文章目录

本次使用PyQt5，打造一款时间管理工具，支持两种时间格式的显示、全屏、窗口的切换以及一些个性化的设置，可以用作计时器或者屏幕保护。

一．准备工作1.PyQt5

pyqt5是一套Python绑定Digia QT5应用的框架。它可用于Python 2和3。本教程使用Python 3。Qt库是最强大的GUI库之一。pyqt5的官方网站 。

pyqt5作为Python的一个模块，它有620多个类和6000个函数和方法。这是一个跨平台的工具包，它可以运行在所有主要的操作系统，包括UNIX，Windows，Mac OS。pyqt5是双重许可。开发者可以在GPL和商业许可之间进行选择。

2.Qt Designer

Qt设计师（Qt Designer）是使用Qt部件（Widgets）设计和使用图形用户界面（GUI）的工具。它允许我们以所见即所得的方式构建和定制自己的窗口（Windows）或对话框（Dialogs）并提供了不同的方法来测试它们。

二．预览

启动软件后，就会进入软件设置界面，通过选择时间显示格式、显示模式、颜色其他设置，可以预览要展示的时间。

点击开始后，就会进入软件主界面，软件会根据用户选择的模式和设置展示当前时间。

3.自定义样式

可以自定义日期时间显示样式

三．设计流程1.UI设计

1.my_time.ui

此为启动界面，整体垂直布局，局部水平布局。

2.my_timer.ui

此为主界面，整体水平布局。

四．源代码1.time_manger.py（主程序调用）

import sysfrom PyQt5.QtCore import *from PyQt5.QtWidgets import *from my_time import Ui_Set_Windowfrom my_timer import Ui_MainWindowclass My_Time(QDialog):    def __init__(self):        super().__init__()        self.ui=Ui_Set_Window()        self.ui.setupUi(self)        self.main_ui=mainwindow()        self.background_color_rgb_str="rgb(255, 255, 255)"#lcd背景颜色初始化        self.font_color_rgb_str="rgb(0, 0, 0)"#lcd字体颜色初始化        self.dateTimeFormat = "yyyy-MM-dd HH:mm:ss"#日期格式初始化        self.lcd_number = 19#lcd位数初始化        self.full_size_flag=1        self.ui.radioButton.toggled.connect(self.process_radiobtn)        self.ui.radioButton_2.toggled.connect(self.process_radiobtn2)        self.ui.radioButton_5.toggled.connect(self.process_radiobtn5)        self.ui.radioButton_6.toggled.connect(self.process_radiobtn6)        self.ui.pushButton_2.clicked.connect(self.select_background_color)        self.ui.pushButton.clicked.connect(self.select_font_color)        self.ui.pushButton_4.clicked.connect(self.start_timer)        current_time = QDateTime.currentDateTime().toString(self.dateTimeFormat)        self.ui.lcdNumber.display(current_time)        qss_str = """ border: 2px solid black; color: {background_color} ; background:{font_color};""".replace(            "{font_color}", self.font_color_rgb_str).replace(" {background_color}", self.background_color_rgb_str)        self.ui.lcdNumber.setStyleSheet(qss_str)    def process_radiobtn5(self):        if self.ui.radioButton_5.isChecked():            self.main_ui.full_size_flag = True        else:            self.main_ui.full_size_flag = False    def process_radiobtn6(self):        if self.ui.radioButton_6.isChecked():            self.main_ui.full_size_flag=False        else:            self.main_ui.full_size_flag=True    def process_radiobtn(self):        if self.ui.radioButton.isChecked():            self.dateTimeFormat = "yyyy-MM-dd HH:mm:ss"            self.lcd_number=19            current_time = QDateTime.currentDateTime().toString(self.dateTimeFormat)            self.ui.lcdNumber.display(current_time)    def process_radiobtn2(self):        if self.ui.radioButton_2.isChecked():            self.dateTimeFormat="HH:mm:ss"            self.lcd_number=8            current_time = QDateTime.currentDateTime().toString(self.dateTimeFormat)            self.ui.lcdNumber.display(current_time)    def select_background_color(self):        color=QColorDialog.getColor()        if color.isValid():            self.background_color_rgb_str=f"rgb({   color.red()},{   color.green()},{   color.blue()})"            qss_str = """ border: 2px solid black; color: {background_color} ; background:{font_color};""".replace(                "{font_color}", self.font_color_rgb_str).replace(" {background_color}", self.background_color_rgb_str)            self.ui.lcdNumber.setStyleSheet(qss_str)    def select_font_color(self):        