#include <qquickcontext2dtexture_p.h>

Inheritance diagram for QQuickContext2DTexture:

Collaboration diagram for QQuickContext2DTexture:

Classes
class	CanvasChangeEvent
class	PaintEvent

Public Slots
void	canvasChanged (const QSize &canvasSize, const QSize &tileSize, const QRect &canvasWindow, const QRect &dirtyRect, bool smooth, bool antialiasing)
void	paint (QQuickContext2DCommandBuffer *ccb)
void	markDirtyTexture ()
void	setItem (QQuickCanvasItem *item)
virtual void	grabImage (const QRectF &region=QRectF())=0
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals
void	textureChanged ()
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
	QQuickContext2DTexture ()
	~QQuickContext2DTexture ()
virtual QQuickCanvasItem::RenderTarget	renderTarget () const =0
bool	setCanvasSize (const QSize &size)
bool	setTileSize (const QSize &size)
bool	setCanvasWindow (const QRect &canvasWindow)
void	setSmooth (bool smooth)
void	setAntialiasing (bool antialiasing)
bool	setDirtyRect (const QRect &dirtyRect)
bool	canvasDestroyed ()
void	setOnCustomThread (bool is)
bool	isOnCustomThread () const
virtual QSGTexture *	textureForNextFrame (QSGTexture lastFrame, QQuickWindow window)=0
bool	event (QEvent *e) override
	This virtual function receives events to an object and should return true if the event e was recognized and processed.
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< 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	isQmlObjectType () const
	Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
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`.

Static Public Member Functions
static QRect	tiledRect (const QRectF &window, const QSize &tileSize)
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
virtual QVector2D	scaleFactor () const
void	paintWithoutTiles (QQuickContext2DCommandBuffer *ccb)
virtual QPaintDevice *	beginPainting ()
virtual void	endPainting ()
virtual QQuickContext2DTile *	createTile () const =0
virtual void	compositeTile (QQuickContext2DTile *tile)=0
void	clearTiles ()
virtual QSize	adjustedTileSize (const QSize &ts)
QRect	createTiles (const QRect &window)
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
QList< QQuickContext2DTile * >	m_tiles
QQuickContext2D *	m_context
QSurface *	m_surface
QQuickContext2D::State	m_state
QQuickCanvasItem *	m_item
QSize	m_canvasSize
QSize	m_tileSize
QRect	m_canvasWindow
qreal	m_canvasDevicePixelRatio
QMutex	m_mutex
QWaitCondition	m_condition
uint	m_canvasWindowChanged: 1
uint	m_dirtyTexture: 1
uint	m_smooth: 1
uint	m_antialiasing: 1
uint	m_tiledCanvas: 1
uint	m_painting: 1
uint	m_onCustomThread: 1
Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Additional Inherited Members
Properties inherited from QObject
QString	objectName
	the name of this object
Related Symbols inherited from QObject
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)

Detailed Description

Definition at line 35 of file qquickcontext2dtexture_p.h.

Constructor & Destructor Documentation

◆ QQuickContext2DTexture()

QT_BEGIN_NAMESPACE QQuickContext2DTexture::QQuickContext2DTexture ( )

Definition at line 18 of file qquickcontext2dtexture.cpp.

Referenced by QQuickContext2DImageTexture::QQuickContext2DImageTexture().

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◆ ~QQuickContext2DTexture()

QQuickContext2DTexture::~QQuickContext2DTexture ( )

Definition at line 32 of file qquickcontext2dtexture.cpp.

References clearTiles().

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Member Function Documentation

◆ adjustedTileSize()

QSize QQuickContext2DTexture::adjustedTileSize ( const QSize & ts )

protectedvirtual

Definition at line 300 of file qquickcontext2dtexture.cpp.

◆ beginPainting()

virtual QPaintDevice * QQuickContext2DTexture::beginPainting ( )

inlineprotectedvirtual

Reimplemented in QQuickContext2DImageTexture.

Definition at line 104 of file qquickcontext2dtexture_p.h.

◆ canvasChanged

void QQuickContext2DTexture::canvasChanged	(	const QSize &	canvasSize,
		const QSize &	tileSize,
		const QRect &	canvasWindow,
		const QRect &	dirtyRect,
		bool	smooth,
		bool	antialiasing )

slot

Definition at line 129 of file qquickcontext2dtexture.cpp.

References setAntialiasing(), and setSmooth().

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◆ canvasDestroyed()

bool QQuickContext2DTexture::canvasDestroyed ( )

Definition at line 178 of file qquickcontext2dtexture.cpp.

References m_item.

Referenced by paint().

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◆ clearTiles()

void QQuickContext2DTexture::clearTiles ( )

protected

Definition at line 294 of file qquickcontext2dtexture.cpp.

Referenced by ~QQuickContext2DTexture().

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◆ compositeTile()

virtual void QQuickContext2DTexture::compositeTile ( QQuickContext2DTile * tile )

protectedpure virtual

Implemented in QQuickContext2DImageTexture.

◆ createTile()

virtual QQuickContext2DTile * QQuickContext2DTexture::createTile ( ) const

protectedpure virtual

Implemented in QQuickContext2DImageTexture.

Referenced by createTiles().

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◆ createTiles()

QRect QQuickContext2DTexture::createTiles ( const QRect & window )

protected

Definition at line 244 of file qquickcontext2dtexture.cpp.

References createTile().

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◆ endPainting()

virtual void QQuickContext2DTexture::endPainting ( )

inlineprotectedvirtual

Reimplemented in QQuickContext2DImageTexture.

Definition at line 105 of file qquickcontext2dtexture_p.h.

Referenced by QQuickContext2DImageTexture::endPainting(), paint(), and paintWithoutTiles().

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◆ event()

bool QQuickContext2DTexture::event ( QEvent * e )

overridevirtual

This virtual function receives events to an object and should return true if the event e was recognized and processed.

The event() function can be reimplemented to customize the behavior of an object.

Make sure you call the parent event class implementation for all the events you did not handle.

Example:

class MyClass : public QWidget
{
    Q_OBJECT
 
public:
    MyClass(QWidget *parent = nullptr);
    ~MyClass();
 
    bool event(QEvent* ev) override
    {
        if (ev->type() == QEvent::PolishRequest) {
            // overwrite handling of PolishRequest if any
            doThings();
            return true;
        } else  if (ev->type() == QEvent::Show) {
            // complement handling of Show if any
            doThings2();
            QWidget::event(ev);
            return true;
        }
        // Make sure the rest of events are handled
        return QWidget::event(ev);
    }
};