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1 | 1 | #include "splinechartitem_p.h" |
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2 | 2 | #include "chartpresenter_p.h" |
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3 | 3 | #include <QPainter> |
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4 | 4 | |
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5 | 5 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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6 | 6 | |
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7 | 7 | SplineChartItem::SplineChartItem(QSplineSeries* series, QGraphicsItem *parent) : |
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8 | 8 | XYChartItem(series, parent), |
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9 | 9 | m_series(series) |
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10 | 10 | { |
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11 | 11 | setZValue(ChartPresenter::LineChartZValue); |
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12 | 12 | QObject::connect(series,SIGNAL(updated()),this,SLOT(handleUpdated())); |
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13 | 13 | handleUpdated(); |
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14 | 14 | } |
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15 | 15 | |
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16 | 16 | QRectF SplineChartItem::boundingRect() const |
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17 | 17 | { |
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18 | 18 | return m_rect; |
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19 | 19 | } |
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20 | 20 | |
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21 | 21 | QPainterPath SplineChartItem::shape() const |
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22 | 22 | { |
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23 | 23 | return m_path; |
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24 | 24 | } |
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25 | 25 | |
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26 | 26 | QPointF SplineChartItem::calculateGeometryControlPoint(int index) const |
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27 | 27 | { |
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28 | 28 | return XYChartItem::calculateGeometryPoint(m_series->controlPoint(index)); |
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29 | 29 | } |
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30 | 30 | |
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31 | 31 | void SplineChartItem::setLayout(QVector<QPointF>& points) |
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32 | 32 | { |
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33 | 33 | |
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34 | 34 | if(points.size()==0) |
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35 | 35 | { |
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36 | 36 | XYChartItem::setLayout(points); |
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37 | 37 | return; |
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38 | 38 | } |
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39 | 39 | |
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40 | 40 | QPainterPath splinePath; |
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41 | 41 | const QPointF& point = points.at(0); |
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42 | 42 | splinePath.moveTo(point); |
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43 | 43 | |
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44 | 44 | for (int i = 0; i < points.size() - 1; i++) |
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45 | 45 | { |
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46 | 46 | const QPointF& point = points.at(i + 1); |
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47 | 47 | splinePath.cubicTo(calculateGeometryControlPoint(2 * i), calculateGeometryControlPoint(2 * i + 1), point); |
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48 | 48 | } |
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49 | 49 | |
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50 | 50 | prepareGeometryChange(); |
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51 | 51 | m_path = splinePath; |
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52 | 52 | m_rect = splinePath.boundingRect(); |
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53 | 53 | XYChartItem::setLayout(points); |
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54 | 54 | } |
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55 | 55 | |
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56 | 56 | //handlers |
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57 | 57 | |
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58 | 58 | void SplineChartItem::handleUpdated() |
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59 | 59 | { |
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60 | 60 | m_pen = m_series->pen(); |
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61 | 61 | update(); |
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62 | 62 | } |
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63 | 63 | |
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64 | 64 | //painter |
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65 | 65 | |
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66 | 66 | void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) |
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67 | 67 | { |
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68 | 68 | Q_UNUSED(widget); |
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69 | 69 | Q_UNUSED(option); |
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70 | 70 | painter->save(); |
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71 | 71 | painter->setClipRect(clipRect()); |
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72 |
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73 | painter->setPen(m_series->pen()); | |
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72 | painter->setPen(m_pen); | |
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74 | 73 | painter->drawPath(m_path); |
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75 | 74 | |
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76 | 75 | // const QVector<QPointF> points = XYChartItem::points(); |
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77 | 76 | |
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78 | 77 | // for (int i = 0; i < points.size() - 1; i++) |
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79 | 78 | // { |
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80 | 79 | // painter->setPen(Qt::red); |
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81 | 80 | // painter->drawEllipse(points[i], 2, 2); |
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82 | 81 | |
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83 | 82 | // painter->setPen(Qt::blue); |
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84 | 83 | // // painter->drawLine(m_series->at(i), m_series->controlPoint(2 * i)); |
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85 | 84 | // // painter->drawLine(m_series->at(i + 1), m_series->controlPoint(2 * i + 1)); |
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86 | 85 | // // painter->drawEllipse(calculateGeometryControlPoint(2 * i), 4, 4); |
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87 | 86 | // // painter->drawEllipse(calculateGeometryControlPoint(2 * i + 1), 4, 4); |
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88 | 87 | // } |
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89 | 88 | // if (points.count() > 0) |
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90 | 89 | // { |
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91 | 90 | // painter->setPen(Qt::red); |
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92 | 91 | // painter->drawEllipse(points[points.count() - 1], 2, 2); |
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93 | 92 | // } |
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94 | 93 | painter->restore(); |
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95 | 94 | } |
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96 | 95 | |
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97 | 96 | |
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98 | 97 | |
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99 | 98 | #include "moc_splinechartitem_p.cpp" |
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100 | 99 | |
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101 | 100 | QTCOMMERCIALCHART_END_NAMESPACE |
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