1492 lines
48 KiB
C++
1492 lines
48 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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#if defined(HAVE_CAIRO)
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// mapnik
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#include <mapnik/layer.hpp>
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#include <mapnik/feature_type_style.hpp>
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#include <mapnik/debug.hpp>
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#include <mapnik/cairo_renderer.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/unicode.hpp>
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#include <mapnik/markers_placement.hpp>
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#include <mapnik/parse_path.hpp>
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#include <mapnik/marker.hpp>
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#include <mapnik/marker_cache.hpp>
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#include <mapnik/segment.hpp>
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#include <mapnik/symbolizer_helpers.hpp>
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#include <mapnik/expression_evaluator.hpp>
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#include <mapnik/warp.hpp>
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#include <mapnik/config.hpp>
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#include <mapnik/vertex_converters.hpp>
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// cairo
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#include <cairomm/context.h>
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#include <cairomm/surface.h>
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#include <cairo-ft.h>
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#include <cairo-version.h>
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// boost
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#include <boost/utility.hpp>
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#include <boost/make_shared.hpp>
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// agg
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#include "agg_conv_clip_polyline.h"
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#include "agg_conv_clip_polygon.h"
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#include "agg_conv_smooth_poly1.h"
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// markers
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#include "agg_path_storage.h"
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#include "agg_ellipse.h"
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namespace mapnik
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{
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class cairo_pattern : private boost::noncopyable
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{
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public:
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cairo_pattern(image_data_32 const& data)
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{
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int pixels = data.width() * data.height();
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const unsigned int *in_ptr = data.getData();
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const unsigned int *in_end = in_ptr + pixels;
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unsigned int *out_ptr;
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surface_ = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, data.width(), data.height());
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out_ptr = reinterpret_cast<unsigned int *>(surface_->get_data());
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while (in_ptr < in_end)
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{
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unsigned int in = *in_ptr++;
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unsigned int r = (in >> 0) & 0xff;
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unsigned int g = (in >> 8) & 0xff;
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unsigned int b = (in >> 16) & 0xff;
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unsigned int a = (in >> 24) & 0xff;
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r = r * a / 255;
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g = g * a / 255;
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b = b * a / 255;
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*out_ptr++ = (a << 24) | (r << 16) | (g << 8) | b;
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}
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// mark the surface as dirty as we've modified it behind cairo's back
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surface_->mark_dirty();
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pattern_ = Cairo::SurfacePattern::create(surface_);
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}
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~cairo_pattern(void)
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{
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}
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void set_matrix(Cairo::Matrix const& matrix)
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{
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pattern_->set_matrix(matrix);
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}
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void set_origin(double x, double y)
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{
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Cairo::Matrix matrix;
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pattern_->get_matrix(matrix);
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matrix.x0 = -x;
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matrix.y0 = -y;
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pattern_->set_matrix(matrix);
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}
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void set_extend(Cairo::Extend extend)
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{
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pattern_->set_extend(extend);
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}
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void set_filter(Cairo::Filter filter)
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{
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pattern_->set_filter(filter);
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}
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Cairo::RefPtr<Cairo::SurfacePattern> const& pattern(void) const
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{
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return pattern_;
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}
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private:
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Cairo::RefPtr<Cairo::ImageSurface> surface_;
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Cairo::RefPtr<Cairo::SurfacePattern> pattern_;
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};
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class cairo_gradient : private boost::noncopyable
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{
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public:
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cairo_gradient(const mapnik::gradient &grad, double opacity=1.0)
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{
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double x1,x2,y1,y2,r;
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grad.get_control_points(x1,y1,x2,y2,r);
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if (grad.get_gradient_type() == LINEAR)
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{
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pattern_ = Cairo::LinearGradient::create(x1, y1, x2, y2);
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}
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else if (grad.get_gradient_type() == RADIAL)
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{
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pattern_ = Cairo::RadialGradient::create(x1, y1, 0, x2, y2, r);
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}
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units_ = grad.get_units();
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BOOST_FOREACH ( mapnik::stop_pair const& st, grad.get_stop_array() )
