#include <qdeclarativesmoothedanimation_p_p.h>

Inheritance diagram for QSmoothedAnimation:

Public Functions
int	duration () const

void	init ()

	QSmoothedAnimation (QObject *parent=0)

void	restart ()

Public Functions inherited from QAbstractAnimation
int	currentLoop () const

int	currentLoopTime () const
	Returns the current time inside the current loop. More...

int	currentTime () const

Direction	direction () const

QAnimationGroup *	group () const
	If this animation is part of a QAnimationGroup, this function returns a pointer to the group; otherwise, it returns 0. More...

int	loopCount () const

	QAbstractAnimation (QObject *parent=0)
	Constructs the QAbstractAnimation base class, and passes parent to QObject's constructor. More...

void	setDirection (Direction direction)

void	setLoopCount (int loopCount)

State	state () const

int	totalDuration () const
	Returns the total and effective duration of the animation, including the loop count. More...

virtual	~QAbstractAnimation ()
	Stops the animation if it's running, then destroys the QAbstractAnimation. 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	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...

Public Variables
qreal	initialVelocity

int	maximumEasingTime

QDeclarativeSmoothedAnimation::ReversingMode	reversingMode

QDeclarativeProperty	target

qreal	to

qreal	trackVelocity

int	userDuration

qreal	velocity

Protected Functions
virtual void	updateCurrentTime (int)
	This pure virtual function is called every time the animation's currentTime changes. More...

virtual void	updateState (QAbstractAnimation::State, QAbstractAnimation::State)
	This virtual function is called by QAbstractAnimation when the state of the animation is changed from oldState to newState. More...

Protected Functions inherited from QAbstractAnimation
bool	event (QEvent *event)
	Reimplemented Function More...

	QAbstractAnimation (QAbstractAnimationPrivate &dd, QObject *parent=0)

virtual void	updateDirection (QAbstractAnimation::Direction direction)
	This virtual function is called by QAbstractAnimation when the direction of the animation is changed. More...

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...

Private Functions
void	delayedStop ()

qreal	easeFollow (qreal)

bool	recalc ()

Properties
qreal	a

qreal	d

QTimer	delayedStopTimer

int	finalDuration

qreal	initialValue

bool	invert

int	lastTime

qreal	s

qreal	sd

qreal	sp

qreal	td

qreal	tf

qreal	tp

qreal	vi

qreal	vp

Additional Inherited Members
Public Types inherited from QAbstractAnimation
enum	DeletionPolicy { KeepWhenStopped = 0, DeleteWhenStopped }

enum	Direction { Forward, Backward }
	This enum describes the direction of the animation when in Running state. More...

enum	State { Stopped, Paused, Running }
	This enum describes the state of the animation. More...

Public Slots inherited from QAbstractAnimation
void	pause ()
	Pauses the animation. More...

void	resume ()
	Resumes the animation after it was paused. More...

void	setCurrentTime (int msecs)

void	setPaused (bool)
	If paused is true, the animation is paused. More...

void	start (QAbstractAnimation::DeletionPolicy policy=KeepWhenStopped)
	Starts the animation. More...

void	stop ()
	Stops the animation. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals inherited from QAbstractAnimation
void	currentLoopChanged (int currentLoop)
	QAbstractAnimation emits this signal whenever the current loop changes. More...

void	directionChanged (QAbstractAnimation::Direction)
	QAbstractAnimation emits this signal whenever the direction has been changed. More...

void	finished ()
	QAbstractAnimation emits this signal after the animation has stopped and has reached the end. More...

void	stateChanged (QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
	QAbstractAnimation emits this signal whenever the state of the animation has changed from oldState to newState. 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 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

Definition at line 68 of file qdeclarativesmoothedanimation_p_p.h.

Constructors and Destructors

◆ QSmoothedAnimation()

QSmoothedAnimation::QSmoothedAnimation ( QObject * parent = 0 )

Definition at line 60 of file qdeclarativesmoothedanimation.cpp.

     : QAbstractAnimation(parent), to(0), velocity(200), userDuration(-1), maximumEasingTime(-1),
       reversingMode(QDeclarativeSmoothedAnimation::Eased), initialVelocity(0),
       trackVelocity(0), initialValue(0), invert(false), finalDuration(-1), lastTime(0)
 {
     delayedStopTimer.setInterval(DELAY_STOP_TIMER_INTERVAL);
     delayedStopTimer.setSingleShot(true);
     connect(&delayedStopTimer, SIGNAL(timeout()), this, SLOT(stop()));
 }

Functions

◆ delayedStop()

void QSmoothedAnimation::delayedStop ( )

private

Definition at line 85 of file qdeclarativesmoothedanimation.cpp.

Referenced by easeFollow().

 {
     if (!delayedStopTimer.isActive())
         delayedStopTimer.start();
 }

◆ duration()

int QSmoothedAnimation::duration ( ) const

virtual

Implements QAbstractAnimation.

Definition at line 91 of file qdeclarativesmoothedanimation.cpp.

 {
     return -1;
 }

◆ easeFollow()

qreal QSmoothedAnimation::easeFollow ( qreal time_seconds )

private

Definition at line 163 of file qdeclarativesmoothedanimation.cpp.

Referenced by updateCurrentTime().

 {
     qreal value;
     if (time_seconds < tp) {
         trackVelocity = vi + time_seconds * a;
         value = qreal(0.5) * a * time_seconds * time_seconds + vi * time_seconds;
     } else if (time_seconds < td) {
         time_seconds -= tp;
         trackVelocity = vp;
         value = sp + time_seconds * vp;
     } else if (time_seconds < tf) {
         time_seconds -= td;
         trackVelocity = vp - time_seconds * a;
         value = sd - qreal(0.5) * d * time_seconds * time_seconds + vp * time_seconds;
     } else {
         trackVelocity = 0;
         value = s;
         delayedStop();
     }
 
     // to normalize 's' between [0..1], divide 'value' by 's'
     return value;
 }

◆ init()

void QSmoothedAnimation::init ( )

Definition at line 198 of file qdeclarativesmoothedanimation.cpp.

Referenced by restart(), QDeclarativeSmoothedAnimation::transition(), QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations(), and updateState().

 {
     if (velocity == 0) {
         stop();
         return;
     }
 
     if (delayedStopTimer.isActive())
         delayedStopTimer.stop();
 
     initialValue = target.read().toReal();
     lastTime = this->currentTime();
 
     if (to == initialValue) {
         stop();
         return;
     }
 
     bool hasReversed = trackVelocity != qreal(0.) &&
                       ((!invert) == ((initialValue - to) > 0));
 
     if (hasReversed) {
         switch (reversingMode) {
             default:
             case QDeclarativeSmoothedAnimation::Eased:
                 initialVelocity = -trackVelocity;
                 break;
             case QDeclarativeSmoothedAnimation::Sync:
                 QDeclarativePropertyPrivate::write(target, to,
                                                    QDeclarativePropertyPrivate::BypassInterceptor
                                                    | QDeclarativePropertyPrivate::DontRemoveBinding);
                 trackVelocity = 0;
                 stop();
                 return;
             case QDeclarativeSmoothedAnimation::Immediate:
                 initialVelocity = 0;
                 break;
         }
     }
 
     trackVelocity = initialVelocity;
 
     invert = (to < initialValue);
 
     if (!recalc()) {
         QDeclarativePropertyPrivate::write(target, to,
                                            QDeclarativePropertyPrivate::BypassInterceptor
                                            | QDeclarativePropertyPrivate::DontRemoveBinding);
         stop();
         return;
     }
 }

◆ recalc()

bool QSmoothedAnimation::recalc ( )

private

Definition at line 96 of file qdeclarativesmoothedanimation.cpp.

Referenced by init().

 {
     s = to - initialValue;
     vi = initialVelocity;
 
     s = (invert? qreal(-1.0): qreal(1.0)) * s;
 
     if (userDuration > 0 && velocity > 0) {
         tf = s / velocity;
         if (tf > (userDuration / qreal(1000.))) tf = (userDuration / qreal(1000.));
     } else if (userDuration > 0) {
         tf = userDuration / qreal(1000.);
     } else if (velocity > 0) {
         tf = s / velocity;
     } else {
         return false;
     }
 
     finalDuration = ceil(tf * qreal(1000.0));
 
     if (maximumEasingTime == 0) {
         a = 0;
         d = 0;
         tp = 0;
         td = tf;
         vp = velocity;
         sp = 0;
         sd = s;
     } else if (maximumEasingTime != -1 && tf > (maximumEasingTime / qreal(1000.))) {
         qreal met = maximumEasingTime / qreal(1000.);
         td = tf - met;
 
         qreal c1 = td;
         qreal c2 = (tf - td) * vi - tf * velocity;
         qreal c3 = qreal(-0.5) * (tf - td) * vi * vi;
 
         qreal vp1 = (-c2 + qSqrt(c2 * c2 - 4 * c1 * c3)) / (qreal(2.) * c1);
 
         vp = vp1;
         a = vp / met;
         d = a;
         tp = (vp - vi) / a;
         sp = vi * tp + qreal(0.5) * a * tp * tp;
         sd = sp + (td - tp) * vp;
     } else {
         qreal c1 = qreal(0.25) * tf * tf;
         qreal c2 = qreal(0.5) * vi * tf - s;
         qreal c3 = qreal(-0.25) * vi * vi;
 
         qreal a1 = (-c2 + qSqrt(c2 * c2 - 4 * c1 * c3)) / (qreal(2.) * c1);
 
         qreal tp1 = qreal(0.5) * tf - qreal(0.5) * vi / a1;
         qreal vp1 = a1 * tp1 + vi;
 
         qreal sp1 = qreal(0.5) * a1 * tp1 * tp1 + vi * tp1;
 
         a = a1;
         d = a1;
         tp = tp1;
         td = tp1;
         vp = vp1;
         sp = sp1;
         sd = sp1;
     }
     return true;
 }

◆ restart()

void QSmoothedAnimation::restart ( )

Definition at line 70 of file qdeclarativesmoothedanimation.cpp.

 {
     initialVelocity = trackVelocity;
     if (state() != QAbstractAnimation::Running)
         start();
     else
         init();
 }

◆ updateCurrentTime()

void QSmoothedAnimation::updateCurrentTime ( int currentTime )

protectedvirtual

This pure virtual function is called every time the animation's currentTime changes.

See also: updateState()

Implements QAbstractAnimation.

Definition at line 187 of file qdeclarativesmoothedanimation.cpp.

 {
     qreal time_seconds = qreal(t - lastTime) / qreal(1000.);
 
     qreal value = easeFollow(time_seconds);
     value *= (invert? qreal(-1.0): qreal(1.0));
     QDeclarativePropertyPrivate::write(target, initialValue + value,
                                        QDeclarativePropertyPrivate::BypassInterceptor
                                        | QDeclarativePropertyPrivate::DontRemoveBinding);
 }

◆ updateState()

void QSmoothedAnimation::updateState	(	QAbstractAnimation::State	newState,
		QAbstractAnimation::State	oldState
	)

protectedvirtual

This virtual function is called by QAbstractAnimation when the state of the animation is changed from oldState to newState.

See also: start(), stop(), pause(), resume()

Reimplemented from QAbstractAnimation.

Definition at line 79 of file qdeclarativesmoothedanimation.cpp.

