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1 | 1 | #include "areachartitem_p.h" |
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2 | 2 | #include "qareaseries.h" |
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3 | 3 | #include "qlineseries.h" |
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4 | #include "chartpresenter_p.h" | |
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4 | 5 | #include <QPainter> |
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5 | 6 | |
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6 | 7 | |
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7 | 8 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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8 | 9 | |
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9 | 10 | //TODO: optimize : remove points which are not visible |
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10 | 11 | |
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11 | 12 | AreaChartItem::AreaChartItem(QAreaSeries* areaSeries,QGraphicsItem *parent):ChartItem(parent), |
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12 | 13 | m_series(areaSeries), |
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13 | 14 | m_upper(0), |
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14 | 15 | m_lower(0), |
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15 | 16 | m_pointsVisible(false) |
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16 | 17 | { |
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17 |
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18 | setZValue(ChartPresenter::LineChartZValue); | |
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18 | 19 | m_upper = new AreaBoundItem(this,m_series->upperSeries()); |
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19 | 20 | if(m_series->lowerSeries()){ |
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20 | 21 | m_lower = new AreaBoundItem(this,m_series->lowerSeries()); |
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21 | 22 | } |
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22 | 23 | |
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23 | 24 | QObject::connect(areaSeries,SIGNAL(updated()),this,SLOT(handleUpdated())); |
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24 | 25 | |
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25 | 26 | handleUpdated(); |
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26 | 27 | } |
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27 | 28 | |
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28 | 29 | AreaChartItem::~AreaChartItem() |
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29 | 30 | { |
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30 | 31 | delete m_upper; |
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31 | 32 | delete m_lower; |
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32 | 33 | }; |
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33 | 34 | |
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34 | 35 | QRectF AreaChartItem::boundingRect() const |
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35 | 36 | { |
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36 | 37 | return m_rect; |
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37 | 38 | } |
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38 | 39 | |
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39 | 40 | QPainterPath AreaChartItem::shape() const |
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40 | 41 | { |
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41 | 42 | return m_path; |
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42 | 43 | } |
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43 | 44 | |
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44 | 45 | void AreaChartItem::updatePath() |
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45 | 46 | { |
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46 | 47 | QPainterPath path; |
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47 | 48 | |
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48 | 49 | path.connectPath(m_upper->shape()); |
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49 | 50 | if(m_lower){ |
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50 | 51 | path.connectPath(m_lower->shape().toReversed()); |
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51 | 52 | } |
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52 | 53 | else{ |
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53 | 54 | QPointF first = path.pointAtPercent(0); |
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54 | 55 | QPointF last = path.pointAtPercent(1); |
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55 | 56 | path.lineTo(last.x(),m_clipRect.bottom()); |
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56 | 57 | path.lineTo(first.x(),m_clipRect.bottom()); |
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57 | 58 | } |
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58 | 59 | path.closeSubpath(); |
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59 | 60 | prepareGeometryChange(); |
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60 | 61 | m_path=path; |
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61 | 62 | m_rect=path.boundingRect(); |
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62 | 63 | update(); |
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63 | 64 | } |
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64 | 65 | |
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65 | 66 | void AreaChartItem::handleUpdated() |
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66 | 67 | { |
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67 | 68 | m_pointsVisible = m_series->pointsVisible(); |
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68 | 69 | m_linePen = m_series->pen(); |
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69 | 70 | m_brush = m_series->brush(); |
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70 | 71 | m_pointPen = m_series->pen(); |
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71 | 72 | m_pointPen.setWidthF(2*m_pointPen.width()); |
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72 | 73 | |
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73 | 74 | update(); |
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74 | 75 | } |
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75 | 76 | |
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76 | 77 | void AreaChartItem::handleDomainChanged(qreal minX, qreal maxX, qreal minY, qreal maxY) |
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77 | 78 | { |
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78 | 79 | m_upper->handleDomainChanged(minX,maxX,minY,maxY); |
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79 | 80 | if(m_lower) |
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80 | 81 | m_lower->handleDomainChanged(minX,maxX,minY,maxY); |
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81 | 82 | } |
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82 | 83 | |
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83 | 84 | void AreaChartItem::handleGeometryChanged(const QRectF& rect) |
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84 | 85 | { |
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85 | 86 | m_clipRect=rect.translated(-rect.topLeft()); |
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86 | 87 | setPos(rect.topLeft()); |
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87 | 88 | m_upper->handleGeometryChanged(rect); |
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88 | 89 | if(m_lower) |
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89 | 90 | m_lower->handleGeometryChanged(rect); |
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90 | 91 | } |
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91 | 92 | //painter |
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92 | 93 | |
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93 | 94 | void AreaChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) |
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94 | 95 | { |
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95 | 96 | Q_UNUSED(widget); |
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96 | 97 | Q_UNUSED(option); |
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97 | 98 | painter->save(); |
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98 | 99 | painter->setPen(m_linePen); |
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99 | 100 | painter->setBrush(m_brush); |
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100 | 101 | painter->setClipRect(m_clipRect); |
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101 | 102 | painter->drawPath(m_path); |
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102 | 103 | if(m_pointsVisible){ |
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103 | 104 | painter->setPen(m_pointPen); |
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104 | 105 | painter->drawPoints(m_upper->points()); |
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105 | 106 | if(m_lower) painter->drawPoints(m_lower->points()); |
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106 | 107 | } |
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107 | 108 | painter->restore(); |
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108 | 109 | } |
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109 | 110 | |
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110 | 111 | #include "moc_areachartitem_p.cpp" |
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111 | 112 | |
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112 | 113 | QTCOMMERCIALCHART_END_NAMESPACE |
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