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29
30#include <private/polarchartvalueaxisradial_p.h>
31#include <private/chartpresenter_p.h>
32#include <private/abstractchartlayout_p.h>
33
34QT_CHARTS_BEGIN_NAMESPACE
35
36PolarChartValueAxisRadial::PolarChartValueAxisRadial(QValueAxis *axis, QGraphicsItem *item)
37 : PolarChartAxisRadial(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
45PolarChartValueAxisRadial::~PolarChartValueAxisRadial()
46{
47}
48
49QVector<qreal> PolarChartValueAxisRadial::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 = (axisGeometry().width() / 2) / qreal(tickCount - 1);
58
59 for (int i = 0; i < tickCount; ++i) {
60 qreal radialCoordinate = qreal(i) * d;
61 points[i] = radialCoordinate;
62 }
63
64 return points;
65}
66
67void PolarChartValueAxisRadial::createAxisLabels(const QVector<qreal> &layout)
68{
69 setLabels(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}
73
74void PolarChartValueAxisRadial::handleTickCountChanged(int tick)
75{
76 Q_UNUSED(tick);
77 QGraphicsLayoutItem::updateGeometry();
78 if (presenter())
79 presenter()->layout()->invalidate();
80}
81
82void PolarChartValueAxisRadial::handleMinorTickCountChanged(int tick)
83{
84 Q_UNUSED(tick);
85 QGraphicsLayoutItem::updateGeometry();
86 if (presenter())
87 presenter()->layout()->invalidate();
88}
89
90void PolarChartValueAxisRadial::handleLabelFormatChanged(const QString &format)
91{
92 Q_UNUSED(format);
93 QGraphicsLayoutItem::updateGeometry();
94 if (presenter())
95 presenter()->layout()->invalidate();
96}
97
98QT_CHARTS_END_NAMESPACE
99
100#include "moc_polarchartvalueaxisradial_p.cpp"
101

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