awesome/widgets/mpd_widget.lua

   1 local awful   = require("awful")
   2 local gears   = require("gears")
   3 local mpc     = require("widgets/mpc")
   4 local naughty = require("naughty")
   5 local textbox = require("wibox.widget.textbox")
   6 local timer   = require("gears.timer")
   7 local wibox   = require("wibox")
   8
   9 local widget = {}
  10 widget._textbox = textbox()
  11 widget._currentsong = {}
  12
  13 widget.scroll = wibox.widget {
  14     layout = wibox.container.scroll.horizontal,
  15     max_size = 200,
  16     extra_space = 10,
  17     step_function = wibox.container.scroll.step_functions.linear_increase,
  18     speed = 20,
  19     {
  20         widget = widget._textbox,
  21     }
  22 }
  23
  24 function widget:update_widget()
  25     local text = ""
  26     local artist = self._currentsong.artist
  27     local title = self._currentsong.title
  28     local file = self._currentsong.file
  29     if not artist then
  30         text = string.format("%s", title or file )
  31     else
  32         text = string.format("%s - %s", artist, title)
  33     end
  34     self._textbox.text = text
  35 end
  36
  37 local function sec_to_min(sec)
  38     m, s = math.modf((sec or 0.0) / 60)
  39     return string.format('%d:%02d', m, math.floor(s * 60))
  40 end
  41
  42 local function song_duration(elapsed, duration)
  43     return sec_to_min(elapsed) .. "/" .. sec_to_min(duration)
  44 end
  45
  46 local dbg = require("gears.debug")
  47 function widget:get_albumart()
  48     local art = self._albumart
  49     -- dbg.dump(art)
  50     -- dbg.dump(self._albumart.binary)
  51     if art and art.binary then
  52         local path = '/tmp/test.jpg'
  53         local f = io.open(path, 'w')
  54         f:write(art.binary)
  55         f:close()
  56         return path
  57     else
  58         return beautiful.mpd_default_album
  59     end
  60 end
  61
  62 function widget:get_info()
  63     local status, song = self._status, self._currentsong
  64     if not status.state then return nil end
  65
  66     local info = {}
  67     info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  68     if not song.artist then
  69         info.text = string.format("%s", song.title or song.file)
  70     else
  71         info.text = string.format("%s - %s", song.artist, song.title)
  72     end
  73     if song.album then
  74         info.text = info.text .. "\n" .. tostring(song.album or "")
  75     end
  76
  77     return info
  78 end
  79
  80 function widget:popup_show()
  81     if self._notification then return end
  82
  83     local table = self:get_info()
  84     if not table then return end
  85
  86     self._timer:start()
  87     self._notification = naughty.notify(
  88         { title = table.title
  89         , icon = self:get_albumart()
  90         , icon_size = 64
  91         , text = table.text
  92         , timeout = 0
  93         , destroy = function() self._timer:stop(); self._notification = nil end
  94         })
  95 end
  96
  97 function widget:popup_hide(delay)
  98     local function destroy()
  99         if self._hover then return end
 100         if not self._notification then return end
 101         naughty.destroy(self._notification)
 102         self._notification = nil
 103     end
 104
 105     if not delay then
 106         destroy()
 107         return
 108     end
 109
 110     if self._hide_timer and self._hide_timer.started then
 111         self._hide_timer.timeout = delay
 112         self._hide_timer:again()
 113     else
 114         self._hide_timer = timer(
 115             { timeout = delay
 116             , autostart = true
 117             , single_shot = true
 118             , callback = destroy
 119             })
 120     end
 121 end
 122
 123 function widget:popup_update()
 124     if not self._notification then return end
 125     self._connection:send("status", function(_, status)
 126         self._status = status
 127         local table = self:get_info()
 128         if not self._notification then return end
 129         naughty.replace_text(self._notification, table.title, table.text)
 130     end)
 131 end
 132
 133 function widget:popup_oneshot(timeout)
 134     if self._notification then
 135         self:popup_hide()
 136         self:popup_show()
 137     else
 138         self:popup_show()
 139     end
 140     self:popup_hide(5)
 141 end
 142
 143 function widget:error_handler(err)
 144     self._textbox:set_text("Error: " .. tostring(err))
 145     self._status = {}
 146 end
 147
 148 function widget:run()
 149     self._status = {}
 150
 151     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 152         "player", function(conn)
 153             conn:send("status", function(err, status)
 154                 local songchanged = self._status.songid ~= status.songid
 155                 local statechanged = self._status.state ~= status.state
 156                 self._status = status
 157                 if not songchanged then
 158                     self:update_widget()
 159                     if statechanged then
 160                         self:popup_oneshot(5)
 161                     end
 162                     return
 163                 end
 164
 165                 conn:send("currentsong", function(_, song)
 166                     self._currentsong = song
 167                     conn:albumart(song.file, function(_, art)
 168                         self._albumart = art
 169                         self:update_widget()
 170                         self:popup_oneshot(5)
 171                     end)
 172                 end)
 173             end)
 174         end
 175     )
 176
 177     self._keep_alive_timer = timer {
 178       timeout = 1
 179     , autostart = true
 180     , callback = function() self._connection:connect() end
 181     , call_now = true
 182     }
 183
 184     self._timer = timer({ timeout = 1 })
 185     self._timer:connect_signal("timeout", function() self:popup_update() end)
 186
 187     self._hover = false;
 188     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 189     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 190 end
 191
 192 widget:run()
 193
 194 widget.scroll:buttons(gears.table.join(
 195   awful.button({}, 1, function() widget._connection:toggle_play() end)
 196 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 197 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 198 )
 199
 200 globalkeys = gears.table.join(globalkeys,
 201     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 202               { description = "toogle play", group = "mpd" }),
 203     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 204               { description = "show more info", group = "mpd" }),
 205     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 206               { description = "previous track", group = "mpd" }),
 207     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 208               { description = "next track", group = "mpd" })
 209 )
 210 return {
 211     layout = wibox.layout.align.horizontal,
 212     forced_width = 200,
 213     expand = "outside",
 214     nil,
 215     widget.scroll,
 216     nil,
 217 }