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 info = {}
  64     local status, song = self._status, self._currentsong
  65     info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  66     if not song.artist then
  67         info.text = string.format("%s", song.title or song.file)
  68     else
  69         info.text = string.format("%s - %s", song.artist, song.title)
  70     end
  71     if song.album then
  72         info.text = info.text .. "\n" .. tostring(song.album or "")
  73     end
  74
  75     return info
  76 end
  77
  78 function widget:popup_show()
  79     if self._notification then return end
  80     local table = self:get_info()
  81     self._timer:start()
  82     self._notification = naughty.notify(
  83         { title = table.title
  84         , icon = self:get_albumart()
  85         , icon_size = 64
  86         , text = table.text
  87         , timeout = 0
  88         , destroy = function() self._timer:stop(); self._notification = nil end
  89         })
  90 end
  91
  92 function widget:popup_hide(delay)
  93     local function destroy()
  94         if self._hover then return end
  95         if not self._notification then return end
  96         naughty.destroy(self._notification)
  97         self._notification = nil
  98     end
  99
 100     if not delay then
 101         destroy()
 102         return
 103     end
 104
 105     if self._hide_timer and self._hide_timer.started then
 106         self._hide_timer.timeout = delay
 107         self._hide_timer:again()
 108     else
 109         self._hide_timer = timer(
 110             { timeout = delay
 111             , autostart = true
 112             , single_shot = true
 113             , callback = destroy
 114             })
 115     end
 116 end
 117
 118 function widget:popup_update()
 119     if not self._notification then return end
 120     self._connection:send("status", function(_, status)
 121         self._status = status
 122         local table = self:get_info()
 123         if not self._notification then return end
 124         naughty.replace_text(self._notification, table.title, table.text)
 125     end)
 126 end
 127
 128 function widget:popup_oneshot(timeout)
 129     if self._notification then
 130         self:popup_hide()
 131         self:popup_show()
 132     else
 133         self:popup_show()
 134     end
 135     self:popup_hide(5)
 136 end
 137
 138 function widget:error_handler(err)
 139     self._textbox:set_text("Error: " .. tostring(err))
 140     timer.start_new(10, function()
 141         self._connection:send("ping")
 142     end)
 143 end
 144
 145 function widget:run()
 146     self._status = {}
 147     self._status.songid = nil
 148
 149     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 150         "player", function(conn)
 151             conn:send("status", function(err, status)
 152                 local songchanged = self._status.songid ~= status.songid
 153                 self._status = status
 154                 if not songchanged then
 155                     self:update_widget()
 156                     return
 157                 end
 158
 159                 conn:send("currentsong", function(_, song)
 160                     self._currentsong = song
 161                     conn:albumart(song.file, function(_, art)
 162                         self._albumart = art
 163                         self:update_widget()
 164                         self:popup_oneshot(5)
 165                     end)
 166                 end)
 167             end)
 168         end
 169     )
 170
 171     self._timer = timer({ timeout = 1 })
 172     self._timer:connect_signal("timeout", function() self:popup_update() end)
 173
 174     self._hover = false;
 175     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 176     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 177 end
 178
 179 widget:run()
 180
 181 widget.scroll:buttons(gears.table.join(
 182   awful.button({}, 1, function() widget._connection:toggle_play() end)
 183 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 184 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 185 )
 186
 187 globalkeys = gears.table.join(globalkeys,
 188     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 189               { description = "toogle play", group = "mpd" }),
 190     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 191               { description = "show more info", group = "mpd" }),
 192     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 193               { description = "previous track", group = "mpd" }),
 194     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 195               { description = "next track", group = "mpd" })
 196 )
 197 return {
 198     layout = wibox.layout.align.horizontal,
 199     forced_width = 200,
 200     expand = "outside",
 201     nil,
 202     widget.scroll,
 203     nil,
 204 }