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QtCore.QTimeLine Class Reference

The QTimeLine class provides a timeline for controlling animations. More...

Inheritance diagram for QtCore.QTimeLine:
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Collaboration diagram for QtCore.QTimeLine:
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Public Types

enum  CurveShape {
  CosineCurve = 5, EaseInCurve = 0, EaseInOutCurve = 2, EaseOutCurve = 1,
  LinearCurve = 3, SineCurve = 4
}
  More...
 
enum  Direction { Backward = 1, Forward = 0 }
  More...
 
enum  State { NotRunning = 0, Paused = 1, Running = 2 }
  More...
 

Public Member Functions

 QTimeLine (int duration=1000, QObject parent=null)
 
 
override void CreateProxy ()
 
new int CurrentFrame ()
 
 
new double CurrentValue ()
 
 
new int FrameForTime (int msec)
 
 
new void Resume ()
 
 
new void SetFrameRange (int startFrame, int endFrame)
 
 
new void SetPaused (bool paused)
 
 
new void Start ()
 
 
new QTimeLine.State state ()
 
 
new void Stop ()
 
 
new void ToggleDirection ()
 
 
virtual double ValueForTime (int msec)
 
 
new void Dispose ()
 
- Public Member Functions inherited from QtCore.QObject
 QObject (QObject parent=null)
 
 
new bool BlockSignals (bool b)
 
 
new
System.Collections.Generic.List
< QObject > 		Children ()
 
 
new bool Connect (QObject sender, string signal, string member, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
 
 
new void DeleteLater ()
 
 
new bool Disconnect (QObject receiver, string member=null)
 
 
new bool Disconnect (string signal=null, QObject receiver=null, string member=null)
 
 
new void DumpObjectInfo ()
 
 
new void DumpObjectTree ()
 
 
new
System.Collections.Generic.List
< QByteArray > 		DynamicPropertyNames ()
 
 
virtual bool OnEvent (QEvent arg1)
 
 
virtual bool EventFilter (QObject arg1, QEvent arg2)
 
 
new bool Inherits (string classname)
 
 
new void InstallEventFilter (QObject arg1)
 
 
new bool IsWidgetType ()
 
 
new void KillTimer (int id)
 
 
new object Property (string name)
 
 
new void RemoveEventFilter (QObject arg1)
 
 
new bool SetProperty (string name, object value)
 
 
new void SetUserData (uint id, QObjectUserData data)
 
new bool SignalsBlocked ()
 
 
new int StartTimer (int interval)
 
 
new QObjectUserData UserData (uint id)
 
new void Dispose ()
 
- Public Member Functions inherited from QtCore.Qt
delegate QTextStream FuncQTextStreamQTextStream (QTextStream qTextStream)
 
delegate string FuncStringQByteArray (QByteArray qByteArray)
 
delegate QByteArray FuncQByteArrayString (string @string)
 
delegate void ActionQtMsgTypeString (QtMsgType qtMsgType, string @string)
 
delegate QObject FuncQObject ()
 

Static Public Member Functions

static string Tr (string s, string c=null)
 
static string Tr (string s, string c, int n)
 
static string TrUtf8 (string s, string c=null)
 
static string TrUtf8 (string s, string c, int n)
 
- Static Public Member Functions inherited from QtCore.QObject
static bool Connect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod method, Qt.ConnectionType type=Qt.ConnectionType.AutoConnection)
 
 
static bool Connect (QObject sender, string signal, QObject receiver, string member, Qt.ConnectionType arg5=Qt.ConnectionType.AutoConnection)
 
 
static bool Disconnect (QObject sender, QMetaMethod signal, QObject receiver, QMetaMethod member)
 
 
static bool Disconnect (QObject sender, string signal, QObject receiver, string member)
 
 
static uint RegisterUserData ()
 
static string Tr (string s, string c=null)
 
 
static string Tr (string s, string c, int n)
 
 
static string TrUtf8 (string s, string c=null)
 
 
static string TrUtf8 (string s, string c, int n)
 
