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wiki updated
[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 helpers      = require("lain.helpers")
11 local awful        = require("awful")
12 local naughty      = require("naughty")
13 local wibox        = require("wibox")
14 local math         = { modf   = math.modf }
15 local string       = { format = string.format,
16                        match  = string.match,
17                        rep    = string.rep }
18 local tonumber     = tonumber
19 local setmetatable = setmetatable
20
21 -- ALSA volume bar
22 -- lain.widgets.alsabar
23 local alsabar = {
24     colors = {
25         background = "#000000",
26         mute       = "#EB8F8F",
27         unmute     = "#A4CE8A"
28     },
29
30     _current_level = 0,
31     _muted         = false
32 }
33
34 local function worker(args)
35     local args       = args or {}
36     local timeout    = args.timeout or 5
37     local settings   = args.settings or function() end
38     local width      = args.width or 63
39     local height     = args.height or 1
40     local ticks      = args.ticks or false
41     local ticks_size = args.ticks_size or 7
42     local vertical   = args.vertical or false
43
44     alsabar.cmd                 = args.cmd or "amixer"
45     alsabar.channel             = args.channel or "Master"
46     alsabar.colors              = args.colors or alsabar.colors
47     alsabar.followtag           = args.followtag or false
48     alsabar._notify             = args.notify or "on"
49     alsabar.notification_preset = args.notification_preset
50
51     if not alsabar.notification_preset then
52         alsabar.notification_preset      = naughty.config.defaults
53         alsabar.notification_preset.font = "Monospace 11"
54     end
55
56     alsabar.bar = wibox.widget {
57         forced_height    = height,
58         forced_width     = width,
59         color            = alsabar.colors.unmute,
60         background_color = alsabar.colors.background,
61         margins          = 1,
62         paddings         = 1,
63         ticks            = ticks,
64         ticks_size       = ticks_size,
65         widget           = wibox.widget.progressbar,
66         layout           = vertical and wibox.container.rotate
67     }
68
69     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
70
71     function alsabar.update()
72         helpers.async(alsabar.cmd, function(mixer)
73             local volu,mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
74             if (volu and tonumber(volu) ~= alsabar._current_level) or (mute and string.match(mute, "on") ~= alsabar._muted) then
75                 alsabar._current_level = tonumber(volu) or alsabar._current_level
76                 alsabar.bar:set_value(alsabar._current_level / 100)
77                 if (not mute and tonumber(volu) == 0) or mute == "off" then
78                     alsabar._muted = true
79                     alsabar.tooltip:set_text ("[Muted]")
80                     alsabar.bar.color = alsabar.colors.mute
81                 else
82                     alsabar._muted = false
83                     alsabar.tooltip:set_text(string.format("%s: %s", alsabar.channel, volu))
84                     alsabar.bar.color = alsabar.colors.unmute
85                 end
86
87                 volume_now = {}
88                 volume_now.level = tonumber(volu)
89                 volume_now.status = mute
90
91                 settings()
92             end
93         end)
94     end
95
96     function alsabar.notify()
97         alsabar.update(function()
98             local preset = alsabar.notification_preset
99
100             if alsabar._muted then
101                 preset.title = string.format("%s - Muted", alsabar.channel)
102             else
103                 preset.title = string.format("%s - %s%%", alsabar.channel, alsabar._current_level)
104             end
105
106             int = math.modf((alsabar._current_level / 100) * awful.screen.focused().mywibox.height)
107             preset.text = string.format("[%s%s]", string.rep("|", int),
108                           string.rep(" ", awful.screen.focused().mywibox.height - int))
109
110             if alsabar.followtag then preset.screen = awful.screen.focused() end
111
112             alsabar.id = naughty.notify ({
113                 replaces_id = alsabar.id,
114                 preset      = preset
115             }).id
116         end)
117     end
118
119     timer_id = string.format("alsabar-%s-%s", alsabar.cmd, alsabar.channel)
120
121     helpers.newtimer(timer_id, timeout, alsabar.update)
122
123     return alsabar
124 end
125
126 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })