lain/brightness.md

<- widgets

Shows the current level of screen brightness in a textbox.

mybrightness = lain.widgets.contrib.brightness()

input table

Variable	Meaning	Type	Default
timeout	Refresh timeout seconds	int	5
backlight	Backlight video	string	"acpi_video0"
settings	User settings	function	empty function

settings can use the following variables:

Variable	Meaning	Type	Values
brightness_now	Brightness level	int	0-100

output table

Variable	Meaning	Type
widget	The widget	wibox.widget.textbox
update	Update widget	function

You can control the widget with key bindings like these:

-- Volume control
awful.key({}, "XF86MonBrightnessUp",
function ()
    awful.util.spawn("xbacklight -inc 1")
    brightnesswidget.update()
end),
awful.key({}, "XF86MonBrightnessDown",
function ()
    awful.util.spawn("xbacklight -dec 1")
    brightnesswidget.update()
end),