KWayland::Client::PointerPinchGesture Class Reference

#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 const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo ()
void	dumpObjectInfo () const const
void	dumpObjectTree ()
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_DISABLE_COPY (Class)
	Q_DISABLE_COPY_MOVE (Class)
	Q_DISABLE_MOVE (Class)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qFindChild (const QObject *obj, const QString &name)
QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)
QList< T >	qFindChildren (const QObject *obj, const QString &name)
T	qobject_cast (QObject *object)
T	qobject_cast (const QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
QThread *	thread () const 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)
Public Attributes inherited from QObject
typedef	QObjectList
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 const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const 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 290 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 311 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 329 of file pointergestures.cpp.

bool KWayland::Client::PointerPinchGesture::isValid

(

)

const

Returns

true if managing a zwp_pointer_gesture_pinch_v1.

Definition at line 324 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 306 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 301 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 334 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

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

• pointergestures.h
• pointergestures.cpp