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taskwarrior: asynchronous; #213 enhanced
[etc/awesome.git] / widgets / 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 newtimer     = require("lain.helpers").newtimer
11 local read_pipe    = require("lain.helpers").read_pipe
12 local awful        = require("awful")
13 local beautiful    = require("beautiful")
14 local naughty      = require("naughty")
15 local wibox        = require("wibox")
16 local math         = { modf   = math.modf }
17 local mouse        = mouse
18 local string       = { format = string.format,
19                        match  = string.match,
20                        rep    = string.rep }
21 local tonumber     = tonumber
22 local setmetatable = setmetatable
23
24 -- Pulseaudio volume bar
25 -- lain.widgets.pulsebar
26 local pulsebar = {
27     sink = 0,
28     step = "1%",
29
30     colors = {
31         background = beautiful.bg_normal,
32         mute       = "#EB8F8F",
33         unmute     = "#A4CE8A"
34     },
35
36     mixer = "pavucontrol",
37
38     notifications = {
39         font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
40         font_size = "11",
41         color     = beautiful.fg_normal
42     },
43
44     _current_level = 0,
45     _muted         = false
46 }
47
48 function pulsebar.notify()
49     pulsebar.update()
50
51     local preset = {
52         title   = "",
53         text    = "",
54         timeout = 5,
55         font    = string.format("%s %s", pulsebar.notifications.font,
56                   pulsebar.notifications.font_size),
57         fg      = pulsebar.notifications.color
58     }
59
60     if pulsebar._muted
61     then
62         preset.title = string.format("Sink %s - Muted", pulsebar.sink)
63     else
64         preset.title = string.format("%s - %s%%", pulsebar.sink, pulsebar._current_level)
65     end
66
67     int = math.modf((pulsebar._current_level / 100) * awful.screen.focused().mywibox.height)
68     preset.text = string.format("[%s%s]", string.rep("|", int),
69                   string.rep(" ", awful.screen.focused().mywibox.height - int))
70
71     if pulsebar.followtag then
72         preset.screen = awful.screen.focused()
73     end
74
75     if pulsebar._notify ~= nil then
76         pulsebar._notify = naughty.notify ({
77             replaces_id = pulsebar._notify.id,
78             preset      = preset,
79         })
80     else
81         pulsebar._notify = naughty.notify ({
82             preset = preset,
83         })
84     end
85 end
86
87 local function worker(args)
88     local args       = args or {}
89     local timeout    = args.timeout or 5
90     local settings   = args.settings or function() end
91     local width      = args.width or 63
92     local height     = args.heigth or 1
93     local ticks      = args.ticks or false
94     local ticks_size = args.ticks_size or 7
95     local vertical   = args.vertical or false
96     local scallback  = args.scallback
97
98     pulsebar.cmd           = args.cmd or string.format("pacmd list-sinks | sed -n -e '0,/*/d' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p'")
99     pulsebar.colors        = args.colors or pulsebar.colors
100     pulsebar.notifications = args.notifications or pulsebar.notifications
101     pulsebar.sink          = args.sink or 0
102     pulsebar.step          = args.step or pulsebar.step
103     pulsebar.followtag   = args.followtag or false
104
105     pulsebar.bar = wibox.widget {
106         forced_height    = height,
107         forced_width     = width,
108         color            = pulsebar.colors.unmute,
109         background_color = pulsebar.colors.background,
110         margins          = 1,
111         paddings         = 1,
112         ticks            = ticks,
113         ticks_size       = ticks_size,
114         widget           = wibox.widget.progressbar,
115         layout           = vertical and wibox.container.rotate
116     }
117
118     pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
119
120     function pulsebar.update()
121         if scallback then pulseaudio.cmd = scallback() end
122         local s = read_pipe(pulsebar.cmd)
123
124         volume_now = {}
125         volume_now.left  = tonumber(string.match(s, ":.-(%d+)%%"))
126         volume_now.right = tonumber(string.match(s, ":.-(%d+)%%"))
127         volume_now.muted = string.match(s, "muted: (%S+)")
128
129         local volu = volume_now.left
130         local mute = volume_now.muted
131
132         if (volu and volu ~= pulsebar._current_level) or (mute and mute ~= pulsebar._muted)
133         then
134             pulsebar._current_level = volu
135             pulsebar.bar:set_value(pulsebar._current_level / 100)
136             if (not mute and volu == 0) or mute == "yes"
137             then
138                 pulsebar._muted = true
139                 pulsebar.tooltip:set_text ("[Muted]")
140                 pulsebar.bar.color = pulsebar.colors.mute
141             else
142                 pulsebar._muted = false
143                 pulsebar.tooltip:set_text(string.format("%s: %s", pulsebar.sink, volu))
144                 pulsebar.bar.color = pulsebar.colors.unmute
145             end
146             settings()
147         end
148     end
149
150     pulsebar.bar:buttons(awful.util.table.join (
151           awful.button({}, 1, function()
152             awful.util.spawn(pulsebar.mixer)
153           end),
154           awful.button({}, 2, function()
155                                                 awful.util.spawn(string.format("pactl set-sink-volume %d 100%%", pulsebar.sink))
156             pulsebar.update()
157           end),
158           awful.button({}, 3, function()
159                                                 awful.util.spawn(string.format("pactl set-sink-mute %d toggle", pulsebar.sink))
160             pulsebar.update()
161           end),
162           awful.button({}, 4, function()
163                                                 awful.util.spawn(string.format("pactl set-sink-volume %d +%s", pulsebar.sink, pulsebar.step))
164             pulsebar.update()
165           end),
166           awful.button({}, 5, function()
167                                                 awful.util.spawn(string.format("pactl set-sink-volume %d -%s", pulsebar.sink, pulsebar.step))
168             pulsebar.update()
169                                         end)
170     ))
171
172     timer_id = string.format("pulsebar-%s", pulsebar.sink)
173
174     newtimer(timer_id, timeout, pulsebar.update)
175
176     return pulsebar
177 end
178
179 return setmetatable(pulsebar, { __call = function(_, ...) return worker(...) end })