1 files changed, 68 insertions, 0 deletions
diff --git a/lain/widgets/alsa.lua b/lain/widgets/alsa.lua
new file mode 100644
index 0000000..a356892
--- /dev/null
+++ b/lain/widgets/alsa.lua
@@ -0,0 +1,68 @@
+
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013, Luke Bonham                     
+      * (c) 2010, Adrian C. <anrxc@sysphere.org>  
+                                                  
+--]]
+
+local newtimer        = require("lain.helpers").newtimer
+
+local wibox           = require("wibox")
+
+local io              = { popen  = io.popen }
+local string          = { match  = string.match,
+                          format = string.format }
+
+local setmetatable    = setmetatable
+
+-- ALSA volume
+-- lain.widgets.alsa
+local alsa = {}
+
+local function worker(args)
+    local args     = args or {}
+    local timeout  = args.timeout or 5
+    local settings = args.settings or function() end
+
+    alsa.cmd     = args.cmd or "amixer"
+    alsa.channel = args.channel or "Master"
+
+    alsa.widget = wibox.widget.textbox('')
+
+    function alsa.update()
+        local f = assert(io.popen(string.format("%s get %s", alsa.cmd, alsa.channel)))
+        local mixer = f:read("*a")
+        f:close()
+
+        volume_now = {}
+
+        volume_now.level, volume_now.status = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
+
+        if volume_now.level == nil
+        then
+            volume_now.level  = "0"
+            volume_now.status = "off"
+        end
+
+        if volume_now.status == ""
+        then
+            if volume_now.level == "0"
+            then
+                volume_now.status = "off"
+            else
+                volume_now.status = "on"
+            end
+        end
+
+        widget = alsa.widget
+        settings()
+    end
+
+    newtimer("alsa", timeout, alsa.update)
+
+    return setmetatable(alsa, { __index = alsa.widget })
+end
+
+return setmetatable(alsa, { __call = function(_, ...) return worker(...) end })