qgsmbtiles.h

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/***************************************************************************
  qgsmbtiles.h
  --------------------------------------
  Date                 : January 2020
  Copyright            : (C) 2020 by Martin Dobias
  Email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSMBTILES_H
#define QGSMBTILES_H
 
#include <sqlite3.h>
 
#include "qgis_core.h"
#include "qgssqliteutils.h"
 
#define SIP_NO_FILE
 
class QImage;
class QgsRectangle;

class CORE_EXPORT QgsMbTiles
{
  public:
    explicit QgsMbTiles( const QString &filename );

    bool open();

    bool isOpen() const;

    bool finalize();

    bool create( bool deferIndexCreation = false );

    QString metadataValue( const QString &key ) const;

    void setMetadataValue( const QString &key, const QString &value ) const;

    QgsRectangle extent() const;

    QByteArray tileData( int z, int x, int y ) const;

    QImage tileDataAsImage( int z, int x, int y ) const;

    void setTileData( int z, int x, int y, const QByteArray &data ) const;

    struct TileData
    {
        int z = 0;
        int x = 0;
        int y = 0;
        QByteArray data;
    };

    void setTileData( const QList<TileData> &tiles ) const;

    QString lastError() const { return mLastError; }
 
  private:
    QString mFilename;
    sqlite3_database_unique_ptr mDatabase;
    bool mDeferredIndexCreation = false;
    mutable QString mLastError;
};
 
 
#endif // QGSMBTILES_H