88 lines
3.1 KiB
C++
88 lines
3.1 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) 2006 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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//$Id: symbolizer.hpp 39 2005-04-10 20:39:53Z pavlenko $
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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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/** Add a metawriter to this symbolizer.
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*
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* expression can be empty the default expression of
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* the writer is used in this case. */
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void add_metawriter(std::string const& name, metawriter_properties const& properties);
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/** Cache metawriter objects to avoid repeated lookups while processing.
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*
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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().
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*/
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void cache_metawriters(Map const &m);
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//TODO: Allow more than one meta writer per symbolizer?
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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 properties needed for metawriter.
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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_;}
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private:
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metawriter_properties properties_;
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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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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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