</td>
</tr>
<tr>
+<td class="function_type">
+<span class="returnvalue">void</span>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-collect-features-map" title="hb_ot_layout_collect_features_map ()">hb_ot_layout_collect_features_map</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
<td class="function_type">unsigned <span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
</td>
<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-font-extents" title="hb_ot_layout_get_font_extents ()">hb_ot_layout_get_font_extents</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-font-extents2" title="hb_ot_layout_get_font_extents2 ()">hb_ot_layout_get_font_extents2</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-baseline-tag-t" title="enum hb_ot_layout_baseline_tag_t"><span class="returnvalue">hb_ot_layout_baseline_tag_t</span></a>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-horizontal-baseline-tag-for-script" title="hb_ot_layout_get_horizontal_baseline_tag_for_script ()">hb_ot_layout_get_horizontal_baseline_tag_for_script</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+</td>
+<td class="function_name">
<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline" title="hb_ot_layout_get_baseline ()">hb_ot_layout_get_baseline</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline2" title="hb_ot_layout_get_baseline2 ()">hb_ot_layout_get_baseline2</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<span class="returnvalue">void</span>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline-with-fallback" title="hb_ot_layout_get_baseline_with_fallback ()">hb_ot_layout_get_baseline_with_fallback</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<span class="returnvalue">void</span>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline-with-fallback2" title="hb_ot_layout_get_baseline_with_fallback2 ()">hb_ot_layout_get_baseline_with_fallback2</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-glyph-class-t" title="enum hb_ot_layout_glyph_class_t"><span class="returnvalue">hb_ot_layout_glyph_class_t</span></a>
</td>
<td class="function_name">
</tr>
<tr>
<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-lookup-get-optical-bound" title="hb_ot_layout_lookup_get_optical_bound ()">hb_ot_layout_lookup_get_optical_bound</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
</td>
</tr>
<tr>
+<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+</td>
+<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-script-find-language" title="hb_ot_layout_script_find_language ()">hb_ot_layout_script_find_language</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
<td class="function_type">unsigned <span class="returnvalue">int</span>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
</td>
<td class="function_name">
+<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-script-select-language2" title="hb_ot_layout_script_select_language2 ()">hb_ot_layout_script_select_language2</a> <span class="c_punctuation">()</span>
+</td>
+</tr>
+<tr>
+<td class="function_type">
+<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+</td>
+<td class="function_name">
<a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-table-find-feature-variations" title="hb_ot_layout_table_find_feature_variations ()">hb_ot_layout_table_find_feature_variations</a> <span class="c_punctuation">()</span>
</td>
</tr>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-ot-layout.description"></a><h2>Description</h2>
-<p>Functions for querying OpenType Layout features in the font face.</p>
+<p>Functions for querying OpenType Layout features in the font face.
+See the <a class="ulink" href="http://www.microsoft.com/typography/otspec/" target="_top">OpenType specification</a>
+for details.</p>
</div>
<div class="refsect1">
<a name="harfbuzz-hb-ot-layout.functions_details"></a><h2>Functions</h2>
</tr>
<tr>
<td class="parameter_name"><p>language</p></td>
-<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> to convert.</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> to convert. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>script_count</p></td>
</tr>
<tr>
<td class="parameter_name"><p>scripts</p></td>
-<td class="parameter_description"><p>The array of scripts to collect lookups for</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of scripts to collect lookups for,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>languages</p></td>
-<td class="parameter_description"><p>The array of languages to collect lookups for</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of languages to collect lookups for,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
-<td class="parameter_description"><p>The array of features to collect lookups for</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of features to collect lookups for,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>lookup_indexes</p></td>
</tr>
<tr>
<td class="parameter_name"><p>scripts</p></td>
-<td class="parameter_description"><p>The array of scripts to collect features for</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of scripts to collect features for,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>languages</p></td>
-<td class="parameter_description"><p>The array of languages to collect features for</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of languages to collect features for,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
-<td class="parameter_description"><p>The array of features to collect</p></td>
-<td class="parameter_annotations"> </td>
+<td class="parameter_description"><p>The array of features to collect,
+terminated by <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><code class="literal">HB_TAG_NONE</code></a>. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>feature_indexes</p></td>
-<td class="parameter_description"><p>The array of feature indexes found for the query. </p></td>
