QFlickGestureRecognizer Class Reference

#include <qflickgesture_p.h>

Inheritance diagram for QFlickGestureRecognizer:

Collaboration diagram for QFlickGestureRecognizer:

Public Member Functions
	QFlickGestureRecognizer (Qt::MouseButton button)
QGesture *	create (QObject *target) override
	\reimp
QGestureRecognizer::Result	recognize (QGesture *state, QObject *watched, QEvent *event) override
void	reset (QGesture *state) override
	\reimp
Public Member Functions inherited from QGestureRecognizer
	QGestureRecognizer ()
	Constructs a new gesture recognizer object.
virtual	~QGestureRecognizer ()
	Destroys the gesture recognizer.
virtual QGesture *	create (QObject *target)
	This function is called by Qt to create a new QGesture object for the given target (QWidget or QGraphicsObject).
virtual Result	recognize (QGesture *state, QObject *watched, QEvent *event)=0
	Handles the given event for the watched object, updating the state of the gesture object as required, and returns a suitable result for the current recognition step.
virtual void	reset (QGesture *state)
	This function is called by the framework to reset a given gesture.

Additional Inherited Members
Public Types inherited from QGestureRecognizer
enum	ResultFlag {   Ignore = 0x0001 , MayBeGesture = 0x0002 , TriggerGesture = 0x0004 , FinishGesture = 0x0008 ,   CancelGesture = 0x0010 , ResultState_Mask = 0x00ff , ConsumeEventHint = 0x0100 , ResultHint_Mask = 0xff00 }
	This enum describes the result of the current event filtering step in a gesture recognizer state machine. More...
Static Public Member Functions inherited from QGestureRecognizer
static Qt::GestureType	registerRecognizer (QGestureRecognizer *recognizer)
	Registers the given recognizer in the gesture framework and returns a gesture ID for it.
static void	unregisterRecognizer (Qt::GestureType type)
	Unregisters all gesture recognizers of the specified type.

Detailed Description

Definition at line 56 of file qflickgesture_p.h.

Constructor & Destructor Documentation

QFlickGestureRecognizer()

QFlickGestureRecognizer::QFlickGestureRecognizer

(

Qt::MouseButton

button

)

Definition at line 296 of file qflickgesture.cpp.

References button.

Member Function Documentation

create()

QGesture * QFlickGestureRecognizer::create ( QObject *  target )

overridevirtual

\reimp

Reimplemented from QGestureRecognizer.

Definition at line 303 of file qflickgesture.cpp.

References Qt::NoButton, and QGraphicsItem::setAcceptTouchEvents().

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recognize()

QGestureRecognizer::Result QFlickGestureRecognizer::recognize ( QGesture *  state, QObject *  watched, QEvent *  event  )

overridevirtual

The recognize function detects a touch event suitable to start the attached QScroller. The QFlickGesture will be triggered as soon as the scroller is no longer in the state QScroller::Inactive or QScroller::Pressed. It will be finished or canceled at the next QEvent::TouchEnd. Note that the QScroller might continue scrolling (kinetically) at this point.

Implements QGestureRecognizer.

Definition at line 321 of file qflickgesture.cpp.

References QScroller::activeScrollers(), QList< T >::at(), QSinglePointEvent::button(), QGraphicsSceneMouseEvent::button(), QSinglePointEvent::buttons(), QGraphicsSceneMouseEvent::buttons(), QGestureRecognizer::CancelGesture, QGestureRecognizer::ConsumeEventHint, QRegion::contains(), d, QScroller::Dragging, QGestureRecognizer::FinishGesture, QSinglePointEvent::globalPosition(), QEventPoint::globalPosition, QEvent::GraphicsSceneMouseMove, QEvent::GraphicsSceneMousePress, QEvent::GraphicsSceneMouseRelease, QScroller::handleInput(), QGestureRecognizer::Ignore, QScroller::Inactive, QScroller::InputMove, QScroller::InputPress, QScroller::InputRelease, PressDelayHandler::instance(), QList< T >::isEmpty(), QGestureRecognizer::MayBeGesture, QInputEvent::modifiers(), QGraphicsSceneMouseEvent::modifiers(), QEvent::MouseButtonDblClick, QEvent::MouseButtonPress, QEvent::MouseButtonRelease, QEvent::MouseMove, QScrollerProperties::MousePressEventDelay, Qt::NoButton, Qt::NoModifier, QPointerEvent::pointingDevice(), QPointerEvent::points(), PressDelayHandler::pressed(), QScroller::Pressed, Q_FALLTHROUGH, Q_UNUSED, qobject_cast< QWidget * >(), QT_CONFIG, scene, QGraphicsSceneMouseEvent::scenePos(), QEventPoint::scenePosition, QEventPoint::scenePressPosition, QGraphicsSceneMouseEvent::screenPos(), scroller, PressDelayHandler::scrollerBecameActive(), QScroller::scrollerProperties, PressDelayHandler::scrollerWasIntercepted(), QScroller::Scrolling, QScrollerProperties::scrollMetric(), QList< T >::size(), QElapsedTimer::start(), state, QScroller::state, QScroller::stop(), QPointF::toPoint(), QVariant::toReal(), QEvent::TouchBegin, QEvent::TouchEnd, QInputDevice::TouchPad, QEvent::TouchUpdate, QRegion::translated(), QGestureRecognizer::TriggerGesture, QInputDevice::type, QGraphicsScene::views(), and QEvent::Wheel.

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reset()

void QFlickGestureRecognizer::reset ( QGesture *  state )

overridevirtual

\reimp

Reimplemented from QGestureRecognizer.

Definition at line 631 of file qflickgesture.cpp.

References QGestureRecognizer::reset(), and state.

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

• qtbase/src/widgets/util/qflickgesture_p.h
• qtbase/src/widgets/util/qflickgesture.cpp