switch to tinyobj and nanovg from assimp and cairo

1 files changed, 0 insertions, 626 deletions

diff --git a/libs/cairo-1.16.0/doc/public/xml/cairo-user-fonts.xml b/libs/cairo-1.16.0/doc/public/xml/cairo-user-fonts.xml
deleted file mode 100644
index 894fd7a..0000000
--- a/libs/cairo-1.16.0/doc/public/xml/cairo-user-fonts.xml
+++ /dev/null
@@ -1,626 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
-		"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
-<!ENTITY version SYSTEM "version.xml">
-]>
-<refentry id="cairo-User-Fonts">
-<refmeta>
-<refentrytitle role="top_of_page" id="cairo-User-Fonts.top_of_page">User Fonts</refentrytitle>
-<manvolnum>3</manvolnum>
-<refmiscinfo>CAIRO Library</refmiscinfo>
-</refmeta>
-<refnamediv>
-<refname>User Fonts</refname>
-<refpurpose>Font support with font data provided by the user</refpurpose>
-</refnamediv>
-
-<refsect1 id="cairo-User-Fonts.functions" role="functions_proto">
-<title role="functions_proto.title">Functions</title>
-<informaltable pgwide="1" frame="none">
-<tgroup cols="2">
-<colspec colname="functions_return" colwidth="150px"/>
-<colspec colname="functions_name"/>
-<tbody>
-<row><entry role="function_type"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-</entry><entry role="function_name"><phrase role="c_punctuation">(</phrase><link linkend="cairo-user-scaled-font-init-func-t">*cairo_user_scaled_font_init_func_t</link><phrase role="c_punctuation">)</phrase>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-</entry><entry role="function_name"><phrase role="c_punctuation">(</phrase><link linkend="cairo-user-scaled-font-render-glyph-func-t">*cairo_user_scaled_font_render_glyph_func_t</link><phrase role="c_punctuation">)</phrase>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-</entry><entry role="function_name"><phrase role="c_punctuation">(</phrase><link linkend="cairo-user-scaled-font-text-to-glyphs-func-t">*cairo_user_scaled_font_text_to_glyphs_func_t</link><phrase role="c_punctuation">)</phrase>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-</entry><entry role="function_name"><phrase role="c_punctuation">(</phrase><link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t">*cairo_user_scaled_font_unicode_to_glyph_func_t</link><phrase role="c_punctuation">)</phrase>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-font-face-t"><returnvalue>cairo_font_face_t</returnvalue></link>&#160;*
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-create">cairo_user_font_face_create</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="void"><returnvalue>void</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-set-init-func">cairo_user_font_face_set_init_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-user-scaled-font-init-func-t"><returnvalue>cairo_user_scaled_font_init_func_t</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-get-init-func">cairo_user_font_face_get_init_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="void"><returnvalue>void</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-set-render-glyph-func">cairo_user_font_face_set_render_glyph_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-user-scaled-font-render-glyph-func-t"><returnvalue>cairo_user_scaled_font_render_glyph_func_t</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-get-render-glyph-func">cairo_user_font_face_get_render_glyph_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="void"><returnvalue>void</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-set-unicode-to-glyph-func">cairo_user_font_face_set_unicode_to_glyph_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><returnvalue>cairo_user_scaled_font_unicode_to_glyph_func_t</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-get-unicode-to-glyph-func">cairo_user_font_face_get_unicode_to_glyph_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="void"><returnvalue>void</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-set-text-to-glyphs-func">cairo_user_font_face_set_text_to_glyphs_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-<row><entry role="function_type"><link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><returnvalue>cairo_user_scaled_font_text_to_glyphs_func_t</returnvalue></link>
-</entry><entry role="function_name"><link linkend="cairo-user-font-face-get-text-to-glyphs-func">cairo_user_font_face_get_text_to_glyphs_func</link>&#160;<phrase role="c_punctuation">()</phrase></entry></row>
-
-</tbody>
-</tgroup>
-</informaltable>
-</refsect1>
-<refsect1 id="cairo-User-Fonts.other" role="other_proto">
-<title role="other_proto.title">Types and Values</title>
-<informaltable role="enum_members_table" pgwide="1" frame="none">
-<tgroup cols="2">
-<colspec colname="name" colwidth="150px"/>
-<colspec colname="description"/>
-<tbody>
-<row><entry role="define_keyword">#define</entry><entry role="function_name"><link linkend="CAIRO-HAS-USER-FONT:CAPS">CAIRO_HAS_USER_FONT</link></entry></row>
-
-</tbody>
-</tgroup>
-</informaltable>
-</refsect1>
-
-
-<refsect1 id="cairo-User-Fonts.description" role="desc">
-<title role="desc.title">Description</title>
-<para>The user-font feature allows the cairo user to provide drawings for glyphs
-in a font.  This is most useful in implementing fonts in non-standard
-formats, like SVG fonts and Flash fonts, but can also be used by games and
-other application to draw "funky" fonts.</para>
-
-</refsect1>
-<refsect1 id="cairo-User-Fonts.functions_details" role="details">
-<title role="details.title">Functions</title>
-<refsect2 id="cairo-user-scaled-font-init-func-t" role="function" condition="since:1.8">
-<title>cairo_user_scaled_font_init_func_t&#160;()</title>
-<indexterm zone="cairo-user-scaled-font-init-func-t" role="1.8"><primary sortas="user_scaled_font_init_func_t">cairo_user_scaled_font_init_func_t</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-<phrase role="c_punctuation">(</phrase>*cairo_user_scaled_font_init_func_t<phrase role="c_punctuation">)</phrase> (<parameter><link linkend="cairo-scaled-font-t"><type>cairo_scaled_font_t</type></link> *scaled_font</parameter>,
-                                       <parameter><link linkend="cairo-t"><type>cairo_t</type></link> *cr</parameter>,
-                                       <parameter><link linkend="cairo-font-extents-t"><type>cairo_font_extents_t</type></link> *extents</parameter>);</programlisting>
-<para><link linkend="cairo-user-scaled-font-init-func-t"><type>cairo_user_scaled_font_init_func_t</type></link> is the type of function which is
-called when a scaled-font needs to be created for a user font-face.</para>
-<para>The cairo context <parameter>cr</parameter>
- is not used by the caller, but is prepared in font
-space, similar to what the cairo contexts passed to the render_glyph
-method will look like.  The callback can use this context for extents
-computation for example.  After the callback is called, <parameter>cr</parameter>
- is checked
-for any error status.</para>
-<para>The <parameter>extents</parameter>
- argument is where the user font sets the font extents for
-<parameter>scaled_font</parameter>
-.  It is in font space, which means that for most cases its
-ascent and descent members should add to 1.0.  <parameter>extents</parameter>
- is preset to
-hold a value of 1.0 for ascent, height, and max_x_advance, and 0.0 for
-descent and max_y_advance members.</para>
-<para>The callback is optional.  If not set, default font extents as described
-in the previous paragraph will be used.</para>
-<para>Note that <parameter>scaled_font</parameter>
- is not fully initialized at this
-point and trying to use it for text operations in the callback will result
-in deadlock.</para>
-<refsect3 id="cairo-user-scaled-font-init-func-t.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>scaled_font</para></entry>
-<entry role="parameter_description"><para>the scaled-font being created</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>cr</para></entry>
-<entry role="parameter_description"><para>a cairo context, in font space</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>extents</para></entry>
-<entry role="parameter_description"><para>font extents to fill in, in font space</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-scaled-font-init-func-t.returns" role="returns">
-<title>Returns</title>
-<para> <link linkend="CAIRO-STATUS-SUCCESS:CAPS"><literal>CAIRO_STATUS_SUCCESS</literal></link> upon success, or an error status on error.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-scaled-font-render-glyph-func-t" role="function" condition="since:1.8">
-<title>cairo_user_scaled_font_render_glyph_func_t&#160;()</title>
-<indexterm zone="cairo-user-scaled-font-render-glyph-func-t" role="1.8"><primary sortas="user_scaled_font_render_glyph_func_t">cairo_user_scaled_font_render_glyph_func_t</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-<phrase role="c_punctuation">(</phrase>*cairo_user_scaled_font_render_glyph_func_t<phrase role="c_punctuation">)</phrase>
-                               (<parameter><link linkend="cairo-scaled-font-t"><type>cairo_scaled_font_t</type></link> *scaled_font</parameter>,
-                                <parameter><type>unsigned long </type> glyph</parameter>,
-                                <parameter><link linkend="cairo-t"><type>cairo_t</type></link> *cr</parameter>,
-                                <parameter><link linkend="cairo-text-extents-t"><type>cairo_text_extents_t</type></link> *extents</parameter>);</programlisting>
-<para><link linkend="cairo-user-scaled-font-render-glyph-func-t"><type>cairo_user_scaled_font_render_glyph_func_t</type></link> is the type of function which
-is called when a user scaled-font needs to render a glyph.</para>
-<para>The callback is mandatory, and expected to draw the glyph with code <parameter>glyph</parameter>
- to
-the cairo context <parameter>cr</parameter>
-.  <parameter>cr</parameter>
- is prepared such that the glyph drawing is done in
-font space.  That is, the matrix set on <parameter>cr</parameter>
- is the scale matrix of <parameter>scaled_font</parameter>
-,
-The <parameter>extents</parameter>
- argument is where the user font sets the font extents for
-<parameter>scaled_font</parameter>
-.  However, if user prefers to draw in user space, they can
-achieve that by changing the matrix on <parameter>cr</parameter>
-.  All cairo rendering operations
-to <parameter>cr</parameter>
- are permitted, however, the result is undefined if any source other
-than the default source on <parameter>cr</parameter>
- is used.  That means, glyph bitmaps should
-be rendered using <link linkend="cairo-mask"><function>cairo_mask()</function></link> instead of <link linkend="cairo-paint"><function>cairo_paint()</function></link>.</para>
-<para>Other non-default settings on <parameter>cr</parameter>
- include a font size of 1.0 (given that
-it is set up to be in font space), and font options corresponding to
-<parameter>scaled_font</parameter>
-.</para>
-<para>The <parameter>extents</parameter>
- argument is preset to have <literal>x_bearing</literal>,
-<literal>width</literal>, and <literal>y_advance</literal> of zero,
-<literal>y_bearing</literal> set to <literal>-font_extents.ascent</literal>,
-<literal>height</literal> to <literal>font_extents.ascent+font_extents.descent</literal>,
-and <literal>x_advance</literal> to <literal>font_extents.max_x_advance</literal>.
-The only field user needs to set in majority of cases is
-<literal>x_advance</literal>.
-If the <literal>width</literal> field is zero upon the callback returning
-(which is its preset value), the glyph extents are automatically computed
-based on the drawings done to <parameter>cr</parameter>
-.  This is in most cases exactly what the
-desired behavior is.  However, if for any reason the callback sets the
-extents, it must be ink extents, and include the extents of all drawing
-done to <parameter>cr</parameter>
- in the callback.</para>
-<refsect3 id="cairo-user-scaled-font-render-glyph-func-t.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>scaled_font</para></entry>
-<entry role="parameter_description"><para>user scaled-font</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>glyph</para></entry>
-<entry role="parameter_description"><para>glyph code to render</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>cr</para></entry>
-<entry role="parameter_description"><para>cairo context to draw to, in font space</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>extents</para></entry>
-<entry role="parameter_description"><para>glyph extents to fill in, in font space</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-scaled-font-render-glyph-func-t.returns" role="returns">
-<title>Returns</title>
-<para> <link linkend="CAIRO-STATUS-SUCCESS:CAPS"><literal>CAIRO_STATUS_SUCCESS</literal></link> upon success, or
-<link linkend="CAIRO-STATUS-USER-FONT-ERROR:CAPS"><literal>CAIRO_STATUS_USER_FONT_ERROR</literal></link> or any other error status on error.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-scaled-font-text-to-glyphs-func-t" role="function" condition="since:1.8">
