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<h2><span class="refentrytitle"><a name="pango-Text-Processing.top_of_page"></a>Rendering</span></h2>
<p>Rendering — Functions to run the rendering pipeline</p>
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<a name="pango-Text-Processing.synopsis"></a><h2>Synopsis</h2>
<a name="PangoContext"></a><a name="PangoItem"></a><pre class="synopsis"> <a class="link" href="pango-Text-Processing.html#PangoContext-struct" title="PangoContext">PangoContext</a>;
struct <a class="link" href="pango-Text-Processing.html#PangoItem-struct" title="struct PangoItem">PangoItem</a>;
struct <a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis">PangoAnalysis</a>;
#define <a class="link" href="pango-Text-Processing.html#PANGO-ANALYSIS-FLAG-CENTERED-BASELINE:CAPS" title="PANGO_ANALYSIS_FLAG_CENTERED_BASELINE">PANGO_ANALYSIS_FLAG_CENTERED_BASELINE</a>
#define <a class="link" href="pango-Text-Processing.html#PANGO-TYPE-DIRECTION:CAPS" title="PANGO_TYPE_DIRECTION">PANGO_TYPE_DIRECTION</a>
<span class="returnvalue">GList</span> * <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()">pango_itemize</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> start_index</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrList"><span class="type">PangoAttrList</span></a> *attrs</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrIterator" title="PangoAttrIterator"><span class="type">PangoAttrIterator</span></a> *cached_iter</code></em>);
<span class="returnvalue">GList</span> * <a class="link" href="pango-Text-Processing.html#pango-itemize-with-base-dir" title="pango_itemize_with_base_dir ()">pango_itemize_with_base_dir</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="type">PangoDirection</span></a> base_dir</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> start_index</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrList"><span class="type">PangoAttrList</span></a> *attrs</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrIterator" title="PangoAttrIterator"><span class="type">PangoAttrIterator</span></a> *cached_iter</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()">pango_item_free</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *item</code></em>);
<a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * <a class="link" href="pango-Text-Processing.html#pango-item-copy" title="pango_item_copy ()">pango_item_copy</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *item</code></em>);
<a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * <a class="link" href="pango-Text-Processing.html#pango-item-new" title="pango_item_new ()">pango_item_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * <a class="link" href="pango-Text-Processing.html#pango-item-split" title="pango_item_split ()">pango_item_split</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *orig</code></em>,
<em class="parameter"><code><span class="type">int</span> split_index</code></em>,
<em class="parameter"><code><span class="type">int</span> split_offset</code></em>);
<span class="returnvalue">GList</span> * <a class="link" href="pango-Text-Processing.html#pango-reorder-items" title="pango_reorder_items ()">pango_reorder_items</a> (<em class="parameter"><code><span class="type">GList</span> *logical_items</code></em>);
<a class="link" href="pango-Text-Processing.html#PangoContext"><span class="returnvalue">PangoContext</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-new" title="pango_context_new ()">pango_context_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-font-map" title="pango_context_set_font_map ()">pango_context_set_font_map</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoFontMap"><span class="type">PangoFontMap</span></a> *font_map</code></em>);
<a class="link" href="pango-Fonts.html#PangoFontMap"><span class="returnvalue">PangoFontMap</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-get-font-map" title="pango_context_get_font_map ()">pango_context_get_font_map</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="returnvalue">PangoFontDescription</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-get-font-description" title="pango_context_get_font_description ()">pango_context_get_font_description</a>
(<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-font-description" title="pango_context_set_font_description ()">pango_context_set_font_description</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>);
<a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="returnvalue">PangoLanguage</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-get-language" title="pango_context_get_language ()">pango_context_get_language</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-language" title="pango_context_set_language ()">pango_context_set_language</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);
<a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="returnvalue">PangoDirection</span></a> <a class="link" href="pango-Text-Processing.html#pango-context-get-base-dir" title="pango_context_get_base_dir ()">pango_context_get_base_dir</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-base-dir" title="pango_context_set_base_dir ()">pango_context_set_base_dir</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="type">PangoDirection</span></a> direction</code></em>);
<a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="returnvalue">PangoGravity</span></a> <a class="link" href="pango-Text-Processing.html#pango-context-get-base-gravity" title="pango_context_get_base_gravity ()">pango_context_get_base_gravity</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-base-gravity" title="pango_context_set_base_gravity ()">pango_context_set_base_gravity</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="type">PangoGravity</span></a> gravity</code></em>);
<a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="returnvalue">PangoGravity</span></a> <a class="link" href="pango-Text-Processing.html#pango-context-get-gravity" title="pango_context_get_gravity ()">pango_context_get_gravity</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<a class="link" href="pango-Vertical-Text.html#PangoGravityHint"><span class="returnvalue">PangoGravityHint</span></a> <a class="link" href="pango-Text-Processing.html#pango-context-get-gravity-hint" title="pango_context_get_gravity_hint ()">pango_context_get_gravity_hint</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-gravity-hint" title="pango_context_set_gravity_hint ()">pango_context_set_gravity_hint</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Vertical-Text.html#PangoGravityHint"><span class="type">PangoGravityHint</span></a> hint</code></em>);
const <a class="link" href="pango-Glyph-Storage.html#PangoMatrix"><span class="returnvalue">PangoMatrix</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-get-matrix" title="pango_context_get_matrix ()">pango_context_get_matrix</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-set-matrix" title="pango_context_set_matrix ()">pango_context_set_matrix</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a> *matrix</code></em>);
