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labsync-tray-wx.py 25.8 KiB
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    #!/usr/bin/env python3
    # -*- coding: utf-8 -*-
    APP_LICENSE = """
        This program is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.
    
        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.
    
        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <https://www.gnu.org/licenses/>.
    """
    
    __version__ = '1.0'
    
    import signal
    import sys
    import atexit
    import os
    import time
    import argparse
    
    from gi.repository import GLib
    
    import wx
    import wx.lib.embeddedimage
    from wx.adv import NotificationMessage
    
    ################################################################################
    #CONFIG
    ################################################################################
    APP_NAME = "Labsync Tray WX"
    APP_YEAR = "2019"
    APP_VERSION = __version__ + '-' + APP_YEAR
    APP_DESCR = "Notifica lo stato di aggiornamento del software nella cartella /opt"
    APP_AUTHORS = """
    DiSIT - Sezione di Informatica
    Università del Piemonte Orientale
    help@di.unipmn.it
    """
    
    APP_ID = "labsync-tray-wx"
    
    CURR_DIR = os.path.dirname(os.path.abspath(__file__))
    
    # icons: they will be created on-the-fly from embedded images
    APP_ICONS = {}
    
    # milliseconds between checks
    CHECK_PERIOD = 30000
    # how long the notification stays on the screen (seconds, 0=until user clicks)
    NOTIFY_TIME = 0
    
    # messages
    MSG_SYNC_TITLE = "labsync"
    MSG_SYNC_TEXT = """Stiamo aggiornando il software nella cartella /opt; ci \
    sarà un po&apos; di attività sul disco.\
    \r\rAlcuni dei programmi lì presenti (comprese le macchine virtuali) potrebbero \
    non funzionare correttamente fino al termine degli aggiornamenti.\
    \r\rIl termine della procedura di aggiornamento ti verrà notificato, ti \
    preghiamo di attendere qualche minuto.\
    \r\r<b>Se hai atteso più di mezz&apos;ora, non hai ricevuto la notifica e il \
    software che vuoi usare continua a non funzionare, contatta i tecnici.</b>"""
    MSG_SYNC_ICON = wx.ICON_EXCLAMATION
    # 0 = normal, 1 = warning, 2 = critical
    MSG_SYNC_URGENCY = 2
    MSG_SYNCED_TITLE = 'labsync'
    MSG_SYNCED_TEXT = "Il software nella cartella /opt è aggiornato."
    MSG_SYNCED_ICON = wx.ICON_INFORMATION
    # 0 = normal, 1 = warning, 2 = critical
    MSG_SYNCED_URGENCY = 1
    
    # task names
    SYNC = "Syncing"
    SYNCED = "Synced"
    OFF = "Off"
    
    # file to check for saying if we're syncing or not
    FILE_TO_CHECK = "/opt/ver"
    
    # menu strings
    MENU_STATUS = "Status"
    MENU_ABOUT = "About"
    MENU_EXIT = "Exit"
    
    ################################################################################
    ################################################################################
    
    APP_ICONS_DATA = {
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        SYNCED: wx.lib.embeddedimage.PyEmbeddedImage(
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        SYNC: wx.lib.embeddedimage.PyEmbeddedImage(
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    }
    
    class TrayApp(wx.adv.TaskBarIcon):
        TBMENU_ABOUT = wx.NewId()
        TBMENU_CLOSE   = wx.NewId()
        TBMENU_STATUS  = wx.NewId()
    
        def __init__(self, frame):
            wx.adv.TaskBarIcon.__init__(self)
    
            self.frame = frame
            self.task_changed = True
            self.task = SYNCED
            self.icon = None
            self.current_notification = None
    
            # create all the icons
            self.makeIcons()
    
            # Set the icon
            icon = APP_ICONS[OFF]
            self.SetIcon(icon, APP_NAME + ' - ' + self.task)
            self.imgidx = 1
    
            # bind some events
            self.Bind(wx.adv.EVT_TASKBAR_LEFT_DCLICK, self.onLeftClick)
            self.Bind(wx.EVT_MENU, self.onMenuStatus, id=self.TBMENU_STATUS)
            self.Bind(wx.EVT_MENU, self.onMenuAbout, id=self.TBMENU_ABOUT)
            self.Bind(wx.EVT_MENU, self.onMenuQuit, id=self.TBMENU_CLOSE)
    
            # initialize task value
            self.updateTask()
            if self.task_changed:
                self.sendNotification()
            # then start updating every CHECK_PERIOD seconds
            # http://developer.gnome.org/pygobject/stable/glib-functions.html#function-glib--timeout-add-seconds
            #GLib.timeout_add_seconds(CHECK_PERIOD, self.onTimeout)
            self.timer = wx.Timer(self)
            self.Bind(wx.EVT_TIMER, self.onTimer, self.timer)
            self.timer.Start(CHECK_PERIOD)
    
