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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
**
**
****************************************************************************/
#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_PRIVATE_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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