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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QPLATFORMGRAPHICSBUFFER_H
#define QPLATFORMGRAPHICSBUFFER_H
//
// W A R N I N G
// -------------
//
// This file is part of the QPA API and is not meant to be used
// in applications. Usage of this API may make your code
// source and binary incompatible with future versions of Qt.
//
#include <QtGui/qtguiglobal.h>
#include <QtCore/QSize>
#include <QtCore/QRect>
#include <QtGui/QPixelFormat>
#include <QtCore/qflags.h>
#include <QtCore/QObject>
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QPlatformGraphicsBuffer : public QObject
{
Q_OBJECT
public:
enum AccessType
{
None = 0x00,
SWReadAccess = 0x01,
SWWriteAccess = 0x02,
TextureAccess = 0x04,
HWCompositor = 0x08
};
Q_ENUM(AccessType)
Q_DECLARE_FLAGS(AccessTypes, AccessType)
enum Origin {
OriginBottomLeft,
OriginTopLeft
};
Q_ENUM(Origin)
~QPlatformGraphicsBuffer();
AccessTypes isLocked() const { return m_lock_access; }
bool lock(AccessTypes access, const QRect &rect = QRect());
void unlock();
virtual bool bindToTexture(const QRect &rect = QRect()) const;
virtual const uchar *data() const;
virtual uchar *data();
virtual int bytesPerLine() const;
int byteCount() const;
virtual Origin origin() const;
QSize size() const { return m_size; }
QPixelFormat format() const { return m_format; }
Q_SIGNALS:
void unlocked(AccessTypes previousAccessTypes);
protected:
QPlatformGraphicsBuffer(const QSize &size, const QPixelFormat &format);
virtual bool doLock(AccessTypes access, const QRect &rect = QRect()) = 0;
virtual void doUnlock() = 0;
private:
QSize m_size;
QPixelFormat m_format;
AccessTypes m_lock_access;
};
QT_END_NAMESPACE
#endif //QPLATFORMGRAPHICSBUFFER_H
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