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| | QQuickParticleAffector (QQuickItem *parent=nullptr) |
| | Applies alterations to the attributes of logical particles at any point in their lifetime.
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| virtual void | affectSystem (qreal dt) |
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| virtual void | reset (QQuickParticleData *) |
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| QQuickParticleSystem * | system () const |
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| QStringList | groups () const |
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| bool | enabled () const |
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| bool | onceOff () const |
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| QQuickParticleExtruder * | shape () const |
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| QStringList | whenCollidingWith () const |
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| | QQuickItem (QQuickItem *parent=nullptr) |
| | Constructs a QQuickItem with the given parent.
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| |
| | ~QQuickItem () override |
| | Destroys the QQuickItem.
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| QQuickWindow * | window () const |
| | Returns the window in which this item is rendered.
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| QQuickItem * | parentItem () const |
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| void | setParentItem (QQuickItem *parent) |
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| void | stackBefore (const QQuickItem *) |
| | Moves the specified sibling item to the index before this item within the list of children.
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| void | stackAfter (const QQuickItem *) |
| | Moves the specified sibling item to the index after this item within the list of children.
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| 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
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| QList< QQuickItem * > | childItems () const |
| | Returns the children of this item.
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| bool | clip () const |
| | \qmlproperty bool QtQuick::Item::clip This property holds whether clipping is enabled.
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| void | setClip (bool) |
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| QString | state () const |
| | \qmlproperty string QtQuick::Item::state
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| void | setState (const QString &) |
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| qreal | baselineOffset () const |
| | \qmlproperty int QtQuick::Item::baselineOffset
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| void | setBaselineOffset (qreal) |
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| QQmlListProperty< QQuickTransform > | transform () |
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| qreal | x () const |
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| qreal | y () const |
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| QPointF | position () const |
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| void | setX (qreal) |
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| void | setY (qreal) |
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| void | setPosition (const QPointF &) |
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| QBindable< qreal > | bindableX () |
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| QBindable< qreal > | bindableY () |
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| qreal | width () const |
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| void | setWidth (qreal) |
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| void | resetWidth () |
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| void | setImplicitWidth (qreal) |
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| qreal | implicitWidth () const |
| | Returns the width of the item that is implied by other properties that determine the content.
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| QBindable< qreal > | bindableWidth () |
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| qreal | height () const |
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| void | setHeight (qreal) |
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| void | resetHeight () |
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| void | setImplicitHeight (qreal) |
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| qreal | implicitHeight () const |
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| QBindable< qreal > | bindableHeight () |
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| QSizeF | size () const |
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| void | setSize (const QSizeF &size) |
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| TransformOrigin | transformOrigin () const |
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| void | setTransformOrigin (TransformOrigin) |
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| QPointF | transformOriginPoint () const |
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| void | setTransformOriginPoint (const QPointF &) |
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| qreal | z () const |
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| void | setZ (qreal) |
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| qreal | rotation () const |
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| void | setRotation (qreal) |
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| qreal | scale () const |
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| void | setScale (qreal) |
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| qreal | opacity () const |
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| void | setOpacity (qreal) |
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| bool | isVisible () const |
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| void | setVisible (bool) |
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| bool | isEnabled () const |
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| void | setEnabled (bool) |
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| bool | smooth () const |
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| void | setSmooth (bool) |
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| bool | activeFocusOnTab () const |
| | \qmlproperty bool QtQuick::Item::activeFocusOnTab
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| void | setActiveFocusOnTab (bool) |
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| bool | antialiasing () const |
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| void | setAntialiasing (bool) |
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| void | resetAntialiasing () |
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| Flags | flags () const |
| | Returns the item flags for this item.
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| 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.
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| void | setFlags (Flags flags) |
| | Enables the specified flags for this item.
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| virtual QRectF | boundingRect () const |
| | Returns the extents of the item in its own coordinate system: a rectangle from
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| 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
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| QQuickItem * | viewportItem () const |
| | If the \l ItemObservesViewport flag is set, returns the nearest parent with the \l ItemIsViewport flag.
