While designing a GUI (Graphical User Interface) application we tend to make lot of labels, but sometimes some labels overlaps each other and only label which is on top is visible, that’s why semi transparent label is needed.
Normal label vs Semi-transparent label –
In order to create semi-transparent labels setStyleSheet() method is used.
Syntax : label.setStyleSheet(“background-color: rgba(255, 255, 255, 10);”)
Here we are setting color usingRGBAi.e transparency factor, 255 is completely opaque, and an alpha of 0 is completely transparent.Argument: It takes string as argument.
Action performed : It makes the color of the label transparent.
Code :
# importing the required libraries from PyQt5.QtWidgets import * from PyQt5.QtGui import * import sys class Window(QMainWindow): def __init__(self): super().__init__() # set the title self.setWindowTitle("Label") # setting the geometry of window self.setGeometry(0, 0, 400, 300) # creating a label widget # by default label will display at top left corner self.label_1 = QLabel('back', self) # moving position self.label_1.move(100, 100) # setting up border and background color self.label_1.setStyleSheet("background-color: lightgreen; border: 3px solid green") # creating a label widget # by default label will display at top left corner self.label_2 = QLabel('front', self) # moving position self.label_2.move(140, 100) # setting up border and background # color with transparency factor self.label_2.setStyleSheet("border: 3px solid blue; background-color: rgba(0, 255, 255, 90);") # show all the widgets self.show() # create pyqt5 app App = QApplication(sys.argv) # create the instance of our Window window = Window() # start the app sys.exit(App.exec()) |
Output :
