#include <qscroller_p.h>

Inheritance diagram for QScrollerPrivate:

Collaboration diagram for QScrollerPrivate:

Classes
struct	ScrollSegment

Public Types
enum	ScrollType { ScrollTypeFlick = 0 , ScrollTypeScrollTo , ScrollTypeOvershoot }

Public Slots
void	targetDestroyed ()

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Public Member Functions
	QScrollerPrivate (QScroller q, QObject target)

void	init ()

void	sendEvent (QObject o, QEvent e)

void	setState (QScroller::State s)

bool	pressWhileInactive (const QPointF &position, qint64 timestamp)

bool	moveWhilePressed (const QPointF &position, qint64 timestamp)

bool	releaseWhilePressed (const QPointF &position, qint64 timestamp)

bool	moveWhileDragging (const QPointF &position, qint64 timestamp)

bool	releaseWhileDragging (const QPointF &position, qint64 timestamp)

bool	pressWhileScrolling (const QPointF &position, qint64 timestamp)

void	timerTick ()

void	timerEventWhileDragging ()

void	timerEventWhileScrolling ()

bool	prepareScrolling (const QPointF &position)

void	handleDrag (const QPointF &position, qint64 timestamp)

QPointF	dpi () const

void	setDpi (const QPointF &dpi)

void	setDpiFromWidget (QWidget *widget)

void	updateVelocity (const QPointF &deltaPixelRaw, qint64 deltaTime)

void	pushSegment (ScrollType type, qreal deltaTime, qreal stopProgress, qreal startPos, qreal deltaPos, qreal stopPos, QEasingCurve::Type curve, Qt::Orientation orientation)

void	recalcScrollingSegments (bool forceRecalc=false)

qreal	scrollingSegmentsEndPos (Qt::Orientation orientation) const

bool	scrollingSegmentsValid (Qt::Orientation orientation) const

void	createScrollToSegments (qreal v, qreal deltaTime, qreal endPos, Qt::Orientation orientation, ScrollType type)

void	createScrollingSegments (qreal v, qreal startPos, qreal deltaTime, qreal deltaPos, Qt::Orientation orientation)

void	createScrollingSegments (const QPointF &v, const QPointF &startPos, const QPointF &ppm)

void	setContentPositionHelperDragging (const QPointF &deltaPos)

void	setContentPositionHelperScrolling ()

qreal	nextSnapPos (qreal p, int dir, Qt::Orientation orientation) const

int	frameRateSkip () const

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< QString >	bindableObjectName ()

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	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).

QThread *	thread () 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 >
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 >
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 QObjectList &	children () 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< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () 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`.

Static Public Member Functions
static qreal	nextSegmentPosition (QQueue< ScrollSegment > &segments, qint64 now, qreal oldPos)

static const char *	stateName (QScroller::State state)

static const char *	inputName (QScroller::Input input)

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)

Additional Inherited Members
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.

Protected Member Functions inherited from QObject
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 \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< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object

Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 44 of file qscroller_p.h.

Member Enumeration Documentation

◆ ScrollType

enum QScrollerPrivate::ScrollType

Enumerator
ScrollTypeFlick
ScrollTypeScrollTo
ScrollTypeOvershoot

Definition at line 57 of file qscroller_p.h.

Constructor & Destructor Documentation

◆ QScrollerPrivate()

QScrollerPrivate::QScrollerPrivate	(	QScroller *	q,
		QObject *	target )

Definition at line 841 of file qscroller.cpp.

References QObject::connect(), QObject::destroyed(), SIGNAL, SLOT, and targetDestroyed().

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Member Function Documentation

◆ createScrollingSegments() [1/2]

void QScrollerPrivate::createScrollingSegments	(	const QPointF &	v,
		const QPointF &	startPos,
		const QPointF &	ppm )

Definition at line 1350 of file qscroller.cpp.

References createScrollingSegments(), QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), differentialForProgress(), Qt::Horizontal, properties, sp, Qt::Vertical, QPointF::x(), and QPointF::y().

