docs/html/harfbuzz-hb-font.html

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  17 <a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span>
  18                   <a href="#harfbuzz-hb-font.description" class="shortcut">Description</a></span>
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  25 <div class="refentry">
  26 <a name="harfbuzz-hb-font"></a><div class="titlepage"></div>
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  28 <td valign="top">
  29 <h2><span class="refentrytitle"><a name="harfbuzz-hb-font.top_of_page"></a>hb-font</span></h2>
  30 <p>hb-font — Font objects</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-font.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 <span class="returnvalue">void</span>
  45 </td>
  46 <td class="function_name">
  47 <a class="link" href="harfbuzz-hb-font.html#hb-font-add-glyph-origin-for-direction" title="hb_font_add_glyph_origin_for_direction ()">hb_font_add_glyph_origin_for_direction</a> <span class="c_punctuation">()</span>
  48 </td>
  49 </tr>
  50 <tr>
  51 <td class="function_type">
  52 <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
  53 </td>
  54 <td class="function_name">
  55 <a class="link" href="harfbuzz-hb-font.html#hb-font-create" title="hb_font_create ()">hb_font_create</a> <span class="c_punctuation">()</span>
  56 </td>
  57 </tr>
  58 <tr>
  59 <td class="function_type">
  60 <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
  61 </td>
  62 <td class="function_name">
  63 <a class="link" href="harfbuzz-hb-font.html#hb-font-create-sub-font" title="hb_font_create_sub_font ()">hb_font_create_sub_font</a> <span class="c_punctuation">()</span>
  64 </td>
  65 </tr>
  66 <tr>
  67 <td class="function_type">
  68 <span class="returnvalue">void</span>
  69 </td>
  70 <td class="function_name">
  71 <a class="link" href="harfbuzz-hb-font.html#hb-font-destroy" title="hb_font_destroy ()">hb_font_destroy</a> <span class="c_punctuation">()</span>
  72 </td>
  73 </tr>
  74 <tr>
  75 <td class="function_type">
  76 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
  77 </td>
  78 <td class="function_name">
  79 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-create" title="hb_font_funcs_create ()">hb_font_funcs_create</a> <span class="c_punctuation">()</span>
  80 </td>
  81 </tr>
  82 <tr>
  83 <td class="function_type">
  84 <span class="returnvalue">void</span>
  85 </td>
  86 <td class="function_name">
  87 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-destroy" title="hb_font_funcs_destroy ()">hb_font_funcs_destroy</a> <span class="c_punctuation">()</span>
  88 </td>
  89 </tr>
  90 <tr>
  91 <td class="function_type">
  92 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
  93 </td>
  94 <td class="function_name">
  95 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-get-empty" title="hb_font_funcs_get_empty ()">hb_font_funcs_get_empty</a> <span class="c_punctuation">()</span>
  96 </td>
  97 </tr>
  98 <tr>
  99 <td class="function_type">
 100 <span class="returnvalue">void</span> *
 101 </td>
 102 <td class="function_name">
 103 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-get-user-data" title="hb_font_funcs_get_user_data ()">hb_font_funcs_get_user_data</a> <span class="c_punctuation">()</span>
 104 </td>
 105 </tr>
 106 <tr>
 107 <td class="function_type">
 108 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 109 </td>
 110 <td class="function_name">
 111 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-is-immutable" title="hb_font_funcs_is_immutable ()">hb_font_funcs_is_immutable</a> <span class="c_punctuation">()</span>
 112 </td>
 113 </tr>
 114 <tr>
 115 <td class="function_type">
 116 <span class="returnvalue">void</span>
 117 </td>
 118 <td class="function_name">
 119 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-make-immutable" title="hb_font_funcs_make_immutable ()">hb_font_funcs_make_immutable</a> <span class="c_punctuation">()</span>
 120 </td>
 121 </tr>
 122 <tr>
 123 <td class="function_type">
 124 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
 125 </td>
 126 <td class="function_name">
 127 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-reference" title="hb_font_funcs_reference ()">hb_font_funcs_reference</a> <span class="c_punctuation">()</span>
 128 </td>
 129 </tr>
 130 <tr>
 131 <td class="function_type">
 132 <span class="returnvalue">void</span>
 133 </td>
 134 <td class="function_name">
 135 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-contour-point-func" title="hb_font_funcs_set_glyph_contour_point_func ()">hb_font_funcs_set_glyph_contour_point_func</a> <span class="c_punctuation">()</span>
 136 </td>
 137 </tr>
 138 <tr>
 139 <td class="function_type">
 140 <span class="returnvalue">void</span>
 141 </td>
 142 <td class="function_name">
 143 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-extents-func" title="hb_font_funcs_set_glyph_extents_func ()">hb_font_funcs_set_glyph_extents_func</a> <span class="c_punctuation">()</span>
 144 </td>
 145 </tr>
 146 <tr>
 147 <td class="function_type">
 148 <span class="returnvalue">void</span>
 149 </td>
 150 <td class="function_name">
 151 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-from-name-func" title="hb_font_funcs_set_glyph_from_name_func ()">hb_font_funcs_set_glyph_from_name_func</a> <span class="c_punctuation">()</span>
 152 </td>
 153 </tr>
 154 <tr>
 155 <td class="function_type">
 156 <span class="returnvalue">void</span>
 157 </td>
 158 <td class="function_name">
 159 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-h-advance-func" title="hb_font_funcs_set_glyph_h_advance_func ()">hb_font_funcs_set_glyph_h_advance_func</a> <span class="c_punctuation">()</span>
 160 </td>
 161 </tr>
 162 <tr>
 163 <td class="function_type">
 164 <span class="returnvalue">void</span>
 165 </td>
 166 <td class="function_name">
 167 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-h-advances-func" title="hb_font_funcs_set_glyph_h_advances_func ()">hb_font_funcs_set_glyph_h_advances_func</a> <span class="c_punctuation">()</span>
 168 </td>
 169 </tr>
 170 <tr>
 171 <td class="function_type">
 172 <span class="returnvalue">void</span>
 173 </td>
 174 <td class="function_name">
 175 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-h-kerning-func" title="hb_font_funcs_set_glyph_h_kerning_func ()">hb_font_funcs_set_glyph_h_kerning_func</a> <span class="c_punctuation">()</span>
 176 </td>
 177 </tr>
 178 <tr>
 179 <td class="function_type">
 180 <span class="returnvalue">void</span>
 181 </td>
 182 <td class="function_name">
 183 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-h-origin-func" title="hb_font_funcs_set_glyph_h_origin_func ()">hb_font_funcs_set_glyph_h_origin_func</a> <span class="c_punctuation">()</span>
 184 </td>
 185 </tr>
 186 <tr>
 187 <td class="function_type">
 188 <span class="returnvalue">void</span>
 189 </td>
 190 <td class="function_name">
 191 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-name-func" title="hb_font_funcs_set_glyph_name_func ()">hb_font_funcs_set_glyph_name_func</a> <span class="c_punctuation">()</span>
 192 </td>
 193 </tr>
 194 <tr>
 195 <td class="function_type">
 196 <span class="returnvalue">void</span>
 197 </td>
 198 <td class="function_name">
 199 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-v-advance-func" title="hb_font_funcs_set_glyph_v_advance_func ()">hb_font_funcs_set_glyph_v_advance_func</a> <span class="c_punctuation">()</span>
 200 </td>
 201 </tr>
 202 <tr>
 203 <td class="function_type">
 204 <span class="returnvalue">void</span>
 205 </td>
 206 <td class="function_name">
 207 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-v-advances-func" title="hb_font_funcs_set_glyph_v_advances_func ()">hb_font_funcs_set_glyph_v_advances_func</a> <span class="c_punctuation">()</span>
 208 </td>
 209 </tr>
 210 <tr>
 211 <td class="function_type">
 212 <span class="returnvalue">void</span>
 213 </td>
 214 <td class="function_name">
 215 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-glyph-v-origin-func" title="hb_font_funcs_set_glyph_v_origin_func ()">hb_font_funcs_set_glyph_v_origin_func</a> <span class="c_punctuation">()</span>
 216 </td>
 217 </tr>
 218 <tr>
 219 <td class="function_type">
 220 <span class="returnvalue">void</span>
 221 </td>
 222 <td class="function_name">
 223 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-nominal-glyph-func" title="hb_font_funcs_set_nominal_glyph_func ()">hb_font_funcs_set_nominal_glyph_func</a> <span class="c_punctuation">()</span>
 224 </td>
 225 </tr>
 226 <tr>
 227 <td class="function_type">
 228 <span class="returnvalue">void</span>
 229 </td>
 230 <td class="function_name">
 231 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-nominal-glyphs-func" title="hb_font_funcs_set_nominal_glyphs_func ()">hb_font_funcs_set_nominal_glyphs_func</a> <span class="c_punctuation">()</span>
 232 </td>
 233 </tr>
 234 <tr>
 235 <td class="function_type">
 236 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 237 </td>
 238 <td class="function_name">
 239 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-user-data" title="hb_font_funcs_set_user_data ()">hb_font_funcs_set_user_data</a> <span class="c_punctuation">()</span>
 240 </td>
 241 </tr>
 242 <tr>
 243 <td class="function_type">
 244 <span class="returnvalue">void</span>
 245 </td>
 246 <td class="function_name">
 247 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-variation-glyph-func" title="hb_font_funcs_set_variation_glyph_func ()">hb_font_funcs_set_variation_glyph_func</a> <span class="c_punctuation">()</span>
 248 </td>
 249 </tr>
 250 <tr>
 251 <td class="function_type">
 252 <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
 253 </td>
 254 <td class="function_name">
 255 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-empty" title="hb_font_get_empty ()">hb_font_get_empty</a> <span class="c_punctuation">()</span>
 256 </td>
 257 </tr>
 258 <tr>
 259 <td class="function_type">
 260 <a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="returnvalue">hb_face_t</span></a> *
 261 </td>
 262 <td class="function_name">
 263 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-face" title="hb_font_get_face ()">hb_font_get_face</a> <span class="c_punctuation">()</span>
 264 </td>
 265 </tr>
 266 <tr>
 267 <td class="function_type">
 268 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 269 </td>
 270 <td class="function_name">
 271 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph" title="hb_font_get_glyph ()">hb_font_get_glyph</a> <span class="c_punctuation">()</span>
 272 </td>
 273 </tr>
 274 <tr>
 275 <td class="function_type">
 276 <span class="returnvalue">void</span>
 277 </td>
 278 <td class="function_name">
 279 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-advance-for-direction" title="hb_font_get_glyph_advance_for_direction ()">hb_font_get_glyph_advance_for_direction</a> <span class="c_punctuation">()</span>
 280 </td>
 281 </tr>
 282 <tr>
 283 <td class="function_type">
 284 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 285 </td>
 286 <td class="function_name">
 287 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-advance-func-t" title="hb_font_get_glyph_advance_func_t ()">*hb_font_get_glyph_advance_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 288 </td>
 289 </tr>
 290 <tr>
 291 <td class="function_type">
 292 <span class="returnvalue">void</span>
 293 </td>
 294 <td class="function_name">
 295 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-advances-for-direction" title="hb_font_get_glyph_advances_for_direction ()">hb_font_get_glyph_advances_for_direction</a> <span class="c_punctuation">()</span>
 296 </td>
 297 </tr>
 298 <tr>
 299 <td class="function_type">
 300 <span class="returnvalue">void</span>
 301 </td>
 302 <td class="function_name">
 303 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-advances-func-t" title="hb_font_get_glyph_advances_func_t ()">*hb_font_get_glyph_advances_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 304 </td>
 305 </tr>
 306 <tr>
 307 <td class="function_type">
 308 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 309 </td>
 310 <td class="function_name">
 311 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-contour-point" title="hb_font_get_glyph_contour_point ()">hb_font_get_glyph_contour_point</a> <span class="c_punctuation">()</span>
 312 </td>
 313 </tr>
 314 <tr>
 315 <td class="function_type">
 316 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 317 </td>
 318 <td class="function_name">
 319 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-contour-point-for-origin" title="hb_font_get_glyph_contour_point_for_origin ()">hb_font_get_glyph_contour_point_for_origin</a> <span class="c_punctuation">()</span>
 320 </td>
 321 </tr>
 322 <tr>
 323 <td class="function_type">
 324 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 325 </td>
 326 <td class="function_name">
 327 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-contour-point-func-t" title="hb_font_get_glyph_contour_point_func_t ()">*hb_font_get_glyph_contour_point_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 328 </td>
 329 </tr>
 330 <tr>
 331 <td class="function_type">
 332 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 333 </td>
 334 <td class="function_name">
 335 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-extents" title="hb_font_get_glyph_extents ()">hb_font_get_glyph_extents</a> <span class="c_punctuation">()</span>
 336 </td>
 337 </tr>
 338 <tr>
 339 <td class="function_type">
 340 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 341 </td>
 342 <td class="function_name">
 343 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-extents-for-origin" title="hb_font_get_glyph_extents_for_origin ()">hb_font_get_glyph_extents_for_origin</a> <span class="c_punctuation">()</span>
 344 </td>
 345 </tr>
 346 <tr>
 347 <td class="function_type">
 348 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 349 </td>
 350 <td class="function_name">
 351 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-extents-func-t" title="hb_font_get_glyph_extents_func_t ()">*hb_font_get_glyph_extents_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 352 </td>
 353 </tr>
 354 <tr>
 355 <td class="function_type">
 356 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 357 </td>
 358 <td class="function_name">
 359 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-from-name" title="hb_font_get_glyph_from_name ()">hb_font_get_glyph_from_name</a> <span class="c_punctuation">()</span>
 360 </td>
 361 </tr>
 362 <tr>
 363 <td class="function_type">
 364 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 365 </td>
 366 <td class="function_name">
 367 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-from-name-func-t" title="hb_font_get_glyph_from_name_func_t ()">*hb_font_get_glyph_from_name_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 368 </td>
 369 </tr>
 370 <tr>
 371 <td class="function_type">
 372 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 373 </td>
 374 <td class="function_name">
 375 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advance" title="hb_font_get_glyph_h_advance ()">hb_font_get_glyph_h_advance</a> <span class="c_punctuation">()</span>
 376 </td>
 377 </tr>
 378 <tr>
 379 <td class="function_type">
 380 <span class="returnvalue">void</span>
 381 </td>
 382 <td class="function_name">
 383 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advances" title="hb_font_get_glyph_h_advances ()">hb_font_get_glyph_h_advances</a> <span class="c_punctuation">()</span>
 384 </td>
 385 </tr>
 386 <tr>
 387 <td class="function_type">
 388 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 389 </td>
 390 <td class="function_name">
 391 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-kerning" title="hb_font_get_glyph_h_kerning ()">hb_font_get_glyph_h_kerning</a> <span class="c_punctuation">()</span>
 392 </td>
 393 </tr>
 394 <tr>
 395 <td class="function_type">
 396 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 397 </td>
 398 <td class="function_name">
 399 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-origin" title="hb_font_get_glyph_h_origin ()">hb_font_get_glyph_h_origin</a> <span class="c_punctuation">()</span>
 400 </td>
 401 </tr>
 402 <tr>
 403 <td class="function_type">
 404 <span class="returnvalue">void</span>
 405 </td>
 406 <td class="function_name">
 407 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-kerning-for-direction" title="hb_font_get_glyph_kerning_for_direction ()">hb_font_get_glyph_kerning_for_direction</a> <span class="c_punctuation">()</span>
 408 </td>
 409 </tr>
 410 <tr>
 411 <td class="function_type">
 412 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 413 </td>
 414 <td class="function_name">
 415 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-kerning-func-t" title="hb_font_get_glyph_kerning_func_t ()">*hb_font_get_glyph_kerning_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 416 </td>
 417 </tr>
 418 <tr>
 419 <td class="function_type">
 420 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 421 </td>
 422 <td class="function_name">
 423 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-name" title="hb_font_get_glyph_name ()">hb_font_get_glyph_name</a> <span class="c_punctuation">()</span>
 424 </td>
 425 </tr>
 426 <tr>
 427 <td class="function_type">
 428 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 429 </td>
 430 <td class="function_name">
 431 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-name-func-t" title="hb_font_get_glyph_name_func_t ()">*hb_font_get_glyph_name_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 432 </td>
 433 </tr>
 434 <tr>
 435 <td class="function_type">
 436 <span class="returnvalue">void</span>
 437 </td>
 438 <td class="function_name">
 439 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-origin-for-direction" title="hb_font_get_glyph_origin_for_direction ()">hb_font_get_glyph_origin_for_direction</a> <span class="c_punctuation">()</span>
 440 </td>
 441 </tr>
 442 <tr>
 443 <td class="function_type">
 444 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 445 </td>
 446 <td class="function_name">
 447 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-origin-func-t" title="hb_font_get_glyph_origin_func_t ()">*hb_font_get_glyph_origin_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 448 </td>
 449 </tr>
 450 <tr>
 451 <td class="function_type">
 452 <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="returnvalue">hb_position_t</span></a>
 453 </td>
 454 <td class="function_name">
 455 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advance" title="hb_font_get_glyph_v_advance ()">hb_font_get_glyph_v_advance</a> <span class="c_punctuation">()</span>
 456 </td>
 457 </tr>
 458 <tr>
 459 <td class="function_type">
 460 <span class="returnvalue">void</span>
 461 </td>
 462 <td class="function_name">
 463 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advances" title="hb_font_get_glyph_v_advances ()">hb_font_get_glyph_v_advances</a> <span class="c_punctuation">()</span>
 464 </td>
 465 </tr>
 466 <tr>
 467 <td class="function_type">
 468 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 469 </td>
 470 <td class="function_name">
 471 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-origin" title="hb_font_get_glyph_v_origin ()">hb_font_get_glyph_v_origin</a> <span class="c_punctuation">()</span>
 472 </td>
 473 </tr>
 474 <tr>
 475 <td class="function_type">
 476 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 477 </td>
 478 <td class="function_name">
 479 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyph" title="hb_font_get_nominal_glyph ()">hb_font_get_nominal_glyph</a> <span class="c_punctuation">()</span>
 480 </td>
 481 </tr>
 482 <tr>
 483 <td class="function_type">
 484 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 485 </td>
 486 <td class="function_name">
 487 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyph-func-t" title="hb_font_get_nominal_glyph_func_t ()">*hb_font_get_nominal_glyph_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 488 </td>
 489 </tr>
 490 <tr>
 491 <td class="function_type">unsigned <span class="returnvalue">int</span>
 492 </td>
 493 <td class="function_name">
 494 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyphs" title="hb_font_get_nominal_glyphs ()">hb_font_get_nominal_glyphs</a> <span class="c_punctuation">()</span>
 495 </td>
 496 </tr>
 497 <tr>
 498 <td class="function_type">unsigned <span class="returnvalue">int</span>
 499 </td>
 500 <td class="function_name">
 501 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyphs-func-t" title="hb_font_get_nominal_glyphs_func_t ()">*hb_font_get_nominal_glyphs_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 502 </td>
 503 </tr>
 504 <tr>
 505 <td class="function_type">
 506 <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
 507 </td>
 508 <td class="function_name">
 509 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-parent" title="hb_font_get_parent ()">hb_font_get_parent</a> <span class="c_punctuation">()</span>
 510 </td>
 511 </tr>
 512 <tr>
 513 <td class="function_type">
 514 <span class="returnvalue">void</span>
 515 </td>
 516 <td class="function_name">
 517 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-ppem" title="hb_font_get_ppem ()">hb_font_get_ppem</a> <span class="c_punctuation">()</span>
 518 </td>
 519 </tr>
 520 <tr>
 521 <td class="function_type">
 522 <span class="returnvalue">float</span>
 523 </td>
 524 <td class="function_name">
 525 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-ptem" title="hb_font_get_ptem ()">hb_font_get_ptem</a> <span class="c_punctuation">()</span>
 526 </td>
 527 </tr>
 528 <tr>
 529 <td class="function_type">
 530 <span class="returnvalue">void</span>
 531 </td>
 532 <td class="function_name">
 533 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-scale" title="hb_font_get_scale ()">hb_font_get_scale</a> <span class="c_punctuation">()</span>
 534 </td>
 535 </tr>
 536 <tr>
 537 <td class="function_type">
 538 <span class="returnvalue">float</span>
 539 </td>
 540 <td class="function_name">
 541 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-synthetic-slant" title="hb_font_get_synthetic_slant ()">hb_font_get_synthetic_slant</a> <span class="c_punctuation">()</span>
 542 </td>
 543 </tr>
 544 <tr>
 545 <td class="function_type">
 546 <span class="returnvalue">void</span> *
 547 </td>
 548 <td class="function_name">
 549 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-user-data" title="hb_font_get_user_data ()">hb_font_get_user_data</a> <span class="c_punctuation">()</span>
 550 </td>
 551 </tr>
 552 <tr>
 553 <td class="function_type">
 554 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 555 </td>
 556 <td class="function_name">
 557 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph" title="hb_font_get_variation_glyph ()">hb_font_get_variation_glyph</a> <span class="c_punctuation">()</span>
 558 </td>
 559 </tr>
 560 <tr>
 561 <td class="function_type">
 562 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 563 </td>
 564 <td class="function_name">
 565 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph-func-t" title="hb_font_get_variation_glyph_func_t ()">*hb_font_get_variation_glyph_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 566 </td>
 567 </tr>
 568 <tr>
 569 <td class="function_type">const <span class="returnvalue">float</span> *
 570 </td>
 571 <td class="function_name">
 572 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-var-coords-design" title="hb_font_get_var_coords_design ()">hb_font_get_var_coords_design</a> <span class="c_punctuation">()</span>
 573 </td>
 574 </tr>
 575 <tr>
 576 <td class="function_type">const <span class="returnvalue">int</span> *
 577 </td>
 578 <td class="function_name">
 579 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-var-coords-normalized" title="hb_font_get_var_coords_normalized ()">hb_font_get_var_coords_normalized</a> <span class="c_punctuation">()</span>
 580 </td>
 581 </tr>
 582 <tr>
 583 <td class="function_type">
 584 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 585 </td>
 586 <td class="function_name">
 587 <a class="link" href="harfbuzz-hb-font.html#hb-font-glyph-from-string" title="hb_font_glyph_from_string ()">hb_font_glyph_from_string</a> <span class="c_punctuation">()</span>
 588 </td>
 589 </tr>
 590 <tr>
 591 <td class="function_type">
 592 <span class="returnvalue">void</span>
 593 </td>
 594 <td class="function_name">
 595 <a class="link" href="harfbuzz-hb-font.html#hb-font-glyph-to-string" title="hb_font_glyph_to_string ()">hb_font_glyph_to_string</a> <span class="c_punctuation">()</span>
 596 </td>
 597 </tr>
 598 <tr>
 599 <td class="function_type">
 600 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 601 </td>
 602 <td class="function_name">
 603 <a class="link" href="harfbuzz-hb-font.html#hb-font-is-immutable" title="hb_font_is_immutable ()">hb_font_is_immutable</a> <span class="c_punctuation">()</span>
 604 </td>
 605 </tr>
 606 <tr>
 607 <td class="function_type">
 608 <span class="returnvalue">void</span>
 609 </td>
 610 <td class="function_name">
 611 <a class="link" href="harfbuzz-hb-font.html#hb-font-make-immutable" title="hb_font_make_immutable ()">hb_font_make_immutable</a> <span class="c_punctuation">()</span>
 612 </td>
 613 </tr>
 614 <tr>
 615 <td class="function_type">
 616 <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
 617 </td>
 618 <td class="function_name">
 619 <a class="link" href="harfbuzz-hb-font.html#hb-font-reference" title="hb_font_reference ()">hb_font_reference</a> <span class="c_punctuation">()</span>
 620 </td>
 621 </tr>
 622 <tr>
 623 <td class="function_type">
 624 <span class="returnvalue">void</span>
 625 </td>
 626 <td class="function_name">
 627 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-face" title="hb_font_set_face ()">hb_font_set_face</a> <span class="c_punctuation">()</span>
 628 </td>
 629 </tr>
 630 <tr>
 631 <td class="function_type">
 632 <span class="returnvalue">void</span>
 633 </td>
 634 <td class="function_name">
 635 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-funcs" title="hb_font_set_funcs ()">hb_font_set_funcs</a> <span class="c_punctuation">()</span>
 636 </td>
 637 </tr>
 638 <tr>
 639 <td class="function_type">
 640 <span class="returnvalue">void</span>
 641 </td>
 642 <td class="function_name">
 643 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-funcs-data" title="hb_font_set_funcs_data ()">hb_font_set_funcs_data</a> <span class="c_punctuation">()</span>
 644 </td>
 645 </tr>
 646 <tr>
 647 <td class="function_type">
 648 <span class="returnvalue">void</span>
 649 </td>
 650 <td class="function_name">
 651 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-parent" title="hb_font_set_parent ()">hb_font_set_parent</a> <span class="c_punctuation">()</span>
 652 </td>
 653 </tr>
 654 <tr>
 655 <td class="function_type">
 656 <span class="returnvalue">void</span>
 657 </td>
 658 <td class="function_name">
 659 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-ppem" title="hb_font_set_ppem ()">hb_font_set_ppem</a> <span class="c_punctuation">()</span>
 660 </td>
 661 </tr>
 662 <tr>
 663 <td class="function_type">
 664 <span class="returnvalue">void</span>
 665 </td>
 666 <td class="function_name">
 667 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-ptem" title="hb_font_set_ptem ()">hb_font_set_ptem</a> <span class="c_punctuation">()</span>
 668 </td>
 669 </tr>
 670 <tr>
 671 <td class="function_type">
 672 <span class="returnvalue">void</span>
 673 </td>
 674 <td class="function_name">
 675 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-scale" title="hb_font_set_scale ()">hb_font_set_scale</a> <span class="c_punctuation">()</span>
 676 </td>
 677 </tr>
 678 <tr>
 679 <td class="function_type">
 680 <span class="returnvalue">void</span>
 681 </td>
 682 <td class="function_name">
 683 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-synthetic-slant" title="hb_font_set_synthetic_slant ()">hb_font_set_synthetic_slant</a> <span class="c_punctuation">()</span>
 684 </td>
 685 </tr>
 686 <tr>
 687 <td class="function_type">
 688 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 689 </td>
 690 <td class="function_name">
 691 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-user-data" title="hb_font_set_user_data ()">hb_font_set_user_data</a> <span class="c_punctuation">()</span>
 692 </td>
 693 </tr>
 694 <tr>
 695 <td class="function_type">
 696 <span class="returnvalue">void</span>
 697 </td>
 698 <td class="function_name">
 699 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-variations" title="hb_font_set_variations ()">hb_font_set_variations</a> <span class="c_punctuation">()</span>
 700 </td>
 701 </tr>
 702 <tr>
 703 <td class="function_type">
 704 <span class="returnvalue">void</span>
 705 </td>
 706 <td class="function_name">
 707 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-var-coords-design" title="hb_font_set_var_coords_design ()">hb_font_set_var_coords_design</a> <span class="c_punctuation">()</span>
 708 </td>
 709 </tr>
 710 <tr>
 711 <td class="function_type">
 712 <span class="returnvalue">void</span>
 713 </td>
 714 <td class="function_name">
 715 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-var-coords-normalized" title="hb_font_set_var_coords_normalized ()">hb_font_set_var_coords_normalized</a> <span class="c_punctuation">()</span>
 716 </td>
 717 </tr>
 718 <tr>
 719 <td class="function_type">
 720 <span class="returnvalue">void</span>
 721 </td>
 722 <td class="function_name">
 723 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-var-named-instance" title="hb_font_set_var_named_instance ()">hb_font_set_var_named_instance</a> <span class="c_punctuation">()</span>
 724 </td>
 725 </tr>
 726 <tr>
 727 <td class="function_type">
 728 <span class="returnvalue">void</span>
 729 </td>
 730 <td class="function_name">
 731 <a class="link" href="harfbuzz-hb-font.html#hb-font-subtract-glyph-origin-for-direction" title="hb_font_subtract_glyph_origin_for_direction ()">hb_font_subtract_glyph_origin_for_direction</a> <span class="c_punctuation">()</span>
 732 </td>
 733 </tr>
 734 <tr>
 735 <td class="function_type">
