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#include "qviewport.h"
#include "qviewport_p.h"

#include <Qt3DCore/qpropertyupdatedchange.h>
#include <Qt3DRender/qframegraphnodecreatedchange.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {

QViewportPrivate::QViewportPrivate()
    : QFrameGraphNodePrivate()
    , m_normalizedRect(QRectF(0.0f, 0.0f, 1.0f, 1.0f))
{
}

/*!
    \class Qt3DRender::QViewport
    \inmodule Qt3DRender
    \brief A viewport on the Qt3D Scene
    \since 5.7

    \inherits Qt3DRender::QFrameGraphNode

    Qt3DRender::QViewport of the scene specifies at which portion of the render surface Qt3D
    is rendering to. Area outside the viewport is left untouched.
 */

/*!
    \qmltype Viewport
    \inqmlmodule Qt3D.Render
    \since 5.7
    \inherits FrameGraphNode
    \instantiates Qt3DRender::QViewport
    \brief A viewport on the Qt3D Scene

    Viewport of the scene specifies at which portion of the render surface Qt3D is
    rendering to. Area outside the viewport is left untouched.
 */

/*!
    \qmlproperty rect Viewport::normalizedRect

    Specifies the normalised rectangle for the viewport, i.e. the viewport rectangle
    is specified relative to the render surface size. Whole surface sized viewport
    is specified as [0.0, 0.0, 1.0, 1.0], which is the default.
 */

/*!
    Constructs QViewport with given \a parent.
 */
QViewport::QViewport(QNode *parent)
    : QFrameGraphNode(*new QViewportPrivate, parent)
{
}

/*! \internal */
QViewport::~QViewport()
{
}

/*! \internal */
QViewport::QViewport(QViewportPrivate &dd, QNode *parent)
    : QFrameGraphNode(dd, parent)
{
}


QRectF QViewport::normalizedRect() const
{
    Q_D(const QViewport);
    return d->m_normalizedRect;
}

/*!
    \property QViewport::normalizedRect

    Specifies the normalised rectangle for the viewport, i.e. the viewport rectangle
    is specified relative to the render surface size. Whole surface sized viewport
    is specified as [0.0, 0.0, 1.0, 1.0], which is the default.
 */
void QViewport::setNormalizedRect(const QRectF &normalizedRect)
{
    Q_D(QViewport);
    if (normalizedRect != d->m_normalizedRect) {
        d->m_normalizedRect = normalizedRect;
        emit normalizedRectChanged(normalizedRect);
    }
}

Qt3DCore::QNodeCreatedChangeBasePtr QViewport::createNodeCreationChange() const
{
    auto creationChange = QFrameGraphNodeCreatedChangePtr<QViewportData>::create(this);
    auto &data = creationChange->data;
    Q_D(const QViewport);
    data.normalizedRect = d->m_normalizedRect;
    return creationChange;
}

} // namespace Qt3DRender

QT_END_NAMESPACE