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/**
* SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
*
* This file is part of the KD Chart library.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "mainwindow.h"
#include <QStandardItemModel>
#include <KChartChart>
#include <KChartHeaderFooter>
#include <KChartDatasetProxyModel>
#include <KChartAbstractCoordinatePlane>
#include <KChartBarDiagram>
#include <KChartTextAttributes>
#include <KChartDataValueAttributes>
#include <QMenuBar>
#include <QMenu>
#include <QTableView>
#include <QSplitter>
#include <QFileDialog>
#include <QStatusBar>
#include <QApplication>
using namespace KChart;
MainWindow::MainWindow()
{
QMenu *fileMenu = new QMenu( tr( "&File" ), this );
QAction *openAction = fileMenu->addAction( tr( "&Open..." ) );
openAction->setShortcut( QKeySequence( tr( "Ctrl+O" ) ) );
QAction *saveAction = fileMenu->addAction( tr( "&Save As..." ) );
saveAction->setShortcut( QKeySequence( tr( "Ctrl+S" ) ) );
QAction *quitAction = fileMenu->addAction( tr( "E&xit" ) );
quitAction->setShortcut( QKeySequence( tr( "Ctrl+Q" ) ) );
setupModel();
initializeData();
setupViews();
connect( openAction, SIGNAL(triggered()), this, SLOT(openFile()));
connect( saveAction, SIGNAL(triggered()), this, SLOT(saveFile()));
connect( quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
connect( m_selectionModel, SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
this, SLOT(selectionChanged(QItemSelection,QItemSelection)) );
connect( m_diagramView, SIGNAL(clicked(QModelIndex)), SLOT(itemClicked(QModelIndex)) );
menuBar()->addMenu( fileMenu );
statusBar();
setWindowTitle( tr( "KD Chart used as item viewer together with a QTableView" ) );
resize( 740, 480 );
}
void MainWindow::setupModel()
{
const int rowCount = 8;
const int columnCount = 3;
m_model = new QStandardItemModel( rowCount, columnCount, this );
m_model->setHeaderData( 0, Qt::Horizontal, tr( "Label" ) );
m_model->setHeaderData( 1, Qt::Horizontal, tr( "Quantity" ) );
m_model->setHeaderData( 2, Qt::Horizontal, tr( "Product A") );
}
void MainWindow::initializeData()
{
openFile(":/Charts/qtdata.cht");
}
void MainWindow::setupViews()
{
m_chart = new Chart();
m_tableView = new QTableView;
QSplitter *splitter = new QSplitter( Qt::Vertical );
splitter->addWidget( m_tableView );
splitter->addWidget( m_chart );
splitter->setStretchFactor( 0, 0 );
splitter->setStretchFactor( 1, 1 );
// Set up the diagram
m_diagramView = new BarDiagram();
DatasetDescriptionVector columnConfig( m_model->columnCount() - 1 );
for ( int iC = 1; iC <= columnConfig.size(); ++iC )
columnConfig[ iC - 1 ] = iC;
qDebug() << "(" << m_model->rowCount() << "," << m_model->columnCount() << ")";
KChart::DatasetProxyModel* dproxy = new KChart::DatasetProxyModel( this );
dproxy->setSourceModel( m_model );
dproxy->setDatasetColumnDescriptionVector( columnConfig );
m_diagramView->setModel( dproxy );
KChart::HeaderFooter* headerFooter = new KChart::HeaderFooter( m_chart );
headerFooter->setText( tr( "You can edit the table data, or select table cells with keyboard/mouse." ) );
headerFooter->setType( HeaderFooter::Header );
headerFooter->setPosition( Position::North );
m_chart->addHeaderFooter( headerFooter );
m_chart->coordinatePlane()->replaceDiagram( m_diagramView );
m_tableView->setModel( m_model );
m_selectionModel = new QItemSelectionModel( m_model );
m_tableView->setSelectionModel( m_selectionModel );
setCentralWidget( splitter );
}
void MainWindow::itemClicked( const QModelIndex& index )
{
QItemSelectionModel::SelectionFlags command = QItemSelectionModel::Clear | QItemSelectionModel::Select;
if ( QApplication::keyboardModifiers() & Qt::ControlModifier )
command = QItemSelectionModel::Toggle;
m_selectionModel->setCurrentIndex( static_cast< const QAbstractProxyModel* >( index.model() )
->mapToSource( index ), command );
}
void MainWindow::selectionChanged( const QItemSelection & selected, const QItemSelection & deselected )
{
if ( deselected != selected ) {
// First we set pItemSelection to the de-selected bars
// and we use an invisible pen, then we set it to the selected ones
// using a dark blue pen:
const QItemSelection * pItemSelection = &deselected;
QPen pen( Qt::NoPen );
for ( int iItemSelection = 0; iItemSelection < 2; ++iItemSelection ) {
for ( int i = 0; i < pItemSelection->size(); ++i ) {
QItemSelectionRange range( pItemSelection->at( i ) );
for ( int iRow = range.topLeft().row(); iRow <= range.bottomRight().row(); ++iRow ) {
for ( int iColumn = range.topLeft().column(); iColumn <= range.bottomRight().column(); ++iColumn ) {
// ignore the first column: that's just the label texts to be shown in the table view
if ( iColumn )
// enable (or disable, resp.) the surrounding line around this bar
m_diagramView->setPen( m_diagramView->model()
->index( iRow, iColumn - 1, m_diagramView->rootIndex()), pen );
}
}
}
pItemSelection = &selected;
pen.setColor( Qt::darkBlue );
pen.setStyle( Qt::DashLine );
pen.setWidth( 2 );
}
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());
QStringList pieces = line.split( ',', Qt::SkipEmptyParts );
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 ) );
m_model->setData( m_model->index(row, 0, QModelIndex()),
QColor( pieces.value( 3 ) ), Qt::DecorationRole );
++row;
}
} while ( !line.isEmpty() );
file.close();
statusBar()->showMessage( tr( "Loaded %1" ).arg( fileName ), 2000 );
}
}
}
void MainWindow::saveFile()
{
QString fileName = QFileDialog::getSaveFileName(this, tr( "Save file as" ), "", "*.cht" );
if ( !fileName.isEmpty() ) {
QFile file( fileName );
QTextStream stream( &file );
if ( file.open(QFile::WriteOnly | QFile::Text) ) {
for ( int row = 0; row < m_model->rowCount( QModelIndex() ); ++row ) {
QStringList pieces;
pieces.append( m_model->data( m_model->index( row, 0, QModelIndex() ),
Qt::DisplayRole).toString());
pieces.append( m_model->data( m_model->index( row, 1, QModelIndex() ),
Qt::DisplayRole).toString());
pieces.append( m_model->data( m_model->index( row, 2, QModelIndex() ),
Qt::DisplayRole).toString());
pieces.append( m_model->data( m_model->index( row, 0, QModelIndex() ),
Qt::DecorationRole).toString());
stream << pieces.join( "," ) << "\n";
}
}
file.close();
statusBar()->showMessage( tr( "Saved %1" ).arg( fileName ), 2000 );
}
}
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