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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
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 local wibox        = require("wibox")
17
18 local math         = { modf   = math.modf }
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    = string.format("%s -e alsamixer", terminal),
40
41     notifications = {
42         font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
43         font_size = "11",
44         color     = beautiful.fg_normal,
45         screen    = 1
46     },
47
48     _current_level = 0,
49     _muted         = false
50 }
51
52 function alsabar.notify()
53     alsabar.update()
54
55     local preset = {
56         title   = "",
57         text    = "",
58         timeout = 5,
59         screen  = alsabar.notifications.screen,
60         font    = string.format("%s %s", alsabar.notifications.font,
61                   alsabar.notifications.font_size),
62         fg      = alsabar.notifications.color
63     }
64
65     if alsabar._muted
66     then
67         preset.title = string.format("%s - Muted", alsabar.channel)
68     else
69         preset.title = string.format("%s - %s%%", alsabar.channel, alsabar._current_level)
70     end
71
72     int = math.modf((alsabar._current_level / 100) * awful.screen.focused().mywibox.height)
73     preset.text = string.format("[%s%s]", string.rep("|", int),
74                   string.rep(" ", awful.screen.focused().mywibox.height - int))
75
76     if alsabar.followtag then
77         preset.screen = awful.screen.focused()
78     end
79
80     if alsabar._notify ~= nil then
81         alsabar._notify = naughty.notify ({
82             replaces_id = alsabar._notify.id,
83             preset      = preset,
84         })
85     else
86         alsabar._notify = naughty.notify ({
87             preset = preset,
88         })
89     end
90 end
91
92 local function worker(args)
93     local args         = args or {}
94     local timeout      = args.timeout or 5
95     local settings     = args.settings or function() end
96     local width        = args.width or 63
97     local height       = args.heigth or 1
98     local ticks        = args.ticks or false
99     local ticks_size   = args.ticks_size or 7
100     local vertical     = args.vertical or false
101
102     alsabar.cmd           = args.cmd or "amixer"
103     alsabar.channel       = args.channel or alsabar.channel
104     alsabar.togglechannel = args.togglechannel
105     alsabar.step          = args.step or alsabar.step
106     alsabar.colors        = args.colors or alsabar.colors
107     alsabar.notifications = args.notifications or alsabar.notifications
108     alsabar.followtag     = args.followtag or false
109
110     alsabar.bar = wibox.widget {
111         forced_height    = height,
112         forced_width     = width,
113         color            = alsabar.colors.unmute,
114         background_color = alsabar.colors.background,
115         margins          = 1,
116         paddings         = 1,
117         ticks            = ticks,
118         ticks_size       = ticks_size,
119         widget           = wibox.widget.progressbar,
120         layout           = vertical and wibox.container.rotate
121     }
122
123     alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
124
125     function alsabar.update()
126         -- Get mixer control contents
127         local mixer = read_pipe(string.format("%s get %s", alsabar.cmd, alsabar.channel))
128
129         -- Capture mixer control state:          [5%] ... ... [on]
130         local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
131
132         -- HDMIs can have a channel different from Master for toggling mute
133         if alsabar.togglechannel then
134             mute = string.match(read_pipe(string.format("%s get %s", alsabar.cmd, alsabar.togglechannel)), "%[(%a+)%]")
135         end
136
137         if (volu and tonumber(volu) ~= alsabar._current_level) or (mute and string.match(mute, "on") ~= alsabar._muted)
138         then
139             alsabar._current_level = tonumber(volu) or alsabar._current_level
140             alsabar.bar:set_value(alsabar._current_level / 100)
141             if (not mute and tonumber(volu) == 0) or mute == "off"
142             then
143                 alsabar._muted = true
144                 alsabar.tooltip:set_text ("[Muted]")
145                 alsabar.bar.color = alsabar.colors.mute
146             else
147                 alsabar._muted = false
148                 alsabar.tooltip:set_text(string.format("%s: %s", alsabar.channel, volu))
149                 alsabar.bar.color = alsabar.colors.unmute
150             end
151
152             volume_now = {}
153             volume_now.level = tonumber(volu)
154             volume_now.status = mute
155
156             settings()
157         end
158     end
159
160     alsabar.bar:buttons(awful.util.table.join (
161           awful.button({}, 1, function()
162             awful.util.spawn(alsabar.mixer)
163           end),
164           awful.button({}, 2, function()
165                                                 awful.util.spawn(string.format("%s set %s 100%%", alsabar.cmd, alsabar.channel))
166             pulsebar.update()
167           end),
168           awful.button({}, 3, function()
169             awful.util.spawn(string.format("%s set %s toggle", alsabar.cmd, alsabar.togglechannel or alsabar.channel))
170             alsabar.update()
171           end),
172           awful.button({}, 4, function()
173             awful.util.spawn(string.format("%s set %s %s+", alsabar.cmd, alsabar.channel, alsabar.step))
174             alsabar.update()
175           end),
176           awful.button({}, 5, function()
177             awful.util.spawn(string.format("%s set %s %s-", alsabar.cmd, alsabar.channel, alsabar.step))
178             alsabar.update()
179           end)
180     ))
181
182     timer_id = string.format("alsabar-%s-%s", alsabar.cmd, alsabar.channel)
183
184     newtimer(timer_id, timeout, alsabar.update)
185
186     return alsabar
187 end
188
189 return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })