107 lines
4.2 KiB
C++
107 lines
4.2 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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#ifndef MAPNIK_SYMBOLIZER_HPP
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#define MAPNIK_SYMBOLIZER_HPP
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// mapnik
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#include <mapnik/config.hpp>
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#include <mapnik/parse_path.hpp>
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#include <mapnik/metawriter.hpp>
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// boost
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#include <boost/array.hpp>
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namespace mapnik
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{
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class Map;
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class MAPNIK_DECL symbolizer_base {
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public:
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symbolizer_base():
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properties_(),
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properties_complete_(),
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writer_name_(),
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writer_ptr_() {}
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/** Add a metawriter to this symbolizer using a name. */
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void add_metawriter(std::string const& name, metawriter_properties const& properties);
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/** Add a metawriter to this symbolizer using a pointer.
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* The name is only needed if you intend to call save_map() some time.
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* You don't need to call cache_metawriters() when using this function.
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* Call this function with an NULL writer_ptr to remove a metawriter.
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*/
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void add_metawriter(metawriter_ptr writer_ptr,
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metawriter_properties const& properties = metawriter_properties(),
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std::string const& name = "");
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/** Cache metawriter objects to avoid repeated lookups while processing.
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*
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* If the metawriter was added using a symbolic name (instead of a pointer)
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* this function has to be called before the symbolizer is used, because
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* the map object is not available in renderer::apply() to resolve the reference.
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*/
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void cache_metawriters(Map const &m);
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/** Get the metawriter associated with this symbolizer or a NULL pointer if none exists.
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*
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* This functions requires that cache_metawriters() was called first.
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*/
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metawriter_with_properties get_metawriter() const;
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/** Get metawriter properties.
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* This functions returns the default attributes of the
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* metawriter + symbolizer specific attributes.
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* \note This function is a helperfunction for class attribute_collector.
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*/
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metawriter_properties const& get_metawriter_properties() const { return properties_complete_; }
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/** Get metawriter properties which only apply to this symbolizer.
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*/
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metawriter_properties const& get_metawriter_properties_overrides() const { return properties_; }
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/** Get metawriter name. */
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std::string const& get_metawriter_name() const { return writer_name_; }
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private:
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metawriter_properties properties_;
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metawriter_properties properties_complete_;
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std::string writer_name_;
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metawriter_ptr writer_ptr_;
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};
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typedef boost::array<double,6> transform_type;
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class MAPNIK_DECL symbolizer_with_image {
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public:
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path_expression_ptr get_filename() const;
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void set_filename(path_expression_ptr filename);
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void set_transform(transform_type const& );
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transform_type const& get_transform() const;
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std::string const get_transform_string() const;
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void set_opacity(float opacity);
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float get_opacity() const;
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protected:
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symbolizer_with_image(path_expression_ptr filename);
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symbolizer_with_image(symbolizer_with_image const& rhs);
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path_expression_ptr image_filename_;
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float opacity_;
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transform_type matrix_;
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};
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}
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#endif // MAPNIK_SYMBOLIZER_HPP
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