695 lines
22 KiB
C++
695 lines
22 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) 2011 Artem Pavlenko
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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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// mapnik
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#include <mapnik/rule.hpp>
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#include <mapnik/layer.hpp>
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#include <mapnik/feature_type_style.hpp>
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#include <mapnik/debug.hpp>
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#include <mapnik/save_map.hpp>
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#include <mapnik/map.hpp>
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#include <mapnik/symbolizer.hpp>
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#include <mapnik/ptree_helpers.hpp>
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#include <mapnik/expression_string.hpp>
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#include <mapnik/raster_colorizer.hpp>
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#include <mapnik/text/placements/simple.hpp>
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#include <mapnik/text/placements/list.hpp>
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#include <mapnik/text/placements/dummy.hpp>
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#include <mapnik/image_compositing.hpp>
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#include <mapnik/image_scaling.hpp>
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#include <mapnik/image_filter.hpp>
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#include <mapnik/image_filter_types.hpp>
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#include <mapnik/parse_path.hpp>
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#include <mapnik/symbolizer_utils.hpp>
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#include <mapnik/transform_processor.hpp>
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#include <mapnik/group/group_rule.hpp>
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#include <mapnik/group/group_layout.hpp>
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#include <mapnik/group/group_symbolizer_properties.hpp>
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// boost
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#include <boost/algorithm/string.hpp>
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#include <boost/optional.hpp>
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#include <boost/property_tree/ptree.hpp>
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#include <boost/property_tree/xml_parser.hpp>
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// stl
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#include <iostream>
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namespace mapnik
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{
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using boost::property_tree::ptree;
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using boost::optional;
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void serialize_text_placements(ptree & node, text_placements_ptr const& p, bool explicit_defaults = false)
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{
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p->defaults.to_xml(node, explicit_defaults);
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// Known types:
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// - text_placements_dummy: no handling required
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// - text_placements_simple: positions string
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// - text_placements_list: list string
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text_placements_simple *simple = dynamic_cast<text_placements_simple *>(p.get());
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text_placements_list *list = dynamic_cast<text_placements_list *>(p.get());
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if (simple)
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{
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set_attr(node, "placement-type", "simple");
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set_attr(node, "placements", simple->get_positions());
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}
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if (list)
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{
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set_attr(node, "placement-type", "list");
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//dfl = last properties passed as default so only attributes that change are actually written
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text_symbolizer_properties *dfl = &(list->defaults);
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for (unsigned i=0; i < list->size(); ++i)
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{
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ptree & placement_node = node.push_back(ptree::value_type("Placement", ptree()))->second;
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list->get(i).to_xml(placement_node, explicit_defaults, *dfl);
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dfl = &(list->get(i));
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}
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}
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}
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void serialize_raster_colorizer(ptree & sym_node,
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raster_colorizer_ptr const& colorizer,
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bool explicit_defaults = false)
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{
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ptree & col_node = sym_node.push_back(
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ptree::value_type("RasterColorizer", ptree() ))->second;
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raster_colorizer dfl;
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if (colorizer->get_default_mode() != dfl.get_default_mode() || explicit_defaults)
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{
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set_attr(col_node, "default-mode", colorizer->get_default_mode());
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}
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if (colorizer->get_default_color() != dfl.get_default_color() || explicit_defaults)
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{
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set_attr(col_node, "default-color", colorizer->get_default_color());
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}
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if (colorizer->get_epsilon() != dfl.get_epsilon() || explicit_defaults)
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{
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set_attr(col_node, "epsilon", colorizer->get_epsilon());
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}
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colorizer_stops const &stops = colorizer->get_stops();
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for (std::size_t i=0; i<stops.size(); ++i)
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{
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ptree &stop_node = col_node.push_back( ptree::value_type("stop", ptree()) )->second;
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set_attr(stop_node, "value", stops[i].get_value());
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set_attr(stop_node, "color", stops[i].get_color());
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set_attr(stop_node, "mode", stops[i].get_mode().as_string());
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if (stops[i].get_label()!=std::string(""))
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set_attr(stop_node, "label", stops[i].get_label());
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}
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}
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void serialize_group_symbolizer_properties(ptree & sym_node,
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group_symbolizer_properties_ptr const& properties,
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bool explicit_defaults = false);
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template <typename Meta>
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class serialize_symbolizer_property : public boost::static_visitor<>
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{
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public:
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serialize_symbolizer_property(Meta const& meta,
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boost::property_tree::ptree & node)
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: meta_(meta),
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node_(node) {}
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void operator() ( mapnik::enumeration_wrapper const& e) const
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{
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auto const& convert_fun_ptr(std::get<2>(meta_));
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if ( convert_fun_ptr )
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{
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), convert_fun_ptr(e));
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}
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}
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void operator () ( path_expression_ptr const& expr) const
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{
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if (expr)
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{
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), path_processor::to_string(*expr));
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}
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}
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void operator () (text_placements_ptr const& expr) const
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{
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if (expr)
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{
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serialize_text_placements(node_, expr);
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}
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}
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void operator () (raster_colorizer_ptr const& expr) const
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{
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if (expr)
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{
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serialize_raster_colorizer(node_, expr);
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}
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}
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void operator () (transform_type const& expr) const
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{
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if (expr)
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{
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), transform_processor_type::to_string(*expr));
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}
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}
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void operator () (expression_ptr const& expr) const
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{
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if (expr)
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{
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), mapnik::to_expression_string(*expr));
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}
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}
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void operator () (dash_array const& dash) const
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{
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std::ostringstream os;
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for (std::size_t i = 0; i < dash.size(); ++i)
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{
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os << dash[i].first << ", " << dash[i].second;
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if ( i + 1 < dash.size() ) os << ",";
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}
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), os.str());
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}
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void operator () (group_symbolizer_properties_ptr const& properties) const
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{
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if (properties)
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{
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serialize_group_symbolizer_properties(node_, properties);
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}
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}
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template <typename T>
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void operator () ( T const& val ) const
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{
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node_.put("<xmlattr>." + std::string(std::get<0>(meta_)), val );
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}
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private:
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Meta const& meta_;
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boost::property_tree::ptree & node_;
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};
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class serialize_symbolizer : public boost::static_visitor<>
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{
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public:
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serialize_symbolizer( ptree & r , bool explicit_defaults)
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: rule_(r),
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explicit_defaults_(explicit_defaults) {}
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template <typename Symbolizer>
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void operator () ( Symbolizer const& sym)
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{
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ptree & sym_node = rule_.push_back(
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ptree::value_type(symbolizer_traits<Symbolizer>::name(), ptree()))->second;
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serialize_symbolizer_properties(sym_node,sym);
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}
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private:
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void serialize_symbolizer_properties( ptree & sym_node, symbolizer_base const& sym)
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{
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for (auto const& prop : sym.properties)
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{
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boost::apply_visitor(serialize_symbolizer_property<property_meta_type>(get_meta(prop.first), sym_node), prop.second);
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}
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}
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ptree & rule_;
