docs/html/harfbuzz-Buffers.html

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   5 <title>HarfBuzz Manual: Buffers</title>
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  17 <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
  18                   <a href="#harfbuzz-Buffers.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
  19                   <a href="#harfbuzz-Buffers.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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  26 <div class="refentry">
  27 <a name="harfbuzz-Buffers"></a><div class="titlepage"></div>
  28 <div class="refnamediv"><table width="100%"><tr>
  29 <td valign="top">
  30 <h2><span class="refentrytitle"><a name="harfbuzz-Buffers.top_of_page"></a>Buffers</span></h2>
  31 <p>Buffers — Input and output buffers</p>
  32 </td>
  33 <td class="gallery_image" valign="top" align="right"></td>
  34 </tr></table></div>
  35 <div class="refsect1">
  36 <a name="harfbuzz-Buffers.functions"></a><h2>Functions</h2>
  37 <div class="informaltable"><table width="100%" border="0">
  38 <colgroup>
  39 <col width="150px" class="functions_return">
  40 <col class="functions_name">
  41 </colgroup>
  42 <tbody>
  43 <tr>
  44 <td class="function_type">
  45 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
  46 </td>
  47 <td class="function_name">
  48 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-create" title="hb_buffer_create ()">hb_buffer_create</a> <span class="c_punctuation">()</span>
  49 </td>
  50 </tr>
  51 <tr>
  52 <td class="function_type">
  53 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
  54 </td>
  55 <td class="function_name">
  56 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reference" title="hb_buffer_reference ()">hb_buffer_reference</a> <span class="c_punctuation">()</span>
  57 </td>
  58 </tr>
  59 <tr>
  60 <td class="function_type">
  61 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
  62 </td>
  63 <td class="function_name">
  64 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-empty" title="hb_buffer_get_empty ()">hb_buffer_get_empty</a> <span class="c_punctuation">()</span>
  65 </td>
  66 </tr>
  67 <tr>
  68 <td class="function_type">
  69 <span class="returnvalue">void</span>
  70 </td>
  71 <td class="function_name">
  72 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-destroy" title="hb_buffer_destroy ()">hb_buffer_destroy</a> <span class="c_punctuation">()</span>
  73 </td>
  74 </tr>
  75 <tr>
  76 <td class="function_type">
  77 <span class="returnvalue">void</span>
  78 </td>
  79 <td class="function_name">
  80 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reset" title="hb_buffer_reset ()">hb_buffer_reset</a> <span class="c_punctuation">()</span>
  81 </td>
  82 </tr>
  83 <tr>
  84 <td class="function_type">
  85 <span class="returnvalue">void</span>
  86 </td>
  87 <td class="function_name">
  88 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-clear-contents" title="hb_buffer_clear_contents ()">hb_buffer_clear_contents</a> <span class="c_punctuation">()</span>
  89 </td>
  90 </tr>
  91 <tr>
  92 <td class="function_type">
  93 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
  94 </td>
  95 <td class="function_name">
  96 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-pre-allocate" title="hb_buffer_pre_allocate ()">hb_buffer_pre_allocate</a> <span class="c_punctuation">()</span>
  97 </td>
  98 </tr>
  99 <tr>
 100 <td class="function_type">
 101 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 102 </td>
 103 <td class="function_name">
 104 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-allocation-successful" title="hb_buffer_allocation_successful ()">hb_buffer_allocation_successful</a> <span class="c_punctuation">()</span>
 105 </td>
 106 </tr>
 107 <tr>
 108 <td class="function_type">
 109 <span class="returnvalue">void</span>
 110 </td>
 111 <td class="function_name">
 112 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add" title="hb_buffer_add ()">hb_buffer_add</a> <span class="c_punctuation">()</span>
 113 </td>
 114 </tr>
 115 <tr>
 116 <td class="function_type">
 117 <span class="returnvalue">void</span>
 118 </td>
 119 <td class="function_name">
 120 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-codepoints" title="hb_buffer_add_codepoints ()">hb_buffer_add_codepoints</a> <span class="c_punctuation">()</span>
 121 </td>
 122 </tr>
 123 <tr>
 124 <td class="function_type">
 125 <span class="returnvalue">void</span>
 126 </td>
 127 <td class="function_name">
 128 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-utf32" title="hb_buffer_add_utf32 ()">hb_buffer_add_utf32</a> <span class="c_punctuation">()</span>
 129 </td>
 130 </tr>
 131 <tr>
 132 <td class="function_type">
 133 <span class="returnvalue">void</span>
 134 </td>
 135 <td class="function_name">
 136 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-utf16" title="hb_buffer_add_utf16 ()">hb_buffer_add_utf16</a> <span class="c_punctuation">()</span>
 137 </td>
 138 </tr>
 139 <tr>
 140 <td class="function_type">
 141 <span class="returnvalue">void</span>
 142 </td>
 143 <td class="function_name">
 144 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-utf8" title="hb_buffer_add_utf8 ()">hb_buffer_add_utf8</a> <span class="c_punctuation">()</span>
 145 </td>
 146 </tr>
 147 <tr>
 148 <td class="function_type">
 149 <span class="returnvalue">void</span>
 150 </td>
 151 <td class="function_name">
 152 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-latin1" title="hb_buffer_add_latin1 ()">hb_buffer_add_latin1</a> <span class="c_punctuation">()</span>
 153 </td>
 154 </tr>
 155 <tr>
 156 <td class="function_type">
 157 <span class="returnvalue">void</span>
 158 </td>
 159 <td class="function_name">
 160 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-content-type" title="hb_buffer_set_content_type ()">hb_buffer_set_content_type</a> <span class="c_punctuation">()</span>
 161 </td>
 162 </tr>
 163 <tr>
 164 <td class="function_type">
 165 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-content-type-t" title="enum hb_buffer_content_type_t"><span class="returnvalue">hb_buffer_content_type_t</span></a>
 166 </td>
 167 <td class="function_name">
 168 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-content-type" title="hb_buffer_get_content_type ()">hb_buffer_get_content_type</a> <span class="c_punctuation">()</span>
 169 </td>
 170 </tr>
 171 <tr>
 172 <td class="function_type">
 173 <span class="returnvalue">void</span>
 174 </td>
 175 <td class="function_name">
 176 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-direction" title="hb_buffer_set_direction ()">hb_buffer_set_direction</a> <span class="c_punctuation">()</span>
 177 </td>
 178 </tr>
 179 <tr>
 180 <td class="function_type">
 181 <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
 182 </td>
 183 <td class="function_name">
 184 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-direction" title="hb_buffer_get_direction ()">hb_buffer_get_direction</a> <span class="c_punctuation">()</span>
 185 </td>
 186 </tr>
 187 <tr>
 188 <td class="function_type">
 189 <span class="returnvalue">void</span>
 190 </td>
 191 <td class="function_name">
 192 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-script" title="hb_buffer_set_script ()">hb_buffer_set_script</a> <span class="c_punctuation">()</span>
 193 </td>
 194 </tr>
 195 <tr>
 196 <td class="function_type">
 197 <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
 198 </td>
 199 <td class="function_name">
 200 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-script" title="hb_buffer_get_script ()">hb_buffer_get_script</a> <span class="c_punctuation">()</span>
 201 </td>
 202 </tr>
 203 <tr>
 204 <td class="function_type">
 205 <span class="returnvalue">void</span>
 206 </td>
 207 <td class="function_name">
 208 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-language" title="hb_buffer_set_language ()">hb_buffer_set_language</a> <span class="c_punctuation">()</span>
 209 </td>
 210 </tr>
 211 <tr>
 212 <td class="function_type">
 213 <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
 214 </td>
 215 <td class="function_name">
 216 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-language" title="hb_buffer_get_language ()">hb_buffer_get_language</a> <span class="c_punctuation">()</span>
 217 </td>
 218 </tr>
 219 <tr>
 220 <td class="function_type">
 221 <span class="returnvalue">void</span>
 222 </td>
 223 <td class="function_name">
 224 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-flags" title="hb_buffer_set_flags ()">hb_buffer_set_flags</a> <span class="c_punctuation">()</span>
 225 </td>
 226 </tr>
 227 <tr>
 228 <td class="function_type">
 229 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-flags-t" title="enum hb_buffer_flags_t"><span class="returnvalue">hb_buffer_flags_t</span></a>
 230 </td>
 231 <td class="function_name">
 232 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-flags" title="hb_buffer_get_flags ()">hb_buffer_get_flags</a> <span class="c_punctuation">()</span>
 233 </td>
 234 </tr>
 235 <tr>
 236 <td class="function_type">
 237 <span class="returnvalue">void</span>
 238 </td>
 239 <td class="function_name">
 240 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-cluster-level" title="hb_buffer_set_cluster_level ()">hb_buffer_set_cluster_level</a> <span class="c_punctuation">()</span>
 241 </td>
 242 </tr>
 243 <tr>
 244 <td class="function_type">
 245 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-cluster-level-t" title="enum hb_buffer_cluster_level_t"><span class="returnvalue">hb_buffer_cluster_level_t</span></a>
 246 </td>
 247 <td class="function_name">
 248 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-cluster-level" title="hb_buffer_get_cluster_level ()">hb_buffer_get_cluster_level</a> <span class="c_punctuation">()</span>
 249 </td>
 250 </tr>
 251 <tr>
 252 <td class="function_type">
 253 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 254 </td>
 255 <td class="function_name">
 256 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-length" title="hb_buffer_set_length ()">hb_buffer_set_length</a> <span class="c_punctuation">()</span>
 257 </td>
 258 </tr>
 259 <tr>
 260 <td class="function_type">unsigned <span class="returnvalue">int</span>
 261 </td>
 262 <td class="function_name">
 263 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-length" title="hb_buffer_get_length ()">hb_buffer_get_length</a> <span class="c_punctuation">()</span>
 264 </td>
 265 </tr>
 266 <tr>
 267 <td class="function_type">
 268 <span class="returnvalue">void</span>
 269 </td>
 270 <td class="function_name">
 271 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-segment-properties" title="hb_buffer_set_segment_properties ()">hb_buffer_set_segment_properties</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-Buffers.html#hb-buffer-get-segment-properties" title="hb_buffer_get_segment_properties ()">hb_buffer_get_segment_properties</a> <span class="c_punctuation">()</span>
 280 </td>
 281 </tr>
 282 <tr>
 283 <td class="function_type">
 284 <span class="returnvalue">void</span>
 285 </td>
 286 <td class="function_name">
 287 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-guess-segment-properties" title="hb_buffer_guess_segment_properties ()">hb_buffer_guess_segment_properties</a> <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-Buffers.html#hb-buffer-set-unicode-funcs" title="hb_buffer_set_unicode_funcs ()">hb_buffer_set_unicode_funcs</a> <span class="c_punctuation">()</span>
 296 </td>
 297 </tr>
 298 <tr>
 299 <td class="function_type">
 300 <a class="link" href="harfbuzz-hb-unicode.html#hb-unicode-funcs-t"><span class="returnvalue">hb_unicode_funcs_t</span></a> *
 301 </td>
 302 <td class="function_name">
 303 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-unicode-funcs" title="hb_buffer_get_unicode_funcs ()">hb_buffer_get_unicode_funcs</a> <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-Buffers.html#hb-buffer-set-user-data" title="hb_buffer_set_user_data ()">hb_buffer_set_user_data</a> <span class="c_punctuation">()</span>
 312 </td>
 313 </tr>
 314 <tr>
 315 <td class="function_type">
 316 <span class="returnvalue">void</span> *
 317 </td>
 318 <td class="function_name">
 319 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-user-data" title="hb_buffer_get_user_data ()">hb_buffer_get_user_data</a> <span class="c_punctuation">()</span>
 320 </td>
 321 </tr>
 322 <tr>
 323 <td class="function_type">
 324 <a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="returnvalue">hb_glyph_info_t</span></a> *
 325 </td>
 326 <td class="function_name">
 327 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-glyph-infos" title="hb_buffer_get_glyph_infos ()">hb_buffer_get_glyph_infos</a> <span class="c_punctuation">()</span>
 328 </td>
 329 </tr>
 330 <tr>
 331 <td class="function_type">
 332 <a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t"><span class="returnvalue">hb_glyph_position_t</span></a> *
 333 </td>
 334 <td class="function_name">
 335 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-glyph-positions" title="hb_buffer_get_glyph_positions ()">hb_buffer_get_glyph_positions</a> <span class="c_punctuation">()</span>
 336 </td>
 337 </tr>
 338 <tr>
 339 <td class="function_type">
 340 <span class="returnvalue">void</span>
 341 </td>
 342 <td class="function_name">
 343 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-replacement-codepoint" title="hb_buffer_set_replacement_codepoint ()">hb_buffer_set_replacement_codepoint</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-codepoint-t" title="hb_codepoint_t"><span class="returnvalue">hb_codepoint_t</span></a>
 349 </td>
 350 <td class="function_name">
 351 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-replacement-codepoint" title="hb_buffer_get_replacement_codepoint ()">hb_buffer_get_replacement_codepoint</a> <span class="c_punctuation">()</span>
 352 </td>
 353 </tr>
 354 <tr>
 355 <td class="function_type">
 356 <span class="returnvalue">void</span>
 357 </td>
 358 <td class="function_name">
 359 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-normalize-glyphs" title="hb_buffer_normalize_glyphs ()">hb_buffer_normalize_glyphs</a> <span class="c_punctuation">()</span>
 360 </td>
 361 </tr>
 362 <tr>
 363 <td class="function_type">
 364 <span class="returnvalue">void</span>
 365 </td>
 366 <td class="function_name">
 367 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reverse" title="hb_buffer_reverse ()">hb_buffer_reverse</a> <span class="c_punctuation">()</span>
 368 </td>
 369 </tr>
 370 <tr>
 371 <td class="function_type">
 372 <span class="returnvalue">void</span>
 373 </td>
 374 <td class="function_name">
 375 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reverse-range" title="hb_buffer_reverse_range ()">hb_buffer_reverse_range</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-Buffers.html#hb-buffer-reverse-clusters" title="hb_buffer_reverse_clusters ()">hb_buffer_reverse_clusters</a> <span class="c_punctuation">()</span>
 384 </td>
 385 </tr>
 386 <tr>
 387 <td class="function_type">unsigned <span class="returnvalue">int</span>
 388 </td>
 389 <td class="function_name">
 390 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-glyphs" title="hb_buffer_serialize_glyphs ()">hb_buffer_serialize_glyphs</a> <span class="c_punctuation">()</span>
 391 </td>
 392 </tr>
 393 <tr>
 394 <td class="function_type">
 395 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 396 </td>
 397 <td class="function_name">
 398 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-deserialize-glyphs" title="hb_buffer_deserialize_glyphs ()">hb_buffer_deserialize_glyphs</a> <span class="c_punctuation">()</span>
 399 </td>
 400 </tr>
 401 <tr>
 402 <td class="function_type">
 403 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="returnvalue">hb_buffer_serialize_format_t</span></a>
 404 </td>
 405 <td class="function_name">
 406 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-from-string" title="hb_buffer_serialize_format_from_string ()">hb_buffer_serialize_format_from_string</a> <span class="c_punctuation">()</span>
 407 </td>
 408 </tr>
 409 <tr>
 410 <td class="function_type">const <span class="returnvalue">char</span> *
 411 </td>
 412 <td class="function_name">
 413 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-to-string" title="hb_buffer_serialize_format_to_string ()">hb_buffer_serialize_format_to_string</a> <span class="c_punctuation">()</span>
 414 </td>
 415 </tr>
 416 <tr>
 417 <td class="function_type">const <span class="returnvalue">char</span> **
 418 </td>
 419 <td class="function_name">
 420 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-list-formats" title="hb_buffer_serialize_list_formats ()">hb_buffer_serialize_list_formats</a> <span class="c_punctuation">()</span>
 421 </td>
 422 </tr>
 423 <tr>
 424 <td class="function_type">
 425 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 426 </td>
 427 <td class="function_name">
 428 <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-equal" title="hb_segment_properties_equal ()">hb_segment_properties_equal</a> <span class="c_punctuation">()</span>
 429 </td>
 430 </tr>
 431 <tr>
 432 <td class="function_type">unsigned <span class="returnvalue">int</span>
 433 </td>
 434 <td class="function_name">
 435 <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-hash" title="hb_segment_properties_hash ()">hb_segment_properties_hash</a> <span class="c_punctuation">()</span>
 436 </td>
 437 </tr>
 438 <tr>
 439 <td class="function_type">
 440 <span class="returnvalue">void</span>
 441 </td>
 442 <td class="function_name">
 443 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-message-func" title="hb_buffer_set_message_func ()">hb_buffer_set_message_func</a> <span class="c_punctuation">()</span>
 444 </td>
 445 </tr>
 446 <tr>
 447 <td class="function_type">
 448 <a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
 449 </td>
 450 <td class="function_name">
 451 <span class="c_punctuation">(</span><a class="link" href="harfbuzz-Buffers.html#hb-buffer-message-func-t" title="hb_buffer_message_func_t ()">*hb_buffer_message_func_t</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 452 </td>
 453 </tr>
 454 </tbody>
 455 </table></div>
 456 </div>
 457 <a name="hb-buffer-t"></a><a name="hb-glyph-info-t"></a><a name="hb-glyph-position-t"></a><a name="hb-segment-properties-t"></a><div class="refsect1">
 458 <a name="harfbuzz-Buffers.other"></a><h2>Types and Values</h2>
 459 <div class="informaltable"><table width="100%" border="0">
 460 <colgroup>
 461 <col width="150px" class="name">
 462 <col class="description">
 463 </colgroup>
 464 <tbody>
 465 <tr>
 466 <td class="define_keyword">#define</td>
 467 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#HB-SEGMENT-PROPERTIES-DEFAULT:CAPS" title="HB_SEGMENT_PROPERTIES_DEFAULT">HB_SEGMENT_PROPERTIES_DEFAULT</a></td>
 468 </tr>
 469 <tr>
 470 <td class="define_keyword">#define</td>
 471 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-REPLACEMENT-CODEPOINT-DEFAULT:CAPS" title="HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT">HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT</a></td>
 472 </tr>
 473 <tr>
 474 <td class="typedef_keyword">typedef</td>
 475 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t">hb_buffer_t</a></td>
 476 </tr>
 477 <tr>
 478 <td class="datatype_keyword"> </td>
 479 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t-struct" title="hb_glyph_info_t">hb_glyph_info_t</a></td>
 480 </tr>
 481 <tr>
 482 <td class="datatype_keyword"> </td>
 483 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t-struct" title="hb_glyph_position_t">hb_glyph_position_t</a></td>
 484 </tr>
 485 <tr>
 486 <td class="datatype_keyword">enum</td>
 487 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-content-type-t" title="enum hb_buffer_content_type_t">hb_buffer_content_type_t</a></td>
 488 </tr>
 489 <tr>
 490 <td class="datatype_keyword">enum</td>
 491 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-flags-t" title="enum hb_buffer_flags_t">hb_buffer_flags_t</a></td>
 492 </tr>
 493 <tr>
 494 <td class="datatype_keyword">enum</td>
 495 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-cluster-level-t" title="enum hb_buffer_cluster_level_t">hb_buffer_cluster_level_t</a></td>
 496 </tr>
 497 <tr>
 498 <td class="datatype_keyword"> </td>
 499 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t-struct" title="hb_segment_properties_t">hb_segment_properties_t</a></td>
 500 </tr>
 501 <tr>
 502 <td class="datatype_keyword">enum</td>
 503 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t">hb_buffer_serialize_format_t</a></td>
 504 </tr>
 505 <tr>
 506 <td class="datatype_keyword">enum</td>
 507 <td class="function_name"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-flags-t" title="enum hb_buffer_serialize_flags_t">hb_buffer_serialize_flags_t</a></td>
 508 </tr>
 509 </tbody>
 510 </table></div>
 511 </div>
 512 <div class="refsect1">
 513 <a name="harfbuzz-Buffers.object-hierarchy"></a><h2>Object Hierarchy</h2>
 514 <pre class="screen">    GBoxed
 515     <span class="lineart">├──</span> hb_buffer_t
 516     <span class="lineart">├──</span> hb_glyph_info_t
 517     <span class="lineart">├──</span> hb_glyph_position_t
 518     <span class="lineart">╰──</span> hb_segment_properties_t
 519     GEnum
 520     <span class="lineart">├──</span> hb_buffer_cluster_level_t
 521     <span class="lineart">├──</span> hb_buffer_content_type_t
 522     <span class="lineart">╰──</span> hb_buffer_serialize_format_t
 523     GFlags
 524     <span class="lineart">├──</span> hb_buffer_flags_t
 525     <span class="lineart">╰──</span> hb_buffer_serialize_flags_t
 526 </pre>
 527 </div>
 528 <div class="refsect1">
 529 <a name="harfbuzz-Buffers.includes"></a><h2>Includes</h2>
 530 <pre class="synopsis">#include &lt;hb.h&gt;
 531 </pre>
 532 </div>
 533 <div class="refsect1">
 534 <a name="harfbuzz-Buffers.description"></a><h2>Description</h2>
 535 <p>Buffers serve dual role in HarfBuzz; they hold the input characters that are
 536 passed <a class="link" href="harfbuzz-Shaping.html#hb-shape" title="hb_shape ()"><code class="function">hb_shape()</code></a>, and after shaping they hold the output glyphs.</p>
 537 </div>
 538 <div class="refsect1">
 539 <a name="harfbuzz-Buffers.functions_details"></a><h2>Functions</h2>
 540 <div class="refsect2">
 541 <a name="hb-buffer-create"></a><h3>hb_buffer_create ()</h3>
 542 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
 543 hb_buffer_create (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 544 </div>
 545 <hr>
 546 <div class="refsect2">
 547 <a name="hb-buffer-reference"></a><h3>hb_buffer_reference ()</h3>
 548 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
 549 hb_buffer_reference (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
 550 <p>Increases the reference count on <em class="parameter"><code>buffer</code></em>
 551  by one. This prevents <em class="parameter"><code>buffer</code></em>
 552  from
 553 being destroyed until a matching call to <a class="link" href="harfbuzz-Buffers.html#hb-buffer-destroy" title="hb_buffer_destroy ()"><code class="function">hb_buffer_destroy()</code></a> is made.</p>
 554 <div class="refsect3">
 555 <a name="id-1.3.3.5.12.3.5"></a><h4>Parameters</h4>
 556 <div class="informaltable"><table width="100%" border="0">
 557 <colgroup>
 558 <col width="150px" class="parameters_name">
 559 <col class="parameters_description">
 560 <col width="200px" class="parameters_annotations">
 561 </colgroup>
 562 <tbody><tr>
 563 <td class="parameter_name"><p>buffer</p></td>
 564 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 565 <td class="parameter_annotations"> </td>
 566 </tr></tbody>
 567 </table></div>
 568 </div>
 569 <div class="refsect3">
 570 <a name="id-1.3.3.5.12.3.6"></a><h4>Returns</h4>
 571 <p>The referenced <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>. </p>
 572 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
 573 </div>
 574 <p class="since">Since 0.9.2</p>
 575 </div>
 576 <hr>
 577 <div class="refsect2">
 578 <a name="hb-buffer-get-empty"></a><h3>hb_buffer_get_empty ()</h3>
 579 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="returnvalue">hb_buffer_t</span></a> *
 580 hb_buffer_get_empty (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 581 <div class="refsect3">
 582 <a name="id-1.3.3.5.12.4.4"></a><h4>Returns</h4>
 583 <p>. </p>
 584 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
 585 </div>
 586 <p class="since">Since 0.9.2</p>
 587 </div>
 588 <hr>
 589 <div class="refsect2">
 590 <a name="hb-buffer-destroy"></a><h3>hb_buffer_destroy ()</h3>
 591 <pre class="programlisting"><span class="returnvalue">void</span>
 592 hb_buffer_destroy (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
 593 <p>Deallocate the <em class="parameter"><code>buffer</code></em>
 594 .
 595 Decreases the reference count on <em class="parameter"><code>buffer</code></em>
 596  by one. If the result is zero, then
 597 <em class="parameter"><code>buffer</code></em>
 598  and all associated resources are freed. See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reference" title="hb_buffer_reference ()"><code class="function">hb_buffer_reference()</code></a>.</p>
 599 <div class="refsect3">
 600 <a name="id-1.3.3.5.12.5.5"></a><h4>Parameters</h4>
 601 <div class="informaltable"><table width="100%" border="0">
 602 <colgroup>
 603 <col width="150px" class="parameters_name">
 604 <col class="parameters_description">
 605 <col width="200px" class="parameters_annotations">
 606 </colgroup>
 607 <tbody><tr>
 608 <td class="parameter_name"><p>buffer</p></td>
 609 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 610 <td class="parameter_annotations"> </td>
 611 </tr></tbody>
 612 </table></div>
 613 </div>
 614 <p class="since">Since 0.9.2</p>
 615 </div>
 616 <hr>
 617 <div class="refsect2">
 618 <a name="hb-buffer-reset"></a><h3>hb_buffer_reset ()</h3>
 619 <pre class="programlisting"><span class="returnvalue">void</span>
 620 hb_buffer_reset (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
 621 <p>Resets the buffer to its initial status, as if it was just newly created
 622 with <a class="link" href="harfbuzz-Buffers.html#hb-buffer-create" title="hb_buffer_create ()"><code class="function">hb_buffer_create()</code></a>.</p>
 623 <div class="refsect3">
 624 <a name="id-1.3.3.5.12.6.5"></a><h4>Parameters</h4>
 625 <div class="informaltable"><table width="100%" border="0">
 626 <colgroup>
 627 <col width="150px" class="parameters_name">
 628 <col class="parameters_description">
 629 <col width="200px" class="parameters_annotations">
 630 </colgroup>
 631 <tbody><tr>
 632 <td class="parameter_name"><p>buffer</p></td>
 633 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 634 <td class="parameter_annotations"> </td>
 635 </tr></tbody>
 636 </table></div>
 637 </div>
 638 <p class="since">Since 0.9.2</p>
 639 </div>
 640 <hr>
 641 <div class="refsect2">
 642 <a name="hb-buffer-clear-contents"></a><h3>hb_buffer_clear_contents ()</h3>
 643 <pre class="programlisting"><span class="returnvalue">void</span>
 644 hb_buffer_clear_contents (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
 645 <p>Similar to <a class="link" href="harfbuzz-Buffers.html#hb-buffer-reset" title="hb_buffer_reset ()"><code class="function">hb_buffer_reset()</code></a>, but does not clear the Unicode functions and
 646 the replacement code point.</p>
 647 <div class="refsect3">
 648 <a name="id-1.3.3.5.12.7.5"></a><h4>Parameters</h4>
 649 <div class="informaltable"><table width="100%" border="0">
 650 <colgroup>
 651 <col width="150px" class="parameters_name">
 652 <col class="parameters_description">
 653 <col width="200px" class="parameters_annotations">
 654 </colgroup>
 655 <tbody><tr>
 656 <td class="parameter_name"><p>buffer</p></td>
 657 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 658 <td class="parameter_annotations"> </td>
 659 </tr></tbody>
 660 </table></div>
 661 </div>
 662 <p class="since">Since 0.9.11</p>
 663 </div>
 664 <hr>
 665 <div class="refsect2">
 666 <a name="hb-buffer-pre-allocate"></a><h3>hb_buffer_pre_allocate ()</h3>
 667 <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>
 668 hb_buffer_pre_allocate (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 669                         <em class="parameter"><code>unsigned <span class="type">int</span> size</code></em>);</pre>
 670 <p>Pre allocates memory for <em class="parameter"><code>buffer</code></em>
 671  to fit at least <em class="parameter"><code>size</code></em>
 672  number of items.</p>
 673 <div class="refsect3">
 674 <a name="id-1.3.3.5.12.8.5"></a><h4>Parameters</h4>
 675 <div class="informaltable"><table width="100%" border="0">
 676 <colgroup>
 677 <col width="150px" class="parameters_name">
 678 <col class="parameters_description">
 679 <col width="200px" class="parameters_annotations">
 680 </colgroup>
 681 <tbody>
 682 <tr>
 683 <td class="parameter_name"><p>buffer</p></td>
 684 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 685 <td class="parameter_annotations"> </td>
 686 </tr>
 687 <tr>
 688 <td class="parameter_name"><p>size</p></td>
 689 <td class="parameter_description"><p>number of items to pre allocate.</p></td>
 690 <td class="parameter_annotations"> </td>
 691 </tr>
 692 </tbody>
 693 </table></div>
 694 </div>
 695 <div class="refsect3">
 696 <a name="id-1.3.3.5.12.8.6"></a><h4>Returns</h4>
 697 <p><code class="literal">true</code> if <em class="parameter"><code>buffer</code></em>
 698 memory allocation succeeded, <code class="literal">false</code> otherwise.</p>
 699 <p></p>
 700 </div>
 701 <p class="since">Since 0.9.2</p>
 702 </div>
 703 <hr>
 704 <div class="refsect2">
 705 <a name="hb-buffer-allocation-successful"></a><h3>hb_buffer_allocation_successful ()</h3>
 706 <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>
 707 hb_buffer_allocation_successful (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
 708 <p>Check if allocating memory for the buffer succeeded.</p>
 709 <div class="refsect3">
 710 <a name="id-1.3.3.5.12.9.5"></a><h4>Parameters</h4>
 711 <div class="informaltable"><table width="100%" border="0">
 712 <colgroup>
 713 <col width="150px" class="parameters_name">
 714 <col class="parameters_description">
 715 <col width="200px" class="parameters_annotations">
 716 </colgroup>
 717 <tbody><tr>
 718 <td class="parameter_name"><p>buffer</p></td>
 719 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 720 <td class="parameter_annotations"> </td>
 721 </tr></tbody>
 722 </table></div>
 723 </div>
 724 <div class="refsect3">
 725 <a name="id-1.3.3.5.12.9.6"></a><h4>Returns</h4>
 726 <p><code class="literal">true</code> if <em class="parameter"><code>buffer</code></em>
 727 memory allocation succeeded, <code class="literal">false</code> otherwise.</p>
 728 <p></p>
 729 </div>
 730 <p class="since">Since 0.9.2</p>
 731 </div>
 732 <hr>
 733 <div class="refsect2">
 734 <a name="hb-buffer-add"></a><h3>hb_buffer_add ()</h3>
 735 <pre class="programlisting"><span class="returnvalue">void</span>
 736 hb_buffer_add (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 737                <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> codepoint</code></em>,
 738                <em class="parameter"><code>unsigned <span class="type">int</span> cluster</code></em>);</pre>
 739 <p>Appends a character with the Unicode value of <em class="parameter"><code>codepoint</code></em>
 740  to <em class="parameter"><code>buffer</code></em>
 741 , and
 742 gives it the initial cluster value of <em class="parameter"><code>cluster</code></em>
 743 . Clusters can be any thing
 744 the client wants, they are usually used to refer to the index of the
 745 character in the input text stream and are output in
 746 <span class="type">hb_glyph_info_t.cluster</span> field.</p>
 747 <p>This function does not check the validity of <em class="parameter"><code>codepoint</code></em>
 748 , it is up to the
 749 caller to ensure it is a valid Unicode code point.</p>
 750 <div class="refsect3">
 751 <a name="id-1.3.3.5.12.10.6"></a><h4>Parameters</h4>
 752 <div class="informaltable"><table width="100%" border="0">
 753 <colgroup>
 754 <col width="150px" class="parameters_name">
 755 <col class="parameters_description">
 756 <col width="200px" class="parameters_annotations">
 757 </colgroup>
 758 <tbody>
 759 <tr>
 760 <td class="parameter_name"><p>buffer</p></td>
 761 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 762 <td class="parameter_annotations"> </td>
 763 </tr>
 764 <tr>
 765 <td class="parameter_name"><p>codepoint</p></td>
 766 <td class="parameter_description"><p>a Unicode code point.</p></td>
 767 <td class="parameter_annotations"> </td>
 768 </tr>
 769 <tr>
 770 <td class="parameter_name"><p>cluster</p></td>
 771 <td class="parameter_description"><p>the cluster value of <em class="parameter"><code>codepoint</code></em>
 772 .</p></td>
 773 <td class="parameter_annotations"> </td>
 774 </tr>
 775 </tbody>
 776 </table></div>
 777 </div>
 778 <p class="since">Since 0.9.7</p>
 779 </div>
 780 <hr>
 781 <div class="refsect2">
 782 <a name="hb-buffer-add-codepoints"></a><h3>hb_buffer_add_codepoints ()</h3>
 783 <pre class="programlisting"><span class="returnvalue">void</span>
 784 hb_buffer_add_codepoints (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 785                           <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> *text</code></em>,
 786                           <em class="parameter"><code><span class="type">int</span> text_length</code></em>,
 787                           <em class="parameter"><code>unsigned <span class="type">int</span> item_offset</code></em>,
 788                           <em class="parameter"><code><span class="type">int</span> item_length</code></em>);</pre>
 789 <p>Appends characters from <em class="parameter"><code>text</code></em>
 790  array to <em class="parameter"><code>buffer</code></em>
 791 . The <em class="parameter"><code>item_offset</code></em>
 792  is the
 793 position of the first character from <em class="parameter"><code>text</code></em>
 794  that will be appended, and
 795 <em class="parameter"><code>item_length</code></em>
 796  is the number of character. When shaping part of a larger text
 797 (e.g. a run of text from a paragraph), instead of passing just the substring
 798 corresponding to the run, it is preferable to pass the whole
 799 paragraph and specify the run start and length as <em class="parameter"><code>item_offset</code></em>
 800  and
 801 <em class="parameter"><code>item_length</code></em>
 802 , respectively, to give HarfBuzz the full context to be able,
 803 for example, to do cross-run Arabic shaping or properly handle combining
 804 marks at stat of run.</p>
 805 <p>This function does not check the validity of <em class="parameter"><code>text</code></em>
 806 , it is up to the caller
 807 to ensure it contains a valid Unicode code points.</p>
 808 <div class="refsect3">
 809 <a name="id-1.3.3.5.12.11.6"></a><h4>Parameters</h4>
 810 <div class="informaltable"><table width="100%" border="0">
 811 <colgroup>
 812 <col width="150px" class="parameters_name">
 813 <col class="parameters_description">
 814 <col width="200px" class="parameters_annotations">
 815 </colgroup>
 816 <tbody>
 817 <tr>
 818 <td class="parameter_name"><p>buffer</p></td>
 819 <td class="parameter_description"><p>a <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> to append characters to.</p></td>
 820 <td class="parameter_annotations"> </td>
 821 </tr>
 822 <tr>
 823 <td class="parameter_name"><p>text</p></td>
 824 <td class="parameter_description"><p> an array of Unicode code points to append. </p></td>
 825 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=text_length]</span></td>
 826 </tr>
 827 <tr>
 828 <td class="parameter_name"><p>text_length</p></td>
 829 <td class="parameter_description"><p>the length of the <em class="parameter"><code>text</code></em>
 830 , or -1 if it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated.</p></td>
 831 <td class="parameter_annotations"> </td>
 832 </tr>
 833 <tr>
 834 <td class="parameter_name"><p>item_offset</p></td>
 835 <td class="parameter_description"><p>the offset of the first code point to add to the <em class="parameter"><code>buffer</code></em>
 836 .</p></td>
 837 <td class="parameter_annotations"> </td>
 838 </tr>
 839 <tr>
 840 <td class="parameter_name"><p>item_length</p></td>
 841 <td class="parameter_description"><p>the number of code points to add to the <em class="parameter"><code>buffer</code></em>
 842 , or -1 for the
 843 end of <em class="parameter"><code>text</code></em>
 844 (assuming it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated).</p></td>
 845 <td class="parameter_annotations"> </td>
 846 </tr>
 847 </tbody>
 848 </table></div>
 849 </div>
 850 <p class="since">Since 0.9.31</p>
 851 </div>
 852 <hr>
 853 <div class="refsect2">
 854 <a name="hb-buffer-add-utf32"></a><h3>hb_buffer_add_utf32 ()</h3>
 855 <pre class="programlisting"><span class="returnvalue">void</span>
 856 hb_buffer_add_utf32 (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 857                      <em class="parameter"><code>const <span class="type">uint32_t</span> *text</code></em>,
 858                      <em class="parameter"><code><span class="type">int</span> text_length</code></em>,
 859                      <em class="parameter"><code>unsigned <span class="type">int</span> item_offset</code></em>,
 860                      <em class="parameter"><code><span class="type">int</span> item_length</code></em>);</pre>
 861 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-codepoints" title="hb_buffer_add_codepoints ()"><code class="function">hb_buffer_add_codepoints()</code></a>.</p>
 862 <p>Replaces invalid UTF-32 characters with the <em class="parameter"><code>buffer</code></em>
 863  replacement code point,
 864 see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-replacement-codepoint" title="hb_buffer_set_replacement_codepoint ()"><code class="function">hb_buffer_set_replacement_codepoint()</code></a>.</p>
 865 <div class="refsect3">
 866 <a name="id-1.3.3.5.12.12.6"></a><h4>Parameters</h4>
 867 <div class="informaltable"><table width="100%" border="0">
 868 <colgroup>
 869 <col width="150px" class="parameters_name">
 870 <col class="parameters_description">
 871 <col width="200px" class="parameters_annotations">
 872 </colgroup>
 873 <tbody>
 874 <tr>
 875 <td class="parameter_name"><p>buffer</p></td>
 876 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 877 <td class="parameter_annotations"> </td>
 878 </tr>
 879 <tr>
 880 <td class="parameter_name"><p>text</p></td>
 881 <td class="parameter_description"><p> an array of UTF-32 characters to append. </p></td>
 882 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=text_length]</span></td>
 883 </tr>
 884 <tr>
 885 <td class="parameter_name"><p>text_length</p></td>
 886 <td class="parameter_description"><p>the length of the <em class="parameter"><code>text</code></em>
 887 , or -1 if it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated.</p></td>
 888 <td class="parameter_annotations"> </td>
 889 </tr>
 890 <tr>
 891 <td class="parameter_name"><p>item_offset</p></td>
 892 <td class="parameter_description"><p>the offset of the first character to add to the <em class="parameter"><code>buffer</code></em>
 893 .</p></td>
 894 <td class="parameter_annotations"> </td>
 895 </tr>
 896 <tr>
 897 <td class="parameter_name"><p>item_length</p></td>
 898 <td class="parameter_description"><p>the number of characters to add to the <em class="parameter"><code>buffer</code></em>
 899 , or -1 for the
 900 end of <em class="parameter"><code>text</code></em>
 901 (assuming it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated).</p></td>
 902 <td class="parameter_annotations"> </td>
 903 </tr>
 904 </tbody>
 905 </table></div>
 906 </div>
 907 <p class="since">Since 0.9.2</p>
 908 </div>
 909 <hr>
 910 <div class="refsect2">
 911 <a name="hb-buffer-add-utf16"></a><h3>hb_buffer_add_utf16 ()</h3>
 912 <pre class="programlisting"><span class="returnvalue">void</span>
 913 hb_buffer_add_utf16 (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 914                      <em class="parameter"><code>const <span class="type">uint16_t</span> *text</code></em>,
 915                      <em class="parameter"><code><span class="type">int</span> text_length</code></em>,
 916                      <em class="parameter"><code>unsigned <span class="type">int</span> item_offset</code></em>,
 917                      <em class="parameter"><code><span class="type">int</span> item_length</code></em>);</pre>
 918 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-codepoints" title="hb_buffer_add_codepoints ()"><code class="function">hb_buffer_add_codepoints()</code></a>.</p>
 919 <p>Replaces invalid UTF-16 characters with the <em class="parameter"><code>buffer</code></em>
 920  replacement code point,
 921 see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-replacement-codepoint" title="hb_buffer_set_replacement_codepoint ()"><code class="function">hb_buffer_set_replacement_codepoint()</code></a>.</p>
 922 <div class="refsect3">
 923 <a name="id-1.3.3.5.12.13.6"></a><h4>Parameters</h4>
 924 <div class="informaltable"><table width="100%" border="0">
 925 <colgroup>
 926 <col width="150px" class="parameters_name">
 927 <col class="parameters_description">
 928 <col width="200px" class="parameters_annotations">
 929 </colgroup>
 930 <tbody>
 931 <tr>
 932 <td class="parameter_name"><p>buffer</p></td>
 933 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 934 <td class="parameter_annotations"> </td>
 935 </tr>
 936 <tr>
 937 <td class="parameter_name"><p>text</p></td>
 938 <td class="parameter_description"><p> an array of UTF-16 characters to append. </p></td>
 939 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=text_length]</span></td>
 940 </tr>
 941 <tr>
 942 <td class="parameter_name"><p>text_length</p></td>
 943 <td class="parameter_description"><p>the length of the <em class="parameter"><code>text</code></em>
 944 , or -1 if it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated.</p></td>
 945 <td class="parameter_annotations"> </td>
 946 </tr>
 947 <tr>
 948 <td class="parameter_name"><p>item_offset</p></td>
 949 <td class="parameter_description"><p>the offset of the first character to add to the <em class="parameter"><code>buffer</code></em>
 950 .</p></td>
 951 <td class="parameter_annotations"> </td>
 952 </tr>
 953 <tr>
 954 <td class="parameter_name"><p>item_length</p></td>
 955 <td class="parameter_description"><p>the number of characters to add to the <em class="parameter"><code>buffer</code></em>
 956 , or -1 for the
 957 end of <em class="parameter"><code>text</code></em>
 958 (assuming it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated).</p></td>
 959 <td class="parameter_annotations"> </td>
 960 </tr>
 961 </tbody>
 962 </table></div>
 963 </div>
 964 <p class="since">Since 0.9.2</p>
 965 </div>
 966 <hr>
 967 <div class="refsect2">
 968 <a name="hb-buffer-add-utf8"></a><h3>hb_buffer_add_utf8 ()</h3>
 969 <pre class="programlisting"><span class="returnvalue">void</span>
 970 hb_buffer_add_utf8 (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
 971                     <em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
 972                     <em class="parameter"><code><span class="type">int</span> text_length</code></em>,
 973                     <em class="parameter"><code>unsigned <span class="type">int</span> item_offset</code></em>,
 974                     <em class="parameter"><code><span class="type">int</span> item_length</code></em>);</pre>
 975 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-codepoints" title="hb_buffer_add_codepoints ()"><code class="function">hb_buffer_add_codepoints()</code></a>.</p>
 976 <p>Replaces invalid UTF-8 characters with the <em class="parameter"><code>buffer</code></em>
 977  replacement code point,
 978 see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-replacement-codepoint" title="hb_buffer_set_replacement_codepoint ()"><code class="function">hb_buffer_set_replacement_codepoint()</code></a>.</p>
 979 <div class="refsect3">
 980 <a name="id-1.3.3.5.12.14.6"></a><h4>Parameters</h4>
 981 <div class="informaltable"><table width="100%" border="0">
 982 <colgroup>
 983 <col width="150px" class="parameters_name">
 984 <col class="parameters_description">
 985 <col width="200px" class="parameters_annotations">
 986 </colgroup>
 987 <tbody>
 988 <tr>
 989 <td class="parameter_name"><p>buffer</p></td>
 990 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
 991 <td class="parameter_annotations"> </td>
 992 </tr>
 993 <tr>
 994 <td class="parameter_name"><p>text</p></td>
 995 <td class="parameter_description"><p> an array of UTF-8
 996 characters to append. </p></td>
 997 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=text_length][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
 998 </tr>
 999 <tr>
1000 <td class="parameter_name"><p>text_length</p></td>
1001 <td class="parameter_description"><p>the length of the <em class="parameter"><code>text</code></em>
1002 , or -1 if it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated.</p></td>
1003 <td class="parameter_annotations"> </td>
1004 </tr>
1005 <tr>
1006 <td class="parameter_name"><p>item_offset</p></td>
1007 <td class="parameter_description"><p>the offset of the first character to add to the <em class="parameter"><code>buffer</code></em>
1008 .</p></td>
1009 <td class="parameter_annotations"> </td>
1010 </tr>
1011 <tr>
1012 <td class="parameter_name"><p>item_length</p></td>
1013 <td class="parameter_description"><p>the number of characters to add to the <em class="parameter"><code>buffer</code></em>
1014 , or -1 for the
1015 end of <em class="parameter"><code>text</code></em>
1016 (assuming it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated).</p></td>
1017 <td class="parameter_annotations"> </td>
1018 </tr>
1019 </tbody>
1020 </table></div>
1021 </div>
1022 <p class="since">Since 0.9.2</p>
1023 </div>
1024 <hr>
1025 <div class="refsect2">
1026 <a name="hb-buffer-add-latin1"></a><h3>hb_buffer_add_latin1 ()</h3>
1027 <pre class="programlisting"><span class="returnvalue">void</span>
1028 hb_buffer_add_latin1 (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1029                       <em class="parameter"><code>const <span class="type">uint8_t</span> *text</code></em>,
1030                       <em class="parameter"><code><span class="type">int</span> text_length</code></em>,
1031                       <em class="parameter"><code>unsigned <span class="type">int</span> item_offset</code></em>,
1032                       <em class="parameter"><code><span class="type">int</span> item_length</code></em>);</pre>
1033 <p>Similar to <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add-codepoints" title="hb_buffer_add_codepoints ()"><code class="function">hb_buffer_add_codepoints()</code></a>, but allows only access to first 256
1034 Unicode code points that can fit in 8-bit strings.</p>
1035 <div class="note">Has nothing to do with non-Unicode Latin-1 encoding.</div>
1036 <div class="refsect3">
1037 <a name="id-1.3.3.5.12.15.6"></a><h4>Parameters</h4>
1038 <div class="informaltable"><table width="100%" border="0">
1039 <colgroup>
1040 <col width="150px" class="parameters_name">
1041 <col class="parameters_description">
1042 <col width="200px" class="parameters_annotations">
1043 </colgroup>
1044 <tbody>
1045 <tr>
1046 <td class="parameter_name"><p>buffer</p></td>
1047 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1048 <td class="parameter_annotations"> </td>
1049 </tr>
1050 <tr>
1051 <td class="parameter_name"><p>text</p></td>
1052 <td class="parameter_description"><p> an array of UTF-8
1053 characters to append. </p></td>
1054 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=text_length][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
1055 </tr>
1056 <tr>
1057 <td class="parameter_name"><p>text_length</p></td>
1058 <td class="parameter_description"><p>the length of the <em class="parameter"><code>text</code></em>
1059 , or -1 if it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated.</p></td>
1060 <td class="parameter_annotations"> </td>
1061 </tr>
1062 <tr>
1063 <td class="parameter_name"><p>item_offset</p></td>
1064 <td class="parameter_description"><p>the offset of the first character to add to the <em class="parameter"><code>buffer</code></em>
1065 .</p></td>
1066 <td class="parameter_annotations"> </td>
1067 </tr>
1068 <tr>
1069 <td class="parameter_name"><p>item_length</p></td>
1070 <td class="parameter_description"><p>the number of characters to add to the <em class="parameter"><code>buffer</code></em>
1071 , or -1 for the
1072 end of <em class="parameter"><code>text</code></em>
1073 (assuming it is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated).</p></td>
1074 <td class="parameter_annotations"> </td>
1075 </tr>
1076 </tbody>
1077 </table></div>
1078 </div>
1079 <p class="since">Since 0.9.39</p>
1080 </div>
1081 <hr>
1082 <div class="refsect2">
1083 <a name="hb-buffer-set-content-type"></a><h3>hb_buffer_set_content_type ()</h3>
1084 <pre class="programlisting"><span class="returnvalue">void</span>
1085 hb_buffer_set_content_type (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1086                             <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-content-type-t" title="enum hb_buffer_content_type_t"><span class="type">hb_buffer_content_type_t</span></a> content_type</code></em>);</pre>
1087 <p>Sets the type of <em class="parameter"><code>buffer</code></em>
1088  contents, buffers are either empty, contain
1089 characters (before shaping) or glyphs (the result of shaping).</p>
1090 <div class="refsect3">
1091 <a name="id-1.3.3.5.12.16.5"></a><h4>Parameters</h4>
1092 <div class="informaltable"><table width="100%" border="0">
1093 <colgroup>
1094 <col width="150px" class="parameters_name">
1095 <col class="parameters_description">
1096 <col width="200px" class="parameters_annotations">
1097 </colgroup>
1098 <tbody>
1099 <tr>
1100 <td class="parameter_name"><p>buffer</p></td>
1101 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1102 <td class="parameter_annotations"> </td>
1103 </tr>
1104 <tr>
1105 <td class="parameter_name"><p>content_type</p></td>
1106 <td class="parameter_description"><p>the type of buffer contents to set</p></td>
1107 <td class="parameter_annotations"> </td>
1108 </tr>
1109 </tbody>
1110 </table></div>
1111 </div>
1112 <p class="since">Since 0.9.5</p>
1113 </div>
1114 <hr>
1115 <div class="refsect2">
1116 <a name="hb-buffer-get-content-type"></a><h3>hb_buffer_get_content_type ()</h3>
1117 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-content-type-t" title="enum hb_buffer_content_type_t"><span class="returnvalue">hb_buffer_content_type_t</span></a>
1118 hb_buffer_get_content_type (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1119 <p>see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-content-type" title="hb_buffer_set_content_type ()"><code class="function">hb_buffer_set_content_type()</code></a>.</p>
1120 <div class="refsect3">
1121 <a name="id-1.3.3.5.12.17.5"></a><h4>Parameters</h4>
1122 <div class="informaltable"><table 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>buffer</p></td>
1130 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1131 <td class="parameter_annotations"> </td>
1132 </tr></tbody>
1133 </table></div>
1134 </div>
1135 <div class="refsect3">
1136 <a name="id-1.3.3.5.12.17.6"></a><h4>Returns</h4>
1137 <p>The type of <em class="parameter"><code>buffer</code></em>
1138 contents.</p>
1139 <p></p>
