All patches and comments are welcome. Please squash your changes to logical
commits before using git-format-patch and git-send-email to
patches@git.madduck.net.
If you'd read over the Git project's submission guidelines and adhered to them,
I'd be especially grateful.
4 Licensed under GNU General Public License v2
5 * (c) 2013, Luke Bonham
6 * (c) 2010-2012, Peter Hofmann
10 local newtimer = require("lain.helpers").newtimer
11 local first_line = require("lain.helpers").first_line
13 local naughty = require("naughty")
14 local wibox = require("wibox")
16 local math = { floor = math.floor }
17 local string = { format = string.format }
18 local tonumber = tonumber
20 local setmetatable = setmetatable
26 local function worker(args)
27 local args = args or {}
28 local timeout = args.timeout or 30
29 local battery = args.battery or "BAT0"
30 local settings = args.settings or function() end
32 bat.widget = wibox.widget.textbox('')
36 status = "Not present",
42 local bstr = "/sys/class/power_supply/" .. battery
44 local present = first_line(bstr .. "/present")
48 local rate = first_line(bstr .. "/power_now") or
49 first_line(bstr .. "/current_now")
51 local ratev = first_line(bstr .. "/voltage_now")
53 local rem = first_line(bstr .. "/energy_now") or
54 first_line(bstr .. "/charge_now")
56 local tot = first_line(bstr .. "/energy_full") or
57 first_line(bstr .. "/charge_full")
59 bat_now.status = first_line(bstr .. "/status") or "N/A"
62 ratev = tonumber(ratev)
67 if bat_now.status == "Charging"
69 time_rat = (tot - rem) / rate
70 elseif bat_now.status == "Discharging"
75 local hrs = math.floor(time_rat)
76 if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end
78 local min = math.floor((time_rat - hrs) * 60)
79 if min < 0 then min = 0 elseif min > 59 then min = 59 end
81 bat_now.time = string.format("%02d:%02d", hrs, min)
82 bat_now.perc = string.format("%d", (rem / tot) * 100)
83 bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
85 -- notifications for low and critical states
86 if bat_now.status == "Discharging"
88 if tonumber(bat_now.perc) <= 5
90 bat.id = naughty.notify({
91 text = "shutdown imminent",
92 title = "battery nearly exhausted",
93 position = "top_right",
100 elseif tonumber(bat_now.perc) <= 15
102 bat.id = naughty.notify({
103 text = "plug the cable",
104 title = "battery low",
105 position = "top_right",
120 newtimer("bat", timeout, update)
125 return setmetatable(bat, { __call = function(_, ...) return worker(...) end })