 
- Static Public Member Functions inherited from QtCore.Qt
static QDataStream Write (QDataStream s, object p)
 
static QDataStream Write (QDataStream arg1, QSizeF arg2)
 
static QTextStream Write (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Write (QDataStream arg1, QPoint arg2)
 
static QDataStream Write (QDataStream arg1, QLineF arg2)
 
static QDataStream Write (QDataStream arg1, QPointF arg2)
 
static QDataStream Write (QDataStream arg1, QChar arg2)
 
static QDataStream Write (QDataStream arg1, QByteArray arg2)
 
static QDataStream Write (QDataStream arg1, QEasingCurve arg2)
 
static QDataStream Write (QDataStream arg1, QRectF arg2)
 
static QDataStream Write (QDataStream arg1, QDateTime arg2)
 
static QDataStream Write (QDataStream arg1, QUrl arg2)
 
static QDataStream Write (QDataStream arg1, QTime arg2)
 
static QDataStream Write (QDataStream arg1, QLocale arg2)
 
static QDataStream Write (QDataStream arg1, QBitArray arg2)
 
static QDataStream Write (QDataStream arg1, QUuid arg2)
 
static QDataStream Write (QDataStream arg1, QLine arg2)
 
static QDataStream Write (QDataStream arg1, QDate arg2)
 
static QDataStream Write (QDataStream @out, QRegExp regExp)
 
static QDataStream Write (QDataStream arg1, QRect arg2)
 
static QDataStream Write (QDataStream arg1, QSize arg2)
 
static QDataStream Write (QDataStream s, QVariant.Type p)
 
static QDataStream Write (QDataStream arg1, string arg2)
 
static QDataStream Write (QDataStream @out, System.Collections.Generic.List< string > list)
 
static QDataStream Read (QDataStream arg1, QChar arg2)
 
static QDataStream Read (QDataStream arg1, QLocale arg2)
 
static QDataStream Read (QDataStream arg1, QRect arg2)
 
static QDataStream Read (QDataStream arg1, QEasingCurve arg2)
 
static QDataStream Read (QDataStream arg1, QDate arg2)
 
static QDataStream Read (QDataStream arg1, QUrl arg2)
 
static QDataStream Read (QDataStream arg1, QUuid arg2)
 
static QTextStream Read (QTextStream s, Qt.FuncQTextStreamQTextStream f)
 
static QDataStream Read (QDataStream arg1, QLineF arg2)
 
static QDataStream Read (QDataStream arg1, QRectF arg2)
 
static QDataStream Read (QDataStream arg1, QPointF arg2)
 
static QDataStream Read (QDataStream arg1, QLine arg2)
 
static QDataStream Read (QDataStream arg1, QBitArray arg2)
 
static QDataStream Read (QDataStream arg1, QSize arg2)
 
static QDataStream Read (QDataStream arg1, QDateTime arg2)
 
static QDataStream Read (QDataStream arg1, QTime arg2)
 
static QDataStream Read (QDataStream arg1, QPoint arg2)
 
static QDataStream Read (QDataStream @in, QRegExp regExp)
 
static QDataStream Read (QDataStream s, object p)
 
static QDataStream Read (QDataStream arg1, QByteArray arg2)
 
static QDataStream Read (QDataStream arg1, QSizeF arg2)
 
static QDataStream Read (QDataStream arg1, string arg2)
 
static QDataStream Read (QDataStream s, QVariant.Type p)
 
static QDataStream Read (QDataStream @in, System.Collections.Generic.List< string > list)
 
static double qAcos (double v)
 
static void qAddPostRoutine (System.Action arg1)
 
static string qAppName ()
 
static double qAsin (double v)
 
static double qAtan (double v)
 
static double qAtan2 (double x, double y)
 
static void qBadAlloc ()
 
