mirror of https://github.com/lcpz/lain.git
138 lines
4.0 KiB
Lua
138 lines
4.0 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 function worker(args)
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local bat = {}
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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 ac = args.ac or "AC0"
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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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bat_notification_low_preset = {
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title = "Battery low",
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text = "Plug the cable!",
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timeout = 15,
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fg = "#202020",
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bg = "#CDCDCD"
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}
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bat_notification_critical_preset = {
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title = "Battery exhausted",
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text = "Shutdown imminent",
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timeout = 15,
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fg = "#000000",
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bg = "#FFFFFF"
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}
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function update()
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bat_now = {
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status = "Not present",
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ac_status = "N/A",
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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 astr = "/sys/class/power_supply/" .. ac
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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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-- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
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local rate_current = tonumber(first_line(bstr .. "/current_now"))
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local rate_voltage = tonumber(first_line(bstr .. "/voltage_now"))
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local rate_power = tonumber(first_line(bstr .. "/power_now"))
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-- energy_now(P)[uWh], charge_now(I)[uAh]
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local energy_now = tonumber(first_line(bstr .. "/energy_now") or
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first_line(bstr .. "/charge_now"))
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-- energy_full(P)[uWh], charge_full(I)[uAh],
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local energy_full = tonumber(first_line(bstr .. "/energy_full") or
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first_line(bstr .. "/charge_full"))
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local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
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math.floor((energy_now / energy_full) * 100)
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bat_now.status = first_line(bstr .. "/status") or "N/A"
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bat_now.ac_status = first_line(astr .. "/online") or "N/A"
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-- if rate = 0 or rate not defined skip the round
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if not (rate_power and rate_power > 0) and
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not (rate_current and rate_current > 0) and
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not (bat_now.status == "Full")
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then
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return
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end
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local rate_time = 0
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if bat_now.status == "Charging" then
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rate_time = (energy_full - energy_now) / rate_power or rate_current
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elseif bat_now.status == "Discharging" then
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rate_time = energy_now / (rate_power or rate_current)
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end
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local hours = math.floor(rate_time)
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local minutes = math.floor((rate_time - hours) * 60)
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local watt = rate_power and (rate_power / 1e6) or (rate_voltage * rate_current) / 1e12
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bat_now.perc = string.format("%d", energy_percentage)
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bat_now.time = string.format("%02d:%02d", hours, minutes)
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bat_now.watt = string.format("%.2fW", watt)
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end
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widget = bat.widget
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settings()
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-- notifications for low and critical states
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if bat_now.status == "Discharging" and notify == "on" and bat_now.perc then
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local nperc = tonumber(bat_now.perc) or 100
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if nperc <= 5 then
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bat.id = naughty.notify({
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preset = bat_notification_critical_preset,
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replaces_id = bat.id,
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}).id
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elseif nperc <= 15 then
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bat.id = naughty.notify({
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preset = bat_notification_low_preset,
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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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newtimer(battery, timeout, update)
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return setmetatable(bat, { __index = bat.widget })
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end
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return setmetatable({}, { __call = function(_, ...) return worker(...) end })
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