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<?xml version="1.0" encoding="UTF-8"?>
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<td >Qt 5.9</td><td ><a href="qtquick-index.html">Qt Quick</a></td><td >Qt Quick Examples - Positioners</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#running-the-example">Running the Example</a></li>
<li class="level1"><a href="#transitions">Transitions</a></li>
<li class="level1"><a href="#attached-properties">Attached Properties</a></li>
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<h1 class="title">Qt Quick Examples - Positioners</h1>
<span class="subtitle"></span>
<!-- $$$positioners-description -->
<div class="descr"> <a name="details"></a>
<p class="centerAlign"><img src="images/qml-positioners-example.png" alt="" /></p><p><i>Positioners</i> is a collection of small QML examples relating to positioners. Each example is a small QML file emphasizing a particular type or feature. For more information, visit <a href="qtquick-positioning-topic.html">Important Concepts In Qt Quick - Positioning</a>.</p>
<a name="running-the-example"></a>
<h2 id="running-the-example">Running the Example</h2>
<p>To run the example from Qt Creator, open the <b>Welcome</b> mode and select the example from <b>Examples</b>. For more information, visit Building and Running an Example.</p>
<a name="transitions"></a>
<h2 id="transitions">Transitions</h2>
<p><i>Transitions</i> shows animated transitions when showing or hiding items in a positioner. It consists of a scene populated with items in a variety of positioners: <a href="qtquick-positioning-layouts.html#column">Column</a>, <a href="qtquick-positioning-layouts.html#row">Row</a>, <a href="qtquick-positioning-layouts.html#grid">Grid</a>, and <a href="qtquick-positioning-layouts.html#flow">Flow</a>. Each positioner has animations described as Transitions.</p>
<pre class="qml">

  <span class="name">move</span>: <span class="name">Transition</span> {
      <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">properties</span>: <span class="string">&quot;x,y&quot;</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">OutBounce</span> }
  }

</pre>
<p>The move transition specifies how items inside a positioner will animate when they are displaced by the appearance or disappearance of other items.</p>
<pre class="qml">

  <span class="name">add</span>: <span class="name">Transition</span> {
      <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">properties</span>: <span class="string">&quot;x,y&quot;</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">OutBounce</span> }
  }

</pre>
<p>The add transition specifies how items will appear when they are added to a positioner.</p>
<pre class="qml">

  <span class="name">populate</span>: <span class="name">Transition</span> {
      <span class="type"><a href="qml-qtquick-numberanimation.html">NumberAnimation</a></span> { <span class="name">properties</span>: <span class="string">&quot;x,y&quot;</span>; <span class="name">from</span>: <span class="number">200</span>; <span class="name">duration</span>: <span class="number">100</span>; <span class="name">easing</span>.type: <span class="name">Easing</span>.<span class="name">OutBounce</span> }
  }

</pre>
<p>The populate transition specifies how items will appear when their parent positioner is first created.</p>
<a name="attached-properties"></a>
<h2 id="attached-properties">Attached Properties</h2>
<p><i>Attached Properties</i> shows how the Positioner attached property can be used to determine where an item is within a positioner.</p>
<pre class="qml">

  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
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        <span class="name">anchors</span>.verticalCenter: <span class="name">parent</span>.<span class="name">verticalCenter</span>
        <span class="name">text</span>: <span class="string">&quot;Index: &quot;</span> <span class="operator">+</span> <span class="name">parent</span>.<span class="name">Positioner</span>.<span class="name">index</span>
        <span class="operator">+</span> (<span class="name">parent</span>.<span class="name">Positioner</span>.<span class="name">isFirstItem</span> ? <span class="string">&quot; (First)&quot;</span> : <span class="string">&quot;&quot;</span>)
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      }
  }

</pre>
<p>Files:</p>
<ul>
<li><a href="qtquick-positioners-positioners-attachedproperties-qml.html">positioners/positioners-attachedproperties.qml</a></li>
<li><a href="qtquick-positioners-positioners-transitions-qml.html">positioners/positioners-transitions.qml</a></li>
<li><a href="qtquick-positioners-positioners-qml.html">positioners/positioners.qml</a></li>
<li><a href="qtquick-positioners-main-cpp.html">positioners/main.cpp</a></li>
<li><a href="qtquick-positioners-positioners-pro.html">positioners/positioners.pro</a></li>
<li><a href="qtquick-positioners-positioners-qmlproject.html">positioners/positioners.qmlproject</a></li>
<li><a href="qtquick-positioners-positioners-qrc.html">positioners/positioners.qrc</a></li>
</ul>
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