The QPixmapFilter class provides the basic functionality for pixmap filter classes. Pixmap filter can be for example colorize or blur. More...

#include <qpixmapfilter_p.h>

Inheritance diagram for QPixmapFilter:

[legend]

Collaboration diagram for QPixmapFilter:

[legend]

Public Types
enum	FilterType { ConvolutionFilter , ColorizeFilter , DropShadowFilter , BlurFilter , UserFilter = 1024 }

Public Member Functions
virtual	~QPixmapFilter ()=0

FilterType	type () const

virtual QRectF	boundingRectFor (const QRectF &rect) const

virtual void	draw (QPainter *painter, const QPointF &p, const QPixmap &src, const QRectF &srcRect=QRectF()) const =0

Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)

virtual	~QObject ()

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

QString	objectName () const

void	setObjectName (const QString &name)

QBindable< QString >	bindableObjectName ()

bool	isWidgetType () const

bool	isWindowType () const

bool	signalsBlocked () const noexcept

bool	blockSignals (bool b) noexcept

QThread *	thread () const

void	moveToThread (QThread *thread)

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

void	killTimer (int id)

template<typename T >
T	findChild (const QString &aName=QString(), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

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

template<typename T >
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

const QObjectList &	children () const

void	setParent (QObject *parent)

void	installEventFilter (QObject *filterObj)

void	removeEventFilter (QObject *obj)

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

void	dumpObjectInfo () const

bool	setProperty (const char *name, const QVariant &value)

QVariant	property (const char *name) const

QList< QByteArray >	dynamicPropertyNames () const

QBindingStorage *	bindingStorage ()

const QBindingStorage *	bindingStorage () const

QObject *	parent () const

bool	inherits (const char *classname) const

Protected Member Functions
	QPixmapFilter (QPixmapFilterPrivate &d, FilterType type, QObject *parent)

	QPixmapFilter (FilterType type, QObject *parent)

Protected Member Functions inherited from QObject
QObject *	sender () const

int	senderSignalIndex () const

int	receivers (const char *signal) const

bool	isSignalConnected (const QMetaMethod &signal) const

virtual void	timerEvent (QTimerEvent *event)

virtual void	childEvent (QChildEvent *event)

virtual void	customEvent (QEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()

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

void	objectNameChanged (const QString &objectName, QPrivateSignal)

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)

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::FunctionPointer< Func2 >::Object receiver, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

static QMetaObject::Connection ::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot)

static QMetaObject::Connection ::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

template<typename Func1 , typename Func2 >
static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 slot)

template<typename Func1 , typename Func2 >
static std::enable_if< QtPrivate::FunctionPointer< Func2 >::ArgumentCount==-1 &&!std::is_convertible_v< Func2, const char * >, QMetaObject::Connection >::type	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject context, Func2 slot, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static bool	disconnect (const QMetaObject::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 Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Properties inherited from QObject
QString	objectName
	the name of this object More...

Related Functions inherited from QObject
template< class T > T	qobject_cast (const QObject *object)

template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

	QObjectList

Detailed Description

The QPixmapFilter class provides the basic functionality for pixmap filter classes. Pixmap filter can be for example colorize or blur.

Since: 4.5

QPixmapFilter is the base class for every pixmap filter. QPixmapFilter is an abstract class and cannot itself be instantiated. It provides a standard interface for filter processing.

Definition at line 68 of file qpixmapfilter_p.h.

Member Enumeration Documentation

◆ FilterType

enum QPixmapFilter::FilterType

Enumerator
ConvolutionFilter
ColorizeFilter
DropShadowFilter
BlurFilter
UserFilter

Definition at line 75 of file qpixmapfilter_p.h.

Constructor & Destructor Documentation

◆ ~QPixmapFilter()

QPixmapFilter::~QPixmapFilter ( )

pure virtual

Destroys the pixmap filter.

Definition at line 139 of file qpixmapfilter.cpp.

◆ QPixmapFilter() [1/2]

QPixmapFilter::QPixmapFilter	(	QPixmapFilterPrivate &	d,
		QPixmapFilter::FilterType	type,
		QObject *	parent
	)

protected

Definition at line 127 of file qpixmapfilter.cpp.

Here is the call graph for this function:

◆ QPixmapFilter() [2/2]

QPixmapFilter::QPixmapFilter	(	FilterType	type,
		QObject *	parent
	)

protected

Constructs a default QPixmapFilter with the given type.

This constructor should be used when subclassing QPixmapFilter to create custom user filters.

Definition at line 116 of file qpixmapfilter.cpp.

Here is the call graph for this function:

Member Function Documentation

◆ boundingRectFor()

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

virtual

Returns the bounding rectangle that is affected by the pixmap filter if the filter is applied to the specified rect.

Reimplemented in QPixmapDropShadowFilter, QPixmapBlurFilter, and QPixmapConvolutionFilter.

Definition at line 161 of file qpixmapfilter.cpp.

◆ draw()

void QPixmapFilter::draw	(	QPainter *	painter,
		const QPointF &	p,
		const QPixmap &	src,
		const QRectF &	srcRect = `QRectF()`
	)		const

pure virtual

Uses painter to draw filtered result of src at the point specified by p. If srcRect is specified the it will be used as a source rectangle to only draw a part of the source.

draw() will affect the area which boundingRectFor() returns.

Implemented in QPixmapColorizeFilter, QPixmapBlurFilter, QPixmapConvolutionFilter, CustomFilter, and QPixmapDropShadowFilter.

◆ type()

QPixmapFilter::FilterType QPixmapFilter::type ( ) const

Returns the type of the filter. All standard pixmap filter classes are associated with a unique value.

Definition at line 149 of file qpixmapfilter.cpp.

Here is the caller graph for this function:

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

src/widgets/effects/qpixmapfilter_p.h
src/widgets/effects/qpixmapfilter.cpp

Public Types

Public Member Functions

Protected Member Functions

Additional Inherited Members