+<td class="parameter_description"><p>The set of feature indexes found for the query. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-collect-features-map"></a><h3>hb_ot_layout_collect_features_map ()</h3>
+<pre class="programlisting"><span class="returnvalue">void</span>
+hb_ot_layout_collect_features_map (<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-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> table_tag</code></em>,
+ <em class="parameter"><code><span class="type">unsigned </span> script_index</code></em>,
+ <em class="parameter"><code><span class="type">unsigned </span> language_index</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-map.html#hb-map-t" title="hb_map_t"><span class="type">hb_map_t</span></a> *feature_map</code></em>);</pre>
+<p>Fetches the mapping from feature tags to feature indexes for
+the specified script and language.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-collect-features-map.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 class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> to work upon</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>table_tag</p></td>
+<td class="parameter_description"><p><a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GSUB:CAPS" title="HB_OT_TAG_GSUB"><span class="type">HB_OT_TAG_GSUB</span></a> or <a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GPOS:CAPS" title="HB_OT_TAG_GPOS"><span class="type">HB_OT_TAG_GPOS</span></a></p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script_index</p></td>
+<td class="parameter_description"><p>The index of the requested script tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_index</p></td>
+<td class="parameter_description"><p>The index of the requested language tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>feature_map</p></td>
+<td class="parameter_description"><p>The map of feature tag to feature index. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<p class="since">Since: <a class="link" href="api-index-8-1-0.html#api-index-8.1.0">8.1.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-feature-get-characters"></a><h3>hb_ot_layout_feature_get_characters ()</h3>
<pre class="programlisting">unsigned <span class="returnvalue">int</span>
hb_ot_layout_feature_get_characters (<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>,
<a name="hb-ot-layout-feature-with-variations-get-lookups.returns"></a><h4>Returns</h4>
<p> Total number of lookups.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-1-4-0.html#api-index-1.4.0">1.4.0</a></p>
</div>
<hr>
<div class="refsect2">
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-get-font-extents"></a><h3>hb_ot_layout_get_font_extents ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+hb_ot_layout_get_font_extents (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> script_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> language_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>);</pre>
+<p>Fetches script/language-specific font extents. These values are
+looked up in the <code class="literal">BASE</code> table's <code class="literal">MinMax</code> records.</p>
+<p>If no such extents are found, the default extents for the font are
+fetched. As such, the return value of this function can for the
+most part be ignored. Note that the per-script/language extents
+do not have a line-gap value, and the line-gap is set to zero in
+that case.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-font-extents.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>font</p></td>
+<td class="parameter_description"><p>a font</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>text direction.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script_tag</p></td>
+<td class="parameter_description"><p>script tag.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_tag</p></td>
+<td class="parameter_description"><p>language tag.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>extents</p></td>
+<td class="parameter_description"><p>font extents if found. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-get-font-extents.returns"></a><h4>Returns</h4>
+<p> <code class="literal">true</code> if found script/language-specific font extents.</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-8-0-0.html#api-index-8.0.0">8.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="hb-ot-layout-get-font-extents2"></a><h3>hb_ot_layout_get_font_extents2 ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+hb_ot_layout_get_font_extents2 (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> language</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>);</pre>
+<p>Fetches script/language-specific font extents. These values are
+looked up in the <code class="literal">BASE</code> table's <code class="literal">MinMax</code> records.</p>
+<p>If no such extents are found, the default extents for the font are
+fetched. As such, the return value of this function can for the
+most part be ignored. Note that the per-script/language extents
+do not have a line-gap value, and the line-gap is set to zero in
+that case.</p>
+<p>This function is like <a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-font-extents" title="hb_ot_layout_get_font_extents ()"><code class="function">hb_ot_layout_get_font_extents()</code></a> but takes
+<a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> and <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> instead of OpenType <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a>.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-font-extents2.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>font</p></td>
+<td class="parameter_description"><p>a font</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>text direction.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script</p></td>
+<td class="parameter_description"><p>script.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language</p></td>
+<td class="parameter_description"><p>language. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+<tr>
