lain/widget/pulsebar.lua

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--[[
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Licensed under GNU General Public License v2
* (c) 2013, Luke Bonham
* (c) 2013, Rman
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--]]
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local helpers = require("lain.helpers")
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local awful = require("awful")
local naughty = require("naughty")
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local wibox = require("wibox")
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local math = { modf = math.modf }
local string = { format = string.format,
gmatch = string.gmatch,
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match = string.match,
rep = string.rep }
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local type = type
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local tonumber = tonumber
local setmetatable = setmetatable
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-- Pulseaudio volume bar
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-- lain.widget.pulsebar
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local pulsebar = {
colors = {
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background = "#000000",
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mute = "#EB8F8F",
unmute = "#A4CE8A"
},
_current_level = 0,
_muted = false
}
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local function factory(args)
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local args = args or {}
local timeout = args.timeout or 5
local settings = args.settings or function() end
local width = args.width or 63
local height = args.heigth or 1
local ticks = args.ticks or false
local ticks_size = args.ticks_size or 7
local vertical = args.vertical or false
local scallback = args.scallback
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pulsebar.cmd = args.cmd or "pacmd list-sinks | sed -n -e '0,/*/d' -e '/base volume/d' -e '/volume:/p' -e '/muted:/p' -e '/device\\.string/p'"
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pulsebar.sink = args.sink or 0
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pulsebar.colors = args.colors or pulsebar.colors
pulsebar.followtag = args.followtag or false
pulsebar.notifications = args.notification_preset
if not pulsebar.notification_preset then
pulsebar.notification_preset = {}
pulsebar.notification_preset.font = "Monospace 10"
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end
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pulsebar.bar = wibox.widget {
forced_height = height,
forced_width = width,
color = pulsebar.colors.unmute,
background_color = pulsebar.colors.background,
margins = 1,
paddings = 1,
ticks = ticks,
ticks_size = ticks_size,
widget = wibox.widget.progressbar,
layout = vertical and wibox.container.rotate
}
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pulsebar.tooltip = awful.tooltip({ objects = { pulsebar.bar } })
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function pulsebar.update(callback)
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if scallback then pulseaudio.cmd = scallback() end
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helpers.async({ awful.util.shell, "-c", pulsebar.cmd }, function(s)
volume_now = {
index = string.match(s, "index: (%S+)") or "N/A",
sink = string.match(s, "device.string = \"(%S+)\"") or "N/A",
muted = string.match(s, "muted: (%S+)") or "N/A"
}
local ch = 1
volume_now.channel = {}
for v in string.gmatch(s, ":.-(%d+)%%") do
volume_now.channel[ch] = v
ch = ch + 1
end
volume_now.left = volume_now.channel[1] or "N/A"
volume_now.right = volume_now.channel[2] or "N/A"
local volu = volume_now.left
local mute = volume_now.muted
if (volu and volu ~= pulsebar._current_level) or (mute and mute ~= pulsebar._muted) then
pulsebar._current_level = volu
pulsebar.bar:set_value(pulsebar._current_level / 100)
if (not mute and volu == 0) or mute == "yes" then
pulsebar._muted = true
pulsebar.tooltip:set_text ("[Muted]")
pulsebar.bar.color = pulsebar.colors.mute
else
pulsebar._muted = false
pulsebar.tooltip:set_text(string.format("%s: %s", pulsebar.sink, volu))
pulsebar.bar.color = pulsebar.colors.unmute
end
settings()
if type(callback) == "function" then callback() end
end
end)
end
function pulsebar.notify()
pulsebar.update(function()
local preset = pulsebar.notification_preset
if pulsebar._muted then
preset.title = string.format("Sink %s - Muted", pulsebar.sink)
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else
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preset.title = string.format("%s - %s%%", pulsebar.sink, pulsebar._current_level)
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end
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int = math.modf((pulsebar._current_level / 100) * awful.screen.focused().mywibox.height)
preset.text = string.format("[%s%s]", string.rep("|", int),
string.rep(" ", awful.screen.focused().mywibox.height - int))
if pulsebar.followtag then preset.screen = awful.screen.focused() end
if not pulsebar.notification then
pulsebar.notification = naughty.notify {
preset = preset,
destroy = function() pulsebar.notification = nil end
}
else
naughty.replace_text(pulsebar.notification, preset.title, preset.text)
end
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end)
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end
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helpers.newtimer(string.format("pulsebar-%s", pulsebar.sink), timeout, pulsebar.update)
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return pulsebar
end
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return setmetatable(pulsebar, { __call = function(_, ...) return factory(...) end })