source: x/lib/gtk4.xml@ 3bdc4eb

<?xml version="1.0" encoding="ISO-8859-1"?>
<!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 gtk4-download-http "&gnome-download-http;/gtk/&gtk4-minor;/gtk-&gtk4-version;.tar.xz">
  <!ENTITY gtk4-download-ftp  "&gnome-download-ftp;/gtk/&gtk4-minor;/gtk-&gtk4-version;.tar.xz">
  <!ENTITY gtk4-md5sum        "d735b9c2a534f034553e2e27bc5af994">
  <!ENTITY gtk4-size          "19 MB">
  <!ENTITY gtk4-buildsize     "484 MB (add 12 MB for tests)">
  <!ENTITY gtk4-time          "1.1 SBU (using parallelism=4, add 0.3 SBU for tests)">
]>

<sect1 id="gtk4" xreflabel="GTK-&gtk4-version;">
  <?dbhtml filename="gtk4.html"?>


  <title>GTK-&gtk4-version;</title>

  <indexterm zone="gtk4">
    <primary sortas="a-gtk4">GTK-4</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to GTK 4</title>

    <para>
      The <application>GTK 4</application> package contains libraries used for
      creating graphical user interfaces for applications.
    </para>

    &lfs112_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&gtk4-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&gtk4-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &gtk4-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &gtk4-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &gtk4-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &gtk4-time;
        </para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">GTK 4 Dependencies</bridgehead>

    <bridgehead renderas="sect4">Required</bridgehead>
    <para role="required">
      <xref linkend="fribidi"/>,
      <xref linkend="gdk-pixbuf"/>,
      <xref linkend="graphene"/>,
      <xref linkend="iso-codes"/>,
      <xref linkend="libepoxy"/>,
      <xref linkend="libxkbcommon"/>,
      <xref linkend="pango"/>,
      <xref linkend="pygobject3"/>, and
      <xref linkend="wayland-protocols"/>
    </para>

    <bridgehead renderas="sect4">Recommended</bridgehead>
    <para role="recommended">
      <xref linkend="adwaita-icon-theme"/> (default for some gtk4 settings keys),
      <xref linkend="gst10-plugins-bad"/>,
      <xref role='runtime' linkend="gst10-plugins-good"/> (runtime,
      built with <xref role='nodep' linkend='libvpx'/>),
      <xref linkend="hicolor-icon-theme"/> (needed for tests and for defaults), and
      <xref linkend="librsvg"/>
    </para>

    <bridgehead renderas="sect4">Recommended (Required if building GNOME)</bridgehead>
    <para role="recommended">
      <xref linkend="gobject-introspection"/>
    </para>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional">
      <xref linkend="colord"/>,
      <xref linkend="cups"/>,
      <xref linkend="ffmpeg"/> (built with
      <xref role='nodep' linkend='libvpx'/>),
      <xref linkend="gtk-doc"/>,
      <xref role="runtime" linkend="highlight"/>
        (runtime, only used by <command>gtk4-demo</command> for syntax
        highlighting of demo source code),
      <xref linkend="libcloudproviders"/>,
      <xref linkend="sassc"/>,
      <xref linkend="tracker3"/>,
      <ulink url="&gi-docgen-url;">gi-docgen</ulink>, and
      <!--<ulink url="https://gitlab.gnome.org/World/libcloudproviders">libcloudproviders</ulink>, and-->
      <ulink url="https://vulkan.lunarg.com/sdk/home">vulkan</ulink>
    </para>

    <para condition="html" role="usernotes">
      User Notes: <ulink url="&blfs-wiki;/gtk4"/>
    </para>
  </sect2>

  <sect2 role="installation">
    <title>Installation of GTK 4</title>

    <para>
      Install <application>GTK 4</application> by running the following
      commands:
    </para>

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

meson setup --prefix=/usr           \
            --buildtype=release     \
            -Dbroadway-backend=true \
            .. &amp;&amp;
ninja</userinput></screen>

    <para>
      To run the tests, issue: <command>meson test --setup x11</command>. If you
      are in a Wayland session, replace x11 with wayland. A few tests may fail.
    </para>
<!-- [pierre]: 4.6.0, wayland: 727 ok; 2 Expected Fail;  1 Fail; 1 Skipped
     [bdubbs]: 4.6.3, x11,     724 OK, 2 Expected Fail, 12 Fail. 1 Skipped
     [pierre]: 4.6.6, wayland, 738 OK, 2 Expected Fail,  1 Fail. 1 Skipped
     [pierre]: 4.6.7, wayland, 737 OK, 2 Expected Fail,  1 Fail. 1 Skipped. 1 Timeout
     [bdubbs]: 4.6.7, x11,     758 OK, 2 Expected Fail,  9 Fail. 1 Skipped. 1 Timeout
     [pierre]: 4.8.1, wayland, 765 OK, 2 Expected Fail,  2 Fail. 1 Skipped
     [bdubbs]: 4.8.2, x11,     753 OK, 2 Expected Fail, 14 Fail. 1 Skipped
     [pierre]: 4.8.3, wayland, 760 OK, 2 Expected Fail,  5 Fail. 3 Skipped-->

