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 local widget = {}
  12 widget._textbox = textbox()
  13 widget._currentsong = {}
  14
  15 function widget:update_widget()
  16     local text = ""
  17     local artist = self._currentsong.artist
  18     local title = self._currentsong.title
  19     local file = self._currentsong.file
  20     text = text .. tostring(artist or "") .. " - " .. tostring(title or "")
  21     if not artist then
  22         text = string.format("%s", title or file )
  23     else
  24         text = string.format("%s - %s", artist, title)
  25     end
  26     self._textbox.text = text
  27 end
  28
  29 local function sec_to_min(sec)
  30     m, s = math.modf((sec or 0.0) / 60)
  31     return string.format('%d:%02d', m, math.floor(s * 60))
  32 end
  33
  34 local function song_duration(elapsed, duration)
  35     return sec_to_min(elapsed) .. "/" .. sec_to_min(duration)
  36 end
  37
  38 function widget:get_info(callback)
  39     local status = nil
  40     self._connection:send("status", function(_, s) status = s end)
  41
  42     local song = nil
  43     self._connection:send("currentsong", function(_, s) song = s end)
  44
  45     self._connection:send("ping", function()
  46
  47         local info = {}
  48         info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  49         info.text = tostring(song.artist or "") .. " - " .. tostring(song.title or "") .. "\n"
  50             .. tostring(song.album or "")
  51         callback(info)
  52         return false
  53     end)
  54 end
  55
  56 function widget:popup_show()
  57     self:get_info(function(table)
  58         if self._notification then return end
  59         self._notification = naughty.notify(
  60             { title = table.title
  61             -- , icon = img
  62             , text = table.text
  63             , timeout = 0
  64             , destroy = function() self._timer:stop() end
  65             })
  66         self._timer:start()
  67     end)
  68 end
  69
  70 function widget:popup_hide(delay)
  71     if self._hide_timer and self._hide_timer.started then
  72         self._hide_timer:again()
  73     else
  74         self._hide_timer = timer(
  75             { timeout = delay
  76             , autostart = true
  77             , single_shot = true
  78             , callback = function()
  79                 if self._hover then return end
  80                 if not self._notification then return end
  81                 naughty.destroy(self._notification)
  82                 self._notification = nil
  83                 end
  84             })
  85     end
  86 end
  87
  88 function widget:popup_update()
  89     self:get_info(function(table)
  90         if not self._notification then return end
  91         naughty.replace_text(self._notification, table.title, table.text)
  92     end)
  93 end
  94
  95 function widget:popup_oneshot(timeout)
  96     if self._notification then
  97         self:popup_update()
  98         self:popup_hide(5)
  99     else
 100         self:popup_show()
 101         self:popup_hide(5)
 102     end
 103 end
 104
 105 function widget:error_handler(err)
 106     self._textbox:set_text("Error: " .. tostring(err))
 107     timer.start_new(10, function()
 108         self._connection:send("ping")
 109     end)
 110 end
 111
 112 function widget:run()
 113     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 114         "status", function(_, result)
 115             if not self._status or result.state ~= self._status.state then
 116                 self._status = result
 117                 self:update_widget()
 118                 self:popup_oneshot(5)
 119             end
 120         end,
 121         "currentsong", function(_, result)
 122             if not self._currentsong or result.id ~= self._currentsong.id then
 123                 self._currentsong = result
 124                 self:update_widget()
 125                 self:popup_oneshot(5)
 126             end
 127         end
 128     )
 129
 130     self._timer = timer({ timeout = 1 })
 131     self._timer:connect_signal("timeout", function() self:popup_update() end)
 132
 133     self._hover = false;
 134     self._textbox:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 135     self._textbox:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 136 end
 137
 138 widget:run()
 139
 140 widget._textbox:buttons(gears.table.join(
 141   awful.button({}, 1, function() widget._connection:toggle_play() end)
 142 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 143 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 144 )
 145
 146 globalkeys = gears.table.join(globalkeys,
 147     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 148               { description = "toogle play", group = "mpd" }),
 149     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 150               { description = "show more info", group = "mpd" }),
 151     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 152               { description = "previous track", group = "mpd" }),
 153     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 154               { description = "next track", group = "mpd" })
 155 )
 156 return widget._textbox