/usr/share/gtk-doc/html/harfbuzz/harfbuzz-Shaping.html is in libharfbuzz-doc 1.0.1-1ubuntu0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Shaping: HarfBuzz Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="HarfBuzz Reference Manual">
<link rel="up" href="ch01.html" title="[Insert title here]">
<link rel="prev" href="harfbuzz-hb-font.html" title="hb-font">
<link rel="next" href="harfbuzz-hb-version.html" title="hb-version">
<meta name="generator" content="GTK-Doc V1.25 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span>
<a href="#harfbuzz-Shaping.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
<a href="#harfbuzz-Shaping.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
</td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="harfbuzz-hb-font.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="harfbuzz-hb-version.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="harfbuzz-Shaping"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="harfbuzz-Shaping.top_of_page"></a>Shaping</span></h2>
<p>Shaping — Conversion of text strings into positioned glyphs</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="harfbuzz-Shaping.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-Shaping.html#hb-feature-from-string" title="hb_feature_from_string ()">hb_feature_from_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-Shaping.html#hb-feature-to-string" title="hb_feature_to_string ()">hb_feature_to_string</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-Shaping.html#hb-shape" title="hb_shape ()">hb_shape</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
</td>
<td class="function_name">
<a class="link" href="harfbuzz-Shaping.html#hb-shape-full" title="hb_shape_full ()">hb_shape_full</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <span class="returnvalue">char</span> **
</td>
<td class="function_name">
<a class="link" href="harfbuzz-Shaping.html#hb-shape-list-shapers" title="hb_shape_list_shapers ()">hb_shape_list_shapers</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<a name="hb-feature-t"></a><div class="refsect1">
<a name="harfbuzz-Shaping.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody><tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="harfbuzz-Shaping.html#hb-feature-t-struct" title="hb_feature_t">hb_feature_t</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="harfbuzz-Shaping.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> GBoxed
<span class="lineart">╰──</span> hb_feature_t
</pre>
</div>
<div class="refsect1">
<a name="harfbuzz-Shaping.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <hb.h>
</pre>
</div>
<div class="refsect1">
<a name="harfbuzz-Shaping.description"></a><h2>Description</h2>
<p>Shaping is the central operation of HarfBuzz. Shaping operates on buffers,
which are sequences of Unicode characters that use the same font and have
the same text direction, script and language. After shaping the buffer
contains the output glyphs and their positions.</p>
</div>
<div class="refsect1">
<a name="harfbuzz-Shaping.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="hb-feature-from-string"></a><h3>hb_feature_from_string ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
hb_feature_from_string (<em class="parameter"><code>const <span class="type">char</span> *str</code></em>,
<em class="parameter"><code><span class="type">int</span> len</code></em>,
<em class="parameter"><code><a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> *feature</code></em>);</pre>
<p>Parses a string into a <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a>. If <em class="parameter"><code>len</code></em>
is -1 then <em class="parameter"><code>str</code></em>
is
<code class="literal">NULL</code>-terminated.</p>
<div class="refsect3">
<a name="hb-feature-from-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>str</p></td>
<td class="parameter_description"><p> a string to parse. </p></td>
<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>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>length of <em class="parameter"><code>str</code></em>
, or -1 if string is nul-terminated</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p> the <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> to initialize with the parsed values. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-feature-from-string.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if <em class="parameter"><code>str</code></em>
is successfully parsed, <code class="literal">FALSE</code> otherwise</p>
</div>
<p class="since">Since: 0.9.5</p>
</div>
<hr>
<div class="refsect2">
<a name="hb-feature-to-string"></a><h3>hb_feature_to_string ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
hb_feature_to_string (<em class="parameter"><code><a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> *feature</code></em>,
<em class="parameter"><code><span class="type">char</span> *buf</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> size</code></em>);</pre>
<p>Converts a <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> into a <code class="literal">NULL</code>-terminated string in the format
understood by <a class="link" href="harfbuzz-Shaping.html#hb-feature-from-string" title="hb_feature_from_string ()"><code class="function">hb_feature_from_string()</code></a>. The client in responsible for
allocating big enough size for <em class="parameter"><code>buf</code></em>
, 128 bytes is more than enough.</p>
<div class="refsect3">
<a name="hb-feature-to-string.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>feature</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> to convert</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buf</p></td>
