The QParallelAnimationGroup class provides a parallel group of animations. More...

#include <qparallelanimationgroup.h>

Inheritance diagram for QParallelAnimationGroup:

Public Functions
int	duration () const
	Reimplemented Function More...

	QParallelAnimationGroup (QObject *parent=0)
	Constructs a QParallelAnimationGroup. More...

	~QParallelAnimationGroup ()
	Destroys the animation group. More...

Public Functions inherited from QAnimationGroup
void	addAnimation (QAbstractAnimation *animation)
	Adds animation to this group. More...

QAbstractAnimation *	animationAt (int index) const
	Returns a pointer to the animation at index in this group. More...

int	animationCount () const
	Returns the number of animations managed by this group. More...

void	clear ()
	Removes and deletes all animations in this animation group, and resets the current time to 0. More...

int	indexOfAnimation (QAbstractAnimation *animation) const
	Returns the index of animation. More...

void	insertAnimation (int index, QAbstractAnimation *animation)
	Inserts animation into this animation group at index. More...

	QAnimationGroup (QObject *parent=0)
	Constructs a QAnimationGroup. More...

void	removeAnimation (QAbstractAnimation *animation)
	Removes animation from this group. More...

QAbstractAnimation *	takeAnimation (int index)
	Returns the animation at index and removes it from the animation group. More...

	~QAnimationGroup ()
	Destroys the animation group. More...

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...

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

	QParallelAnimationGroup (QParallelAnimationGroupPrivate &dd, QObject *parent)

void	updateCurrentTime (int currentTime)
	Reimplemented Function More...

void	updateDirection (QAbstractAnimation::Direction direction)
	Reimplemented Function More...

void	updateState (QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
	Reimplemented Function More...

Protected Functions inherited from QAnimationGroup
	QAnimationGroup (QAnimationGroupPrivate &dd, QObject *parent)

Protected Functions inherited from QAbstractAnimation
	QAbstractAnimation (QAbstractAnimationPrivate &dd, QObject *parent=0)

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...

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

The QParallelAnimationGroup class provides a parallel group of animations.

Since: 4.6

QParallelAnimationGroup–a container for animations–starts all its animations when it is started itself, i.e., runs all animations in parallel. The animation group finishes when the longest lasting animation has finished.

You can treat QParallelAnimation as any other QAbstractAnimation, e.g., pause, resume, or add it to other animation groups.

QParallelAnimationGroup *group = new QParallelAnimationGroup;
group->addAnimation(anim1);
group->addAnimation(anim2);
group->start();

In this example, anim1 and anim2 are two QPropertyAnimation that have already been set up.

See also: QAnimationGroup, QPropertyAnimation, {The Animation Framework}

Definition at line 56 of file qparallelanimationgroup.h.

Constructors and Destructors

◆ QParallelAnimationGroup() [1/2]

QParallelAnimationGroup::QParallelAnimationGroup ( QObject * parent = 0 )

Constructs a QParallelAnimationGroup.

parent is passed to QObject's constructor.

Definition at line 86 of file qparallelanimationgroup.cpp.

     : QAnimationGroup(*new QParallelAnimationGroupPrivate, parent)
 {
 }

◆ ~QParallelAnimationGroup()

QParallelAnimationGroup::~QParallelAnimationGroup ( )

Destroys the animation group.

It will also destroy all its animations.

Definition at line 103 of file qparallelanimationgroup.cpp.

104 {

105 }

◆ QParallelAnimationGroup() [2/2]

QParallelAnimationGroup::QParallelAnimationGroup	(	QParallelAnimationGroupPrivate &	dd,
		QObject *	parent
	)

protected

Warning: This function is not part of the public interface.

Definition at line 94 of file qparallelanimationgroup.cpp.

     : QAnimationGroup(dd, parent)
 {
 }

Functions

◆ duration()

int QParallelAnimationGroup::duration ( ) const

virtual

Reimplemented Function

Implements QAbstractAnimation.

Definition at line 110 of file qparallelanimationgroup.cpp.

Referenced by updateCurrentTime(), updateDirection(), and ParallelAnimationWrapper::updateState().

 {
     Q_D(const QParallelAnimationGroup);
     int ret = 0;
 
     for (int i = 0; i < d->animations.size(); ++i) {
         QAbstractAnimation *animation = d->animations.at(i);
         const int currentDuration = animation->totalDuration();
         if (currentDuration == -1)
             return -1; // Undetermined length
 
         ret = qMax(ret, currentDuration);
     }
 
     return ret;
 }

◆ event()

bool QParallelAnimationGroup::event ( QEvent * event )

protectedvirtual

Reimplemented Function

Reimplemented from QAnimationGroup.

Definition at line 340 of file qparallelanimationgroup.cpp.

