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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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QQuickTouchPoint Class Reference

#include <qquickmultipointtoucharea_p.h>

Inheritance diagram for QQuickTouchPoint:
Collaboration diagram for QQuickTouchPoint:

Signals

void pressedChanged ()
void pointIdChanged ()
 Q_REVISION (2, 9) void uniqueIdChanged()
void xChanged ()
void yChanged ()
 Q_REVISION (2, 9) void ellipseDiametersChanged()
void pressureChanged ()
 Q_REVISION (2, 9) void rotationChanged()
void velocityChanged ()
void areaChanged ()
void startXChanged ()
void startYChanged ()
void previousXChanged ()
void previousYChanged ()
void sceneXChanged ()
void sceneYChanged ()
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.

Public Member Functions

 QQuickTouchPoint (bool qmlDefined=true)
int pointId () const
void setPointId (int id)
 \qmltype TouchPoint \nativetype QQuickTouchPoint \inqmlmodule QtQuick
QPointingDeviceUniqueId uniqueId () const
void setUniqueId (const QPointingDeviceUniqueId &id)
 \qmlproperty pointingDeviceUniqueId QtQuick::TouchPoint::uniqueId
qreal x () const
qreal y () const
void setPosition (QPointF pos)
 \qmlproperty real QtQuick::TouchPoint::x \qmlproperty real QtQuick::TouchPoint::y
QSizeF ellipseDiameters () const
void setEllipseDiameters (const QSizeF &d)
 \qmlproperty size QtQuick::TouchPoint::ellipseDiameters
qreal pressure () const
void setPressure (qreal pressure)
 \qmlproperty real QtQuick::TouchPoint::pressure \qmlproperty vector2d QtQuick::TouchPoint::velocity
qreal rotation () const
void setRotation (qreal r)
 \qmlproperty real QtQuick::TouchPoint::rotation
QVector2D velocity () const
void setVelocity (const QVector2D &velocity)
QRectF area () const
void setArea (const QRectF &area)
bool isQmlDefined () const
bool inUse () const
void setInUse (bool inUse)
bool pressed () const
void setPressed (bool pressed)
 \qmlproperty bool QtQuick::TouchPoint::pressed
qreal startX () const
void setStartX (qreal startX)
 \qmlproperty real QtQuick::TouchPoint::startX \qmlproperty real QtQuick::TouchPoint::startY
qreal startY () const
void setStartY (qreal startY)
qreal previousX () const
void setPreviousX (qreal previousX)
 \qmlproperty real QtQuick::TouchPoint::previousX \qmlproperty real QtQuick::TouchPoint::previousY
qreal previousY () const
void setPreviousY (qreal previousY)
qreal sceneX () const
void setSceneX (qreal sceneX)
 \qmlproperty real QtQuick::TouchPoint::sceneX \qmlproperty real QtQuick::TouchPoint::sceneY
qreal sceneY () const
void setSceneY (qreal sceneY)
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.
virtual bool eventFilter (QObject *watched, QEvent *event)
 Filters events if this object has been installed as an event filter for the watched object.
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< QStringbindableObjectName ()
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 isQmlObjectType () const
 Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
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).
QThreadthread () 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>
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>
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 QObjectListchildren () 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< QByteArraydynamicPropertyNames () const
QBindingStoragebindingStorage ()
const QBindingStoragebindingStorage () const
QObjectparent () 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.

Properties

int pointId
QPointingDeviceUniqueId uniqueId
bool pressed
qreal x
qreal y
QSizeF ellipseDiameters
qreal pressure
qreal rotation
QVector2D velocity
QRectF area
qreal startX
qreal startY
qreal previousX
qreal previousY
qreal sceneX
qreal sceneY
Properties inherited from QObject
QString objectName
 the name of this object

Friends

class QQuickMultiPointTouchArea

Additional Inherited Members

Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
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 Member Functions inherited from QObject
QObjectsender () 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 timerEvent (QTimerEvent *event)
 This event handler can be reimplemented in a subclass to receive timer events for the object.
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)
Protected Attributes inherited from QObject
QScopedPointer< QObjectDatad_ptr

Detailed Description

Definition at line 36 of file qquickmultipointtoucharea_p.h.

