diff options
Diffstat (limited to 'extensions/deviceicon/resources.py')
| -rw-r--r-- | extensions/deviceicon/resources.py | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/extensions/deviceicon/resources.py b/extensions/deviceicon/resources.py deleted file mode 100644 index 65e00dc..0000000 --- a/extensions/deviceicon/resources.py +++ /dev/null @@ -1,215 +0,0 @@ -# Copyright (C) Anish Mangal <anishmangal2002@gmail.com> -# -# 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 gettext import gettext as _ -import logging -import os - -import gobject -import gtk -import gconf - -from sugar.graphics.tray import TrayIcon -from sugar.graphics.xocolor import XoColor -from sugar.graphics.palette import Palette -from sugar.graphics import style - - -_SYSTEM_MOODS = ['-sad', '-normal', '-happy'] -_ICON_NAME = 'computer' -_UPDATE_INTERVAL = 5*1000 - - -class DeviceView(TrayIcon): - - FRAME_POSITION_RELATIVE = 500 - - def __init__(self): - 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.create_palette() - self._icon_widget.connect('button-release-event', self._click_cb) - - def create_palette(self): - self.palette = ResourcePalette(_('System resources')) - self.palette.set_group_id('frame') - self.palette.add_timer() - self.palette.connect('system-mood-changed', - self._system_mood_changed_cb) - return self.palette - - def _system_mood_changed_cb(self, palette_, mood): - self.icon.props.icon_name = _ICON_NAME + mood - - def _click_cb(self, widget, event): - self.palette_invoker.notify_right_click() - - -class ResourcePalette(Palette): - __gsignals__ = { - 'system-mood-changed': (gobject.SIGNAL_RUN_FIRST, - gobject.TYPE_NONE, - ([str])), - } - - def __init__(self, primary_text): - Palette.__init__(self, label=primary_text) - - self.vbox = gtk.VBox() - self.set_content(self.vbox) - - self._cpu_text = gtk.Label() - self.vbox.pack_start(self._cpu_text, padding=style.DEFAULT_PADDING) - self._cpu_bar = gtk.ProgressBar() - self._cpu_bar.set_size_request( - style.zoom(style.GRID_CELL_SIZE * 4), -1) - self.vbox.pack_start(self._cpu_bar, padding=style.DEFAULT_PADDING) - - self._memory_text = gtk.Label() - self.vbox.pack_start(self._memory_text, padding=style.DEFAULT_PADDING) - self._memory_bar = gtk.ProgressBar() - self._memory_bar.set_size_request( - style.zoom(style.GRID_CELL_SIZE * 4), -1) - self.vbox.pack_start(self._memory_bar, padding=style.DEFAULT_PADDING) - - self._system_mood = None - try: - self._cpu_times = self._get_cpu_times_list() - except IOError: - logging.exception('An error ocurred while attempting to ' - 'read /proc/stat') - self._stop_computing_statistics() - - self.vbox.show() - self._cpu_text.show() - self._cpu_bar.show() - self._memory_text.show() - self._memory_bar.show() - - def add_timer(self): - gobject.timeout_add(_UPDATE_INTERVAL, self.__timer_cb) - - def _get_cpu_times_list(self): - """Return various cpu times as read from /proc/stat - - This method returns the following cpu times measured - in jiffies (1/100 of a second for x86 systems) - as an ordered list of numbers - [user, nice, - system, idle, iowait] where, - - user: normal processes executing in user mode - nice: niced processes executing in user mode - system: processes executing in kernel mode - idle: twiddling thumbs - iowait: waiting for I/O to complete - - Note: For systems having 2 or more CPU's, the above - numbers would be the cumulative sum of these times - for all CPU's present in the system. - - """ - return [int(count) - for count in file('/proc/stat').readline().split()[1:6]] - - def _percentage_cpu_available(self): - """ - Return free CPU resources as a percentage - - """ - _cpu_times_new = self._get_cpu_times_list() - _cpu_times_current = [(new - old) - for new, old in zip(_cpu_times_new, self._cpu_times)] - user_, nice_, system_, idle, iowait = _cpu_times_current - cpu_free = (idle + iowait) * 100.0 / sum(_cpu_times_current) - self._cpu_times = self._get_cpu_times_list() - return cpu_free - - def _percentage_memory_available(self): - """ - Return free memory as a percentage - - """ - for line in file('/proc/meminfo'): - name, value, unit_ = line.split()[:3] - if 'MemTotal:' == name: - total = int(value) - elif 'MemFree:' == name: - free = int(value) - elif 'Buffers:' == name: - buffers = int(value) - elif 'Cached:' == name: - cached = int(value) - elif 'Active:' == name: - break - return (free + buffers + cached) * 100.0 / total - - def __timer_cb(self): - try: - cpu_in_use = 100 - self._percentage_cpu_available() - memory_in_use = 100 - self._percentage_memory_available() - except IOError: - logging.exception('An error ocurred while trying to ' - 'retrieve resource usage statistics') - self._stop_and_show_error() - return False - else: - self._cpu_text.set_label(_('CPU in use: %d%%' % cpu_in_use)) - self._cpu_bar.set_fraction(float(cpu_in_use) / 100) - self._memory_text.set_label(_('Memory in use: %d%%' % - memory_in_use)) - self._memory_bar.set_fraction(float(memory_in_use) / 100) - - # both cpu_free and memory_free lie between 0-100 - system_mood = _SYSTEM_MOODS[ - int(300 - (cpu_in_use + 2 * memory_in_use)) // 100] - - # check if self._system_mood exists - try: - if self._system_mood != system_mood: - self.emit('system-mood-changed', system_mood) - self._system_mood = system_mood - except AttributeError: - self.emit('system-mood-changed', system_mood) - self._system_mood = system_mood - - return True - - def _stop_and_show_error(self): - """ - Stop computing usage statistics and display an error message - since we've hit an exception. - - """ - # Use the existing _cpu_text label to display the error. Remove - # everything else. - self._cpu_text.set_size_request( - style.zoom(style.GRID_CELL_SIZE * 4), -1) - self._cpu_text.set_line_wrap(True) - self._cpu_text.set_text(_('Cannot compute CPU and memory usage ' - 'statistics!')) - self.vbox.remove(self._cpu_bar) - self.vbox.remove(self._memory_text) - self.vbox.remove(self._memory_bar) - self.emit('system-mood-changed', '-error') - - -def setup(tray): - if not (os.path.exists('/proc/stat') and os.path.exists('/proc/meminfo')): - logging.warning('Either /proc/stat or /proc/meminfo not present. Not ' - 'adding the CPU and memory usage icon to the frame') - return - tray.add_device(DeviceView()) |