color=QColorDialog.getColor()        if color.isValid():            self.font_color_rgb_str=f"rgb({   color.red()},{   color.green()},{   color.blue()})"            qss_str = """ border: 2px solid black; color: {background_color} ; background:{font_color};""".replace(                "{font_color}", self.font_color_rgb_str).replace(" {background_color}", self.background_color_rgb_str)            self.ui.lcdNumber.setStyleSheet(qss_str)    def start_timer(self,):        #窗口关闭，发射信号,启动主窗口        self.main_ui.set_lcd_number.emit(self.lcd_number)        self.main_ui.time_format.emit(self.dateTimeFormat)        qss_str=""" border: 2px solid black; color: {background_color} ; background:{font_color};""".replace("{font_color}",self.font_color_rgb_str).replace(" {background_color}",self.background_color_rgb_str)        self.main_ui.set_qss_single.emit(qss_str)        if self.ui.checkBox_2.isChecked():            self.main_ui.show_time_on_title_flag=True        else:            self.main_ui.show_time_on_title_flag=False        self.hide()        self.main_ui.show()        self.main_ui.start()    def closeEvent(self,event):        reply = QMessageBox.question(self, '关闭', "确定要退出吗？",                                     QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)        if reply == QMessageBox.Yes:            event.accept()        else:            event.ignore()class mainwindow(QMainWindow):    set_qss_single=pyqtSignal(str)    set_lcd_number=pyqtSignal(int)    time_format=pyqtSignal(str)    def __init__(self):        super().__init__()        self.ui=Ui_MainWindow()        self.ui.setupUi(self)        self.set_qss_single.connect(self.set_lcd_qss)        self.time_format.connect(self.set_time_format)        self.set_lcd_number.connect(self.set_lcd_number_)        self.show_time_on_title_flag=True        self.full_size_flag=True    def do_procress_full_size(self,flag):        if flag==True:            self.showFullScreen()#全屏幕        elif flag==False:            self.showNormal()#正常窗口化    def start(self):        self.timer = QTimer(self)        self.timer.setInterval(1000)        self.do_procress_full_size(self.full_size_flag)        self.timer.timeout.connect(self.show_current_time)        self.timer.start()    @pyqtSlot(str)    def set_lcd_qss(self,qss):        self.ui.lcdNumber.setStyleSheet(qss)    @pyqtSlot(int)    def set_lcd_number_(self,number):        self.lcd_number=number        self.ui.lcdNumber.setDigitCount(number)    @pyqtSlot(str)    def set_time_format(self,time_fmt):        self.time_fmt=time_fmt    def show_current_time(self):        if self.lcd_number==19:            current_time=QDateTime.currentDateTime().toString(self.time_fmt)        else:            current_time=QTime.currentTime().toString(self.time_fmt)        if self.show_time_on_title_flag:            self.setWindowTitle(current_time)        else:            self.setWindowTitle("时间管理")        self.ui.lcdNumber.display(current_time)    def closeEvent(self,event):        reply = QMessageBox.question(self, '关闭', "确定要退出吗？",                                     QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)        if reply == QMessageBox.Yes:            event.accept()            ui.show()            self.timer.stop()        else:            event.ignore()    def keyPressEvent(self, event):        if event.key() == Qt.Key_Escape:  # 当我们按住键盘是esc按键时            self.close()  # 关闭程序            ui.show()if __name__ == '__main__':    app=QApplication(sys.argv)    ui=My_Time()    ui.show()    sys.exit(app.exec_())