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◆ createScrollingSegments() [2/2]

void QScrollerPrivate::createScrollingSegments	(	qreal	v,
		qreal	startPos,
		qreal	deltaTime,
		qreal	deltaPos,
		Qt::Orientation	orientation )

Definition at line 1193 of file qscroller.cpp.

References QRectF::bottom(), contentPosRange, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), QSizeF::height(), Qt::Horizontal, QEasingCurve::InQuad, lastPosition, QRectF::left(), nextSnapPos(), QScrollerProperties::OvershootAlwaysOff, QScrollerProperties::OvershootAlwaysOn, policy, pressPosition, progressForValue(), properties, pushSegment(), qAbs(), qCDebug, qIsNaN(), qMin(), qSign(), QRectF::right(), ScrollTypeFlick, ScrollTypeOvershoot, sp, QRectF::top(), viewportSize, QSizeF::width(), QPointF::x(), xSegments, QPointF::y(), and ySegments.

Referenced by createScrollingSegments(), recalcScrollingSegments(), and releaseWhileDragging().

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◆ createScrollToSegments()

void QScrollerPrivate::createScrollToSegments	(	qreal	v,
		qreal	deltaTime,
		qreal	endPos,
		Qt::Orientation	orientation,
		ScrollType	type )

Creates the sections needed to scroll to the specific endPos to the segments queue.

Definition at line 1166 of file qscroller.cpp.

References contentPosition, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), Qt::Horizontal, QEasingCurve::InQuad, overshootPosition, properties, pushSegment(), Q_UNUSED, qCDebug, sp, QPointF::x(), xSegments, QPointF::y(), and ySegments.

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◆ dpi()

QPointF QScrollerPrivate::dpi ( ) const

Returns the resolution of the used screen.

Definition at line 976 of file qscroller.cpp.

References pixelPerMeter.

Referenced by setDpi().

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◆ frameRateSkip()

int QScrollerPrivate::frameRateSkip ( ) const

inline

Definition at line 109 of file qscroller_p.h.

References QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), QScrollerPropertiesPrivate::frameRate, and properties.

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◆ handleDrag()

void QScrollerPrivate::handleDrag	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1439 of file qscroller.cpp.

References contentPosRange, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), dragDistance, QRectF::height(), lastPosition, lastTimestamp, QScrollerProperties::OvershootAlwaysOn, position(), properties, qAbs(), qCDebug, releaseVelocity, QRectF::setX(), QPointF::setX(), QPointF::setY(), sp, updateVelocity(), and QRectF::width().

Referenced by moveWhileDragging(), moveWhilePressed(), and releaseWhileDragging().

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◆ init()

void QScrollerPrivate::init ( )

Definition at line 863 of file qscroller.cpp.

References monotonicTimer, setDpiFromWidget(), and QElapsedTimer::start().

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◆ inputName()

const char * QScrollerPrivate::inputName ( QScroller::Input input )

static

Definition at line 885 of file qscroller.cpp.

References QScroller::InputMove, QScroller::InputPress, and QScroller::InputRelease.

◆ moveWhileDragging()

bool QScrollerPrivate::moveWhileDragging	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1562 of file qscroller.cpp.

References handleDrag(), and position().

Referenced by QScroller::handleInput().

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◆ moveWhilePressed()

bool QScrollerPrivate::moveWhilePressed	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1513 of file qscroller.cpp.

References contentPosRange, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), QScroller::Dragging, handleDrag(), QRectF::height(), QScroller::Inactive, QScrollerProperties::OvershootAlwaysOn, position(), pressPosition, properties, qAbs(), setState(), sp, and QRectF::width().

Referenced by QScroller::handleInput().

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◆ nextSegmentPosition()

qreal QScrollerPrivate::nextSegmentPosition	(	QQueue< ScrollSegment > &	segments,
		qint64	now,
		qreal	oldPos )

static

Definition at line 1793 of file qscroller.cpp.

References now, pos, and QScrollerPrivate::ScrollSegment::stopPos.

Referenced by setContentPositionHelperScrolling().

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◆ nextSnapPos()

qreal QScrollerPrivate::nextSnapPos	(	qreal	p,
		int	dir,
		Qt::Orientation	orientation ) const

Returns the next snap point in direction. If direction >0 it will return the next snap point that is larger than the current position. If direction <0 it will return the next snap point that is smaller than the current position. If direction ==0 it will return the nearest snap point (or the current position if we are already on a snap point. Returns the nearest snap position or NaN if no such point could be found.

Definition at line 1853 of file qscroller.cpp.

References QRectF::bottom(), contentPosRange, dir, Qt::Horizontal, QRectF::left(), Q_INFINITY, Q_QNAN, qAbs(), qCeil(), qFloor(), qIsNaN(), qRound(), QRectF::right(), snapFirstX, snapFirstY, snapIntervalX, snapIntervalY, snapPositionsX, snapPositionsY, and QRectF::top().

Referenced by createScrollingSegments(), and scrollingSegmentsValid().

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◆ prepareScrolling()

bool QScrollerPrivate::prepareScrolling ( const QPointF & position )

Prepares scrolling by sending a QScrollPrepareEvent to the receiver widget. Returns true if the scrolling was accepted and a target was returned.

Definition at line 1386 of file qscroller.cpp.

References clampToRect(), contentPosition, contentPosRange, QRectF::height(), i, overshootPosition, position(), qCDebug, recalcScrollingSegments(), scene, QScroller::Scrolling, sendEvent(), setDpiFromWidget(), QRectF::setHeight(), QRectF::setWidth(), state, viewportSize, QGraphicsScene::views(), QRectF::width(), xSegments, and ySegments.

Referenced by pressWhileInactive().

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◆ pressWhileInactive()

bool QScrollerPrivate::pressWhileInactive	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1485 of file qscroller.cpp.

References contentPosRange, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), QRectF::isNull(), lastPosition, lastTimestamp, QScrollerProperties::OvershootAlwaysOn, position(), prepareScrolling(), QScroller::Pressed, pressPosition, pressTimestamp, properties, setState(), and sp.

Referenced by QScroller::handleInput().

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◆ pressWhileScrolling()

bool QScrollerPrivate::pressWhileScrolling	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1637 of file qscroller.cpp.

References QScrollerProperties::d, QScroller::Dragging, QScroller::Inactive, lastPosition, lastTimestamp, QScrollerPropertiesPrivate::maximumClickThroughVelocity, overshootPosition, position(), QScroller::Pressed, pressPosition, pressTimestamp, properties, and setState().

Referenced by QScroller::handleInput().

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◆ pushSegment()

void QScrollerPrivate::pushSegment	(	ScrollType	type,
		qreal	deltaTime,
		qreal	stopProgress,
		qreal	startPos,
		qreal	deltaPos,
		qreal	stopPos,
		QEasingCurve::Type	curve,
		Qt::Orientation	orientation )

Definition at line 1049 of file qscroller.cpp.

References QElapsedTimer::elapsed(), Qt::Horizontal, monotonicTimer, qCDebug, Qt::Vertical, xSegments, and ySegments.

Referenced by createScrollingSegments(), and createScrollToSegments().

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◆ recalcScrollingSegments()

void QScrollerPrivate::recalcScrollingSegments ( bool forceRecalc = false )

Clears the old segments and recalculates them if the current segments are not longer valid

Definition at line 1087 of file qscroller.cpp.

References contentPosition, createScrollingSegments(), Qt::Horizontal, overshootPosition, releaseVelocity, scrollingSegmentsValid(), and Qt::Vertical.

Referenced by prepareScrolling().

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◆ releaseWhileDragging()

bool QScrollerPrivate::releaseWhileDragging	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1579 of file qscroller.cpp.

References contentPosition, createScrollingSegments(), QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), handleDrag(), QScroller::Inactive, oldVelocity, overshootPosition, position(), pressPosition, pressTimestamp, properties, qBound(), qCDebug, releaseVelocity, QScroller::Scrolling, setState(), QPointF::setX(), QPointF::setY(), sp, QPointF::x(), xSegments, QPointF::y(), and ySegments.

Referenced by QScroller::handleInput().

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◆ releaseWhilePressed()

bool QScrollerPrivate::releaseWhilePressed	(	const QPointF &	position,
		qint64	timestamp )

Definition at line 1502 of file qscroller.cpp.

References QScroller::Inactive, overshootPosition, QScroller::Scrolling, and setState().

Referenced by QScroller::handleInput().

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◆ scrollingSegmentsEndPos()

qreal QScrollerPrivate::scrollingSegmentsEndPos ( Qt::Orientation orientation ) const

Returns the end position after the current scroll has finished.

Definition at line 1103 of file qscroller.cpp.

References contentPosition, Qt::Horizontal, overshootPosition, QPointF::x(), xSegments, QPointF::y(), and ySegments.

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◆ scrollingSegmentsValid()

bool QScrollerPrivate::scrollingSegmentsValid ( Qt::Orientation orientation ) const

Checks if the scroller segment end in a valid position.

Definition at line 1121 of file qscroller.cpp.

References QRectF::bottom(), contentPosRange, Qt::Horizontal, QRectF::left(), nextSnapPos(), qIsNaN(), QRectF::right(), ScrollTypeOvershoot, ScrollTypeScrollTo, QScrollerPrivate::ScrollSegment::stopPos, QRectF::top(), QScrollerPrivate::ScrollSegment::type, xSegments, and ySegments.

Referenced by recalcScrollingSegments().

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◆ sendEvent()

void QScrollerPrivate::sendEvent	(	QObject *	o,
		QEvent *	e )

Definition at line 869 of file qscroller.cpp.

References o, and qt_sendSpontaneousEvent().

Referenced by prepareScrolling(), setContentPositionHelperDragging(), setContentPositionHelperScrolling(), and setState().

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◆ setContentPositionHelperDragging()

void QScrollerPrivate::setContentPositionHelperDragging ( const QPointF & deltaPos )

Helps when setting the content position. It will try to move the content by the requested delta but stop in case when we are coming back from an overshoot or a scrollTo. It will also indicate a new overshooting condition by the overshootX and oversthootY flags.

In this cases it will reset the velocity variables and other flags.

Also keeps track of the current over-shooting value in overshootPosition.

deltaPos is the amount of pixels the current content position should be moved

Definition at line 1733 of file qscroller.cpp.

References clampToRect(), contentPosition, contentPosRange, QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), QScroller::Dragging, firstScroll, QRectF::height(), QSizeF::height(), QScrollerProperties::OvershootAlwaysOff, QScrollerProperties::OvershootAlwaysOn, overshootPosition, properties, qBound(), qCDebug, QScrollEvent::ScrollStarted, QScrollEvent::ScrollUpdated, sendEvent(), QPointF::setX(), QPointF::setY(), sp, state, viewportSize, QRectF::width(), QSizeF::width(), QPointF::x(), and QPointF::y().

Referenced by timerEventWhileDragging().

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◆ setContentPositionHelperScrolling()

void QScrollerPrivate::setContentPositionHelperScrolling ( )

Definition at line 1820 of file qscroller.cpp.

References clampToRect(), contentPosition, contentPosRange, QElapsedTimer::elapsed(), firstScroll, monotonicTimer, nextSegmentPosition(), now, overshootPosition, qCDebug, QScrollEvent::ScrollStarted, QScrollEvent::ScrollUpdated, sendEvent(), QPointF::setX(), QPointF::setY(), QPointF::x(), xSegments, QPointF::y(), and ySegments.

Referenced by timerEventWhileScrolling().

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◆ setDpi()

void QScrollerPrivate::setDpi ( const QPointF & dpi )

Sets the resolution used for scrolling. This resolution is only used by the kinetic scroller. If you change this then the scroller will behave quite different as a lot of the values are given in physical distances (millimeter).

Definition at line 987 of file qscroller.cpp.

References dpi(), and pixelPerMeter.

Referenced by setDpiFromWidget().

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◆ setDpiFromWidget()

void QScrollerPrivate::setDpiFromWidget ( QWidget * widget )

Sets the dpi used for scrolling to the value of the widget.

Definition at line 995 of file qscroller.cpp.

