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<td >Qt 5.9</td><td ><a href="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-examples.html">Qt Charts Examples</a></td><td >Qml Customizations</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#running-the-example">Running the Example</a></li>
<li class="level1"><a href="#customizing-chart-views">Customizing Chart Views</a></li>
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<h1 class="title">Qml Customizations</h1>
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<p class="centerAlign"><img src="images/examples_qmlcustomizations.png" alt="" /></p><p>This example shows a wheel of fortune by customizing a pie series.</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="customizing-chart-views"></a>
<h2 id="customizing-chart-views">Customizing Chart Views</h2>
<p>First we create the <a href="qml-qtcharts-chartview.html">ChartView</a> and a couple of series.</p>
<pre class="qml">
<span class="type"><a href="qml-qtcharts-chartview.html">ChartView</a></span> {
<span class="name">id</span>: <span class="name">chartView</span>
<span class="name">anchors</span>.fill: <span class="name">parent</span>
<span class="name">title</span>: <span class="string">"Wheel of fortune"</span>
<span class="name">legend</span>.visible: <span class="number">false</span>
<span class="name">antialiasing</span>: <span class="number">true</span>
<span class="type"><a href="qml-qtcharts-pieseries.html">PieSeries</a></span> {
<span class="name">id</span>: <span class="name">wheelOfFortune</span>
<span class="name">horizontalPosition</span>: <span class="number">0.3</span>
}
<span class="type"><a href="qml-qtcharts-splineseries.html">SplineSeries</a></span> {
<span class="name">id</span>: <span class="name">splineSeries</span>
}
<span class="type"><a href="qml-qtcharts-scatterseries.html">ScatterSeries</a></span> {
<span class="name">id</span>: <span class="name">scatterSeries</span>
}
}
</pre>
<p>The application data is generated in Component.onCompleted of the main rectangle:</p>
<pre class="qml">
<span class="name">Component</span>.onCompleted: {
<span class="name">__intervalCoefficient</span> <span class="operator">=</span> <span class="name">Math</span>.<span class="name">random</span>() <span class="operator">+</span> <span class="number">0.25</span>;
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">i</span> = <span class="number">0</span>; <span class="name">i</span> <span class="operator"><</span> <span class="number">20</span>; i++)
<span class="name">wheelOfFortune</span>.<span class="name">append</span>(<span class="string">""</span>, <span class="number">1</span>);
var <span class="name">interval</span> = <span class="number">1</span>;
<span class="keyword">for</span> (<span class="keyword">var</span> <span class="name">j</span> = <span class="number">0</span>; <span class="name">interval</span> <span class="operator"><</span> <span class="number">800</span>; j++) {
<span class="name">interval</span> <span class="operator">=</span> <span class="name">__intervalCoefficient</span> <span class="operator">*</span> <span class="name">j</span> <span class="operator">*</span> <span class="name">j</span>;
<span class="name">splineSeries</span>.<span class="name">append</span>(<span class="name">j</span>, <span class="name">interval</span>);
}
<span class="name">chartView</span>.<span class="name">axisX</span>(<span class="name">scatterSeries</span>).<span class="name">max</span> <span class="operator">=</span> <span class="name">j</span>;
<span class="name">chartView</span>.<span class="name">axisY</span>(<span class="name">scatterSeries</span>).<span class="name">max</span> <span class="operator">=</span> <span class="number">1000</span>;
}
</pre>
<p>The following customizations are done repeatedly with a timer. To highlight one of the pie slices at time we modify its exploded property:</p>
<pre class="qml">
<span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">exploded</span> <span class="operator">=</span> <span class="number">false</span>;
__activeIndex++;
<span class="name">index</span> <span class="operator">=</span> <span class="name">__activeIndex</span> <span class="operator">%</span> <span class="name">wheelOfFortune</span>.<span class="name">count</span>;
<span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">exploded</span> <span class="operator">=</span> <span class="number">true</span>;
</pre>
<p>Then an animation using a scatter series with one data point:</p>
<pre class="qml">
<span class="name">scatterSeries</span>.<span class="name">clear</span>();
<span class="name">scatterSeries</span>.<span class="name">append</span>(<span class="name">__activeIndex</span>, <span class="name">interval</span>);
<span class="name">scatterSeries</span>.<span class="name">color</span> <span class="operator">=</span> <span class="name">Qt</span>.<span class="name">tint</span>(<span class="name">scatterSeries</span>.<span class="name">color</span>, <span class="string">"#05FF0000"</span>);
<span class="name">scatterSeries</span>.<span class="name">markerSize</span> <span class="operator">+=</span> <span class="number">0.5</span>;
</pre>
<p>When the wheel of fortune has stopped, we make the active slice blink by modifying its colors.</p>
<pre class="qml">
<span class="comment">// Switch the colors of the slice and the border</span>
<span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">borderWidth</span> <span class="operator">=</span> <span class="number">2</span>;
<span class="name">switchColor</span> <span class="operator">=</span> <span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">borderColor</span>;
<span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">borderColor</span> <span class="operator">=</span> <span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">color</span>;
<span class="name">wheelOfFortune</span>.<span class="name">at</span>(<span class="name">index</span>).<span class="name">color</span> <span class="operator">=</span> <span class="name">switchColor</span>;
</pre>
<p>Files:</p>
<ul>
<li><a href="qtcharts-qmlcustomizations-qml-qmlcustomizations-main-qml.html">qmlcustomizations/qml/qmlcustomizations/main.qml</a></li>
<li><a href="qtcharts-qmlcustomizations-main-cpp.html">qmlcustomizations/main.cpp</a></li>
<li><a href="qtcharts-qmlcustomizations-qmlcustomizations-pro.html">qmlcustomizations/qmlcustomizations.pro</a></li>
<li><a href="qtcharts-qmlcustomizations-resources-qrc.html">qmlcustomizations/resources.qrc</a></li>
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media
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core-updates
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19952c5e751bf7e3108c3c59625b0f35
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