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{
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mapnik::color const& stop_color = st.second;
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double r= static_cast<double> (stop_color.red())/255.0;
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double g= static_cast<double> (stop_color.green())/255.0;
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double b= static_cast<double> (stop_color.blue())/255.0;
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double a= static_cast<double> (stop_color.alpha())/255.0;
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pattern_->add_color_stop_rgba(st.first, r, g, b, a*opacity);
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}
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double m[6];
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agg::trans_affine tr = grad.get_transform();
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tr.invert();
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tr.store_to(m);
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pattern_->set_matrix(Cairo::Matrix(m[0],m[1],m[2],m[3],m[4],m[5]));
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}
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~cairo_gradient(void)
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{
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}
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Cairo::RefPtr<Cairo::Gradient> const& gradient(void) const
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{
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return pattern_;
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}
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gradient_unit_e units() const
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{
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return units_;
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}
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private:
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Cairo::RefPtr<Cairo::Gradient> pattern_;
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gradient_unit_e units_;
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};
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class cairo_face : private boost::noncopyable
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{
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public:
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cairo_face(boost::shared_ptr<freetype_engine> const& engine, face_ptr const& face)
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: face_(face)
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{
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static cairo_user_data_key_t key;
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cairo_font_face_t *c_face;
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c_face = cairo_ft_font_face_create_for_ft_face(face->get_face(), FT_LOAD_NO_HINTING);
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cairo_font_face_set_user_data(c_face, &key, new handle(engine, face), destroy);
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cairo_face_ = Cairo::RefPtr<Cairo::FontFace>(new Cairo::FontFace(c_face));
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}
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Cairo::RefPtr<Cairo::FontFace> const& face(void) const
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{
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return cairo_face_;
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}
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private:
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class handle
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{
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public:
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handle(boost::shared_ptr<freetype_engine> const& engine, face_ptr const& face)
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: engine_(engine), face_(face) {}
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private:
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boost::shared_ptr<freetype_engine> engine_;
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face_ptr face_;
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};
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static void destroy(void *data)
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{
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handle *h = static_cast<handle *>(data);
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delete h;
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}
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private:
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face_ptr face_;
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Cairo::RefPtr<Cairo::FontFace> cairo_face_;
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};
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cairo_face_manager::cairo_face_manager(boost::shared_ptr<freetype_engine> engine)
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: font_engine_(engine)
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{
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}
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cairo_face_ptr cairo_face_manager::get_face(face_ptr face)
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{
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cairo_face_cache::iterator itr = cache_.find(face);
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cairo_face_ptr entry;
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if (itr != cache_.end())
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{
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entry = itr->second;
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}
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else
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{
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entry = boost::make_shared<cairo_face>(font_engine_, face);
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cache_.insert(std::make_pair(face, entry));
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}
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return entry;
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}
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class cairo_context : private boost::noncopyable
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{
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public:
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cairo_context(Cairo::RefPtr<Cairo::Context> const& context)
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: context_(context)
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{
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context_->save();
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}
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~cairo_context(void)
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{
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context_->restore();
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}
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void set_color(color const &color, double opacity = 1.0)
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{
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set_color(color.red(), color.green(), color.blue(), color.alpha() * opacity / 255.0);
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}
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void set_color(int r, int g, int b, double opacity = 1.0)
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{
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context_->set_source_rgba(r / 255.0, g / 255.0, b / 255.0, opacity);
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}
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void set_operator(composite_mode_e comp_op)
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{
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switch (comp_op)
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{
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case clear:
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context_->set_operator(Cairo::OPERATOR_CLEAR);
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break;
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case src:
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context_->set_operator(Cairo::OPERATOR_SOURCE);
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break;
