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  25 <div class="refentry">
  26 <a name="harfbuzz-hb-ot-math"></a><div class="titlepage"></div>
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  28 <td valign="top">
  29 <h2><span class="refentrytitle"><a name="harfbuzz-hb-ot-math.top_of_page"></a>hb-ot-math</span></h2>
  30 <p>hb-ot-math — OpenType Math information</p>
  31 </td>
  32 <td class="gallery_image" valign="top" align="right"></td>
  33 </tr></table></div>
  34 <div class="refsect1">
  35 <a name="harfbuzz-hb-ot-math.functions"></a><h2>Functions</h2>
  36 <div class="informaltable"><table class="informaltable" width="100%" border="0">
  37 <colgroup>
  38 <col width="150px" class="functions_return">
  39 <col class="functions_name">
  40 </colgroup>
  41 <tbody>
  42 <tr>
  43 <td class="function_type">
  44 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
  45 </td>
  46 <td class="function_name">
  47 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-has-data" title="hb_ot_math_has_data ()">hb_ot_math_has_data</a> <span class="c_punctuation">()</span>
  48 </td>
  49 </tr>
  50 <tr>
  51 <td class="function_type">
  52 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
  53 </td>
  54 <td class="function_name">
  55 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-constant" title="hb_ot_math_get_constant ()">hb_ot_math_get_constant</a> <span class="c_punctuation">()</span>
  56 </td>
  57 </tr>
  58 <tr>
  59 <td class="function_type">
  60 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
  61 </td>
  62 <td class="function_name">
  63 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-italics-correction" title="hb_ot_math_get_glyph_italics_correction ()">hb_ot_math_get_glyph_italics_correction</a> <span class="c_punctuation">()</span>
  64 </td>
  65 </tr>
  66 <tr>
  67 <td class="function_type">
  68 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
  69 </td>
  70 <td class="function_name">
  71 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-top-accent-attachment" title="hb_ot_math_get_glyph_top_accent_attachment ()">hb_ot_math_get_glyph_top_accent_attachment</a> <span class="c_punctuation">()</span>
  72 </td>
  73 </tr>
  74 <tr>
  75 <td class="function_type">
  76 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
  77 </td>
  78 <td class="function_name">
  79 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-kerning" title="hb_ot_math_get_glyph_kerning ()">hb_ot_math_get_glyph_kerning</a> <span class="c_punctuation">()</span>
  80 </td>
  81 </tr>
  82 <tr>
  83 <td class="function_type">
  84 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
  85 </td>
  86 <td class="function_name">
  87 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-is-glyph-extended-shape" title="hb_ot_math_is_glyph_extended_shape ()">hb_ot_math_is_glyph_extended_shape</a> <span class="c_punctuation">()</span>
  88 </td>
  89 </tr>
  90 <tr>
  91 <td class="function_type">unsigned <span class="returnvalue">int</span>
  92 </td>
  93 <td class="function_name">
  94 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-variants" title="hb_ot_math_get_glyph_variants ()">hb_ot_math_get_glyph_variants</a> <span class="c_punctuation">()</span>
  95 </td>
  96 </tr>
  97 <tr>
  98 <td class="function_type">
  99 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 100 </td>
 101 <td class="function_name">
 102 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-min-connector-overlap" title="hb_ot_math_get_min_connector_overlap ()">hb_ot_math_get_min_connector_overlap</a> <span class="c_punctuation">()</span>
 103 </td>
 104 </tr>
 105 <tr>
 106 <td class="function_type">unsigned <span class="returnvalue">int</span>
 107 </td>
 108 <td class="function_name">
 109 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-assembly" title="hb_ot_math_get_glyph_assembly ()">hb_ot_math_get_glyph_assembly</a> <span class="c_punctuation">()</span>
 110 </td>
 111 </tr>
 112 </tbody>
 113 </table></div>
 114 </div>
 115 <div class="refsect1">
 116 <a name="harfbuzz-hb-ot-math.other"></a><h2>Types and Values</h2>
 117 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 118 <colgroup>
 119 <col width="150px" class="name">
 120 <col class="description">
 121 </colgroup>
 122 <tbody>
 123 <tr>
 124 <td class="define_keyword">#define</td>
 125 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-TAG-MATH:CAPS" title="HB_OT_TAG_MATH">HB_OT_TAG_MATH</a></td>
 126 </tr>
 127 <tr>
 128 <td class="define_keyword">#define</td>
 129 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-MATH-SCRIPT:CAPS" title="HB_OT_MATH_SCRIPT">HB_OT_MATH_SCRIPT</a></td>
 130 </tr>
 131 <tr>
 132 <td class="datatype_keyword">enum</td>
 133 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-constant-t" title="enum hb_ot_math_constant_t">hb_ot_math_constant_t</a></td>
 134 </tr>
 135 <tr>
 136 <td class="datatype_keyword">enum</td>
 137 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-t" title="enum hb_ot_math_kern_t">hb_ot_math_kern_t</a></td>
 138 </tr>
 139 <tr>
 140 <td class="datatype_keyword"> </td>
 141 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-variant-t" title="hb_ot_math_glyph_variant_t">hb_ot_math_glyph_variant_t</a></td>
 142 </tr>
 143 <tr>
 144 <td class="datatype_keyword">enum</td>
 145 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-part-flags-t" title="enum hb_ot_math_glyph_part_flags_t">hb_ot_math_glyph_part_flags_t</a></td>
 146 </tr>
 147 <tr>
 148 <td class="datatype_keyword"> </td>
 149 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-part-t" title="hb_ot_math_glyph_part_t">hb_ot_math_glyph_part_t</a></td>
 150 </tr>
 151 </tbody>
 152 </table></div>
 153 </div>
 154 <div class="refsect1">
 155 <a name="harfbuzz-hb-ot-math.includes"></a><h2>Includes</h2>
 156 <pre class="synopsis">#include &lt;hb-ot.h&gt;
 157 </pre>
 158 </div>
 159 <div class="refsect1">
 160 <a name="harfbuzz-hb-ot-math.description"></a><h2>Description</h2>
 161 <p>Functions for fetching mathematics layout data from OpenType fonts.</p>
 162 </div>
 163 <div class="refsect1">
 164 <a name="harfbuzz-hb-ot-math.functions_details"></a><h2>Functions</h2>
 165 <div class="refsect2">
 166 <a name="hb-ot-math-has-data"></a><h3>hb_ot_math_has_data ()</h3>
 167 <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>
 168 hb_ot_math_has_data (<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>);</pre>
 169 <p>This function allows to verify the presence of an OpenType MATH table on the
 170 face.</p>
 171 <div class="refsect3">
 172 <a name="hb-ot-math-has-data.parameters"></a><h4>Parameters</h4>
 173 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 174 <colgroup>
 175 <col width="150px" class="parameters_name">
 176 <col class="parameters_description">
 177 <col width="200px" class="parameters_annotations">
 178 </colgroup>
 179 <tbody><tr>
 180 <td class="parameter_name"><p>face</p></td>
 181 <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 test</p></td>
 182 <td class="parameter_annotations"> </td>
 183 </tr></tbody>
 184 </table></div>
 185 </div>
 186 <div class="refsect3">
 187 <a name="hb-ot-math-has-data.returns"></a><h4>Returns</h4>
 188 <p> true if face has a MATH table, false otherwise</p>
 189 </div>
 190 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 191 </div>
 192 <hr>
 193 <div class="refsect2">
 194 <a name="hb-ot-math-get-constant"></a><h3>hb_ot_math_get_constant ()</h3>
 195 <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>
 196 hb_ot_math_get_constant (<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>,
 197                          <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-constant-t" title="enum hb_ot_math_constant_t"><span class="type">hb_ot_math_constant_t</span></a> constant</code></em>);</pre>
 198 <p>This function returns the requested math constants as a <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a>.
 199 If the request constant is HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN,
 200 HB_OT_MATH_CONSTANT_SCRIPT_SCRIPT_PERCENT_SCALE_DOWN or
 201 HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN then the return value is
 202 actually an integer between 0 and 100 representing that percentage.</p>
 203 <div class="refsect3">
 204 <a name="hb-ot-math-get-constant.parameters"></a><h4>Parameters</h4>
 205 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 206 <colgroup>
 207 <col width="150px" class="parameters_name">
 208 <col class="parameters_description">
 209 <col width="200px" class="parameters_annotations">
 210 </colgroup>
 211 <tbody>
 212 <tr>
 213 <td class="parameter_name"><p>font</p></td>
 214 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the value</p></td>
 215 <td class="parameter_annotations"> </td>
 216 </tr>
 217 <tr>
 218 <td class="parameter_name"><p>constant</p></td>
 219 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-constant-t" title="enum hb_ot_math_constant_t"><span class="type">hb_ot_math_constant_t</span></a> the constant to retrieve</p></td>
 220 <td class="parameter_annotations"> </td>
 221 </tr>
 222 </tbody>
 223 </table></div>
 224 </div>
 225 <div class="refsect3">
 226 <a name="hb-ot-math-get-constant.returns"></a><h4>Returns</h4>
 227 <p> the requested constant or 0</p>
 228 </div>
 229 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 230 </div>
 231 <hr>
 232 <div class="refsect2">
 233 <a name="hb-ot-math-get-glyph-italics-correction"></a><h3>hb_ot_math_get_glyph_italics_correction ()</h3>
 234 <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>
 235 hb_ot_math_get_glyph_italics_correction
 236                                (<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>,
 237                                 <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>
 238 <div class="refsect3">
 239 <a name="hb-ot-math-get-glyph-italics-correction.parameters"></a><h4>Parameters</h4>
 240 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 241 <colgroup>
 242 <col width="150px" class="parameters_name">
 243 <col class="parameters_description">
 244 <col width="200px" class="parameters_annotations">
 245 </colgroup>
 246 <tbody>
 247 <tr>
 248 <td class="parameter_name"><p>font</p></td>
 249 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the value</p></td>
 250 <td class="parameter_annotations"> </td>
 251 </tr>
 252 <tr>
 253 <td class="parameter_name"><p>glyph</p></td>
