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  26 <a name="harfbuzz-hb-ot-math"></a><div class="titlepage"></div>
  27 <div class="refnamediv"><table width="100%"><tr>
  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_proto_type">
  39 <col class="functions_proto_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">unsigned <span class="returnvalue">int</span>
  84 </td>
  85 <td class="function_name">
  86 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-kernings" title="hb_ot_math_get_glyph_kernings ()">hb_ot_math_get_glyph_kernings</a> <span class="c_punctuation">()</span>
  87 </td>
  88 </tr>
  89 <tr>
  90 <td class="function_type">
  91 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
  92 </td>
  93 <td class="function_name">
  94 <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>
  95 </td>
  96 </tr>
  97 <tr>
  98 <td class="function_type">unsigned <span class="returnvalue">int</span>
  99 </td>
 100 <td class="function_name">
 101 <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>
 102 </td>
 103 </tr>
 104 <tr>
 105 <td class="function_type">
 106 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 107 </td>
 108 <td class="function_name">
 109 <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>
 110 </td>
 111 </tr>
 112 <tr>
 113 <td class="function_type">unsigned <span class="returnvalue">int</span>
 114 </td>
 115 <td class="function_name">
 116 <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>
 117 </td>
 118 </tr>
 119 </tbody>
 120 </table></div>
 121 </div>
 122 <div class="refsect1">
 123 <a name="harfbuzz-hb-ot-math.other"></a><h2>Types and Values</h2>
 124 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 125 <colgroup>
 126 <col width="150px" class="other_proto_type">
 127 <col class="other_proto_name">
 128 </colgroup>
 129 <tbody>
 130 <tr>
 131 <td class="define_keyword">#define</td>
 132 <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>
 133 </tr>
 134 <tr>
 135 <td class="define_keyword">#define</td>
 136 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-TAG-MATH-SCRIPT:CAPS" title="HB_OT_TAG_MATH_SCRIPT">HB_OT_TAG_MATH_SCRIPT</a></td>
 137 </tr>
 138 <tr>
 139 <td class="datatype_keyword">enum</td>
 140 <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>
 141 </tr>
 142 <tr>
 143 <td class="datatype_keyword">enum</td>
 144 <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>
 145 </tr>
 146 <tr>
 147 <td class="datatype_keyword"> </td>
 148 <td class="function_name"><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t" title="hb_ot_math_kern_entry_t">hb_ot_math_kern_entry_t</a></td>
 149 </tr>
 150 <tr>
 151 <td class="datatype_keyword"> </td>
 152 <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>
 153 </tr>
 154 <tr>
 155 <td class="datatype_keyword">enum</td>
 156 <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>
 157 </tr>
 158 <tr>
 159 <td class="datatype_keyword"> </td>
 160 <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>
 161 </tr>
 162 </tbody>
 163 </table></div>
 164 </div>
 165 <div class="refsect1">
 166 <a name="harfbuzz-hb-ot-math.includes"></a><h2>Includes</h2>
 167 <pre class="synopsis">#include &lt;hb-ot.h&gt;
 168 </pre>
 169 </div>
 170 <div class="refsect1">
 171 <a name="harfbuzz-hb-ot-math.description"></a><h2>Description</h2>
 172 <p>Functions for fetching mathematics layout data from OpenType fonts.</p>
 173 <p>HarfBuzz itself does not implement a math layout solution. The
 174 functions and types provided can be used by client programs to access
 175 the font data necessary for typesetting OpenType Math layout.</p>
 176 </div>
 177 <div class="refsect1">
 178 <a name="harfbuzz-hb-ot-math.functions_details"></a><h2>Functions</h2>
 179 <div class="refsect2">
 180 <a name="hb-ot-math-has-data"></a><h3>hb_ot_math_has_data ()</h3>
 181 <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>
 182 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>
 183 <p>Tests whether a face has a <code class="literal">MATH</code> table.</p>
 184 <div class="refsect3">
 185 <a name="hb-ot-math-has-data.parameters"></a><h4>Parameters</h4>
 186 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 187 <colgroup>
 188 <col width="150px" class="parameters_name">
 189 <col class="parameters_description">
 190 <col width="200px" class="parameters_annotations">
 191 </colgroup>
 192 <tbody><tr>
 193 <td class="parameter_name"><p>face</p></td>
 194 <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>
 195 <td class="parameter_annotations"> </td>
 196 </tr></tbody>
 197 </table></div>
 198 </div>
 199 <div class="refsect3">
 200 <a name="hb-ot-math-has-data.returns"></a><h4>Returns</h4>
 201 <p> <code class="literal">true</code> if the table is found, <code class="literal">false</code> otherwise</p>
 202 </div>
 203 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 204 </div>
 205 <hr>
 206 <div class="refsect2">
 207 <a name="hb-ot-math-get-constant"></a><h3>hb_ot_math_get_constant ()</h3>
 208 <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>
 209 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>,
 210                          <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>
 211 <p>Fetches the specified math constant. For most constants, the value returned
 212 is an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a>.</p>
 213 <p>However, if the requested constant is <a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-MATH-CONSTANT-SCRIPT-PERCENT-SCALE-DOWN:CAPS"><span class="type">HB_OT_MATH_CONSTANT_SCRIPT_PERCENT_SCALE_DOWN</span></a>,
 214 <a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-MATH-CONSTANT-SCRIPT-SCRIPT-PERCENT-SCALE-DOWN:CAPS"><span class="type">HB_OT_MATH_CONSTANT_SCRIPT_SCRIPT_PERCENT_SCALE_DOWN</span></a> or
 215 <a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-MATH-CONSTANT-RADICAL-DEGREE-BOTTOM-RAISE-PERCENT:CAPS"><span class="type">HB_OT_MATH_CONSTANT_RADICAL_DEGREE_BOTTOM_RAISE_PERCENT</span></a>, then the return value is
 216 an integer between 0 and 100 representing that percentage.</p>
 217 <div class="refsect3">
 218 <a name="hb-ot-math-get-constant.parameters"></a><h4>Parameters</h4>
 219 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 220 <colgroup>
 221 <col width="150px" class="parameters_name">
 222 <col class="parameters_description">
 223 <col width="200px" class="parameters_annotations">
 224 </colgroup>
 225 <tbody>
 226 <tr>
 227 <td class="parameter_name"><p>font</p></td>
 228 <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> to work upon</p></td>
 229 <td class="parameter_annotations"> </td>
 230 </tr>
 231 <tr>
 232 <td class="parameter_name"><p>constant</p></td>
 233 <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>
 234 <td class="parameter_annotations"> </td>
 235 </tr>
 236 </tbody>
 237 </table></div>
 238 </div>
 239 <div class="refsect3">
 240 <a name="hb-ot-math-get-constant.returns"></a><h4>Returns</h4>
 241 <p> the requested constant or zero</p>
 242 </div>
 243 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 244 </div>
 245 <hr>
 246 <div class="refsect2">
 247 <a name="hb-ot-math-get-glyph-italics-correction"></a><h3>hb_ot_math_get_glyph_italics_correction ()</h3>
 248 <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>
 249 hb_ot_math_get_glyph_italics_correction
 250                                (<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>,
 251                                 <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>
 252 <p>Fetches an italics-correction value (if one exists) for the specified
 253 glyph index.</p>
 254 <div class="refsect3">
 255 <a name="hb-ot-math-get-glyph-italics-correction.parameters"></a><h4>Parameters</h4>
 256 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 257 <colgroup>
 258 <col width="150px" class="parameters_name">
 259 <col class="parameters_description">
 260 <col width="200px" class="parameters_annotations">
 261 </colgroup>
 262 <tbody>
 263 <tr>
 264 <td class="parameter_name"><p>font</p></td>
 265 <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> to work upon</p></td>
 266 <td class="parameter_annotations"> </td>
 267 </tr>
 268 <tr>
 269 <td class="parameter_name"><p>glyph</p></td>
 270 <td class="parameter_description"><p>The glyph index from which to retrieve the value</p></td>
 271 <td class="parameter_annotations"> </td>
 272 </tr>
 273 </tbody>
 274 </table></div>
 275 </div>
 276 <div class="refsect3">
 277 <a name="hb-ot-math-get-glyph-italics-correction.returns"></a><h4>Returns</h4>
 278 <p> the italics correction of the glyph or zero</p>
 279 </div>
 280 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 281 </div>
 282 <hr>
 283 <div class="refsect2">
 284 <a name="hb-ot-math-get-glyph-top-accent-attachment"></a><h3>hb_ot_math_get_glyph_top_accent_attachment ()</h3>
 285 <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>
 286 hb_ot_math_get_glyph_top_accent_attachment
 287                                (<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>,
 288                                 <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>
 289 <p>Fetches a top-accent-attachment value (if one exists) for the specified
 290 glyph index.</p>
 291 <p>For any glyph that does not have a top-accent-attachment value - that is,
 292 a glyph not covered by the <code class="literal">MathTopAccentAttachment</code> table (or, when
 293 <em class="parameter"><code>font</code></em>
 294  has no <code class="literal">MathTopAccentAttachment</code> table or no <code class="literal">MATH</code> table, any
 295 glyph) - the function synthesizes a value, returning the position at
 296 one-half the glyph's advance width.</p>
 297 <div class="refsect3">
 298 <a name="hb-ot-math-get-glyph-top-accent-attachment.parameters"></a><h4>Parameters</h4>
 299 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 300 <colgroup>
 301 <col width="150px" class="parameters_name">
 302 <col class="parameters_description">
 303 <col width="200px" class="parameters_annotations">
 304 </colgroup>
 305 <tbody>
 306 <tr>
 307 <td class="parameter_name"><p>font</p></td>
 308 <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> to work upon</p></td>
 309 <td class="parameter_annotations"> </td>
 310 </tr>
 311 <tr>
 312 <td class="parameter_name"><p>glyph</p></td>
 313 <td class="parameter_description"><p>The glyph index from which to retrieve the value</p></td>
 314 <td class="parameter_annotations"> </td>
 315 </tr>
 316 </tbody>
 317 </table></div>
 318 </div>
 319 <div class="refsect3">
 320 <a name="hb-ot-math-get-glyph-top-accent-attachment.returns"></a><h4>Returns</h4>
 321 <p> the top accent attachment of the glyph or 0.5 * the advance
 322 width of <em class="parameter"><code>glyph</code></em>
 323 </p>
 324 </div>
 325 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 326 </div>
 327 <hr>
 328 <div class="refsect2">
 329 <a name="hb-ot-math-get-glyph-kerning"></a><h3>hb_ot_math_get_glyph_kerning ()</h3>
 330 <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>
 331 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>,
 332                               <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>,
 333                               <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>,
 334                               <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>
 335 <p>Fetches the math kerning (cut-ins) value for the specified font, glyph index, and
 336 <em class="parameter"><code>kern</code></em>
 337 . </p>
 338 <p>If the MathKern table is found, the function examines it to find a height
 339 value that is greater or equal to <em class="parameter"><code>correction_height</code></em>
 340 . If such a height
 341 value is found, corresponding kerning value from the table is returned. If
 342 no such height value is found, the last kerning value is returned.</p>
 343 <div class="refsect3">
 344 <a name="hb-ot-math-get-glyph-kerning.parameters"></a><h4>Parameters</h4>
 345 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 346 <colgroup>
 347 <col width="150px" class="parameters_name">
 348 <col class="parameters_description">
 349 <col width="200px" class="parameters_annotations">
 350 </colgroup>
 351 <tbody>
 352 <tr>
 353 <td class="parameter_name"><p>font</p></td>
 354 <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> to work upon</p></td>
 355 <td class="parameter_annotations"> </td>
 356 </tr>
 357 <tr>
 358 <td class="parameter_name"><p>glyph</p></td>
 359 <td class="parameter_description"><p>The glyph index from which to retrieve the value</p></td>
 360 <td class="parameter_annotations"> </td>
 361 </tr>
 362 <tr>
 363 <td class="parameter_name"><p>kern</p></td>
 364 <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>
 365 <td class="parameter_annotations"> </td>
 366 </tr>
 367 <tr>
 368 <td class="parameter_name"><p>correction_height</p></td>
 369 <td class="parameter_description"><p>the correction height to use to determine the kerning.</p></td>
 370 <td class="parameter_annotations"> </td>
 371 </tr>
 372 </tbody>
 373 </table></div>
 374 </div>
 375 <div class="refsect3">
 376 <a name="hb-ot-math-get-glyph-kerning.returns"></a><h4>Returns</h4>
 377 <p> requested kerning value or zero</p>
 378 </div>
 379 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 380 </div>
 381 <hr>
 382 <div class="refsect2">
 383 <a name="hb-ot-math-get-glyph-kernings"></a><h3>hb_ot_math_get_glyph_kernings ()</h3>
 384 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
 385 hb_ot_math_get_glyph_kernings (<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>,
 386                                <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>,
 387                                <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>,
 388                                <em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>,
 389                                <em class="parameter"><code>unsigned <span class="type">int</span> *entries_count</code></em>,
 390                                <em class="parameter"><code><a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t" title="hb_ot_math_kern_entry_t"><span class="type">hb_ot_math_kern_entry_t</span></a> *kern_entries</code></em>);</pre>
 391 <p>Fetches the raw MathKern (cut-in) data for the specified font, glyph index,
 392 and <em class="parameter"><code>kern</code></em>
 393 . The corresponding list of kern values and correction heights is
 394 returned as a list of <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t" title="hb_ot_math_kern_entry_t"><span class="type">hb_ot_math_kern_entry_t</span></a> structs.</p>
 395 <p>See also <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-get-glyph-kerning" title="hb_ot_math_get_glyph_kerning ()"><span class="type">hb_ot_math_get_glyph_kerning</span></a>, which handles selecting the
 396 appropriate kern value for a given correction height.</p>
 397 <div class="note">For a glyph with <em class="parameter"><code>n</code></em> defined kern values (where <em class="parameter"><code>n</code></em> &gt; 0), there are only
 398 <em class="parameter"><code>n</code></em>−1 defined correction heights, as each correction height defines a boundary
 399 past which the next kern value should be selected. Therefore, only the
 400 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t.kern-value"><span class="type">hb_ot_math_kern_entry_t.kern_value</span></a> of the uppermost <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t" title="hb_ot_math_kern_entry_t"><span class="type">hb_ot_math_kern_entry_t</span></a>
 401 actually comes from the font; its corresponding
 402 <a class="link" href="harfbuzz-hb-ot-math.html#hb-ot-math-kern-entry-t.max-correction-height"><span class="type">hb_ot_math_kern_entry_t.max_correction_height</span></a> is always set to
 403 <code class="code">INT32_MAX</code>.</div>
 404 <div class="refsect3">
 405 <a name="hb-ot-math-get-glyph-kernings.parameters"></a><h4>Parameters</h4>
 406 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 407 <colgroup>
 408 <col width="150px" class="parameters_name">
 409 <col class="parameters_description">
 410 <col width="200px" class="parameters_annotations">
 411 </colgroup>
 412 <tbody>
 413 <tr>
 414 <td class="parameter_name"><p>font</p></td>
 415 <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> to work upon</p></td>
 416 <td class="parameter_annotations"> </td>
 417 </tr>
 418 <tr>
 419 <td class="parameter_name"><p>glyph</p></td>
 420 <td class="parameter_description"><p>The glyph index from which to retrieve the kernings</p></td>
 421 <td class="parameter_annotations"> </td>
 422 </tr>
 423 <tr>
 424 <td class="parameter_name"><p>kern</p></td>
 425 <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 kernings</p></td>
 426 <td class="parameter_annotations"> </td>
 427 </tr>
 428 <tr>
 429 <td class="parameter_name"><p>start_offset</p></td>
 430 <td class="parameter_description"><p>offset of the first kern entry to retrieve</p></td>
 431 <td class="parameter_annotations"> </td>
 432 </tr>
 433 <tr>
 434 <td class="parameter_name"><p>entries_count</p></td>
 435 <td class="parameter_description"><p>Input = the maximum number of kern entries to return;
 436 Output = the actual number of kern entries returned. </p></td>
 437 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>][<acronym title="NULL may be passed instead of a pointer to a location."><span class="acronym">optional</span></acronym>]</span></td>
 438 </tr>
 439 <tr>
 440 <td class="parameter_name"><p>kern_entries</p></td>
 441 <td class="parameter_description"><p>array of kern entries returned. </p></td>
 442 <td class="parameter_annotations"><span class="annotation">[<acronym title="Out parameter, where caller must allocate storage."><span class="acronym">out caller-allocates</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=entries_count]</span></td>
 443 </tr>
 444 </tbody>
 445 </table></div>
 446 </div>
 447 <div class="refsect3">
 448 <a name="hb-ot-math-get-glyph-kernings.returns"></a><h4>Returns</h4>
 449 <p> the total number of kern values available or zero</p>
 450 </div>
 451 <p class="since">Since: <a class="link" href="api-index-3-4-0.html#api-index-3.4.0">3.4.0</a></p>
 452 </div>
 453 <hr>
 454 <div class="refsect2">
 455 <a name="hb-ot-math-is-glyph-extended-shape"></a><h3>hb_ot_math_is_glyph_extended_shape ()</h3>
 456 <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>
 457 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>,
 458                                     <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>
 459 <p>Tests whether the given glyph index is an extended shape in the face.</p>
 460 <div class="refsect3">
 461 <a name="hb-ot-math-is-glyph-extended-shape.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>face</p></td>
 471 <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>
 472 <td class="parameter_annotations"> </td>
 473 </tr>
 474 <tr>
 475 <td class="parameter_name"><p>glyph</p></td>
 476 <td class="parameter_description"><p>The glyph index to test</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-is-glyph-extended-shape.returns"></a><h4>Returns</h4>
 484 <p> <code class="literal">true</code> if the glyph is an extended shape, <code class="literal">false</code> otherwise</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-variants"></a><h3>hb_ot_math_get_glyph_variants ()</h3>
 491 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
 492 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>,
 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> *variants_count</code></em>,
 497                                <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>
 498 <p>Fetches the MathGlyphConstruction for the specified font, glyph index, and
 499 direction. The corresponding list of size variants is returned as a list of
 500 <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> structs.</p>
 501 <div class="note">The <em class="parameter"><code>direction</code></em> parameter is only used to select between horizontal
 502 or vertical directions for the construction. Even though all <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a>
 503 values are accepted, only the result 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> is
 504 considered.</div>
 505 <div class="refsect3">
 506 <a name="hb-ot-math-get-glyph-variants.parameters"></a><h4>Parameters</h4>
 507 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 508 <colgroup>
 509 <col width="150px" class="parameters_name">
 510 <col class="parameters_description">
 511 <col width="200px" class="parameters_annotations">
 512 </colgroup>
 513 <tbody>
 514 <tr>
 515 <td class="parameter_name"><p>font</p></td>
 516 <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> to work upon</p></td>
 517 <td class="parameter_annotations"> </td>
 518 </tr>
 519 <tr>
 520 <td class="parameter_name"><p>glyph</p></td>
 521 <td class="parameter_description"><p>The index of the glyph to stretch</p></td>
 522 <td class="parameter_annotations"> </td>
 523 </tr>
 524 <tr>
 525 <td class="parameter_name"><p>direction</p></td>
 526 <td class="parameter_description"><p>The direction of the stretching (horizontal or vertical)</p></td>
 527 <td class="parameter_annotations"> </td>
 528 </tr>
 529 <tr>
 530 <td class="parameter_name"><p>start_offset</p></td>
 531 <td class="parameter_description"><p>offset of the first variant to retrieve</p></td>
 532 <td class="parameter_annotations"> </td>
 533 </tr>
 534 <tr>
 535 <td class="parameter_name"><p>variants_count</p></td>
 536 <td class="parameter_description"><p>Input = the maximum number of variants to return;
 537 Output = the actual number of variants returned. </p></td>
 538 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td>
 539 </tr>
 540 <tr>
 541 <td class="parameter_name"><p>variants</p></td>
 542 <td class="parameter_description"><p>array of variants returned. </p></td>
 543 <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="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=variants_count]</span></td>
 544 </tr>
 545 </tbody>
 546 </table></div>
 547 </div>
 548 <div class="refsect3">
 549 <a name="hb-ot-math-get-glyph-variants.returns"></a><h4>Returns</h4>
 550 <p> the total number of size variants available or zero</p>
 551 </div>
 552 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 553 </div>
 554 <hr>
 555 <div class="refsect2">
 556 <a name="hb-ot-math-get-min-connector-overlap"></a><h3>hb_ot_math_get_min_connector_overlap ()</h3>
 557 <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>
 558 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>,
 559                                       <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>
 560 <p>Fetches the MathVariants table for the specified font and returns the
 561 minimum overlap of connecting glyphs that are required to draw a glyph
 562 assembly in the specified direction.</p>
 563 <div class="note">The <em class="parameter"><code>direction</code></em> parameter is only used to select between horizontal
 564 or vertical directions for the construction. Even though all <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a>
 565 values are accepted, only the result 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> is
 566 considered.</div>
 567 <div class="refsect3">
 568 <a name="hb-ot-math-get-min-connector-overlap.parameters"></a><h4>Parameters</h4>
 569 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 570 <colgroup>
 571 <col width="150px" class="parameters_name">
 572 <col class="parameters_description">
 573 <col width="200px" class="parameters_annotations">
 574 </colgroup>
 575 <tbody>
 576 <tr>
 577 <td class="parameter_name"><p>font</p></td>
 578 <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> to work upon</p></td>
 579 <td class="parameter_annotations"> </td>
 580 </tr>
 581 <tr>
 582 <td class="parameter_name"><p>direction</p></td>
 583 <td class="parameter_description"><p>direction of the stretching (horizontal or vertical)</p></td>
 584 <td class="parameter_annotations"> </td>
 585 </tr>
 586 </tbody>
 587 </table></div>
 588 </div>
 589 <div class="refsect3">
 590 <a name="hb-ot-math-get-min-connector-overlap.returns"></a><h4>Returns</h4>
 591 <p> requested minimum connector overlap or zero</p>
 592 </div>
 593 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 594 </div>
 595 <hr>
 596 <div class="refsect2">
 597 <a name="hb-ot-math-get-glyph-assembly"></a><h3>hb_ot_math_get_glyph_assembly ()</h3>
 598 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
 599 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>,
 600                                <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>,
 601                                <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>,
 602                                <em class="parameter"><code>unsigned <span class="type">int</span> start_offset</code></em>,
 603                                <em class="parameter"><code>unsigned <span class="type">int</span> *parts_count</code></em>,
 604                                <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>,
 605                                <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>
 606 <p>Fetches the GlyphAssembly for the specified font, glyph index, and direction.
 607 Returned are a list 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> glyph parts that can be
 608 used to draw the glyph and an italics-correction value (if one is defined
 609 in the font).</p>
 610 <div class="note">The <em class="parameter"><code>direction</code></em> parameter is only used to select between horizontal
 611 or vertical directions for the construction. Even though all <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a>
 612 values are accepted, only the result 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> is
 613 considered.</div>
 614 <div class="refsect3">
 615 <a name="hb-ot-math-get-glyph-assembly.parameters"></a><h4>Parameters</h4>
 616 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 617 <colgroup>
 618 <col width="150px" class="parameters_name">
 619 <col class="parameters_description">
 620 <col width="200px" class="parameters_annotations">
 621 </colgroup>
 622 <tbody>
 623 <tr>
 624 <td class="parameter_name"><p>font</p></td>
 625 <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> to work upon</p></td>
 626 <td class="parameter_annotations"> </td>
 627 </tr>
 628 <tr>
 629 <td class="parameter_name"><p>glyph</p></td>
 630 <td class="parameter_description"><p>The index of the glyph to stretch</p></td>
 631 <td class="parameter_annotations"> </td>
 632 </tr>
 633 <tr>
 634 <td class="parameter_name"><p>direction</p></td>
 635 <td class="parameter_description"><p>direction of the stretching (horizontal or vertical)</p></td>
 636 <td class="parameter_annotations"> </td>
 637 </tr>
 638 <tr>
 639 <td class="parameter_name"><p>start_offset</p></td>
 640 <td class="parameter_description"><p>offset of the first glyph part to retrieve</p></td>
 641 <td class="parameter_annotations"> </td>
 642 </tr>
 643 <tr>
 644 <td class="parameter_name"><p>parts_count</p></td>
 645 <td class="parameter_description"><p>Input = maximum number of glyph parts to return;
 646 Output = actual number of parts returned. </p></td>
 647 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for input and for returning results. Default is transfer full."><span class="acronym">inout</span></acronym>]</span></td>
 648 </tr>
 649 <tr>
 650 <td class="parameter_name"><p>parts</p></td>
 651 <td class="parameter_description"><p>the glyph parts returned. </p></td>
 652 <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="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=parts_count]</span></td>
 653 </tr>
 654 <tr>
 655 <td class="parameter_name"><p>italics_correction</p></td>
 656 <td class="parameter_description"><p>italics correction of the glyph assembly. </p></td>
 657 <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>
 658 </tr>
 659 </tbody>
 660 </table></div>
 661 </div>
 662 <div class="refsect3">
 663 <a name="hb-ot-math-get-glyph-assembly.returns"></a><h4>Returns</h4>
 664 <p> the total number of parts in the glyph assembly</p>
 665 </div>
 666 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 667 </div>
 668 </div>
 669 <div class="refsect1">
 670 <a name="harfbuzz-hb-ot-math.other_details"></a><h2>Types and Values</h2>
 671 <div class="refsect2">
 672 <a name="HB-OT-TAG-MATH:CAPS"></a><h3>HB_OT_TAG_MATH</h3>
 673 <pre class="programlisting">#define HB_OT_TAG_MATH HB_TAG('M','A','T','H')
 674 </pre>
 675 <p>OpenType <a class="ulink" href="https://docs.microsoft.com/en-us/typography/opentype/spec/math" target="_top">Mathematical Typesetting Table</a>.</p>
 676 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
 677 </div>
 678 <hr>
 679 <div class="refsect2">
 680 <a name="HB-OT-TAG-MATH-SCRIPT:CAPS"></a><h3>HB_OT_TAG_MATH_SCRIPT</h3>
 681 <pre class="programlisting">#define HB_OT_TAG_MATH_SCRIPT HB_TAG('m','a','t','h')
 682 </pre>
 683 <p>OpenType script tag, <code class="literal">math</code>, for features specific to math shaping.</p>
 684 <div class="note">
 685 <a class="link" href="harfbuzz-hb-ot-math.html#HB-OT-TAG-MATH-SCRIPT:CAPS" title="HB_OT_TAG_MATH_SCRIPT"><span class="type">HB_OT_TAG_MATH_SCRIPT</span></a> is not a valid <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 should only be
 686 used with functions that accept raw OpenType script tags, such as
 687 <a class="link" href="harfbuzz-hb-ot-layout.html#hb-ot-layout-collect-features" title="hb_ot_layout_collect_features ()"><span class="type">hb_ot_layout_collect_features</span></a>. In other cases, <a class="link" href="harfbuzz-hb-common.html#HB-SCRIPT-MATH:CAPS"><span class="type">HB_SCRIPT_MATH</span></a> should be
 688 used instead.</div>
 689 <p class="since">Since: <a class="link" href="api-index-3-4-0.html#api-index-3.4.0">3.4.0</a></p>
 690 </div>
 691 <hr>
 692 <div class="refsect2">
 693 <a name="hb-ot-math-constant-t"></a><h3>enum hb_ot_math_constant_t</h3>
 694 <p>The 'MATH' table constants, refer to
 695 <a class="ulink" href="https://docs.microsoft.com/en-us/typography/opentype/spec/math#mathconstants-table" target="_top">OpenType documentation</a>
 696 For more explanations.</p>
 697 <div class="refsect3">
 698 <a name="hb-ot-math-constant-t.members"></a><h4>Members</h4>
 699 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 700 <colgroup>
 701 <col width="300px" class="enum_members_name">
 702 <col class="enum_members_description">
 703 <col width="200px" class="enum_members_annotations">
 704 </colgroup>
 705 <tbody>
 706 <tr>
 707 <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>
 708 <td class="enum_member_description">
 709 <p>scriptPercentScaleDown</p>
 710 </td>
 711 <td class="enum_member_annotations"> </td>
 712 </tr>
 713 <tr>
 714 <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>
 715 <td class="enum_member_description">
 716 <p>scriptScriptPercentScaleDown</p>
 717 </td>
 718 <td class="enum_member_annotations"> </td>
 719 </tr>
 720 <tr>
 721 <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>
 722 <td class="enum_member_description">
 723 <p>delimitedSubFormulaMinHeight</p>
 724 </td>
 725 <td class="enum_member_annotations"> </td>
 726 </tr>
 727 <tr>
 728 <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>
 729 <td class="enum_member_description">
 730 <p>displayOperatorMinHeight</p>
 731 </td>
 732 <td class="enum_member_annotations"> </td>
 733 </tr>
 734 <tr>
 735 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-MATH-LEADING:CAPS"></a>HB_OT_MATH_CONSTANT_MATH_LEADING</p></td>
 736 <td class="enum_member_description">
 737 <p>mathLeading</p>
 738 </td>
 739 <td class="enum_member_annotations"> </td>
 740 </tr>
 741 <tr>
 742 <td class="enum_member_name"><p><a name="HB-OT-MATH-CONSTANT-AXIS-HEIGHT:CAPS"></a>HB_OT_MATH_CONSTANT_AXIS_HEIGHT</p></td>
 743 <td class="enum_member_description">
 744 <p>axisHeight</p>
 745 </td>
 746 <td class="enum_member_annotations"> </td>
 747 </tr>
 748 <tr>
 749 <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>
 750 <td class="enum_member_description">
 751 <p>accentBaseHeight</p>
 752 </td>
 753 <td class="enum_member_annotations"> </td>
 754 </tr>
 755 <tr>
 756 <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>
 757 <td class="enum_member_description">
 758 <p>flattenedAccentBaseHeight</p>
 759 </td>
 760 <td class="enum_member_annotations"> </td>
 761 </tr>
 762 <tr>
 763 <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>
 764 <td class="enum_member_description">
 765 <p>subscriptShiftDown</p>
 766 </td>
 767 <td class="enum_member_annotations"> </td>
 768 </tr>
 769 <tr>
 770 <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>
 771 <td class="enum_member_description">
 772 <p>subscriptTopMax</p>
 773 </td>
 774 <td class="enum_member_annotations"> </td>
 775 </tr>
 776 <tr>
 777 <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>
 778 <td class="enum_member_description">
 779 <p>subscriptBaselineDropMin</p>
 780 </td>
 781 <td class="enum_member_annotations"> </td>
 782 </tr>
 783 <tr>
 784 <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>
 785 <td class="enum_member_description">
 786 <p>superscriptShiftUp</p>
 787 </td>
 788 <td class="enum_member_annotations"> </td>
 789 </tr>
 790 <tr>
 791 <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>
 792 <td class="enum_member_description">
 793 <p>superscriptShiftUpCramped</p>
 794 </td>
 795 <td class="enum_member_annotations"> </td>
 796 </tr>
 797 <tr>
 798 <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>
 799 <td class="enum_member_description">
 800 <p>superscriptBottomMin</p>
 801 </td>
 802 <td class="enum_member_annotations"> </td>
 803 </tr>
 804 <tr>
 805 <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>
 806 <td class="enum_member_description">
 807 <p>superscriptBaselineDropMax</p>
 808 </td>
 809 <td class="enum_member_annotations"> </td>
 810 </tr>
 811 <tr>
 812 <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>
 813 <td class="enum_member_description">
 814 <p>subSuperscriptGapMin</p>
 815 </td>
 816 <td class="enum_member_annotations"> </td>
 817 </tr>
 818 <tr>
 819 <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>
 820 <td class="enum_member_description">
 821 <p>superscriptBottomMaxWithSubscript</p>
 822 </td>
 823 <td class="enum_member_annotations"> </td>
 824 </tr>
 825 <tr>
 826 <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>
 827 <td class="enum_member_description">
 828 <p>spaceAfterScript</p>
 829 </td>
 830 <td class="enum_member_annotations"> </td>
 831 </tr>
 832 <tr>
 833 <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>
 834 <td class="enum_member_description">
 835 <p>upperLimitGapMin</p>
 836 </td>
 837 <td class="enum_member_annotations"> </td>
 838 </tr>
 839 <tr>
 840 <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>
 841 <td class="enum_member_description">
 842 <p>upperLimitBaselineRiseMin</p>
 843 </td>
 844 <td class="enum_member_annotations"> </td>
 845 </tr>
 846 <tr>
 847 <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>
 848 <td class="enum_member_description">
 849 <p>lowerLimitGapMin</p>
 850 </td>
 851 <td class="enum_member_annotations"> </td>
 852 </tr>
 853 <tr>
 854 <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>
 855 <td class="enum_member_description">
 856 <p>lowerLimitBaselineDropMin</p>
 857 </td>
 858 <td class="enum_member_annotations"> </td>
 859 </tr>
 860 <tr>
 861 <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>
 862 <td class="enum_member_description">
 863 <p>stackTopShiftUp</p>
 864 </td>
 865 <td class="enum_member_annotations"> </td>
 866 </tr>
 867 <tr>
 868 <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>
 869 <td class="enum_member_description">
 870 <p>stackTopDisplayStyleShiftUp</p>
 871 </td>
 872 <td class="enum_member_annotations"> </td>
 873 </tr>
 874 <tr>
 875 <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>
 876 <td class="enum_member_description">
 877 <p>stackBottomShiftDown</p>
 878 </td>
 879 <td class="enum_member_annotations"> </td>
 880 </tr>
 881 <tr>
 882 <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>
 883 <td class="enum_member_description">
 884 <p>stackBottomDisplayStyleShiftDown</p>
 885 </td>
 886 <td class="enum_member_annotations"> </td>
 887 </tr>
 888 <tr>
 889 <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>
 890 <td class="enum_member_description">
 891 <p>stackGapMin</p>
 892 </td>
 893 <td class="enum_member_annotations"> </td>
 894 </tr>
 895 <tr>
 896 <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>
 897 <td class="enum_member_description">
 898 <p>stackDisplayStyleGapMin</p>
 899 </td>
 900 <td class="enum_member_annotations"> </td>
 901 </tr>
 902 <tr>
 903 <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>
 904 <td class="enum_member_description">
 905 <p>stretchStackTopShiftUp</p>
 906 </td>
 907 <td class="enum_member_annotations"> </td>
 908 </tr>
 909 <tr>
 910 <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>
 911 <td class="enum_member_description">
 912 <p>stretchStackBottomShiftDown</p>
 913 </td>
 914 <td class="enum_member_annotations"> </td>
 915 </tr>
 916 <tr>
 917 <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>
 918 <td class="enum_member_description">
 919 <p>stretchStackGapAboveMin</p>
 920 </td>
 921 <td class="enum_member_annotations"> </td>
 922 </tr>
 923 <tr>
 924 <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>
 925 <td class="enum_member_description">
 926 <p>stretchStackGapBelowMin</p>
 927 </td>
 928 <td class="enum_member_annotations"> </td>
 929 </tr>
 930 <tr>
 931 <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>
 932 <td class="enum_member_description">
 933 <p>fractionNumeratorShiftUp</p>
 934 </td>
 935 <td class="enum_member_annotations"> </td>
 936 </tr>
 937 <tr>
 938 <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>
 939 <td class="enum_member_description">
 940 <p>fractionNumeratorDisplayStyleShiftUp</p>
 941 </td>
 942 <td class="enum_member_annotations"> </td>
 943 </tr>
 944 <tr>
 945 <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>
 946 <td class="enum_member_description">
 947 <p>fractionDenominatorShiftDown</p>
 948 </td>
 949 <td class="enum_member_annotations"> </td>
 950 </tr>
 951 <tr>
 952 <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>
 953 <td class="enum_member_description">
 954 <p>fractionDenominatorDisplayStyleShiftDown</p>
 955 </td>
 956 <td class="enum_member_annotations"> </td>
 957 </tr>
 958 <tr>
 959 <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>
 960 <td class="enum_member_description">
 961 <p>fractionNumeratorGapMin</p>
 962 </td>
 963 <td class="enum_member_annotations"> </td>
 964 </tr>
 965 <tr>
 966 <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>
 967 <td class="enum_member_description">
 968 <p>fractionNumDisplayStyleGapMin</p>
 969 </td>
 970 <td class="enum_member_annotations"> </td>
 971 </tr>
 972 <tr>
 973 <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>
 974 <td class="enum_member_description">
 975 <p>fractionRuleThickness</p>
 976 </td>
 977 <td class="enum_member_annotations"> </td>
 978 </tr>
 979 <tr>
 980 <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>
 981 <td class="enum_member_description">
 982 <p>fractionDenominatorGapMin</p>
 983 </td>
 984 <td class="enum_member_annotations"> </td>
 985 </tr>
 986 <tr>
 987 <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>
 988 <td class="enum_member_description">
 989 <p>fractionDenomDisplayStyleGapMin</p>
 990 </td>
 991 <td class="enum_member_annotations"> </td>
 992 </tr>
 993 <tr>
 994 <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>
 995 <td class="enum_member_description">
 996 <p>skewedFractionHorizontalGap</p>
 997 </td>
 998 <td class="enum_member_annotations"> </td>
 999 </tr>
1000 <tr>
1001 <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>
1002 <td class="enum_member_description">
1003 <p>skewedFractionVerticalGap</p>
1004 </td>
1005 <td class="enum_member_annotations"> </td>
1006 </tr>
1007 <tr>
1008 <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>
1009 <td class="enum_member_description">
1010 <p>overbarVerticalGap</p>
1011 </td>
1012 <td class="enum_member_annotations"> </td>
1013 </tr>
1014 <tr>
1015 <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>
1016 <td class="enum_member_description">
1017 <p>overbarRuleThickness</p>
1018 </td>
1019 <td class="enum_member_annotations"> </td>
1020 </tr>
1021 <tr>
1022 <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>
1023 <td class="enum_member_description">
1024 <p>overbarExtraAscender</p>
1025 </td>
1026 <td class="enum_member_annotations"> </td>
1027 </tr>
1028 <tr>
1029 <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>
1030 <td class="enum_member_description">
1031 <p>underbarVerticalGap</p>
1032 </td>
1033 <td class="enum_member_annotations"> </td>
1034 </tr>
1035 <tr>
1036 <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>
1037 <td class="enum_member_description">
1038 <p>underbarRuleThickness</p>
1039 </td>
1040 <td class="enum_member_annotations"> </td>
1041 </tr>
1042 <tr>
1043 <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>
1044 <td class="enum_member_description">
1045 <p>underbarExtraDescender</p>
1046 </td>
1047 <td class="enum_member_annotations"> </td>
1048 </tr>
1049 <tr>
1050 <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>
1051 <td class="enum_member_description">
1052 <p>radicalVerticalGap</p>
1053 </td>
1054 <td class="enum_member_annotations"> </td>
1055 </tr>
1056 <tr>
1057 <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>
1058 <td class="enum_member_description">
1059 <p>radicalDisplayStyleVerticalGap</p>
1060 </td>
1061 <td class="enum_member_annotations"> </td>
1062 </tr>
1063 <tr>
1064 <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>
1065 <td class="enum_member_description">
1066 <p>radicalRuleThickness</p>
1067 </td>
1068 <td class="enum_member_annotations"> </td>
1069 </tr>
1070 <tr>
1071 <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>
1072 <td class="enum_member_description">
1073 <p>radicalExtraAscender</p>
1074 </td>
1075 <td class="enum_member_annotations"> </td>
1076 </tr>
1077 <tr>
1078 <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>
1079 <td class="enum_member_description">
1080 <p>radicalKernBeforeDegree</p>
1081 </td>
1082 <td class="enum_member_annotations"> </td>
1083 </tr>
1084 <tr>
1085 <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>
1086 <td class="enum_member_description">
1087 <p>radicalKernAfterDegree</p>
1088 </td>
1089 <td class="enum_member_annotations"> </td>
1090 </tr>
1091 <tr>
1092 <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>
1093 <td class="enum_member_description">
1094 <p>radicalDegreeBottomRaisePercent</p>
1095 </td>
1096 <td class="enum_member_annotations"> </td>
1097 </tr>
1098 </tbody>
1099 </table></div>
1100 </div>
1101 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
1102 </div>
1103 <hr>
1104 <div class="refsect2">
1105 <a name="hb-ot-math-kern-t"></a><h3>enum hb_ot_math_kern_t</h3>
1106 <p>The math kerning-table types defined for the four corners
1107 of a glyph.</p>
1108 <div class="refsect3">
1109 <a name="hb-ot-math-kern-t.members"></a><h4>Members</h4>
1110 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1111 <colgroup>
1112 <col width="300px" class="enum_members_name">
1113 <col class="enum_members_description">
1114 <col width="200px" class="enum_members_annotations">
1115 </colgroup>
1116 <tbody>
1117 <tr>
1118 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-TOP-RIGHT:CAPS"></a>HB_OT_MATH_KERN_TOP_RIGHT</p></td>
1119 <td class="enum_member_description">
1120 <p>The top right corner of the glyph.</p>
1121 </td>
1122 <td class="enum_member_annotations"> </td>
1123 </tr>
1124 <tr>
1125 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-TOP-LEFT:CAPS"></a>HB_OT_MATH_KERN_TOP_LEFT</p></td>
1126 <td class="enum_member_description">
1127 <p>The top left corner of the glyph.</p>
1128 </td>
1129 <td class="enum_member_annotations"> </td>
1130 </tr>
1131 <tr>
1132 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-BOTTOM-RIGHT:CAPS"></a>HB_OT_MATH_KERN_BOTTOM_RIGHT</p></td>
1133 <td class="enum_member_description">
1134 <p>The bottom right corner of the glyph.</p>
1135 </td>
1136 <td class="enum_member_annotations"> </td>
1137 </tr>
1138 <tr>
1139 <td class="enum_member_name"><p><a name="HB-OT-MATH-KERN-BOTTOM-LEFT:CAPS"></a>HB_OT_MATH_KERN_BOTTOM_LEFT</p></td>
1140 <td class="enum_member_description">
1141 <p>The bottom left corner of the glyph.</p>
1142 </td>
1143 <td class="enum_member_annotations"> </td>
1144 </tr>
1145 </tbody>
1146 </table></div>
1147 </div>
1148 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
1149 </div>
1150 <hr>
1151 <div class="refsect2">
1152 <a name="hb-ot-math-kern-entry-t"></a><h3>hb_ot_math_kern_entry_t</h3>
1153 <pre class="programlisting">typedef struct {
1154   hb_position_t max_correction_height;
1155   hb_position_t kern_value;
1156 } hb_ot_math_kern_entry_t;
1157 </pre>
1158 <p>Data type to hold math kerning (cut-in) information for a glyph.</p>
1159 <div class="refsect3">
1160 <a name="hb-ot-math-kern-entry-t.members"></a><h4>Members</h4>
1161 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1162 <colgroup>
1163 <col width="300px" class="struct_members_name">
1164 <col class="struct_members_description">
1165 <col width="200px" class="struct_members_annotations">
1166 </colgroup>
1167 <tbody>
1168 <tr>
1169 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-kern-entry-t.max-correction-height"></a>max_correction_height</code></em>;</p></td>
1170 <td class="struct_member_description"><p>The maximum height at which this entry should be used</p></td>
1171 <td class="struct_member_annotations"> </td>
1172 </tr>
1173 <tr>
1174 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-kern-entry-t.kern-value"></a>kern_value</code></em>;</p></td>
1175 <td class="struct_member_description"><p>The kern value of the entry</p></td>
1176 <td class="struct_member_annotations"> </td>
1177 </tr>
1178 </tbody>
1179 </table></div>
1180 </div>
1181 <p class="since">Since: <a class="link" href="api-index-3-4-0.html#api-index-3.4.0">3.4.0</a></p>
1182 </div>
1183 <hr>
1184 <div class="refsect2">
1185 <a name="hb-ot-math-glyph-variant-t"></a><h3>hb_ot_math_glyph_variant_t</h3>
1186 <pre class="programlisting">typedef struct {
1187   hb_codepoint_t glyph;
1188   hb_position_t advance;
1189 } hb_ot_math_glyph_variant_t;
1190 </pre>
1191 <p>Data type to hold math-variant information for a glyph.</p>
1192 <div class="refsect3">
1193 <a name="hb-ot-math-glyph-variant-t.members"></a><h4>Members</h4>
1194 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1195 <colgroup>
1196 <col width="300px" class="struct_members_name">
1197 <col class="struct_members_description">
1198 <col width="200px" class="struct_members_annotations">
1199 </colgroup>
1200 <tbody>
1201 <tr>
1202 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-variant-t.glyph"></a>glyph</code></em>;</p></td>
1203 <td class="struct_member_description"><p>The glyph index of the variant</p></td>
1204 <td class="struct_member_annotations"> </td>
1205 </tr>
1206 <tr>
1207 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-variant-t.advance"></a>advance</code></em>;</p></td>
1208 <td class="struct_member_description"><p>The advance width of the variant</p></td>
1209 <td class="struct_member_annotations"> </td>
1210 </tr>
1211 </tbody>
1212 </table></div>
1213 </div>
1214 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
1215 </div>
1216 <hr>
1217 <div class="refsect2">
1218 <a name="hb-ot-math-glyph-part-flags-t"></a><h3>enum hb_ot_math_glyph_part_flags_t</h3>
1219 <p>Flags for math glyph parts.</p>
1220 <div class="refsect3">
1221 <a name="hb-ot-math-glyph-part-flags-t.members"></a><h4>Members</h4>
1222 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1223 <colgroup>
1224 <col width="300px" class="enum_members_name">
1225 <col class="enum_members_description">
1226 <col width="200px" class="enum_members_annotations">
1227 </colgroup>
1228 <tbody><tr>
1229 <td class="enum_member_name"><p><a name="HB-OT-MATH-GLYPH-PART-FLAG-EXTENDER:CAPS"></a>HB_OT_MATH_GLYPH_PART_FLAG_EXTENDER</p></td>
1230 <td class="enum_member_description">
1231 <p>This is an extender glyph part that
1232 can be repeated to reach the desired length.</p>
1233 </td>
1234 <td class="enum_member_annotations"> </td>
1235 </tr></tbody>
1236 </table></div>
1237 </div>
1238 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
1239 </div>
1240 <hr>
1241 <div class="refsect2">
1242 <a name="hb-ot-math-glyph-part-t"></a><h3>hb_ot_math_glyph_part_t</h3>
1243 <pre class="programlisting">typedef struct {
1244   hb_codepoint_t glyph;
1245   hb_position_t start_connector_length;
1246   hb_position_t end_connector_length;
1247   hb_position_t full_advance;
1248   hb_ot_math_glyph_part_flags_t flags;
1249 } hb_ot_math_glyph_part_t;
1250 </pre>
1251 <p>Data type to hold information for a "part" component of a math-variant glyph.
1252 Large variants for stretchable math glyphs (such as parentheses) can be constructed
1253 on the fly from parts.</p>
1254 <div class="refsect3">
1255 <a name="hb-ot-math-glyph-part-t.members"></a><h4>Members</h4>
1256 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1257 <colgroup>
1258 <col width="300px" class="struct_members_name">
1259 <col class="struct_members_description">
1260 <col width="200px" class="struct_members_annotations">
1261 </colgroup>
1262 <tbody>
1263 <tr>
1264 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-part-t.glyph"></a>glyph</code></em>;</p></td>
1265 <td class="struct_member_description"><p>The glyph index of the variant part</p></td>
1266 <td class="struct_member_annotations"> </td>
1267 </tr>
1268 <tr>
1269 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-part-t.start-connector-length"></a>start_connector_length</code></em>;</p></td>
1270 <td class="struct_member_description"><p>The length of the connector on the starting side of the variant part</p></td>
1271 <td class="struct_member_annotations"> </td>
1272 </tr>
1273 <tr>
1274 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-part-t.end-connector-length"></a>end_connector_length</code></em>;</p></td>
1275 <td class="struct_member_description"><p>The length of the connector on the ending side of the variant part</p></td>
1276 <td class="struct_member_annotations"> </td>
1277 </tr>
1278 <tr>
1279 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-part-t.full-advance"></a>full_advance</code></em>;</p></td>
1280 <td class="struct_member_description"><p>The total advance of the part</p></td>
1281 <td class="struct_member_annotations"> </td>
1282 </tr>
1283 <tr>
1284 <td class="struct_member_name"><p><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"><span class="type">hb_ot_math_glyph_part_flags_t</span></a> <em class="structfield"><code><a name="hb-ot-math-glyph-part-t.flags"></a>flags</code></em>;</p></td>
1285 <td class="struct_member_description"><p><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"><span class="type">hb_ot_math_glyph_part_flags_t</span></a> flags for the part</p></td>
1286 <td class="struct_member_annotations"> </td>
1287 </tr>
1288 </tbody>
1289 </table></div>
1290 </div>
1291 <p class="since">Since: <a class="link" href="api-index-1-3-3.html#api-index-1.3.3">1.3.3</a></p>
1292 </div>
1293 </div>
1294 </div>
1295 <div class="footer">
1296 <hr>Generated by GTK-Doc V1.32</div>
1297 </body>
1298 </html>