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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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Public Member Functions | List of all members
QSGOpenVGContext Class Reference

#include <qsgopenvgcontext_p.h>

+ Inheritance diagram for QSGOpenVGContext:
+ Collaboration diagram for QSGOpenVGContext:

Public Member Functions

 QSGOpenVGContext (QObject *parent=nullptr)
 
QSGRenderContext * createRenderContext () override
 
QSGRectangleNode * createRectangleNode () override
 
QSGImageNode * createImageNode () override
 
QSGPainterNode * createPainterNode (QQuickPaintedItem *item) override
 
QSGGlyphNode * createGlyphNode (QSGRenderContext *rc, bool preferNativeGlyphNode, int renderTypeQuality) override
 
QSGNinePatchNode * createNinePatchNode () override
 
QSGLayer * createLayer (QSGRenderContext *renderContext) override
 
QSurfaceFormat defaultSurfaceFormat () const override
 
QSGInternalRectangleNode * createInternalRectangleNode () override
 
QSGInternalImageNode * createInternalImageNode (QSGRenderContext *renderContext) override
 
QSGRendererInterface * rendererInterface (QSGRenderContext *renderContext) override
 Returns a pointer to the (presumably) global renderer interface.
 
- Public Member Functions inherited from QSGContext
 QSGContext (QObject *parent=nullptr)
 
 ~QSGContext () override
 
virtual void renderContextInitialized (QSGRenderContext *renderContext)
 
virtual void renderContextInvalidated (QSGRenderContext *renderContext)
 
QSGInternalRectangleNode * createInternalRectangleNode (const QRectF &rect, const QColor &c)
 Convenience factory function for creating a colored rectangle with the given geometry.
 
virtual QSGInternalTextNode * createInternalTextNode (QSGRenderContext *renderContext)
 
virtual QSGGlyphNode * createGlyphNode (QSGRenderContext *rc, QSGTextNode::RenderType renderType, int renderTypeQuality)=0
 
virtual QSGGuiThreadShaderEffectManager * createGuiThreadShaderEffectManager ()
 Creates a new shader effect helper instance.
 
virtual QSGShaderEffectNode * createShaderEffectNode (QSGRenderContext *renderContext)
 Creates a new shader effect node.
 
virtual QAnimationDriver * createAnimationDriver (QObject *parent)
 Creates a new animation driver.
 
virtual float vsyncIntervalForAnimationDriver (QAnimationDriver *driver)
 
virtual bool isVSyncDependent (QAnimationDriver *driver)
 
virtual QSize minimumFBOSize () const
 
virtual QSGTextNode * createTextNode (QSGRenderContext *renderContext)
 
- 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< QString > bindableObjectName ()
 
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).
 
QThread * thread () 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 >
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 >
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 QObjectList & children () 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< QByteArray > dynamicPropertyNames () const
 
QBindingStorage * bindingStorage ()
 
const QBindingStorage * bindingStorage () const
 
QObject * parent () 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.
 

Additional Inherited Members

- Public Types inherited from QSGContext
enum  AntialiasingMethod { UndecidedAntialiasing , VertexAntialiasing , MsaaAntialiasing }
 
- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 
- 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.
 
- Static Public Member Functions inherited from QSGContext
static QSGContext * createDefaultContext ()
 Creates a default scene graph context for the current hardware.
 
static QQuickTextureFactory * createTextureFactoryFromImage (const QImage &image)
 Calls into the scene graph adaptation if available and creates a texture factory.
 
static QSGRenderLoop * createWindowManager ()
 Calls into the scene graph adaptation if available and creates a hardware specific window manager.
 
static void setBackend (const QString &backend)
 
static QString backend ()
 
- 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
QObject * sender () 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< QObjectData > d_ptr
 
- Properties inherited from QObject
QString objectName
 the name of this object
 
- Related Symbols inherited from QObject
 Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
 
 
 
 \macro Q_CLASSINFO(Name, Value)
 

Detailed Description

Definition at line 52 of file qsgopenvgcontext_p.h.

Constructor & Destructor Documentation

◆ QSGOpenVGContext()

QSGOpenVGContext::QSGOpenVGContext ( QObject * parent = nullptr)

Definition at line 78 of file qsgopenvgcontext.cpp.

References QObject::parent(), and Q_UNUSED.

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Member Function Documentation

◆ createGlyphNode()

QSGGlyphNode * QSGOpenVGContext::createGlyphNode ( QSGRenderContext * rc,
bool preferNativeGlyphNode,
int renderTypeQuality )
override

Definition at line 104 of file qsgopenvgcontext.cpp.

References Q_UNUSED.

◆ createImageNode()

QSGImageNode * QSGOpenVGContext::createImageNode ( )
overridevirtual

Implements QSGContext.

Definition at line 93 of file qsgopenvgcontext.cpp.

◆ createInternalImageNode()

QSGInternalImageNode * QSGOpenVGContext::createInternalImageNode ( QSGRenderContext * renderContext)
overridevirtual

Implements QSGContext.

Definition at line 134 of file qsgopenvgcontext.cpp.

◆ createInternalRectangleNode()

QSGInternalRectangleNode * QSGOpenVGContext::createInternalRectangleNode ( )
overridevirtual

Implements QSGContext.

Definition at line 129 of file qsgopenvgcontext.cpp.

◆ createLayer()

QSGLayer * QSGOpenVGContext::createLayer ( QSGRenderContext * renderContext)
overridevirtual

Implements QSGContext.

Definition at line 116 of file qsgopenvgcontext.cpp.

◆ createNinePatchNode()

QSGNinePatchNode * QSGOpenVGContext::createNinePatchNode ( )
overridevirtual

Implements QSGContext.

Definition at line 111 of file qsgopenvgcontext.cpp.

◆ createPainterNode()

QSGPainterNode * QSGOpenVGContext::createPainterNode ( QQuickPaintedItem * item)
overridevirtual

Implements QSGContext.

Definition at line 98 of file qsgopenvgcontext.cpp.

References item, and Q_UNUSED.

◆ createRectangleNode()

QSGRectangleNode * QSGOpenVGContext::createRectangleNode ( )
overridevirtual

Implements QSGContext.

Definition at line 88 of file qsgopenvgcontext.cpp.

◆ createRenderContext()

QSGRenderContext * QSGOpenVGContext::createRenderContext ( )
overridevirtual

Implements QSGContext.

Definition at line 83 of file qsgopenvgcontext.cpp.

◆ defaultSurfaceFormat()

QSurfaceFormat QSGOpenVGContext::defaultSurfaceFormat ( ) const
overridevirtual

Implements QSGContext.

Definition at line 121 of file qsgopenvgcontext.cpp.

References QSurfaceFormat::defaultFormat(), and QSurfaceFormat::OpenVG.

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◆ rendererInterface()

QSGRendererInterface * QSGOpenVGContext::rendererInterface ( QSGRenderContext * renderContext)
overridevirtual

Returns a pointer to the (presumably) global renderer interface.

Note
This function may be called on the GUI thread in order to get access to QSGRendererInterface::graphicsApi() and other getters.
it is expected that the simple queries (graphicsApi, shaderType, etc.) are available regardless of the render context validity (i.e. scenegraph status). This does not apply to engine-specific getters like getResource(). In the end this means that this function must always return a valid object in subclasses, even when renderContext->isValid() is false. The typical pattern is to implement the QSGRendererInterface in the QSGContext or QSGRenderContext subclass itself, whichever is more suitable.

Reimplemented from QSGContext.

Definition at line 154 of file qsgopenvgcontext.cpp.

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