mapnik/plugins/input/raster/raster_datasource.hpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/
//$Id: raster_datasource.hh 44 2005-04-22 18:53:54Z pavlenko $

#ifndef RASTER_DATASOURCE_HPP
#define RASTER_DATASOURCE_HPP

#include <mapnik/envelope.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/datasource.hpp>

class raster_datasource : public mapnik::datasource
{
private:
   std::string                  filename_;
   std::string                  format_;
   mutable mapnik::Envelope<double>     extent_;
   mapnik::layer_descriptor     desc_;
   mutable unsigned                     width_;
   mutable unsigned                     height_;
   static std::string           name_;  
public:
   raster_datasource(const mapnik::parameters& params, bool bind=true);
   virtual ~raster_datasource();
   int type() const;
   static std::string name();
   mapnik::featureset_ptr features(const mapnik::query& q) const;
   mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt) const;
   mapnik::Envelope<double> envelope() const;
   mapnik::layer_descriptor get_descriptor() const;
   void bind() const;
private:
   //no copying
   raster_datasource(const raster_datasource&);
   raster_datasource& operator=(const raster_datasource&);
   //
};

#endif //RASTER_DATASOURCE_HPP