/****************************************************************************
**
** 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
** $QT_END_LICENSE$
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****************************************************************************/

#include "qdatetimeaxis.h"
#include "qdatetimeaxis_p.h"
#include "chartdatetimeaxisx_p.h"
#include "chartdatetimeaxisy_p.h"
#include "domain_p.h"
#include <cmath>
#include <QDebug>

QTCOMMERCIALCHART_BEGIN_NAMESPACE
/*!
    \class QDateTimeAxis
    \brief The QDateTimeAxis class is used for manipulating chart's axis.
    \mainclass

    ValuesAxis can be setup to show axis line with tick marks, grid lines and shades.
    Values of axis are drawn to position of ticks
*/

/*!
    \qmlclass ValuesAxis QDateTimeAxis
    \brief The ValuesAxis element is used for manipulating chart's axes

    ValueAxis can be setup to show axis line with tick marks, grid lines and shades.
    Values of axis are drawn to position of ticks

    To access Axes you can use ChartView API. For example:
    \code
        ChartView {
            ValuesAxis {
                id: xAxis
                min: 0
                max: 10
            }
        // Add a few series...
        }
    \endcode
*/

/*!
  \property QDateTimeAxis::min
  Defines the minimum value on the axis.
*/
/*!
  \qmlproperty real ValuesAxis::min
  Defines the minimum value on the axis.
*/

/*!
  \property QDateTimeAxis::max
  Defines the maximum value on the axis.
*/
/*!
  \qmlproperty real ValuesAxis::max
  Defines the maximum value on the axis.
*/

/*!
  \fn void QDateTimeAxis::minChanged(qreal min)
  Axis emits signal when \a min of axis has changed.
*/
/*!
  \qmlsignal ValuesAxis::onMinChanged(real min)
  Axis emits signal when \a min of axis has changed.
*/

/*!
  \fn void QDateTimeAxis::maxChanged(qreal max)
  Axis emits signal when \a max of axis has changed.
*/
/*!
  \qmlsignal ValuesAxis::onMaxChanged(real max)
  Axis emits signal when \a max of axis has changed.
*/

/*!
  \fn void QDateTimeAxis::rangeChanged(qreal min, qreal max)
  Axis emits signal when \a min or \a max of axis has changed.
*/

/*!
  \property QDateTimeAxis::ticksCount
  The number of tick marks for the axis.
*/

/*!
  \qmlproperty int ValuesAxis::ticksCount
  The number of tick marks for the axis.
*/

/*!
  \property QDateTimeAxis::niceNumbersEnabled
  Whether the nice numbers algorithm is enabled or not for the axis.
*/

/*!
  \qmlproperty bool ValuesAxis::niceNumbersEnabled
  Whether the nice numbers algorithm is enabled or not for the axis.
*/

/*!
    Constructs an axis object which is a child of \a parent.
*/
QDateTimeAxis::QDateTimeAxis(QObject *parent) :
    QAbstractAxis(*new QDateTimeAxisPrivate(this),parent)
{

}

/*!
    \internal
*/
QDateTimeAxis::QDateTimeAxis(QDateTimeAxisPrivate &d,QObject *parent) : QAbstractAxis(d,parent)
{

}

/*!
    Destroys the object
*/
QDateTimeAxis::~QDateTimeAxis()
{

}

void QDateTimeAxis::setMin(QDateTime min)
{
    Q_D(QDateTimeAxis);
    if (min.isValid())
        setRange(min, qMax(d->m_max, min));
}

QDateTime QDateTimeAxis::min() const
{
    Q_D(const QDateTimeAxis);
    return d->m_min;
}

void QDateTimeAxis::setMax(QDateTime max)
{
    Q_D(QDateTimeAxis);
    if (max.isValid())
        setRange(qMin(d->m_min, max), max);
}

QDateTime QDateTimeAxis::max() const
{
    Q_D(const QDateTimeAxis);
    return d->m_max;
}

/*!
  Sets range from \a min to \a max on the axis.
*/
void QDateTimeAxis::setRange(QDateTime min, QDateTime max)
{
    Q_D(QDateTimeAxis);
    if (!min.isValid() || !max.isValid() || min > max)
        return;

    bool changed = false;
    if (d->m_min != min) {
        d->m_min = min;
        changed = true;
        emit minChanged(min);
    }

    if (d->m_max != max) {
        d->m_max = max;
        changed = true;
        emit maxChanged(max);
    }

