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Clone from http://code.qt.io/qt/qtcharts.git

Experimenting
Marek Rosa -
r417:ac4db33427b7
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@@ -4,51 +4,69
4 4 QTCOMMERCIALCHART_BEGIN_NAMESPACE
5 5
6 6 SplinePresenter::SplinePresenter(QSplineSeries* series, QGraphicsObject *parent) :
7 ChartItem(parent),m_series(series),m_boundingRect()
7 LineChartItem(this, parent),m_series(series)//,m_boundingRect()
8 8 {
9 if (parent)
10 m_boundingRect = parent->boundingRect();
11 else
12 m_boundingRect = QRectF(10,50, 250, 250);
9 // if (parent)
10 // m_boundingRect = parent->boundingRect();
11 // else
12 // m_boundingRect = QRectF(10,50, 250, 250);
13 13 }
14 14
15 void SplinePresenter::handleGeometryChanged(const QRectF&)
16 {
17 update();
18 }
15 //void SplinePresenter::handleGeometryChanged(const QRectF&)
16 //{
17 // update();
18 //}
19 19
20 void SplinePresenter::handleDomainChanged(const Domain& domain)
21 {
22 //
23 }
20 //void SplinePresenter::handleDomainChanged(const Domain& domain)
21 //{
22 // //
23 //}
24 24
25 void SplinePresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
25 void SplinePresenter::updateGeometry()
26 26 {
27 Q_UNUSED(widget);
28 Q_UNUSED(option);
29 painter->save();
30
31 painter->setPen(Qt::SolidLine);
32
33 QPainterPath splinePath;
34 splinePath.moveTo(m_series->at(0));
35 for (int i = 0; i < m_series->count() - 1; i++)
36 {
37 painter->setPen(Qt::red);
38 splinePath.cubicTo(m_series->controlPoint(2 * i), m_series->controlPoint(2 * i + 1), m_series->at(i + 1));
39 painter->drawEllipse(m_series->at(i), 4, 4);
40
41 painter->setPen(Qt::blue);
42 painter->drawLine(m_series->at(i), m_series->controlPoint(2 * i));
43 painter->drawLine(m_series->at(i + 1), m_series->controlPoint(2 * i + 1));
44 painter->drawEllipse(m_series->controlPoint(2 * i), 4, 4);
45 painter->drawEllipse(m_series->controlPoint(2 * i + 1), 4, 4);
46 }
47 painter->setPen(Qt::red);
48 painter->drawPath(splinePath);
49 painter->restore();
27
28 if(m_data.size()==0) return;
29
30 prepareGeometryChange();
31 QPainterPath path;
32 const QPointF& point = m_data.at(0);
33 path.moveTo(point);
34
35 foreach( const QPointF& point , m_data) {
36 path.lineTo(point);
37 }
38
39 m_path = path;
40 m_rect = path.boundingRect();
50 41 }
51 42
43 //void SplinePresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
44 //{
45 // Q_UNUSED(widget);
46 // Q_UNUSED(option);
47 // painter->save();
48
49 // painter->setPen(Qt::SolidLine);
50
51 // QPainterPath splinePath;
52 // splinePath.moveTo(m_series->at(0));
53 // for (int i = 0; i < m_series->count() - 1; i++)
54 // {
55 // painter->setPen(Qt::red);
56 // splinePath.cubicTo(m_series->controlPoint(2 * i), m_series->controlPoint(2 * i + 1), m_series->at(i + 1));
57 // painter->drawEllipse(m_series->at(i), 4, 4);
58
59 // painter->setPen(Qt::blue);
60 // painter->drawLine(m_series->at(i), m_series->controlPoint(2 * i));
61 // painter->drawLine(m_series->at(i + 1), m_series->controlPoint(2 * i + 1));
62 // painter->drawEllipse(m_series->controlPoint(2 * i), 4, 4);
63 // painter->drawEllipse(m_series->controlPoint(2 * i + 1), 4, 4);
64 // }
65 // painter->setPen(Qt::red);
66 // painter->drawPath(splinePath);
67 // painter->restore();
68 //}
69
52 70 #include "moc_splinepresenter_p.cpp"
53 71
54 72 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -4,27 +4,30
4 4 #include "chartitem_p.h"
5 5 #include <QObject>
6 6 #include "qsplineseries.h"
7 #include "linechartitem_p.h"
7 8
8 9 QTCOMMERCIALCHART_BEGIN_NAMESPACE
9 10
10 class SplinePresenter : public QObject, public ChartItem
11 class SplinePresenter : public LineChartItem
11 12 {
12 13 Q_OBJECT
13 14 public:
14 15 SplinePresenter(QSplineSeries* series, QGraphicsObject *parent = 0);
15 16
16 QRectF boundingRect() const { return m_boundingRect; }
17 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
17 void updateGeometry();
18
19 // QRectF boundingRect() const { return m_boundingRect; }
20 // void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
18 21
19 22 signals:
20 23
21 24 public slots:
22 void handleDomainChanged(const Domain& domain);
23 void handleGeometryChanged(const QRectF& rect);
25 // void handleDomainChanged(const Domain& domain);
26 // void handleGeometryChanged(const QRectF& rect);
24 27
25 28 private:
26 29 QSplineSeries* m_series;
27 QRectF m_boundingRect;
30 // QRectF m_boundingRect;
28 31
29 32 };
30 33
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