Constructor & Destructor Documentation

◆ QQuickTouchPoint()

QQuickTouchPoint::QQuickTouchPoint ( bool qmlDefined = true)
inline

Definition at line 60 of file qquickmultipointtoucharea_p.h.

Member Function Documentation

◆ area()

QRectF QQuickTouchPoint::area ( ) const
inline

Definition at line 86 of file qquickmultipointtoucharea_p.h.

◆ areaChanged

void QQuickTouchPoint::areaChanged ( )
signal

◆ ellipseDiameters()

QSizeF QQuickTouchPoint::ellipseDiameters ( ) const
inline

Definition at line 74 of file qquickmultipointtoucharea_p.h.

◆ inUse()

bool QQuickTouchPoint::inUse ( ) const
inline

Definition at line 91 of file qquickmultipointtoucharea_p.h.

◆ isQmlDefined()

bool QQuickTouchPoint::isQmlDefined ( ) const
inline

Definition at line 89 of file qquickmultipointtoucharea_p.h.

◆ pointId()

int QQuickTouchPoint::pointId ( ) const
inline

Definition at line 64 of file qquickmultipointtoucharea_p.h.

◆ pointIdChanged

void QQuickTouchPoint::pointIdChanged ( )
signal

◆ pressed()

bool QQuickTouchPoint::pressed ( ) const
inline

Definition at line 94 of file qquickmultipointtoucharea_p.h.

◆ pressedChanged

void QQuickTouchPoint::pressedChanged ( )
signal

◆ pressure()

qreal QQuickTouchPoint::pressure ( ) const
inline

Definition at line 77 of file qquickmultipointtoucharea_p.h.

◆ pressureChanged

void QQuickTouchPoint::pressureChanged ( )
signal

◆ previousX()

qreal QQuickTouchPoint::previousX ( ) const
inline

Definition at line 103 of file qquickmultipointtoucharea_p.h.

◆ previousXChanged

void QQuickTouchPoint::previousXChanged ( )
signal

◆ previousY()

qreal QQuickTouchPoint::previousY ( ) const
inline

Definition at line 106 of file qquickmultipointtoucharea_p.h.

◆ previousYChanged

void QQuickTouchPoint::previousYChanged ( )
signal

◆ Q_REVISION [1/3]

QQuickTouchPoint::Q_REVISION ( 2 ,
9  )
signal

◆ Q_REVISION [2/3]

QQuickTouchPoint::Q_REVISION ( 2 ,
9  )
signal

◆ Q_REVISION [3/3]

QQuickTouchPoint::Q_REVISION ( 2 ,
9  )
signal

◆ rotation()

qreal QQuickTouchPoint::rotation ( ) const
inline

Definition at line 80 of file qquickmultipointtoucharea_p.h.

◆ sceneX()

qreal QQuickTouchPoint::sceneX ( ) const
inline

Definition at line 109 of file qquickmultipointtoucharea_p.h.

◆ sceneXChanged

void QQuickTouchPoint::sceneXChanged ( )
signal

◆ sceneY()

qreal QQuickTouchPoint::sceneY ( ) const
inline

Definition at line 112 of file qquickmultipointtoucharea_p.h.

◆ sceneYChanged

void QQuickTouchPoint::sceneYChanged ( )
signal

◆ setArea()

void QQuickTouchPoint::setArea ( const QRectF & area)
Deprecated
\qmlproperty rectangle QtQuick::TouchPoint::area

A rectangle covering the area of the touch point, centered on the current position of the touch point.

It is deprecated because a touch point is more correctly modeled as an ellipse, whereas this rectangle represents the outer bounds of the ellipse after \l rotation.

Deprecated
\qmlproperty rectangle QtQuick::TouchPoint::area

A rectangle covering the area of the touch point, centered on the current position of the touch point.

It is deprecated because a touch point is more correctly modeled as an ellipse, whereas this rectangle represents the outer bounds of the ellipse after \l rotation.

Definition at line 147 of file qquickmultipointtoucharea.cpp.

◆ setEllipseDiameters()

void QQuickTouchPoint::setEllipseDiameters ( const QSizeF & d)

\qmlproperty size QtQuick::TouchPoint::ellipseDiameters

Since
5.9

This property holds the major and minor axes of the ellipse representing the covered area of the touch point.

Definition at line 79 of file qquickmultipointtoucharea.cpp.