 254 <td class="parameter_description"><p>glyph index from which to retrieve the value</p></td>
 255 <td class="parameter_annotations"> </td>
 256 </tr>
 257 </tbody>
 258 </table></div>
 259 </div>
 260 <div class="refsect3">
 261 <a name="hb-ot-math-get-glyph-italics-correction.returns"></a><h4>Returns</h4>
 262 <p> the italics correction of the glyph or 0</p>
 263 </div>
 264 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 265 </div>
 266 <hr>
 267 <div class="refsect2">
 268 <a name="hb-ot-math-get-glyph-top-accent-attachment"></a><h3>hb_ot_math_get_glyph_top_accent_attachment ()</h3>
 269 <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>
 270 hb_ot_math_get_glyph_top_accent_attachment
 271                                (<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>,
 272                                 <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>
 273 <div class="refsect3">
 274 <a name="hb-ot-math-get-glyph-top-accent-attachment.parameters"></a><h4>Parameters</h4>
 275 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 276 <colgroup>
 277 <col width="150px" class="parameters_name">
 278 <col class="parameters_description">
 279 <col width="200px" class="parameters_annotations">
 280 </colgroup>
 281 <tbody>
 282 <tr>
 283 <td class="parameter_name"><p>font</p></td>
 284 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the value</p></td>
 285 <td class="parameter_annotations"> </td>
 286 </tr>
 287 <tr>
 288 <td class="parameter_name"><p>glyph</p></td>
 289 <td class="parameter_description"><p>glyph index from which to retrieve the value</p></td>
 290 <td class="parameter_annotations"> </td>
 291 </tr>
 292 </tbody>
 293 </table></div>
 294 </div>
 295 <div class="refsect3">
 296 <a name="hb-ot-math-get-glyph-top-accent-attachment.returns"></a><h4>Returns</h4>
 297 <p> the top accent attachment of the glyph or 0</p>
 298 </div>
 299 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 300 </div>
 301 <hr>
 302 <div class="refsect2">
 303 <a name="hb-ot-math-get-glyph-kerning"></a><h3>hb_ot_math_get_glyph_kerning ()</h3>
 304 <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>
 305 hb_ot_math_get_glyph_kerning (<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>,
 306                               <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>,
 307                               <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-t" title="enum hb_ot_math_kern_t"><span class="type">hb_ot_math_kern_t</span></a> kern</code></em>,
 308                               <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> correction_height</code></em>);</pre>
 309 <p>This function tries to retrieve the MathKern table for the specified font,
 310 glyph and <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-t" title="enum hb_ot_math_kern_t"><span class="type">hb_ot_math_kern_t</span></a>. Then it browses the list of heights from the
 311 MathKern table to find one value that is greater or equal to specified
 312 correction_height. If one is found the corresponding value from the list of
 313 kerns is returned and otherwise the last kern value is returned.</p>
 314 <div class="refsect3">
 315 <a name="hb-ot-math-get-glyph-kerning.parameters"></a><h4>Parameters</h4>
 316 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 317 <colgroup>
 318 <col width="150px" class="parameters_name">
 319 <col class="parameters_description">
 320 <col width="200px" class="parameters_annotations">
 321 </colgroup>
 322 <tbody>
 323 <tr>
 324 <td class="parameter_name"><p>font</p></td>
 325 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the value</p></td>
 326 <td class="parameter_annotations"> </td>
 327 </tr>
 328 <tr>
 329 <td class="parameter_name"><p>glyph</p></td>
 330 <td class="parameter_description"><p>glyph index from which to retrieve the value</p></td>
 331 <td class="parameter_annotations"> </td>
 332 </tr>
 333 <tr>
 334 <td class="parameter_name"><p>kern</p></td>
 335 <td class="parameter_description"><p>the <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-t" title="enum hb_ot_math_kern_t"><span class="type">hb_ot_math_kern_t</span></a> from which to retrieve the value</p></td>
 336 <td class="parameter_annotations"> </td>
 337 </tr>
 338 <tr>
 339 <td class="parameter_name"><p>correction_height</p></td>
 340 <td class="parameter_description"><p>the correction height to use to determine the kerning.</p></td>
 341 <td class="parameter_annotations"> </td>
 342 </tr>
 343 </tbody>
 344 </table></div>
 345 </div>
 346 <div class="refsect3">
 347 <a name="hb-ot-math-get-glyph-kerning.returns"></a><h4>Returns</h4>
 348 <p> requested kerning or 0</p>
 349 </div>
 350 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 351 </div>
 352 <hr>
 353 <div class="refsect2">
 354 <a name="hb-ot-math-is-glyph-extended-shape"></a><h3>hb_ot_math_is_glyph_extended_shape ()</h3>
 355 <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>
 356 hb_ot_math_is_glyph_extended_shape (<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>,
 357                                     <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>
 358 <div class="refsect3">
 359 <a name="hb-ot-math-is-glyph-extended-shape.parameters"></a><h4>Parameters</h4>
 360 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 361 <colgroup>
 362 <col width="150px" class="parameters_name">
 363 <col class="parameters_description">
 364 <col width="200px" class="parameters_annotations">
 365 </colgroup>
 366 <tbody>
 367 <tr>
 368 <td class="parameter_name"><p>face</p></td>
 369 <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> to test</p></td>
 370 <td class="parameter_annotations"> </td>
 371 </tr>
 372 <tr>
 373 <td class="parameter_name"><p>glyph</p></td>
 374 <td class="parameter_description"><p>a glyph index to test</p></td>
 375 <td class="parameter_annotations"> </td>
 376 </tr>
 377 </tbody>
 378 </table></div>
 379 </div>
 380 <div class="refsect3">
 381 <a name="hb-ot-math-is-glyph-extended-shape.returns"></a><h4>Returns</h4>
 382 <p> true if the glyph is an extended shape, false otherwise</p>
 383 </div>
 384 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 385 </div>
 386 <hr>
 387 <div class="refsect2">
 388 <a name="hb-ot-math-get-glyph-variants"></a><h3>hb_ot_math_get_glyph_variants ()</h3>
 389 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
 390 hb_ot_math_get_glyph_variants (<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>,
 391                                <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>,
 392                                <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>,
 393                                <em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>,
 394                                <em class="parameter"><code>unsigned <span class="type">int</span> *variants_count</code></em>,
 395                                <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-variant-t" title="hb_ot_math_glyph_variant_t"><span class="type">hb_ot_math_glyph_variant_t</span></a> *variants</code></em>);</pre>
 396 <p>This function tries to retrieve the MathGlyphConstruction for the specified
 397 font, glyph and direction. Note that only the value of
 398 <a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-HORIZONTAL:CAPS" title="HB_DIRECTION_IS_HORIZONTAL()"><span class="type">HB_DIRECTION_IS_HORIZONTAL</span></a> is considered. It provides the corresponding list
 399 of size variants as an array of hb_ot_math_glyph_variant_t structs.</p>
 400 <div class="refsect3">
 401 <a name="hb-ot-math-get-glyph-variants.parameters"></a><h4>Parameters</h4>
 402 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 403 <colgroup>
 404 <col width="150px" class="parameters_name">
 405 <col class="parameters_description">
 406 <col width="200px" class="parameters_annotations">
 407 </colgroup>
 408 <tbody>
 409 <tr>
 410 <td class="parameter_name"><p>font</p></td>
 411 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the values</p></td>
 412 <td class="parameter_annotations"> </td>
 413 </tr>
 414 <tr>
 415 <td class="parameter_name"><p>glyph</p></td>
 416 <td class="parameter_description"><p>index of the glyph to stretch</p></td>
 417 <td class="parameter_annotations"> </td>
 418 </tr>
 419 <tr>
 420 <td class="parameter_name"><p>direction</p></td>
 421 <td class="parameter_description"><p>direction of the stretching</p></td>
 422 <td class="parameter_annotations"> </td>
 423 </tr>
 424 <tr>
 425 <td class="parameter_name"><p>start_offset</p></td>
 426 <td class="parameter_description"><p>offset of the first variant to retrieve</p></td>
 427 <td class="parameter_annotations"> </td>
 428 </tr>
 429 <tr>
 430 <td class="parameter_name"><p>variants_count</p></td>
 431 <td class="parameter_description"><p>maximum number of variants to retrieve after start_offset
 432 (IN) and actual number of variants retrieved (OUT)</p></td>
 433 <td class="parameter_annotations"> </td>
 434 </tr>
 435 <tr>
 436 <td class="parameter_name"><p>variants</p></td>
 437 <td class="parameter_description"><p>array of size at least <em class="parameter"><code>variants_count</code></em>
 438 to store the result</p></td>
 439 <td class="parameter_annotations"> </td>
 440 </tr>
 441 </tbody>
 442 </table></div>
 443 </div>
 444 <div class="refsect3">
 445 <a name="hb-ot-math-get-glyph-variants.returns"></a><h4>Returns</h4>
 446 <p> the total number of size variants available or 0</p>
 447 </div>
 448 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 449 </div>
 450 <hr>
 451 <div class="refsect2">
 452 <a name="hb-ot-math-get-min-connector-overlap"></a><h3>hb_ot_math_get_min_connector_overlap ()</h3>
 453 <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>
 454 hb_ot_math_get_min_connector_overlap (<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>,
 455                                       <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>);</pre>
 456 <p>This function tries to retrieve the MathVariants table for the specified
 457 font and returns the minimum overlap of connecting glyphs to draw a glyph
 458 assembly in the specified direction. Note that only the value of
 459 <a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-HORIZONTAL:CAPS" title="HB_DIRECTION_IS_HORIZONTAL()"><span class="type">HB_DIRECTION_IS_HORIZONTAL</span></a> is considered.</p>
 460 <div class="refsect3">
 461 <a name="hb-ot-math-get-min-connector-overlap.parameters"></a><h4>Parameters</h4>
 462 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 463 <colgroup>
 464 <col width="150px" class="parameters_name">
 465 <col class="parameters_description">
 466 <col width="200px" class="parameters_annotations">
 467 </colgroup>
 468 <tbody>
 469 <tr>
 470 <td class="parameter_name"><p>font</p></td>
 471 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the value</p></td>
 472 <td class="parameter_annotations"> </td>
 473 </tr>
 474 <tr>
 475 <td class="parameter_name"><p>direction</p></td>
 476 <td class="parameter_description"><p>direction of the stretching</p></td>
 477 <td class="parameter_annotations"> </td>
 478 </tr>
 479 </tbody>
 480 </table></div>
 481 </div>
 482 <div class="refsect3">
 483 <a name="hb-ot-math-get-min-connector-overlap.returns"></a><h4>Returns</h4>
 484 <p> requested min connector overlap or 0</p>
 485 </div>
 486 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 487 </div>
 488 <hr>
 489 <div class="refsect2">
 490 <a name="hb-ot-math-get-glyph-assembly"></a><h3>hb_ot_math_get_glyph_assembly ()</h3>
 491 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
 492 hb_ot_math_get_glyph_assembly (<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>,
 493                                <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>,
 494                                <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>,
 495                                <em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>,
 496                                <em class="parameter"><code>unsigned <span class="type">int</span> *parts_count</code></em>,
 497                                <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-part-t" title="hb_ot_math_glyph_part_t"><span class="type">hb_ot_math_glyph_part_t</span></a> *parts</code></em>,
 498                                <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> *italics_correction</code></em>);</pre>
 499 <p>This function tries to retrieve the GlyphAssembly for the specified font,
 500 glyph and direction. Note that only the value of <a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-IS-HORIZONTAL:CAPS" title="HB_DIRECTION_IS_HORIZONTAL()"><span class="type">HB_DIRECTION_IS_HORIZONTAL</span></a>
 501 is considered. It provides the information necessary to draw the glyph
 502 assembly as an array of <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-glyph-part-t" title="hb_ot_math_glyph_part_t"><span class="type">hb_ot_math_glyph_part_t</span></a>.</p>
 503 <div class="refsect3">
 504 <a name="hb-ot-math-get-glyph-assembly.parameters"></a><h4>Parameters</h4>
 505 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 506 <colgroup>
 507 <col width="150px" class="parameters_name">
 508 <col class="parameters_description">
 509 <col width="200px" class="parameters_annotations">
 510 </colgroup>
 511 <tbody>
 512 <tr>
 513 <td class="parameter_name"><p>font</p></td>
 514 <td class="parameter_description"><p><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> from which to retrieve the values</p></td>
 515 <td class="parameter_annotations"> </td>
 516 </tr>
 517 <tr>
 518 <td class="parameter_name"><p>glyph</p></td>
 519 <td class="parameter_description"><p>index of the glyph to stretch</p></td>
 520 <td class="parameter_annotations"> </td>
 521 </tr>
 522 <tr>
 523 <td class="parameter_name"><p>direction</p></td>
 524 <td class="parameter_description"><p>direction of the stretching</p></td>
 525 <td class="parameter_annotations"> </td>
 526 </tr>
 527 <tr>
 528 <td class="parameter_name"><p>start_offset</p></td>
 529 <td class="parameter_description"><p>offset of the first glyph part to retrieve</p></td>
 530 <td class="parameter_annotations"> </td>
 531 </tr>
 532 <tr>
 533 <td class="parameter_name"><p>parts_count</p></td>
 534 <td class="parameter_description"><p>maximum number of glyph parts to retrieve after start_offset
 535 (IN) and actual number of parts retrieved (OUT)</p></td>
 536 <td class="parameter_annotations"> </td>
 537 </tr>
 538 <tr>
 539 <td class="parameter_name"><p>parts</p></td>
 540 <td class="parameter_description"><p>array of size at least <em class="parameter"><code>parts_count</code></em>
 541 to store the result</p></td>
 542 <td class="parameter_annotations"> </td>
 543 </tr>
 544 <tr>
 545 <td class="parameter_name"><p>italics_correction</p></td>
 546 <td class="parameter_description"><p>italic correction of the glyph assembly</p></td>
 547 <td class="parameter_annotations"> </td>
 548 </tr>
 549 </tbody>
 550 </table></div>
 551 </div>
 552 <div class="refsect3">
 553 <a name="hb-ot-math-get-glyph-assembly.returns"></a><h4>Returns</h4>
 554 <p> the total number of parts in the glyph assembly</p>
 555 </div>
 556 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 557 </div>
 558 </div>
 559 <div class="refsect1">
 560 <a name="harfbuzz-hb-ot-math.other_details"></a><h2>Types and Values</h2>
 561 <div class="refsect2">
 562 <a name="HB-OT-TAG-MATH:CAPS"></a><h3>HB_OT_TAG_MATH</h3>
 563 <pre class="programlisting">#define HB_OT_TAG_MATH HB_TAG('M','A','T','H')