static int qCeil (double v)
 
static ushort qChecksum (string s, uint len)
 
static QByteArray qCompress (QByteArray data)
 
static QByteArray qCompress (QByteArray data, int compressionLevel=-1)
 
static QByteArray qCompress (Pointer< byte > data, int nbytes)
 
static QByteArray qCompress (Pointer< byte > data, int nbytes, int compressionLevel=-1)
 
static double qCos (double v)
 
static double qExp (double v)
 
static double qFabs (double v)
 
static double qFastCos (double x)
 
static double qFastSin (double x)
 
static string qFlagLocation (string method)
 
static int qFloor (double v)
 
static bool qFuzzyCompare (double p1, double p2)
 
static bool qFuzzyCompare (float p1, float p2)
 
static bool qFuzzyIsNull (double d)
 
static bool qFuzzyIsNull (float f)
 
static uint qHash (QBitArray key)
 
static uint qHash (QChar key)
 
static uint qHash (QStringRef key)
 
static uint qHash (QUrl url)
 
static uint qHash (QPersistentModelIndex index)
 
static uint qHash (QByteArray key)
 
static uint qHash (QModelIndex index)
 
static uint qHash (uint key)
 
static uint qHash (sbyte key)
 
static uint qHash (byte key)
 
static uint qHash (short key)
 
static uint qHash (NativeLong key)
 
static uint qHash (ushort key)
 
static uint qHash (long key)
 
static uint qHash (ulong key)
 
static uint qHash (int key)
 
static uint qHash (string key)
 
static uint qHash (NativeULong key)
 
static double qInf ()
 
static Qt.ActionQtMsgTypeString qInstallMsgHandler (Qt.ActionQtMsgTypeString arg1)
 
static int qIntCast (float f)
 
static int qIntCast (double f)
 
static bool qIsFinite (double d)
 
static bool qIsFinite (float f)
 
static bool qIsInf (float f)
 
static bool qIsInf (double d)
 
static bool qIsNaN (float f)
 
static bool qIsNaN (double d)
 
static bool qIsNull (float f)
 
static bool qIsNull (double d)
 
static double qLn (double v)
 
static double qPow (double x, double y)
 
static double qQNaN ()
 
static void qRegisterStaticPluginInstanceFunction (Qt.FuncQObject function)
 
static void qRemovePostRoutine (System.Action arg1)
 
static int qRound (double d)
 
static long qRound64 (double d)
 
static double qSNaN ()
 
static bool qSharedBuild ()
 
static double qSin (double v)
 
static double qSqrt (double v)
 
static bool qStringComparisonHelper (QStringRef s1, string s2)
 
static double qTan (double v)
 
static QByteArray qUncompress (QByteArray data)
 
static QByteArray qUncompress (Pointer< byte > data, int nbytes)
 
static string qVersion ()
 
static void Qbswap_helper (Pointer< byte > src, Pointer< byte > dest, int size)
 
static QByteArray Qgetenv (string varName)
 
static bool Qputenv (string varName, QByteArray value)
 
static int Qrand ()
 
static void Qsrand (uint seed)
 
static int Qstrcmp (QByteArray str1, QByteArray str2)
 
static int Qstrcmp (QByteArray str1, string str2)
 
static int Qstrcmp (string str1, QByteArray str2)
 
static int Qstrcmp (string str1, string str2)
 
static Pointer< sbyte > Qstrcpy (Pointer< sbyte > dst, string src)
 
static Pointer< sbyte > Qstrdup (string arg1)
 
static int Qstricmp (string arg1, string arg2)
 
static uint Qstrlen (string str)
 
static int Qstrncmp (string str1, string str2, uint len)
 
static Pointer< sbyte > Qstrncpy (Pointer< sbyte > dst, string src, uint len)
 
static int Qstrnicmp (string arg1, string arg2, uint len)
 
static uint Qstrnlen (string str, uint maxlen)
 
static string QtTrId (string id, int n=-1)
 

