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Sound and music player handling
[etc/awesome.git] / .config / awesome / lain / widget / pulsebar.lua
1 --[[
2
3      Licensed under GNU General Public License v2
4       * (c) 2013, Luca CPZ
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     = math
14 local string   = string
15 local type     = type
16 local tonumber = tonumber
17
18 -- PulseAudio volume bar
19 -- lain.widget.pulsebar
20
21 local function factory(args)
22     local pulsebar = {
23         colors = {
24             background = "#000000",
25             mute       = "#EB8F8F",
26             unmute     = "#A4CE8A"
27         },
28
29         _current_level = 0,
30         _mute          = "no",
31         device         = "N/A"
32     }
33
34     local args       = args or {}
35     local timeout    = args.timeout or 5
36     local settings   = args.settings or function() end
37     local width      = args.width or 63
38     local height     = args.height or 1
39     local margins    = args.margins or 1
40     local paddings   = args.paddings or 1
41     local ticks      = args.ticks or false
42     local ticks_size = args.ticks_size or 7
43     local tick       = args.tick or "|"
44     local tick_pre   = args.tick_pre or "["
45     local tick_post  = args.tick_post or "]"
46     local tick_none  = args.tick_none or " "
47
48     pulsebar.colors              = args.colors or pulsebar.colors
49     pulsebar.followtag           = args.followtag or false
50     pulsebar.notification_preset = args.notification_preset
51     pulsebar.devicetype          = args.devicetype or "sink"
52     pulsebar.cmd                 = args.cmd or "pacmd list-" .. pulsebar.devicetype .. "s | sed -n -e '/*/,$!d' -e '/index/p' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p' -e '/device\\.string/p'"
53
54     if not pulsebar.notification_preset then
55         pulsebar.notification_preset = {
56             font = "Monospace 10"
57         }
58     end
59
60     pulsebar.bar = wibox.widget {
61         color            = pulsebar.colors.unmute,
62         background_color = pulsebar.colors.background,
63         forced_height    = height,
64         forced_width     = width,
65         margins          = margins,
66         paddings         = paddings,
67         ticks            = ticks,
68         ticks_size       = ticks_size,
69         widget           = wibox.widget.progressbar,
70     }
71
72     pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
73
74     function pulsebar.update(callback)
75         helpers.async({ awful.util.shell, "-c", type(pulsebar.cmd) == "string" and pulsebar.cmd or pulsebar.cmd() },
76         function(s)
77             volume_now = {
78                 index  = string.match(s, "index: (%S+)") or "N/A",
79                 device = string.match(s, "device.string = \"(%S+)\"") or "N/A",
80                 muted  = string.match(s, "muted: (%S+)") or "N/A"
81             }
82
83             pulsebar.device = volume_now.index
84
85             local ch = 1
86             volume_now.channel = {}
87             for v in string.gmatch(s, ":.-(%d+)%%") do
88               volume_now.channel[ch] = v
89               ch = ch + 1
90             end
91
92             volume_now.left  = volume_now.channel[1] or "N/A"
93             volume_now.right = volume_now.channel[2] or "N/A"
94
95             local volu = volume_now.left
96             local mute = volume_now.muted
97
98             if volu:match("N/A") or mute:match("N/A") then return end
99
100             if volu ~= pulsebar._current_level or mute ~= pulsebar._mute then
101                 pulsebar._current_level = tonumber(volu)
102                 pulsebar.bar:set_value(pulsebar._current_level / 100)
103                 if pulsebar._current_level == 0 or mute == "yes" then
104                     pulsebar._mute = mute
105                     pulsebar.tooltip:set_text ("[muted]")
106                     pulsebar.bar.color = pulsebar.colors.mute
107                 else
108                     pulsebar._mute = "no"
109                     pulsebar.tooltip:set_text(string.format("%s %s: %s", pulsebar.devicetype, pulsebar.device, volu))
110                     pulsebar.bar.color = pulsebar.colors.unmute
111                 end
112
113                 settings()
114
115                 if type(callback) == "function" then callback() end
116             end
117         end)
118     end
119
120     function pulsebar.notify()
121         pulsebar.update(function()
122             local preset = pulsebar.notification_preset
123
124             preset.title = string.format("%s %s - %s%%", pulsebar.devicetype, pulsebar.device, pulsebar._current_level)
125
126             if pulsebar._mute == "yes" then
127                 preset.title = preset.title .. " muted"
128             end
129
130             -- tot is the maximum number of ticks to display in the notification
131             -- fallback: default horizontal wibox height
132             local wib, tot = awful.screen.focused().mywibox, 20
133
134             -- if we can grab mywibox, tot is defined as its height if
135             -- horizontal, or width otherwise
136             if wib then
137                 if wib.position == "left" or wib.position == "right" then
138                     tot = wib.width
139                 else
140                     tot = wib.height
141                 end
142             end
143
144             int = math.modf((pulsebar._current_level / 100) * tot)
145             preset.text = string.format(
146                 "%s%s%s%s",
147                 tick_pre,
148                 string.rep(tick, int),
149                 string.rep(tick_none, tot - int),
150                 tick_post
151             )
152
153             if pulsebar.followtag then preset.screen = awful.screen.focused() end
154
155             if not pulsebar.notification then
156                 pulsebar.notification = naughty.notify {
157                     preset  = preset,
158                     destroy = function() pulsebar.notification = nil end
159                 }
160             else
161                 naughty.replace_text(pulsebar.notification, preset.title, preset.text)
162             end
163         end)
164     end
165
166     helpers.newtimer(string.format("pulsebar-%s-%s", pulsebar.devicetype, pulsebar.device), timeout, pulsebar.update)
167
168     return pulsebar
169 end
170
171 return factory