#include <qxcbconnection.h>

Inheritance diagram for QXcbConnection:

Classes
struct	CallInfo

Public Functions
xcb_atom_t	atom (QXcbAtom::Atom atom)

QXcbConnection *	connection () const

const char *	displayName () const

void	handleXcbError (xcb_generic_error_t *error)

QXcbKeyboard *	keyboard () const

int	primaryScreen () const

	QXcbConnection (const char *displayName=0)

QList< QXcbScreen * >	screens () const

void	sync ()

xcb_connection_t *	xcb_connection () const

	~QXcbConnection ()

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Private Slots
void	processXcbEvents ()

Private Functions
void	initializeAllAtoms ()

void	log (const char *file, int line, int sequence)

void	sendConnectionEvent (QXcbAtom::Atom atom, uint id=0)

Properties
xcb_atom_t	m_allAtoms [QXcbAtom::NAtoms]

QVector< CallInfo >	m_callLog

xcb_connection_t *	m_connection

QByteArray	m_displayName

QXcbKeyboard *	m_keyboard

int	m_primaryScreen

QList< QXcbScreen * >	m_screens

const xcb_setup_t *	m_setup

Friends
template<typename cookie_t >
cookie_t	q_xcb_call_template (const cookie_t &cookie, QXcbConnection connection, const char file, int line)

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 220 of file qxcbconnection.h.

Constructors and Destructors

◆ QXcbConnection()

QXcbConnection::QXcbConnection ( const char * displayName = 0 )

Definition at line 78 of file qxcbconnection.cpp.

     : 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::~QXcbConnection ( )

Definition at line 133 of file qxcbconnection.cpp.

 {
     qDeleteAll(m_screens);
 
 #ifdef XCB_USE_XLIB
     XCloseDisplay((Display *)m_xlib_display);
 #else
     xcb_disconnect(xcb_connection());
 #endif
 
     delete m_keyboard;
 }

Functions

◆ atom()

xcb_atom_t QXcbConnection::atom ( QXcbAtom::Atom atom )

Definition at line 633 of file qxcbconnection.cpp.

Referenced by QXcbObject::atom().

 {
     return m_allAtoms[atom];
 }

◆ connection()

QXcbConnection* QXcbConnection::connection ( ) const

inline

Definition at line 227 of file qxcbconnection.h.

227 { return const_cast<QXcbConnection *>(this); }

QXcbConnection

Definition: qxcbconnection.h:220

◆ displayName()

const char* QXcbConnection::displayName ( ) const

inline

Definition at line 234 of file qxcbconnection.h.

234 { return m_displayName.constData(); }

QXcbConnection::m_displayName

QByteArray m_displayName

Definition: qxcbconnection.h:276

QByteArray::constData

const char * constData() const

Returns a pointer to the data stored in the byte array.

Definition: qbytearray.h:433

◆ handleXcbError()

void QXcbConnection::handleXcbError ( xcb_generic_error_t * error )

Definition at line 384 of file qxcbconnection.cpp.

Referenced by processXcbEvents(), and QXcbScreen::QXcbScreen().

 {
     uint clamped_error_code = qMin<uint>(error->error_code, (sizeof(xcb_errors) / sizeof(xcb_errors[0])) - 1);
     uint clamped_major_code = qMin<uint>(error->major_code, (sizeof(xcb_protocol_request_codes) / sizeof(xcb_protocol_request_codes[0])) - 1);
 
     printf("XCB error: %d (%s), sequence: %d, resource id: %d, major code: %d (%s), minor code: %d\n",
            int(error->error_code), xcb_errors[clamped_error_code],
            int(error->sequence), int(error->resource_id),
            int(error->major_code), xcb_protocol_request_codes[clamped_major_code],
            int(error->minor_code));
 #ifdef Q_XCB_DEBUG
     int i = 0;
     for (; i < m_callLog.size(); ++i) {
         if (m_callLog.at(i).sequence == error->sequence) {
             printf("Caused by: %s:%d\n", qPrintable(m_callLog.at(i).file), m_callLog.at(i).line);
             break;
         } else if (m_callLog.at(i).sequence > error->sequence) {
             printf("Caused some time before: %s:%d\n", qPrintable(m_callLog.at(i).file), m_callLog.at(i).line);
             if (i > 0)
                 printf("and after: %s:%d\n", qPrintable(m_callLog.at(i-1).file), m_callLog.at(i-1).line);
             break;
         }
     }
     if (i == m_callLog.size() && !m_callLog.isEmpty())
         printf("Caused some time after: %s:%d\n", qPrintable(m_callLog.first().file), m_callLog.first().line);
 #endif
 }

◆ initializeAllAtoms()

void QXcbConnection::initializeAllAtoms ( )

private

Definition at line 638 of file qxcbconnection.cpp.

