source: general/graphlib/graphite2.xml@ ab4fdfc

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY graphite2-download-http
           "https://github.com/silnrsi/graphite/releases/download/&graphite2-version;/graphite2-&graphite2-version;.tgz">
  <!ENTITY graphite2-download-ftp  " ">
  <!ENTITY graphite2-md5sum        "1bccb985a7da01092bfb53bb5041e836">
  <!ENTITY graphite2-size          "6.3 MB">
  <!ENTITY graphite2-buildsize     "30 MB (with tests)">
  <!ENTITY graphite2-time          "0.2 SBU (with tests)">
]>

<sect1 id="graphite2" xreflabel="Graphite2-&graphite2-version;">
  <?dbhtml filename="graphite2.html"?>


  <title>Graphite2-&graphite2-version;</title>

  <indexterm zone="graphite2">
    <primary sortas="a-Graphite2">Graphite2</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to Graphite2</title>

    <para>
      <application>Graphite2</application> is a rendering engine for graphite
      fonts. These are TrueType fonts with additional tables containing smart
      rendering information and were originally developed to support complex
      non-Roman writing systems.  They may contain rules for e.g. ligatures,
      glyph substitution, kerning, justification - this can make them useful
      even on text written in Roman writing systems such as English.  Note that
      <application>firefox</application> by default provides an internal copy of
      the graphite engine and cannot use a system version (although it can now
      be patched to use it), but it too should benefit from the availability of
      graphite fonts.
    </para>

    &lfs120_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&graphite2-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&graphite2-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &graphite2-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &graphite2-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &graphite2-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &graphite2-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Graphite2 Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="cmake"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="freetype2"/>,
      <ulink url="https://sourceforge.net/projects/silgraphite/files/silgraphite/2.3.1/">silgraphite</ulink>
      to build the <command>comparerender</command> test and benchmarking tool,
      and if that is present, and
      <xref linkend="harfbuzz"/> to add more functionality to it (this is a
      circular dependency, you would need to first build
      <application>graphite2</application> without
      <application>harfbuzz</application>).
    </para>

    <para role="optional">
      To build the documentation:
      <xref linkend="asciidoc"/>,
      <xref linkend="doxygen"/>,
      <xref linkend="texlive"/> (or <xref linkend="tl-installer"/>), and
      <ulink url="https://dblatex.sourceforge.net/">
      dblatex</ulink>  (for PDF docs)
    </para>

    <para role="optional">
      To execute the test suite you will need
      <ulink url="https://pypi.python.org/pypi/FontTools">FontTools</ulink>
      (Python 3 module), otherwise, the "cmp" tests fail.
    </para>

    <bridgehead renderas="sect4">Optional (at runtime)</bridgehead>
    <para role="optional">
      You will need at least one suitable <ulink role="runtime"
      url="https://scripts.sil.org/cms/scripts/page.php?site_id=projects&amp;item_id=graphite_fonts">graphite font</ulink>
      for the package to be useful.
    </para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Graphite2</title>

    <para>
      Some tests fail if
      <ulink url="https://pypi.python.org/pypi/FontTools">FontTools</ulink>
      (Python 3 module) is not installed. These tests can be removed with:
    </para>

<screen><userinput>sed -i '/cmptest/d' tests/CMakeLists.txt</userinput></screen>

    <para>
      Install <application>Graphite2</application> by running the following
      commands:
    </para>

<screen><userinput>mkdir build &amp;&amp;
cd    build &amp;&amp;

cmake -DCMAKE_INSTALL_PREFIX=/usr .. &amp;&amp;
make</userinput></screen>

    <para>
      If you wish to build the documentation, issue:
    </para>

<screen remap="doc"><userinput>make docs</userinput></screen>

    <!-- https://github.com/silnrsi/graphite/pull/74 -->
    <para>
      To test the results, issue: <command>make test</command>.
      One test named <filename>nametabletest</filename> is known to fail.
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install</userinput></screen>

    <para>
      If you built the documentation, install, as the
      <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"
        remap="doc"><userinput>install -v -d -m755 /usr/share/doc/graphite2-&graphite2-version; &amp;&amp;
<!-- doc/doxygen seems to have gone, so I removed the api dir, but now both html
and pdf for the GTF and the manual
cp      -v -r -f    doc/doxygen/{html,latex/refman.pdf} \
                    /usr/share/doc/graphite2-&graphite2-version;/api &amp;&amp;-->
cp      -v -f    doc/{GTF,manual}.html \
                    /usr/share/doc/graphite2-&graphite2-version; &amp;&amp;
cp      -v -f    doc/{GTF,manual}.pdf \
                    /usr/share/doc/graphite2-&graphite2-version;</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para>
      <option>-DCMAKE_VERBOSE_MAKEFILE=ON</option>: This switch turns on
      build verbose mode.
    </para>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>
          gr2fonttest, and optionally comparerender
        </seg>
        <seg>
          libgraphite2.so
        </seg>
        <seg>
          /usr/{include,share}/graphite2 and optionally
          /usr/share/doc/graphite2-&graphite2-version;
        </seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="comparerender">
        <term><command>comparerender</command></term>
        <listitem>
          <para>
            is a test and benchmarking tool
          </para>
          <indexterm zone="graphite2 comparerender">
            <primary sortas="b-comparerender">comparerender</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gr2fonttest">
        <term><command>gr2fonttest</command></term>
        <listitem>
          <para>
            is a diagnostic console tool for graphite fonts
          </para>
          <indexterm zone="graphite2 gr2fonttest">
            <primary sortas="b-gr2fonttest">gr2fonttest</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libgraphite2">
        <term><filename class="libraryfile">libgraphite2.so</filename></term>
        <listitem>
          <para>
            is a rendering engine for graphite fonts
          </para>
          <indexterm zone="graphite2 libgraphite2">
            <primary sortas="c-libgraphite2">libgraphite2.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>