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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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QWaylandQuickHardwareLayer Class Reference

#include <qwaylandquickhardwarelayer_p.h>

+ Inheritance diagram for QWaylandQuickHardwareLayer:
+ Collaboration diagram for QWaylandQuickHardwareLayer:

Signals

void stackingLevelChanged ()
 
- 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

 QWaylandQuickHardwareLayer (QObject *parent=nullptr)
 \qmltype WaylandHardwareLayer \inqmlmodule QtWayland.Compositor \preliminary
 
 ~QWaylandQuickHardwareLayer () override
 
int stackingLevel () const
 \qmlproperty int QtWayland.Compositor::WaylandHardwareLayer::stackingLevel
 
void setStackingLevel (int level)
 
QWaylandQuickItemwaylandItem () const
 
void classBegin () override
 Invoked after class creation, but before any properties have been set.
 
void componentComplete () override
 Invoked after the root component that caused this instantiation has completed construction.
 
void setSceneGraphPainting (bool)
 
void initialize ()
 
- 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 event (QEvent *event)
 This virtual function receives events to an object and should return true if the event e was recognized and processed.
 
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

int stackingLevel
 
- Properties inherited from QObject
QString objectName
 the name of this object
 

Additional Inherited Members

- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- 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)
 
- 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 QObject
QScopedPointer< QObjectDatad_ptr
 

Detailed Description

Definition at line 25 of file qwaylandquickhardwarelayer_p.h.

Constructor & Destructor Documentation

◆ QWaylandQuickHardwareLayer()

QWaylandQuickHardwareLayer::QWaylandQuickHardwareLayer ( QObject * parent = nullptr)
explicit

\qmltype WaylandHardwareLayer \inqmlmodule QtWayland.Compositor \preliminary

Makes a parent WaylandQuickItem use hardware layers for rendering.

This item needs to be a descendant of a WaylandQuickItem or a derivative, (i.e. ShellSurfaceItem or similar)

The Surface of the parent WaylandQuickItem will be drawn in a hardware specific way instead of the regular way using the QtQuick scene graph. On some platforms, the WaylandQuickItem's current buffer and the scene graph can be blended in a separate step. This makes it possible for clients to update continuously without triggering a full redraw of the compositor scene graph for each frame.

The preferred hardware layer integration may be overridden by setting the QT_WAYLAND_HARDWARE_LAYER_INTEGRATION environment variable.

Definition at line 69 of file qwaylandquickhardwarelayer.cpp.

◆ ~QWaylandQuickHardwareLayer()

QWaylandQuickHardwareLayer::~QWaylandQuickHardwareLayer ( )
override

Definition at line 74 of file qwaylandquickhardwarelayer.cpp.

References d.

Member Function Documentation

◆ classBegin()

void QWaylandQuickHardwareLayer::classBegin ( )
overridevirtual

Invoked after class creation, but before any properties have been set.

Implements QQmlParserStatus.

Definition at line 116 of file qwaylandquickhardwarelayer.cpp.

References d, QObject::parent(), and waylandItem().

Referenced by initialize().

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◆ componentComplete()

void QWaylandQuickHardwareLayer::componentComplete ( )
overridevirtual

Invoked after the root component that caused this instantiation has completed construction.

At this point all static values and binding values have been assigned to the class.

Implements QQmlParserStatus.

Definition at line 127 of file qwaylandquickhardwarelayer.cpp.

References d, Q_ASSERT, and qWarning.

Referenced by initialize().

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◆ initialize()

void QWaylandQuickHardwareLayer::initialize ( )

Definition at line 143 of file qwaylandquickhardwarelayer.cpp.

References classBegin(), and componentComplete().

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◆ setSceneGraphPainting()

void QWaylandQuickHardwareLayer::setSceneGraphPainting ( bool enable)

Definition at line 137 of file qwaylandquickhardwarelayer.cpp.

References QWaylandQuickItem::setPaintEnabled(), and waylandItem().

Referenced by Vsp2Layer::Vsp2Layer().

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◆ setStackingLevel()

void QWaylandQuickHardwareLayer::setStackingLevel ( int level)

Definition at line 100 of file qwaylandquickhardwarelayer.cpp.

References d, emit, and stackingLevelChanged().

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◆ stackingLevel()

int QWaylandQuickHardwareLayer::stackingLevel ( ) const

\qmlproperty int QtWayland.Compositor::WaylandHardwareLayer::stackingLevel

This property holds the stacking level of this hardware layer relative to other hardware layers, and can be used to sort hardware layers. I.e. a layer with a higher level is rendered on top of one with a lower level.

Layers with level 0 will be drawn in an implementation defined order on top of the compositor scene graph.

Layers with a level below 0 are drawn beneath the compositor scene graph, if supported by the hardware layer integration.

Definition at line 94 of file qwaylandquickhardwarelayer.cpp.

References d.

◆ stackingLevelChanged

void QWaylandQuickHardwareLayer::stackingLevelChanged ( )
signal

Referenced by Vsp2Layer::Vsp2Layer(), and setStackingLevel().

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◆ waylandItem()

QWaylandQuickItem * QWaylandQuickHardwareLayer::waylandItem ( ) const

Definition at line 110 of file qwaylandquickhardwarelayer.cpp.

References d.

Referenced by Vsp2Layer::Vsp2Layer(), classBegin(), Vsp2Layer::enableVspLayer(), Vsp2Layer::handleBufferCommitted(), Vsp2Layer::handleSurfaceChanged(), setSceneGraphPainting(), Vsp2Layer::updateOpacity(), and Vsp2Layer::updatePosition().

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Property Documentation

◆ stackingLevel

int QWaylandQuickHardwareLayer::stackingLevel
readwrite

Definition at line 30 of file qwaylandquickhardwarelayer_p.h.


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