| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
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| ** Commercial License Usage |
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| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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| ****************************************************************************/ |
| |
| #include <private/polarchartcategoryaxisangular_p.h> |
| #include <private/chartpresenter_p.h> |
| #include <private/abstractchartlayout_p.h> |
| #include <QtCharts/QCategoryAxis> |
| #include <QtCore/QDebug> |
| |
| QT_CHARTS_BEGIN_NAMESPACE |
| |
| PolarChartCategoryAxisAngular::PolarChartCategoryAxisAngular(QCategoryAxis *axis, QGraphicsItem *item) |
| : PolarChartAxisAngular(axis, item, true) |
| { |
| QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged())); |
| } |
| |
| PolarChartCategoryAxisAngular::~PolarChartCategoryAxisAngular() |
| { |
| } |
| |
| QVector<qreal> PolarChartCategoryAxisAngular::calculateLayout() const |
| { |
| QCategoryAxis *catAxis = static_cast<QCategoryAxis *>(axis()); |
| int tickCount = catAxis->categoriesLabels().count() + 1; |
| QVector<qreal> points; |
| |
| if (tickCount < 2) |
| return points; |
| |
| qreal range = max() - min(); |
| if (range > 0) { |
| points.resize(tickCount); |
| qreal scale = 360.0 / range; |
| qreal angle; |
| for (int i = 0; i < tickCount; ++i) { |
| if (i < tickCount - 1) |
| angle = (catAxis->startValue(catAxis->categoriesLabels().at(i)) - min()) * scale; |
| else |
| angle = (catAxis->endValue(catAxis->categoriesLabels().at(i - 1)) - min()) * scale; |
| points[i] = angle; |
| } |
| } |
| |
| return points; |
| } |
| |
| void PolarChartCategoryAxisAngular::createAxisLabels(const QVector<qreal> &layout) |
| { |
| Q_UNUSED(layout); |
| setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << QString()); |
| } |
| |
| void PolarChartCategoryAxisAngular::handleCategoriesChanged() |
| { |
| QGraphicsLayoutItem::updateGeometry(); |
| presenter()->layout()->invalidate(); |
| } |
| |
| QT_CHARTS_END_NAMESPACE |
| |
| #include "moc_polarchartcategoryaxisangular_p.cpp" |