◆ setInUse()

void QQuickTouchPoint::setInUse ( bool inUse)
inline

Definition at line 92 of file qquickmultipointtoucharea_p.h.

◆ setPointId()

QT_BEGIN_NAMESPACE void QQuickTouchPoint::setPointId ( int id)

\qmltype TouchPoint \nativetype QQuickTouchPoint \inqmlmodule QtQuick

Describes a touch point in a MultiPointTouchArea.

The TouchPoint type contains information about a touch point, such as the current position, pressure, and area.

\qmlproperty int QtQuick::TouchPoint::pointId

This property holds the point id of the touch point.

Each touch point within a MultiPointTouchArea will have a unique id.

Definition at line 43 of file qquickmultipointtoucharea.cpp.

◆ setPosition()

void QQuickTouchPoint::setPosition ( QPointF p)

\qmlproperty real QtQuick::TouchPoint::x \qmlproperty real QtQuick::TouchPoint::y

These properties hold the current position of the touch point.

Definition at line 58 of file qquickmultipointtoucharea.cpp.

◆ setPressed()

void QQuickTouchPoint::setPressed ( bool pressed)

\qmlproperty bool QtQuick::TouchPoint::pressed

This property holds whether the touch point is currently pressed.

Definition at line 160 of file qquickmultipointtoucharea.cpp.

◆ setPressure()

void QQuickTouchPoint::setPressure ( qreal pressure)

\qmlproperty real QtQuick::TouchPoint::pressure \qmlproperty vector2d QtQuick::TouchPoint::velocity

These properties hold additional information about the current state of the touch point.

\list

  • pressure is a value in the range of 0.0 to 1.0.
  • velocity is a vector with magnitude reported in pixels per second. \endlist

Not all touch devices support velocity. If velocity is not supported, it will be reported as 0,0.

Definition at line 101 of file qquickmultipointtoucharea.cpp.

◆ setPreviousX()

void QQuickTouchPoint::setPreviousX ( qreal previousX)

\qmlproperty real QtQuick::TouchPoint::previousX \qmlproperty real QtQuick::TouchPoint::previousY

These properties hold the previous position of the touch point.

Definition at line 197 of file qquickmultipointtoucharea.cpp.

◆ setPreviousY()

void QQuickTouchPoint::setPreviousY ( qreal previousY)

Definition at line 205 of file qquickmultipointtoucharea.cpp.

◆ setRotation()

void QQuickTouchPoint::setRotation ( qreal r)

\qmlproperty real QtQuick::TouchPoint::rotation

Since
5.9

This property holds the angular orientation of this touch point. The return value is in degrees, where zero (the default) indicates the finger or token is pointing upwards, a negative angle means it's rotated to the left, and a positive angle means it's rotated to the right. Most touchscreens do not detect rotation, so zero is the most common value.

See also
QEventPoint::rotation()

Definition at line 121 of file qquickmultipointtoucharea.cpp.

◆ setSceneX()

void QQuickTouchPoint::setSceneX ( qreal sceneX)

\qmlproperty real QtQuick::TouchPoint::sceneX \qmlproperty real QtQuick::TouchPoint::sceneY

These properties hold the current position of the touch point in scene coordinates.

Definition at line 220 of file qquickmultipointtoucharea.cpp.

◆ setSceneY()

void QQuickTouchPoint::setSceneY ( qreal sceneY)

Definition at line 228 of file qquickmultipointtoucharea.cpp.

◆ setStartX()

void QQuickTouchPoint::setStartX ( qreal startX)

\qmlproperty real QtQuick::TouchPoint::startX \qmlproperty real QtQuick::TouchPoint::startY

These properties hold the starting position of the touch point.

Definition at line 175 of file qquickmultipointtoucharea.cpp.

◆ setStartY()

void QQuickTouchPoint::setStartY ( qreal startY)

Definition at line 183 of file qquickmultipointtoucharea.cpp.

◆ setUniqueId()

void QQuickTouchPoint::setUniqueId ( const QPointingDeviceUniqueId & id)

\qmlproperty pointingDeviceUniqueId QtQuick::TouchPoint::uniqueId

Since
5.9

This property holds the unique ID of the touch point or token.