Protected Member Functions

 QTimeLine (System.Type dummy)
 
new void OnFinished ()
 
 
new void OnFrameChanged (int arg1)
 
 
new void OnStateChanged (QTimeLine.State newState)
 
 
override void OnTimerEvent (QTimerEvent @event)
 
 
new void OnValueChanged (double x)
 
 
- Protected Member Functions inherited from QtCore.QObject
 QObject (System.Type dummy)
 
virtual void OnChildEvent (QChildEvent arg1)
 
 
virtual void ConnectNotify (string signal)
 
 
virtual void OnCustomEvent (QEvent arg1)
 
 
new void OnDestroyed (QObject arg1=null)
 
 
virtual void DisconnectNotify (string signal)
 
 
new int Receivers (string signal)
 
 
new QObject Sender ()
 
 
new int SenderSignalIndex ()
 
 
virtual void OnTimerEvent (QTimerEvent arg1)
 
 

Properties

Slot< System.Double > ValueChanged
 
 
Slot< System.Int32 > FrameChanged
 
 
Slot< QTimeLine.State > StateChanged
 
 
Slot Finished
 
 
new int EndFrame [get, set]
 
 
new int StartFrame [get, set]
 
 
new int Duration [get, set]
 
 
new int UpdateInterval [get, set]
 
 
new int CurrentTime [get, set]
 
 
new Direction direction [get, set]
 
 
new int LoopCount [get, set]
 
 
new CurveShape curveShape [get, set]
 
 
new QEasingCurve EasingCurve [get, set]
 
static new QMetaObject StaticMetaObject [get]
 
new IQTimeLineSignals Emit [get]
 
- Properties inherited from QtCore.QObject
virtual EventHandler
< QEventArgs< QChildEvent > > 		ChildEvent
 
 
virtual EventHandler
< QEventArgs< QEvent > > 		CustomEvent
 
 
virtual EventHandler
< QEventArgs< QEvent > > 		Event
 
 
virtual EventHandler
< QEventArgs< QTimerEvent > > 		TimerEvent
 
 
Slot< QObject > DestroyedQObject
 
Slot Destroyed
 
 
new QObject Parent [get, set]
 
 
virtual System.IntPtr SmokeObject [get, set]
 
new string ObjectName [get, set]
 
 
static new QMetaObject StaticMetaObject [get]
 
 
static new QMetaObject StaticQtMetaObject [get]
 
new IQObjectSignals Emit [get]
 

Additional Inherited Members

- Protected Attributes inherited from QtCore.QObject
object Q_EMIT = null
 
SmokeInvocation interceptor
 
readonly List< QEventHandler > eventFilters = new List<QEventHandler>()
 

Detailed Description

The QTimeLine class provides a timeline for controlling animations.

It's most commonly used to animate a GUI control by calling a slot periodically. You can construct a timeline by passing its duration in milliseconds to QTimeLine's constructor. The timeline's duration describes for how long the animation will run. Then you set a suitable frame range by calling setFrameRange(). Finally connect the frameChanged() signal to a suitable slot in the widget you wish to animate (e.g., setValue() in QProgressBar). When you proceed to calling start(), QTimeLine will enter Running state, and start emitting frameChanged() at regular intervals, causing your widget's connected property's value to grow from the lower end to the upper and of your frame range, at a steady rate. You can specify the update interval by calling setUpdateInterval(). When done, QTimeLine enters NotRunning state, and emits finished().

Example:

...

progressBar = new QProgressBar(this);

progressBar->setRange(0, 100);

// Construct a 1-second timeline with a frame range of 0 - 100

QTimeLine *timeLine = new QTimeLine(1000, this);

timeLine->setFrameRange(0, 100);

connect(timeLine, SIGNAL(frameChanged(int)), progressBar, SLOT(setValue(int)));

// Clicking the push button will start the progress bar animation

pushButton = new QPushButton(tr("Start animation"), this);

connect(pushButton, SIGNAL(clicked()), timeLine, SLOT(start()));

...

