1 files changed, 79 insertions, 0 deletions
diff --git a/examples/charts/scatterinteractions/chartview.cpp b/examples/charts/scatterinteractions/chartview.cpp
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+++ b/examples/charts/scatterinteractions/chartview.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 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 Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise 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 <qmath.h>
+#include <QDebug>
+
+QT_CHARTS_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 = qSqrt((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);
+}