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**
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#include <QSGTexture>
#include <QOpenGLTexture>
#include <QQuickWindow>
#include <QDebug>
#include <QQmlPropertyMap>

#include "qwaylandquicksurface.h"
#include "qwaylandquickcompositor.h"
#include "qwaylandsurfaceitem.h"
#include "qwaylandoutput.h"
#include <QtCompositor/private/qwaylandsurface_p.h>
#include <QtCompositor/private/qwaylandtexturebufferattacher_p.h>

QT_BEGIN_NAMESPACE

class QWaylandQuickSurfacePrivate : public QWaylandSurfacePrivate
{
public:
    QWaylandQuickSurfacePrivate(wl_client *client, quint32 id, int version, QWaylandQuickCompositor *c, QWaylandQuickSurface *surf)
        : QWaylandSurfacePrivate(client, id, version, c, surf)
        , compositor(c)
        , useTextureAlpha(true)
        , windowPropertyMap(new QQmlPropertyMap)
        , clientRenderingEnabled(true)
    {

    }

    ~QWaylandQuickSurfacePrivate()
    {
        windowPropertyMap->deleteLater();
        // buffer is deleted automatically by ~Surface(), since it is the assigned attacher
    }

    void surface_commit(Resource *resource) Q_DECL_OVERRIDE
    {
        QWaylandSurfacePrivate::surface_commit(resource);

        Q_FOREACH (QtWayland::Output *output, outputs())
            output->waylandOutput()->update();
    }

    QWaylandQuickCompositor *compositor;
    bool useTextureAlpha;
    QQmlPropertyMap *windowPropertyMap;
    bool clientRenderingEnabled;
};

QWaylandQuickSurface::QWaylandQuickSurface(wl_client *client, quint32 id, int version, QWaylandQuickCompositor *compositor)
                    : QWaylandSurface(new QWaylandQuickSurfacePrivate(client, id, version, compositor, this))
{
    Q_D(QWaylandQuickSurface);
    QWaylandSurface::setBufferAttacher(new QWaylandTextureBufferAttacher(this));

    connect(this, &QWaylandSurface::windowPropertyChanged, d->windowPropertyMap, &QQmlPropertyMap::insert);
    connect(d->windowPropertyMap, &QQmlPropertyMap::valueChanged, this, &QWaylandSurface::setWindowProperty);
}

QWaylandQuickSurface::~QWaylandQuickSurface()
{

}

QWaylandTextureBufferAttacher *QWaylandQuickSurface::textureBufferAttacher() const
{
    return static_cast<QWaylandTextureBufferAttacher*>(bufferAttacher());
}

QSGTexture *QWaylandQuickSurface::texture() const
{
    return textureBufferAttacher()->texture();
}

bool QWaylandQuickSurface::useTextureAlpha() const
{
    Q_D(const QWaylandQuickSurface);
    return d->useTextureAlpha;
}

void QWaylandQuickSurface::setUseTextureAlpha(bool useTextureAlpha)
{
    Q_D(QWaylandQuickSurface);
    if (d->useTextureAlpha != useTextureAlpha) {
        d->useTextureAlpha = useTextureAlpha;
        emit useTextureAlphaChanged();
        emit configure(textureBufferAttacher()->currentBuffer());
    }
}

QObject *QWaylandQuickSurface::windowPropertyMap() const
{
    Q_D(const QWaylandQuickSurface);
    return d->windowPropertyMap;
}

bool QWaylandQuickSurface::event(QEvent *e)
{
    if (e->type() == static_cast<QEvent::Type>(QWaylandSurfaceLeaveEvent::WaylandSurfaceLeave)) {
        QWaylandSurfaceLeaveEvent *event = static_cast<QWaylandSurfaceLeaveEvent *>(e);

        if (event->output()) {
            QQuickWindow *oldWindow = static_cast<QQuickWindow *>(event->output()->window());
            disconnect(oldWindow, &QQuickWindow::beforeSynchronizing,
                       this, &QWaylandQuickSurface::updateTexture);
            disconnect(oldWindow, &QQuickWindow::sceneGraphInvalidated,
                       this, &QWaylandQuickSurface::invalidateTexture);
        }

        return true;
    }

    if (e->type() == static_cast<QEvent::Type>(QWaylandSurfaceEnterEvent::WaylandSurfaceEnter)) {
        QWaylandSurfaceEnterEvent *event = static_cast<QWaylandSurfaceEnterEvent *>(e);

        if (event->output()) {
            QQuickWindow *window = static_cast<QQuickWindow *>(event->output()->window());
            connect(window, &QQuickWindow::beforeSynchronizing,
                    this, &QWaylandQuickSurface::updateTexture,
                    Qt::DirectConnection);
            connect(window, &QQuickWindow::sceneGraphInvalidated,
                    this, &QWaylandQuickSurface::invalidateTexture,
                    Qt::DirectConnection);
        }

        return true;
    }

    return QObject::event(e);
}

void QWaylandQuickSurface::updateTexture()
{
    QWaylandTextureBufferAttacher *attacher = textureBufferAttacher();
    const bool update = attacher->isDirty();
    if (update)
        attacher->updateTexture();
    foreach (QWaylandSurfaceView *view, views())
        static_cast<QWaylandSurfaceItem *>(view)->updateTexture(update);
}

void QWaylandQuickSurface::invalidateTexture()
{
    textureBufferAttacher()->invalidateTexture();
    foreach (QWaylandSurfaceView *view, views())
        static_cast<QWaylandSurfaceItem *>(view)->updateTexture(true);
    emit redraw();
}

bool QWaylandQuickSurface::clientRenderingEnabled() const
{
    Q_D(const QWaylandQuickSurface);
    return d->clientRenderingEnabled;
}

void QWaylandQuickSurface::setClientRenderingEnabled(bool enabled)
{
    Q_D(QWaylandQuickSurface);
    if (d->clientRenderingEnabled != enabled) {
        d->clientRenderingEnabled = enabled;

        sendOnScreenVisibilityChange(enabled);

        emit clientRenderingEnabledChanged();
    }
}

QT_END_NAMESPACE