Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

57 lines (41 sloc) 1.762 kb
#ifndef PYTHON_DATASOURCE_HPP
#define PYTHON_DATASOURCE_HPP
// mapnik
#include <mapnik/datasource.hpp>
// boost
#include <boost/python.hpp>
class python_datasource : public mapnik::datasource
{
public:
// constructor
// arguments must not change
python_datasource(mapnik::parameters const& params, bool bind=true);
// destructor
virtual ~python_datasource ();
// mandatory: type of the plugin, used to match at runtime
mapnik::datasource::datasource_t type() const;
// mandatory: name of the plugin
static const char* name();
// mandatory: function to query features by box2d
// this is called when rendering, specifically in feature_style_processor.hpp
mapnik::featureset_ptr features(mapnik::query const& q) const;
// mandatory: function to query features by point (coord2d)
// not used by rendering, but available to calling applications
mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt, double tol = 0) const;
// mandatory: return the box2d of the datasource
// called during rendering to determine if the layer should be processed
mapnik::box2d<double> envelope() const;
// mandatory: optionally return the overal geometry type of the datasource
boost::optional<mapnik::datasource::geometry_t> get_geometry_type() const;
// mandatory: return the layer descriptor
mapnik::layer_descriptor get_descriptor() const;
// mandatory: will bind the datasource given params
void bind() const;
private:
static const char* name_;
mutable mapnik::layer_descriptor desc_;
const std::string factory_;
std::map<std::string, std::string> kwargs_;
mutable boost::python::object datasource_;
};
#endif // PYTHON_DATASOURCE_HPP
Jump to Line
Something went wrong with that request. Please try again.