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Integrated draft version of pie series
Tero Ahola -
r51:73eb5fa755de
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@@ -0,0 +1,75
1 #include "pieslice.h"
2 #include <QPainter>
3 #include <QDebug>
4
5 QTCOMMERCIALCHART_BEGIN_NAMESPACE
6
7 PieSlice::PieSlice(const QColor& color, qreal startAngle, qreal span)
8 : m_color(color),
9 m_startAngle(startAngle),
10 m_span(span)
11 {
12 setAcceptHoverEvents(true);
13 }
14
15 PieSlice::~PieSlice()
16 {
17 }
18
19 QRectF PieSlice::boundingRect() const
20 {
21 return parentItem()->boundingRect();
22 }
23
24 QPainterPath PieSlice::shape() const
25 {
26 qreal angle = (-m_startAngle) + (90);
27 qreal span = -m_span;
28
29 QPainterPath path;
30 path.moveTo(boundingRect().center());
31 path.arcTo(boundingRect(), angle, span);
32
33 // TODO: draw the shape so that it might have a hole in the center
34 // - Sin & Cos will be needed to find inner/outer arc endpoints
35
36 // dx, dy are offsets from the center
37 //qreal l = boundingRect().height();
38 //qreal dx = qSin(angle*(M_PI/180)) * l;
39 //qreal dy = qCos(angle*(M_PI/180)) * l;
40
41 // TODO: exploded slice?
42
43 return path;
44 }
45
46 void PieSlice::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
47 {
48 // Setup painter
49 painter->setBrush(m_color);
50 QPen pen;
51 //pen.setColor(m_color.darker());
52 pen.setColor(Qt::gray);
53 pen.setWidth(1);
54 painter->setPen(pen);
55
56 // From Qt docs:
57 // The startAngle and spanAngle must be specified in 1/16th of a degree, i.e. a full circle equals 5760 (16 * 360).
58 // Positive values for the angles mean counter-clockwise while negative values mean the clockwise direction.
59 // Zero degrees is at the 3 o'clock position.
60 //
61 // For sake of simplicity convert this so that zero degrees is at 12 o'clock and full circle is 360.
62 //qreal angle = (-m_startAngle*16) + (90*16);
63 //qreal span = -m_span*16;
64 //painter->drawPie(boundingRect(), angle, span);
65
66 painter->drawPath(shape());
67 }
68
69 void PieSlice::hoverEnterEvent(QGraphicsSceneHoverEvent * event)
70 {
71 QGraphicsItem::hoverEnterEvent(event);
72 qDebug() << "hover" << m_color << m_startAngle << m_span;
73 }
74
75 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -0,0 +1,31
1 #ifndef PIESLICE_H
2 #define PIESLICE_H
3
4 #include "qchartglobal.h"
5 #include <QGraphicsItem>
6 #include <QRectF>
7 #include <QColor>
8
9 QTCOMMERCIALCHART_BEGIN_NAMESPACE
10
11 class PieSlice : public QGraphicsItem
12 {
13 public:
14 PieSlice(const QColor& color, qreal startAngle, qreal span);
15 ~PieSlice();
16
17 public: // from QGraphicsItem
18 QRectF boundingRect() const;
19 QPainterPath shape() const;
20 void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
21 void hoverEnterEvent(QGraphicsSceneHoverEvent * event);
22
23 private:
24 QColor m_color;
25 qreal m_startAngle;
26 qreal m_span;
27 };
28
29 QTCOMMERCIALCHART_END_NAMESPACE
30
31 #endif // PIESLICE_H
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@@ -0,0 +1,54
1 #include "qpieseries.h"
2 #include "pieslice.h"
3 #include <QGraphicsObject>
4 #include <QDebug>
5
6 QTCOMMERCIALCHART_BEGIN_NAMESPACE
7
8 QPieSeries::QPieSeries(QList<qreal> x, QGraphicsObject *parent) :
9 QChartSeries(parent),
10 m_x(x)
11 {
12 }
13
14 QPieSeries::~QPieSeries()
15 {
16 }
17
18 void QPieSeries::chartSizeChanged(QRectF rect, qreal xscale, qreal yscale)
19 {
20 qreal fullPie = 360;
21 qreal total = 0;
22 foreach (qreal value, m_x)
23 total += value;
24
25 // We must have a parent for the graphics items we create
26 // TODO: maybe QChartSeries needs to be a QGraphicsObject to make this clear for the users?