<a class="link" href="pango-Fonts.html#PangoFont"><span class="returnvalue">PangoFont</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-load-font" title="pango_context_load_font ()">pango_context_load_font</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>);
<a class="link" href="pango-Fonts.html#PangoFontset"><span class="returnvalue">PangoFontset</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-load-fontset" title="pango_context_load_fontset ()">pango_context_load_fontset</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);
<a class="link" href="pango-Fonts.html#PangoFontMetrics"><span class="returnvalue">PangoFontMetrics</span></a> * <a class="link" href="pango-Text-Processing.html#pango-context-get-metrics" title="pango_context_get_metrics ()">pango_context_get_metrics</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-context-list-families" title="pango_context_list_families ()">pango_context_list_families</a> (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoFontFamily"><span class="type">PangoFontFamily</span></a> ***families</code></em>,
<em class="parameter"><code><span class="type">int</span> *n_families</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-break" title="pango_break ()">pango_break</a> (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-get-log-attrs" title="pango_get_log_attrs ()">pango_get_log_attrs</a> (<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><span class="type">int</span> level</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *log_attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-find-paragraph-boundary" title="pango_find_paragraph_boundary ()">pango_find_paragraph_boundary</a> (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">gint</span> length</code></em>,
<em class="parameter"><code><span class="type">gint</span> *paragraph_delimiter_index</code></em>,
<em class="parameter"><code><span class="type">gint</span> *next_paragraph_start</code></em>);
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-default-break" title="pango_default_break ()">pango_default_break</a> (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);
<a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr">PangoLogAttr</a>;
<span class="returnvalue">void</span> <a class="link" href="pango-Text-Processing.html#pango-shape" title="pango_shape ()">pango_shape</a> (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">gint</span> length</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Glyph-Storage.html#PangoGlyphString"><span class="type">PangoGlyphString</span></a> *glyphs</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="pango-Text-Processing.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GObject
+----PangoContext
</pre>
<pre class="synopsis">
GBoxed
+----PangoItem
</pre>
</div>
<div class="refsect1">
<a name="pango-Text-Processing.description"></a><h2>Description</h2>
<p>
The Pango rendering pipeline takes a string of
Unicode characters and converts it into glyphs.
The functions described in this section accomplish
various steps of this process.
</p>
</div>
<div class="refsect1">
<a name="pango-Text-Processing.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="PangoContext-struct"></a><h3>PangoContext</h3>
<pre class="programlisting">typedef struct _PangoContext PangoContext;</pre>
<p>
The <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> structure stores global information
used to control the itemization process.
</p>
</div>
<hr>
<div class="refsect2">
<a name="PangoItem-struct"></a><h3>struct PangoItem</h3>
<pre class="programlisting">struct PangoItem {
gint offset;
gint length;
gint num_chars;
PangoAnalysis analysis;
};
</pre>
<p>
The <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> structure stores information about
a segment of text. It contains the following fields:
</p>
</div>
<hr>
<div class="refsect2">
<a name="PangoAnalysis"></a><h3>struct PangoAnalysis</h3>
<pre class="programlisting">struct PangoAnalysis {
PangoEngineShape *shape_engine;
PangoEngineLang *lang_engine;
PangoFont *font;
guint8 level;
guint8 gravity; /* PangoGravity */
guint8 flags;
guint8 script; /* PangoScript */
PangoLanguage *language;
GSList *extra_attrs;
};
</pre>
<p>
The <a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> structure stores information about
the properties of a segment of text. It has the following
fields:
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a class="link" href="PangoEngineShape.html" title="PangoEngineShape"><span class="type">PangoEngineShape</span></a> *<em class="structfield"><code><a name="PangoAnalysis.shape-engine"></a>shape_engine</code></em>;</span></p></td>
<td>the engine for doing rendering-system-dependent processing.</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="PangoEngineLang.html" title="PangoEngineLang"><span class="type">PangoEngineLang</span></a> *<em class="structfield"><code><a name="PangoAnalysis.lang-engine"></a>lang_engine</code></em>;</span></p></td>
<td>the engine for doing rendering-system-independent processing.</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="pango-Fonts.html#PangoFont"><span class="type">PangoFont</span></a> *<em class="structfield"><code><a name="PangoAnalysis.font"></a>font</code></em>;</span></p></td>
<td>the font for this segment.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint8</span> <em class="structfield"><code><a name="PangoAnalysis.level"></a>level</code></em>;</span></p></td>
<td>the bidirectional level for this segment.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint8</span> <em class="structfield"><code><a name="PangoAnalysis.gravity"></a>gravity</code></em>;</span></p></td>
<td>the glyph orientation for this segment (A <a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="type">PangoGravity</span></a>).</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint8</span> <em class="structfield"><code><a name="PangoAnalysis.flags"></a>flags</code></em>;</span></p></td>
<td>boolean flags for this segment (currently only one) (Since: 1.16).</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint8</span> <em class="structfield"><code><a name="PangoAnalysis.script"></a>script</code></em>;</span></p></td>
<td>the detected script for this segment (A <a class="link" href="pango-Scripts-and-Languages.html#PangoScript"><span class="type">PangoScript</span></a>) (Since: 1.18).</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *<em class="structfield"><code><a name="PangoAnalysis.language"></a>language</code></em>;</span></p></td>
<td>the detected language for this segment.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">GSList</span> *<em class="structfield"><code><a name="PangoAnalysis.extra-attrs"></a>extra_attrs</code></em>;</span></p></td>
<td>extra attributes for this segment.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="PANGO-ANALYSIS-FLAG-CENTERED-BASELINE:CAPS"></a><h3>PANGO_ANALYSIS_FLAG_CENTERED_BASELINE</h3>
<pre class="programlisting">#define PANGO_ANALYSIS_FLAG_CENTERED_BASELINE (1 << 0)
</pre>
<p>
Whether the segment should be shifted to center around the baseline.
Used in vertical writing directions mostly.
Since: 1.16
</p>
</div>
<hr>
<div class="refsect2">
<a name="PANGO-TYPE-DIRECTION:CAPS"></a><h3>PANGO_TYPE_DIRECTION</h3>
<pre class="programlisting">#define PANGO_TYPE_DIRECTION (pango_direction_get_type())
</pre>
<p>
The <span class="type">GObject</span> type for <a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="type">PangoDirection</span></a>.
</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-itemize"></a><h3>pango_itemize ()</h3>
<pre class="programlisting"><span class="returnvalue">GList</span> * pango_itemize (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> start_index</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrList"><span class="type">PangoAttrList</span></a> *attrs</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrIterator" title="PangoAttrIterator"><span class="type">PangoAttrIterator</span></a> *cached_iter</code></em>);</pre>
<p>
Breaks a piece of text into segments with consistent
directional level and shaping engine. Each byte of <em class="parameter"><code>text</code></em> will
be contained in exactly one of the items in the returned list;
the generated list of items will be in logical order (the start
offsets of the items are ascending).
</p>
<p>
<em class="parameter"><code>cached_iter</code></em> should be an iterator over <em class="parameter"><code>attrs</code></em> currently positioned at a
range before or containing <em class="parameter"><code>start_index</code></em>; <em class="parameter"><code>cached_iter</code></em> will be advanced to
the range covering the position just after <em class="parameter"><code>start_index</code></em> + <em class="parameter"><code>length</code></em>.
(i.e. if itemizing in a loop, just keep passing in the same <em class="parameter"><code>cached_iter</code></em>).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a structure holding information that affects
the itemization process.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>the text to itemize.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>start_index</code></em> :</span></p></td>
<td>first byte in <em class="parameter"><code>text</code></em> to process</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>the number of bytes (not characters) to process
after <em class="parameter"><code>start_index</code></em>.
This must be >= 0.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs</code></em> :</span></p></td>
<td>the set of attributes that apply to <em class="parameter"><code>text</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cached_iter</code></em> :</span></p></td>
<td>Cached attribute iterator, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <span class="type">GList</span> of <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>
structures. The items should be freed using <a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()"><code class="function">pango_item_free()</code></a>
probably in combination with <code class="function">g_list_foreach()</code>, and the list itself
using <code class="function">g_list_free()</code>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Pango.Item]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-itemize-with-base-dir"></a><h3>pango_itemize_with_base_dir ()</h3>
<pre class="programlisting"><span class="returnvalue">GList</span> * pango_itemize_with_base_dir (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="type">PangoDirection</span></a> base_dir</code></em>,
<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> start_index</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrList"><span class="type">PangoAttrList</span></a> *attrs</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Attributes.html#PangoAttrIterator" title="PangoAttrIterator"><span class="type">PangoAttrIterator</span></a> *cached_iter</code></em>);</pre>
<p>
Like <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>, but the base direction to use when
computing bidirectional levels (see <a class="link" href="pango-Text-Processing.html#pango-context-set-base-dir" title="pango_context_set_base_dir ()"><code class="function">pango_context_set_base_dir()</code></a>),
is specified explicitly rather than gotten from the <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a structure holding information that affects
the itemization process.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>base_dir</code></em> :</span></p></td>
<td>base direction to use for bidirectional processing</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>the text to itemize.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>start_index</code></em> :</span></p></td>
<td>first byte in <em class="parameter"><code>text</code></em> to process</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>the number of bytes (not characters) to process
after <em class="parameter"><code>start_index</code></em>. This must be >= 0.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs</code></em> :</span></p></td>
<td>the set of attributes that apply to <em class="parameter"><code>text</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>cached_iter</code></em> :</span></p></td>
<td>Cached attribute iterator, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a>. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <span class="type">GList</span> of
<a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> structures. The items should be freed using
<a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()"><code class="function">pango_item_free()</code></a> probably in combination with
<code class="function">g_list_foreach()</code>, and the list itself using <code class="function">g_list_free()</code>. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Pango.Item]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.4</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-item-free"></a><h3>pango_item_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_item_free (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *item</code></em>);</pre>
<p>
Free a <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> and all associated memory.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>item</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>, may be <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-item-copy"></a><h3>pango_item_copy ()</h3>
<pre class="programlisting"><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * pango_item_copy (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *item</code></em>);</pre>
<p>
Copy an existing <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> structure.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>item</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>, may be <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly allocated <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>, which should
be freed with <a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()"><code class="function">pango_item_free()</code></a>, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> if
<em class="parameter"><code>item</code></em> was NULL.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-item-new"></a><h3>pango_item_new ()</h3>
<pre class="programlisting"><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * pango_item_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Creates a new <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> structure initialized to default values.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly allocated <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>, which should
be freed with <a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()"><code class="function">pango_item_free()</code></a>.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-item-split"></a><h3>pango_item_split ()</h3>
<pre class="programlisting"><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="returnvalue">PangoItem</span></a> * pango_item_split (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> *orig</code></em>,
<em class="parameter"><code><span class="type">int</span> split_index</code></em>,
<em class="parameter"><code><span class="type">int</span> split_offset</code></em>);</pre>
<p>
Modifies <em class="parameter"><code>orig</code></em> to cover only the text after <em class="parameter"><code>split_index</code></em>, and
returns a new item that covers the text before <em class="parameter"><code>split_index</code></em> that
used to be in <em class="parameter"><code>orig</code></em>. You can think of <em class="parameter"><code>split_index</code></em> as the length of