 736 <a class="link" href="harfbuzz-hb-blob.html#hb-blob-t" title="hb_blob_t"><span class="returnvalue">hb_blob_t</span></a> *
 737 </td>
 738 <td class="function_name">
 739 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-reference-table-func-t" title="hb_reference_table_func_t ()">*hb_reference_table_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 740 </td>
 741 </tr>
 742 <tr>
 743 <td class="function_type">
 744 <span class="returnvalue">void</span>
 745 </td>
 746 <td class="function_name">
 747 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-font-h-extents-func" title="hb_font_funcs_set_font_h_extents_func ()">hb_font_funcs_set_font_h_extents_func</a> <span class="c_punctuation">()</span>
 748 </td>
 749 </tr>
 750 <tr>
 751 <td class="function_type">
 752 <span class="returnvalue">void</span>
 753 </td>
 754 <td class="function_name">
 755 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-set-font-v-extents-func" title="hb_font_funcs_set_font_v_extents_func ()">hb_font_funcs_set_font_v_extents_func</a> <span class="c_punctuation">()</span>
 756 </td>
 757 </tr>
 758 <tr>
 759 <td class="function_type">
 760 <span class="returnvalue">void</span>
 761 </td>
 762 <td class="function_name">
 763 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-extents-for-direction" title="hb_font_get_extents_for_direction ()">hb_font_get_extents_for_direction</a> <span class="c_punctuation">()</span>
 764 </td>
 765 </tr>
 766 <tr>
 767 <td class="function_type">
 768 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 769 </td>
 770 <td class="function_name">
 771 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-extents-func-t" title="hb_font_get_font_extents_func_t ()">*hb_font_get_font_extents_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 772 </td>
 773 </tr>
 774 <tr>
 775 <td class="function_type">
 776 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 777 </td>
 778 <td class="function_name">
 779 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-h-extents" title="hb_font_get_h_extents ()">hb_font_get_h_extents</a> <span class="c_punctuation">()</span>
 780 </td>
 781 </tr>
 782 <tr>
 783 <td class="function_type">
 784 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 785 </td>
 786 <td class="function_name">
 787 <a class="link" href="harfbuzz-hb-font.html#hb-font-get-v-extents" title="hb_font_get_v_extents ()">hb_font_get_v_extents</a> <span class="c_punctuation">()</span>
 788 </td>
 789 </tr>
 790 </tbody>
 791 </table></div>
 792 </div>
 793 <div class="refsect1">
 794 <a name="harfbuzz-hb-font.other"></a><h2>Types and Values</h2>
 795 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 796 <colgroup>
 797 <col width="150px" class="other_proto_type">
 798 <col class="other_proto_name">
 799 </colgroup>
 800 <tbody>
 801 <tr>
 802 <td class="typedef_keyword">typedef</td>
 803 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t">hb_font_funcs_t</a></td>
 804 </tr>
 805 <tr>
 806 <td class="typedef_keyword">typedef</td>
 807 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advance-func-t" title="hb_font_get_glyph_h_advance_func_t">hb_font_get_glyph_h_advance_func_t</a></td>
 808 </tr>
 809 <tr>
 810 <td class="typedef_keyword">typedef</td>
 811 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advances-func-t" title="hb_font_get_glyph_h_advances_func_t">hb_font_get_glyph_h_advances_func_t</a></td>
 812 </tr>
 813 <tr>
 814 <td class="typedef_keyword">typedef</td>
 815 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-kerning-func-t" title="hb_font_get_glyph_h_kerning_func_t">hb_font_get_glyph_h_kerning_func_t</a></td>
 816 </tr>
 817 <tr>
 818 <td class="typedef_keyword">typedef</td>
 819 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-origin-func-t" title="hb_font_get_glyph_h_origin_func_t">hb_font_get_glyph_h_origin_func_t</a></td>
 820 </tr>
 821 <tr>
 822 <td class="typedef_keyword">typedef</td>
 823 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advance-func-t" title="hb_font_get_glyph_v_advance_func_t">hb_font_get_glyph_v_advance_func_t</a></td>
 824 </tr>
 825 <tr>
 826 <td class="typedef_keyword">typedef</td>
 827 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advances-func-t" title="hb_font_get_glyph_v_advances_func_t">hb_font_get_glyph_v_advances_func_t</a></td>
 828 </tr>
 829 <tr>
 830 <td class="typedef_keyword">typedef</td>
 831 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-origin-func-t" title="hb_font_get_glyph_v_origin_func_t">hb_font_get_glyph_v_origin_func_t</a></td>
 832 </tr>
 833 <tr>
 834 <td class="typedef_keyword">typedef</td>
 835 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t">hb_font_t</a></td>
 836 </tr>
 837 <tr>
 838 <td class="typedef_keyword">typedef</td>
 839 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-h-extents-func-t" title="hb_font_get_font_h_extents_func_t">hb_font_get_font_h_extents_func_t</a></td>
 840 </tr>
 841 <tr>
 842 <td class="typedef_keyword">typedef</td>
 843 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-v-extents-func-t" title="hb_font_get_font_v_extents_func_t">hb_font_get_font_v_extents_func_t</a></td>
 844 </tr>
 845 <tr>
 846 <td class="datatype_keyword"> </td>
 847 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t">hb_font_extents_t</a></td>
 848 </tr>
 849 <tr>
 850 <td class="datatype_keyword"> </td>
 851 <td class="function_name"><a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t">hb_glyph_extents_t</a></td>
 852 </tr>
 853 </tbody>
 854 </table></div>
 855 </div>
 856 <div class="refsect1">
 857 <a name="harfbuzz-hb-font.includes"></a><h2>Includes</h2>
 858 <pre class="synopsis">#include &lt;hb.h&gt;
 859 </pre>
 860 </div>
 861 <div class="refsect1">
 862 <a name="harfbuzz-hb-font.description"></a><h2>Description</h2>
 863 <p>Functions for working with font objects.</p>
 864 <p>A font object represents a font face at a specific size and with
 865 certain other parameters (pixels-per-em, points-per-em, variation
 866 settings) specified. Font objects are created from font face
 867 objects, and are used as input to <a class="link" href="harfbuzz-hb-shape.html#hb-shape" title="hb_shape ()"><code class="function">hb_shape()</code></a>, among other things.</p>
 868 <p>Client programs can optionally pass in their own functions that
 869 implement the basic, lower-level queries of font objects. This set
 870 of font functions is defined by the virtual methods in
 871 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a>.</p>
 872 <p>HarfBuzz provides a built-in set of lightweight default
 873 functions for each method in <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a>.</p>
 874 </div>
 875 <div class="refsect1">
 876 <a name="harfbuzz-hb-font.functions_details"></a><h2>Functions</h2>
 877 <div class="refsect2">
 878 <a name="hb-font-add-glyph-origin-for-direction"></a><h3>hb_font_add_glyph_origin_for_direction ()</h3>
 879 <pre class="programlisting"><span class="returnvalue">void</span>
 880 hb_font_add_glyph_origin_for_direction
 881                                (<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>,
 882                                 <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>,
 883                                 <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>,
 884                                 <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> *x</code></em>,
 885                                 <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> *y</code></em>);</pre>
 886 <p>Adds the origin coordinates to an (X,Y) point coordinate, in
 887 the specified glyph ID in the specified font.</p>
 888 <p>Calls the appropriate direction-specific variant (horizontal
 889 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
 890 .</p>
 891 <div class="refsect3">
 892 <a name="hb-font-add-glyph-origin-for-direction.parameters"></a><h4>Parameters</h4>
 893 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 894 <colgroup>
 895 <col width="150px" class="parameters_name">
 896 <col class="parameters_description">
 897 <col width="200px" class="parameters_annotations">
 898 </colgroup>
 899 <tbody>
 900 <tr>
 901 <td class="parameter_name"><p>font</p></td>
 902 <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>
 903 <td class="parameter_annotations"> </td>
 904 </tr>
 905 <tr>
 906 <td class="parameter_name"><p>glyph</p></td>
 907 <td class="parameter_description"><p>The glyph ID to query</p></td>
 908 <td class="parameter_annotations"> </td>
 909 </tr>
 910 <tr>
 911 <td class="parameter_name"><p>direction</p></td>
 912 <td class="parameter_description"><p>The direction of the text segment</p></td>
 913 <td class="parameter_annotations"> </td>
 914 </tr>
 915 <tr>
 916 <td class="parameter_name"><p>x</p></td>
 917 <td class="parameter_description"><p>Input = The original X coordinate
 918 Output = The X coordinate plus the X-coordinate of the origin. </p></td>
 919 <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>
 920 </tr>
 921 <tr>
 922 <td class="parameter_name"><p>y</p></td>
 923 <td class="parameter_description"><p>Input = The original Y coordinate
 924 Output = The Y coordinate plus the Y-coordinate of the origin. </p></td>
 925 <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>
 926 </tr>
 927 </tbody>
 928 </table></div>
 929 </div>
 930 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
 931 </div>
 932 <hr>
 933 <div class="refsect2">
 934 <a name="hb-font-create"></a><h3>hb_font_create ()</h3>
 935 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
 936 hb_font_create (<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>
 937 <p>Constructs a new font object from the specified face.</p>
 938 <div class="note">Note: If <em class="parameter"><code>face</code></em>'s index value (as passed to <a class="link" href="harfbuzz-hb-face.html#hb-face-create" title="hb_face_create ()"><code class="function">hb_face_create()</code></a>
 939 has non-zero top 16-bits, those bits minus one are passed to
 940 <a class="link" href="harfbuzz-hb-font.html#hb-font-set-var-named-instance" title="hb_font_set_var_named_instance ()"><code class="function">hb_font_set_var_named_instance()</code></a>, effectively loading a named-instance
 941 of a variable font, instead of the default-instance.  This allows
 942 specifying which named-instance to load by default when creating the
 943 face.</div>
 944 <p><span class="annotation">[Xconstructor]</span></p>
 945 <div class="refsect3">
 946 <a name="hb-font-create.parameters"></a><h4>Parameters</h4>
 947 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 948 <colgroup>
 949 <col width="150px" class="parameters_name">
 950 <col class="parameters_description">
 951 <col width="200px" class="parameters_annotations">
 952 </colgroup>
 953 <tbody><tr>
 954 <td class="parameter_name"><p>face</p></td>
 955 <td class="parameter_description"><p>a face.</p></td>
 956 <td class="parameter_annotations"> </td>
 957 </tr></tbody>
 958 </table></div>
 959 </div>
 960 <div class="refsect3">
 961 <a name="hb-font-create.returns"></a><h4>Returns</h4>
 962 <p>The new font object. </p>
 963 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
 964 </div>
 965 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
 966 </div>
 967 <hr>
 968 <div class="refsect2">
 969 <a name="hb-font-create-sub-font"></a><h3>hb_font_create_sub_font ()</h3>
 970 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
 971 hb_font_create_sub_font (<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> *parent</code></em>);</pre>
 972 <p>Constructs a sub-font font object from the specified <em class="parameter"><code>parent</code></em>
 973  font,
 974 replicating the parent's properties.</p>
 975 <div class="refsect3">
 976 <a name="hb-font-create-sub-font.parameters"></a><h4>Parameters</h4>
 977 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 978 <colgroup>
 979 <col width="150px" class="parameters_name">
 980 <col class="parameters_description">
 981 <col width="200px" class="parameters_annotations">
 982 </colgroup>
 983 <tbody><tr>
 984 <td class="parameter_name"><p>parent</p></td>
 985 <td class="parameter_description"><p>The parent font object</p></td>
 986 <td class="parameter_annotations"> </td>
 987 </tr></tbody>
 988 </table></div>
 989 </div>
 990 <div class="refsect3">
 991 <a name="hb-font-create-sub-font.returns"></a><h4>Returns</h4>
 992 <p>The new sub-font font object. </p>
 993 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
 994 </div>
 995 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
 996 </div>
 997 <hr>
 998 <div class="refsect2">
 999 <a name="hb-font-destroy"></a><h3>hb_font_destroy ()</h3>
1000 <pre class="programlisting"><span class="returnvalue">void</span>
1001 hb_font_destroy (<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>);</pre>
1002 <p>Decreases the reference count on the given font object. When the
1003 reference count reaches zero, the font is destroyed,
1004 freeing all memory.</p>
1005 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
1006 <div class="refsect3">
1007 <a name="hb-font-destroy.parameters"></a><h4>Parameters</h4>
1008 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1009 <colgroup>
1010 <col width="150px" class="parameters_name">
1011 <col class="parameters_description">
1012 <col width="200px" class="parameters_annotations">
1013 </colgroup>
1014 <tbody><tr>
1015 <td class="parameter_name"><p>font</p></td>
1016 <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>
1017 <td class="parameter_annotations"> </td>
1018 </tr></tbody>
1019 </table></div>
1020 </div>
1021 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1022 </div>
1023 <hr>
1024 <div class="refsect2">
1025 <a name="hb-font-funcs-create"></a><h3>hb_font_funcs_create ()</h3>
1026 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
1027 hb_font_funcs_create (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
1028 <p>Creates a new <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> structure of font functions.</p>
1029 <p><span class="annotation">[Xconstructor]</span></p>
1030 <div class="refsect3">
1031 <a name="hb-font-funcs-create.returns"></a><h4>Returns</h4>
1032 <p>The font-functions structure. </p>
1033 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
1034 </div>
1035 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1036 </div>
1037 <hr>
1038 <div class="refsect2">
1039 <a name="hb-font-funcs-destroy"></a><h3>hb_font_funcs_destroy ()</h3>
1040 <pre class="programlisting"><span class="returnvalue">void</span>
1041 hb_font_funcs_destroy (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>);</pre>
1042 <p>Decreases the reference count on a font-functions structure. When
1043 the reference count reaches zero, the font-functions structure is
1044 destroyed, freeing all memory.</p>
1045 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
1046 <div class="refsect3">
1047 <a name="hb-font-funcs-destroy.parameters"></a><h4>Parameters</h4>
1048 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1049 <colgroup>
1050 <col width="150px" class="parameters_name">
1051 <col class="parameters_description">
1052 <col width="200px" class="parameters_annotations">
1053 </colgroup>
1054 <tbody><tr>
1055 <td class="parameter_name"><p>ffuncs</p></td>
1056 <td class="parameter_description"><p>The font-functions structure</p></td>
1057 <td class="parameter_annotations"> </td>
1058 </tr></tbody>
1059 </table></div>
1060 </div>
1061 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1062 </div>
1063 <hr>
1064 <div class="refsect2">
1065 <a name="hb-font-funcs-get-empty"></a><h3>hb_font_funcs_get_empty ()</h3>
1066 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
1067 hb_font_funcs_get_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
1068 <p>Fetches an empty font-functions structure.</p>
1069 <div class="refsect3">
1070 <a name="hb-font-funcs-get-empty.returns"></a><h4>Returns</h4>
1071 <p>The font-functions structure. </p>
1072 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
1073 </div>
1074 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1075 </div>
1076 <hr>
1077 <div class="refsect2">
1078 <a name="hb-font-funcs-get-user-data"></a><h3>hb_font_funcs_get_user_data ()</h3>
1079 <pre class="programlisting"><span class="returnvalue">void</span> *
1080 hb_font_funcs_get_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1081                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t" title="hb_user_data_key_t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>);</pre>
1082 <p>Fetches the user data associated with the specified key,
1083 attached to the specified font-functions structure.</p>
1084 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
1085 <div class="refsect3">
1086 <a name="hb-font-funcs-get-user-data.parameters"></a><h4>Parameters</h4>
1087 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1088 <colgroup>
1089 <col width="150px" class="parameters_name">
1090 <col class="parameters_description">
1091 <col width="200px" class="parameters_annotations">
1092 </colgroup>
1093 <tbody>
1094 <tr>
1095 <td class="parameter_name"><p>ffuncs</p></td>
1096 <td class="parameter_description"><p>The font-functions structure</p></td>
1097 <td class="parameter_annotations"> </td>
1098 </tr>
1099 <tr>
1100 <td class="parameter_name"><p>key</p></td>
1101 <td class="parameter_description"><p>The user-data key to query</p></td>
1102 <td class="parameter_annotations"> </td>
1103 </tr>
1104 </tbody>
1105 </table></div>
1106 </div>
1107 <div class="refsect3">
1108 <a name="hb-font-funcs-get-user-data.returns"></a><h4>Returns</h4>
1109 <p>A pointer to the user data. </p>
1110 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
1111 </div>
1112 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1113 </div>
1114 <hr>
1115 <div class="refsect2">
1116 <a name="hb-font-funcs-is-immutable"></a><h3>hb_font_funcs_is_immutable ()</h3>
1117 <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>
1118 hb_font_funcs_is_immutable (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>);</pre>
1119 <p>Tests whether a font-functions structure is immutable.</p>
1120 <div class="refsect3">
1121 <a name="hb-font-funcs-is-immutable.parameters"></a><h4>Parameters</h4>
1122 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1123 <colgroup>
1124 <col width="150px" class="parameters_name">
1125 <col class="parameters_description">
1126 <col width="200px" class="parameters_annotations">
1127 </colgroup>
1128 <tbody><tr>
1129 <td class="parameter_name"><p>ffuncs</p></td>
1130 <td class="parameter_description"><p>The font-functions structure</p></td>
1131 <td class="parameter_annotations"> </td>
1132 </tr></tbody>
1133 </table></div>
1134 </div>
1135 <div class="refsect3">
1136 <a name="hb-font-funcs-is-immutable.returns"></a><h4>Returns</h4>
1137 <p> <code class="literal">true</code> if <em class="parameter"><code>ffuncs</code></em>
1138 is immutable, <code class="literal">false</code> otherwise</p>
1139 </div>
1140 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1141 </div>
1142 <hr>
1143 <div class="refsect2">
1144 <a name="hb-font-funcs-make-immutable"></a><h3>hb_font_funcs_make_immutable ()</h3>
1145 <pre class="programlisting"><span class="returnvalue">void</span>
1146 hb_font_funcs_make_immutable (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>);</pre>
1147 <p>Makes a font-functions structure immutable.</p>
1148 <div class="refsect3">
1149 <a name="hb-font-funcs-make-immutable.parameters"></a><h4>Parameters</h4>
1150 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1151 <colgroup>
1152 <col width="150px" class="parameters_name">
1153 <col class="parameters_description">
1154 <col width="200px" class="parameters_annotations">
1155 </colgroup>
1156 <tbody><tr>
1157 <td class="parameter_name"><p>ffuncs</p></td>
1158 <td class="parameter_description"><p>The font-functions structure</p></td>
1159 <td class="parameter_annotations"> </td>
1160 </tr></tbody>
1161 </table></div>
1162 </div>
1163 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1164 </div>
1165 <hr>
1166 <div class="refsect2">
1167 <a name="hb-font-funcs-reference"></a><h3>hb_font_funcs_reference ()</h3>
1168 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="returnvalue">hb_font_funcs_t</span></a> *
1169 hb_font_funcs_reference (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>);</pre>
1170 <p>Increases the reference count on a font-functions structure.</p>
1171 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
1172 <div class="refsect3">
1173 <a name="hb-font-funcs-reference.parameters"></a><h4>Parameters</h4>
1174 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1175 <colgroup>
1176 <col width="150px" class="parameters_name">
1177 <col class="parameters_description">
1178 <col width="200px" class="parameters_annotations">
1179 </colgroup>
1180 <tbody><tr>
1181 <td class="parameter_name"><p>ffuncs</p></td>
1182 <td class="parameter_description"><p>The font-functions structure</p></td>
1183 <td class="parameter_annotations"> </td>
1184 </tr></tbody>
1185 </table></div>
1186 </div>
1187 <div class="refsect3">
1188 <a name="hb-font-funcs-reference.returns"></a><h4>Returns</h4>
1189 <p> The font-functions structure</p>
1190 </div>
1191 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1192 </div>
1193 <hr>
1194 <div class="refsect2">
1195 <a name="hb-font-funcs-set-glyph-contour-point-func"></a><h3>hb_font_funcs_set_glyph_contour_point_func ()</h3>
1196 <pre class="programlisting"><span class="returnvalue">void</span>
1197 hb_font_funcs_set_glyph_contour_point_func
1198                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1199                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-contour-point-func-t" title="hb_font_get_glyph_contour_point_func_t ()"><span class="type">hb_font_get_glyph_contour_point_func_t</span></a> func</code></em>,
1200                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1201                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1202 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-contour-point-func-t" title="hb_font_get_glyph_contour_point_func_t ()"><span class="type">hb_font_get_glyph_contour_point_func_t</span></a>.</p>
1203 <div class="refsect3">
1204 <a name="hb-font-funcs-set-glyph-contour-point-func.parameters"></a><h4>Parameters</h4>
1205 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1206 <colgroup>
1207 <col width="150px" class="parameters_name">
1208 <col class="parameters_description">
1209 <col width="200px" class="parameters_annotations">
1210 </colgroup>
1211 <tbody>
1212 <tr>
1213 <td class="parameter_name"><p>ffuncs</p></td>
1214 <td class="parameter_description"><p>A font-function structure</p></td>
1215 <td class="parameter_annotations"> </td>
1216 </tr>
1217 <tr>
1218 <td class="parameter_name"><p>func</p></td>
1219 <td class="parameter_description"><p>The callback function to assign. </p></td>
1220 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1221 </tr>
1222 <tr>
1223 <td class="parameter_name"><p>user_data</p></td>
1224 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1225 </p></td>
1226 <td class="parameter_annotations"> </td>
1227 </tr>
1228 <tr>
1229 <td class="parameter_name"><p>destroy</p></td>
1230 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1231 is not needed anymore. </p></td>
1232 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1233 </tr>
1234 </tbody>
1235 </table></div>
1236 </div>
1237 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1238 </div>
1239 <hr>
1240 <div class="refsect2">
1241 <a name="hb-font-funcs-set-glyph-extents-func"></a><h3>hb_font_funcs_set_glyph_extents_func ()</h3>
1242 <pre class="programlisting"><span class="returnvalue">void</span>
1243 hb_font_funcs_set_glyph_extents_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1244                                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-extents-func-t" title="hb_font_get_glyph_extents_func_t ()"><span class="type">hb_font_get_glyph_extents_func_t</span></a> func</code></em>,
1245                                       <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1246                                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1247 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-extents-func-t" title="hb_font_get_glyph_extents_func_t ()"><span class="type">hb_font_get_glyph_extents_func_t</span></a>.</p>
1248 <div class="refsect3">
1249 <a name="hb-font-funcs-set-glyph-extents-func.parameters"></a><h4>Parameters</h4>
1250 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1251 <colgroup>
1252 <col width="150px" class="parameters_name">
1253 <col class="parameters_description">
1254 <col width="200px" class="parameters_annotations">
1255 </colgroup>
1256 <tbody>
1257 <tr>
1258 <td class="parameter_name"><p>ffuncs</p></td>
1259 <td class="parameter_description"><p>A font-function structure</p></td>
1260 <td class="parameter_annotations"> </td>
1261 </tr>
1262 <tr>
1263 <td class="parameter_name"><p>func</p></td>
1264 <td class="parameter_description"><p>The callback function to assign. </p></td>
1265 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1266 </tr>
1267 <tr>
1268 <td class="parameter_name"><p>user_data</p></td>
1269 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1270 </p></td>
1271 <td class="parameter_annotations"> </td>
1272 </tr>
1273 <tr>
1274 <td class="parameter_name"><p>destroy</p></td>
1275 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1276 is not needed anymore. </p></td>
1277 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1278 </tr>
1279 </tbody>
1280 </table></div>
1281 </div>
1282 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1283 </div>
1284 <hr>
1285 <div class="refsect2">
1286 <a name="hb-font-funcs-set-glyph-from-name-func"></a><h3>hb_font_funcs_set_glyph_from_name_func ()</h3>
1287 <pre class="programlisting"><span class="returnvalue">void</span>
1288 hb_font_funcs_set_glyph_from_name_func
1289                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1290                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-from-name-func-t" title="hb_font_get_glyph_from_name_func_t ()"><span class="type">hb_font_get_glyph_from_name_func_t</span></a> func</code></em>,
1291                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1292                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1293 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-from-name-func-t" title="hb_font_get_glyph_from_name_func_t ()"><span class="type">hb_font_get_glyph_from_name_func_t</span></a>.</p>
1294 <div class="refsect3">
1295 <a name="hb-font-funcs-set-glyph-from-name-func.parameters"></a><h4>Parameters</h4>
1296 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1297 <colgroup>
1298 <col width="150px" class="parameters_name">
1299 <col class="parameters_description">
1300 <col width="200px" class="parameters_annotations">
1301 </colgroup>
1302 <tbody>
1303 <tr>
1304 <td class="parameter_name"><p>ffuncs</p></td>
1305 <td class="parameter_description"><p>A font-function structure</p></td>
1306 <td class="parameter_annotations"> </td>
1307 </tr>
1308 <tr>
1309 <td class="parameter_name"><p>func</p></td>
1310 <td class="parameter_description"><p>The callback function to assign. </p></td>
1311 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1312 </tr>
1313 <tr>
1314 <td class="parameter_name"><p>user_data</p></td>
1315 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1316 </p></td>
1317 <td class="parameter_annotations"> </td>
1318 </tr>
1319 <tr>
1320 <td class="parameter_name"><p>destroy</p></td>
1321 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1322 is not needed anymore. </p></td>
1323 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1324 </tr>
1325 </tbody>
1326 </table></div>
1327 </div>
1328 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1329 </div>
1330 <hr>
1331 <div class="refsect2">
1332 <a name="hb-font-funcs-set-glyph-h-advance-func"></a><h3>hb_font_funcs_set_glyph_h_advance_func ()</h3>
1333 <pre class="programlisting"><span class="returnvalue">void</span>
1334 hb_font_funcs_set_glyph_h_advance_func
1335                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1336                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advance-func-t" title="hb_font_get_glyph_h_advance_func_t"><span class="type">hb_font_get_glyph_h_advance_func_t</span></a> func</code></em>,
1337                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1338                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1339 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advance-func-t" title="hb_font_get_glyph_h_advance_func_t"><span class="type">hb_font_get_glyph_h_advance_func_t</span></a>.</p>
1340 <div class="refsect3">
1341 <a name="hb-font-funcs-set-glyph-h-advance-func.parameters"></a><h4>Parameters</h4>
1342 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1343 <colgroup>
1344 <col width="150px" class="parameters_name">
1345 <col class="parameters_description">
1346 <col width="200px" class="parameters_annotations">
1347 </colgroup>
1348 <tbody>
1349 <tr>
1350 <td class="parameter_name"><p>ffuncs</p></td>
1351 <td class="parameter_description"><p>A font-function structure</p></td>
1352 <td class="parameter_annotations"> </td>
1353 </tr>
1354 <tr>
1355 <td class="parameter_name"><p>func</p></td>
1356 <td class="parameter_description"><p>The callback function to assign. </p></td>
1357 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1358 </tr>
1359 <tr>
1360 <td class="parameter_name"><p>user_data</p></td>
1361 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1362 </p></td>
1363 <td class="parameter_annotations"> </td>
1364 </tr>
1365 <tr>
1366 <td class="parameter_name"><p>destroy</p></td>
1367 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1368 is not needed anymore. </p></td>
1369 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1370 </tr>
1371 </tbody>
1372 </table></div>
1373 </div>
1374 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1375 </div>
1376 <hr>
1377 <div class="refsect2">
1378 <a name="hb-font-funcs-set-glyph-h-advances-func"></a><h3>hb_font_funcs_set_glyph_h_advances_func ()</h3>
1379 <pre class="programlisting"><span class="returnvalue">void</span>
1380 hb_font_funcs_set_glyph_h_advances_func
1381                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1382                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advances-func-t" title="hb_font_get_glyph_h_advances_func_t"><span class="type">hb_font_get_glyph_h_advances_func_t</span></a> func</code></em>,
1383                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1384                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1385 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-advances-func-t" title="hb_font_get_glyph_h_advances_func_t"><span class="type">hb_font_get_glyph_h_advances_func_t</span></a>.</p>
1386 <div class="refsect3">
1387 <a name="hb-font-funcs-set-glyph-h-advances-func.parameters"></a><h4>Parameters</h4>
1388 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1389 <colgroup>
1390 <col width="150px" class="parameters_name">
1391 <col class="parameters_description">
1392 <col width="200px" class="parameters_annotations">
1393 </colgroup>
1394 <tbody>
1395 <tr>
1396 <td class="parameter_name"><p>ffuncs</p></td>
1397 <td class="parameter_description"><p>A font-function structure</p></td>
1398 <td class="parameter_annotations"> </td>
1399 </tr>
1400 <tr>
1401 <td class="parameter_name"><p>func</p></td>
1402 <td class="parameter_description"><p>The callback function to assign. </p></td>
1403 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1404 </tr>
1405 <tr>
1406 <td class="parameter_name"><p>user_data</p></td>
1407 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1408 </p></td>
1409 <td class="parameter_annotations"> </td>
1410 </tr>
1411 <tr>
1412 <td class="parameter_name"><p>destroy</p></td>
1413 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1414 is not needed anymore. </p></td>
1415 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1416 </tr>
1417 </tbody>
1418 </table></div>
1419 </div>
1420 <p class="since">Since: <a class="link" href="api-index-1-8-6.html#api-index-1.8.6">1.8.6</a></p>
1421 </div>
1422 <hr>
1423 <div class="refsect2">
1424 <a name="hb-font-funcs-set-glyph-h-kerning-func"></a><h3>hb_font_funcs_set_glyph_h_kerning_func ()</h3>
1425 <pre class="programlisting"><span class="returnvalue">void</span>
1426 hb_font_funcs_set_glyph_h_kerning_func
1427                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1428                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-kerning-func-t" title="hb_font_get_glyph_h_kerning_func_t"><span class="type">hb_font_get_glyph_h_kerning_func_t</span></a> func</code></em>,
1429                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1430                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1431 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-kerning-func-t" title="hb_font_get_glyph_h_kerning_func_t"><span class="type">hb_font_get_glyph_h_kerning_func_t</span></a>.</p>
1432 <div class="refsect3">
1433 <a name="hb-font-funcs-set-glyph-h-kerning-func.parameters"></a><h4>Parameters</h4>
1434 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1435 <colgroup>
1436 <col width="150px" class="parameters_name">
1437 <col class="parameters_description">
1438 <col width="200px" class="parameters_annotations">
1439 </colgroup>
1440 <tbody>
1441 <tr>
1442 <td class="parameter_name"><p>ffuncs</p></td>
1443 <td class="parameter_description"><p>A font-function structure</p></td>
1444 <td class="parameter_annotations"> </td>
1445 </tr>
1446 <tr>
1447 <td class="parameter_name"><p>func</p></td>
1448 <td class="parameter_description"><p>The callback function to assign. </p></td>
1449 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1450 </tr>
1451 <tr>
1452 <td class="parameter_name"><p>user_data</p></td>
1453 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1454 </p></td>
1455 <td class="parameter_annotations"> </td>
1456 </tr>
1457 <tr>
1458 <td class="parameter_name"><p>destroy</p></td>
1459 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1460 is not needed anymore. </p></td>
1461 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1462 </tr>
1463 </tbody>
1464 </table></div>
1465 </div>
1466 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1467 </div>
1468 <hr>
1469 <div class="refsect2">
1470 <a name="hb-font-funcs-set-glyph-h-origin-func"></a><h3>hb_font_funcs_set_glyph_h_origin_func ()</h3>
1471 <pre class="programlisting"><span class="returnvalue">void</span>
1472 hb_font_funcs_set_glyph_h_origin_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1473                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-origin-func-t" title="hb_font_get_glyph_h_origin_func_t"><span class="type">hb_font_get_glyph_h_origin_func_t</span></a> func</code></em>,
1474                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1475                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1476 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-h-origin-func-t" title="hb_font_get_glyph_h_origin_func_t"><span class="type">hb_font_get_glyph_h_origin_func_t</span></a>.</p>
1477 <div class="refsect3">
1478 <a name="hb-font-funcs-set-glyph-h-origin-func.parameters"></a><h4>Parameters</h4>
1479 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1480 <colgroup>
1481 <col width="150px" class="parameters_name">
1482 <col class="parameters_description">
1483 <col width="200px" class="parameters_annotations">
1484 </colgroup>
1485 <tbody>
1486 <tr>
1487 <td class="parameter_name"><p>ffuncs</p></td>
1488 <td class="parameter_description"><p>A font-function structure</p></td>
1489 <td class="parameter_annotations"> </td>
1490 </tr>
1491 <tr>
1492 <td class="parameter_name"><p>func</p></td>
1493 <td class="parameter_description"><p>The callback function to assign. </p></td>
1494 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1495 </tr>
1496 <tr>
1497 <td class="parameter_name"><p>user_data</p></td>
1498 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1499 </p></td>
1500 <td class="parameter_annotations"> </td>
1501 </tr>
1502 <tr>
1503 <td class="parameter_name"><p>destroy</p></td>
1504 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1505 is not needed anymore. </p></td>
1506 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1507 </tr>
1508 </tbody>
1509 </table></div>
1510 </div>
1511 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1512 </div>
1513 <hr>
1514 <div class="refsect2">
1515 <a name="hb-font-funcs-set-glyph-name-func"></a><h3>hb_font_funcs_set_glyph_name_func ()</h3>
1516 <pre class="programlisting"><span class="returnvalue">void</span>
1517 hb_font_funcs_set_glyph_name_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1518                                    <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-name-func-t" title="hb_font_get_glyph_name_func_t ()"><span class="type">hb_font_get_glyph_name_func_t</span></a> func</code></em>,
1519                                    <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1520                                    <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1521 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-name-func-t" title="hb_font_get_glyph_name_func_t ()"><span class="type">hb_font_get_glyph_name_func_t</span></a>.</p>
1522 <div class="refsect3">
1523 <a name="hb-font-funcs-set-glyph-name-func.parameters"></a><h4>Parameters</h4>
1524 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1525 <colgroup>
1526 <col width="150px" class="parameters_name">
1527 <col class="parameters_description">
1528 <col width="200px" class="parameters_annotations">
1529 </colgroup>
1530 <tbody>
1531 <tr>
1532 <td class="parameter_name"><p>ffuncs</p></td>
1533 <td class="parameter_description"><p>A font-function structure</p></td>
1534 <td class="parameter_annotations"> </td>
1535 </tr>
1536 <tr>
1537 <td class="parameter_name"><p>func</p></td>
1538 <td class="parameter_description"><p>The callback function to assign. </p></td>
1539 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1540 </tr>
1541 <tr>
1542 <td class="parameter_name"><p>user_data</p></td>
1543 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1544 </p></td>
1545 <td class="parameter_annotations"> </td>
1546 </tr>
1547 <tr>
1548 <td class="parameter_name"><p>destroy</p></td>
1549 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1550 is not needed anymore. </p></td>
1551 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1552 </tr>
1553 </tbody>
1554 </table></div>
1555 </div>
1556 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1557 </div>
1558 <hr>
1559 <div class="refsect2">
1560 <a name="hb-font-funcs-set-glyph-v-advance-func"></a><h3>hb_font_funcs_set_glyph_v_advance_func ()</h3>
1561 <pre class="programlisting"><span class="returnvalue">void</span>
1562 hb_font_funcs_set_glyph_v_advance_func
1563                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1564                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advance-func-t" title="hb_font_get_glyph_v_advance_func_t"><span class="type">hb_font_get_glyph_v_advance_func_t</span></a> func</code></em>,
1565                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1566                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1567 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advance-func-t" title="hb_font_get_glyph_v_advance_func_t"><span class="type">hb_font_get_glyph_v_advance_func_t</span></a>.</p>
1568 <div class="refsect3">
1569 <a name="hb-font-funcs-set-glyph-v-advance-func.parameters"></a><h4>Parameters</h4>
1570 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1571 <colgroup>
1572 <col width="150px" class="parameters_name">
1573 <col class="parameters_description">
1574 <col width="200px" class="parameters_annotations">
1575 </colgroup>
1576 <tbody>
1577 <tr>
1578 <td class="parameter_name"><p>ffuncs</p></td>
1579 <td class="parameter_description"><p>A font-function structure</p></td>
1580 <td class="parameter_annotations"> </td>
1581 </tr>
1582 <tr>
1583 <td class="parameter_name"><p>func</p></td>
1584 <td class="parameter_description"><p>The callback function to assign. </p></td>
1585 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1586 </tr>
1587 <tr>
1588 <td class="parameter_name"><p>user_data</p></td>
1589 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1590 </p></td>
1591 <td class="parameter_annotations"> </td>
1592 </tr>
1593 <tr>
1594 <td class="parameter_name"><p>destroy</p></td>
1595 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1596 is not needed anymore. </p></td>
1597 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1598 </tr>
1599 </tbody>
1600 </table></div>
1601 </div>
1602 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1603 </div>
1604 <hr>
1605 <div class="refsect2">
1606 <a name="hb-font-funcs-set-glyph-v-advances-func"></a><h3>hb_font_funcs_set_glyph_v_advances_func ()</h3>
1607 <pre class="programlisting"><span class="returnvalue">void</span>
1608 hb_font_funcs_set_glyph_v_advances_func
1609                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1610                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advances-func-t" title="hb_font_get_glyph_v_advances_func_t"><span class="type">hb_font_get_glyph_v_advances_func_t</span></a> func</code></em>,
1611                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1612                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1613 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-advances-func-t" title="hb_font_get_glyph_v_advances_func_t"><span class="type">hb_font_get_glyph_v_advances_func_t</span></a>.</p>
1614 <div class="refsect3">
1615 <a name="hb-font-funcs-set-glyph-v-advances-func.parameters"></a><h4>Parameters</h4>
1616 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1617 <colgroup>
1618 <col width="150px" class="parameters_name">
1619 <col class="parameters_description">
1620 <col width="200px" class="parameters_annotations">
1621 </colgroup>
1622 <tbody>
1623 <tr>
1624 <td class="parameter_name"><p>ffuncs</p></td>
1625 <td class="parameter_description"><p>A font-function structure</p></td>
1626 <td class="parameter_annotations"> </td>
1627 </tr>
1628 <tr>
1629 <td class="parameter_name"><p>func</p></td>
1630 <td class="parameter_description"><p>The callback function to assign. </p></td>
1631 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1632 </tr>
1633 <tr>
1634 <td class="parameter_name"><p>user_data</p></td>
1635 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1636 </p></td>
1637 <td class="parameter_annotations"> </td>
1638 </tr>
1639 <tr>
1640 <td class="parameter_name"><p>destroy</p></td>
1641 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1642 is not needed anymore. </p></td>
1643 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1644 </tr>
1645 </tbody>
1646 </table></div>
1647 </div>
1648 <p class="since">Since: <a class="link" href="api-index-1-8-6.html#api-index-1.8.6">1.8.6</a></p>
1649 </div>
1650 <hr>
1651 <div class="refsect2">
1652 <a name="hb-font-funcs-set-glyph-v-origin-func"></a><h3>hb_font_funcs_set_glyph_v_origin_func ()</h3>
1653 <pre class="programlisting"><span class="returnvalue">void</span>
1654 hb_font_funcs_set_glyph_v_origin_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1655                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-origin-func-t" title="hb_font_get_glyph_v_origin_func_t"><span class="type">hb_font_get_glyph_v_origin_func_t</span></a> func</code></em>,
1656                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1657                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1658 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph-v-origin-func-t" title="hb_font_get_glyph_v_origin_func_t"><span class="type">hb_font_get_glyph_v_origin_func_t</span></a>.</p>
1659 <div class="refsect3">
1660 <a name="hb-font-funcs-set-glyph-v-origin-func.parameters"></a><h4>Parameters</h4>
1661 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1662 <colgroup>
1663 <col width="150px" class="parameters_name">
1664 <col class="parameters_description">
1665 <col width="200px" class="parameters_annotations">
1666 </colgroup>
1667 <tbody>
1668 <tr>
1669 <td class="parameter_name"><p>ffuncs</p></td>
1670 <td class="parameter_description"><p>A font-function structure</p></td>
1671 <td class="parameter_annotations"> </td>
1672 </tr>
1673 <tr>
1674 <td class="parameter_name"><p>func</p></td>
1675 <td class="parameter_description"><p>The callback function to assign. </p></td>
1676 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1677 </tr>
1678 <tr>
1679 <td class="parameter_name"><p>user_data</p></td>
1680 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1681 </p></td>
1682 <td class="parameter_annotations"> </td>
1683 </tr>
1684 <tr>
1685 <td class="parameter_name"><p>destroy</p></td>
1686 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1687 is not needed anymore. </p></td>
1688 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1689 </tr>
1690 </tbody>
1691 </table></div>
1692 </div>
1693 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1694 </div>
1695 <hr>
1696 <div class="refsect2">
1697 <a name="hb-font-funcs-set-nominal-glyph-func"></a><h3>hb_font_funcs_set_nominal_glyph_func ()</h3>
1698 <pre class="programlisting"><span class="returnvalue">void</span>
1699 hb_font_funcs_set_nominal_glyph_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1700                                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyph-func-t" title="hb_font_get_nominal_glyph_func_t ()"><span class="type">hb_font_get_nominal_glyph_func_t</span></a> func</code></em>,
1701                                       <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1702                                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1703 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyph-func-t" title="hb_font_get_nominal_glyph_func_t ()"><span class="type">hb_font_get_nominal_glyph_func_t</span></a>.</p>
1704 <div class="refsect3">
1705 <a name="hb-font-funcs-set-nominal-glyph-func.parameters"></a><h4>Parameters</h4>
1706 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1707 <colgroup>
1708 <col width="150px" class="parameters_name">
1709 <col class="parameters_description">
1710 <col width="200px" class="parameters_annotations">
1711 </colgroup>
1712 <tbody>
1713 <tr>
1714 <td class="parameter_name"><p>ffuncs</p></td>
1715 <td class="parameter_description"><p>A font-function structure</p></td>
1716 <td class="parameter_annotations"> </td>
1717 </tr>
1718 <tr>
1719 <td class="parameter_name"><p>func</p></td>
1720 <td class="parameter_description"><p>The callback function to assign. </p></td>
1721 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1722 </tr>
1723 <tr>
1724 <td class="parameter_name"><p>user_data</p></td>
1725 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1726 </p></td>
1727 <td class="parameter_annotations"> </td>
1728 </tr>
1729 <tr>
1730 <td class="parameter_name"><p>destroy</p></td>
1731 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1732 is not needed anymore. </p></td>
1733 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1734 </tr>
1735 </tbody>
1736 </table></div>
1737 </div>
1738 <p class="since">Since: <a class="link" href="api-index-1-2-3.html#api-index-1.2.3">1.2.3</a></p>
1739 </div>
1740 <hr>
1741 <div class="refsect2">
1742 <a name="hb-font-funcs-set-nominal-glyphs-func"></a><h3>hb_font_funcs_set_nominal_glyphs_func ()</h3>
1743 <pre class="programlisting"><span class="returnvalue">void</span>
1744 hb_font_funcs_set_nominal_glyphs_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1745                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyphs-func-t" title="hb_font_get_nominal_glyphs_func_t ()"><span class="type">hb_font_get_nominal_glyphs_func_t</span></a> func</code></em>,
1746                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1747                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1748 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyphs-func-t" title="hb_font_get_nominal_glyphs_func_t ()"><span class="type">hb_font_get_nominal_glyphs_func_t</span></a>.</p>
1749 <div class="refsect3">
1750 <a name="hb-font-funcs-set-nominal-glyphs-func.parameters"></a><h4>Parameters</h4>
1751 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1752 <colgroup>
1753 <col width="150px" class="parameters_name">
1754 <col class="parameters_description">
1755 <col width="200px" class="parameters_annotations">
1756 </colgroup>
1757 <tbody>
1758 <tr>
1759 <td class="parameter_name"><p>ffuncs</p></td>
1760 <td class="parameter_description"><p>A font-function structure</p></td>
1761 <td class="parameter_annotations"> </td>
1762 </tr>
1763 <tr>
1764 <td class="parameter_name"><p>func</p></td>
1765 <td class="parameter_description"><p>The callback function to assign. </p></td>
1766 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1767 </tr>
1768 <tr>
1769 <td class="parameter_name"><p>user_data</p></td>
1770 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1771 </p></td>
1772 <td class="parameter_annotations"> </td>
1773 </tr>
1774 <tr>
1775 <td class="parameter_name"><p>destroy</p></td>
1776 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1777 is not needed anymore. </p></td>
1778 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1779 </tr>
1780 </tbody>
1781 </table></div>
1782 </div>
1783 <p class="since">Since: <a class="link" href="api-index-2-0-0.html#api-index-2.0.0">2.0.0</a></p>
1784 </div>
1785 <hr>
1786 <div class="refsect2">
1787 <a name="hb-font-funcs-set-user-data"></a><h3>hb_font_funcs_set_user_data ()</h3>
1788 <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>
1789 hb_font_funcs_set_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1790                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t" title="hb_user_data_key_t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>,
1791                              <em class="parameter"><code><span class="type">void</span> *data</code></em>,
1792                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>,
1793                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="type">hb_bool_t</span></a> replace</code></em>);</pre>
1794 <p>Attaches a user-data key/data pair to the specified font-functions structure.</p>
1795 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
1796 <div class="refsect3">
1797 <a name="hb-font-funcs-set-user-data.parameters"></a><h4>Parameters</h4>
1798 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1799 <colgroup>
1800 <col width="150px" class="parameters_name">
1801 <col class="parameters_description">
1802 <col width="200px" class="parameters_annotations">
1803 </colgroup>
1804 <tbody>
1805 <tr>
1806 <td class="parameter_name"><p>ffuncs</p></td>
1807 <td class="parameter_description"><p>The font-functions structure</p></td>
1808 <td class="parameter_annotations"> </td>
1809 </tr>
1810 <tr>
1811 <td class="parameter_name"><p>key</p></td>
1812 <td class="parameter_description"><p>The user-data key to set</p></td>
1813 <td class="parameter_annotations"> </td>
1814 </tr>
1815 <tr>
1816 <td class="parameter_name"><p>data</p></td>
1817 <td class="parameter_description"><p>A pointer to the user data set</p></td>
1818 <td class="parameter_annotations"> </td>
1819 </tr>
1820 <tr>
1821 <td class="parameter_name"><p>destroy</p></td>
1822 <td class="parameter_description"><p>A callback to call when <em class="parameter"><code>data</code></em>
1823 is not needed anymore. </p></td>
1824 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1825 </tr>
1826 <tr>
1827 <td class="parameter_name"><p>replace</p></td>
1828 <td class="parameter_description"><p>Whether to replace an existing data with the same key</p></td>
1829 <td class="parameter_annotations"> </td>
1830 </tr>
1831 </tbody>
1832 </table></div>
1833 </div>
1834 <div class="refsect3">
1835 <a name="hb-font-funcs-set-user-data.returns"></a><h4>Returns</h4>
1836 <p> <code class="literal">true</code> if success, <code class="literal">false</code> otherwise</p>
1837 </div>
1838 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1839 </div>
1840 <hr>
1841 <div class="refsect2">
1842 <a name="hb-font-funcs-set-variation-glyph-func"></a><h3>hb_font_funcs_set_variation_glyph_func ()</h3>
1843 <pre class="programlisting"><span class="returnvalue">void</span>
1844 hb_font_funcs_set_variation_glyph_func
1845                                (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
1846                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph-func-t" title="hb_font_get_variation_glyph_func_t ()"><span class="type">hb_font_get_variation_glyph_func_t</span></a> func</code></em>,
1847                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
1848                                 <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
1849 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph-func-t" title="hb_font_get_variation_glyph_func_t ()"><span class="type">hb_font_get_variation_glyph_func_t</span></a>.</p>
1850 <div class="refsect3">
1851 <a name="hb-font-funcs-set-variation-glyph-func.parameters"></a><h4>Parameters</h4>
1852 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1853 <colgroup>
1854 <col width="150px" class="parameters_name">
1855 <col class="parameters_description">
1856 <col width="200px" class="parameters_annotations">
1857 </colgroup>
1858 <tbody>
1859 <tr>
1860 <td class="parameter_name"><p>ffuncs</p></td>
1861 <td class="parameter_description"><p>A font-function structure</p></td>
1862 <td class="parameter_annotations"> </td>
1863 </tr>
1864 <tr>
1865 <td class="parameter_name"><p>func</p></td>
1866 <td class="parameter_description"><p>The callback function to assign. </p></td>
1867 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
1868 </tr>
1869 <tr>
1870 <td class="parameter_name"><p>user_data</p></td>
1871 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
1872 </p></td>
1873 <td class="parameter_annotations"> </td>
1874 </tr>
1875 <tr>
1876 <td class="parameter_name"><p>destroy</p></td>
1877 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
1878 is not needed anymore. </p></td>
1879 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
1880 </tr>
1881 </tbody>
1882 </table></div>
1883 </div>
1884 <p class="since">Since: <a class="link" href="api-index-1-2-3.html#api-index-1.2.3">1.2.3</a></p>
1885 </div>
1886 <hr>
1887 <div class="refsect2">
1888 <a name="hb-font-get-empty"></a><h3>hb_font_get_empty ()</h3>
1889 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
1890 hb_font_get_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
1891 <p>Fetches the empty font object.</p>
1892 <div class="refsect3">
1893 <a name="hb-font-get-empty.returns"></a><h4>Returns</h4>
1894 <p>The empty font object. </p>
1895 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
1896 </div>
1897 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1898 </div>
1899 <hr>
1900 <div class="refsect2">
1901 <a name="hb-font-get-face"></a><h3>hb_font_get_face ()</h3>
1902 <pre class="programlisting"><a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="returnvalue">hb_face_t</span></a> *
1903 hb_font_get_face (<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>);</pre>
1904 <p>Fetches the face associated with the specified font object.</p>
1905 <div class="refsect3">
1906 <a name="hb-font-get-face.parameters"></a><h4>Parameters</h4>
1907 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1908 <colgroup>
1909 <col width="150px" class="parameters_name">
1910 <col class="parameters_description">
1911 <col width="200px" class="parameters_annotations">
1912 </colgroup>
1913 <tbody><tr>
1914 <td class="parameter_name"><p>font</p></td>
1915 <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>
1916 <td class="parameter_annotations"> </td>
1917 </tr></tbody>
1918 </table></div>
1919 </div>
1920 <div class="refsect3">
1921 <a name="hb-font-get-face.returns"></a><h4>Returns</h4>
1922 <p>The <a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> value. </p>
1923 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
1924 </div>
1925 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1926 </div>
1927 <hr>
1928 <div class="refsect2">
1929 <a name="hb-font-get-glyph"></a><h3>hb_font_get_glyph ()</h3>
1930 <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>
1931 hb_font_get_glyph (<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>,
1932                    <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> unicode</code></em>,
1933                    <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> variation_selector</code></em>,
1934                    <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>
1935 <p>Fetches the glyph ID for a Unicode code point in the specified
1936 font, with an optional variation selector.</p>
1937 <p>If <em class="parameter"><code>variation_selector</code></em>
1938  is 0, calls <a class="link" href="harfbuzz-hb-font.html#hb-font-get-nominal-glyph" title="hb_font_get_nominal_glyph ()"><code class="function">hb_font_get_nominal_glyph()</code></a>;
1939 otherwise calls <a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph" title="hb_font_get_variation_glyph ()"><code class="function">hb_font_get_variation_glyph()</code></a>.</p>
1940 <div class="refsect3">
1941 <a name="hb-font-get-glyph.parameters"></a><h4>Parameters</h4>
1942 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1943 <colgroup>
1944 <col width="150px" class="parameters_name">
1945 <col class="parameters_description">
1946 <col width="200px" class="parameters_annotations">
1947 </colgroup>
1948 <tbody>
1949 <tr>
1950 <td class="parameter_name"><p>font</p></td>
1951 <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>
1952 <td class="parameter_annotations"> </td>
1953 </tr>
1954 <tr>
1955 <td class="parameter_name"><p>unicode</p></td>
1956 <td class="parameter_description"><p>The Unicode code point to query</p></td>
1957 <td class="parameter_annotations"> </td>
1958 </tr>
1959 <tr>
1960 <td class="parameter_name"><p>variation_selector</p></td>
1961 <td class="parameter_description"><p>A variation-selector code point</p></td>
1962 <td class="parameter_annotations"> </td>
1963 </tr>
1964 <tr>
1965 <td class="parameter_name"><p>glyph</p></td>
1966 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
1967 <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>
1968 </tr>
1969 </tbody>
1970 </table></div>
1971 </div>
1972 <div class="refsect3">
1973 <a name="hb-font-get-glyph.returns"></a><h4>Returns</h4>
1974 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
1975 </div>
1976 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
1977 </div>
1978 <hr>
1979 <div class="refsect2">
1980 <a name="hb-font-get-glyph-advance-for-direction"></a><h3>hb_font_get_glyph_advance_for_direction ()</h3>
1981 <pre class="programlisting"><span class="returnvalue">void</span>
1982 hb_font_get_glyph_advance_for_direction
1983                                (<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>,
1984                                 <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>,
1985                                 <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>,
1986                                 <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> *x</code></em>,
1987                                 <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> *y</code></em>);</pre>
1988 <p>Fetches the advance for a glyph ID from the specified font,
1989 in a text segment of the specified direction.</p>
1990 <p>Calls the appropriate direction-specific variant (horizontal
1991 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
1992 .</p>
1993 <div class="refsect3">
1994 <a name="hb-font-get-glyph-advance-for-direction.parameters"></a><h4>Parameters</h4>
1995 <div class="informaltable"><table class="informaltable" width="100%" border="0">
1996 <colgroup>
1997 <col width="150px" class="parameters_name">
1998 <col class="parameters_description">
1999 <col width="200px" class="parameters_annotations">
2000 </colgroup>
2001 <tbody>
2002 <tr>
2003 <td class="parameter_name"><p>font</p></td>
2004 <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>
2005 <td class="parameter_annotations"> </td>
2006 </tr>
2007 <tr>
2008 <td class="parameter_name"><p>glyph</p></td>
2009 <td class="parameter_description"><p>The glyph ID to query</p></td>
2010 <td class="parameter_annotations"> </td>
2011 </tr>
2012 <tr>
2013 <td class="parameter_name"><p>direction</p></td>
2014 <td class="parameter_description"><p>The direction of the text segment</p></td>
2015 <td class="parameter_annotations"> </td>
2016 </tr>
2017 <tr>
2018 <td class="parameter_name"><p>x</p></td>
2019 <td class="parameter_description"><p>The horizontal advance retrieved. </p></td>
2020 <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>
2021 </tr>
2022 <tr>
2023 <td class="parameter_name"><p>y</p></td>
2024 <td class="parameter_description"><p>The vertical advance retrieved. </p></td>
2025 <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>
2026 </tr>
2027 </tbody>
2028 </table></div>
2029 </div>
2030 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2031 </div>
2032 <hr>
2033 <div class="refsect2">
2034 <a name="hb-font-get-glyph-advance-func-t"></a><h3>hb_font_get_glyph_advance_func_t ()</h3>
2035 <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>
2036 <span class="c_punctuation">(</span>*hb_font_get_glyph_advance_func_t<span class="c_punctuation">)</span> (<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>,
2037                                      <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2038                                      <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>,
2039                                      <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2040 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
2041 <p>This method should retrieve the advance for a specified glyph. The
2042 method must return 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>
2043 <div class="refsect3">
2044 <a name="hb-font-get-glyph-advance-func-t.parameters"></a><h4>Parameters</h4>
2045 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2046 <colgroup>
2047 <col width="150px" class="parameters_name">
2048 <col class="parameters_description">
2049 <col width="200px" class="parameters_annotations">
2050 </colgroup>
2051 <tbody>
2052 <tr>
2053 <td class="parameter_name"><p>font</p></td>
2054 <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>
2055 <td class="parameter_annotations"> </td>
2056 </tr>
2057 <tr>
2058 <td class="parameter_name"><p>font_data</p></td>
2059 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2060 user data pointer</p></td>
2061 <td class="parameter_annotations"> </td>
2062 </tr>
2063 <tr>
2064 <td class="parameter_name"><p>glyph</p></td>
2065 <td class="parameter_description"><p>The glyph ID to query</p></td>
2066 <td class="parameter_annotations"> </td>
2067 </tr>
2068 <tr>
2069 <td class="parameter_name"><p>user_data</p></td>
2070 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2071 <td class="parameter_annotations"> </td>
2072 </tr>
2073 </tbody>
2074 </table></div>
2075 </div>
2076 <div class="refsect3">
2077 <a name="hb-font-get-glyph-advance-func-t.returns"></a><h4>Returns</h4>
2078 <p> The advance of <em class="parameter"><code>glyph</code></em>
2079 within <em class="parameter"><code>font</code></em>
2080 </p>
2081 </div>
2082 </div>
2083 <hr>
2084 <div class="refsect2">
2085 <a name="hb-font-get-glyph-advances-for-direction"></a><h3>hb_font_get_glyph_advances_for_direction ()</h3>
2086 <pre class="programlisting"><span class="returnvalue">void</span>
2087 hb_font_get_glyph_advances_for_direction
2088                                (<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>,
2089                                 <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>,
2090                                 <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
2091                                 <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_glyph</code></em>,
2092                                 <em class="parameter"><code><span class="type">unsigned </span> glyph_stride</code></em>,
2093                                 <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> *first_advance</code></em>,
2094                                 <em class="parameter"><code><span class="type">unsigned </span> advance_stride</code></em>);</pre>
2095 <p>Fetches the advances for a sequence of glyph IDs in the specified
2096 font, in a text segment of the specified direction.</p>
2097 <p>Calls the appropriate direction-specific variant (horizontal
2098 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
2099 .</p>
2100 <div class="refsect3">
2101 <a name="hb-font-get-glyph-advances-for-direction.parameters"></a><h4>Parameters</h4>
2102 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2103 <colgroup>
2104 <col width="150px" class="parameters_name">
2105 <col class="parameters_description">
2106 <col width="200px" class="parameters_annotations">
2107 </colgroup>
2108 <tbody>
2109 <tr>
2110 <td class="parameter_name"><p>font</p></td>
2111 <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>
2112 <td class="parameter_annotations"> </td>
2113 </tr>
2114 <tr>
2115 <td class="parameter_name"><p>direction</p></td>
2116 <td class="parameter_description"><p>The direction of the text segment</p></td>
2117 <td class="parameter_annotations"> </td>
2118 </tr>
2119 <tr>
2120 <td class="parameter_name"><p>count</p></td>
2121 <td class="parameter_description"><p>The number of glyph IDs in the sequence queried</p></td>
2122 <td class="parameter_annotations"> </td>
2123 </tr>
2124 <tr>
2125 <td class="parameter_name"><p>first_glyph</p></td>
2126 <td class="parameter_description"><p>The first glyph ID to query</p></td>
2127 <td class="parameter_annotations"> </td>
2128 </tr>
2129 <tr>
2130 <td class="parameter_name"><p>glyph_stride</p></td>
2131 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
2132 <td class="parameter_annotations"> </td>
2133 </tr>
2134 <tr>
2135 <td class="parameter_name"><p>first_advance</p></td>
2136 <td class="parameter_description"><p>The first advance retrieved. </p></td>
2137 <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>
2138 </tr>
2139 <tr>
2140 <td class="parameter_name"><p>advance_stride</p></td>
2141 <td class="parameter_description"><p>The stride between successive advances. </p></td>
2142 <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>
2143 </tr>
2144 </tbody>
2145 </table></div>
2146 </div>
2147 <p class="since">Since: <a class="link" href="api-index-1-8-6.html#api-index-1.8.6">1.8.6</a></p>
2148 </div>
2149 <hr>
2150 <div class="refsect2">
2151 <a name="hb-font-get-glyph-advances-func-t"></a><h3>hb_font_get_glyph_advances_func_t ()</h3>
2152 <pre class="programlisting"><span class="returnvalue">void</span>
2153 <span class="c_punctuation">(</span>*hb_font_get_glyph_advances_func_t<span class="c_punctuation">)</span> (<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>,
2154                                       <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2155                                       <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
2156                                       <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_glyph</code></em>,
2157                                       <em class="parameter"><code><span class="type">unsigned </span> glyph_stride</code></em>,
2158                                       <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> *first_advance</code></em>,
2159                                       <em class="parameter"><code><span class="type">unsigned </span> advance_stride</code></em>,
2160                                       <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2161 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
2162 <p>This method should retrieve the advances for a sequence of glyphs.</p>
2163 <div class="refsect3">
2164 <a name="hb-font-get-glyph-advances-func-t.parameters"></a><h4>Parameters</h4>
2165 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2166 <colgroup>
2167 <col width="150px" class="parameters_name">
2168 <col class="parameters_description">
2169 <col width="200px" class="parameters_annotations">
2170 </colgroup>
2171 <tbody>
2172 <tr>
2173 <td class="parameter_name"><p>font</p></td>
2174 <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>
2175 <td class="parameter_annotations"> </td>
2176 </tr>
2177 <tr>
2178 <td class="parameter_name"><p>font_data</p></td>
2179 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2180 user data pointer</p></td>
2181 <td class="parameter_annotations"> </td>
2182 </tr>
2183 <tr>
2184 <td class="parameter_name"><p>count</p></td>
2185 <td class="parameter_description"><p>The number of glyph IDs in the sequence queried</p></td>
2186 <td class="parameter_annotations"> </td>
2187 </tr>
2188 <tr>
2189 <td class="parameter_name"><p>first_glyph</p></td>
2190 <td class="parameter_description"><p>The first glyph ID to query</p></td>
2191 <td class="parameter_annotations"> </td>
2192 </tr>
2193 <tr>
2194 <td class="parameter_name"><p>glyph_stride</p></td>
2195 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
2196 <td class="parameter_annotations"> </td>
2197 </tr>
2198 <tr>
2199 <td class="parameter_name"><p>first_advance</p></td>
2200 <td class="parameter_description"><p>The first advance retrieved. </p></td>
2201 <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>
2202 </tr>
2203 <tr>
2204 <td class="parameter_name"><p>advance_stride</p></td>
2205 <td class="parameter_description"><p>The stride between successive advances</p></td>
2206 <td class="parameter_annotations"> </td>
2207 </tr>
2208 <tr>
2209 <td class="parameter_name"><p>user_data</p></td>
2210 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2211 <td class="parameter_annotations"> </td>
2212 </tr>
2213 </tbody>
2214 </table></div>
2215 </div>
2216 </div>
2217 <hr>
2218 <div class="refsect2">
2219 <a name="hb-font-get-glyph-contour-point"></a><h3>hb_font_get_glyph_contour_point ()</h3>
2220 <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>
2221 hb_font_get_glyph_contour_point (<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>,
2222                                  <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>,
2223                                  <em class="parameter"><code>unsigned <span class="type">int</span> point_index</code></em>,
2224                                  <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> *x</code></em>,
2225                                  <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> *y</code></em>);</pre>
2226 <p>Fetches the (x,y) coordinates of a specified contour-point index
2227 in the specified glyph, within the specified font.</p>
2228 <div class="refsect3">
2229 <a name="hb-font-get-glyph-contour-point.parameters"></a><h4>Parameters</h4>
2230 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2231 <colgroup>
2232 <col width="150px" class="parameters_name">
2233 <col class="parameters_description">
2234 <col width="200px" class="parameters_annotations">
2235 </colgroup>
2236 <tbody>
2237 <tr>
2238 <td class="parameter_name"><p>font</p></td>
2239 <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>
2240 <td class="parameter_annotations"> </td>
2241 </tr>
2242 <tr>
2243 <td class="parameter_name"><p>glyph</p></td>
2244 <td class="parameter_description"><p>The glyph ID to query</p></td>
2245 <td class="parameter_annotations"> </td>
2246 </tr>
2247 <tr>
2248 <td class="parameter_name"><p>point_index</p></td>
2249 <td class="parameter_description"><p>The contour-point index to query</p></td>
2250 <td class="parameter_annotations"> </td>
2251 </tr>
2252 <tr>
2253 <td class="parameter_name"><p>x</p></td>
2254 <td class="parameter_description"><p>The X value retrieved for the contour point. </p></td>
2255 <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>
2256 </tr>
2257 <tr>
2258 <td class="parameter_name"><p>y</p></td>
2259 <td class="parameter_description"><p>The Y value retrieved for the contour point. </p></td>
2260 <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>
2261 </tr>
2262 </tbody>
2263 </table></div>
2264 </div>
2265 <div class="refsect3">
2266 <a name="hb-font-get-glyph-contour-point.returns"></a><h4>Returns</h4>
2267 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2268 </div>
2269 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2270 </div>
2271 <hr>
2272 <div class="refsect2">
2273 <a name="hb-font-get-glyph-contour-point-for-origin"></a><h3>hb_font_get_glyph_contour_point_for_origin ()</h3>
2274 <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>
2275 hb_font_get_glyph_contour_point_for_origin
2276                                (<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>,
2277                                 <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>,
2278                                 <em class="parameter"><code>unsigned <span class="type">int</span> point_index</code></em>,
2279                                 <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>,
2280                                 <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> *x</code></em>,
2281                                 <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> *y</code></em>);</pre>
2282 <p>Fetches the (X,Y) coordinates of a specified contour-point index
2283 in the specified glyph ID in the specified font, with respect
2284 to the origin in a text segment in the specified direction.</p>
2285 <p>Calls the appropriate direction-specific variant (horizontal
2286 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
2287 .</p>
2288 <div class="refsect3">
2289 <a name="hb-font-get-glyph-contour-point-for-origin.parameters"></a><h4>Parameters</h4>
2290 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2291 <colgroup>
2292 <col width="150px" class="parameters_name">
2293 <col class="parameters_description">
2294 <col width="200px" class="parameters_annotations">
2295 </colgroup>
2296 <tbody>
2297 <tr>
2298 <td class="parameter_name"><p>font</p></td>
2299 <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>
2300 <td class="parameter_annotations"> </td>
2301 </tr>
2302 <tr>
2303 <td class="parameter_name"><p>glyph</p></td>
2304 <td class="parameter_description"><p>The glyph ID to query</p></td>
2305 <td class="parameter_annotations"> </td>
2306 </tr>
2307 <tr>
2308 <td class="parameter_name"><p>point_index</p></td>
2309 <td class="parameter_description"><p>The contour-point index to query</p></td>
2310 <td class="parameter_annotations"> </td>
2311 </tr>
2312 <tr>
2313 <td class="parameter_name"><p>direction</p></td>
2314 <td class="parameter_description"><p>The direction of the text segment</p></td>
2315 <td class="parameter_annotations"> </td>
2316 </tr>
2317 <tr>
2318 <td class="parameter_name"><p>x</p></td>
2319 <td class="parameter_description"><p>The X value retrieved for the contour point. </p></td>
2320 <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>
2321 </tr>
2322 <tr>
2323 <td class="parameter_name"><p>y</p></td>
2324 <td class="parameter_description"><p>The Y value retrieved for the contour point. </p></td>
2325 <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>
2326 </tr>
2327 </tbody>
2328 </table></div>
2329 </div>
2330 <div class="refsect3">
2331 <a name="hb-font-get-glyph-contour-point-for-origin.returns"></a><h4>Returns</h4>
2332 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2333 </div>
2334 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2335 </div>
2336 <hr>
2337 <div class="refsect2">
2338 <a name="hb-font-get-glyph-contour-point-func-t"></a><h3>hb_font_get_glyph_contour_point_func_t ()</h3>
2339 <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>
2340 <span class="c_punctuation">(</span>*hb_font_get_glyph_contour_point_func_t<span class="c_punctuation">)</span>
2341                                (<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>,
2342                                 <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2343                                 <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>,
2344                                 <em class="parameter"><code>unsigned <span class="type">int</span> point_index</code></em>,
2345                                 <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> *x</code></em>,
2346                                 <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> *y</code></em>,
2347                                 <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2348 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
2349 <p>This method should retrieve the (X,Y) coordinates (in font units) for a
2350 specified contour point in a glyph. Each coordinate must be returned as
2351 an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> output parameter.</p>
2352 <div class="refsect3">
2353 <a name="hb-font-get-glyph-contour-point-func-t.parameters"></a><h4>Parameters</h4>
2354 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2355 <colgroup>
2356 <col width="150px" class="parameters_name">
2357 <col class="parameters_description">
2358 <col width="200px" class="parameters_annotations">
2359 </colgroup>
2360 <tbody>
2361 <tr>
2362 <td class="parameter_name"><p>font</p></td>
2363 <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>
2364 <td class="parameter_annotations"> </td>
2365 </tr>
2366 <tr>
2367 <td class="parameter_name"><p>font_data</p></td>
2368 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2369 user data pointer</p></td>
2370 <td class="parameter_annotations"> </td>
2371 </tr>
2372 <tr>
2373 <td class="parameter_name"><p>glyph</p></td>
2374 <td class="parameter_description"><p>The glyph ID to query</p></td>
2375 <td class="parameter_annotations"> </td>
2376 </tr>
2377 <tr>
2378 <td class="parameter_name"><p>point_index</p></td>
2379 <td class="parameter_description"><p>The contour-point index to query</p></td>
2380 <td class="parameter_annotations"> </td>
2381 </tr>
2382 <tr>
2383 <td class="parameter_name"><p>x</p></td>
2384 <td class="parameter_description"><p>The X value retrieved for the contour point. </p></td>
2385 <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>
2386 </tr>
2387 <tr>
2388 <td class="parameter_name"><p>y</p></td>
2389 <td class="parameter_description"><p>The Y value retrieved for the contour point. </p></td>
2390 <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>
2391 </tr>
2392 <tr>
2393 <td class="parameter_name"><p>user_data</p></td>
2394 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2395 <td class="parameter_annotations"> </td>
2396 </tr>
2397 </tbody>
2398 </table></div>
2399 </div>
2400 <div class="refsect3">
2401 <a name="hb-font-get-glyph-contour-point-func-t.returns"></a><h4>Returns</h4>
2402 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2403 </div>
2404 </div>
2405 <hr>
2406 <div class="refsect2">
2407 <a name="hb-font-get-glyph-extents"></a><h3>hb_font_get_glyph_extents ()</h3>
2408 <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>
2409 hb_font_get_glyph_extents (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
2410                            <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>,
2411                            <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> *extents</code></em>);</pre>
2412 <p>Fetches the <a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> data for a glyph ID
2413 in the specified font.</p>
2414 <div class="refsect3">
2415 <a name="hb-font-get-glyph-extents.parameters"></a><h4>Parameters</h4>
2416 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2417 <colgroup>
2418 <col width="150px" class="parameters_name">
2419 <col class="parameters_description">
2420 <col width="200px" class="parameters_annotations">
2421 </colgroup>
2422 <tbody>
2423 <tr>
2424 <td class="parameter_name"><p>font</p></td>
2425 <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>
2426 <td class="parameter_annotations"> </td>
2427 </tr>
2428 <tr>
2429 <td class="parameter_name"><p>glyph</p></td>
2430 <td class="parameter_description"><p>The glyph ID to query</p></td>
2431 <td class="parameter_annotations"> </td>
2432 </tr>
2433 <tr>
2434 <td class="parameter_name"><p>extents</p></td>
2435 <td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> retrieved. </p></td>
2436 <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>
2437 </tr>
2438 </tbody>
2439 </table></div>
2440 </div>
2441 <div class="refsect3">
2442 <a name="hb-font-get-glyph-extents.returns"></a><h4>Returns</h4>
2443 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2444 </div>
2445 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2446 </div>
2447 <hr>
2448 <div class="refsect2">
2449 <a name="hb-font-get-glyph-extents-for-origin"></a><h3>hb_font_get_glyph_extents_for_origin ()</h3>
2450 <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>
2451 hb_font_get_glyph_extents_for_origin (<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>,
2452                                       <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>,
2453                                       <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>,
2454                                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> *extents</code></em>);</pre>
2455 <p>Fetches the <a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> data for a glyph ID
2456 in the specified font, with respect to the origin in
2457 a text segment in the specified direction.</p>
2458 <p>Calls the appropriate direction-specific variant (horizontal
2459 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
2460 .</p>
2461 <div class="refsect3">
2462 <a name="hb-font-get-glyph-extents-for-origin.parameters"></a><h4>Parameters</h4>
2463 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2464 <colgroup>
2465 <col width="150px" class="parameters_name">
2466 <col class="parameters_description">
2467 <col width="200px" class="parameters_annotations">
2468 </colgroup>
2469 <tbody>
2470 <tr>
2471 <td class="parameter_name"><p>font</p></td>
2472 <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>
2473 <td class="parameter_annotations"> </td>
2474 </tr>
2475 <tr>
2476 <td class="parameter_name"><p>glyph</p></td>
2477 <td class="parameter_description"><p>The glyph ID to query</p></td>
2478 <td class="parameter_annotations"> </td>
2479 </tr>
2480 <tr>
2481 <td class="parameter_name"><p>direction</p></td>
2482 <td class="parameter_description"><p>The direction of the text segment</p></td>
2483 <td class="parameter_annotations"> </td>
2484 </tr>
2485 <tr>
2486 <td class="parameter_name"><p>extents</p></td>
2487 <td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> retrieved. </p></td>
2488 <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>
2489 </tr>
2490 </tbody>
2491 </table></div>
2492 </div>
2493 <div class="refsect3">
2494 <a name="hb-font-get-glyph-extents-for-origin.returns"></a><h4>Returns</h4>
2495 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2496 </div>
2497 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2498 </div>
2499 <hr>
2500 <div class="refsect2">
2501 <a name="hb-font-get-glyph-extents-func-t"></a><h3>hb_font_get_glyph_extents_func_t ()</h3>
2502 <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>
2503 <span class="c_punctuation">(</span>*hb_font_get_glyph_extents_func_t<span class="c_punctuation">)</span> (<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>,
2504                                      <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2505                                      <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>,
2506                                      <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> *extents</code></em>,
2507                                      <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2508 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
2509 <p>This method should retrieve the extents for a specified glyph. Extents must be
2510 returned in an <span class="type">hb_glyph_extents</span> output parameter.</p>
2511 <div class="refsect3">
2512 <a name="hb-font-get-glyph-extents-func-t.parameters"></a><h4>Parameters</h4>
2513 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2514 <colgroup>
2515 <col width="150px" class="parameters_name">
2516 <col class="parameters_description">
2517 <col width="200px" class="parameters_annotations">
2518 </colgroup>
2519 <tbody>
2520 <tr>
2521 <td class="parameter_name"><p>font</p></td>
2522 <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>
2523 <td class="parameter_annotations"> </td>
2524 </tr>
2525 <tr>
2526 <td class="parameter_name"><p>font_data</p></td>
2527 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2528 user data pointer</p></td>
2529 <td class="parameter_annotations"> </td>
2530 </tr>
2531 <tr>
2532 <td class="parameter_name"><p>glyph</p></td>
2533 <td class="parameter_description"><p>The glyph ID to query</p></td>
2534 <td class="parameter_annotations"> </td>
2535 </tr>
2536 <tr>
2537 <td class="parameter_name"><p>extents</p></td>
2538 <td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-font.html#hb-glyph-extents-t" title="hb_glyph_extents_t"><span class="type">hb_glyph_extents_t</span></a> retrieved. </p></td>
2539 <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>
2540 </tr>
2541 <tr>
2542 <td class="parameter_name"><p>user_data</p></td>
2543 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2544 <td class="parameter_annotations"> </td>
2545 </tr>
2546 </tbody>
2547 </table></div>
2548 </div>
2549 <div class="refsect3">
2550 <a name="hb-font-get-glyph-extents-func-t.returns"></a><h4>Returns</h4>
2551 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2552 </div>
2553 </div>
2554 <hr>
2555 <div class="refsect2">
2556 <a name="hb-font-get-glyph-from-name"></a><h3>hb_font_get_glyph_from_name ()</h3>
2557 <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>
2558 hb_font_get_glyph_from_name (<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>,
2559                              <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
2560                              <em class="parameter"><code><span class="type">int</span> len</code></em>,
2561                              <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>
2562 <p>Fetches the glyph ID that corresponds to a name string in the specified <em class="parameter"><code>font</code></em>
2563 .</p>
2564 <div class="note">Note: <em class="parameter"><code>len</code></em> == -1 means the name string is null-terminated.</div>
2565 <div class="refsect3">
2566 <a name="hb-font-get-glyph-from-name.parameters"></a><h4>Parameters</h4>
2567 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2568 <colgroup>
2569 <col width="150px" class="parameters_name">
2570 <col class="parameters_description">
2571 <col width="200px" class="parameters_annotations">
2572 </colgroup>
2573 <tbody>
2574 <tr>
2575 <td class="parameter_name"><p>font</p></td>
2576 <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>
2577 <td class="parameter_annotations"> </td>
2578 </tr>
2579 <tr>
2580 <td class="parameter_name"><p>name</p></td>
2581 <td class="parameter_description"><p>The name string to query. </p></td>
2582 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
2583 </tr>
2584 <tr>
2585 <td class="parameter_name"><p>len</p></td>
2586 <td class="parameter_description"><p>The length of the name queried</p></td>
2587 <td class="parameter_annotations"> </td>
2588 </tr>
2589 <tr>
2590 <td class="parameter_name"><p>glyph</p></td>
2591 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
2592 <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>
2593 </tr>
2594 </tbody>
2595 </table></div>
2596 </div>
2597 <div class="refsect3">
2598 <a name="hb-font-get-glyph-from-name.returns"></a><h4>Returns</h4>
2599 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2600 </div>
2601 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2602 </div>
2603 <hr>
2604 <div class="refsect2">
2605 <a name="hb-font-get-glyph-from-name-func-t"></a><h3>hb_font_get_glyph_from_name_func_t ()</h3>
2606 <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>
2607 <span class="c_punctuation">(</span>*hb_font_get_glyph_from_name_func_t<span class="c_punctuation">)</span> (<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>,
2608                                        <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2609                                        <em class="parameter"><code>const <span class="type">char</span> *name</code></em>,
2610                                        <em class="parameter"><code><span class="type">int</span> len</code></em>,
2611                                        <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>,
2612                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2613 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
2614 <p>This method should retrieve the glyph ID that corresponds to a glyph-name
2615 string.</p>
2616 <div class="refsect3">
2617 <a name="hb-font-get-glyph-from-name-func-t.parameters"></a><h4>Parameters</h4>
2618 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2619 <colgroup>
2620 <col width="150px" class="parameters_name">
2621 <col class="parameters_description">
2622 <col width="200px" class="parameters_annotations">
2623 </colgroup>
2624 <tbody>
2625 <tr>
2626 <td class="parameter_name"><p>font</p></td>
2627 <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>
2628 <td class="parameter_annotations"> </td>
2629 </tr>
2630 <tr>
2631 <td class="parameter_name"><p>font_data</p></td>
2632 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2633 user data pointer</p></td>
2634 <td class="parameter_annotations"> </td>
2635 </tr>
2636 <tr>
2637 <td class="parameter_name"><p>name</p></td>
2638 <td class="parameter_description"><p>The name string to query. </p></td>
2639 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len]</span></td>
2640 </tr>
2641 <tr>
2642 <td class="parameter_name"><p>len</p></td>
2643 <td class="parameter_description"><p>The length of the name queried</p></td>
2644 <td class="parameter_annotations"> </td>
2645 </tr>
2646 <tr>
2647 <td class="parameter_name"><p>glyph</p></td>
2648 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
2649 <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>
2650 </tr>
2651 <tr>
2652 <td class="parameter_name"><p>user_data</p></td>
2653 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2654 <td class="parameter_annotations"> </td>
2655 </tr>
2656 </tbody>
2657 </table></div>
2658 </div>
2659 <div class="refsect3">
2660 <a name="hb-font-get-glyph-from-name-func-t.returns"></a><h4>Returns</h4>
2661 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2662 </div>
2663 </div>
2664 <hr>
2665 <div class="refsect2">
2666 <a name="hb-font-get-glyph-h-advance"></a><h3>hb_font_get_glyph_h_advance ()</h3>
2667 <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>
2668 hb_font_get_glyph_h_advance (<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>,
2669                              <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>
2670 <p>Fetches the advance for a glyph ID in the specified font,
2671 for horizontal text segments.</p>
2672 <div class="refsect3">
2673 <a name="hb-font-get-glyph-h-advance.parameters"></a><h4>Parameters</h4>
2674 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2675 <colgroup>
2676 <col width="150px" class="parameters_name">
2677 <col class="parameters_description">
2678 <col width="200px" class="parameters_annotations">
2679 </colgroup>
2680 <tbody>
2681 <tr>
2682 <td class="parameter_name"><p>font</p></td>
2683 <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>
2684 <td class="parameter_annotations"> </td>
2685 </tr>
2686 <tr>
2687 <td class="parameter_name"><p>glyph</p></td>
2688 <td class="parameter_description"><p>The glyph ID to query</p></td>
2689 <td class="parameter_annotations"> </td>
2690 </tr>
2691 </tbody>
2692 </table></div>
2693 </div>
2694 <div class="refsect3">
2695 <a name="hb-font-get-glyph-h-advance.returns"></a><h4>Returns</h4>
2696 <p> The advance of <em class="parameter"><code>glyph</code></em>
2697 within <em class="parameter"><code>font</code></em>
2698 </p>
2699 </div>
2700 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2701 </div>
2702 <hr>
2703 <div class="refsect2">
2704 <a name="hb-font-get-glyph-h-advances"></a><h3>hb_font_get_glyph_h_advances ()</h3>
2705 <pre class="programlisting"><span class="returnvalue">void</span>
2706 hb_font_get_glyph_h_advances (<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>,
2707                               <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
2708                               <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_glyph</code></em>,
2709                               <em class="parameter"><code><span class="type">unsigned </span> glyph_stride</code></em>,
2710                               <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> *first_advance</code></em>,
2711                               <em class="parameter"><code><span class="type">unsigned </span> advance_stride</code></em>);</pre>
2712 <p>Fetches the advances for a sequence of glyph IDs in the specified
2713 font, for horizontal text segments.</p>
2714 <div class="refsect3">
2715 <a name="hb-font-get-glyph-h-advances.parameters"></a><h4>Parameters</h4>
2716 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2717 <colgroup>
2718 <col width="150px" class="parameters_name">
2719 <col class="parameters_description">
2720 <col width="200px" class="parameters_annotations">
2721 </colgroup>
2722 <tbody>
2723 <tr>
2724 <td class="parameter_name"><p>font</p></td>
2725 <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>
2726 <td class="parameter_annotations"> </td>
2727 </tr>
2728 <tr>
2729 <td class="parameter_name"><p>count</p></td>
2730 <td class="parameter_description"><p>The number of glyph IDs in the sequence queried</p></td>
2731 <td class="parameter_annotations"> </td>
2732 </tr>
2733 <tr>
2734 <td class="parameter_name"><p>first_glyph</p></td>
2735 <td class="parameter_description"><p>The first glyph ID to query</p></td>
2736 <td class="parameter_annotations"> </td>
2737 </tr>
2738 <tr>
2739 <td class="parameter_name"><p>glyph_stride</p></td>
2740 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
2741 <td class="parameter_annotations"> </td>
2742 </tr>
2743 <tr>
2744 <td class="parameter_name"><p>first_advance</p></td>
2745 <td class="parameter_description"><p>The first advance retrieved. </p></td>
2746 <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>
2747 </tr>
2748 <tr>
2749 <td class="parameter_name"><p>advance_stride</p></td>
2750 <td class="parameter_description"><p>The stride between successive advances</p></td>
2751 <td class="parameter_annotations"> </td>
2752 </tr>
2753 </tbody>
2754 </table></div>
2755 </div>
2756 <p class="since">Since: <a class="link" href="api-index-1-8-6.html#api-index-1.8.6">1.8.6</a></p>
2757 </div>
2758 <hr>
2759 <div class="refsect2">
2760 <a name="hb-font-get-glyph-h-kerning"></a><h3>hb_font_get_glyph_h_kerning ()</h3>
2761 <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>
2762 hb_font_get_glyph_h_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>,
2763                              <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> left_glyph</code></em>,
2764                              <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> right_glyph</code></em>);</pre>
2765 <p>Fetches the kerning-adjustment value for a glyph-pair in
2766 the specified font, for horizontal text segments.</p>
2767 <div class="note">It handles legacy kerning only (as returned by the corresponding
2768 <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> function).</div>
2769 <div class="refsect3">
2770 <a name="hb-font-get-glyph-h-kerning.parameters"></a><h4>Parameters</h4>
2771 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2772 <colgroup>
2773 <col width="150px" class="parameters_name">
2774 <col class="parameters_description">
2775 <col width="200px" class="parameters_annotations">
2776 </colgroup>
2777 <tbody>
2778 <tr>
2779 <td class="parameter_name"><p>font</p></td>
2780 <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>
2781 <td class="parameter_annotations"> </td>
2782 </tr>
2783 <tr>
2784 <td class="parameter_name"><p>left_glyph</p></td>
2785 <td class="parameter_description"><p>The glyph ID of the left glyph in the glyph pair</p></td>
2786 <td class="parameter_annotations"> </td>
2787 </tr>
2788 <tr>
2789 <td class="parameter_name"><p>right_glyph</p></td>
2790 <td class="parameter_description"><p>The glyph ID of the right glyph in the glyph pair</p></td>
2791 <td class="parameter_annotations"> </td>
2792 </tr>
2793 </tbody>
2794 </table></div>
2795 </div>
2796 <div class="refsect3">
2797 <a name="hb-font-get-glyph-h-kerning.returns"></a><h4>Returns</h4>
2798 <p> The kerning adjustment value</p>
2799 </div>
2800 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2801 </div>
2802 <hr>
2803 <div class="refsect2">
2804 <a name="hb-font-get-glyph-h-origin"></a><h3>hb_font_get_glyph_h_origin ()</h3>
2805 <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>
2806 hb_font_get_glyph_h_origin (<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>,
2807                             <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>,
2808                             <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> *x</code></em>,
2809                             <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> *y</code></em>);</pre>
2810 <p>Fetches the (X,Y) coordinates of the origin for a glyph ID
2811 in the specified font, for horizontal text segments.</p>
2812 <div class="refsect3">
2813 <a name="hb-font-get-glyph-h-origin.parameters"></a><h4>Parameters</h4>
2814 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2815 <colgroup>
2816 <col width="150px" class="parameters_name">
2817 <col class="parameters_description">
2818 <col width="200px" class="parameters_annotations">
2819 </colgroup>
2820 <tbody>
2821 <tr>
2822 <td class="parameter_name"><p>font</p></td>
2823 <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>
2824 <td class="parameter_annotations"> </td>
2825 </tr>
2826 <tr>
2827 <td class="parameter_name"><p>glyph</p></td>
2828 <td class="parameter_description"><p>The glyph ID to query</p></td>
2829 <td class="parameter_annotations"> </td>
2830 </tr>
2831 <tr>
2832 <td class="parameter_name"><p>x</p></td>
2833 <td class="parameter_description"><p>The X coordinate of the origin. </p></td>
2834 <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>
2835 </tr>
2836 <tr>
2837 <td class="parameter_name"><p>y</p></td>
2838 <td class="parameter_description"><p>The Y coordinate of the origin. </p></td>
2839 <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>
2840 </tr>
2841 </tbody>
2842 </table></div>
2843 </div>
2844 <div class="refsect3">
2845 <a name="hb-font-get-glyph-h-origin.returns"></a><h4>Returns</h4>
2846 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
2847 </div>
2848 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2849 </div>
2850 <hr>
2851 <div class="refsect2">
2852 <a name="hb-font-get-glyph-kerning-for-direction"></a><h3>hb_font_get_glyph_kerning_for_direction ()</h3>
2853 <pre class="programlisting"><span class="returnvalue">void</span>
2854 hb_font_get_glyph_kerning_for_direction
2855                                (<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>,
2856                                 <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> first_glyph</code></em>,
2857                                 <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> second_glyph</code></em>,
2858                                 <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>,
2859                                 <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> *x</code></em>,
2860                                 <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> *y</code></em>);</pre>
2861 <p>Fetches the kerning-adjustment value for a glyph-pair in the specified font.</p>
2862 <p>Calls the appropriate direction-specific variant (horizontal
2863 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
2864 .</p>
2865 <div class="refsect3">
2866 <a name="hb-font-get-glyph-kerning-for-direction.parameters"></a><h4>Parameters</h4>
2867 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2868 <colgroup>
2869 <col width="150px" class="parameters_name">
2870 <col class="parameters_description">
2871 <col width="200px" class="parameters_annotations">
2872 </colgroup>
2873 <tbody>
2874 <tr>
2875 <td class="parameter_name"><p>font</p></td>
2876 <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>
2877 <td class="parameter_annotations"> </td>
2878 </tr>
2879 <tr>
2880 <td class="parameter_name"><p>first_glyph</p></td>
2881 <td class="parameter_description"><p>The glyph ID of the first glyph in the glyph pair to query</p></td>
2882 <td class="parameter_annotations"> </td>
2883 </tr>
2884 <tr>
2885 <td class="parameter_name"><p>second_glyph</p></td>
2886 <td class="parameter_description"><p>The glyph ID of the second glyph in the glyph pair to query</p></td>
2887 <td class="parameter_annotations"> </td>
2888 </tr>
2889 <tr>
2890 <td class="parameter_name"><p>direction</p></td>
2891 <td class="parameter_description"><p>The direction of the text segment</p></td>
2892 <td class="parameter_annotations"> </td>
2893 </tr>
2894 <tr>
2895 <td class="parameter_name"><p>x</p></td>
2896 <td class="parameter_description"><p>The horizontal kerning-adjustment value retrieved. </p></td>
2897 <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>
2898 </tr>
2899 <tr>
2900 <td class="parameter_name"><p>y</p></td>
2901 <td class="parameter_description"><p>The vertical kerning-adjustment value retrieved. </p></td>
2902 <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>
2903 </tr>
2904 </tbody>
2905 </table></div>
2906 </div>
2907 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
2908 </div>
2909 <hr>
2910 <div class="refsect2">
2911 <a name="hb-font-get-glyph-kerning-func-t"></a><h3>hb_font_get_glyph_kerning_func_t ()</h3>
2912 <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>
2913 <span class="c_punctuation">(</span>*hb_font_get_glyph_kerning_func_t<span class="c_punctuation">)</span> (<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>,
2914                                      <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
2915                                      <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> first_glyph</code></em>,
2916                                      <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> second_glyph</code></em>,
2917                                      <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2918 <p>This method should retrieve the kerning-adjustment value for a glyph-pair in
2919 the specified font, for horizontal text segments.</p>
2920 <div class="refsect3">
2921 <a name="hb-font-get-glyph-kerning-func-t.parameters"></a><h4>Parameters</h4>
2922 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2923 <colgroup>
2924 <col width="150px" class="parameters_name">
2925 <col class="parameters_description">
2926 <col width="200px" class="parameters_annotations">
2927 </colgroup>
2928 <tbody>
2929 <tr>
2930 <td class="parameter_name"><p>font</p></td>
2931 <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>
2932 <td class="parameter_annotations"> </td>
2933 </tr>
2934 <tr>
2935 <td class="parameter_name"><p>font_data</p></td>
2936 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
2937 user data pointer</p></td>
2938 <td class="parameter_annotations"> </td>
2939 </tr>
2940 <tr>
2941 <td class="parameter_name"><p>first_glyph</p></td>
2942 <td class="parameter_description"><p>The glyph ID of the first glyph in the glyph pair</p></td>
2943 <td class="parameter_annotations"> </td>
2944 </tr>
2945 <tr>
2946 <td class="parameter_name"><p>second_glyph</p></td>
2947 <td class="parameter_description"><p>The glyph ID of the second glyph in the glyph pair</p></td>
2948 <td class="parameter_annotations"> </td>
2949 </tr>
2950 <tr>
2951 <td class="parameter_name"><p>user_data</p></td>
2952 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
2953 <td class="parameter_annotations"> </td>
2954 </tr>
2955 </tbody>
2956 </table></div>
2957 </div>
2958 </div>
2959 <hr>
2960 <div class="refsect2">
2961 <a name="hb-font-get-glyph-name"></a><h3>hb_font_get_glyph_name ()</h3>
2962 <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>
2963 hb_font_get_glyph_name (<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>,
2964                         <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>,
2965                         <em class="parameter"><code><span class="type">char</span> *name</code></em>,
2966                         <em class="parameter"><code>unsigned <span class="type">int</span> size</code></em>);</pre>
2967 <p>Fetches the glyph-name string for a glyph ID in the specified <em class="parameter"><code>font</code></em>
2968 .</p>
2969 <div class="refsect3">
2970 <a name="hb-font-get-glyph-name.parameters"></a><h4>Parameters</h4>
2971 <div class="informaltable"><table class="informaltable" width="100%" border="0">
2972 <colgroup>
2973 <col width="150px" class="parameters_name">
2974 <col class="parameters_description">
2975 <col width="200px" class="parameters_annotations">
2976 </colgroup>
2977 <tbody>
2978 <tr>
2979 <td class="parameter_name"><p>font</p></td>
2980 <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>
2981 <td class="parameter_annotations"> </td>
2982 </tr>
2983 <tr>
2984 <td class="parameter_name"><p>glyph</p></td>
2985 <td class="parameter_description"><p>The glyph ID to query</p></td>
2986 <td class="parameter_annotations"> </td>
2987 </tr>
2988 <tr>
2989 <td class="parameter_name"><p>name</p></td>
2990 <td class="parameter_description"><p>Name string retrieved for the glyph ID. </p></td>
2991 <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=size]</span></td>
2992 </tr>
2993 <tr>
2994 <td class="parameter_name"><p>size</p></td>
2995 <td class="parameter_description"><p>Length of the glyph-name string retrieved</p></td>
2996 <td class="parameter_annotations"> </td>
2997 </tr>
2998 </tbody>
2999 </table></div>
3000 </div>
3001 <div class="refsect3">
3002 <a name="hb-font-get-glyph-name.returns"></a><h4>Returns</h4>
3003 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3004 </div>
3005 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3006 </div>
3007 <hr>
3008 <div class="refsect2">
3009 <a name="hb-font-get-glyph-name-func-t"></a><h3>hb_font_get_glyph_name_func_t ()</h3>
3010 <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>
3011 <span class="c_punctuation">(</span>*hb_font_get_glyph_name_func_t<span class="c_punctuation">)</span> (<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>,
3012                                   <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
3013                                   <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>,
3014                                   <em class="parameter"><code><span class="type">char</span> *name</code></em>,
3015                                   <em class="parameter"><code>unsigned <span class="type">int</span> size</code></em>,
3016                                   <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
3017 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
3018 <p>This method should retrieve the glyph name that corresponds to a
3019 glyph ID. The name should be returned in a string output parameter.</p>
3020 <div class="refsect3">
3021 <a name="hb-font-get-glyph-name-func-t.parameters"></a><h4>Parameters</h4>
3022 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3023 <colgroup>
3024 <col width="150px" class="parameters_name">
3025 <col class="parameters_description">
3026 <col width="200px" class="parameters_annotations">
3027 </colgroup>
3028 <tbody>
3029 <tr>
3030 <td class="parameter_name"><p>font</p></td>
3031 <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>
3032 <td class="parameter_annotations"> </td>
3033 </tr>
3034 <tr>
3035 <td class="parameter_name"><p>font_data</p></td>
3036 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
3037 user data pointer</p></td>
3038 <td class="parameter_annotations"> </td>
3039 </tr>
3040 <tr>
3041 <td class="parameter_name"><p>glyph</p></td>
3042 <td class="parameter_description"><p>The glyph ID to query</p></td>
3043 <td class="parameter_annotations"> </td>
3044 </tr>
3045 <tr>
3046 <td class="parameter_name"><p>name</p></td>
3047 <td class="parameter_description"><p>Name string retrieved for the glyph ID. </p></td>
3048 <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=size]</span></td>
3049 </tr>
3050 <tr>
3051 <td class="parameter_name"><p>size</p></td>
3052 <td class="parameter_description"><p>Length of the glyph-name string retrieved</p></td>
3053 <td class="parameter_annotations"> </td>
3054 </tr>
3055 <tr>
3056 <td class="parameter_name"><p>user_data</p></td>
3057 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
3058 <td class="parameter_annotations"> </td>
3059 </tr>
3060 </tbody>
3061 </table></div>
3062 </div>
3063 <div class="refsect3">
3064 <a name="hb-font-get-glyph-name-func-t.returns"></a><h4>Returns</h4>
3065 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3066 </div>
3067 </div>
3068 <hr>
3069 <div class="refsect2">
3070 <a name="hb-font-get-glyph-origin-for-direction"></a><h3>hb_font_get_glyph_origin_for_direction ()</h3>
3071 <pre class="programlisting"><span class="returnvalue">void</span>
3072 hb_font_get_glyph_origin_for_direction
3073                                (<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>,
3074                                 <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>,
3075                                 <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>,
3076                                 <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> *x</code></em>,
3077                                 <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> *y</code></em>);</pre>
3078 <p>Fetches the (X,Y) coordinates of the origin for a glyph in
3079 the specified font.</p>
3080 <p>Calls the appropriate direction-specific variant (horizontal
3081 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
3082 .</p>
3083 <div class="refsect3">
3084 <a name="hb-font-get-glyph-origin-for-direction.parameters"></a><h4>Parameters</h4>
3085 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3086 <colgroup>
3087 <col width="150px" class="parameters_name">
3088 <col class="parameters_description">
3089 <col width="200px" class="parameters_annotations">
3090 </colgroup>
3091 <tbody>
3092 <tr>
3093 <td class="parameter_name"><p>font</p></td>
3094 <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>
3095 <td class="parameter_annotations"> </td>
3096 </tr>
3097 <tr>
3098 <td class="parameter_name"><p>glyph</p></td>
3099 <td class="parameter_description"><p>The glyph ID to query</p></td>
3100 <td class="parameter_annotations"> </td>
3101 </tr>
3102 <tr>
3103 <td class="parameter_name"><p>direction</p></td>
3104 <td class="parameter_description"><p>The direction of the text segment</p></td>
3105 <td class="parameter_annotations"> </td>
3106 </tr>
3107 <tr>
3108 <td class="parameter_name"><p>x</p></td>
3109 <td class="parameter_description"><p>The X coordinate retrieved for the origin. </p></td>
3110 <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>
3111 </tr>
3112 <tr>
3113 <td class="parameter_name"><p>y</p></td>
3114 <td class="parameter_description"><p>The Y coordinate retrieved for the origin. </p></td>
3115 <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>
3116 </tr>
3117 </tbody>
3118 </table></div>
3119 </div>
3120 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3121 </div>
3122 <hr>
3123 <div class="refsect2">
3124 <a name="hb-font-get-glyph-origin-func-t"></a><h3>hb_font_get_glyph_origin_func_t ()</h3>
3125 <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>
3126 <span class="c_punctuation">(</span>*hb_font_get_glyph_origin_func_t<span class="c_punctuation">)</span> (<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>,
3127                                     <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
3128                                     <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>,
3129                                     <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> *x</code></em>,
3130                                     <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> *y</code></em>,
3131                                     <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
3132 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
3133 <p>This method should retrieve the (X,Y) coordinates (in font units) of the
3134 origin for a glyph. Each coordinate must be returned in an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a>
3135 output parameter.</p>
3136 <div class="refsect3">
3137 <a name="hb-font-get-glyph-origin-func-t.parameters"></a><h4>Parameters</h4>
3138 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3139 <colgroup>
3140 <col width="150px" class="parameters_name">
3141 <col class="parameters_description">
3142 <col width="200px" class="parameters_annotations">
3143 </colgroup>
3144 <tbody>
3145 <tr>
3146 <td class="parameter_name"><p>font</p></td>
3147 <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>
3148 <td class="parameter_annotations"> </td>
3149 </tr>
3150 <tr>
3151 <td class="parameter_name"><p>font_data</p></td>
3152 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
3153 user data pointer</p></td>
3154 <td class="parameter_annotations"> </td>
3155 </tr>
3156 <tr>
3157 <td class="parameter_name"><p>glyph</p></td>
3158 <td class="parameter_description"><p>The glyph ID to query</p></td>
3159 <td class="parameter_annotations"> </td>
3160 </tr>
3161 <tr>
3162 <td class="parameter_name"><p>x</p></td>
3163 <td class="parameter_description"><p>The X coordinate of the origin. </p></td>
3164 <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>
3165 </tr>
3166 <tr>
3167 <td class="parameter_name"><p>y</p></td>
3168 <td class="parameter_description"><p>The Y coordinate of the origin. </p></td>
3169 <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>
3170 </tr>
3171 <tr>
3172 <td class="parameter_name"><p>user_data</p></td>
3173 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
3174 <td class="parameter_annotations"> </td>
3175 </tr>
3176 </tbody>
3177 </table></div>
3178 </div>
3179 <div class="refsect3">
3180 <a name="hb-font-get-glyph-origin-func-t.returns"></a><h4>Returns</h4>
3181 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3182 </div>
3183 </div>
3184 <hr>
3185 <div class="refsect2">
3186 <a name="hb-font-get-glyph-v-advance"></a><h3>hb_font_get_glyph_v_advance ()</h3>
3187 <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>
3188 hb_font_get_glyph_v_advance (<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>,
3189                              <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>
3190 <p>Fetches the advance for a glyph ID in the specified font,
3191 for vertical text segments.</p>
3192 <div class="refsect3">
3193 <a name="hb-font-get-glyph-v-advance.parameters"></a><h4>Parameters</h4>
3194 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3195 <colgroup>
3196 <col width="150px" class="parameters_name">
3197 <col class="parameters_description">
3198 <col width="200px" class="parameters_annotations">
3199 </colgroup>
3200 <tbody>
3201 <tr>
3202 <td class="parameter_name"><p>font</p></td>
3203 <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>
3204 <td class="parameter_annotations"> </td>
3205 </tr>
3206 <tr>
3207 <td class="parameter_name"><p>glyph</p></td>
3208 <td class="parameter_description"><p>The glyph ID to query</p></td>
3209 <td class="parameter_annotations"> </td>
3210 </tr>
3211 </tbody>
3212 </table></div>
3213 </div>
3214 <div class="refsect3">
3215 <a name="hb-font-get-glyph-v-advance.returns"></a><h4>Returns</h4>
3216 <p> The advance of <em class="parameter"><code>glyph</code></em>
3217 within <em class="parameter"><code>font</code></em>
3218 </p>
3219 </div>
3220 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3221 </div>
3222 <hr>
3223 <div class="refsect2">
3224 <a name="hb-font-get-glyph-v-advances"></a><h3>hb_font_get_glyph_v_advances ()</h3>
3225 <pre class="programlisting"><span class="returnvalue">void</span>
3226 hb_font_get_glyph_v_advances (<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>,
3227                               <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
3228                               <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_glyph</code></em>,
3229                               <em class="parameter"><code><span class="type">unsigned </span> glyph_stride</code></em>,
3230                               <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> *first_advance</code></em>,
3231                               <em class="parameter"><code><span class="type">unsigned </span> advance_stride</code></em>);</pre>
3232 <p>Fetches the advances for a sequence of glyph IDs in the specified
3233 font, for vertical text segments.</p>
3234 <div class="refsect3">
3235 <a name="hb-font-get-glyph-v-advances.parameters"></a><h4>Parameters</h4>
3236 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3237 <colgroup>
3238 <col width="150px" class="parameters_name">
3239 <col class="parameters_description">
3240 <col width="200px" class="parameters_annotations">
3241 </colgroup>
3242 <tbody>
3243 <tr>
3244 <td class="parameter_name"><p>font</p></td>
3245 <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>
3246 <td class="parameter_annotations"> </td>
3247 </tr>
3248 <tr>
3249 <td class="parameter_name"><p>count</p></td>
3250 <td class="parameter_description"><p>The number of glyph IDs in the sequence queried</p></td>
3251 <td class="parameter_annotations"> </td>
3252 </tr>
3253 <tr>
3254 <td class="parameter_name"><p>first_glyph</p></td>
3255 <td class="parameter_description"><p>The first glyph ID to query</p></td>
3256 <td class="parameter_annotations"> </td>
3257 </tr>
3258 <tr>
3259 <td class="parameter_name"><p>glyph_stride</p></td>
3260 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
3261 <td class="parameter_annotations"> </td>
3262 </tr>
3263 <tr>
3264 <td class="parameter_name"><p>first_advance</p></td>
3265 <td class="parameter_description"><p>The first advance retrieved. </p></td>
3266 <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>
3267 </tr>
3268 <tr>
3269 <td class="parameter_name"><p>advance_stride</p></td>
3270 <td class="parameter_description"><p>The stride between successive advances. </p></td>
3271 <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>
3272 </tr>
3273 </tbody>
3274 </table></div>
3275 </div>
3276 <p class="since">Since: <a class="link" href="api-index-1-8-6.html#api-index-1.8.6">1.8.6</a></p>
3277 </div>
3278 <hr>
3279 <div class="refsect2">
3280 <a name="hb-font-get-glyph-v-origin"></a><h3>hb_font_get_glyph_v_origin ()</h3>
3281 <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>
3282 hb_font_get_glyph_v_origin (<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>,
3283                             <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>,
3284                             <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> *x</code></em>,
3285                             <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> *y</code></em>);</pre>
3286 <p>Fetches the (X,Y) coordinates of the origin for a glyph ID
3287 in the specified font, for vertical text segments.</p>
3288 <div class="refsect3">
3289 <a name="hb-font-get-glyph-v-origin.parameters"></a><h4>Parameters</h4>
3290 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3291 <colgroup>
3292 <col width="150px" class="parameters_name">
3293 <col class="parameters_description">
3294 <col width="200px" class="parameters_annotations">
3295 </colgroup>
3296 <tbody>
3297 <tr>
3298 <td class="parameter_name"><p>font</p></td>
3299 <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>
3300 <td class="parameter_annotations"> </td>
3301 </tr>
3302 <tr>
3303 <td class="parameter_name"><p>glyph</p></td>
3304 <td class="parameter_description"><p>The glyph ID to query</p></td>
3305 <td class="parameter_annotations"> </td>
3306 </tr>
3307 <tr>
3308 <td class="parameter_name"><p>x</p></td>
3309 <td class="parameter_description"><p>The X coordinate of the origin. </p></td>
3310 <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>
3311 </tr>
3312 <tr>
3313 <td class="parameter_name"><p>y</p></td>
3314 <td class="parameter_description"><p>The Y coordinate of the origin. </p></td>
3315 <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>
3316 </tr>
3317 </tbody>
3318 </table></div>
3319 </div>
3320 <div class="refsect3">
3321 <a name="hb-font-get-glyph-v-origin.returns"></a><h4>Returns</h4>
3322 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3323 </div>
3324 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3325 </div>
3326 <hr>
3327 <div class="refsect2">
3328 <a name="hb-font-get-nominal-glyph"></a><h3>hb_font_get_nominal_glyph ()</h3>
3329 <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>
3330 hb_font_get_nominal_glyph (<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>,
3331                            <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> unicode</code></em>,
3332                            <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>
3333 <p>Fetches the nominal glyph ID for a Unicode code point in the
3334 specified font.</p>
3335 <p>This version of the function should not be used to fetch glyph IDs
3336 for code points modified by variation selectors. For variation-selector
3337 support, user <a class="link" href="harfbuzz-hb-font.html#hb-font-get-variation-glyph" title="hb_font_get_variation_glyph ()"><code class="function">hb_font_get_variation_glyph()</code></a> or use <a class="link" href="harfbuzz-hb-font.html#hb-font-get-glyph" title="hb_font_get_glyph ()"><code class="function">hb_font_get_glyph()</code></a>.</p>
3338 <div class="refsect3">
3339 <a name="hb-font-get-nominal-glyph.parameters"></a><h4>Parameters</h4>
3340 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3341 <colgroup>
3342 <col width="150px" class="parameters_name">
3343 <col class="parameters_description">
3344 <col width="200px" class="parameters_annotations">
3345 </colgroup>
3346 <tbody>
3347 <tr>
3348 <td class="parameter_name"><p>font</p></td>
3349 <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>
3350 <td class="parameter_annotations"> </td>
3351 </tr>
3352 <tr>
3353 <td class="parameter_name"><p>unicode</p></td>
3354 <td class="parameter_description"><p>The Unicode code point to query</p></td>
3355 <td class="parameter_annotations"> </td>
3356 </tr>
3357 <tr>
3358 <td class="parameter_name"><p>glyph</p></td>
3359 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
3360 <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>
3361 </tr>
3362 </tbody>
3363 </table></div>
3364 </div>
3365 <div class="refsect3">
3366 <a name="hb-font-get-nominal-glyph.returns"></a><h4>Returns</h4>
3367 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3368 </div>
3369 <p class="since">Since: <a class="link" href="api-index-1-2-3.html#api-index-1.2.3">1.2.3</a></p>
3370 </div>
3371 <hr>
3372 <div class="refsect2">
3373 <a name="hb-font-get-nominal-glyph-func-t"></a><h3>hb_font_get_nominal_glyph_func_t ()</h3>
3374 <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>
3375 <span class="c_punctuation">(</span>*hb_font_get_nominal_glyph_func_t<span class="c_punctuation">)</span> (<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>,
3376                                      <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
3377                                      <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> unicode</code></em>,
3378                                      <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>,
3379                                      <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
3380 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
3381 <p>This method should retrieve the nominal glyph ID for a specified Unicode code
3382 point. Glyph IDs must be returned in a <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> output parameter.</p>
3383 <div class="refsect3">
3384 <a name="hb-font-get-nominal-glyph-func-t.parameters"></a><h4>Parameters</h4>
3385 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3386 <colgroup>
3387 <col width="150px" class="parameters_name">
3388 <col class="parameters_description">
3389 <col width="200px" class="parameters_annotations">
3390 </colgroup>
3391 <tbody>
3392 <tr>
3393 <td class="parameter_name"><p>font</p></td>
3394 <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>
3395 <td class="parameter_annotations"> </td>
3396 </tr>
3397 <tr>
3398 <td class="parameter_name"><p>font_data</p></td>
3399 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
3400 user data pointer</p></td>
3401 <td class="parameter_annotations"> </td>
3402 </tr>
3403 <tr>
3404 <td class="parameter_name"><p>unicode</p></td>
3405 <td class="parameter_description"><p>The Unicode code point to query</p></td>
3406 <td class="parameter_annotations"> </td>
3407 </tr>
3408 <tr>
3409 <td class="parameter_name"><p>glyph</p></td>
3410 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
3411 <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>
3412 </tr>
3413 <tr>
3414 <td class="parameter_name"><p>user_data</p></td>
3415 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
3416 <td class="parameter_annotations"> </td>
3417 </tr>
3418 </tbody>
3419 </table></div>
3420 </div>
3421 <div class="refsect3">
3422 <a name="hb-font-get-nominal-glyph-func-t.returns"></a><h4>Returns</h4>
3423 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3424 </div>
3425 </div>
3426 <hr>
3427 <div class="refsect2">
3428 <a name="hb-font-get-nominal-glyphs"></a><h3>hb_font_get_nominal_glyphs ()</h3>
3429 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
3430 hb_font_get_nominal_glyphs (<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>,
3431                             <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
3432                             <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_unicode</code></em>,
3433                             <em class="parameter"><code>unsigned <span class="type">int</span> unicode_stride</code></em>,
3434                             <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> *first_glyph</code></em>,
3435                             <em class="parameter"><code>unsigned <span class="type">int</span> glyph_stride</code></em>);</pre>
3436 <p>Fetches the nominal glyph IDs for a sequence of Unicode code points. Glyph
3437 IDs must be returned in a <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> output parameter.</p>
3438 <div class="refsect3">
3439 <a name="hb-font-get-nominal-glyphs.parameters"></a><h4>Parameters</h4>
3440 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3441 <colgroup>
3442 <col width="150px" class="parameters_name">
3443 <col class="parameters_description">
3444 <col width="200px" class="parameters_annotations">
3445 </colgroup>
3446 <tbody>
3447 <tr>
3448 <td class="parameter_name"><p>font</p></td>
3449 <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>
3450 <td class="parameter_annotations"> </td>
3451 </tr>
3452 <tr>
3453 <td class="parameter_name"><p>count</p></td>
3454 <td class="parameter_description"><p>number of code points to query</p></td>
3455 <td class="parameter_annotations"> </td>
3456 </tr>
3457 <tr>
3458 <td class="parameter_name"><p>first_unicode</p></td>
3459 <td class="parameter_description"><p>The first Unicode code point to query</p></td>
3460 <td class="parameter_annotations"> </td>
3461 </tr>
3462 <tr>
3463 <td class="parameter_name"><p>unicode_stride</p></td>
3464 <td class="parameter_description"><p>The stride between successive code points</p></td>
3465 <td class="parameter_annotations"> </td>
3466 </tr>
3467 <tr>
3468 <td class="parameter_name"><p>first_glyph</p></td>
3469 <td class="parameter_description"><p>The first glyph ID retrieved. </p></td>
3470 <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>
3471 </tr>
3472 <tr>
3473 <td class="parameter_name"><p>glyph_stride</p></td>
3474 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
3475 <td class="parameter_annotations"> </td>
3476 </tr>
3477 </tbody>
3478 </table></div>
3479 </div>
3480 <div class="refsect3">
3481 <a name="hb-font-get-nominal-glyphs.returns"></a><h4>Returns</h4>
3482 <p> the number of code points processed</p>
3483 </div>
3484 <p class="since">Since: <a class="link" href="api-index-2-6-3.html#api-index-2.6.3">2.6.3</a></p>
3485 </div>
3486 <hr>
3487 <div class="refsect2">
3488 <a name="hb-font-get-nominal-glyphs-func-t"></a><h3>hb_font_get_nominal_glyphs_func_t ()</h3>
3489 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
3490 <span class="c_punctuation">(</span>*hb_font_get_nominal_glyphs_func_t<span class="c_punctuation">)</span> (<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>,
3491                                       <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
3492                                       <em class="parameter"><code>unsigned <span class="type">int</span> count</code></em>,
3493                                       <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> *first_unicode</code></em>,
3494                                       <em class="parameter"><code>unsigned <span class="type">int</span> unicode_stride</code></em>,
3495                                       <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> *first_glyph</code></em>,
3496                                       <em class="parameter"><code>unsigned <span class="type">int</span> glyph_stride</code></em>,
3497                                       <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
3498 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
3499 <p>This method should retrieve the nominal glyph IDs for a sequence of
3500 Unicode code points. Glyph IDs must be returned in a <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a>
3501 output parameter.</p>
3502 <div class="refsect3">
3503 <a name="hb-font-get-nominal-glyphs-func-t.parameters"></a><h4>Parameters</h4>
3504 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3505 <colgroup>
3506 <col width="150px" class="parameters_name">
3507 <col class="parameters_description">
3508 <col width="200px" class="parameters_annotations">
3509 </colgroup>
3510 <tbody>
3511 <tr>
3512 <td class="parameter_name"><p>font</p></td>
3513 <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>
3514 <td class="parameter_annotations"> </td>
3515 </tr>
3516 <tr>
3517 <td class="parameter_name"><p>font_data</p></td>
3518 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
3519 user data pointer</p></td>
3520 <td class="parameter_annotations"> </td>
3521 </tr>
3522 <tr>
3523 <td class="parameter_name"><p>count</p></td>
3524 <td class="parameter_description"><p>number of code points to query</p></td>
3525 <td class="parameter_annotations"> </td>
3526 </tr>
3527 <tr>
3528 <td class="parameter_name"><p>first_unicode</p></td>
3529 <td class="parameter_description"><p>The first Unicode code point to query</p></td>
3530 <td class="parameter_annotations"> </td>
3531 </tr>
3532 <tr>
3533 <td class="parameter_name"><p>unicode_stride</p></td>
3534 <td class="parameter_description"><p>The stride between successive code points</p></td>
3535 <td class="parameter_annotations"> </td>
3536 </tr>
3537 <tr>
3538 <td class="parameter_name"><p>first_glyph</p></td>
3539 <td class="parameter_description"><p>The first glyph ID retrieved. </p></td>
3540 <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>
3541 </tr>
3542 <tr>
3543 <td class="parameter_name"><p>glyph_stride</p></td>
3544 <td class="parameter_description"><p>The stride between successive glyph IDs</p></td>
3545 <td class="parameter_annotations"> </td>
3546 </tr>
3547 <tr>
3548 <td class="parameter_name"><p>user_data</p></td>
3549 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
3550 <td class="parameter_annotations"> </td>
3551 </tr>
3552 </tbody>
3553 </table></div>
3554 </div>
3555 <div class="refsect3">
3556 <a name="hb-font-get-nominal-glyphs-func-t.returns"></a><h4>Returns</h4>
3557 <p> the number of code points processed</p>
3558 </div>
3559 </div>
3560 <hr>
3561 <div class="refsect2">
3562 <a name="hb-font-get-parent"></a><h3>hb_font_get_parent ()</h3>
3563 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
3564 hb_font_get_parent (<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>);</pre>
3565 <p>Fetches the parent font of <em class="parameter"><code>font</code></em>
3566 .</p>
3567 <div class="refsect3">
3568 <a name="hb-font-get-parent.parameters"></a><h4>Parameters</h4>
3569 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3570 <colgroup>
3571 <col width="150px" class="parameters_name">
3572 <col class="parameters_description">
3573 <col width="200px" class="parameters_annotations">
3574 </colgroup>
3575 <tbody><tr>
3576 <td class="parameter_name"><p>font</p></td>
3577 <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>
3578 <td class="parameter_annotations"> </td>
3579 </tr></tbody>
3580 </table></div>
3581 </div>
3582 <div class="refsect3">
3583 <a name="hb-font-get-parent.returns"></a><h4>Returns</h4>
3584 <p>The parent font object. </p>
3585 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
3586 </div>
3587 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3588 </div>
3589 <hr>
3590 <div class="refsect2">
3591 <a name="hb-font-get-ppem"></a><h3>hb_font_get_ppem ()</h3>
3592 <pre class="programlisting"><span class="returnvalue">void</span>
3593 hb_font_get_ppem (<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>,
3594                   <em class="parameter"><code>unsigned <span class="type">int</span> *x_ppem</code></em>,
3595                   <em class="parameter"><code>unsigned <span class="type">int</span> *y_ppem</code></em>);</pre>
3596 <p>Fetches the horizontal and vertical points-per-em (ppem) of a font.</p>
3597 <div class="refsect3">
3598 <a name="hb-font-get-ppem.parameters"></a><h4>Parameters</h4>
3599 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3600 <colgroup>
3601 <col width="150px" class="parameters_name">
3602 <col class="parameters_description">
3603 <col width="200px" class="parameters_annotations">
3604 </colgroup>
3605 <tbody>
3606 <tr>
3607 <td class="parameter_name"><p>font</p></td>
3608 <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>
3609 <td class="parameter_annotations"> </td>
3610 </tr>
3611 <tr>
3612 <td class="parameter_name"><p>x_ppem</p></td>
3613 <td class="parameter_description"><p>Horizontal ppem value. </p></td>
3614 <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>
3615 </tr>
3616 <tr>
3617 <td class="parameter_name"><p>y_ppem</p></td>
3618 <td class="parameter_description"><p>Vertical ppem value. </p></td>
3619 <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>
3620 </tr>
3621 </tbody>
3622 </table></div>
3623 </div>
3624 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3625 </div>
3626 <hr>
3627 <div class="refsect2">
3628 <a name="hb-font-get-ptem"></a><h3>hb_font_get_ptem ()</h3>
3629 <pre class="programlisting"><span class="returnvalue">float</span>
3630 hb_font_get_ptem (<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>);</pre>
3631 <p>Fetches the "point size" of a font. Used in CoreText to
3632 implement optical sizing.</p>
3633 <div class="refsect3">
3634 <a name="hb-font-get-ptem.parameters"></a><h4>Parameters</h4>
3635 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3636 <colgroup>
3637 <col width="150px" class="parameters_name">
3638 <col class="parameters_description">
3639 <col width="200px" class="parameters_annotations">
3640 </colgroup>
3641 <tbody><tr>
3642 <td class="parameter_name"><p>font</p></td>
3643 <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>
3644 <td class="parameter_annotations"> </td>
3645 </tr></tbody>
3646 </table></div>
3647 </div>
3648 <div class="refsect3">
3649 <a name="hb-font-get-ptem.returns"></a><h4>Returns</h4>
3650 <p> Point size.  A value of zero means "not set."</p>
3651 </div>
3652 <p class="since">Since: <a class="link" href="api-index-1-6-0.html#api-index-1.6.0">1.6.0</a></p>
3653 </div>
3654 <hr>
3655 <div class="refsect2">
3656 <a name="hb-font-get-scale"></a><h3>hb_font_get_scale ()</h3>
3657 <pre class="programlisting"><span class="returnvalue">void</span>
3658 hb_font_get_scale (<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>,
3659                    <em class="parameter"><code><span class="type">int</span> *x_scale</code></em>,
3660                    <em class="parameter"><code><span class="type">int</span> *y_scale</code></em>);</pre>
3661 <p>Fetches the horizontal and vertical scale of a font.</p>
3662 <div class="refsect3">
3663 <a name="hb-font-get-scale.parameters"></a><h4>Parameters</h4>
3664 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3665 <colgroup>
3666 <col width="150px" class="parameters_name">
3667 <col class="parameters_description">
3668 <col width="200px" class="parameters_annotations">
3669 </colgroup>
3670 <tbody>
3671 <tr>
3672 <td class="parameter_name"><p>font</p></td>
3673 <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>
3674 <td class="parameter_annotations"> </td>
3675 </tr>
3676 <tr>
3677 <td class="parameter_name"><p>x_scale</p></td>
3678 <td class="parameter_description"><p>Horizontal scale value. </p></td>
3679 <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>
3680 </tr>
3681 <tr>
3682 <td class="parameter_name"><p>y_scale</p></td>
3683 <td class="parameter_description"><p>Vertical scale value. </p></td>
3684 <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>
3685 </tr>
3686 </tbody>
3687 </table></div>
3688 </div>
3689 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3690 </div>
3691 <hr>
3692 <div class="refsect2">
3693 <a name="hb-font-get-synthetic-slant"></a><h3>hb_font_get_synthetic_slant ()</h3>
3694 <pre class="programlisting"><span class="returnvalue">float</span>
3695 hb_font_get_synthetic_slant (<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>);</pre>
3696 <p>Fetches the "synthetic slant" of a font.</p>
3697 <div class="refsect3">
3698 <a name="hb-font-get-synthetic-slant.parameters"></a><h4>Parameters</h4>
3699 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3700 <colgroup>
3701 <col width="150px" class="parameters_name">
3702 <col class="parameters_description">
3703 <col width="200px" class="parameters_annotations">
3704 </colgroup>
3705 <tbody><tr>
3706 <td class="parameter_name"><p>font</p></td>
3707 <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>
3708 <td class="parameter_annotations"> </td>
3709 </tr></tbody>
3710 </table></div>
3711 </div>
3712 <div class="refsect3">
3713 <a name="hb-font-get-synthetic-slant.returns"></a><h4>Returns</h4>
3714 <p> Synthetic slant.  By default is zero.</p>
3715 </div>
3716 <p class="since">Since: <a class="link" href="api-index-3-3-0.html#api-index-3.3.0">3.3.0</a></p>
3717 </div>
3718 <hr>
3719 <div class="refsect2">
3720 <a name="hb-font-get-user-data"></a><h3>hb_font_get_user_data ()</h3>
3721 <pre class="programlisting"><span class="returnvalue">void</span> *
3722 hb_font_get_user_data (<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>,
3723                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t" title="hb_user_data_key_t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>);</pre>
3724 <p>Fetches the user-data object associated with the specified key,
3725 attached to the specified font object.</p>
3726 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
3727 <div class="refsect3">
3728 <a name="hb-font-get-user-data.parameters"></a><h4>Parameters</h4>
3729 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3730 <colgroup>
3731 <col width="150px" class="parameters_name">
3732 <col class="parameters_description">
3733 <col width="200px" class="parameters_annotations">
3734 </colgroup>
3735 <tbody>
3736 <tr>
3737 <td class="parameter_name"><p>font</p></td>
3738 <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>
3739 <td class="parameter_annotations"> </td>
3740 </tr>
3741 <tr>
3742 <td class="parameter_name"><p>key</p></td>
3743 <td class="parameter_description"><p>The user-data key to query</p></td>
3744 <td class="parameter_annotations"> </td>
3745 </tr>
3746 </tbody>
3747 </table></div>
3748 </div>
3749 <div class="refsect3">
3750 <a name="hb-font-get-user-data.returns"></a><h4>Returns</h4>
3751 <p>Pointer to the user data. </p>
3752 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
3753 </div>
3754 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3755 </div>
3756 <hr>
3757 <div class="refsect2">
3758 <a name="hb-font-get-variation-glyph"></a><h3>hb_font_get_variation_glyph ()</h3>
3759 <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>
3760 hb_font_get_variation_glyph (<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>,
3761                              <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> unicode</code></em>,
3762                              <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> variation_selector</code></em>,
3763                              <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>
3764 <p>Fetches the glyph ID for a Unicode code point when followed by
3765 by the specified variation-selector code point, in the specified
3766 font.</p>
3767 <div class="refsect3">
3768 <a name="hb-font-get-variation-glyph.parameters"></a><h4>Parameters</h4>
3769 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3770 <colgroup>
3771 <col width="150px" class="parameters_name">
3772 <col class="parameters_description">
3773 <col width="200px" class="parameters_annotations">
3774 </colgroup>
3775 <tbody>
3776 <tr>
3777 <td class="parameter_name"><p>font</p></td>
3778 <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>
3779 <td class="parameter_annotations"> </td>
3780 </tr>
3781 <tr>
3782 <td class="parameter_name"><p>unicode</p></td>
3783 <td class="parameter_description"><p>The Unicode code point to query</p></td>
3784 <td class="parameter_annotations"> </td>
3785 </tr>
3786 <tr>
3787 <td class="parameter_name"><p>variation_selector</p></td>
3788 <td class="parameter_description"><p>The  variation-selector code point to query</p></td>
3789 <td class="parameter_annotations"> </td>
3790 </tr>
3791 <tr>
3792 <td class="parameter_name"><p>glyph</p></td>
3793 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
3794 <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>
3795 </tr>
3796 </tbody>
3797 </table></div>
3798 </div>
3799 <div class="refsect3">
3800 <a name="hb-font-get-variation-glyph.returns"></a><h4>Returns</h4>
3801 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3802 </div>
3803 <p class="since">Since: <a class="link" href="api-index-1-2-3.html#api-index-1.2.3">1.2.3</a></p>
3804 </div>
3805 <hr>
3806 <div class="refsect2">
3807 <a name="hb-font-get-variation-glyph-func-t"></a><h3>hb_font_get_variation_glyph_func_t ()</h3>
3808 <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>
3809 <span class="c_punctuation">(</span>*hb_font_get_variation_glyph_func_t<span class="c_punctuation">)</span> (<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>,
3810                                        <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
3811                                        <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> unicode</code></em>,
3812                                        <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> variation_selector</code></em>,
3813                                        <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>,
3814                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
3815 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
3816 <p>This method should retrieve the glyph ID for a specified Unicode code point
3817 followed by a specified Variation Selector code point. Glyph IDs must be
3818 returned in a <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> output parameter.</p>
3819 <div class="refsect3">
3820 <a name="hb-font-get-variation-glyph-func-t.parameters"></a><h4>Parameters</h4>
3821 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3822 <colgroup>
3823 <col width="150px" class="parameters_name">
3824 <col class="parameters_description">
3825 <col width="200px" class="parameters_annotations">
3826 </colgroup>
3827 <tbody>
3828 <tr>
3829 <td class="parameter_name"><p>font</p></td>
3830 <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>
3831 <td class="parameter_annotations"> </td>
3832 </tr>
3833 <tr>
3834 <td class="parameter_name"><p>font_data</p></td>
3835 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
3836 user data pointer</p></td>
3837 <td class="parameter_annotations"> </td>
3838 </tr>
3839 <tr>
3840 <td class="parameter_name"><p>unicode</p></td>
3841 <td class="parameter_description"><p>The Unicode code point to query</p></td>
3842 <td class="parameter_annotations"> </td>
3843 </tr>
3844 <tr>
3845 <td class="parameter_name"><p>variation_selector</p></td>
3846 <td class="parameter_description"><p>The  variation-selector code point to query</p></td>
3847 <td class="parameter_annotations"> </td>
3848 </tr>
3849 <tr>
3850 <td class="parameter_name"><p>glyph</p></td>
3851 <td class="parameter_description"><p>The glyph ID retrieved. </p></td>
3852 <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>
3853 </tr>
3854 <tr>
3855 <td class="parameter_name"><p>user_data</p></td>
3856 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
3857 <td class="parameter_annotations"> </td>
3858 </tr>
3859 </tbody>
3860 </table></div>
3861 </div>
3862 <div class="refsect3">
3863 <a name="hb-font-get-variation-glyph-func-t.returns"></a><h4>Returns</h4>
3864 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3865 </div>
3866 </div>
3867 <hr>
3868 <div class="refsect2">
3869 <a name="hb-font-get-var-coords-design"></a><h3>hb_font_get_var_coords_design ()</h3>
3870 <pre class="programlisting">const <span class="returnvalue">float</span> *
3871 hb_font_get_var_coords_design (<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>,
3872                                <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre>
3873 <p>Fetches the list of variation coordinates (in design-space units) currently
3874 set on a font.</p>
3875 <p>Note that this returned array may only contain values for some
3876 (or none) of the axes; omitted axes effectively have their default
3877 values.</p>
3878 <p>Return value is valid as long as variation coordinates of the font
3879 are not modified.</p>
3880 <div class="refsect3">
3881 <a name="hb-font-get-var-coords-design.parameters"></a><h4>Parameters</h4>
3882 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3883 <colgroup>
3884 <col width="150px" class="parameters_name">
3885 <col class="parameters_description">
3886 <col width="200px" class="parameters_annotations">
3887 </colgroup>
3888 <tbody>
3889 <tr>
3890 <td class="parameter_name"><p>font</p></td>
3891 <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>
3892 <td class="parameter_annotations"> </td>
3893 </tr>
3894 <tr>
3895 <td class="parameter_name"><p>length</p></td>
3896 <td class="parameter_description"><p>Number of coordinates retrieved. </p></td>
3897 <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>
3898 </tr>
3899 </tbody>
3900 </table></div>
3901 </div>
3902 <div class="refsect3">
3903 <a name="hb-font-get-var-coords-design.returns"></a><h4>Returns</h4>
3904 <p> coordinates array</p>
3905 </div>
3906 <p class="since">Since: <a class="link" href="api-index-3-3-0.html#api-index-3.3.0">3.3.0</a></p>
3907 </div>
3908 <hr>
3909 <div class="refsect2">
3910 <a name="hb-font-get-var-coords-normalized"></a><h3>hb_font_get_var_coords_normalized ()</h3>
3911 <pre class="programlisting">const <span class="returnvalue">int</span> *
3912 hb_font_get_var_coords_normalized (<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>,
3913                                    <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre>
3914 <p>Fetches the list of normalized variation coordinates currently
3915 set on a font.</p>
3916 <p>Note that this returned array may only contain values for some
3917 (or none) of the axes; omitted axes effectively have zero values.</p>
3918 <p>Return value is valid as long as variation coordinates of the font
3919 are not modified.</p>
3920 <div class="refsect3">
3921 <a name="hb-font-get-var-coords-normalized.parameters"></a><h4>Parameters</h4>
3922 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3923 <colgroup>
3924 <col width="150px" class="parameters_name">
3925 <col class="parameters_description">
3926 <col width="200px" class="parameters_annotations">
3927 </colgroup>
3928 <tbody>
3929 <tr>
3930 <td class="parameter_name"><p>font</p></td>
3931 <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>
3932 <td class="parameter_annotations"> </td>
3933 </tr>
3934 <tr>
3935 <td class="parameter_name"><p>length</p></td>
3936 <td class="parameter_description"><p>Number of coordinates retrieved. </p></td>
3937 <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>
3938 </tr>
3939 </tbody>
3940 </table></div>
3941 </div>
3942 <div class="refsect3">
3943 <a name="hb-font-get-var-coords-normalized.returns"></a><h4>Returns</h4>
3944 <p> coordinates array</p>
3945 </div>
3946 <p class="since">Since: <a class="link" href="api-index-1-4-2.html#api-index-1.4.2">1.4.2</a></p>
3947 </div>
3948 <hr>
3949 <div class="refsect2">
3950 <a name="hb-font-glyph-from-string"></a><h3>hb_font_glyph_from_string ()</h3>
3951 <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>
3952 hb_font_glyph_from_string (<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>,
3953                            <em class="parameter"><code>const <span class="type">char</span> *s</code></em>,
3954                            <em class="parameter"><code><span class="type">int</span> len</code></em>,
3955                            <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>
3956 <p>Fetches the glyph ID from <em class="parameter"><code>font</code></em>
3957  that matches the specified string.
