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wiki updated
[etc/awesome.git] / widgets / pulsebar.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                        gmatch = string.gmatch,
17                        match  = string.match,
18                        rep    = string.rep }
19 local type         = type
20 local tonumber     = tonumber
21 local setmetatable = setmetatable
22
23 -- Pulseaudio volume bar
24 -- lain.widgets.pulsebar
25 local pulsebar = {
26     colors = {
27         background = "#000000",
28         mute       = "#EB8F8F",
29         unmute     = "#A4CE8A"
30     },
31
32     _current_level = 0,
33     _muted         = false
34 }
35
36 local function worker(args)
37     local args       = args or {}
38     local timeout    = args.timeout or 5
39     local settings   = args.settings or function() end
40     local width      = args.width or 63
41     local height     = args.heigth or 1
42     local ticks      = args.ticks or false
43     local ticks_size = args.ticks_size or 7
44     local vertical   = args.vertical or false
45     local scallback  = args.scallback
46
47     pulsebar.cmd           = args.cmd or "pacmd list-sinks | sed -n -e '0,/*/d' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p' -e '/device\\.string/p'"
48     pulsebar.sink          = args.sink or 0
49     pulsebar.colors        = args.colors or pulsebar.colors
50     pulsebar.followtag     = args.followtag or false
51     pulsebar.notifications = args.notification_preset
52
53     if not pulsebar.notification_preset then
54         pulsebar.notification_preset      = {}
55         pulsebar.notification_preset.font = "Monospace 10"
56     end
57
58     pulsebar.bar = wibox.widget {
59         forced_height    = height,
60         forced_width     = width,
61         color            = pulsebar.colors.unmute,
62         background_color = pulsebar.colors.background,
63         margins          = 1,
64         paddings         = 1,
65         ticks            = ticks,
66         ticks_size       = ticks_size,
67         widget           = wibox.widget.progressbar,
68         layout           = vertical and wibox.container.rotate
69     }
70
71     pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
72
73     function pulsebar.update(callback)
74         if scallback then pulseaudio.cmd = scallback() end
75
76         helpers.async({ awful.util.shell, "-c", pulsebar.cmd }, function(s)
77             volume_now = {
78                 index = string.match(s, "index: (%S+)") or "N/A",
79                 sink  = string.match(s, "device.string = \"(%S+)\"") or "N/A",
80                 muted = string.match(s, "muted: (%S+)") or "N/A"
81             }
82
83             local ch = 1
84             volume_now.channel = {}
85             for v in string.gmatch(s, ":.-(%d+)%%") do
86               volume_now.channel[ch] = v
87               ch = ch + 1
88             end
89
90             volume_now.left  = volume_now.channel[1] or "N/A"
91             volume_now.right = volume_now.channel[2] or "N/A"
92
93             local volu = volume_now.left
94             local mute = volume_now.muted
95
96             if (volu and volu ~= pulsebar._current_level) or (mute and mute ~= pulsebar._muted) then
97                 pulsebar._current_level = volu
98                 pulsebar.bar:set_value(pulsebar._current_level / 100)
99                 if (not mute and volu == 0) or mute == "yes" then
100                     pulsebar._muted = true
101                     pulsebar.tooltip:set_text ("[Muted]")
102                     pulsebar.bar.color = pulsebar.colors.mute
103                 else
104                     pulsebar._muted = false
105                     pulsebar.tooltip:set_text(string.format("%s: %s", pulsebar.sink, volu))
106                     pulsebar.bar.color = pulsebar.colors.unmute
107                 end
108
109                 settings()
110
111                 if type(callback) == "function" then callback() end
112             end
113         end)
114     end
115
116     function pulsebar.notify()
117         pulsebar.update(function()
118             local preset = pulsebar.notification_preset
119
120             if pulsebar._muted then
121                 preset.title = string.format("Sink %s - Muted", pulsebar.sink)
122             else
123                 preset.title = string.format("%s - %s%%", pulsebar.sink, pulsebar._current_level)
124             end
125
126             int = math.modf((pulsebar._current_level / 100) * awful.screen.focused().mywibox.height)
127             preset.text = string.format("[%s%s]", string.rep("|", int),
128                           string.rep(" ", awful.screen.focused().mywibox.height - int))
129
130             if pulsebar.followtag then preset.screen = awful.screen.focused() end
131
132             if not pulsebar.notification then
133                 pulsebar.notification = naughty.notify {
134                     preset  = preset,
135                     destroy = function() pulsebar.notification = nil end
136                 }
137             else
138                 naughty.replace_text(pulsebar.notification, preset.title, preset.text)
139             end
140         end)
141     end
142
143     helpers.newtimer(string.format("pulsebar-%s", pulsebar.sink), timeout, pulsebar.update)
144
145     return pulsebar
146 end
147
148 return setmetatable(pulsebar, { __call = function(_, ...) return worker(...) end })