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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd
** All rights reserved.
** For any questions to The Qt Company, please use contact form at http://qt.io
**
** This file is part of the Qt Charts module.
**
** Licensees holding valid commercial license for Qt may use this file in
** accordance with the Qt License Agreement provided with the Software
** or, alternatively, in accordance with the terms contained in a written
** agreement between you and The Qt Company.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.io
**
****************************************************************************/
#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();
}
#include "moc_polarchartcategoryaxisangular_p.cpp"
QT_CHARTS_END_NAMESPACE
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