You can also use QTimeLine with the Graphics View framework for animations. The QGraphicsItemAnimation class implements animation of QGraphicsItems with a timeline.

By default the timeline runs once, from the beginning and towards the end, upon which you must call start() again to restart from the beginning. To make the timeline loop, you can call setLoopCount(), passing the number of times the timeline should run before finishing. The direction can also be changed, causing the timeline to run backward, by calling setDirection(). You can also pause and unpause the timeline while it's running by calling setPaused(). For interactive control, the setCurrentTime() function is provided, which sets the time position of the time line directly. Although most useful in NotRunning state, (e.g., connected to a valueChanged() signal in a QSlider,) this function can be called at any time.

The frame interface is useful for standard widgets, but QTimeLine can be used to control any type of animation. The heart of QTimeLine lies in the valueForTime() function, which generates a value between 0 and 1 for a given time. This value is typically used to describe the steps of an animation, where 0 is the first step of an animation, and 1 is the last step. When running, QTimeLine generates values between 0 and 1 by calling valueForTime() and emitting valueChanged(). By default, valueForTime() applies an interpolation algorithm to generate these value. You can choose from a set of predefined timeline algorithms by calling setCurveShape().

Note that by default, QTimeLine uses the EaseInOut curve shape, which provides a value that grows slowly, then grows steadily, and finally grows slowly. For a custom timeline, you can reimplement valueForTime(), in which case QTimeLine's curveShape property is ignored.

See also QProgressBar, QProgressDialog, and QGraphicsItemAnimation.

Member Enumeration Documentation

enum QtCore.QTimeLine.CurveShape

This enum describes the default shape of QTimeLine's value curve. The default, shape is EaseInOutCurve. The curve defines the relation between the value and the timeline.

See also setCurveShape().

Enumerator:
CosineCurve 

The value grows cosinusoidally.

EaseInCurve 

The value starts growing slowly, then increases in speed.

EaseInOutCurve 

The value starts growing slowly, then runs steadily, then grows slowly again.

EaseOutCurve 

The value starts growing steadily, then ends slowly.

LinearCurve 

The value grows linearly (e.g., if the duration is 1000 ms, the value at time 500 ms is 0.5).

SineCurve 

The value grows sinusoidally.

enum QtCore.QTimeLine.Direction

This enum describes the direction of the timeline when in Running state.

See also setDirection().

Enumerator:
Backward 

The current time of the timeline decreases with time (i.e., moves from the end / duration and towards 0).

Forward 

The current time of the timeline increases with time (i.e., moves from 0 and towards the end / duration).

enum QtCore.QTimeLine.State

This enum describes the state of the timeline.

See also state() and stateChanged().

Enumerator:
NotRunning 

The timeline is not running. This is the initial state of QTimeLine, and the state QTimeLine reenters when finished. The current time, frame and value remain unchanged until either setCurrentTime() is called, or the timeline is started by calling start().

Paused 

The timeline is paused (i.e., temporarily suspended). Calling setPaused(false) will resume timeline activity.

Running 

The timeline is running. While control is in the event loop, QTimeLine will update its current time at regular intervals, emitting valueChanged() and frameChanged() when appropriate.

Constructor & Destructor Documentation

QtCore.QTimeLine.QTimeLine ( System.Type  dummy)
protected
QtCore.QTimeLine.QTimeLine ( int  duration = 1000,
QObject  parent = null 
)

Constructs a timeline with a duration of duration milliseconds. parent is passed to QObject's constructor. The default duration is 1000 milliseconds.

Member Function Documentation

override void QtCore.QTimeLine.CreateProxy ( )
virtual

Reimplemented from QtCore.QObject.

new int QtCore.QTimeLine.CurrentFrame ( )

Returns the frame corresponding to the current time.