1140 </div>
1141 <p class="since">Since 0.9.5</p>
1142 </div>
1143 <hr>
1144 <div class="refsect2">
1145 <a name="hb-buffer-set-direction"></a><h3>hb_buffer_set_direction ()</h3>
1146 <pre class="programlisting"><span class="returnvalue">void</span>
1147 hb_buffer_set_direction (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1148                          <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> direction</code></em>);</pre>
1149 <p>Set the text flow direction of the buffer. No shaping can happen without
1150 setting <em class="parameter"><code>buffer</code></em>
1151  direction, and it controls the visual direction for the
1152 output glyphs; for RTL direction the glyphs will be reversed. Many layout
1153 features depend on the proper setting of the direction, for example,
1154 reversing RTL text before shaping, then shaping with LTR direction is not
1155 the same as keeping the text in logical order and shaping with RTL
1156 direction.</p>
1157 <div class="refsect3">
1158 <a name="id-1.3.3.5.12.18.5"></a><h4>Parameters</h4>
1159 <div class="informaltable"><table width="100%" border="0">
1160 <colgroup>
1161 <col width="150px" class="parameters_name">
1162 <col class="parameters_description">
1163 <col width="200px" class="parameters_annotations">
1164 </colgroup>
1165 <tbody>
1166 <tr>
1167 <td class="parameter_name"><p>buffer</p></td>
1168 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1169 <td class="parameter_annotations"> </td>
1170 </tr>
1171 <tr>
1172 <td class="parameter_name"><p>direction</p></td>
1173 <td class="parameter_description"><p>the <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> of the <em class="parameter"><code>buffer</code></em>
1174 </p></td>
1175 <td class="parameter_annotations"> </td>
1176 </tr>
1177 </tbody>
1178 </table></div>
1179 </div>
1180 <p class="since">Since 0.9.2</p>
1181 </div>
1182 <hr>
1183 <div class="refsect2">
1184 <a name="hb-buffer-get-direction"></a><h3>hb_buffer_get_direction ()</h3>
1185 <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="returnvalue">hb_direction_t</span></a>
1186 hb_buffer_get_direction (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1187 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-direction" title="hb_buffer_set_direction ()"><code class="function">hb_buffer_set_direction()</code></a></p>
1188 <div class="refsect3">
1189 <a name="id-1.3.3.5.12.19.5"></a><h4>Parameters</h4>
1190 <div class="informaltable"><table width="100%" border="0">
1191 <colgroup>
1192 <col width="150px" class="parameters_name">
1193 <col class="parameters_description">
1194 <col width="200px" class="parameters_annotations">
1195 </colgroup>
1196 <tbody><tr>
1197 <td class="parameter_name"><p>buffer</p></td>
1198 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1199 <td class="parameter_annotations"> </td>
1200 </tr></tbody>
1201 </table></div>
1202 </div>
1203 <div class="refsect3">
1204 <a name="id-1.3.3.5.12.19.6"></a><h4>Returns</h4>
1205 <p>The direction of the <em class="parameter"><code>buffer</code></em>
1206 .</p>
1207 <p></p>
1208 </div>
1209 <p class="since">Since 0.9.2</p>
1210 </div>
1211 <hr>
1212 <div class="refsect2">
1213 <a name="hb-buffer-set-script"></a><h3>hb_buffer_set_script ()</h3>
1214 <pre class="programlisting"><span class="returnvalue">void</span>
1215 hb_buffer_set_script (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1216                       <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> script</code></em>);</pre>
1217 <p>Sets the script of <em class="parameter"><code>buffer</code></em>
1218  to <em class="parameter"><code>script</code></em>
1219 .</p>
1220 <p>Script is crucial for choosing the proper shaping behaviour for scripts that
1221 require it (e.g. Arabic) and the which OpenType features defined in the font
1222 to be applied.</p>
1223 <p>You can pass one of the predefined <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> values, or use
1224 <a class="link" href="harfbuzz-hb-common.html#hb-script-from-string" title="hb_script_from_string ()"><code class="function">hb_script_from_string()</code></a> or <a class="link" href="harfbuzz-hb-common.html#hb-script-from-iso15924-tag" title="hb_script_from_iso15924_tag ()"><code class="function">hb_script_from_iso15924_tag()</code></a> to get the
1225 corresponding script from an ISO 15924 script tag.</p>
1226 <div class="refsect3">
1227 <a name="id-1.3.3.5.12.20.7"></a><h4>Parameters</h4>
1228 <div class="informaltable"><table width="100%" border="0">
1229 <colgroup>
1230 <col width="150px" class="parameters_name">
1231 <col class="parameters_description">
1232 <col width="200px" class="parameters_annotations">
1233 </colgroup>
1234 <tbody>
1235 <tr>
1236 <td class="parameter_name"><p>buffer</p></td>
1237 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1238 <td class="parameter_annotations"> </td>
1239 </tr>
1240 <tr>
1241 <td class="parameter_name"><p>script</p></td>
1242 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> to set.</p></td>
1243 <td class="parameter_annotations"> </td>
1244 </tr>
1245 </tbody>
1246 </table></div>
1247 </div>
1248 <p class="since">Since 0.9.2</p>
1249 </div>
1250 <hr>
1251 <div class="refsect2">
1252 <a name="hb-buffer-get-script"></a><h3>hb_buffer_get_script ()</h3>
1253 <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="returnvalue">hb_script_t</span></a>
1254 hb_buffer_get_script (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1255 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-script" title="hb_buffer_set_script ()"><code class="function">hb_buffer_set_script()</code></a>.</p>
1256 <div class="refsect3">
1257 <a name="id-1.3.3.5.12.21.5"></a><h4>Parameters</h4>
1258 <div class="informaltable"><table width="100%" border="0">
1259 <colgroup>
1260 <col width="150px" class="parameters_name">
1261 <col class="parameters_description">
1262 <col width="200px" class="parameters_annotations">
1263 </colgroup>
1264 <tbody><tr>
1265 <td class="parameter_name"><p>buffer</p></td>
1266 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1267 <td class="parameter_annotations"> </td>
1268 </tr></tbody>
1269 </table></div>
1270 </div>
1271 <div class="refsect3">
1272 <a name="id-1.3.3.5.12.21.6"></a><h4>Returns</h4>
1273 <p>The <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> of the <em class="parameter"><code>buffer</code></em>
1274 .</p>
1275 <p></p>
1276 </div>
1277 <p class="since">Since 0.9.2</p>
1278 </div>
1279 <hr>
1280 <div class="refsect2">
1281 <a name="hb-buffer-set-language"></a><h3>hb_buffer_set_language ()</h3>
1282 <pre class="programlisting"><span class="returnvalue">void</span>
1283 hb_buffer_set_language (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1284                         <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> language</code></em>);</pre>
1285 <p>Sets the language of <em class="parameter"><code>buffer</code></em>
1286  to <em class="parameter"><code>language</code></em>
1287 .</p>
1288 <p>Languages are crucial for selecting which OpenType feature to apply to the
1289 buffer which can result in applying language-specific behaviour. Languages
1290 are orthogonal to the scripts, and though they are related, they are
1291 different concepts and should not be confused with each other.</p>
1292 <p>Use <a class="link" href="harfbuzz-hb-common.html#hb-language-from-string" title="hb_language_from_string ()"><code class="function">hb_language_from_string()</code></a> to convert from ISO 639 language codes to
1293 <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a>.</p>
1294 <div class="refsect3">
1295 <a name="id-1.3.3.5.12.22.7"></a><h4>Parameters</h4>
1296 <div class="informaltable"><table 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>buffer</p></td>
1305 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1306 <td class="parameter_annotations"> </td>
1307 </tr>
1308 <tr>
1309 <td class="parameter_name"><p>language</p></td>
1310 <td class="parameter_description"><p>an hb_language_t to set.</p></td>
1311 <td class="parameter_annotations"> </td>
1312 </tr>
1313 </tbody>
1314 </table></div>
1315 </div>
1316 <p class="since">Since 0.9.2</p>
1317 </div>
1318 <hr>
1319 <div class="refsect2">
1320 <a name="hb-buffer-get-language"></a><h3>hb_buffer_get_language ()</h3>
1321 <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="returnvalue">hb_language_t</span></a>
1322 hb_buffer_get_language (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1323 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-language" title="hb_buffer_set_language ()"><code class="function">hb_buffer_set_language()</code></a>.</p>
1324 <div class="refsect3">
1325 <a name="id-1.3.3.5.12.23.5"></a><h4>Parameters</h4>
1326 <div class="informaltable"><table width="100%" border="0">
1327 <colgroup>
1328 <col width="150px" class="parameters_name">
1329 <col class="parameters_description">
1330 <col width="200px" class="parameters_annotations">
1331 </colgroup>
1332 <tbody><tr>
1333 <td class="parameter_name"><p>buffer</p></td>
1334 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1335 <td class="parameter_annotations"> </td>
1336 </tr></tbody>
1337 </table></div>
1338 </div>
1339 <div class="refsect3">
1340 <a name="id-1.3.3.5.12.23.6"></a><h4>Returns</h4>
1341 <p>The <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> of the buffer. Must not be freed by the caller. </p>
1342 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
1343 </div>
1344 <p class="since">Since 0.9.2</p>
1345 </div>
1346 <hr>
1347 <div class="refsect2">
1348 <a name="hb-buffer-set-flags"></a><h3>hb_buffer_set_flags ()</h3>
1349 <pre class="programlisting"><span class="returnvalue">void</span>
1350 hb_buffer_set_flags (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1351                      <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-flags-t" title="enum hb_buffer_flags_t"><span class="type">hb_buffer_flags_t</span></a> flags</code></em>);</pre>
1352 <p>Sets <em class="parameter"><code>buffer</code></em>
1353  flags to <em class="parameter"><code>flags</code></em>
1354 . See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-flags-t" title="enum hb_buffer_flags_t"><span class="type">hb_buffer_flags_t</span></a>.</p>
1355 <div class="refsect3">
1356 <a name="id-1.3.3.5.12.24.5"></a><h4>Parameters</h4>
1357 <div class="informaltable"><table width="100%" border="0">
1358 <colgroup>
1359 <col width="150px" class="parameters_name">
1360 <col class="parameters_description">
1361 <col width="200px" class="parameters_annotations">
1362 </colgroup>
1363 <tbody>
1364 <tr>
1365 <td class="parameter_name"><p>buffer</p></td>
1366 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1367 <td class="parameter_annotations"> </td>
1368 </tr>
1369 <tr>
1370 <td class="parameter_name"><p>flags</p></td>
1371 <td class="parameter_description"><p>the buffer flags to set.</p></td>
1372 <td class="parameter_annotations"> </td>
1373 </tr>
1374 </tbody>
1375 </table></div>
1376 </div>
1377 <p class="since">Since 0.9.7</p>
1378 </div>
1379 <hr>
1380 <div class="refsect2">
1381 <a name="hb-buffer-get-flags"></a><h3>hb_buffer_get_flags ()</h3>
1382 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-flags-t" title="enum hb_buffer_flags_t"><span class="returnvalue">hb_buffer_flags_t</span></a>
1383 hb_buffer_get_flags (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1384 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-flags" title="hb_buffer_set_flags ()"><code class="function">hb_buffer_set_flags()</code></a>.</p>
1385 <div class="refsect3">
1386 <a name="id-1.3.3.5.12.25.5"></a><h4>Parameters</h4>
1387 <div class="informaltable"><table width="100%" border="0">
1388 <colgroup>
1389 <col width="150px" class="parameters_name">
1390 <col class="parameters_description">
1391 <col width="200px" class="parameters_annotations">
1392 </colgroup>
1393 <tbody><tr>
1394 <td class="parameter_name"><p>buffer</p></td>
1395 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1396 <td class="parameter_annotations"> </td>
1397 </tr></tbody>
1398 </table></div>
1399 </div>
1400 <div class="refsect3">
1401 <a name="id-1.3.3.5.12.25.6"></a><h4>Returns</h4>
1402 <p>The <em class="parameter"><code>buffer</code></em>
1403 flags.</p>
1404 <p></p>
1405 </div>
1406 <p class="since">Since 0.9.7</p>
1407 </div>
1408 <hr>
1409 <div class="refsect2">
1410 <a name="hb-buffer-set-cluster-level"></a><h3>hb_buffer_set_cluster_level ()</h3>
1411 <pre class="programlisting"><span class="returnvalue">void</span>
1412 hb_buffer_set_cluster_level (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1413                              <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-cluster-level-t" title="enum hb_buffer_cluster_level_t"><span class="type">hb_buffer_cluster_level_t</span></a> cluster_level</code></em>);</pre>
1414 <div class="refsect3">
1415 <a name="id-1.3.3.5.12.26.4"></a><h4>Parameters</h4>
1416 <div class="informaltable"><table width="100%" border="0">
1417 <colgroup>
1418 <col width="150px" class="parameters_name">
1419 <col class="parameters_description">
1420 <col width="200px" class="parameters_annotations">
1421 </colgroup>
1422 <tbody><tr>
1423 <td class="parameter_name"><p>buffer</p></td>
1424 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1425 <td class="parameter_annotations"> </td>
1426 </tr></tbody>
1427 </table></div>
1428 </div>
1429 <p class="since">Since 0.9.42</p>
1430 </div>
1431 <hr>
1432 <div class="refsect2">
1433 <a name="hb-buffer-get-cluster-level"></a><h3>hb_buffer_get_cluster_level ()</h3>
1434 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-cluster-level-t" title="enum hb_buffer_cluster_level_t"><span class="returnvalue">hb_buffer_cluster_level_t</span></a>
1435 hb_buffer_get_cluster_level (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1436 <div class="refsect3">
1437 <a name="id-1.3.3.5.12.27.4"></a><h4>Parameters</h4>
1438 <div class="informaltable"><table width="100%" border="0">
1439 <colgroup>
1440 <col width="150px" class="parameters_name">
1441 <col class="parameters_description">
1442 <col width="200px" class="parameters_annotations">
1443 </colgroup>
1444 <tbody><tr>
1445 <td class="parameter_name"><p>buffer</p></td>
1446 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1447 <td class="parameter_annotations"> </td>
1448 </tr></tbody>
1449 </table></div>
1450 </div>
1451 <div class="refsect3">
1452 <a name="id-1.3.3.5.12.27.5"></a><h4>Returns</h4>
1453 <p></p>
1454 </div>
1455 <p class="since">Since 0.9.42</p>
1456 </div>
1457 <hr>
1458 <div class="refsect2">
1459 <a name="hb-buffer-set-length"></a><h3>hb_buffer_set_length ()</h3>
1460 <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>
1461 hb_buffer_set_length (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1462                       <em class="parameter"><code>unsigned <span class="type">int</span> length</code></em>);</pre>
1463 <p>Similar to <a class="link" href="harfbuzz-Buffers.html#hb-buffer-pre-allocate" title="hb_buffer_pre_allocate ()"><code class="function">hb_buffer_pre_allocate()</code></a>, but clears any new items added at the
1464 end.</p>
1465 <div class="refsect3">
1466 <a name="id-1.3.3.5.12.28.5"></a><h4>Parameters</h4>
1467 <div class="informaltable"><table width="100%" border="0">
1468 <colgroup>
1469 <col width="150px" class="parameters_name">
1470 <col class="parameters_description">
1471 <col width="200px" class="parameters_annotations">
1472 </colgroup>
1473 <tbody>
1474 <tr>
1475 <td class="parameter_name"><p>buffer</p></td>
1476 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1477 <td class="parameter_annotations"> </td>
1478 </tr>
1479 <tr>
1480 <td class="parameter_name"><p>length</p></td>
1481 <td class="parameter_description"><p>the new length of <em class="parameter"><code>buffer</code></em>
1482 .</p></td>
1483 <td class="parameter_annotations"> </td>
1484 </tr>
1485 </tbody>
1486 </table></div>
1487 </div>
1488 <div class="refsect3">
1489 <a name="id-1.3.3.5.12.28.6"></a><h4>Returns</h4>
1490 <p><code class="literal">true</code> if <em class="parameter"><code>buffer</code></em>
1491 memory allocation succeeded, <code class="literal">false</code> otherwise.</p>
1492 <p></p>
1493 </div>
1494 <p class="since">Since 0.9.2</p>
1495 </div>
1496 <hr>
1497 <div class="refsect2">
1498 <a name="hb-buffer-get-length"></a><h3>hb_buffer_get_length ()</h3>
1499 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
1500 hb_buffer_get_length (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1501 <p>Returns the number of items in the buffer.</p>
1502 <div class="refsect3">
1503 <a name="id-1.3.3.5.12.29.5"></a><h4>Parameters</h4>
1504 <div class="informaltable"><table width="100%" border="0">
1505 <colgroup>
1506 <col width="150px" class="parameters_name">
1507 <col class="parameters_description">
1508 <col width="200px" class="parameters_annotations">
1509 </colgroup>
1510 <tbody><tr>
1511 <td class="parameter_name"><p>buffer</p></td>
1512 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1513 <td class="parameter_annotations"> </td>
1514 </tr></tbody>
1515 </table></div>
1516 </div>
1517 <div class="refsect3">
1518 <a name="id-1.3.3.5.12.29.6"></a><h4>Returns</h4>
1519 <p>The <em class="parameter"><code>buffer</code></em>
1520 length.
