QGraphicsBlurEffect只对父窗口部件 [英] QGraphicsBlurEffect on parent widget only

问题描述

我想尝试在另一个顶部显示一个小部件，并仅在父项上应用 QGraphicsBlurEffect

  MyWidget :: MyWidget（QWidget * parent）：
 QWidget（parent），
 {
 QGraphicsBlurEffect * effect = new QGraphicsBlurEffect（this）; 
 parent-> setGraphicsEffect（effect）; 
} 
  

但结果是两个部件都模糊。

$ b $

如何对父母只应用模糊效果？

解决方案

您最好的选择是打破父子关系。没有 QGraphicsEffects 的的 ItemIgnoresParentOpacity 的标志。

另一个解决方案是复制ItemIgnoresParentOpacity机制并实现它为QGraphicsEffect，但我不认为这是值得的麻烦。

I'm trying to show a widget on top of another and apply the QGraphicsBlurEffect only on the parent like this

MyWidget::MyWidget(QWidget* parent) :
QWidget(parent),
{
    QGraphicsBlurEffect* effect = new QGraphicsBlurEffect(this);
    parent->setGraphicsEffect(effect);
}

But the result is both widget are blur.

It seams like the effect is propagated to the childrens.

How can I apply the blur effect on the parent only?

解决方案

Your best option would be to break the parent-child relationship. There's no flags like QGraphicsItem's ItemIgnoresParentOpacity for QGraphicsEffects.

Another solution would be to copy the ItemIgnoresParentOpacity mechanism and implement it for QGraphicsEffect, but I don't think it's worth the trouble.

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