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<title>Tumbler QML Type | Qt Quick Extras 5.9</title>
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<td >Qt 5.9</td><td ><a href="qtquickextras-index.html">Qt Quick Extras</a></td><td ><a href="qtquick-extras-qmlmodule.html">QML Types</a></td><td >Tumbler QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.5 Reference Documentation</td>
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<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#methods">Methods</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
<li class="level2"><a href="#limitations">Limitations</a></li>
</ul>
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<h1 class="title">Tumbler QML Type</h1>
<span class="subtitle"></span>
<!-- $$$Tumbler-brief -->
<p>A control that can have several spinnable wheels, each with items that can be selected. <a href="#details">More...</a></p>
<!-- @@@Tumbler -->
<div class="table"><table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQuick.Extras 1.4</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.5</td></tr></table></div><ul>
<li><a href="qml-qtquick-extras-tumbler-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="properties"></a>
<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qtquick-extras-tumbler.html#columnCount-prop">columnCount</a></b></b> : int</li>
</ul>
<a name="methods"></a>
<h2 id="methods">Methods</h2>
<ul>
<li class="fn">TumblerColumn <b><b><a href="qml-qtquick-extras-tumbler.html#addColumn-method">addColumn</a></b></b>(TumblerColumn <i>column</i>)</li>
<li class="fn">int <b><b><a href="qml-qtquick-extras-tumbler.html#currentIndexAt-method">currentIndexAt</a></b></b>(int <i>columnIndex</i>)</li>
<li class="fn">TumblerColumn <b><b><a href="qml-qtquick-extras-tumbler.html#getColumn-method">getColumn</a></b></b>(int <i>columnIndex</i>)</li>
<li class="fn">TumblerColumn <b><b><a href="qml-qtquick-extras-tumbler.html#insertColumn-method">insertColumn</a></b></b>(int <i>index</i>, TumblerColumn <i>column</i>)</li>
<li class="fn">void <b><b><a href="qml-qtquick-extras-tumbler.html#setCurrentIndexAt-method">setCurrentIndexAt</a></b></b>(int <i>columnIndex</i>, int <i>itemIndex</i>, int <i>interval</i>)</li>
</ul>
<!-- $$$Tumbler-description -->
<a name="details"></a>
<h2 id="details">Detailed Description</h2>
<p class="centerAlign"><img src="images/tumbler.png" alt="A Tumbler" /></p><p><b>Note: </b>Tumbler requires Qt 5.5.0 or later.</p><p>The Tumbler control is used with one or more <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a> items, which define the content of each column:</p>
<pre class="cpp">
Tumbler {
TumblerColumn {
model: <span class="number">5</span>
}
TumblerColumn {
model: <span class="operator">[</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">4</span><span class="operator">]</span>
}
TumblerColumn {
model: <span class="operator">[</span><span class="string">"A"</span><span class="operator">,</span> <span class="string">"B"</span><span class="operator">,</span> <span class="string">"C"</span><span class="operator">,</span> <span class="string">"D"</span><span class="operator">,</span> <span class="string">"E"</span><span class="operator">]</span>
}
}
</pre>
<p>You can also use a traditional model with roles:</p>
<pre class="cpp">
Rectangle {
width: <span class="number">220</span>
height: <span class="number">350</span>
color: <span class="string">"#494d53"</span>
ListModel {
id: listModel
ListElement {
foo: <span class="string">"A"</span>
bar: <span class="string">"B"</span>
baz: <span class="string">"C"</span>
}
ListElement {
foo: <span class="string">"A"</span>
bar: <span class="string">"B"</span>
baz: <span class="string">"C"</span>
}
ListElement {
foo: <span class="string">"A"</span>
bar: <span class="string">"B"</span>
baz: <span class="string">"C"</span>
}
}
Tumbler {
anchors<span class="operator">.</span>centerIn: parent
TumblerColumn {
model: listModel
role: <span class="string">"foo"</span>
}
TumblerColumn {
model: listModel
role: <span class="string">"bar"</span>
}
TumblerColumn {
model: listModel
role: <span class="string">"baz"</span>
}
}
}
</pre>
<a name="limitations"></a>
<h2 id="limitations">Limitations</h2>
<p>For technical reasons, the model count must be equal to or greater than visibleItemCount plus one. The visibleItemCount must also be an odd number.</p>
