mirror of https://github.com/lcpz/lain.git
140 lines
4.2 KiB
Lua
140 lines
4.2 KiB
Lua
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--[[
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Licensed under GNU General Public License v2
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* (c) 2013, Luke Bonham
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* (c) 2010-2012, Peter Hofmann
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--]]
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local newtimer = require("lain.helpers").newtimer
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local first_line = require("lain.helpers").first_line
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local naughty = require("naughty")
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local wibox = require("wibox")
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local math = { floor = math.floor }
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local string = { format = string.format }
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local tonumber = tonumber
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local setmetatable = setmetatable
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-- Battery infos
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-- lain.widgets.bat
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local bat = {}
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local function worker(args)
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local args = args or {}
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local timeout = args.timeout or 30
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local battery = args.battery or "BAT0"
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local notify = args.notify or "on"
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local settings = args.settings or function() end
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bat.widget = wibox.widget.textbox('')
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function update()
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bat_now = {
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status = "Not present",
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perc = "N/A",
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time = "N/A",
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watt = "N/A"
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}
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local bstr = "/sys/class/power_supply/" .. battery
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local present = first_line(bstr .. "/present")
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if present == "1"
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then
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local rate = first_line(bstr .. "/power_now") or
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first_line(bstr .. "/current_now")
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local ratev = first_line(bstr .. "/voltage_now")
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local rem = first_line(bstr .. "/energy_now") or
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first_line(bstr .. "/charge_now")
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local tot = first_line(bstr .. "/energy_full") or
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first_line(bstr .. "/charge_full")
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bat_now.status = first_line(bstr .. "/status") or "N/A"
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rate = tonumber(rate)
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ratev = tonumber(ratev)
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rem = tonumber(rem)
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tot = tonumber(tot)
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local time_rat = 0
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if bat_now.status == "Charging"
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then
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time_rat = (tot - rem) / rate
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elseif bat_now.status == "Discharging"
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then
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time_rat = rem / rate
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end
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local hrs = math.floor(time_rat)
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if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end
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local min = math.floor((time_rat - hrs) * 60)
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if min < 0 then min = 0 elseif min > 59 then min = 59 end
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bat_now.time = string.format("%02d:%02d", hrs, min)
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local perc = (rem / tot) * 100
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if perc <= 100 then
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bat_now.perc = string.format("%d", perc)
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elseif perc > 100 then
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bat_now.perc = "100"
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elseif perc < 0 then
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bat_now.perc = "0"
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end
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if rate ~= nil and ratev ~= nil then
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bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
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else
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bat_now.watt = "N/A"
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end
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-- notifications for low and critical states
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if bat_now.status == "Discharging" and notify == "on"
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then
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if tonumber(bat_now.perc) <= 5
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then
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bat.id = naughty.notify({
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text = "shutdown imminent",
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title = "battery nearly exhausted",
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position = "top_right",
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timeout = 15,
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fg="#000000",
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bg="#ffffff",
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ontop = true,
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replaces_id = bat.id
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}).id
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elseif tonumber(bat_now.perc) <= 15
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then
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bat.id = naughty.notify({
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text = "plug the cable",
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title = "battery low",
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position = "top_right",
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timeout = 15,
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fg="#202020",
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bg="#cdcdcd",
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ontop = true,
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replaces_id = bat.id
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}).id
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end
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end
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end
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widget = bat.widget
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settings()
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end
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newtimer("bat", timeout, update)
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return bat.widget
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end
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return setmetatable(bat, { __call = function(_, ...) return worker(...) end })
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