Convenience subclass of QWindow that is also a QPaintDevice. More...

Inheritance diagram for QPaintDeviceWindow:

Public Slots
void	update ()

Public Slots inherited from QWindow
void	alert (int msec)

bool	close ()

void	hide ()

void	lower ()

void	raise ()

void	requestActivate ()

void	requestUpdate ()

void	setMaximumWidth (int width)

void	setVisible (bool visible)

void	show ()

void	showFullScreen ()

void	showMaximized ()

void	showMinimized ()

void	showNormal ()

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
qreal	devicePixelRatio () const

Public Methods inherited from QWindow
	QWindow (QScreen *screen=nullptr)

	QWindow (QWindow *parent)

virtual	~QWindow ()

QSize	baseSize () const

Qt::ScreenOrientation	contentOrientation () const

void	create ()

QCursor	cursor () const

void	destroy ()

qreal	devicePixelRatio () const

QString	filePath () const

Qt::WindowFlags	flags () const

virtual QObject *	focusObject () const

QSurfaceFormat	format () const override

QRect	frameGeometry () const

QMargins	frameMargins () const

QPoint	framePosition () const

QRect	geometry () const

QIcon	icon () const

bool	isActive () const

bool	isAncestorOf (const QWindow *child, AncestorMode mode=IncludeTransients) const

bool	isExposed () const

bool	isModal () const

bool	isTopLevel () const

bool	isVisible () const

QPoint	mapFromGlobal (const QPoint &pos) const

QPoint	mapToGlobal (const QPoint &pos) const

QRegion	mask () const

QSize	maximumSize () const

QSize	minimumSize () const

Qt::WindowModality	modality () const

QWindow *	parent () const

QPoint	position () const

void	reportContentOrientationChange (Qt::ScreenOrientation orientation)

QSurfaceFormat	requestedFormat () const

void	resize (const QSize &newSize)

void	resize (int w, int h)

QScreen *	screen () const

void	setBaseSize (const QSize &size)

void	setCursor (const QCursor &cursor)

void	setFilePath (const QString &filePath)

void	setFlags (Qt::WindowFlags flags)

void	setFormat (const QSurfaceFormat &format)

void	setFramePosition (const QPoint &point)

void	setGeometry (const QRect &rect)

void	setGeometry (int posx, int posy, int w, int h)

void	setIcon (const QIcon &icon)

bool	setKeyboardGrabEnabled (bool grab)

void	setMask (const QRegion &region)

void	setMaximumSize (const QSize &size)

void	setMinimumSize (const QSize &size)

void	setModality (Qt::WindowModality modality)

bool	setMouseGrabEnabled (bool grab)

void	setParent (QWindow *parent)

void	setPosition (const QPoint &pt)

void	setPosition (int posx, int posy)

void	setScreen (QScreen *screen)

void	setSizeIncrement (const QSize &size)

void	setSurfaceType (SurfaceType surfaceType)

void	setTransientParent (QWindow *parent)

void	setVulkanInstance (QVulkanInstance *instance)

void	setWindowState (Qt::WindowState state)

QSize	size () const override

QSize	sizeIncrement () const

SurfaceType	surfaceType () const override

QWindow *	transientParent () const

Qt::WindowType	type () const

void	unsetCursor ()

QVulkanInstance *	vulkanInstance () const

Qt::WindowState	windowState () const

WId	winId () const

Public Methods inherited from QObject
	QObject (QObject *parent=nullptr)

	~QObject ()

bool	blockSignals (bool block)

const QList< QObject * > &	children () const

bool	connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QString >	dynamicPropertyNames () const

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

template<typename T >
T	findChild (const QString &childName=QString ()) const

template<class T >
QList< T >	findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

template<class T >
QList< T >	findChildren (const QString &childName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

bool	inherits (const QString &className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

QObject *	parent () const

template<class T = QVariant>
T	property (const QString &name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const QString &name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)

QThread *	thread () const

Public Methods inherited from QSurface
virtual	~QSurface ()

virtual QSurfaceFormat	format () const = 0

virtual QSize	size () const = 0

bool	supportsOpenGL () const

SurfaceClass	surfaceClass () const

virtual QPlatformSurface *	surfaceHandle () const = 0

virtual SurfaceType	surfaceType () const = 0

Public Methods inherited from QPaintDevice
virtual	~QPaintDevice ()

int	colorCount () const

int	depth () const

int	devicePixelRatio () const

qreal	devicePixelRatioF () const

int	height () const

int	heightMM () const

int	logicalDpiX () const

int	logicalDpiY () const

bool	paintingActive () const

int	physicalDpiX () const

int	physicalDpiY () const

int	width () const

int	widthMM () const

Protected Methods
int	metric (PaintDeviceMetric metric) const override

virtual void	paintEvent (QPaintEvent *event)

Protected Methods inherited from QWindow
bool	event (QEvent *event) override

virtual void	exposeEvent (QExposeEvent *event)

virtual void	focusInEvent (QFocusEvent *event)

virtual void	focusOutEvent (QFocusEvent *event)

virtual void	hideEvent (QHideEvent *event)

virtual void	keyPressEvent (QKeyEvent *event)

virtual void	keyReleaseEvent (QKeyEvent *event)

virtual void	mouseDoubleClickEvent (QMouseEvent *event)

virtual void	mouseMoveEvent (QMouseEvent *event)

virtual void	mousePressEvent (QMouseEvent *event)

virtual void	mouseReleaseEvent (QMouseEvent *event)

virtual void	moveEvent (QMoveEvent *event)

virtual bool	nativeEvent (const QByteArray &eventType, void message, long result)

virtual void	resizeEvent (QResizeEvent *event)

virtual void	showEvent (QShowEvent *event)

virtual void	tabletEvent (QTabletEvent *event)

virtual void	wheelEvent (QWheelEvent *event)

Protected Methods inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signalMethod) const

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signalMethod) const

bool	isSignalConnected (const QMetaMethod &signalMethod) const

int	receivers (const QString &signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Protected Methods inherited from QSurface
	QSurface (SurfaceClass type)

Protected Methods inherited from QPaintDevice
	QPaintDevice ()

Properties
	height

	width

Properties inherited from QWindow
	active

	contentOrientation

	flags

	height

	maximumHeight

	maximumWidth

	minimumHeight

	minimumWidth

	modality

	opacity

	title

	visibility

	visible

	width

	x

	y

Properties inherited from QObject
	objectName

Additional Inherited Members
Public Types inherited from QWindow
enum	AncestorMode

enum	Visibility

Public Types inherited from QSurface
enum	SurfaceClass

enum	SurfaceType

Public Types inherited from QPaintDevice
enum	PaintDeviceMetric

Public Signals inherited from QWindow
void	contentOrientationChanged (Qt::ScreenOrientation orientation)

void	focusObjectChanged (QObject *object)

void	modalityChanged (Qt::WindowModality modality)

void	screenChanged (QScreen *screen)

void	windowStateChanged (Qt::WindowState windowState)

Public Signals inherited from QObject
void	destroyed (QObject *obj=nullptr)

void	objectNameChanged (const QString &objectName)

Static Public Methods inherited from QWindow
static QWindow *	fromWinId (WId id)

Static Public Methods inherited from QObject
static bool	connect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

static bool	connect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())

static bool	connect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, std::nullptr_t, const QObject receiver, std::nullptr_t)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...))

template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)

static QMetaObject &	staticMetaObject ()

static QString	tr (const char text, const char comment=nullptr, std::optional< int > numArg=std::optional< int >())

Related Functions inherited from QObject
T	qobject_cast (QObject *object)

	QObjectList

Detailed Description

Convenience subclass of QWindow that is also a QPaintDevice.

QPaintDeviceWindow is like a regular QWindow, with the added functionality of being a paint device too. Whenever the content needs to be updated, the virtual paintEvent() function is called. Subclasses, that reimplement this function, can then simply open a QPainter on the window.

This class should normally not be used directly in your application. It is intended to be used as a base class which you inherit and extend the functionality.

See also: QOpenGLWindow

Note: Additional documentation pending.

Method Documentation

qreal QWindow::devicePixelRatio ( ) const

using

Returns the ratio between physical pixels and device-independent pixels for the window. This value is dependent on the screen the window is on, and may change when the window is moved.

Common values are 1.0 on normal displays and 2.0 on Apple "retina" displays.

Note: For windows not backed by a platform window, meaning that create() was not called, the function will fall back to QApplication::devicePixelRatio() which in turn returns the highest screen device pixel ratio found on the system.

See also: QScreen::devicePixelRatio(), QApplication::devicePixelRatio()

int QPaintDeviceWindow::metric ( PaintDeviceMetric metric ) const

overrideprotectedvirtual

Returns the metric information for the given paint device metric.

See also: PaintDeviceMetric

Reimplemented from QPaintDevice::metric()

Reimplemented in QRasterWindow::metric()

void QPaintDeviceWindow::paintEvent ( QPaintEvent * event )

protectedvirtual

Handles paint events passed by the parameter event. The default implementation does nothing. Reimplement this function to perform painting. If necessary, the dirty area is retrievable from the event.

Reimplemented in QOpenGLWindow::paintEvent()

void QPaintDeviceWindow::update ( )

slot

Marks the entire window as dirty and schedules a repaint. Subsequent calls to this function before the next paint event will get ignored.

For non-exposed windows the update is deferred until the window becomes exposed again.

Property Documentation

QWindow::height

using

The height of the window's geometry.

Properties	Class Methods
read
write
notify

QWindow::width

using

The width of the window's geometry.

Properties	Class Methods
read
write
notify

Public Slots

Public Methods

Protected Methods

Properties

Additional Inherited Members

Detailed Description

Method Documentation

Property Documentation