<p>You can create a custom appearance for a Tumbler by assigning a TumblerStyle. To style individual columns, use the <a href="qml-qtquick-extras-tumblercolumn.html#delegate-prop">delegate</a> and <a href="qml-qtquick-extras-tumblercolumn.html#highlight-prop">highlight</a> properties of <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a>.</p>
<!-- @@@Tumbler -->
<h2>Property Documentation</h2>
<!-- $$$columnCount -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="columnCount-prop">
<td class="tblQmlPropNode"><p>
<a name="columnCount-prop"></a><span class="qmlreadonly">[read-only] </span><span class="name">columnCount</span> : <span class="type">int</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>The number of columns in the Tumbler.</p>
</div></div><!-- @@@columnCount -->
<br/>
<h2>Method Documentation</h2>
<!-- $$$addColumn -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="addColumn-method">
<td class="tblQmlFuncNode"><p>
<a name="addColumn-method"></a><span class="type"><a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a></span> <span class="name">addColumn</span>(<span class="type"><a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a></span> <i>column</i>)</p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Adds a <i>column</i> and returns the added column.</p>
<p>The <i>column</i> argument can be an instance of <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a>, or a <a href="../qtqml/qml-qtqml-component.html">Component</a>. The component has to contain a <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a>. Otherwise <code>null</code> is returned.</p>
</div></div><!-- @@@addColumn -->
<br/>
<!-- $$$currentIndexAt -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="currentIndexAt-method">
<td class="tblQmlFuncNode"><p>
<a name="currentIndexAt-method"></a><span class="type">int</span> <span class="name">currentIndexAt</span>(<span class="type">int</span> <i>columnIndex</i>)</p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Returns the current index of the column at <i>columnIndex</i>, or <code>null</code> if the <i>index</i> is invalid.</p>
</div></div><!-- @@@currentIndexAt -->
<br/>
<!-- $$$getColumn -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="getColumn-method">
<td class="tblQmlFuncNode"><p>
<a name="getColumn-method"></a><span class="type"><a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a></span> <span class="name">getColumn</span>(<span class="type">int</span> <i>columnIndex</i>)</p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Returns the column at <i>columnIndex</i> or <code>null</code> if the index is invalid.</p>
</div></div><!-- @@@getColumn -->
<br/>
<!-- $$$insertColumn -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="insertColumn-method">
<td class="tblQmlFuncNode"><p>
<a name="insertColumn-method"></a><span class="type"><a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a></span> <span class="name">insertColumn</span>(<span class="type">int</span> <i>index</i>, <span class="type"><a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a></span> <i>column</i>)</p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Inserts a <i>column</i> at the given <i>index</i> and returns the inserted column.</p>
<p>The <i>column</i> argument can be an instance of <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a>, or a <a href="../qtqml/qml-qtqml-component.html">Component</a>. The component has to contain a <a href="qml-qtquick-extras-tumblercolumn.html">TumblerColumn</a>. Otherwise, <code>null</code> is returned.</p>
</div></div><!-- @@@insertColumn -->
<br/>
<!-- $$$setCurrentIndexAt -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="setCurrentIndexAt-method">
<td class="tblQmlFuncNode"><p>
<a name="setCurrentIndexAt-method"></a><span class="type">void</span> <span class="name">setCurrentIndexAt</span>(<span class="type">int</span> <i>columnIndex</i>, <span class="type">int</span> <i>itemIndex</i>, <span class="type">int</span> <i>interval</i>)</p></td></tr>
</table></div>
</div><div class="qmldoc"><p>Sets the current index of the column at <i>columnIndex</i> to <i>itemIndex</i>. The animation length can be set with <i>interval</i>, which defaults to <code>0</code>.</p>
<p>Does nothing if <i>columnIndex</i> or <i>itemIndex</i> are invalid.</p>
</div></div><!-- @@@setCurrentIndexAt -->
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