3958 Strings of the format <code class="literal">gidDDD</code> or <code class="literal">uniUUUU</code> are parsed automatically.</p>
3959 <div class="note">Note: <em class="parameter"><code>len</code></em> == -1 means the string is null-terminated.</div>
3960 <div class="refsect3">
3961 <a name="hb-font-glyph-from-string.parameters"></a><h4>Parameters</h4>
3962 <div class="informaltable"><table class="informaltable" width="100%" border="0">
3963 <colgroup>
3964 <col width="150px" class="parameters_name">
3965 <col class="parameters_description">
3966 <col width="200px" class="parameters_annotations">
3967 </colgroup>
3968 <tbody>
3969 <tr>
3970 <td class="parameter_name"><p>font</p></td>
3971 <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>
3972 <td class="parameter_annotations"> </td>
3973 </tr>
3974 <tr>
3975 <td class="parameter_name"><p>s</p></td>
3976 <td class="parameter_description"><p>string to query. </p></td>
3977 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=len][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
3978 </tr>
3979 <tr>
3980 <td class="parameter_name"><p>len</p></td>
3981 <td class="parameter_description"><p>The length of the string <em class="parameter"><code>s</code></em>
3982 </p></td>
3983 <td class="parameter_annotations"> </td>
3984 </tr>
3985 <tr>
3986 <td class="parameter_name"><p>glyph</p></td>
3987 <td class="parameter_description"><p>The glyph ID corresponding to the string requested. </p></td>
3988 <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>
3989 </tr>
3990 </tbody>
3991 </table></div>
3992 </div>
3993 <div class="refsect3">
3994 <a name="hb-font-glyph-from-string.returns"></a><h4>Returns</h4>
3995 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
3996 </div>
3997 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
3998 </div>
3999 <hr>
4000 <div class="refsect2">
4001 <a name="hb-font-glyph-to-string"></a><h3>hb_font_glyph_to_string ()</h3>
4002 <pre class="programlisting"><span class="returnvalue">void</span>
4003 hb_font_glyph_to_string (<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>,
4004                          <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>,
4005                          <em class="parameter"><code><span class="type">char</span> *s</code></em>,
4006                          <em class="parameter"><code>unsigned <span class="type">int</span> size</code></em>);</pre>
4007 <p>Fetches the name of the specified glyph ID in <em class="parameter"><code>font</code></em>
4008  and returns
4009 it in string <em class="parameter"><code>s</code></em>
4010 .</p>
4011 <p>If the glyph ID has no name in <em class="parameter"><code>font</code></em>
4012 , a string of the form <code class="literal">gidDDD</code> is
4013 generated, with <code class="literal">DDD</code> being the glyph ID.</p>
4014 <div class="refsect3">
4015 <a name="hb-font-glyph-to-string.parameters"></a><h4>Parameters</h4>
4016 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4017 <colgroup>
4018 <col width="150px" class="parameters_name">
4019 <col class="parameters_description">
4020 <col width="200px" class="parameters_annotations">
4021 </colgroup>
4022 <tbody>
4023 <tr>
4024 <td class="parameter_name"><p>font</p></td>
4025 <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>
4026 <td class="parameter_annotations"> </td>
4027 </tr>
4028 <tr>
4029 <td class="parameter_name"><p>glyph</p></td>
4030 <td class="parameter_description"><p>The glyph ID to query</p></td>
4031 <td class="parameter_annotations"> </td>
4032 </tr>
4033 <tr>
4034 <td class="parameter_name"><p>s</p></td>
4035 <td class="parameter_description"><p>The string containing the glyph name. </p></td>
4036 <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=size]</span></td>
4037 </tr>
4038 <tr>
4039 <td class="parameter_name"><p>size</p></td>
4040 <td class="parameter_description"><p>Length of string <em class="parameter"><code>s</code></em>
4041 </p></td>
4042 <td class="parameter_annotations"> </td>
4043 </tr>
4044 </tbody>
4045 </table></div>
4046 </div>
4047 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4048 </div>
4049 <hr>
4050 <div class="refsect2">
4051 <a name="hb-font-is-immutable"></a><h3>hb_font_is_immutable ()</h3>
4052 <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>
4053 hb_font_is_immutable (<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>);</pre>
4054 <p>Tests whether a font object is immutable.</p>
4055 <div class="refsect3">
4056 <a name="hb-font-is-immutable.parameters"></a><h4>Parameters</h4>
4057 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4058 <colgroup>
4059 <col width="150px" class="parameters_name">
4060 <col class="parameters_description">
4061 <col width="200px" class="parameters_annotations">
4062 </colgroup>
4063 <tbody><tr>
4064 <td class="parameter_name"><p>font</p></td>
4065 <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>
4066 <td class="parameter_annotations"> </td>
4067 </tr></tbody>
4068 </table></div>
4069 </div>
4070 <div class="refsect3">
4071 <a name="hb-font-is-immutable.returns"></a><h4>Returns</h4>
4072 <p> <code class="literal">true</code> if <em class="parameter"><code>font</code></em>
4073 is immutable, <code class="literal">false</code> otherwise</p>
4074 </div>
4075 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4076 </div>
4077 <hr>
4078 <div class="refsect2">
4079 <a name="hb-font-make-immutable"></a><h3>hb_font_make_immutable ()</h3>
4080 <pre class="programlisting"><span class="returnvalue">void</span>
4081 hb_font_make_immutable (<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>);</pre>
4082 <p>Makes <em class="parameter"><code>font</code></em>
4083  immutable.</p>
4084 <div class="refsect3">
4085 <a name="hb-font-make-immutable.parameters"></a><h4>Parameters</h4>
4086 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4087 <colgroup>
4088 <col width="150px" class="parameters_name">
4089 <col class="parameters_description">
4090 <col width="200px" class="parameters_annotations">
4091 </colgroup>
4092 <tbody><tr>
4093 <td class="parameter_name"><p>font</p></td>
4094 <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>
4095 <td class="parameter_annotations"> </td>
4096 </tr></tbody>
4097 </table></div>
4098 </div>
4099 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4100 </div>
4101 <hr>
4102 <div class="refsect2">
4103 <a name="hb-font-reference"></a><h3>hb_font_reference ()</h3>
4104 <pre class="programlisting"><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="returnvalue">hb_font_t</span></a> *
4105 hb_font_reference (<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>);</pre>
4106 <p>Increases the reference count on the given font object.</p>
4107 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
4108 <div class="refsect3">
4109 <a name="hb-font-reference.parameters"></a><h4>Parameters</h4>
4110 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4111 <colgroup>
4112 <col width="150px" class="parameters_name">
4113 <col class="parameters_description">
4114 <col width="200px" class="parameters_annotations">
4115 </colgroup>
4116 <tbody><tr>
4117 <td class="parameter_name"><p>font</p></td>
4118 <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>
4119 <td class="parameter_annotations"> </td>
4120 </tr></tbody>
4121 </table></div>
4122 </div>
4123 <div class="refsect3">
4124 <a name="hb-font-reference.returns"></a><h4>Returns</h4>
4125 <p>The <em class="parameter"><code>font</code></em>
4126 object. </p>
4127 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
4128 </div>
4129 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4130 </div>
4131 <hr>
4132 <div class="refsect2">
4133 <a name="hb-font-set-face"></a><h3>hb_font_set_face ()</h3>
4134 <pre class="programlisting"><span class="returnvalue">void</span>
4135 hb_font_set_face (<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>,
4136                   <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>
4137 <p>Sets <em class="parameter"><code>face</code></em>
4138  as the font-face value of <em class="parameter"><code>font</code></em>
4139 .</p>
4140 <div class="refsect3">
4141 <a name="hb-font-set-face.parameters"></a><h4>Parameters</h4>
4142 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4143 <colgroup>
4144 <col width="150px" class="parameters_name">
4145 <col class="parameters_description">
4146 <col width="200px" class="parameters_annotations">
4147 </colgroup>
4148 <tbody>
4149 <tr>
4150 <td class="parameter_name"><p>font</p></td>
4151 <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>
4152 <td class="parameter_annotations"> </td>
4153 </tr>
4154 <tr>
4155 <td class="parameter_name"><p>face</p></td>
4156 <td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> to assign</p></td>
4157 <td class="parameter_annotations"> </td>
4158 </tr>
4159 </tbody>
4160 </table></div>
4161 </div>
4162 <p class="since">Since: <a class="link" href="api-index-1-4-3.html#api-index-1.4.3">1.4.3</a></p>
4163 </div>
4164 <hr>
4165 <div class="refsect2">
4166 <a name="hb-font-set-funcs"></a><h3>hb_font_set_funcs ()</h3>
4167 <pre class="programlisting"><span class="returnvalue">void</span>
4168 hb_font_set_funcs (<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>,
4169                    <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *klass</code></em>,
4170                    <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
4171                    <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
4172 <p>Replaces the font-functions structure attached to a font, updating
4173 the font's user-data with <em class="parameter"><code>font</code></em>
4174 -data and the <em class="parameter"><code>destroy</code></em>
4175  callback.</p>
4176 <div class="refsect3">
4177 <a name="hb-font-set-funcs.parameters"></a><h4>Parameters</h4>
4178 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4179 <colgroup>
4180 <col width="150px" class="parameters_name">
4181 <col class="parameters_description">
4182 <col width="200px" class="parameters_annotations">
4183 </colgroup>
4184 <tbody>
4185 <tr>
4186 <td class="parameter_name"><p>font</p></td>
4187 <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>
4188 <td class="parameter_annotations"> </td>
4189 </tr>
4190 <tr>
4191 <td class="parameter_name"><p>klass</p></td>
4192 <td class="parameter_description"><p>The font-functions structure. </p></td>
4193 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> font_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
4194 </tr>
4195 <tr>
4196 <td class="parameter_name"><p>font_data</p></td>
4197 <td class="parameter_description"><p>Data to attach to <em class="parameter"><code>font</code></em>
4198 </p></td>
4199 <td class="parameter_annotations"> </td>
4200 </tr>
4201 <tr>
4202 <td class="parameter_name"><p>destroy</p></td>
4203 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>font_data</code></em>
4204 is not needed anymore. </p></td>
4205 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
4206 </tr>
4207 </tbody>
4208 </table></div>
4209 </div>
4210 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4211 </div>
4212 <hr>
4213 <div class="refsect2">
4214 <a name="hb-font-set-funcs-data"></a><h3>hb_font_set_funcs_data ()</h3>
4215 <pre class="programlisting"><span class="returnvalue">void</span>
4216 hb_font_set_funcs_data (<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>,
4217                         <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
4218                         <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
4219 <p>Replaces the user data attached to a font, updating the font's
4220 <em class="parameter"><code>destroy</code></em>
4221  callback.</p>
4222 <div class="refsect3">
4223 <a name="hb-font-set-funcs-data.parameters"></a><h4>Parameters</h4>
4224 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4225 <colgroup>
4226 <col width="150px" class="parameters_name">
4227 <col class="parameters_description">
4228 <col width="200px" class="parameters_annotations">
4229 </colgroup>
4230 <tbody>
4231 <tr>
4232 <td class="parameter_name"><p>font</p></td>
4233 <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>
4234 <td class="parameter_annotations"> </td>
4235 </tr>
4236 <tr>
4237 <td class="parameter_name"><p>font_data</p></td>
4238 <td class="parameter_description"><p>Data to attach to <em class="parameter"><code>font</code></em>
4239 . </p></td>
4240 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
4241 </tr>
4242 <tr>
4243 <td class="parameter_name"><p>destroy</p></td>
4244 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>font_data</code></em>
4245 is not needed anymore. </p></td>
4246 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
4247 </tr>
4248 </tbody>
4249 </table></div>
4250 </div>
4251 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4252 </div>
4253 <hr>
4254 <div class="refsect2">
4255 <a name="hb-font-set-parent"></a><h3>hb_font_set_parent ()</h3>
4256 <pre class="programlisting"><span class="returnvalue">void</span>
4257 hb_font_set_parent (<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>,
4258                     <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> *parent</code></em>);</pre>
4259 <p>Sets the parent font of <em class="parameter"><code>font</code></em>
4260 .</p>
4261 <div class="refsect3">
4262 <a name="hb-font-set-parent.parameters"></a><h4>Parameters</h4>
4263 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4264 <colgroup>
4265 <col width="150px" class="parameters_name">
4266 <col class="parameters_description">
4267 <col width="200px" class="parameters_annotations">
4268 </colgroup>
4269 <tbody>
4270 <tr>
4271 <td class="parameter_name"><p>font</p></td>
4272 <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>
4273 <td class="parameter_annotations"> </td>
4274 </tr>
4275 <tr>
4276 <td class="parameter_name"><p>parent</p></td>
4277 <td class="parameter_description"><p>The parent font object to assign</p></td>
4278 <td class="parameter_annotations"> </td>
4279 </tr>
4280 </tbody>
4281 </table></div>
4282 </div>
4283 <p class="since">Since: <a class="link" href="api-index-1-0-5.html#api-index-1.0.5">1.0.5</a></p>
4284 </div>
4285 <hr>
4286 <div class="refsect2">
4287 <a name="hb-font-set-ppem"></a><h3>hb_font_set_ppem ()</h3>
4288 <pre class="programlisting"><span class="returnvalue">void</span>
4289 hb_font_set_ppem (<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>,
4290                   <em class="parameter"><code>unsigned <span class="type">int</span> x_ppem</code></em>,
4291                   <em class="parameter"><code>unsigned <span class="type">int</span> y_ppem</code></em>);</pre>
4292 <p>Sets the horizontal and vertical pixels-per-em (ppem) of a font.</p>
4293 <div class="refsect3">
4294 <a name="hb-font-set-ppem.parameters"></a><h4>Parameters</h4>
4295 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4296 <colgroup>
4297 <col width="150px" class="parameters_name">
4298 <col class="parameters_description">
4299 <col width="200px" class="parameters_annotations">
4300 </colgroup>
4301 <tbody>
4302 <tr>
4303 <td class="parameter_name"><p>font</p></td>
4304 <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>
4305 <td class="parameter_annotations"> </td>
4306 </tr>
4307 <tr>
4308 <td class="parameter_name"><p>x_ppem</p></td>
4309 <td class="parameter_description"><p>Horizontal ppem value to assign</p></td>
4310 <td class="parameter_annotations"> </td>
4311 </tr>
4312 <tr>
4313 <td class="parameter_name"><p>y_ppem</p></td>
4314 <td class="parameter_description"><p>Vertical ppem value to assign</p></td>
4315 <td class="parameter_annotations"> </td>
4316 </tr>
4317 </tbody>
4318 </table></div>
4319 </div>
4320 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4321 </div>
4322 <hr>
4323 <div class="refsect2">
4324 <a name="hb-font-set-ptem"></a><h3>hb_font_set_ptem ()</h3>
4325 <pre class="programlisting"><span class="returnvalue">void</span>
4326 hb_font_set_ptem (<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>,
4327                   <em class="parameter"><code><span class="type">float</span> ptem</code></em>);</pre>
4328 <p>Sets the "point size" of a font. Set to zero to unset.
4329 Used in CoreText to implement optical sizing.</p>
4330 <div class="note">Note: There are 72 points in an inch.</div>
4331 <div class="refsect3">
4332 <a name="hb-font-set-ptem.parameters"></a><h4>Parameters</h4>
4333 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4334 <colgroup>
4335 <col width="150px" class="parameters_name">
4336 <col class="parameters_description">
4337 <col width="200px" class="parameters_annotations">
4338 </colgroup>
4339 <tbody>
4340 <tr>
4341 <td class="parameter_name"><p>font</p></td>
4342 <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>
4343 <td class="parameter_annotations"> </td>
4344 </tr>
4345 <tr>
4346 <td class="parameter_name"><p>ptem</p></td>
4347 <td class="parameter_description"><p>font size in points.</p></td>
4348 <td class="parameter_annotations"> </td>
4349 </tr>
4350 </tbody>
4351 </table></div>
4352 </div>
4353 <p class="since">Since: <a class="link" href="api-index-1-6-0.html#api-index-1.6.0">1.6.0</a></p>
4354 </div>
4355 <hr>
4356 <div class="refsect2">
4357 <a name="hb-font-set-scale"></a><h3>hb_font_set_scale ()</h3>
4358 <pre class="programlisting"><span class="returnvalue">void</span>
4359 hb_font_set_scale (<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>,
4360                    <em class="parameter"><code><span class="type">int</span> x_scale</code></em>,
4361                    <em class="parameter"><code><span class="type">int</span> y_scale</code></em>);</pre>
4362 <p>Sets the horizontal and vertical scale of a font.</p>
4363 <div class="refsect3">
4364 <a name="hb-font-set-scale.parameters"></a><h4>Parameters</h4>
4365 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4366 <colgroup>
4367 <col width="150px" class="parameters_name">
4368 <col class="parameters_description">
4369 <col width="200px" class="parameters_annotations">
4370 </colgroup>
4371 <tbody>
4372 <tr>
4373 <td class="parameter_name"><p>font</p></td>
4374 <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>
4375 <td class="parameter_annotations"> </td>
4376 </tr>
4377 <tr>
4378 <td class="parameter_name"><p>x_scale</p></td>
4379 <td class="parameter_description"><p>Horizontal scale value to assign</p></td>
4380 <td class="parameter_annotations"> </td>
4381 </tr>
4382 <tr>
4383 <td class="parameter_name"><p>y_scale</p></td>
4384 <td class="parameter_description"><p>Vertical scale value to assign</p></td>
4385 <td class="parameter_annotations"> </td>
4386 </tr>
4387 </tbody>
4388 </table></div>
4389 </div>
4390 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4391 </div>
4392 <hr>
4393 <div class="refsect2">
4394 <a name="hb-font-set-synthetic-slant"></a><h3>hb_font_set_synthetic_slant ()</h3>
4395 <pre class="programlisting"><span class="returnvalue">void</span>
4396 hb_font_set_synthetic_slant (<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>,
4397                              <em class="parameter"><code><span class="type">float</span> slant</code></em>);</pre>
4398 <p>Sets the "synthetic slant" of a font.  By default is zero.
4399 Synthetic slant is the graphical skew that the renderer
4400 applies to the font at rendering time.</p>
4401 <p>HarfBuzz needs to know this value to adjust shaping results,
4402 metrics, and style values to match the slanted rendering.</p>
4403 <div class="note">Note: The slant value is a ratio.  For example, a
4404 20% slant would be represented as a 0.2 value.</div>
4405 <div class="refsect3">
4406 <a name="hb-font-set-synthetic-slant.parameters"></a><h4>Parameters</h4>
4407 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4408 <colgroup>
4409 <col width="150px" class="parameters_name">
4410 <col class="parameters_description">
4411 <col width="200px" class="parameters_annotations">
4412 </colgroup>
4413 <tbody>
4414 <tr>
4415 <td class="parameter_name"><p>font</p></td>
4416 <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>
4417 <td class="parameter_annotations"> </td>
4418 </tr>
4419 <tr>
4420 <td class="parameter_name"><p>slant</p></td>
4421 <td class="parameter_description"><p>synthetic slant value.</p></td>
4422 <td class="parameter_annotations"> </td>
4423 </tr>
4424 </tbody>
4425 </table></div>
4426 </div>
4427 <p class="since">Since: <a class="link" href="api-index-3-3-0.html#api-index-3.3.0">3.3.0</a></p>
4428 </div>
4429 <hr>
4430 <div class="refsect2">
4431 <a name="hb-font-set-user-data"></a><h3>hb_font_set_user_data ()</h3>
4432 <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>
4433 hb_font_set_user_data (<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>,
4434                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t" title="hb_user_data_key_t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>,
4435                        <em class="parameter"><code><span class="type">void</span> *data</code></em>,
4436                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>,
4437                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="type">hb_bool_t</span></a> replace</code></em>);</pre>
4438 <p>Attaches a user-data key/data pair to the specified font object.</p>
4439 <p><span class="annotation">[<acronym title="Exposed in C code, not necessarily available in other languages."><span class="acronym">skip</span></acronym>]</span></p>
4440 <div class="refsect3">
4441 <a name="hb-font-set-user-data.parameters"></a><h4>Parameters</h4>
4442 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4443 <colgroup>
4444 <col width="150px" class="parameters_name">
4445 <col class="parameters_description">
4446 <col width="200px" class="parameters_annotations">
4447 </colgroup>
4448 <tbody>
4449 <tr>
4450 <td class="parameter_name"><p>font</p></td>
4451 <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>
4452 <td class="parameter_annotations"> </td>
4453 </tr>
4454 <tr>
4455 <td class="parameter_name"><p>key</p></td>
4456 <td class="parameter_description"><p>The user-data key</p></td>
4457 <td class="parameter_annotations"> </td>
4458 </tr>
4459 <tr>
4460 <td class="parameter_name"><p>data</p></td>
4461 <td class="parameter_description"><p>A pointer to the user data</p></td>
4462 <td class="parameter_annotations"> </td>
4463 </tr>
4464 <tr>
4465 <td class="parameter_name"><p>destroy</p></td>
4466 <td class="parameter_description"><p>A callback to call when <em class="parameter"><code>data</code></em>
4467 is not needed anymore. </p></td>
4468 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
4469 </tr>
4470 <tr>
4471 <td class="parameter_name"><p>replace</p></td>
4472 <td class="parameter_description"><p>Whether to replace an existing data with the same key</p></td>
4473 <td class="parameter_annotations"> </td>
4474 </tr>
4475 </tbody>
4476 </table></div>
4477 </div>
4478 <div class="refsect3">
4479 <a name="hb-font-set-user-data.returns"></a><h4>Returns</h4>
4480 <p> <code class="literal">true</code> if success, <code class="literal">false</code> otherwise</p>
4481 </div>
4482 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4483 </div>
4484 <hr>
4485 <div class="refsect2">
4486 <a name="hb-font-set-variations"></a><h3>hb_font_set_variations ()</h3>
4487 <pre class="programlisting"><span class="returnvalue">void</span>
4488 hb_font_set_variations (<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>,
4489                         <em class="parameter"><code>const <a class="link" href="harfbuzz-hb-common.html#hb-variation-t" title="hb_variation_t"><span class="type">hb_variation_t</span></a> *variations</code></em>,
4490                         <em class="parameter"><code>unsigned <span class="type">int</span> variations_length</code></em>);</pre>
4491 <p>Applies a list of font-variation settings to a font.</p>
4492 <p>Note that this overrides all existing variations set on <em class="parameter"><code>font</code></em>
4493 .
4494 Axes not included in <em class="parameter"><code>variations</code></em>
4495  will be effectively set to their
4496 default values.</p>
4497 <div class="refsect3">
4498 <a name="hb-font-set-variations.parameters"></a><h4>Parameters</h4>
4499 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4500 <colgroup>
4501 <col width="150px" class="parameters_name">
4502 <col class="parameters_description">
4503 <col width="200px" class="parameters_annotations">
4504 </colgroup>
4505 <tbody>
4506 <tr>
4507 <td class="parameter_name"><p>font</p></td>
4508 <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>
4509 <td class="parameter_annotations"> </td>
4510 </tr>
4511 <tr>
4512 <td class="parameter_name"><p>variations</p></td>
4513 <td class="parameter_description"><p>Array of variation settings to apply. </p></td>
4514 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=variations_length]</span></td>
4515 </tr>
4516 <tr>
4517 <td class="parameter_name"><p>variations_length</p></td>
4518 <td class="parameter_description"><p>Number of variations to apply</p></td>
4519 <td class="parameter_annotations"> </td>
4520 </tr>
4521 </tbody>
4522 </table></div>
4523 </div>
4524 <p class="since">Since: <a class="link" href="api-index-1-4-2.html#api-index-1.4.2">1.4.2</a></p>
4525 </div>
4526 <hr>
4527 <div class="refsect2">
4528 <a name="hb-font-set-var-coords-design"></a><h3>hb_font_set_var_coords_design ()</h3>
4529 <pre class="programlisting"><span class="returnvalue">void</span>
4530 hb_font_set_var_coords_design (<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>,
4531                                <em class="parameter"><code>const <span class="type">float</span> *coords</code></em>,
4532                                <em class="parameter"><code>unsigned <span class="type">int</span> coords_length</code></em>);</pre>
4533 <p>Applies a list of variation coordinates (in design-space units)
4534 to a font.</p>
4535 <p>Note that this overrides all existing variations set on <em class="parameter"><code>font</code></em>
4536 .
4537 Axes not included in <em class="parameter"><code>coords</code></em>
4538  will be effectively set to their
4539 default values.</p>
4540 <div class="refsect3">
4541 <a name="hb-font-set-var-coords-design.parameters"></a><h4>Parameters</h4>
4542 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4543 <colgroup>
4544 <col width="150px" class="parameters_name">
4545 <col class="parameters_description">
4546 <col width="200px" class="parameters_annotations">
4547 </colgroup>
4548 <tbody>
4549 <tr>
4550 <td class="parameter_name"><p>font</p></td>
4551 <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>
4552 <td class="parameter_annotations"> </td>
4553 </tr>
4554 <tr>
4555 <td class="parameter_name"><p>coords</p></td>
4556 <td class="parameter_description"><p>Array of variation coordinates to apply. </p></td>
4557 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=coords_length]</span></td>
4558 </tr>
4559 <tr>
4560 <td class="parameter_name"><p>coords_length</p></td>
4561 <td class="parameter_description"><p>Number of coordinates to apply</p></td>
4562 <td class="parameter_annotations"> </td>
4563 </tr>
4564 </tbody>
4565 </table></div>
4566 </div>
4567 <p class="since">Since: <a class="link" href="api-index-1-4-2.html#api-index-1.4.2">1.4.2</a></p>
4568 </div>
4569 <hr>
4570 <div class="refsect2">
4571 <a name="hb-font-set-var-coords-normalized"></a><h3>hb_font_set_var_coords_normalized ()</h3>
4572 <pre class="programlisting"><span class="returnvalue">void</span>
4573 hb_font_set_var_coords_normalized (<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>,
4574                                    <em class="parameter"><code>const <span class="type">int</span> *coords</code></em>,
4575                                    <em class="parameter"><code>unsigned <span class="type">int</span> coords_length</code></em>);</pre>
4576 <p>Applies a list of variation coordinates (in normalized units)
4577 to a font.</p>
4578 <p>Note that this overrides all existing variations set on <em class="parameter"><code>font</code></em>
4579 .
4580 Axes not included in <em class="parameter"><code>coords</code></em>
4581  will be effectively set to their
4582 default values.</p>
4583 <div class="note">Note: Coordinates should be normalized to 2.14.</div>
4584 <div class="refsect3">
4585 <a name="hb-font-set-var-coords-normalized.parameters"></a><h4>Parameters</h4>
4586 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4587 <colgroup>
4588 <col width="150px" class="parameters_name">
4589 <col class="parameters_description">
4590 <col width="200px" class="parameters_annotations">
4591 </colgroup>
4592 <tbody>
4593 <tr>
4594 <td class="parameter_name"><p>font</p></td>
4595 <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>
4596 <td class="parameter_annotations"> </td>
4597 </tr>
4598 <tr>
4599 <td class="parameter_name"><p>coords</p></td>
4600 <td class="parameter_description"><p>Array of variation coordinates to apply. </p></td>
4601 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=coords_length]</span></td>
4602 </tr>
4603 <tr>
4604 <td class="parameter_name"><p>coords_length</p></td>
4605 <td class="parameter_description"><p>Number of coordinates to apply</p></td>
4606 <td class="parameter_annotations"> </td>
4607 </tr>
4608 </tbody>
4609 </table></div>
4610 </div>
4611 <p class="since">Since: <a class="link" href="api-index-1-4-2.html#api-index-1.4.2">1.4.2</a></p>
4612 </div>
4613 <hr>
4614 <div class="refsect2">
4615 <a name="hb-font-set-var-named-instance"></a><h3>hb_font_set_var_named_instance ()</h3>
4616 <pre class="programlisting"><span class="returnvalue">void</span>
4617 hb_font_set_var_named_instance (<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>,
4618                                 <em class="parameter"><code><span class="type">unsigned </span> instance_index</code></em>);</pre>
4619 <p>Sets design coords of a font from a named instance index.</p>
4620 <div class="refsect3">
4621 <a name="hb-font-set-var-named-instance.parameters"></a><h4>Parameters</h4>
4622 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4623 <colgroup>
4624 <col width="150px" class="parameters_name">
4625 <col class="parameters_description">
4626 <col width="200px" class="parameters_annotations">
4627 </colgroup>
4628 <tbody>
4629 <tr>
4630 <td class="parameter_name"><p>font</p></td>
4631 <td class="parameter_description"><p>a font.</p></td>
4632 <td class="parameter_annotations"> </td>
4633 </tr>
4634 <tr>
4635 <td class="parameter_name"><p>instance_index</p></td>
4636 <td class="parameter_description"><p>named instance index.</p></td>
4637 <td class="parameter_annotations"> </td>
4638 </tr>
4639 </tbody>
4640 </table></div>
4641 </div>
4642 <p class="since">Since: <a class="link" href="api-index-2-6-0.html#api-index-2.6.0">2.6.0</a></p>
4643 </div>
4644 <hr>
4645 <div class="refsect2">
4646 <a name="hb-font-subtract-glyph-origin-for-direction"></a><h3>hb_font_subtract_glyph_origin_for_direction ()</h3>
4647 <pre class="programlisting"><span class="returnvalue">void</span>
4648 hb_font_subtract_glyph_origin_for_direction
4649                                (<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>,
4650                                 <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>,
4651                                 <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>,
4652                                 <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> *x</code></em>,
4653                                 <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> *y</code></em>);</pre>
4654 <p>Subtracts the origin coordinates from an (X,Y) point coordinate,
4655 in the specified glyph ID in the specified font.</p>
4656 <p>Calls the appropriate direction-specific variant (horizontal
4657 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
4658 .</p>
4659 <div class="refsect3">
4660 <a name="hb-font-subtract-glyph-origin-for-direction.parameters"></a><h4>Parameters</h4>
4661 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4662 <colgroup>
4663 <col width="150px" class="parameters_name">
4664 <col class="parameters_description">
4665 <col width="200px" class="parameters_annotations">
4666 </colgroup>
4667 <tbody>
4668 <tr>
4669 <td class="parameter_name"><p>font</p></td>
4670 <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>
4671 <td class="parameter_annotations"> </td>
4672 </tr>
4673 <tr>
4674 <td class="parameter_name"><p>glyph</p></td>
4675 <td class="parameter_description"><p>The glyph ID to query</p></td>
4676 <td class="parameter_annotations"> </td>
4677 </tr>
4678 <tr>
4679 <td class="parameter_name"><p>direction</p></td>
4680 <td class="parameter_description"><p>The direction of the text segment</p></td>
4681 <td class="parameter_annotations"> </td>
4682 </tr>
4683 <tr>
4684 <td class="parameter_name"><p>x</p></td>
4685 <td class="parameter_description"><p>Input = The original X coordinate
4686 Output = The X coordinate minus the X-coordinate of the origin. </p></td>
4687 <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>
4688 </tr>
4689 <tr>
4690 <td class="parameter_name"><p>y</p></td>
4691 <td class="parameter_description"><p>Input = The original Y coordinate
4692 Output = The Y coordinate minus the Y-coordinate of the origin. </p></td>
4693 <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>
4694 </tr>
4695 </tbody>
4696 </table></div>
4697 </div>
4698 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4699 </div>
4700 <hr>
4701 <div class="refsect2">
4702 <a name="hb-reference-table-func-t"></a><h3>hb_reference_table_func_t ()</h3>
4703 <pre class="programlisting"><a class="link" href="harfbuzz-hb-blob.html#hb-blob-t" title="hb_blob_t"><span class="returnvalue">hb_blob_t</span></a> *
4704 <span class="c_punctuation">(</span>*hb_reference_table_func_t<span class="c_punctuation">)</span> (<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>,
4705                               <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-tag-t" title="hb_tag_t"><span class="type">hb_tag_t</span></a> tag</code></em>,
4706                               <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
4707 <p>Callback function for <a class="link" href="harfbuzz-hb-face.html#hb-face-create-for-tables" title="hb_face_create_for_tables ()"><code class="function">hb_face_create_for_tables()</code></a>.</p>
4708 <div class="refsect3">
4709 <a name="hb-reference-table-func-t.parameters"></a><h4>Parameters</h4>
4710 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4711 <colgroup>
4712 <col width="150px" class="parameters_name">
4713 <col class="parameters_description">
4714 <col width="200px" class="parameters_annotations">
4715 </colgroup>
4716 <tbody>
4717 <tr>
4718 <td class="parameter_name"><p>face</p></td>
4719 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-face.html#hb-face-t" title="hb_face_t"><span class="type">hb_face_t</span></a> to reference table for</p></td>
4720 <td class="parameter_annotations"> </td>
4721 </tr>
4722 <tr>
4723 <td class="parameter_name"><p>tag</p></td>
4724 <td class="parameter_description"><p>the tag of the table to reference</p></td>
4725 <td class="parameter_annotations"> </td>
4726 </tr>
4727 <tr>
4728 <td class="parameter_name"><p>user_data</p></td>
4729 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
4730 <td class="parameter_annotations"> </td>
4731 </tr>
4732 </tbody>
4733 </table></div>
4734 </div>
4735 <div class="refsect3">
4736 <a name="hb-reference-table-func-t.returns"></a><h4>Returns</h4>
4737 <p>A pointer to the <em class="parameter"><code>tag</code></em>
4738 table within <em class="parameter"><code>face</code></em>
4739 . </p>
4740 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
4741 </div>
4742 <p class="since">Since: <a class="link" href="api-index-0-9-2.html#api-index-0.9.2">0.9.2</a></p>
4743 </div>
4744 <hr>
4745 <div class="refsect2">
4746 <a name="hb-font-funcs-set-font-h-extents-func"></a><h3>hb_font_funcs_set_font_h_extents_func ()</h3>
4747 <pre class="programlisting"><span class="returnvalue">void</span>
4748 hb_font_funcs_set_font_h_extents_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
4749                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-h-extents-func-t" title="hb_font_get_font_h_extents_func_t"><span class="type">hb_font_get_font_h_extents_func_t</span></a> func</code></em>,
4750                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
4751                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
4752 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-h-extents-func-t" title="hb_font_get_font_h_extents_func_t"><span class="type">hb_font_get_font_h_extents_func_t</span></a>.</p>
4753 <div class="refsect3">
4754 <a name="hb-font-funcs-set-font-h-extents-func.parameters"></a><h4>Parameters</h4>
4755 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4756 <colgroup>
4757 <col width="150px" class="parameters_name">
4758 <col class="parameters_description">
4759 <col width="200px" class="parameters_annotations">
4760 </colgroup>
4761 <tbody>
4762 <tr>
4763 <td class="parameter_name"><p>ffuncs</p></td>
4764 <td class="parameter_description"><p>A font-function structure</p></td>
4765 <td class="parameter_annotations"> </td>
4766 </tr>
4767 <tr>
4768 <td class="parameter_name"><p>func</p></td>
4769 <td class="parameter_description"><p>The callback function to assign. </p></td>
4770 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
4771 </tr>
4772 <tr>
4773 <td class="parameter_name"><p>user_data</p></td>
4774 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
4775 </p></td>
4776 <td class="parameter_annotations"> </td>
4777 </tr>
4778 <tr>
4779 <td class="parameter_name"><p>destroy</p></td>
4780 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
4781 is not needed anymore. </p></td>
4782 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
4783 </tr>
4784 </tbody>
4785 </table></div>
4786 </div>
4787 <p class="since">Since: <a class="link" href="api-index-1-1-2.html#api-index-1.1.2">1.1.2</a></p>
4788 </div>
4789 <hr>
4790 <div class="refsect2">
4791 <a name="hb-font-funcs-set-font-v-extents-func"></a><h3>hb_font_funcs_set_font_v_extents_func ()</h3>
4792 <pre class="programlisting"><span class="returnvalue">void</span>
4793 hb_font_funcs_set_font_v_extents_func (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> *ffuncs</code></em>,
4794                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-v-extents-func-t" title="hb_font_get_font_v_extents_func_t"><span class="type">hb_font_get_font_v_extents_func_t</span></a> func</code></em>,
4795                                        <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
4796                                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-destroy-func-t" title="hb_destroy_func_t ()"><span class="type">hb_destroy_func_t</span></a> destroy</code></em>);</pre>
4797 <p>Sets the implementation function for <a class="link" href="harfbuzz-hb-font.html#hb-font-get-font-v-extents-func-t" title="hb_font_get_font_v_extents_func_t"><span class="type">hb_font_get_font_v_extents_func_t</span></a>.</p>
4798 <div class="refsect3">
4799 <a name="hb-font-funcs-set-font-v-extents-func.parameters"></a><h4>Parameters</h4>
4800 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4801 <colgroup>
4802 <col width="150px" class="parameters_name">
4803 <col class="parameters_description">
4804 <col width="200px" class="parameters_annotations">
4805 </colgroup>
4806 <tbody>
4807 <tr>
4808 <td class="parameter_name"><p>ffuncs</p></td>
4809 <td class="parameter_description"><p>A font-function structure</p></td>
4810 <td class="parameter_annotations"> </td>
4811 </tr>
4812 <tr>
4813 <td class="parameter_name"><p>func</p></td>
4814 <td class="parameter_description"><p>The callback function to assign. </p></td>
4815 <td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym> user_data][<acronym title="This parameter is a 'destroy_data', for callbacks."><span class="acronym">destroy</span></acronym> destroy][<acronym title="The callback is valid until the GDestroyNotify argument is called."><span class="acronym">scope notified</span></acronym>]</span></td>
4816 </tr>
4817 <tr>
4818 <td class="parameter_name"><p>user_data</p></td>
4819 <td class="parameter_description"><p>Data to pass to <em class="parameter"><code>func</code></em>
4820 </p></td>
4821 <td class="parameter_annotations"> </td>
4822 </tr>
4823 <tr>
4824 <td class="parameter_name"><p>destroy</p></td>
4825 <td class="parameter_description"><p>The function to call when <em class="parameter"><code>user_data</code></em>
4826 is not needed anymore. </p></td>
4827 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></td>
4828 </tr>
4829 </tbody>
4830 </table></div>
4831 </div>
4832 <p class="since">Since: <a class="link" href="api-index-1-1-2.html#api-index-1.1.2">1.1.2</a></p>
4833 </div>
4834 <hr>
4835 <div class="refsect2">
4836 <a name="hb-font-get-extents-for-direction"></a><h3>hb_font_get_extents_for_direction ()</h3>
4837 <pre class="programlisting"><span class="returnvalue">void</span>
4838 hb_font_get_extents_for_direction (<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>,
4839                                    <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>,
4840                                    <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>);</pre>
4841 <p>Fetches the extents for a font in a text segment of the
4842 specified direction.</p>
4843 <p>Calls the appropriate direction-specific variant (horizontal
4844 or vertical) depending on the value of <em class="parameter"><code>direction</code></em>
4845 .</p>
4846 <div class="refsect3">
4847 <a name="hb-font-get-extents-for-direction.parameters"></a><h4>Parameters</h4>
4848 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4849 <colgroup>
4850 <col width="150px" class="parameters_name">
4851 <col class="parameters_description">
4852 <col width="200px" class="parameters_annotations">
4853 </colgroup>
4854 <tbody>
4855 <tr>
4856 <td class="parameter_name"><p>font</p></td>
4857 <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>
4858 <td class="parameter_annotations"> </td>
4859 </tr>
4860 <tr>
4861 <td class="parameter_name"><p>direction</p></td>
4862 <td class="parameter_description"><p>The direction of the text segment</p></td>
4863 <td class="parameter_annotations"> </td>
4864 </tr>
4865 <tr>
4866 <td class="parameter_name"><p>extents</p></td>
4867 <td class="parameter_description"><p>The <a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> retrieved. </p></td>
4868 <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>
4869 </tr>
4870 </tbody>
4871 </table></div>
4872 </div>
4873 <p class="since">Since: <a class="link" href="api-index-1-1-3.html#api-index-1.1.3">1.1.3</a></p>
4874 </div>
4875 <hr>
4876 <div class="refsect2">
4877 <a name="hb-font-get-font-extents-func-t"></a><h3>hb_font_get_font_extents_func_t ()</h3>
4878 <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>
4879 <span class="c_punctuation">(</span>*hb_font_get_font_extents_func_t<span class="c_punctuation">)</span> (<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>,
4880                                     <em class="parameter"><code><span class="type">void</span> *font_data</code></em>,
4881                                     <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>,
4882                                     <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
4883 <p>This method should retrieve the extents for a font.</p>
4884 <div class="refsect3">
4885 <a name="hb-font-get-font-extents-func-t.parameters"></a><h4>Parameters</h4>
4886 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4887 <colgroup>
4888 <col width="150px" class="parameters_name">
4889 <col class="parameters_description">
4890 <col width="200px" class="parameters_annotations">
4891 </colgroup>
4892 <tbody>
4893 <tr>
4894 <td class="parameter_name"><p>font</p></td>
4895 <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>
4896 <td class="parameter_annotations"> </td>
4897 </tr>
4898 <tr>
4899 <td class="parameter_name"><p>font_data</p></td>
4900 <td class="parameter_description"><p><em class="parameter"><code>font</code></em>
4901 user data pointer</p></td>
4902 <td class="parameter_annotations"> </td>
4903 </tr>
4904 <tr>
4905 <td class="parameter_name"><p>extents</p></td>
4906 <td class="parameter_description"><p>The font extents retrieved. </p></td>
4907 <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>
4908 </tr>
4909 <tr>
4910 <td class="parameter_name"><p>user_data</p></td>
4911 <td class="parameter_description"><p>User data pointer passed by the caller</p></td>
4912 <td class="parameter_annotations"> </td>
4913 </tr>
4914 </tbody>
4915 </table></div>
4916 </div>
4917 </div>
4918 <hr>
4919 <div class="refsect2">
4920 <a name="hb-font-get-h-extents"></a><h3>hb_font_get_h_extents ()</h3>
4921 <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>
4922 hb_font_get_h_extents (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
4923                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>);</pre>
4924 <p>Fetches the extents for a specified font, for horizontal
4925 text segments.</p>
4926 <div class="refsect3">
4927 <a name="hb-font-get-h-extents.parameters"></a><h4>Parameters</h4>
4928 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4929 <colgroup>
4930 <col width="150px" class="parameters_name">
4931 <col class="parameters_description">
4932 <col width="200px" class="parameters_annotations">
4933 </colgroup>
4934 <tbody>
4935 <tr>
4936 <td class="parameter_name"><p>font</p></td>
4937 <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>
4938 <td class="parameter_annotations"> </td>
4939 </tr>
4940 <tr>
4941 <td class="parameter_name"><p>extents</p></td>
4942 <td class="parameter_description"><p>The font extents retrieved. </p></td>
4943 <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>
4944 </tr>
4945 </tbody>
4946 </table></div>
4947 </div>
4948 <div class="refsect3">
4949 <a name="hb-font-get-h-extents.returns"></a><h4>Returns</h4>
4950 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
4951 </div>
4952 <p class="since">Since: <a class="link" href="api-index-1-1-3.html#api-index-1.1.3">1.1.3</a></p>
4953 </div>
4954 <hr>
4955 <div class="refsect2">
4956 <a name="hb-font-get-v-extents"></a><h3>hb_font_get_v_extents ()</h3>
4957 <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>
4958 hb_font_get_v_extents (<em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> *font</code></em>,
4959                        <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-extents-t" title="hb_font_extents_t"><span class="type">hb_font_extents_t</span></a> *extents</code></em>);</pre>
4960 <p>Fetches the extents for a specified font, for vertical
4961 text segments.</p>
4962 <div class="refsect3">
4963 <a name="hb-font-get-v-extents.parameters"></a><h4>Parameters</h4>
4964 <div class="informaltable"><table class="informaltable" width="100%" border="0">
4965 <colgroup>
4966 <col width="150px" class="parameters_name">
4967 <col class="parameters_description">
4968 <col width="200px" class="parameters_annotations">
4969 </colgroup>
4970 <tbody>
4971 <tr>
4972 <td class="parameter_name"><p>font</p></td>
4973 <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>
4974 <td class="parameter_annotations"> </td>
4975 </tr>
4976 <tr>
4977 <td class="parameter_name"><p>extents</p></td>
4978 <td class="parameter_description"><p>The font extents retrieved. </p></td>
4979 <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>
4980 </tr>
4981 </tbody>
4982 </table></div>
4983 </div>
4984 <div class="refsect3">
4985 <a name="hb-font-get-v-extents.returns"></a><h4>Returns</h4>
4986 <p> <code class="literal">true</code> if data found, <code class="literal">false</code> otherwise</p>
4987 </div>
4988 <p class="since">Since: <a class="link" href="api-index-1-1-3.html#api-index-1.1.3">1.1.3</a></p>
4989 </div>
4990 </div>
4991 <div class="refsect1">
4992 <a name="harfbuzz-hb-font.other_details"></a><h2>Types and Values</h2>
4993 <div class="refsect2">
4994 <a name="hb-font-funcs-t"></a><h3>hb_font_funcs_t</h3>
4995 <pre class="programlisting">typedef struct hb_font_funcs_t hb_font_funcs_t;
4996 </pre>
4997 <p>Data type containing a set of virtual methods used for
4998 working on <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> font objects.</p>
4999 <p>HarfBuzz provides a lightweight default function for each of
5000
5001 the methods in <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a>. Client programs can implement
5002 their own replacements for the individual font functions, as
5003 needed, and replace the default by calling the setter for a
5004 method.</p>
5005 </div>
5006 <hr>
5007 <div class="refsect2">
5008 <a name="hb-font-get-glyph-h-advance-func-t"></a><h3>hb_font_get_glyph_h_advance_func_t</h3>
5009 <pre class="programlisting">typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_h_advance_func_t;
5010 </pre>
5011 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5012 <p>This method should retrieve the advance for a specified glyph, in
5013 horizontal-direction text segments. Advances must be returned in
5014 an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> output parameter.</p>
5015 </div>
5016 <hr>
5017 <div class="refsect2">
5018 <a name="hb-font-get-glyph-h-advances-func-t"></a><h3>hb_font_get_glyph_h_advances_func_t</h3>
5019 <pre class="programlisting">typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_h_advances_func_t;
5020 </pre>
5021 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5022 <p>This method should retrieve the advances for a sequence of glyphs, in
5023 horizontal-direction text segments.</p>
5024 </div>
5025 <hr>
5026 <div class="refsect2">
5027 <a name="hb-font-get-glyph-h-kerning-func-t"></a><h3>hb_font_get_glyph_h_kerning_func_t</h3>
5028 <pre class="programlisting">typedef hb_font_get_glyph_kerning_func_t hb_font_get_glyph_h_kerning_func_t;
5029 </pre>
5030 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5031 <p>This method should retrieve the kerning-adjustment value for a glyph-pair in
5032 the specified font, for horizontal text segments.</p>
5033 </div>
5034 <hr>
5035 <div class="refsect2">
5036 <a name="hb-font-get-glyph-h-origin-func-t"></a><h3>hb_font_get_glyph_h_origin_func_t</h3>
5037 <pre class="programlisting">typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_h_origin_func_t;
5038 </pre>
5039 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5040 <p>This method should retrieve the (X,Y) coordinates (in font units) of the
5041 origin for a glyph, for horizontal-direction text segments. Each
5042 coordinate must be returned in an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> output parameter.</p>
5043 </div>
5044 <hr>
5045 <div class="refsect2">
5046 <a name="hb-font-get-glyph-v-advance-func-t"></a><h3>hb_font_get_glyph_v_advance_func_t</h3>
5047 <pre class="programlisting">typedef hb_font_get_glyph_advance_func_t hb_font_get_glyph_v_advance_func_t;
5048 </pre>
5049 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5050 <p>This method should retrieve the advance for a specified glyph, in
5051 vertical-direction text segments. Advances must be returned in
5052 an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> output parameter.</p>
5053 </div>
5054 <hr>
5055 <div class="refsect2">
5056 <a name="hb-font-get-glyph-v-advances-func-t"></a><h3>hb_font_get_glyph_v_advances_func_t</h3>
5057 <pre class="programlisting">typedef hb_font_get_glyph_advances_func_t hb_font_get_glyph_v_advances_func_t;
5058 </pre>
5059 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5060 <p>This method should retrieve the advances for a sequence of glyphs, in
5061 vertical-direction text segments.</p>
5062 </div>
5063 <hr>
5064 <div class="refsect2">
5065 <a name="hb-font-get-glyph-v-origin-func-t"></a><h3>hb_font_get_glyph_v_origin_func_t</h3>
5066 <pre class="programlisting">typedef hb_font_get_glyph_origin_func_t hb_font_get_glyph_v_origin_func_t;
5067 </pre>
5068 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5069 <p>This method should retrieve the (X,Y) coordinates (in font units) of the
5070 origin for a glyph, for vertical-direction text segments. Each coordinate
5071 must be returned in an <a class="link" href="harfbuzz-hb-common.html#hb-position-t" title="hb_position_t"><span class="type">hb_position_t</span></a> output parameter.</p>
5072 </div>
5073 <hr>
5074 <div class="refsect2">
5075 <a name="hb-font-t"></a><h3>hb_font_t</h3>
5076 <pre class="programlisting">typedef struct hb_font_t hb_font_t;
5077 </pre>
5078 <p>Data type for holding fonts.</p>
5079 </div>
5080 <hr>
5081 <div class="refsect2">
5082 <a name="hb-font-get-font-h-extents-func-t"></a><h3>hb_font_get_font_h_extents_func_t</h3>
5083 <pre class="programlisting">typedef hb_font_get_font_extents_func_t hb_font_get_font_h_extents_func_t;
5084 </pre>
5085 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5086 <p>This method should retrieve the extents for a font, for horizontal-direction
5087 text segments. Extents must be returned in an <span class="type">hb_glyph_extents</span> output
5088 parameter.</p>
5089 </div>
5090 <hr>
5091 <div class="refsect2">
5092 <a name="hb-font-get-font-v-extents-func-t"></a><h3>hb_font_get_font_v_extents_func_t</h3>
5093 <pre class="programlisting">typedef hb_font_get_font_extents_func_t hb_font_get_font_v_extents_func_t;
5094 </pre>
5095 <p>A virtual method for the <a class="link" href="harfbuzz-hb-font.html#hb-font-funcs-t" title="hb_font_funcs_t"><span class="type">hb_font_funcs_t</span></a> of an <a class="link" href="harfbuzz-hb-font.html#hb-font-t" title="hb_font_t"><span class="type">hb_font_t</span></a> object.</p>
5096 <p>This method should retrieve the extents for a font, for vertical-direction
5097 text segments. Extents must be returned in an <span class="type">hb_glyph_extents</span> output
5098 parameter.</p>
5099 </div>
5100 <hr>
5101 <div class="refsect2">
5102 <a name="hb-font-extents-t"></a><h3>hb_font_extents_t</h3>
5103 <pre class="programlisting">typedef struct {
5104   hb_position_t ascender;
5105   hb_position_t descender;
5106   hb_position_t line_gap;
5107 } hb_font_extents_t;
5108 </pre>
5109 <p>Font-wide extent values, measured in font units.</p>
5110 <p>Note that typically <em class="parameter"><code>ascender</code></em>
5111  is positive and <em class="parameter"><code>descender</code></em>
5112
5113 negative, in coordinate systems that grow up.</p>
5114 <div class="refsect3">
5115 <a name="hb-font-extents-t.members"></a><h4>Members</h4>
5116 <div class="informaltable"><table class="informaltable" width="100%" border="0">
5117 <colgroup>
5118 <col width="300px" class="struct_members_name">
5119 <col class="struct_members_description">
5120 <col width="200px" class="struct_members_annotations">
5121 </colgroup>
5122 <tbody>
5123 <tr>
5124 <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-font-extents-t.ascender"></a>ascender</code></em>;</p></td>
5125 <td class="struct_member_description"><p>The height of typographic ascenders.</p></td>
5126 <td class="struct_member_annotations"> </td>
5127 </tr>
5128 <tr>
5129 <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-font-extents-t.descender"></a>descender</code></em>;</p></td>
5130 <td class="struct_member_description"><p>The depth of typographic descenders.</p></td>
5131 <td class="struct_member_annotations"> </td>
5132 </tr>
5133 <tr>
5134 <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-font-extents-t.line-gap"></a>line_gap</code></em>;</p></td>
5135 <td class="struct_member_description"><p>The suggested line-spacing gap.</p></td>
5136 <td class="struct_member_annotations"> </td>
5137 </tr>
5138 </tbody>
5139 </table></div>
5140 </div>
5141 </div>
5142 <hr>
5143 <div class="refsect2">
5144 <a name="hb-glyph-extents-t"></a><h3>hb_glyph_extents_t</h3>
5145 <pre class="programlisting">typedef struct {
5146   hb_position_t x_bearing;
5147   hb_position_t y_bearing;
5148   hb_position_t width;
5149   hb_position_t height;
5150 } hb_glyph_extents_t;
5151 </pre>
5152 <p>Glyph extent values, measured in font units.</p>
5153 <p>Note that <em class="parameter"><code>height</code></em>
5154  is negative, in coordinate systems that grow up.</p>
5155 <div class="refsect3">
5156 <a name="hb-glyph-extents-t.members"></a><h4>Members</h4>
5157 <div class="informaltable"><table class="informaltable" width="100%" border="0">
5158 <colgroup>
5159 <col width="300px" class="struct_members_name">
5160 <col class="struct_members_description">
5161 <col width="200px" class="struct_members_annotations">
5162 </colgroup>
5163 <tbody>
5164 <tr>
5165 <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-glyph-extents-t.x-bearing"></a>x_bearing</code></em>;</p></td>
5166 <td class="struct_member_description"><p>Distance from the x-origin to the left extremum of the glyph.</p></td>
5167 <td class="struct_member_annotations"> </td>
5168 </tr>
5169 <tr>
5170 <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-glyph-extents-t.y-bearing"></a>y_bearing</code></em>;</p></td>
5171 <td class="struct_member_description"><p>Distance from the top extremum of the glyph to the y-origin.</p></td>
5172 <td class="struct_member_annotations"> </td>
5173 </tr>
5174 <tr>
5175 <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-glyph-extents-t.width"></a>width</code></em>;</p></td>
5176 <td class="struct_member_description"><p>Distance from the left extremum of the glyph to the right extremum.</p></td>
5177 <td class="struct_member_annotations"> </td>
5178 </tr>
5179 <tr>
5180 <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-glyph-extents-t.height"></a>height</code></em>;</p></td>
5181 <td class="struct_member_description"><p>Distance from the top extremum of the glyph to the bottom extremum.</p></td>
5182 <td class="struct_member_annotations"> </td>
5183 </tr>
5184 </tbody>
5185 </table></div>
5186 </div>
5187 </div>
5188 </div>
5189 </div>
5190 <div class="footer">
5191 <hr>Generated by GTK-Doc V1.32</div>
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