PyQt5标签 – 访问阴影的模糊半径

在这篇文章中，我们将看到如何访问标签的阴影的模糊半径。模糊半径，如果设置为0，阴影就会很清晰，数字越大，就越模糊，默认模糊半径为0，我们使用setBlurRadius方法来设置模糊半径。

为了获取标签的阴影的模糊半径，我们使用blurRadius方法

语法： shadow.blurRadius(n)

这里shadow是QGraphicsDropShadowEffect对象。

参数： 它不需要参数

返回： 它返回浮点值

下面是实现方法

# 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 background color of window
        # self.setStyleSheet("background-color : black;")
  
        # 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 alignment
        label.setAlignment(Qt.AlignCenter)
  
        # setting geometry to the label
        label.setGeometry(200, 100, 150, 60)
  
        # setting border
        label.setStyleSheet("border : 8px solid black")
  
        # creating a QGraphicsDropShadowEffect object
        shadow = QGraphicsDropShadowEffect()
  
        # setting blur radius
        shadow.setBlurRadius(15)
  
        # adding shadow to the label
        label.setGraphicsEffect(shadow)
  
        # creating label to show the blur radius
        result = QLabel(self)
  
        # setting geometry
        result.setGeometry(200, 200, 200, 30)
  
        # getting blur radius
        b_radius = shadow.blurRadius()
  
        # showing text through label
        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 :

PyQt5标签 - 访问阴影的模糊半径