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1 | 1 | /**************************************************************************** |
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2 | 2 | ** |
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3 | 3 | ** Copyright (C) 2012 Digia Plc |
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4 | 4 | ** All rights reserved. |
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5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
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6 | 6 | ** |
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7 | 7 | ** This file is part of the Qt Commercial Charts Add-on. |
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8 | 8 | ** |
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9 | 9 | ** $QT_BEGIN_LICENSE$ |
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10 | 10 | ** Licensees holding valid Qt Commercial licenses may use this file in |
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11 | 11 | ** accordance with the Qt Commercial License Agreement provided with the |
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12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
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13 | 13 | ** a written agreement between you and Digia. |
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14 | 14 | ** |
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15 | 15 | ** If you have questions regarding the use of this file, please use |
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16 | 16 | ** contact form at http://qt.digia.com |
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17 | 17 | ** $QT_END_LICENSE$ |
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18 | 18 | ** |
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19 | 19 | ****************************************************************************/ |
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20 | 20 | |
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21 | 21 | #include "chartview.h" |
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22 | 22 | #include <math.h> |
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23 | 23 | #include <QDebug> |
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24 | 24 | |
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25 | 25 | QTCOMMERCIALCHART_USE_NAMESPACE |
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26 | 26 | |
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27 | 27 | ChartView::ChartView(QWidget *parent) |
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28 | 28 | : QChartView(new QChart(), parent), |
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29 | 29 | m_scatter(0), |
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30 | 30 | m_scatter2(0) |
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31 | 31 | { |
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32 | 32 | setRenderHint(QPainter::Antialiasing); |
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33 | 33 | |
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34 | 34 | chart()->setTitle("Click to interact with scatter points"); |
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35 | 35 | |
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36 | 36 | m_scatter = new QScatterSeries(); |
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37 | 37 | m_scatter->setName("scatter1"); |
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38 | 38 | for(qreal x(0.5); x <= 4.0; x += 0.5) { |
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39 | 39 | for(qreal y(0.5); y <= 4.0; y += 0.5) { |
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40 | 40 | *m_scatter << QPointF(x, y); |
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41 | 41 | } |
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42 | 42 | } |
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43 | 43 | m_scatter2 = new QScatterSeries(); |
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44 | 44 | m_scatter2->setName("scatter2"); |
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45 | 45 | |
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46 | 46 | chart()->addSeries(m_scatter2); |
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47 | 47 | chart()->addSeries(m_scatter); |
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48 | 48 | chart()->axisX()->setRange(0, 4.5); |
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49 | 49 | chart()->axisY()->setRange(0, 4.5); |
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50 | 50 | |
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51 | 51 | connect(m_scatter, SIGNAL(clicked(QPointF)), this, SLOT(handleClickedPoint(QPointF))); |
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52 | 52 | } |
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53 | 53 | |
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54 | 54 | ChartView::~ChartView() |
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55 | 55 | { |
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56 | 56 | } |
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57 | 57 | |
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58 | 58 | void ChartView::handleClickedPoint(const QPointF& point) |
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59 | 59 | { |
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60 | 60 | QPointF clickedPoint = point; |
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61 | 61 | // Find the closest point from series 1 |
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62 |
QPointF closest(INT |
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63 |
qreal distance(INT |
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62 | QPointF closest(INT_MAX, INT_MAX); | |
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63 | qreal distance(INT_MAX); | |
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64 | 64 | foreach(QPointF currentPoint, m_scatter->points()) { |
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65 | 65 | qreal currentDistance = sqrt((currentPoint.x() - clickedPoint.x()) * (currentPoint.x() - clickedPoint.x()) |
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66 | 66 | + (currentPoint.y() - clickedPoint.y()) * (currentPoint.y() - clickedPoint.y())); |
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67 | 67 | if (currentDistance < distance) { |
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68 | 68 | distance = currentDistance; |
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69 | 69 | closest = currentPoint; |
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70 | 70 | } |
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71 | 71 | } |
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72 | 72 | |
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73 | 73 | // Remove the closes point from series 1 and append it to series 2 |
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74 | 74 | m_scatter->remove(closest); |
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75 | 75 | m_scatter2->append(closest); |
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76 | 76 | } |
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