 {
     if (newState == QAbstractAnimation::Running)
         init();
 }

Properties

◆ a

qreal QSmoothedAnimation::a

private

Definition at line 102 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ d

qreal QSmoothedAnimation::d

private

Definition at line 103 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ delayedStopTimer

QTimer QSmoothedAnimation::delayedStopTimer

private

Definition at line 118 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by delayedStop(), init(), and QSmoothedAnimation().

◆ finalDuration

int QSmoothedAnimation::finalDuration

private

Definition at line 99 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by recalc().

◆ initialValue

qreal QSmoothedAnimation::initialValue

private

Definition at line 95 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), recalc(), and updateCurrentTime().

◆ initialVelocity

qreal QSmoothedAnimation::initialVelocity

Definition at line 80 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), recalc(), restart(), and QDeclarativeSmoothedAnimation::transition().

◆ invert

bool QSmoothedAnimation::invert

private

Definition at line 97 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), recalc(), and updateCurrentTime().

◆ lastTime

int QSmoothedAnimation::lastTime

private

Definition at line 113 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), and updateCurrentTime().

◆ maximumEasingTime

int QSmoothedAnimation::maximumEasingTime

Definition at line 77 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by recalc(), QDeclarativeSmoothedAnimation::transition(), and QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations().

◆ reversingMode

QDeclarativeSmoothedAnimation::ReversingMode QSmoothedAnimation::reversingMode

Definition at line 78 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), QDeclarativeSmoothedAnimation::transition(), and QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations().

◆ s

qreal QSmoothedAnimation::s

private

Definition at line 111 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ sd

qreal QSmoothedAnimation::sd

private

Definition at line 109 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ sp

qreal QSmoothedAnimation::sp

private

Definition at line 108 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ target

QDeclarativeProperty QSmoothedAnimation::target

Definition at line 83 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), QDeclarativeSmoothedAnimation::transition(), and updateCurrentTime().

◆ td

qreal QSmoothedAnimation::td

private

Definition at line 106 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ tf

qreal QSmoothedAnimation::tf

private

Definition at line 104 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ to

qreal QSmoothedAnimation::to

Definition at line 73 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), recalc(), and QDeclarativeSmoothedAnimation::transition().

◆ tp

qreal QSmoothedAnimation::tp

private

Definition at line 105 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ trackVelocity

qreal QSmoothedAnimation::trackVelocity

Definition at line 81 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), init(), restart(), and QDeclarativeSmoothedAnimation::transition().

◆ userDuration

int QSmoothedAnimation::userDuration

Definition at line 75 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by recalc(), QDeclarativeSmoothedAnimation::transition(), and QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations().

◆ velocity

qreal QSmoothedAnimation::velocity

Definition at line 74 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by init(), recalc(), QDeclarativeSmoothedAnimation::transition(), and QDeclarativeSmoothedAnimationPrivate::updateRunningAnimations().

◆ vi

qreal QSmoothedAnimation::vi

private

Definition at line 110 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

◆ vp

qreal QSmoothedAnimation::vp

private

Definition at line 107 of file qdeclarativesmoothedanimation_p_p.h.

Referenced by easeFollow(), and recalc().

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

/src/declarative/util/qdeclarativesmoothedanimation_p_p.h
/src/declarative/util/qdeclarativesmoothedanimation.cpp

Public Functions

Public Variables

Protected Functions

Private Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QSmoothedAnimation()

Functions

◆ delayedStop()

◆ duration()

◆ easeFollow()

◆ init()

◆ recalc()

◆ restart()

◆ updateCurrentTime()

◆ updateState()

Properties

◆ a

◆ d

◆ delayedStopTimer

◆ finalDuration

◆ initialValue

◆ initialVelocity

◆ invert

◆ lastTime

◆ maximumEasingTime

◆ reversingMode

◆ s

◆ sd

◆ sp

◆ target

◆ td

◆ tf

◆ to

◆ tp

◆ trackVelocity

◆ userDuration

◆ velocity

◆ vi

◆ vp