| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | #include <private/polarchartcategoryaxisangular_p.h> |
| 5 | #include <private/chartpresenter_p.h> |
| 6 | #include <private/abstractchartlayout_p.h> |
| 7 | #include <QtCharts/QCategoryAxis> |
| 8 | #include <QtCore/QDebug> |
| 9 | |
| 10 | QT_BEGIN_NAMESPACE |
| 11 | |
| 12 | PolarChartCategoryAxisAngular::PolarChartCategoryAxisAngular(QCategoryAxis *axis, QGraphicsItem *item) |
| 13 | : PolarChartAxisAngular(axis, item, true) |
| 14 | { |
| 15 | QObject::connect(sender: axis, SIGNAL(categoriesChanged()), receiver: this, SLOT(handleCategoriesChanged())); |
| 16 | } |
| 17 | |
| 18 | PolarChartCategoryAxisAngular::~PolarChartCategoryAxisAngular() |
| 19 | { |
| 20 | } |
| 21 | |
| 22 | QList<qreal> PolarChartCategoryAxisAngular::calculateLayout() const |
| 23 | { |
| 24 | QCategoryAxis *catAxis = static_cast<QCategoryAxis *>(axis()); |
| 25 | int tickCount = catAxis->categoriesLabels().size() + 1; |
| 26 | QList<qreal> points; |
| 27 | |
| 28 | if (tickCount < 2) |
| 29 | return points; |
| 30 | |
| 31 | qreal range = max() - min(); |
| 32 | if (range > 0) { |
| 33 | points.resize(size: tickCount); |
| 34 | qreal scale = 360.0 / range; |
| 35 | qreal angle; |
| 36 | for (int i = 0; i < tickCount; ++i) { |
| 37 | if (i < tickCount - 1) |
| 38 | angle = (catAxis->startValue(categoryLabel: catAxis->categoriesLabels().at(i)) - min()) * scale; |
| 39 | else |
| 40 | angle = (catAxis->endValue(categoryLabel: catAxis->categoriesLabels().at(i: i - 1)) - min()) * scale; |
| 41 | points[i] = angle; |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | return points; |
| 46 | } |
| 47 | |
| 48 | void PolarChartCategoryAxisAngular::createAxisLabels(const QList<qreal> &layout) |
| 49 | { |
| 50 | Q_UNUSED(layout); |
| 51 | setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << QString()); |
| 52 | } |
| 53 | |
| 54 | void PolarChartCategoryAxisAngular::handleCategoriesChanged() |
| 55 | { |
| 56 | QGraphicsLayoutItem::updateGeometry(); |
| 57 | presenter()->layout()->invalidate(); |
| 58 | } |
| 59 | |
| 60 | QT_END_NAMESPACE |
| 61 | |
| 62 | #include "moc_polarchartcategoryaxisangular_p.cpp" |
| 63 |