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.
3 Licensed under GNU General Public License v2
5 * (c) 2010-2012, Peter Hofmann
9 local helpers = require("lain.helpers")
10 local fs = require("gears.filesystem")
11 local naughty = require("naughty")
12 local wibox = require("wibox")
16 local tonumber = tonumber
21 local function factory(args)
22 local pspath = args.pspath or "/sys/class/power_supply/"
24 if not fs.is_dir(pspath) then
25 naughty.notify { text = "lain.widget.bat: invalid power supply path", timeout = 0 }
29 local bat = { widget = wibox.widget.textbox() }
30 local args = args or {}
31 local timeout = args.timeout or 30
32 local notify = args.notify or "on"
33 local n_perc = args.n_perc or { 5, 15 }
34 local batteries = args.batteries or (args.battery and {args.battery}) or {}
35 local ac = args.ac or "AC0"
36 local settings = args.settings or function() end
38 function bat.get_batteries()
39 helpers.line_callback("ls -1 " .. pspath, function(line)
40 local bstr = string.match(line, "BAT%w+")
42 batteries[#batteries + 1] = bstr
44 ac = string.match(line, "A%w+") or "AC0"
49 if #batteries == 0 then bat.get_batteries() end
51 bat_notification_critical_preset = {
52 title = "Battery exhausted",
53 text = "Shutdown imminent",
59 bat_notification_low_preset = {
60 title = "Battery low",
61 text = "Plug the cable!",
67 bat_notification_charged_preset = {
68 title = "Battery full",
69 text = "You can unplug the cable",
85 for i = 1, #batteries do
86 bat_now.n_status[i] = "N/A"
90 -- used to notify full charge only once before discharging
91 local fullnotification = false
94 local sum_rate_current = 0
95 local sum_rate_voltage = 0
96 local sum_rate_power = 0
97 local sum_rate_energy = 0
98 local sum_energy_now = 0
99 local sum_energy_full = 0
101 for i, battery in ipairs(batteries) do
102 local bstr = pspath .. battery
103 local present = helpers.first_line(bstr .. "/present")
105 if tonumber(present) == 1 then
106 -- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
107 local rate_current = tonumber(helpers.first_line(bstr .. "/current_now"))
108 local rate_voltage = tonumber(helpers.first_line(bstr .. "/voltage_now"))
109 local rate_power = tonumber(helpers.first_line(bstr .. "/power_now"))
111 -- energy_now(P)[uWh], charge_now(I)[uAh]
112 local energy_now = tonumber(helpers.first_line(bstr .. "/energy_now") or
113 helpers.first_line(bstr .. "/charge_now"))
115 -- energy_full(P)[uWh], charge_full(I)[uAh]
116 local energy_full = tonumber(helpers.first_line(bstr .. "/energy_full") or
117 helpers.first_line(bstr .. "/charge_full"))
119 local energy_percentage = tonumber(helpers.first_line(bstr .. "/capacity")) or
120 math.floor((energy_now / energy_full) * 100)
122 bat_now.n_status[i] = helpers.first_line(bstr .. "/status") or "N/A"
123 bat_now.n_perc[i] = energy_percentage or bat_now.n_perc[i]
125 sum_rate_current = sum_rate_current + (rate_current or 0)
126 sum_rate_voltage = sum_rate_voltage + (rate_voltage or 0)
127 sum_rate_power = sum_rate_power + (rate_power or 0)
128 sum_rate_energy = sum_rate_energy + (rate_power or (((rate_voltage or 0) * (rate_current or 0)) / 1e6))
129 sum_energy_now = sum_energy_now + (energy_now or 0)
130 sum_energy_full = sum_energy_full + (energy_full or 0)
134 -- When one of the battery is charging, others' status are either
135 -- "Full", "Unknown" or "Charging". When the laptop is not plugged in,
136 -- one or more of the batteries may be full, but only one battery
137 -- discharging suffices to set global status to "Discharging".
138 bat_now.status = bat_now.n_status[1]
139 for _,status in ipairs(bat_now.n_status) do
140 if status == "Discharging" or status == "Charging" then
141 bat_now.status = status
144 bat_now.ac_status = tonumber(helpers.first_line(string.format("%s%s/online", pspath, ac))) or "N/A"
146 if bat_now.status ~= "N/A" then
147 if bat_now.status ~= "Full" and sum_rate_power == 0 and bat_now.ac_status == 1 then
148 bat_now.perc = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100))
149 bat_now.time = "00:00"
152 -- update {perc,time,watt} iff battery not full and rate > 0
153 elseif bat_now.status ~= "Full" then
155 -- Calculate time and watt if rates are greater then 0
156 if (sum_rate_power > 0 or sum_rate_current > 0) then
157 local div = (sum_rate_power > 0 and sum_rate_power) or sum_rate_current
159 if bat_now.status == "Charging" then
160 rate_time = (sum_energy_full - sum_energy_now) / div
162 rate_time = sum_energy_now / div
165 if 0 < rate_time and rate_time < 0.01 then -- check for magnitude discrepancies (#199)
166 rate_time_magnitude = math.abs(math.floor(math.log10(rate_time)))
167 rate_time = rate_time * 10^(rate_time_magnitude - 2)
171 local hours = math.floor(rate_time)
172 local minutes = math.floor((rate_time - hours) * 60)
173 bat_now.perc = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100))
174 bat_now.time = string.format("%02d:%02d", hours, minutes)
175 bat_now.watt = tonumber(string.format("%.2f", sum_rate_energy / 1e6))
176 elseif bat_now.status == "Full" then
178 bat_now.time = "00:00"
186 -- notifications for critical, low, and full levels
187 if notify == "on" then
188 if bat_now.status == "Discharging" then
189 if tonumber(bat_now.perc) <= n_perc[1] then
190 bat.id = naughty.notify({
191 preset = bat_notification_critical_preset,
194 elseif tonumber(bat_now.perc) <= n_perc[2] then
195 bat.id = naughty.notify({
196 preset = bat_notification_low_preset,
200 fullnotification = false
201 elseif bat_now.status == "Full" and not fullnotification then
202 bat.id = naughty.notify({
203 preset = bat_notification_charged_preset,
206 fullnotification = true
211 helpers.newtimer("batteries", timeout, bat.update)