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 ac = args.ac or "AC0"
31 local notify = args.notify or "on"
32 local settings = args.settings or function() end
34 bat.widget = wibox.widget.textbox('')
36 bat_notification_low_preset = {
37 title = "Battery low",
38 text = "Plug the cable!",
44 bat_notification_critical_preset = {
45 title = "Battery exhausted",
46 text = "Shutdown imminent",
54 status = "Not present",
61 local bstr = "/sys/class/power_supply/" .. battery
62 local present = first_line(bstr .. "/present")
66 local rate = tonumber(first_line(bstr .. "/power_now"))
67 local current_now = false
70 rate = tonumber(first_line(bstr .. "/current_now"))
74 local ratev = tonumber(first_line(bstr .. "/voltage_now"))
76 local rem = tonumber(first_line(bstr .. "/energy_now") or
77 first_line(bstr .. "/charge_now"))
79 local tot = tonumber(first_line(bstr .. "/energy_full") or
80 first_line(bstr .. "/charge_full"))
82 bat_now.status = first_line(bstr .. "/status") or "N/A"
83 bat_now.ac = first_line(string.format("/sys/class/power_supply/%s/online", ac)) or "N/A"
86 if bat_now.status == "Charging"
88 time_rat = (tot - rem) / rate
89 elseif bat_now.status == "Discharging"
94 local hrs = math.floor(time_rat)
95 if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end
97 local min = math.floor((time_rat - hrs) * 60)
98 if min < 0 then min = 0 elseif min > 59 then min = 59 end
100 bat_now.time = string.format("%02d:%02d", hrs, min)
102 local perc = tonumber(first_line(bstr .. "/capacity")) or math.floor((rem / tot) * 100)
105 bat_now.perc = string.format("%d", perc)
106 elseif perc > 100 then
113 bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
115 bat_now.watt = string.format("%.2fW", rate)
122 -- notifications for low and critical states
123 if bat_now.status == "Discharging" and notify == "on" and bat_now.perc
125 local nperc = tonumber(bat_now.perc) or 100
128 bat.id = naughty.notify({
129 preset = bat_notification_critical_preset,
130 replaces_id = bat.id,
134 bat.id = naughty.notify({
135 preset = bat_notification_low_preset,
136 replaces_id = bat.id,
142 newtimer(battery, timeout, update)
144 return setmetatable(bat, { __index = bat.widget })
147 return setmetatable({}, { __call = function(_, ...) return worker(...) end })