Displays the battery status of your devices, designed to be used with GeekTool

radialBattery.sh

	##################################################################
	#                YOU NEED IMAGE MAGICK TO RUN THIS               #
	#   DON'T FORGET TO CONFIGURE THE FIRST FEW LINES OF THIS FILE   #
	##################################################################
	#				Usage
	#   1st - Run this script as a shell geeklet.
	#
	#   You need to pass one of the following parameters:
	#      ·trackpad
	#      ·mouse
	#      ·keyboard
	#
	#   2nd. Add an image geeklet with the following path:
	#      $sourceDir/$identifier.png
	#   where $identifier depends on your previous parameter:
	#      ·trackpad: BNBTrackpadDevice
	#      ·mouse: BNBMouseDevice
	#      ·keyboard AppleBluetoothHIDKeyboard
	#
	##################################################################
	
	export MAGICK_HOME=~/Documents/ImageMagick-6.7.2
	export DYLD_LIBRARY_PATH=$MAGICK_HOME/lib/
	
	#Where everything regarding this script will live (I also like to place this file there)
	sourceDir=~/Documents/Geeklets
	
	#The font to use when writing the percent
	font=$sourceDir/HelveticaNeue.dfont
	fontsize=32
	
	#The width and height of the generated image
	width=100
	
	
	# Main Configuration finished, you can leave alone everything that follows
	
	#We default to trackpad, why? because I have a trackpad!
	#if [ $1 = "trackpad" ]
	#then
		title="Trackpad Battery"
		identifier="BNBTrackpadDevice"
	#fi
	
	if [ $1 = "keyboard" ]
	then
		title="Keyboard Battery"
		identifier="AppleBluetoothHIDKeyboard"
	fi
	if [ $1 = "mouse" ]
	then
		title="Mouse Battery"
		identifier="BNBMouseDevice"
	fi

	dest=$sourceDir/$identifier.png
	
	percent=`ioreg -c $identifier | grep BatteryPercent | sed 's/[a-z,A-Z, ,|,",=]//g' | awk '{print $1}'`
	percent=`echo "tmp=$percent; tmp /= 1" | bc`
	
	height=$width
	margin=5
	centerx=`expr $width / 2`
	centery=`expr $height / 2`
	center=$centerx,$centery
	radius=`expr $height / 2 - $margin`

	#glowColor="#0069ec"
	glowColor=red
	
	if [ $percent -gt 11 ]
	then
		glowColor=orange
	fi
	if [ $percent -gt 30 ]
	then
		glowColor=green
	fi
	
	endAngle=`expr $percent \* 360`
	endAngle=`expr $endAngle / 100`
	
	a=`echo "s($endAngle * (3.14159265/180)) * $radius" | bc -l`
	b=`echo "c($endAngle * (3.14159265/180)) * $radius" | bc -l`
	
	$MAGICK_HOME/bin/convert  -size "$width"x"$height" \
	 			xc:transparent \
	 			-fill transparent \
				-stroke white \
	 		  -strokeWidth 2 \
	          -draw "ellipse  $center $radius,$radius 0,$endAngle"\
			  -fill white \
			  -draw "circle `expr $centerx + $radius`,$centery `expr $centerx + $radius + 1`,`expr $centery + 1`" \
			  -draw "circle `echo $b + $margin + $radius | bc`,`echo $a + $radius + $margin| bc` `echo $b + $radius + $margin + 1 | bc`,`echo $a + $radius + 1  + $margin | bc`" \
			  -rotate -90 \
	 		 -strokeWidth .2 \
			 -stroke transparent \
			 -fill white \
			 -pointsize $fontsize \
			 -font $font \
			 -gravity center \
			 -draw "text 0,0 '$percent%'" \
	          \( \
	          	+clone \
				-channel A \
				-blur 0x2.5 \
				-level 0,50% \
				+channel \
              	+level-colors $glowColor \
	         \) \
	 		 -strokeWidth .5 \
	 		 -stroke "rgba(255,255,255,.3)" \
			 -fill transparent \
	         -draw "ellipse  $center `expr $height / 2 - $margin`,`expr $height / 2 - $margin` 0,360"\
	         -compose DstOver -composite  $dest

	echo $title

	unset sourceDir
	unset dest
	unset font
	unset fontsize
	unset width
	unset height
	unset margin
	unset center
	unset percent
	unset glowColor
	unset endAngle
	unset centerx
	unset centery
	unset radius
	unset a
	unset b
	unset title
	unset identifier
	

    ####################################################################################
    #                        Licensed under the GPL V.3                                #
    #              Copyright (C) 2011  Javier Alejandro Parra Cervantes                #
    #                           http://www.javierparra.mx                              #
    ####################################################################################
    #   This program is free software: you can redistribute it and/or modify           #
    #   it under the terms of the GNU General Public License as published by           #
    #   the Free Software Foundation, either version 3 of the License, or              #
    #   (at your option) any later version.                                            #
    ####################################################################################
    #   This program is distributed in the hope that it will be useful,                #
    #   but WITHOUT ANY WARRANTY; without even the implied warranty of                 #
    #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                  #
    #   GNU General Public License for more details.                                   #
    ####################################################################################
    #   You should have received a copy of the GNU General Public License              #
    #   along with this program.  If not, see <http://www.gnu.org/licenses/>.          #
    ####################################################################################