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/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd
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** All rights reserved.
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** For any questions to The Qt Company, please use contact form at http://qt.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** agreement between you and The Qt Company.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.io
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**
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****************************************************************************/
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#include <private/polarchartcategoryaxisangular_p.h>
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#include <private/chartpresenter_p.h>
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#include <private/abstractchartlayout_p.h>
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#include <QtCharts/QCategoryAxis>
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#include <QtCore/QDebug>
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QT_CHARTS_BEGIN_NAMESPACE
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PolarChartCategoryAxisAngular::PolarChartCategoryAxisAngular(QCategoryAxis *axis, QGraphicsItem *item)
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: PolarChartAxisAngular(axis, item, true)
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{
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QObject::connect(axis, SIGNAL(categoriesChanged()), this, SLOT(handleCategoriesChanged()));
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}
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PolarChartCategoryAxisAngular::~PolarChartCategoryAxisAngular()
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{
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}
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QVector<qreal> PolarChartCategoryAxisAngular::calculateLayout() const
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{
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QCategoryAxis *catAxis = static_cast<QCategoryAxis *>(axis());
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int tickCount = catAxis->categoriesLabels().count() + 1;
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QVector<qreal> points;
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if (tickCount < 2)
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return points;
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qreal range = max() - min();
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if (range > 0) {
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points.resize(tickCount);
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qreal scale = 360.0 / range;
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qreal angle;
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for (int i = 0; i < tickCount; ++i) {
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if (i < tickCount - 1)
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angle = (catAxis->startValue(catAxis->categoriesLabels().at(i)) - min()) * scale;
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else
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angle = (catAxis->endValue(catAxis->categoriesLabels().at(i - 1)) - min()) * scale;
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points[i] = angle;
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}
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}
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return points;
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}
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void PolarChartCategoryAxisAngular::createAxisLabels(const QVector<qreal> &layout)
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{
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Q_UNUSED(layout);
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setLabels(static_cast<QCategoryAxis *>(axis())->categoriesLabels() << QString());
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}
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void PolarChartCategoryAxisAngular::handleCategoriesChanged()
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{
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QGraphicsLayoutItem::updateGeometry();
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presenter()->layout()->invalidate();
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}
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#include "moc_polarchartcategoryaxisangular_p.cpp"
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QT_CHARTS_END_NAMESPACE
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