the returned item. <em class="parameter"><code>split_index</code></em> may not be 0, and it may not be
greater than or equal to the length of <em class="parameter"><code>orig</code></em> (that is, there must
be at least one byte assigned to each item, you can't create a
zero-length item). <em class="parameter"><code>split_offset</code></em> is the length of the first item in
chars, and must be provided because the text used to generate the
item isn't available, so <a class="link" href="pango-Text-Processing.html#pango-item-split" title="pango_item_split ()"><code class="function">pango_item_split()</code></a> can't count the char
length of the split items itself.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>orig</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>split_index</code></em> :</span></p></td>
<td>byte index of position to split item, relative to the start of the item</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>split_offset</code></em> :</span></p></td>
<td>number of chars between start of <em class="parameter"><code>orig</code></em> and <em class="parameter"><code>split_index</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>new item representing text before <em class="parameter"><code>split_index</code></em>, which
should be freed with <a class="link" href="pango-Text-Processing.html#pango-item-free" title="pango_item_free ()"><code class="function">pango_item_free()</code></a>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-reorder-items"></a><h3>pango_reorder_items ()</h3>
<pre class="programlisting"><span class="returnvalue">GList</span> * pango_reorder_items (<em class="parameter"><code><span class="type">GList</span> *logical_items</code></em>);</pre>
<p>
From a list of items in logical order and the associated
directional levels, produce a list in visual order.
The original list is unmodified.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>logical_items</code></em> :</span></p></td>
<td>a <span class="type">GList</span> of <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> in logical order.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <span class="type">GList</span>
of <a class="link" href="pango-Text-Processing.html#PangoItem"><span class="type">PangoItem</span></a> structures in visual order.
(Please open a bug if you use this function.
It is not a particularly convenient interface, and the code
is duplicated elsewhere in Pango for that reason.). <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Pango.Item]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-new"></a><h3>pango_context_new ()</h3>
<pre class="programlisting"><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="returnvalue">PangoContext</span></a> * pango_context_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Creates a new <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> initialized to default values.
</p>
<p>
This function is not particularly useful as it should always
be followed by a <a class="link" href="pango-Text-Processing.html#pango-context-set-font-map" title="pango_context_set_font_map ()"><code class="function">pango_context_set_font_map()</code></a> call, and the
function <a class="link" href="pango-Fonts.html#pango-font-map-create-context" title="pango_font_map_create_context ()"><code class="function">pango_font_map_create_context()</code></a> does these two steps
together and hence users are recommended to use that.
</p>
<p>
If you are using Pango as part of a higher-level system,
that system may have it's own way of create a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>.
For instance, the GTK+ toolkit has, among others,
<a href="http://library.gnome.org/devel/gdk3/gdk-Pango-Interaction.html#gdk-pango-context-get-for-screen"><code class="function">gdk_pango_context_get_for_screen()</code></a>, and
<a href="http://library.gnome.org/devel/gtk3/GtkWidget.html#gtk-widget-get-pango-context"><code class="function">gtk_widget_get_pango_context()</code></a>. Use those instead.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly allocated <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>, which should
be freed with <code class="function">g_object_unref()</code>.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-font-map"></a><h3>pango_context_set_font_map ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_font_map (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoFontMap"><span class="type">PangoFontMap</span></a> *font_map</code></em>);</pre>
<p>
Sets the font map to be searched when fonts are looked-up in this context.
This is only for internal use by Pango backends, a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> obtained
via one of the recommended methods should already have a suitable font map.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>font_map</code></em> :</span></p></td>
<td>the <a class="link" href="pango-Fonts.html#PangoFontMap"><span class="type">PangoFontMap</span></a> to set.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-font-map"></a><h3>pango_context_get_font_map ()</h3>
<pre class="programlisting"><a class="link" href="pango-Fonts.html#PangoFontMap"><span class="returnvalue">PangoFontMap</span></a> * pango_context_get_font_map (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Gets the <span class="type">PangoFontmap</span> used to look up fonts for this context.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the font map for the <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>.
This value is owned by Pango and should not be unreferenced. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-font-description"></a><h3>pango_context_get_font_description ()</h3>
<pre class="programlisting"><a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="returnvalue">PangoFontDescription</span></a> * pango_context_get_font_description
(<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieve the default font description for the context.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a pointer to the context's default font
description. This value must not be modified or freed. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-font-description"></a><h3>pango_context_set_font_description ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_font_description (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>);</pre>
<p>
Set the default font description for the context
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>desc</code></em> :</span></p></td>
<td>the new pango font description</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-language"></a><h3>pango_context_get_language ()</h3>
<pre class="programlisting"><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="returnvalue">PangoLanguage</span></a> * pango_context_get_language (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the global language tag for the context.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the global language tag.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-language"></a><h3>pango_context_set_language ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_language (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);</pre>
<p>
Sets the global language tag for the context. The default language
for the locale of the running process can be found using
<a class="link" href="pango-Scripts-and-Languages.html#pango-language-get-default" title="pango_language_get_default ()"><code class="function">pango_language_get_default()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>language</code></em> :</span></p></td>
<td>the new language tag.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-base-dir"></a><h3>pango_context_get_base_dir ()</h3>
<pre class="programlisting"><a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="returnvalue">PangoDirection</span></a> pango_context_get_base_dir (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the base direction for the context. See
<a class="link" href="pango-Text-Processing.html#pango-context-set-base-dir" title="pango_context_set_base_dir ()"><code class="function">pango_context_set_base_dir()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the base direction for the context.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-base-dir"></a><h3>pango_context_set_base_dir ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_base_dir (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Bidirectional-Text.html#PangoDirection"><span class="type">PangoDirection</span></a> direction</code></em>);</pre>
<p>
Sets the base direction for the context.
