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218 lines
8.1 KiB
218 lines
8.1 KiB
--[[ |
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Licensed under GNU General Public License v2 |
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* (c) 2013, Luca CPZ |
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* (c) 2010-2012, Peter Hofmann |
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--]] |
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local helpers = require("lain.helpers") |
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local fs = require("gears.filesystem") |
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local naughty = require("naughty") |
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local wibox = require("wibox") |
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local math = math |
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local string = string |
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local ipairs = ipairs |
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local tonumber = tonumber |
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-- Battery infos |
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-- lain.widget.bat |
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local function factory(args) |
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local pspath = args.pspath or "/sys/class/power_supply/" |
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if not fs.is_dir(pspath) then |
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naughty.notify { text = "lain.widget.bat: invalid power supply path", timeout = 0 } |
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return |
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end |
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args = args or {} |
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local bat = { widget = args.widget or wibox.widget.textbox() } |
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local timeout = args.timeout or 30 |
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local notify = args.notify or "on" |
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local full_notify = args.full_notify or notify |
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local n_perc = args.n_perc or { 5, 15 } |
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local batteries = args.batteries or (args.battery and {args.battery}) or {} |
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local ac = args.ac or "AC0" |
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local settings = args.settings or function() end |
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function bat.get_batteries() |
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helpers.line_callback("ls -1 " .. pspath, function(line) |
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local bstr = string.match(line, "BAT%w+") |
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if bstr then |
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batteries[#batteries + 1] = bstr |
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else |
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ac = string.match(line, "A%w+") or ac |
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end |
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end) |
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end |
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if #batteries == 0 then bat.get_batteries() end |
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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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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_charged_preset = { |
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title = "Battery full", |
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text = "You can unplug 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_now = { |
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status = "N/A", |
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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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bat_now.n_status = {} |
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bat_now.n_perc = {} |
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for i = 1, #batteries do |
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bat_now.n_status[i] = "N/A" |
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bat_now.n_perc[i] = 0 |
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end |
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-- used to notify full charge only once before discharging |
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local fullnotification = false |
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function bat.update() |
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local sum_rate_current = 0 |
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local sum_rate_voltage = 0 |
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local sum_rate_power = 0 |
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local sum_rate_energy = 0 |
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local sum_energy_now = 0 |
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local sum_energy_full = 0 |
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for i, battery in ipairs(batteries) do |
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local bstr = pspath .. battery |
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local present = helpers.first_line(bstr .. "/present") |
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if tonumber(present) == 1 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(helpers.first_line(bstr .. "/current_now")) |
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local rate_voltage = tonumber(helpers.first_line(bstr .. "/voltage_now")) |
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local rate_power = tonumber(helpers.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(helpers.first_line(bstr .. "/energy_now") or |
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helpers.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(helpers.first_line(bstr .. "/energy_full") or |
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helpers.first_line(bstr .. "/charge_full")) |
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local energy_percentage = tonumber(helpers.first_line(bstr .. "/capacity")) or |
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math.floor((energy_now / energy_full) * 100) |
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bat_now.n_status[i] = helpers.first_line(bstr .. "/status") or "N/A" |
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bat_now.n_perc[i] = energy_percentage or bat_now.n_perc[i] |
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sum_rate_current = sum_rate_current + (rate_current or 0) |
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sum_rate_voltage = sum_rate_voltage + (rate_voltage or 0) |
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sum_rate_power = sum_rate_power + (rate_power or 0) |
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sum_rate_energy = sum_rate_energy + (rate_power or (((rate_voltage or 0) * (rate_current or 0)) / 1e6)) |
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sum_energy_now = sum_energy_now + (energy_now or 0) |
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sum_energy_full = sum_energy_full + (energy_full or 0) |
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end |
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end |
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-- When one of the battery is charging, others' status are either |
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-- "Full", "Unknown" or "Charging". When the laptop is not plugged in, |
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-- one or more of the batteries may be full, but only one battery |
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-- discharging suffices to set global status to "Discharging". |
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bat_now.status = bat_now.n_status[1] or "N/A" |
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for _,status in ipairs(bat_now.n_status) do |
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if status == "Discharging" or status == "Charging" then |
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bat_now.status = status |
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end |
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end |
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bat_now.ac_status = tonumber(helpers.first_line(string.format("%s%s/online", pspath, ac))) or "N/A" |
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if bat_now.status ~= "N/A" then |
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if bat_now.status ~= "Full" and sum_rate_power == 0 and bat_now.ac_status == 1 then |
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bat_now.perc = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100)) |
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bat_now.time = "00:00" |
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bat_now.watt = 0 |
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-- update {perc,time,watt} iff battery not full and rate > 0 |
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elseif bat_now.status ~= "Full" then |
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local rate_time = 0 |
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-- Calculate time and watt if rates are greater then 0 |
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if (sum_rate_power > 0 or sum_rate_current > 0) then |
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local div = (sum_rate_power > 0 and sum_rate_power) or sum_rate_current |
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if bat_now.status == "Charging" then |
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rate_time = (sum_energy_full - sum_energy_now) / div |
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else -- Discharging |
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rate_time = sum_energy_now / div |
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end |
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if 0 < rate_time and rate_time < 0.01 then -- check for magnitude discrepancies (#199) |
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rate_time_magnitude = math.abs(math.floor(math.log10(rate_time))) |
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rate_time = rate_time * 10^(rate_time_magnitude - 2) |
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end |
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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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bat_now.perc = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100)) |
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bat_now.time = string.format("%02d:%02d", hours, minutes) |
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bat_now.watt = tonumber(string.format("%.2f", sum_rate_energy / 1e6)) |
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elseif bat_now.status == "Full" then |
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bat_now.perc = 100 |
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bat_now.time = "00:00" |
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bat_now.watt = 0 |
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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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-- notifications for critical, low, and full levels |
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if notify == "on" then |
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if bat_now.status == "Discharging" then |
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if tonumber(bat_now.perc) <= n_perc[1] 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 tonumber(bat_now.perc) <= n_perc[2] 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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fullnotification = false |
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elseif bat_now.status == "Full" and full_notify == "on" and not fullnotification then |
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bat.id = naughty.notify({ |
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preset = bat_notification_charged_preset, |
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replaces_id = bat.id |
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}).id |
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fullnotification = true |
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end |
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end |
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end |
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helpers.newtimer("batteries", timeout, bat.update) |
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return bat |
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end |
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return factory
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