-<title>cairo_user_scaled_font_text_to_glyphs_func_t&#160;()</title>
-<indexterm zone="cairo-user-scaled-font-text-to-glyphs-func-t" role="1.8"><primary sortas="user_scaled_font_text_to_glyphs_func_t">cairo_user_scaled_font_text_to_glyphs_func_t</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-<phrase role="c_punctuation">(</phrase>*cairo_user_scaled_font_text_to_glyphs_func_t<phrase role="c_punctuation">)</phrase>
-                               (<parameter><link linkend="cairo-scaled-font-t"><type>cairo_scaled_font_t</type></link> *scaled_font</parameter>,
-                                <parameter>const <link linkend="char"><type>char</type></link> *utf8</parameter>,
-                                <parameter><link linkend="int"><type>int</type></link> utf8_len</parameter>,
-                                <parameter><link linkend="cairo-glyph-t"><type>cairo_glyph_t</type></link> **glyphs</parameter>,
-                                <parameter><link linkend="int"><type>int</type></link> *num_glyphs</parameter>,
-                                <parameter><link linkend="cairo-text-cluster-t"><type>cairo_text_cluster_t</type></link> **clusters</parameter>,
-                                <parameter><link linkend="int"><type>int</type></link> *num_clusters</parameter>,
-                                <parameter><link linkend="cairo-text-cluster-flags-t"><type>cairo_text_cluster_flags_t</type></link> *cluster_flags</parameter>);</programlisting>
-<para><link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><type>cairo_user_scaled_font_text_to_glyphs_func_t</type></link> is the type of function which
-is called to convert input text to an array of glyphs.  This is used by the
-<link linkend="cairo-show-text"><function>cairo_show_text()</function></link> operation.</para>
-<para>Using this callback the user-font has full control on glyphs and their
-positions.  That means, it allows for features like ligatures and kerning,
-as well as complex <firstterm>shaping</firstterm> required for scripts like
-Arabic and Indic.</para>
-<para>The <parameter>num_glyphs</parameter>
- argument is preset to the number of glyph entries available
-in the <parameter>glyphs</parameter>
- buffer. If the <parameter>glyphs</parameter>
- buffer is <link linkend="NULL:CAPS"><literal>NULL</literal></link>, the value of
-<parameter>num_glyphs</parameter>
- will be zero.  If the provided glyph array is too short for
-the conversion (or for convenience), a new glyph array may be allocated
-using <link linkend="cairo-glyph-allocate"><function>cairo_glyph_allocate()</function></link> and placed in <parameter>glyphs</parameter>
-.  Upon return,
-<parameter>num_glyphs</parameter>
- should contain the number of generated glyphs.  If the value
-<parameter>glyphs</parameter>
- points at has changed after the call, the caller will free the
-allocated glyph array using <link linkend="cairo-glyph-free"><function>cairo_glyph_free()</function></link>.  The caller will also free
-the original value of <parameter>glyphs</parameter>
-, so the callback shouldn't do so.
-The callback should populate the glyph indices and positions (in font space)
-assuming that the text is to be shown at the origin.</para>
-<para>If <parameter>clusters</parameter>
- is not <link linkend="NULL:CAPS"><literal>NULL</literal></link>, <parameter>num_clusters</parameter>
- and <parameter>cluster_flags</parameter>
- are also
-non-<link linkend="NULL:CAPS"><literal>NULL</literal></link>, and cluster mapping should be computed. The semantics of how
-cluster array allocation works is similar to the glyph array.  That is,
-if <parameter>clusters</parameter>
- initially points to a non-<link linkend="NULL:CAPS"><literal>NULL</literal></link> value, that array may be used
-as a cluster buffer, and <parameter>num_clusters</parameter>
- points to the number of cluster
-entries available there.  If the provided cluster array is too short for
-the conversion (or for convenience), a new cluster array may be allocated
-using <link linkend="cairo-text-cluster-allocate"><function>cairo_text_cluster_allocate()</function></link> and placed in <parameter>clusters</parameter>
-.  In this case,
-the original value of <parameter>clusters</parameter>
- will still be freed by the caller.  Upon
-return, <parameter>num_clusters</parameter>
- should contain the number of generated clusters.
