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2cf1c2957042eea7fce1b55883417231b7b0893d
[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    = "2%",
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 = 5,
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 5
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.cmd           = args.cmd or "amixer"
101     alsabar.channel       = args.channel or alsabar.channel
102     alsabar.step          = args.step or alsabar.step
103     alsabar.colors        = args.colors or alsabar.colors
104     alsabar.notifications = args.notifications or alsabar.notifications
105
106     alsabar.bar = awful.widget.progressbar()
107
108     alsabar.bar:set_background_color(alsabar.colors.background)
109     alsabar.bar:set_color(alsabar.colors.unmute)
110     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
111     alsabar.bar:set_width(width)
112     alsabar.bar:set_height(height)
113     alsabar.bar:set_ticks(ticks)
114     alsabar.bar:set_ticks_size(ticks_size)
115     alsabar.bar:set_vertical(vertical)
116
117     function alsabar.update()
118         -- Get mixer control contents
119         local f = assert(io.popen(string.format("%s get %s", alsabar.cmd, alsabar.channel)))
120         local mixer = f:read("*a")
121         f:close()
122
123         -- Capture mixer control state:          [5%] ... ... [on]
124         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
125
126         if volu == nil then
127             volu = 0
128             mute = "off"
129         end
130
131         alsabar._current_level = tonumber(volu)
132         alsabar.bar:set_value(alsabar._current_level / 100)
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     alsabar.bar:buttons (awful.util.table.join (
151           awful.button ({}, 1, function()
152             awful.util.spawn(alsabar.mixer)
153           end),
154           awful.button ({}, 3, function()
155             awful.util.spawn(string.format("%s set %s toggle", alsabar.cmd, alsabar.channel))
156             alsabar.update()
157           end),
158           awful.button ({}, 4, function()
159             awful.util.spawn(string.format("%s set %s %s+", alsabar.cmd, alsabar.channel, alsabar.step))
160             alsabar.update()
161           end),
162           awful.button ({}, 5, function()
163             awful.util.spawn(string.format("%s set %s %s-", alsabar.cmd, alsabar.channel, alsabar.step))
164             alsabar.update()
165           end)
166     ))
167
168     timer_id = string.format("alsabar-%s-%s", alsabar.cmd, alsabar.channel)
169
170     newtimer(timer_id, timeout, alsabar.update)
171
172     return alsabar
173 end
174
175 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })