Scan from right too. Not sure this is actually helpful, so committing separately.
on run (volumeName)
tell application "Finder"
tell disk (volumeName as string)
open
set theXOrigin to WINX
set theYOrigin to WINY
set theWidth to WINW
set theHeight to WINH
set theBottomRightX to (theXOrigin + theWidth)
set theBottomRightY to (theYOrigin + theHeight)
set dsStore to "\"" & "/Volumes/" & volumeName & "/" & ".DS_STORE\""
tell container window
set current view to icon view
set toolbar visible to false
set statusbar visible to false
set the bounds to {theXOrigin, theYOrigin, theBottomRightX, theBottomRightY}
set statusbar visible to false
end tell
set opts to the icon view options of container window
tell opts
set icon size to ICON_SIZE
set arrangement to not arranged
end tell
BACKGROUND_CLAUSE
-- Positioning
POSITION_CLAUSE
-- Hiding
HIDING_CLAUSE
-- Application Link Clause
APPLICATION_CLAUSE
close
open
update without registering applications
-- Force saving of the size
delay 1
tell container window
set statusbar visible to false
set the bounds to {theXOrigin, theYOrigin, theBottomRightX - 10, theBottomRightY - 10}
end tell
update without registering applications
end tell
delay 1
tell disk (volumeName as string)
tell container window
set statusbar visible to false
set the bounds to {theXOrigin, theYOrigin, theBottomRightX, theBottomRightY}
end tell
update without registering applications
end tell
--give the finder some time to write the .DS_Store file
delay 3
set waitTime to 0
set ejectMe to false
repeat while ejectMe is false
delay 1
set waitTime to waitTime + 1
if (do shell script "[ -f " & dsStore & " ]; echo $?") = "0" then set ejectMe to true
end repeat
log "waited " & waitTime & " seconds for .DS_STORE to be created."
end tell
end run