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QGraphicsBlurEffect Class Reference
^{[QtGui module]}

The QGraphicsBlurEffect class provides a blur effect. More...

Inherits QGraphicsEffect.

Types

• enum BlurHint { PerformanceHint, QualityHint, AnimationHint }
• class BlurHints

Methods

• __init__ (self, QObject parent = None)
• BlurHints blurHints (self)
• float blurRadius (self)
• QRectF boundingRectFor (self, QRectF rect)
• draw (self, QPainter painter)
• setBlurHints (self, BlurHints hints)
• setBlurRadius (self, float blurRadius)

Qt Signals

• void blurHintsChanged (QGraphicsBlurEffect::BlurHints)
• void blurRadiusChanged (qreal)

A blur effect blurs the source. This effect is useful for reducing details, such as when the source loses focus and you want to draw attention to other elements. The level of detail can be modified using the setBlurRadius() function. Use setBlurHints() to choose the blur hints.

By default, the blur radius is 5 pixels. The blur radius is specified in device coordinates.

Type Documentation

QGraphicsBlurEffect.BlurHint

This enum describes the possible hints that can be used to control how blur effects are applied. The hints might not have an effect in all the paint engines.

The BlurHints type is a typedef for QFlags<BlurHint>. It stores an OR combination of BlurHint values.

See also blurHints() and setBlurHints().

Method Documentation

QGraphicsBlurEffect.__init__ (self, QObject parent = None)

The parent argument, if not None, causes self to be owned by Qt instead of PyQt.

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

BlurHints QGraphicsBlurEffect.blurHints (self)

float QGraphicsBlurEffect.blurRadius (self)

QRectF QGraphicsBlurEffect.boundingRectFor (self, QRectF rect)

Reimplemented from QGraphicsEffect.boundingRectFor().

QGraphicsBlurEffect.draw (self, QPainter painter)

Reimplemented from QGraphicsEffect.draw().

QGraphicsBlurEffect.setBlurHints (self, BlurHints hints)

This method is also a Qt slot with the C++ signature void setBlurHints(QGraphicsBlurEffect::BlurHints).

QGraphicsBlurEffect.setBlurRadius (self, float blurRadius)

This method is also a Qt slot with the C++ signature void setBlurRadius(qreal).

Qt Signal Documentation

void blurHintsChanged (QGraphicsBlurEffect::BlurHints)

This is the default overload of this signal.

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

void blurRadiusChanged (qreal)

This is the default overload of this signal.

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