caspermon/caspermon-applet

   1 #!/usr/bin/python
   2
   3 import pygtk
   4 pygtk.require('2.0')
   5
   6 import gtk
   7 import gnome.applet
   8 import subprocess
   9 import os
  10
  11 # A simple applet to display the utilization of the snapshot device
  12 # during a casper session
  13 #
  14 # Matt Zimmerman <mdz@canonical.com>
  15
  16 # TODO:
  17 # - tooltip with details
  18 # - flash at threshold
  19
  20 class CasperApplet:
  21     def __init__(self, applet, iid):
  22         self.timeout_interval = 1000
  23         self.device = 'casper-snapshot'
  24         self.capacity = [0,0]
  25         self.datafile = '/var/lib/casper/snapshot-status'
  26
  27         # initializate the gnome internals
  28         gnome.init("casper", "0.1")
  29
  30         self.applet = applet
  31
  32         self.tooltips = gtk.Tooltips()
  33         self.hbox = gtk.HBox()
  34         applet.add(self.hbox)
  35
  36         # add the second button event for the popup menu and the enter mouse event to change the tooltip value
  37         self.ev_box = gtk.EventBox()
  38         #self.ev_box.connect("button-press-event",self.button_press)
  39         self.ev_box.connect("enter-notify-event", self.update_info)
  40         self.hbox.add(self.ev_box)
  41
  42         self.prog = gtk.ProgressBar()
  43         self.ev_box.add(self.prog)
  44
  45         self.update_info()
  46
  47         gtk.timeout_add(self.timeout_interval,self.update_info, self)
  48
  49         applet.connect("destroy",self.cleanup)
  50         applet.show_all()
  51
  52     def update_info(self, event=None):
  53         self.capacity = self.read_info()
  54         self.prog.set_fraction(float(self.capacity[0]) / self.capacity[1])
  55         self.prog.update()
  56
  57     def read_info(self):
  58         fields = open(self.datafile).readline().split()
  59         if fields[2] != 'snapshot':
  60             return None
  61
  62         return map(int,fields[3].split('/', 1))
  63
  64     def cleanup(self):
  65         # what goes here?
  66         pass
  67
  68 def casper_factory(applet, iid):
  69     CasperApplet(applet, iid)
  70
  71     return gtk.TRUE
  72
  73 gnome.applet.bonobo_factory("OAFIID:GNOME_PythonAppletCasper_Factory",
  74                              gnome.applet.Applet.__gtype__,
  75                              "casper", "0", casper_factory)