| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QPLATFORMGRAPHICSBUFFER_H |
| 5 | #define QPLATFORMGRAPHICSBUFFER_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is part of the QPA API and is not meant to be used |
| 12 | // in applications. Usage of this API may make your code |
| 13 | // source and binary incompatible with future versions of Qt. |
| 14 | // |
| 15 | |
| 16 | |
| 17 | #include <QtGui/qtguiglobal.h> |
| 18 | #include <QtCore/QSize> |
| 19 | #include <QtCore/QRect> |
| 20 | #include <QtGui/QPixelFormat> |
| 21 | #include <QtCore/qflags.h> |
| 22 | #include <QtCore/QObject> |
| 23 | |
| 24 | QT_BEGIN_NAMESPACE |
| 25 | |
| 26 | class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject |
| 27 | { |
| 28 | Q_OBJECT |
| 29 | public: |
| 30 | enum AccessType |
| 31 | { |
| 32 | None = 0x00, |
| 33 | SWReadAccess = 0x01, |
| 34 | SWWriteAccess = 0x02, |
| 35 | TextureAccess = 0x04, |
| 36 | HWCompositor = 0x08 |
| 37 | }; |
| 38 | Q_ENUM(AccessType); |
| 39 | Q_DECLARE_FLAGS(AccessTypes, AccessType); |
| 40 | |
| 41 | enum Origin { |
| 42 | OriginBottomLeft, |
| 43 | OriginTopLeft |
| 44 | }; |
| 45 | Q_ENUM(Origin); |
| 46 | |
| 47 | ~QPlatformGraphicsBuffer(); |
| 48 | |
| 49 | AccessTypes isLocked() const { return m_lock_access; } |
| 50 | bool lock(AccessTypes access, const QRect &rect = QRect()); |
| 51 | void unlock(); |
| 52 | |
| 53 | virtual bool bindToTexture(const QRect &rect = QRect()) const; |
| 54 | |
| 55 | virtual const uchar *data() const; |
| 56 | virtual uchar *data(); |
| 57 | virtual int bytesPerLine() const; |
| 58 | int byteCount() const; |
| 59 | |
| 60 | virtual Origin origin() const; |
| 61 | |
| 62 | QSize size() const { return m_size; } |
| 63 | QPixelFormat format() const { return m_format; } |
| 64 | |
| 65 | Q_SIGNALS: |
| 66 | void unlocked(AccessTypes previousAccessTypes); |
| 67 | |
| 68 | protected: |
| 69 | QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format); |
| 70 | |
| 71 | virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0; |
| 72 | virtual void doUnlock() = 0; |
| 73 | |
| 74 | private: |
| 75 | QSize m_size; |
| 76 | QPixelFormat m_format; |
| 77 | AccessTypes m_lock_access; |
| 78 | }; |
| 79 | |
| 80 | QT_END_NAMESPACE |
| 81 | |
| 82 | #endif //QPLATFORMGRAPHICSBUFFER_H |
| 83 |