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bool explicit_defaults_;
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};
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class serialize_group_layout : public boost::static_visitor<>
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{
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public:
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serialize_group_layout(ptree & parent_node, bool explicit_defaults)
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: parent_node_(parent_node),
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explicit_defaults_(explicit_defaults) {}
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void operator() ( simple_row_layout const& layout) const
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{
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ptree & layout_node = parent_node_.push_back(
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ptree::value_type("SimpleLayout", ptree() ))->second;
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simple_row_layout dfl;
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if (explicit_defaults_ || layout.get_item_margin() != dfl.get_item_margin())
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{
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set_attr(layout_node, "item-margin", layout.get_item_margin());
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}
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}
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void operator () ( pair_layout const& layout) const
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{
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ptree & layout_node = parent_node_.push_back(
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ptree::value_type("PairLayout", ptree() ))->second;
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pair_layout dfl;
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if (explicit_defaults_ || layout.get_item_margin() != dfl.get_item_margin())
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{
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set_attr(layout_node, "item-margin", layout.get_item_margin());
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}
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if (explicit_defaults_ || layout.get_max_difference() != dfl.get_max_difference())
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{
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set_attr(layout_node, "max-difference", layout.get_max_difference());
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}
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}
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template <typename T>
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void operator () ( T const& val ) const {}
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private:
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ptree & parent_node_;
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bool explicit_defaults_;
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};
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void serialize_group_rule( ptree & parent_node, const group_rule & r, bool explicit_defaults)
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{
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ptree & rule_node = parent_node.push_back(
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ptree::value_type("GroupRule", ptree() ))->second;
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group_rule dfl;
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std::string filter = mapnik::to_expression_string(*r.get_filter());
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std::string default_filter = mapnik::to_expression_string(*dfl.get_filter());
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if (filter != default_filter)
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{
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rule_node.push_back( ptree::value_type(
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"Filter", ptree()))->second.put_value( filter );
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}
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if (r.get_repeat_key())
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{
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std::string repeat_key = mapnik::to_expression_string(*r.get_repeat_key());
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rule_node.push_back( ptree::value_type(
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"RepeatKey", ptree()))->second.put_value( repeat_key );
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}
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rule::symbolizers::const_iterator begin = r.get_symbolizers().begin();
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rule::symbolizers::const_iterator end = r.get_symbolizers().end();
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serialize_symbolizer serializer( rule_node, explicit_defaults);
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std::for_each( begin, end , boost::apply_visitor( serializer ));
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}
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void serialize_group_symbolizer_properties(ptree & sym_node,
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group_symbolizer_properties_ptr const& properties,
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bool explicit_defaults)
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{
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boost::apply_visitor(serialize_group_layout(sym_node, explicit_defaults), properties->get_layout());
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for (auto const& rule : properties->get_rules())
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{
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serialize_group_rule(sym_node, *rule, explicit_defaults);
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}
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}
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void serialize_rule( ptree & style_node, const rule & r, bool explicit_defaults)
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{
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ptree & rule_node = style_node.push_back(
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ptree::value_type("Rule", ptree() ))->second;
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rule dfl;
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if ( r.get_name() != dfl.get_name() )
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{
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set_attr(rule_node, "name", r.get_name());
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}
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if ( r.has_else_filter() )
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{
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rule_node.push_back( ptree::value_type(
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"ElseFilter", ptree()));
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}
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else if ( r.has_also_filter() )
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{
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rule_node.push_back( ptree::value_type(
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"AlsoFilter", ptree()));
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}
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else
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{
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// filters were not comparable, perhaps should now compare expressions?
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expression_ptr const& expr = r.get_filter();
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std::string filter = mapnik::to_expression_string(*expr);
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std::string default_filter = mapnik::to_expression_string(*dfl.get_filter());
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if ( filter != default_filter)
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{
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rule_node.push_back( ptree::value_type(
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"Filter", ptree()))->second.put_value( filter );
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}
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}
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if (r.get_min_scale() != dfl.get_min_scale() )
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{
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ptree & min_scale = rule_node.push_back( ptree::value_type(
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"MinScaleDenominator", ptree()))->second;
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min_scale.put_value( r.get_min_scale() );
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}
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if (r.get_max_scale() != dfl.get_max_scale() )
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{
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ptree & max_scale = rule_node.push_back( ptree::value_type(
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"MaxScaleDenominator", ptree()))->second;
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max_scale.put_value( r.get_max_scale() );
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}
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rule::symbolizers::const_iterator begin = r.get_symbolizers().begin();
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rule::symbolizers::const_iterator end = r.get_symbolizers().end();
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serialize_symbolizer serializer( rule_node, explicit_defaults);
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std::for_each( begin, end , boost::apply_visitor( serializer ));
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}
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void serialize_style( ptree & map_node, std::string const& name, feature_type_style const& style, bool explicit_defaults )
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{
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ptree & style_node = map_node.push_back(
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ptree::value_type("Style", ptree()))->second;
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set_attr(style_node, "name", name);
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feature_type_style dfl;
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filter_mode_e filter_mode = style.get_filter_mode();
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if (filter_mode != dfl.get_filter_mode() || explicit_defaults)
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{
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set_attr(style_node, "filter-mode", filter_mode);
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}
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double opacity = style.get_opacity();
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if (opacity != dfl.get_opacity() || explicit_defaults)
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{
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set_attr(style_node, "opacity", opacity);
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}
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bool image_filters_inflate = style.image_filters_inflate();
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if (image_filters_inflate != dfl.image_filters_inflate() || explicit_defaults)
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{
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set_attr(style_node, "image-filters-inflate", image_filters_inflate);
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}
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boost::optional<composite_mode_e> comp_op = style.comp_op();
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if (comp_op)
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{
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set_attr(style_node, "comp-op", *comp_op_to_string(*comp_op));
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}
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else if (explicit_defaults)
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{
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set_attr(style_node, "comp-op", "src-over");
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}
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if (style.image_filters().size() > 0)
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{
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std::string filters_str;
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std::back_insert_iterator<std::string> sink(filters_str);
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if (generate_image_filters(sink, style.image_filters()))
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{
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set_attr(style_node, "image-filters", filters_str);
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}
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}
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if (style.direct_image_filters().size() > 0)
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{
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std::string filters_str;
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std::back_insert_iterator<std::string> sink(filters_str);
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if (generate_image_filters(sink, style.direct_image_filters()))
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{
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set_attr(style_node, "direct-image-filters", filters_str);
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}
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}
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for (auto const& r : style.get_rules())
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{
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serialize_rule( style_node, r , explicit_defaults);
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}
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}
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void serialize_fontset( ptree & map_node, std::string const& name, font_set const& fontset)
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{
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ptree & fontset_node = map_node.push_back(
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ptree::value_type("FontSet", ptree()))->second;
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set_attr(fontset_node, "name", name);
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for (auto const& name : fontset.get_face_names())
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{
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ptree & font_node = fontset_node.push_back(
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ptree::value_type("Font", ptree()))->second;
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set_attr(font_node, "face-name", name);
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}
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}
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void serialize_datasource( ptree & layer_node, datasource_ptr datasource)
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{
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ptree & datasource_node = layer_node.push_back(
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ptree::value_type("Datasource", ptree()))->second;
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for ( auto const& p : datasource->params())
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{
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boost::property_tree::ptree & param_node = datasource_node.push_back(
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boost::property_tree::ptree::value_type("Parameter",
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boost::property_tree::ptree()))->second;
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param_node.put("<xmlattr>.name", p.first );
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param_node.put_value( p.second );
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}
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}
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class serialize_type : public boost::static_visitor<>
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{
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public:
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serialize_type( boost::property_tree::ptree & node):
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node_(node) {}
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void operator () ( mapnik::value_integer /*val*/ ) const
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{
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node_.put("<xmlattr>.type", "int" );
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}
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void operator () ( mapnik::value_double /*val*/ ) const
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{
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node_.put("<xmlattr>.type", "float" );
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}
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void operator () ( std::string const& /*val*/ ) const
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{
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node_.put("<xmlattr>.type", "string" );
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}
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void operator () ( mapnik::value_null /*val*/ ) const
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{
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node_.put("<xmlattr>.type", "string" );
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}
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private:
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boost::property_tree::ptree & node_;
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|
};
|
|
|
|
void serialize_parameters( ptree & map_node, mapnik::parameters const& params)
|
|
{
|
|
if (params.size()) {
|
|
ptree & params_node = map_node.push_back(
|
|
ptree::value_type("Parameters", ptree()))->second;
|
|
|
|
for (auto const& p : params)
|
|
{
|
|
boost::property_tree::ptree & param_node = params_node.push_back(
|
|
boost::property_tree::ptree::value_type("Parameter",
|
|
boost::property_tree::ptree()))->second;
|
|
param_node.put("<xmlattr>.name", p.first );
|
|
param_node.put_value( p.second );
|
|
boost::apply_visitor(serialize_type(param_node),p.second);
|
|
}
|
|
}
|
|
}
|
|
|
|
void serialize_layer( ptree & map_node, const layer & layer, bool explicit_defaults )
|
|
{
|
|
ptree & layer_node = map_node.push_back(
|
|
ptree::value_type("Layer", ptree()))->second;
|
|
|
|
if ( layer.name() != "" )
|
|
{
|
|
set_attr( layer_node, "name", layer.name() );
|
|
}
|
|
|
|
if ( layer.srs() != "" )
|
|
{
|
|
set_attr( layer_node, "srs", layer.srs() );
|
|
}
|
|
|
|
if ( !layer.active() || explicit_defaults )
|
|
{
|
|
set_attr/*<bool>*/( layer_node, "status", layer.active() );
|
|
}
|
|
|
|
if ( layer.clear_label_cache() || explicit_defaults )
|
|
{
|
|
set_attr/*<bool>*/( layer_node, "clear-label-cache", layer.clear_label_cache() );
|
|
}
|
|
|
|
if ( layer.min_zoom() )
|
|
{
|
|
set_attr( layer_node, "minzoom", layer.min_zoom() );
|
|
}
|
|
|
|
if ( layer.max_zoom() != std::numeric_limits<double>::max() )
|
|
{
|
|
set_attr( layer_node, "maxzoom", layer.max_zoom() );
|
|
}
|
|
|
|
if ( layer.queryable() || explicit_defaults )
|
|
{
|
|
set_attr( layer_node, "queryable", layer.queryable() );
|
|
}
|
|
|
|
if ( layer.cache_features() || explicit_defaults )
|
|
{
|
|
set_attr/*<bool>*/( layer_node, "cache-features", layer.cache_features() );
|
|
}
|
|
|
|
if ( layer.group_by() != "" || explicit_defaults )
|
|
{
|
|
set_attr( layer_node, "group-by", layer.group_by() );
|
|
}
|
|
|
|
boost::optional<int> const& buffer_size = layer.buffer_size();
|
|
if ( buffer_size || explicit_defaults)
|
|
{
|
|
set_attr( layer_node, "buffer-size", *buffer_size );
|
|
}
|
|
|
|
optional<box2d<double> > const& maximum_extent = layer.maximum_extent();
|
|
if ( maximum_extent)
|
|
{
|
|
std::ostringstream s;
|
|
s << std::setprecision(16)
|
|
<< maximum_extent->minx() << "," << maximum_extent->miny() << ","
|
|
<< maximum_extent->maxx() << "," << maximum_extent->maxy();
|
|
set_attr( layer_node, "maximum-extent", s.str() );
|
|
}
|
|
|
|
for (auto const& name : layer.styles())
|
|
{
|
|
boost::property_tree::ptree & style_node = layer_node.push_back(
|
|
boost::property_tree::ptree::value_type("StyleName",
|
|
boost::property_tree::ptree()))->second;
|
|
style_node.put_value(name);
|
|
}
|
|
|
|
datasource_ptr datasource = layer.datasource();
|
|
if ( datasource )
|
|
{
|
|
serialize_datasource( layer_node, datasource );
|
|
}
|
|
}
|
|
|
|
void serialize_map(ptree & pt, Map const & map, bool explicit_defaults)
|
|
{
|
|
|
|
ptree & map_node = pt.push_back(ptree::value_type("Map", ptree() ))->second;
|
|
|
|
set_attr( map_node, "srs", map.srs() );
|
|
|
|
optional<color> const& c = map.background();
|
|
if ( c )
|
|
{
|
|
set_attr( map_node, "background-color", * c );
|
|
}
|
|
|
|
optional<std::string> const& image_filename = map.background_image();
|
|
if ( image_filename )
|
|
{
|
|
set_attr( map_node, "background-image", *image_filename );
|
|
}
|
|
|
|
composite_mode_e comp_op = map.background_image_comp_op();
|
|
if (comp_op != src_over || explicit_defaults)
|
|
{
|
|
set_attr(map_node, "background-image-comp-op", *comp_op_to_string(comp_op));
|
|
}
|
|
|
|
double opacity = map.background_image_opacity();
|
|
if (opacity != 1.0 || explicit_defaults)
|
|
{
|
|
set_attr(map_node, "background-image-opacity", opacity);
|
|
}
|
|
|
|
|
|
int buffer_size = map.buffer_size();
|
|
if ( buffer_size || explicit_defaults)
|
|
{
|
|
set_attr( map_node, "buffer-size", buffer_size );
|
|
}
|
|
|
|
std::string const& base_path = map.base_path();
|
|
if ( !base_path.empty() || explicit_defaults)
|
|
{
|
|
set_attr( map_node, "base", base_path );
|
|
}
|
|
|
|
optional<box2d<double> > const& maximum_extent = map.maximum_extent();
|
|
if ( maximum_extent)
|
|
{
|
|
std::ostringstream s;
|
|
s << std::setprecision(16)
|
|
<< maximum_extent->minx() << "," << maximum_extent->miny() << ","
|
|
<< maximum_extent->maxx() << "," << maximum_extent->maxy();
|
|
set_attr( map_node, "maximum-extent", s.str() );
|
|
}
|
|
|
|
|
|
for (auto const& kv : map.fontsets())
|
|
{
|
|
serialize_fontset( map_node, kv.first, kv.second);
|
|
}
|
|
|
|
serialize_parameters( map_node, map.get_extra_parameters());
|
|
|
|
for ( auto const& kv : map.styles())
|
|
{
|
|
serialize_style( map_node, kv.first, kv.second, explicit_defaults);
|
|
}
|
|
|
|
for (auto const& layer : map.layers())
|
|
{
|
|
serialize_layer( map_node, layer, explicit_defaults );
|
|
}
|
|
}
|
|
|
|
void save_map(Map const & map, std::string const& filename, bool explicit_defaults)
|
|
{
|
|
ptree pt;
|
|
serialize_map(pt,map,explicit_defaults);
|
|
write_xml(filename,pt,std::locale(),boost::property_tree::xml_writer_make_settings(' ', 2));
|
|
}
|
|
|
|
std::string save_map_to_string(Map const & map, bool explicit_defaults)
|
|
{
|
|
ptree pt;
|
|
serialize_map(pt,map,explicit_defaults);
|
|
std::ostringstream ss;
|
|
write_xml(ss,pt,boost::property_tree::xml_writer_make_settings(' ', 2));
|
|
return ss.str();
|
|
}
|
|
|
|
}
|