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<?xml version="1.0" encoding="UTF-8"?>
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<title>Qt 4.8: highlightranges.qml Example File (declarative/modelviews/listview/highlight/qml/highlight/highlightranges.qml)</title>
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<h1 class="title">highlightranges.qml Example File</h1>
<span class="small-subtitle">declarative/modelviews/listview/highlight/qml/highlight/highlightranges.qml</span>
<!-- $$$declarative/modelviews/listview/highlight/qml/highlight/highlightranges.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
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** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
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** $QT_END_LICENSE$
**
****************************************************************************/</span>
import QtQuick 1.0
import "content"
<span class="type"><a href="qml-rectangle.html">Rectangle</a></span> {
<span class="name">id</span>: <span class="name">root</span>
property <span class="type">int</span> <span class="name">current</span>: <span class="number">0</span>
<span class="name">width</span>: <span class="number">600</span>; <span class="name">height</span>: <span class="number">300</span>
<span class="comment">// This example shows the same model in three different ListView items,</span>
<span class="comment">// with different highlight ranges. The highlight ranges are set by the</span>
<span class="comment">// preferredHighlightBegin and preferredHighlightEnd properties in ListView.</span>
//
<span class="comment">// The first ListView does not set a highlight range, so its currentItem</span>
<span class="comment">// can move freely within the visible area. If it moves outside the</span>
<span class="comment">// visible area, the view is automatically scrolled to keep the current</span>
<span class="comment">// item visible.</span>
//
<span class="comment">// The second ListView sets a highlight range which attempts to keep the</span>
<span class="comment">// current item within the the bounds of the range. However,</span>
<span class="comment">// items will not scroll beyond the beginning or end of the view,</span>
<span class="comment">// forcing the highlight to move outside the range at the ends.</span>
//
<span class="comment">// The third ListView sets the highlightRangeMode to StrictlyEnforceRange</span>
<span class="comment">// and sets a range smaller than the height of an item. This</span>
<span class="comment">// forces the current item to change when the view is flicked,</span>
<span class="comment">// since the highlight is unable to move.</span>
//
<span class="comment">// All ListViews bind their currentIndex to the root.current property.</span>
<span class="comment">// The first ListView sets root.current whenever its currentIndex changes</span>
<span class="comment">// due to keyboard interaction.</span>
<span class="comment">// Flicking the third ListView with the mouse also changes root.current.</span>
<span class="type"><a href="qml-listview.html">ListView</a></span> {
<span class="name">id</span>: <span class="name">list1</span>
<span class="name">width</span>: <span class="number">200</span>; <span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span>
<span class="name">model</span>: <span class="name">PetsModel</span> {}
<span class="name">delegate</span>: <span class="name">petDelegate</span>
<span class="name">highlight</span>: <span class="name">Rectangle</span> { <span class="name">color</span>: <span class="string">"lightsteelblue"</span> }
<span class="name">currentIndex</span>: <span class="name">root</span>.<span class="name">current</span>
<span class="name">onCurrentIndexChanged</span>: <span class="name">root</span>.<span class="name">current</span> <span class="operator">=</span> <span class="name">currentIndex</span>
<span class="name">focus</span>: <span class="number">true</span>
}
<span class="type"><a href="qml-listview.html">ListView</a></span> {
<span class="name">id</span>: <span class="name">list2</span>
<span class="name">x</span>: <span class="name">list1</span>.<span class="name">width</span>
<span class="name">width</span>: <span class="number">200</span>; <span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span>
<span class="name">model</span>: <span class="name">PetsModel</span> {}
<span class="name">delegate</span>: <span class="name">petDelegate</span>
<span class="name">highlight</span>: <span class="name">Rectangle</span> { <span class="name">color</span>: <span class="string">"yellow"</span> }
<span class="name">currentIndex</span>: <span class="name">root</span>.<span class="name">current</span>
<span class="name">preferredHighlightBegin</span>: <span class="number">80</span>; <span class="name">preferredHighlightEnd</span>: <span class="number">220</span>
<span class="name">highlightRangeMode</span>: <span class="name">ListView</span>.<span class="name">ApplyRange</span>
}
<span class="type"><a href="qml-listview.html">ListView</a></span> {
<span class="name">id</span>: <span class="name">list3</span>
<span class="name">x</span>: <span class="name">list1</span>.<span class="name">width</span> <span class="operator">+</span> <span class="name">list2</span>.<span class="name">width</span>
<span class="name">width</span>: <span class="number">200</span>; <span class="name">height</span>: <span class="name">parent</span>.<span class="name">height</span>
<span class="name">model</span>: <span class="name">PetsModel</span> {}
<span class="name">delegate</span>: <span class="name">petDelegate</span>
<span class="name">highlight</span>: <span class="name">Rectangle</span> { <span class="name">color</span>: <span class="string">"yellow"</span> }
<span class="name">currentIndex</span>: <span class="name">root</span>.<span class="name">current</span>
<span class="name">onCurrentIndexChanged</span>: <span class="name">root</span>.<span class="name">current</span> <span class="operator">=</span> <span class="name">currentIndex</span>
<span class="name">preferredHighlightBegin</span>: <span class="number">125</span>; <span class="name">preferredHighlightEnd</span>: <span class="number">125</span>
<span class="name">highlightRangeMode</span>: <span class="name">ListView</span>.<span class="name">StrictlyEnforceRange</span>
}
<span class="comment">// The delegate for each list</span>
<span class="type"><a href="qml-component.html">Component</a></span> {
<span class="name">id</span>: <span class="name">petDelegate</span>
<span class="type"><a href="qml-column.html">Column</a></span> {
<span class="name">width</span>: <span class="number">200</span>
<span class="type"><a href="qml-text.html">Text</a></span> { <span class="name">text</span>: <span class="string">'Name: '</span> <span class="operator">+</span> <span class="name">name</span> }
<span class="type"><a href="qml-text.html">Text</a></span> { <span class="name">text</span>: <span class="string">'Type: '</span> <span class="operator">+</span> <span class="name">type</span> }
<span class="type"><a href="qml-text.html">Text</a></span> { <span class="name">text</span>: <span class="string">'Age: '</span> <span class="operator">+</span> <span class="name">age</span> }
}
}
}</pre>
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