1521 The value valid as long as buffer has not been modified.</p>
1522 <p></p>
1523 </div>
1524 <p class="since">Since 0.9.2</p>
1525 </div>
1526 <hr>
1527 <div class="refsect2">
1528 <a name="hb-buffer-set-segment-properties"></a><h3>hb_buffer_set_segment_properties ()</h3>
1529 <pre class="programlisting"><span class="returnvalue">void</span>
1530 hb_buffer_set_segment_properties (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1531                                   <em class="parameter"><code>const <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> *props</code></em>);</pre>
1532 <p>Sets the segment properties of the buffer, a shortcut for calling
1533 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-direction" title="hb_buffer_set_direction ()"><code class="function">hb_buffer_set_direction()</code></a>, <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-script" title="hb_buffer_set_script ()"><code class="function">hb_buffer_set_script()</code></a> and
1534 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-language" title="hb_buffer_set_language ()"><code class="function">hb_buffer_set_language()</code></a> individually.</p>
1535 <div class="refsect3">
1536 <a name="id-1.3.3.5.12.30.5"></a><h4>Parameters</h4>
1537 <div class="informaltable"><table width="100%" border="0">
1538 <colgroup>
1539 <col width="150px" class="parameters_name">
1540 <col class="parameters_description">
1541 <col width="200px" class="parameters_annotations">
1542 </colgroup>
1543 <tbody>
1544 <tr>
1545 <td class="parameter_name"><p>buffer</p></td>
1546 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1547 <td class="parameter_annotations"> </td>
1548 </tr>
1549 <tr>
1550 <td class="parameter_name"><p>props</p></td>
1551 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> to use.</p></td>
1552 <td class="parameter_annotations"> </td>
1553 </tr>
1554 </tbody>
1555 </table></div>
1556 </div>
1557 <p class="since">Since 0.9.7</p>
1558 </div>
1559 <hr>
1560 <div class="refsect2">
1561 <a name="hb-buffer-get-segment-properties"></a><h3>hb_buffer_get_segment_properties ()</h3>
1562 <pre class="programlisting"><span class="returnvalue">void</span>
1563 hb_buffer_get_segment_properties (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1564                                   <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> *props</code></em>);</pre>
1565 <p>Sets <em class="parameter"><code>props</code></em>
1566  to the <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> of <em class="parameter"><code>buffer</code></em>
1567 .</p>
1568 <div class="refsect3">
1569 <a name="id-1.3.3.5.12.31.5"></a><h4>Parameters</h4>
1570 <div class="informaltable"><table 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>buffer</p></td>
1579 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1580 <td class="parameter_annotations"> </td>
1581 </tr>
1582 <tr>
1583 <td class="parameter_name"><p>props</p></td>
1584 <td class="parameter_description"><p> the output <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a>. </p></td>
1585 <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>
1586 </tr>
1587 </tbody>
1588 </table></div>
1589 </div>
1590 <p class="since">Since 0.9.7</p>
1591 </div>
1592 <hr>
1593 <div class="refsect2">
1594 <a name="hb-buffer-guess-segment-properties"></a><h3>hb_buffer_guess_segment_properties ()</h3>
1595 <pre class="programlisting"><span class="returnvalue">void</span>
1596 hb_buffer_guess_segment_properties (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1597 <p>Sets unset buffer segment properties based on buffer Unicode
1598 contents.  If buffer is not empty, it must have content type
1599 <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-CONTENT-TYPE-UNICODE:CAPS"><code class="literal">HB_BUFFER_CONTENT_TYPE_UNICODE</code></a>.</p>
1600 <p>If buffer script is not set (ie. is <a class="link" href="harfbuzz-hb-common.html#HB-SCRIPT-INVALID:CAPS"><code class="literal">HB_SCRIPT_INVALID</code></a>), it
1601 will be set to the Unicode script of the first character in
1602 the buffer that has a script other than <a class="link" href="harfbuzz-hb-common.html#HB-SCRIPT-COMMON:CAPS"><code class="literal">HB_SCRIPT_COMMON</code></a>,
1603 <a class="link" href="harfbuzz-hb-common.html#HB-SCRIPT-INHERITED:CAPS"><code class="literal">HB_SCRIPT_INHERITED</code></a>, and <a class="link" href="harfbuzz-hb-common.html#HB-SCRIPT-UNKNOWN:CAPS"><code class="literal">HB_SCRIPT_UNKNOWN</code></a>.</p>
1604 <p>Next, if buffer direction is not set (ie. is <a class="link" href="harfbuzz-hb-common.html#HB-DIRECTION-INVALID:CAPS"><code class="literal">HB_DIRECTION_INVALID</code></a>),
1605 it will be set to the natural horizontal direction of the
1606 buffer script as returned by <a class="link" href="harfbuzz-hb-common.html#hb-script-get-horizontal-direction" title="hb_script_get_horizontal_direction ()"><code class="function">hb_script_get_horizontal_direction()</code></a>.</p>
1607 <p>Finally, if buffer language is not set (ie. is <a class="link" href="harfbuzz-hb-common.html#HB-LANGUAGE-INVALID:CAPS" title="HB_LANGUAGE_INVALID"><code class="literal">HB_LANGUAGE_INVALID</code></a>),
1608 it will be set to the process's default language as returned by
1609 <a class="link" href="harfbuzz-hb-common.html#hb-language-get-default" title="hb_language_get_default ()"><code class="function">hb_language_get_default()</code></a>.  This may change in the future by
1610 taking buffer script into consideration when choosing a language.</p>
1611 <div class="refsect3">
1612 <a name="id-1.3.3.5.12.32.8"></a><h4>Parameters</h4>
1613 <div class="informaltable"><table width="100%" border="0">
1614 <colgroup>
1615 <col width="150px" class="parameters_name">
1616 <col class="parameters_description">
1617 <col width="200px" class="parameters_annotations">
1618 </colgroup>
1619 <tbody><tr>
1620 <td class="parameter_name"><p>buffer</p></td>
1621 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1622 <td class="parameter_annotations"> </td>
1623 </tr></tbody>
1624 </table></div>
1625 </div>
1626 <p class="since">Since 0.9.7</p>
1627 </div>
1628 <hr>
1629 <div class="refsect2">
1630 <a name="hb-buffer-set-unicode-funcs"></a><h3>hb_buffer_set_unicode_funcs ()</h3>
1631 <pre class="programlisting"><span class="returnvalue">void</span>
1632 hb_buffer_set_unicode_funcs (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1633                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-unicode.html#hb-unicode-funcs-t"><span class="type">hb_unicode_funcs_t</span></a> *unicode_funcs</code></em>);</pre>
1634 <div class="refsect3">
1635 <a name="id-1.3.3.5.12.33.4"></a><h4>Parameters</h4>
1636 <div class="informaltable"><table width="100%" border="0">
1637 <colgroup>
1638 <col width="150px" class="parameters_name">
1639 <col class="parameters_description">
1640 <col width="200px" class="parameters_annotations">
1641 </colgroup>
1642 <tbody><tr>
1643 <td class="parameter_name"><p>buffer</p></td>
1644 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1645 <td class="parameter_annotations"> </td>
1646 </tr></tbody>
1647 </table></div>
1648 </div>
1649 <p class="since">Since 0.9.2</p>
1650 </div>
1651 <hr>
1652 <div class="refsect2">
1653 <a name="hb-buffer-get-unicode-funcs"></a><h3>hb_buffer_get_unicode_funcs ()</h3>
1654 <pre class="programlisting"><a class="link" href="harfbuzz-hb-unicode.html#hb-unicode-funcs-t"><span class="returnvalue">hb_unicode_funcs_t</span></a> *
1655 hb_buffer_get_unicode_funcs (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1656 <div class="refsect3">
1657 <a name="id-1.3.3.5.12.34.4"></a><h4>Parameters</h4>
1658 <div class="informaltable"><table width="100%" border="0">
1659 <colgroup>
1660 <col width="150px" class="parameters_name">
1661 <col class="parameters_description">
1662 <col width="200px" class="parameters_annotations">
1663 </colgroup>
1664 <tbody><tr>
1665 <td class="parameter_name"><p>buffer</p></td>
1666 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1667 <td class="parameter_annotations"> </td>
1668 </tr></tbody>
1669 </table></div>
1670 </div>
1671 <div class="refsect3">
1672 <a name="id-1.3.3.5.12.34.5"></a><h4>Returns</h4>
1673 <p></p>
1674 </div>
1675 <p class="since">Since 0.9.2</p>
1676 </div>
1677 <hr>
1678 <div class="refsect2">
1679 <a name="hb-buffer-set-user-data"></a><h3>hb_buffer_set_user_data ()</h3>
1680 <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>
1681 hb_buffer_set_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1682                          <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>,
1683                          <em class="parameter"><code><span class="type">void</span> *data</code></em>,
1684                          <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>,
1685                          <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>
1686 <div class="refsect3">
1687 <a name="id-1.3.3.5.12.35.4"></a><h4>Parameters</h4>
1688 <div class="informaltable"><table width="100%" border="0">
1689 <colgroup>
1690 <col width="150px" class="parameters_name">
1691 <col class="parameters_description">
1692 <col width="200px" class="parameters_annotations">
1693 </colgroup>
1694 <tbody><tr>
1695 <td class="parameter_name"><p>buffer</p></td>
1696 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1697 <td class="parameter_annotations"> </td>
1698 </tr></tbody>
1699 </table></div>
1700 </div>
1701 <div class="refsect3">
1702 <a name="id-1.3.3.5.12.35.5"></a><h4>Returns</h4>
1703 <p></p>
1704 </div>
1705 <p class="since">Since 0.9.2</p>
1706 </div>
1707 <hr>
1708 <div class="refsect2">
1709 <a name="hb-buffer-get-user-data"></a><h3>hb_buffer_get_user_data ()</h3>
1710 <pre class="programlisting"><span class="returnvalue">void</span> *
1711 hb_buffer_get_user_data (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1712                          <em class="parameter"><code><a class="link" href="harfbuzz-hb-common.html#hb-user-data-key-t"><span class="type">hb_user_data_key_t</span></a> *key</code></em>);</pre>
1713 <div class="refsect3">
1714 <a name="id-1.3.3.5.12.36.4"></a><h4>Parameters</h4>
1715 <div class="informaltable"><table width="100%" border="0">
1716 <colgroup>
1717 <col width="150px" class="parameters_name">
1718 <col class="parameters_description">
1719 <col width="200px" class="parameters_annotations">
1720 </colgroup>
1721 <tbody><tr>
1722 <td class="parameter_name"><p>buffer</p></td>
1723 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1724 <td class="parameter_annotations"> </td>
1725 </tr></tbody>
1726 </table></div>
1727 </div>
1728 <div class="refsect3">
1729 <a name="id-1.3.3.5.12.36.5"></a><h4>Returns</h4>
1730 <p></p>
1731 </div>
1732 <p class="since">Since 0.9.2</p>
1733 </div>
1734 <hr>
1735 <div class="refsect2">
1736 <a name="hb-buffer-get-glyph-infos"></a><h3>hb_buffer_get_glyph_infos ()</h3>
1737 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="returnvalue">hb_glyph_info_t</span></a> *
1738 hb_buffer_get_glyph_infos (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1739                            <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre>
1740 <p>Returns <em class="parameter"><code>buffer</code></em>
1741  glyph information array.  Returned pointer
1742 is valid as long as <em class="parameter"><code>buffer</code></em>
1743  contents are not modified.</p>
1744 <div class="refsect3">
1745 <a name="id-1.3.3.5.12.37.5"></a><h4>Parameters</h4>
1746 <div class="informaltable"><table width="100%" border="0">
1747 <colgroup>
1748 <col width="150px" class="parameters_name">
1749 <col class="parameters_description">
1750 <col width="200px" class="parameters_annotations">
1751 </colgroup>
1752 <tbody>
1753 <tr>
1754 <td class="parameter_name"><p>buffer</p></td>
1755 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1756 <td class="parameter_annotations"> </td>
1757 </tr>
1758 <tr>
1759 <td class="parameter_name"><p>length</p></td>
1760 <td class="parameter_description"><p> output array length. </p></td>
1761 <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>
1762 </tr>
1763 </tbody>
1764 </table></div>
1765 </div>
1766 <div class="refsect3">
1767 <a name="id-1.3.3.5.12.37.6"></a><h4>Returns</h4>
1768 <p>The <em class="parameter"><code>buffer</code></em>
1769 glyph information array.
1770 The value valid as long as buffer has not been modified. </p>
1771 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length]</span></p>
1772 </div>
1773 <p class="since">Since 0.9.2</p>
1774 </div>
1775 <hr>
1776 <div class="refsect2">
1777 <a name="hb-buffer-get-glyph-positions"></a><h3>hb_buffer_get_glyph_positions ()</h3>
1778 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t"><span class="returnvalue">hb_glyph_position_t</span></a> *
1779 hb_buffer_get_glyph_positions (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1780                                <em class="parameter"><code>unsigned <span class="type">int</span> *length</code></em>);</pre>
1781 <p>Returns <em class="parameter"><code>buffer</code></em>
1782  glyph position array.  Returned pointer
1783 is valid as long as <em class="parameter"><code>buffer</code></em>
1784  contents are not modified.</p>
1785 <div class="refsect3">
1786 <a name="id-1.3.3.5.12.38.5"></a><h4>Parameters</h4>
1787 <div class="informaltable"><table width="100%" border="0">
1788 <colgroup>
1789 <col width="150px" class="parameters_name">
1790 <col class="parameters_description">
1791 <col width="200px" class="parameters_annotations">
1792 </colgroup>
1793 <tbody>
1794 <tr>
1795 <td class="parameter_name"><p>buffer</p></td>
1796 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1797 <td class="parameter_annotations"> </td>
1798 </tr>
1799 <tr>
1800 <td class="parameter_name"><p>length</p></td>
1801 <td class="parameter_description"><p> output length. </p></td>
1802 <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>
1803 </tr>
1804 </tbody>
1805 </table></div>
1806 </div>
1807 <div class="refsect3">
1808 <a name="id-1.3.3.5.12.38.6"></a><h4>Returns</h4>
1809 <p>The <em class="parameter"><code>buffer</code></em>
1810 glyph position array.
1811 The value valid as long as buffer has not been modified. </p>
1812 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=length]</span></p>
1813 </div>
1814 <p class="since">Since 0.9.2</p>
1815 </div>
1816 <hr>
1817 <div class="refsect2">
1818 <a name="hb-buffer-set-replacement-codepoint"></a><h3>hb_buffer_set_replacement_codepoint ()</h3>
1819 <pre class="programlisting"><span class="returnvalue">void</span>
1820 hb_buffer_set_replacement_codepoint (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1821                                      <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> replacement</code></em>);</pre>
1822 <p>Sets the <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> that replaces invalid entries for a given encoding
1823 when adding text to <em class="parameter"><code>buffer</code></em>
1824 .</p>
1825 <p>Default is <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-REPLACEMENT-CODEPOINT-DEFAULT:CAPS" title="HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT"><code class="literal">HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT</code></a>.</p>
1826 <div class="refsect3">
1827 <a name="id-1.3.3.5.12.39.6"></a><h4>Parameters</h4>
1828 <div class="informaltable"><table width="100%" border="0">
1829 <colgroup>
1830 <col width="150px" class="parameters_name">
1831 <col class="parameters_description">
1832 <col width="200px" class="parameters_annotations">
1833 </colgroup>
1834 <tbody>
1835 <tr>
1836 <td class="parameter_name"><p>buffer</p></td>
1837 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1838 <td class="parameter_annotations"> </td>
1839 </tr>
1840 <tr>
1841 <td class="parameter_name"><p>replacement</p></td>
1842 <td class="parameter_description"><p>the replacement <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a></p></td>
1843 <td class="parameter_annotations"> </td>
1844 </tr>
1845 </tbody>
1846 </table></div>
1847 </div>
1848 <p class="since">Since 0.9.31</p>
1849 </div>
1850 <hr>
1851 <div class="refsect2">
1852 <a name="hb-buffer-get-replacement-codepoint"></a><h3>hb_buffer_get_replacement_codepoint ()</h3>
1853 <pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="returnvalue">hb_codepoint_t</span></a>
1854 hb_buffer_get_replacement_codepoint (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1855 <p>See <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-replacement-codepoint" title="hb_buffer_set_replacement_codepoint ()"><code class="function">hb_buffer_set_replacement_codepoint()</code></a>.</p>
1856 <div class="refsect3">
1857 <a name="id-1.3.3.5.12.40.5"></a><h4>Parameters</h4>
1858 <div class="informaltable"><table width="100%" border="0">
1859 <colgroup>
1860 <col width="150px" class="parameters_name">
1861 <col class="parameters_description">
1862 <col width="200px" class="parameters_annotations">
1863 </colgroup>
1864 <tbody><tr>
1865 <td class="parameter_name"><p>buffer</p></td>
1866 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1867 <td class="parameter_annotations"> </td>
1868 </tr></tbody>
1869 </table></div>
1870 </div>
1871 <div class="refsect3">
1872 <a name="id-1.3.3.5.12.40.6"></a><h4>Returns</h4>
1873 <p>The <em class="parameter"><code>buffer</code></em>
1874 replacement <a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a>.</p>
1875 <p></p>
1876 </div>
1877 <p class="since">Since 0.9.31</p>
1878 </div>
1879 <hr>
1880 <div class="refsect2">
1881 <a name="hb-buffer-normalize-glyphs"></a><h3>hb_buffer_normalize_glyphs ()</h3>
1882 <pre class="programlisting"><span class="returnvalue">void</span>
1883 hb_buffer_normalize_glyphs (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1884 <p>Reorders a glyph buffer to have canonical in-cluster glyph order / position.
1885 The resulting clusters should behave identical to pre-reordering clusters.</p>
1886 <div class="note">This has nothing to do with Unicode normalization.</div>
1887 <div class="refsect3">
1888 <a name="id-1.3.3.5.12.41.6"></a><h4>Parameters</h4>
1889 <div class="informaltable"><table width="100%" border="0">
1890 <colgroup>
1891 <col width="150px" class="parameters_name">
1892 <col class="parameters_description">
1893 <col width="200px" class="parameters_annotations">
1894 </colgroup>
1895 <tbody><tr>
1896 <td class="parameter_name"><p>buffer</p></td>
1897 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1898 <td class="parameter_annotations"> </td>
1899 </tr></tbody>
1900 </table></div>
1901 </div>
1902 <p class="since">Since 0.9.2</p>
1903 </div>
1904 <hr>
1905 <div class="refsect2">
1906 <a name="hb-buffer-reverse"></a><h3>hb_buffer_reverse ()</h3>
1907 <pre class="programlisting"><span class="returnvalue">void</span>
1908 hb_buffer_reverse (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1909 <p>Reverses buffer contents.</p>
1910 <div class="refsect3">
1911 <a name="id-1.3.3.5.12.42.5"></a><h4>Parameters</h4>
1912 <div class="informaltable"><table width="100%" border="0">
1913 <colgroup>
1914 <col width="150px" class="parameters_name">
1915 <col class="parameters_description">
1916 <col width="200px" class="parameters_annotations">
1917 </colgroup>
1918 <tbody><tr>
1919 <td class="parameter_name"><p>buffer</p></td>
1920 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1921 <td class="parameter_annotations"> </td>
1922 </tr></tbody>
1923 </table></div>
1924 </div>
1925 <p class="since">Since 0.9.2</p>
1926 </div>
1927 <hr>
1928 <div class="refsect2">
1929 <a name="hb-buffer-reverse-range"></a><h3>hb_buffer_reverse_range ()</h3>
1930 <pre class="programlisting"><span class="returnvalue">void</span>
1931 hb_buffer_reverse_range (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1932                          <em class="parameter"><code>unsigned <span class="type">int</span> start</code></em>,
1933                          <em class="parameter"><code>unsigned <span class="type">int</span> end</code></em>);</pre>
1934 <p>Reverses buffer contents between start to end.</p>
1935 <div class="refsect3">
1936 <a name="id-1.3.3.5.12.43.5"></a><h4>Parameters</h4>
1937 <div class="informaltable"><table width="100%" border="0">
1938 <colgroup>
1939 <col width="150px" class="parameters_name">
1940 <col class="parameters_description">
1941 <col width="200px" class="parameters_annotations">
1942 </colgroup>
1943 <tbody>
1944 <tr>
1945 <td class="parameter_name"><p>buffer</p></td>
1946 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1947 <td class="parameter_annotations"> </td>
1948 </tr>
1949 <tr>
1950 <td class="parameter_name"><p>start</p></td>
1951 <td class="parameter_description"><p>start index.</p></td>
1952 <td class="parameter_annotations"> </td>
1953 </tr>
1954 <tr>
1955 <td class="parameter_name"><p>end</p></td>
1956 <td class="parameter_description"><p>end index.</p></td>
1957 <td class="parameter_annotations"> </td>
1958 </tr>
1959 </tbody>
1960 </table></div>
1961 </div>
1962 <p class="since">Since 0.9.41</p>
1963 </div>
1964 <hr>
1965 <div class="refsect2">
1966 <a name="hb-buffer-reverse-clusters"></a><h3>hb_buffer_reverse_clusters ()</h3>
1967 <pre class="programlisting"><span class="returnvalue">void</span>
1968 hb_buffer_reverse_clusters (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>);</pre>
1969 <p>Reverses buffer clusters.  That is, the buffer contents are
1970 reversed, then each cluster (consecutive items having the
1971 same cluster number) are reversed again.</p>
1972 <div class="refsect3">
1973 <a name="id-1.3.3.5.12.44.5"></a><h4>Parameters</h4>
1974 <div class="informaltable"><table width="100%" border="0">
1975 <colgroup>
1976 <col width="150px" class="parameters_name">
1977 <col class="parameters_description">
1978 <col width="200px" class="parameters_annotations">
1979 </colgroup>
1980 <tbody><tr>
1981 <td class="parameter_name"><p>buffer</p></td>
1982 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
1983 <td class="parameter_annotations"> </td>
1984 </tr></tbody>
1985 </table></div>
1986 </div>
1987 <p class="since">Since 0.9.2</p>
1988 </div>
1989 <hr>
1990 <div class="refsect2">
1991 <a name="hb-buffer-serialize-glyphs"></a><h3>hb_buffer_serialize_glyphs ()</h3>
1992 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
1993 hb_buffer_serialize_glyphs (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
1994                             <em class="parameter"><code>unsigned <span class="type">int</span> start</code></em>,
1995                             <em class="parameter"><code>unsigned <span class="type">int</span> end</code></em>,
1996                             <em class="parameter"><code><span class="type">char</span> *buf</code></em>,
1997                             <em class="parameter"><code>unsigned <span class="type">int</span> buf_size</code></em>,
1998                             <em class="parameter"><code>unsigned <span class="type">int</span> *buf_consumed</code></em>,
1999                             <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> *font</code></em>,
2000                             <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a> format</code></em>,
2001                             <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-flags-t" title="enum hb_buffer_serialize_flags_t"><span class="type">hb_buffer_serialize_flags_t</span></a> flags</code></em>);</pre>
2002 <p>Serializes <em class="parameter"><code>buffer</code></em>
2003  into a textual representation of its glyph content,
2004 useful for showing the contents of the buffer, for example during debugging.
2005 There are currently two supported serialization formats:</p>
2006 <div class="refsect3">
2007 <a name="id-1.3.3.5.12.45.5"></a><h4>text</h4>
2008 <p>A human-readable, plain text format.
2009 The serialized glyphs will look something like:</p>
2010 <p><code class="literal">
2011 [uni0651=0@518,0+0|uni0628=0+1897]
2012 </code></p>
2013 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
2014 <li class="listitem"><p>The serialized glyphs are delimited with <code class="literal">[</code> and <code class="literal">]</code>.</p></li>
2015 <li class="listitem"><p>Glyphs are separated with <code class="literal">|</code></p></li>
2016 <li class="listitem">
2017 <p>Each glyph starts with glyph name, or glyph index if
2018 <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-SERIALIZE-FLAG-NO-GLYPH-NAMES:CAPS"><span class="type">HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES</span></a> flag is set. Then,</p>
2019 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: circle; ">
2020 <li class="listitem"><p>If <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-SERIALIZE-FLAG-NO-CLUSTERS:CAPS"><span class="type">HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS</span></a> is not set, <code class="literal">=</code> then <span class="type">hb_glyph_info_t.cluster</span>.</p></li>
2021 <li class="listitem">
2022 <p>If <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-SERIALIZE-FLAG-NO-POSITIONS:CAPS"><span class="type">HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS</span></a> is not set, the <a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t"><span class="type">hb_glyph_position_t</span></a> in the format:</p>
2023 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: square; ">
2024 <li class="listitem"><p>If both <span class="type">hb_glyph_position_t.x_offset</span> and <span class="type">hb_glyph_position_t.y_offset</span> are not 0, <code class="literal">@x_offset,y_offset</code>. Then,</p></li>
2025 <li class="listitem"><p><code class="literal">+x_advance</code>, then <code class="literal">,y_advance</code> if <span class="type">hb_glyph_position_t.y_advance</span> is not 0. Then,</p></li>
2026 </ul></div>
2027 </li>
2028 <li class="listitem"><p>If <a class="link" href="harfbuzz-Buffers.html#HB-BUFFER-SERIALIZE-FLAG-GLYPH-EXTENTS:CAPS"><span class="type">HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS</span></a> is set, the
2029 <span class="type">hb_glyph_extents_t</span> in the format
2030 <code class="literal">&lt;x_bearing,y_bearing,width,height&gt;</code></p></li>
2031 </ul></div>
2032 </li>
2033 </ul></div>
2034 </div>
2035 <div class="refsect3">
2036 <a name="id-1.3.3.5.12.45.6"></a><h4>json</h4>
2037 <p>TODO.</p>
2038 </div>
2039 <div class="refsect3">
2040 <a name="id-1.3.3.5.12.45.7"></a><h4>Parameters</h4>
2041 <div class="informaltable"><table width="100%" border="0">
2042 <colgroup>
2043 <col width="150px" class="parameters_name">
2044 <col class="parameters_description">
2045 <col width="200px" class="parameters_annotations">
2046 </colgroup>
2047 <tbody>
2048 <tr>
2049 <td class="parameter_name"><p>buffer</p></td>
2050 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> buffer.</p></td>
2051 <td class="parameter_annotations"> </td>
2052 </tr>
2053 <tr>
2054 <td class="parameter_name"><p>start</p></td>
2055 <td class="parameter_description"><p>the first item in <em class="parameter"><code>buffer</code></em>
2056 to serialize.</p></td>
2057 <td class="parameter_annotations"> </td>
2058 </tr>
2059 <tr>
2060 <td class="parameter_name"><p>end</p></td>
2061 <td class="parameter_description"><p>the last item in <em class="parameter"><code>buffer</code></em>
2062 to serialize.</p></td>
2063 <td class="parameter_annotations"> </td>
2064 </tr>
2065 <tr>
2066 <td class="parameter_name"><p>buf</p></td>
2067 <td class="parameter_description"><p> output string to
2068 write serialized buffer into. </p></td>
2069 <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=buf_size][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> uint8_t]</span></td>
2070 </tr>
2071 <tr>
2072 <td class="parameter_name"><p>buf_size</p></td>
2073 <td class="parameter_description"><p>the size of <em class="parameter"><code>buf</code></em>
2074 .</p></td>
2075 <td class="parameter_annotations"> </td>
2076 </tr>
2077 <tr>
2078 <td class="parameter_name"><p>buf_consumed</p></td>
2079 <td class="parameter_description"><p> if not <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, will be set to the number of byes written into <em class="parameter"><code>buf</code></em>
2080 . </p></td>
2081 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
2082 </tr>
2083 <tr>
2084 <td class="parameter_name"><p>font</p></td>
2085 <td class="parameter_description"><p> the <a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> used to shape this buffer, needed to
2086 read glyph names and extents. If <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, and empty font will be used. </p></td>
2087 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
2088 </tr>
2089 <tr>
2090 <td class="parameter_name"><p>format</p></td>
