Implement the system desktop clock using Python

A system desktop clock written using Python + PyQT. I just learned Python, but it is relatively simple to write, but the basic functions are also acceptable.

Function:

① The form is at the top of the application, but the time is not visible after other applications are opened.

② Double-click full screen with the left button to enable small screen saver. Double-click again to exit full screen.

③ System Tray Icon. For more information, see PyQt4 \ examples \ desktop \ Program Ray in the PyQt4 source code directory.

④ Right-click the program and minimize it

During use, heart. svg needs to be placed in the directory of the same source code level. [the file can be found in PyQt4 \ examples \ desktop \ mongoray \ images under the PyQt4 sample code directory.

Python2.7 + PyQt4.

__metaclass__ = type#!coding= utf-8#http://blog.csdn.net/gatieme/article/details/17659259#gatiemeimport sysfrom PyQt4.QtCore import *from PyQt4.QtGui import *#--------------------------------------------------------------------------------class SystemTrayIcon(QSystemTrayIcon):    """    The systemTrayIcon which uesd to connect the clock    """    #----------------------------------------------------------------------------    def __init__(self, mainWindow, parent = None):        """        mainWindow : the main window that the system tray icon serves to        """            super(SystemTrayIcon, self).__init__(parent)        self.window = mainWindow        self.setIcon(QIcon("heart.svg"))   # set the icon of the systemTrayIcon                self.createActions( )        self.createTrayMenu( )                self.connect(self, SIGNAL("doubleClicked"), self.window, SLOT("showNormal"))        #self.connect(self, SIGNAL("activated( )"), self, SLOT("slot_iconActivated"))            def createActions(self):        """        create some action to Max Min Normal show the window        """        self.minimizeAction = QAction("Mi&nimize", self.window, triggered = self.window.hide)        self.maximizeAction = QAction("Ma&ximize", self.window, triggered = self.window.showMaximized)        self.restoreAction = QAction("&Restore", self.window, triggered = self.window.showNormal)        self.quitAction = QAction("&Quit", self.window, triggered = qApp.quit)                    def createTrayMenu(self):         self.trayIconMenu = QMenu(self.window)         self.trayIconMenu.addAction(self.minimizeAction)         self.trayIconMenu.addAction(self.maximizeAction)         self.trayIconMenu.addAction(self.restoreAction)         self.trayIconMenu.addSeparator( )         self.trayIconMenu.addAction(self.quitAction)         self.setContextMenu(self.trayIconMenu)        def setVisible(self, visible):        self.minimizeAction.setEnabled(not visible)        self.maximizeAction.setEnabled(not self.window.isMaximized())        self.restoreAction.setEnabled(self.window.isMaximized() or not visible)        super(Window, self).setVisible(visible)    def closeEvent(self, event):        #if event.button( ) == Qt.RightButton:        self.showMessage("Message",                "The program will keep running in the system tray. To "                "terminate the program, choose <b>Quit</b> in the "                "context menu of the system tray entry.",                 QSystemTrayIcon.Information, 5000)        self.window.hide( )        event.ignore( )    def slot_iconActivated(self, reason):        if reason == QSystemTrayIcon.DoubleClick:            self.wiondow.showNormal( )#--------------------------------------------------------------------------------class DigitClock(QLCDNumber):    """    the DigitClock show a digit clock int the printer    """        #----------------------------------------------------------------------------    def __init__(self, parent = None):        """        the constructor function of the DigitClock        """        super(DigitClock, self).__init__(parent)        pale = self.palette( )        pale.setColor(QPalette.Window, QColor(100, 180, 100))        self.setPalette(pale)                self.setNumDigits(19)        self.systemTrayIcon = SystemTrayIcon(mainWindow = self)                self.dragPosition = None;        self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint | Qt.Popup | Qt.Tool)        self.setWindowOpacity(1)                self.showTime( )            # print the time when the clock show        self.systemTrayIcon.show( ) # show the SystemTaryIcon when the clock show         self.timer = QTimer( )        self.connect(self.timer, SIGNAL("timeout( )"), self.showTime)        self.timer.start(1000)                self.resize(500, 60)                #----------------------------------------------------------------------------    def showTime(self):        """        show the current time         """        self.date = QDate.currentDate( )        self.time = QTime.currentTime( )        text = self.date.toString("yyyy-MM-dd") + " " + self.time.toString("hh:mm:ss")        self.display(text)            #----------------------------------------------------------------------------    def mousePressEvent(self, event):        """        clicked the left mouse to move the clock        clicked the right mouse to hide the clock        """        if event.button( ) == Qt.LeftButton:            self.dragPosition = event.globalPos( ) - self.frameGeometry( ).topLeft( )            event.accept( )        elif event.button( ) == Qt.RightButton:            self.systemTrayIcon.closeEvent(event)            #self.systemTrayIcon.hide( )            #self.close( )    def mouseMoveEvent(self, event):        """        """        if event.buttons( ) & Qt.LeftButton:            self.move(event.globalPos( ) - self.dragPosition)            event.accept( )        def keyPressEvent(self, event):        """        you can enter "ESC" to normal show the window, when the clock is Maxmize        """        if event.key() == Qt.Key_Escape and self.isMaximized( ):            self.showNormal( )    def mouseDoubleClickEvent(self, event):        """        """        if event.buttons() == Qt.LeftButton:            if self.isMaximized( ):                self.showNormal( )            else:                self.showMaximized( )    if __name__ == "__main__":    app = QApplication(sys.argv)        digitClock = DigitClock( )    digitClock.show( )            sys.exit(app.exec_( ))