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QGraphicsColorizeEffect Class

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

Header: #include <QGraphicsColorizeEffect>
qmake: QT += widgets
Since: Qt 4.6
Inherits: QGraphicsEffect


Public Functions

QGraphicsColorizeEffect(QObject *parent = nullptr)
virtual ~QGraphicsColorizeEffect()
QColor color() const
qreal strength() const

Public Slots

void setColor(const QColor &c)
void setStrength(qreal strength)


void colorChanged(const QColor &color)
void strengthChanged(qreal strength)

Reimplemented Protected Functions

virtual void draw(QPainter *painter) override

Additional Inherited Members

  • 1 public variable inherited from QObject
  • 10 static public members inherited from QObject
  • 7 protected functions inherited from QGraphicsEffect
  • 9 protected functions inherited from QObject
  • 2 protected variables inherited from QObject

Detailed Description

The QGraphicsColorizeEffect class provides a colorize effect.

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, and QGraphicsOpacityEffect.

Property Documentation

color : QColor

This property holds the color of the effect.

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

Access functions:

QColor color() const
void setColor(const QColor &c)

Notifier signal:

void colorChanged(const QColor &color)

strength : qreal

This property holds 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.

Access functions:

qreal strength() const
void setStrength(qreal strength)

Notifier signal:

void strengthChanged(qreal strength)

Member Function Documentation

QGraphicsColorizeEffect::QGraphicsColorizeEffect(QObject *parent = nullptr)

Constructs a new QGraphicsColorizeEffect instance. The parent parameter is passed to QGraphicsEffect's constructor.

[virtual] QGraphicsColorizeEffect::~QGraphicsColorizeEffect()

Destroys the effect.

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

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

Note: Notifier signal for property color.

[override virtual protected] void QGraphicsColorizeEffect::draw(QPainter *painter)

Reimplemented from QGraphicsEffect::draw().

[signal] void QGraphicsColorizeEffect::strengthChanged(qreal strength)

This signal is emitted whenever setStrength() changes the colorize strength property. strength contains the new strength value of the colorize effect.

Note: Notifier signal for property strength.

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