path: root/src/imports/location/qdeclarativegeorectangle.cpp

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#include "qdeclarativegeorectangle.h"

#include <QtCore/qnumeric.h>
#include <QtLocation/QGeoRectangle>

#include <QtCore/QDebug>

QT_BEGIN_NAMESPACE

/*!
    \qmlbasictype georectangle
    \inqmlmodule QtLocation 5.0
    \ingroup qml-QtLocation5-positioning
    \since Qt Location 5.0

    \brief The georectangle type represents a rectangular geographic area.

    The \c georectangle type is a \l {QtLocation5::geoshape}{geoshape} that represents a
    rectangular geographic area.  It is defined by a pair of
    \l {QtLocation5::coordinate}{coordinates} which represent the top-left and bottom-right corners
    of the \c {georectangle}.  The coordinates are accessible from the \c topLeft and
    \c bottomRight attributes.

    A \c georectangle is considered invalid if the top-left or bottom-right coordinates are invalid
    or if the top-left coordinate is South of the bottom-right coordinate.

    The coordinates of the four corners of the \c georectangle can be accessed with the
    \c {topLeft}, \c {topRight}, \c {bottomLeft} and \c {bottomRight} attributes.  The \c center
    attribute can be used to get the coordinate of the center of the \c georectangle.  The \c width
    and \c height attributes can be used to get the width and height of the \c georectangle in
    degrees.  Setting one of these attributes will cause the other attributes to be adjusted
    accordingly.

    \section2 Limitations

    A \c georectangle can never cross the poles.

    If the height or center of a \c georectangle is adjusted such that it would cross one of the
    poles the height is modified such that the \c georectangle touches but does not cross the pole
    and that the center coordinate is still in the center of the \c georectangle.

    \section2 Example Usage

    Use properties of type \l variant to store a \c {georectangle}.  To create a \c georectangle
    value, use the \l {QtLocation5::QtLocation}{QtLocation.rectangle()} function:

    \qml
    import QtLocation 5.0

    Item {
        property variant region: QtLocation.rectangle(QtLocation.coordinate(-27.5, 153.1), QtLocation.coordinate(-27.6, 153.2))
    }
    \endqml

    When integrating with C++, note that any QGeoRectangle value passed into QML from C++ is
    automatically converted into a \c georectangle value, and vice-versa.
*/

GeoRectangleValueType::GeoRectangleValueType(QObject *parent)
:   GeoShapeValueType(qMetaTypeId<QGeoRectangle>(), parent)
{
}

GeoRectangleValueType::~GeoRectangleValueType()
{
}

QGeoCoordinate GeoRectangleValueType::bottomLeft()
{
    return QGeoRectangle(v).bottomLeft();
}

/*
    This property holds the bottom left coordinate of this georectangle.
*/
void GeoRectangleValueType::setBottomLeft(const QGeoCoordinate &coordinate)
{
    QGeoRectangle r = v;

    if (r.bottomLeft() == coordinate)
        return;

    r.setBottomLeft(coordinate);
    v = r;
}

QGeoCoordinate GeoRectangleValueType::bottomRight()
{
    return QGeoRectangle(v).bottomRight();
}

/*
    This property holds the bottom right coordinate of this georectangle.
*/
void GeoRectangleValueType::setBottomRight(const QGeoCoordinate &coordinate)
{
    QGeoRectangle r = v;

    if (r.bottomRight() == coordinate)
        return;

    r.setBottomRight(coordinate);
    v = r;
}

QGeoCoordinate GeoRectangleValueType::topLeft()
{
    return QGeoRectangle(v).topLeft();
}

/*
    This property holds the top left coordinate of this georectangle.
*/
void GeoRectangleValueType::setTopLeft(const QGeoCoordinate &coordinate)
{
    QGeoRectangle r = v;

    if (r.topLeft() == coordinate)
        return;

    r.setTopLeft(coordinate);
    v = r;
}

QGeoCoordinate GeoRectangleValueType::topRight()
{
    return QGeoRectangle(v).topRight();
}

/*
    This property holds the top right coordinate of this georectangle.
*/
void GeoRectangleValueType::setTopRight(QGeoCoordinate &coordinate)
{
    QGeoRectangle r = v;

    if (r.topRight() == coordinate)
        return;

    r.setTopRight(coordinate);
    v = r;
}

QGeoCoordinate GeoRectangleValueType::center()
{
    return QGeoRectangle(v).center();
}

/*
    This property holds the center coordinate of this georectangle.
*/
void GeoRectangleValueType::setCenter(const QGeoCoordinate &coordinate)
{
    QGeoRectangle r = v;

    if (r.center() == coordinate)
        return;

    r.setCenter(coordinate);
    v = r;
}

double GeoRectangleValueType::height()
{
    return QGeoRectangle(v).height();
}

/*
    This property holds the height of this georectangle (in degrees).
*/
void GeoRectangleValueType::setHeight(double height)
{
    QGeoRectangle r = v;

    if (!r.isValid())
        r.setCenter(QGeoCoordinate(0.0, 0.0));

    r.setHeight(height);
    v = r;
}

double GeoRectangleValueType::width()
{
    return QGeoRectangle(v).width();
}

/*
    This property holds the width of this georectangle (in degrees).
*/
void GeoRectangleValueType::setWidth(double width)
{
    QGeoRectangle r = v;

    if (!r.isValid())
        r.setCenter(QGeoCoordinate(0.0, 0.0));

    r.setWidth(width);
    v = r;
}

QString GeoRectangleValueType::toString() const
{
    if (v.type() != QGeoShape::RectangleType) {
        qWarning("Not a rectangle a %d\n", v.type());
        return QStringLiteral("QGeoRectangle(not a rectangle)");
    }

    QGeoRectangle r = v;
    return QStringLiteral("QGeoRectangle({%1, %2}, {%3, %4})")
        .arg(r.topLeft().latitude())
        .arg(r.topLeft().longitude())
        .arg(r.bottomRight().latitude())
        .arg(r.bottomRight().longitude());
}

void GeoRectangleValueType::setValue(const QVariant &value)
{
    if (value.userType() == qMetaTypeId<QGeoRectangle>())
        v = value.value<QGeoRectangle>();
    else if (value.userType() == qMetaTypeId<QGeoShape>())
        v = value.value<QGeoShape>();
    else
        v = QGeoRectangle();

    onLoad();
}

QVariant GeoRectangleValueType::value()
{
    return QVariant::fromValue(QGeoRectangle(v));
}

void GeoRectangleValueType::write(QObject *obj, int idx, QQmlPropertyPrivate::WriteFlags flags)
{
    QGeoRectangle r = v;
    writeProperty(obj, idx, flags, &r);
}

void GeoRectangleValueType::writeVariantValue(QObject *obj, int idx, QQmlPropertyPrivate::WriteFlags flags, QVariant *from)
{
    if (from->userType() == qMetaTypeId<QGeoRectangle>()) {
        writeProperty(obj, idx, flags, from);
    } else if (from->userType() == qMetaTypeId<QGeoShape>()) {
        QGeoRectangle r = from->value<QGeoShape>();
        QVariant v = QVariant::fromValue(r);
        writeProperty(obj, idx, flags, &v);
    } else {
        QVariant v = QVariant::fromValue(QGeoRectangle());
        writeProperty(obj, idx, flags, &v);
    }
}

#include "moc_qdeclarativegeorectangle.cpp"

QT_END_NAMESPACE