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
25 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 notify = args.notify or "on"
31 local settings = args.settings or function() end
33 bat.widget = wibox.widget.textbox('')
35 bat_notification_low_preset = {
36 title = "Battery low",
37 text = "Plug the cable!",
43 bat_notification_critical_preset = {
44 title = "Battery exhausted",
45 text = "Shutdown imminent",
53 status = "Not present",
59 local bstr = "/sys/class/power_supply/" .. battery
61 local present = first_line(bstr .. "/present")
65 local rate = first_line(bstr .. "/power_now") or
66 first_line(bstr .. "/current_now")
68 local ratev = first_line(bstr .. "/voltage_now")
70 local rem = first_line(bstr .. "/energy_now") or
71 first_line(bstr .. "/charge_now")
73 local tot = first_line(bstr .. "/energy_full") or
74 first_line(bstr .. "/charge_full")
76 bat_now.status = first_line(bstr .. "/status") or "N/A"
78 rate = tonumber(rate) or 1
79 ratev = tonumber(ratev)
84 if bat_now.status == "Charging"
86 time_rat = (tot - rem) / rate
87 elseif bat_now.status == "Discharging"
92 local hrs = math.floor(time_rat)
93 if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end
95 local min = math.floor((time_rat - hrs) * 60)
96 if min < 0 then min = 0 elseif min > 59 then min = 59 end
98 bat_now.time = string.format("%02d:%02d", hrs, min)
100 bat_now.perc = first_line(bstr .. "/capacity")
102 if not bat_now.perc then
103 local perc = (rem / tot) * 100
105 bat_now.perc = string.format("%d", perc)
106 elseif perc > 100 then
113 if rate ~= nil and ratev ~= nil then
114 bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
124 -- notifications for low and critical states
125 if bat_now.status == "Discharging" and notify == "on" and bat_now.perc ~= nil
127 local nperc = tonumber(bat_now.perc) or 100
130 bat.id = naughty.notify({
131 preset = bat_notification_critical_preset,
132 replaces_id = bat.id,
136 bat.id = naughty.notify({
137 preset = bat_notification_low_preset,
138 replaces_id = bat.id,
144 newtimer(battery, timeout, update)
146 return setmetatable(bat, { __index = bat.widget })
149 return setmetatable({}, { __call = function(_, ...) return worker(...) end })