27 QGraphicsItem *parentItem = qobject_cast<QGraphicsItem *>(parent());
28 Q_ASSERT(parentItem);
29 qreal angle = 0;
30 foreach (qreal value, m_x) {
31 qreal span = value / total * fullPie;
32 PieSlice *slice = new PieSlice(randomColor(), angle, span);
33 slice->setParentItem(parentItem);
34 m_slices.append(slice);
35 angle += span;
36 }
37 }
38
39 QColor QPieSeries::randomColor()
40 {
41 QColor c;
42 c.setRed(qrand() % 255);
43 c.setGreen(qrand() % 255);
44 c.setBlue(qrand() % 255);
45 return c;
46 }
47
48 void QPieSeries::setData(QList<int> data)
49 {
50 }
51
52 #include "moc_qpieseries.cpp"
53
54 QTCOMMERCIALCHART_END_NAMESPACE
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@@ -0,0 +1,40
1 #ifndef PIESERIES_H
2 #define PIESERIES_H
3
4 #include "qchartseries.h"
5 #include <QObject>
6 #include <QRectF>
7 #include <QColor>
8
9 class QGraphicsObject;
10 QTCOMMERCIALCHART_BEGIN_NAMESPACE
11 class PieSlice;
12
13 class QTCOMMERCIALCHART_EXPORT QPieSeries : public QChartSeries
14 {
15 Q_OBJECT
16 public:
17 // TODO: use a generic data class instead of x and y
18 QPieSeries(QList<qreal> x, QGraphicsObject *parent = 0);
19 ~QPieSeries();
20 QColor randomColor();
21 void setData(QList<int> data);
22
23 public: // from QChartSeries
24 QChartSeriesType type() const { return QChartSeries::SeriesTypePie; }
25
26 public Q_SLOTS:
27 void chartSizeChanged(QRectF rect, qreal xscale, qreal yscale);
28
29 private:
30 //Q_DECLARE_PRIVATE(QPieSeries)
31 Q_DISABLE_COPY(QPieSeries)
32 // TODO: move the followin to internal impl
33 QList<qreal> m_x;
34 QList<PieSlice*> m_slices;
35 QSizeF m_size;
36 };
37
38 QTCOMMERCIALCHART_END_NAMESPACE
39
40 #endif // PIESERIES_H
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@@ -1,4 +1,4
1 CONFIG+=integrated_build #remove if you want to build against installed libs
1 #CONFIG+=integrated_build #remove if you want to build against installed libs
2 2
3 3 CHART_BUILD_HEADER_DIR = $$PWD/include
4 4 CHART_BUILD_LIB_DIR = $$PWD/lib
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@@ -2,6 +2,7
2 2 #include "qchartseries.h"
3 3 #include "qscatterseries.h"
4 4 #include "qscatterseries_p.h"
5 #include "qpieseries.h"
5 6 #include "qxychartseries.h"
6 7 #include "xylinechartitem_p.h"
7 8 #include "xyplotdomain_p.h"
@@ -86,34 +87,45 void QChart::addSeries(QChartSeries* series)
86 87 d->m_xyLineChartItems<<item;
87 88 break;
88 89 }
89 case QChartSeries::SeriesTypeScatter: {
90 QScatterSeries *scatter = qobject_cast<QScatterSeries *>(series);
91 if (scatter) {
92 scatter->d->setParentItem(this);
93 scene()->addItem(scatter->d);
94 }
95 break;
96 }
90 // TODO: Not tested:
91 // case QChartSeries::SeriesTypeScatter: {
92 // QScatterSeries *scatter = qobject_cast<QScatterSeries *>(series);
93 // if (scatter) {
94 // scatter->d->setParentItem(this);
95 // scene()->addItem(scatter->d);
96 // }
97 // break;
98 // }
97 99 }
98 100 }
99 101
100 102 QChartSeries* QChart::createSeries(QList<qreal> x, QList<qreal> y, QChartSeries::QChartSeriesType type)
101 103 {
102 // TODO: support also other types in addition to scatter
103 Q_ASSERT(type == QChartSeries::SeriesTypeScatter);
104 QChartSeries *series = 0;
104 // TODO: support also other types; not only scatter and pie
105 Q_ASSERT(type == QChartSeries::SeriesTypeScatter
106 || type == QChartSeries::SeriesTypePie);
105 107
106 108 switch (type) {
107 109 case QChartSeries::SeriesTypeScatter: {
108 110 QScatterSeries *scatterSeries = new QScatterSeries(x, y, this);
111 connect(this, SIGNAL(sizeChanged(QRectF, qreal, qreal)),
112 scatterSeries, SLOT(chartSizeChanged(QRectF, qreal, qreal)));
109 113 scatterSeries->d->setParentItem(this);
110 break;
114 return scatterSeries;
115 }
116 case QChartSeries::SeriesTypePie: {
117 // TODO: we now have also a list of y values as a parameter, it is ignored
118 // we should use a generic data class instead of list of x and y values
119 QPieSeries *pieSeries = new QPieSeries(x, this);
120 connect(this, SIGNAL(sizeChanged(QRectF, qreal, qreal)),
121 pieSeries, SLOT(chartSizeChanged(QRectF, qreal, qreal)));
122 return pieSeries;
111 123 }
112 124 default:
113 125 break;
114 126 }
115 127
116 return series;
128 return 0;
117 129 }
118 130
119 131 void QChart::setSize(const QSizeF& size)
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@@ -14,7 +14,7 public:
14 14 SeriesTypeLine = 0,
15 15 // SeriesTypeArea,
16 16 // SeriesTypeBar,
17 // SeriesTypePie,
17 SeriesTypePie,
18 18 SeriesTypeScatter
19 19 // SeriesTypeSpline
20 20 };
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@@ -56,7 +56,6 QScatterSeries::QScatterSeries(QList<qreal> x, QList<qreal> y, QObject *parent)
56 56 QChartSeries(parent),
57 57 d(new QScatterSeriesPrivate(x, y, qobject_cast<QGraphicsItem *> (parent)))
58 58 {
59 connect(parent, SIGNAL(sizeChanged(QRectF, qreal, qreal)), this, SLOT(chartSizeChanged(QRectF, qreal, qreal)));
60 59 }
61 60
62 61 void QScatterSeries::chartSizeChanged(QRectF rect, qreal xscale, qreal yscale)
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@@ -12,11 +12,11 class QTCOMMERCIALCHART_EXPORT QScatterSeries : public QChartSeries
12 12 Q_OBJECT
13 13 public:
14 14 //QScatterSeries(QSeriesData *data, QObject *chart);
15 QScatterSeries(QList<qreal> x, QList<qreal> y, QObject *chart = 0);
15 QScatterSeries(QList<qreal> x, QList<qreal> y, QObject *parent = 0);
16 16 ~QScatterSeries();
17 17
18 18 public: // from QChartSeries
19 virtual QChartSeriesType type() const { return QChartSeries::SeriesTypeScatter; }
19 QChartSeriesType type() const { return QChartSeries::SeriesTypeScatter; }
20 20
21 21 public Q_SLOTS:
22 22 void chartSizeChanged(QRectF rect, qreal xscale, qreal yscale);
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@@ -17,20 +17,24 SOURCES += \
17 17 xylinechart/xygrid.cpp \
18 18 xylinechart/xyplotdomain.cpp \
19 19 qscatterseries.cpp \
20 qpieseries.cpp \
20 21 qchart.cpp \
21 22 axis.cpp \
22 qchartwidget.cpp
23 qchartwidget.cpp \
24 pieslice.cpp
23 25
24 26 PRIVATE_HEADERS += \
25 27 xylinechart/xylinechartitem_p.h \
26 28 xylinechart/xyplotdomain_p.h \
27 29 xylinechart/xygrid_p.h \
28 30 qscatterseries_p.h \
31 pieslice.h \
29 32 axis_p.h
30 33
31 34 PUBLIC_HEADERS += \
32 35 qchartseries.h \
33 36 qscatterseries.h \
37 qpieseries.h \
34 38 qchart.h \
35 39 qchartwidget.h \
36 40 qchartglobal.h \
@@ -73,3 +77,5 QMAKE_EXTRA_TARGETS += chartversion
73 77
74 78 unix:QMAKE_DISTCLEAN += -r $$CHART_BUILD_HEADER_DIR $$CHART_BUILD_LIB_DIR
75 79 win32:QMAKE_DISTCLEAN += /Q $$CHART_BUILD_HEADER_DIR $$CHART_BUILD_LIB_DIR
80
81
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@@ -142,6 +142,8 void MainWidget::addSeries(QString series, QString data)
142 142 if (series == "Scatter") {
143 143 /*QChartSeries* scatterSeries = */
144 144 m_chartWidget->createSeries(x, y, QChartSeries::SeriesTypeScatter);
145 } else if (series == "Pie") {
146 m_chartWidget->createSeries(x, y, QChartSeries::SeriesTypePie);
145 147 } else if (series == "Line") {
146 148 m_chartWidget->addSeries(series0);
147 149 } else {
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