Referenced by QXcbConnection().

                                         {
     const char *names[QXcbAtom::NAtoms];
     const char *ptr = xcb_atomnames;
 
     int i = 0;
     while (*ptr) {
         names[i++] = ptr;
         while (*ptr)
             ++ptr;
         ++ptr;
     }
 
     Q_ASSERT(i == QXcbAtom::NPredefinedAtoms);
 
     QByteArray settings_atom_name("_QT_SETTINGS_TIMESTAMP_");
     settings_atom_name += m_displayName;
     names[i++] = settings_atom_name;
 
     xcb_intern_atom_cookie_t cookies[QXcbAtom::NAtoms];
 
     Q_ASSERT(i == QXcbAtom::NAtoms);
     for (i = 0; i < QXcbAtom::NAtoms; ++i)
         cookies[i] = xcb_intern_atom(xcb_connection(), false, strlen(names[i]), names[i]);
 
     for (i = 0; i < QXcbAtom::NAtoms; ++i)
         m_allAtoms[i] = xcb_intern_atom_reply(xcb_connection(), cookies[i], 0)->atom;
 }

◆ keyboard()

QXcbKeyboard* QXcbConnection::keyboard ( ) const

inline

Definition at line 238 of file qxcbconnection.h.

238 { return m_keyboard; }

QXcbConnection::m_keyboard

QXcbKeyboard * m_keyboard

Definition: qxcbconnection.h:278

◆ log()

void QXcbConnection::log	(	const char *	file,
		int	line,
		int	sequence
	)

private

Definition at line 374 of file qxcbconnection.cpp.

Referenced by q_xcb_call_template().

 {
     CallInfo info;
     info.sequence = sequence;
     info.file = file;
     info.line = line;
     m_callLog << info;
 }

◆ primaryScreen()

int QXcbConnection::primaryScreen ( ) const

inline

Definition at line 230 of file qxcbconnection.h.

Referenced by QXcbConnection().

230 { return m_primaryScreen; }

QXcbConnection::m_primaryScreen

int m_primaryScreen

Definition: qxcbconnection.h:272

◆ processXcbEvents

void QXcbConnection::processXcbEvents ( )

privateslot

Definition at line 412 of file qxcbconnection.cpp.

Referenced by QXcbConnection().

 {
     while (xcb_generic_event_t *event = xcb_poll_for_event(xcb_connection())) {
         bool handled = true;
 
         uint response_type = event->response_type & ~0x80;
 
         if (!response_type) {
             handleXcbError((xcb_generic_error_t *)event);
             continue;
         }
 
 #ifdef Q_XCB_DEBUG
         {
             int i = 0;
             for (; i < m_callLog.size(); ++i)
                 if (m_callLog.at(i).sequence >= event->sequence)
                     break;
             m_callLog.remove(0, i);
         }
 #endif
 
         switch (response_type) {
         case XCB_EXPOSE:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_expose_event_t, window, handleExposeEvent);
         case XCB_BUTTON_PRESS:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_button_press_event_t, event, handleButtonPressEvent);
         case XCB_BUTTON_RELEASE:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_button_release_event_t, event, handleButtonReleaseEvent);
         case XCB_MOTION_NOTIFY:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_motion_notify_event_t, event, handleMotionNotifyEvent);
         case XCB_CONFIGURE_NOTIFY:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_configure_notify_event_t, event, handleConfigureNotifyEvent);
         case XCB_CLIENT_MESSAGE:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_client_message_event_t, window, handleClientMessageEvent);
         case XCB_ENTER_NOTIFY:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_enter_notify_event_t, event, handleEnterNotifyEvent);
         case XCB_LEAVE_NOTIFY:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_leave_notify_event_t, event, handleLeaveNotifyEvent);
         case XCB_FOCUS_IN:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_focus_in_event_t, event, handleFocusInEvent);
         case XCB_FOCUS_OUT:
             HANDLE_PLATFORM_WINDOW_EVENT(xcb_focus_out_event_t, event, handleFocusOutEvent);
         case XCB_KEY_PRESS:
             HANDLE_KEYBOARD_EVENT(xcb_key_press_event_t, handleKeyPressEvent);
         case XCB_KEY_RELEASE:
             HANDLE_KEYBOARD_EVENT(xcb_key_release_event_t, handleKeyReleaseEvent);
         case XCB_MAPPING_NOTIFY:
             m_keyboard->handleMappingNotifyEvent((xcb_mapping_notify_event_t *)event);
             break;
         default:
             handled = false;
             break;
         }
         if (handled)
             printXcbEvent("Handled XCB event", event);
         else
             printXcbEvent("Unhandled XCB event", event);
     }
 
     xcb_flush(xcb_connection());
 }

◆ screens()

QList<QXcbScreen *> QXcbConnection::screens ( ) const

inline

Definition at line 229 of file qxcbconnection.h.

Referenced by QXcbIntegration::QXcbIntegration().

229 { return m_screens; }

QXcbConnection::m_screens

QList< QXcbScreen * > m_screens

Definition: qxcbconnection.h:271

◆ sendConnectionEvent()

void QXcbConnection::sendConnectionEvent	(	QXcbAtom::Atom	atom,
		uint	id = `0`
	)

private

◆ sync()

void QXcbConnection::sync ( )

Definition at line 666 of file qxcbconnection.cpp.

Referenced by QXcbWindowSurface::flush(), QXcbShmImage::preparePaint(), QXcbConnection(), QXcbWindow::requestActivateWindow(), QXcbWindow::setVisible(), and QXcbWindow::updateSyncRequestCounter().

 {
     // from xcb_aux_sync
     xcb_get_input_focus_cookie_t cookie = Q_XCB_CALL(xcb_get_input_focus(xcb_connection()));
     free(xcb_get_input_focus_reply(xcb_connection(), cookie, 0));
 }

◆ xcb_connection()

xcb_connection_t* QXcbConnection::xcb_connection ( ) const

inline

Definition at line 236 of file qxcbconnection.h.

Referenced by initializeAllAtoms(), processXcbEvents(), QXcbConnection(), sync(), QXcbObject::xcb_connection(), and ~QXcbConnection().

236 { return m_connection; }

QXcbConnection::m_connection

xcb_connection_t * m_connection

Definition: qxcbconnection.h:268

Friends and Related Functions

◆ q_xcb_call_template

template<typename cookie_t >

cookie_t q_xcb_call_template	(	const cookie_t &	cookie,
		QXcbConnection *	connection,
		const char *	file,
		int	line
	)

friend

Definition at line 312 of file qxcbconnection.h.

 {
     connection->log(file, line, cookie.sequence);
     return cookie;
 }

Properties

◆ m_allAtoms

xcb_atom_t QXcbConnection::m_allAtoms[QXcbAtom::NAtoms]

private

Definition at line 274 of file qxcbconnection.h.

Referenced by atom(), and initializeAllAtoms().

◆ m_callLog

QVector<CallInfo> QXcbConnection::m_callLog

private

Definition at line 301 of file qxcbconnection.h.

Referenced by handleXcbError(), log(), and processXcbEvents().

◆ m_connection

xcb_connection_t* QXcbConnection::m_connection

private

Definition at line 268 of file qxcbconnection.h.

Referenced by QXcbConnection(), and sync().

◆ m_displayName

QByteArray QXcbConnection::m_displayName

private

Definition at line 276 of file qxcbconnection.h.

Referenced by initializeAllAtoms(), and QXcbConnection().

◆ m_keyboard

QXcbKeyboard* QXcbConnection::m_keyboard

private

Definition at line 278 of file qxcbconnection.h.

Referenced by processXcbEvents(), QXcbConnection(), and ~QXcbConnection().

◆ m_primaryScreen

int QXcbConnection::m_primaryScreen

private

Definition at line 272 of file qxcbconnection.h.

◆ m_screens

QList<QXcbScreen *> QXcbConnection::m_screens

private

Definition at line 271 of file qxcbconnection.h.

Referenced by QXcbConnection(), sync(), and ~QXcbConnection().

◆ m_setup

const xcb_setup_t* QXcbConnection::m_setup

private

Definition at line 269 of file qxcbconnection.h.

Referenced by QXcbConnection().

The documentation for this class was generated from the following files:

/src/plugins/platforms/xcb/qxcbconnection.h
/src/plugins/platforms/xcb/qxcbconnection.cpp

Classes

Public Functions

Private Slots

Private Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QXcbConnection()

◆ ~QXcbConnection()

Functions

◆ atom()

◆ connection()

◆ displayName()

◆ handleXcbError()

◆ initializeAllAtoms()

◆ keyboard()

◆ log()

◆ primaryScreen()

◆ processXcbEvents

◆ screens()

◆ sendConnectionEvent()

◆ sync()

◆ xcb_connection()

Friends and Related Functions

◆ q_xcb_call_template

Properties

◆ m_allAtoms

◆ m_callLog

◆ m_connection

◆ m_displayName

◆ m_keyboard

◆ m_primaryScreen

◆ m_screens

◆ m_setup