1 files changed, 174 insertions, 0 deletions
diff --git a/lain/widgets/alsabar.lua b/lain/widgets/alsabar.lua
new file mode 100644
index 0000000..1421975
--- /dev/null
+++ b/lain/widgets/alsabar.lua
@@ -0,0 +1,174 @@
+
+--[[
+                                                  
+     Licensed under GNU General Public License v2 
+      * (c) 2013, Luke Bonham                     
+      * (c) 2013, Rman                            
+                                                  
+--]]
+
+local newtimer     = require("lain.helpers").newtimer
+
+local awful        = require("awful")
+local beautiful    = require("beautiful")
+local naughty      = require("naughty")
+
+local io           = { popen  = io.popen }
+local math         = { modf   = math.modf }
+local string       = { format = string.format,
+                       match  = string.match,
+                       rep    = string.rep }
+local tonumber     = tonumber
+
+local setmetatable = setmetatable
+
+-- ALSA volume bar
+-- lain.widgets.alsabar
+local alsabar = {
+    card    = "0",
+    channel = "Master",
+    step    = "2%",
+
+    colors = {
+        background = beautiful.bg_normal,
+        mute       = "#EB8F8F",
+        unmute     = "#A4CE8A"
+    },
+
+    terminal = terminal or "xterm",
+    mixer    = terminal .. " -e alsamixer",
+
+    notifications = {
+        font      = beautiful.font:sub(beautiful.font:find(""), beautiful.font:find(" ")),
+        font_size = "11",
+        color     = beautiful.fg_normal,
+        bar_size  = 18,
+        screen    = 1
+    },
+
+    _current_level = 0,
+    _muted         = false
+}
+
+function alsabar.notify()
+    alsabar.update()
+
+    local preset = {
+        title   = "",
+        text    = "",
+        timeout = 4,
+        screen  = alsabar.notifications.screen,
+        font    = alsabar.notifications.font .. " " ..
+                  alsabar.notifications.font_size,
+        fg      = alsabar.notifications.color
+    }
+
+    if alsabar._muted
+    then
+        preset.title = alsabar.channel .. " - Muted"
+    else
+        preset.title = alsabar.channel .. " - " .. alsabar._current_level .. "%"
+    end
+
+    int = math.modf((alsabar._current_level / 100) * alsabar.notifications.bar_size)
+    preset.text = "["
+                .. string.rep("|", int)
+                .. string.rep(" ", alsabar.notifications.bar_size - int)
+                .. "]"
+
+    if alsabar._notify ~= nil then
+        alsabar._notify = naughty.notify ({
+            replaces_id = alsabar._notify.id,
+            preset      = preset,
+        })
+    else
+        alsabar._notify = naughty.notify ({
+            preset = preset,
+        })
+    end
+end
+
+local function worker(args)
+    local args       = args or {}
+    local timeout    = args.timeout or 4
+    local settings   = args.settings or function() end
+    local width      = args.width or 63
+    local height     = args.heigth or 1
+    local ticks      = args.ticks or false
+    local ticks_size = args.ticks_size or 7
+    local vertical   = args.vertical or false
+
+    alsabar.cmd           = args.cmd or "amixer"
+    alsabar.channel       = args.channel or alsabar.channel
+    alsabar.step          = args.step or alsabar.step
+    alsabar.colors        = args.colors or alsabar.colors
+    alsabar.notifications = args.notifications or alsabar.notifications
+
+    alsabar.bar = awful.widget.progressbar()
+
+    alsabar.bar:set_background_color(alsabar.colors.background)
+    alsabar.bar:set_color(alsabar.colors.unmute)
+    alsabar.tooltip = awful.tooltip({ objects = { alsabar.bar } })
+    alsabar.bar:set_width(width)
+    alsabar.bar:set_height(height)
+    alsabar.bar:set_ticks(ticks)
+    alsabar.bar:set_ticks_size(ticks_size)
+    alsabar.bar:set_vertical(vertical)
+
+    function alsabar.update()
+        -- Get mixer control contents
+        local f = assert(io.popen(string.format("%s get %s", alsabar.cmd, alsabar.channel)))
+        local mixer = f:read("*a")
+        f:close()
+
+        -- Capture mixer control state:          [5%] ... ... [on]
+        local volu, mute = string.match(mixer, "([%d]+)%%.*%[([%l]*)")
+
+        if volu == nil then
+            volu = 0
+            mute = "off"
+        end
+
+        alsabar._current_level = tonumber(volu)
+        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] ")
+            alsabar.bar:set_color(alsabar.colors.mute)
+        else
+            alsabar._muted = false
+            alsabar.tooltip:set_text(string.format(" %s:%s ", alsabar.channel, volu))
+            alsabar.bar:set_color(alsabar.colors.unmute)
+        end
+
+        volume_now = {}
+        volume_now.level = tonumber(volu)
+        volume_now.status = mute
+        settings()
+    end
+
+    newtimer("alsabar", timeout, alsabar.update)
+
+    alsabar.bar:buttons (awful.util.table.join (
+          awful.button ({}, 1, function()
+            awful.util.spawn(alsabar.mixer)
+          end),
+          awful.button ({}, 3, function()
+            awful.util.spawn(string.format("amixer -c %s set %s toggle", alsabar.card, alsabar.channel))
+            alsabar.update()
+          end),
+          awful.button ({}, 4, function()
+            awful.util.spawn(string.format("amixer -c %s set %s %s+", alsabar.card, alsabar.channel, alsabar.step))
+            alsabar.update()
+          end),
+          awful.button ({}, 5, function()
+            awful.util.spawn(string.format("amixer -c %s set %s %s-", alsabar.card, alsabar.channel, alsabar.step))
+            alsabar.update()
+          end)
+    ))
+
+    return alsabar
+end
+
+return setmetatable(alsabar, { __call = function(_, ...) return worker(...) end })