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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">

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<title>A Tutorial on Writing Defoma Configuration Script - Using x-postscript Category.</title>

<link href="index.html" rel="start">
<link href="ch6.html" rel="prev">
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<link href="index.html#contents" rel="contents">
<link href="index.html#copyright" rel="copyright">
<link href="ch1.html" rel="chapter" title="1 Introduction">
<link href="ch2.html" rel="chapter" title="2 Simple Defoma-configuration script.">
<link href="ch3.html" rel="chapter" title="3 Using hints.">
<link href="ch4.html" rel="chapter" title="4 Using Defoma::Id module.">
<link href="ch5.html" rel="chapter" title="5 Using Defoma::Id (2)">
<link href="ch6.html" rel="chapter" title="6 Using Defoma::Subst module.">
<link href="ch7.html" rel="chapter" title="7 Using x-postscript Category.">

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<body>

<p><a name="ch7"></a></p>
<hr>

<p>
[ <a href="ch6.html">previous</a> ]
[ <a href="index.html#contents">Contents</a> ]
[ <a href="ch1.html">1</a> ]
[ <a href="ch2.html">2</a> ]
[ <a href="ch3.html">3</a> ]
[ <a href="ch4.html">4</a> ]
[ <a href="ch5.html">5</a> ]
[ <a href="ch6.html">6</a> ]
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[ <a href="index.html">next</a> ]
</p>

<hr>

<h1>
A Tutorial on Writing Defoma Configuration Script
<br>Chapter 7 - Using x-postscript Category.
</h1>

<hr>

<p>
Many X applications that output a PostScript file and substitute X fonts for
PostScript fonts for displaying want a list of PostScript fonts and substitute
X fonts.  x-postscript category will satisfy this demand.  A font in this
category is a name of PostScript font with `&lt;X&gt;/' prefix added, like
<samp>&lt;X&gt;/Times-Roman</samp>, and each font has a XLFD as a hint.  The
XLFD is considered to have the most similar appearance to the PostScript font.
If the script wants to make use of x-postscript category, its package must
`Depends:' on psfontmgr.
</p>

<p>
The strategy of the Defoma-configuration script which accepts only x-postscript
category is to ignore all commands except term, and generate a configuration
file in term commands.  To obtain available PostScript fonts and their
substitutive XLFDs, the script calls <samp>defoma_font_get_fonts()</samp>
function, which returns a list of fonts registered in the specified category,
and <samp>defoma_font_get_hints()</samp> function, which returns hints of the
specified font.  All and only available (installed) x-postscript category fonts
are obtained through these functions.
</p>

<p>
Following is an example of the header of the script.  Note that there's
declaration of using Defoma::Font module for
<samp>defoma_font_get_fonts()</samp> and <samp>defoma_font_get_hints()</samp>
functions.
</p>

<pre>
     	  @ACCEPT_CATEGORIES = ('x-postscript');
     
     	  package example;
     	  use Debian::Defoma::Font;
     	  import Debian::Defoma::Font;
</pre>

<p>
The main routine goes like this:
</p>

<pre>
     	  sub x_postscript {
     	    my $com = shift;
     	    return 0 if ($com ne 'term');
     
     	    open(F, '&gt;/var/lib/defoma/example.d/font.conf');
     	    my @fonts = defoma_font_get_fonts('x-postscript');
     
     	    foreach my $psfont (@fonts) {
     	      my @hints = defoma_font_get_hints('x-postscript', $psfont);
     	      $psfont =~ s/^\&lt;X\&lt;\///;
     	      my $xfont = $hints[0];
     
     	      print F &quot;$psfont $xfont\n&quot;;
     	    }
     	    close F;
     	  }
</pre>

<p>
This simple codes will generate a list of PostScript fonts and XLFDs like
following.
</p>

<pre>
     	  Helvetica -adobe-helvetica-medium-r-normal--0-0-0-0-p-0-iso8859-1
     	  Helvetica-Bold -adobe-helvetica-bold-r-normal--0-0-0-0-p-0-iso8859-1
     	  Ryumin-Light-H -misc-mincho-medium-r-normal--0-0-0-0-c-0-jisx0208.1983-0
</pre>

<hr>

<p>
[ <a href="ch6.html">previous</a> ]
[ <a href="index.html#contents">Contents</a> ]
[ <a href="ch1.html">1</a> ]
[ <a href="ch2.html">2</a> ]
[ <a href="ch3.html">3</a> ]
[ <a href="ch4.html">4</a> ]
[ <a href="ch5.html">5</a> ]
[ <a href="ch6.html">6</a> ]
[ 7 ]
[ <a href="index.html">next</a> ]
</p>

<hr>

<p>
A Tutorial on Writing Defoma Configuration Script
</p>

<address>
Yasuhiro Take<br>
<br>
</address>
<hr>

</body>

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