C++ wxGlobalDisplay函数代码示例

void wxTopLevelWindowX11::Restore()
{
    // This is the way to deiconify the window, according to the X FAQ
    if (m_iconized && X11GetMainWindow())
    {
        XMapWindow(wxGlobalDisplay(), (Window) X11GetMainWindow());
        m_iconized = false;
    }
}

void wxGetMousePosition( int* x, int* y )
{
#if wxUSE_NANOX
    // TODO
    *x = 0;
    *y = 0;
#else
    XMotionEvent xev;
    Window root, child;
    XQueryPointer(wxGlobalDisplay(),
                  DefaultRootWindow(wxGlobalDisplay()),
                  &root, &child,
                  &(xev.x_root), &(xev.y_root),
                  &(xev.x),      &(xev.y),
                  &(xev.state));
    *x = xev.x_root;
    *y = xev.y_root;
#endif
};

void wxWindowX11::DoClientToScreen(int *x, int *y) const
{
    Display *display = wxGlobalDisplay();
    Window rootWindow = RootWindowOfScreen(DefaultScreenOfDisplay(display));
    Window thisWindow = (Window) m_clientWindow;

    Window childWindow;
    int xx = *x;
    int yy = *y;
    XTranslateCoordinates(display, thisWindow, rootWindow, xx, yy, x, y, &childWindow);
}

void wxTopLevelWindowX11::SetTitle(const wxString& title)
{
    m_title = title;

    if (X11GetMainWindow())
    {
#if wxUSE_UNICODE
        //  I wonder of e.g. Metacity takes UTF-8 here
        XStoreName(wxGlobalDisplay(), (Window) X11GetMainWindow(),
            (const char*) title.ToAscii() );
        XSetIconName(wxGlobalDisplay(), (Window) X11GetMainWindow(),
            (const char*) title.ToAscii() );
#else
        XStoreName(wxGlobalDisplay(), (Window) X11GetMainWindow(),
            (const char*) title);
        XSetIconName(wxGlobalDisplay(), (Window) X11GetMainWindow(),
            (const char*) title);
#endif
    }
}

wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
{
    // get X protocol version
    Display *display = wxGlobalDisplay();
    if (display)
    {
        if ( verMaj )
            *verMaj = ProtocolVersion (display);
        if ( verMin )
            *verMin = ProtocolRevision (display);
    }

    return wxPORT_X11;
}

void wxColourRefData::AllocColour( WXColormap cmap )
{
    if (m_hasPixel && (m_colormap == cmap))
        return;

    FreeColour();

#if !wxUSE_NANOX
    if ((wxTheApp->m_visualInfo->m_visualType == GrayScale) ||
        (wxTheApp->m_visualInfo->m_visualType == PseudoColor))
    {
        m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
        int idx = m_color.pixel;
        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
    }
    else
#endif
    {
        m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color );
    }

    m_colormap = cmap;
}

// Wait for an appropriate window to be created.
// If exactMatch is FALSE, a substring match is OK.
// If windowName is empty, then wait for the next overrideRedirect window.
bool wxReparenter::WaitAndReparent(wxWindow* newParent, wxAdoptedWindow* toReparent,
                                   const wxString& windowName,
                                   bool exactMatch)
{
    sm_newParent = newParent;
    sm_toReparent = toReparent;
    sm_exactMatch = exactMatch;
    sm_name = windowName;
    
    Display* display = wxGlobalDisplay();
    XSelectInput(display,
        RootWindowOfScreen(DefaultScreenOfDisplay(display)),
        SubstructureNotifyMask);

    if (!WM_STATE)
        WM_STATE = XInternAtom(display, "WM_STATE", False);

#ifdef __WXDEBUG__
    if (!windowName.IsEmpty())
        wxLogDebug(_T("Waiting for window %s"), windowName.c_str());
#endif
    
    sm_done = FALSE;

    wxEventLoop eventLoop;
    while (!sm_done)
    {
        if (eventLoop.Pending())
        {
            XEvent xevent;
            XNextEvent(display, & xevent);
            if (!wxTheApp->ProcessXEvent((WXEvent*) & xevent))
            {
                // Do the local event processing
                ProcessXEvent((WXEvent*) & xevent);
            }
        }
        else
        {
#if wxUSE_TIMER
            wxTimer::NotifyTimers();
            wxTheApp->ProcessIdle();
#endif
        }
    }
    return TRUE;
}

void wxWindowX11::DoCaptureMouse()
{
    if ((g_captureWindow != NULL) && (g_captureWindow != this))
    {
        wxASSERT_MSG(FALSE, wxT("Trying to capture before mouse released."));

        // Core dump now
        int *tmp = NULL;
        (*tmp) = 1;
        return;
    }

    if (m_winCaptured)
        return;

    Window xwindow = (Window) m_clientWindow;

    wxCHECK_RET( xwindow, wxT("invalid window") );

    g_captureWindow = (wxWindow*) this;

    if (xwindow)
    {
        int res = XGrabPointer(wxGlobalDisplay(), xwindow,
            FALSE,
            ButtonPressMask | ButtonReleaseMask | ButtonMotionMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask,
            GrabModeAsync,
            GrabModeAsync,
            None,
            None, /* cursor */ // TODO: This may need to be set to the cursor of this window
            CurrentTime );

        if (res != GrabSuccess)
        {
            wxString msg;
            msg.Printf(wxT("Failed to grab pointer for window %s"), this->GetClassInfo()->GetClassName());
            wxLogDebug(msg);
            if (res == GrabNotViewable)
                wxLogDebug( wxT("This is not a viewable window - perhaps not shown yet?") );

            g_captureWindow = NULL;
            return;
        }

        m_winCaptured = TRUE;
    }
}

bool wxClipboard::AddData( wxDataObject *data )
{
    wxCHECK_MSG( data, false, "data is invalid" );
    wxCHECK_MSG( m_open, false, "clipboard not open" );

    m_data.Append( data );

    Display* xdisplay = wxGlobalDisplay();
    Widget xwidget = (Widget)wxTheApp->GetTopLevelRealizedWidget();
    Window xwindow = XtWindow( xwidget );
    wxXmString label( wxTheApp->GetAppDisplayName() );
    Time timestamp = XtLastTimestampProcessed( xdisplay );
    long itemId;

    int retval;

    while( ( retval = XmClipboardStartCopy( xdisplay, xwindow, label(),
                                            timestamp, xwidget,
                                            wxClipboardCallback,
                                            &itemId ) )
            == XmClipboardLocked );
    if( retval != XmClipboardSuccess )
        return false;

    size_t count = data->GetFormatCount( wxDataObject::Get );
    wxDataFormatScopedArray dfarr(count);
    data->GetAllFormats( dfarr.get(), wxDataObject::Get );

    for( size_t i = 0; i < count; ++i )
    {
        size_t size = data->GetDataSize( dfarr[i] );
        long data_id;
        wxString id = dfarr[i].GetId();

        while( ( retval = XmClipboardCopy( xdisplay, xwindow, itemId,
                                           id.char_str(),
                                           NULL, size, i, &data_id ) )
                == XmClipboardLocked );

        m_idToObject.Append( new wxDataIdToDataObject( data, data_id, size ) );
    }

    while( XmClipboardEndCopy( xdisplay, xwindow, itemId )
            == XmClipboardLocked );

    return true;
}

// Get size *available for subwindows* i.e. excluding menu bar etc.
void wxWindowX11::DoGetClientSize(int *x, int *y) const
{
    Window window = (Window) m_mainWindow;

    if (window)
    {
        XWindowAttributes attr;
        Status status = XGetWindowAttributes( wxGlobalDisplay(), window, &attr );
        wxASSERT(status);

        if (status)
        {
            *x = attr.width ;
            *y = attr.height ;
        }
    }
}

bool wxColour::FromString(const wxString& name)
{
    Display *dpy = wxGlobalDisplay();
    WXColormap colormap = wxTheApp->GetMainColormap( dpy );
    XColor xcol;
    if ( XParseColor( dpy, (Colormap)colormap, name.mbc_str(), &xcol ) )
    {
        UnRef();

        m_refData = new wxColourRefData;
        M_COLDATA->m_colormap = colormap;
        M_COLDATA->m_color = xcol;
        return true;
    }

    return wxColourBase::FromString(name);
}

// Get total size
void wxWindowX11::DoGetSize(int *x, int *y) const
{
    Window xwindow = (Window) m_mainWindow;

    wxCHECK_RET( xwindow, wxT("invalid window") );

    //XSync(wxGlobalDisplay(), False);

    XWindowAttributes attr;
    Status status = XGetWindowAttributes( wxGlobalDisplay(), xwindow, &attr );
    wxASSERT(status);

    if (status)
    {
        *x = attr.width /* + 2*m_borderSize */ ;
        *y = attr.height /* + 2*m_borderSize */ ;
    }
}

void wxWindowX11::DoReleaseMouse()
{
    g_captureWindow = NULL;

    if ( !m_winCaptured )
        return;

    Window xwindow = (Window) m_clientWindow;

    if (xwindow)
    {
        XUngrabPointer( wxGlobalDisplay(), CurrentTime );
    }

    // wxLogDebug( "Ungrabbed pointer in %s", GetName().c_str() );

    m_winCaptured = FALSE;
}

PangoContext* wxApp::GetPangoContext()
{
    static PangoContext *s_pangoContext = NULL;
    if ( !s_pangoContext )
    {
        Display *dpy = wxGlobalDisplay();
        int xscreen = DefaultScreen(dpy);

        s_pangoContext = pango_xft_get_context(dpy, xscreen);

        if (!PANGO_IS_CONTEXT(s_pangoContext))
        {
            wxLogError( wxT("No pango context.") );
        }
    }

    return s_pangoContext;
}

/* static */
wxColour wxColour::CreateByName(const wxString& name)
{
    wxColour col;

    Display *dpy = wxGlobalDisplay();
    WXColormap colormap = wxTheApp->GetMainColormap( dpy );
    XColor xcol;
    if ( XParseColor( dpy, (Colormap)colormap, name.mb_str(), &xcol ) )
    {
        col.m_red = xcol.red & 0xff;
        col.m_green = xcol.green & 0xff;
        col.m_blue = xcol.blue & 0xff;
        col.m_isInit = true;
        col.m_pixel = -1;
    }

    return col;
}