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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#properties">Attached Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">Positioner QML Type</h1>
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<p>Provides attached properties that contain details on where an item exists in a positioner <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQuick 2.5</td></tr></table></div><ul>
<li><a href="qml-qtquick-positioner-members.html">List of all members, including inherited members</a></li>
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<h2 id="attached-properties">Attached Properties</h2>
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<li class="fn"><b><b><a href="qml-qtquick-positioner.html#index-attached-prop">index</a></b></b> : int</li>
<li class="fn"><b><b><a href="qml-qtquick-positioner.html#isFirstItem-attached-prop">isFirstItem</a></b></b> : bool</li>
<li class="fn"><b><b><a href="qml-qtquick-positioner.html#isLastItem-attached-prop">isLastItem</a></b></b> : bool</li>
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<!-- $$$Positioner-description -->
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<h2 id="details">Detailed Description</h2>
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<p>An object of type Positioner is attached to the top-level child item within a Column, Row, Flow or Grid. It provides properties that allow a child item to determine where it exists within the layout of its parent Column, Row, Flow or Grid.</p>
<p>For example, below is a <a href="qtquick-positioning-layouts.html#grid">Grid</a> with 16 child rectangles, as created through a <a href="qml-qtquick-repeater.html">Repeater</a>. Each <a href="qml-qtquick-rectangle.html">Rectangle</a> displays its index in the Grid using <a href="qml-qtquick-positioner.html#index-attached-prop">Positioner.index</a>, and the first item is colored differently by taking <a href="qml-qtquick-positioner.html#isFirstItem-attached-prop">Positioner.isFirstItem</a> into account:</p>
<pre class="cpp">Grid {
Repeater {
model: <span class="number">16</span>
Rectangle {
id: rect
width: <span class="number">30</span>; height: <span class="number">30</span>
border<span class="operator">.</span>width: <span class="number">1</span>
color: Positioner<span class="operator">.</span>isFirstItem <span class="operator">?</span> <span class="string">"yellow"</span> : <span class="string">"lightsteelblue"</span>
Text { text: rect<span class="operator">.</span>Positioner<span class="operator">.</span>index }
}
}
}</pre>
<p class="centerAlign"><img src="images/positioner-example.png" alt="" /></p><!-- @@@Positioner -->
<h2>Attached Property Documentation</h2>
<!-- $$$index -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="index-attached-prop"><td class="tblQmlPropNode"><p><a name="index-attached-prop"></a><span class="name">Positioner.index</span> : <span class="type">int</span></p></td></tr></table></div></div><div class="qmldoc"><p>This property allows the item to determine its index within the positioner.</p>
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<br/>
<!-- $$$isFirstItem -->
<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="isFirstItem-attached-prop"><td class="tblQmlPropNode"><p><a name="isFirstItem-attached-prop"></a><span class="name">Positioner.isFirstItem</span> : <span class="type">bool</span></p></td></tr></table></div></div><div class="qmldoc"><p>These properties allow the item to determine if it is the first or last item in the positioner, respectively.</p>
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<br/>
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<div class="qmlitem"><div class="qmlproto"><div class="table"><table class="qmlname"><tr valign="top" class="odd" id="isLastItem-attached-prop"><td class="tblQmlPropNode"><p><a name="isLastItem-attached-prop"></a><span class="name">Positioner.isLastItem</span> : <span class="type">bool</span></p></td></tr></table></div></div><div class="qmldoc"><p>These properties allow the item to determine if it is the first or last item in the positioner, respectively.</p>
</div></div><!-- @@@isLastItem -->
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