QXcbConnection::QXcbConnection(const char *displayName)
: m_displayName(displayName ? QByteArray(displayName) : qgetenv("DISPLAY"))
#ifdef XCB_USE_DRI2
, m_dri2_major(0)
, m_dri2_minor(0)
, m_dri2_support_probed(false)
, m_has_support_for_dri2(false)
#endif
{
int primaryScreen = 0;
#ifdef XCB_USE_XLIB
Display *dpy = XOpenDisplay(m_displayName.constData());
primaryScreen = DefaultScreen(dpy);
m_connection = XGetXCBConnection(dpy);
XSetEventQueueOwner(dpy, XCBOwnsEventQueue);
m_xlib_display = dpy;
#ifdef XCB_USE_EGL
EGLDisplay eglDisplay = eglGetDisplay(dpy);
m_egl_display = eglDisplay;
EGLint major, minor;
eglBindAPI(EGL_OPENGL_ES_API);
m_has_egl = eglInitialize(eglDisplay,&major,&minor);
#endif //XCB_USE_EGL
#else
m_connection = xcb_connect(m_displayName.constData(), &primaryScreen);
#endif //XCB_USE_XLIB
m_setup = xcb_get_setup(xcb_connection());
initializeAllAtoms();
xcb_screen_iterator_t it = xcb_setup_roots_iterator(m_setup);
int screenNumber = 0;
while (it.rem) {
m_screens << new QXcbScreen(this, it.data, screenNumber++);
xcb_screen_next(&it);
}
m_keyboard = new QXcbKeyboard(this);
#ifdef XCB_USE_DRI2
initializeDri2();
#endif
QSocketNotifier *notifier = new QSocketNotifier(xcb_get_file_descriptor(xcb_connection()), QSocketNotifier::Read, this);
connect(notifier, SIGNAL(activated(int)), this, SLOT(processXcbEvents()));
QAbstractEventDispatcher *dispatcher = QAbstractEventDispatcher::instance(qApp->thread());
connect(dispatcher, SIGNAL(aboutToBlock()), this, SLOT(processXcbEvents()));
sync();
}
QXcbConnection::QXcbConnection(bool canGrabServer, const char *displayName)
: m_connection(0)
, m_canGrabServer(canGrabServer)
, m_displayName(displayName ? QByteArray(displayName) : qgetenv("DISPLAY"))
#ifdef XCB_USE_XLIB
, m_xlib_display(0)
#endif
{
m_connection = QX11Info::connection();
m_xlib_display = QX11Info::display();
if (!m_connection || xcb_connection_has_error(m_connection)) {
qFatal("QXcbConnection: Could not connect to display %s", m_displayName.constData());
}
initializeAllAtoms();
#if defined(XCB_USE_XINPUT2)
initializeXInput2();
#endif
}