</p>
<p>
The base direction is used in applying the Unicode bidirectional
algorithm; if the <em class="parameter"><code>direction</code></em> is <a class="link" href="pango-Bidirectional-Text.html#PANGO-DIRECTION-LTR:CAPS"><code class="literal">PANGO_DIRECTION_LTR</code></a> or
<a class="link" href="pango-Bidirectional-Text.html#PANGO-DIRECTION-RTL:CAPS"><code class="literal">PANGO_DIRECTION_RTL</code></a>, then the value will be used as the paragraph
direction in the Unicode bidirectional algorithm. A value of
<a class="link" href="pango-Bidirectional-Text.html#PANGO-DIRECTION-WEAK-LTR:CAPS"><code class="literal">PANGO_DIRECTION_WEAK_LTR</code></a> or <a class="link" href="pango-Bidirectional-Text.html#PANGO-DIRECTION-WEAK-RTL:CAPS"><code class="literal">PANGO_DIRECTION_WEAK_RTL</code></a> is used only
for paragraphs that do not contain any strong characters themselves.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>direction</code></em> :</span></p></td>
<td>the new base direction</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-base-gravity"></a><h3>pango_context_get_base_gravity ()</h3>
<pre class="programlisting"><a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="returnvalue">PangoGravity</span></a> pango_context_get_base_gravity (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the base gravity for the context. See
<a class="link" href="pango-Text-Processing.html#pango-context-set-base-gravity" title="pango_context_set_base_gravity ()"><code class="function">pango_context_set_base_gravity()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the base gravity for the context.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-base-gravity"></a><h3>pango_context_set_base_gravity ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_base_gravity (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="type">PangoGravity</span></a> gravity</code></em>);</pre>
<p>
Sets the base gravity for the context.
</p>
<p>
The base gravity is used in laying vertical text out.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>gravity</code></em> :</span></p></td>
<td>the new base gravity</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-gravity"></a><h3>pango_context_get_gravity ()</h3>
<pre class="programlisting"><a class="link" href="pango-Vertical-Text.html#PangoGravity"><span class="returnvalue">PangoGravity</span></a> pango_context_get_gravity (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the gravity for the context. This is similar to
<a class="link" href="pango-Text-Processing.html#pango-context-get-base-gravity" title="pango_context_get_base_gravity ()"><code class="function">pango_context_get_base_gravity()</code></a>, except for when the base gravity
is <a class="link" href="pango-Vertical-Text.html#PANGO-GRAVITY-AUTO:CAPS"><code class="literal">PANGO_GRAVITY_AUTO</code></a> for which <a class="link" href="pango-Vertical-Text.html#pango-gravity-get-for-matrix" title="pango_gravity_get_for_matrix ()"><code class="function">pango_gravity_get_for_matrix()</code></a> is used
to return the gravity from the current context matrix.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the resolved gravity for the context.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-gravity-hint"></a><h3>pango_context_get_gravity_hint ()</h3>
<pre class="programlisting"><a class="link" href="pango-Vertical-Text.html#PangoGravityHint"><span class="returnvalue">PangoGravityHint</span></a> pango_context_get_gravity_hint (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Retrieves the gravity hint for the context. See
<a class="link" href="pango-Text-Processing.html#pango-context-set-gravity-hint" title="pango_context_set_gravity_hint ()"><code class="function">pango_context_set_gravity_hint()</code></a> for details.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the gravity hint for the context.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-gravity-hint"></a><h3>pango_context_set_gravity_hint ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_gravity_hint (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Vertical-Text.html#PangoGravityHint"><span class="type">PangoGravityHint</span></a> hint</code></em>);</pre>
<p>
Sets the gravity hint for the context.
