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bat: forgot to remove debug line; #209
[etc/awesome.git] / widgets / alsa.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013, Luke Bonham                     
6       * (c) 2010, Adrian C. <anrxc@sysphere.org>  
7                                                   
8 --]]
9
10 local newtimer     = require("lain.helpers").newtimer
11 local read_pipe    = require("lain.helpers").read_pipe
12
13 local wibox        = require("wibox")
14
15 local string       = { match  = string.match,
16                        format = string.format }
17
18 local setmetatable = setmetatable
19
20 -- ALSA volume
21 -- lain.widgets.alsa
22 local alsa = { last_level = "0", last_status = "" }
23
24 local function worker(args)
25     local args     = args or {}
26     local timeout  = args.timeout or 5
27     local settings = args.settings or function() end
28
29     alsa.cmd     = args.cmd or "amixer"
30     alsa.channel = args.channel or "Master"
31     alsa.widget  = wibox.widget.textbox('')
32
33     function alsa.update()
34         mixer = read_pipe(string.format("%s get %s", alsa.cmd, alsa.channel))
35         l,s   = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
36
37         if alsa.last_level ~= l or alsa.last_status ~= s then
38             volume_now = { level = l, status = s }
39             alsa.last_level  = l
40             alsa.last_status = s
41
42             widget = alsa.widget
43             settings()
44         end
45     end
46
47     timer_id = string.format("alsa-%s-%s", alsa.cmd, alsa.channel)
48     newtimer(timer_id, timeout, alsa.update)
49
50     return setmetatable(alsa, { __index = alsa.widget })
51 end
52
53 return setmetatable(alsa, { __call = function(_, ...) return worker(...) end })