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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 local newtimer     = require("lain.helpers").newtimer
10
11 local awful        = require("awful")
12 local beautiful    = require("beautiful")
13 local naughty      = require("naughty")
14
15 local io           = io
16 local math         = { modf  = math.modf }
17 local string       = { match = string.match,
18                        rep   = string.rep }
19 local tonumber     = tonumber
20
21 local setmetatable = setmetatable
22
23 -- ALSA volume bar
24 -- lain.widgets.alsabar
25 local alsabar =
26 {
27   channel = "Master",
28   step = "5%",
29
30   colors =
31   {
32      background = beautiful.bg_normal,
33      mute   = "#EB8F8F",
34      unmute = "#A4CE8A"
35   },
36
37   terminal = terminal or "xterm",
38   mixer = terminal .. " -e alsamixer",
39
40   notifications =
41   {
42      font = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
43      font_size = "11",
44      color = beautiful.fg_focus,
45      bar_size = 18 -- Awesome default
46   },
47
48   _current_level = 0,
49   _muted = false
50 }
51
52 function alsabar:notify()
53         local preset =
54         {
55       title = "", text = "",
56       timeout = 15,
57       font = alsabar.notifications.font .. " " .. alsabar.notifications.font_size,
58       fg = alsabar.notifications.color
59         }
60
61         if alsabar._muted then
62                 preset.title = alsabar.channel .. " - Muted"
63         else
64                 preset.title = alsabar.channel .. " - " .. alsabar._current_level * 100 .. "%"
65         end
66
67   local int = math.modf(alsabar._current_level * alsabar.notifications.bar_size)
68   preset.text = "[" .. string.rep("|", int)
69                 .. string.rep(" ", alsabar.notifications.bar_size - int) .. "]"
70
71   if alsabar._notify ~= nil then
72                 alsabar._notify = naughty.notify ({ replaces_id = alsabar._notify.id,
73                                                        preset = preset })
74         else
75                 alsabar._notify = naughty.notify ({ preset = preset })
76         end
77 end
78
79 local function worker(args)
80     local args = args or {}
81     local width = args.width or 63
82     local height = args.heigth or 1
83     local ticks = args.ticks or true
84     local ticks_size = args.ticks_size or 7
85     local vertical = args.vertical or false
86     alsabar.channel = args.channel or alsabar.channel
87     alsabar.step = args.step or alsabar.step
88     alsabar.colors = args.colors or alsabar.colors
89     alsabar.notifications = args.notifications or alsabar.notifications
90
91     alsabar.bar = awful.widget.progressbar()
92
93     alsabar.bar:set_background_color(alsabar.colors.background)
94     alsabar.bar:set_color(alsabar.colors.unmute)
95     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
96     alsabar.bar:set_width(width)
97     alsabar.bar:set_height(height)
98     alsabar.bar:set_ticks(ticks)
99     alsabar.bar:set_ticks_size(ticks_size)
100
101     if vertical then
102         alsabar.bar:set_vertical(true)
103     end
104
105     function update()
106         -- Get mixer control contents
107         local f = io.popen("amixer get " .. alsabar.channel)
108         local mixer = f:read("*all")
109         f:close()
110
111         -- Capture mixer control state:          [5%] ... ... [on]
112         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)") 
113
114         if volu == nil then
115             volu = 0
116             mute = "off"
117         end
118
119         alsabar._current_level = tonumber(volu) / 100
120         alsabar.bar:set_value(alsabar._current_level)
121
122         if mute == "" and volu == "0" or mute == "off"
123         then
124             alsabar._muted = true
125             alsabar.tooltip:set_text (" [Muted] ")
126             alsabar.bar:set_color(alsabar.colors.mute)
127         else
128             alsabar._muted = false
129             alsabar.tooltip:set_text(" " .. alsabar.channel .. ": " .. volu .. "% ")
130             alsabar.bar:set_color(alsabar.colors.unmute)
131         end
132     end
133
134     newtimer("alsabar", 5, update)
135
136     alsabar.bar:buttons (awful.util.table.join (
137           awful.button ({}, 1, function()
138             awful.util.spawn(alsabar.mixer)
139           end),
140           awful.button ({}, 3, function()
141             awful.util.spawn("amixer sset " .. alsabar.channel .. " toggle")
142             myvolumebarupdate()
143           end),
144           awful.button ({}, 4, function()
145             awful.util.spawn("amixer sset " .. alsabar.channel .. " "
146                               .. alsabar.step .. "+")
147             myvolumebarupdate()
148           end),
149           awful.button ({}, 5, function()
150             awful.util.spawn("amixer sset " .. alsabar.channel .. " "
151                               .. alsabar.step .. "-")
152             myvolumebarupdate()
153           end)
154     ))
155
156     return { 
157         widget  = alsabar.bar,
158         channel = alsabar.channel, 
159         step    = alsabar.step,
160         notify  = function() 
161                     update()
162                     alsabar.notify()
163                   end
164     }
165 end
166
167 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })