sugar-toolkit-gtk3/shell/view/devices/battery.py

# 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

from sugar.graphics import canvasicon
from sugar.graphics import units

_ICON_NAME = 'device-battery'

class DeviceView(canvasicon.CanvasIcon):
    def __init__(self, model):
        canvasicon.CanvasIcon.__init__(self, scale=units.MEDIUM_ICON_SCALE)
        self._model = model

        model.connect('notify::level', self._level_changed_cb)

        self._update_level()

    def _update_level(self):
        self.props.icon_name = canvasicon.get_icon_state(
                                    _ICON_NAME, self._model.props.level)

    def _level_changed_cb(self, pspec, param):
        self._update_level()