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/**
* Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "mainwindow.h"
#include <QStandardItemModel>
#include <QFileDialog>
#include <KChartChart>
#include <KChartDataValueAttributes>
#include <KChartLegend>
#include <KChartLineDiagram>
#include <KChartTextAttributes>
#include <KChartThreeDLineAttributes>
using namespace KChart;
MainWindow::MainWindow( QWidget* parent ) :
QWidget( parent )
{
setupUi( this );
QHBoxLayout* chartLayout = new QHBoxLayout( chartFrame );
m_chart = new Chart();
m_chart->setGlobalLeading( 20, 20, 20, 20 );
chartLayout->addWidget( m_chart );
// Initialize the model, and fill it with data
const int rowCount = 8;
const int columnCount = 3;
m_model = new QStandardItemModel(rowCount, columnCount, this);
m_model->setHeaderData(0, Qt::Horizontal, tr("Product A"));
m_model->setHeaderData(1, Qt::Horizontal, tr("Product B"));
m_model->setHeaderData(2, Qt::Horizontal, tr("Product C"));
openFile(":/Charts/qtdata.cht");
// Set up the diagram
m_lines = new LineDiagram();
// Register the data model at the diagram
m_lines->setModel( m_model );
// Add axes to the diagram
CartesianAxis *xAxis = new CartesianAxis( m_lines );
CartesianAxis *yAxis = new CartesianAxis ( m_lines );
xAxis->setPosition ( KChart::CartesianAxis::Bottom );
yAxis->setPosition ( KChart::CartesianAxis::Left );
m_lines->addAxis( xAxis );
m_lines->addAxis( yAxis );
// Make the lines thicker
for ( int iColumn = 0; iColumn < columnCount; ++iColumn ) {
QPen linePen( m_lines->pen( iColumn ) );
linePen.setWidth( 3 );
m_lines->setPen( iColumn, linePen );
}
// Register the diagram at the coordinate plane
m_chart->coordinatePlane()->replaceDiagram( m_lines );
// Add a legend
Legend* legend = new Legend( m_lines, m_chart );
legend->setPosition( Position::South );
legend->setAlignment( Qt::AlignCenter );
legend->setShowLines( true );
legend->setTitleText("");
legend->setOrientation( Qt::Horizontal );
legend->addDiagram( m_lines );
m_chart->addLegend( legend );
}
void MainWindow::on_showDataset1CB_toggled( bool checked )
{
setHidden( 0, ! checked );
}
void MainWindow::on_showDataset2CB_toggled( bool checked )
{
setHidden( 1, ! checked );
}
void MainWindow::on_showDataset3CB_toggled( bool checked )
{
setHidden( 2, ! checked );
}
void MainWindow::setHidden( int dataset, bool hidden )
{
m_lines->setHidden( dataset, hidden );
m_chart->update();
}
void MainWindow::openFile(const QString &path)
{
QString fileName;
if (path.isNull())
fileName = QFileDialog::getOpenFileName(this, tr("Choose a data file"),
"", "*.cht");
else
fileName = path;
if (!fileName.isEmpty()) {
QFile file(fileName);
if (file.open(QFile::ReadOnly | QFile::Text)) {
QTextStream stream(&file);
QString line;
m_model->removeRows(0, m_model->rowCount(QModelIndex()), QModelIndex());
int row = 0;
do {
line = stream.readLine();
if (!line.isEmpty()) {
m_model->insertRows(row, 1, QModelIndex());
#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
QStringList pieces = line.split(',', QString::SkipEmptyParts);
#else
QStringList pieces = line.split(',', Qt::SkipEmptyParts);
#endif
m_model->setData(m_model->index(row, 0, QModelIndex()), pieces.value(0));
m_model->setData(m_model->index(row, 1, QModelIndex()), pieces.value(1));
m_model->setData(m_model->index(row, 2, QModelIndex()), pieces.value(2));
++row;
}
} while (!line.isEmpty());
file.close();
}
}
}
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