150 lines
5.6 KiB
C++
150 lines
5.6 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_AGG_RENDERER_HPP
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#define MAPNIK_AGG_RENDERER_HPP
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// mapnik
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#include <mapnik/config.hpp>
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#include <mapnik/feature_style_processor.hpp>
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#include <mapnik/font_engine_freetype.hpp>
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#include <mapnik/label_collision_detector.hpp>
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#include <mapnik/map.hpp>
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#include <mapnik/pixel_position.hpp>
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#include <mapnik/rule.hpp> // for all symbolizers
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// boost
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#include <boost/utility.hpp>
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#include <boost/scoped_ptr.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/optional.hpp>
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// FIXME
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// forward declare so that
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// apps using mapnik do not
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// need agg headers
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namespace agg {
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struct trans_affine;
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}
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namespace mapnik {
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class marker;
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struct rasterizer;
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template <typename T>
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class MAPNIK_DECL agg_renderer : public feature_style_processor<agg_renderer<T> >,
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private boost::noncopyable
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{
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public:
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typedef T buffer_type;
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typedef agg_renderer<T> processor_impl_type;
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// create with default, empty placement detector
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agg_renderer(Map const& m, T & pixmap, double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
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// create with external placement detector, possibly non-empty
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agg_renderer(Map const &m, T & pixmap, boost::shared_ptr<label_collision_detector4> detector,
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double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
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~agg_renderer();
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void start_map_processing(Map const& map);
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void end_map_processing(Map const& map);
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void start_layer_processing(layer const& lay, box2d<double> const& query_extent);
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void end_layer_processing(layer const& lay);
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void start_style_processing(feature_type_style const& st);
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void end_style_processing(feature_type_style const& st);
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void render_marker(pixel_position const& pos, marker const& marker, agg::trans_affine const& tr,
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double opacity, composite_mode_e comp_op);
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void process(point_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(line_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(line_pattern_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(polygon_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(polygon_pattern_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(raster_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(shield_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(text_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(building_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(markers_symbolizer const& sym,
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mapnik::feature_impl & feature,
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proj_transform const& prj_trans);
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void process(debug_symbolizer const& sym,
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feature_impl & feature,
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proj_transform const& prj_trans);
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inline bool process(rule::symbolizers const& /*syms*/,
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mapnik::feature_impl & /*feature*/,
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proj_transform const& /*prj_trans*/)
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{
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// agg renderer doesn't support processing of multiple symbolizers.
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return false;
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};
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void painted(bool painted);
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protected:
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template <typename R>
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void debug_draw_box(R& buf, box2d<double> const& extent,
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double x, double y, double angle = 0.0);
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void debug_draw_box(box2d<double> const& extent,
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double x, double y, double angle = 0.0);
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void draw_geo_extent(box2d<double> const& extent,mapnik::color const& color);
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private:
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buffer_type & pixmap_;
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boost::shared_ptr<buffer_type> internal_buffer_;
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mutable buffer_type * current_buffer_;
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mutable bool style_level_compositing_;
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unsigned width_;
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unsigned height_;
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double scale_factor_;
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CoordTransform t_;
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freetype_engine font_engine_;
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face_manager<freetype_engine> font_manager_;
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boost::shared_ptr<label_collision_detector4> detector_;
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boost::scoped_ptr<rasterizer> ras_ptr;
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box2d<double> query_extent_;
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void setup(Map const &m);
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};
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}
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#endif // MAPNIK_AGG_RENDERER_HPP
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