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PyQt5 QSpinBox – Getting over line position
  • Last Updated : 28 May, 2020
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In this article we will see how we can get over line position of the spin box’s text. Over line position is the distance from the base line to where an over line should be drawn. An over line, overs core, or over bar, is a typographical feature of a horizontal line drawn immediately above the text. In mathematical notation, an over line has been used for a long time as a vinculum, a way of showing that certain symbols belong together.

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

Syntax : font_metrics.overlinePos()

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(1, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
        # setting over line to the font
        font = self.spin.font()
        font.setOverline(True)
        self.spin.setFont(font)
  
        # 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 over line position
        value = f_metrics.overlinePos()
  
        # setting text to the label
        label.setText("Distance b / w base and over line : " + str(value))
  
  
# 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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