Qt 4.8
Public Functions | Properties | Friends | List of all members
QPanGesture Class Reference

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

#include <qgesture.h>

Inheritance diagram for QPanGesture:
QGesture QObject

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 QObjectListchildren () 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< QByteArraydynamicPropertyNames () 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 >
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 QMetaObjectmetaObject () 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
 
QObjectparent () 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...
 
QThreadthread () const
 Returns the thread in which the object lives. More...
 
QObjectUserDatauserData (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...
 
QObjectsender () 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< QObjectDatad_ptr
 
- Static Protected Variables inherited from QObject
static const QMetaObject staticQtMetaObject
 

Detailed Description

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

Since
4.6
pangesture.png

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.

332  : QGesture(*new QPanGesturePrivate, parent)
333 {
334  d_func()->gestureType = Qt::PanGesture;
335 }
QGesture(QObject *parent=0)
Constructs a new gesture object with the given parent.
Definition: qgesture.cpp:104

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().

370 {
371  d_func()->acceleration = value;
372 }

◆ setLastOffset()

void QPanGesture::setLastOffset ( const QPointF value)

Definition at line 359 of file qgesture.cpp.

Referenced by QMacPinchGestureRecognizer::reset().

360 {
361  d_func()->lastOffset = value;
362 }

◆ setOffset()

void QPanGesture::setOffset ( const QPointF value)

Definition at line 364 of file qgesture.cpp.

Referenced by QMacPinchGestureRecognizer::reset().

365 {
366  d_func()->offset = value;
367 }

Friends and Related Functions

◆ QPanGestureRecognizer

Definition at line 131 of file qgesture.h.

◆ QWinNativePanGestureRecognizer

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: