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