mapnik/bindings/python/mapnik_symbolizer.cpp
artemp 95cea92a4a convert all boost::variant to util::variant
apart from topojson (TODO)
2014-08-12 13:40:45 +01:00

422 lines
14 KiB
C++

/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2013 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
*
*****************************************************************************/
#include <mapnik/config.hpp>
#include "boost_std_shared_shim.hpp" // FIXME - do we need it?
// The functions in this file produce deprecation warnings.
// But as shield symbolizer doesn't fully support more than one
// placement from python yet these functions are actually the
// correct ones.
#define NO_DEPRECATION_WARNINGS
// boost
#include <boost/python.hpp>
#include <boost/python/suite/indexing/map_indexing_suite.hpp>
// mapnik
#include <mapnik/symbolizer.hpp>
#include <mapnik/symbolizer_hash.hpp>
#include <mapnik/symbolizer_utils.hpp>
#include <mapnik/symbolizer_keys.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/parse_path.hpp>
#include <mapnik/path_expression.hpp>
#include "mapnik_enumeration.hpp"
#include "mapnik_svg.hpp"
#include <mapnik/graphics.hpp>
#include <mapnik/expression_node.hpp>
#include <mapnik/value_error.hpp>
#include <mapnik/marker_cache.hpp> // for known_svg_prefix_
#include <mapnik/group/group_layout.hpp>
#include <mapnik/group/group_rule.hpp>
#include <mapnik/group/group_symbolizer_properties.hpp>
#include <mapnik/util/variant.hpp>
// stl
#include <sstream>
using mapnik::symbolizer;
using mapnik::point_symbolizer;
using mapnik::line_symbolizer;
using mapnik::line_pattern_symbolizer;
using mapnik::polygon_symbolizer;
using mapnik::polygon_pattern_symbolizer;
using mapnik::raster_symbolizer;
using mapnik::shield_symbolizer;
using mapnik::text_symbolizer;
using mapnik::building_symbolizer;
using mapnik::markers_symbolizer;
using mapnik::debug_symbolizer;
using mapnik::group_symbolizer;
using mapnik::symbolizer_base;
using mapnik::color;
using mapnik::path_processor_type;
using mapnik::path_expression_ptr;
using mapnik::guess_type;
using mapnik::expression_ptr;
using mapnik::parse_path;
namespace {
using namespace boost::python;
void __setitem__(mapnik::symbolizer_base & sym, std::string const& name, mapnik::symbolizer_base::value_type const& val)
{
put(sym, mapnik::get_key(name), val);
}
std::shared_ptr<mapnik::symbolizer_base::value_type> numeric_wrapper(const object& arg)
{
std::shared_ptr<mapnik::symbolizer_base::value_type> result;
if (PyBool_Check(arg.ptr()))
{
mapnik::value_bool val = extract<mapnik::value_bool>(arg);
result.reset(new mapnik::symbolizer_base::value_type(val));
}
else if (PyFloat_Check(arg.ptr()))
{
mapnik::value_double val = extract<mapnik::value_double>(arg);
result.reset(new mapnik::symbolizer_base::value_type(val));
}
else
{
mapnik::value_integer val = extract<mapnik::value_integer>(arg);
result.reset(new mapnik::symbolizer_base::value_type(val));
}
return result;
}
struct extract_python_object : public mapnik::util::static_visitor<boost::python::object>
{
using result_type = boost::python::object;
template <typename T>
auto operator() (T const& val) const -> result_type
{
return result_type(val); // wrap into python object
}
};
boost::python::object __getitem__(mapnik::symbolizer_base const& sym, std::string const& name)
{
using const_iterator = symbolizer_base::cont_type::const_iterator;
mapnik::keys key = mapnik::get_key(name);
const_iterator itr = sym.properties.find(key);
if (itr != sym.properties.end())
{
return mapnik::util::apply_visitor(extract_python_object(), itr->second);
}
//mapnik::property_meta_type const& meta = mapnik::get_meta(key);
//return mapnik::util::apply_visitor(extract_python_object(), std::get<1>(meta));
return boost::python::object();
}
std::string __str__(mapnik::symbolizer const& sym)
{
return mapnik::util::apply_visitor(mapnik::symbolizer_to_json(), sym);
}
std::string get_symbolizer_type(symbolizer const& sym)
{
return mapnik::symbolizer_name(sym); // FIXME - do we need this ?
}
std::size_t hash_impl(symbolizer const& sym)
{
return mapnik::util::apply_visitor(mapnik::symbolizer_hash_visitor(), sym);
}
template <typename T>
std::size_t hash_impl_2(T const& sym)
{
return mapnik::symbolizer_hash::value<T>(sym);
}
struct extract_underlying_type_visitor : mapnik::util::static_visitor<boost::python::object>
{
template <typename T>
boost::python::object operator() (T const& sym) const
{
return boost::python::object(sym);
}
};
boost::python::object extract_underlying_type(symbolizer const& sym)
{
return mapnik::util::apply_visitor(extract_underlying_type_visitor(), sym);
}
}
void export_symbolizer()
{
using namespace boost::python;
//implicitly_convertible<mapnik::value_bool, mapnik::symbolizer_base::value_type>();
implicitly_convertible<mapnik::value_integer, mapnik::symbolizer_base::value_type>();
implicitly_convertible<mapnik::value_double, mapnik::symbolizer_base::value_type>();
implicitly_convertible<std::string, mapnik::symbolizer_base::value_type>();
implicitly_convertible<mapnik::color, mapnik::symbolizer_base::value_type>();
implicitly_convertible<mapnik::expression_ptr, mapnik::symbolizer_base::value_type>();
implicitly_convertible<mapnik::enumeration_wrapper, mapnik::symbolizer_base::value_type>();
implicitly_convertible<std::shared_ptr<mapnik::group_symbolizer_properties>, mapnik::symbolizer_base::value_type>();
enum_<mapnik::keys>("keys")
.value("gamma", mapnik::keys::gamma)
.value("gamma_method",mapnik::keys::gamma_method)
;
class_<symbolizer>("Symbolizer",no_init)
.def("type",get_symbolizer_type)
.def("__hash__",hash_impl)
.def("extract", extract_underlying_type)
;
class_<symbolizer_base::value_type>("NumericWrapper")
.def("__init__", make_constructor(numeric_wrapper))
;
class_<symbolizer_base>("SymbolizerBase",no_init)
.def("__setitem__",&__setitem__)
.def("__setattr__",&__setitem__)
.def("__getitem__",&__getitem__)
.def("__getattr__",&__getitem__)
.def("__str__", &__str__)
.def(self == self) // __eq__
;
}
void export_shield_symbolizer()
{
using namespace boost::python;
class_< shield_symbolizer, bases<text_symbolizer> >("ShieldSymbolizer",
init<>("Default ctor"))
.def("__hash__",hash_impl_2<shield_symbolizer>)
;
}
void export_polygon_symbolizer()
{
using namespace boost::python;
class_<polygon_symbolizer, bases<symbolizer_base> >("PolygonSymbolizer",
init<>("Default ctor"))
.def("__hash__",hash_impl_2<polygon_symbolizer>)
;
}
void export_polygon_pattern_symbolizer()
{
using namespace boost::python;
mapnik::enumeration_<mapnik::pattern_alignment_e>("pattern_alignment")
.value("LOCAL",mapnik::LOCAL_ALIGNMENT)
.value("GLOBAL",mapnik::GLOBAL_ALIGNMENT)
;
class_<polygon_pattern_symbolizer>("PolygonPatternSymbolizer",
init<>("Default ctor"))
.def("__hash__",hash_impl_2<polygon_pattern_symbolizer>)
;
}
void export_raster_symbolizer()
{
using namespace boost::python;
class_<raster_symbolizer, bases<symbolizer_base> >("RasterSymbolizer",
init<>("Default ctor"))
;
}
void export_point_symbolizer()
{
using namespace boost::python;
mapnik::enumeration_<mapnik::point_placement_e>("point_placement")
.value("CENTROID",mapnik::CENTROID_POINT_PLACEMENT)
.value("INTERIOR",mapnik::INTERIOR_POINT_PLACEMENT)
;
class_<point_symbolizer, bases<symbolizer_base> >("PointSymbolizer",
init<>("Default Point Symbolizer - 4x4 black square"))
.def("__hash__",hash_impl_2<point_symbolizer>)
;
}
void export_markers_symbolizer()
{
using namespace boost::python;
mapnik::enumeration_<mapnik::marker_placement_e>("marker_placement")
.value("POINT_PLACEMENT",mapnik::MARKER_POINT_PLACEMENT)
.value("INTERIOR_PLACEMENT",mapnik::MARKER_INTERIOR_PLACEMENT)
.value("LINE_PLACEMENT",mapnik::MARKER_LINE_PLACEMENT)
;
mapnik::enumeration_<mapnik::marker_multi_policy_e>("marker_multi_policy")
.value("EACH",mapnik::MARKER_EACH_MULTI)
.value("WHOLE",mapnik::MARKER_WHOLE_MULTI)
.value("LARGEST",mapnik::MARKER_LARGEST_MULTI)
;
