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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 <KChartChart>
#include <KChartPlotter>
#include <KChartDataValueAttributes>
#include <KChartTextAttributes>
#include <KChartMarkerAttributes>
#include <QStandardItemModel>
#include <QTimer>
using namespace KChart;
static const int nBubbles = 7;
// we display seven bubbles using the following data structure:
// 0: Y
// 1: X
// 2: size
struct DataType{
DataType( qreal x_,
qreal y_,
qreal size_ )
: x(x_)
, y(y_)
, size(size_)
{}
qreal x;
qreal y;
qreal size;
};
static const DataType bubblesData[nBubbles] = {
DataType(0.5, 1.0, 100),
DataType(1.0, 0.5, 60 ),
DataType(1.6, 2.0, 28 ),
DataType(0.7, 0.3, 55 ),
DataType(1.3, 2.0, 95 ),
DataType(2.0, 1.0, 75 ),
DataType(1.4, 1.1, 85 )
};
#define ROLE_SIZE Qt::UserRole + 1
MainWindow::MainWindow( QWidget* parent ) :
QWidget( parent ),
m_model(nullptr)
{
setupUi( this );
QHBoxLayout* chartLayout = new QHBoxLayout( chartFrame );
m_chart = new Chart();
chartLayout->addWidget( m_chart );
// Set up the data
initializeDataModel();
// Set up the diagram
m_plotter = new Plotter();
// Register the data model at the diagram
m_plotter->setModel( m_model );
// Add axes to the diagram
CartesianAxis *xAxis = new CartesianAxis( m_plotter );
CartesianAxis *xAxis2 = new CartesianAxis( m_plotter );
CartesianAxis *yAxis = new CartesianAxis ( m_plotter );
CartesianAxis *yAxis2 = new CartesianAxis ( m_plotter );
xAxis->setPosition ( KChart::CartesianAxis::Bottom );
xAxis2->setPosition( KChart::CartesianAxis::Top );
yAxis->setPosition ( KChart::CartesianAxis::Left );
yAxis2->setPosition( KChart::CartesianAxis::Right );
m_plotter->addAxis( xAxis );
m_plotter->addAxis( xAxis2 );
m_plotter->addAxis( yAxis );
m_plotter->addAxis( yAxis2 );
connect( threeDEnabled, SIGNAL(toggled(bool)), this, SLOT(setMarkerAttributes()) );
m_chart->coordinatePlane()->replaceDiagram( m_plotter );
m_chart->setGlobalLeading( 20, 20, 20, 20 );
setMarkerAttributes();
}
void MainWindow::initializeDataModel()
{
m_model = new QStandardItemModel( nBubbles, 2 );
m_model->setHeaderData(0, Qt::Horizontal, tr("Some Bubbles"));
for ( int i=0; i < nBubbles; ++i ) {
const QModelIndex indexX = m_model->index(i, 0);
const QModelIndex indexY = m_model->index(i, 1);
m_model->setData(indexX, QVariant( bubblesData[i].x ), Qt::DisplayRole);
m_model->setData(indexY, QVariant( bubblesData[i].y ), Qt::DisplayRole);
m_model->setData(indexY, bubblesData[i].size, ROLE_SIZE );
}
}
void MainWindow::setMarkerAttributes()
{
// disable the connecting line
KChart::LineAttributes la = m_plotter->lineAttributes();
la.setVisible(false);
m_plotter->setLineAttributes(la);
for ( int iRow = 0; iRow<nBubbles; ++iRow ) {
const QModelIndex indexX = m_plotter->model()->index(iRow, 0);
const QModelIndex indexY = m_plotter->model()->index(iRow, 1);
DataValueAttributes dva( m_plotter->dataValueAttributes( indexX ) );
dva.setVisible( true );
TextAttributes ta( dva.textAttributes() );
ta.setVisible( false );
MarkerAttributes ma( dva.markerAttributes() );
ma.setVisible( true );
ma.setMarkerStyle( MarkerAttributes::MarkerCircle );
ma.setThreeD( threeDEnabled->isChecked() );
// set the size
const qreal d = m_model->data( indexY, ROLE_SIZE ).toReal();
ma.setMarkerSize( QSizeF(d,d) );
RelativePosition pos( dva.positivePosition() );
pos.setAlignment( Qt::AlignCenter );
pos.setHorizontalPadding(0);
dva.setPositivePosition( pos );
dva.setMarkerAttributes( ma );
dva.setTextAttributes( ta );
// note: The KChart::Plotter looks at the X cell
// for data value attributes,
// any attrs set at the Y cell are ignored.
m_plotter->setDataValueAttributes( indexX, dva );
}
m_chart->update();
}
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