</p>
<p>
The gravity hint is used in laying vertical text out, and is only relevant
if gravity of the context as returned by <a class="link" href="pango-Text-Processing.html#pango-context-get-gravity" title="pango_context_get_gravity ()"><code class="function">pango_context_get_gravity()</code></a>
is set <a class="link" href="pango-Vertical-Text.html#PANGO-GRAVITY-EAST:CAPS"><code class="literal">PANGO_GRAVITY_EAST</code></a> or <a class="link" href="pango-Vertical-Text.html#PANGO-GRAVITY-WEST:CAPS"><code class="literal">PANGO_GRAVITY_WEST</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>hint</code></em> :</span></p></td>
<td>the new gravity hint</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.16</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-matrix"></a><h3>pango_context_get_matrix ()</h3>
<pre class="programlisting">const <a class="link" href="pango-Glyph-Storage.html#PangoMatrix"><span class="returnvalue">PangoMatrix</span></a> * pango_context_get_matrix (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>);</pre>
<p>
Gets the transformation matrix that will be applied when
rendering with this context. See <a class="link" href="pango-Text-Processing.html#pango-context-set-matrix" title="pango_context_set_matrix ()"><code class="function">pango_context_set_matrix()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the matrix, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> if no matrix has been set
(which is the same as the identity matrix). The returned
matrix is owned by Pango and must not be modified or
freed.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-set-matrix"></a><h3>pango_context_set_matrix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_set_matrix (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a> *matrix</code></em>);</pre>
<p>
Sets the transformation matrix that will be applied when rendering
with this context. Note that reported metrics are in the user space
coordinates before the application of the matrix, not device-space
coordinates after the application of the matrix. So, they don't scale
with the matrix, though they may change slightly for different
matrices, depending on how the text is fit to the pixel grid.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>matrix</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Glyph-Storage.html#PangoMatrix"><span class="type">PangoMatrix</span></a>, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> to unset any existing
matrix. (No matrix set is the same as setting the identity matrix.). <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.6</p>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-load-font"></a><h3>pango_context_load_font ()</h3>
<pre class="programlisting"><a class="link" href="pango-Fonts.html#PangoFont"><span class="returnvalue">PangoFont</span></a> * pango_context_load_font (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>);</pre>
<p>
Loads the font in one of the fontmaps in the context
that is the closest match for <em class="parameter"><code>desc</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>desc</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> describing the font to load</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly allocated <a class="link" href="pango-Fonts.html#PangoFont"><span class="type">PangoFont</span></a> that
was loaded, or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> if no font matched. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-load-fontset"></a><h3>pango_context_load_fontset ()</h3>
<pre class="programlisting"><a class="link" href="pango-Fonts.html#PangoFontset"><span class="returnvalue">PangoFontset</span></a> * pango_context_load_fontset (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);</pre>
<p>
Load a set of fonts in the context that can be used to render
a font matching <em class="parameter"><code>desc</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>desc</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> describing the fonts to load</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>language</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> the fonts will be used for</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly allocated <a class="link" href="pango-Fonts.html#PangoFontset"><span class="type">PangoFontset</span></a> loaded,
or <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> if no font matched. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-get-metrics"></a><h3>pango_context_get_metrics ()</h3>
<pre class="programlisting"><a class="link" href="pango-Fonts.html#PangoFontMetrics"><span class="returnvalue">PangoFontMetrics</span></a> * pango_context_get_metrics (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> *desc</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>);</pre>
<p>
Get overall metric information for a particular font
description. Since the metrics may be substantially different for
different scripts, a language tag can be provided to indicate that
the metrics should be retrieved that correspond to the script(s)
used by that language.
</p>
<p>
The <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> is interpreted in the same way as
by <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>, and the family name may be a comma separated
list of figures. If characters from multiple of these families
would be used to render the string, then the returned fonts would
be a composite of the metrics for the fonts loaded for the
individual families.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>desc</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Fonts.html#PangoFontDescription"><span class="type">PangoFontDescription</span></a> structure. <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> means that the
font description from the context will be used. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>language</code></em> :</span></p></td>
<td>language tag used to determine which script to get
the metrics for. <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a> means that the language tag from the context
will be used. If no language tag is set on the context, metrics
for the default language (as determined by <a class="link" href="pango-Scripts-and-Languages.html#pango-language-get-default" title="pango_language_get_default ()"><code class="function">pango_language_get_default()</code></a>)
will be returned. <span class="annotation">[<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="pango-Fonts.html#PangoFontMetrics"><span class="type">PangoFontMetrics</span></a> object. The caller must call <a class="link" href="pango-Fonts.html#pango-font-metrics-unref" title="pango_font_metrics_unref ()"><code class="function">pango_font_metrics_unref()</code></a>
when finished using the object.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-context-list-families"></a><h3>pango_context_list_families ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_context_list_families (<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a> *context</code></em>,
<em class="parameter"><code><a class="link" href="pango-Fonts.html#PangoFontFamily"><span class="type">PangoFontFamily</span></a> ***families</code></em>,
<em class="parameter"><code><span class="type">int</span> *n_families</code></em>);</pre>
<p>
List all families for a context.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>context</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoContext"><span class="type">PangoContext</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>families</code></em> :</span></p></td>
<td>location to store a pointer to
an array of <a class="link" href="pango-Fonts.html#PangoFontFamily"><span class="type">PangoFontFamily</span></a> *. This array should be freed
with <code class="function">g_free()</code>. <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=n_families]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>n_families</code></em> :</span></p></td>
<td>location to store the number of elements in <em class="parameter"><code>descs</code></em>. <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>
<hr>
<div class="refsect2">
<a name="pango-break"></a><h3>pango_break ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_break (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);</pre>
<p>
Determines possible line, word, and character breaks
for a string of Unicode text with a single analysis. For most
