TileId.h

// SPDX-License-Identifier: LGPL-2.1-or-later
//
// SPDX-FileCopyrightText: 2008, 2010 Jens-Michael Hoffmann <jensmh@gmx.de>
// SPDX-FileCopyrightText: 2012 Bernhard Beschow <bbeschow@cs.tu-berlin.de>
//
 
#ifndef MARBLE_TILEID_H
#define MARBLE_TILEID_H
 
#include "marble_export.h"
 
#include <QHash>
 
class QString;
 
namespace Marble
{
class GeoDataCoordinates;
 
class MARBLE_EXPORT TileId
{
public:
    TileId(QString const &mapThemeId, int zoomLevel, int tileX, int tileY);
    TileId(uint mapThemeIdHash, int zoomLevel, int tileX, int tileY);
    TileId();
 
    int zoomLevel() const;
    int x() const;
    int y() const;
    uint mapThemeIdHash() const;
 
    bool operator==(TileId const &rhs) const;
    bool operator<(TileId const &rhs) const;
 
    static TileId fromCoordinates(const GeoDataCoordinates &coords, int zoomLevel);
 
private:
    uint m_mapThemeIdHash;
    int m_zoomLevel;
    int m_tileX;
    int m_tileY;
};
 
uint qHash(TileId const &);
 
// inline definitions
 
inline int TileId::zoomLevel() const
{
    return m_zoomLevel;
}
 
inline int TileId::x() const
{
    return m_tileX;
}
 
inline int TileId::y() const
{
    return m_tileY;
}
 
inline uint TileId::mapThemeIdHash() const
{
    return m_mapThemeIdHash;
}
 
inline bool TileId::operator==(TileId const &rhs) const
{
    return m_zoomLevel == rhs.m_zoomLevel && m_tileX == rhs.m_tileX && m_tileY == rhs.m_tileY && m_mapThemeIdHash == rhs.m_mapThemeIdHash;
}
 
inline bool TileId::operator<(TileId const &rhs) const
{
    if (m_zoomLevel < rhs.m_zoomLevel)
        return true;
    else if (m_zoomLevel == rhs.m_zoomLevel && m_tileX < rhs.m_tileX)
        return true;
    else if (m_zoomLevel == rhs.m_zoomLevel && m_tileX == rhs.m_tileX && m_tileY < rhs.m_tileY)
        return true;
    else if (m_zoomLevel == rhs.m_zoomLevel && m_tileX == rhs.m_tileX && m_tileY == rhs.m_tileY && m_mapThemeIdHash < rhs.m_mapThemeIdHash)
        return true;
    return false;
}
 
inline uint qHash(TileId const &tid)
{
    const quint64 tmp = ((quint64)(tid.zoomLevel()) << 36) + ((quint64)(tid.x()) << 18) + (quint64)(tid.y());
    return ::qHash(tmp) ^ tid.mapThemeIdHash();
}
 
}
 
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug, const Marble::TileId &);
#endif
 
#endif