#!/bin/csh -f
# rotateimages
# -------------------------------------------------------------------------
# C shell script to open the specified images and allow the user to rotate
# them
# -------------------------------------------------------------------------
# Revision History:
# $Log$
# -------------------------------------------------------------------------

if ($#argv == 0 || $1:q == "-h" || $1:q == "--help") then
   echo "Usage: $0:t image_file..."
   exit 1
endif

# Open Preview app, allowing the user to rotate each image
# Note: If Preview's Inspector was open last time Preview showed an 
#       image, it opens again automatically, at the same tab as before.
#       Otherwise, the user should open Inspector via Cmd-I.
#       The General tab of Inspector shows the internal "Orientation" 
#       value of the current image.
#       If not "1 (Normal)", the user should rotate the image manually 
#       via Cmd-R, even if it visually appears to be properly oriented.
#       Then rotate back via Cmd-L until it visually appears to be 
#       properly oriented.
#       Those 2 manual steps strip out the "Orientation" value embedded 
#       in the image, or at least set it to "1 (Normal)".
#       The change to the "Orientation" value may NOT be immediately 
#       apparent in Inspector, which may continue to shows the original 
#       "Orientation" value that the image had when opened by Inspector 
#       (a bug in Preview, I think).
#       But closing and re-opening Preview and Inspector would reveal
#       that the "Orientation" value of the image HAS changed to
#       "1 (Normal)".
#       Once this has been done, Preview and all browsers will display
#       the image as it now appears.  Otherwise, before they display
#       the image, Preview and some (but not all) browsers will rotate 
#       it to the orientation specified by the "Orientation" value.
# -W = Wait till editor exits before proceeding.
# -n = New instance of the editor, even if one is already open
(set echo; open -W -n $*:q)