#!/bin/bash
# Dual Monitor Window placement script -- Williams alw@al-williams.com
# Version Beta 1, November 28 2009 - http://www.hotsolder.com

## This little script chops your screen up into 8 zones:
#  ABCD
#  EFGH
# (Obviously I'm assuming you have two monitors horizontally)
# So your left screen is ABEF and your right screen is CDGH
# You can also use 1 for the left screen and 2 for the right screen
#
# How to use it: Run this script (hint: assign it a global shortcut key)
# It will prompt you to press OK and then click on a window
# Then it will prompt you to enter the grid letters. Enter them in order.
# So you might enter A to get it at the top left or GH to get a double
# wide window at the bottom right. Or DH to get a double high window. 
# if you enter CDGH or 2 the app will jump to the 2nd screen
#
# What you need: 
# Stuff you can get out of the repos:
# Bash (duh), zenity, xwininfo, gawk, wmctrl
# You also need to use a window manager that works with wmctrl (most do)
#
# The script picks up the reported size of your screens automatically 
# This could be a problem if you have two mismatched screens since
#  know at least TwinView (NVidia) reports a bigger size (so if your
#  screens are 1600x900 and 1600x1024, TwinView reports 3200x1024
# So you may want to override
# Also, you will want to trim down the exact values so the window edges
# and all fit. You can adjust WTRIM and HTRIM below or use the options

# Options (all optional)
# -w 10 - Set width trim to 10
# -t 40 - Set height trim to 40
# -i 0x4942 - Use window ID instead of prompting for window
# -n 'mywin' - Identify window by title instead of prompting 
# Note: -n doesn't work well when 2 windows have same title!
# Note: Use -i -n or nothing but do not use -i and -n together
# -x 1600 - Override screen width to 1600
# -y 900 - Override screen height to 900
# -s ABEF - Use placer string and don't prompt
# -r - Do not raise window
# -q - Quiet (do not show intro dialog)

# TODO: Custom grid dialog to pick on a 4x2 grid
# I may do this with kdialog and/or pick zenity or kdialog depending on
# which is available


# max width and height trim down (adjust to suit)
WTRIM=40
HTRIM=40
PROMPTCMD=zenity
XWIOPT=
XWIARG=
CELLS=
NORAISE=0

# Max Width and Height
MW=`xwininfo -root | awk ' /^[ \\t]*Width:/ { print $2 }' `
MH=`xwininfo -root | awk ' /^[ \\t]*Height:/ { print $2 }' `

# process options
while getopts hw:t:i:n:qx:y:s:r o
do
	case "$o" in
	r) NORAISE=1 ;;
	w) WTRIM="$OPTARG" ;;
	t) HTRIM="$OPTARG" ;;
	i) XWIOPT="-i" ; XWIARG="$OPTARG"  ;;
	n) XWIOPT="-name" ; XWIARG="$OPTARG" ;;
	x) MW="$OPTARG" ;;
	y) MH="$OPTARG" ;;
	s) CELLS="$OPTARG" ;;
	q) PROMPTCMD=false ;;
	[?]|h) echo "Usage $0 [-x screen_width] [-y screen_height] [-w width_trim] [-h height_trim] [-i window_id] [-n window_name] -q" 1>&2
	exit 1 ;;
    esac
done

# Calculate Trimmed sizes
MWT=`expr $MW - $WTRIM`
MHT=`expr $MH - $HTRIM`

# Calculate 1 cell width and height and their trimmed versions
W1=`expr $MW / 4`
H1=`expr $MH / 2`
W1T=`expr $MWT / 4`
H1T=`expr $MHT / 2`

# prompt user so as not to confuse
if [ "$XWIOPT" == "" ]
then $PROMPTCMD --info --text 'Press OK and then select a window' --title 'Window Placer'
fi

# find out ID of window selected
if [ "$XWIOPT" != "" ]
then WID=`xwininfo $XWIOPT "$XWIARG" | awk '/xwininfo: Window id:/ { print $4 } ' `
else WID=`xwininfo | awk '/xwininfo: Window id:/ { print $4 } ' `
fi
if [ "$WID" == "" ]
then
	echo  "Unknown window" 1>&2
	exit 2
fi

# get position requested
if [ "$CELLS" == "" ]
then CELLS=`zenity --title 'Window Placer' --entry --text 'Your screens are divided into a 4x2 grid.
The top 4 cells are ABCD and the
bottom cells are EFGH. Or pick a screen (1 or 2).
Pick which cells you wouldd like for this window to occupy.