-If the value <parameter>clusters</parameter>
- points at has changed after the call, the caller
-will free the allocated cluster array using <link linkend="cairo-text-cluster-free"><function>cairo_text_cluster_free()</function></link>.</para>
-<para>The callback is optional.  If <parameter>num_glyphs</parameter>
- is negative upon
-the callback returning or if the return value
-is <link linkend="CAIRO-STATUS-USER-FONT-NOT-IMPLEMENTED:CAPS"><literal>CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED</literal></link>, the unicode_to_glyph callback
-is tried.  See <link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><type>cairo_user_scaled_font_unicode_to_glyph_func_t</type></link>.</para>
-<para>Note: While cairo does not impose any limitation on glyph indices,
-some applications may assume that a glyph index fits in a 16-bit
-unsigned integer.  As such, it is advised that user-fonts keep their
-glyphs in the 0 to 65535 range.  Furthermore, some applications may
-assume that glyph 0 is a special glyph-not-found glyph.  User-fonts
-are advised to use glyph 0 for such purposes and do not use that
-glyph value for other purposes.</para>
-<refsect3 id="cairo-user-scaled-font-text-to-glyphs-func-t.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>scaled_font</para></entry>
-<entry role="parameter_description"><para>the scaled-font being created</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>utf8</para></entry>
-<entry role="parameter_description"><para>a string of text encoded in UTF-8</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>utf8_len</para></entry>
-<entry role="parameter_description"><para>length of <parameter>utf8</parameter>
-in bytes</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>glyphs</para></entry>
-<entry role="parameter_description"><para>pointer to array of glyphs to fill, in font space</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>num_glyphs</para></entry>
-<entry role="parameter_description"><para>pointer to number of glyphs</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>clusters</para></entry>
-<entry role="parameter_description"><para>pointer to array of cluster mapping information to fill, or <link linkend="NULL:CAPS"><literal>NULL</literal></link></para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>num_clusters</para></entry>
-<entry role="parameter_description"><para>pointer to number of clusters</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>cluster_flags</para></entry>
-<entry role="parameter_description"><para>pointer to location to store cluster flags corresponding to the
-output <parameter>clusters</parameter>
-</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-scaled-font-text-to-glyphs-func-t.returns" role="returns">
-<title>Returns</title>
-<para> <link linkend="CAIRO-STATUS-SUCCESS:CAPS"><literal>CAIRO_STATUS_SUCCESS</literal></link> upon success,
-<link linkend="CAIRO-STATUS-USER-FONT-NOT-IMPLEMENTED:CAPS"><literal>CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED</literal></link> if fallback options should be tried,
-or <link linkend="CAIRO-STATUS-USER-FONT-ERROR:CAPS"><literal>CAIRO_STATUS_USER_FONT_ERROR</literal></link> or any other error status on error.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-scaled-font-unicode-to-glyph-func-t" role="function" condition="since:1.8">
-<title>cairo_user_scaled_font_unicode_to_glyph_func_t&#160;()</title>
-<indexterm zone="cairo-user-scaled-font-unicode-to-glyph-func-t" role="1.8"><primary sortas="user_scaled_font_unicode_to_glyph_func_t">cairo_user_scaled_font_unicode_to_glyph_func_t</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-status-t"><returnvalue>cairo_status_t</returnvalue></link>
-<phrase role="c_punctuation">(</phrase>*cairo_user_scaled_font_unicode_to_glyph_func_t<phrase role="c_punctuation">)</phrase>
-                               (<parameter><link linkend="cairo-scaled-font-t"><type>cairo_scaled_font_t</type></link> *scaled_font</parameter>,
-                                <parameter><type>unsigned long </type> unicode</parameter>,
-                                <parameter>unsigned <link linkend="long"><type>long</type></link> *glyph_index</parameter>);</programlisting>
-<para><link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><type>cairo_user_scaled_font_unicode_to_glyph_func_t</type></link> is the type of function which
-is called to convert an input Unicode character to a single glyph.
-This is used by the <link linkend="cairo-show-text"><function>cairo_show_text()</function></link> operation.</para>
-<para>This callback is used to provide the same functionality as the
-text_to_glyphs callback does (see <link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><type>cairo_user_scaled_font_text_to_glyphs_func_t</type></link>)
-but has much less control on the output,
-in exchange for increased ease of use.  The inherent assumption to using
-this callback is that each character maps to one glyph, and that the
-mapping is context independent.  It also assumes that glyphs are positioned
-according to their advance width.  These mean no ligatures, kerning, or
-complex scripts can be implemented using this callback.</para>
-<para>The callback is optional, and only used if text_to_glyphs callback is not
-set or fails to return glyphs.  If this callback is not set or if it returns
-<link linkend="CAIRO-STATUS-USER-FONT-NOT-IMPLEMENTED:CAPS"><literal>CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED</literal></link>, an identity mapping from Unicode
-code-points to glyph indices is assumed.</para>
-<para>Note: While cairo does not impose any limitation on glyph indices,
-some applications may assume that a glyph index fits in a 16-bit
-unsigned integer.  As such, it is advised that user-fonts keep their
-glyphs in the 0 to 65535 range.  Furthermore, some applications may
-assume that glyph 0 is a special glyph-not-found glyph.  User-fonts
