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// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H
#define QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qt3drender_global_p.h>
#include <QtCore/qobject.h>
#include <QtGui/qsurface.h>
#include <QSemaphore>
QT_BEGIN_NAMESPACE
class QOffscreenSurface;
class QWindow;
namespace Qt3DRender {
namespace Render {
class AbstractRenderer;
class Q_3DRENDERSHARED_PRIVATE_EXPORT PlatformSurfaceFilter : public QObject
{
Q_OBJECT
public:
explicit PlatformSurfaceFilter(QObject *parent = 0);
~PlatformSurfaceFilter();
bool eventFilter(QObject *obj, QEvent *e) override;
static void lockSurface();
static void releaseSurface();
static bool isSurfaceValid(QSurface *surface);
template<class T>
void setSurface(T *surface)
{
if (m_obj == surface)
return;
if (m_obj)
m_obj->removeEventFilter(this);
// Surface is offset from QWindow/QOffscreenSurface due to multiple inheritance
m_surface = static_cast<QSurface *>(surface);
m_obj = surface;
if (m_obj) {
m_obj->installEventFilter(this);
markSurfaceAsValid();
}
}
private:
QObject *m_obj;
QSurface *m_surface;
static QSemaphore m_surfacesSemaphore;
static QHash<QSurface *, bool> m_surfacesValidity;
void markSurfaceAsValid();
};
class Q_3DRENDERSHARED_PRIVATE_EXPORT SurfaceLocker
{
public:
explicit SurfaceLocker(QSurface *surface);
~SurfaceLocker();
bool isSurfaceValid() const;
private:
QSurface *m_surface;
};
} // namespace Render
} // namespace Qt3DRender
QT_END_NAMESPACE
#endif // QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H
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