ABCD    -or-   12
EFGH' `
  if [ $? -ne 0 ] 
  then
    echo Cancelled
    exit 3
  fi
fi

# Do the processing
case $CELLS in
[aA])
	X=0
	Y=0
	W=$W1T
	H=$H1T
;;
[bB])
	X=$W1
	Y=0
	W=$W1T
	H=$H1T
;;

[cC])
	X=`expr 2 \* $W1`
	Y=0
	W=$W1T
	H=$H1T

;;
[dD])
	X=`expr 3 \* $W1`
	Y=0
	W=$W1T
	H=$H1T

;;
[eE])
	X=0
	Y=$H1
	W=$W1T
	H=$H1T
;;
[fF])
	X=$W1
	Y=$H1
	W=$W1T
	H=$H1T
;;

[gG])
	X=`expr 2 \* $W1`
	Y=$H1
	W=$W1T
	H=$H1T

;;
[hH])
	X=`expr 3 \* $W1`
	Y=$H1
	W=$W1T
	H=$H1T

;;

[aA][bB])
	X=0
	Y=0
	W=`expr 2 \* $W1T`
	H=$H1T
;;

[bB][cC])
	X=$W1
	Y=0
	W=`expr 2 \* $W1T`
	H=$H1T
;;
[cC][dD])
	X=`expr 2 \* $W1`
	Y=0
	W=`expr 2 \* $W1T`
	H=$H1T
;;
[eE][fF])
	X=0
	Y=$H1
	W=`expr 2 \* $W1T`
	H=$H1T
;;

[fF][gG])
	X=$W1
	Y=$H1
	W=`expr 2 \* $W1T`
	H=$H1T
;;
[gG][hH])
	X=`expr 2 \* $W1`
	Y=$H1
	W=`expr 2 \* $W1T`
	H=$H1T
;;
[aA][bB][cC])
	X=0
	Y=0
	W=`expr 3 \* $W1T`
	H=$H1T
;;

[bB][cC][dD])
	X=$W1
	Y=0
	W=`expr 3 \* $W1T`
	H=$H1T
;;
[eE][fF][gG])
	X=0
	Y=$H1
	W=`expr 3 \* $W1T`
	H=$H1T

;;

[fF][gG][hH])
	X=$W1
	Y=$H1
	W=`expr 3 \* $W1T`
	H=$H1T
;;
[aA][bB][cC][dD])
	X=0
	Y=0
	W=$MWT
	H=$H1T
;;
[eE][fF][gG][hH])
	X=0
	Y=$H1
	W=$MWT
	H=$H1T
;;

[aA][eE])
	X=0
	Y=0
	W=$W1T
	H=$MHT
;;
[bB][fF])
	X=$W1
	Y=0
	W=$W1T
	H=$MHT
;;
[cC][gG])
	X=`expr 2 \* $W1`
	Y=0
	W=$W1T
	H=$MHT
;;
[dD][hH])
	X=`expr 3 \* $W1`
	Y=0
	W=$W1T
	H=$MHT
;;

[aA][bB][eE][fF]|1)
	X=0
	Y=0
	W=`expr 2 \* $W1T`
	H=$MHT
;;
[bB][cC][fF][gG])
	X=$W1
	Y=0
	W=`expr 2 \* $W1T`
	H=$MHT
;;
[cC][dD][gG][hH]|2)

	X=`expr 2 \* $W1`
	Y=0
	W=`expr 2 \* $W1T`
	H=$MHT
;;

*)
	zenity  --title 'Window Placer' --error --text 'Unknown position command'
	exit 5
;;  

esac

if [ $NORAISE -eq 0 ]
then wmctrl -i -R $WID
fi
wmctrl -i -r $WID -e 0,$X,$Y,$W,$H
exit $?