QGraphicsBlurEffect

Note

This class was introduced in Qt 4.6

Synopsis

Functions

Slots

Signals

Detailed Description

The PySide.QtGui.QGraphicsBlurEffect class provides a blur effect.

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 PySide.QtGui.QGraphicsBlurEffect.setBlurRadius() function. Use PySide.QtGui.QGraphicsBlurEffect.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 PySide.QtGui.QGraphicsBlurEffect([parent=None])
Parameters:parentPySide.QtCore.QObject

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

PySide.QtGui.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.
PySide.QtGui.QGraphicsBlurEffect.blurHints()
Return type:PySide.QtGui.QGraphicsBlurEffect.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 .

PySide.QtGui.QGraphicsBlurEffect.blurHintsChanged(hints)
Parameters:hintsPySide.QtGui.QGraphicsBlurEffect.BlurHints
PySide.QtGui.QGraphicsBlurEffect.blurRadius()
Return type:PySide.QtCore.qreal

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.

PySide.QtGui.QGraphicsBlurEffect.blurRadiusChanged(blurRadius)
Parameters:blurRadiusPySide.QtCore.qreal
PySide.QtGui.QGraphicsBlurEffect.setBlurHints(hints)
Parameters:hintsPySide.QtGui.QGraphicsBlurEffect.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 .

PySide.QtGui.QGraphicsBlurEffect.setBlurRadius(blurRadius)
Parameters:blurRadiusPySide.QtCore.qreal

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.