📜  PyQt5 QSpinBox – 获取字体的上升

📅  最后修改于: 2022-05-13 01:54:37.416000             🧑  作者: Mango

PyQt5 QSpinBox – 获取字体的上升

在本文中,我们将看到如何获得旋转框字体的上升,即文本。字体的上升是从基线到字符延伸到的最高位置的距离。在实践中,一些字体设计者打破了这个规则,例如当他们在一个字符的顶部放置多个重音,或者在异国语言中容纳一个不寻常的字符时,所以这个值可能(尽管很少见)太小了.

为了做到这一点,我们使用带有旋转框的 QFontMetrics 对象的ascent方法。

下面是实现

# 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 ascent
        ascent = f_metrics.ascent()
  
        # setting text to the label
        label.setText("Ascent : " + str(ascent))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 :