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| bool | hasActiveFocus () const |
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| bool | hasFocus () const |
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| void | setFocus (bool) |
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| void | setFocus (bool focus, Qt::FocusReason reason) |
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| bool | isFocusScope () const |
| | Returns true if this item is a focus scope, and false otherwise.
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| QQuickItem * | scopedFocusItem () const |
| | If this item is a focus scope, this returns the item in its focus chain that currently has focus.
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| Qt::FocusPolicy | focusPolicy () const |
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| void | setFocusPolicy (Qt::FocusPolicy policy) |
| | Sets the focus policy of this item to policy.
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| 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).
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| Qt::MouseButtons | acceptedMouseButtons () const |
| | Returns the mouse buttons accepted by this item.
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| void | setAcceptedMouseButtons (Qt::MouseButtons buttons) |
| | Sets the mouse buttons accepted by this item to buttons.
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| bool | acceptHoverEvents () const |
| | Returns whether hover events are accepted by this item.
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| 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.
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| bool | acceptTouchEvents () const |
| | Returns whether touch events are accepted by this item.
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| 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.
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| bool | isUnderMouse () const |
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| void | grabMouse () |
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| void | ungrabMouse () |
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| bool | keepMouseGrab () const |
| | Returns whether mouse input should exclusively remain with this item.
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| void | setKeepMouseGrab (bool) |
| | Sets whether the mouse input should remain exclusively with this item.
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| bool | filtersChildMouseEvents () const |
| | Returns whether pointer events intended for this item's children should be filtered through this item.
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| void | setFiltersChildMouseEvents (bool filter) |
| | Sets whether pointer events intended for this item's children should be filtered through this item.
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| void | grabTouchPoints (const QList< int > &ids) |
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| void | ungrabTouchPoints () |
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| bool | keepTouchGrab () const |
| | Returns whether the touch points grabbed by this item should exclusively remain with this item.
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| void | setKeepTouchGrab (bool) |
| | Sets whether the touch points grabbed by this item should remain exclusively with this item.
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| | Q_REVISION (2, 4) Q_INVOKABLE bool grabToImage(const QJSValue &callback |
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| QSharedPointer< QQuickItemGrabResult > | grabToImage (const QSize &targetSize=QSize()) |
| | Grabs the item into an in-memory image.
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| virtual Q_INVOKABLE bool | contains (const QPointF &point) const |
| | \qmlmethod bool QtQuick::Item::contains(point point)
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| QObject * | containmentMask () const |
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| void | setContainmentMask (QObject *mask) |
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| 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)
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| 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.
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| 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.
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| 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.
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| 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.
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| 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.
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| 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.
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| void | polish () |
| | Schedules a polish event for this item.
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| 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.
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| Q_INVOKABLE QPointF | mapFromItem (const QQuickItem *item, qreal x, qreal y) |
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| Q_INVOKABLE QRectF | mapFromItem (const QQuickItem *item, const QRectF &rect) const |
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| Q_INVOKABLE QRectF | mapFromItem (const QQuickItem *item, qreal x, qreal y, qreal width, qreal height) const |
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| 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.
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| Q_INVOKABLE QPointF | mapToItem (const QQuickItem *item, qreal x, qreal y) |
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| Q_INVOKABLE QRectF | mapToItem (const QQuickItem *item, const QRectF &rect) const |
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| Q_INVOKABLE QRectF | mapToItem (const QQuickItem *item, qreal x, qreal y, qreal width, qreal height) const |
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| | Q_REVISION (2, 7) Q_INVOKABLE QPointF mapFromGlobal(qreal x |
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| | Q_REVISION (2, 7) Q_INVOKABLE QPointF mapFromGlobal(const QPointF &point) const |
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| | Q_REVISION (2, 7) Q_INVOKABLE QPointF mapToGlobal(qreal x |
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| | Q_REVISION (2, 7) Q_INVOKABLE QPointF mapToGlobal(const QPointF &point) const |
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| 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)
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| 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.
