pango-scripts.html

来自「linux」· HTML 代码 · 共 872 行 · 第 1/3 页

<td> a Unicode character
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the <a href="pango-Scripts.html#PangoScript"><span class="type">PangoScript</span></a> for the character.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3195514"></a><h3>
<a name="pango-script-get-sample-language"></a>pango_script_get_sample_language ()</h3>
<a class="indexterm" name="id3195529"></a><pre class="programlisting"><a href="pango-Text-Attributes.html#PangoLanguage">PangoLanguage</a>*      pango_script_get_sample_language    (<a href="pango-Scripts.html#PangoScript">PangoScript</a> script);</pre>
<p>
Given a script, finds a language tag that is reasonably
representative of that script. This will usually be the
most widely spoken or used language written in that script:
for instance, the sample language for <a href="pango-Scripts.html#PANGO-SCRIPT-CYRILLIC:CAPS"><code class="literal">PANGO_SCRIPT_CYRILLIC</code></a>
is <code class="literal">ru</code> (Russian), the sample language
for <a href="pango-Scripts.html#PANGO-SCRIPT-ARABIC:CAPS"><code class="literal">PANGO_SCRIPT_ARABIC</code></a> is <code class="literal">ar</code>.
</p>
<p>
For some
scripts, no sample language will be returned because there
is no language that is sufficiently representative. The best
example of this is <a href="pango-Scripts.html#PANGO-SCRIPT-HAN:CAPS"><code class="literal">PANGO_SCRIPT_HAN</code></a>, where various different
variants of written Chinese, Japanese, and Korean all use
significantly different sets of Han characters and forms
of shared characters. No sample language can be provided
for many historical scripts as well.
</p>
<p>
As of 1.18, this function checks the environment variables
PANGO_LANGUAGE and LANGUAGE (checked in that order) first.
If one of them is set, it is parsed as a list of language tags
separated by colons or other separators.  This function
will return the first language in the parsed list that Pango
believes may use <em class="parameter"><code>script</code></em> for writing.  This last predicate
is tested using <a href="pango-Scripts.html#pango-language-includes-script"><code class="function">pango_language_includes_script()</code></a>.  This can
be used to control Pango's font selection for non-primary
languages.  For example, a PANGO_LANGUAGE enviroment variable
set to "en:fa" makes Pango choose fonts suitable for Persian (fa) 
instead of Arabic (ar) when a segment of Arabic text is found
in an otherwise non-Arabic text.  The same trick can be used to
choose a default language for <a href="pango-Scripts.html#PANGO-SCRIPT-HAN:CAPS"><code class="literal">PANGO_SCRIPT_HAN</code></a> when setting
context language is not feasible.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>script</code></em>&#160;:</span></td>
<td> a <a href="pango-Scripts.html#PangoScript"><span class="type">PangoScript</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> a <a href="pango-Text-Attributes.html#PangoLanguage"><span class="type">PangoLanguage</span></a> that is representative
of the script, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a> if no such language exists.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3195728"></a><h3>
<a name="pango-language-includes-script"></a>pango_language_includes_script ()</h3>
<a class="indexterm" name="id3195743"></a><pre class="programlisting"><a
href="../glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            pango_language_includes_script      (<a href="pango-Text-Attributes.html#PangoLanguage">PangoLanguage</a> *language,
                                                         <a href="pango-Scripts.html#PangoScript">PangoScript</a> script);</pre>
<p>
Determines if <em class="parameter"><code>script</code></em> is one of the scripts used to
write <em class="parameter"><code>language</code></em>. The returned value is conservative;
if nothing is known about the language tag <em class="parameter"><code>language</code></em>,
<a
href="../glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> will be returned, since, as far as Pango knows,
<em class="parameter"><code>script</code></em> might be used to write <em class="parameter"><code>language</code></em>.
</p>
<p>
This routine is used in Pango's itemization process when
determining if a supplied language tag is relevant to
a particular section of text. It probably is not useful for
applications in most circumstances.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>language</code></em>&#160;:</span></td>
<td> a <a href="pango-Text-Attributes.html#PangoLanguage"><span class="type">PangoLanguage</span></a>, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>script</code></em>&#160;:</span></td>
<td> a <a href="pango-Scripts.html#PangoScript"><span class="type">PangoScript</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> <a
href="../glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if <em class="parameter"><code>script</code></em> is one of the scripts used
to write <em class="parameter"><code>language</code></em> or if nothing is known about <em class="parameter"><code>language</code></em>
(including the case that <em class="parameter"><code>language</code></em> is <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>),
<a
href="../glib/glib-Standard-Macros.html#FALSE:CAPS"
><code class="literal">FALSE</code></a> otherwise.
 
