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

source code of qtcharts/src/charts/axis/datetimeaxis/polarchartdatetimeaxisangular.cpp