PyQt5标签 – 访问颜色效果的强度
在这篇文章中,我们将看到如何访问标签的颜色效果的强度,默认情况下,标签没有颜色效果,尽管我们可以为标签创建颜色效果。颜色效果不像背景色,它更像我们在图片上使用的彩色滤镜。强度是指颜色效果的强度。
为了做到这一点,我们使用强度方法。
语法: color_effect.strength()
这里color_effect是QGraphicsColorizeEffect对象。
参数: 它不需要参数
返回: 它返回浮点值
注意: 强度值的范围是0到1.0。
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__()
# making background color light yellow
self.setStyleSheet("background : lightyellow;")
# 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))
# creating a color effect
color_effect = QGraphicsColorizeEffect()
# setting color to color effect
color_effect.setColor(Qt.darkRed)
# setting strength
color_effect.setStrength(0.5)
# adding color effect to the label
label.setGraphicsEffect(color_effect)
# creating result label
result = QLabel(self)
# setting geometry to the result
result.setGeometry(200, 200, 300, 30)
# getting the strength
strength = color_effect.strength()
# setting text to result label
result.setText("Color : " + str(strength))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :