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b7c66b7798365daf1e89ca63dab0f922467da3a1
[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
10 local newtimer     = require("lain.helpers").newtimer
11 local read_pipe    = require("lain.helpers").read_pipe
12
13 local awful        = require("awful")
14 local beautiful    = require("beautiful")
15 local naughty      = require("naughty")
16
17 local math         = { modf   = math.modf }
18 local mouse        = mouse
19 local string       = { format = string.format,
20                        match  = string.match,
21                        rep    = string.rep }
22 local tonumber     = tonumber
23
24 local setmetatable = setmetatable
25
26 -- ALSA volume bar
27 -- lain.widgets.alsabar
28 local alsabar = {
29     channel = "Master",
30     step    = "1%",
31
32     colors = {
33         background = beautiful.bg_normal,
34         mute       = "#EB8F8F",
35         unmute     = "#A4CE8A"
36     },
37
38     terminal = terminal or "xterm",
39     mixer    = terminal .. " -e alsamixer",
40
41     notifications = {
42         font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
43         font_size = "11",
44         color     = beautiful.fg_normal,
45         bar_size  = 18,
46         screen    = 1
47     },
48
49     _current_level = 0,
50     _muted         = false
51 }
52
53 function alsabar.notify()
54     alsabar.update()
55
56     local preset = {
57         title   = "",
58         text    = "",
59         timeout = 5,
60         screen  = alsabar.notifications.screen,
61         font    = alsabar.notifications.font .. " " ..
62                   alsabar.notifications.font_size,
63         fg      = alsabar.notifications.color
64     }
65
66     if alsabar._muted
67     then
68         preset.title = alsabar.channel .. " - Muted"
69     else
70         preset.title = alsabar.channel .. " - " .. alsabar._current_level .. "%"
71     end
72
73     int = math.modf((alsabar._current_level / 100) * alsabar.notifications.bar_size)
74     preset.text = "["
75                 .. string.rep("|", int)
76                 .. string.rep(" ", alsabar.notifications.bar_size - int)
77                 .. "]"
78
79     if alsabar.followmouse then
80         preset.screen = mouse.screen
81     end
82
83     if alsabar._notify ~= nil then
84         alsabar._notify = naughty.notify ({
85             replaces_id = alsabar._notify.id,
86             preset      = preset,
87         })
88     else
89         alsabar._notify = naughty.notify ({
90             preset = preset,
91         })
92     end
93 end
94
95 local function worker(args)
96     local args       = args or {}
97     local timeout    = args.timeout or 5
98     local settings   = args.settings or function() end
99     local width      = args.width or 63
100     local height     = args.heigth or 1
101     local ticks      = args.ticks or false
102     local ticks_size = args.ticks_size or 7
103     local vertical   = args.vertical or false
104
105     alsabar.cmd           = args.cmd or "amixer"
106     alsabar.channel       = args.channel or alsabar.channel
107     alsabar.togglechannel = args.togglechannel
108     alsabar.step          = args.step or alsabar.step
109     alsabar.colors        = args.colors or alsabar.colors
110     alsabar.notifications = args.notifications or alsabar.notifications
111     alsabar.followmouse   = args.followmouse or false
112
113     alsabar.bar = awful.widget.progressbar()
114
115     alsabar.bar:set_background_color(alsabar.colors.background)
116     alsabar.bar:set_color(alsabar.colors.unmute)
117     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
118     alsabar.bar:set_width(width)
119     alsabar.bar:set_height(height)
120     alsabar.bar:set_ticks(ticks)
121     alsabar.bar:set_ticks_size(ticks_size)
122     alsabar.bar:set_vertical(vertical)
123
124     function alsabar.update()
125         -- Get mixer control contents
126         local mixer = read_pipe(string.format("%s get %s", alsabar.cmd, alsabar.channel))
127
128         -- Capture mixer control state:          [5%] ... ... [on]
129         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
130
131         -- HDMIs can have a channel different from Master for toggling mute
132         if alsabar.togglechannel then
133             mute = string.match(read_pipe(string.format("%s get %s", alsabar.cmd, alsabar.togglechannel)), "%[(%a+)%]")
134         end
135
136         if (volu and tonumber(volu) ~= alsabar._current_level) or (mute and string.match(mute, "on") ~= alsabar._muted)
137         then
138             alsabar._current_level = tonumber(volu)
139             alsabar.bar:set_value(alsabar._current_level / 100)
140             if not mute and tonumber(volu) == 0 or mute == "off"
141             then
142                 alsabar._muted = true
143                 alsabar.tooltip:set_text (" [Muted] ")
144                 alsabar.bar:set_color(alsabar.colors.mute)
145             else
146                 alsabar._muted = false
147                 alsabar.tooltip:set_text(string.format(" %s:%s ", alsabar.channel, volu))
148                 alsabar.bar:set_color(alsabar.colors.unmute)
149             end
150
151             volume_now = {}
152             volume_now.level = tonumber(volu)
153             volume_now.status = mute
154             settings()
155         end
156     end
157
158     alsabar.bar:buttons (awful.util.table.join (
159           awful.button ({}, 1, function()
160             awful.util.spawn(alsabar.mixer)
161           end),
162           awful.button ({}, 3, function()
163             awful.util.spawn(string.format("%s set %s toggle", alsabar.cmd, alsabar.channel))
164             alsabar.update()
165           end),
166           awful.button ({}, 4, function()
167             awful.util.spawn(string.format("%s set %s %s+", alsabar.cmd, alsabar.channel, alsabar.step))
168             alsabar.update()
169           end),
170           awful.button ({}, 5, function()
171             awful.util.spawn(string.format("%s set %s %s-", alsabar.cmd, alsabar.channel, alsabar.step))
172             alsabar.update()
173           end)
174     ))
175
176     timer_id = string.format("alsabar-%s-%s", alsabar.cmd, alsabar.channel)
177
178     newtimer(timer_id, timeout, alsabar.update)
179
180     return alsabar
181 end
182
183 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })