lain/alsabar.md

Shows and controls alsa volume with a progressbar.

Dependencies:

• alsa-utils (of course)

Plus tooltips, notifications, and color changes at mute/unmute switch.

myvolumebar = lain.widgets.alsabar()

• Left click: Launch alsamixer in your terminal.
• Right click: Mute/unmute.
• Scroll wheel: Increase/decrase volume.

The function takes a table as optional argument, which can contain:

Variable	Meaning	Type	Default
width	Bar width	int	63
height	Bar height	int	1
ticks	Set bar ticks on	boolean	true
ticks_size	Ticks size	int	7
vertical	Set the bar vertical	boolean	false
channel	Mixer channel	string	"Master"
step	Step at which volume is increased/decreased	string	"5%"
colors	Bar colors	table	see colors
notifications	Notifications settings	table	see notifications

colors

Variable	Meaning	Type	Default
background	Bar backgrund color	string	beautiful.bg_normal
mute	Bar mute color	string	"#EB8F8F"
unmute	Bar unmute color	string	"#A4CE8A"

notifications

Variable	Meaning	Type	Default
font	Notifications font	string	The one defined in beautiful.font
font_size	Notifications font size	string	"11"
bar_size	Wibox height	int	18

It's crucial to set notifications.bar_size to your mywibox[s] height, if you have set it different than default (18).

lain.widgets.alsabar outputs the following table:

Variable	Type
widget	awful.widget.progressbar
channel	string
step	string
notify	function

Finally, you can control the widget with key bindings like these:

    -- Volume control
    awful.key({ altkey }, "Up",
    function ()
        awful.util.spawn("amixer sset " .. volume.channel .. " " .. volume.step .. "+")
        volume.notify()
    end),
    awful.key({ altkey }, "Down",
    function ()
        awful.util.spawn("amixer sset " .. volume.channel .. " " .. volume.step .. "-")
        volume.notify()
    end),
    awful.key({ altkey }, "m",
    function ()
        awful.util.spawn("amixer set Master playback toggle")
        volume.notify()
    end),
    awful.key({ altkey, "Control" }, "m", 
    function ()
        awful.util.spawn("amixer set Master playback 100%", false )
        volume.notify()
    end),

where altkey = "Mod1".