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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/polarchartlogvalueaxisangular_p.h>
#include <private/abstractchartlayout_p.h>
#include <private/chartpresenter_p.h>
#include <QtCharts/QLogValueAxis>
#include <QtCore/QtMath>
#include <QtCore/QDebug>
#include <cmath>
QT_CHARTS_BEGIN_NAMESPACE
PolarChartLogValueAxisAngular::PolarChartLogValueAxisAngular(QLogValueAxis *axis, QGraphicsItem *item)
: PolarChartAxisAngular(axis, item)
{
QObject::connect(axis, SIGNAL(baseChanged(qreal)), this, SLOT(handleBaseChanged(qreal)));
QObject::connect(axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));
}
PolarChartLogValueAxisAngular::~PolarChartLogValueAxisAngular()
{
}
QVector<qreal> PolarChartLogValueAxisAngular::calculateLayout() const
{
QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
const qreal logMax = std::log10(logValueAxis->max()) / std::log10(logValueAxis->base());
const qreal logMin = std::log10(logValueAxis->min()) / std::log10(logValueAxis->base());
const qreal startEdge = logMin < logMax ? logMin : logMax;
const qreal delta = 360.0 / qAbs(logMax - logMin);
const qreal initialSpan = (qCeil(startEdge) - startEdge) * delta;
int tickCount = qAbs(qCeil(logMax) - qCeil(logMin));
QVector<qreal> points;
points.resize(tickCount);
for (int i = 0; i < tickCount; ++i) {
qreal angularCoordinate = initialSpan + (delta * qreal(i));
points[i] = angularCoordinate;
}
return points;
}
void PolarChartLogValueAxisAngular::createAxisLabels(const QVector<qreal> &layout)
{
QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
setLabels(createLogValueLabels(logValueAxis->min(),
logValueAxis->max(),
logValueAxis->base(),
layout.size(),
logValueAxis->labelFormat()));
}
void PolarChartLogValueAxisAngular::handleBaseChanged(qreal base)
{
Q_UNUSED(base);
QGraphicsLayoutItem::updateGeometry();
if (presenter())
presenter()->layout()->invalidate();
}
void PolarChartLogValueAxisAngular::handleLabelFormatChanged(const QString &format)
{
Q_UNUSED(format);
QGraphicsLayoutItem::updateGeometry();
if (presenter())
presenter()->layout()->invalidate();
}
#include "moc_polarchartlogvalueaxisangular_p.cpp"
QT_CHARTS_END_NAMESPACE
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