Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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QQuickTrailEmitter Class Reference

#include <qquicktrailemitter_p.h>

+ Inheritance diagram for QQuickTrailEmitter:
+ Collaboration diagram for QQuickTrailEmitter:

Public Types

enum  EmitSize { ParticleSize = -2 }
 
- Public Types inherited from QQuickParticleEmitter
enum  Lifetime { InfiniteLife = QQuickParticleSystem::maxLife }
 
- Public Types inherited from QQuickItem
enum  Flag {
  ItemClipsChildrenToShape = 0x01 , ItemIsFocusScope = 0x04 , ItemHasContents = 0x08 , ItemAcceptsDrops = 0x10 ,
  ItemIsViewport = 0x20 , ItemObservesViewport = 0x40
}
 \qmltype Item \instantiates QQuickItem \inherits QtObject \inqmlmodule QtQuick More...
 
enum  ItemChange {
  ItemChildAddedChange , ItemChildRemovedChange , ItemSceneChange , ItemVisibleHasChanged ,
  ItemParentHasChanged , ItemOpacityHasChanged , ItemActiveFocusHasChanged , ItemRotationHasChanged ,
  ItemAntialiasingHasChanged , ItemDevicePixelRatioHasChanged , ItemEnabledHasChanged
}
 Used in conjunction with QQuickItem::itemChange() to notify the item about certain types of changes. More...
 
enum  TransformOrigin {
  TopLeft , Top , TopRight , Left ,
  Center , Right , BottomLeft , Bottom ,
  BottomRight
}
 \variable QQuickItem::ItemChangeData::realValue The numeric value that has changed: \l {QQuickItem::opacity()}{opacity}, \l {QQuickItem::rotation()}{rotation}, or \l {QScreen::devicePixelRatio}{device pixel ratio}. More...
 

Public Slots

void setParticlesPerParticlePerSecond (int arg)
 
void setEmitterXVariation (qreal arg)
 
void setEmitterYVariation (qreal arg)
 
void setFollow (const QString &arg)
 
void setEmissionShape (QQuickParticleExtruder *arg)
 
- Public Slots inherited from QQuickParticleEmitter
void pulse (int milliseconds)
 
void burst (int num)
 
void burst (int num, qreal x, qreal y)
 
void setEnabled (bool arg)
 
void setParticlesPerSecond (qreal arg)
 
void setParticleDuration (int arg)
 
void setSystem (QQuickParticleSystem *arg)
 
void setGroup (const QString &arg)
 
void setParticleDurationVariation (int arg)
 
void setExtruder (QQuickParticleExtruder *arg)
 
void setParticleSize (qreal arg)
 
void setParticleEndSize (qreal arg)
 
void setParticleSizeVariation (qreal arg)
 
void setVelocity (QQuickDirection *arg)
 
void setAcceleration (QQuickDirection *arg)
 
void setMaxParticleCount (int arg)
 
void setStartTime (int arg)
 
- Public Slots inherited from QQuickItem
void update ()
 Schedules a call to updatePaintNode() for this item.
 
- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 

Signals

void emitFollowParticles (const QList< QQuickV4ParticleData > &particles, const QQuickV4ParticleData &followed)
 
void particlesPerParticlePerSecondChanged (int arg)
 
void emitterXVariationChanged (qreal arg)
 
void emitterYVariationChanged (qreal arg)
 
void followChanged (const QString &arg)
 
void emissionShapeChanged (QQuickParticleExtruder *arg)
 
- Signals inherited from QQuickParticleEmitter
void emitParticles (const QList< QQuickV4ParticleData > &particles)
 
void particlesPerSecondChanged (qreal)
 
void particleDurationChanged (int)
 
void enabledChanged (bool)
 
void systemChanged (QQuickParticleSystem *arg)
 
void groupChanged (const QString &arg)
 
void particleDurationVariationChanged (int arg)
 
void extruderChanged (QQuickParticleExtruder *arg)
 
void particleSizeChanged (qreal arg)
 
void particleEndSizeChanged (qreal arg)
 
void particleSizeVariationChanged (qreal arg)
 
void velocityChanged (QQuickDirection *arg)
 
void accelerationChanged (QQuickDirection *arg)
 
void maximumEmittedChanged (int arg)
 
void particleCountChanged ()
 
void velocityFromMovementChanged ()
 
void startTimeChanged (int arg)
 
- Signals inherited from QQuickItem
void childrenRectChanged (const QRectF &)
 
void baselineOffsetChanged (qreal)
 
void stateChanged (const QString &)
 
void focusChanged (bool)
 
void activeFocusChanged (bool)
 
Q_REVISION(6, 7) void focusPolicyChanged(Qt Q_REVISION (2, 1) void activeFocusOnTabChanged(bool)
 
void parentChanged (QQuickItem *)
 
void transformOriginChanged (TransformOrigin)
 
void smoothChanged (bool)
 
void antialiasingChanged (bool)
 
void clipChanged (bool)
 
 Q_REVISION (2, 1) void windowChanged(QQuickWindow *window)
 
void childrenChanged ()
 
void opacityChanged ()
 
void enabledChanged ()
 
void visibleChanged ()
 
void visibleChildrenChanged ()
 
void rotationChanged ()
 
void scaleChanged ()
 
void xChanged ()
 
void yChanged ()
 
void widthChanged ()
 
void heightChanged ()
 
void zChanged ()
 
void implicitWidthChanged ()
 
void implicitHeightChanged ()
 
 Q_REVISION (2, 11) void containmentMaskChanged()
 
 Q_REVISION (6, 0) void paletteChanged()
 
 Q_REVISION (6, 0) void paletteCreated()
 
- 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.
 

Public Member Functions

 QQuickTrailEmitter (QQuickItem *parent=nullptr)
 \qmltype TrailEmitter \instantiates QQuickTrailEmitter \inqmlmodule QtQuick.Particles \inherits QQuickParticleEmitter
 
void emitWindow (int timeStamp) override
 
void reset () override
 
int particlesPerParticlePerSecond () const
 
qreal emitterXVariation () const
 
qreal emitterYVariation () const
 
QString follow () const
 
QQuickParticleExtruderemissonShape () const
 
- Public Member Functions inherited from QQuickParticleEmitter
 QQuickParticleEmitter (QQuickItem *parent=nullptr)
 Emits logical particles.
 
virtual ~QQuickParticleEmitter ()
 
bool enabled () const
 
qreal particlesPerSecond () const
 
int particleDuration () const
 
QQuickParticleSystemsystem () const
 
QString group () const
 
QQuickParticleGroupData::ID groupId () const
 
int particleDurationVariation () const
 
qreal velocityFromMovement () const
 
void setVelocityFromMovement (qreal s)
 
void componentComplete () override
 \reimp Derived classes should call the base class method before adding their own actions to perform at componentComplete.
 
int particleCount () const
 
QQuickParticleExtruderextruder () const
 
qreal particleSize () const
 
qreal particleEndSize () const
 
qreal particleSizeVariation () const
 
QQuickDirectionvelocity () const
 
QQuickDirectionacceleration () const
 
int maxParticleCount () const
 
int startTime () const
 
void reclaculateGroupId () const
 
- Public Member Functions inherited from QQuickItem
 QQuickItem (QQuickItem *parent=nullptr)
 Constructs a QQuickItem with the given parent.
 
 ~QQuickItem () override
 Destroys the QQuickItem.
 
QQuickWindowwindow () const
 Returns the window in which this item is rendered.
 
QQuickItemparentItem () const
 
void setParentItem (QQuickItem *parent)
 
void stackBefore (const QQuickItem *)
 Moves the specified sibling item to the index before this item within the list of children.
 
void stackAfter (const QQuickItem *)
 Moves the specified sibling item to the index after this item within the list of children.
 
QRectF childrenRect ()
 \qmlpropertygroup QtQuick::Item::childrenRect \qmlproperty real QtQuick::Item::childrenRect.x \qmlproperty real QtQuick::Item::childrenRect.y \qmlproperty real QtQuick::Item::childrenRect.width \qmlproperty real QtQuick::Item::childrenRect.height \readonly
 
QList< QQuickItem * > childItems () const
 Returns the children of this item.
 
bool clip () const
 \qmlproperty bool QtQuick::Item::clip This property holds whether clipping is enabled.
 
void setClip (bool)
 
QString state () const
 \qmlproperty string QtQuick::Item::state
 
void setState (const QString &)
 
qreal baselineOffset () const
 \qmlproperty int QtQuick::Item::baselineOffset
 
void setBaselineOffset (qreal)
 
QQmlListProperty< QQuickTransformtransform ()
 
qreal x () const
 
qreal y () const
 
QPointF position () const
 
void setX (qreal)
 
void setY (qreal)
 
void setPosition (const QPointF &)
 
QBindable< qrealbindableX ()
 
QBindable< qrealbindableY ()
 
qreal width () const
 
void setWidth (qreal)
 
void resetWidth ()
 
void setImplicitWidth (qreal)
 
qreal implicitWidth () const
 Returns the width of the item that is implied by other properties that determine the content.
 
QBindable< qrealbindableWidth ()
 
qreal height () const
 
void setHeight (qreal)
 
void resetHeight ()
 
void setImplicitHeight (qreal)
 
qreal implicitHeight () const
 
QBindable< qrealbindableHeight ()
 
QSizeF size () const
 
void setSize (const QSizeF &size)
 
TransformOrigin transformOrigin () const
 
void setTransformOrigin (TransformOrigin)
 
QPointF transformOriginPoint () const
 
void setTransformOriginPoint (const QPointF &)
 
qreal z () const
 
void setZ (qreal)
 
qreal rotation () const
 
void setRotation (qreal)
 
qreal scale () const
 
void setScale (qreal)
 
qreal opacity () const
 
void setOpacity (qreal)
 
bool isVisible () const
 
void setVisible (bool)
 
bool isEnabled () const
 
void setEnabled (bool)
 
bool smooth () const
 
void setSmooth (bool)
 
bool activeFocusOnTab () const
 \qmlproperty bool QtQuick::Item::activeFocusOnTab
 
void setActiveFocusOnTab (bool)
 
bool antialiasing () const
 
void setAntialiasing (bool)
 
void resetAntialiasing ()
 
Flags flags () const
 Returns the item flags for this item.
 
void setFlag (Flag flag, bool enabled=true)
 Enables the specified flag for this item if enabled is true; if enabled is false, the flag is disabled.
 
void setFlags (Flags flags)
 Enables the specified flags for this item.
 
virtual QRectF boundingRect () const
 Returns the extents of the item in its own coordinate system: a rectangle from {0, 0} to \l width() and \l height().
 
virtual QRectF clipRect () const
 Returns the rectangular area within this item that is currently visible in \l viewportItem(), if there is a viewport and the \l ItemObservesViewport flag is set; otherwise, the extents of this item in its own coordinate system: a rectangle from {0, 0} to \l width() and \l height().
 
QQuickItemviewportItem () const
 If the \l ItemObservesViewport flag is set, returns the nearest parent with the \l ItemIsViewport flag.
 
bool hasActiveFocus () const
 
bool hasFocus () const
 
void setFocus (bool)
 
void setFocus (bool focus, Qt::FocusReason reason)
 
bool isFocusScope () const
 Returns true if this item is a focus scope, and false otherwise.
 
QQuickItemscopedFocusItem () const
 If this item is a focus scope, this returns the item in its focus chain that currently has focus.
 
Qt::FocusPolicy focusPolicy () const
 
void setFocusPolicy (Qt::FocusPolicy policy)
 Sets the focus policy of this item to policy.
 
bool isAncestorOf (const QQuickItem *child) const
 Returns true if this item is an ancestor of child (i.e., if this item is child's parent, or one of child's parent's ancestors).
 
