gtk2/docs/reference/gtk/gtk4-update-icon-cache.xml
2020-08-21 15:33:12 +02:00

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<?xml version="1.0"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
]>
<refentry id="gtk4-update-icon-cache">
<refentryinfo>
<title>gtk4-update-icon-cache</title>
<productname>GTK</productname>
<authorgroup>
<author>
<contrib>Developer</contrib>
<firstname>Matthias</firstname>
<surname>Clasen</surname>
</author>
</authorgroup>
</refentryinfo>
<refmeta>
<refentrytitle>gtk4-update-icon-cache</refentrytitle>
<manvolnum>1</manvolnum>
<refmiscinfo class="manual">User Commands</refmiscinfo>
</refmeta>
<refnamediv>
<refname>gtk4-update-icon-cache</refname>
<refpurpose>Icon theme caching utility</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>gtk4-update-icon-cache</command>
<arg choice="opt">--force</arg>
<arg choice="opt">--ignore-theme-index</arg>
<group>
<arg choice="plain">--index-only</arg>
<arg choice="plain">--include-image-data</arg>
</group>
<arg choice="opt">--source <arg choice="plain"><replaceable>NAME</replaceable></arg></arg>
<arg choice="opt">--quiet</arg>
<arg choice="opt">--validate</arg>
<arg choice="plain"><replaceable>PATH</replaceable></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1><title>Description</title>
<para>
<command>gtk4-update-icon-cache</command> creates mmapable cache
files for icon themes.
</para>
<para>
It expects to be given the <replaceable>PATH</replaceable> to an icon theme
directory containing an <filename>index.theme</filename>, e.g.
<filename>/usr/share/icons/hicolor</filename>, and writes a
<filename>icon-theme.cache</filename> containing cached information about
the icons in the directory tree below the given directory.
</para>
<para>
GTK can use the cache files created by <command>gtk4-update-icon-cache</command>
to avoid a lot of system call and disk seek overhead when the application
starts. Since the format of the cache files allows them to be shared across
multiple processes, for instance using the POSIX <command>mmap()</command> system
call, the overall memory consumption is reduced as well.
</para>
</refsect1>
<refsect1><title>Options</title>
<variablelist>
<varlistentry>
<term>--force</term>
<term>-f</term>
<listitem><para>Overwrite an existing cache file even if it appears to be
up-to-date.</para></listitem>
</varlistentry>
<varlistentry>
<term>--ignore-theme-index</term>
<term>-t</term>
<listitem><para>Don't check for the existence of <filename>index.theme</filename>
in the icon theme directory. Without this option, <command>gtk4-update-icon-cache</command>
refuses to create an icon cache in a directory which does not appear to
be the toplevel directory of an icon theme.
</para></listitem>
</varlistentry>
<varlistentry>
<term>--index-only</term>
<term>-i</term>
<listitem><para>Don't include image data in the cache.
</para></listitem>
</varlistentry>
<varlistentry>
<term>--include-image-data</term>
<listitem><para>Include image data in the cache.
</para></listitem>
</varlistentry>
<varlistentry>
<term>--source</term>
<term>-c</term>
<listitem><para>Output a C header file declaring a constant
<replaceable>NAME</replaceable> with the contents of the icon
cache.</para></listitem>
</varlistentry>
<varlistentry>
<term>--quiet</term>
<term>-q</term>
<listitem><para>Turn off verbose output.
</para></listitem>
</varlistentry>
<varlistentry>
<term>--validate</term>
<term>-v</term>
<listitem><para>Validate existing icon cache.
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>