Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

159 lines (139 sloc) 5.929 kb
/*****************************************************************************
*
* 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
Jump to Line
Something went wrong with that request. Please try again.