API reference - Class QGraphicsOpacityEffect

_const_cast

Signature: [const] QGraphicsOpacityEffect ptr _const_cast

Description: Returns a non-const reference to self.

Basically, this method allows turning a const object reference to a non-const one. This method is provided as last resort to remove the constness from an object. Usually there is a good reason for a const object reference, so using this method may have undesired side effects.

This method has been introduced in version 0.29.6.

_create

Signature: void _create

Description: Ensures the C++ object is created

Use this method to ensure the C++ object is created, for example to ensure that resources are allocated. Usually C++ objects are created on demand and not necessarily when the script object is created.

_destroy

Signature: void _destroy

Description: Explicitly destroys the object

Explicitly destroys the object on C++ side if it was owned by the script interpreter. Subsequent access to this object will throw an exception. If the object is not owned by the script, this method will do nothing.

_destroyed?

Signature: [const] bool _destroyed?

Description: Returns a value indicating whether the object was already destroyed

This method returns true, if the object was destroyed, either explicitly or by the C++ side. The latter may happen, if the object is owned by a C++ object which got destroyed itself.

_is_const_object?

Signature: [const] bool _is_const_object?

Description: Returns a value indicating whether the reference is a const reference

This method returns true, if self is a const reference. In that case, only const methods may be called on self.

_manage

Signature: void _manage

Description: Marks the object as managed by the script side.

After calling this method on an object, the script side will be responsible for the management of the object. This method may be called if an object is returned from a C++ function and the object is known not to be owned by any C++ instance. If necessary, the script side may delete the object if the script's reference is no longer required.

Usually it's not required to call this method. It has been introduced in version 0.24.

_unmanage

Signature: void _unmanage

Description: Marks the object as no longer owned by the script side.

Calling this method will make this object no longer owned by the script's memory management. Instead, the object must be managed in some other way. Usually this method may be called if it is known that some C++ object holds and manages this object. Technically speaking, this method will turn the script's reference into a weak reference. After the script engine decides to delete the reference, the object itself will still exist. If the object is not managed otherwise, memory leaks will occur.

Usually it's not required to call this method. It has been introduced in version 0.24.

boundingRectFor

Signature: [const] QRectF boundingRectFor (const QRectF sourceRect)

Description: Virtual method QRectF QGraphicsOpacityEffect::boundingRectFor(const QRectF &sourceRect)

This method can be reimplemented in a derived class.

childEvent

Signature: void childEvent (QChildEvent ptr event)

Description: Virtual method void QGraphicsOpacityEffect::childEvent(QChildEvent *event)

This method can be reimplemented in a derived class.

customEvent

Signature: void customEvent (QEvent ptr event)

Description: Virtual method void QGraphicsOpacityEffect::customEvent(QEvent *event)

This method can be reimplemented in a derived class.

destroyed

Signature: [signal] void destroyed (QObject ptr arg1)

Description: Signal declaration for QGraphicsOpacityEffect::destroyed(QObject *)

You can bind a procedure to this signal.

Python specific notes:
The object exposes a readable attribute 'destroyed'. This is the getter.
The object exposes a writable attribute 'destroyed'. This is the setter.

disconnectNotify

Signature: void disconnectNotify (const QMetaMethod signal)

Description: Virtual method void QGraphicsOpacityEffect::disconnectNotify(const QMetaMethod &signal)

This method can be reimplemented in a derived class.

draw

Signature: void draw (QPainter ptr painter)

Description: Virtual method void QGraphicsOpacityEffect::draw(QPainter *painter)

This method can be reimplemented in a derived class.

drawSource

Signature: void drawSource (QPainter ptr painter)

Description: Method void QGraphicsOpacityEffect::drawSource(QPainter *painter)

This method is protected and can only be called from inside a derived class.

emit_destroyed

Signature: void emit_destroyed (QObject ptr arg1 = nullptr)

Description: Emitter for signal void QGraphicsOpacityEffect::destroyed(QObject *)

Call this method to emit this signal.

emit_enabledChanged

Signature: void emit_enabledChanged (bool enabled)

Description: Emitter for signal void QGraphicsOpacityEffect::enabledChanged(bool enabled)

Call this method to emit this signal.

emit_objectNameChanged

Signature: void emit_objectNameChanged (string objectName)

Description: Emitter for signal void QGraphicsOpacityEffect::objectNameChanged(const QString &objectName)

Call this method to emit this signal.

emit_opacityChanged

Signature: void emit_opacityChanged (double opacity)

Description: Emitter for signal void QGraphicsOpacityEffect::opacityChanged(double opacity)

Call this method to emit this signal.

emit_opacityMaskChanged

Signature: void emit_opacityMaskChanged (const QBrush mask)

Description: Emitter for signal void QGraphicsOpacityEffect::opacityMaskChanged(const QBrush &mask)

Call this method to emit this signal.

enabledChanged

Signature: [signal] void enabledChanged (bool enabled)

Description: Signal declaration for QGraphicsOpacityEffect::enabledChanged(bool enabled)

You can bind a procedure to this signal.

Python specific notes:
The object exposes a readable attribute 'enabledChanged'. This is the getter.
The object exposes a writable attribute 'enabledChanged'. This is the setter.

event

Signature: bool event (QEvent ptr event)

Description: Virtual method bool QGraphicsOpacityEffect::event(QEvent *event)

This method can be reimplemented in a derived class.

eventFilter

Signature: bool eventFilter (QObject ptr watched, QEvent ptr event)

Description: Virtual method bool QGraphicsOpacityEffect::eventFilter(QObject *watched, QEvent *event)

This method can be reimplemented in a derived class.

isSignalConnected

Signature: [const] bool isSignalConnected (const QMetaMethod signal)

Description: Method bool QGraphicsOpacityEffect::isSignalConnected(const QMetaMethod &signal)

This method is protected and can only be called from inside a derived class.

new

Signature: [static] new QGraphicsOpacityEffect new (QObject ptr parent = nullptr)

Description: Constructor QGraphicsOpacityEffect::QGraphicsOpacityEffect(QObject *parent)

This method creates an object of class QGraphicsOpacityEffect.

Python specific notes:
This method is the default initializer of the object.

objectNameChanged

Signature: [signal] void objectNameChanged (string objectName)

Description: Signal declaration for QGraphicsOpacityEffect::objectNameChanged(const QString &objectName)

You can bind a procedure to this signal.

Python specific notes:
The object exposes a readable attribute 'objectNameChanged'. This is the getter.
The object exposes a writable attribute 'objectNameChanged'. This is the setter.

opacity

Signature: [const] double opacity

Description: Method double QGraphicsOpacityEffect::opacity()

Python specific notes:
The object exposes a readable attribute 'opacity'. This is the getter.

opacity=

Signature: void opacity= (double opacity)

Description: Method void QGraphicsOpacityEffect::setOpacity(double opacity)

Python specific notes:
The object exposes a writable attribute 'opacity'. This is the setter.

opacityChanged

Signature: [signal] void opacityChanged (double opacity)

Description: Signal declaration for QGraphicsOpacityEffect::opacityChanged(double opacity)

You can bind a procedure to this signal.

Python specific notes:
The object exposes a readable attribute 'opacityChanged'. This is the getter.
The object exposes a writable attribute 'opacityChanged'. This is the setter.

opacityMask

Signature: [const] QBrush opacityMask

Description: Method QBrush QGraphicsOpacityEffect::opacityMask()

Python specific notes:
The object exposes a readable attribute 'opacityMask'. This is the getter.

opacityMask=

Signature: void opacityMask= (const QBrush mask)

Description: Method void QGraphicsOpacityEffect::setOpacityMask(const QBrush &mask)

Python specific notes:
The object exposes a writable attribute 'opacityMask'. This is the setter.

opacityMaskChanged

Signature: [signal] void opacityMaskChanged (const QBrush mask)

Description: Signal declaration for QGraphicsOpacityEffect::opacityMaskChanged(const QBrush &mask)

You can bind a procedure to this signal.

Python specific notes:
The object exposes a readable attribute 'opacityMaskChanged'. This is the getter.
The object exposes a writable attribute 'opacityMaskChanged'. This is the setter.

receivers

Signature: [const] int receivers (string signal)

Description: Method int QGraphicsOpacityEffect::receivers(const char *signal)

This method is protected and can only be called from inside a derived class.

sender

Signature: [const] QObject ptr sender

Description: Method QObject *QGraphicsOpacityEffect::sender()

This method is protected and can only be called from inside a derived class.

senderSignalIndex

Signature: [const] int senderSignalIndex

Description: Method int QGraphicsOpacityEffect::senderSignalIndex()

This method is protected and can only be called from inside a derived class.

setOpacity

Signature: void setOpacity (double opacity)

Description: Method void QGraphicsOpacityEffect::setOpacity(double opacity)

Python specific notes:
The object exposes a writable attribute 'opacity'. This is the setter.

setOpacityMask

Signature: void setOpacityMask (const QBrush mask)

Description: Method void QGraphicsOpacityEffect::setOpacityMask(const QBrush &mask)

Python specific notes:
The object exposes a writable attribute 'opacityMask'. This is the setter.

sourceBoundingRect

Signature: [const] QRectF sourceBoundingRect (const Qt_CoordinateSystem system = Qt::LogicalCoordinates)

Description: Method QRectF QGraphicsOpacityEffect::sourceBoundingRect(Qt::CoordinateSystem system)

This method is protected and can only be called from inside a derived class.

sourceChanged

Signature: void sourceChanged (QGraphicsEffect_QFlags_ChangeFlag flags)

Description: Virtual method void QGraphicsOpacityEffect::sourceChanged(QFlags<QGraphicsEffect::ChangeFlag> flags)

This method can be reimplemented in a derived class.

sourceIsPixmap

Signature: [const] bool sourceIsPixmap

Description: Method bool QGraphicsOpacityEffect::sourceIsPixmap()

This method is protected and can only be called from inside a derived class.

sourcePixmap

Signature: [const] QPixmap sourcePixmap (const Qt_CoordinateSystem system = Qt::LogicalCoordinates, QPoint ptr offset = nullptr, const QGraphicsEffect_PixmapPadMode mode = QGraphicsEffect::PadToEffectiveBoundingRect)

Description: Method QPixmap QGraphicsOpacityEffect::sourcePixmap(Qt::CoordinateSystem system, QPoint *offset, QGraphicsEffect::PixmapPadMode mode)

This method is protected and can only be called from inside a derived class.

staticMetaObject

Signature: [static] QMetaObject staticMetaObject

Description: Obtains the static MetaObject for this class.

timerEvent

Signature: void timerEvent (QTimerEvent ptr event)

Description: Virtual method void QGraphicsOpacityEffect::timerEvent(QTimerEvent *event)

This method can be reimplemented in a derived class.

tr

Signature: [static] string tr (string s, string c = nullptr, int n = -1)

Description: Static method QString QGraphicsOpacityEffect::tr(const char *s, const char *c, int n)

This method is static and can be called without an instance.

trUtf8

Signature: [static] string trUtf8 (string s, string c = nullptr, int n = -1)

Description: Static method QString QGraphicsOpacityEffect::trUtf8(const char *s, const char *c, int n)

This method is static and can be called without an instance.

updateBoundingRect

Signature: void updateBoundingRect

Description: Method void QGraphicsOpacityEffect::updateBoundingRect()

This method is protected and can only be called from inside a derived class.