2091 <td class="parameter_description"><p>the <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a> to use for formatting the output.</p></td>
2092 <td class="parameter_annotations"> </td>
2093 </tr>
2094 <tr>
2095 <td class="parameter_name"><p>flags</p></td>
2096 <td class="parameter_description"><p>the <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-flags-t" title="enum hb_buffer_serialize_flags_t"><span class="type">hb_buffer_serialize_flags_t</span></a> that control what glyph properties
2097 to serialize.</p></td>
2098 <td class="parameter_annotations"> </td>
2099 </tr>
2100 </tbody>
2101 </table></div>
2102 </div>
2103 <div class="refsect3">
2104 <a name="id-1.3.3.5.12.45.8"></a><h4>Returns</h4>
2105 <p>The number of serialized items.</p>
2106 <p></p>
2107 </div>
2108 <p class="since">Since 0.9.7</p>
2109 </div>
2110 <hr>
2111 <div class="refsect2">
2112 <a name="hb-buffer-deserialize-glyphs"></a><h3>hb_buffer_deserialize_glyphs ()</h3>
2113 <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>
2114 hb_buffer_deserialize_glyphs (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
2115                               <em class="parameter"><code>const <span class="type">char</span> *buf</code></em>,
2116                               <em class="parameter"><code><span class="type">int</span> buf_len</code></em>,
2117                               <em class="parameter"><code>const <span class="type">char</span> **end_ptr</code></em>,
2118                               <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> *font</code></em>,
2119                               <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a> format</code></em>);</pre>
2120 <div class="refsect3">
2121 <a name="id-1.3.3.5.12.46.4"></a><h4>Parameters</h4>
2122 <div class="informaltable"><table width="100%" border="0">
2123 <colgroup>
2124 <col width="150px" class="parameters_name">
2125 <col class="parameters_description">
2126 <col width="200px" class="parameters_annotations">
2127 </colgroup>
2128 <tbody>
2129 <tr>
2130 <td class="parameter_name"><p>buffer</p></td>
2131 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> buffer.</p></td>
2132 <td class="parameter_annotations"> </td>
2133 </tr>
2134 <tr>
2135 <td class="parameter_name"><p>buf</p></td>
2136 <td class="parameter_description"><p>. </p></td>
2137 <td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=buf_len]</span></td>
2138 </tr>
2139 <tr>
2140 <td class="parameter_name"><p>end_ptr</p></td>
2141 <td class="parameter_description"><p>. </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 <div class="refsect3">
2148 <a name="id-1.3.3.5.12.46.5"></a><h4>Returns</h4>
2149 <p></p>
2150 </div>
2151 <p class="since">Since 0.9.7</p>
2152 </div>
2153 <hr>
2154 <div class="refsect2">
2155 <a name="hb-buffer-serialize-format-from-string"></a><h3>hb_buffer_serialize_format_from_string ()</h3>
2156 <pre class="programlisting"><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="returnvalue">hb_buffer_serialize_format_t</span></a>
2157 hb_buffer_serialize_format_from_string
2158                                (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
2159                                 <em class="parameter"><code><span class="type">int</span> len</code></em>);</pre>
2160 <p>Parses a string into an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a>. Does not check if
2161 <em class="parameter"><code>str</code></em>
2162  is a valid buffer serialization format, use
2163 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-list-formats" title="hb_buffer_serialize_list_formats ()"><code class="function">hb_buffer_serialize_list_formats()</code></a> to get the list of supported formats.</p>
2164 <div class="refsect3">
2165 <a name="id-1.3.3.5.12.47.5"></a><h4>Parameters</h4>
2166 <div class="informaltable"><table width="100%" border="0">
2167 <colgroup>
2168 <col width="150px" class="parameters_name">
2169 <col class="parameters_description">
2170 <col width="200px" class="parameters_annotations">
2171 </colgroup>
2172 <tbody>
2173 <tr>
2174 <td class="parameter_name"><p>str</p></td>
2175 <td class="parameter_description"><p> a string to parse. </p></td>
2176 <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>
2177 </tr>
2178 <tr>
2179 <td class="parameter_name"><p>len</p></td>
2180 <td class="parameter_description"><p>length of <em class="parameter"><code>str</code></em>
2181 , or -1 if string is <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated</p></td>
2182 <td class="parameter_annotations"> </td>
2183 </tr>
2184 </tbody>
2185 </table></div>
2186 </div>
2187 <div class="refsect3">
2188 <a name="id-1.3.3.5.12.47.6"></a><h4>Returns</h4>
2189 <p>The parsed <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a>.</p>
2190 <p></p>
2191 </div>
2192 <p class="since">Since 0.9.7</p>
2193 </div>
2194 <hr>
2195 <div class="refsect2">
2196 <a name="hb-buffer-serialize-format-to-string"></a><h3>hb_buffer_serialize_format_to_string ()</h3>
2197 <pre class="programlisting">const <span class="returnvalue">char</span> *
2198 hb_buffer_serialize_format_to_string (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a> format</code></em>);</pre>
2199 <p>Converts <em class="parameter"><code>format</code></em>
2200  to the string corresponding it, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if it is not a valid
2201 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a>.</p>
2202 <div class="refsect3">
2203 <a name="id-1.3.3.5.12.48.5"></a><h4>Parameters</h4>
2204 <div class="informaltable"><table width="100%" border="0">
2205 <colgroup>
2206 <col width="150px" class="parameters_name">
2207 <col class="parameters_description">
2208 <col width="200px" class="parameters_annotations">
2209 </colgroup>
2210 <tbody><tr>
2211 <td class="parameter_name"><p>format</p></td>
2212 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-format-t" title="enum hb_buffer_serialize_format_t"><span class="type">hb_buffer_serialize_format_t</span></a> to convert.</p></td>
2213 <td class="parameter_annotations"> </td>
2214 </tr></tbody>
2215 </table></div>
2216 </div>
2217 <div class="refsect3">
2218 <a name="id-1.3.3.5.12.48.6"></a><h4>Returns</h4>
2219 <p>A <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> terminated string corresponding to <em class="parameter"><code>format</code></em>
2220 . Should not be freed. </p>
2221 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
2222 </div>
2223 <p class="since">Since 0.9.7</p>
2224 </div>
2225 <hr>
2226 <div class="refsect2">
2227 <a name="hb-buffer-serialize-list-formats"></a><h3>hb_buffer_serialize_list_formats ()</h3>
2228 <pre class="programlisting">const <span class="returnvalue">char</span> **
2229 hb_buffer_serialize_list_formats (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
2230 <p>Returns a list of supported buffer serialization formats.</p>
2231 <div class="refsect3">
2232 <a name="id-1.3.3.5.12.49.5"></a><h4>Returns</h4>
2233 <p>A string array of buffer serialization formats. Should not be freed. </p>
2234 <p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
2235 </div>
2236 <p class="since">Since 0.9.7</p>
2237 </div>
2238 <hr>
2239 <div class="refsect2">
2240 <a name="hb-segment-properties-equal"></a><h3>hb_segment_properties_equal ()</h3>
2241 <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>
2242 hb_segment_properties_equal (<em class="parameter"><code>const <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> *a</code></em>,
2243                              <em class="parameter"><code>const <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> *b</code></em>);</pre>
2244 <p>Checks the equality of two <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a>'s.</p>
2245 <div class="refsect3">
2246 <a name="id-1.3.3.5.12.50.5"></a><h4>Parameters</h4>
2247 <div class="informaltable"><table width="100%" border="0">
2248 <colgroup>
2249 <col width="150px" class="parameters_name">
2250 <col class="parameters_description">
2251 <col width="200px" class="parameters_annotations">
2252 </colgroup>
2253 <tbody>
2254 <tr>
2255 <td class="parameter_name"><p>a</p></td>
2256 <td class="parameter_description"><p>first <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> to compare.</p></td>
2257 <td class="parameter_annotations"> </td>
2258 </tr>
2259 <tr>
2260 <td class="parameter_name"><p>b</p></td>
2261 <td class="parameter_description"><p>second <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> to compare.</p></td>
2262 <td class="parameter_annotations"> </td>
2263 </tr>
2264 </tbody>
2265 </table></div>
2266 </div>
2267 <div class="refsect3">
2268 <a name="id-1.3.3.5.12.50.6"></a><h4>Returns</h4>
2269 <p><code class="literal">true</code> if all properties of <em class="parameter"><code>a</code></em>
2270 equal those of <em class="parameter"><code>b</code></em>
2271 , false otherwise.</p>
2272 <p></p>
2273 </div>
2274 <p class="since">Since 0.9.7</p>
2275 </div>
2276 <hr>
2277 <div class="refsect2">
2278 <a name="hb-segment-properties-hash"></a><h3>hb_segment_properties_hash ()</h3>
2279 <pre class="programlisting">unsigned <span class="returnvalue">int</span>
2280 hb_segment_properties_hash (<em class="parameter"><code>const <a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> *p</code></em>);</pre>
2281 <p>Creates a hash representing <em class="parameter"><code>p</code></em>
2282 .</p>
2283 <div class="refsect3">
2284 <a name="id-1.3.3.5.12.51.5"></a><h4>Parameters</h4>
2285 <div class="informaltable"><table width="100%" border="0">
2286 <colgroup>
2287 <col width="150px" class="parameters_name">
2288 <col class="parameters_description">
2289 <col width="200px" class="parameters_annotations">
2290 </colgroup>
2291 <tbody><tr>
2292 <td class="parameter_name"><p>p</p></td>
2293 <td class="parameter_description"><p><a class="link" href="harfbuzz-Buffers.html#hb-segment-properties-t"><span class="type">hb_segment_properties_t</span></a> to hash.</p></td>
2294 <td class="parameter_annotations"> </td>
2295 </tr></tbody>
2296 </table></div>
2297 </div>
2298 <div class="refsect3">
2299 <a name="id-1.3.3.5.12.51.6"></a><h4>Returns</h4>
2300 <p>A hash of <em class="parameter"><code>p</code></em>
2301 .</p>
2302 <p></p>
2303 </div>
2304 <p class="since">Since 0.9.7</p>
2305 </div>
2306 <hr>
2307 <div class="refsect2">
2308 <a name="hb-buffer-set-message-func"></a><h3>hb_buffer_set_message_func ()</h3>
2309 <pre class="programlisting"><span class="returnvalue">void</span>
2310 hb_buffer_set_message_func (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
2311                             <em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-message-func-t" title="hb_buffer_message_func_t ()"><span class="type">hb_buffer_message_func_t</span></a> func</code></em>,
2312                             <em class="parameter"><code><span class="type">void</span> *user_data</code></em>,
2313                             <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>
2314 <div class="refsect3">
2315 <a name="id-1.3.3.5.12.52.4"></a><h4>Parameters</h4>
2316 <div class="informaltable"><table width="100%" border="0">
2317 <colgroup>
2318 <col width="150px" class="parameters_name">
2319 <col class="parameters_description">
2320 <col width="200px" class="parameters_annotations">
2321 </colgroup>
2322 <tbody>
2323 <tr>
2324 <td class="parameter_name"><p>buffer</p></td>
2325 <td class="parameter_description"><p>an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>.</p></td>
2326 <td class="parameter_annotations"> </td>
2327 </tr>
2328 <tr>
2329 <td class="parameter_name"><p>func</p></td>
2330 <td class="parameter_description"><p>. </p></td>
2331 <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>
2332 </tr>
2333 </tbody>
2334 </table></div>
2335 </div>
2336 <p class="since">Since 1.1.3</p>
2337 </div>
2338 <hr>
2339 <div class="refsect2">
2340 <a name="hb-buffer-message-func-t"></a><h3>hb_buffer_message_func_t ()</h3>
2341 <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>
2342 <span class="c_punctuation">(</span>*hb_buffer_message_func_t<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
2343                              <em class="parameter"><code><a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> *font</code></em>,
2344                              <em class="parameter"><code>const <span class="type">char</span> *message</code></em>,
2345                              <em class="parameter"><code><span class="type">void</span> *user_data</code></em>);</pre>
2346 </div>
2347 </div>
2348 <div class="refsect1">
2349 <a name="harfbuzz-Buffers.other_details"></a><h2>Types and Values</h2>
2350 <div class="refsect2">
2351 <a name="HB-SEGMENT-PROPERTIES-DEFAULT:CAPS"></a><h3>HB_SEGMENT_PROPERTIES_DEFAULT</h3>
2352 <pre class="programlisting">#define             HB_SEGMENT_PROPERTIES_DEFAULT</pre>
2353 </div>
2354 <hr>
2355 <div class="refsect2">
2356 <a name="HB-BUFFER-REPLACEMENT-CODEPOINT-DEFAULT:CAPS"></a><h3>HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT</h3>
2357 <pre class="programlisting">#define HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT 0xFFFDu
2358 </pre>
2359 <p>The default code point for replacing invalid characters in a given encoding.
2360 Set to U+FFFD REPLACEMENT CHARACTER.</p>
2361 <p class="since">Since 0.9.31</p>
2362 </div>
2363 <hr>
2364 <div class="refsect2">
2365 <a name="hb-buffer-t"></a><h3>hb_buffer_t</h3>
2366 <pre class="programlisting">typedef struct hb_buffer_t hb_buffer_t;
2367 </pre>
2368 <p>The main structure holding the input text and its properties before shaping,
2369 and output glyphs and their information after shaping.</p>
2370 </div>
2371 <hr>
2372 <div class="refsect2">
2373 <a name="hb-glyph-info-t-struct"></a><h3>hb_glyph_info_t</h3>
2374 <pre class="programlisting">typedef struct {
2375   hb_codepoint_t codepoint;
2376   hb_mask_t      mask;
2377   uint32_t       cluster;
2378 } hb_glyph_info_t;
2379 </pre>
2380 <p>The <a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="type">hb_glyph_info_t</span></a> is the structure that holds information about the
2381 glyphs and their relation to input text.</p>
2382 <div class="refsect3">
2383 <a name="id-1.3.3.5.13.5.5"></a><h4>Members</h4>
2384 <div class="informaltable"><table width="100%" border="0">
2385 <colgroup>
2386 <col width="300px" class="struct_members_name">
2387 <col class="struct_members_description">
2388 <col width="200px" class="struct_members_annotations">
2389 </colgroup>
2390 <tbody>
2391 <tr>
2392 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-codepoint-t" title="hb_codepoint_t"><span class="type">hb_codepoint_t</span></a> <em class="structfield"><code><a name="hb-glyph-info-t-struct.codepoint"></a>codepoint</code></em>;</p></td>
2393 <td class="struct_member_description"><p>either a Unicode code point (before shaping) or a glyph index
2394 (after shaping).</p></td>
2395 <td class="struct_member_annotations"> </td>
2396 </tr>
2397 <tr>
2398 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-mask-t" title="hb_mask_t"><span class="type">hb_mask_t</span></a> <em class="structfield"><code><a name="hb-glyph-info-t-struct.mask"></a>mask</code></em>;</p></td>
2399 <td class="struct_member_description"> </td>
2400 <td class="struct_member_annotations"> </td>
2401 </tr>
2402 <tr>
2403 <td class="struct_member_name"><p><span class="type">uint32_t</span> <em class="structfield"><code><a name="hb-glyph-info-t-struct.cluster"></a>cluster</code></em>;</p></td>
2404 <td class="struct_member_description"><p>the index of the character in the original text that corresponds
2405 to this <a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="type">hb_glyph_info_t</span></a>, or whatever the client passes to
2406 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-add" title="hb_buffer_add ()"><code class="function">hb_buffer_add()</code></a>. More than one <a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="type">hb_glyph_info_t</span></a> can have the same
2407 <em class="parameter"><code>cluster</code></em>
2408 value, if they resulted from the same character (e.g. one
2409 to many glyph substitution), and when more than one character gets
2410 merged in the same glyph (e.g. many to one glyph substitution) the
2411 <a class="link" href="harfbuzz-Buffers.html#hb-glyph-info-t"><span class="type">hb_glyph_info_t</span></a> will have the smallest cluster value of them.
