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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <private/polarchartlogvalueaxisangular_p.h>
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#include <private/abstractchartlayout_p.h>
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#include <private/chartpresenter_p.h>
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#include <QtCharts/QLogValueAxis>
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#include <QtCore/QtMath>
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#include <QtCore/QDebug>
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#include <cmath>
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QT_CHARTS_BEGIN_NAMESPACE
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PolarChartLogValueAxisAngular::PolarChartLogValueAxisAngular(QLogValueAxis *axis, QGraphicsItem *item)
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: PolarChartAxisAngular(axis, item)
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{
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QObject::connect(axis, SIGNAL(baseChanged(qreal)), this, SLOT(handleBaseChanged(qreal)));
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QObject::connect(axis, SIGNAL(labelFormatChanged(QString)), this, SLOT(handleLabelFormatChanged(QString)));
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}
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PolarChartLogValueAxisAngular::~PolarChartLogValueAxisAngular()
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{
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}
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QVector<qreal> PolarChartLogValueAxisAngular::calculateLayout() const
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{
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QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
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const qreal logMax = std::log10(logValueAxis->max()) / std::log10(logValueAxis->base());
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const qreal logMin = std::log10(logValueAxis->min()) / std::log10(logValueAxis->base());
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const qreal startEdge = logMin < logMax ? logMin : logMax;
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const qreal delta = 360.0 / qAbs(logMax - logMin);
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const qreal initialSpan = (qCeil(startEdge) - startEdge) * delta;
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int tickCount = qAbs(qCeil(logMax) - qCeil(logMin));
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QVector<qreal> points;
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points.resize(tickCount);
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for (int i = 0; i < tickCount; ++i) {
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qreal angularCoordinate = initialSpan + (delta * qreal(i));
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points[i] = angularCoordinate;
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}
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return points;
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}
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void PolarChartLogValueAxisAngular::createAxisLabels(const QVector<qreal> &layout)
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{
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QLogValueAxis *logValueAxis = static_cast<QLogValueAxis *>(axis());
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setLabels(createLogValueLabels(logValueAxis->min(),
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logValueAxis->max(),
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logValueAxis->base(),
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layout.size(),
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logValueAxis->labelFormat()));
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}
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void PolarChartLogValueAxisAngular::handleBaseChanged(qreal base)
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{
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Q_UNUSED(base);
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QGraphicsLayoutItem::updateGeometry();
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if (presenter())
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presenter()->layout()->invalidate();
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}
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void PolarChartLogValueAxisAngular::handleLabelFormatChanged(const QString &format)
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{
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Q_UNUSED(format);
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QGraphicsLayoutItem::updateGeometry();
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if (presenter())
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presenter()->layout()->invalidate();
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}
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#include "moc_polarchartlogvalueaxisangular_p.cpp"
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QT_CHARTS_END_NAMESPACE
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