| 1 | // Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H |
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| 5 | #define QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists for the convenience |
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| 12 | // of other Qt classes. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <private/qt3drender_global_p.h> |
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| 19 | |
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| 20 | #include <QtCore/qmutex.h> |
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| 21 | #include <QtCore/qobject.h> |
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| 22 | #include <QtCore/qpointer.h> |
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| 23 | #include <QtGui/qsurface.h> |
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| 24 | |
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| 25 | QT_BEGIN_NAMESPACE |
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| 26 | |
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| 27 | class QOffscreenSurface; |
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| 28 | class QWindow; |
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| 29 | |
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| 30 | namespace Qt3DRender { |
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| 31 | namespace Render { |
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| 32 | |
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| 33 | class AbstractRenderer; |
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| 34 | |
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| 35 | class Q_3DRENDERSHARED_PRIVATE_EXPORT PlatformSurfaceFilter : public QObject |
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| 36 | { |
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| 37 | Q_OBJECT |
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| 38 | |
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| 39 | public: |
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| 40 | explicit PlatformSurfaceFilter(QObject *parent = 0); |
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| 41 | ~PlatformSurfaceFilter(); |
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| 42 | |
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| 43 | bool eventFilter(QObject *obj, QEvent *e) override; |
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| 44 | |
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| 45 | static void lockSurface(); |
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| 46 | static void releaseSurface(); |
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| 47 | static bool isSurfaceValid(QSurface *surface); |
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| 48 | |
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| 49 | template<class T> |
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| 50 | void setSurface(T *surface) |
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| 51 | { |
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| 52 | if (m_obj == surface) |
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| 53 | return; |
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| 54 | |
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| 55 | if (m_obj) |
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| 56 | m_obj->removeEventFilter(obj: this); |
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| 57 | |
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| 58 | // Surface is offset from QWindow/QOffscreenSurface due to multiple inheritance |
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| 59 | m_surface = static_cast<QSurface *>(surface); |
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| 60 | m_obj = surface; |
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| 61 | |
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| 62 | if (m_obj) { |
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| 63 | m_obj->installEventFilter(filterObj: this); |
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| 64 | markSurfaceAsValid(); |
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| 65 | } |
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| 66 | } |
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| 67 | private: |
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| 68 | QPointer<QObject> m_obj; |
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| 69 | QSurface *m_surface; |
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| 70 | |
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| 71 | static QBasicMutex m_surfacesMutex; |
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| 72 | static QHash<QSurface *, bool> m_surfacesValidity; |
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| 73 | void markSurfaceAsValid(); |
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| 74 | }; |
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| 75 | |
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| 76 | class Q_3DRENDERSHARED_PRIVATE_EXPORT SurfaceLocker |
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| 77 | { |
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| 78 | public: |
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| 79 | explicit SurfaceLocker(QSurface *surface); |
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| 80 | ~SurfaceLocker(); |
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| 81 | bool isSurfaceValid() const; |
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| 82 | |
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| 83 | private: |
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| 84 | QSurface *m_surface; |
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| 85 | }; |
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| 86 | |
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| 87 | } // namespace Render |
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| 88 | } // namespace Qt3DRender |
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| 89 | |
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| 90 | QT_END_NAMESPACE |
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| 91 | |
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| 92 | #endif // QT3DRENDER_RENDER_PLATFORMSURFACEFILTER_H |
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| 93 | |
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