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#include "qclearbuffers.h"
#include "qclearbuffers_p.h"
#include <Qt3DCore/qpropertyupdatedchange.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {
/*!
  \class Qt3DRender::QClearBuffers
  \inmodule Qt3DRender
  \since 5.7
  \ingroup framegraph

  \brief Class to clear buffers
 */

/*!
    \qmltype ClearBuffers
    \inqmlmodule Qt3D.Render
    \instantiates Qt3DRender::QClearBuffers
    \inherits FrameGraphNode
    \since 5.7
    \qmlabstract
*/

/*!
    \enum QClearBuffers::BufferType

    This enum type describes types of buffer to be cleared.
    \value None
    \value ColorBuffer
    \value DepthBuffer
    \value StencilBuffer
    \value DepthStencilBuffer
    \value ColorDepthBuffer
    \value ColorDepthStencilBuffer
    \value AllBuffers
*/

QClearBuffersPrivate::QClearBuffersPrivate()
    : QFrameGraphNodePrivate()
    , m_buffersType(QClearBuffers::None)
    , m_clearDepthValue(1.f)
    , m_clearStencilValue(0)
    , m_buffer(Q_NULLPTR)
{
}

/*!
  The constructor creates an instance with the specified \a parent.
 */
QClearBuffers::QClearBuffers(QNode *parent)
    : QFrameGraphNode(*new QClearBuffersPrivate, parent)
{
}

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

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


QClearBuffers::BufferType QClearBuffers::buffers() const
{
    Q_D(const QClearBuffers);
    return d->m_buffersType;
}

QColor QClearBuffers::clearColor() const
{
    Q_D(const QClearBuffers);
    return d->m_clearColor;
}

float QClearBuffers::clearDepthValue() const
{
    Q_D(const QClearBuffers);
    return d->m_clearDepthValue;
}

int QClearBuffers::clearStencilValue() const
{
    Q_D(const QClearBuffers);
    return d->m_clearStencilValue;
}

QRenderTargetOutput *QClearBuffers::colorBuffer() const
{
    Q_D(const QClearBuffers);
    return d->m_buffer;
}

/*!
    \property Qt3DRender::QClearBuffers::buffers
    Specifies the buffer type to be used.
 */

/*!
  \qmlproperty BufferType Qt3D.Render::ClearBuffers::buffers

*/
void QClearBuffers::setBuffers(QClearBuffers::BufferType buffers)
{
    Q_D(QClearBuffers);
    if (d->m_buffersType != buffers) {
        d->m_buffersType = buffers;
        emit buffersChanged(buffers);
    }
}

/*!
    \property Qt3DRender::QClearBuffers::clearColor
    Specifies the clear color to be used.
 */
/*!
  \qmlproperty Color Qt3D.Render::ClearBuffers::color

*/
void QClearBuffers::setClearColor(const QColor &color)
{
    Q_D(QClearBuffers);
    if (d->m_clearColor != color) {
        d->m_clearColor = color;
        emit clearColorChanged(color);
    }
}


/*!
    \property Qt3DRender::QClearBuffers::clearDepthValue
    Specifies the clear depth value to be used.
 */
/*!
  \qmlproperty float Qt3D.Render::ClearBuffers::clearDepthValue

*/
void QClearBuffers::setClearDepthValue(float clearDepthValue)
{
    Q_D(QClearBuffers);
    if (d->m_clearDepthValue != clearDepthValue) {
        if (clearDepthValue >= 0.f && clearDepthValue <= 1.f) {
            d->m_clearDepthValue = clearDepthValue;
            emit clearDepthValueChanged(clearDepthValue);
        } else qWarning() << "Invalid clear depth value";
    }
}


/*!
    \property Qt3DRender::QClearBuffers::clearStencilValue
    Specifies the stencil value to be used.
 */
/*!
  \qmlproperty int Qt3D.Render::ClearBuffers::clearStencilValue

*/
void QClearBuffers::setClearStencilValue(int clearStencilValue)
{
    Q_D(QClearBuffers);
    if (d->m_clearStencilValue != clearStencilValue) {
        d->m_clearStencilValue = clearStencilValue;
        emit clearStencilValueChanged(clearStencilValue);
    }
}

/*!
    \property Qt3DRender::QClearBuffers::colorBuffer
    Specifies a specific color buffer to clear. If set to NULL (default), and
    ColorBuffer flag is set, all color buffers will be cleared.
 */
/*!
  \qmlproperty Qt3D.Render::RenderTargetOutput Qt3D.Render::ClearBuffers::colorbuffer

*/
void QClearBuffers::setColorBuffer(QRenderTargetOutput *buffer)
{
    Q_D(QClearBuffers);
    if (d->m_buffer != buffer) {
        d->m_buffer = buffer;
        emit colorBufferChanged(buffer);
    }
}

Qt3DCore::QNodeCreatedChangeBasePtr QClearBuffers::createNodeCreationChange() const
{
    auto creationChange = Qt3DCore::QNodeCreatedChangePtr<QClearBuffersData>::create(this);
    auto &data = creationChange->data;
    Q_D(const QClearBuffers);
    data.buffersType = d->m_buffersType;
    data.clearColor = d->m_clearColor;
    data.clearDepthValue = d->m_clearDepthValue;
    data.clearStencilValue = d->m_clearStencilValue;
    data.bufferId = Qt3DCore::qIdForNode(d->m_buffer);
    return creationChange;
}

} // namespace Qt3DRender

QT_END_NAMESPACE