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3195963"></a><h3>
<a name="pango-script-iter-new"></a>pango_script_iter_new ()</h3>
<a class="indexterm" name="id3195979"></a><pre class="programlisting"><a href="pango-Scripts.html#PangoScriptIter">PangoScriptIter</a>*    pango_script_iter_new               (const char *text,
                                                         int length);</pre>
<p>
Create a new <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a>, used to break a string of
Unicode into runs by text. No copy is made of <em class="parameter"><code>text</code></em>, so
the caller needs to make sure it remains valid until
the iterator is freed with <a href="pango-Scripts.html#pango-script-iter-free"><code class="function">pango_script_iter_free()</code></a>.x</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>text</code></em>&#160;:</span></td>
<td> a UTF-8 string
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>length</code></em>&#160;:</span></td>
<td> length of <em class="parameter"><code>text</code></em>, or -1 if <em class="parameter"><code>text</code></em> is nul-terminated.
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the new script iterator, initialized
 to point at the first range in the text, which should be
 freed with <a href="pango-Scripts.html#pango-script-iter-free"><code class="function">pango_script_iter_free()</code></a>. If the string is
 empty, it will point at an empty range.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196121"></a><h3>
<a name="pango-script-iter-get-range"></a>pango_script_iter_get_range ()</h3>
<a class="indexterm" name="id3196137"></a><pre class="programlisting">void                pango_script_iter_get_range         (<a href="pango-Scripts.html#PangoScriptIter">PangoScriptIter</a> *iter,
                                                         G_CONST_RETURN char **start,
                                                         G_CONST_RETURN char **end,
                                                         <a href="pango-Scripts.html#PangoScript">PangoScript</a> *script);</pre>
<p>
Gets information about the range to which <em class="parameter"><code>iter</code></em> currently points.
The range is the set of locations p where *start &lt;= p &lt; *end.
(That is, it doesn't include the character stored at *end)</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>iter</code></em>&#160;:</span></td>
<td> a <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>start</code></em>&#160;:</span></td>
<td> location to store start position of the range, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>end</code></em>&#160;:</span></td>
<td> location to store end position of the range, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>script</code></em>&#160;:</span></td>
<td> location to store script for range, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196307"></a><h3>
<a name="pango-script-iter-next"></a>pango_script_iter_next ()</h3>
<a class="indexterm" name="id3196322"></a><pre class="programlisting"><a
href="../glib/glib-Basic-Types.html#gboolean"
>gboolean</a>            pango_script_iter_next              (<a href="pango-Scripts.html#PangoScriptIter">PangoScriptIter</a> *iter);</pre>
<p>
Advances a <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a> to the next range. If <em class="parameter"><code>iter</code></em>
is already at the end, it is left unchanged and <a
href="../glib/glib-Standard-Macros.html#FALSE:CAPS"
><code class="literal">FALSE</code></a>
is returned.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>iter</code></em>&#160;:</span></td>
<td> a <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a>
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> <a
href="../glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if <em class="parameter"><code>iter</code></em> was successfully advanced.

</td>
</tr>
</tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3196440"></a><h3>
<a name="pango-script-iter-free"></a>pango_script_iter_free ()</h3>
<a class="indexterm" name="id3196455"></a><pre class="programlisting">void                pango_script_iter_free              (<a href="pango-Scripts.html#PangoScriptIter">PangoScriptIter</a> *iter);</pre>
<p>
Frees a <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a> created with <a href="pango-Scripts.html#pango-script-iter-new"><code class="function">pango_script_iter_new()</code></a>.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><span class="term"><em class="parameter"><code>iter</code></em>&#160;:</span></td>
<td> a <a href="pango-Scripts.html#PangoScriptIter"><span class="type">PangoScriptIter</span></a>
</td>
</tr></tbody>
</table></div>
<p class="since">Since  1.4
</p>
</div>
</div>
</div>
</body>
</html>