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29
30#include <private/polarchartlayout_p.h>
31#include <private/chartpresenter_p.h>
32#include <private/polarchartaxis_p.h>
33#include <QtCore/QDebug>
34
35QT_CHARTS_BEGIN_NAMESPACE
36
37PolarChartLayout::PolarChartLayout(ChartPresenter *presenter)
38 : AbstractChartLayout(presenter)
39{
40}
41
42PolarChartLayout::~PolarChartLayout()
43{
44}
45
46QRectF PolarChartLayout::calculateAxisGeometry(const QRectF &geometry,
47 const QList<ChartAxisElement *> &axes,
48 bool update) const
49{
50 // How to handle multiple angular/radial axes?
51 qreal axisRadius = geometry.height() / 2.0;
52 if (geometry.width() < geometry.height())
53 axisRadius = geometry.width() / 2.0;
54
55 int titleHeight = 0;
56 foreach (ChartAxisElement *chartAxis, axes) {
57 if (!chartAxis->isVisible())
58 continue;
59
60 PolarChartAxis *polarChartAxis = static_cast<PolarChartAxis *>(chartAxis);
61 qreal radius = polarChartAxis->preferredAxisRadius(maxSize: geometry.size());
62 if (radius < axisRadius)
63 axisRadius = radius;
64
65 if (chartAxis->axis()->orientation() == Qt::Horizontal
66 && chartAxis->axis()->isTitleVisible()
67 && !chartAxis->axis()->titleText().isEmpty()) {
68 // If axis has angular title, adjust geometry down by the space title takes
69 QRectF dummyRect = ChartPresenter::textBoundingRect(font: chartAxis->axis()->titleFont(), text: chartAxis->axis()->titleText());
70 titleHeight = (dummyRect.height() / 2.0) + chartAxis->titlePadding();
71 }
72 }
73
74 QRectF axisRect;
75 axisRect.setSize(QSizeF(axisRadius * 2.0, axisRadius * 2.0));
76 axisRect.moveCenter(p: geometry.center());
77 axisRect.adjust(xp1: 0, yp1: titleHeight, xp2: 0, yp2: titleHeight);
78
79 if (update) {
80 foreach (ChartAxisElement *chartAxis, axes)
81 chartAxis->setGeometry(axis: axisRect, grid: QRectF());
82 }
83
84 return axisRect;
85}
86
87QRectF PolarChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *> &axes) const
88{
89 Q_UNUSED(axes);
90 return minimum;
91}
92
93QT_CHARTS_END_NAMESPACE
94

source code of qtcharts/src/charts/layout/polarchartlayout.cpp