Add line_callback and edit async helpers

[etc/awesome.git] / widget / alsabar.lua

diff --git a/widget/alsabar.lua b/widget/alsabar.lua
index 7aa8835f2a15881277e9ed9498adfc22def6621b..750933a1eeed49e4c490b049eb67c4fbce940782 100644 (file)
--- a/widget/alsabar.lua
+++ b/widget/alsabar.lua
@@ -1,38 +1,36 @@
-
 --[[
-                                                  
-     Licensed under GNU General Public License v2 
-      * (c) 2013, Luke Bonham                     
-      * (c) 2013, Rman                            
-                                                  
+
+     Licensed under GNU General Public License v2
+      * (c) 2013, Luke Bonham
+      * (c) 2013, Rman
+
 --]]
 
-local helpers      = require("lain.helpers")
-local awful        = require("awful")
-local naughty      = require("naughty")
-local wibox        = require("wibox")
-local math         = { modf   = math.modf }
-local string       = { format = string.format,
-                       match  = string.match,
-                       rep    = string.rep }
-local type         = type
-local tonumber     = tonumber
-local setmetatable = setmetatable
+local helpers        = require("lain.helpers")
+local awful          = require("awful")
+local naughty        = require("naughty")
+local wibox          = require("wibox")
+local math           = { modf   = math.modf }
+local string         = { format = string.format,
+                         match  = string.match,
+                         rep    = string.rep }
+local type, tonumber = type, tonumber
 
 -- ALSA volume bar
 -- lain.widget.alsabar
-local alsabar = {
-    colors = {
-        background = "#000000",
-        mute       = "#EB8F8F",
-        unmute     = "#A4CE8A"
-    },
-
-    _current_level = 0,
-    _muted         = false
-}
 
 local function factory(args)
+    local alsabar = {
+        colors = {
+            background = "#000000",
+            mute       = "#EB8F8F",
+            unmute     = "#A4CE8A"
+        },
+
+        _current_level = 0,
+        _playback      = "off"
+    }
+
     local args       = args or {}
     local timeout    = args.timeout or 5
     local settings   = args.settings or function() end
@@ -76,23 +74,27 @@ local function factory(args)
 
     function alsabar.update(callback)
         helpers.async(format_cmd, function(mixer)
-            local volu,mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
-            if (volu and tonumber(volu) ~= alsabar._current_level) or (mute and string.match(mute, "on") ~= alsabar._muted) then
-                alsabar._current_level = tonumber(volu) or alsabar._current_level
+            local vol, playback = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
+
+            if not vol or not playback then return end
+
+            if vol ~= alsabar._current_level or playback ~= alsabar._playback then
+                alsabar._current_level = tonumber(vol)
                 alsabar.bar:set_value(alsabar._current_level / 100)
-                if (not mute and tonumber(volu) == 0) or mute == "off" then
-                    alsabar._muted = true
-                    alsabar.tooltip:set_text ("[Muted]")
+                if alsabar._current_level == 0 or playback == "off" then
+                    alsabar._playback = playback
+                    alsabar.tooltip:set_text("[Muted]")
                     alsabar.bar.color = alsabar.colors.mute
                 else
-                    alsabar._muted = false
-                    alsabar.tooltip:set_text(string.format("%s: %s", alsabar.channel, volu))
+                    alsabar._playback = "on"
+                    alsabar.tooltip:set_text(string.format("%s: %s", alsabar.channel, vol))
                     alsabar.bar.color = alsabar.colors.unmute
                 end
 
-                volume_now = {}
-                volume_now.level = tonumber(volu)
-                volume_now.status = mute
+                volume_now = {
+                    level  = alsabar._current_level,
+                    status = alsabar._playback
+                }
 
                 settings()
 
@@ -105,10 +107,10 @@ local function factory(args)
         alsabar.update(function()
             local preset = alsabar.notification_preset
 
-            if alsabar._muted then
-                preset.title = string.format("%s - Muted", alsabar.channel)
-            else
-                preset.title = string.format("%s - %s%%", alsabar.channel, alsabar._current_level)
+            preset.title = string.format("%s - %s%%", alsabar.channel, alsabar._current_level)
+
+            if alsabar._playback == "off" then
+                preset.title = preset.title .. " Muted"
             end
 
             int = math.modf((alsabar._current_level / 100) * awful.screen.focused().mywibox.height)
@@ -133,4 +135,4 @@ local function factory(args)
     return alsabar
 end
 
-return setmetatable(alsabar, { __call = function(_, ...) return factory(...) end })
+return factory