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

<screen role="root"><userinput>ninja install</userinput></screen>
  </sect2>

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

    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
      href="../../xincludes/meson-buildtype-release.xml"/>

    <para>
      <parameter>-Dbroadway-backend=true</parameter>: This switch enables the
      HTML5 GDK backend.
    </para>

    <para>
      <option>-Dcloudproviders=enabled</option>: Use this switch if you have
      <xref linkend="libcloudproviders" role="nodep"/> installed and wish to
      enable support for cloud providers in a file chooser window.
    </para>

    <para>
      <option>-Dsysprof=enabled</option>: Use this switch if you have
      <xref linkend="sysprof"/> installed and wish to enable tracing support for
      GTK4-based applications.
    </para>

    <para>
      <option>-Dtracker=enabled</option>: Use this switch if you have
      <xref linkend="tracker3"/> installed and wish to use search functionality
      when running a file chooser.
    </para>

    <para>
      <option>-Dcolord=enabled</option>: Use this switch if you have
      <xref linkend="colord"/> installed and wish to use colord with the CUPS
      printing backend.
    </para>

    <para>
      <option>-Dgtk_doc=true</option>: Use this switch if you have
      <ulink url="&gi-docgen-url;">gi-docgen</ulink>
      installed and wish to generate the API reference documentation.
    </para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring GTK 4</title>

    <sect3 id="gtk4-config">
      <title>Config Files</title>
      <para>
        <filename>~/.config/gtk-4.0/settings.ini</filename> and
        <filename>/usr/share/gtk-4.0/settings.ini</filename>
      </para>

      <indexterm zone="gtk4 gtk4-config">
        <primary sortas="e-AA.home-gtk4-settings.ini">~/.config/gtk-4.0/settings.ini</primary>
      </indexterm>

      <indexterm zone="gtk4 gtk4-config">
        <primary
        sortas="e-usr-share-path-settings.ini">/usr/share/gtk-4.0/settings.ini</primary>
      </indexterm>
    </sect3>

    <sect3><title>Configuration Information</title>

      <para>
        <application>GTK 4</application> themes change the way a
        <application>GTK 4</application> application looks. An icon theme can
        be used to change the icons that appear on the application's toolbar.
        If you have installed a <application>GTK 4</application> theme (e.g.
        the Adwaita theme built in <application>GTK 4</application>),
        an icon theme (such as <xref linkend="oxygen-icons5"/>) and/or a font
        (<xref linkend="dejavu-fonts"/>), you can set your preferences in
        <filename>~/.config/gtk-4.0/settings.ini</filename>, or the default
        system-wide configuration file (as the
        <systemitem class="username">root</systemitem> user), in
        <filename>/usr/share/gtk-4.0/settings.ini</filename>. For the local
        user, an example is:
      </para>

<screen><userinput>mkdir -pv ~/.config/gtk-4.0
cat &gt; ~/.config/gtk-4.0/settings.ini &lt;&lt; "EOF"
<literal>[Settings]
gtk-theme-name = <replaceable>Adwaita</replaceable>
gtk-icon-theme-name = <replaceable>oxygen</replaceable>
gtk-font-name = <replaceable>DejaVu Sans 12</replaceable>
gtk-cursor-theme-size = <replaceable>18</replaceable>
gtk-xft-antialias = <replaceable>1</replaceable>
gtk-xft-hinting = <replaceable>1</replaceable>
gtk-xft-hintstyle = <replaceable>hintslight</replaceable>
gtk-xft-rgba = <replaceable>rgb</replaceable>
gtk-cursor-theme-name = <replaceable>Adwaita</replaceable></literal>
EOF</userinput></screen>

       <para>
         There are many settings keys, some with default values. You can find
         them at <ulink
         url="https://developer.gnome.org/gtk4/stable/GtkSettings.html">Settings:
         GTK 4 Reference Manual</ulink>.
       </para>

    </sect3>
  </sect2>

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

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

      <seglistitem>
        <seg>
          gtk4-broadwayd,
          gtk4-builder-tool,
          gtk4-demo,
          gtk4-demo-application,
          gtk4-encode-symbolic-svg,
          gtk4-icon-browser,
          gtk4-launch,
          gtk4-node-editor,
          gtk4-print-editor,
          gtk4-query-settings,
          gtk4-update-icon-cache, and
          gtk4-widget-factory
        </seg>
        <seg>
          libgtk-4.so
        </seg>
        <seg>
          /usr/include/gtk-4.0,
          /usr/lib/gtk-4.0, and
          /usr/share/gtk-4.0
        </seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="gtk4-broadwayd">
        <term><command>gtk4-broadwayd</command></term>
        <listitem>
          <para>
            provides support for displaying GTK 4 applications in a web
            browser using HTML5 and web sockets
          </para>
          <indexterm zone="gtk4 gtk4-broadwayd">
            <primary sortas="b-gtk4-broadwayd">gtk4-broadwayd</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-builder-tool">
        <term><command>gtk4-builder-tool</command></term>
        <listitem>
          <para>
            performs various operations on GtkBuilder .ui files
          </para>
          <indexterm zone="gtk4 gtk4-builder-tool">
            <primary sortas="b-gtk4-builder-tool">gtk4-builder-tool</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-demo">
        <term><command>gtk4-demo</command></term>
        <listitem>
          <para>
            is a simple program that demonstrates some of the tasks that can be
            done with GTK 4
          </para>
          <indexterm zone="gtk4 gtk4-demo">
            <primary sortas="b-gtk4-demo">gtk4-demo</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-demo-application">
        <term><command>gtk4-demo-application</command></term>
        <listitem>
          <para>
            is a simple GTK 4 application which is useful for testing
          </para>
          <indexterm zone="gtk4 gtk4-demo-application">
            <primary sortas="b-gtk4-demo-application">gtk4-demo-application</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-encode-symbolic-svg">
        <term><command>gtk4-encode-symbolic-svg</command></term>
        <listitem>
          <para>
            converts symbolic SVG icons into special PNG files. GTK 4 can load
            and recolor these PNGs, just like original SVGs, but loading them
            is much faster
          </para>
          <indexterm zone="gtk4 gtk4-encode-symbolic-svg">
            <primary sortas="b-gtk4-encode-symbolic-svg">gtk4-encode-symbolic-svg</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-icon-browser">
        <term><command>gtk4-icon-browser</command></term>
        <listitem>
          <para>
            is a utility to explore the icons in the current icon theme. It
            shows icons in various sizes, their symbolic variants when
            available, as well as a description of the icon and its context
          </para>
          <indexterm zone="gtk4 gtk4-icon-browser">
            <primary sortas="b-gtk4-icon-browser">gtk4-icon-browser</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-launch">
        <term><command>gtk4-launch</command></term>
        <listitem>
          <para>
            launches an application using the given name. The name should match
            the application .desktop file name (as seen in
            <filename class="directory">/usr/share/applications</filename>),
            with or without the '.desktop' extension
          </para>
          <indexterm zone="gtk4 gtk-launch">
            <primary sortas="b-gtk4-launch">gtk4-launch</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-node-editor">
        <term><command>gtk4-node-editor</command></term>
        <listitem>
          <para>
            is a utility to show and edit render node files. Such render
            node files can be obtained e.g. from the GTK inspector
          </para>
          <indexterm zone="gtk4 gtk4-node-editor">
            <primary sortas="b-gtk4-node-editor">gtk4-node-editor</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-print-editor">
        <term><command>gtk4-print-editor</command></term>
        <listitem>
          <para>
            is a simple program to demonstrate printing using GTK 4
            applications
          </para>
          <indexterm zone="gtk4 gtk4-print-editor">
            <primary sortas="b-gtk4-print-editor">gtk4-print-editor</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-query-settings">
        <term><command>gtk4-query-settings</command></term>
        <listitem>
          <para>
            provides a complete listing of all settings related to GTK 4
          </para>
          <indexterm zone="gtk4 gtk4-query-settings">
            <primary sortas="b-gtk4-query-settings">gtk4-query-settings</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-update-icon-cache">
        <term><command>gtk4-update-icon-cache</command></term>
        <listitem>
          <para>
            is an icon theme caching utility that creates mmap()able cache
            files for icon themes
          </para>
          <indexterm zone="gtk4 gtk4-update-icon-cache">
            <primary sortas="b-gtk4-update-icon-cache">gtk4-update-icon-cache</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="gtk4-widget-factory">
        <term><command>gtk4-widget-factory</command></term>
        <listitem>
          <para>
            is a program to view GTK 4 themes and widgets
          </para>
          <indexterm zone="gtk4 gtk4-widget-factory">
            <primary sortas="b-gtk4-widget-factory">gtk4-widget-factory</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libgtk-4">
        <term><filename class="libraryfile">libgtk-4.so</filename></term>
        <listitem>
          <para>
            contains functions that provide an API to implement graphical user
            interfaces
          </para>
          <indexterm zone="gtk4 libgtk-4">
            <primary sortas="c-libgtk-4">libgtk-4.so</primary>
          </indexterm>
        </listitem>
      </varlistentry>
    </variablelist>
  </sect2>
</sect1>