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65a2b33018ea043e6c2458030058e00096fcc9b8
[etc/awesome.git] / widgets / alsabar.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013, Luke Bonham                     
6       * (c) 2013, Rman                            
7                                                   
8 --]]
9
10 local newtimer     = require("lain.helpers").newtimer
11
12 local awful        = require("awful")
13 local beautiful    = require("beautiful")
14 local naughty      = require("naughty")
15
16 local io           = { popen  = io.popen }
17 local math         = { modf   = math.modf }
18 local string       = { format = string.format,
19                        match  = string.match,
20                        rep    = string.rep }
21 local tonumber     = tonumber
22
23 local setmetatable = setmetatable
24
25 -- ALSA volume bar
26 -- lain.widgets.alsabar
27 local alsabar = {
28     channel = "Master",
29     step    = "5%",
30
31     colors = {
32         background = beautiful.bg_normal,
33         mute       = "#EB8F8F",
34         unmute     = "#A4CE8A"
35     },
36
37     terminal = terminal or "xterm",
38     mixer    = terminal .. " -e alsamixer",
39
40     notifications = {
41         font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
42         font_size = "11",
43         color     = beautiful.fg_normal,
44         bar_size  = 18,
45         screen    = 1
46     },
47
48     _current_level = 0,
49     _muted         = false
50 }
51
52 function alsabar.notify()
53     alsabar.update()
54
55     local preset = {
56         title   = "",
57         text    = "",
58         timeout = 4,
59         screen  = alsabar.notifications.screen,
60         font    = alsabar.notifications.font .. " " ..
61                   alsabar.notifications.font_size,
62         fg      = alsabar.notifications.color
63     }
64
65     if alsabar._muted
66     then
67         preset.title = alsabar.channel .. " - Muted"
68     else
69         preset.title = alsabar.channel .. " - " .. alsabar._current_level .. "%"
70     end
71
72     int = math.modf((alsabar._current_level / 100) * alsabar.notifications.bar_size)
73     preset.text = "["
74                 .. string.rep("|", int)
75                 .. string.rep(" ", alsabar.notifications.bar_size - int)
76                 .. "]"
77
78     if alsabar._notify ~= nil then
79         alsabar._notify = naughty.notify ({
80             replaces_id = alsabar._notify.id,
81             preset      = preset,
82         })
83     else
84         alsabar._notify = naughty.notify ({
85             preset = preset,
86         })
87     end
88 end
89
90 local function worker(args)
91     local args = args or {}
92     local timeout = args.timeout or 4
93     local settings = args.settings or function() end
94     local width = args.width or 63
95     local height = args.heigth or 1
96     local ticks = args.ticks or false
97     local ticks_size = args.ticks_size or 7
98     local vertical = args.vertical or false
99
100     alsabar.channel = args.channel or alsabar.channel
101     alsabar.step = args.step or alsabar.step
102     alsabar.colors = args.colors or alsabar.colors
103     alsabar.notifications = args.notifications or alsabar.notifications
104
105     alsabar.bar = awful.widget.progressbar()
106
107     alsabar.bar:set_background_color(alsabar.colors.background)
108     alsabar.bar:set_color(alsabar.colors.unmute)
109     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
110     alsabar.bar:set_width(width)
111     alsabar.bar:set_height(height)
112     alsabar.bar:set_ticks(ticks)
113     alsabar.bar:set_ticks_size(ticks_size)
114     alsabar.bar:set_vertical(vertical)
115
116     function alsabar.update()
117         -- Get mixer control contents
118         local f = io.popen("amixer -M get " .. alsabar.channel)
119         local mixer = f:read("*a")
120         f:close()
121
122         -- Capture mixer control state:          [5%] ... ... [on]
123         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
124
125         if volu == nil then
126             volu = 0
127             mute = "off"
128         end
129
130         alsabar._current_level = tonumber(volu)
131         alsabar.bar:set_value(alsabar._current_level / 100)
132
133         if not mute and tonumber(volu) == 0 or mute == "off"
134         then
135             alsabar._muted = true
136             alsabar.tooltip:set_text (" [Muted] ")
137             alsabar.bar:set_color(alsabar.colors.mute)
138         else
139             alsabar._muted = false
140             alsabar.tooltip:set_text(string.format(" %s:%s ", alsabar.channel, volu))
141             alsabar.bar:set_color(alsabar.colors.unmute)
142         end
143
144         volume_now = {}
145         volume_now.level = tonumber(volu)
146         volume_now.status = mute
147         settings()
148     end
149
150     newtimer("alsabar", timeout, alsabar.update)
151
152     alsabar.bar:buttons (awful.util.table.join (
153           awful.button ({}, 1, function()
154             awful.util.spawn(alsabar.mixer)
155           end),
156           awful.button ({}, 3, function()
157             awful.util.spawn(string.format("amixer set %s toggle", alsabar.channel))
158             alsabar.update()
159           end),
160           awful.button ({}, 4, function()
161             awful.util.spawn(string.format("amixer set %s %s+", alsabar.channel, alsabar.step))
162             alsabar.update()
163           end),
164           awful.button ({}, 5, function()
165             awful.util.spawn(string.format("amixer set %s %s-", alsabar.channel, alsabar.step))
166             alsabar.update()
167           end)
168     ))
169
170     return alsabar
171 end
172
173 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })