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29
30#include <private/polarchartvalueaxisangular_p.h>
31#include <private/chartpresenter_p.h>
32#include <private/abstractchartlayout_p.h>
33
34QT_CHARTS_BEGIN_NAMESPACE
35
36PolarChartValueAxisAngular::PolarChartValueAxisAngular(QValueAxis *axis, QGraphicsItem *item)
37 : PolarChartAxisAngular(axis, item)
38{
39 QObject::connect(sender: axis, SIGNAL(tickCountChanged(int)), receiver: this, SLOT(handleTickCountChanged(int)));
40 QObject::connect(sender: axis, SIGNAL(minorTickCountChanged(int)),
41 receiver: this, SLOT(handleMinorTickCountChanged(int)));
42 QObject::connect(sender: axis, SIGNAL(labelFormatChanged(QString)), receiver: this, SLOT(handleLabelFormatChanged(QString)));
43}
44
45PolarChartValueAxisAngular::~PolarChartValueAxisAngular()
46{
47}
48
49QVector<qreal> PolarChartValueAxisAngular::calculateLayout() const
50{
51 int tickCount = static_cast<QValueAxis *>(axis())->tickCount();
52 Q_ASSERT(tickCount >= 2);
53
54 QVector<qreal> points;
55 points.resize(size: tickCount);
56
57 const qreal d = 360.0 / qreal(tickCount - 1);
58
59 for (int i = 0; i < tickCount; ++i) {
60 qreal angularCoordinate = qreal(i) * d;
61 points[i] = angularCoordinate;
62 }
63
64 return points;
65}
66
67void PolarChartValueAxisAngular::createAxisLabels(const QVector<qreal> &layout)
68{
69 QStringList labelList = createValueLabels(max: min(), min: max(), ticks: layout.size(), tickInterval: 0.0, tickAnchor: 0.0,
70 tickType: QValueAxis::TicksFixed,
71 format: static_cast<QValueAxis *>(axis())->labelFormat());
72 setLabels(labelList);
73}
74
75void PolarChartValueAxisAngular::handleTickCountChanged(int tick)
76{
77 Q_UNUSED(tick);
78 QGraphicsLayoutItem::updateGeometry();
79 if (presenter())
80 presenter()->layout()->invalidate();
81}
82
83void PolarChartValueAxisAngular::handleMinorTickCountChanged(int tick)
84{
85 Q_UNUSED(tick);
86 QGraphicsLayoutItem::updateGeometry();
87 if (presenter())
88 presenter()->layout()->invalidate();
89}
90
91void PolarChartValueAxisAngular::handleLabelFormatChanged(const QString &format)
92{
93 Q_UNUSED(format);
94 QGraphicsLayoutItem::updateGeometry();
95 if (presenter())
96 presenter()->layout()->invalidate();
97}
98
99QT_CHARTS_END_NAMESPACE
100
101#include "moc_polarchartvalueaxisangular_p.cpp"
102

source code of qtcharts/src/charts/axis/valueaxis/polarchartvalueaxisangular.cpp