References QScreen::physicalDotsPerInchX, QScreen::physicalDotsPerInchY, QGuiApplication::primaryScreen, Q_ASSERT, screen, QWidget::screen(), setDpi(), and widget.

Referenced by init(), and prepareScrolling().

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◆ setState()

void QScrollerPrivate::setState ( QScroller::State newstate )

This function handles all state changes of the scroller.

Definition at line 1657 of file qscroller.cpp.

References contains(), contentPosition, dragDistance, QScroller::Dragging, emit, firstScroll, QScroller::Inactive, oldVelocity, overshootPosition, QScroller::Pressed, qCDebug, qSwap(), releaseVelocity, QScrollEvent::ScrollFinished, QScroller::Scrolling, sendEvent(), state, and stateName().

Referenced by moveWhilePressed(), pressWhileInactive(), pressWhileScrolling(), releaseWhileDragging(), releaseWhilePressed(), and timerEventWhileScrolling().

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◆ stateName()

const char * QScrollerPrivate::stateName ( QScroller::State state )

static

Definition at line 874 of file qscroller.cpp.

References QScroller::Dragging, QScroller::Inactive, QScroller::Pressed, QScroller::Scrolling, and state.

Referenced by setState().

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◆ targetDestroyed

void QScrollerPrivate::targetDestroyed ( )

slot

Definition at line 895 of file qscroller.cpp.

References q_ptr.

Referenced by QScrollerPrivate().

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◆ timerEventWhileDragging()

void QScrollerPrivate::timerEventWhileDragging ( )

Definition at line 1569 of file qscroller.cpp.

References dragDistance, qCDebug, and setContentPositionHelperDragging().

Referenced by timerTick().

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◆ timerEventWhileScrolling()

void QScrollerPrivate::timerEventWhileScrolling ( )

Definition at line 1628 of file qscroller.cpp.

References QScroller::Inactive, qCDebug, setContentPositionHelperScrolling(), setState(), xSegments, and ySegments.

Referenced by timerTick().

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◆ timerTick()

void QScrollerPrivate::timerTick ( )

Definition at line 903 of file qscroller.cpp.

References QScroller::Dragging, i, QScroller::Scrolling, state, state, timerEventWhileDragging(), timerEventWhileScrolling(), and void.

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◆ updateVelocity()

void QScrollerPrivate::updateVelocity	(	const QPointF &	deltaPixelRaw,
		qint64	deltaTime )

Updates the velocity during dragging. Sets releaseVelocity.

Definition at line 1006 of file qscroller.cpp.

References QScrollerProperties::d, QScopedPointer< T, Cleanup >::data(), properties, qBound(), qCDebug, qMin(), qSign(), releaseVelocity, QPointF::setX(), QPointF::setY(), sp, QPointF::x(), and QPointF::y().

Referenced by handleDrag().

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Member Data Documentation

◆ contentPosition

QPointF QScrollerPrivate::contentPosition

Definition at line 131 of file qscroller_p.h.

Referenced by createScrollToSegments(), prepareScrolling(), recalcScrollingSegments(), releaseWhileDragging(), scrollingSegmentsEndPos(), setContentPositionHelperDragging(), setContentPositionHelperScrolling(), and setState().

◆ contentPosRange

QRectF QScrollerPrivate::contentPosRange

Definition at line 130 of file qscroller_p.h.

Referenced by createScrollingSegments(), handleDrag(), moveWhilePressed(), nextSnapPos(), prepareScrolling(), pressWhileInactive(), scrollingSegmentsValid(), setContentPositionHelperDragging(), and setContentPositionHelperScrolling().

◆ dragDistance

QPointF QScrollerPrivate::dragDistance

Definition at line 147 of file qscroller_p.h.

Referenced by handleDrag(), setState(), and timerEventWhileDragging().

◆ enabled

bool QScrollerPrivate::enabled

Definition at line 136 of file qscroller_p.h.

◆ firstScroll

bool QScrollerPrivate::firstScroll

Definition at line 138 of file qscroller_p.h.

Referenced by setContentPositionHelperDragging(), setContentPositionHelperScrolling(), and setState().

