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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 Slots | Signals | Public Member Functions | Protected Member Functions | Properties | List of all members
QGraphicsColorizeEffect Class Reference

The QGraphicsColorizeEffect class provides a colorize effect. More...

#include <qgraphicseffect.h>

+ Inheritance diagram for QGraphicsColorizeEffect:
+ Collaboration diagram for QGraphicsColorizeEffect:

Public Slots

void setColor (const QColor &c)
 
void setStrength (qreal strength)
 
- Public Slots inherited from QGraphicsEffect
void setEnabled (bool enable)
 
void update ()
 Schedules a redraw of the effect.
 
- Public Slots inherited from QObject
void deleteLater ()
 \threadsafe
 

Signals

void colorChanged (const QColor &color)
 This signal is emitted whenever the effect's color changes.
 
void strengthChanged (qreal strength)
 This signal is emitted whenever setStrength() changes the colorize strength property.
 
- Signals inherited from QGraphicsEffect
void enabledChanged (bool enabled)
 This signal is emitted whenever the effect is enabled or disabled.
 
- 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

 QGraphicsColorizeEffect (QObject *parent=nullptr)
 Constructs a new QGraphicsColorizeEffect instance.
 
 ~QGraphicsColorizeEffect ()
 Destroys the effect.
 
QColor color () const
 
qreal strength () const
 
- Public Member Functions inherited from QGraphicsEffect
 QGraphicsEffect (QObject *parent=nullptr)
 Constructs a new QGraphicsEffect instance having the specified parent.
 
virtual ~QGraphicsEffect ()
 Removes the effect from the source, and destroys the graphics effect.
 
virtual QRectF boundingRectFor (const QRectF &sourceRect) const
 Returns the effective bounding rectangle for this effect, given the provided rect in the device coordinates.
 
QRectF boundingRect () const
 Returns the effective bounding rectangle for this effect, i.e., the bounding rectangle of the source in device coordinates, adjusted by any margins applied by the effect itself.
 
bool isEnabled () const
 
QGraphicsEffectSource * source () const
 
- 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.
 

Protected Member Functions

void draw (QPainter *painter) override
 \reimp
 
- Protected Member Functions inherited from QGraphicsEffect
 QGraphicsEffect (QGraphicsEffectPrivate &d, QObject *parent=nullptr)
 
virtual void sourceChanged (ChangeFlags flags)
 This virtual function is called by QGraphicsEffect to notify the effect that the source has changed.
 
void updateBoundingRect ()
 This function notifies the effect framework when the effect's bounding rectangle has changed.
 
bool sourceIsPixmap () const
 Returns true if the source effectively is a pixmap, e.g., a QGraphicsPixmapItem.
 
QRectF sourceBoundingRect (Qt::CoordinateSystem system=Qt::LogicalCoordinates) const
 Returns the bounding rectangle of the source mapped to the given system.
 
void drawSource (QPainter *painter)
 Draws the source directly using the given painter.
 
QPixmap sourcePixmap (Qt::CoordinateSystem system=Qt::LogicalCoordinates, QPoint *offset=nullptr, PixmapPadMode mode=PadToEffectiveBoundingRect) const
 Returns a pixmap with the source painted into it.
 
- 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)
 

Properties

QColor color
 the color of the effect.
 
qreal strength
 the strength of the effect.
 
- Properties inherited from QGraphicsEffect
bool enabled
 whether the effect is enabled or not.
 
- Properties inherited from QObject
QString objectName
 the name of this object
 

Additional Inherited Members

- Public Types inherited from QGraphicsEffect
enum  ChangeFlag { SourceAttached = 0x1 , SourceDetached = 0x2 , SourceBoundingRectChanged = 0x4 , SourceInvalidated = 0x8 }
 This enum describes what has changed in QGraphicsEffectSource. More...
 
enum  PixmapPadMode { NoPad , PadToTransparentBorder , PadToEffectiveBoundingRect }
 This enum describes how the pixmap returned from sourcePixmap should be padded. More...
 
- 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 Attributes inherited from QObject
QScopedPointer< QObjectData > d_ptr
 
- 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

The QGraphicsColorizeEffect class provides a colorize effect.

Since
4.6 \inmodule QtWidgets

A colorize effect renders the source with a tint of its color(). The color can be modified using the setColor() function.

By default, the color is light blue (QColor(0, 0, 192)).

See also
QGraphicsDropShadowEffect, QGraphicsBlurEffect, QGraphicsOpacityEffect

Definition at line 90 of file qgraphicseffect.h.

Constructor & Destructor Documentation

◆ QGraphicsColorizeEffect()

QGraphicsColorizeEffect::QGraphicsColorizeEffect ( QObject * parent = nullptr)

Constructs a new QGraphicsColorizeEffect instance.

The parent parameter is passed to QGraphicsEffect's constructor.

Definition at line 577 of file qgraphicseffect.cpp.

◆ ~QGraphicsColorizeEffect()

QGraphicsColorizeEffect::~QGraphicsColorizeEffect ( )

Destroys the effect.

Definition at line 585 of file qgraphicseffect.cpp.

Member Function Documentation

◆ color()

QColor QGraphicsColorizeEffect::color ( ) const

Definition at line 595 of file qgraphicseffect.cpp.

References d.

◆ colorChanged

void QGraphicsColorizeEffect::colorChanged ( const QColor & color)
signal

This signal is emitted whenever the effect's color changes.

The color parameter holds the effect's new color.

◆ draw()

void QGraphicsColorizeEffect::draw ( QPainter * painter)
overrideprotectedvirtual

\reimp

Implements QGraphicsEffect.

Definition at line 653 of file qgraphicseffect.cpp.

References d, Qt::DeviceCoordinates, QGraphicsEffect::drawSource(), Qt::LogicalCoordinates, QGraphicsEffect::NoPad, painter, pixmap, QPainter::setWorldTransform(), QGraphicsEffect::sourceIsPixmap(), QGraphicsEffect::sourcePixmap(), and QPainter::worldTransform().

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◆ setColor

void QGraphicsColorizeEffect::setColor ( const QColor & c)
slot

Definition at line 601 of file qgraphicseffect.cpp.

References colorChanged(), d, emit, and QGraphicsEffect::update().

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◆ setStrength

void QGraphicsColorizeEffect::setStrength ( qreal strength)
slot

Definition at line 625 of file qgraphicseffect.cpp.

References d, emit, qFuzzyCompare(), qFuzzyIsNull(), strength, strengthChanged(), and QGraphicsEffect::update().

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◆ strength()

qreal QGraphicsColorizeEffect::strength ( ) const

Definition at line 619 of file qgraphicseffect.cpp.

References d.

◆ strengthChanged

void QGraphicsColorizeEffect::strengthChanged ( qreal strength)
signal

This signal is emitted whenever setStrength() changes the colorize strength property.

strength contains the new strength value of the colorize effect.

Referenced by setStrength().

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Property Documentation

◆ color

QGraphicsColorizeEffect::color
readwrite

the color of the effect.

By default, the color is light blue (QColor(0, 0, 192)).

Definition at line 93 of file qgraphicseffect.h.

◆ strength

QGraphicsColorizeEffect::strength
readwrite

the strength of the effect.

By default, the strength is 1.0. A strength 0.0 equals to no effect, while 1.0 means full colorization.

Definition at line 94 of file qgraphicseffect.h.

Referenced by setStrength().

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