main.cpp
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CppLexer
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r2896 | /**************************************************************************** | ||
** | ||||
** 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(); | ||||
} | ||||