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############################################################################
#
# File: iview.icn
#
# Subject: Program to display image files
#
# Author: Ralph E. Griswold
#
# Date: January 22, 1995
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program is modeled after the Unix xview(1) utility. It takes
# a list of image files on the command line and displays them in
# order. The character "n" typed when the mouse cursor is in the
# image window goes to the next image. The character "q" terminates
# the display.
#
# This program can, of course, only display image types that Icon
# understands.
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: wopen
#
############################################################################
link wopen
procedure main(args)
local name, posx, posy
posx := posy := 20
every name := !args do {
WOpen("image=" || name, "posx=" || posx, "posy=" || posy) | {
write(&errout, "*** cannot open image: ", name)
next
}
repeat {
case Event() of {
"n": {
posx := WAttrib("posx")
posy := WAttrib("posy")
WClose()
break
}
"q": exit()
}
}
}
end
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