<td class="parameter_description"><p> output string. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=size][<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>size</p></td>
<td class="parameter_description"><p>the allocated size of <em class="parameter"><code>buf</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since: 0.9.5</p>
</div>
<hr>
<div class="refsect2">
<a name="hb-shape"></a><h3>hb_shape ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
hb_shape (<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>,
<em class="parameter"><code><a class="link" href="harfbuzz-hb-buffer.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
<em class="parameter"><code>const <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> *features</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> num_features</code></em>);</pre>
<p>Shapes <em class="parameter"><code>buffer</code></em>
using <em class="parameter"><code>font</code></em>
turning its Unicode characters content to
positioned glyphs. If <em class="parameter"><code>features</code></em>
is not <code class="literal">NULL</code>, it will be used to control the
features applied during shaping.</p>
<div class="refsect3">
<a name="hb-shape.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>font</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> to use for shaping</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-buffer.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> to shape</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p> an array of user
specified <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> or <code class="literal">NULL</code>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=num_features][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>num_features</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>features</code></em>
array</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-shape.returns"></a><h4>Returns</h4>
<p> <code class="literal">FALSE</code> if all shapers failed, <code class="literal">TRUE</code> otherwise</p>
</div>
<p class="since">Since: 1.0</p>
</div>
<hr>
<div class="refsect2">
<a name="hb-shape-full"></a><h3>hb_shape_full ()</h3>
<pre class="programlisting"><a class="link" href="harfbuzz-hb-common.html#hb-bool-t" title="hb_bool_t"><span class="returnvalue">hb_bool_t</span></a>
hb_shape_full (<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>,
<em class="parameter"><code><a class="link" href="harfbuzz-hb-buffer.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> *buffer</code></em>,
<em class="parameter"><code>const <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> *features</code></em>,
<em class="parameter"><code>unsigned <span class="type">int</span> num_features</code></em>,
<em class="parameter"><code>const <span class="type">char</span> * const *shaper_list</code></em>);</pre>
<p>See <a class="link" href="harfbuzz-Shaping.html#hb-shape" title="hb_shape ()"><code class="function">hb_shape()</code></a> for details. If <em class="parameter"><code>shaper_list</code></em>
is not <code class="literal">NULL</code>, the specified
shapers will be used in the given order, otherwise the default shapers list
will be used.</p>
<div class="refsect3">
<a name="hb-shape-full.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>font</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-font.html#hb-font-t"><span class="type">hb_font_t</span></a> to use for shaping</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>an <a class="link" href="harfbuzz-hb-buffer.html#hb-buffer-t"><span class="type">hb_buffer_t</span></a> to shape</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>features</p></td>
<td class="parameter_description"><p> an array of user
specified <a class="link" href="harfbuzz-Shaping.html#hb-feature-t"><span class="type">hb_feature_t</span></a> or <code class="literal">NULL</code>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=num_features][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>num_features</p></td>
<td class="parameter_description"><p>the length of <em class="parameter"><code>features</code></em>
array</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>shaper_list</p></td>
<td class="parameter_description"><p> a <code class="literal">NULL</code>-terminated
array of shapers to use or <code class="literal">NULL</code>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> zero-terminated=1][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="hb-shape-full.returns"></a><h4>Returns</h4>
<p> <code class="literal">FALSE</code> if all shapers failed, <code class="literal">TRUE</code> otherwise</p>
</div>
<p class="since">Since: 0.9.2</p>
</div>
<hr>
<div class="refsect2">
<a name="hb-shape-list-shapers"></a><h3>hb_shape_list_shapers ()</h3>
<pre class="programlisting">const <span class="returnvalue">char</span> **
hb_shape_list_shapers (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Retrieves the list of shapers supported by HarfBuzz.</p>
<div class="refsect3">
<a name="hb-shape-list-shapers.returns"></a><h4>Returns</h4>
<p> an array of
constant strings. </p>
<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> zero-terminated=1]</span></p>
</div>
<p class="since">Since: 0.9.2</p>
</div>
</div>
<div class="refsect1">
<a name="harfbuzz-Shaping.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="hb-feature-t-struct"></a><h3>hb_feature_t</h3>
<pre class="programlisting">typedef struct {
hb_tag_t tag;
uint32_t value;
unsigned int start;
unsigned int end;
} hb_feature_t;
</pre>
</div>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.25</div>
</body>
</html>
|