Qt::MouseButtons acceptedMouseButtons () const
 Returns the mouse buttons accepted by this item.
 
void setAcceptedMouseButtons (Qt::MouseButtons buttons)
 Sets the mouse buttons accepted by this item to buttons.
 
bool acceptHoverEvents () const
 Returns whether hover events are accepted by this item.
 
void setAcceptHoverEvents (bool enabled)
 If enabled is true, this sets the item to accept hover events; otherwise, hover events are not accepted by this item.
 
bool acceptTouchEvents () const
 Returns whether touch events are accepted by this item.
 
void setAcceptTouchEvents (bool accept)
 If enabled is true, this sets the item to accept touch events; otherwise, touch events are not accepted by this item.
 
bool isUnderMouse () const
 
void grabMouse ()
 
void ungrabMouse ()
 
bool keepMouseGrab () const
 Returns whether mouse input should exclusively remain with this item.
 
void setKeepMouseGrab (bool)
 Sets whether the mouse input should remain exclusively with this item.
 
bool filtersChildMouseEvents () const
 Returns whether pointer events intended for this item's children should be filtered through this item.
 
void setFiltersChildMouseEvents (bool filter)
 Sets whether pointer events intended for this item's children should be filtered through this item.
 
void grabTouchPoints (const QList< int > &ids)
 
void ungrabTouchPoints ()
 
bool keepTouchGrab () const
 Returns whether the touch points grabbed by this item should exclusively remain with this item.
 
void setKeepTouchGrab (bool)
 Sets whether the touch points grabbed by this item should remain exclusively with this item.
 
 Q_REVISION (2, 4) Q_INVOKABLE bool grabToImage(const QJSValue &callback
 
QSharedPointer< QQuickItemGrabResultgrabToImage (const QSize &targetSize=QSize())
 Grabs the item into an in-memory image.
 
virtual Q_INVOKABLE bool contains (const QPointF &point) const
 \qmlmethod bool QtQuick::Item::contains(point point)
 
QObjectcontainmentMask () const
 
void setContainmentMask (QObject *mask)
 
QTransform itemTransform (QQuickItem *, bool *) const
 \qmlmethod point QtQuick::Item::mapFromItem(Item item, real x, real y) \qmlmethod point QtQuick::Item::mapFromItem(Item item, point p) \qmlmethod rect QtQuick::Item::mapFromItem(Item item, real x, real y, real width, real height) \qmlmethod rect QtQuick::Item::mapFromItem(Item item, rect r)
 
QPointF mapToScene (const QPointF &point) const
 Maps the given point in this item's coordinate system to the equivalent point within the scene's coordinate system, and returns the mapped coordinate.
 
QRectF mapRectToItem (const QQuickItem *item, const QRectF &rect) const
 Maps the given rect in this item's coordinate system to the equivalent rectangular area within item's coordinate system, and returns the mapped rectangle value.
 
QRectF mapRectToScene (const QRectF &rect) const
 Maps the given rect in this item's coordinate system to the equivalent rectangular area within the scene's coordinate system, and returns the mapped rectangle value.
 
QPointF mapFromScene (const QPointF &point) const
 Maps the given point in the scene's coordinate system to the equivalent point within this item's coordinate system, and returns the mapped coordinate.
 
QRectF mapRectFromItem (const QQuickItem *item, const QRectF &rect) const
 Maps the given rect in item's coordinate system to the equivalent rectangular area within this item's coordinate system, and returns the mapped rectangle value.
 
QRectF mapRectFromScene (const QRectF &rect) const
 Maps the given rect in the scene's coordinate system to the equivalent rectangular area within this item's coordinate system, and returns the mapped rectangle value.
 
void polish ()
 Schedules a polish event for this item.
 
Q_INVOKABLE QPointF mapFromItem (const QQuickItem *item, const QPointF &point) const
 Maps the given point in item's coordinate system to the equivalent point within this item's coordinate system, and returns the mapped coordinate.
 
Q_INVOKABLE QPointF mapFromItem (const QQuickItem *item, qreal x, qreal y)
 
Q_INVOKABLE QRectF mapFromItem (const QQuickItem *item, const QRectF &rect) const
 
Q_INVOKABLE QRectF mapFromItem (const QQuickItem *item, qreal x, qreal y, qreal width, qreal height) const
 
Q_INVOKABLE QPointF mapToItem (const QQuickItem *item, const QPointF &point) const
 Maps the given point in this item's coordinate system to the equivalent point within item's coordinate system, and returns the mapped coordinate.
 
Q_INVOKABLE QPointF mapToItem (const QQuickItem *item, qreal x, qreal y)
 
Q_INVOKABLE QRectF mapToItem (const QQuickItem *item, const QRectF &rect) const
 
Q_INVOKABLE QRectF mapToItem (const QQuickItem *item, qreal x, qreal y, qreal width, qreal height) const
 
 Q_REVISION (2, 7) Q_INVOKABLE QPointF mapFromGlobal(qreal x
 
 Q_REVISION (2, 7) Q_INVOKABLE QPointF mapFromGlobal(const QPointF &point) const
 
 Q_REVISION (2, 7) Q_INVOKABLE QPointF mapToGlobal(qreal x
 
 Q_REVISION (2, 7) Q_INVOKABLE QPointF mapToGlobal(const QPointF &point) const
 
Q_INVOKABLE void forceActiveFocus ()
 \qmlmethod point QtQuick::Item::mapToItem(Item item, real x, real y) \qmlmethod point QtQuick::Item::mapToItem(Item item, point p) \qmlmethod rect QtQuick::Item::mapToItem(Item item, real x, real y, real width, real height) \qmlmethod rect QtQuick::Item::mapToItem(Item item, rect r)
 
Q_INVOKABLE void forceActiveFocus (Qt::FocusReason reason)
 \qmlmethod QtQuick::Item::forceActiveFocus(Qt::FocusReason reason) This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Forces active focus on the item with the given reason.
 
 Q_REVISION (2, 1) Q_INVOKABLE QQuickItem *nextItemInFocusChain(bool forward
 
Q_INVOKABLE QQuickItemchildAt (qreal x, qreal y) const
 \qmlmethod QtQuick::Item::childAt(real x, real y)
 
 Q_REVISION (6, 3) Q_INVOKABLE void ensurePolished()
 
 Q_REVISION (6, 3) Q_INVOKABLE void dumpItemTree() const
 
virtual bool isTextureProvider () const
 Returns true if this item is a texture provider.
 
virtual QSGTextureProvidertextureProvider () const
 Returns the texture provider for an item.
 
- 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 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< QStringbindableObjectName ()
 
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).
 
QThreadthread () 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 >
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 >
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 QObjectListchildren () 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< QByteArraydynamicPropertyNames () const
 
QBindingStoragebindingStorage ()
 
const QBindingStoragebindingStorage () const
 
QObjectparent () 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.
 
- Public Member Functions inherited from QQmlParserStatus
 QQmlParserStatus ()
 
virtual ~QQmlParserStatus ()
 

Properties

QString follow
 
int emitRatePerParticle
 
QQuickParticleExtruderemitShape
 
qreal emitHeight
 
qreal emitWidth
 
- Properties inherited from QQuickParticleEmitter
QQuickParticleSystemsystem
 
QString group
 
QQuickParticleExtrudershape
 
bool enabled
 
int startTime
 
qreal emitRate
 
int lifeSpan
 
int lifeSpanVariation
 
int maximumEmitted
 
qreal size
 
qreal endSize
 
qreal sizeVariation
 
QQuickDirectionvelocity
 
QQuickDirectionacceleration
 
qreal velocityFromMovement
 
- Properties inherited from QQuickItem
QQuickItemparent
 \qmlproperty Item QtQuick::Item::parent This property holds the visual parent of the item.
 
qreal x
 \qmlproperty real QtQuick::Item::x \qmlproperty real QtQuick::Item::y \qmlproperty real QtQuick::Item::width \qmlproperty real QtQuick::Item::height
 
qreal y
 Defines the item's y position relative to its parent.
 
qreal z
 \qmlproperty real QtQuick::Item::z
 
qreal width
 This property holds the width of this item.
 
qreal height
 This property holds the height of this item.
 
qreal opacity
 \qmlproperty real QtQuick::Item::opacity
 
bool enabled
 \qmlproperty bool QtQuick::Item::enabled
 
bool visible
 \qmlproperty bool QtQuick::Item::visible
 
Qt::FocusPolicy focusPolicy
 \qmlproperty enumeration QtQuick::Item::focusPolicy
 
qreal rotation
 \qmlproperty real QtQuick::Item::rotation This property holds the rotation of the item in degrees clockwise around its transformOrigin.
 
qreal scale
 \qmlproperty real QtQuick::Item::scale This property holds the scale factor for this item.
 
TransformOrigin transformOrigin
 \qmlproperty enumeration QtQuick::Item::transformOrigin This property holds the origin point around which scale and rotation transform.
 
QPointF transformOriginPoint
 
QQmlListProperty< QQuickTransformtransform
 \qmlproperty list<Transform> QtQuick::Item::transform This property holds the list of transformations to apply.
 
bool smooth
 \qmlproperty bool QtQuick::Item::smooth
 
bool antialiasing
 \qmlproperty bool QtQuick::Item::antialiasing
 
qreal implicitWidth
 
qreal implicitHeight
 
QObjectcontainmentMask
 \qmlproperty QObject* QtQuick::Item::containmentMask
 
- Properties inherited from QObject
QString objectName
 the name of this object
 

Additional Inherited Members

- 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)
 
- Public Attributes inherited from QQuickItem
const QSizetargetSize = QSize())
 
qreal y const
 
- Protected Member Functions inherited from QQuickParticleEmitter
QQuickParticleExtrudereffectiveExtruder ()
 
bool isEmitConnected ()
 
- Protected Member Functions inherited from QQuickItem
bool event (QEvent *) override
 \reimp
 
bool isComponentComplete () const
 Returns true if construction of the QML component is complete; otherwise returns false.
 
virtual void itemChange (ItemChange, const ItemChangeData &)
 Called when change occurs for this item.
 
virtual void geometryChange (const QRectF &newGeometry, const QRectF &oldGeometry)
 
bool widthValid () const
 Returns whether the width property has been set explicitly.
 
bool heightValid () const
 Returns whether the height property has been set explicitly.
 
void setImplicitSize (qreal, qreal)
 
void classBegin () override
 \reimp Derived classes should call the base class method before adding their own action to perform at classBegin.
 
virtual void keyPressEvent (QKeyEvent *event)
 This event handler can be reimplemented in a subclass to receive key press events for an item.
 
virtual void keyReleaseEvent (QKeyEvent *event)
 This event handler can be reimplemented in a subclass to receive key release events for an item.
 
virtual void focusInEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive focus-in events for an item.
 
virtual void focusOutEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive focus-out events for an item.
 
virtual void mousePressEvent (QMouseEvent *event)
 This event handler can be reimplemented in a subclass to receive mouse press events for an item.
 
virtual void mouseMoveEvent (QMouseEvent *event)
 This event handler can be reimplemented in a subclass to receive mouse move events for an item.
 
virtual void mouseReleaseEvent (QMouseEvent *event)
 This event handler can be reimplemented in a subclass to receive mouse release events for an item.
 
virtual void mouseDoubleClickEvent (QMouseEvent *event)
 This event handler can be reimplemented in a subclass to receive mouse double-click events for an item.
 
virtual void mouseUngrabEvent ()
 This event handler can be reimplemented in a subclass to be notified when a mouse ungrab event has occurred on this item.
 
virtual void touchUngrabEvent ()
 This event handler can be reimplemented in a subclass to be notified when a touch ungrab event has occurred on this item.
 
virtual void touchEvent (QTouchEvent *event)
 This event handler can be reimplemented in a subclass to receive touch events for an item.
 
virtual void hoverEnterEvent (QHoverEvent *event)
 This event handler can be reimplemented in a subclass to receive hover-enter events for an item.
 
virtual void hoverMoveEvent (QHoverEvent *event)
 This event handler can be reimplemented in a subclass to receive hover-move events for an item.
 
virtual void hoverLeaveEvent (QHoverEvent *event)
 This event handler can be reimplemented in a subclass to receive hover-leave events for an item.
 
virtual bool childMouseEventFilter (QQuickItem *, QEvent *)
 Reimplement this method to filter the pointer events that are received by this item's children.
 
virtual QSGNodeupdatePaintNode (QSGNode *, UpdatePaintNodeData *)
 Called on the render thread when it is time to sync the state of the item with the scene graph.
 
virtual void releaseResources ()
 This function is called when an item should release graphics resources which are not already managed by the nodes returned from QQuickItem::updatePaintNode().
 
virtual void updatePolish ()
 This function should perform any layout as required for this item.
 
 QQuickItem (QQuickItemPrivate &dd, QQuickItem *parent=nullptr)
 
- Protected Member Functions inherited from QObject
QObjectsender () 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 QQuickParticleEmitter
qreal m_particlesPerSecond
 
int m_particleDuration
 
int m_particleDurationVariation
 
bool m_enabled
 
QQuickParticleSystemm_system
 
QQuickParticleExtruderm_extruder
 
QQuickParticleExtruderm_defaultExtruder
 
QQuickDirectionm_velocity
 
QQuickDirectionm_acceleration
 
qreal m_particleSize
 
qreal m_particleEndSize
 
qreal m_particleSizeVariation
 
int m_startTime
 
bool m_overwrite
 
int m_pulseLeft
 
QList< QPair< int, QPointF > > m_burstQueue
 
int m_maxParticleCount
 
qreal m_velocity_from_movement
 
int m_emitCap
 
bool m_reset_last
 
qreal m_last_timestamp
 
qreal m_last_emission
 
QPointF m_last_emitter
 
QPointF m_last_last_emitter
 
- Protected Attributes inherited from QObject
QScopedPointer< QObjectDatad_ptr
 

Detailed Description

Definition at line 22 of file qquicktrailemitter_p.h.

Member Enumeration Documentation

◆ EmitSize

Enumerator
ParticleSize 

Definition at line 35 of file qquicktrailemitter_p.h.

Constructor & Destructor Documentation

◆ QQuickTrailEmitter()

QT_BEGIN_NAMESPACE QQuickTrailEmitter::QQuickTrailEmitter ( QQuickItem * parent = nullptr)
explicit

\qmltype TrailEmitter \instantiates QQuickTrailEmitter \inqmlmodule QtQuick.Particles \inherits QQuickParticleEmitter

Emits logical particles from other logical particles.

This element emits logical particles into the ParticleSystem, with the starting positions based on those of other logical particles.

Definition at line 28 of file qquicktrailemitter.cpp.

References QObject::connect(), followChanged(), QQuickParticleEmitter::particleDurationChanged(), and particlesPerParticlePerSecondChanged().

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Member Function Documentation

◆ emissionShapeChanged

void QQuickTrailEmitter::emissionShapeChanged ( QQuickParticleExtruder * arg)
signal

◆ emissonShape()

QQuickParticleExtruder * QQuickTrailEmitter::emissonShape ( ) const
inline

Definition at line 63 of file qquicktrailemitter_p.h.

◆ emitFollowParticles

void QQuickTrailEmitter::emitFollowParticles ( const QList< QQuickV4ParticleData > & particles,
const QQuickV4ParticleData & followed )
signal

Referenced by emitWindow().

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◆ emitterXVariation()

qreal QQuickTrailEmitter::emitterXVariation ( ) const
inline

Definition at line 48 of file qquicktrailemitter_p.h.

◆ emitterXVariationChanged

void QQuickTrailEmitter::emitterXVariationChanged ( qreal arg)
signal

◆ emitterYVariation()

qreal QQuickTrailEmitter::emitterYVariation ( ) const
inline

Definition at line 53 of file qquicktrailemitter_p.h.

◆ emitterYVariationChanged

void QQuickTrailEmitter::emitterYVariationChanged ( qreal arg)
signal

◆ emitWindow()

void QQuickTrailEmitter::emitWindow ( int timeStamp)
overridevirtual

Reimplemented from QQuickParticleEmitter.

Definition at line 123 of file qquicktrailemitter.cpp.