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case dst:
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context_->set_operator(Cairo::OPERATOR_DEST);
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break;
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case src_over:
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context_->set_operator(Cairo::OPERATOR_OVER);
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break;
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case dst_over:
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context_->set_operator(Cairo::OPERATOR_DEST_OVER);
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break;
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case src_in:
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context_->set_operator(Cairo::OPERATOR_IN);
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break;
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case dst_in:
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context_->set_operator(Cairo::OPERATOR_DEST_IN);
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break;
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case src_out:
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context_->set_operator(Cairo::OPERATOR_OUT);
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break;
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case dst_out:
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context_->set_operator(Cairo::OPERATOR_DEST_OUT);
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break;
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case src_atop:
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context_->set_operator(Cairo::OPERATOR_ATOP);
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break;
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case dst_atop:
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context_->set_operator(Cairo::OPERATOR_DEST_ATOP);
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break;
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case _xor:
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context_->set_operator(Cairo::OPERATOR_XOR);
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break;
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case plus:
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context_->set_operator(Cairo::OPERATOR_ADD);
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break;
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#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 10, 0)
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case multiply:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_MULTIPLY));
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break;
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case screen:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_SCREEN));
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break;
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case overlay:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_OVERLAY));
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break;
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case darken:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_DARKEN));
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break;
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case lighten:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_LIGHTEN));
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break;
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case color_dodge:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_COLOR_DODGE));
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break;
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case color_burn:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_COLOR_BURN));
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break;
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case hard_light:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_HARD_LIGHT));
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break;
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case soft_light:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_SOFT_LIGHT));
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break;
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case difference:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_DIFFERENCE));
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break;
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case exclusion:
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context_->set_operator(static_cast<Cairo::Operator>(CAIRO_OPERATOR_EXCLUSION));
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break;
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#else
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#warning building against cairo older that 1.10.0, some compositing options are disabled
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case multiply:
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case screen:
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case overlay:
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case darken:
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case lighten:
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case color_dodge:
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case color_burn:
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case hard_light:
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case soft_light:
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case difference:
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case exclusion:
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break;
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#endif
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case contrast:
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case minus:
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case invert:
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case invert_rgb:
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case grain_merge:
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case grain_extract:
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case hue:
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case saturation:
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case _color:
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case _value:
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case colorize_alpha:
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break;
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}
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}
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void set_line_join(line_join_e join)
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{
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if (join == MITER_JOIN)
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context_->set_line_join(Cairo::LINE_JOIN_MITER);
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else if (join == MITER_REVERT_JOIN)
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context_->set_line_join(Cairo::LINE_JOIN_MITER);
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else if (join == ROUND_JOIN)
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context_->set_line_join(Cairo::LINE_JOIN_ROUND);
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else
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context_->set_line_join(Cairo::LINE_JOIN_BEVEL);
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}
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void set_line_cap(line_cap_e cap)
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{
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if (cap == BUTT_CAP)
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context_->set_line_cap(Cairo::LINE_CAP_BUTT);
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else if (cap == SQUARE_CAP)
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context_->set_line_cap(Cairo::LINE_CAP_SQUARE);
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else
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context_->set_line_cap(Cairo::LINE_CAP_ROUND);
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}
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void set_miter_limit(double limit)
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{
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context_->set_miter_limit(limit);
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}
