--[[ Licensed under GNU General Public License v2 * (c) 2013, Luke Bonham * (c) 2010-2012, Peter Hofmann --]] local newtimer = require("lain.helpers").newtimer local first_line = require("lain.helpers").first_line local naughty = require("naughty") local wibox = require("wibox") local math = { floor = math.floor } local string = { format = string.format } local tonumber = tonumber local setmetatable = setmetatable -- Battery infos -- lain.widgets.bat local function worker(args) local bat = {} local args = args or {} local timeout = args.timeout or 30 local battery = args.battery or "BAT0" local ac = args.ac or "AC0" local notify = args.notify or "on" local settings = args.settings or function() end bat.widget = wibox.widget.textbox('') bat_notification_low_preset = { title = "Battery low", text = "Plug the cable!", timeout = 15, fg = "#202020", bg = "#CDCDCD" } bat_notification_critical_preset = { title = "Battery exhausted", text = "Shutdown imminent", timeout = 15, fg = "#000000", bg = "#FFFFFF" } function update() bat_now = { status = "Not present", ac_status = "N/A", perc = "N/A", time = "N/A", watt = "N/A" } local bstr = "/sys/class/power_supply/" .. battery local present = first_line(bstr .. "/present") if present == "1" then local rate = tonumber(first_line(bstr .. "/power_now")) local current_now = false if not rate then rate = tonumber(first_line(bstr .. "/current_now")) current_now = true end local ratev = tonumber(first_line(bstr .. "/voltage_now")) local rem = tonumber(first_line(bstr .. "/energy_now") or first_line(bstr .. "/charge_now")) local tot = tonumber(first_line(bstr .. "/energy_full") or first_line(bstr .. "/charge_full")) bat_now.status = first_line(bstr .. "/status") or "N/A" bat_now.ac = first_line(string.format("/sys/class/power_supply/%s/online", ac)) or "N/A" local time_rat = 0 if bat_now.status == "Charging" then time_rat = (tot - rem) / rate elseif bat_now.status == "Discharging" then time_rat = rem / rate end local hrs = math.floor(time_rat) if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end local min = math.floor((time_rat - hrs) * 60) if min < 0 then min = 0 elseif min > 59 then min = 59 end bat_now.time = string.format("%02d:%02d", hrs, min) local perc = tonumber(first_line(bstr .. "/capacity")) or math.floor((rem / tot) * 100) if perc <= 100 then bat_now.perc = string.format("%d", perc) elseif perc > 100 then bat_now.perc = "100" elseif perc < 0 then bat_now.perc = "0" end if current_now then bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12) else bat_now.watt = string.format("%.2fW", rate) end end widget = bat.widget settings() -- notifications for low and critical states if bat_now.status == "Discharging" and notify == "on" and bat_now.perc then local nperc = tonumber(bat_now.perc) or 100 if nperc <= 5 then bat.id = naughty.notify({ preset = bat_notification_critical_preset, replaces_id = bat.id, }).id elseif nperc <= 15 then bat.id = naughty.notify({ preset = bat_notification_low_preset, replaces_id = bat.id, }).id end end end newtimer(battery, timeout, update) return setmetatable(bat, { __index = bat.widget }) end return setmetatable({}, { __call = function(_, ...) return worker(...) end })