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<td >Qt 5.12</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>
<span class="subtitle"></span>
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<p>This application shows you how to customize different visual properties of a <a href="qml-qtcharts-chartview.html">ChartView</a> and series.</p>
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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">
ChartView {
id: chartView
anchors.fill: parent
title: "Wheel of fortune"
legend.visible: false
antialiasing: true
PieSeries {
id: wheelOfFortune
horizontalPosition: 0.3
}
SplineSeries {
id: splineSeries
}
ScatterSeries {
id: scatterSeries
}
}
</pre>
<p>The application data is generated in Component.onCompleted of the main rectangle:</p>
<pre class="qml">
Component.onCompleted: {
__intervalCoefficient = Math.random() + 0.25;
for (var i = 0; i < 20; i++)
wheelOfFortune.append("", 1);
var interval = 1;
for (var j = 0; interval < 800; j++) {
interval = __intervalCoefficient * j * j;
splineSeries.append(j, interval);
}
chartView.axisX(scatterSeries).max = j;
chartView.axisY(scatterSeries).max = 1000;
}
</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">
wheelOfFortune.at(index).exploded = false;
__activeIndex++;
index = __activeIndex % wheelOfFortune.count;
wheelOfFortune.at(index).exploded = true;
</pre>
<p>Then an animation using a scatter series with one data point:</p>
<pre class="qml">
scatterSeries.clear();
scatterSeries.append(__activeIndex, interval);
scatterSeries.color = Qt.tint(scatterSeries.color, "#05FF0000");
scatterSeries.markerSize += 0.5;
</pre>
<p>When the wheel of fortune has stopped, we make the active slice blink by modifying its colors.</p>
<pre class="qml">
// Switch the colors of the slice and the border
wheelOfFortune.at(index).borderWidth = 2;
switchColor = wheelOfFortune.at(index).borderColor;
wheelOfFortune.at(index).borderColor = wheelOfFortune.at(index).color;
wheelOfFortune.at(index).color = switchColor;
</pre>
<p>Files:</p>
<ul>
<li><a href="qtcharts-qmlcustomizations-main-cpp.html">qmlcustomizations/main.cpp</a></li>
<li><a href="qtcharts-qmlcustomizations-qml-qmlcustomizations-main-qml.html">qmlcustomizations/qml/qmlcustomizations/main.qml</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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