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[etc/awesome.git] / widget / pulsebar.lua
1 --[[
2
3      Licensed under GNU General Public License v2
4       * (c) 2013, Luke Bonham
5       * (c) 2013, Rman
6
7 --]]
8
9 local helpers        = require("lain.helpers")
10 local awful          = require("awful")
11 local naughty        = require("naughty")
12 local wibox          = require("wibox")
13 local math           = { modf   = math.modf }
14 local string         = { format = string.format,
15                          match  = string.match,
16                          gmatch = string.gmatch,
17                          rep    = string.rep }
18 local type, tonumber = type, tonumber
19
20 -- Pulseaudio volume bar
21 -- lain.widget.pulsebar
22
23 local function factory(args)
24     local pulsebar = {
25         colors = {
26             background = "#000000",
27             mute       = "#EB8F8F",
28             unmute     = "#A4CE8A"
29         },
30
31         _current_level = 0,
32         _mute          = "no",
33     }
34
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.heigth or 1
40     local ticks      = args.ticks or false
41     local ticks_size = args.ticks_size or 7
42     local scallback  = args.scallback
43
44     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'"
45     pulsebar.sink                = args.sink or 0
46     pulsebar.colors              = args.colors or pulsebar.colors
47     pulsebar.followtag           = args.followtag or false
48     pulsebar.notification_preset = args.notification_preset
49     pulsebar.device              = "N/A"
50
51     if not pulsebar.notification_preset then
52         pulsebar.notification_preset      = {}
53         pulsebar.notification_preset.font = "Monospace 10"
54     end
55
56     pulsebar.bar = wibox.widget {
57         forced_height    = height,
58         forced_width     = width,
59         color            = pulsebar.colors.unmute,
60         background_color = pulsebar.colors.background,
61         margins          = 1,
62         paddings         = 1,
63         ticks            = ticks,
64         ticks_size       = ticks_size,
65         widget           = wibox.widget.progressbar,
66     }
67
68     pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
69
70     function pulsebar.update(callback)
71         if scallback then pulsebar.cmd = scallback() end
72
73         helpers.async({ awful.util.shell, "-c", pulsebar.cmd }, function(s)
74             volume_now = {
75                 index = string.match(s, "index: (%S+)") or "N/A",
76                 sink  = string.match(s, "device.string = \"(%S+)\"") or "N/A",
77                 muted = string.match(s, "muted: (%S+)") or "N/A"
78             }
79
80             pulsebar.device = volume_now.index
81
82             local ch = 1
83             volume_now.channel = {}
84             for v in string.gmatch(s, ":.-(%d+)%%") do
85               volume_now.channel[ch] = v
86               ch = ch + 1
87             end
88
89             volume_now.left  = volume_now.channel[1] or "N/A"
90             volume_now.right = volume_now.channel[2] or "N/A"
91
92             local volu = volume_now.left
93             local mute = volume_now.muted
94
95             if volu:match("N/A") or mute:match("N/A") then return end
96
97             if volu ~= pulsebar._current_level or mute ~= pulsebar._mute then
98                 pulsebar._current_level = tonumber(volu)
99                 pulsebar.bar:set_value(pulsebar._current_level / 100)
100                 if pulsebar._current_level == 0 or mute == "yes" then
101                     pulsebar._mute = mute
102                     pulsebar.tooltip:set_text ("[Muted]")
103                     pulsebar.bar.color = pulsebar.colors.mute
104                 else
105                     pulsebar._mute = "no"
106                     pulsebar.tooltip:set_text(string.format("%s: %s", pulsebar.sink, volu))
107                     pulsebar.bar.color = pulsebar.colors.unmute
108                 end
109
110                 settings()
111
112                 if type(callback) == "function" then callback() end
113             end
114         end)
115     end
116
117     function pulsebar.notify()
118         pulsebar.update(function()
119             local preset = pulsebar.notification_preset
120
121             preset.title = string.format("Sink %s - %s%%", pulsebar.sink, pulsebar._current_level)
122
123             if pulsebar._mute == "yes" then
124                 preset.title = preset.title .. " Muted"
125             end
126
127             int = math.modf((pulsebar._current_level / 100) * awful.screen.focused().mywibox.height)
128             preset.text = string.format("[%s%s]", string.rep("|", int),
129                           string.rep(" ", awful.screen.focused().mywibox.height - int))
130
131             if pulsebar.followtag then preset.screen = awful.screen.focused() end
132
133             if not pulsebar.notification then
134                 pulsebar.notification = naughty.notify {
135                     preset  = preset,
136                     destroy = function() pulsebar.notification = nil end
137                 }
138             else
139                 naughty.replace_text(pulsebar.notification, preset.title, preset.text)
140             end
141         end)
142     end
143
144     helpers.newtimer(string.format("pulsebar-%s", pulsebar.sink), timeout, pulsebar.update)
145
146     return pulsebar
147 end
148
149 return factory