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PyQt5 QSpinBox – Getting height of font
  • Last Updated : 26 May, 2020

In this article we will see how we can get the height of the spin box’s font i.e its text. Height is the vertical length of the text. Height of font is always equal to ascent +descent +1 (the 1 is for the base line).

In order to do this we use height method with the spin box’s QFontMetrics object.

Syntax : font_metrics.height()

Argument : It takes no argument

Return : It returns integer.



Below is the implementation




# 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 spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting range to the spin box
        self.spin.setRange(0, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
        # creating a label
        label = QLabel(self)
  
        # making label multi line
        label.setWordWrap(True)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 300, 60)
  
        # getting font metrics
        f_metrics = self.spin.fontMetrics()
  
  
        # getting height of the font
        height = f_metrics.height()
  
        # setting text to the label
        label.setText("Height  : " + str(height))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

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