Method XWindowsScreen

src/lib/platform/XWindowsScreen.cpp:85–154

XWindowsScreen *XWindowsScreen::s_screen = nullptr;

XWindowsScreen::XWindowsScreen(const char *displayName, bool isPrimary, IEventQueue *events)
    : PlatformScreen(events),
      m_isPrimary(isPrimary),
      m_isOnScreen(m_isPrimary),
      m_events(events)
{
  assert(s_screen == nullptr);
  s_screen = this;

  if (XInitThreads() == 0) {
    throw std::runtime_error("XInitThreads() returned zero");
  }

  // set the X I/O error handler so we catch the display disconnecting
  XSetIOErrorHandler(&XWindowsScreen::ioErrorHandler);

  try {
    m_display = openDisplay(displayName);
    m_root = DefaultRootWindow(m_display);
    saveShape();
    m_window = openWindow();
    m_screensaver = new XWindowsScreenSaver(m_display, m_window, getEventTarget(), events);
    m_keyState = new XWindowsKeyState(m_display, m_xkb, events, m_keyMap);
    LOG_DEBUG("screen shape: %d,%d %dx%d %s", m_x, m_y, m_w, m_h, m_xinerama ? "(xinerama)" : "");
    LOG_DEBUG("window is 0x%08x", m_window);
  } catch (...) {
    if (m_display != nullptr) {
      XCloseDisplay(m_display);
    }
    throw;
  }

  // primary/secondary screen only initialization
  if (m_isPrimary) {
#ifdef HAVE_XI2
    m_xi2detected = detectXI2();
    if (m_xi2detected) {
      selectXIRawMotion();
    } else
#endif
    {
      // start watching for events on other windows
      selectEvents(m_root);
    }

    // prepare to use input methods
    openIM();
  } else {
    // become impervious to server grabs
    XTestGrabControl(m_display, True);
  }

  // disable sleep if the flag is set
  if (Settings::value(Settings::Core::PreventSleep).toBool()) {
    m_powerManager.disableSleep();
  }

  // initialize the clipboards