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<h1 class="title">ScopeView.qml Example File</h1>
<span class="subtitle">qmloscilloscope/qml/qmloscilloscope/ScopeView.qml</span>
<!-- $$$qmloscilloscope/qml/qmloscilloscope/ScopeView.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
import QtQuick 2.0
import QtCharts 2.1
<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">animationOptions</span>: <span class="name">ChartView</span>.<span class="name">NoAnimation</span>
<span class="name">theme</span>: <span class="name">ChartView</span>.<span class="name">ChartThemeDark</span>
property <span class="type">bool</span> <span class="name">openGL</span>: <span class="number">true</span>
property <span class="type">bool</span> <span class="name">openGLSupported</span>: <span class="number">true</span>
<span class="name">onOpenGLChanged</span>: {
<span class="keyword">if</span> (<span class="name">openGLSupported</span>) {
<span class="name">series</span>(<span class="string">"signal 1"</span>).<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">openGL</span>;
<span class="name">series</span>(<span class="string">"signal 2"</span>).<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">openGL</span>;
}
}
<span class="name">Component</span>.onCompleted: {
<span class="keyword">if</span> (!<span class="name">series</span>(<span class="string">"signal 1"</span>).<span class="name">useOpenGL</span>) {
<span class="name">openGLSupported</span> <span class="operator">=</span> <span class="number">false</span>
<span class="name">openGL</span> <span class="operator">=</span> <span class="number">false</span>
}
}
<span class="type"><a href="qml-qtcharts-valueaxis.html">ValueAxis</a></span> {
<span class="name">id</span>: <span class="name">axisY1</span>
<span class="name">min</span>: -<span class="number">1</span>
<span class="name">max</span>: <span class="number">4</span>
}
<span class="type"><a href="qml-qtcharts-valueaxis.html">ValueAxis</a></span> {
<span class="name">id</span>: <span class="name">axisY2</span>
<span class="name">min</span>: -<span class="number">10</span>
<span class="name">max</span>: <span class="number">5</span>
}
<span class="type"><a href="qml-qtcharts-valueaxis.html">ValueAxis</a></span> {
<span class="name">id</span>: <span class="name">axisX</span>
<span class="name">min</span>: <span class="number">0</span>
<span class="name">max</span>: <span class="number">1024</span>
}
<span class="type"><a href="qml-qtcharts-lineseries.html">LineSeries</a></span> {
<span class="name">id</span>: <span class="name">lineSeries1</span>
<span class="name">name</span>: <span class="string">"signal 1"</span>
<span class="name">axisX</span>: <span class="name">axisX</span>
<span class="name">axisY</span>: <span class="name">axisY1</span>
<span class="name">useOpenGL</span>: <span class="name">chartView</span>.<span class="name">openGL</span>
}
<span class="type"><a href="qml-qtcharts-lineseries.html">LineSeries</a></span> {
<span class="name">id</span>: <span class="name">lineSeries2</span>
<span class="name">name</span>: <span class="string">"signal 2"</span>
<span class="name">axisX</span>: <span class="name">axisX</span>
<span class="name">axisYRight</span>: <span class="name">axisY2</span>
<span class="name">useOpenGL</span>: <span class="name">chartView</span>.<span class="name">openGL</span>
}
<span class="type">Timer</span> {
<span class="name">id</span>: <span class="name">refreshTimer</span>
<span class="name">interval</span>: <span class="number">1</span> <span class="operator">/</span> <span class="number">60</span> <span class="operator">*</span> <span class="number">1000</span> <span class="comment">// 60 Hz</span>
<span class="name">running</span>: <span class="number">true</span>
<span class="name">repeat</span>: <span class="number">true</span>
<span class="name">onTriggered</span>: {
<span class="name">dataSource</span>.<span class="name">update</span>(<span class="name">chartView</span>.<span class="name">series</span>(<span class="number">0</span>));
<span class="name">dataSource</span>.<span class="name">update</span>(<span class="name">chartView</span>.<span class="name">series</span>(<span class="number">1</span>));
}
}
<span class="keyword">function</span> <span class="name">changeSeriesType</span>(<span class="name">type</span>) {
<span class="name">chartView</span>.<span class="name">removeAllSeries</span>();
<span class="comment">// Create two new series of the correct type. Axis x is the same for both of the series,</span>
<span class="comment">// but the series have their own y-axes to make it possible to control the y-offset</span>
<span class="comment">// of the "signal sources".</span>
