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     if not self._currentsong then
  26         self._textbox.text = ""
  27         return
  28     end
  29     local text = ""
  30     local artist = self._currentsong.artist
  31     local title = self._currentsong.title
  32     local file = self._currentsong.file
  33     if artist and title then
  34         text = string.format("%s - %s", artist, title)
  35     elseif title or file then
  36         text = string.format("%s", title or file )
  37     else
  38         text = "-"
  39     end
  40     self._textbox.text = text
  41 end
  42
  43 local function sec_to_min(sec)
  44     local m, s = math.modf((sec or 0.0) / 60)
  45     return string.format('%d:%02d', m, math.floor(s * 60))
  46 end
  47
  48 local function song_duration(elapsed, duration)
  49     return sec_to_min(elapsed) .. "/" .. sec_to_min(duration)
  50 end
  51
  52 local dbg = require("gears.debug")
  53 function widget:get_albumart()
  54     local art = self._albumart
  55     -- dbg.dump(art)
  56     -- dbg.dump(self._albumart.binary)
  57     if art and art.binary then
  58         local path = '/tmp/test.jpg'
  59         local f = io.open(path, 'w')
  60         f:write(art.binary)
  61         f:close()
  62         return path
  63     else
  64         return beautiful.mpd_default_album
  65     end
  66 end
  67
  68 function widget:get_info()
  69     local status, song = self._status, self._currentsong
  70     if not status.state then return nil end
  71     if not status.song then return nil end
  72
  73     local info = {}
  74     info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  75     if not song.artist then
  76         info.text = string.format("%s", song.title or song.file)
  77     else
  78         info.text = string.format("%s - %s", song.artist, song.title)
  79     end
  80     if song.album then
  81         info.text = info.text .. "\n" .. tostring(song.album or "")
  82     end
  83
  84     return info
  85 end
  86
  87 function widget:popup_show()
  88     if self._notification then return end
  89
  90     local table = self:get_info()
  91     if not table then return end
  92
  93     self._timer:start()
  94     self._notification = naughty.notify(
  95         { title = table.title
  96         , icon = self:get_albumart()
  97         , icon_size = 64
  98         , text = table.text
  99         , timeout = 0
 100         , destroy = function() self._timer:stop(); self._notification = nil end
 101         })
 102 end
 103
 104 function widget:popup_hide(delay)
 105     local function destroy()
 106         if self._hover then return end
 107         if not self._notification then return end
 108         naughty.destroy(self._notification)
 109         self._notification = nil
 110     end
 111
 112     if not delay then
 113         destroy()
 114         return
 115     end
 116
 117     if self._hide_timer and self._hide_timer.started then
 118         self._hide_timer.timeout = delay
 119         self._hide_timer:again()
 120     else
 121         self._hide_timer = timer(
 122             { timeout = delay
 123             , autostart = true
 124             , single_shot = true
 125             , callback = destroy
 126             })
 127     end
 128 end
 129
 130 function widget:popup_update()
 131     if not self._notification then return end
 132     self._connection:send("status", function(_, status)
 133         self._status = status
 134         local table = self:get_info()
 135         if not self._notification then return end
 136         if not table then return end
 137         naughty.replace_text(self._notification, table.title, table.text)
 138     end)
 139 end
 140
 141 function widget:popup_oneshot(timeout)
 142     if self._notification then
 143         self:popup_hide()
 144         self:popup_show()
 145     else
 146         self:popup_show()
 147     end
 148     self:popup_hide(5)
 149 end
 150
 151 function widget:error_handler(err)
 152     self._textbox:set_text("Error: " .. tostring(err))
 153     self._status = {}
 154 end
 155
 156 function widget:run()
 157     self._status = {}
 158
 159     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 160         "player", function(conn)
 161             conn:send("status", function(err, status)
 162                 local songchanged = self._status.songid ~= status.songid
 163                 local statechanged = self._status.state ~= status.state
 164                 self._status = status
 165                 if not songchanged then
 166                     self:update_widget()
 167                     if statechanged then
 168                         self:popup_oneshot(5)
 169                     end
 170                     return
 171                 end
 172
 173                 conn:send("currentsong", function(_, song)
 174                     self._currentsong = song
 175                     if not song then
 176                         self:update_widget()
 177                         return
 178                     end
 179                     conn:albumart(song.file, function(_, art)
 180                         self._albumart = art
 181                         self:update_widget()
 182                         self:popup_oneshot(5)
 183                     end)
 184                 end)
 185             end)
 186         end
 187     )
 188
 189     self._keep_alive_timer = timer {
 190       timeout = 1
 191     , autostart = true
 192     , callback = function() self._connection:connect() end
 193     , call_now = true
 194     }
 195
 196     self._timer = timer({ timeout = 1 })
 197     self._timer:connect_signal("timeout", function() self:popup_update() end)
 198
 199     self._hover = false;
 200     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 201     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 202 end
 203
 204 widget:run()
 205
 206 widget.scroll:buttons(gears.table.join(
 207   awful.button({}, 1, function() widget._connection:toggle_play() end)
 208 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 209 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 210 )
 211
 212 globalkeys = gears.table.join(globalkeys,
 213     --TODO headphone support
 214     awful.key({ }, "XF86AudioPlay", function() widget._connection:play() end,
 215               { description = "play", group = "mpd" }),
 216     awful.key({ }, "XF86AudioPause", function() widget._connection:pause() end,
 217               { description = "pause", group = "mpd" }),
 218     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 219               { description = "toogle play", group = "mpd" }),
 220     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 221               { description = "show more info", group = "mpd" }),
 222     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 223               { description = "previous track", group = "mpd" }),
 224     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 225               { description = "next track", group = "mpd" })
 226 )
 227 return {
 228     layout = wibox.layout.align.horizontal,
 229     forced_width = 200,
 230     expand = "outside",
 231     nil,
 232     widget.scroll,
 233     nil,
 234 }