#include <qxcbdrag.h>

Inheritance diagram for QXcbDrag:

Collaboration diagram for QXcbDrag:

Public Member Functions
	QXcbDrag (QXcbConnection *c)

	~QXcbDrag ()

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

void	startDrag () override

void	cancel () override

void	move (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override

void	drop (const QPoint &globalPos, Qt::MouseButtons b, Qt::KeyboardModifiers mods) override

void	endDrag () override

Qt::DropAction	defaultAction (Qt::DropActions possibleActions, Qt::KeyboardModifiers modifiers) const override

void	handlePropertyNotifyEvent (const xcb_property_notify_event_t *event) override

void	handleEnter (QPlatformWindow window, const xcb_client_message_event_t event, xcb_window_t proxy=0)

void	handlePosition (QPlatformWindow w, const xcb_client_message_event_t event)

void	handleLeave (QPlatformWindow w, const xcb_client_message_event_t event)

void	handleDrop (QPlatformWindow , const xcb_client_message_event_t event, Qt::MouseButtons b={ }, Qt::KeyboardModifiers mods={ })

void	handleStatus (const xcb_client_message_event_t *event)

void	handleSelectionRequest (const xcb_selection_request_event_t *event)

void	handleFinished (const xcb_client_message_event_t *event)

bool	dndEnable (QXcbWindow *win, bool on)

bool	ownsDragObject () const override
	Returns bool indicating whether QPlatformDrag takes ownership and therefore responsibility of deleting the QDrag object passed in from QPlatformDrag::drag. This can be useful on platforms where QDrag object has to be kept around.

void	updatePixmap ()

xcb_timestamp_t	targetTime ()

Public Member Functions inherited from QXcbObject
	QXcbObject (QXcbConnection *connection=nullptr)

void	setConnection (QXcbConnection *connection)

QXcbConnection *	connection () const

xcb_atom_t	atom (QXcbAtom::Atom atom) const

xcb_connection_t *	xcb_connection () const

Public Member Functions inherited from QBasicDrag
	~QBasicDrag ()

virtual Qt::DropAction	drag (QDrag *drag) override

void	cancelDrag () override
	Cancels the currently active drag (only for drags of the current application initiated by QPlatformDrag::drag()).

Public Member Functions inherited from QPlatformDrag
	QPlatformDrag ()

virtual	~QPlatformDrag ()

QDrag *	currentDrag () const

void	updateAction (Qt::DropAction action)
	Called to notify QDrag about changes of the current action.

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.

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

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

QString	objectName () const

Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.

void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

QBindable< QString >	bindableObjectName ()

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

bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.

bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.

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

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

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

bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.

int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

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

void	killTimer (Qt::TimerId id)

template<typename T >
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.

template<typename T >
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) 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.

template<typename T >
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

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

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

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

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

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

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

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

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

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

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

bool	setProperty (const char *name, QVariant &&value)

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

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

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

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`.

Public Member Functions inherited from QXcbWindowEventListener
virtual	~QXcbWindowEventListener ()

virtual bool	handleNativeEvent (xcb_generic_event_t *)

virtual void	handleExposeEvent (const xcb_expose_event_t *)

virtual void	handleClientMessageEvent (const xcb_client_message_event_t *)

virtual void	handleConfigureNotifyEvent (const xcb_configure_notify_event_t *)

virtual void	handleMapNotifyEvent (const xcb_map_notify_event_t *)

virtual void	handleUnmapNotifyEvent (const xcb_unmap_notify_event_t *)

virtual void	handleDestroyNotifyEvent (const xcb_destroy_notify_event_t *)

virtual void	handleButtonPressEvent (const xcb_button_press_event_t *)

virtual void	handleButtonReleaseEvent (const xcb_button_release_event_t *)

virtual void	handleMotionNotifyEvent (const xcb_motion_notify_event_t *)

virtual void	handleEnterNotifyEvent (const xcb_enter_notify_event_t *)

virtual void	handleLeaveNotifyEvent (const xcb_leave_notify_event_t *)

virtual void	handleFocusInEvent (const xcb_focus_in_event_t *)

virtual void	handleFocusOutEvent (const xcb_focus_out_event_t *)

virtual void	handleXIMouseEvent (xcb_ge_event_t *, Qt::MouseEventSource=Qt::MouseEventNotSynthesized)

virtual void	handleXIEnterLeave (xcb_ge_event_t *)

virtual QXcbWindow *	toWindow ()

Protected Member Functions
void	timerEvent (QTimerEvent *e) override
	This event handler can be reimplemented in a subclass to receive timer events for the object.

bool	findXdndAwareTarget (const QPoint &globalPos, xcb_window_t *target_out)

Protected Member Functions inherited from QBasicDrag
	QBasicDrag ()

void	moveShapedPixmapWindow (const QPoint &deviceIndependentPosition)
	Move the drag label to globalPos, which is interpreted in device independent coordinates.

