KWayland - KWayland::Client::PointerPinchGesture Class Reference

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#include <pointergestures.h>

Inheritance diagram for KWayland::Client::PointerPinchGesture:

Signals
void	cancelled (quint32 serial, quint32 time)

void	ended (quint32 serial, quint32 time)

void	started (quint32 serial, quint32 time)

void	updated (const QSizeF &delta, qreal scale, qreal rotation, quint32 time)

Public Member Functions
void	destroy ()

quint32	fingerCount () const

bool	isValid () const

	operator zwp_pointer_gesture_pinch_v1 * ()

	operator zwp_pointer_gesture_pinch_v1 * () const

void	release ()

void	setup (zwp_pointer_gesture_pinch_v1 *pointerpinchgesture)

QPointer< Surface >	surface () const

Public Member Functions inherited from QObject
	QObject (QObject *parent)

bool	blockSignals (bool block)

const QObjectList &	children () const

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

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const

bool	disconnect (const QObject receiver, const char method) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QByteArray >	dynamicPropertyNames () const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QString &name, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QRegExp &regExp, QFlags< Qt::FindChildOption > options) const

QList< T >	findChildren (const QRegularExpression &re, QFlags< Qt::FindChildOption > options) const

bool	inherits (const char *className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const

QVariant	property (const char *name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

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

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType)

QThread *	thread () const

Additional Inherited Members
Properties inherited from QObject
	objectName

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

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

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

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

QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const

int	receivers (const char *signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Detailed Description

This class is a wrapper for the zwp_pointer_gesture_pinch_v1 protocol.

A PointerPinchGesture object notifies a client about a multi-finger pinch gesture detected on an indirect input device such as a touchpad. The gesture is usually initiated by multiple fingers moving towards each other or away from each other, or by two or more fingers rotating around a logical center of gravity. The precise conditions of when such a gesture is detected are implementation-dependent.

A gesture consists of three stages: begin, update (optional) and end. There cannot be multiple simultaneous pinch or swipe gestures on the same pointer/seat, how compositors prevent these situations is implementation-dependent.

A gesture may be cancelled by the compositor or the hardware. Clients should not consider performing permanent or irreversible actions until the end of a gesture has been received.

See also: PointerGestures; PointerSwipeGesture

Since: 5.29

Definition at line 304 of file pointergestures.h.

Member Function Documentation

void KWayland::Client::PointerPinchGesture::cancelled	(	quint32	serial,
		quint32	time
	)

signal

A gesture got cancelled by the Wayland compositor.

Parameters

serial	Unique serial for this cancel gesture event.
time	Timestamp in milliseconds granularity

See also: started; updated; ended

void KWayland::Client::PointerPinchGesture::destroy ( )

Destroys the data held by this PointerPinchGesture.

This method is supposed to be used when the connection to the Wayland server goes away. If the connection is not valid anymore, it's not possible to call release anymore as that calls into the Wayland connection and the call would fail. This method cleans up the data, so that the instance can be deleted or set up to a new zwp_pointer_gesture_pinch_v1 interface once there is a new connection available.

It is suggested to connect this method to ConnectionThread::connectionDied:

connect(connection, &ConnectionThread::connectionDied, pointerpinchgesture, &PointerPinchGesture::destroy);

See also: release

Definition at line 325 of file pointergestures.cpp.

void KWayland::Client::PointerPinchGesture::ended	(	quint32	serial,
		quint32	time
	)

signal

A gesture ended.

Parameters

serial	Unique serial for this end gesture event.
time	Timestamp in milliseconds granularity

See also: started; updated; cancelled

quint32 KWayland::Client::PointerPinchGesture::fingerCount ( ) const

The number of fingers taking part in this gesture.

If no gesture is in progress 0 is returned.

Definition at line 343 of file pointergestures.cpp.

bool KWayland::Client::PointerPinchGesture::isValid ( ) const

Returns: true if managing a zwp_pointer_gesture_pinch_v1.

Definition at line 338 of file pointergestures.cpp.

void KWayland::Client::PointerPinchGesture::release ( )

Releases the zwp_pointer_gesture_pinch_v1 interface.

After the interface has been released the PointerPinchGesture instance is no longer valid and can be setup with another zwp_pointer_gesture_pinch_v1 interface.

Definition at line 320 of file pointergestures.cpp.

void KWayland::Client::PointerPinchGesture::setup ( zwp_pointer_gesture_pinch_v1 * pointerpinchgesture )

Setup this PointerPinchGesture to manage the pointerpinchgesture.

When using PointerGestures::createPointerPinchGesture there is no need to call this method.

Definition at line 315 of file pointergestures.cpp.

void KWayland::Client::PointerPinchGesture::started	(	quint32	serial,
		quint32	time
	)

signal

A gesture got started.

Parameters

serial	Unique serial for this start gesture event.
time	Timestamp in milliseconds granularity

See also: updated; ended; cancelled

QPointer< Surface > KWayland::Client::PointerPinchGesture::surface ( ) const

The Surface on which this gesture is performed.

If no gesture is in progress the returned pointer is null.

Definition at line 348 of file pointergestures.cpp.

void KWayland::Client::PointerPinchGesture::updated	(	const QSizeF &	delta,
		qreal	scale,
		qreal	rotation,
		quint32	time
	)

signal

A gesture got updated.

Parameters

delta	relative coordinates of the logical center of the gesture compared to the previous event
scale	an absolute scale compared to the start
rotation	relative angle in degrees clockwise compared to the previous start or update event.
time	Timestamp in milliseconds granularity

See also: started; ended; cancelled

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

KDE's Doxygen guidelines are available online.

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KWayland::Client::PointerPinchGesture

Signals

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation