/***************************************************************************** * * 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 * *****************************************************************************/ // $Id$ // mapnik #include #include // boost #include #include #include #include #include #include // stl #include namespace mapnik { using boost::property_tree::ptree; using boost::optional; std::string guess_type( const std::string & filename ) { std::string::size_type idx = filename.find_last_of("."); if ( idx != std::string::npos ) { return filename.substr( idx + 1 ); } return ""; } class serialize_symbolizer : public boost::static_visitor<> { public: serialize_symbolizer( ptree & r ) : rule_(r) {} void operator () ( const point_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("PointSymbolizer", ptree()))->second; add_image_attributes( sym_node, sym ); } void operator () ( const line_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("LineSymbolizer", ptree()))->second; const stroke & strk = sym.get_stroke(); stroke dfl = stroke(); if ( strk.get_color() != dfl.get_color() ) { set_css( sym_node, "stroke", strk.get_color() ); } if ( strk.get_width() != dfl.get_width() ) { set_css( sym_node, "stroke-width", strk.get_width() ); } if ( strk.get_opacity() != dfl.get_opacity() ) { set_css( sym_node, "stroke-opacity", strk.get_opacity() ); } if ( strk.get_line_join() != dfl.get_line_join() ) { set_css( sym_node, "stroke-linejoin", strk.get_line_join() ); } if ( strk.get_line_cap() != dfl.get_line_cap() ) { set_css( sym_node, "stroke-linecap", strk.get_line_cap() ); } if ( ! strk.get_dash_array().empty() ) { std::ostringstream os; const dash_array & dashes = strk.get_dash_array(); for (unsigned i = 0; i < dashes.size(); ++i) { os << dashes[i].first << ", " << dashes[i].second; if ( i + 1 < dashes.size() ) os << ", "; } set_css( sym_node, "stroke-dasharray", os.str() ); } } void operator () ( const line_pattern_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("LinePatternSymbolizer", ptree()))->second; add_image_attributes( sym_node, sym ); } void operator () ( const polygon_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("PolygonSymbolizer", ptree()))->second; polygon_symbolizer dfl; if ( sym.get_fill() != dfl.get_fill() ) { set_css( sym_node, "fill", sym.get_fill() ); } if ( sym.get_opacity() != dfl.get_opacity() ) { set_css( sym_node, "fill-opacity", sym.get_opacity() ); } } void operator () ( const polygon_pattern_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("PolygonPatternSymbolizer", ptree()))->second; add_image_attributes( sym_node, sym ); } void operator () ( const raster_symbolizer & sym ) { rule_.push_back( ptree::value_type("RasterSymbolizer", ptree())); } void operator () ( const shield_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("ShieldSymbolizer", ptree()))->second; add_font_attributes( sym_node, sym); add_image_attributes( sym_node, sym); } void operator () ( const text_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("TextSymbolizer", ptree()))->second; add_font_attributes( sym_node, sym); } void operator () ( const building_symbolizer & sym ) { ptree & sym_node = rule_.push_back( ptree::value_type("BuildingSymbolizer", ptree()))->second; building_symbolizer dfl; if ( sym.get_fill() != dfl.get_fill() ) { set_css( sym_node, "fill", sym.get_fill() ); } if ( sym.get_opacity() != dfl.get_opacity() ) { set_css( sym_node, "fill-opacity", sym.get_opacity() ); } } void operator () ( markers_symbolizer const& ) { // FIXME!!!!! } private: serialize_symbolizer(); void add_image_attributes(ptree & node, const symbolizer_with_image & sym) { const std::string & filename = sym.get_filename(); if ( ! filename.empty() ) { set_attr( node, "file", filename ); set_attr( node, "type", guess_type( filename ) ); boost::shared_ptr img = sym.get_image(); if ( img ) { if ( img->width() > 0) { set_attr( node, "width", img->width() ); } if ( img->height() > 0) { set_attr( node, "height", img->height() ); } } } } void add_font_attributes(ptree & node, const text_symbolizer & sym) { const std::string & name = sym.get_name(); if ( ! name.empty() ) { set_attr( node, "name", name ); } const std::string & face_name = sym.get_face_name(); if ( ! face_name.empty() ) { set_attr( node, "face_name", face_name ); } const std::string & fontset_name = sym.get_fontset().get_name(); if ( ! fontset_name.empty() ) { set_attr( node, "fontset_name", fontset_name ); } set_attr( node, "size", sym.get_text_size() ); set_attr( node, "fill", sym.get_fill() ); // pseudo-default-construct a text_symbolizer. It is used // to avoid printing ofattributes with default values without // repeating the default values here. // maybe add a real, explicit default-ctor? text_symbolizer dfl("", "", 0, color(0,0,0) ); position displacement = sym.get_displacement(); if ( displacement.get<0>() != dfl.get_displacement().get<0>() ) { set_attr( node, "dx", displacement.get<0>() ); } if ( displacement.get<1>() != dfl.get_displacement().get<1>() ) { set_attr( node, "dy", displacement.get<1>() ); } if (sym.get_label_placement() != dfl.get_label_placement() ) { set_attr( node, "placement", sym.get_label_placement() ); } if (sym.get_halo_radius() != dfl.get_halo_radius()) { set_attr( node, "halo_radius", sym.get_halo_radius() ); } const color & c = sym.get_halo_fill(); if ( c != dfl.get_halo_fill() ) { set_attr( node, "halo_fill", c ); } if (sym.get_text_ratio() != dfl.get_text_ratio() ) { set_attr( node, "text_ratio", sym.get_text_ratio() ); } if (sym.get_wrap_width() != dfl.get_wrap_width()) { set_attr( node, "wrap_width", sym.get_wrap_width() ); } if (sym.get_label_spacing() != dfl.get_label_spacing()) { set_attr( node, "spacing", sym.get_label_spacing() ); } if (sym.get_minimum_distance() != dfl.get_minimum_distance()) { set_attr( node, "min_distance", sym.get_minimum_distance() ); } if (sym.get_allow_overlap() != dfl.get_allow_overlap() ) { set_attr( node, "allow_overlap", sym.get_allow_overlap() ); } } ptree & rule_; }; void serialize_rule( ptree & style_node, const rule_type & rule) { ptree & rule_node = style_node.push_back( ptree::value_type("Rule", ptree() ))->second; rule_type dfl; if ( rule.get_name() != dfl.get_name() ) { set_attr(rule_node, "name", rule.get_name()); } if ( rule.get_title() != dfl.get_title() ) { set_attr(rule_node, "title", rule.get_title()); } if ( rule.has_else_filter() ) { rule_node.push_back( ptree::value_type( "ElseFilter", ptree())); } else { // filters are not comparable, so compare strings for now std::string filter = rule.get_filter()->to_string(); std::string default_filter = dfl.get_filter()->to_string(); if ( filter != default_filter) { rule_node.push_back( ptree::value_type( "Filter", ptree()))->second.put_own( filter ); } } if (rule.get_min_scale() != dfl.get_min_scale()) { ptree & min_scale = rule_node.push_back( ptree::value_type( "MinScaleDenominator", ptree()))->second; min_scale.put_own( rule.get_min_scale() ); } if (rule.get_max_scale() != dfl.get_max_scale() ) { ptree & max_scale = rule_node.push_back( ptree::value_type( "MaxScaleDenominator", ptree()))->second; max_scale.put_own( rule.get_max_scale() ); } symbolizers::const_iterator begin = rule.get_symbolizers().begin(); symbolizers::const_iterator end = rule.get_symbolizers().end(); serialize_symbolizer serializer( rule_node ); std::for_each( begin, end , boost::apply_visitor( serializer )); } void serialize_style( ptree & map_node, Map::const_style_iterator style_it ) { const feature_type_style & style = style_it->second; const std::string & name = style_it->first; ptree & style_node = map_node.push_back( ptree::value_type("Style", ptree()))->second; set_attr(style_node, "name", name); rules::const_iterator it = style.get_rules().begin(); rules::const_iterator end = style.get_rules().end(); for (; it != end; ++it) { serialize_rule( style_node, * it ); } } void serialize_fontset( ptree & map_node, Map::const_fontset_iterator fontset_it ) { const FontSet & fontset = fontset_it->second; const std::string & name = fontset_it->first; ptree & fontset_node = map_node.push_back( ptree::value_type("FontSet", ptree()))->second; set_attr(fontset_node, "name", name); std::vector::const_iterator it = fontset.get_face_names().begin(); std::vector::const_iterator end = fontset.get_face_names().end(); for (; it != end; ++it) { ptree & font_node = fontset_node.push_back( ptree::value_type("Font", ptree()))->second; set_attr(font_node, "face_name", *it); } } void serialize_datasource( ptree & layer_node, datasource_ptr datasource) { ptree & datasource_node = layer_node.push_back( ptree::value_type("Datasource", ptree()))->second; parameters::const_iterator it = datasource->params().begin(); parameters::const_iterator end = datasource->params().end(); for (; it != end; ++it) { boost::property_tree::ptree & param_node = datasource_node.push_back( boost::property_tree::ptree::value_type("Parameter", boost::property_tree::ptree()))->second; param_node.put(".name", it->first ); param_node.put_own( it->second ); } } void serialize_layer( ptree & map_node, const Layer & layer ) { 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.abstract() != "" ) { set_attr( layer_node, "abstract", layer.abstract() ); } if ( layer.title() != "" ) { set_attr( layer_node, "title", layer.title() ); } if ( layer.srs() != "" ) { set_attr( layer_node, "srs", layer.srs() ); } set_attr/**/( layer_node, "status", layer.isActive() ); set_attr/**/( layer_node, "clear_label_cache", layer.clear_label_cache() ); if ( layer.getMinZoom() ) { set_attr( layer_node, "minzoom", layer.getMinZoom() ); } if ( layer.getMaxZoom() != std::numeric_limits::max() ) { set_attr( layer_node, "maxzoom", layer.getMaxZoom() ); } if ( layer.isQueryable() ) { set_attr( layer_node, "queryable", layer.isQueryable() ); } std::vector const& style_names = layer.styles(); for (unsigned i = 0; i < style_names.size(); ++i) { 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_own( style_names[i] ); } datasource_ptr datasource = layer.datasource(); if ( datasource ) { serialize_datasource( layer_node, datasource ); } } void save_map(Map const & map, std::string const& filename) { ptree pt; ptree & map_node = pt.push_back(ptree::value_type("Map", ptree() ))->second; set_attr( map_node, "srs", map.srs() ); optional c = map.background(); if ( c ) { set_attr( map_node, "bgcolor", * c ); } { Map::const_fontset_iterator it = map.fontsets().begin(); Map::const_fontset_iterator end = map.fontsets().end(); for (; it != end; ++it) { serialize_fontset( map_node, it); } } Map::const_style_iterator it = map.styles().begin(); Map::const_style_iterator end = map.styles().end(); for (; it != end; ++it) { serialize_style( map_node, it); } std::vector const & layers = map.layers(); for (unsigned i = 0; i < layers.size(); ++i ) { serialize_layer( map_node, layers[i] ); } write_xml(filename,pt); } }