            # clean up on exit, both normal and ctrl-c
            atexit.register(self.handlerExit)
            signal.signal(signal.SIGINT, self.handlerSignal)
    
        def CreatePopupMenu(self):
            """
            This method is called by the base class when it needs to popup
            the menu for the default EVT_RIGHT_DOWN event.  Just create
            the menu how you want it and return it from this function,
            the base class takes care of the rest.
            """
            menu = wx.Menu()
            menu.Append(self.TBMENU_STATUS, MENU_STATUS)
            menu.Append(self.TBMENU_ABOUT, MENU_ABOUT)
            menu.Append(wx.ID_SEPARATOR)
            menu.Append(self.TBMENU_CLOSE, MENU_EXIT)
            return menu
    
        def makeIcons(self):
            for key, value in APP_ICONS_DATA.items():
                for key, value in APP_ICONS_DATA.items():
                    APP_ICONS[key] = value.Icon
                    # deprecated
                    #APP_ICONS[key] = self.makeIcon(value.getImage())
    
        # deprecated
        def makeIcon(self, img):
            """
            The various platforms have different requirements for the
            icon size...
            """
            if "wxMSW" in wx.PlatformInfo:
                img = img.Scale(16, 16)
            elif "wxGTK" in wx.PlatformInfo:
                img = img.Scale(22, 22)
            # wxMac can be any size upto 128x128, so leave the source img alone....
            icon = wx.Icon(img.ConvertToBitmap())
            return icon
    
        def onLeftClick(self, evt):
            self.updateTask()
            self.sendNotification()
    
        def cleanUp(self):
            # close shown notification, if any
            if self.current_notification != None:
                self.current_notification.Close()
                self.current_notification = None
    
            # stop the active timer if it is running
            if self.timer.IsRunning():
                self.timer.Stop()
            # close the main frame on main loop termination
            wx.CallAfter(self.frame.Close)
            # the following is too powerfull, better not use it to terminate
            #wx.GetApp().ExitMainLoop()
    
        def handlerExit(self):
            self.cleanUp()
    
        def handlerSignal(self, sig, frame):
            self.cleanUp()
    
        def onMenuQuit(self, evt):
            self.cleanUp()
    
        def onMenuStatus(self, evt):
            self.updateTask()
            self.sendNotification()
    
        def sendNotification(self):
            if self.task == SYNC:
                title = MSG_SYNC_TITLE
                txt = MSG_SYNC_TEXT
                icon = MSG_SYNC_ICON
                urgency = MSG_SYNC_URGENCY
            else:
                title = MSG_SYNCED_TITLE
                txt = MSG_SYNCED_TEXT
                icon = MSG_SYNCED_ICON
                urgency = MSG_SYNCED_URGENCY
            # close the current notification, if any
            if self.current_notification != None:
                self.current_notification.Close()
                self.current_notification = None
    
            n = NotificationMessage()
            n.SetTitle(title)
            n.SetMessage(txt)
            n.SetFlags(icon)
            n.Show(NOTIFY_TIME)
            self.current_notification = n
    
        def onMenuAbout(self, evt):
            aboutInfo = wx.adv.AboutDialogInfo()
            aboutInfo.SetIcon(APP_ICONS[self.task])
            aboutInfo.SetName(APP_NAME)
            aboutInfo.SetVersion(APP_VERSION)
            aboutInfo.SetDescription(APP_DESCR)
            aboutInfo.AddDeveloper(APP_AUTHORS)
            aboutInfo.SetLicence(APP_LICENSE)
            wx.adv.GenericAboutBox(aboutInfo)
    
    
        def updateIcon(self, icon):
            self.icon = icon
            self.SetIcon(icon, APP_NAME + ' - ' + self.task)
    
        def updateTask(self):
            exists = os.path.isfile(FILE_TO_CHECK)
            if exists:
                task = SYNCED
                self.updateIcon(APP_ICONS[SYNCED])
            else:
                task = SYNC
                self.updateIcon(APP_ICONS[SYNC])
            if self.task != task:
                self.task_changed = True
            else:
                self.task_changed = False
            self.task = task
    
        def onTimeout(self):
            """This will be called every few seconds by the GLib.timeout.
            """
            self.updateTask()
            if self.task_changed:
                self.sendNotification()
            # return True so that we get called again
            # returning False will make the timeout stop
            return True
    
        def onTimer(self, evt):
            self.updateTask()
            if self.task_changed:
                self.sendNotification()
    
    class MainFrame(wx.Frame):
        def __init__(self, parent):
            wx.Frame.__init__(self, parent, title="Labsync Tray WX")
            self.tbicon = TrayApp(self)
            self.Bind(wx.EVT_CLOSE, self.onCloseWindow)
    
        def onCloseWindow(self, evt):
            self.tbicon.Destroy()
            evt.Skip()
    
    if __name__ == "__main__":
        # parse command line arguments
        parser = argparse.ArgumentParser(description=APP_NAME + ' ' + APP_VERSION)
        parser.add_argument('-p', '--period', type=int,
            help='checking period (milliseconds between checkings)')
        args = parser.parse_args()
        if args.period:
            CHECK_PERIOD = args.period
            print ('Checking period: ' + str(CHECK_PERIOD) + " ms")
    
        app = wx.App(redirect=False)
        frame = MainFrame(None)
        # not interested in main window to show up, just start the tray icon
        #frame.Show(True)
        app.MainLoop()