◆ lastPosition

QPointF QScrollerPrivate::lastPosition

Definition at line 143 of file qscroller_p.h.

Referenced by createScrollingSegments(), handleDrag(), pressWhileInactive(), and pressWhileScrolling().

◆ lastTimestamp

qint64 QScrollerPrivate::lastTimestamp

Definition at line 145 of file qscroller_p.h.

Referenced by handleDrag(), pressWhileInactive(), and pressWhileScrolling().

◆ monotonicTimer

QElapsedTimer QScrollerPrivate::monotonicTimer

Definition at line 162 of file qscroller_p.h.

Referenced by init(), pushSegment(), and setContentPositionHelperScrolling().

◆ oldVelocity

QPointF QScrollerPrivate::oldVelocity

Definition at line 140 of file qscroller_p.h.

Referenced by releaseWhileDragging(), and setState().

◆ overshootPosition

QPointF QScrollerPrivate::overshootPosition

Definition at line 132 of file qscroller_p.h.

Referenced by createScrollToSegments(), prepareScrolling(), pressWhileScrolling(), recalcScrollingSegments(), releaseWhileDragging(), releaseWhilePressed(), scrollingSegmentsEndPos(), setContentPositionHelperDragging(), setContentPositionHelperScrolling(), and setState().

◆ pixelPerMeter

QPointF QScrollerPrivate::pixelPerMeter

Definition at line 160 of file qscroller_p.h.

Referenced by dpi(), and setDpi().

◆ pressPosition

QPointF QScrollerPrivate::pressPosition

Definition at line 142 of file qscroller_p.h.

Referenced by createScrollingSegments(), moveWhilePressed(), pressWhileInactive(), pressWhileScrolling(), and releaseWhileDragging().

◆ pressTimestamp

qint64 QScrollerPrivate::pressTimestamp

Definition at line 144 of file qscroller_p.h.

Referenced by pressWhileInactive(), pressWhileScrolling(), and releaseWhileDragging().

◆ properties

QScrollerProperties QScrollerPrivate::properties

Definition at line 120 of file qscroller_p.h.

Referenced by createScrollingSegments(), createScrollingSegments(), createScrollToSegments(), frameRateSkip(), handleDrag(), moveWhilePressed(), pressWhileInactive(), pressWhileScrolling(), releaseWhileDragging(), setContentPositionHelperDragging(), and updateVelocity().

◆ q_ptr

QScroller* QScrollerPrivate::q_ptr

Definition at line 169 of file qscroller_p.h.

Referenced by targetDestroyed().

◆ recognizer

QFlickGestureRecognizer* QScrollerPrivate::recognizer

Definition at line 122 of file qscroller_p.h.

◆ recognizerType

Qt::GestureType QScrollerPrivate::recognizerType

Definition at line 123 of file qscroller_p.h.

◆ releaseVelocity

QPointF QScrollerPrivate::releaseVelocity

Definition at line 164 of file qscroller_p.h.

Referenced by handleDrag(), recalcScrollingSegments(), releaseWhileDragging(), setState(), and updateVelocity().

◆ snapFirstX

qreal QScrollerPrivate::snapFirstX

Definition at line 154 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ snapFirstY

qreal QScrollerPrivate::snapFirstY

Definition at line 157 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ snapIntervalX

qreal QScrollerPrivate::snapIntervalX

Definition at line 155 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ snapIntervalY

qreal QScrollerPrivate::snapIntervalY

Definition at line 158 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ snapPositionsX

QList<qreal> QScrollerPrivate::snapPositionsX

Definition at line 153 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ snapPositionsY

QList<qreal> QScrollerPrivate::snapPositionsY

Definition at line 156 of file qscroller_p.h.

Referenced by nextSnapPos().

◆ state

QScroller::State QScrollerPrivate::state

Definition at line 137 of file qscroller_p.h.

Referenced by prepareScrolling(), setContentPositionHelperDragging(), setState(), stateName(), and timerTick().

◆ target

QObject* QScrollerPrivate::target

Definition at line 119 of file qscroller_p.h.