+<td class="parameter_name"><p>extents</p></td>
+<td class="parameter_description"><p>font extents if found. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-get-font-extents2.returns"></a><h4>Returns</h4>
+<p> <code class="literal">true</code> if found script/language-specific font extents.</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-8-0-0.html#api-index-8.0.0">8.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="hb-ot-layout-get-horizontal-baseline-tag-for-script"></a><h3>hb_ot_layout_get_horizontal_baseline_tag_for_script ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-baseline-tag-t" title="enum hb_ot_layout_baseline_tag_t"><span class="returnvalue">hb_ot_layout_baseline_tag_t</span></a>
+hb_ot_layout_get_horizontal_baseline_tag_for_script
+ (<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>);</pre>
+<p>Fetches the dominant horizontal baseline tag used by <em class="parameter"><code>script</code></em>
+.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-horizontal-baseline-tag-for-script.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>script</p></td>
+<td class="parameter_description"><p>a script tag.</p></td>
+<td class="parameter_annotations"> </td>
+</tr></tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-get-horizontal-baseline-tag-for-script.returns"></a><h4>Returns</h4>
+<p> dominant baseline tag for the <em class="parameter"><code>script</code></em>
+.</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-4-0-0.html#api-index-4.0.0">4.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-get-baseline"></a><h3>hb_ot_layout_get_baseline ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
hb_ot_layout_get_baseline (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
<tr>
<td class="parameter_name"><p>coord</p></td>
<td class="parameter_description"><p>baseline value if found. </p></td>
-<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-get-baseline2"></a><h3>hb_ot_layout_get_baseline2 ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+hb_ot_layout_get_baseline2 (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-baseline-tag-t" title="enum hb_ot_layout_baseline_tag_t"><span class="type">hb_ot_layout_baseline_tag_t</span></a> baseline_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> language</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> *coord</code></em>);</pre>
+<p>Fetches a baseline value from the face.</p>
+<p>This function is like <a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline" title="hb_ot_layout_get_baseline ()"><code class="function">hb_ot_layout_get_baseline()</code></a> but takes
+<a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> and <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> instead of OpenType <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a>.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-baseline2.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>font</p></td>
+<td class="parameter_description"><p>a font</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>baseline_tag</p></td>
+<td class="parameter_description"><p>a baseline tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>text direction.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script</p></td>
+<td class="parameter_description"><p>script.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language</p></td>
+<td class="parameter_description"><p>language, currently unused. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+<tr>
+<td class="parameter_name"><p>coord</p></td>
+<td class="parameter_description"><p>baseline value if found. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-get-baseline2.returns"></a><h4>Returns</h4>
+<p> <code class="literal">true</code> if found baseline value in the font.</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-8-0-0.html#api-index-8.0.0">8.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="hb-ot-layout-get-baseline-with-fallback"></a><h3>hb_ot_layout_get_baseline_with_fallback ()</h3>
+<pre class="programlisting"><span class="returnvalue">void</span>
+hb_ot_layout_get_baseline_with_fallback
+ (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-baseline-tag-t" title="enum hb_ot_layout_baseline_tag_t"><span class="type">hb_ot_layout_baseline_tag_t</span></a> baseline_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> script_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> language_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> *coord</code></em>);</pre>
+<p>Fetches a baseline value from the face, and synthesizes
+it if the font does not have it.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-baseline-with-fallback.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>font</p></td>
+<td class="parameter_description"><p>a font</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>baseline_tag</p></td>
+<td class="parameter_description"><p>a baseline tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>text direction.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script_tag</p></td>
+<td class="parameter_description"><p>script tag.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_tag</p></td>
+<td class="parameter_description"><p>language tag, currently unused.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>coord</p></td>
+<td class="parameter_description"><p>baseline value if found. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<p class="since">Since: <a class="link" href="api-index-4-0-0.html#api-index-4.0.0">4.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
+<a name="hb-ot-layout-get-baseline-with-fallback2"></a><h3>hb_ot_layout_get_baseline_with_fallback2 ()</h3>
+<pre class="programlisting"><span class="returnvalue">void</span>
+hb_ot_layout_get_baseline_with_fallback2
+ (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-baseline-tag-t" title="enum hb_ot_layout_baseline_tag_t"><span class="type">hb_ot_layout_baseline_tag_t</span></a> baseline_tag</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> language</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> *coord</code></em>);</pre>
+<p>Fetches a baseline value from the face, and synthesizes
+it if the font does not have it.</p>
+<p>This function is like <a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-get-baseline-with-fallback" title="hb_ot_layout_get_baseline_with_fallback ()"><code class="function">hb_ot_layout_get_baseline_with_fallback()</code></a> but takes
+<a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> and <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> instead of OpenType <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a>.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-get-baseline-with-fallback2.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>font</p></td>
+<td class="parameter_description"><p>a font</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>baseline_tag</p></td>
+<td class="parameter_description"><p>a baseline tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>text direction.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script</p></td>
+<td class="parameter_description"><p>script.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language</p></td>
+<td class="parameter_description"><p>language, currently unused. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
+</tr>
+<tr>
+<td class="parameter_name"><p>coord</p></td>
+<td class="parameter_description"><p>baseline value if found. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<p class="since">Since: <a class="link" href="api-index-8-0-0.html#api-index-8.0.0">8.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-get-glyph-class"></a><h3>hb_ot_layout_get_glyph_class ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-glyph-class-t" title="enum hb_ot_layout_glyph_class_t"><span class="returnvalue">hb_ot_layout_glyph_class_t</span></a>
hb_ot_layout_get_glyph_class (<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-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> *caret_array</code></em>);</pre>
<p>Fetches a list of the caret positions defined for a ligature glyph in the GDEF
table of the font. The list returned will begin at the offset provided.</p>
+<p>Note that a ligature that is formed from n characters will have n-1
+caret positions. The first character is not represented in the array,
+since its caret position is the glyph position.</p>
+<p>The positions returned by this function are 'unshaped', and will have to
+be fixed up for kerning that may be applied to the ligature glyph.</p>
<div class="refsect3">
<a name="hb-ot-layout-get-ligature-carets.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<a name="hb-ot-layout-has-substitution.returns"></a><h4>Returns</h4>
<p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-ot-layout-language-find-feature.returns"></a><h4>Returns</h4>
<p> <code class="literal">true</code> if the feature is found, <code class="literal">false</code> otherwise</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-ot-layout-language-get-feature-indexes.returns"></a><h4>Returns</h4>
<p> Total number of features.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="hb-ot-layout-language-get-feature-tags.returns"></a><h4>Returns</h4>
<p> Total number of feature tags.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-lookup-get-optical-bound"></a><h3>hb_ot_layout_lookup_get_optical_bound ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
+hb_ot_layout_lookup_get_optical_bound (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
+ <em class="parameter"><code><span class="type">unsigned </span> lookup_index</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> glyph</code></em>);</pre>
+<p>Fetches the optical bound of a glyph positioned at the margin of text.
+The direction identifies which edge of the glyph to query.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-lookup-get-optical-bound.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>font</p></td>
+<td class="parameter_description"><p>a font.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>lookup_index</p></td>
+<td class="parameter_description"><p>index of the feature lookup to query.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>direction</p></td>
+<td class="parameter_description"><p>edge of the glyph to query.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>glyph</p></td>
+<td class="parameter_description"><p>a glyph id.</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-lookup-get-optical-bound.returns"></a><h4>Returns</h4>
+<p> Adjustment value. Negative values mean the glyph will stick out of the margin.</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-5-3-0.html#api-index-5.3.0">5.3.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-lookup-substitute-closure"></a><h3>hb_ot_layout_lookup_substitute_closure ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
hb_ot_layout_lookup_substitute_closure
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-script-find-language"></a><h3>hb_ot_layout_script_find_language ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+hb_ot_layout_script_find_language (<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-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> table_tag</code></em>,
+ <em class="parameter"><code>unsigned <span class="type">int</span> script_index</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> language_tag</code></em>,
+ <em class="parameter"><code>unsigned <span class="type">int</span> *language_index</code></em>);</pre>
+<div class="warning"><p><code class="literal">hb_ot_layout_script_find_language</code> has been deprecated since version 2.0.0 and should not be used in newly-written code.</p></div>
+<p>Fetches the index of a given language tag in the specified face's GSUB table
+or GPOS table, underneath the specified script tag.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-script-find-language.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 class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> to work upon</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>table_tag</p></td>