-are advised to use glyph 0 for such purposes and do not use that
-glyph value for other purposes.</para>
-<refsect3 id="cairo-user-scaled-font-unicode-to-glyph-func-t.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>scaled_font</para></entry>
-<entry role="parameter_description"><para>the scaled-font being created</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>unicode</para></entry>
-<entry role="parameter_description"><para>input unicode character code-point</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>glyph_index</para></entry>
-<entry role="parameter_description"><para>output glyph index</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-scaled-font-unicode-to-glyph-func-t.returns" role="returns">
-<title>Returns</title>
-<para> <link linkend="CAIRO-STATUS-SUCCESS:CAPS"><literal>CAIRO_STATUS_SUCCESS</literal></link> upon success,
-<link linkend="CAIRO-STATUS-USER-FONT-NOT-IMPLEMENTED:CAPS"><literal>CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED</literal></link> if fallback options should be tried,
-or <link linkend="CAIRO-STATUS-USER-FONT-ERROR:CAPS"><literal>CAIRO_STATUS_USER_FONT_ERROR</literal></link> or any other error status on error.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-create" role="function" condition="since:1.8">
-<title>cairo_user_font_face_create&#160;()</title>
-<indexterm zone="cairo-user-font-face-create" role="1.8"><primary sortas="user_font_face_create">cairo_user_font_face_create</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-font-face-t"><returnvalue>cairo_font_face_t</returnvalue></link>&#160;*
-cairo_user_font_face_create (<parameter><type>void</type></parameter>);</programlisting>
-<para>Creates a new user font-face.</para>
-<para>Use the setter functions to associate callbacks with the returned
-user font.  The only mandatory callback is render_glyph.</para>
-<para>After the font-face is created, the user can attach arbitrary data
-(the actual font data) to it using <link linkend="cairo-font-face-set-user-data"><function>cairo_font_face_set_user_data()</function></link>
-and access it from the user-font callbacks by using
-<link linkend="cairo-scaled-font-get-font-face"><function>cairo_scaled_font_get_font_face()</function></link> followed by
-<link linkend="cairo-font-face-get-user-data"><function>cairo_font_face_get_user_data()</function></link>.</para>
-<refsect3 id="cairo-user-font-face-create.returns" role="returns">
-<title>Returns</title>
-<para> a newly created <link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link>. Free with
-<link linkend="cairo-font-face-destroy"><function>cairo_font_face_destroy()</function></link> when you are done using it.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-set-init-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_set_init_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-set-init-func" role="1.8"><primary sortas="user_font_face_set_init_func">cairo_user_font_face_set_init_func</primary></indexterm>
-<programlisting language="C"><link linkend="void"><returnvalue>void</returnvalue></link>
-cairo_user_font_face_set_init_func (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>,
-                                    <parameter><link linkend="cairo-user-scaled-font-init-func-t"><type>cairo_user_scaled_font_init_func_t</type></link> init_func</parameter>);</programlisting>
-<para>Sets the scaled-font initialization function of a user-font.
-See <link linkend="cairo-user-scaled-font-init-func-t"><type>cairo_user_scaled_font_init_func_t</type></link> for details of how the callback
-works.</para>
-<para>The font-face should not be immutable or a <link linkend="CAIRO-STATUS-USER-FONT-IMMUTABLE:CAPS"><literal>CAIRO_STATUS_USER_FONT_IMMUTABLE</literal></link>
-error will occur.  A user font-face is immutable as soon as a scaled-font
-is created from it.</para>
-<refsect3 id="cairo-user-font-face-set-init-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>init_func</para></entry>
-<entry role="parameter_description"><para>The init callback, or <link linkend="NULL:CAPS"><literal>NULL</literal></link></para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-get-init-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_get_init_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-get-init-func" role="1.8"><primary sortas="user_font_face_get_init_func">cairo_user_font_face_get_init_func</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-user-scaled-font-init-func-t"><returnvalue>cairo_user_scaled_font_init_func_t</returnvalue></link>
-cairo_user_font_face_get_init_func (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>);</programlisting>
-<para>Gets the scaled-font initialization function of a user-font.</para>
-<refsect3 id="cairo-user-font-face-get-init-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-font-face-get-init-func.returns" role="returns">
-<title>Returns</title>
-<para> The init callback of <parameter>font_face</parameter>
-or <link linkend="NULL:CAPS"><literal>NULL</literal></link> if none set or an error has occurred.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-set-render-glyph-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_set_render_glyph_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-set-render-glyph-func" role="1.8"><primary sortas="user_font_face_set_render_glyph_func">cairo_user_font_face_set_render_glyph_func</primary></indexterm>
-<programlisting language="C"><link linkend="void"><returnvalue>void</returnvalue></link>
-cairo_user_font_face_set_render_glyph_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>,
-                                <parameter><link linkend="cairo-user-scaled-font-render-glyph-func-t"><type>cairo_user_scaled_font_render_glyph_func_t</type></link> render_glyph_func</parameter>);</programlisting>
-<para>Sets the glyph rendering function of a user-font.
