QGraphicsBlurEffect

The QGraphicsBlurEffect class provides a blur effect. More

Inheritance diagram of PySide2.QtWidgets.QGraphicsBlurEffect

New in version 4.6.

Synopsis

Functions

Slots

Signals

Detailed Description

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.

../../_images/graphicseffect-blur.png
class PySide2.QtWidgets.QGraphicsBlurEffect([parent=None])
param parent

PySide2.QtCore.QObject

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

PySide2.QtWidgets.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.

Constant

Description

QGraphicsBlurEffect.PerformanceHint

Indicates that rendering performance is the most important factor, at the potential cost of lower quality.

QGraphicsBlurEffect.QualityHint

Indicates that rendering quality is the most important factor, at the potential cost of lower performance.

QGraphicsBlurEffect.AnimationHint

Indicates that the blur radius is going to be animated, hinting that the implementation can keep a cache of blurred verisons of the source. Do not use this hint if the source is going to be dynamically changing.

PySide2.QtWidgets.QGraphicsBlurEffect.blurHints()
Return type

BlurHints

This property holds the blur hint of the effect..

Use the PerformanceHint hint to say that you want a faster blur, the QualityHint hint to say that you prefer a higher quality blur, or the AnimationHint when you want to animate the blur radius.

By default, the blur hint is PerformanceHint .

PySide2.QtWidgets.QGraphicsBlurEffect.blurHintsChanged(hints)
Parameters

hintsBlurHints

PySide2.QtWidgets.QGraphicsBlurEffect.blurRadius()
Return type

float

This property holds the blur radius of the effect..

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

By default, the blur radius is 5 pixels.

The radius is given in device coordinates, meaning it is unaffected by scale.

PySide2.QtWidgets.QGraphicsBlurEffect.blurRadiusChanged(blurRadius)
Parameters

blurRadius – float

PySide2.QtWidgets.QGraphicsBlurEffect.setBlurHints(hints)
Parameters

hintsBlurHints

This property holds the blur hint of the effect..

Use the PerformanceHint hint to say that you want a faster blur, the QualityHint hint to say that you prefer a higher quality blur, or the AnimationHint when you want to animate the blur radius.

By default, the blur hint is PerformanceHint .

PySide2.QtWidgets.QGraphicsBlurEffect.setBlurRadius(blurRadius)
Parameters

blurRadius – float

This property holds the blur radius of the effect..

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

By default, the blur radius is 5 pixels.

The radius is given in device coordinates, meaning it is unaffected by scale.