| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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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 QPLATFORMGRAPHICSBUFFER_H |
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| 5 | #define QPLATFORMGRAPHICSBUFFER_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 part of the QPA API and is not meant to be used |
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| 12 | // in applications. Usage of this API may make your code |
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| 13 | // source and binary incompatible with future versions of Qt. |
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| 14 | // |
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| 15 | |
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| 16 | |
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| 17 | #include <QtGui/qtguiglobal.h> |
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| 18 | #include <QtCore/QSize> |
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| 19 | #include <QtCore/QRect> |
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| 20 | #include <QtGui/QPixelFormat> |
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| 21 | #include <QtCore/qflags.h> |
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| 22 | #include <QtCore/QObject> |
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| 23 | |
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| 24 | QT_BEGIN_NAMESPACE |
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| 25 | |
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| 26 | class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject |
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| 27 | { |
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| 28 | Q_OBJECT |
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| 29 | public: |
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| 30 | enum AccessType |
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| 31 | { |
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| 32 | None = 0x00, |
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| 33 | SWReadAccess = 0x01, |
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| 34 | SWWriteAccess = 0x02, |
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| 35 | TextureAccess = 0x04, |
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| 36 | HWCompositor = 0x08 |
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| 37 | }; |
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| 38 | Q_ENUM(AccessType); |
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| 39 | Q_DECLARE_FLAGS(AccessTypes, AccessType); |
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| 40 | |
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| 41 | enum Origin { |
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| 42 | OriginBottomLeft, |
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| 43 | OriginTopLeft |
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| 44 | }; |
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| 45 | Q_ENUM(Origin); |
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| 46 | |
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| 47 | ~QPlatformGraphicsBuffer(); |
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| 48 | |
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| 49 | AccessTypes isLocked() const { return m_lock_access; } |
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| 50 | bool lock(AccessTypes access, const QRect &rect = QRect()); |
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| 51 | void unlock(); |
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| 52 | |
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| 53 | virtual bool bindToTexture(const QRect &rect = QRect()) const; |
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| 54 | |
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| 55 | virtual const uchar *data() const; |
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| 56 | virtual uchar *data(); |
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| 57 | virtual int bytesPerLine() const; |
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| 58 | int byteCount() const; |
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| 59 | |
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| 60 | virtual Origin origin() const; |
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| 61 | |
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| 62 | QSize size() const { return m_size; } |
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| 63 | QPixelFormat format() const { return m_format; } |
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| 64 | |
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| 65 | Q_SIGNALS: |
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| 66 | void unlocked(AccessTypes previousAccessTypes); |
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| 67 | |
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| 68 | protected: |
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| 69 | QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format); |
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| 70 | |
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| 71 | virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0; |
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| 72 | virtual void doUnlock() = 0; |
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| 73 | |
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| 74 | private: |
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| 75 | QSize m_size; |
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| 76 | QPixelFormat m_format; |
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| 77 | AccessTypes m_lock_access; |
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| 78 | }; |
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| 79 | |
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| 80 | QT_END_NAMESPACE |
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| 81 | |
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| 82 | #endif //QPLATFORMGRAPHICSBUFFER_H |
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| 83 | |
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