immediately so that the user knows that the
        // request has been noticed
        DisableAbort();
        DisableSkip();

        // save the time when the dialog was stopped
        m_timeStop = wxGetCurrentTime();
    }
}

void wxProgressDialog::OnSkip(wxCommandEvent& WXUNUSED(event))
{
    DisableSkip();
    m_skip = true;
}

void wxProgressDialog::OnClose(wxCloseEvent& event)
{
    if ( m_state == Uncancelable )
    {
        // can't close this dialog
        event.Veto();
    }
    else if ( m_state == Finished )
    {
        // let the default handler close the window as we already terminated
        event.Skip();
    }
    else
    {
        // next Update() will notice it
        m_state = Canceled;
        DisableAbort();
        DisableSkip();

        m_timeStop = wxGetCurrentTime();
    }
}

// ----------------------------------------------------------------------------
// destruction
// ----------------------------------------------------------------------------

wxProgressDialog::~wxProgressDialog()
{
    // normally this should have been already done, but just in case
    ReenableOtherWindows();
}

void wxProgressDialog::ReenableOtherWindows()
{
    if ( GetWindowStyle() & wxPD_APP_MODAL )
    {
        delete m_winDisabler;
        m_winDisabler = (wxWindowDisabler *)NULL;
    }
    else
    {
        if ( m_parentTop )
            m_parentTop->Enable();
    }
}

// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

static void SetTimeLabel(unsigned long val, wxStaticText *label)
{
    if ( label )
    {
        wxString s;
        unsigned long hours = val / 3600;
        unsigned long minutes = (val % 3600) / 60;
        unsigned long seconds = val % 60;
        s.Printf(wxT("%lu:%02lu:%02lu"), hours, minutes, seconds);

        if ( s != label->GetLabel() )
            label->SetLabel(s);
    }
}

void wxProgressDialog::EnableSkip(bool enable)
{
    if(m_hasSkipButton)
    {
#ifdef __SMARTPHONE__
        if(enable)
            SetRightMenu(wxID_SKIP, _("Skip"));
        else
            SetRightMenu();
#else
        if(m_btnSkip)
            m_btnSkip->Enable(enable);
#endif
    }
}

void wxProgressDialog::EnableAbort(bool enable)
{
    if(m_hasAbortButton)
    {
#ifdef __SMARTPHONE__
        if(enable)
            SetLeftMenu(wxID_CANCEL); // stock buttons makes Cancel label
        else
            SetLeftMenu();
#else
        if(m_btnAbort)
            m_btnAbort->Enable(enable);
#endif
    }
}

void wxProgressDialog::EnableClose()
{
    if(m_hasAbortButton)
    {
#ifdef __SMARTPHONE__
        SetLeftMenu(wxID_CANCEL, _("Close"));
#else
        if(m_btnAbort)
        {
            m_btnAbort->Enable();
            m_btnAbort->SetLabel(_("Close"));
        }
#endif
    }
}

#endif // wxUSE_PROGRESSDLG