purposes you may want to use <a class="link" href="pango-Text-Processing.html#pango-get-log-attrs" title="pango_get_log_attrs ()"><code class="function">pango_get_log_attrs()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>the text to process</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>text</code></em> in bytes (may be -1 if <em class="parameter"><code>text</code></em> is nul-terminated)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>analysis</code></em> :</span></p></td>
<td>
<a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> structure from <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs</code></em> :</span></p></td>
<td>an array to store character information in</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs_len</code></em> :</span></p></td>
<td>size of the array passed as <em class="parameter"><code>attrs</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-get-log-attrs"></a><h3>pango_get_log_attrs ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_get_log_attrs (<em class="parameter"><code>const <span class="type">char</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><span class="type">int</span> level</code></em>,
<em class="parameter"><code><a class="link" href="pango-Scripts-and-Languages.html#PangoLanguage"><span class="type">PangoLanguage</span></a> *language</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *log_attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);</pre>
<p>
Computes a <a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> for each character in <em class="parameter"><code>text</code></em>. The <em class="parameter"><code>log_attrs</code></em>
array must have one <a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> for each position in <em class="parameter"><code>text</code></em>; if
<em class="parameter"><code>text</code></em> contains N characters, it has N+1 positions, including the
last position at the end of the text. <em class="parameter"><code>text</code></em> should be an entire
paragraph; logical attributes can't be computed without context
(for example you need to see spaces on either side of a word to know
the word is a word).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>text to process</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length in bytes of <em class="parameter"><code>text</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>level</code></em> :</span></p></td>
<td>embedding level, or -1 if unknown</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>language</code></em> :</span></p></td>
<td>language tag</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>log_attrs</code></em> :</span></p></td>
<td>array with one <a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> per character in <em class="parameter"><code>text</code></em>, plus one extra, to be filled in</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs_len</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>log_attrs</code></em> array</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-find-paragraph-boundary"></a><h3>pango_find_paragraph_boundary ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_find_paragraph_boundary (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">gint</span> length</code></em>,
<em class="parameter"><code><span class="type">gint</span> *paragraph_delimiter_index</code></em>,
<em class="parameter"><code><span class="type">gint</span> *next_paragraph_start</code></em>);</pre>
<p>
Locates a paragraph boundary in <em class="parameter"><code>text</code></em>. A boundary is caused by
delimiter characters, such as a newline, carriage return, carriage
return-newline pair, or Unicode paragraph separator character. The
index of the run of delimiters is returned in
<em class="parameter"><code>paragraph_delimiter_index</code></em>. The index of the start of the paragraph
(index after all delimiters) is stored in <em class="parameter"><code>next_paragraph_start</code></em>.
</p>
<p>
If no delimiters are found, both <em class="parameter"><code>paragraph_delimiter_index</code></em> and
<em class="parameter"><code>next_paragraph_start</code></em> are filled with the length of <em class="parameter"><code>text</code></em> (an index one
off the end).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>UTF-8 text</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length of <em class="parameter"><code>text</code></em> in bytes, or -1 if nul-terminated</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>paragraph_delimiter_index</code></em> :</span></p></td>
<td>return location for index of delimiter</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>next_paragraph_start</code></em> :</span></p></td>
<td>return location for start of next paragraph</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-default-break"></a><h3>pango_default_break ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_default_break (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">int</span> length</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> *attrs</code></em>,
<em class="parameter"><code><span class="type">int</span> attrs_len</code></em>);</pre>
<p>
This is the default break algorithm, used if no language
engine overrides it. Normally you should use <a class="link" href="pango-Text-Processing.html#pango-break" title="pango_break ()"><code class="function">pango_break()</code></a>
instead. Unlike <a class="link" href="pango-Text-Processing.html#pango-break" title="pango_break ()"><code class="function">pango_break()</code></a>,
<em class="parameter"><code>analysis</code></em> can be <a href="/home/mclasen/gnome/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL--CAPS"><code class="literal">NULL</code></a>, but only do that if you know what
you're doing. If you need an analysis to pass to <a class="link" href="pango-Text-Processing.html#pango-break" title="pango_break ()"><code class="function">pango_break()</code></a>,
you need to <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>. In most cases however you should
simply use <a class="link" href="pango-Text-Processing.html#pango-get-log-attrs" title="pango_get_log_attrs ()"><code class="function">pango_get_log_attrs()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>text to break</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>length of text in bytes (may be -1 if <em class="parameter"><code>text</code></em> is nul-terminated)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>analysis</code></em> :</span></p></td>
<td>a <a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> for the <em class="parameter"><code>text</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs</code></em> :</span></p></td>
<td>logical attributes to fill in</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>attrs_len</code></em> :</span></p></td>
<td>size of the array passed as <em class="parameter"><code>attrs</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="PangoLogAttr"></a><h3>PangoLogAttr</h3>
<pre class="programlisting">typedef struct {
guint is_line_break : 1; /* Can break line in front of character */
guint is_mandatory_break : 1; /* Must break line in front of character */
guint is_char_break : 1; /* Can break here when doing char wrap */
guint is_white : 1; /* Whitespace character */
/* Cursor can appear in front of character (i.e. this is a grapheme
* boundary, or the first character in the text).
*/
guint is_cursor_position : 1;
/* Note that in degenerate cases, you could have both start/end set on
* some text, most likely for sentences (e.g. no space after a period, so
* the next sentence starts right away).
*/
guint is_word_start : 1; /* first character in a word */
guint is_word_end : 1; /* is first non-word char after a word */
/* There are two ways to divide sentences. The first assigns all
* intersentence whitespace/control/format chars to some sentence,
* so all chars are in some sentence; is_sentence_boundary denotes
* the boundaries there. The second way doesn't assign
* between-sentence spaces, etc. to any sentence, so
* is_sentence_start/is_sentence_end mark the boundaries of those
* sentences.
*/
guint is_sentence_boundary : 1;
guint is_sentence_start : 1; /* first character in a sentence */
guint is_sentence_end : 1; /* first non-sentence char after a sentence */
/* If set, backspace deletes one character rather than
* the entire grapheme cluster.
