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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 QSGAREAALLOCATOR_P_H
#define QSGAREAALLOCATOR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qtquickglobal_p.h>
#include <QtCore/qsize.h>
QT_BEGIN_NAMESPACE
class QRect;
class QPoint;
struct QSGAreaAllocatorNode;
class Q_QUICK_EXPORT QSGAreaAllocator
{
public:
QSGAreaAllocator(const QSize &size);
~QSGAreaAllocator();
QRect allocate(const QSize &size);
bool deallocate(const QRect &rect);
bool isEmpty() const { return m_root == nullptr; }
QSize size() const { return m_size; }
QByteArray serialize();
const char *deserialize(const char *data, int size);
private:
bool allocateInNode(const QSize &size, QPoint &result, const QRect ¤tRect, QSGAreaAllocatorNode *node);
bool deallocateInNode(const QPoint &pos, QSGAreaAllocatorNode *node);
void mergeNodeWithNeighbors(QSGAreaAllocatorNode *node);
QSGAreaAllocatorNode *m_root;
QSize m_size;
};
QT_END_NAMESPACE
#endif
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