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<a href="#GESTimelineLayer.signals" class="shortcut">Signals</a>
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<div class="refentry">
<a name="GESTimelineLayer"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GESTimelineLayer.top_of_page"></a>GESTimelineLayer</span></h2>
<p>GESTimelineLayer — Non-overlaping sequence of <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a></p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="GESTimelineLayer.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <ges/ges.h>
<a class="link" href="GESTimelineLayer.html#GESTimelineLayer-struct" title="GESTimelineLayer">GESTimelineLayer</a>;
<a class="link" href="GESTimelineLayer.html#GESTimelineLayerClass" title="GESTimelineLayerClass">GESTimelineLayerClass</a>;
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-add-object" title="ges_timeline_layer_add_object ()">ges_timeline_layer_add_object</a> (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object</code></em>);
<a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="returnvalue">GESTimelineLayer</span></a> * <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-new" title="ges_timeline_layer_new ()">ges_timeline_layer_new</a> (<em class="parameter"><code><span class="type">void</span></code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-remove-object" title="ges_timeline_layer_remove_object ()">ges_timeline_layer_remove_object</a> (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object</code></em>);
<span class="returnvalue">void</span> <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-set-priority" title="ges_timeline_layer_set_priority ()">ges_timeline_layer_set_priority</a> (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> priority</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-get-priority" title="ges_timeline_layer_get_priority ()">ges_timeline_layer_get_priority</a> (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * <a class="link" href="GESTimelineLayer.html#ges-timeline-layer-get-objects" title="ges_timeline_layer_get_objects ()">ges_timeline_layer_get_objects</a> (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
+----<a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
+----GESTimelineLayer
+----<a class="link" href="GESSimpleTimelineLayer.html" title="GESSimpleTimelineLayer">GESSimpleTimelineLayer</a>
</pre>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.properties"></a><h2>Properties</h2>
<pre class="synopsis">
"<a class="link" href="GESTimelineLayer.html#GESTimelineLayer--priority" title='The "priority" property'>priority</a>" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write
</pre>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.signals"></a><h2>Signals</h2>
<pre class="synopsis">
"<a class="link" href="GESTimelineLayer.html#GESTimelineLayer-object-added" title='The "object-added" signal'>object-added</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a>
"<a class="link" href="GESTimelineLayer.html#GESTimelineLayer-object-removed" title='The "object-removed" signal'>object-removed</a>" : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a>
</pre>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.description"></a><h2>Description</h2>
<p>
Responsible for the ordering of the various contained TimelineObject(s). A
timeline layer has a "priority" property, which is used to manage the
priorities of individual TimelineObjects. Two layers should not have the
same priority within a given timeline.
</p>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GESTimelineLayer-struct"></a><h3>GESTimelineLayer</h3>
<pre class="programlisting">typedef struct {
GESTimeline *timeline;
} GESTimelineLayer;
</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><a class="link" href="GESTimeline.html" title="GESTimeline"><span class="type">GESTimeline</span></a> *<em class="structfield"><code><a name="GESTimelineLayer-struct.timeline"></a>timeline</code></em>;</span></p></td>
<td>the <a class="link" href="GESTimeline.html" title="GESTimeline"><span class="type">GESTimeline</span></a> where this layer is being used.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GESTimelineLayerClass"></a><h3>GESTimelineLayerClass</h3>
<pre class="programlisting">typedef struct {
/* virtual methods for subclasses */
GList *(*get_objects) (GESTimelineLayer * layer);
} GESTimelineLayerClass;
</pre>
<p>
Subclasses can override the <em class="parameter"><code>get_objects</code></em> if they can provide a more
efficient way of providing the list of contained <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a>(s).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="structfield"><code><a name="GESTimelineLayerClass.get-objects"></a>get_objects</code></em> ()</span></p></td>
<td>method to get the objects contained in the layer</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-add-object"></a><h3>ges_timeline_layer_add_object ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> ges_timeline_layer_add_object (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object</code></em>);</pre>
<p>
Adds the given object to the layer. Sets the object's parent, and thus
takes ownership of the object.
