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--------------------------------
-- Author: Gregor Best --
-- Copyright 2009 Gregor Best --
--------------------------------
local setmetatable = setmetatable
local tonumber = tonumber
local pairs = pairs
local io = {
popen = io.popen
}
local string = {
match = string.match,
find = string.find,
format = string.format
}
local table = {
insert = table.insert
}
local awful = require("awful")
local wibox = require("wibox")
local lib = {
hooks = require("obvious.lib.hooks"),
markup = require("obvious.lib.markup")
}
local volume_alsa = {}
local objects = { }
function volume_alsa.get_data(cardid, channel)
local rv = { }
local fd = io.popen("amixer -c " .. cardid .. " -- sget " .. channel)
if not fd then return end
local status = fd:read("*all")
fd:close()
rv.volume = tonumber(string.match(status, "(%d?%d?%d)%%"))
if not rv.volume then
rv.volume = ""
end
status = string.match(status, "%[(o[^%]]*)%]")
if not status then status = "on" end
if string.find(status, "on", 1, true) then
rv.mute = false
else
rv.mute = true
end
return rv
end
local function update(obj)
local status = volume_alsa.get_data(obj.cardid, obj.channel) or { mute = true, volume = 0 }
local color = "#900000"
if not status.mute then
color = "#009000"
end
local format = " %03d%%"
if status.volume == "" then
format = ""
end
obj.widget:set_markup(lib.markup.fg.color(color, "" .. obj.abrv .. "" ) .. string.format(format, status.volume))
end
local function update_by_values(cardid, channel)
for i, v in pairs(objects) do
if v.channel == channel and v.cardid == cardid then
update(v)
end
end
end
function volume_alsa.raise(cardid, channel, v)
v = v or 1
awful.util.spawn("amixer -q -c " .. cardid .. " sset " .. channel .. " " .. v .. "+", false)
update_by_values(cardid, channel)
end
function volume_alsa.lower(cardid, channel, v)
v = v or 1
awful.util.spawn("amixer -q -c " .. cardid .. " sset " .. channel .. " " .. v .. "-", false)
update_by_values(cardid, channel)
end
function volume_alsa.mute(cardid, channel)
awful.util.spawn("amixer -c " .. cardid .. " sset " .. channel .. " toggle", false)
update_by_values(cardid, channel)
end
local function mixer(term, cardid)
awful.util.spawn(term .. " -e 'alsamixer -c " .. cardid .. "'")
end
local function create(_, cardid, channel, abrv)
local cardid = cardid or 0
local channel = channel or "Master"
local abrv = abrv or "M"
local obj = {
cardid = cardid,
channel = channel,
abrv = abrv,
term = "x-terminal-emulator -T Mixer"
}
local widget = wibox.widget.textbox()
obj.widget = widget
obj[1] = widget
obj.update = function() update(obj) end
widget:buttons(awful.util.table.join(
awful.button({ }, 4, function () volume_alsa.raise(obj.cardid, obj.channel, 1) obj.update() end),
awful.button({ }, 5, function () volume_alsa.lower(obj.cardid, obj.channel, 1) obj.update() end),
awful.button({ "Shift" }, 4, function () volume_alsa.raise(obj.cardid, obj.channel, 10) obj.update() end),
awful.button({ "Shift" }, 5, function () volume_alsa.lower(obj.cardid, obj.channel, 10) obj.update() end),
awful.button({ "Control" }, 4, function () volume_alsa.raise(obj.cardid, obj.channel, 5) obj.update() end),
awful.button({ "Control" }, 5, function () volume_alsa.lower(obj.cardid, obj.channel, 5) obj.update() end),
awful.button({ }, 1, function () volume_alsa.mute(obj.cardid, obj.channel) obj.update() end),
awful.button({ }, 3, function () mixer(obj.term, obj.cardid) obj.update() end)
))
obj.set_layout = function(obj, layout) obj.layout = layout return obj end
obj.set_cardid = function(obj, id) obj.cardid = id obj.update() return obj end
obj.set_channel = function(obj, id) obj.channel = id obj.update() return obj end
obj.set_abrv = function(obj, id) obj.abrv = id obj.update() return obj end
obj.set_term = function(obj, term) obj.term = term return obj end
obj.raise = function(obj, v) volume_alsa.raise(obj.cardid, obj.channel, v) return obj end
obj.lower = function(obj, v) volume_alsa.lower(obj.cardid, obj.channel, v) return obj end
obj.mute = function(obj, v) volume_alsa.mute(obj.cardid, obj.channel, v) return obj end
obj.update()
lib.hooks.timer.register(10, 30, obj.update, "Update for the volume widget")
lib.hooks.timer.start(obj.update)
table.insert(objects, obj)
return widget
end
return setmetatable(volume_alsa, { __call = create })
-- vim:ft=lua:ts=2:sw=2:sts=2:tw=80:et
|
