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/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt 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 Digia.
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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.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "polarchartlayout_p.h"
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#include "chartpresenter_p.h"
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#include "polarchartaxis_p.h"
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#include <QDebug>
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#include <QFontMetrics>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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static const qreal golden_ratio = 0.4;
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PolarChartLayout::PolarChartLayout(ChartPresenter *presenter)
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: AbstractChartLayout(presenter)
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{
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}
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PolarChartLayout::~PolarChartLayout()
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{
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}
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QRectF PolarChartLayout::calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxisElement *> &axes) const
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{
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// How to handle multiple angular/radial axes?
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qreal axisRadius = geometry.height() / 2.0;
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if (geometry.width() < geometry.height())
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axisRadius = geometry.width() / 2.0;
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int titleHeight = 0;
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foreach (ChartAxisElement *chartAxis, axes) {
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if (!chartAxis->isVisible())
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continue;
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PolarChartAxis *polarChartAxis = static_cast<PolarChartAxis *>(chartAxis);
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qreal radius = polarChartAxis->preferredAxisRadius(geometry.size());
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if (radius < axisRadius)
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axisRadius = radius;
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if (chartAxis->axis()->orientation() == Qt::Horizontal
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&& chartAxis->axis()->isTitleVisible()
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&& !chartAxis->axis()->titleText().isEmpty()) {
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// If axis has angular title, adjust geometry down by the space title takes
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QFontMetrics titleMetrics(chartAxis->axis()->titleFont());
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titleHeight = (titleMetrics.boundingRect(chartAxis->axis()->titleText()).height() / 2) + chartAxis->titlePadding();
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}
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}
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QRectF axisRect;
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axisRect.setSize(QSizeF(axisRadius * 2.0, axisRadius * 2.0));
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axisRect.moveCenter(geometry.center());
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axisRect.adjust(0, titleHeight, 0, titleHeight);
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foreach (ChartAxisElement *chartAxis, axes)
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chartAxis->setGeometry(axisRect, QRectF());
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return axisRect;
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}
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QRectF PolarChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *> &axes) const
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{
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Q_UNUSED(axes);
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return minimum;
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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