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