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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#if defined(HAVE_CAIRO)
#ifndef MAPNIK_CAIRO_RENDERER_HPP
#define MAPNIK_CAIRO_RENDERER_HPP
// mapnik
#include <mapnik/config.hpp>
#include <mapnik/feature_style_processor.hpp>
#include <mapnik/font_engine_freetype.hpp>
#include <mapnik/label_collision_detector.hpp>
#include <mapnik/map.hpp>
#include <mapnik/rule.hpp> // for all symbolizers
// cairo
#include <cairomm/context.h>
#include <cairomm/surface.h>
// boost
#include <boost/utility.hpp>
#include <boost/scoped_ptr.hpp>
// FIXME
// forward declare so that
// apps using mapnik do not
// need agg headers
namespace agg {
struct trans_affine;
}
namespace mapnik {
class marker;
class cairo_face;
typedef boost::shared_ptr<cairo_face> cairo_face_ptr;
class cairo_face_manager : private boost::noncopyable
{
public:
cairo_face_manager(boost::shared_ptr<freetype_engine> engine);
cairo_face_ptr get_face(face_ptr face);
private:
typedef std::map<face_ptr,cairo_face_ptr> cairo_face_cache;
boost::shared_ptr<freetype_engine> font_engine_;
cairo_face_cache cache_;
};
class MAPNIK_DECL cairo_renderer_base : private boost::noncopyable
{
protected:
cairo_renderer_base(Map const& m, Cairo::RefPtr<Cairo::Context> const& context, double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
cairo_renderer_base(Map const& m, Cairo::RefPtr<Cairo::Context> const& context, boost::shared_ptr<label_collision_detector4> detector, double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
public:
~cairo_renderer_base();
void start_map_processing(Map const& map);
void start_layer_processing(layer const& lay, box2d<double> const& query_extent);
void end_layer_processing(layer const& lay);
void start_style_processing(feature_type_style const& st);
void end_style_processing(feature_type_style const& st);
void process(point_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(line_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(line_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(polygon_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(polygon_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(raster_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(text_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(building_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
void process(markers_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans);
inline bool process(rule::symbolizers const& /*syms*/,
mapnik::feature_impl & /*feature*/,
proj_transform const& /*prj_trans*/)
{
// cairo renderer doesn't support processing of multiple symbolizers.
return false;
};
void painted(bool /*painted*/)
{
// nothing to do
}
void render_marker(pixel_position const& pos, marker const& marker, const agg::trans_affine & mtx, double opacity=1.0, bool recenter=true);
void render_box(box2d<double> const& b);
protected:
Map const& m_;
Cairo::RefPtr<Cairo::Context> context_;
unsigned width_;
unsigned height_;
double scale_factor_;
CoordTransform t_;
boost::shared_ptr<freetype_engine> font_engine_;
face_manager<freetype_engine> font_manager_;
cairo_face_manager face_manager_;
boost::shared_ptr<label_collision_detector4> detector_;
box2d<double> query_extent_;
};
template <typename T>
class MAPNIK_DECL cairo_renderer : public feature_style_processor<cairo_renderer<T> >,
public cairo_renderer_base
{
public:
typedef cairo_renderer_base processor_impl_type;
cairo_renderer(Map const& m, Cairo::RefPtr<T> const& surface, double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
cairo_renderer(Map const& m, Cairo::RefPtr<T> const& surface, boost::shared_ptr<label_collision_detector4> detector, double scale_factor=1.0, unsigned offset_x=0, unsigned offset_y=0);
void end_map_processing(Map const& map);
};
}
#endif // MAPNIK_CAIRO_RENDERER_HPP
#endif
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