References QQuickParticleData::ax, QQuickParticleData::ay, QQuickItem::contains(), d, QVarLengthArray< T, Prealloc >::data(), QQuickParticleEmitter::effectiveExtruder(), emit, emitFollowParticles(), QQuickParticleSystem::emitParticle(), QQuickParticleEmitter::emitParticles(), QQuickParticleEmitter::endSize, QQuickParticleData::endSize, QList< T >::first(), QRandomGenerator::global(), QQuickParticleSystem::groupData, QQuickParticleEmitter::groupId(), QQuickParticleSystem::groupIds, QQuickItem::height, i, QQuickParticleEmitter::isEmitConnected(), QList< T >::isEmpty(), QQuickParticleData::lifeSpan, QQuickParticleEmitter::m_acceleration, QQuickParticleEmitter::m_burstQueue, QQuickParticleEmitter::m_enabled, QQuickParticleEmitter::m_overwrite, QQuickParticleEmitter::m_particleDuration, QQuickParticleEmitter::m_particleDurationVariation, QQuickParticleEmitter::m_particleEndSize, QQuickParticleEmitter::m_particleSize, QQuickParticleEmitter::m_particleSizeVariation, QQuickParticleEmitter::m_particlesPerSecond, QQuickParticleEmitter::m_pulseLeft, QQuickParticleEmitter::m_system, QQuickParticleEmitter::m_velocity, QQuickParticleEmitter::m_velocity_from_movement, QQuickItem::mapFromItem(), QQuickParticleSystem::newDatum(), QList< T >::pop_front(), qMax(), QQuickDirection::sample(), QQuickParticleGroupData::size(), QVLABaseBase::size(), QQuickParticleData::size, QQuickParticleEmitter::sizeVariation, QQuickParticleData::t, time, QQuickParticleEmitter::velocity, QQuickParticleData::vx, QQuickParticleData::vy, QQuickItem::width, QPointF::x(), QQuickParticleData::x, QPointF::y(), and QQuickParticleData::y.

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◆ follow()

QString QQuickTrailEmitter::follow ( ) const
inline

Definition at line 58 of file qquicktrailemitter_p.h.

◆ followChanged

void QQuickTrailEmitter::followChanged ( const QString & arg)
signal

Referenced by QQuickTrailEmitter().

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◆ particlesPerParticlePerSecond()

int QQuickTrailEmitter::particlesPerParticlePerSecond ( ) const
inline

Definition at line 43 of file qquicktrailemitter_p.h.

◆ particlesPerParticlePerSecondChanged

void QQuickTrailEmitter::particlesPerParticlePerSecondChanged ( int arg)
signal

Referenced by QQuickTrailEmitter().

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◆ reset()

void QQuickTrailEmitter::reset ( )
overridevirtual

Reimplemented from QQuickParticleEmitter.

Definition at line 118 of file qquicktrailemitter.cpp.

◆ setEmissionShape

void QQuickTrailEmitter::setEmissionShape ( QQuickParticleExtruder * arg)
inlineslot

Definition at line 116 of file qquicktrailemitter_p.h.

References arg, and Q_EMIT.

◆ setEmitterXVariation

void QQuickTrailEmitter::setEmitterXVariation ( qreal arg)
inlineslot

Definition at line 92 of file qquicktrailemitter_p.h.

References arg, and Q_EMIT.

◆ setEmitterYVariation

void QQuickTrailEmitter::setEmitterYVariation ( qreal arg)
inlineslot

Definition at line 100 of file qquicktrailemitter_p.h.

References arg, and Q_EMIT.

◆ setFollow

void QQuickTrailEmitter::setFollow ( const QString & arg)
inlineslot

Definition at line 108 of file qquicktrailemitter_p.h.

References arg, and Q_EMIT.

◆ setParticlesPerParticlePerSecond

void QQuickTrailEmitter::setParticlesPerParticlePerSecond ( int arg)
inlineslot

Definition at line 85 of file qquicktrailemitter_p.h.

References arg, and Q_EMIT.

Property Documentation

◆ emitHeight

qreal QQuickTrailEmitter::emitHeight
readwrite

Definition at line 29 of file qquicktrailemitter_p.h.

◆ emitRatePerParticle

int QQuickTrailEmitter::emitRatePerParticle
readwrite

Definition at line 26 of file qquicktrailemitter_p.h.

◆ emitShape

QQuickParticleExtruder* QQuickTrailEmitter::emitShape
readwrite

Definition at line 28 of file qquicktrailemitter_p.h.

◆ emitWidth

qreal QQuickTrailEmitter::emitWidth
readwrite

Definition at line 30 of file qquicktrailemitter_p.h.

◆ follow

QString QQuickTrailEmitter::follow
readwrite

Definition at line 25 of file qquicktrailemitter_p.h.


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