 {
     return QAnimationGroup::event(event);
 }

◆ updateCurrentTime()

void QParallelAnimationGroup::updateCurrentTime ( int currentTime )

protectedvirtual

Reimplemented Function

Implements QAbstractAnimation.

Definition at line 130 of file qparallelanimationgroup.cpp.

 {
     Q_D(QParallelAnimationGroup);
     if (d->animations.isEmpty())
         return;
 
     if (d->currentLoop > d->lastLoop) {
         // simulate completion of the loop
         int dura = duration();
         if (dura > 0) {
             for (int i = 0; i < d->animations.size(); ++i) {
                 QAbstractAnimation *animation = d->animations.at(i);
                 if (animation->state() != QAbstractAnimation::Stopped)
                     d->animations.at(i)->setCurrentTime(dura);   // will stop
             }
         }
     } else if (d->currentLoop < d->lastLoop) {
         // simulate completion of the loop seeking backwards
         for (int i = 0; i < d->animations.size(); ++i) {
             QAbstractAnimation *animation = d->animations.at(i);
             //we need to make sure the animation is in the right state
             //and then rewind it
             d->applyGroupState(animation);
             animation->setCurrentTime(0);
             animation->stop();
         }
     }
 
 #ifdef QANIMATION_DEBUG
     qDebug("QParallellAnimationGroup %5d: setCurrentTime(%d), loop:%d, last:%d, timeFwd:%d, lastcurrent:%d, %d",
         __LINE__, d->currentTime, d->currentLoop, d->lastLoop, timeFwd, d->lastCurrentTime, state());
 #endif
     // finally move into the actual time of the current loop
     for (int i = 0; i < d->animations.size(); ++i) {
         QAbstractAnimation *animation = d->animations.at(i);
         const int dura = animation->totalDuration();
         //if the loopcount is bigger we should always start all animations
         if (d->currentLoop > d->lastLoop
             //if we're at the end of the animation, we need to start it if it wasn't already started in this loop
             //this happens in Backward direction where not all animations are started at the same time
             || d->shouldAnimationStart(animation, d->lastCurrentTime > dura /*startIfAtEnd*/)) {
             d->applyGroupState(animation);
         }
 
         if (animation->state() == state()) {
             animation->setCurrentTime(currentTime);
             if (dura > 0 && currentTime > dura)
                 animation->stop();
         }
     }
     d->lastLoop = d->currentLoop;
     d->lastCurrentTime = currentTime;
 }

◆ updateDirection()

void QParallelAnimationGroup::updateDirection ( QAbstractAnimation::Direction direction )

protectedvirtual

Reimplemented Function

Reimplemented from QAbstractAnimation.

Definition at line 316 of file qparallelanimationgroup.cpp.

 {
     Q_D(QParallelAnimationGroup);
     //we need to update the direction of the current animation
     if (state() != Stopped) {
         for (int i = 0; i < d->animations.size(); ++i) {
             QAbstractAnimation *animation = d->animations.at(i);
             animation->setDirection(direction);
         }
     } else {
         if (direction == Forward) {
             d->lastLoop = 0;
             d->lastCurrentTime = 0;
         } else {
             // Looping backwards with loopCount == -1 does not really work well...
             d->lastLoop = (d->loopCount == -1 ? 0 : d->loopCount - 1);
             d->lastCurrentTime = duration();
         }
     }
 }

◆ updateState()

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

protectedvirtual

Reimplemented Function

Reimplemented from QAbstractAnimation.

Reimplemented in ParallelAnimationWrapper.

Definition at line 187 of file qparallelanimationgroup.cpp.

Referenced by ParallelAnimationWrapper::updateState().

 {
     Q_D(QParallelAnimationGroup);
     QAnimationGroup::updateState(newState, oldState);
 
     switch (newState) {
     case Stopped:
         for (int i = 0; i < d->animations.size(); ++i)
             d->animations.at(i)->stop();
         d->disconnectUncontrolledAnimations();
         break;
     case Paused:
         for (int i = 0; i < d->animations.size(); ++i)
             if (d->animations.at(i)->state() == Running)
                 d->animations.at(i)->pause();
         break;
     case Running:
         d->connectUncontrolledAnimations();
         for (int i = 0; i < d->animations.size(); ++i) {
             QAbstractAnimation *animation = d->animations.at(i);
             if (oldState == Stopped)
                 animation->stop();
             animation->setDirection(d->direction);
             if (d->shouldAnimationStart(animation, oldState == Stopped))
                 animation->start();
         }
         break;
     }
 }

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

/src/corelib/animation/qparallelanimationgroup.h
/src/corelib/animation/qparallelanimationgroup.cpp

Public Functions

Protected Functions

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QParallelAnimationGroup() [1/2]

◆ ~QParallelAnimationGroup()

◆ QParallelAnimationGroup() [2/2]

Functions

◆ duration()

◆ event()

◆ updateCurrentTime()

◆ updateDirection()

◆ updateState()