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 function widget:get_info(callback)
  47     local status = nil
  48     self._connection:send("status", function(_, s) status = s end)
  49
  50     local song = nil
  51     self._connection:send("currentsong", function(_, s) song = s end)
  52
  53     self._connection:send("ping", function()
  54
  55         local info = {}
  56         info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  57         info.text = tostring(song.artist or "") .. " - " .. tostring(song.title or "") .. "\n"
  58             .. tostring(song.album or "")
  59         callback(info)
  60     end)
  61 end
  62
  63 function widget:popup_show()
  64     self:get_info(function(table)
  65         if self._notification then return end
  66         self._notification = naughty.notify(
  67             { title = table.title
  68             -- , icon = img
  69             , text = table.text
  70             , timeout = 0
  71             , destroy = function() self._timer:stop() end
  72             })
  73         self._timer:start()
  74     end)
  75 end
  76
  77 function widget:popup_hide(delay)
  78     if self._hide_timer and self._hide_timer.started then
  79         self._hide_timer:again()
  80     else
  81         self._hide_timer = timer(
  82             { timeout = delay
  83             , autostart = true
  84             , single_shot = true
  85             , callback = function()
  86                 if self._hover then return end
  87                 if not self._notification then return end
  88                 naughty.destroy(self._notification)
  89                 self._notification = nil
  90                 end
  91             })
  92     end
  93 end
  94
  95 function widget:popup_update()
  96     self:get_info(function(table)
  97         if not self._notification then return end
  98         naughty.replace_text(self._notification, table.title, table.text)
  99     end)
 100 end
 101
 102 function widget:popup_oneshot(timeout)
 103     if self._notification then
 104         self:popup_update()
 105         self:popup_hide(5)
 106     else
 107         self:popup_show()
 108         self:popup_hide(5)
 109     end
 110 end
 111
 112 function widget:error_handler(err)
 113     self._textbox:set_text("Error: " .. tostring(err))
 114     timer.start_new(10, function()
 115         self._connection:send("ping")
 116     end)
 117 end
 118
 119 function widget:run()
 120     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 121         "status", function(_, result)
 122             if not self._status or result.state ~= self._status.state then
 123                 self._status = result
 124                 self:update_widget()
 125                 self:popup_oneshot(5)
 126             end
 127         end,
 128         "currentsong", function(_, result)
 129             if not self._currentsong or result.id ~= self._currentsong.id then
 130                 self._currentsong = result
 131                 self:update_widget()
 132                 self:popup_oneshot(5)
 133             end
 134         end
 135     )
 136
 137     self._timer = timer({ timeout = 1 })
 138     self._timer:connect_signal("timeout", function() self:popup_update() end)
 139
 140     self._hover = false;
 141     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 142     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 143 end
 144
 145 widget:run()
 146
 147 widget.scroll:buttons(gears.table.join(
 148   awful.button({}, 1, function() widget._connection:toggle_play() end)
 149 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 150 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 151 )
 152
 153 globalkeys = gears.table.join(globalkeys,
 154     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 155               { description = "toogle play", group = "mpd" }),
 156     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 157               { description = "show more info", group = "mpd" }),
 158     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 159               { description = "previous track", group = "mpd" }),
 160     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 161               { description = "next track", group = "mpd" })
 162 )
 163 return {
 164     layout = wibox.layout.align.horizontal,
 165     forced_width = 200,
 166     expand = "outside",
 167     nil,
 168     widget.scroll,
 169     nil,
 170 }