awesome/widgets/mpd_widget.lua

   1 local mpc = require("widgets/mpc")
   2 local textbox = require("wibox.widget.textbox")
   3 local gears = require("gears")
   4 local awful = require("awful")
   5 local naughty = require("naughty")
   6 local timer = require("gears.timer")
   7
   8 --TODO remove
   9 local dbg = require("gears.debug")
  10
  11 mpd_widget = textbox()
  12
  13 local function update_widget()
  14     local text = ""
  15     if state == "pause" then
  16         text = "|| "
  17     end
  18     text = text .. tostring(artist or "") .. " - " .. tostring(title or "")
  19     mpd_widget.text = text
  20 end
  21
  22 local connection
  23 local function error_handler(err)
  24     mpd_widget:set_text("Error: " .. tostring(err))
  25     timer.start_new(10, function()
  26         connection:send("ping")
  27     end)
  28 end
  29
  30 connection = mpc.new(nil, nil, nil, error_handler,
  31     "status", function(_, result)
  32         state = result.state
  33     end,
  34     "currentsong", function(_, result)
  35         title, artist, file = result.title, result.artist, result.file
  36         pcall(update_widget)
  37     end
  38 )
  39
  40 mpd_widget:buttons(gears.table.join(
  41   awful.button({}, 1, function() connection:toggle_play() end)
  42 , awful.button({}, 4, function() connection:change_volume(5) end)
  43 , awful.button({}, 5, function() connection:change_volume(-5) end))
  44 )
  45
  46 local function sec_to_min(sec)
  47     m, s = math.modf((sec or 0.0) / 60)
  48     return string.format('%d:%02d', m, math.floor(s * 60))
  49 end
  50
  51 local function song_duration(elapsed, duration)
  52     return sec_to_min(elapsed) .. "/" .. sec_to_min(duration)
  53 end
  54
  55 local function get_info(callback)
  56     local status = nil
  57     connection:send("status", function(_, s) status = s end)
  58
  59     local song = nil
  60     connection:send("currentsong", function(_, s) song = s end)
  61
  62     timer.start_new(0.10, function()
  63         if status == nil or song == nil then return true end
  64
  65         dbg.dump(status)
  66         dbg.dump(song)
  67
  68         local info = {}
  69         info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  70         info.text = tostring(song.artist or "") .. " - " .. tostring(song.title or "") .. "\n"
  71             .. tostring(song.album or "")
  72         callback(info)
  73         return false
  74     end)
  75 end
  76
  77 local popup = {}
  78 function popup:show()
  79     get_info(function(table)
  80         if self._notification ~= nil then return end
  81         self._notification = naughty.notify(
  82             { title = table.title
  83             -- , icon = img
  84             , text = table.text
  85             , timeout = 0
  86             })
  87     end)
  88 end
  89
  90 function popup:hide()
  91     if self._notification ~= nil then
  92         naughty.destroy(self._notification)
  93         self._notification = nil
  94     end
  95 end
  96
  97 function popup:update()
  98     get_info(function(table)
  99         if self._notification == nil then return end
 100         naughty.replace_text(self._notification, table.title, table.text)
 101     end)
 102 end
 103
 104 function popup:run()
 105     self._timer = timer({ timeout = 1 })
 106     self._timer:connect_signal("start",   function() self:show() end)
 107     self._timer:connect_signal("timeout", function() self:update() end)
 108     self._timer:connect_signal("stop",    function() self:hide() end)  --TODO delay
 109
 110     mpd_widget:connect_signal("mouse::enter", function() self._timer:again() end)
 111     mpd_widget:connect_signal("mouse::leave", function() self._timer:stop() end)
 112 end
 113
 114 popup:run()
 115
 116 globalkeys = gears.table.join(globalkeys,
 117     awful.key({ modkey }, "p", function() connection:toggle_play() end,
 118               { description = "toogle play", group = "mpd" }),
 119     awful.key({ modkey }, ",", function() connection:send("previous") end,
 120               { description = "previous track", group = "mpd" }),
 121     awful.key({ modkey }, ".", function() connection:send("next") end,
 122               { description = "next track", group = "mpd" })
 123 )
 124 return mpd_widget