The QGraphicsDropShadowEffect class provides a drop shadow effect. More...

Inheritance diagram for QGraphicsDropShadowEffect:

Public Signals
void	blurRadiusChanged (qreal blurRadius)

void	colorChanged (const QColor &color)

void	offsetChanged (const QPointF &offset)

Public Signals inherited from QGraphicsEffect
void	enabledChanged (bool enabled)

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

void	objectNameChanged (const QString &objectName)

Public Slots
void	setBlurRadius (qreal blurRadius)

void	setColor (const QColor &color)

void	setOffset (const QPointF &ofs)

void	setOffset (qreal d)

void	setOffset (qreal dx, qreal dy)

void	setXOffset (qreal dx)

void	setYOffset (qreal dy)

Public Slots inherited from QGraphicsEffect
void	setEnabled (bool enable)

void	update ()

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
	QGraphicsDropShadowEffect (QObject *parent=nullptr)

	~QGraphicsDropShadowEffect ()

qreal	blurRadius () const

QRectF	boundingRectFor (const QRectF &rect) const override

QColor	color () const

QPointF	offset () const

qreal	xOffset () const

qreal	yOffset () const

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

virtual	~QGraphicsEffect ()

QRectF	boundingRect () const

bool	isEnabled () 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

Protected Methods
void	draw (QPainter *painter) override

Protected Methods inherited from QGraphicsEffect
void	drawSource (QPainter *painter)

QRectF	sourceBoundingRect (Qt::CoordinateSystem system=Qt::LogicalCoordinates) const

virtual void	sourceChanged (ChangeFlags flags)

bool	sourceIsPixmap () const

QPixmap	sourcePixmap (Qt::CoordinateSystem system=Qt::LogicalCoordinates, QPoint *offset=nullptr, PixmapPadMode mode=PadToEffectiveBoundingRect) const

void	updateBoundingRect ()

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)

Properties
	blurRadius

	color

	offset

	xOffset

	yOffset

Properties inherited from QGraphicsEffect
	enabled

Properties inherited from QObject
	objectName

Additional Inherited Members
Public Typedefs inherited from QGraphicsEffect
using	ChangeFlags = QFlags< ChangeFlag >

Public Types inherited from QGraphicsEffect
enum	ChangeFlag

enum	PixmapPadMode

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

The QGraphicsDropShadowEffect class provides a drop shadow effect.

A drop shadow effect renders the source with a drop shadow. The color of the drop shadow can be modified using the setColor() function. The drop shadow offset can be modified using the setOffset() function and the blur radius of the drop shadow can be changed with the setBlurRadius() function.

By default, the drop shadow is a semi-transparent dark gray (QColor(63, 63, 63, 180)) shadow, blurred with a radius of 1 at an offset of 8 pixels towards the lower right. The drop shadow offset is specified in device coordinates.

See also: QGraphicsBlurEffect, QGraphicsColorizeEffect, QGraphicsOpacityEffect

Constructor & Destructor Documentation

QGraphicsDropShadowEffect::QGraphicsDropShadowEffect ( QObject * parent = nullptr )

Constructs a new QGraphicsDropShadowEffect instance. The parent object is passed to the QGraphicsEffect constructor.

QGraphicsDropShadowEffect::~QGraphicsDropShadowEffect ( )

Destroys the effect.

Method Documentation

qreal QGraphicsDropShadowEffect::blurRadius ( ) const

Returns the blur radius.

void QGraphicsDropShadowEffect::blurRadiusChanged ( qreal blurRadius )

signal

This signal is emitted whenever the effect's blur radius changes. The blurRadius parameter holds the effect's new blur radius.

QRectF QGraphicsDropShadowEffect::boundingRectFor ( const QRectF & rect ) const

overridevirtual

Reimplemented from QGraphicsEffect::boundingRectFor()

QColor QGraphicsDropShadowEffect::color ( ) const

Returns the color.

void QGraphicsDropShadowEffect::colorChanged ( const QColor & color )

signal

This signal is emitted whenever the effect's color changes. The color parameter holds the effect's new color.

void QGraphicsDropShadowEffect::draw ( QPainter * painter )

overrideprotectedvirtual

Implements QGraphicsEffect::draw()

QPointF QGraphicsDropShadowEffect::offset ( ) const

Returns the shadow offset.

void QGraphicsDropShadowEffect::offsetChanged ( const QPointF & offset )

signal

This signal is emitted whenever the effect's shadow offset changes. The offset parameter holds the effect's new shadow offset.

void QGraphicsDropShadowEffect::setBlurRadius ( qreal blurRadius )

slot

Sets the blur radius.

void QGraphicsDropShadowEffect::setColor ( const QColor & color )

slot

Sets the color.

void QGraphicsDropShadowEffect::setOffset ( const QPointF & ofs )

inlineslot

Sets the shadow offset.

void QGraphicsDropShadowEffect::setOffset ( qreal d )

slot

Sets the shadow offset.

void QGraphicsDropShadowEffect::setOffset	(	qreal	dx,
		qreal	dy
	)

slot

Sets the shadow offset.

void QGraphicsDropShadowEffect::setXOffset ( qreal dx )

inlineslot

Sets the horizontal shadow offset.

void QGraphicsDropShadowEffect::setYOffset ( qreal dy )

inlineslot

Sets the vertical shadow offset.

qreal QGraphicsDropShadowEffect::xOffset ( ) const

inline

Returns the horizontal shadow offset.

qreal QGraphicsDropShadowEffect::yOffset ( ) const

inline

Returns the vertical shadow offset.

Property Documentation

QGraphicsDropShadowEffect::blurRadius

This property holds the blur radius in pixels of the drop shadow.

Using a smaller radius results in a sharper shadow, whereas using a bigger radius results in a more blurred shadow.

By default, the blur radius is 1 pixel.

See also: color(), offset()

Properties	Class Methods
read	blurRadius
write	setBlurRadius
notify	blurRadiusChanged

QGraphicsDropShadowEffect::color

This property holds the color of the drop shadow. By default the drop color is a semi-transparent dark gray (QColor(63, 63, 63, 180)).

See also: offset(), blurRadius()

Properties	Class Methods
read	color
write	setColor
notify	colorChanged

QGraphicsDropShadowEffect::offset

This property holds the shadow offset in pixels. By default the offset is 8 pixels towards the lower right.

The offset is given in device coordinates, which means it is unaffected by scale.

See also: xOffset(), yOffset(), blurRadius(), color()

Properties	Class Methods
read	offset
write	setOffset
notify	offsetChanged

QGraphicsDropShadowEffect::xOffset

This property holds the horizontal shadow offset in pixels.

By default, the horizontal shadow offset is 8 pixels.

See also: yOffset(), offset()

Properties	Class Methods
read	xOffset
write	setXOffset
notify	offsetChanged

QGraphicsDropShadowEffect::yOffset

This property holds the vertical shadow offset in pixels.

By default, the vertical shadow offset is 8 pixels.

See also: xOffset(), offset()

Properties	Class Methods
read	yOffset
write	setYOffset
notify	offsetChanged

Public Signals

Public Slots

Public Methods

Protected Methods

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Method Documentation

Property Documentation