2412 By default some characters are merged into the same cluster
2413 (e.g. combining marks have the same cluster as their bases)
2414 even if they are separate glyphs, <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-cluster-level" title="hb_buffer_set_cluster_level ()"><code class="function">hb_buffer_set_cluster_level()</code></a>
2415 allow selecting more fine-grained cluster handling.</p></td>
2416 <td class="struct_member_annotations"> </td>
2417 </tr>
2418 </tbody>
2419 </table></div>
2420 </div>
2421 </div>
2422 <hr>
2423 <div class="refsect2">
2424 <a name="hb-glyph-position-t-struct"></a><h3>hb_glyph_position_t</h3>
2425 <pre class="programlisting">typedef struct {
2426   hb_position_t  x_advance;
2427   hb_position_t  y_advance;
2428   hb_position_t  x_offset;
2429   hb_position_t  y_offset;
2430 } hb_glyph_position_t;
2431 </pre>
2432 <p>The <a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t"><span class="type">hb_glyph_position_t</span></a> is the structure that holds the positions of the
2433 glyph in both horizontal and vertical directions. All positions in
2434 <a class="link" href="harfbuzz-Buffers.html#hb-glyph-position-t"><span class="type">hb_glyph_position_t</span></a> are relative to the current point.</p>
2435 <div class="refsect3">
2436 <a name="id-1.3.3.5.13.6.5"></a><h4>Members</h4>
2437 <div class="informaltable"><table width="100%" border="0">
2438 <colgroup>
2439 <col width="300px" class="struct_members_name">
2440 <col class="struct_members_description">
2441 <col width="200px" class="struct_members_annotations">
2442 </colgroup>
2443 <tbody>
2444 <tr>
2445 <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-position-t-struct.x-advance"></a>x_advance</code></em>;</p></td>
2446 <td class="struct_member_description"><p>how much the line advances after drawing this glyph when setting
2447 text in horizontal direction.</p></td>
2448 <td class="struct_member_annotations"> </td>
2449 </tr>
2450 <tr>
2451 <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-position-t-struct.y-advance"></a>y_advance</code></em>;</p></td>
2452 <td class="struct_member_description"><p>how much the line advances after drawing this glyph when setting
2453 text in vertical direction.</p></td>
2454 <td class="struct_member_annotations"> </td>
2455 </tr>
2456 <tr>
2457 <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-position-t-struct.x-offset"></a>x_offset</code></em>;</p></td>
2458 <td class="struct_member_description"><p>how much the glyph moves on the X-axis before drawing it, this
2459 should not affect how much the line advances.</p></td>
2460 <td class="struct_member_annotations"> </td>
2461 </tr>
2462 <tr>
2463 <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-position-t-struct.y-offset"></a>y_offset</code></em>;</p></td>
2464 <td class="struct_member_description"><p>how much the glyph moves on the Y-axis before drawing it, this
2465 should not affect how much the line advances.</p></td>
2466 <td class="struct_member_annotations"> </td>
2467 </tr>
2468 </tbody>
2469 </table></div>
2470 </div>
2471 </div>
2472 <hr>
2473 <div class="refsect2">
2474 <a name="hb-buffer-content-type-t"></a><h3>enum hb_buffer_content_type_t</h3>
2475 <div class="refsect3">
2476 <a name="id-1.3.3.5.13.7.3"></a><h4>Members</h4>
2477 <div class="informaltable"><table width="100%" border="0">
2478 <colgroup>
2479 <col width="300px" class="enum_members_name">
2480 <col class="enum_members_description">
2481 <col width="200px" class="enum_members_annotations">
2482 </colgroup>
2483 <tbody>
2484 <tr>
2485 <td class="enum_member_name"><p><a name="HB-BUFFER-CONTENT-TYPE-INVALID:CAPS"></a>HB_BUFFER_CONTENT_TYPE_INVALID</p></td>
2486 <td class="enum_member_description">
2487 <p>Initial value for new buffer.</p>
2488 </td>
2489 <td class="enum_member_annotations"> </td>
2490 </tr>
2491 <tr>
2492 <td class="enum_member_name"><p><a name="HB-BUFFER-CONTENT-TYPE-UNICODE:CAPS"></a>HB_BUFFER_CONTENT_TYPE_UNICODE</p></td>
2493 <td class="enum_member_description">
2494 <p>The buffer contains input characters (before shaping).</p>
2495 </td>
2496 <td class="enum_member_annotations"> </td>
2497 </tr>
2498 <tr>
2499 <td class="enum_member_name"><p><a name="HB-BUFFER-CONTENT-TYPE-GLYPHS:CAPS"></a>HB_BUFFER_CONTENT_TYPE_GLYPHS</p></td>
2500 <td class="enum_member_description">
2501 <p>The buffer contains output glyphs (after shaping).</p>
2502 </td>
2503 <td class="enum_member_annotations"> </td>
2504 </tr>
2505 </tbody>
2506 </table></div>
2507 </div>
2508 </div>
2509 <hr>
2510 <div class="refsect2">
2511 <a name="hb-buffer-flags-t"></a><h3>enum hb_buffer_flags_t</h3>
2512 <div class="refsect3">
2513 <a name="id-1.3.3.5.13.8.3"></a><h4>Members</h4>
2514 <div class="informaltable"><table width="100%" border="0">
2515 <colgroup>
2516 <col width="300px" class="enum_members_name">
2517 <col class="enum_members_description">
2518 <col width="200px" class="enum_members_annotations">
2519 </colgroup>
2520 <tbody>
2521 <tr>
2522 <td class="enum_member_name"><p><a name="HB-BUFFER-FLAG-DEFAULT:CAPS"></a>HB_BUFFER_FLAG_DEFAULT</p></td>
2523 <td class="enum_member_description">
2524 <p>the default buffer flag.</p>
2525 </td>
2526 <td class="enum_member_annotations"> </td>
2527 </tr>
2528 <tr>
2529 <td class="enum_member_name"><p><a name="HB-BUFFER-FLAG-BOT:CAPS"></a>HB_BUFFER_FLAG_BOT</p></td>
2530 <td class="enum_member_description">
2531 <p>flag indicating that special handling of the beginning
2532                      of text paragraph can be applied to this buffer. Should usually
2533                      be set, unless you are passing to the buffer only part
2534                      of the text without the full context.</p>
2535 </td>
2536 <td class="enum_member_annotations"> </td>
2537 </tr>
2538 <tr>
2539 <td class="enum_member_name"><p><a name="HB-BUFFER-FLAG-EOT:CAPS"></a>HB_BUFFER_FLAG_EOT</p></td>
2540 <td class="enum_member_description">
2541 <p>flag indicating that special handling of the end of text
2542                      paragraph can be applied to this buffer, similar to
2543                      <em class="parameter"><code>HB_BUFFER_FLAG_EOT</code></em>
2544 .</p>
2545 </td>
2546 <td class="enum_member_annotations"> </td>
2547 </tr>
2548 <tr>
2549 <td class="enum_member_name"><p><a name="HB-BUFFER-FLAG-PRESERVE-DEFAULT-IGNORABLES:CAPS"></a>HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES</p></td>
2550 <td class="enum_member_description">
2551 <p>                     flag indication that character with Default_Ignorable
2552                      Unicode property should use the corresponding glyph
2553                      from the font, instead of hiding them (currently done
2554                      by replacing them with the space glyph and zeroing the
2555                      advance width.)</p>
2556 </td>
2557 <td class="enum_member_annotations"> </td>
2558 </tr>
2559 </tbody>
2560 </table></div>
2561 </div>
2562 <p class="since">Since 0.9.20</p>
2563 </div>
2564 <hr>
2565 <div class="refsect2">
2566 <a name="hb-buffer-cluster-level-t"></a><h3>enum hb_buffer_cluster_level_t</h3>
2567 <div class="refsect3">
2568 <a name="id-1.3.3.5.13.9.3"></a><h4>Members</h4>
2569 <div class="informaltable"><table width="100%" border="0">
2570 <colgroup>
2571 <col width="300px" class="enum_members_name">
2572 <col class="enum_members_description">
2573 <col width="200px" class="enum_members_annotations">
2574 </colgroup>
2575 <tbody>
2576 <tr>
2577 <td class="enum_member_name"><p><a name="HB-BUFFER-CLUSTER-LEVEL-MONOTONE-GRAPHEMES:CAPS"></a>HB_BUFFER_CLUSTER_LEVEL_MONOTONE_GRAPHEMES</p></td>
2578 <td> </td>
2579 <td> </td>
2580 </tr>
2581 <tr>
2582 <td class="enum_member_name"><p><a name="HB-BUFFER-CLUSTER-LEVEL-MONOTONE-CHARACTERS:CAPS"></a>HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS</p></td>
2583 <td> </td>
2584 <td> </td>
2585 </tr>
2586 <tr>
2587 <td class="enum_member_name"><p><a name="HB-BUFFER-CLUSTER-LEVEL-CHARACTERS:CAPS"></a>HB_BUFFER_CLUSTER_LEVEL_CHARACTERS</p></td>
2588 <td> </td>
2589 <td> </td>
2590 </tr>
2591 <tr>
2592 <td class="enum_member_name"><p><a name="HB-BUFFER-CLUSTER-LEVEL-DEFAULT:CAPS"></a>HB_BUFFER_CLUSTER_LEVEL_DEFAULT</p></td>
2593 <td> </td>
2594 <td> </td>
2595 </tr>
2596 </tbody>
2597 </table></div>
2598 </div>
2599 </div>
2600 <hr>
2601 <div class="refsect2">
2602 <a name="hb-segment-properties-t-struct"></a><h3>hb_segment_properties_t</h3>
2603 <pre class="programlisting">typedef struct {
2604   hb_direction_t  direction;
2605   hb_script_t     script;
2606   hb_language_t   language;
2607 } hb_segment_properties_t;
2608 </pre>
2609 <p>The structure that holds various text properties of an <a class="link" href="harfbuzz-Buffers.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a>. Can be
2610 set and retrieved using <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-segment-properties" title="hb_buffer_set_segment_properties ()"><code class="function">hb_buffer_set_segment_properties()</code></a> and
2611 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-get-segment-properties" title="hb_buffer_get_segment_properties ()"><code class="function">hb_buffer_get_segment_properties()</code></a>, respectively.</p>
2612 <div class="refsect3">
2613 <a name="id-1.3.3.5.13.10.5"></a><h4>Members</h4>
2614 <div class="informaltable"><table width="100%" border="0">
2615 <colgroup>
2616 <col width="300px" class="struct_members_name">
2617 <col class="struct_members_description">
2618 <col width="200px" class="struct_members_annotations">
2619 </colgroup>
2620 <tbody>
2621 <tr>
2622 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> <em class="structfield"><code><a name="hb-segment-properties-t-struct.direction"></a>direction</code></em>;</p></td>
2623 <td class="struct_member_description"><p>the <a class="link" href="harfbuzz-hb-common.html#hb-direction-t" title="enum hb_direction_t"><span class="type">hb_direction_t</span></a> of the buffer, see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-direction" title="hb_buffer_set_direction ()"><code class="function">hb_buffer_set_direction()</code></a>.</p></td>
2624 <td class="struct_member_annotations"> </td>
2625 </tr>
2626 <tr>
2627 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> <em class="structfield"><code><a name="hb-segment-properties-t-struct.script"></a>script</code></em>;</p></td>
2628 <td class="struct_member_description"><p>the <a class="link" href="harfbuzz-hb-common.html#hb-script-t" title="enum hb_script_t"><span class="type">hb_script_t</span></a> of the buffer, see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-script" title="hb_buffer_set_script ()"><code class="function">hb_buffer_set_script()</code></a>.</p></td>
2629 <td class="struct_member_annotations"> </td>
2630 </tr>
2631 <tr>
2632 <td class="struct_member_name"><p><a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> <em class="structfield"><code><a name="hb-segment-properties-t-struct.language"></a>language</code></em>;</p></td>
2633 <td class="struct_member_description"><p>the <a class="link" href="harfbuzz-hb-common.html#hb-language-t" title="hb_language_t"><span class="type">hb_language_t</span></a> of the buffer, see <a class="link" href="harfbuzz-Buffers.html#hb-buffer-set-language" title="hb_buffer_set_language ()"><code class="function">hb_buffer_set_language()</code></a>.</p></td>
2634 <td class="struct_member_annotations"> </td>
2635 </tr>
2636 </tbody>
2637 </table></div>
2638 </div>
2639 </div>
2640 <hr>
2641 <div class="refsect2">
2642 <a name="hb-buffer-serialize-format-t"></a><h3>enum hb_buffer_serialize_format_t</h3>
2643 <p>The buffer serialization and de-serialization format used in
2644 <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-glyphs" title="hb_buffer_serialize_glyphs ()"><code class="function">hb_buffer_serialize_glyphs()</code></a> and <a class="link" href="harfbuzz-Buffers.html#hb-buffer-deserialize-glyphs" title="hb_buffer_deserialize_glyphs ()"><code class="function">hb_buffer_deserialize_glyphs()</code></a>.</p>
2645 <div class="refsect3">
2646 <a name="id-1.3.3.5.13.11.4"></a><h4>Members</h4>
2647 <div class="informaltable"><table width="100%" border="0">
2648 <colgroup>
2649 <col width="300px" class="enum_members_name">
2650 <col class="enum_members_description">
2651 <col width="200px" class="enum_members_annotations">
2652 </colgroup>
2653 <tbody>
2654 <tr>
2655 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FORMAT-TEXT:CAPS"></a>HB_BUFFER_SERIALIZE_FORMAT_TEXT</p></td>
2656 <td class="enum_member_description">
2657 <p>a human-readable, plain text format.</p>
2658 </td>
2659 <td class="enum_member_annotations"> </td>
2660 </tr>
2661 <tr>
2662 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FORMAT-JSON:CAPS"></a>HB_BUFFER_SERIALIZE_FORMAT_JSON</p></td>
2663 <td class="enum_member_description">
2664 <p>a machine-readable JSON format.</p>
2665 </td>
2666 <td class="enum_member_annotations"> </td>
2667 </tr>
2668 <tr>
2669 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FORMAT-INVALID:CAPS"></a>HB_BUFFER_SERIALIZE_FORMAT_INVALID</p></td>
2670 <td class="enum_member_description">
2671 <p>invalid format.</p>
2672 </td>
2673 <td class="enum_member_annotations"> </td>
2674 </tr>
2675 </tbody>
2676 </table></div>
2677 </div>
2678 <p class="since">Since 0.9.2</p>
2679 </div>
2680 <hr>
2681 <div class="refsect2">
2682 <a name="hb-buffer-serialize-flags-t"></a><h3>enum hb_buffer_serialize_flags_t</h3>
2683 <p>Flags that control what glyph information are serialized in <a class="link" href="harfbuzz-Buffers.html#hb-buffer-serialize-glyphs" title="hb_buffer_serialize_glyphs ()"><code class="function">hb_buffer_serialize_glyphs()</code></a>.</p>
2684 <div class="refsect3">
2685 <a name="id-1.3.3.5.13.12.4"></a><h4>Members</h4>
2686 <div class="informaltable"><table width="100%" border="0">
2687 <colgroup>
2688 <col width="300px" class="enum_members_name">
2689 <col class="enum_members_description">
2690 <col width="200px" class="enum_members_annotations">
2691 </colgroup>
2692 <tbody>
2693 <tr>
2694 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FLAG-DEFAULT:CAPS"></a>HB_BUFFER_SERIALIZE_FLAG_DEFAULT</p></td>
2695 <td class="enum_member_description">
2696 <p>serialize glyph names, clusters and positions.</p>
2697 </td>
2698 <td class="enum_member_annotations"> </td>
2699 </tr>
2700 <tr>
2701 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FLAG-NO-CLUSTERS:CAPS"></a>HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS</p></td>
2702 <td class="enum_member_description">
2703 <p>do not serialize glyph cluster.</p>
2704 </td>
2705 <td class="enum_member_annotations"> </td>
2706 </tr>
2707 <tr>
2708 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FLAG-NO-POSITIONS:CAPS"></a>HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS</p></td>
2709 <td class="enum_member_description">
2710 <p>do not serialize glyph position information.</p>
2711 </td>
2712 <td class="enum_member_annotations"> </td>
2713 </tr>
2714 <tr>
2715 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FLAG-NO-GLYPH-NAMES:CAPS"></a>HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES</p></td>
2716 <td class="enum_member_description">
2717 <p>do no serialize glyph name.</p>
2718 </td>
2719 <td class="enum_member_annotations"> </td>
2720 </tr>
2721 <tr>
2722 <td class="enum_member_name"><p><a name="HB-BUFFER-SERIALIZE-FLAG-GLYPH-EXTENTS:CAPS"></a>HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS</p></td>
2723 <td class="enum_member_description">
2724 <p>serialize glyph extents.</p>
2725 </td>
2726 <td class="enum_member_annotations"> </td>
2727 </tr>
2728 </tbody>
2729 </table></div>
2730 </div>
2731 <p class="since">Since 0.9.20</p>
2732 </div>
2733 </div>
2734 </div>
2735 <div class="footer">
2736 <hr>
2737           Generated by GTK-Doc V1.20</div>
2738 </body>
2739 </html>