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Pyqt control part (II)

2022-07-03 04:29:00 【aijiayi00】

Catalog

result ：

1. The text selected in the next combo box is label Real time text display

2. The font selected in the font combo box can be changed label The font of the text

3. Use the group box to group radio buttons

4. Real time addition and deletion of tabs （ Achieved with buttons ）

5. The date and time control displays the local time （ But it won't change , It's not real time ）

6. Calendar control selects a date , The date will be output on the console

This time I learned some new controls , It is estimated that we will start learning next time PyQt5 Advanced controls for .

The controls for this learning are ：

ComboBox： Drop down combo box
FontComoBox： Font combo box
ListWidget： list
GroupBox： Group box
TabWidget： tab
Date and time controls ：DateTimeEdit、DateEdit、TimeEdit
CalendarWidget： calendar control

Of course, for controls , Just put it there , It can't achieve any function .

Use controls to achieve certain functions , You need to know what signal this control will emit , And let the signal be bound to a method .

And we just need to put the logical operations and ideas we want to perform , Just write it in the method .

Some common signals emitted by the above controls ：

ComboBox Control will emit currentIndexChanged（ Emit when the drop-down index changes ）
FontComboBox Controls and ComboBox be similar .
TabWidget Control will emit currentChanged The signal ( When switching tabs , launch )
The date and time control will emit three signals ：timeChanged、dateChanged、datetTimeChanged
Launch when time changes timeChanged The signal
Launch when the date changes dateChanged The signal
Launch when the time or date changes dateTimeChanged The signal
CalendarWidget Control will emit selectionChanged The signal
Launch when the date of election changes selectionChanged The signal

This study has achieved

1. The text selected in the next combo box is label Real time text display ,

2. The font selected in the font combo box can be changed label The font of the text ,

3. Use the group box to group radio buttons .

4. Real time addition and deletion of tabs （ Achieved with buttons ）,

5. The date and time control displays the local time （ But it won't change , It's not real time ）,

6. Calendar control selects a date , The date will be output on the console .

The console is print Output place .

Code up ：

label_2.py：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'label_2.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        #  Drop down combo box （ComboBox）
        self.comboBox = QtWidgets.QComboBox(self.centralwidget)
        self.comboBox.setGeometry(QtCore.QRect(10, 10, 80, 30))
        self.comboBox.setObjectName("comboBox")
        mid = ' nothing '
        list = [' Basketball ', ' football ', ' Table Tennis ', ' badminton ']
        self.comboBox.addItem(mid)      #  Add options to the combo box -- Add a single variable 
        self.comboBox.addItems(list)    #  Add options to the combo box -- Add all variables in the list 
        self.comboBox.currentIndexChanged.connect(self.showinfo_comboBox)   #  Change index , Send a signal , Execute the procedure in the method 

        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(10, 40, 210, 30))
        self.label.setObjectName("label")
        self.label.setText(" Your favorite sport is ：" + self.comboBox.currentText())

        #  Font combo box （FontComboBox）-- Mainly used to change the font of text 
        self.fontComboBox = QtWidgets.QFontComboBox(self.centralwidget)
        self.fontComboBox.setGeometry(QtCore.QRect(10, 70, 100, 30))
        self.fontComboBox.setObjectName("fontComboBox")
        self.fontComboBox.setFontFilters(QtWidgets.QFontComboBox.AllFonts)  #  Show all fonts in the combo box 
        self.fontComboBox.currentIndexChanged.connect(self.showinfo_comboBox)
        #  list (ListWidget)
        self.listWidget = QtWidgets.QListWidget(self.centralwidget)
        self.listWidget.setGeometry(QtCore.QRect(200, 0, 300, 200))
        self.listWidget.setObjectName("listWidget")
        self.listWidget.setViewMode(QtWidgets.QListView.ListMode)       #  Set to display data in a list 
        self.listWidget.setWordWrap(True)   #  Set to turn on auto wrap 
        self.listWidget.addItems(list)


        dict = {'1':' Basketball ','2':' football ','3':' badminton ','4':' Table Tennis ','5':' rugby '}     #  Add key value pairs from the dictionary to the list 
        from collections import OrderedDict     #  The dictionary is unordered by default , We can import this module 
        dict = OrderedDict(dict)                #  Make the dictionary into an ordered dictionary 
        for key, value in dict.items():
            self.item = QtWidgets.QListWidgetItem(self.listWidget)      #  Create a list item separately in the list ,
            self.item.setText(key+':'+value)                            #  So you can add values one by one 
            self.item.setToolTip(value)                                 #  Set prompts one by one 

        #  Group box （GroupBox）--  Child window control 
        self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox.setGeometry(QtCore.QRect(0, 100, 200, 100))
        self.groupBox.setObjectName("groupBox")
        self.groupBox.setTitle(' grouping 1')

        self.groupBox_2 = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox_2.setGeometry(QtCore.QRect(0, 200, 200, 100))
        self.groupBox_2.setObjectName("groupBox_2")
        self.groupBox_2.setTitle(' grouping 2')