+<td class="parameter_description"><p><a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GSUB:CAPS" title="HB_OT_TAG_GSUB"><span class="type">HB_OT_TAG_GSUB</span></a> or <a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GPOS:CAPS" title="HB_OT_TAG_GPOS"><span class="type">HB_OT_TAG_GPOS</span></a></p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script_index</p></td>
+<td class="parameter_description"><p>The index of the requested script tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_tag</p></td>
+<td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> of the requested language</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_index</p></td>
+<td class="parameter_description"><p>The index of the requested language</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-script-find-language.returns"></a><h4>Returns</h4>
+<p> <code class="literal">true</code> if the language tag is found, <code class="literal">false</code> otherwise</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-script-get-language-tags"></a><h3>hb_ot_layout_script_get_language_tags ()</h3>
<pre class="programlisting">unsigned <span class="returnvalue">int</span>
hb_ot_layout_script_get_language_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>,
<a name="hb-ot-layout-script-get-language-tags.returns"></a><h4>Returns</h4>
<p> Total number of language tags.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
</div>
<hr>
<div class="refsect2">
+<a name="hb-ot-layout-script-select-language2"></a><h3>hb_ot_layout_script_select_language2 ()</h3>
+<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
+hb_ot_layout_script_select_language2 (<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-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> table_tag</code></em>,
+ <em class="parameter"><code>unsigned <span class="type">int</span> script_index</code></em>,
+ <em class="parameter"><code>unsigned <span class="type">int</span> language_count</code></em>,
+ <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> *language_tags</code></em>,
+ <em class="parameter"><code>unsigned <span class="type">int</span> *language_index</code></em>,
+ <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> *chosen_language</code></em>);</pre>
+<p>Fetches the index of the first language tag fom <em class="parameter"><code>language_tags</code></em>
+ that is present
+in the specified face's GSUB or GPOS table, underneath the specified script
+index.</p>
+<p>If none of the given language tags is found, <code class="literal">false</code> is returned and
+<em class="parameter"><code>language_index</code></em>
+ is set to <a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-LAYOUT-DEFAULT-LANGUAGE-INDEX:CAPS" title="HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX"><span class="type">HB_OT_LAYOUT_DEFAULT_LANGUAGE_INDEX</span></a> and
+<em class="parameter"><code>chosen_language</code></em>
+ is set to <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><span class="type">HB_TAG_NONE</span></a>.</p>
+<div class="refsect3">
+<a name="hb-ot-layout-script-select-language2.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 class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> to work upon</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>table_tag</p></td>
+<td class="parameter_description"><p><a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GSUB:CAPS" title="HB_OT_TAG_GSUB"><span class="type">HB_OT_TAG_GSUB</span></a> or <a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-TAG-GPOS:CAPS" title="HB_OT_TAG_GPOS"><span class="type">HB_OT_TAG_GPOS</span></a></p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>script_index</p></td>
+<td class="parameter_description"><p>The index of the requested script tag</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_count</p></td>
+<td class="parameter_description"><p>The number of languages in the specified script</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_tags</p></td>
+<td class="parameter_description"><p>The array of language tags</p></td>
+<td class="parameter_annotations"> </td>
+</tr>
+<tr>
+<td class="parameter_name"><p>language_index</p></td>
+<td class="parameter_description"><p>The index of the chosen language. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+</tr>
+<tr>
+<td class="parameter_name"><p>chosen_language</p></td>
+<td class="parameter_description"><p><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> of the chosen language. </p></td>
+<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
+</tr>
+</tbody>
+</table></div>
+</div>
+<div class="refsect3">
+<a name="hb-ot-layout-script-select-language2.returns"></a><h4>Returns</h4>
+<p> <code class="literal">true</code> if one of the given language tags is found, <code class="literal">false</code> otherwise</p>
+</div>
+<p class="since">Since: <a class="link" href="api-index-7-0-0.html#api-index-7.0.0">7.0.0</a></p>
+</div>
+<hr>
+<div class="refsect2">
<a name="hb-ot-layout-table-find-feature-variations"></a><h3>hb_ot_layout_table_find_feature_variations ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
hb_ot_layout_table_find_feature_variations
<a name="hb-ot-layout-table-find-feature-variations.returns"></a><h4>Returns</h4>
<p> <code class="literal">true</code> if feature variations were found, <code class="literal">false</code> otherwise.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-1-4-0.html#api-index-1.4.0">1.4.0</a></p>
</div>
<hr>
<div class="refsect2">
<em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> *feature_count</code></em>,
<em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> *feature_tags</code></em>);</pre>
-<p>Fetches a list of all feature tags in the given face's GSUB or GPOS table.</p>
+<p>Fetches a list of all feature tags in the given face's GSUB or GPOS table.
