# -*- python -*-
# This is a small example that inverts the colours when the
# battery's capacity is low.
# Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
# Invert the colours when the battery capacity is below this threshold.
threshold = 5 # percent
# Current status.
inverted = False
def get_capacity():
'''
Get the current capacity and charging status
@return (:bool, :float) Whether the battery is discharging and the capacity (in percents)
'''
capacity, discharging = None, None
# Get capacity.
#with open('/sys/class/power_supply/BAT1/capacity', 'r') as file:
# capacity = int(file.read().split('\n')[0])
# More accurate capacity.
charge_full, charge_now = None, None
with open('/sys/class/power_supply/BAT1/charge_full', 'r') as file:
charge_full = int(file.read().split('\n')[0])
with open('/sys/class/power_supply/BAT1/charge_now', 'r') as file:
charge_now = int(file.read().split('\n')[0])
capacity = charge_now * 100 / charge_full
# Is the battery discharging?
with open('/sys/class/power_supply/BAT1/status', 'r') as file:
discharging = file.read().split('\n')[0] == 'Discharging'
return (discharging, capacity)
# Lets wait only 30 seconds, instead of a minute before running again.
wait_period = 30
# Do not fade in or out.
fadeout_time = None
fadein_time = None
def periodically(year, month, day, hour, minute, second, weekday, fade):
'''
Invoked periodically
If you want to control at what to invoke this function next time
you can set the value of the global variable `wait_period` to the
number of seconds to wait before invoking this function again.
The value does not need to be an integer.
@param year:int The year
@param month:int The month, 1 = January, 12 = December
@param day:int The day, minimum value is 1, probable maximum value is 31 (*)
@param hour:int The hour, minimum value is 0, maximum value is 23
@param minute:int The minute, minimum value is 0, maximum value is 59
@param second:int The second, minimum value is 0, probable maximum value is 60 (**)
@param weekday:int The weekday, 1 = Monday, 7 = Sunday
@param fade:float? Blueshift can use this function to fade into a state when it start
or exits. `fade` can either be negative, zero or positive or `None`,
but the magnitude of value cannot exceed 1. When Blueshift starts,
this function will be invoked multiple with the time parameters
of the time it is invoked and each time `fade` will increase towards
1, starting at 0, when the value is 1, the settings should be applied
to 100 %. After this this function will be invoked once again with
`fade` being `None`. When Blueshift exits the same behaviour is used
except, `fade` decrease towards -1 but start slightly below 0, when
-1 is reached all settings should be normal. Then Blueshift will NOT
invoke this function with `fade` being `None`, instead it will by
itself revert all settings and quit.
(*) Can be exceeded if the calendar system is changed, like in 1712-(02)Feb-30
(**) See https://en.wikipedia.org/wiki/Leap_second
'''
global inverted
(discharging, capacity) = get_capacity()
should_invert = discharging and (capacity <= threshold)
if should_invert ^ inverted:
inverted = should_invert
start_over()
if should_invert:
negative()
monitor_controller()