</p>
<p>
An object can only be added to one layer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>a <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> to add. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the object was properly added to the layer, or FALSE
if the <em class="parameter"><code>layer</code></em> refuses to add the object.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-new"></a><h3>ges_timeline_layer_new ()</h3>
<pre class="programlisting"><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="returnvalue">GESTimelineLayer</span></a> * ges_timeline_layer_new (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Creates a new <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>.
</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>A new <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-remove-object"></a><h3>ges_timeline_layer_remove_object ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> ges_timeline_layer_remove_object (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object</code></em>);</pre>
<p>
Removes the given <em class="parameter"><code>object</code></em> from the <em class="parameter"><code>layer</code></em> and unparents it.
Unparenting it means the reference owned by <em class="parameter"><code>layer</code></em> on the <em class="parameter"><code>object</code></em> will be
removed. If you wish to use the <em class="parameter"><code>object</code></em> after this function, make sure you
call <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-ref"><code class="function">g_object_ref()</code></a> before removing it from the <em class="parameter"><code>layer</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>layer</code></em> :</span></p></td>
<td>a <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> to remove</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>TRUE if the object could be removed, FALSE if the layer does
not want to remove the object.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-set-priority"></a><h3>ges_timeline_layer_set_priority ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> ges_timeline_layer_set_priority (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> priority</code></em>);</pre>
<p>
Sets the layer to the given <em class="parameter"><code>priority</code></em>. See the documentation of the
priority property for more information.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>a <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>priority</code></em> :</span></p></td>
<td>the priority to set</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-get-priority"></a><h3>ges_timeline_layer_get_priority ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> ges_timeline_layer_get_priority (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>);</pre>
<p>
Get the priority of <em class="parameter"><code>layer</code></em> within the timeline.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>a <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The priority of the <em class="parameter"><code>layer</code></em> within the timeline.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="ges-timeline-layer-get-objects"></a><h3>ges_timeline_layer_get_objects ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> * ges_timeline_layer_get_objects (<em class="parameter"><code><a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer</code></em>);</pre>
<p>
Get the timeline objects this layer contains.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>a <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of
timeline objects. The user is responsible for
unreffing the contained objects and freeing the list. <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> GESTimelineObject]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GESTimelineLayer--priority"></a><h3>The <code class="literal">"priority"</code> property</h3>
<pre class="programlisting"> "priority" <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> : Read / Write</pre>
<p>
The priority of the layer in the <a class="link" href="GESTimeline.html" title="GESTimeline"><span class="type">GESTimeline</span></a>. 0 is the highest
priority. Conceptually, a <a class="link" href="GESTimeline.html" title="GESTimeline"><span class="type">GESTimeline</span></a> is a stack of GESTimelineLayers,
and the priority of the layer represents its position in the stack. Two
layers should not have the same priority within a given GESTimeline.
</p>
<p>Default value: 0</p>
</div>
</div>
<div class="refsect1">
<a name="GESTimelineLayer.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="GESTimelineLayer-object-added"></a><h3>The <code class="literal">"object-added"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer,
<a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre>
<p>
Will be emitted after the object was added to the layer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> that was added.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GESTimelineLayer-object-removed"></a><h3>The <code class="literal">"object-removed"</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span> user_function (<a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a> *layer,
<a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> *object,
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data) : <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-FIRST:CAPS"><code class="literal">Run First</code></a></pre>
<p>
Will be emitted after the object was removed from the layer.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>layer</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineLayer.html" title="GESTimelineLayer"><span class="type">GESTimelineLayer</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>object</code></em> :</span></p></td>
<td>the <a class="link" href="GESTimelineObject.html" title="GESTimelineObject"><span class="type">GESTimelineObject</span></a> that was removed</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>user data set when the signal handler was connected.</td>
</tr>
</tbody>
</table></div>
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