qgsrasterresamplefilter.h

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/***************************************************************************
                         qgsrasterresamplefilter.h
                         -------------------
    begin                : December 2011
    copyright            : (C) 2011 by Marco Hugentobler
    email                : marco at sourcepole dot ch
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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 QGSRASTERRESAMPLEFILTER_H
#define QGSRASTERRESAMPLEFILTER_H

#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgsrasterinterface.h"
#include "qgsrasterresampler.h"

class QDomElement;

class CORE_EXPORT QgsRasterResampleFilter : public QgsRasterInterface
{
  public:
    QgsRasterResampleFilter( QgsRasterInterface *input = nullptr );

    QgsRasterResampleFilter *clone() const override SIP_FACTORY;

    int bandCount() const override;

    Qgis::DataType dataType( int bandNo ) const override;

    bool setInput( QgsRasterInterface *input ) override;

    QgsRasterBlock *block( int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback = nullptr ) override SIP_FACTORY;

    void setZoomedInResampler( QgsRasterResampler *r SIP_TRANSFER );
    const QgsRasterResampler *zoomedInResampler() const { return mZoomedInResampler.get(); }

    void setZoomedOutResampler( QgsRasterResampler *r SIP_TRANSFER );
    const QgsRasterResampler *zoomedOutResampler() const { return mZoomedOutResampler.get(); }

    void setMaxOversampling( double os ) { mMaxOversampling = os; }
    double maxOversampling() const { return mMaxOversampling; }

    void writeXml( QDomDocument &doc, QDomElement &parentElem ) const override;

    void readXml( const QDomElement &filterElem ) override;

  protected:
    std::unique_ptr< QgsRasterResampler > mZoomedInResampler;
    std::unique_ptr< QgsRasterResampler > mZoomedOutResampler;

    double mMaxOversampling = 2.0;

  private:
};

#endif // QGSRASTERRESAMPLEFILTER_H