awesome/widgets/mpd_widget.lua

   1 local mpc = require("widgets/mpc")
   2 local textbox = require("wibox.widget.textbox")
   3 local gears = require("gears")
   4 local awful = require("awful")
   5 local naughty = require("naughty")
   6 local timer = require("gears.timer")
   7 local wibox = require("wibox")
   8
   9 --TODO remove
  10 local dbg = require("gears.debug")
  11
  12 local widget = {}
  13 widget._textbox = textbox()
  14 widget._currentsong = {}
  15
  16 widget.scroll = wibox.widget {
  17     layout = wibox.container.scroll.horizontal,
  18     forced_width = 200,
  19     expand = true,
  20     step_function = wibox.container.scroll.step_functions.linear_increase,
  21     speed = 20,
  22     {
  23         widget = widget._textbox,
  24         align = 'center',
  25         valign = 'center'
  26     }
  27 }
  28
  29 function widget:update_widget()
  30     local text = ""
  31     local artist = self._currentsong.artist
  32     local title = self._currentsong.title
  33     local file = self._currentsong.file
  34     text = text .. tostring(artist or "") .. " - " .. tostring(title or "")
  35     if not artist then
  36         text = string.format("%s", title or file )
  37     else
  38         text = string.format("%s - %s", artist, title)
  39     end
  40     self._textbox.text = text
  41 end
  42
  43 local function sec_to_min(sec)
  44     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 function widget:get_info(callback)
  53     local status = nil
  54     self._connection:send("status", function(_, s) status = s end)
  55
  56     local song = nil
  57     self._connection:send("currentsong", function(_, s) song = s end)
  58
  59     self._connection:send("ping", function()
  60
  61         local info = {}
  62         info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  63         info.text = tostring(song.artist or "") .. " - " .. tostring(song.title or "") .. "\n"
  64             .. tostring(song.album or "")
  65         callback(info)
  66         return false
  67     end)
  68 end
  69
  70 function widget:popup_show()
  71     self:get_info(function(table)
  72         if self._notification then return end
  73         self._notification = naughty.notify(
  74             { title = table.title
  75             -- , icon = img
  76             , text = table.text
  77             , timeout = 0
  78             , destroy = function() self._timer:stop() end
  79             })
  80         self._timer:start()
  81     end)
  82 end
  83
  84 function widget:popup_hide(delay)
  85     if self._hide_timer and self._hide_timer.started then
  86         self._hide_timer:again()
  87     else
  88         self._hide_timer = timer(
  89             { timeout = delay
  90             , autostart = true
  91             , single_shot = true
  92             , callback = function()
  93                 if self._hover then return end
  94                 if not self._notification then return end
  95                 naughty.destroy(self._notification)
  96                 self._notification = nil
  97                 end
  98             })
  99     end
 100 end
 101
 102 function widget:popup_update()
 103     self:get_info(function(table)
 104         if not self._notification then return end
 105         naughty.replace_text(self._notification, table.title, table.text)
 106     end)
 107 end
 108
 109 function widget:popup_oneshot(timeout)
 110     if self._notification then
 111         self:popup_update()
 112         self:popup_hide(5)
 113     else
 114         self:popup_show()
 115         self:popup_hide(5)
 116     end
 117 end
 118
 119 function widget:error_handler(err)
 120     self._textbox:set_text("Error: " .. tostring(err))
 121     timer.start_new(10, function()
 122         self._connection:send("ping")
 123     end)
 124 end
 125
 126 function widget:run()
 127     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 128         "status", function(_, result)
 129             if not self._status or result.state ~= self._status.state then
 130                 self._status = result
 131                 self:update_widget()
 132                 self:popup_oneshot(5)
 133             end
 134         end,
 135         "currentsong", function(_, result)
 136             if not self._currentsong or result.id ~= self._currentsong.id then
 137                 self._currentsong = result
 138                 self:update_widget()
 139                 self:popup_oneshot(5)
 140             end
 141         end
 142     )
 143
 144     self._timer = timer({ timeout = 1 })
 145     self._timer:connect_signal("timeout", function() self:popup_update() end)
 146
 147     self._hover = false;
 148     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 149     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 150 end
 151
 152 widget:run()
 153
 154 widget.scroll:buttons(gears.table.join(
 155   awful.button({}, 1, function() widget._connection:toggle_play() end)
 156 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 157 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 158 )
 159
 160 globalkeys = gears.table.join(globalkeys,
 161     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 162               { description = "toogle play", group = "mpd" }),
 163     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 164               { description = "show more info", group = "mpd" }),
 165     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 166               { description = "previous track", group = "mpd" }),
 167     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 168               { description = "next track", group = "mpd" })
 169 )
 170 return widget.scroll