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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 QPLATFORMSHAREDGRAPHICSCACHE_H
#define QPLATFORMSHAREDGRAPHICSCACHE_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/qobject.h>
#include <QtGui/qimage.h>
QT_BEGIN_NAMESPACE
class Q_GUI_EXPORT QPlatformSharedGraphicsCache: public QObject
{
Q_OBJECT
public:
enum PixelFormat
{
Alpha8
};
enum BufferType
{
OpenGLTexture
};
explicit QPlatformSharedGraphicsCache(QObject *parent = nullptr) : QObject(parent) {}
virtual void beginRequestBatch() = 0;
virtual void ensureCacheInitialized(const QByteArray &cacheId, BufferType bufferType,
PixelFormat pixelFormat) = 0;
virtual void requestItems(const QByteArray &cacheId, const QList<quint32> &itemIds) = 0;
virtual void insertItems(const QByteArray &cacheId, const QList<quint32> &itemIds,
const QList<QImage> &items) = 0;
virtual void releaseItems(const QByteArray &cacheId, const QList<quint32> &itemIds) = 0;
virtual void endRequestBatch() = 0;
virtual bool requestBatchStarted() const = 0;
virtual uint textureIdForBuffer(void *bufferId) = 0;
virtual void referenceBuffer(void *bufferId) = 0;
virtual bool dereferenceBuffer(void *bufferId) = 0;
virtual QSize sizeOfBuffer(void *bufferId) = 0;
virtual void *eglImageForBuffer(void *bufferId) = 0;
Q_SIGNALS:
void itemsMissing(const QByteArray &cacheId, const QList<quint32> &itemIds);
void itemsAvailable(const QByteArray &cacheId, void *bufferId, const QList<quint32> &itemIds,
const QList<QPoint> &positionsInBuffer);
void itemsInvalidated(const QByteArray &cacheId, const QList<quint32> &itemIds);
void itemsUpdated(const QByteArray &cacheId, void *bufferId, const QList<quint32> &itemIds,
const QList<QPoint> &positionsInBuffer);
};
QT_END_NAMESPACE
#endif // QPLATFORMSHAREDGRAPHICSCACHE_H
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