-See <link linkend="cairo-user-scaled-font-render-glyph-func-t"><type>cairo_user_scaled_font_render_glyph_func_t</type></link> for details of how the callback
-works.</para>
-<para>The font-face should not be immutable or a <link linkend="CAIRO-STATUS-USER-FONT-IMMUTABLE:CAPS"><literal>CAIRO_STATUS_USER_FONT_IMMUTABLE</literal></link>
-error will occur.  A user font-face is immutable as soon as a scaled-font
-is created from it.</para>
-<para>The render_glyph callback is the only mandatory callback of a user-font.
-If the callback is <link linkend="NULL:CAPS"><literal>NULL</literal></link> and a glyph is tried to be rendered using
-<parameter>font_face</parameter>
-, a <link linkend="CAIRO-STATUS-USER-FONT-ERROR:CAPS"><literal>CAIRO_STATUS_USER_FONT_ERROR</literal></link> will occur.</para>
-<refsect3 id="cairo-user-font-face-set-render-glyph-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>render_glyph_func</para></entry>
-<entry role="parameter_description"><para>The render_glyph callback, or <link linkend="NULL:CAPS"><literal>NULL</literal></link></para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-get-render-glyph-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_get_render_glyph_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-get-render-glyph-func" role="1.8"><primary sortas="user_font_face_get_render_glyph_func">cairo_user_font_face_get_render_glyph_func</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-user-scaled-font-render-glyph-func-t"><returnvalue>cairo_user_scaled_font_render_glyph_func_t</returnvalue></link>
-cairo_user_font_face_get_render_glyph_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>);</programlisting>
-<para>Gets the glyph rendering function of a user-font.</para>
-<refsect3 id="cairo-user-font-face-get-render-glyph-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-font-face-get-render-glyph-func.returns" role="returns">
-<title>Returns</title>
-<para> The render_glyph callback of <parameter>font_face</parameter>
-or <link linkend="NULL:CAPS"><literal>NULL</literal></link> if none set or an error has occurred.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-set-unicode-to-glyph-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_set_unicode_to_glyph_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-set-unicode-to-glyph-func" role="1.8"><primary sortas="user_font_face_set_unicode_to_glyph_func">cairo_user_font_face_set_unicode_to_glyph_func</primary></indexterm>
-<programlisting language="C"><link linkend="void"><returnvalue>void</returnvalue></link>
-cairo_user_font_face_set_unicode_to_glyph_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>,
-                                <parameter><link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><type>cairo_user_scaled_font_unicode_to_glyph_func_t</type></link> unicode_to_glyph_func</parameter>);</programlisting>
-<para>Sets the unicode-to-glyph conversion function of a user-font.
-See <link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><type>cairo_user_scaled_font_unicode_to_glyph_func_t</type></link> for details of how the callback
-works.</para>
-<para>The font-face should not be immutable or a <link linkend="CAIRO-STATUS-USER-FONT-IMMUTABLE:CAPS"><literal>CAIRO_STATUS_USER_FONT_IMMUTABLE</literal></link>
-error will occur.  A user font-face is immutable as soon as a scaled-font
-is created from it.</para>
-<refsect3 id="cairo-user-font-face-set-unicode-to-glyph-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>unicode_to_glyph_func</para></entry>
-<entry role="parameter_description"><para>The unicode_to_glyph callback, or <link linkend="NULL:CAPS"><literal>NULL</literal></link></para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-get-unicode-to-glyph-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_get_unicode_to_glyph_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-get-unicode-to-glyph-func" role="1.8"><primary sortas="user_font_face_get_unicode_to_glyph_func">cairo_user_font_face_get_unicode_to_glyph_func</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-user-scaled-font-unicode-to-glyph-func-t"><returnvalue>cairo_user_scaled_font_unicode_to_glyph_func_t</returnvalue></link>
-cairo_user_font_face_get_unicode_to_glyph_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>);</programlisting>
-<para>Gets the unicode-to-glyph conversion function of a user-font.</para>
-<refsect3 id="cairo-user-font-face-get-unicode-to-glyph-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-font-face-get-unicode-to-glyph-func.returns" role="returns">
-<title>Returns</title>
-<para> The unicode_to_glyph callback of <parameter>font_face</parameter>
-or <link linkend="NULL:CAPS"><literal>NULL</literal></link> if none set or an error occurred.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-set-text-to-glyphs-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_set_text_to_glyphs_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-set-text-to-glyphs-func" role="1.8"><primary sortas="user_font_face_set_text_to_glyphs_func">cairo_user_font_face_set_text_to_glyphs_func</primary></indexterm>
-<programlisting language="C"><link linkend="void"><returnvalue>void</returnvalue></link>
-cairo_user_font_face_set_text_to_glyphs_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>,
-                                <parameter><link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><type>cairo_user_scaled_font_text_to_glyphs_func_t</type></link> text_to_glyphs_func</parameter>);</programlisting>
-<para>Sets th text-to-glyphs conversion function of a user-font.
