The QPanGesture class describes a panning gesture made by the user. More...

#include <qgesture.h>

Inheritance diagram for QPanGesture:

Public Functions
qreal	acceleration () const

QPointF	delta () const

QPointF	lastOffset () const

QPointF	offset () const

	QPanGesture (QObject *parent=0)

void	setAcceleration (qreal value)

void	setLastOffset (const QPointF &value)

void	setOffset (const QPointF &value)

Public Functions inherited from QGesture
GestureCancelPolicy	gestureCancelPolicy () const

Qt::GestureType	gestureType () const

bool	hasHotSpot () const

QPointF	hotSpot () const

	QGesture (QObject *parent=0)
	Constructs a new gesture object with the given parent. More...

void	setGestureCancelPolicy (GestureCancelPolicy policy)

void	setHotSpot (const QPointF &value)

Qt::GestureState	state () const

void	unsetHotSpot ()

	~QGesture ()
	Destroys the gesture object. More...

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...

Properties
qreal	acceleration
	the acceleration in the motion of the touch point for this gesture More...

QPointF	delta
	the offset from the previous input position to the current input More...

QPointF	lastOffset
	the last offset recorded for this gesture More...

QPointF	offset
	the total offset from the first input position to the current input position More...

Friends
class	QPanGestureRecognizer

class	QWinNativePanGestureRecognizer

Additional Inherited Members
Public Types inherited from QGesture
enum	GestureCancelPolicy { CancelNone = 0, CancelAllInContext }
	This enum describes how accepting a gesture can cancel other gestures automatically. More...

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 QGesture
	QGesture (QGesturePrivate &dd, QObject *parent)

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

The QPanGesture class describes a panning gesture made by the user.

Since: 4.6

For an overview of gesture handling in Qt and information on using gestures in your applications, see the Gestures Programming document.

See also: QPinchGesture, QSwipeGesture

Definition at line 107 of file qgesture.h.

Constructors and Destructors

◆ QPanGesture()

QPanGesture::QPanGesture ( QObject * parent = 0 )

Warning: This function is not part of the public interface.

Definition at line 331 of file qgesture.cpp.

     : QGesture(*new QPanGesturePrivate, parent)
 {
     d_func()->gestureType = Qt::PanGesture;
 }

Functions

◆ acceleration()

qreal QPanGesture::acceleration ( ) const

Referenced by QPanGesture().

◆ delta()

QPointF QPanGesture::delta ( ) const

Referenced by QPanGesture().

◆ lastOffset()

QPointF QPanGesture::lastOffset ( ) const

Referenced by QPanGesture().

◆ offset()

QPointF QPanGesture::offset ( ) const

Referenced by QPanGesture().

◆ setAcceleration()

void QPanGesture::setAcceleration ( qreal value )

Definition at line 369 of file qgesture.cpp.

Referenced by QMacPinchGestureRecognizer::reset().

 {
     d_func()->acceleration = value;
 }

◆ setLastOffset()

void QPanGesture::setLastOffset ( const QPointF & value )

Definition at line 359 of file qgesture.cpp.

Referenced by QMacPinchGestureRecognizer::reset().

 {
     d_func()->lastOffset = value;
 }

◆ setOffset()

void QPanGesture::setOffset ( const QPointF & value )

Definition at line 364 of file qgesture.cpp.

Referenced by QMacPinchGestureRecognizer::reset().

 {
     d_func()->offset = value;
 }

Friends and Related Functions

◆ QPanGestureRecognizer

friend class QPanGestureRecognizer

friend

Definition at line 131 of file qgesture.h.

◆ QWinNativePanGestureRecognizer

friend class QWinNativePanGestureRecognizer

friend

Definition at line 132 of file qgesture.h.

Properties

◆ acceleration

qreal QPanGesture::acceleration

private

the acceleration in the motion of the touch point for this gesture

Definition at line 115 of file qgesture.h.

◆ delta

QPointF QPanGesture::delta

private

the offset from the previous input position to the current input

This is essentially the same as the difference between offset() and lastOffset().

Definition at line 114 of file qgesture.h.

Referenced by QAbstractScrollArea::event(), and QPlainTextEdit::event().

◆ lastOffset

QPointF QPanGesture::lastOffset

private

the last offset recorded for this gesture

The last offset contains the change in position of the user's input as reported in the offset property when a previous gesture event was delivered for this gesture.

If no previous event was delivered with information about this gesture (i.e., this gesture object contains information about the first movement in the gesture) then this property contains a zero size.

Definition at line 112 of file qgesture.h.

◆ offset

QPointF QPanGesture::offset

private

the total offset from the first input position to the current input position

The offset measures the total change in position of the user's input covered by the gesture on the input device.

Definition at line 113 of file qgesture.h.

Referenced by QPlainTextEdit::event(), and QMacPinchGestureRecognizer::reset().

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

/src/gui/kernel/qgesture.h
/src/gui/kernel/qgesture.cpp

Public Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QPanGesture()

Functions

◆ acceleration()

◆ delta()

◆ lastOffset()

◆ offset()

◆ setAcceleration()

◆ setLastOffset()

◆ setOffset()

Friends and Related Functions

◆ QPanGestureRecognizer

◆ QWinNativePanGestureRecognizer

Properties

◆ acceleration

◆ delta

◆ lastOffset

◆ offset