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Re: Java claims WORA

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In article <u5vdu75uinlmblggdlue7vlbjq64flga8a@4ax.com>,
 Roedy Green <see_website@mindprod.com.invalid> wrote:

> On Fri, 22 Jun 2012 15:59:43 -0400, "John B. Matthews"
> <nospam@nospam.invalid> wrote, quoted or indirectly quoted someone who
> said :
> 
> >I'll second the need for testing, but I've found that using layouts 
> >properly and respecting a component's preferred size greatly reduces 
> >the number of cross-platform problems. There's a recent example 
> >here:
> 
> one of the big problems is when you substitute a font, the characters 
> are not the same size.  I would like to normalize fonts to their true 
> size so that when you substitute fonts, the actual real estate 
> consumed varies only a little.

I must demur: a typical JComponent, such as JLabel, goes to considerable 
lengths to calculate its preferred size using the metrics of the 
selected Font. As long as you

- don't veto the calculation,
- don't preclude resizing,
- do use a LayoutManager, and
- do pack() the enclosing Container

the chosen Font is irrelevant. If the Font must be changed dynamically, 
revalidate() and repaint() should suffice.

> Another would be a guaranteed to render all glyphs, even if it means 
> substituting from some other font.  Failing that at telling the 
> truth. Java claims to render a glyph when all it does in render some 
> generic glyph.

Font substitution shouldn't cause a problem. Missing glyphs and 
mendacious canDisplay() are annoying, but the metrics are typically 
reliable.

-- 
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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Java claims WORA owais <awais4you@gmail.com> - 2012-06-20 08:33 -0700
  Re: Java claims WORA Robert Klemme <shortcutter@googlemail.com> - 2012-06-20 09:21 -0700
  Re: Java claims WORA Gene Wirchenko <genew@ocis.net> - 2012-06-20 09:46 -0700
  Re: Java claims WORA Lew <lewbloch@gmail.com> - 2012-06-20 10:47 -0700
    Re: Java claims WORA "Mike Schilling" <mscottschilling@hotmail.com> - 2012-06-24 16:56 -0700
  Re: Java claims WORA Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 17:02 -0400
    Re: Java claims WORA glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-06-20 21:45 +0000
      Re: Java claims WORA Martin Gregorie <martin@address-in-sig.invalid> - 2012-06-20 22:25 +0000
        Re: Java claims WORA Robert Klemme <shortcutter@googlemail.com> - 2012-06-21 00:57 +0200
          Re: Java claims WORA Roedy Green <see_website@mindprod.com.invalid> - 2012-06-20 16:46 -0700
            Re: Java claims WORA David Lamb <dalamb@cs.queensu.ca> - 2012-06-20 19:56 -0400
      Re: Java claims WORA Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 19:16 -0400
        Re: Java claims WORA "Mike Schilling" <mscottschilling@hotmail.com> - 2012-06-24 16:58 -0700
  Re: Java claims WORA Roedy Green <see_website@mindprod.com.invalid> - 2012-06-20 16:43 -0700
    Re: Java claims WORA Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 20:30 -0400
    Re: Java claims WORA Roedy Green <see_website@mindprod.com.invalid> - 2012-06-20 18:37 -0700
      Re: Java claims WORA Arne Vajhøj <arne@vajhoej.dk> - 2012-06-20 21:47 -0400
  Re: Java claims WORA Thomas Richter <thor@math.tu-berlin.de> - 2012-06-22 19:18 +0200
    Re: Java claims WORA "John B. Matthews" <nospam@nospam.invalid> - 2012-06-22 15:59 -0400
      Re: Java claims WORA Roedy Green <see_website@mindprod.com.invalid> - 2012-06-24 04:43 -0700
        Re: Java claims WORA "John B. Matthews" <nospam@nospam.invalid> - 2012-06-24 18:51 -0400
          Re: Java claims WORA Lew <noone@lewscanon.com> - 2012-06-24 23:27 -0700
            Re: Java claims WORA "John B. Matthews" <nospam@nospam.invalid> - 2012-06-26 15:43 -0400
    Re: Java claims WORA Jim Janney <jjanney@shell.xmission.com> - 2012-06-22 18:23 -0600
  Re: Java claims WORA Jan Burse <janburse@fastmail.fm> - 2012-06-22 21:40 +0200
    Re: Java claims WORA David Lamb <dalamb@cs.queensu.ca> - 2012-06-25 09:57 -0400
      Re: Java claims WORA Jan Burse <janburse@fastmail.fm> - 2012-06-25 20:34 +0200
        Re: Java claims WORA Jan Burse <janburse@fastmail.fm> - 2012-06-25 20:44 +0200

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