| /**************************************************************************** |
| ** |
| ** 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. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <QtCharts/QBarCategoryAxis> |
| #include <QtCharts/QCandlestickSeries> |
| #include <QtCharts/QChartView> |
| #include <QtCharts/QValueAxis> |
| #include <QtCore/QDateTime> |
| #include <QtWidgets/QApplication> |
| #include <QtWidgets/QMainWindow> |
| |
| #include "candlestickdatareader.h" |
| |
| QT_CHARTS_USE_NAMESPACE |
| |
| int main(int argc, char *argv[]) |
| { |
| QApplication a(argc, argv); |
| |
| //! [1] |
| QCandlestickSeries *acmeSeries = new QCandlestickSeries(); |
| acmeSeries->setName("Acme Ltd"); |
| acmeSeries->setIncreasingColor(QColor(Qt::green)); |
| acmeSeries->setDecreasingColor(QColor(Qt::red)); |
| //! [1] |
| |
| //! [2] |
| QFile acmeData(":acme"); |
| if (!acmeData.open(QIODevice::ReadOnly | QIODevice::Text)) |
| return 1; |
| |
| QStringList categories; |
| |
| CandlestickDataReader dataReader(&acmeData); |
| while (!dataReader.atEnd()) { |
| QCandlestickSet *set = dataReader.readCandlestickSet(); |
| if (set) { |
| acmeSeries->append(set); |
| categories << QDateTime::fromMSecsSinceEpoch(set->timestamp()).toString("dd"); |
| } |
| } |
| //! [2] |
| |
| //! [3] |
| QChart *chart = new QChart(); |
| chart->addSeries(acmeSeries); |
| chart->setTitle("Acme Ltd Historical Data (July 2015)"); |
| chart->setAnimationOptions(QChart::SeriesAnimations); |
| //! [3] |
| |
| //! [4] |
| chart->createDefaultAxes(); |
| |
| QBarCategoryAxis *axisX = qobject_cast<QBarCategoryAxis *>(chart->axes(Qt::Horizontal).at(0)); |
| axisX->setCategories(categories); |
| |
| QValueAxis *axisY = qobject_cast<QValueAxis *>(chart->axes(Qt::Vertical).at(0)); |
| axisY->setMax(axisY->max() * 1.01); |
| axisY->setMin(axisY->min() * 0.99); |
| //! [4] |
| |
| //! [5] |
| chart->legend()->setVisible(true); |
| chart->legend()->setAlignment(Qt::AlignBottom); |
| //! [5] |
| |
| //! [6] |
| QChartView *chartView = new QChartView(chart); |
| chartView->setRenderHint(QPainter::Antialiasing); |
| //! [6] |
| |
| //! [7] |
| QMainWindow window; |
| window.setCentralWidget(chartView); |
| window.resize(800, 600); |
| window.show(); |
| //! [7] |
| |
| return a.exec(); |
| } |