<?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>main.qml Example File | Qt Charts 5.9</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 5.9</td><td ><a href="qtcharts-index.html">Qt Charts</a></td><td ><a href="qtcharts-qmlf1legends-example.html">Qml F1 Legends</a></td><td >main.qml Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</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">main.qml Example File</h1> <span class="subtitle">qmlf1legends/qml/qmlf1legends/main.qml</span> <!-- $$$qmlf1legends/qml/qmlf1legends/main.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 2.0 import QtQuick.XmlListModel 2.0 <span class="type">Item</span> { <span class="name">width</span>: <span class="number">400</span> <span class="name">height</span>: <span class="number">300</span> property <span class="type">int</span> <span class="name">currentIndex</span>: -<span class="number">1</span> <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">title</span>: <span class="string">"Driver Speeds, lap 1"</span> <span class="name">anchors</span>.fill: <span class="name">parent</span> <span class="name">legend</span>.alignment: <span class="name">Qt</span>.<span class="name">AlignTop</span> <span class="name">animationOptions</span>: <span class="name">ChartView</span>.<span class="name">SeriesAnimations</span> <span class="name">antialiasing</span>: <span class="number">true</span> } <span class="comment">// An example XmlListModel containing F1 legend drivers' speeds at speed traps</span> <span class="type">SpeedsXml</span> { <span class="name">id</span>: <span class="name">speedsXml</span> <span class="name">onStatusChanged</span>: { <span class="keyword">if</span> (<span class="name">status</span> <span class="operator">==</span> <span class="name">XmlListModel</span>.<span class="name">Ready</span>) { <span class="name">timer</span>.<span class="name">start</span>(); } } } <span class="comment">// A timer to mimic refreshing the data dynamically</span> <span class="type">Timer</span> { <span class="name">id</span>: <span class="name">timer</span> <span class="name">interval</span>: <span class="number">700</span> <span class="name">repeat</span>: <span class="number">true</span> <span class="name">triggeredOnStart</span>: <span class="number">true</span> <span class="name">running</span>: <span class="number">false</span> <span class="name">onTriggered</span>: { currentIndex++; <span class="keyword">if</span> (<span class="name">currentIndex</span> <span class="operator"><</span> <span class="name">speedsXml</span>.<span class="name">count</span>) { <span class="comment">// Check if there is a series for the data already</span> <span class="comment">// (we are using driver name to identify series)</span> var <span class="name">lineSeries</span> = <span class="name">chartView</span>.<span class="name">series</span>(<span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">driver</span>); <span class="keyword">if</span> (!<span class="name">lineSeries</span>) { <span class="name">lineSeries</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">createSeries</span>(<span class="name">ChartView</span>.<span class="name">SeriesTypeLine</span>, <span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">driver</span>); <span class="name">chartView</span>.<span class="name">axisY</span>().<span class="name">min</span> <span class="operator">=</span> <span class="number">0</span>; <span class="name">chartView</span>.<span class="name">axisY</span>().<span class="name">max</span> <span class="operator">=</span> <span class="number">250</span>; <span class="name">chartView</span>.<span class="name">axisY</span>().<span class="name">tickCount</span> <span class="operator">=</span> <span class="number">6</span>; <span class="name">chartView</span>.<span class="name">axisY</span>().<span class="name">titleText</span> <span class="operator">=</span> <span class="string">"speed (kph)"</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">titleText</span> <span class="operator">=</span> <span class="string">"speed trap"</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">labelFormat</span> <span class="operator">=</span> <span class="string">"%.0f"</span>; } <span class="name">lineSeries</span>.<span class="name">append</span>(<span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">speedTrap</span>, <span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">speed</span>); <span class="keyword">if</span> (<span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">speedTrap</span> <span class="operator">></span> <span class="number">3</span>) { <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">max</span> <span class="operator">=</span> <span class="name">Number</span>(<span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span>).<span class="name">speedTrap</span>) <span class="operator">+</span> <span class="number">1</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">min</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">max</span> <span class="operator">-</span> <span class="number">5</span>; } <span class="keyword">else</span> { <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">max</span> <span class="operator">=</span> <span class="number">5</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">min</span> <span class="operator">=</span> <span class="number">0</span>; } <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">tickCount</span> <span class="operator">=</span> <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">max</span> <span class="operator">-</span> <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">min</span> <span class="operator">+</span> <span class="number">1</span>; } <span class="keyword">else</span> { <span class="comment">// No more data, change x-axis range to show all the data</span> <span class="name">timer</span>.<span class="name">stop</span>(); <span class="name">chartView</span>.<span class="name">animationOptions</span> <span class="operator">=</span> <span class="name">ChartView</span>.<span class="name">AllAnimations</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">min</span> <span class="operator">=</span> <span class="number">0</span>; <span class="name">chartView</span>.<span class="name">axisX</span>().<span class="name">max</span> <span class="operator">=</span> <span class="name">speedsXml</span>.<span class="name">get</span>(<span class="name">currentIndex</span> <span class="operator">-</span> <span class="number">1</span>).<span class="name">speedTrap</span>; } } } } </pre> </div> <!-- @@@qmlf1legends/qml/qmlf1legends/main.qml --> </div> </div> </div> </div> </div> <div class="footer"> <p> <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 of their respective owners. </p> </div> </body> </html>