+Note that there might be duplicate feature tags, belonging to different
+script/language-system pairs of the table.</p>
<div class="refsect3">
<a name="hb-ot-layout-table-get-feature-tags.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<a name="hb-ot-layout-table-get-feature-tags.returns"></a><h4>Returns</h4>
<p> Total number of feature tags.</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
<hr>
<div class="refsect2">
<p>If the table does not have any of the requested scripts, then <code class="literal">DFLT</code>,
<code class="literal">dflt</code>, and <code class="literal">latn</code> tags are tried in that order. If the table still does not
have any of these scripts, <em class="parameter"><code>script_index</code></em>
- and <em class="parameter"><code>chosen_script</code></em>
- are set to
-<a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-LAYOUT-NO-SCRIPT-INDEX:CAPS" title="HB_OT_LAYOUT_NO_SCRIPT_INDEX"><span class="type">HB_OT_LAYOUT_NO_SCRIPT_INDEX</span></a>.</p>
+ is set to
+<a class="link" href="harfbuzz-hb-ot-layout.html#HB-OT-LAYOUT-NO-SCRIPT-INDEX:CAPS" title="HB_OT_LAYOUT_NO_SCRIPT_INDEX"><span class="type">HB_OT_LAYOUT_NO_SCRIPT_INDEX</span></a> and <em class="parameter"><code>chosen_script</code></em>
+ is set to <a class="link" href="harfbuzz-hb-common.html#HB-TAG-NONE:CAPS" title="HB_TAG_NONE"><span class="type">HB_TAG_NONE</span></a>.</p>
<div class="refsect3">
<a name="hb-ot-layout-table-select-script.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<a name="hb-ot-layout-language-get-required-feature-index.returns"></a><h4>Returns</h4>
<p> <code class="literal">true</code> if the feature is found, <code class="literal">false</code> otherwise</p>
</div>
+<p class="since">Since: <a class="link" href="api-index-0-6-0.html#api-index-0.6.0">0.6.0</a></p>
</div>
</div>
<div class="refsect1">
<td class="enum_member_annotations"> </td>
</tr>
<tr>
+<td class="enum_member_name"><p><a name="HB-OT-LAYOUT-BASELINE-TAG-IDEO-FACE-CENTRAL:CAPS"></a>HB_OT_LAYOUT_BASELINE_TAG_IDEO_FACE_CENTRAL</p></td>
+<td class="enum_member_description">
+<p>The center of the ideographic character face. Since: 4.0.0</p>
+</td>
+<td class="enum_member_annotations"> </td>
+</tr>
+<tr>
<td class="enum_member_name"><p><a name="HB-OT-LAYOUT-BASELINE-TAG-IDEO-EMBOX-BOTTOM-OR-LEFT:CAPS"></a>HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_BOTTOM_OR_LEFT</p></td>
<td class="enum_member_description">
<p>Ideographic em-box bottom or left edge,
<tr>
<td class="enum_member_name"><p><a name="HB-OT-LAYOUT-BASELINE-TAG-IDEO-EMBOX-TOP-OR-RIGHT:CAPS"></a>HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_TOP_OR_RIGHT</p></td>
<td class="enum_member_description">
-<p>Ideographic em-box top or right edge baseline,
+<p>Ideographic em-box top or right edge baseline,</p>
+</td>
+<td class="enum_member_annotations"> </td>
+</tr>
+<tr>
+<td class="enum_member_name"><p><a name="HB-OT-LAYOUT-BASELINE-TAG-IDEO-EMBOX-CENTRAL:CAPS"></a>HB_OT_LAYOUT_BASELINE_TAG_IDEO_EMBOX_CENTRAL</p></td>
+<td class="enum_member_description">
+<p>The center of the ideographic em-box. Since: 4.0.0
if the direction is horizontal or vertical, respectively.</p>
</td>
<td class="enum_member_annotations"> </td>
projects / platform / upstream / harfbuzz.git / blobdiff