142 lines
5.9 KiB
C++
142 lines
5.9 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) 2012 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/debug.hpp>
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#include <mapnik/formatting/expression.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/expression_evaluator.hpp>
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#include <mapnik/text_properties.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/xml_node.hpp>
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namespace mapnik {
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namespace formatting {
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using boost::property_tree::ptree;
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void expression_format::to_xml(boost::property_tree::ptree &xml) const
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{
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ptree &new_node = xml.push_back(ptree::value_type("ExpressionFormat", ptree()))->second;
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if (face_name) set_attr(new_node, "face-name", to_expression_string(*face_name));
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if (text_size) set_attr(new_node, "size", to_expression_string(*text_size));
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if (character_spacing) set_attr(new_node, "character-spacing", to_expression_string(*character_spacing));
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if (line_spacing) set_attr(new_node, "line-spacing", to_expression_string(*line_spacing));
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if (text_opacity) set_attr(new_node, "opacity", to_expression_string(*text_opacity));
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if (wrap_before) set_attr(new_node, "wrap-before", to_expression_string(*wrap_before));
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if (wrap_char) set_attr(new_node, "wrap-character", to_expression_string(*wrap_char));
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if (fill) set_attr(new_node, "fill", to_expression_string(*fill));
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if (halo_fill) set_attr(new_node, "halo-fill", to_expression_string(*halo_fill));
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if (halo_radius) set_attr(new_node, "halo-radius", to_expression_string(*halo_radius));
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if (child_) child_->to_xml(new_node);
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}
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node_ptr expression_format::from_xml(xml_node const& xml)
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{
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expression_format *n = new expression_format();
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node_ptr np(n);
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node_ptr child = node::from_xml(xml);
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n->set_child(child);
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n->face_name = get_expression(xml, "face-name");
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n->text_size = get_expression(xml, "size");
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n->character_spacing = get_expression(xml, "character-spacing");
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n->line_spacing = get_expression(xml, "line-spacing");
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n->text_opacity = get_expression(xml, "opactity");
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n->wrap_before = get_expression(xml, "wrap-before");
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n->wrap_char = get_expression(xml, "wrap-character");
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n->fill = get_expression(xml, "fill");
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n->halo_fill = get_expression(xml, "halo-fill");
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n->halo_radius = get_expression(xml, "halo-radius");
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return np;
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}
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expression_ptr expression_format::get_expression(xml_node const& xml, std::string name)
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{
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boost::optional<std::string> tmp = xml.get_opt_attr<std::string>(name);
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if (tmp) return parse_expression(*tmp);
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return expression_ptr();
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}
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void expression_format::apply(char_properties const& p, const Feature &feature, processed_text &output) const
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{
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char_properties new_properties = p;
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if (face_name) new_properties.face_name =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *face_name).to_string();
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if (text_size) new_properties.text_size =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *text_size).to_double();
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if (character_spacing) new_properties.character_spacing =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *character_spacing).to_double();
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if (line_spacing) new_properties.line_spacing =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *line_spacing).to_double();
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if (text_opacity) new_properties.text_opacity =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *text_opacity).to_double();
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if (wrap_before) new_properties.wrap_before =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *wrap_before).to_bool();
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if (wrap_char) new_properties.wrap_char =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *character_spacing).to_unicode()[0];
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// if (fill) new_properties.fill =
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// boost::apply_visitor(evaluate<Feature,value_type>(feature), *fill).to_color();
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// if (halo_fill) new_properties.halo_fill =
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// boost::apply_visitor(evaluate<Feature,value_type>(feature), *halo_fill).to_color();
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if (halo_radius) new_properties.halo_radius =
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boost::apply_visitor(evaluate<Feature,value_type>(feature), *halo_radius).to_double();
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if (child_) {
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child_->apply(new_properties, feature, output);
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} else {
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MAPNIK_LOG_WARN(expression) << "Useless format: No text to format";
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}
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}
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void expression_format::set_child(node_ptr child)
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{
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child_ = child;
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}
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node_ptr expression_format::get_child() const
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{
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return child_;
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}
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void expression_format::add_expressions(expression_set &output) const
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{
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if (child_) child_->add_expressions(output);
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output.insert(face_name);
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output.insert(text_size);
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output.insert(character_spacing);
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output.insert(line_spacing);
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output.insert(text_opacity);
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output.insert(wrap_before);
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output.insert(wrap_char);
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output.insert(fill);
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output.insert(halo_fill);
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output.insert(halo_radius);
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}
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} //ns formatting
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} //ns mapnik
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