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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 <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 = 0) : QObject(parent) {}
virtual void beginRequestBatch() = 0;
virtual void ensureCacheInitialized(const QByteArray &cacheId, BufferType bufferType,
PixelFormat pixelFormat) = 0;
virtual void requestItems(const QByteArray &cacheId, const QVector<quint32> &itemIds) = 0;
virtual void insertItems(const QByteArray &cacheId,
const QVector<quint32> &itemIds,
const QVector<QImage> &items) = 0;
virtual void releaseItems(const QByteArray &cacheId, const QVector<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 QVector<quint32> &itemIds);
void itemsAvailable(const QByteArray &cacheId, void *bufferId,
const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
void itemsInvalidated(const QByteArray &cacheId, const QVector<quint32> &itemIds);
void itemsUpdated(const QByteArray &cacheId, void *bufferId,
const QVector<quint32> &itemIds, const QVector<QPoint> &positionsInBuffer);
};
QT_END_NAMESPACE
#endif // QPLATFORMSHAREDGRAPHICSCACHE_H
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