PyQt5 QCalendarWidget 将坐标系映射为日历坐标系

在这篇文章中，我们将看到我们如何映射QCalendarWidget的坐标系。为了做到这一点，我们使用mapFrom方法，这个方法将日历坐标位置从父对象的坐标系统转换到这个小部件的坐标系统。父类必须不是无，而且必须是调用小部件的父类。

为了做到这一点，我们将使用mapFrom方法和QCalendarWidget对象。
语法： calendar.mapFrom(parent, point)

参数： 它需要QWidget对象作为父对象，QPoint对象作为参数
返回： 它返回QPoint对象

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

# QCalendarWidget Class
class Calendar(QCalendarWidget):

    # constructor
    def __init__(self, parent = None):
        super(Calendar, self).__init__(parent)


class Window(QMainWindow):

    def __init__(self):
        super().__init__()

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 650, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()

    # method for components
    def UiComponents(self):

        # creating a QCalendarWidget object
        # as Calendar class inherits QCalendarWidget
        self.calendar = Calendar(self)

        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 400, 250)

        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)

        # creating label to show the properties
        self.label = QLabel(self)

        # setting geometry to the label
        self.label.setGeometry(100, 280, 250, 60)

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

        # mapping to widget co-ordinate system
        value = self.calendar.mapFrom(self, QPoint(50, 10))

        # setting text to the label
        self.label.setText("Mapped Point : " + str(value))



# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())