pango-opentype-font-handling.html

GTK+-2.0源码之pango-1.15.6.tar.gz

is needed for proper horizontal positioning of right-to-left scripts.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>rtl</code></em>&#160;:</span></td>
<td> <a
href="../glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> for right-to-left text
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2927804"></a><h3>
<a name="pango-ot-buffer-set-zero-width-marks"></a>pango_ot_buffer_set_zero_width_marks ()</h3>
<a class="indexterm" name="id2927820"></a><pre class="programlisting">void        pango_ot_buffer_set_zero_width_marks
                                            (<a href="pango-OpenType-Font-Handling.html#PangoOTBuffer">PangoOTBuffer</a> *buffer,
                                             <a
href="../glib/glib-Basic-Types.html#gboolean"
>gboolean</a> zero_width_marks);</pre>
<p>
Sets whether characters with a mark class should be forced to zero width.
This setting is needed for proper positioning of Arabic accents,
but will produce incorrect results with standard OpenType Indic
fonts.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>zero_width_marks</code></em>&#160;:</span></td>
<td> <a
href="../glib/glib-Standard-Macros.html#TRUE:CAPS"
><code class="literal">TRUE</code></a> if characters with a mark class should
 be forced to zero width.
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.6
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2927919"></a><h3>
<a name="pango-ot-buffer-get-glyphs"></a>pango_ot_buffer_get_glyphs ()</h3>
<a class="indexterm" name="id2927936"></a><pre class="programlisting">void        pango_ot_buffer_get_glyphs      (<a href="pango-OpenType-Font-Handling.html#PangoOTBuffer">PangoOTBuffer</a> *buffer,
                                             <a href="pango-OpenType-Font-Handling.html#PangoOTGlyph">PangoOTGlyph</a> **glyphs,
                                             int *n_glyphs);</pre>
<p>
Gets the glyph array contained in a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>.  The glyphs are
owned by the buffer and should not be freed, and are only valid as long
as buffer is not modified.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>glyphs</code></em>&#160;:</span></td>
<td> location to store the array of glyphs, 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>n_glyphs</code></em>&#160;:</span></td>
<td> location to store the number of glyphs, or <a
href="../glib/glib-Standard-Macros.html#NULL:CAPS"
><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2928072"></a><h3>
<a name="pango-ot-buffer-output"></a>pango_ot_buffer_output ()</h3>
<a class="indexterm" name="id2928088"></a><pre class="programlisting">void        pango_ot_buffer_output          (<a href="pango-OpenType-Font-Handling.html#PangoOTBuffer">PangoOTBuffer</a> *buffer,
                                             <a href="pango-Glyph-Storage.html#PangoGlyphString">PangoGlyphString</a> *glyphs);</pre>
<p>
Exports the glyphs in a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a> into a <a href="pango-Glyph-Storage.html#PangoGlyphString"><span class="type">PangoGlyphString</span></a>.  This is
typically used after the OpenType layout processing is over, to convert the
resulting glyphs into a generic Pango glyph string.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>glyphs</code></em>&#160;:</span></td>
<td> a <a href="pango-Glyph-Storage.html#PangoGlyphString"><span class="type">PangoGlyphString</span></a>
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2928199"></a><h3>
<a name="pango-ot-ruleset-new"></a>pango_ot_ruleset_new ()</h3>
<a class="indexterm" name="id2928213"></a><pre class="programlisting"><a href="pango-OpenType-Font-Handling.html#PangoOTRuleset">PangoOTRuleset</a>* pango_ot_ruleset_new        (<a href="pango-OpenType-Font-Handling.html#PangoOTInfo">PangoOTInfo</a> *info);</pre>
<p>
Creates a new <a href="pango-OpenType-Font-Handling.html#PangoOTRuleset"><span class="type">PangoOTRuleset</span></a> for the given OpenType info.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>info</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTInfo"><span class="type">PangoOTInfo</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></td>
<td> the newly allocated <a href="pango-OpenType-Font-Handling.html#PangoOTRuleset"><span class="type">PangoOTRuleset</span></a>, which
              should be freed with <a
href="../gobject/gobject-The-Base-Object-Type.html#g-object-unref"
><code class="function">g_object_unref()</code></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2928309"></a><h3>
<a name="pango-ot-ruleset-add-feature"></a>pango_ot_ruleset_add_feature ()</h3>
<a class="indexterm" name="id2928323"></a><pre class="programlisting">void        pango_ot_ruleset_add_feature    (<a href="pango-OpenType-Font-Handling.html#PangoOTRuleset">PangoOTRuleset</a> *ruleset,
                                             <a href="pango-OpenType-Font-Handling.html#PangoOTTableType">PangoOTTableType</a> table_type,
                                             <a
href="../glib/glib-Basic-Types.html#guint"
>guint</a> feature_index,
                                             <a
href="../glib/glib-Basic-Types.html#gulong"
>gulong</a> property_bit);</pre>
<p>
Adds a feature to the ruleset.</p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>ruleset</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTRuleset"><span class="type">PangoOTRuleset</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>table_type</code></em>&#160;:</span></td>
<td> the table type to add a feature to.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>feature_index</code></em>&#160;:</span></td>
<td> the index of the feature to add.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>property_bit</code></em>&#160;:</span></td>
<td> the property bit to use for this feature. Used to identify
               the glyphs that this feature should be applied to, or
               <a href="pango-OpenType-Font-Handling.html#PANGO-OT-ALL-GLYPHS:CAPS"><code class="literal">PANGO_OT_ALL_GLYPHS</code></a> if it should be applied to all glyphs.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2928462"></a><h3>
<a name="pango-ot-ruleset-substitute"></a>pango_ot_ruleset_substitute ()</h3>
<a class="indexterm" name="id2928477"></a><pre class="programlisting">void        pango_ot_ruleset_substitute     (<a href="pango-OpenType-Font-Handling.html#PangoOTRuleset">PangoOTRuleset</a> *ruleset,
                                             <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer">PangoOTBuffer</a> *buffer);</pre>
<p>
Performs the OpenType GSUB substitution on <em class="parameter"><code>buffer</code></em> using the features
in <em class="parameter"><code>ruleset</code></em></p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>ruleset</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTRuleset"><span class="type">PangoOTRuleset</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>.
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2928580"></a><h3>
<a name="pango-ot-ruleset-position"></a>pango_ot_ruleset_position ()</h3>
<a class="indexterm" name="id2928597"></a><pre class="programlisting">void        pango_ot_ruleset_position       (<a href="pango-OpenType-Font-Handling.html#PangoOTRuleset">PangoOTRuleset</a> *ruleset,
                                             <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer">PangoOTBuffer</a> *buffer);</pre>
<p>
Performs the OpenType GPOS positioning on <em class="parameter"><code>buffer</code></em> using the features
in <em class="parameter"><code>ruleset</code></em></p>
<p>

</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>ruleset</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTRuleset"><span class="type">PangoOTRuleset</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>buffer</code></em>&#160;:</span></td>
<td> a <a href="pango-OpenType-Font-Handling.html#PangoOTBuffer"><span class="type">PangoOTBuffer</span></a>.
</td>
</tr>
</tbody>
</table></div>
<p>Since  1.4
</p>
</div>
</div>
</div>
</body>
</html>