        #  Radio button （RadioButton）-- Only one radio button in the same group can be selected 
        self.radioButton = QtWidgets.QRadioButton(self.groupBox)    #  If you want to put the control in the grouping box ,
        self.radioButton.setGeometry(QtCore.QRect(0, 0, 80, 50))    #  Directly set the parent window as a grouping box .
        self.radioButton.setObjectName("radioButton")
        self.radioButton.setText(" choice A")
        self.radioButton_2 = QtWidgets.QRadioButton(self.groupBox)
        self.radioButton_2.setGeometry(QtCore.QRect(80, 0, 80, 50))
        self.radioButton_2.setObjectName("radioButton_2")
        self.radioButton_2.setText(" choice B")

        self.radioButton_3 = QtWidgets.QRadioButton(self.groupBox_2)
        self.radioButton_3.setGeometry(QtCore.QRect(0, 0, 80, 50))
        self.radioButton_3.setObjectName("radioButton_3")
        self.radioButton_3.setText(" choice C")
        self.radioButton_4 = QtWidgets.QRadioButton(self.groupBox_2)
        self.radioButton_4.setGeometry(QtCore.QRect(80, 0, 80, 50))
        self.radioButton_4.setObjectName("radioButton_4")
        self.radioButton_4.setText(" choice D")

        #  tab （TabWidget）
        self.tabWidget = QtWidgets.QTabWidget(self.centralwidget)
        self.tabWidget.setGeometry(QtCore.QRect(0,400,400,150))
        self.tabWidget.setTabsClosable(True)
        #  The set button is used to add an option window 
        self.pushBotton = QtWidgets.QPushButton(self.centralwidget)
        self.pushBotton.setGeometry(QtCore.QRect(400, 400, 60, 30))
        self.pushBotton.setObjectName("pushBotton")
        self.pushBotton.setText(' add to ')
        self.pushBotton.clicked.connect(self.addtab)
        #  The set button is used to delete a window 
        self.pushBotton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushBotton_2.setGeometry(QtCore.QRect(400, 460, 60, 30))
        self.pushBotton_2.setObjectName("pushBotton_2")
        self.pushBotton_2.setText(' Delete ')
        self.pushBotton_2.clicked.connect(self.deltab)

        #  Date and time controls （DataTimeEdit）
        self.dateTimeEdit = QtWidgets.QDateTimeEdit(self.centralwidget)
        self.dateTimeEdit.setGeometry(QtCore.QRect(500, 200, 200, 30))
        self.dateTimeEdit.setObjectName("dateTimeEdit")
        self.dateTimeEdit.setDisplayFormat("yyyy-MM-dd HH:mm:ss")   #  Set the display form 
        self.dateTimeEdit.setCalendarPopup(True)        #  Setting can pop up the calendar 
        # self.dateTimeEdit.setTime(QtCore.QTime(1,59))         #  Set the time to 1：59
        self.dateTimeEdit.setDateTime(QtCore.QDateTime.currentDateTime())   #  Set the display to get the current date and time 
        print(self.dateTimeEdit.text())         #  String type 
        print(type(self.dateTimeEdit.text()))
        print(self.dateTimeEdit.dateTime())     # QDateTime type 

        #  calendar control （CalendarWidget）
        self.calendarWidget = QtWidgets.QCalendarWidget(self.centralwidget)
        self.calendarWidget.setGeometry(QtCore.QRect(480, 250, 310, 350))
        self.calendarWidget.setObjectName("calendarWidget")
        self.calendarWidget.setFirstDayOfWeek(QtCore.Qt.Monday)     #  Set the first day of the week as Monday 
        self.calendarWidget.setGridVisible(True)        #  Set gridlines visible 
        self.calendarWidget.setSelectionMode(QtWidgets.QCalendarWidget.SingleSelection) #  You can select a date 
        self.calendarWidget.setDateEditEnabled(True)        #  Set date can be edited 

        self.calendarWidget.selectionChanged.connect(self.getdate)  #  When the date of election changes , launch selectionChange The signal 





        MainWindow.setCentralWidget(self.centralwidget)


        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)

        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def showinfo_comboBox(self):
        #  Change the font -- Font combo box 
        print(self.fontComboBox.currentText())
        self.label.setFont(QtGui.QFont(self.fontComboBox.currentText()))
        #  According to the text -- Drop down the text in the combo box 
        self.label.setText(" Your favorite sport is ："+self.comboBox.currentText())

    def addtab(self):   #  Add Tab 
        self.atab = QtWidgets.QWidget()     #  Create tab objects 
        name = 'tab_'+str(self.tabWidget.count())
        self.atab.setObjectName(name)           #  Set its object name 
        self.tabWidget.addTab(self.atab, name)

    def deltab(self):   #  Delete tab 
        self.tabWidget.removeTab(self.tabWidget.currentIndex()) #  Remove the current tab 
        # self.tabWidget.currentIndex() ------  Get the index of the current tab -- from 0 Start adding one gradually 

    def getdate(self):
        date = QtCore.QDate(self.calendarWidget.selectedDate()) #  Get the... Of the currently selected date QDate object 
        #  obtain Qdate Year of object 、 month 、 Japan .
        year = date.year()
        month = date.month()
        day = date.day()
        print(' date ', end=':')
        print(year, month, day, sep='-')


    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

label_2_two.py

from label_2 import Ui_MainWindow
from PyQt5 import QtWidgets

if __name__ == '__main__':
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())