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Drop shadow in scatter
Tero Ahola -
r346:d59509c2ed03
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@@ -1,134 +1,129
1 #include "scatterpresenter_p.h"
1 #include "scatterpresenter_p.h"
2 #include "qscatterseries.h"
2 #include "qscatterseries.h"
3 #include <QPen>
3 #include <QPen>
4 #include <QPainter>
4 #include <QPainter>
5 #include <QGraphicsScene>
5 #include <QGraphicsScene>
6 #include <QGraphicsSceneMouseEvent>
6 #include <QGraphicsSceneMouseEvent>
7 #include <QGraphicsDropShadowEffect>
7 #include <QDebug>
8 #include <QDebug>
8 #include <QTime>
9 #include <QTime>
9
10
10 QTCOMMERCIALCHART_BEGIN_NAMESPACE
11 QTCOMMERCIALCHART_BEGIN_NAMESPACE
11
12
12 ScatterPresenter::ScatterPresenter(QScatterSeries *series, QGraphicsObject *parent) :
13 ScatterPresenter::ScatterPresenter(QScatterSeries *series, QGraphicsObject *parent) :
13 ChartItem(parent),
14 ChartItem(parent),
14 m_series(series),
15 m_series(series),
15 m_boundingRect(),
16 m_boundingRect(),
16 //m_markerColor(QColor()),
17 // m_markerColor(QColor(255, 0, 0)),
18 m_visibleChartArea()
17 m_visibleChartArea()
19 {
18 {
20 if (parent)
19 if (parent)
21 m_boundingRect = parent->boundingRect();
20 m_boundingRect = parent->boundingRect();
22
21
23 if (series) {
22 if (series) {
24 connect(series, SIGNAL(changed()), this, SLOT(handleModelChanged()));
23 connect(series, SIGNAL(changed()), this, SLOT(handleModelChanged()));
25 }
24 }
25
26 QGraphicsDropShadowEffect *dropShadow = new QGraphicsDropShadowEffect();
27 dropShadow->setOffset(2.0);
28 setGraphicsEffect(dropShadow);
26 }
29 }
27
30
28 void ScatterPresenter::handleDomainChanged(const Domain& domain)
31 void ScatterPresenter::handleDomainChanged(const Domain& domain)
29 {
32 {
30 m_visibleChartArea = domain;
33 m_visibleChartArea = domain;
31 changeGeometry();
34 changeGeometry();
32 }
35 }
33
36
34 void ScatterPresenter::handleGeometryChanged(const QRectF& rect)
37 void ScatterPresenter::handleGeometryChanged(const QRectF& rect)
35 {
38 {
36 m_boundingRect = rect;
39 m_boundingRect = rect;
37 changeGeometry();
40 changeGeometry();
38 }
41 }
39
42
40 void ScatterPresenter::handleModelChanged()
43 void ScatterPresenter::handleModelChanged()
41 {
44 {
42 // TODO: more fine grained modelChanged signaling
45 // TODO: more fine grained modelChanged signaling
43 changeGeometry();
46 changeGeometry();
44 }
47 }
45
48
46 void ScatterPresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
49 void ScatterPresenter::paint(QPainter *painter, const QStyleOptionGraphicsItem */*option*/, QWidget */*widget*/)
47 {
50 {
48 painter->save();
51 painter->save();
49 painter->setClipRect(m_boundingRect);
52 painter->setClipRect(m_boundingRect);
50
53
51 // Paint the shape
54 // Paint the shape
52 // The custom settings in series override those defined by the theme
55 // The custom settings in series override those defined by the theme
53 QPen pen = m_markerPen;
56 QPen pen = m_markerPen;
54 if (m_series->markerPen().color().isValid())
57 if (m_series->markerPen().color().isValid())
55 pen = m_series->markerPen();
58 pen = m_series->markerPen();
56 if (m_series->markerBrush().color().isValid())
59 if (m_series->markerBrush().color().isValid())
57 painter->setBrush(m_series->markerBrush());
60 painter->setBrush(m_series->markerBrush());
58 else
61 else
59 painter->setBrush(m_markerBrush);
62 painter->setBrush(m_markerBrush);
60 painter->setPen(pen);
63 painter->setPen(pen);
61 painter->drawPath(m_path);
64 painter->drawPath(m_path);
62
65
63 // TODO: how to draw a drop shadow?
64 QPen dropShadowPen(QColor(0, 0, 0, 70));
65 dropShadowPen.setWidth(3);
66 painter->setPen(dropShadowPen);
67 painter->setBrush(Qt::NoBrush);
68 painter->setRenderHint(QPainter::Antialiasing);
69 painter->drawPath(m_path.translated(2, 2));
70
71 painter->restore();
66 painter->restore();
72 }
67 }
73
68
74 void ScatterPresenter::mousePressEvent(QGraphicsSceneMouseEvent *event)
69 void ScatterPresenter::mousePressEvent(QGraphicsSceneMouseEvent *event)
75 {
70 {
76 qDebug() << "ScatterPresenter::mousePressEvent" << event << " cont: "
71 qDebug() << "ScatterPresenter::mousePressEvent" << event << " cont: "
77 << m_path.contains(event->lastPos());
72 << m_path.contains(event->lastPos());
78
73
79 if (m_path.contains(event->lastPos()))
74 if (m_path.contains(event->lastPos()))
80 emit clicked();
75 emit clicked();
81 }
76 }
82
77
83 void ScatterPresenter::changeGeometry()
78 void ScatterPresenter::changeGeometry()
84 {
79 {
85 if (m_boundingRect.isValid()) {
80 if (m_boundingRect.isValid()) {
86 prepareGeometryChange();
81 prepareGeometryChange();
87 qreal scalex = m_boundingRect.width() / m_visibleChartArea.spanX();
82 qreal scalex = m_boundingRect.width() / m_visibleChartArea.spanX();
88 qreal scaley = m_boundingRect.height() / m_visibleChartArea.spanY();
83 qreal scaley = m_boundingRect.height() / m_visibleChartArea.spanY();
89
84
90 int shape = m_series->markerShape();
85 int shape = m_series->markerShape();
91 m_path = QPainterPath();
86 m_path = QPainterPath();
92
87
93 foreach (QPointF point, m_series->data()) {
88 foreach (QPointF point, m_series->data()) {
94 // Convert relative coordinates to absolute pixel coordinates that can be used for drawing
89 // Convert relative coordinates to absolute pixel coordinates that can be used for drawing
95 qreal x = m_boundingRect.left() + point.x() * scalex - m_visibleChartArea.m_minX * scalex;
90 qreal x = m_boundingRect.left() + point.x() * scalex - m_visibleChartArea.m_minX * scalex;
96 qreal y = m_boundingRect.bottom() - point.y() * scaley + m_visibleChartArea.m_minY * scaley;
91 qreal y = m_boundingRect.bottom() - point.y() * scaley + m_visibleChartArea.m_minY * scaley;
97
92
98 if (scene()->width() > x && scene()->height() > y) {
93 if (scene()->width() > x && scene()->height() > y) {
99 switch (shape) {
94 switch (shape) {
100 case QScatterSeries::MarkerShapeDefault:
95 case QScatterSeries::MarkerShapeDefault:
101 // Fallthrough, defaults to circle
96 // Fallthrough, defaults to circle
102 case QScatterSeries::MarkerShapeCircle:
97 case QScatterSeries::MarkerShapeCircle:
103 m_path.addEllipse(x, y, 9, 9);
98 m_path.addEllipse(x, y, 9, 9);
104 break;
99 break;
105 case QScatterSeries::MarkerShapePoint:
100 case QScatterSeries::MarkerShapePoint:
106 m_path.addEllipse(x, y, 2, 2);
101 m_path.addEllipse(x, y, 2, 2);
107 break;
102 break;
108 case QScatterSeries::MarkerShapeRectangle:
103 case QScatterSeries::MarkerShapeRectangle:
109 m_path.addRect(x, y, 9, 9);
104 m_path.addRect(x, y, 9, 9);
110 break;
105 break;
111 case QScatterSeries::MarkerShapeTiltedRectangle: {
106 case QScatterSeries::MarkerShapeTiltedRectangle: {
112 // TODO:
107 // TODO:
113 // static const QPointF points[4] = {
108 // static const QPointF points[4] = {
114 // QPointF(-1.0 + x, 0.0 + y),
109 // QPointF(-1.0 + x, 0.0 + y),
115 // QPointF(0.0 + x, 1.0 + y),
110 // QPointF(0.0 + x, 1.0 + y),
116 // QPointF(1.0 + x, 0.0 + y),
111 // QPointF(1.0 + x, 0.0 + y),
117 // QPointF(0.0 + x, -1.0 + y)
112 // QPointF(0.0 + x, -1.0 + y)
118 // };
113 // };
119 //m_path.addPolygon(QPolygon(4, &points));
114 //m_path.addPolygon(QPolygon(4, &points));
120 break;
115 break;
121 }
116 }
122 default:
117 default:
123 // TODO: implement the rest of the shapes
118 // TODO: implement the rest of the shapes
124 Q_ASSERT(false);
119 Q_ASSERT(false);
125 break;
120 break;
126 }
121 }
127 }
122 }
128 }
123 }
129 }
124 }
130 }
125 }
131
126
132 #include "moc_scatterpresenter_p.cpp"
127 #include "moc_scatterpresenter_p.cpp"
133
128
134 QTCOMMERCIALCHART_END_NAMESPACE
129 QTCOMMERCIALCHART_END_NAMESPACE
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