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Diffstat (limited to 'examples/charts/candlestickchart/main.cpp')
-rw-r--r-- | examples/charts/candlestickchart/main.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/examples/charts/candlestickchart/main.cpp b/examples/charts/candlestickchart/main.cpp new file mode 100644 index 00000000..243b0f61 --- /dev/null +++ b/examples/charts/candlestickchart/main.cpp @@ -0,0 +1,106 @@ +/**************************************************************************** +** +** 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(); +} |