See also currentTime(), frameForTime(), and setFrameRange().

new double QtCore.QTimeLine.CurrentValue ( )

Returns the value corresponding to the current time.

See also valueForTime() and currentFrame().

new void QtCore.QTimeLine.Dispose ( )
new int QtCore.QTimeLine.FrameForTime ( int  msec)

Returns the frame corresponding to the time msec. This value is calculated using a linear interpolation of the start and end frame, based on the value returned by valueForTime().

See also valueForTime() and setFrameRange().

new void QtCore.QTimeLine.OnFinished ( )
protected

This signal is emitted when QTimeLine finishes (i.e., reaches the end of its time line), and does not loop.

new void QtCore.QTimeLine.OnFrameChanged ( int  arg1)
protected

QTimeLine emits this signal at regular intervals when in Running state, but only if the current frame changes. frame is the current frame number.

See also QTimeLine::setFrameRange() and QTimeLine::updateInterval.

new void QtCore.QTimeLine.OnStateChanged ( QTimeLine.State  newState)
protected

This signal is emitted whenever QTimeLine's state changes. The new state is newState.

override void QtCore.QTimeLine.OnTimerEvent ( QTimerEvent @  event)
protected

Reimplemented from QObject::timerEvent().

new void QtCore.QTimeLine.OnValueChanged ( double  x)
protected

QTimeLine emits this signal at regular intervals when in Running state, but only if the current value changes. value is the current value. value is a number between 0.0 and 1.0

See also QTimeLine::setDuration(), QTimeLine::valueForTime(), and QTimeLine::updateInterval.

new void QtCore.QTimeLine.Resume ( )

Resumes the timeline from the current time. QTimeLine will reenter Running state, and once it enters the event loop, it will update its current time, frame and value at regular intervals.

In contrast to start(), this function does not restart the timeline before it resumes.

See also start(), updateInterval(), frameChanged(), and valueChanged().

new void QtCore.QTimeLine.SetFrameRange ( int  startFrame,
int  endFrame 
)

Sets the timeline's frame counter to start at startFrame, and end and endFrame. For each time value, QTimeLine will find the corresponding frame when you call currentFrame() or frameForTime() by interpolating, using the return value of valueForTime().

When in Running state, QTimeLine also emits the frameChanged() signal when the frame changes.

See also startFrame(), endFrame(), start(), and currentFrame().

new void QtCore.QTimeLine.SetPaused ( bool  paused)

If paused is true, the timeline is paused, causing QTimeLine to enter Paused state. No updates will be signaled until either start() or setPaused(false) is called. If paused is false, the timeline is resumed and continues where it left.

See also state() and start().

new void QtCore.QTimeLine.Start ( )

Starts the timeline. QTimeLine will enter Running state, and once it enters the event loop, it will update its current time, frame and value at regular intervals. The default interval is 40 ms (i.e., 25 times per second). You can change the update interval by calling setUpdateInterval().

The timeline will start from position 0, or the end if going backward. If you want to resume a stopped timeline without restarting, you can call resume() instead.

See also resume(), updateInterval(), frameChanged(), and valueChanged().

new QTimeLine.State QtCore.QTimeLine.state ( )

Returns the state of the timeline.

See also start(), setPaused(), and stop().

new void QtCore.QTimeLine.Stop ( )

Stops the timeline, causing QTimeLine to enter NotRunning state.

See also start().

new void QtCore.QTimeLine.ToggleDirection ( )

Toggles the direction of the timeline. If the direction was Forward, it becomes Backward, and vice verca.

See also setDirection().

static string QtCore.QTimeLine.Tr ( string  s,
string  c = null 
)
static
static string QtCore.QTimeLine.Tr ( string  s,
string  c,
int  n 
)
static
static string QtCore.QTimeLine.TrUtf8 ( string  s,
string  c = null 
)
static
static string QtCore.QTimeLine.TrUtf8 ( string  s,
string  c,
int  n 
)
static
virtual double QtCore.QTimeLine.ValueForTime ( int  msec)
virtual

Returns the timeline value for the time msec. The returned value, which varies depending on the curve shape, is always between 0 and 1. If msec is 0, the default implementation always returns 0.

