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fc45c726488eb82b17a6fd9d6354f4fdaee19639
[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 local read_pipe    = require("lain.helpers").read_pipe
12
13 local awful        = require("awful")
14 local beautiful    = require("beautiful")
15 local naughty      = require("naughty")
16
17 local math         = { modf   = math.modf }
18 local mouse        = mouse
19 local string       = { format = string.format,
20                        match  = string.match,
21                        rep    = string.rep }
22 local tonumber     = tonumber
23
24 local setmetatable = setmetatable
25
26 -- ALSA volume bar
27 -- lain.widgets.alsabar
28 local alsabar = {
29     channel = "Master",
30     step    = "2%",
31
32     colors = {
33         background = beautiful.bg_normal,
34         mute       = "#EB8F8F",
35         unmute     = "#A4CE8A"
36     },
37
38     terminal = terminal or "xterm",
39     mixer    = terminal .. " -e alsamixer",
40
41     notifications = {
42         font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
43         font_size = "11",
44         color     = beautiful.fg_normal,
45         bar_size  = 18,
46         screen    = 1
47     },
48
49     _current_level = 0,
50     _muted         = false,
51     _status        = "off"
52 }
53
54 function alsabar.notify()
55     alsabar.update()
56
57     local preset = {
58         title   = "",
59         text    = "",
60         timeout = 1,
61         screen  = alsabar.notifications.screen,
62         font    = alsabar.notifications.font .. " " ..
63                   alsabar.notifications.font_size,
64         fg      = alsabar.notifications.color
65     }
66
67     if alsabar._muted
68     then
69         preset.title = alsabar.channel .. " - Muted"
70     else
71         preset.title = alsabar.channel .. " - " .. alsabar._current_level .. "%"
72     end
73
74     int = math.modf((alsabar._current_level / 100) * alsabar.notifications.bar_size)
75     preset.text = "["
76                 .. string.rep("|", int)
77                 .. string.rep(" ", alsabar.notifications.bar_size - int)
78                 .. "]"
79
80     if alsabar.followmouse then
81         preset.screen = mouse.screen
82     end
83
84     if alsabar._notify ~= nil then
85         alsabar._notify = naughty.notify ({
86             replaces_id = alsabar._notify.id,
87             preset      = preset,
88         })
89     else
90         alsabar._notify = naughty.notify ({
91             preset = preset,
92         })
93     end
94 end
95
96 local function worker(args)
97     local args       = args or {}
98     local timeout    = args.timeout or 1
99     local settings   = args.settings or function() end
100     local width      = args.width or 63
101     local height     = args.heigth or 1
102     local ticks      = args.ticks or false
103     local ticks_size = args.ticks_size or 7
104     local vertical   = args.vertical or false
105
106     alsabar.cmd           = args.cmd or "amixer"
107     alsabar.channel       = args.channel or alsabar.channel
108     alsabar.step          = args.step or alsabar.step
109     alsabar.colors        = args.colors or alsabar.colors
110     alsabar.notifications = args.notifications or alsabar.notifications
111     alsabar.followmouse   = args.followmouse or false
112
113     alsabar.bar = awful.widget.progressbar()
114
115     alsabar.bar:set_background_color(alsabar.colors.background)
116     alsabar.bar:set_color(alsabar.colors.unmute)
117     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
118     alsabar.bar:set_width(width)
119     alsabar.bar:set_height(height)
120     alsabar.bar:set_ticks(ticks)
121     alsabar.bar:set_ticks_size(ticks_size)
122     alsabar.bar:set_vertical(vertical)
123
124     function alsabar.update()
125         -- Get mixer control contents
126         local mixer = read_pipe(string.format("%s get %s", alsabar.cmd, alsabar.channel))
127
128         -- Capture mixer control state:          [5%] ... ... [on]
129         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
130
131         volu = tonumber(volu) or 0
132         if mute == "" then mute = "off"
133
134         if alsabar._current_level ~= volu or alsabar._status ~= mute then
135
136             alsabar._current_level = volu
137             alsabar._status = mute
138
139             alsabar.bar:set_value(alsabar._current_level / 100)
140
141             if not mute and volu == 0 or mute == "off"
142             then
143                 alsabar._muted = true
144                 alsabar.tooltip:set_text (" [Muted] ")
145                 alsabar.bar:set_color(alsabar.colors.mute)
146             else
147                 alsabar._muted = false
148                 alsabar.tooltip:set_text(string.format(" %s:%s ", alsabar.channel, volu))
149                 alsabar.bar:set_color(alsabar.colors.unmute)
150             end
151
152             volume_now = {}
153             volume_now.level = volu
154             volume_now.status = mute
155
156             settings()
157         end
158     end
159
160     alsabar.bar:buttons (awful.util.table.join (
161           awful.button ({}, 1, function()
162             awful.util.spawn(alsabar.mixer)
163           end),
164           awful.button ({}, 3, function()
165             awful.util.spawn(string.format("%s set %s toggle", alsabar.cmd, alsabar.channel))
166             alsabar.update()
167           end),
168           awful.button ({}, 4, function()
169             awful.util.spawn(string.format("%s set %s %s+", alsabar.cmd, alsabar.channel, alsabar.step))
170             alsabar.update()
171           end),
172           awful.button ({}, 5, function()
173             awful.util.spawn(string.format("%s set %s %s-", alsabar.cmd, alsabar.channel, alsabar.step))
174             alsabar.update()
175           end)
176     ))
177
178     timer_id = string.format("alsabar-%s-%s", alsabar.cmd, alsabar.channel)
179
180     newtimer(timer_id, timeout, alsabar.update)
181
182     return alsabar
183 end
184
185 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })