mirror of https://github.com/lcpz/lain.git
Merge pull request #5 from cahna/tp-bat-contrib
ThinkPad Battery Widget added
This commit is contained in:
Luke Bonham
commit
356705836a
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--[[
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tpbat.lua
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Battery status widget for ThinkPad laptops that use SMAPI
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lain.widgets.contrib.tpbat
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More on tp_smapi: http://www.thinkwiki.org/wiki/Tp_smapi
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Licensed under GNU General Public License v2
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* (c) 2013, Conor Heine
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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 beautiful = require("beautiful")
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local naughty = require("naughty")
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local wibox = require("wibox")
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local smapi = require("lain.widgets.contrib.tpbat.smapi") -- Ugly :(
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local string = { format = string.format }
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local math = { floor = math.floor }
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local tostring = tostring
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local setmetatable = setmetatable
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-- ThinkPad SMAPI-enabled battery info widget
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local tpbat = { }
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local tpbat_notification = nil
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function tpbat:hide()
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if tpbat_notification ~= nil
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then
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naughty.destroy(tpbat_notification)
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tpbat_notification = nil
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end
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end
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function tpbat:show(t_out)
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tpbat:hide()
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local bat = self.bat
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if bat == nil or not bat:installed() then return end
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local mfgr = bat:get('manufacturer') or "no_mfgr"
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local model = bat:get('model') or "no_model"
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local chem = bat:get('chemistry') or "no_chem"
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local status = bat:get('state') or "nil"
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local time = bat:remaining_time()
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local msg = "\t"
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if status ~= "idle" and status ~= "nil"
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then
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if time == "N/A"
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then
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msg = "...Calculating time remaining..."
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else
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msg = time .. (status == "charging" and " until charged" or " remaining")
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end
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else
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msg = "On AC Power"
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end
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local str = string.format("%s : %s %s (%s)\n", bat.name, mfgr, model, chem)
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str = str .. string.format("\n%s \t\t\t %s", status:upper(), msg)
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tpbat_notification = naughty.notify({
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preset = { fg = beautiful.fg_normal },
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text = str,
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timeout = t_out
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})
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end
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function tpbat.register(args)
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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 settings = args.settings or function() end
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tpbat.bat = smapi:battery(battery) -- Create a new battery
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local bat = tpbat.bat
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tpbat.widget = wibox.widget.textbox('')
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if bat:get('state') == nil
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then
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local n = naughty.notify({
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title = "SMAPI Battery Warning: Unable to read battery state!",
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text = "This widget is intended for ThinkPads. Is tp_smapi installed? Check your configs & paths.",
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position = "top_right",
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timeout = 15,
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fg="#202020",
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bg="#cdcdcd",
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ontop = true
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})
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end
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function update()
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bat_now = {
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status = "Not present",
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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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if bat:installed()
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then
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bat_now.status = bat:status()
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bat_now.perc = bat:percent()
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bat_now.time = bat:remaining_time()
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-- bat_now.watt = string.format("%.2fW", (VOLTS * AMPS) / 1e12)
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-- notifications for low and critical states
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if bat_now.perc <= 5
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then
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tpbat.id = naughty.notify({
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text = "shutdown imminent",
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title = "battery nearly exhausted",
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position = "top_right",
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timeout = 15,
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fg="#000000",
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bg="#ffffff",
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ontop = true,
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replaces_id = tpbat.id
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}).id
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elseif bat_now.perc <= 15
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then
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tpbat.id = naughty.notify({
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text = "plug the cable",
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title = "battery low",
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position = "top_right",
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timeout = 15,
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fg="#202020",
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bg="#cdcdcd",
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ontop = true,
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replaces_id = tpbat.id
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}).id
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end
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bat_now.perc = tostring(bat_now.perc)
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end
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widget = tpbat.widget -- 'widget' needed in rc.lua (following convention)
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settings()
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end
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newtimer("tpbat", timeout, update)
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widget:connect_signal('mouse::enter', function () tpbat:show(0) end)
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widget:connect_signal('mouse::leave', function () tpbat:hide() end)
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return tpbat.widget
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end
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return setmetatable(tpbat, { __call = function(_, ...) return tpbat.register(...) end })
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@ -0,0 +1,100 @@
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--[[
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smapi.lua
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Interface with thinkpad battery information
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Licensed under GNU General Public License v2
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* (c) 2013, Conor Heine
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--]]
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local first_line = require("lain.helpers").first_line
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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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local smapi = {}
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local apipath = "/sys/devices/platform/smapi"
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-- Most are readable values, but some can be written to (not implemented, yet?)
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local readable = {
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barcoding = true,
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charging_max_current = true,
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charging_max_voltage = true,
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chemistry = true,
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current_avg = true,
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current_now = true,
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cycle_count = true,
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design_capacity = true,
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design_voltage = true,
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dump = true,
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first_use_date = true,
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force_discharge = false,
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group0_voltage = true,
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group1_voltage = true,
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group2_voltage = true,
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group3_voltage = true,
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inhibit_charge_minutes = false,
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installed = true,
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last_full_capacity = true,
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manufacture_date = true,
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manufacturer = true,
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model = true,
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power_avg = true,
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power_now = true,
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remaining_capacity = true,
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remaining_charging_time = true,
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remaining_percent = true,
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remaining_percent_error = true,
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remaining_running_time = true,
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remaining_running_time_now = true,
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serial = true,
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start_charge_thresh = false,
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state = true,
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stop_charge_thresh = false,
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temperature = true,
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voltage = true,
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}
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function smapi:battery(name)
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local bat = {}
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bat.name = name
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bat.path = apipath .. "/" .. name
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function bat:get(item)
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return self.path ~= nil and readable[item] and first_line(self.path .. "/" .. item) or nil
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end
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function bat:installed()
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return self:get("installed") == "1"
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end
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function bat:status()
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return self:get('state')
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end
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-- Remaining time can either be time until battery dies or time until charging completes
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function bat:remaining_time()
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local time_val = bat_now.status == 'discharging' and 'remaining_running_time' or 'remaining_charging_time'
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local mins_left = self:get(time_val)
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if mins_left:find("^%d+") == nil
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then
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return "N/A"
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end
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local hrs = mins_left / 60
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local min = mins_left % 60
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return string.format("%02d:%02d", hrs, min)
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end
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function bat:percent()
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return tonumber(self:get("remaining_percent"))
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end
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return setmetatable(bat, {__metatable = false, __newindex = false})
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end
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return smapi
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