/****************************************************************************
**
** Copyright (C) 2012 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
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef CHARTLAYOUT_H
#define CHARTLAYOUT_H
#include <QGraphicsLayout>
#include <QMargins>
#include "qchartglobal.h"

QTCOMMERCIALCHART_BEGIN_NAMESPACE

class ChartPresenter;
class ChartTitle;
class QLegend;
class ChartAxis;
class ChartBackground;
class ChartElement;

class ChartLayout : public QGraphicsLayout
{
public:

    ChartLayout(ChartPresenter *presenter);
    virtual ~ChartLayout();

    void setMargins(const QMargins &margins);
    QMargins margins() const;

    void setGeometry(const QRectF &rect);
    QRectF chartsGeometry() const { return m_chartsRect;}

protected:
    QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
    int count() const { return 0; }
    QGraphicsLayoutItem *itemAt(int) const { return 0; };
    void removeAt(int) {};

private:
    QRectF calculateBackgroundGeometry(const QRectF &geometry, ChartBackground *background) const;
    QRectF calculateContentGeometry(const QRectF &geometry) const;
    QRectF calculateTitleGeometry(const QRectF &geometry, ChartTitle *title) const;
    QRectF calculateChartGeometry(const QRectF &geometry, const QList<ChartAxis *>& axes) const;
    QRectF calculateLegendGeometry(const QRectF &geometry, QLegend *legend) const;
    QRectF calculateAxisGeometry(const QRectF &geometry, const QList<ChartAxis *>& axes) const;
    QRectF calculateChartsGeometry(const QRectF &geometry, const QList<ChartElement *>& charts) const;
    QRectF calculateBackgroundMinimum(const QRectF &minimum) const;
    QRectF calculateContentMinimum(const QRectF &minimum) const;
    QRectF calculateTitleMinimum(const QRectF &minimum, ChartTitle *title) const;
    QRectF calculateAxisMinimum(const QRectF &minimum, const QList<ChartAxis *>& axes) const;
    QRectF calculateLegendMinimum(const QRectF &minimum, QLegend *legend) const;

private:
    ChartPresenter *m_presenter;
    QMargins m_margins;
    QRectF m_minChartRect;
    QRectF m_minAxisRect;
    QRectF m_chartsRect;
};

QTCOMMERCIALCHART_END_NAMESPACE

#endif