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Updated bat (markdown)
[etc/awesome.git] / widgets / contrib / tpbat / init.lua
1
2 --[[
3                                                                
4      tpbat.lua                                                 
5      Battery status widget for ThinkPad laptops that use SMAPI 
6      lain.widgets.contrib.tpbat                                
7                                                                
8      More on tp_smapi: http://www.thinkwiki.org/wiki/Tp_smapi  
9                                                                
10      Licensed under GNU General Public License v2              
11       * (c) 2013,      Conor Heine                             
12       * (c) 2013,      Luke Bonham                             
13       * (c) 2010-2012, Peter Hofmann                           
14                                                                
15 --]]
16
17 local debug        = { getinfo = debug.getinfo }
18 local newtimer     = require("lain.helpers").newtimer
19 local first_line   = require("lain.helpers").first_line
20 local beautiful    = require("beautiful")
21 local naughty      = require("naughty")
22 local wibox        = require("wibox")
23
24 local string       = { format = string.format }
25 local math         = { floor = math.floor }
26 local tostring     = tostring
27 local setmetatable = setmetatable
28
29 package.path       = debug.getinfo(1,"S").source:match[[^@?(.*[\/])[^\/]-$]] .. "?.lua;" .. package.path
30 local smapi        = require("smapi")
31
32 -- ThinkPad SMAPI-enabled battery info widget
33 -- lain.widgets.contrib.tpbat
34 local tpbat = { }
35 local tpbat_notification = nil
36
37 function tpbat:hide()
38     if tpbat_notification ~= nil
39     then
40         naughty.destroy(tpbat_notification)
41         tpbat_notification = nil
42     end
43 end
44
45 function tpbat:show(t_out)
46     tpbat:hide()
47
48     local bat   = self.bat
49     local t_out = t_out or 0
50
51     if bat == nil or not bat:installed() then return end
52
53     local mfgr   = bat:get('manufacturer') or "no_mfgr"
54     local model  = bat:get('model') or "no_model"
55     local chem   = bat:get('chemistry') or "no_chem"
56     local status = bat:get('state') or "nil"
57     local time   = bat:remaining_time()
58     local msg    = "\t"
59
60     if status ~= "idle" and status ~= "nil"
61     then
62         if time == "N/A"
63         then
64             msg = "...Calculating time remaining..."
65         else
66             msg = time .. (status == "charging" and " until charged" or " remaining")
67         end
68     else
69         msg = "On AC Power"
70     end
71
72     local str = string.format("%s : %s %s (%s)\n", bat.name, mfgr, model, chem)
73                 .. string.format("\n%s \t\t\t %s", status:upper(), msg)
74
75     tpbat_notification = naughty.notify({
76         preset = { fg = beautiful.fg_normal },
77         text = str,
78         timeout = t_out
79     })
80 end
81
82 function tpbat.register(args)
83     local args = args or {}
84     local timeout = args.timeout or 30
85     local battery = args.battery or "BAT0"
86     local settings = args.settings or function() end
87
88     tpbat.bat = smapi:battery(battery) -- Create a new battery
89     local bat = tpbat.bat
90
91     tpbat.widget = wibox.widget.textbox('')
92
93     if bat:get('state') == nil
94     then
95         local n = naughty.notify({
96             title = "SMAPI Battery Warning: Unable to read battery state!",
97             text = "This widget is intended for ThinkPads. Is tp_smapi installed? Check your configs & paths.",
98             position = "top_right",
99             timeout = 15,
100             fg="#202020",
101             bg="#cdcdcd",
102             ontop = true
103         })
104     end
105
106     function update()
107         bat_now = {
108             status = "Not present",
109             perc   = "N/A",
110             time   = "N/A",
111             watt   = "N/A"
112         }
113
114         if bat:installed()
115         then
116             bat_now.status = bat:status() or "N/A"
117             bat_now.perc   = bat:percent()
118             bat_now.time   = bat:remaining_time()
119             -- bat_now.watt = string.format("%.2fW", (VOLTS * AMPS) / 1e12)
120
121             -- notifications for low and critical states (when discharging)
122             if bat_now.status == "discharging"
123             then
124                 if bat_now.perc <= 5
125                 then
126                     tpbat.id = naughty.notify({
127                         text = "shutdown imminent",
128                         title = "battery nearly exhausted",
129                         position = "top_right",
130                         timeout = 15,
131                         fg="#000000",
132                         bg="#ffffff",
133                         ontop = true,
134                         replaces_id = tpbat.id
135                     }).id
136                 elseif bat_now.perc <= 15
137                 then
138                     tpbat.id = naughty.notify({
139                         text = "plug the cable",
140                         title = "battery low",
141                         position = "top_right",
142                         timeout = 15,
143                         fg="#202020",
144                         bg="#cdcdcd",
145                         ontop = true,
146                         replaces_id = tpbat.id
147                     }).id
148                 end
149             end
150
151             bat_now.perc = tostring(bat_now.perc)
152         end
153
154         widget = tpbat.widget
155         settings()
156     end
157
158     newtimer("tpbat", timeout, update)
159
160     widget:connect_signal('mouse::enter', function () tpbat:show() end)
161     widget:connect_signal('mouse::leave', function () tpbat:hide() end)
162
163     return tpbat.widget
164 end
165
166 return setmetatable(tpbat, { __call = function(_, ...) return tpbat.register(...) end })