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#!/usr/bin/env python
#
# $Id: battery.py,v 1.3 2003/06/11 11:31:26 resolve Exp $
#
# Time-stamp: <2002-12-30 16:05:01 resolve>
#
# Copyright (C) Damien Elmes <resolve@repose.cx>, 2001.
# This file is licensed under the GPL. Please see COPYING for more details.
#
"""
Display a pyosd-based graph of how much of the battery has been used.
"""
threshold_warn = 11
threshold_shutdown = 9
import commands
import os
import re
import string
import pyosd, pyosd.daemon as pyd
class BatteryStatus:
def __init__(self, battery=None):
"""The battery argument can be used to specify a particular battery to
use, otherwise the first one will be."""
self.data = {}
ACPI_PROC_DIR = "/proc/acpi/battery/"
if not battery:
try:
files = os.listdir(ACPI_PROC_DIR)
except OSError:
raise "Couldn't open dir: %s" % ACPI_PROC_DIR
if not files:
raise "No battery appears to be present"
battery = files[0]
try:
self.file = open(ACPI_PROC_DIR + os.sep + battery + os.sep +
"state")
except:
raise "Couldn't open specified battery info: %s" % \
ACPI_PROC_DIR + os.sep + battery + \
os.sep + "state"
self.total_capacity = 3736.0
def check(self, battery=None):
"""Check and return battery status"""
self.file.seek(0)
lines = self.file.readlines()
for line in lines:
(id, val) = string.split(line, ":", maxsplit=1)
self.data[id] = string.strip(val)
self.remaining_capacity = int(string.split(self.data['remaining capacity'])[0])
self.percent_used = (self.remaining_capacity / self.total_capacity * 100.0 )
def __repr__(self):
return `self.data`
class plugin:
def __init__(self):
self.plugin_name = "battery"
self.plugin_desc = "Display ACPI battery status"
self.plugin_keys = ["bat"]
self.batstat = BatteryStatus()
self.increment = 100
self.check_battery()
def check_battery(self):
"""Check battery status and warn when it reaches a certain level"""
self.batstat.check()
if self.batstat.data['charging state'] == 'discharging':
# if the battery is dischanging, check we're not running out of
# power
if self.batstat.percent_used < threshold_shutdown:
pyd.top.set_timeout(-1)
pyd.top.display("Critical! Battery at less than 7%" +
" - shutting down")
os.system("sync")
os.system("sudo halt")
return
if self.batstat.percent_used < threshold_warn:
pyd.top.set_timeout(-1)
pyd.top.display("Alert! Battery at less than 10%")
if self.batstat.percent_used < self.increment:
self.bat()
self.increment = self.batstat.percent_used - 5
else:
pyd.top.set_timeout(3)
self.increment = 100
pyd.reactor.callLater(30, self.check_battery)
def bat(self, *args):
"""Display battery info"""
self.batstat.check()
if self.batstat.data['charging state'] == 'unknown':
state = "On A/C power."
else:
state = self.batstat.data['charging state']
state = state + " (at %d%%)" % self.batstat.percent_used
pyd.top.set_colour("#bbbbFF")
pyd.top.set_timeout(3)
pyd.top.display(state)
pyd.top.display(self.batstat.percent_used, type=pyosd.TYPE_PERCENT, line=1)
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