*/
guint backspace_deletes_character : 1;
/* Only few space variants (U+0020 and U+00A0) have variable
* width during justification.
*/
guint is_expandable_space : 1;
/* Word boundary as defined by UAX#29 */
guint is_word_boundary : 1; /* is NOT in the middle of a word */
} PangoLogAttr;
</pre>
<p>
The <a class="link" href="pango-Text-Processing.html#PangoLogAttr" title="PangoLogAttr"><span class="type">PangoLogAttr</span></a> structure stores information
about the attributes of a single character.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-line-break"></a>is_line_break</code></em> : 1;</span></p></td>
<td>if set, can break line in front of character</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-mandatory-break"></a>is_mandatory_break</code></em> : 1;</span></p></td>
<td>if set, must break line in front of character</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-char-break"></a>is_char_break</code></em> : 1;</span></p></td>
<td>if set, can break here when doing character wrapping</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-white"></a>is_white</code></em> : 1;</span></p></td>
<td>is whitespace character</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-cursor-position"></a>is_cursor_position</code></em> : 1;</span></p></td>
<td>if set, cursor can appear in front of character.
i.e. this is a grapheme boundary, or the first character
in the text.
This flag implements Unicode's
<a class="ulink" href="http://www.unicode.org/reports/tr29/" target="_top">Grapheme
Cluster Boundaries</a> semantics.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-word-start"></a>is_word_start</code></em> : 1;</span></p></td>
<td>is first character in a word</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-word-end"></a>is_word_end</code></em> : 1;</span></p></td>
<td>is first non-word char after a word
Note that in degenerate cases, you could have both <em class="parameter"><code>is_word_start</code></em>
and <em class="parameter"><code>is_word_end</code></em> set for some character.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-sentence-boundary"></a>is_sentence_boundary</code></em> : 1;</span></p></td>
<td>is a sentence boundary.
There are two ways to divide sentences. The first assigns all
inter-sentence whitespace/control/format chars to some sentence,
so all chars are in some sentence; <em class="parameter"><code>is_sentence_boundary</code></em> denotes
the boundaries there. The second way doesn't assign
between-sentence spaces, etc. to any sentence, so
<em class="parameter"><code>is_sentence_start</code></em>/<em class="parameter"><code>is_sentence_end</code></em> mark the boundaries
of those sentences.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-sentence-start"></a>is_sentence_start</code></em> : 1;</span></p></td>
<td>is first character in a sentence</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-sentence-end"></a>is_sentence_end</code></em> : 1;</span></p></td>
<td>is first char after a sentence.
Note that in degenerate cases, you could have both <em class="parameter"><code>is_sentence_start</code></em>
and <em class="parameter"><code>is_sentence_end</code></em> set for some character. (e.g. no space after a
period, so the next sentence starts right away)</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.backspace-deletes-character"></a>backspace_deletes_character</code></em> : 1;</span></p></td>
<td>if set, backspace deletes one character
rather than the entire grapheme cluster. This
field is only meaningful on grapheme
boundaries (where <em class="parameter"><code>is_cursor_position</code></em> is
set). In some languages, the full grapheme
(e.g. letter + diacritics) is considered a
unit, while in others, each decomposed
character in the grapheme is a unit. In the
default implementation of <a class="link" href="pango-Text-Processing.html#pango-break" title="pango_break ()"><code class="function">pango_break()</code></a>, this
bit is set on all grapheme boundaries except
those following Latin, Cyrillic or Greek base
characters.</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-expandable-space"></a>is_expandable_space</code></em> : 1;</span></p></td>
<td>is a whitespace character that can possibly be
expanded for justification purposes. (Since: 1.18)</td>
</tr>
<tr>
<td><p><span class="term"><span class="type">guint</span> <em class="structfield"><code><a name="PangoLogAttr.is-word-boundary"></a>is_word_boundary</code></em> : 1;</span></p></td>
<td>is a word boundary.
More specifically, means that this is not a position in the middle
of a word. For example, both sides of a punctuation mark are
considered word boundaries. This flag is particularly useful when
selecting text word-by-word.
This flag implements Unicode's
<a class="ulink" href="http://www.unicode.org/reports/tr29/" target="_top">Word
Boundaries</a> semantics.
(Since: 1.22)</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="pango-shape"></a><h3>pango_shape ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> pango_shape (<em class="parameter"><code>const <span class="type">gchar</span> *text</code></em>,
<em class="parameter"><code><span class="type">gint</span> length</code></em>,
<em class="parameter"><code>const <a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> *analysis</code></em>,
<em class="parameter"><code><a class="link" href="pango-Glyph-Storage.html#PangoGlyphString"><span class="type">PangoGlyphString</span></a> *glyphs</code></em>);</pre>
<p>
Given a segment of text and the corresponding
<a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> structure returned from <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>,
convert the characters into glyphs. You may also pass
in only a substring of the item from <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>text</code></em> :</span></p></td>
<td>the text to process</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>length</code></em> :</span></p></td>
<td>the length (in bytes) of <em class="parameter"><code>text</code></em>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>analysis</code></em> :</span></p></td>
<td>
<a class="link" href="pango-Text-Processing.html#PangoAnalysis" title="struct PangoAnalysis"><span class="type">PangoAnalysis</span></a> structure from <a class="link" href="pango-Text-Processing.html#pango-itemize" title="pango_itemize ()"><code class="function">pango_itemize()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>glyphs</code></em> :</span></p></td>
<td>glyph string in which to store results</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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