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# Copyright (C) 2006-2007, Red Hat, Inc.
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import logging
from gettext import gettext as _
import gconf
import gobject
import gtk
import dbus
from sugar.graphics import style
from sugar.graphics.icon import get_icon_state
from sugar.graphics.tray import TrayIcon
from sugar.graphics.palette import Palette
from sugar.graphics.xocolor import XoColor
from jarabe.frame.frameinvoker import FrameWidgetInvoker
_ICON_NAME = 'battery'
_STATUS_CHARGING = 0
_STATUS_DISCHARGING = 1
_STATUS_FULLY_CHARGED = 2
_STATUS_NOT_PRESENT = 3
_LEVEL_PROP = 'battery.charge_level.percentage'
_CHARGING_PROP = 'battery.rechargeable.is_charging'
_DISCHARGING_PROP = 'battery.rechargeable.is_discharging'
_PRESENT_PROP = 'battery.present'
class DeviceView(TrayIcon):
FRAME_POSITION_RELATIVE = 102
def __init__(self, udi):
client = gconf.client_get_default()
self._color = XoColor(client.get_string('/desktop/sugar/user/color'))
TrayIcon.__init__(self, icon_name=_ICON_NAME, xo_color=self._color)
self.set_palette_invoker(FrameWidgetInvoker(self))
self._model = DeviceModel(udi)
self.palette = BatteryPalette(_('My Battery'))
self.palette.set_group_id('frame')
self._model.connect('notify::level',
self._battery_status_changed_cb)
self._model.connect('notify::charging',
self._battery_status_changed_cb)
self._model.connect('notify::discharging',
self._battery_status_changed_cb)
self._model.connect('notify::present',
self._battery_status_changed_cb)
self._update_info()
def _update_info(self):
name = _ICON_NAME
current_level = self._model.props.level
xo_color = self._color
badge_name = None
if not self._model.props.present:
status = _STATUS_NOT_PRESENT
badge_name = None
xo_color = XoColor('%s,%s' % (style.COLOR_WHITE.get_svg(),
style.COLOR_WHITE.get_svg()))
elif self._model.props.charging:
status = _STATUS_CHARGING
name += '-charging'
xo_color = XoColor('%s,%s' % (style.COLOR_WHITE.get_svg(),
style.COLOR_WHITE.get_svg()))
elif self._model.props.discharging:
status = _STATUS_DISCHARGING
if current_level <= 15:
badge_name = 'emblem-warning'
else:
status = _STATUS_FULLY_CHARGED
self.icon.props.icon_name = get_icon_state(name, current_level, step=-5)
self.icon.props.xo_color = xo_color
self.icon.props.badge_name = badge_name
self.palette.set_level(current_level)
self.palette.set_status(status)
def _battery_status_changed_cb(self, pspec, param):
self._update_info()
class BatteryPalette(Palette):
def __init__(self, primary_text):
Palette.__init__(self, primary_text)
self._level = 0
self._progress_bar = gtk.ProgressBar()
self._progress_bar.set_size_request(
style.zoom(style.GRID_CELL_SIZE * 4), -1)
self._progress_bar.show()
self._status_label = gtk.Label()
self._status_label.show()
vbox = gtk.VBox()
vbox.pack_start(self._progress_bar)
vbox.pack_start(self._status_label)
vbox.show()
self._progress_widget = vbox
self.set_content(self._progress_widget)
def set_level(self, percent):
self._level = percent
fraction = percent / 100.0
self._progress_bar.set_fraction(fraction)
def set_status(self, status):
current_level = self._level
secondary_text = ''
status_text = '%s%%' % current_level
progress_widget = self._progress_widget
if status == _STATUS_NOT_PRESENT:
secondary_text = _('Removed')
progress_widget = None
elif status == _STATUS_CHARGING:
secondary_text = _('Charging')
elif status == _STATUS_DISCHARGING:
if current_level <= 15:
secondary_text = _('Very little power remaining')
else:
#TODO: make this less of an wild/educated guess
minutes_remaining = int(current_level / 0.59)
remaining_hourpart = minutes_remaining / 60
remaining_minpart = minutes_remaining % 60
secondary_text = _('%(hour)d:%(min).2d remaining') % \
{'hour': remaining_hourpart, 'min': remaining_minpart}
else:
secondary_text = _('Charged')
self.set_content(progress_widget)
self.props.secondary_text = secondary_text
self._status_label.set_text(status_text)
class DeviceModel(gobject.GObject):
__gproperties__ = {
'level' : (int, None, None, 0, 100, 0,
gobject.PARAM_READABLE),
'charging' : (bool, None, None, False,
gobject.PARAM_READABLE),
'discharging' : (bool, None, None, False,
gobject.PARAM_READABLE),
'present' : (bool, None, None, False,
gobject.PARAM_READABLE)
}
def __init__(self, udi):
gobject.GObject.__init__(self)
bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
proxy = bus.get_object('org.freedesktop.Hal', udi,
follow_name_owner_changes=True)
self._battery = dbus.Interface(proxy, 'org.freedesktop.Hal.Device')
bus.add_signal_receiver(self._battery_changed,
'PropertyModified',
'org.freedesktop.Hal.Device',
'org.freedesktop.Hal',
udi)
self._level = self._get_level()
self._charging = self._get_charging()
self._discharging = self._get_discharging()
self._present = self._get_present()
def _get_level(self):
try:
return self._battery.GetProperty(_LEVEL_PROP)
except dbus.DBusException:
logging.error('Cannot access %s', _LEVEL_PROP)
return 0
def _get_charging(self):
try:
return self._battery.GetProperty(_CHARGING_PROP)
except dbus.DBusException:
logging.error('Cannot access %s', _CHARGING_PROP)
return False
def _get_discharging(self):
try:
return self._battery.GetProperty(_DISCHARGING_PROP)
except dbus.DBusException:
logging.error('Cannot access %s', _DISCHARGING_PROP)
return False
def _get_present(self):
try:
return self._battery.GetProperty(_PRESENT_PROP)
except dbus.DBusException:
logging.error('Cannot access %s', _PRESENT_PROP)
return False
def do_get_property(self, pspec):
if pspec.name == 'level':
return self._level
if pspec.name == 'charging':
return self._charging
if pspec.name == 'discharging':
return self._discharging
if pspec.name == 'present':
return self._present
def get_type(self):
return 'battery'
def _battery_changed(self, num_changes, changes_list):
for change in changes_list:
if change[0] == _LEVEL_PROP:
self._level = self._get_level()
self.notify('level')
elif change[0] == _CHARGING_PROP:
self._charging = self._get_charging()
self.notify('charging')
elif change[0] == _DISCHARGING_PROP:
self._discharging = self._get_discharging()
self.notify('discharging')
elif change[0] == _PRESENT_PROP:
self._present = self._get_present()
self.notify('present')
def setup(tray):
bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
proxy = bus.get_object('org.freedesktop.Hal',
'/org/freedesktop/Hal/Manager')
hal_manager = dbus.Interface(proxy, 'org.freedesktop.Hal.Manager')
for udi in hal_manager.FindDeviceByCapability('battery'):
tray.add_device(DeviceView(udi))
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