    //        if(d->m_niceNumbers) d->looseNiceNumbers(d->m_min, d->m_max, d->m_tickCount);

    if (changed) {
        emit rangeChanged(d->m_min,d->m_max);
        d->emitUpdated();
    }
}

void QDateTimeAxis::setFormatString(QString format)
{
    Q_D(QDateTimeAxis);
    d->m_format = format;
}

QString QDateTimeAxis::formatString() const
{
    Q_D(const QDateTimeAxis);
    return d->m_format;
}

/*!
  Sets \a count for ticks on the axis.
*/
void QDateTimeAxis::setTicksCount(int count)
{    
    Q_D(QDateTimeAxis);
    if (d->m_tickCount != count && count >=2) {
        d->m_tickCount = count;
        d->emitUpdated();
    }
}

/*!
  \fn int QDateTimeAxis::ticksCount() const
  Return number of ticks on the axis
*/
int QDateTimeAxis::ticksCount() const
{
    Q_D(const QDateTimeAxis);
    return d->m_tickCount;
}

/*!
  Returns the type of the axis
*/
QAbstractAxis::AxisType QDateTimeAxis::type() const
{
    return AxisTypeDateTime;
}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

QDateTimeAxisPrivate::QDateTimeAxisPrivate(QDateTimeAxis* q):
    QAbstractAxisPrivate(q),
    m_tickCount(5)
{
    m_min = QDateTime::fromMSecsSinceEpoch(0);
    m_max = QDateTime::fromMSecsSinceEpoch(0);
    m_format = "hh:mm:ss\ndd-mm-yyyy";
}

QDateTimeAxisPrivate::~QDateTimeAxisPrivate()
{

}

void QDateTimeAxisPrivate::handleDomainUpdated()
{
    Q_Q(QDateTimeAxis);
    Domain* domain = qobject_cast<Domain*>(sender());
    Q_ASSERT(domain);

    if(orientation()==Qt::Horizontal){
        q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minX()), QDateTime::fromMSecsSinceEpoch(domain->maxX()));
    }else if(orientation()==Qt::Vertical){
        q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minY()), QDateTime::fromMSecsSinceEpoch(domain->maxY()));
    }
}


void QDateTimeAxisPrivate::setMin(const QVariant &min)
{
    Q_Q(QDateTimeAxis);
    if (min.canConvert(QVariant::DateTime))
        q->setMin(min.toDateTime());
}

void QDateTimeAxisPrivate::setMax(const QVariant &max)
{

    Q_Q(QDateTimeAxis);
    if (max.canConvert(QVariant::DateTime))
        q->setMax(max.toDateTime());
}

void QDateTimeAxisPrivate::setRange(const QVariant &min, const QVariant &max)
{
    Q_Q(QDateTimeAxis);
    if (min.canConvert(QVariant::DateTime) && max.canConvert(QVariant::DateTime))
        q->setRange(min.toDateTime(), max.toDateTime());
}

ChartAxis* QDateTimeAxisPrivate::createGraphics(ChartPresenter* presenter)
{
    Q_Q(QDateTimeAxis);
    if(m_orientation == Qt::Vertical){
        return new ChartDateTimeAxisY(q,presenter);
    }else{
        return new ChartDateTimeAxisX(q,presenter);
    }

}

void QDateTimeAxisPrivate::intializeDomain(Domain* domain)
{
    Q_Q(QDateTimeAxis);
    if(m_max == m_min) {
        if(m_orientation==Qt::Vertical){
            q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minY()), QDateTime::fromMSecsSinceEpoch(domain->maxY()));
        }else{
            q->setRange(QDateTime::fromMSecsSinceEpoch(domain->minX()), QDateTime::fromMSecsSinceEpoch(domain->maxX()));
        }
    } else {
        if(m_orientation==Qt::Vertical){
            domain->setRangeY(m_min.toMSecsSinceEpoch(), m_max.toMSecsSinceEpoch());
        }else{
            domain->setRangeX(m_min.toMSecsSinceEpoch(), m_max.toMSecsSinceEpoch());
        }
    }
}

#include "moc_qdatetimeaxis.cpp"
#include "moc_qdatetimeaxis_p.cpp"

QTCOMMERCIALCHART_END_NAMESPACE