PyQt5 QSpinBox – 获取字体的紧缩边界矩形
在这篇文章中,我们将看到如何获得旋转盒子的字体即文本的紧密边界矩形。边界矩形总是至少覆盖文本在(0, 0)处绘制时将覆盖的像素。
注意: 换行符是作为普通字符处理的,而不是作为换行符。
为了做到这一点,我们使用tightBoundingRect方法和自旋盒的QFontMetrics对象。
语法: font_metrics.tightBoundingRect(text)
参数: 它使用字符串作为参数
返回: 它返回QRect对象。
下面是实现方法
# 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 strike out to the font
font = self.spin.font()
font.setStrikeOut(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()
# text
text = self.spin.text()
# getting the tight bounding rectangle
value = f_metrics.tightBoundingRect(text)
# setting text to the label
label.setText("Tight Rectangle : " + str(value))
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())
输出 :