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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
// Qt-Security score:critical reason:data-parser
#include "rainfalldata.h"
#include <QtCore/qfile.h>
#include <QtCore/qrangemodel.h>
#include <QtCore/qlist.h>
#include <QtCore/qtextstream.h>
#include <QtGraphs/q3dscene.h>
#include <QtGraphs/qbar3dseries.h>
#include <QtGraphs/qcategory3daxis.h>
#include <QtGraphs/qgraphstheme.h>
#include <QtGraphs/qitemmodelbardataproxy.h>
#include <QtGraphs/qvalue3daxis.h>
#include <array>
using namespace Qt::StringLiterals;
//! [1]
using YearlyData = std::array<double, 12>;
using ModelData = QList<YearlyData>;
static ModelData readData(const QString &fileName, int *firstYear)
{
ModelData result;
*firstYear = -1;
// Read data from a data file into the data item list
QFile dataFile(fileName);
if (!dataFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
qWarning() << "Unable to open data file:" << dataFile.fileName() << dataFile.errorString();
return result;
}
QTextStream stream(&dataFile);
int lastYear = -1;
while (!stream.atEnd()) {
QString line = stream.readLine();
if (line.startsWith(u'#')) // Ignore comments
continue;
const auto strList = QStringView{line}.split(',', Qt::SkipEmptyParts);
// Each line has three data items: Year, month, and rainfall value
if (strList.size() < 3) {
qWarning() << "Invalid row read from data:" << line;
continue;
}
// Store year and month as int, and rainfall value as double
bool yearOk{};
bool monthOk{};
bool valueOk{};
const int year = strList.at(0).trimmed().toInt(&yearOk);
const int month = strList.at(1).trimmed().toInt(&monthOk);
const double value = strList.at(2).trimmed().toDouble(&valueOk);
if (!yearOk || !monthOk || month < 1 || month > 12 || !valueOk) {
qWarning() << "Invalid row values:" << line;
continue;
}
if (year != lastYear) {
if (lastYear == -1) {
*firstYear = year;
} else if (year != lastYear + 1) {
qWarning() << "Non-consecutive years" << year << lastYear;
return {};
}
lastYear = year;
result.emplace_back(YearlyData{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0});
}
result.back()[month - 1] = value;
}
return result;
}
//! [1]
RainfallData::RainfallData()
{
// Create proxy and series
//! [0]
int firstYear{};
auto data = readData(":/data/raindata.txt"_L1, &firstYear);
Q_ASSERT(!data.isEmpty());
updateYearsList(firstYear, firstYear + int(data.size()) - 1);
auto *model = new QRangeModel(data, this);
m_proxy = new QItemModelBarDataProxy(model);
m_proxy->setUseModelCategories(true);
m_series = new QBar3DSeries(m_proxy);
//! [0]
m_series->setItemLabelFormat(u"%.1f mm"_s);
// Create the axes
m_rowAxis = new QCategory3DAxis(this);
m_colAxis = new QCategory3DAxis(this);
m_valueAxis = new QValue3DAxis(this);
m_rowAxis->setAutoAdjustRange(true);
m_colAxis->setAutoAdjustRange(true);
m_valueAxis->setAutoAdjustRange(true);
// Set axis labels and titles
QStringList months{"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"};
m_rowAxis->setTitle("Year");
m_colAxis->setTitle("Month");
m_valueAxis->setTitle("rainfall (mm)");
m_valueAxis->setSegmentCount(5);
m_rowAxis->setLabels(m_years);
m_colAxis->setLabels(months);
m_rowAxis->setTitleVisible(true);
m_colAxis->setTitleVisible(true);
m_valueAxis->setTitleVisible(true);
}
RainfallData::~RainfallData() = default;
void RainfallData::updateYearsList(int start, int end)
{
m_years.clear();
for (int i = start; i <= end; ++i)
m_years << QString::number(i);
}
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