PyQt5 QLabel - 访问模糊效果的模糊半径

在本文中，我们将了解如何访问标签模糊效果的模糊半径。模糊半径（必需），如果设置为 0，阴影会很锐利，数字越大，越模糊。默认情况下，模糊半径值为 5.0，我们可以随时更改它。
为了做到这一点，我们使用 blurRadius 方法。

Syntax : blur_effect.blurRadius()
Here blur_effect is the QGraphicsBlurEffect object
Argument : It takes no argument
Return : It returns float value

编程需要懂一点英语

下面是实现

Python3

# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
 
 
class Window(QMainWindow):
 
    def __init__(self):
        super().__init__()
 
        # setting title
        self.setWindowTitle("Python ")
 
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
    # method for widgets
    def UiComponents(self):
 
        # creating label
        label = QLabel("Label", self)
 
        # setting geometry to the label
        label.setGeometry(200, 100, 150, 60)
 
        # setting alignment to the label
        label.setAlignment(Qt.AlignCenter)
 
        # setting font
        label.setFont(QFont('Arial', 15))
 
        # setting style sheet of the label
        label.setStyleSheet("QLabel"
                            "{"
                            "border : 2px solid green;"
                            "background : lightgreen;"
                            "}")
 
        # creating a blur effect
        self.blur_effect = QGraphicsBlurEffect()
 
        # setting blur radius
        self.blur_effect.setBlurRadius(15)
 
        # adding blur effect to the label
        label.setGraphicsEffect(self.blur_effect)
 
        # creating a result label
        result = QLabel(self)
 
        # setting geometry to the result
        result.setGeometry(200, 200, 300, 30)
 
        # getting blur radius
        b_radius = self.blur_effect.blurRadius()
 
        # setting text to the result
        result.setText("Blur radius = " + str(b_radius))
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出：