Reimplement this function to provide a custom curve shape for your timeline.

See also CurveShape and frameForTime().

Property Documentation

new int QtCore.QTimeLine.CurrentTime
getset

This property holds the current time of the time line.

When QTimeLine is in Running state, this value is updated continuously as a function of the duration and direction of the timeline. Otherwise, it is value that was current when stop() was called last, or the value set by setCurrentTime().

By default, this property contains a value of 0.

new CurveShape QtCore.QTimeLine.curveShape
getset

This property holds the shape of the timeline curve.

The curve shape describes the relation between the time and value for the base implementation of valueForTime().

If you have reimplemented valueForTime(), this value is ignored.

By default, this property is set to EaseInOutCurve.

new Direction QtCore.QTimeLine.direction
getset

This property holds the direction of the timeline when QTimeLine is in Running state.

This direction indicates whether the time moves from 0 towards the timeline duration, or from the value of the duration and towards 0 after start() has been called.

By default, this property is set to Forward.

new int QtCore.QTimeLine.Duration
getset

This property holds the total duration of the timeline in milliseconds.

By default, this value is 1000 (i.e., 1 second), but you can change this by either passing a duration to QTimeLine's constructor, or by calling setDuration(). The duration must be larger than 0.

Note: Changing the duration does not cause the current time to be reset to zero or the new duration. You also need to call setCurrentTime() with the desired value.

new QEasingCurve QtCore.QTimeLine.EasingCurve
getset
new IQTimeLineSignals QtCore.QTimeLine.Emit
getprotected
new int QtCore.QTimeLine.EndFrame
getset

Returns the end frame, which is the frame corresponding to the end of the timeline (i.e., the frame for which the current value is 1).

Sets the end frame, which is the frame corresponding to the end of the timeline (i.e., the frame for which the current value is 1), to frame.

Slot QtCore.QTimeLine.Finished
addremove

This signal is emitted when QTimeLine finishes (i.e., reaches the end of its time line), and does not loop.

Slot<System.Int32> QtCore.QTimeLine.FrameChanged
addremove

QTimeLine emits this signal at regular intervals when in Running state, but only if the current frame changes. frame is the current frame number.

See also QTimeLine::setFrameRange() and QTimeLine::updateInterval.

new int QtCore.QTimeLine.LoopCount
getset

This property holds the number of times the timeline should loop before it's finished.

A loop count of of 0 means that the timeline will loop forever.

By default, this property contains a value of 1.

new int QtCore.QTimeLine.StartFrame
getset

Returns the start frame, which is the frame corresponding to the start of the timeline (i.e., the frame for which the current value is 0).

Sets the start frame, which is the frame corresponding to the start of the timeline (i.e., the frame for which the current value is 0), to frame.

Slot<QTimeLine.State> QtCore.QTimeLine.StateChanged
addremove

This signal is emitted whenever QTimeLine's state changes. The new state is newState.

new QMetaObject QtCore.QTimeLine.StaticMetaObject
staticget
new int QtCore.QTimeLine.UpdateInterval
getset

This property holds the time in milliseconds between each time QTimeLine updates its current time.

When updating the current time, QTimeLine will emit valueChanged() if the current value changed, and frameChanged() if the frame changed.

By default, the interval is 40 ms, which corresponds to a rate of 25 updates per second.

Slot<System.Double> QtCore.QTimeLine.ValueChanged
addremove

QTimeLine emits this signal at regular intervals when in Running state, but only if the current value changes. value is the current value. value is a number between 0.0 and 1.0

See also QTimeLine::setDuration(), QTimeLine::valueForTime(), and QTimeLine::updateInterval.