#!/usr/bin/env python
# coding: utf-8
from . import base
from six import u
from subprocess import Popen, PIPE
import re
[docs]class ThermalSensor(base.InLoopPollText):
'''
For using the thermal sensor widget you need to have lm-sensors installed.
You can get a list of the tag_sensors executing "sensors" in your terminal.
Then you can choose which you want, otherwise it will display the first
available.
'''
defaults = [
('metric', True, 'True to use metric/C, False to use imperial/F'),
('show_tag', False, 'Show tag sensor'),
('update_interval', 2, 'Update interval in seconds'),
('tag_sensor', None, 'Tag of the temperature sensor. For example: "temp1" or "Core 0"'),
(
'threshold',
70,
'If the current temperature value is above, '
'then change to foreground_alert colour'
),
('foreground_alert', 'ff0000', 'Foreground colour alert'),
]
def __init__(self, **config):
base.InLoopPollText.__init__(self, **config)
self.add_defaults(ThermalSensor.defaults)
self.sensors_temp = re.compile(
u(r"""
([a-zA-Z0-9\s]+): #Tag
\s+[+-] #Temp signed
([0-9]+\.[0-9]+) #Temp value
(\xc2\xb0 #° match
[CF]) #Celsius or Fahrenheit
"""),
re.UNICODE | re.VERBOSE
)
self.value_temp = re.compile("[0-9]+\.[0-9]+")
temp_values = self.get_temp_sensors()
self.foreground_normal = self.foreground
if temp_values is None:
self.data = "sensors command not found"
elif len(temp_values) == 0:
self.data = "Temperature sensors not found"
elif self.tag_sensor is None:
for k in temp_values:
self.tag_sensor = k
break
def get_temp_sensors(self):
fahrenheit = []
if not self.metric:
fahrenheit = ["-f"]
try:
cmd_sensors = Popen(["sensors", ] + fahrenheit, stdout=PIPE)
except OSError:
return None
cmd_sensors.wait()
stdout, _ = cmd_sensors.communicate()
temp_values = {}
for value in re.findall(self.sensors_temp, stdout.decode()):
temp_values[value[0]] = value[1:]
return temp_values
def poll(self):
temp_values = self.get_temp_sensors()
if temp_values is None:
return False
text = ""
if self.show_tag and self.tag_sensor is not None:
text = self.tag_sensor + ": "
text += "".join(temp_values.get(self.tag_sensor, ['N/A']))
temp_value = float(temp_values.get(self.tag_sensor, [0])[0])
if temp_value > self.threshold:
self.layout.colour = self.foreground_alert
else:
self.layout.colour = self.foreground_normal
return text