It has been a while since I asked anything here. Most of the scripting I
do is in PostScript using the ghostscript interpreter.
Occasionally I convert my postscript code to Objective C/Quartz. This
works really well for graphical output as Quarts drawing is just
postscript backward.
I now have an objective C application that is built on the Arduino
Serial Example code that was on the Arduino website. This uses IOKit to
open a serial port. I modified this code to create some button
functions. That send text command strings to the Arduino. The Arduino
returns data which gets placed into a NSTextView object. I want to
parse and format this returned data (which can contain abstract binary
data.)
I have code in postscript which can take the captured data and display
it by using ANSI Escape codes in terminal.
I was surprised that there seems to be no wrapper class to NSTextView to
do simple character cursor positioning equivalent to the Unix nCurses
library.
I spent the morning using a popular search engine with variations of the
following search terms. (note all the exclusions to avoid phone related
hits.)
'"objective c" NStextview write text at row column position like ncurses
move -ios -iphone -NSTableView -UITableView -UITextView'
The best I could find was a full blown terminal editor program called
iTerm2 I am looking for something much simpler along the lines of
textmoveto(3,4)
displaytext(Hello World)
Most of the example form editors seem to be based on NSTableView which I
find overly complex. The cursor positioning search hits relate to mouse
pointers.
There are a number of command line examples that should run in
terminal. This makes it awkward as the drop down menu is needed given
that Ardino serial devices show up in the /dev folder with unique
serialize names. It is also convenient to have the user buttons that
can send the command shortcuts to the Arduino.
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