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e96658b0ee02f6dd2e18036cf1d013497ac21ec9
[etc/awesome.git] / widget / 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.widget.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 factory(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 scallback  = args.scallback
45
46     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'"
47     pulsebar.sink          = args.sink or 0
48     pulsebar.colors        = args.colors or pulsebar.colors
49     pulsebar.followtag     = args.followtag or false
50     pulsebar.notifications = args.notification_preset
51
52     if not pulsebar.notification_preset then
53         pulsebar.notification_preset      = {}
54         pulsebar.notification_preset.font = "Monospace 10"
55     end
56
57     pulsebar.bar = wibox.widget {
58         forced_height    = height,
59         forced_width     = width,
60         color            = pulsebar.colors.unmute,
61         background_color = pulsebar.colors.background,
62         margins          = 1,
63         paddings         = 1,
64         ticks            = ticks,
65         ticks_size       = ticks_size,
66         widget           = wibox.widget.progressbar,
67     }
68
69     pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
70
71     function pulsebar.update(callback)
72         if scallback then pulseaudio.cmd = scallback() end
73
74         helpers.async({ awful.util.shell, "-c", pulsebar.cmd }, function(s)
75             volume_now = {
76                 index = string.match(s, "index: (%S+)") or "N/A",
77                 sink  = string.match(s, "device.string = \"(%S+)\"") or "N/A",
78                 muted = string.match(s, "muted: (%S+)") or "N/A"
79             }
80
81             local ch = 1
82             volume_now.channel = {}
83             for v in string.gmatch(s, ":.-(%d+)%%") do
84               volume_now.channel[ch] = v
85               ch = ch + 1
86             end
87
88             volume_now.left  = volume_now.channel[1] or "N/A"
89             volume_now.right = volume_now.channel[2] or "N/A"
90
91             local volu = volume_now.left
92             local mute = volume_now.muted
93
94             if (volu and volu ~= pulsebar._current_level) or (mute and mute ~= pulsebar._muted) then
95                 pulsebar._current_level = volu
96                 pulsebar.bar:set_value(pulsebar._current_level / 100)
97                 if (not mute and volu == 0) or mute == "yes" then
98                     pulsebar._muted = true
99                     pulsebar.tooltip:set_text ("[Muted]")
100                     pulsebar.bar.color = pulsebar.colors.mute
101                 else
102                     pulsebar._muted = false
103                     pulsebar.tooltip:set_text(string.format("%s: %s", pulsebar.sink, volu))
104                     pulsebar.bar.color = pulsebar.colors.unmute
105                 end
106
107                 settings()
108
109                 if type(callback) == "function" then callback() end
110             end
111         end)
112     end
113
114     function pulsebar.notify()
115         pulsebar.update(function()
116             local preset = pulsebar.notification_preset
117
118             if pulsebar._muted then
119                 preset.title = string.format("Sink %s - Muted", pulsebar.sink)
120             else
121                 preset.title = string.format("%s - %s%%", pulsebar.sink, pulsebar._current_level)
122             end
123
124             int = math.modf((pulsebar._current_level / 100) * awful.screen.focused().mywibox.height)
125             preset.text = string.format("[%s%s]", string.rep("|", int),
126                           string.rep(" ", awful.screen.focused().mywibox.height - int))
127
128             if pulsebar.followtag then preset.screen = awful.screen.focused() end
129
130             if not pulsebar.notification then
131                 pulsebar.notification = naughty.notify {
132                     preset  = preset,
133                     destroy = function() pulsebar.notification = nil end
134                 }
135             else
136                 naughty.replace_text(pulsebar.notification, preset.title, preset.text)
137             end
138         end)
139     end
140
141     helpers.newtimer(string.format("pulsebar-%s", pulsebar.sink), timeout, pulsebar.update)
142
143     return pulsebar
144 end
145
146 return setmetatable(pulsebar, { __call = function(_, ...) return factory(...) end })