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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>hb-ot-meta: HarfBuzz Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="HarfBuzz Manual"> <link rel="up" href="ch13.html" title="OpenType API"> <link rel="prev" href="harfbuzz-hb-ot-math.html" title="hb-ot-math"> <link rel="next" href="harfbuzz-hb-ot-metrics.html" title="hb-ot-metrics"> <meta name="generator" content="GTK-Doc V1.32 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"> <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> <a href="#harfbuzz-hb-ot-meta.description" class="shortcut">Description</a></span> </td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="ch13.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="harfbuzz-hb-ot-math.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="harfbuzz-hb-ot-metrics.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="harfbuzz-hb-ot-meta"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="harfbuzz-hb-ot-meta.top_of_page"></a>hb-ot-meta</span></h2> <p>hb-ot-meta — OpenType Metadata</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.functions"></a><h2>Functions</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="functions_proto_type"> <col class="functions_proto_name"> </colgroup> <tbody> <tr> <td class="function_type">unsigned <span class="returnvalue">int</span> </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-ot-meta.html#hb-ot-meta-get-entry-tags" title="hb_ot_meta_get_entry_tags ()">hb_ot_meta_get_entry_tags</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t" title="hb_blob_t"><span class="returnvalue">hb_blob_t</span></a> * </td> <td class="function_name"> <a class="link" href="harfbuzz-hb-ot-meta.html#hb-ot-meta-reference-entry" title="hb_ot_meta_reference_entry ()">hb_ot_meta_reference_entry</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.other"></a><h2>Types and Values</h2> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="other_proto_type"> <col class="other_proto_name"> </colgroup> <tbody><tr> <td class="datatype_keyword">enum</td> <td class="function_name"><a class="link" href="harfbuzz-hb-ot-meta.html#hb-ot-meta-tag-t" title="enum hb_ot_meta_tag_t">hb_ot_meta_tag_t</a></td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.includes"></a><h2>Includes</h2> <pre class="synopsis">#include <hb-ot.h> </pre> </div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.description"></a><h2>Description</h2> <p>Functions for fetching metadata from fonts.</p> </div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="hb-ot-meta-get-entry-tags"></a><h3>hb_ot_meta_get_entry_tags ()</h3> <pre class="programlisting">unsigned <span class="returnvalue">int</span> hb_ot_meta_get_entry_tags (<em class="parameter"><code><a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> *face</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>, <em class="parameter"><code>unsigned <span class="type">int</span> *entries_count</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-meta.html#hb-ot-meta-tag-t" title="enum hb_ot_meta_tag_t"><span class="type">hb_ot_meta_tag_t</span></a> *entries</code></em>);</pre> <div class="refsect3"> <a name="hb-ot-meta-get-entry-tags.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>face</p></td> <td class="parameter_description"><p>a face object</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>start_offset</p></td> <td class="parameter_description"><p>iteration's start offset</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>entries_count</p></td> <td class="parameter_description"><p>buffer size as input, filled size as output. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td> </tr> <tr> <td class="parameter_name"><p>entries</p></td> <td class="parameter_description"><p>entries tags buffer. </p></td> <td class="parameter_annotations"><span class="annotation">[<acronym title="Out parameter, where caller must allocate storage."><span class="acronym">out caller-allocates</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=entries_count]</span></td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-ot-meta-get-entry-tags.returns"></a><h4>Returns</h4> <p> Number of all available feature types.</p> </div> <p class="since">Since: <a class="link" href="api-index-2-6-0.html#api-index-2.6.0">2.6.0</a></p> </div> <hr> <div class="refsect2"> <a name="hb-ot-meta-reference-entry"></a><h3>hb_ot_meta_reference_entry ()</h3> <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t" title="hb_blob_t"><span class="returnvalue">hb_blob_t</span></a> * hb_ot_meta_reference_entry (<em class="parameter"><code><a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> *face</code></em>, <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-meta.html#hb-ot-meta-tag-t" title="enum hb_ot_meta_tag_t"><span class="type">hb_ot_meta_tag_t</span></a> meta_tag</code></em>);</pre> <p>It fetches metadata entry of a given tag from a font.</p> <div class="refsect3"> <a name="hb-ot-meta-reference-entry.parameters"></a><h4>Parameters</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>face</p></td> <td class="parameter_description"><p>a <a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> object.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>meta_tag</p></td> <td class="parameter_description"><p>tag of metadata you like to have.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="hb-ot-meta-reference-entry.returns"></a><h4>Returns</h4> <p>A blob containing the blob. </p> <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p> </div> <p class="since">Since: <a class="link" href="api-index-2-6-0.html#api-index-2.6.0">2.6.0</a></p> </div> </div> <div class="refsect1"> <a name="harfbuzz-hb-ot-meta.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="hb-ot-meta-tag-t"></a><h3>enum hb_ot_meta_tag_t</h3> <p>Known metadata tags from https://docs.microsoft.com/en-us/typography/opentype/spec/meta</p> <div class="refsect3"> <a name="hb-ot-meta-tag-t.members"></a><h4>Members</h4> <div class="informaltable"><table class="informaltable" width="100%" border="0"> <colgroup> <col width="300px" class="enum_members_name"> <col class="enum_members_description"> <col width="200px" class="enum_members_annotations"> </colgroup> <tbody> <tr> <td class="enum_member_name"><p><a name="HB-OT-META-TAG-DESIGN-LANGUAGES:CAPS"></a>HB_OT_META_TAG_DESIGN_LANGUAGES</p></td> <td class="enum_member_description"> <p>Design languages. Text, using only Basic Latin (ASCII) characters. Indicates languages and/or scripts for the user audiences that the font was primarily designed for.</p> </td> <td class="enum_member_annotations"> </td> </tr> <tr> <td class="enum_member_name"><p><a name="HB-OT-META-TAG-SUPPORTED-LANGUAGES:CAPS"></a>HB_OT_META_TAG_SUPPORTED_LANGUAGES</p></td> <td class="enum_member_description"> <p>Supported languages. Text, using only Basic Latin (ASCII) characters. Indicates languages and/or scripts that the font is declared to be capable of supporting.</p> </td> <td class="enum_member_annotations"> </td> </tr> <tr> <td class="enum_member_name"><p><a name="HB-OT-META-TAG-MAX-VALUE:CAPS"></a>_HB_OT_META_TAG_MAX_VALUE</p></td> <td> </td> <td> </td> </tr> </tbody> </table></div> </div> <p class="since">Since: <a class="link" href="api-index-2-6-0.html#api-index-2.6.0">2.6.0</a></p> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.32</div> </body> </html>