/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/

#include "polarchartlayout_p.h"
#include "chartpresenter_p.h"
#include "polarchartaxis_p.h"
#include <QDebug>
#include <QFontMetrics>

QTCOMMERCIALCHART_BEGIN_NAMESPACE

static const qreal golden_ratio = 0.4;

PolarChartLayout::PolarChartLayout(ChartPresenter *presenter)
    : AbstractChartLayout(presenter)
{
}

PolarChartLayout::~PolarChartLayout()
{
}

QRectF PolarChartLayout::calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxisElement *> &axes) const
{
    // How to handle multiple angular/radial axes?
    qreal axisRadius = geometry.height() / 2.0;
    if (geometry.width() < geometry.height())
        axisRadius = geometry.width() / 2.0;

    int titleHeight = 0;
    foreach (ChartAxisElement *chartAxis, axes) {
        if (!chartAxis->isVisible())
            continue;

        PolarChartAxis *polarChartAxis = static_cast<PolarChartAxis *>(chartAxis);
        qreal radius = polarChartAxis->preferredAxisRadius(geometry.size());
        if (radius < axisRadius)
            axisRadius = radius;

        if (chartAxis->axis()->orientation() == Qt::Horizontal
            && chartAxis->axis()->isTitleVisible()
            && !chartAxis->axis()->titleText().isEmpty()) {
            // If axis has angular title, adjust geometry down by the space title takes
            QFontMetrics titleMetrics(chartAxis->axis()->titleFont());
            titleHeight = (titleMetrics.boundingRect(chartAxis->axis()->titleText()).height() / 2) + chartAxis->titlePadding();
        }
    }

    QRectF axisRect;
    axisRect.setSize(QSizeF(axisRadius * 2.0, axisRadius * 2.0));
    axisRect.moveCenter(geometry.center());
    axisRect.adjust(0, titleHeight, 0, titleHeight);

    foreach (ChartAxisElement *chartAxis, axes)
        chartAxis->setGeometry(axisRect, QRectF());

    return axisRect;
}

QRectF PolarChartLayout::calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxisElement *> &axes) const
{
    Q_UNUSED(axes);
    return minimum;
}

QTCOMMERCIALCHART_END_NAMESPACE