<span class="keyword">if</span> (<span class="name">type</span> <span class="operator">==</span> <span class="string">"line"</span>) {
var <span class="name">series1</span> = <span class="name">chartView</span>.<span class="name">createSeries</span>(<span class="name">ChartView</span>.<span class="name">SeriesTypeLine</span>, <span class="string">"signal 1"</span>,
<span class="name">axisX</span>, <span class="name">axisY1</span>);
<span class="name">series1</span>.<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">openGL</span>
var <span class="name">series2</span> = <span class="name">chartView</span>.<span class="name">createSeries</span>(<span class="name">ChartView</span>.<span class="name">SeriesTypeLine</span>, <span class="string">"signal 2"</span>,
<span class="name">axisX</span>, <span class="name">axisY2</span>);
<span class="name">series2</span>.<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">openGL</span>
} <span class="keyword">else</span> {
var <span class="name">series1</span> = <span class="name">chartView</span>.<span class="name">createSeries</span>(<span class="name">ChartView</span>.<span class="name">SeriesTypeScatter</span>, <span class="string">"signal 1"</span>,
<span class="name">axisX</span>, <span class="name">axisY1</span>);
<span class="name">series1</span>.<span class="name">markerSize</span> <span class="operator">=</span> <span class="number">2</span>;
<span class="name">series1</span>.<span class="name">borderColor</span> <span class="operator">=</span> <span class="string">"transparent"</span>;
<span class="name">series1</span>.<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">openGL</span>
var <span class="name">series2</span> = <span class="name">chartView</span>.<span class="name">createSeries</span>(<span class="name">ChartView</span>.<span class="name">SeriesTypeScatter</span>, <span class="string">"signal 2"</span>,
<span class="name">axisX</span>, <span class="name">axisY2</span>);
<span class="name">series2</span>.<span class="name">markerSize</span> <span class="operator">=</span> <span class="number">2</span>;
<span class="name">series2</span>.<span class="name">borderColor</span> <span class="operator">=</span> <span class="string">"transparent"</span>;
<span class="name">series2</span>.<span class="name">useOpenGL</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">openGL</span>
}
}
<span class="keyword">function</span> <span class="name">createAxis</span>(<span class="name">min</span>, max) {
<span class="comment">// The following creates a ValueAxis object that can be then set as a x or y axis for a series</span>
<span class="keyword">return</span> <span class="name">Qt</span>.<span class="name">createQmlObject</span>(<span class="string">"import QtQuick 2.0; import QtCharts 2.0; ValueAxis { min: "</span>
<span class="operator">+</span> <span class="name">min</span> <span class="operator">+</span> <span class="string">"; max: "</span> <span class="operator">+</span> <span class="name">max</span> <span class="operator">+</span> <span class="string">" }"</span>, <span class="name">chartView</span>);
}
<span class="keyword">function</span> <span class="name">setAnimations</span>(<span class="name">enabled</span>) {
<span class="keyword">if</span> (<span class="name">enabled</span>)
<span class="name">chartView</span>.<span class="name">animationOptions</span> <span class="operator">=</span> <span class="name">ChartView</span>.<span class="name">SeriesAnimations</span>;
<span class="keyword">else</span>
<span class="name">chartView</span>.<span class="name">animationOptions</span> <span class="operator">=</span> <span class="name">ChartView</span>.<span class="name">NoAnimation</span>;
}
<span class="keyword">function</span> <span class="name">changeRefreshRate</span>(<span class="name">rate</span>) {
<span class="name">refreshTimer</span>.<span class="name">interval</span> <span class="operator">=</span> <span class="number">1</span> <span class="operator">/</span> <span class="name">Number</span>(<span class="name">rate</span>) <span class="operator">*</span> <span class="number">1000</span>;
}
}
</pre>
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<!-- @@@qmloscilloscope/qml/qmloscilloscope/ScopeView.qml -->
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<acronym title="Copyright">©</acronym> 2017 The Qt Company Ltd.
Documentation contributions included herein are the copyrights of
their respective owners.<br> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property
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distrib
>
Mageia
>
6
>
x86_64
>
media
>
core-updates
>
by-pkgid
>
19952c5e751bf7e3108c3c59625b0f35
>
files
>
456