-See <link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><type>cairo_user_scaled_font_text_to_glyphs_func_t</type></link> for details of how the callback
-works.</para>
-<para>The font-face should not be immutable or a <link linkend="CAIRO-STATUS-USER-FONT-IMMUTABLE:CAPS"><literal>CAIRO_STATUS_USER_FONT_IMMUTABLE</literal></link>
-error will occur.  A user font-face is immutable as soon as a scaled-font
-is created from it.</para>
-<refsect3 id="cairo-user-font-face-set-text-to-glyphs-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-<row><entry role="parameter_name"><para>text_to_glyphs_func</para></entry>
-<entry role="parameter_description"><para>The text_to_glyphs callback, or <link linkend="NULL:CAPS"><literal>NULL</literal></link></para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-<refsect2 id="cairo-user-font-face-get-text-to-glyphs-func" role="function" condition="since:1.8">
-<title>cairo_user_font_face_get_text_to_glyphs_func&#160;()</title>
-<indexterm zone="cairo-user-font-face-get-text-to-glyphs-func" role="1.8"><primary sortas="user_font_face_get_text_to_glyphs_func">cairo_user_font_face_get_text_to_glyphs_func</primary></indexterm>
-<programlisting language="C"><link linkend="cairo-user-scaled-font-text-to-glyphs-func-t"><returnvalue>cairo_user_scaled_font_text_to_glyphs_func_t</returnvalue></link>
-cairo_user_font_face_get_text_to_glyphs_func
-                               (<parameter><link linkend="cairo-font-face-t"><type>cairo_font_face_t</type></link> *font_face</parameter>);</programlisting>
-<para>Gets the text-to-glyphs conversion function of a user-font.</para>
-<refsect3 id="cairo-user-font-face-get-text-to-glyphs-func.parameters" role="parameters">
-<title>Parameters</title>
-<informaltable role="parameters_table" pgwide="1" frame="none">
-<tgroup cols="3">
-<colspec colname="parameters_name" colwidth="150px"/>
-<colspec colname="parameters_description"/>
-<colspec colname="parameters_annotations" colwidth="200px"/>
-<tbody>
-<row><entry role="parameter_name"><para>font_face</para></entry>
-<entry role="parameter_description"><para>A user font face</para></entry>
-<entry role="parameter_annotations"></entry></row>
-</tbody></tgroup></informaltable>
-</refsect3><refsect3 id="cairo-user-font-face-get-text-to-glyphs-func.returns" role="returns">
-<title>Returns</title>
-<para> The text_to_glyphs callback of <parameter>font_face</parameter>
-or <link linkend="NULL:CAPS"><literal>NULL</literal></link> if none set or an error occurred.</para>
-</refsect3><para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-
-</refsect1>
-<refsect1 id="cairo-User-Fonts.other_details" role="details">
-<title role="details.title">Types and Values</title>
-<refsect2 id="CAIRO-HAS-USER-FONT:CAPS" role="macro" condition="since:1.8">
-<title>CAIRO_HAS_USER_FONT</title>
-<indexterm zone="CAIRO-HAS-USER-FONT:CAPS" role="1.8"><primary sortas="HAS_USER_FONT">CAIRO_HAS_USER_FONT</primary></indexterm>
-<programlisting language="C">#define CAIRO_HAS_USER_FONT 1
-</programlisting>
-<para>Defined if the user font backend is available.
-This macro can be used to conditionally compile backend-specific code.
-The user font backend is always built in versions of cairo that support
-this feature (1.8 and later).</para>
-<para role="since">Since: <link linkend="api-index-1.8">1.8</link></para></refsect2>
-
-</refsect1>
-
-</refentry>