🚀 go-pugleaf

James:

There is no "Monospaced" font. What "Monospaced" means is 'use the font mapped
to this tag'.  You have no guarantee of it being the same from system to system
*at all*.  Heck, you have no guarantee that the font mapped to Monospaced is
even Monospaced or that the pt. size you are assuming is available and not
remapped on the client.

For your measurement test to be valid you'd have to compare MMMMM to the series
of Unicode escapes that map to the M character.  The concept of 'em' is ASCII
only (it's based on typography conventions that are about a hundred years older
than Java) and you can't expect it to apply to characters shoved into the high
registers of the font to fulfill unicode desires.

Tor's original suggestion of installing a font that meets your expectations
really is your best bet.  Find a font (or create one) that meets your ASCII and
Unicode needs and map it to "Monospaced".

I've been tracking your project via your posts.  You are fighting UI/UE design
and structure and Java implementations every step of the way.  You should be
able to easily limit your JTextField to the entry of 50 characters.  Forcing the
preferred size to do it for the current definition of monospaced for the set of
characters you want to allow input for...  Extend JTextField and start writing a
bunch of code to determine at runtime what that preferred size should be today.
Then, never use that extended component in a smart or helpful layout manager
like GBL or a dumb one like Border or Grid or Flow.

-Rich

"James A. Schulz" wrote:

> Tor,
>
> In fact this just isn't true.  Try drawing the following strings (one below
> the other) using the "Monospaced" font:
>
> 1.       "MMMMM"
>
> 2.       \u2228 + \u2228 + \u2228 + \u2228 +\u2228
>
> and you will see that these strings, which have the same character length,
> do not draw out to the same length on the screen.
>
> What I need is some guidance about creating a descendent of jTextField which
> will enforce a truly uniform value for characterWidth + paddihg.  If you can
> help, I would be grateful.
>
> James
>
> "Tor Iver Wilhelmsen" <tor.wilhelmsen@sds.no> wrote in message
> news:uofyw444r.fsf@sds.no...
> > "James A. Schulz" <jaschulz@wiseware.com> writes:
> >
> > > I am assuming that "M" is the same width as all the other characters in
> the
> > > "Monospaced" font, otherwise what does "Monospaced" mean?
> >
> > That all characters occupy the same area - but this means the
> > character width _plus padding_ is constant. And the em value is based
> > on use of [a-zA-Z] plus possibly the special characters: Unicode may
> > have several characters that the "em" standard doesn't take into
> > account.