QShapedPixmapWindow *	shapedPixmapWindow () const

void	recreateShapedPixmapWindow (QScreen *screen, const QPoint &pos)

void	updateCursor (Qt::DropAction action)

bool	canDrop () const

void	setCanDrop (bool c)

bool	useCompositing () const

void	setUseCompositing (bool on)

void	setScreen (QScreen *screen)

Qt::DropAction	executedDropAction () const

void	setExecutedDropAction (Qt::DropAction da)

QDrag *	drag () const

Protected Member Functions inherited from QObject
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 \nullptr.

int	senderSignalIndex () const

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

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.

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

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

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

Friends
class	QXcbDropData

class	QTypeInfo< Transaction >

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.

void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.

Static Public Member Functions inherited from QPlatformDrag
static QPixmap	defaultPixmap ()

Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe

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

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe

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

static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.

template<typename Func1 , typename Func2 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)

template<typename Func1 >
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)

Protected Attributes inherited from QBasicDrag
QWindow *	m_sourceWindow = nullptr

QPointer< QWindow >	m_windowUnderCursor = nullptr

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

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

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 34 of file qxcbdrag.h.

Constructor & Destructor Documentation

◆ QXcbDrag()

QXcbDrag::QXcbDrag ( QXcbConnection * c )

Definition at line 89 of file qxcbdrag.cpp.

References QXcbDropData::QXcbDropData(), and QXcbObject::QXcbObject().

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◆ ~QXcbDrag()

QXcbDrag::~QXcbDrag ( )

Definition at line 96 of file qxcbdrag.cpp.

Member Function Documentation

◆ cancel()

void QXcbDrag::cancel ( )

overridevirtual

Reimplemented from QBasicDrag.

Definition at line 1121 of file qxcbdrag.cpp.

Referenced by move().

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◆ defaultAction()

Qt::DropAction QXcbDrag::defaultAction	(	Qt::DropActions	possibleActions,
		Qt::KeyboardModifiers	modifiers ) const

overridevirtual

Reimplemented from QPlatformDrag.

Definition at line 181 of file qxcbdrag.cpp.

◆ dndEnable()

bool QXcbDrag::dndEnable	(	QXcbWindow *	win,
		bool	on )

Definition at line 1230 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndAware, QXcbAtom::AtomXdndProxy, QXcbObject::connection(), QXcbObject::xcb_connection(), and xdnd_version.

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◆ drop()

void QXcbDrag::drop	(	const QPoint &	globalPos,
		Qt::MouseButtons	b,
		Qt::KeyboardModifiers	mods )

overridevirtual

Implements QBasicDrag.

Definition at line 472 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndDrop, QXcbObject::connection(), and QXcbObject::xcb_connection().

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◆ endDrag()

void QXcbDrag::endDrag ( )

overridevirtual

Reimplemented from QBasicDrag.

Definition at line 171 of file qxcbdrag.cpp.

◆ eventFilter()

bool QXcbDrag::eventFilter	(	QObject *	watched,
		QEvent *	event )

overridevirtual

Filters events if this object has been installed as an event filter for the watched object.

In your reimplementation of this function, if you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Example:

class MainWindow : public QMainWindow
{
public:
    MainWindow();
 
protected:
    bool eventFilter(QObject *obj, QEvent *ev) override;
 
private:
    QTextEdit *textEdit;
};
 
MainWindow::MainWindow()
{
    textEdit = new QTextEdit;
    setCentralWidget(textEdit);
 
    textEdit->installEventFilter(this);
}
 
bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{
    if (obj == textEdit) {
        if (event->type() == QEvent::KeyPress) {
            QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
            qDebug() << "Ate key press" << keyEvent->key();
            return true;
        } else {
            return false;
        }
    } else {
        // pass the event on to the parent class
        return QMainWindow::eventFilter(obj, event);
    }
}

Notice in the example above that unhandled events are passed to the base class's eventFilter() function, since the base class might have reimplemented eventFilter() for its own internal purposes.

Some events, such as \l QEvent::ShortcutOverride must be explicitly accepted (by calling \l {QEvent::}{accept()} on them) in order to prevent propagation.

Warning: If you delete the receiver object in this function, be sure to return true. Otherwise, Qt will forward the event to the deleted object and the program might crash.

See also: installEventFilter()

Reimplemented from QBasicDrag.

Definition at line 127 of file qxcbdrag.cpp.

◆ findXdndAwareTarget()

bool QXcbDrag::findXdndAwareTarget	(	const QPoint &	globalPos,
		xcb_window_t *	target_out )

protected

Definition at line 281 of file qxcbdrag.cpp.

References QXcbAtom::AtomXdndAware, QPoint::x(), and QXcbObject::xcb_connection().

Referenced by move().

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◆ handleDrop()

void QXcbDrag::handleDrop	(	QPlatformWindow *	,
		const xcb_client_message_event_t *	event,
		Qt::MouseButtons	b = { },
		Qt::KeyboardModifiers	mods = { } )

Definition at line 958 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndFinished, QXcbObject::connection(), and QXcbObject::xcb_connection().

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◆ handleEnter()

void QXcbDrag::handleEnter	(	QPlatformWindow *	window,
		const xcb_client_message_event_t *	event,
		xcb_window_t	proxy = 0 )

Definition at line 682 of file qxcbdrag.cpp.