 564 </pre>
 565 </div>
 566 <hr>
 567 <div class="refsect2">
 568 <a name="HB-OT-MATH-SCRIPT:CAPS"></a><h3>HB_OT_MATH_SCRIPT</h3>
 569 <pre class="programlisting">#define HB_OT_MATH_SCRIPT HB_TAG('m','a','t','h')
 570 </pre>
 571 </div>
 572 <hr>
 573 <div class="refsect2">
 574 <a name="hb-ot-math-constant-t"></a><h3>enum hb_ot_math_constant_t</h3>
 575 <div class="refsect3">
 576 <a name="hb-ot-math-constant-t.members"></a><h4>Members</h4>
 577 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 578 <colgroup>
 579 <col width="300px" class="enum_members_name">
 580 <col class="enum_members_description">
 581 <col width="200px" class="enum_members_annotations">
 582 </colgroup>
 583 <tbody>
 584 <tr>
 585 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SCRIPT-PERCENT-SCALE-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN</p></td>
 586 <td> </td>
 587 <td> </td>
 588 </tr>
 589 <tr>
 590 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SCRIPT-SCRIPT-PERCENT-SCALE-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_SCRIPT_SCRIPT_PERCENT_SCALE_DOWN</p></td>
 591 <td> </td>
 592 <td> </td>
 593 </tr>
 594 <tr>
 595 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-DELIMITED-SUB-FORMULA-MIN-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_DELIMITED_SUB_FORMULA_MIN_HEIGHT</p></td>
 596 <td> </td>
 597 <td> </td>
 598 </tr>
 599 <tr>
 600 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-DISPLAY-OPERATOR-MIN-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_DISPLAY_OPERATOR_MIN_HEIGHT</p></td>
 601 <td> </td>
 602 <td> </td>
 603 </tr>
 604 <tr>
 605 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-MATH-LEADING:CAPS"></a>HB_OT_MATH_CONSTANT_MATH_LEADING</p></td>
 606 <td> </td>
 607 <td> </td>
 608 </tr>
 609 <tr>
 610 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-AXIS-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_AXIS_HEIGHT</p></td>
 611 <td> </td>
 612 <td> </td>
 613 </tr>
 614 <tr>
 615 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-ACCENT-BASE-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_ACCENT_BASE_HEIGHT</p></td>
 616 <td> </td>
 617 <td> </td>
 618 </tr>
 619 <tr>
 620 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FLATTENED-ACCENT-BASE-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_FLATTENED_ACCENT_BASE_HEIGHT</p></td>
 621 <td> </td>
 622 <td> </td>
 623 </tr>
 624 <tr>
 625 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUBSCRIPT-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_SUBSCRIPT_SHIFT_DOWN</p></td>
 626 <td> </td>
 627 <td> </td>
 628 </tr>
 629 <tr>
 630 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUBSCRIPT-TOP-MAX:CAPS"></a>HB_OT_MATH_CONSTANT_SUBSCRIPT_TOP_MAX</p></td>
 631 <td> </td>
 632 <td> </td>
 633 </tr>
 634 <tr>
 635 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUBSCRIPT-BASELINE-DROP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_SUBSCRIPT_BASELINE_DROP_MIN</p></td>
 636 <td> </td>
 637 <td> </td>
 638 </tr>
 639 <tr>
 640 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUPERSCRIPT-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_SUPERSCRIPT_SHIFT_UP</p></td>
 641 <td> </td>
 642 <td> </td>
 643 </tr>
 644 <tr>
 645 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUPERSCRIPT-SHIFT-UP-CRAMPED:CAPS"></a>HB_OT_MATH_CONSTANT_SUPERSCRIPT_SHIFT_UP_CRAMPED</p></td>
 646 <td> </td>
 647 <td> </td>
 648 </tr>
 649 <tr>
 650 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUPERSCRIPT-BOTTOM-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_SUPERSCRIPT_BOTTOM_MIN</p></td>
 651 <td> </td>
 652 <td> </td>
 653 </tr>
 654 <tr>
 655 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUPERSCRIPT-BASELINE-DROP-MAX:CAPS"></a>HB_OT_MATH_CONSTANT_SUPERSCRIPT_BASELINE_DROP_MAX</p></td>
 656 <td> </td>
 657 <td> </td>
 658 </tr>
 659 <tr>
 660 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUB-SUPERSCRIPT-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_SUB_SUPERSCRIPT_GAP_MIN</p></td>
 661 <td> </td>
 662 <td> </td>
 663 </tr>
 664 <tr>
 665 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SUPERSCRIPT-BOTTOM-MAX-WITH-SUBSCRIPT:CAPS"></a>HB_OT_MATH_CONSTANT_SUPERSCRIPT_BOTTOM_MAX_WITH_SUBSCRIPT</p></td>
 666 <td> </td>
 667 <td> </td>
 668 </tr>
 669 <tr>
 670 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SPACE-AFTER-SCRIPT:CAPS"></a>HB_OT_MATH_CONSTANT_SPACE_AFTER_SCRIPT</p></td>
 671 <td> </td>
 672 <td> </td>
 673 </tr>
 674 <tr>
 675 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-UPPER-LIMIT-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_UPPER_LIMIT_GAP_MIN</p></td>
 676 <td> </td>
 677 <td> </td>
 678 </tr>
 679 <tr>
 680 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-UPPER-LIMIT-BASELINE-RISE-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_UPPER_LIMIT_BASELINE_RISE_MIN</p></td>
 681 <td> </td>
 682 <td> </td>
 683 </tr>
 684 <tr>
 685 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-LOWER-LIMIT-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_LOWER_LIMIT_GAP_MIN</p></td>
 686 <td> </td>
 687 <td> </td>
 688 </tr>
 689 <tr>
 690 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-LOWER-LIMIT-BASELINE-DROP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_LOWER_LIMIT_BASELINE_DROP_MIN</p></td>
 691 <td> </td>
 692 <td> </td>
 693 </tr>
 694 <tr>
 695 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-TOP-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_TOP_SHIFT_UP</p></td>
 696 <td> </td>
 697 <td> </td>
 698 </tr>
 699 <tr>
 700 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-TOP-DISPLAY-STYLE-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_TOP_DISPLAY_STYLE_SHIFT_UP</p></td>
 701 <td> </td>
 702 <td> </td>
 703 </tr>
 704 <tr>
 705 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-BOTTOM-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_BOTTOM_SHIFT_DOWN</p></td>
 706 <td> </td>
 707 <td> </td>
 708 </tr>
 709 <tr>
 710 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-BOTTOM-DISPLAY-STYLE-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_BOTTOM_DISPLAY_STYLE_SHIFT_DOWN</p></td>
 711 <td> </td>
 712 <td> </td>
 713 </tr>
 714 <tr>
 715 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_GAP_MIN</p></td>
 716 <td> </td>
 717 <td> </td>
 718 </tr>
 719 <tr>
 720 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STACK-DISPLAY-STYLE-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_STACK_DISPLAY_STYLE_GAP_MIN</p></td>
 721 <td> </td>
 722 <td> </td>
 723 </tr>
 724 <tr>
 725 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STRETCH-STACK-TOP-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_STRETCH_STACK_TOP_SHIFT_UP</p></td>
 726 <td> </td>
 727 <td> </td>
 728 </tr>
 729 <tr>
 730 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STRETCH-STACK-BOTTOM-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_STRETCH_STACK_BOTTOM_SHIFT_DOWN</p></td>
 731 <td> </td>
 732 <td> </td>
 733 </tr>
 734 <tr>
 735 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STRETCH-STACK-GAP-ABOVE-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_STRETCH_STACK_GAP_ABOVE_MIN</p></td>
 736 <td> </td>
 737 <td> </td>
 738 </tr>
 739 <tr>
 740 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-STRETCH-STACK-GAP-BELOW-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_STRETCH_STACK_GAP_BELOW_MIN</p></td>
 741 <td> </td>
 742 <td> </td>
 743 </tr>
 744 <tr>
 745 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-NUMERATOR-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_NUMERATOR_SHIFT_UP</p></td>
 746 <td> </td>
 747 <td> </td>
 748 </tr>
 749 <tr>
 750 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-NUMERATOR-DISPLAY-STYLE-SHIFT-UP:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_NUMERATOR_DISPLAY_STYLE_SHIFT_UP</p></td>
 751 <td> </td>
 752 <td> </td>
 753 </tr>
 754 <tr>
 755 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-DENOMINATOR-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_DENOMINATOR_SHIFT_DOWN</p></td>
 756 <td> </td>
 757 <td> </td>
 758 </tr>
 759 <tr>
 760 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-DENOMINATOR-DISPLAY-STYLE-SHIFT-DOWN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_DENOMINATOR_DISPLAY_STYLE_SHIFT_DOWN</p></td>
 761 <td> </td>
 762 <td> </td>
 763 </tr>
 764 <tr>
 765 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-NUMERATOR-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_NUMERATOR_GAP_MIN</p></td>
 766 <td> </td>
 767 <td> </td>
 768 </tr>
 769 <tr>
 770 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-NUM-DISPLAY-STYLE-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_NUM_DISPLAY_STYLE_GAP_MIN</p></td>
 771 <td> </td>
 772 <td> </td>
 773 </tr>
 774 <tr>
 775 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-RULE-THICKNESS:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_RULE_THICKNESS</p></td>
 776 <td> </td>
 777 <td> </td>
 778 </tr>
 779 <tr>
 780 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-DENOMINATOR-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_DENOMINATOR_GAP_MIN</p></td>
 781 <td> </td>
 782 <td> </td>
 783 </tr>
 784 <tr>
 785 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-FRACTION-DENOM-DISPLAY-STYLE-GAP-MIN:CAPS"></a>HB_OT_MATH_CONSTANT_FRACTION_DENOM_DISPLAY_STYLE_GAP_MIN</p></td>
 786 <td> </td>
 787 <td> </td>
 788 </tr>
 789 <tr>
 790 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SKEWED-FRACTION-HORIZONTAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_SKEWED_FRACTION_HORIZONTAL_GAP</p></td>
 791 <td> </td>
 792 <td> </td>
 793 </tr>
 794 <tr>
 795 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-SKEWED-FRACTION-VERTICAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_SKEWED_FRACTION_VERTICAL_GAP</p></td>
 796 <td> </td>
 797 <td> </td>
 798 </tr>
 799 <tr>
 800 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-OVERBAR-VERTICAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_OVERBAR_VERTICAL_GAP</p></td>
 801 <td> </td>
 802 <td> </td>
 803 </tr>
 804 <tr>
 805 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-OVERBAR-RULE-THICKNESS:CAPS"></a>HB_OT_MATH_CONSTANT_OVERBAR_RULE_THICKNESS</p></td>
 806 <td> </td>
 807 <td> </td>
 808 </tr>
 809 <tr>
 810 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-OVERBAR-EXTRA-ASCENDER:CAPS"></a>HB_OT_MATH_CONSTANT_OVERBAR_EXTRA_ASCENDER</p></td>