# -*- coding: utf-8 -*-from PyQt5 import QtCore, QtWidgetsclass Ui_Set_Window(object):    def setupUi(self, Dialog):        Dialog.setObjectName("Dialog")        Dialog.setEnabled(True)        Dialog.resize(461, 410)        self.verticalLayout_2 = QtWidgets.QVBoxLayout(Dialog)        self.verticalLayout_2.setObjectName("verticalLayout_2")        self.groupBox = QtWidgets.QGroupBox(Dialog)        self.groupBox.setObjectName("groupBox")        self.verticalLayout = QtWidgets.QVBoxLayout(self.groupBox)        self.verticalLayout.setObjectName("verticalLayout")        self.horizontalLayout = QtWidgets.QHBoxLayout()        self.horizontalLayout.setObjectName("horizontalLayout")        self.radioButton = QtWidgets.QRadioButton(self.groupBox)        self.radioButton.setChecked(True)        self.radioButton.setObjectName("radioButton")        self.horizontalLayout.addWidget(self.radioButton)        self.radioButton_2 = QtWidgets.QRadioButton(self.groupBox)        self.radioButton_2.setObjectName("radioButton_2")        self.horizontalLayout.addWidget(self.radioButton_2)        self.horizontalLayout.setStretch(0, 2)        self.horizontalLayout.setStretch(1, 1)        self.verticalLayout.addLayout(self.horizontalLayout)        self.verticalLayout_2.addWidget(self.groupBox)        self.groupBox_4 = QtWidgets.QGroupBox(Dialog)        self.groupBox_4.setObjectName("groupBox_4")        self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.groupBox_4)        self.verticalLayout_3.setObjectName("verticalLayout_3")        self.horizontalLayout_7 = QtWidgets.QHBoxLayout()        self.horizontalLayout_7.setObjectName("horizontalLayout_7")        self.radioButton_5 = QtWidgets.QRadioButton(self.groupBox_4)        self.radioButton_5.setChecked(True)        self.radioButton_5.setObjectName("radioButton_5")        self.horizontalLayout_7.addWidget(self.radioButton_5)        self.radioButton_6 = QtWidgets.QRadioButton(self.groupBox_4)        self.radioButton_6.setObjectName("radioButton_6")        self.horizontalLayout_7.addWidget(self.radioButton_6)        self.horizontalLayout_7.setStretch(0, 2)        self.horizontalLayout_7.setStretch(1, 1)        self.verticalLayout_3.addLayout(self.horizontalLayout_7)        self.verticalLayout_2.addWidget(self.groupBox_4)        self.groupBox_3 = QtWidgets.QGroupBox(Dialog)        self.groupBox_3.setObjectName("groupBox_3")        self.horizontalLayout_4 = QtWidgets.QHBoxLayout(self.groupBox_3)        self.horizontalLayout_4.setObjectName("horizontalLayout_4")        self.horizontalLayout_3 = QtWidgets.QHBoxLayout()        self.horizontalLayout_3.setObjectName("horizontalLayout_3")        self.pushButton_2 = QtWidgets.QPushButton(self.groupBox_3)        self.pushButton_2.setMinimumSize(QtCore.QSize(100, 0))        self.pushButton_2.setObjectName("pushButton_2")        self.horizontalLayout_3.addWidget(self.pushButton_2)        spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)        self.horizontalLayout_3.addItem(spacerItem)        self.pushButton = QtWidgets.QPushButton(self.groupBox_3)        self.pushButton.setMinimumSize(QtCore.QSize(100, 0))        self.pushButton.setObjectName("pushButton")        self.horizontalLayout_3.addWidget(self.pushButton)        spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)        self.horizontalLayout_3.addItem(spacerItem1)        self.checkBox_2 = QtWidgets.QCheckBox(self.groupBox_3)        self.checkBox_2.setChecked(True)        self.checkBox_2.setObjectName("checkBox_2")        self.horizontalLayout_3.addWidget(self.checkBox_2)        self.horizontalLayout_4.addLayout(self.horizontalLayout_3)        self.verticalLayout_2.addWidget(self.groupBox_3)        self.groupBox_2 = QtWidgets.QGroupBox(Dialog)        self.groupBox_2.setObjectName("groupBox_2")        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.groupBox_2)        