It is normally empty, because touchscreens cannot uniquely identify fingers. But when it is set, it is expected to uniquely identify a specific token (fiducial object).

Interpreting the contents of this ID requires knowledge of the hardware and drivers in use (e.g. various TUIO-based touch surfaces).

Definition at line 249 of file qquickmultipointtoucharea.cpp.

◆ setVelocity()

void QQuickTouchPoint::setVelocity ( const QVector2D & velocity)

Definition at line 129 of file qquickmultipointtoucharea.cpp.

◆ startX()

qreal QQuickTouchPoint::startX ( ) const
inline

Definition at line 97 of file qquickmultipointtoucharea_p.h.

◆ startXChanged

void QQuickTouchPoint::startXChanged ( )
signal

◆ startY()

qreal QQuickTouchPoint::startY ( ) const
inline

Definition at line 100 of file qquickmultipointtoucharea_p.h.

◆ startYChanged

void QQuickTouchPoint::startYChanged ( )
signal

◆ uniqueId()

QPointingDeviceUniqueId QQuickTouchPoint::uniqueId ( ) const
inline

Definition at line 67 of file qquickmultipointtoucharea_p.h.

◆ velocity()

QVector2D QQuickTouchPoint::velocity ( ) const
inline

Definition at line 83 of file qquickmultipointtoucharea_p.h.

◆ velocityChanged

void QQuickTouchPoint::velocityChanged ( )
signal

◆ x()

qreal QQuickTouchPoint::x ( ) const
inline

Definition at line 70 of file qquickmultipointtoucharea_p.h.

◆ xChanged

void QQuickTouchPoint::xChanged ( )
signal

◆ y()

qreal QQuickTouchPoint::y ( ) const
inline

Definition at line 71 of file qquickmultipointtoucharea_p.h.

◆ yChanged

void QQuickTouchPoint::yChanged ( )
signal

◆ QQuickMultiPointTouchArea

friend class QQuickMultiPointTouchArea
friend

Definition at line 134 of file qquickmultipointtoucharea_p.h.

Property Documentation

◆ area

QRectF QQuickTouchPoint::area
read

Definition at line 48 of file qquickmultipointtoucharea_p.h.

◆ ellipseDiameters

QSizeF QQuickTouchPoint::ellipseDiameters
read

Definition at line 44 of file qquickmultipointtoucharea_p.h.

◆ pointId

int QQuickTouchPoint::pointId
read

Definition at line 39 of file qquickmultipointtoucharea_p.h.

◆ pressed

bool QQuickTouchPoint::pressed
read

Definition at line 41 of file qquickmultipointtoucharea_p.h.

◆ pressure

qreal QQuickTouchPoint::pressure
read

Definition at line 45 of file qquickmultipointtoucharea_p.h.

◆ previousX

qreal QQuickTouchPoint::previousX
read

Definition at line 52 of file qquickmultipointtoucharea_p.h.

◆ previousY

qreal QQuickTouchPoint::previousY
read

Definition at line 53 of file qquickmultipointtoucharea_p.h.

◆ rotation

qreal QQuickTouchPoint::rotation
read

Definition at line 46 of file qquickmultipointtoucharea_p.h.

◆ sceneX

qreal QQuickTouchPoint::sceneX
read

Definition at line 54 of file qquickmultipointtoucharea_p.h.

◆ sceneY

qreal QQuickTouchPoint::sceneY
read

Definition at line 55 of file qquickmultipointtoucharea_p.h.

◆ startX

qreal QQuickTouchPoint::startX
read

Definition at line 50 of file qquickmultipointtoucharea_p.h.

◆ startY

qreal QQuickTouchPoint::startY
read

Definition at line 51 of file qquickmultipointtoucharea_p.h.

◆ uniqueId

QPointingDeviceUniqueId QQuickTouchPoint::uniqueId
read

Definition at line 40 of file qquickmultipointtoucharea_p.h.

◆ velocity

QVector2D QQuickTouchPoint::velocity
read

Definition at line 47 of file qquickmultipointtoucharea_p.h.

◆ x

qreal QQuickTouchPoint::x
read

Definition at line 42 of file qquickmultipointtoucharea_p.h.

◆ y

qreal QQuickTouchPoint::y
read

Definition at line 43 of file qquickmultipointtoucharea_p.h.


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