References QXcbAtom::AtomXdndTypelist, QXcbObject::connection(), QXcbObject::xcb_connection(), and xdnd_version.

Referenced by move().

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◆ handleFinished()

void QXcbDrag::handleFinished ( const xcb_client_message_event_t * event )

Definition at line 1042 of file qxcbdrag.cpp.

References QXcbObject::connection().

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◆ handleLeave()

void QXcbDrag::handleLeave	(	QPlatformWindow *	w,
		const xcb_client_message_event_t *	event )

Definition at line 898 of file qxcbdrag.cpp.

◆ handlePosition()

void QXcbDrag::handlePosition	(	QPlatformWindow *	w,
		const xcb_client_message_event_t *	event )

Definition at line 835 of file qxcbdrag.cpp.

References QXcbObject::atom(), and QXcbAtom::AtomXdndPosition.

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◆ handlePropertyNotifyEvent()

void QXcbDrag::handlePropertyNotifyEvent ( const xcb_property_notify_event_t * event )

overridevirtual

Reimplemented from QXcbWindowEventListener.

Definition at line 189 of file qxcbdrag.cpp.

References QXcbObject::atom(), and QXcbAtom::AtomXdndActionList.

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◆ handleSelectionRequest()

void QXcbDrag::handleSelectionRequest ( const xcb_selection_request_event_t * event )

Definition at line 1162 of file qxcbdrag.cpp.

References QXcbObject::connection(), and QXcbObject::xcb_connection().

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◆ handleStatus()

void QXcbDrag::handleStatus ( const xcb_client_message_event_t * event )

Definition at line 879 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndStatus, and QXcbObject::connection().

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◆ move()

void QXcbDrag::move	(	const QPoint &	globalPos,
		Qt::MouseButtons	b,
		Qt::KeyboardModifiers	mods )

overridevirtual

Implements QBasicDrag.

Definition at line 333 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndAware, QXcbAtom::AtomXdndEnter, QXcbAtom::AtomXdndPosition, cancel(), QXcbVirtualDesktop::compositingActive(), QXcbObject::connection(), findXdndAwareTarget(), handleEnter(), QPoint::x(), QXcbObject::xcb_connection(), xdnd_version, and QPoint::y().

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◆ ownsDragObject()

bool QXcbDrag::ownsDragObject ( ) const

overridevirtual

Returns bool indicating whether QPlatformDrag takes ownership and therefore responsibility of deleting the QDrag object passed in from QPlatformDrag::drag. This can be useful on platforms where QDrag object has to be kept around.

Since: 5.4

Reimplemented from QPlatformDrag.

Definition at line 1280 of file qxcbdrag.cpp.

◆ startDrag()

void QXcbDrag::startDrag ( )

overridevirtual

Reimplemented from QBasicDrag.

Definition at line 138 of file qxcbdrag.cpp.

References QXcbObject::atom(), QXcbAtom::AtomXdndSelection, QXcbObject::connection(), and QXcbObject::xcb_connection().

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◆ targetTime()

xcb_timestamp_t QXcbDrag::targetTime ( )

inline

Definition at line 66 of file qxcbdrag.h.

◆ timerEvent()

void QXcbDrag::timerEvent ( QTimerEvent * event )

overrideprotectedvirtual

This event handler can be reimplemented in a subclass to receive timer events for the object.

QChronoTimer provides higher-level interfaces to the timer functionality, and also more general information about timers. The timer event is passed in the event parameter.

See also: startTimer(), killTimer(), event()

Reimplemented from QObject.

Definition at line 1088 of file qxcbdrag.cpp.

◆ updatePixmap()

void QXcbDrag::updatePixmap ( )

Friends And Related Symbol Documentation

◆ QTypeInfo< Transaction >

friend class QTypeInfo< Transaction >

friend

Definition at line 136 of file qxcbdrag.h.

◆ QXcbDropData

friend class QXcbDropData

friend

Definition at line 74 of file qxcbdrag.h.

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

qtbase/src/plugins/platforms/xcb/qxcbdrag.h (be4ea227cec04d4844a735f045e6f10b5a988bb1)
qtbase/src/plugins/platforms/xcb/qxcbdrag.cpp (be4ea227cec04d4844a735f045e6f10b5a988bb1)

Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QXcbDrag()

◆ ~QXcbDrag()

Member Function Documentation

◆ cancel()

◆ defaultAction()

◆ dndEnable()

◆ drop()

◆ endDrag()

◆ eventFilter()

◆ findXdndAwareTarget()

◆ handleDrop()

◆ handleEnter()

◆ handleFinished()

◆ handleLeave()

◆ handlePosition()

◆ handlePropertyNotifyEvent()

◆ handleSelectionRequest()

◆ handleStatus()

◆ move()

◆ ownsDragObject()

◆ startDrag()

◆ targetTime()

◆ timerEvent()

◆ updatePixmap()

Friends And Related Symbol Documentation

◆ QTypeInfo< Transaction >

◆ QXcbDropData