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<title>Cairo integration: Clutter Reference Manual</title>
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<h2><span class="refentrytitle"><a name="clutter-Cairo-integration.top_of_page"></a>Cairo integration</span></h2>
<p>Cairo integration — Functions for interoperating with Cairo</p>
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<a name="clutter-Cairo-integration.functions"></a><h2>Functions</h2>
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<col width="150px" class="functions_return">
<col class="functions_name">
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<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="clutter-Cairo-integration.html#CLUTTER-CAIRO-FORMAT-ARGB32:CAPS" title="CLUTTER_CAIRO_FORMAT_ARGB32">CLUTTER_CAIRO_FORMAT_ARGB32</a></td>
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<td class="function_type">
<span class="returnvalue">void</span>
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<td class="function_name">
<a class="link" href="clutter-Cairo-integration.html#clutter-cairo-clear" title="clutter_cairo_clear ()">clutter_cairo_clear</a> <span class="c_punctuation">()</span>
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<td class="function_type">
<span class="returnvalue">void</span>
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<td class="function_name">
<a class="link" href="clutter-Cairo-integration.html#clutter-cairo-set-source-color" title="clutter_cairo_set_source_color ()">clutter_cairo_set_source_color</a> <span class="c_punctuation">()</span>
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<div class="refsect1">
<a name="clutter-Cairo-integration.description"></a><h2>Description</h2>
<p>Clutter provides some utility functions for using Cairo.</p>
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<div class="refsect1">
<a name="clutter-Cairo-integration.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="CLUTTER-CAIRO-FORMAT-ARGB32:CAPS"></a><h3>CLUTTER_CAIRO_FORMAT_ARGB32</h3>
<pre class="programlisting">#define CLUTTER_CAIRO_FORMAT_ARGB32 (COGL_PIXEL_FORMAT_BGRA_8888_PRE)
</pre>
<p>The <span class="type">CoglPixelFormat</span> to be used when uploading image data from
and to a Cairo image surface using <code class="literal">CAIRO_FORMAT_ARGB32</code> and
<code class="literal">CAIRO_FORMAT_RGB24</code> as <span class="type">cairo_format_t</span>.</p>
<p class="since">Since: <a class="link" href="ix11.html#api-index-1.8">1.8</a></p>
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<div class="refsect2">
<a name="clutter-cairo-clear"></a><h3>clutter_cairo_clear ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_cairo_clear (<em class="parameter"><code><span class="type">cairo_t</span> *cr</code></em>);</pre>
<p>Utility function to clear a Cairo context.</p>
<div class="refsect3">
<a name="id-1.7.2.15.5.3.5"></a><h4>Parameters</h4>
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<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
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<td class="parameter_name"><p>cr</p></td>
<td class="parameter_description"><p>a Cairo context</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
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<p class="since">Since: <a class="link" href="ix13.html#api-index-1.12">1.12</a></p>
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<div class="refsect2">
<a name="clutter-cairo-set-source-color"></a><h3>clutter_cairo_set_source_color ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
clutter_cairo_set_source_color (<em class="parameter"><code><span class="type">cairo_t</span> *cr</code></em>,
<em class="parameter"><code>const <a class="link" href="clutter-Colors.html#ClutterColor"><span class="type">ClutterColor</span></a> *color</code></em>);</pre>
<p>Utility function for setting the source color of <em class="parameter"><code>cr</code></em>
using
a <a class="link" href="clutter-Colors.html#ClutterColor"><span class="type">ClutterColor</span></a>. This function is the equivalent of:</p>
<div class="informalexample"><pre class="programlisting">
cairo_set_source_rgba (cr,
color->red / 255.0,
color->green / 255.0,
color->blue / 255.0,
color->alpha / 255.0);
</pre></div>
<p></p>
<div class="refsect3">
<a name="id-1.7.2.15.5.4.7"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
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<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
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<td class="parameter_name"><p>cr</p></td>
<td class="parameter_description"><p>a Cairo context</p></td>
<td class="parameter_annotations"> </td>
</tr>
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<td class="parameter_name"><p>color</p></td>
<td class="parameter_description"><p>a <a class="link" href="clutter-Colors.html#ClutterColor"><span class="type">ClutterColor</span></a></p></td>
<td class="parameter_annotations"> </td>
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</tbody>
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<p class="since">Since: <a class="link" href="ix07.html#api-index-1.0">1.0</a></p>
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<div class="refsect1">
<a name="clutter-Cairo-integration.other_details"></a><h2>Types and Values</h2>
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