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| | Q_REVISION (2, 1) Q_INVOKABLE QQuickItem *nextItemInFocusChain(bool forward |
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| Q_INVOKABLE QQuickItem * | childAt (qreal x, qreal y) const |
| | \qmlmethod QtQuick::Item::childAt(real x, real y)
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| | Q_REVISION (6, 3) Q_INVOKABLE void ensurePolished() |
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| | Q_REVISION (6, 3) Q_INVOKABLE void dumpItemTree() const |
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| virtual bool | isTextureProvider () const |
| | Returns true if this item is a texture provider.
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| virtual QSGTextureProvider * | textureProvider () const |
| | Returns the texture provider for an item.
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| Q_INVOKABLE | QObject (QObject *parent=nullptr) |
| | Constructs an object with parent object parent.
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| virtual | ~QObject () |
| | Destroys the object, deleting all its child objects.
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| virtual bool | eventFilter (QObject *watched, QEvent *event) |
| | Filters events if this object has been installed as an event filter for the watched object.
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| QString | objectName () const |
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| Q_WEAK_OVERLOAD void | setObjectName (const QString &name) |
| | Sets the object's name to name.
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| 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.
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| QBindable< QString > | bindableObjectName () |
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| bool | isWidgetType () const |
| | Returns true if the object is a widget; otherwise returns false.
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| bool | isWindowType () const |
| | Returns true if the object is a window; otherwise returns false.
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| bool | isQuickItemType () const |
| | Returns true if the object is a QQuickItem; otherwise returns false.
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| bool | signalsBlocked () const noexcept |
| | Returns true if signals are blocked; otherwise returns false.
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| 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).
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| QThread * | thread () const |
| | Returns the thread in which the object lives.
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| bool | moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL) |
| | Changes the thread affinity for this object and its children and returns true on success.
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| 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.
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| int | startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer) |
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| void | killTimer (int id) |
| | Kills the timer with timer identifier, id.
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| void | killTimer (Qt::TimerId id) |
| |
| template<typename T > |
| T | findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| | Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
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| |
| 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.
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| |
| template<typename T > |
| T | findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const |
| | This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
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| |
| 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.
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| const QObjectList & | children () const |
| | Returns a list of child objects.
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| void | setParent (QObject *parent) |
| | Makes the object a child of parent.
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| void | installEventFilter (QObject *filterObj) |
| | Installs an event filter filterObj on this object.
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| void | removeEventFilter (QObject *obj) |
| | Removes an event filter object obj from this object.
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| QMetaObject::Connection | connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const |
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| bool | disconnect (const char *signal=nullptr, const QObject *receiver=nullptr, const char *member=nullptr) const |
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| bool | disconnect (const QObject *receiver, const char *member=nullptr) const |
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| void | dumpObjectTree () const |
| | Dumps a tree of children to the debug output.
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| void | dumpObjectInfo () const |
| | Dumps information about signal connections, etc.
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| |
| bool | setProperty (const char *name, const QVariant &value) |
| | Sets the value of the object's name property to value.
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| bool | setProperty (const char *name, QVariant &&value) |
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| QVariant | property (const char *name) const |
| | Returns the value of the object's name property.
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| |
| QList< QByteArray > | dynamicPropertyNames () const |
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| QBindingStorage * | bindingStorage () |
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| const QBindingStorage * | bindingStorage () const |
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| QObject * | parent () const |
| | Returns a pointer to the parent object.
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| |
| 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.
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| |
| | QQmlParserStatus () |
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| virtual | ~QQmlParserStatus () |
| |
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| enum | Flag {
ItemClipsChildrenToShape = 0x01
, ItemIsFocusScope = 0x04
, ItemHasContents = 0x08
, ItemAcceptsDrops = 0x10
,
ItemIsViewport = 0x20
, ItemObservesViewport = 0x40
} |
| | \qmltype Item \nativetype QQuickItem \inherits QtObject \inqmlmodule QtQuick More...
|
| |
| enum | ItemChange {
ItemChildAddedChange
, ItemChildRemovedChange
, ItemSceneChange
, ItemVisibleHasChanged
,
ItemParentHasChanged
, ItemOpacityHasChanged
, ItemActiveFocusHasChanged
, ItemRotationHasChanged
,
ItemAntialiasingHasChanged
, ItemDevicePixelRatioHasChanged
, ItemEnabledHasChanged
, ItemScaleHasChanged
,
ItemTransformHasChanged
} |
| | 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 {QQuickItem::scale()}{scale}, or \l {QScreen::devicePixelRatio}{device pixel ratio}. More...
|
| |
| 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) |
| |
| const QSize & | targetSize = QSize()) |
| |
| qreal y | const |
| |
| template< class T > T | qobject_cast (const QObject *object) |
| | Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
|
| |
| template< typename T > T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| |
| template< typename T > QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| |
| | QObjectList |
| | \macro Q_CLASSINFO(Name, Value)
|
| |
Applies alterations to the attributes of logical particles at any point in their lifetime.
\qmltype Affector
! \nativetype QQuickParticleAffector \inqmlmodule QtQuick.Particles
The base Affector does not alter any attributes, but can be used to emit a signal when a particle meets certain conditions.
If an affector has a defined size, then it will only affect particles within its size and position on screen.
Affectors have different performance characteristics to the other particle system elements. In
particular, they have some simplifications to try to maintain a simulation at real-time or faster. When running a system with Affectors, irregular frame timings that grow too large ( > one second per frame) will cause the Affectors to try and cut corners with a faster but less accurate simulation. If the system has multiple affectors the order in which they are applied is not guaranteed, and when simulating larger time shifts they will simulate the whole shift each, which can lead to different results compared to smaller time shifts.
Accurate simulation for large numbers of particles (hundreds) with multiple affectors may be
possible on some hardware, but on less capable hardware you should expect small irregularties in the simulation as simulates with worse granularity.
\qmlproperty ParticleSystem QtQuick.Particles::Affector::system This is the system which will be affected by the element. If the Affector is a direct child of a ParticleSystem, it will automatically be associated with it.
\qmlproperty list<string> QtQuick.Particles::Affector::groups Which logical particle groups will be affected.
If empty, it will affect all particles.
\qmlproperty list<string> QtQuick.Particles::Affector::whenCollidingWith If any logical particle groups are specified here, then the affector will only be triggered if the particle being examined intersects with a particle of one of these groups.
This is different from the groups property. The groups property selects which particles might be examined, and if they meet other criteria (including being within the bounds of the Affector, modified by shape) then they will be tested again to see if they intersect with a particles from one of the particle groups in whenCollidingWith.
By default, no groups are specified.
\qmlproperty bool QtQuick.Particles::Affector::enabled If enabled is set to false, this affector will not affect any particles.
Usually this is used to conditionally turn an affector on or off.
Default value is true.
\qmlproperty bool QtQuick.Particles::Affector::once If once is set to true, this affector will only affect each particle once in their lifetimes. If the affector normally simulates a continuous effect over time, then it will simulate the effect of one second of time the one instant it affects the particle.
Default value is false.
\qmlproperty Shape QtQuick.Particles::Affector::shape If a size has been defined, the shape property can be used to affect a non-rectangular area.
\qmlsignal QtQuick.Particles::Affector::affected(real x, real y)
This signal is emitted when a particle is selected to be affected. It will not be emitted if a particle is considered by the Affector but not actually altered in any way.
In the special case where an Affector has no possible effect (e.g. Affector {}), this signal will be emitted for all particles being considered if you connect to it. This allows you to execute arbitrary code in response to particles (use the Affector::onAffectParticles signal handler if you want to execute code which affects the particles themselves). As this executes JavaScript code per particle, it is not recommended to use this signal with a high-volume particle system.
({x}, {y}) is the particle's current position.
Definition at line 100 of file qquickparticleaffector.cpp.
Inheritance diagram for QQuickParticleAffector:
1.12.0