◆ viewportSize

QSizeF QScrollerPrivate::viewportSize

Definition at line 129 of file qscroller_p.h.

Referenced by createScrollingSegments(), prepareScrolling(), and setContentPositionHelperDragging().

◆ xSegments

QQueue<ScrollSegment> QScrollerPrivate::xSegments

Definition at line 149 of file qscroller_p.h.

Referenced by createScrollingSegments(), createScrollToSegments(), prepareScrolling(), pushSegment(), releaseWhileDragging(), scrollingSegmentsEndPos(), scrollingSegmentsValid(), setContentPositionHelperScrolling(), and timerEventWhileScrolling().

◆ ySegments

QQueue<ScrollSegment> QScrollerPrivate::ySegments

Definition at line 150 of file qscroller_p.h.

Referenced by createScrollingSegments(), createScrollToSegments(), prepareScrolling(), pushSegment(), releaseWhileDragging(), scrollingSegmentsEndPos(), scrollingSegmentsValid(), setContentPositionHelperScrolling(), and timerEventWhileScrolling().

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

qtbase/src/widgets/util/qscroller_p.h (05fc3aef53348fb58be6308076e000825b704e58)
qtbase/src/widgets/util/qscroller.cpp (71f156fff07f6c876941096134f6ee4ac90a9309)

Public Attributes
QObject *	target

QScrollerProperties	properties

QFlickGestureRecognizer *	recognizer

Qt::GestureType	recognizerType

QSizeF	viewportSize

QRectF	contentPosRange

QPointF	contentPosition

QPointF	overshootPosition

bool	enabled

QScroller::State	state

bool	firstScroll

QPointF	oldVelocity

QPointF	pressPosition

QPointF	lastPosition

qint64	pressTimestamp

qint64	lastTimestamp

QPointF	dragDistance

QQueue< ScrollSegment >	xSegments

QQueue< ScrollSegment >	ySegments

QList< qreal >	snapPositionsX

qreal	snapFirstX

qreal	snapIntervalX

QList< qreal >	snapPositionsY

qreal	snapFirstY

qreal	snapIntervalY

QPointF	pixelPerMeter

QElapsedTimer	monotonicTimer

QPointF	releaseVelocity

QScroller *	q_ptr

Classes

Public Types

Public Slots

Public Member Functions

Static Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ ScrollType

Constructor & Destructor Documentation

◆ QScrollerPrivate()

Member Function Documentation

◆ createScrollingSegments() [1/2]

◆ createScrollingSegments() [2/2]

◆ createScrollToSegments()

◆ dpi()

◆ frameRateSkip()

◆ handleDrag()

◆ init()

◆ inputName()

◆ moveWhileDragging()

◆ moveWhilePressed()

◆ nextSegmentPosition()

◆ nextSnapPos()

◆ prepareScrolling()

◆ pressWhileInactive()

◆ pressWhileScrolling()

◆ pushSegment()

◆ recalcScrollingSegments()

◆ releaseWhileDragging()

◆ releaseWhilePressed()

◆ scrollingSegmentsEndPos()

◆ scrollingSegmentsValid()

◆ sendEvent()

◆ setContentPositionHelperDragging()

◆ setContentPositionHelperScrolling()

◆ setDpi()

◆ setDpiFromWidget()

◆ setState()

◆ stateName()

◆ targetDestroyed

◆ timerEventWhileDragging()

◆ timerEventWhileScrolling()

◆ timerTick()

◆ updateVelocity()

Member Data Documentation

◆ contentPosition

◆ contentPosRange

◆ dragDistance

◆ enabled

◆ firstScroll

◆ lastPosition

◆ lastTimestamp

◆ monotonicTimer

◆ oldVelocity

◆ overshootPosition

◆ pixelPerMeter

◆ pressPosition

◆ pressTimestamp

◆ properties

◆ q_ptr

◆ recognizer

◆ recognizerType

◆ releaseVelocity

◆ snapFirstX

◆ snapFirstY

◆ snapIntervalX

◆ snapIntervalY

◆ snapPositionsX

◆ snapPositionsY

◆ state

◆ target

◆ viewportSize

◆ xSegments

◆ ySegments