#!/bin/bash
# Name:		Nvidia Brightness Script
# Author:	Levi Self <levi@obeyingthetruth.com>
# URL:		http://levi.obeyingthetruth.com
# Date:		Mon Aug 24 09:51:21 EDT 2009
#
# Description:	Sets the screen brightness.
# Information:	I was tired of not being able to set
#		my screen brightness for awhile, so I
#		did some research and found out how to
#		assign values to the nvidia-settings exec.
#
# Usage:	nv-brightness
#			--bright	Set back to normal brightness
#			--dim		Set to 0.75 dimness.
#			--set INT	Set to a custom brightness


nv="/usr/bin/nvidia-settings"


if [[ $1 ]]; then

	if [[ $1 == "--bright" ]]; then

		# Set the Brightness back to normal.
		$nv --assign 0/RedBrightness=0.000000 &> /dev/null
		$nv --assign 0/GreenBrightness=0.000000 &> /dev/null
		$nv --assign 0/BlueBrightness=0.000000 &> /dev/null
		
		exit 0
	fi

	if [[ $1 == "--dim" ]]; then

		# Set the Brightness back to a default dim.
		$nv --assign 0/RedBrightness=-0.756140 &> /dev/null
		$nv --assign 0/GreenBrightness=-0.756140 &> /dev/null
		$nv --assign 0/BlueBrightness=-0.756140 &> /dev/null

		exit 0
	fi

	if [[ $1 == "--set" ]]; then
		if [[ $2 ]]; then
			$nv --assign 0/RedBrightness=-$2 &> /dev/null
			$nv --assign 0/GreenBrightness=-$2 &> /dev/null
			$nv --assign 0/BlueBrightness=-$2 &> /dev/null

			exit 0
		else
			echo "Error: The --set option requires an interger"
			exit 1
		fi
	fi
else

# print the usage
echo "Usage $0"
echo "		--bright	Set the brightness to normal."
echo "		--dim		Dim the brightness"
echo "		--set INT	Set a custom brightness"

exit 1

fi