diff options
Diffstat (limited to 'shell/extensions/deviceicon/battery.py')
| -rw-r--r-- | shell/extensions/deviceicon/battery.py | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/shell/extensions/deviceicon/battery.py b/shell/extensions/deviceicon/battery.py new file mode 100644 index 0000000..edfcce4 --- /dev/null +++ b/shell/extensions/deviceicon/battery.py @@ -0,0 +1,251 @@ +# 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)) |