<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ScopeView.qml Example File | Qt Charts 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-qmloscilloscope-example.html">Qml Oscilloscope</a></td><td >ScopeView.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtcharts-index.html">Qt Charts | Commercial or GPLv3</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <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"> /**************************************************************************** ** ** 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. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.0 import QtCharts 2.1 ChartView { id: chartView animationOptions: ChartView.NoAnimation theme: ChartView.ChartThemeDark property bool openGL: true property bool openGLSupported: true onOpenGLChanged: { if (openGLSupported) { series("signal 1").useOpenGL = openGL; series("signal 2").useOpenGL = openGL; } } Component.onCompleted: { if (!series("signal 1").useOpenGL) { openGLSupported = false openGL = false } } ValueAxis { id: axisY1 min: -1 max: 4 } ValueAxis { id: axisY2 min: -10 max: 5 } ValueAxis { id: axisX min: 0 max: 1024 } LineSeries { id: lineSeries1 name: "signal 1" axisX: axisX axisY: axisY1 useOpenGL: chartView.openGL } LineSeries { id: lineSeries2 name: "signal 2" axisX: axisX axisYRight: axisY2 useOpenGL: chartView.openGL } Timer { id: refreshTimer interval: 1 / 60 * 1000 // 60 Hz running: true repeat: true onTriggered: { dataSource.update(chartView.series(0)); dataSource.update(chartView.series(1)); } } function changeSeriesType(type) { chartView.removeAllSeries(); // Create two new series of the correct type. Axis x is the same for both of the series, // but the series have their own y-axes to make it possible to control the y-offset // of the "signal sources". if (type == "line") { var series1 = chartView.createSeries(ChartView.SeriesTypeLine, "signal 1", axisX, axisY1); series1.useOpenGL = chartView.openGL var series2 = chartView.createSeries(ChartView.SeriesTypeLine, "signal 2", axisX, axisY2); series2.useOpenGL = chartView.openGL } else { var series1 = chartView.createSeries(ChartView.SeriesTypeScatter, "signal 1", axisX, axisY1); series1.markerSize = 2; series1.borderColor = "transparent"; series1.useOpenGL = chartView.openGL var series2 = chartView.createSeries(ChartView.SeriesTypeScatter, "signal 2", axisX, axisY2); series2.markerSize = 2; series2.borderColor = "transparent"; series2.useOpenGL = chartView.openGL } } function createAxis(min, max) { // The following creates a ValueAxis object that can be then set as a x or y axis for a series return Qt.createQmlObject("import QtQuick 2.0; import QtCharts 2.0; ValueAxis { min: " + min + "; max: " + max + " }", chartView); } function setAnimations(enabled) { if (enabled) chartView.animationOptions = ChartView.SeriesAnimations; else chartView.animationOptions = ChartView.NoAnimation; } function changeRefreshRate(rate) { refreshTimer.interval = 1 / Number(rate) * 1000; } } </pre> </div> <!-- @@@qmloscilloscope/qml/qmloscilloscope/ScopeView.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. 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