ab101401cd
+ removed multiple geometry typedefs + use geometry_type + revert to storing vertices in vector_vertex (previous implementation using std::vector was fragmenting heap causing performance issues with large geometries) + FIXME: hit_test is broken!
140 lines
4.8 KiB
C++
140 lines
4.8 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) 2010 Hermann Kraus
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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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#ifndef METAWRITER_HPP
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#define METAWRITER_HPP
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// Mapnik
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#include <mapnik/box2d.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/font_engine_freetype.hpp>
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// Boost
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#include <boost/utility.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/optional.hpp>
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#include <boost/concept_check.hpp>
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// STL
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#include <set>
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#include <string>
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namespace mapnik {
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struct placement;
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/** Implementation of std::map that also returns const& for operator[]. */
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class metawriter_property_map
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{
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public:
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metawriter_property_map() {}
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UnicodeString const& operator[](std::string const& key) const;
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UnicodeString& operator[](std::string const& key) {return m_[key];}
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private:
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std::map<std::string, UnicodeString> m_;
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UnicodeString not_found_;
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};
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/** All properties to be output by a metawriter. */
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class metawriter_properties : public std::set<std::string>
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{
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public:
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metawriter_properties(boost::optional<std::string> str);
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metawriter_properties() {};
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template <class InputIterator> metawriter_properties(
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InputIterator first, InputIterator last) : std::set<std::string>(first, last) {};
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std::string to_string() const;
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};
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/** Abstract baseclass for all metawriter classes. */
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class metawriter
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{
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public:
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typedef coord_transform2<CoordTransform,geometry_type> path_type;
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metawriter(metawriter_properties dflt_properties) : dflt_properties_(dflt_properties) {}
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virtual ~metawriter() {};
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/** Output a rectangular area.
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* \param box Area (in pixel coordinates)
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* \param feature The feature being processed
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* \param prj_trans Projection transformation
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* \param t Cooridnate transformation
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* \param properties List of properties to output
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*/
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virtual void add_box(box2d<double> const& box, Feature const& feature,
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CoordTransform const& t,
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metawriter_properties const& properties)=0;
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virtual void add_text(placement const& placement,
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face_set_ptr face,
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Feature const& feature,
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CoordTransform const& t,
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metawriter_properties const& properties)=0;
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virtual void add_polygon(path_type & path,
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Feature const& feature,
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CoordTransform const& t,
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metawriter_properties const& properties)=0;
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virtual void add_line(path_type & path,
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Feature const& feature,
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CoordTransform const& t,
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metawriter_properties const& properties)=0;
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/** Start processing.
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* Write file header, init database connection, ...
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*
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* \param properties metawriter_property_map object with userdefined values.
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* Useful for setting filename etc.
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*/
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virtual void start(metawriter_property_map const& properties)
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{
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boost::ignore_unused_variable_warning(properties);
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};
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/** Stop processing.
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* Write file footer, close database connection, ...
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*/
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virtual void stop() {};
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/** Set output size (pixels).
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* All features that are completely outside this size are discarded.
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*/
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void set_size(int width, int height) { width_ = width; height_ = height; }
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/** Set Map object's srs. */
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virtual void set_map_srs(projection const& proj) = 0;
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/** Return the list of default properties. */
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metawriter_properties const& get_default_properties() const { return dflt_properties_;}
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protected:
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metawriter_properties dflt_properties_;
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/** Output width (pixels). */
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int width_;
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/** Output height (pixels). */
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int height_;
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};
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/** Shared pointer to metawriter object. */
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typedef boost::shared_ptr<metawriter> metawriter_ptr;
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/** Metawriter object + properties. */
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typedef std::pair<metawriter_ptr, metawriter_properties> metawriter_with_properties;
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};
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#endif
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