 811 <td> </td>
 812 <td> </td>
 813 </tr>
 814 <tr>
 815 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-UNDERBAR-VERTICAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_UNDERBAR_VERTICAL_GAP</p></td>
 816 <td> </td>
 817 <td> </td>
 818 </tr>
 819 <tr>
 820 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-UNDERBAR-RULE-THICKNESS:CAPS"></a>HB_OT_MATH_CONSTANT_UNDERBAR_RULE_THICKNESS</p></td>
 821 <td> </td>
 822 <td> </td>
 823 </tr>
 824 <tr>
 825 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-UNDERBAR-EXTRA-DESCENDER:CAPS"></a>HB_OT_MATH_CONSTANT_UNDERBAR_EXTRA_DESCENDER</p></td>
 826 <td> </td>
 827 <td> </td>
 828 </tr>
 829 <tr>
 830 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-VERTICAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_VERTICAL_GAP</p></td>
 831 <td> </td>
 832 <td> </td>
 833 </tr>
 834 <tr>
 835 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-DISPLAY-STYLE-VERTICAL-GAP:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_DISPLAY_STYLE_VERTICAL_GAP</p></td>
 836 <td> </td>
 837 <td> </td>
 838 </tr>
 839 <tr>
 840 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-RULE-THICKNESS:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_RULE_THICKNESS</p></td>
 841 <td> </td>
 842 <td> </td>
 843 </tr>
 844 <tr>
 845 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-EXTRA-ASCENDER:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_EXTRA_ASCENDER</p></td>
 846 <td> </td>
 847 <td> </td>
 848 </tr>
 849 <tr>
 850 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-KERN-BEFORE-DEGREE:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_KERN_BEFORE_DEGREE</p></td>
 851 <td> </td>
 852 <td> </td>
 853 </tr>
 854 <tr>
 855 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-KERN-AFTER-DEGREE:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_KERN_AFTER_DEGREE</p></td>
 856 <td> </td>
 857 <td> </td>
 858 </tr>
 859 <tr>
 860 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-RADICAL-DEGREE-BOTTOM-RAISE-PERCENT:CAPS"></a>HB_OT_MATH_CONSTANT_RADICAL_DEGREE_BOTTOM_RAISE_PERCENT</p></td>
 861 <td> </td>
 862 <td> </td>
 863 </tr>
 864 </tbody>
 865 </table></div>
 866 </div>
 867 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 868 </div>
 869 <hr>
 870 <div class="refsect2">
 871 <a name="hb-ot-math-kern-t"></a><h3>enum hb_ot_math_kern_t</h3>
 872 <div class="refsect3">
 873 <a name="hb-ot-math-kern-t.members"></a><h4>Members</h4>
 874 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 875 <colgroup>
 876 <col width="300px" class="enum_members_name">
 877 <col class="enum_members_description">
 878 <col width="200px" class="enum_members_annotations">
 879 </colgroup>
 880 <tbody>
 881 <tr>
 882 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-TOP-RIGHT:CAPS"></a>HB_OT_MATH_KERN_TOP_RIGHT</p></td>
 883 <td> </td>
 884 <td> </td>
 885 </tr>
 886 <tr>
 887 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-TOP-LEFT:CAPS"></a>HB_OT_MATH_KERN_TOP_LEFT</p></td>
 888 <td> </td>
 889 <td> </td>
 890 </tr>
 891 <tr>
 892 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-BOTTOM-RIGHT:CAPS"></a>HB_OT_MATH_KERN_BOTTOM_RIGHT</p></td>
 893 <td> </td>
 894 <td> </td>
 895 </tr>
 896 <tr>
 897 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-BOTTOM-LEFT:CAPS"></a>HB_OT_MATH_KERN_BOTTOM_LEFT</p></td>
 898 <td> </td>
 899 <td> </td>
 900 </tr>
 901 </tbody>
 902 </table></div>
 903 </div>
 904 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 905 </div>
 906 <hr>
 907 <div class="refsect2">
 908 <a name="hb-ot-math-glyph-variant-t"></a><h3>hb_ot_math_glyph_variant_t</h3>
 909 <pre class="programlisting">typedef struct {
 910   hb_codepoint_t glyph;
 911   hb_position_t advance;
 912 } hb_ot_math_glyph_variant_t;
 913 </pre>
 914 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 915 </div>
 916 <hr>
 917 <div class="refsect2">
 918 <a name="hb-ot-math-glyph-part-flags-t"></a><h3>enum hb_ot_math_glyph_part_flags_t</h3>
 919 <div class="refsect3">
 920 <a name="hb-ot-math-glyph-part-flags-t.members"></a><h4>Members</h4>
 921 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 922 <colgroup>
 923 <col width="300px" class="enum_members_name">
 924 <col class="enum_members_description">
 925 <col width="200px" class="enum_members_annotations">
 926 </colgroup>
 927 <tbody><tr>
 928 <td class="enum_member_name"><p><a name="HB-MATH-GLYPH-PART-FLAG-EXTENDER:CAPS"></a>HB_MATH_GLYPH_PART_FLAG_EXTENDER</p></td>
 929 <td> </td>
 930 <td> </td>
 931 </tr></tbody>
 932 </table></div>
 933 </div>
 934 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 935 </div>
 936 <hr>
 937 <div class="refsect2">
 938 <a name="hb-ot-math-glyph-part-t"></a><h3>hb_ot_math_glyph_part_t</h3>
 939 <pre class="programlisting">typedef struct {
 940   hb_codepoint_t glyph;
 941   hb_position_t start_connector_length;
 942   hb_position_t end_connector_length;
 943   hb_position_t full_advance;
 944   hb_ot_math_glyph_part_flags_t flags;
 945 } hb_ot_math_glyph_part_t;
 946 </pre>
 947 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 948 </div>
 949 </div>
 950 </div>
 951 <div class="footer">
 952 <hr>Generated by GTK-Doc V1.29</div>
 953 </body>
 954 </html>