class_<markers_symbolizer, bases<symbolizer_base> >("MarkersSymbolizer",
init<>("Default Markers Symbolizer - circle"))
.def("__hash__",hash_impl_2<markers_symbolizer>)
;
}
void export_line_symbolizer()
{
using namespace boost::python;
mapnik::enumeration_<mapnik::line_rasterizer_e>("line_rasterizer")
.value("FULL",mapnik::RASTERIZER_FULL)
.value("FAST",mapnik::RASTERIZER_FAST)
;
mapnik::enumeration_<mapnik::line_cap_e>("stroke_linecap",
"The possible values for a line cap used when drawing\n"
"with a stroke.\n")
.value("BUTT_CAP",mapnik::BUTT_CAP)
.value("SQUARE_CAP",mapnik::SQUARE_CAP)
.value("ROUND_CAP",mapnik::ROUND_CAP)
;
mapnik::enumeration_<mapnik::line_join_e>("stroke_linejoin",
"The possible values for the line joining mode\n"
"when drawing with a stroke.\n")
.value("MITER_JOIN",mapnik::MITER_JOIN)
.value("MITER_REVERT_JOIN",mapnik::MITER_REVERT_JOIN)
.value("ROUND_JOIN",mapnik::ROUND_JOIN)
.value("BEVEL_JOIN",mapnik::BEVEL_JOIN)
;
class_<line_symbolizer, bases<symbolizer_base> >("LineSymbolizer",
init<>("Default LineSymbolizer - 1px solid black"))
.def("__hash__",hash_impl_2<line_symbolizer>)
;
}
void export_line_pattern_symbolizer()
{
using namespace boost::python;
class_<line_pattern_symbolizer, bases<symbolizer_base> >("LinePatternSymbolizer",
init<> ("Default LinePatternSymbolizer"))
.def("__hash__",hash_impl_2<line_pattern_symbolizer>)
;
}
void export_debug_symbolizer()
{
using namespace boost::python;
mapnik::enumeration_<mapnik::debug_symbolizer_mode_e>("debug_symbolizer_mode")
.value("COLLISION",mapnik::DEBUG_SYM_MODE_COLLISION)
.value("VERTEX",mapnik::DEBUG_SYM_MODE_VERTEX)
;
class_<debug_symbolizer, bases<symbolizer_base> >("DebugSymbolizer",
init<>("Default debug Symbolizer"))
.def("__hash__",hash_impl_2<debug_symbolizer>)
;
}
void export_building_symbolizer()
{
using namespace boost::python;
class_<building_symbolizer, bases<symbolizer_base> >("BuildingSymbolizer",
init<>("Default BuildingSymbolizer"))
.def("__hash__",hash_impl_2<building_symbolizer>)
;
}
namespace {
void group_symbolizer_properties_set_layout_simple(mapnik::group_symbolizer_properties &p,
mapnik::simple_row_layout &s)
{
p.set_layout(s);
}
void group_symbolizer_properties_set_layout_pair(mapnik::group_symbolizer_properties &p,
mapnik::pair_layout &s)
{
p.set_layout(s);
}
std::shared_ptr<mapnik::group_rule> group_rule_construct1(mapnik::expression_ptr p)
{
return std::make_shared<mapnik::group_rule>(p, mapnik::expression_ptr());
}
} // anonymous namespace
void export_group_symbolizer()
{
using namespace boost::python;
using mapnik::group_rule;
using mapnik::simple_row_layout;
using mapnik::pair_layout;
using mapnik::group_symbolizer_properties;
class_<group_rule, std::shared_ptr<group_rule> >("GroupRule",
init<expression_ptr, expression_ptr>())
.def("__init__", boost::python::make_constructor(group_rule_construct1))
.def("append", &group_rule::append)
.def("set_filter", &group_rule::set_filter)
.def("set_repeat_key", &group_rule::set_repeat_key)
;
class_<simple_row_layout>("SimpleRowLayout")
.def("item_margin", &simple_row_layout::get_item_margin)
.def("set_item_margin", &simple_row_layout::set_item_margin)
;
class_<pair_layout>("PairLayout")
.def("item_margin", &simple_row_layout::get_item_margin)
.def("set_item_margin", &simple_row_layout::set_item_margin)
.def("max_difference", &pair_layout::get_max_difference)
.def("set_max_difference", &pair_layout::set_max_difference)
;
class_<group_symbolizer_properties, std::shared_ptr<group_symbolizer_properties> >("GroupSymbolizerProperties")
.def("add_rule", &group_symbolizer_properties::add_rule)
.def("set_layout", &group_symbolizer_properties_set_layout_simple)
.def("set_layout", &group_symbolizer_properties_set_layout_pair)
;
class_<group_symbolizer, bases<symbolizer_base> >("GroupSymbolizer",
init<>("Default GroupSymbolizer"))
.def("__hash__",hash_impl_2<group_symbolizer>)
;
}