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     step_function = wibox.container.scroll.step_functions.linear_increase,
  17     speed = 20,
  18     {
  19         widget = widget._textbox,
  20     }
  21 }
  22
  23 function widget:update_widget()
  24     local text = ""
  25     local artist = self._currentsong.artist
  26     local title = self._currentsong.title
  27     local file = self._currentsong.file
  28     if not artist then
  29         text = string.format("%s", title or file )
  30     else
  31         text = string.format("%s - %s", artist, title)
  32     end
  33     self._textbox.text = text
  34 end
  35
  36 local function sec_to_min(sec)
  37     m, s = math.modf((sec or 0.0) / 60)
  38     return string.format('%d:%02d', m, math.floor(s * 60))
  39 end
  40
  41 local function song_duration(elapsed, duration)
  42     return sec_to_min(elapsed) .. "/" .. sec_to_min(duration)
  43 end
  44
  45 function widget:get_info(callback)
  46     local status = nil
  47     self._connection:send("status", function(_, s) status = s end)
  48
  49     local song = nil
  50     self._connection:send("currentsong", function(_, s) song = s end)
  51
  52     self._connection:send("ping", function()
  53
  54         local info = {}
  55         info.title = status.state .. " " .. status.song .. "/" .. status.playlistlength .. " " .. song_duration(status.elapsed, status.duration)
  56         info.text = tostring(song.artist or "") .. " - " .. tostring(song.title or "") .. "\n"
  57             .. tostring(song.album or "")
  58         callback(info)
  59     end)
  60 end
  61
  62 function widget:popup_show()
  63     self:get_info(function(table)
  64         if self._notification then return end
  65         self._notification = naughty.notify(
  66             { title = table.title
  67             -- , icon = img
  68             , text = table.text
  69             , timeout = 0
  70             , destroy = function() self._timer:stop() end
  71             })
  72         self._timer:start()
  73     end)
  74 end
  75
  76 function widget:popup_hide(delay)
  77     if self._hide_timer and self._hide_timer.started then
  78         self._hide_timer:again()
  79     else
  80         self._hide_timer = timer(
  81             { timeout = delay
  82             , autostart = true
  83             , single_shot = true
  84             , callback = function()
  85                 if self._hover then return end
  86                 if not self._notification then return end
  87                 naughty.destroy(self._notification)
  88                 self._notification = nil
  89                 end
  90             })
  91     end
  92 end
  93
  94 function widget:popup_update()
  95     self:get_info(function(table)
  96         if not self._notification then return end
  97         naughty.replace_text(self._notification, table.title, table.text)
  98     end)
  99 end
 100
 101 function widget:popup_oneshot(timeout)
 102     if self._notification then
 103         self:popup_update()
 104         self:popup_hide(5)
 105     else
 106         self:popup_show()
 107         self:popup_hide(5)
 108     end
 109 end
 110
 111 function widget:error_handler(err)
 112     self._textbox:set_text("Error: " .. tostring(err))
 113     timer.start_new(10, function()
 114         self._connection:send("ping")
 115     end)
 116 end
 117
 118 function widget:run()
 119     self._connection = mpc.new(nil, nil, nil, function(err) self:error_handler(err) end,
 120         "status", function(_, result)
 121             if not self._status or result.state ~= self._status.state then
 122                 self._status = result
 123                 self:update_widget()
 124                 self:popup_oneshot(5)
 125             end
 126         end,
 127         "currentsong", function(_, result)
 128             if not self._currentsong or result.id ~= self._currentsong.id then
 129                 self._currentsong = result
 130                 self:update_widget()
 131                 self:popup_oneshot(5)
 132             end
 133         end
 134     )
 135
 136     self._timer = timer({ timeout = 1 })
 137     self._timer:connect_signal("timeout", function() self:popup_update() end)
 138
 139     self._hover = false;
 140     self.scroll:connect_signal("mouse::enter", function() self._hover = true;  self:popup_show()  end)
 141     self.scroll:connect_signal("mouse::leave", function() self._hover = false; self:popup_hide(2) end)
 142 end
 143
 144 widget:run()
 145
 146 widget.scroll:buttons(gears.table.join(
 147   awful.button({}, 1, function() widget._connection:toggle_play() end)
 148 , awful.button({}, 4, function() widget._connection:change_volume(5) end)
 149 , awful.button({}, 5, function() widget._connection:change_volume(-5) end))
 150 )
 151
 152 globalkeys = gears.table.join(globalkeys,
 153     awful.key({ modkey }, "p", function() widget._connection:toggle_play() end,
 154               { description = "toogle play", group = "mpd" }),
 155     awful.key({ modkey }, "'", function() widget:popup_oneshot(5) end,
 156               { description = "show more info", group = "mpd" }),
 157     awful.key({ modkey }, ",", function() widget._connection:send("previous") end,
 158               { description = "previous track", group = "mpd" }),
 159     awful.key({ modkey }, ".", function() widget._connection:send("next") end,
 160               { description = "next track", group = "mpd" })
 161 )
 162 return {
 163     layout = wibox.layout.align.horizontal,
 164     forced_width = 200,
 165     expand = "outside",
 166     nil,
 167     widget.scroll,
 168     nil,
 169 }