|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2012 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.digia.com
|
|
|
**
|
|
|
** This file is part of the Qt Commercial Charts Add-on.
|
|
|
**
|
|
|
** $QT_BEGIN_LICENSE$
|
|
|
** Licensees holding valid Qt Commercial licenses may use this file in
|
|
|
** accordance with the Qt Commercial License Agreement provided with the
|
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
|
** a written agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.digia.com
|
|
|
** $QT_END_LICENSE$
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#include "chartview.h"
|
|
|
#include <math.h>
|
|
|
#include <QDebug>
|
|
|
|
|
|
QTCOMMERCIALCHART_USE_NAMESPACE
|
|
|
|
|
|
ChartView::ChartView(QWidget *parent)
|
|
|
: QChartView(new QChart(), parent),
|
|
|
m_scatter(0),
|
|
|
m_scatter2(0)
|
|
|
{
|
|
|
setRenderHint(QPainter::Antialiasing);
|
|
|
|
|
|
chart()->setTitle("Click to interact with scatter points");
|
|
|
|
|
|
m_scatter = new QScatterSeries();
|
|
|
m_scatter->setName("scatter1");
|
|
|
for(qreal x(0.5); x <= 4.0; x += 0.5) {
|
|
|
for(qreal y(0.5); y <= 4.0; y += 0.5) {
|
|
|
*m_scatter << QPointF(x, y);
|
|
|
}
|
|
|
}
|
|
|
m_scatter2 = new QScatterSeries();
|
|
|
m_scatter2->setName("scatter2");
|
|
|
|
|
|
chart()->addSeries(m_scatter2);
|
|
|
chart()->addSeries(m_scatter);
|
|
|
chart()->createDefaultAxes();
|
|
|
chart()->axisX()->setRange(0, 4.5);
|
|
|
chart()->axisY()->setRange(0, 4.5);
|
|
|
|
|
|
connect(m_scatter, SIGNAL(clicked(QPointF)), this, SLOT(handleClickedPoint(QPointF)));
|
|
|
}
|
|
|
|
|
|
ChartView::~ChartView()
|
|
|
{
|
|
|
}
|
|
|
|
|
|
void ChartView::handleClickedPoint(const QPointF& point)
|
|
|
{
|
|
|
QPointF clickedPoint = point;
|
|
|
// Find the closest point from series 1
|
|
|
QPointF closest(INT_MAX, INT_MAX);
|
|
|
qreal distance(INT_MAX);
|
|
|
foreach(QPointF currentPoint, m_scatter->points()) {
|
|
|
qreal currentDistance = sqrt((currentPoint.x() - clickedPoint.x()) * (currentPoint.x() - clickedPoint.x())
|
|
|
+ (currentPoint.y() - clickedPoint.y()) * (currentPoint.y() - clickedPoint.y()));
|
|
|
if (currentDistance < distance) {
|
|
|
distance = currentDistance;
|
|
|
closest = currentPoint;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Remove the closes point from series 1 and append it to series 2
|
|
|
m_scatter->remove(closest);
|
|
|
m_scatter2->append(closest);
|
|
|
}
|
|
|
|
