PyQt5 - Scrollable Label - GeeksforGeeks

12 May, 2021
In this article we will see how we can create a scroll-able label, by default when we create a label all the text is in the single line and if length of text is greater than label, extra text didn’t show, although with the help of setWordWrap method we can create a multi-line label but still if the text exceeds it will not show in the label.In order to show whole text in a small label we have to make label scroll-able, in order to do this we have to make our own scrollable label class which inherits the QScrollArea class which allow to us to make label scroll-able, below is how scroll-able label looks like 
 
In order to do this we have to do the following –1. Create a new class which inherits QScrollArea 2. Inside the class create vertical layout 3. Create a label 4. Make the label multi-line 5. Over-ride the setText method for label 6. Creating object of this class inside the main window class and setting text to it  
Scroll Label class syntax  
class ScrollLabel(QScrollArea):

    # constructor
    def __init__(self, *args, **kwargs):
        QScrollArea.__init__(self, *args, **kwargs)

        # making widget resizable
        self.setWidgetResizable(True)

        # making qwidget object
        content = QWidget(self)
        self.setWidget(content)

        # vertical box layout
        lay = QVBoxLayout(content)

        # creating label
        self.label = QLabel(content)

        # setting alignment to the text
        self.label.setAlignment(Qt.AlignLeft | Qt.AlignTop)

        # making label multi-line
        self.label.setWordWrap(True)

        # adding label to the layout
        lay.addWidget(self.label)

    # the setText method
    def setText(self, text):
        # setting text to the label
        self.label.setText(text)
Below is the implementation  
Python3
# importing librariesfrom PyQt5.QtWidgets import *from PyQt5 import QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtCore import *import sys  # class for scrollable labelclass ScrollLabel(QScrollArea):     # constructor    def __init__(self, *args, **kwargs):        QScrollArea.__init__(self, *args, **kwargs)         # making widget resizable        self.setWidgetResizable(True)         # making qwidget object        content = QWidget(self)        self.setWidget(content)         # vertical box layout        lay = QVBoxLayout(content)         # creating label        self.label = QLabel(content)         # setting alignment to the text        self.label.setAlignment(Qt.AlignLeft | Qt.AlignTop)         # making label multi-line        self.label.setWordWrap(True)         # adding label to the layout        lay.addWidget(self.label)     # the setText method    def setText(self, text):        # setting text to the label        self.label.setText(text) 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):        # text to show in label        text = "There are so many options provided by Python to develop GUI " \               "application and PyQt5 is one of them. PyQt5 is cross-platform " \               "GUI toolkit, a set of python bindings for Qt v5. One can develop" \               " an interactive desktop application with so much ease because " \               "of the tools and simplicity provided by this library.A GUI application" \               " consists of Front-end and Back-end. PyQt5 has provided a tool called " \               "‘QtDesigner’ to design the front-end by drag and drop method so that " \               "development can become faster and one can give more time on back-end stuff. "         # creating scroll label        label = ScrollLabel(self)         # setting text to the label        label.setText(text)         # setting geometry        label.setGeometry(100, 100, 200, 80)   # create pyqt5 appApp = QApplication(sys.argv) # create the instance of our Windowwindow = Window() window.show() # start the appsys.exit(App.exec())
Output :  
 
arorakashish0911
Python PyQt5-Label
Python-gui
Python-PyQt
Python
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