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<a href="#StDrawingArea.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span>
<a href="#StDrawingArea.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals"> <span class="dim">|</span>
<a href="#StDrawingArea.signals" class="shortcut">Signals</a></span>
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<a name="StDrawingArea"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="StDrawingArea.top_of_page"></a>StDrawingArea</span></h2>
<p>StDrawingArea — A dynamically-sized Cairo drawing area</p>
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<td class="gallery_image" valign="top" align="right"></td>
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<div class="refsect1">
<a name="StDrawingArea.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="StDrawingArea.html#st-drawing-area-queue-repaint" title="st_drawing_area_queue_repaint ()">st_drawing_area_queue_repaint</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">cairo_t</span> *
</td>
<td class="function_name">
<a class="link" href="StDrawingArea.html#st-drawing-area-get-context" title="st_drawing_area_get_context ()">st_drawing_area_get_context</a> <span class="c_punctuation">()</span>
</td>
</tr>
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<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="StDrawingArea.html#st-drawing-area-get-surface-size" title="st_drawing_area_get_surface_size ()">st_drawing_area_get_surface_size</a> <span class="c_punctuation">()</span>
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<div class="refsect1">
<a name="StDrawingArea.signals"></a><h2>Signals</h2>
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<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="StDrawingArea.html#StDrawingArea-repaint" title="The “repaint” signal">repaint</a></td>
<td class="signal_flags"><a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="StDrawingArea.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
<span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
<span class="lineart">╰──</span> ClutterActor
<span class="lineart">╰──</span> <a class="link" href="StWidget.html" title="StWidget">StWidget</a>
<span class="lineart">╰──</span> StDrawingArea
</pre>
</div>
<div class="refsect1">
<a name="StDrawingArea.description"></a><h2>Description</h2>
<p><a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a> is similar to <span class="type">ClutterCairoTexture</span> in that
it allows drawing via Cairo; the primary difference is that
it is dynamically sized. To use, connect to the <a class="link" href="StDrawingArea.html#StDrawingArea-repaint" title="The “repaint” signal"><span class="type">“repaint”</span></a>
signal, and inside the signal handler, call
<a class="link" href="StDrawingArea.html#st-drawing-area-get-context" title="st_drawing_area_get_context ()"><code class="function">st_drawing_area_get_context()</code></a> to get the Cairo context to draw to. The
<a class="link" href="StDrawingArea.html#StDrawingArea-repaint" title="The “repaint” signal"><span class="type">“repaint”</span></a> signal will be emitted by default when the area is
resized or the CSS style changes; you can use the
<a class="link" href="StDrawingArea.html#st-drawing-area-queue-repaint" title="st_drawing_area_queue_repaint ()"><code class="function">st_drawing_area_queue_repaint()</code></a> as well.</p>
</div>
<div class="refsect1">
<a name="StDrawingArea.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="st-drawing-area-queue-repaint"></a><h3>st_drawing_area_queue_repaint ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
st_drawing_area_queue_repaint (<em class="parameter"><code><a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a> *area</code></em>);</pre>
<p>Will cause the actor to emit a ::repaint signal before it is next
drawn to the scene. Useful if some parameters for the area being
drawn other than the size or style have changed. Note that
<code class="function">clutter_actor_queue_redraw()</code> will simply result in the same
contents being drawn to the scene again.</p>
<div class="refsect3">
<a name="id-1.2.3.3.7.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>area</p></td>
<td class="parameter_description"><p>the <a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="st-drawing-area-get-context"></a><h3>st_drawing_area_get_context ()</h3>
<pre class="programlisting"><span class="returnvalue">cairo_t</span> *
st_drawing_area_get_context (<em class="parameter"><code><a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a> *area</code></em>);</pre>
<p>Gets the Cairo context to paint to. This function must only be called
from a signal hander for the ::repaint signal.</p>
<div class="refsect3">
<a name="id-1.2.3.3.7.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>area</p></td>
<td class="parameter_description"><p>the <a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.3.3.7.3.6"></a><h4>Returns</h4>
<p> the Cairo context for the paint operation. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="st-drawing-area-get-surface-size"></a><h3>st_drawing_area_get_surface_size ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
st_drawing_area_get_surface_size (<em class="parameter"><code><a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a> *area</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> *width</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> *height</code></em>);</pre>
<p>Gets the size of the cairo surface being painted to, which is equal
to the size of the content area of the widget. This function must
only be called from a signal hander for the ::repaint signal.</p>
<div class="refsect3">
<a name="id-1.2.3.3.7.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>area</p></td>
<td class="parameter_description"><p>the <a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p> location to store the width of the painted area. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p> location to store the height of the painted area. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Parameter for returning results. Default is transfer full."><span class="acronym">out</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="StDrawingArea.other_details"></a><h2>Types and Values</h2>
</div>
<div class="refsect1">
<a name="StDrawingArea.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="StDrawingArea-repaint"></a><h3>The <code class="literal">“repaint”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="StDrawingArea.html" title="StDrawingArea"><span class="type">StDrawingArea</span></a> *stdrawingarea,
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data)</pre>
<p>Flags: <a href="https://developer.gnome.org/gobject/unstable/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
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