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--[[
tpbat.lua
Battery status widget for ThinkPad laptops that use SMAPI
lain.widgets.contrib.tpbat
More on tp_smapi: http://www.thinkwiki.org/wiki/Tp_smapi
Licensed under GNU General Public License v2
* (c) 2013, Conor Heine
* (c) 2013, Luke Bonham
* (c) 2010-2012, Peter Hofmann
--]]
local debug = { getinfo = debug.getinfo }
local newtimer = require("lain.helpers").newtimer
local first_line = require("lain.helpers").first_line
local beautiful = require("beautiful")
local naughty = require("naughty")
local wibox = require("wibox")
local string = { format = string.format }
local math = { floor = math.floor }
local tostring = tostring
local setmetatable = setmetatable
package.path = debug.getinfo(1,"S").source:match[[^@?(.*[\/])[^\/]-$]] .. "?.lua;" .. package.path
local smapi = require("smapi")
-- ThinkPad SMAPI-enabled battery info widget
-- lain.widgets.contrib.tpbat
local tpbat = { }
local tpbat_notification = nil
function tpbat:hide()
if tpbat_notification ~= nil
then
naughty.destroy(tpbat_notification)
tpbat_notification = nil
end
end
function tpbat:show(t_out)
tpbat:hide()
local bat = self.bat
local t_out = t_out or 0
if bat == nil or not bat:installed() then return end
local mfgr = bat:get('manufacturer') or "no_mfgr"
local model = bat:get('model') or "no_model"
local chem = bat:get('chemistry') or "no_chem"
local status = bat:get('state') or "nil"
local time = bat:remaining_time()
local msg = "\t"
if status ~= "idle" and status ~= "nil"
then
if time == "N/A"
then
msg = "...Calculating time remaining..."
else
msg = time .. (status == "charging" and " until charged" or " remaining")
end
else
msg = "On AC Power"
end
local str = string.format("%s : %s %s (%s)\n", bat.name, mfgr, model, chem)
.. string.format("\n%s \t\t\t %s", status:upper(), msg)
tpbat_notification = naughty.notify({
preset = { fg = beautiful.fg_normal },
text = str,
timeout = t_out
})
end
function tpbat.register(args)
local args = args or {}
local timeout = args.timeout or 30
local battery = args.battery or "BAT0"
local settings = args.settings or function() end
tpbat.bat = smapi:battery(battery) -- Create a new battery
local bat = tpbat.bat
tpbat.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"
}
if bat:get('state') == nil
then
local n = naughty.notify({
preset = bat_notification_low_preset,
title = "SMAPI Battery Warning: Unable to read battery state!",
text = "This widget is intended for ThinkPads. Is tp_smapi installed? Check your configs & paths."
})
end
function update()
bat_now = {
status = "Not present",
perc = "N/A",
time = "N/A",
watt = "N/A"
}
if bat:installed()
then
bat_now.status = bat:status() or "N/A"
bat_now.perc = bat:percent()
bat_now.time = bat:remaining_time()
-- bat_now.watt = string.format("%.2fW", (VOLTS * AMPS) / 1e12)
-- notifications for low and critical states (when discharging)
if bat_now.status == "discharging"
then
if bat_now.perc <= 5
then
tpbat.id = naughty.notify({
preset = bat_notification_critical_preset,
replaces_id = tpbat.id
}).id
elseif bat_now.perc <= 15
then
tpbat.id = naughty.notify({
preset = bat_notification_low_preset,
replaces_id = tpbat.id
}).id
end
end
bat_now.perc = tostring(bat_now.perc)
end
widget = tpbat.widget
settings()
end
newtimer("tpbat", timeout, update)
widget:connect_signal('mouse::enter', function () tpbat:show() end)
widget:connect_signal('mouse::leave', function () tpbat:hide() end)
return tpbat.widget
end
return setmetatable(tpbat, { __call = function(_, ...) return tpbat.register(...) end })
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