self.horizontalLayout_2.setObjectName("horizontalLayout_2")        self.lcdNumber = QtWidgets.QLCDNumber(self.groupBox_2)        self.lcdNumber.setLayoutDirection(QtCore.Qt.LeftToRight)        self.lcdNumber.setFrameShape(QtWidgets.QFrame.NoFrame)        self.lcdNumber.setSmallDecimalPoint(True)        self.lcdNumber.setDigitCount(19)        self.lcdNumber.setSegmentStyle(QtWidgets.QLCDNumber.Filled)        self.lcdNumber.setProperty("value", 0.0)        self.lcdNumber.setProperty("intValue", 0)        self.lcdNumber.setObjectName("lcdNumber")        self.horizontalLayout_2.addWidget(self.lcdNumber)        self.horizontalLayout_2.setStretch(0, 10)        self.verticalLayout_2.addWidget(self.groupBox_2)        self.frame = QtWidgets.QFrame(Dialog)        self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)        self.frame.setFrameShadow(QtWidgets.QFrame.Raised)        self.frame.setObjectName("frame")        self.horizontalLayout_5 = QtWidgets.QHBoxLayout(self.frame)        self.horizontalLayout_5.setObjectName("horizontalLayout_5")        self.horizontalLayout_6 = QtWidgets.QHBoxLayout()        self.horizontalLayout_6.setObjectName("horizontalLayout_6")        self.pushButton_4 = QtWidgets.QPushButton(self.frame)        self.pushButton_4.setObjectName("pushButton_4")        self.horizontalLayout_6.addWidget(self.pushButton_4)        self.pushButton_5 = QtWidgets.QPushButton(self.frame)        self.pushButton_5.setObjectName("pushButton_5")        self.horizontalLayout_6.addWidget(self.pushButton_5)        self.horizontalLayout_5.addLayout(self.horizontalLayout_6)        self.verticalLayout_2.addWidget(self.frame)        self.retranslateUi(Dialog)        self.pushButton_5.clicked.connect(Dialog.close)        QtCore.QMetaObject.connectSlotsByName(Dialog)    def retranslateUi(self, Dialog):        _translate = QtCore.QCoreApplication.translate        Dialog.setWindowTitle(_translate("Dialog", "时间管理"))        self.groupBox.setTitle(_translate("Dialog", "时间显示格式"))        self.radioButton.setText(_translate("Dialog", "年:月：日 时:分:秒"))        self.radioButton_2.setText(_translate("Dialog", "时:分:秒"))        self.groupBox_4.setTitle(_translate("Dialog", "模式选择"))        self.radioButton_5.setText(_translate("Dialog", "全屏"))        self.radioButton_6.setText(_translate("Dialog", "窗口"))        self.groupBox_3.setTitle(_translate("Dialog", "颜色、其他设置"))        self.pushButton_2.setText(_translate("Dialog", "字体色"))        self.pushButton.setText(_translate("Dialog", "背景色"))        self.checkBox_2.setText(_translate("Dialog", "窗口标题为当前时间"))        self.groupBox_2.setTitle(_translate("Dialog", "预览"))        self.pushButton_4.setText(_translate("Dialog", "开始"))        self.pushButton_5.setText(_translate("Dialog", "退出"))

# -*- coding: utf-8 -*-from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object):    def setupUi(self, MainWindow):        MainWindow.setObjectName("MainWindow")        MainWindow.resize(574, 329)        self.centralwidget = QtWidgets.QWidget(MainWindow)        self.centralwidget.setObjectName("centralwidget")        self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)        self.verticalLayout.setObjectName("verticalLayout")        self.lcdNumber = QtWidgets.QLCDNumber(self.centralwidget)        self.lcdNumber.setSmallDecimalPoint(True)        self.lcdNumber.setDigitCount(8)        self.lcdNumber.setMode(QtWidgets.QLCDNumber.Dec)        self.lcdNumber.setProperty("value", 0.0)        self.lcdNumber.setObjectName("lcdNumber")        self.verticalLayout.addWidget(self.lcdNumber)        MainWindow.setCentralWidget(self.centralwidget)        self.retranslateUi(MainWindow)        QtCore.QMetaObject.connectSlotsByName(MainWindow)    def retranslateUi(self, MainWindow):        _translate = QtCore.QCoreApplication.translate        MainWindow.setWindowTitle(_translate("MainWindow", "时间管理"))

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