KisRectsGrid.h

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/*
 *  SPDX-FileCopyrightText: 2021 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef KISRECTSGRID_H
#define KISRECTSGRID_H
 
#include <QRect>
#include <QVector>
#include "kritaglobal_export.h"
 
 
class KRITAGLOBAL_EXPORT KisRectsGrid
{
public:
    KisRectsGrid(int gridSize = 64);
 
 
    QRect alignRect(const QRect &rc) const;
 
    QVector<QRect> addRect(const QRect &rc);
 
    QVector<QRect> removeRect(const QRect &rc);
 
    QVector<QRect> addAlignedRect(const QRect &rc);
 
    QVector<QRect> removeAlignedRect(const QRect &rc);
 
    bool contains(const QRect &rc) const;
 
    QRect boundingRect() const;
 
private:
    void resize(const QRect &newMappedAreaSize);
    static QRect shrinkRectToAlignedGrid(const QRect &srcRect, int lod);
 
private:
    int m_gridSize;
    int m_logGridSize;
    QVector<quint8> m_mapping;
    QRect m_mappedAreaSize; // measured in col/row
 
};
 
#endif // KISRECTSGRID_H