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---------------------------------------------------
-- Licensed under the GNU General Public License v2
-- * (c) 2010, Adrian C. <anrxc@sysphere.org>
---------------------------------------------------
-- {{{ Grab environment
local tonumber = tonumber
local io = { popen = io.popen }
local setmetatable = setmetatable
local string = { match = string.match }
-- }}}
-- Volume: provides volume levels and state of requested ALSA mixers
module("vicious.widgets.volume")
-- {{{ Volume widget type
local function worker(format, warg)
if not warg then return end
local mixer_state = {
["on"] = "♫", -- "",
["off"] = "♩" -- "M"
}
-- Get mixer control contents
local f = io.popen("amixer get " .. warg)
local mixer = f:read("*all")
f:close()
-- Capture mixer control state: [5%] ... ... [on]
local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
-- Handle mixers without data
if volu == nil then
return {0, mixer_state["off"]}
end
-- Handle mixers without mute
if mute == "" and volu == "0"
-- Handle mixers that are muted
or mute == "off" then
mute = mixer_state["off"]
else
mute = mixer_state["on"]
end
return {tonumber(volu), mute}
end
-- }}}
setmetatable(_M, { __call = function(_, ...) return worker(...) end })
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