f1393cc019
bool hit_test(double x, double y, double tol);
2. added image_view(unsigned x, unsigned y, unsigned width, unsigned height)
allowing to select region from image data e.g (in Python):
im = Image(2048,2048)
view = im.view(0,0,256,256)
save_to_file(filename,type, view)
3. changed envelope method to return vy value in datasource classes
4. features_at_point impl for shape and postgis plug-ins
119 lines
4.6 KiB
C++
119 lines
4.6 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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//$Id: mapnik_map.cc 17 2005-03-08 23:58:43Z pavlenko $
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#include <boost/python.hpp>
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#include <boost/python/detail/api_placeholder.hpp>
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#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
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#include <mapnik/layer.hpp>
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#include <mapnik/map.hpp>
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using mapnik::Color;
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using mapnik::coord;
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using mapnik::Envelope;
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using mapnik::Layer;
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using mapnik::Map;
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struct map_pickle_suite : boost::python::pickle_suite
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{
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static boost::python::tuple
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getinitargs(const Map& m)
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{
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return boost::python::make_tuple(m.getWidth(),m.getHeight(),m.srs());
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}
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static boost::python::tuple
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getstate(const Map& m)
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{
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boost::python::list l;
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for (unsigned i=0;i<m.layerCount();++i)
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{
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l.append(m.getLayer(i));
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}
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return boost::python::make_tuple(m.getCurrentExtent(),m.getBackground(),l);
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}
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static void
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setstate (Map& m, boost::python::tuple state)
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{
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using namespace boost::python;
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if (len(state) != 3)
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{
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PyErr_SetObject(PyExc_ValueError,
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("expected 3-item tuple in call to __setstate__; got %s"
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% state).ptr()
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);
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throw_error_already_set();
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}
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Envelope<double> ext = extract<Envelope<double> >(state[0]);
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Color bg = extract<Color>(state[1]);
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m.zoomToBox(ext);
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m.setBackground(bg);
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boost::python::list l=extract<boost::python::list>(state[2]);
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for (int i=0;i<len(l);++i)
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{
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m.addLayer(extract<Layer>(l[i]));
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}
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}
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};
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std::vector<Layer>& (Map::*layers_nonconst)() = &Map::layers;
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std::vector<Layer> const& (Map::*layers_const)() const = &Map::layers;
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void export_map()
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{
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using namespace boost::python;
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class_<std::vector<Layer> >("Layers")
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.def(vector_indexing_suite<std::vector<Layer> >())
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;
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class_<Map>("Map","The map object.",init<int,int,optional<std::string const&> >())
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.add_property("width",&Map::getWidth,"The width of the map image.")
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.add_property("height",&Map::getHeight,"The height of the map image.")
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.add_property("srs",make_function(&Map::srs,return_value_policy<copy_const_reference>()),
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&Map::set_srs,"Spatial reference in proj4 format e.g. \"+proj=latlong +datum=WGS84\"")
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.add_property("background",make_function
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(&Map::getBackground,return_value_policy<copy_const_reference>()),
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&Map::setBackground, "The background color of the map.")
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.def("envelope",make_function(&Map::getCurrentExtent,
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return_value_policy<copy_const_reference>()),
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"The current extent of the map")
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.def("scale", &Map::scale)
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.def("zoom_all",&Map::zoom_all,
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"Set the geographical extent of the map "
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"to the combined extents of all active layers")
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.def("zoom_to_box",&Map::zoomToBox, "Set the geographical extent of the map.")
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.def("pan",&Map::pan)
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.def("zoom",&Map::zoom)
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.def("zoom_all",&Map::zoom_all)
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.def("pan_and_zoom",&Map::pan_and_zoom)
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.def("append_style",&Map::insert_style)
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.def("remove_style",&Map::remove_style)
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.add_property("layers",make_function
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(layers_nonconst,return_value_policy<reference_existing_object>()),
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"Get the list of layers in this map.")
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.def("find_style",&Map::find_style,return_value_policy<copy_const_reference>())
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.def_pickle(map_pickle_suite())
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;
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}
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