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void set_line_width(double width)
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{
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context_->set_line_width(width);
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}
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void set_dash(dash_array const &dashes)
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{
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std::valarray<double> d(dashes.size() * 2);
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dash_array::const_iterator itr = dashes.begin();
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dash_array::const_iterator end = dashes.end();
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int index = 0;
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for (; itr != end; ++itr)
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{
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d[index++] = itr->first;
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d[index++] = itr->second;
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}
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context_->set_dash(d, 0.0);
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}
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void set_fill_rule(Cairo::FillRule fill_rule)
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{
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context_->set_fill_rule(fill_rule);
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}
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void move_to(double x, double y)
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{
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#if CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 6, 0)
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if (x < -32767.0) x = -32767.0;
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else if (x > 32767.0) x = 32767.0;
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if (y < -32767.0) y = -32767.0;
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else if (y > 32767.0) y = 32767.0;
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#endif
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context_->move_to(x, y);
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}
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void curve_to(double ct1_x, double ct1_y, double ct2_x, double ct2_y, double end_x, double end_y)
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{
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context_->curve_to(ct1_x,ct1_y,ct2_x,ct2_y,end_x,end_y);
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}
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void close_path()
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{
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context_->close_path();
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}
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void line_to(double x, double y)
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{
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#if CAIRO_VERSION < CAIRO_VERSION_ENCODE(1, 6, 0)
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if (x < -32767.0) x = -32767.0;
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else if (x > 32767.0) x = 32767.0;
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if (y < -32767.0) y = -32767.0;
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else if (y > 32767.0) y = 32767.0;
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#endif
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context_->line_to(x, y);
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}
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template <typename T>
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void add_path(T& path, unsigned start_index = 0)
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{
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double x, y;
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path.rewind(start_index);
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for (unsigned cm = path.vertex(&x, &y); cm != SEG_END; cm = path.vertex(&x, &y))
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{
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if (cm == SEG_MOVETO)
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{
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move_to(x, y);
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}
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else if (cm == SEG_LINETO)
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{
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line_to(x, y);
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}
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else if (cm == SEG_CLOSE)
|
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{
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close_path();
|
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}
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}
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}
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template <typename T>
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void add_agg_path(T& path, unsigned start_index = 0)
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{
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double x=0;
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double y=0;
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path.rewind(start_index);
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for (unsigned cm = path.vertex(&x, &y); !agg::is_stop(cm); cm = path.vertex(&x, &y))
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{
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if (agg::is_move_to(cm))
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{
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move_to(x, y);
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}
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else if (agg::is_drawing(cm))
|
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{
|
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if (agg::is_curve3(cm))
|
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{
|
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double end_x=0;
|
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double end_y=0;
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MAPNIK_LOG_WARN(cairo_renderer) << "Curve 3 not implemented";
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path.vertex(&end_x, &end_y);
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curve_to(x,y,x,y,end_x,end_y);
|
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}
|
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else if (agg::is_curve4(cm))
|
|
{
|
|
double ct2_x=0;
|
|
double ct2_y=0;
|
|
double end_x=0;
|
|
double end_y=0;
|
|
|
|
path.vertex(&ct2_x, &ct2_y);
|
|
path.vertex(&end_x, &end_y);
|
|
|
|
curve_to(x,y,ct2_x,ct2_y,end_x,end_y);
|
|
}
|
|
else if (agg::is_line_to(cm))
|
|
{
|
|
line_to(x, y);
|
|
}
|
|
else
|
|
{
|
|
MAPNIK_LOG_WARN(cairo_renderer) << "Unimplemented drawing command: " << cm;
|
|
move_to(x, y);
|
|
}
|
|
}
|
|
else if (agg::is_close(cm))
|
|
{
|
|
close_path();
|
|
}
|
|
else
|
|
{
|
|
MAPNIK_LOG_WARN(cairo_renderer) << "Unimplemented path command: " << cm;
|
|
}
|
|
}
|
|
}
|
|
|
|
void rectangle(double x, double y, double w, double h)
|
|
{
|
|
context_->rectangle(x, y, w, h);
|
|
}
|
|
|
|
void stroke(void)
|
|
{
|
|
context_->stroke();
|
|
}
|
|
|
|
void fill(void)
|
|
{
|
|
context_->fill();
|
|
}
|
|
|
|
void paint(void)
|
|
{
|
|
context_->paint();
|
|
}
|
|
|
|
void set_pattern(cairo_pattern const& pattern)
|
|
{
|
|
context_->set_source(pattern.pattern());
|
|
}
|
|
|
|
void set_gradient(cairo_gradient const& pattern, const box2d<double> &bbox)
|
|
{
|
|
Cairo::RefPtr<Cairo::Gradient> p = pattern.gradient();
|
|
|
|
double bx1=bbox.minx();
|
|
double by1=bbox.miny();
|
|
double bx2=bbox.maxx();
|
|
double by2=bbox.maxy();
|
|
if (pattern.units() != USER_SPACE_ON_USE)
|
|
{
|
|
if (pattern.units() == OBJECT_BOUNDING_BOX)
|
|
{
|
|
context_->get_path_extents (bx1, by1, bx2, by2);
|
|
}
|
|
Cairo::Matrix m = p->get_matrix();
|
|
m.scale(1.0/(bx2-bx1),1.0/(by2-by1));
|
|
m.translate(-bx1,-by1);
|
|
p->set_matrix(m);
|
|
}
|
|
|
|
context_->set_source(p);
|
|
}
|
|
|
|
void add_image(double x, double y, image_data_32 & data, double opacity = 1.0)
|
|
{
|
|
cairo_pattern pattern(data);
|
|
|
|
pattern.set_origin(x, y);
|
|
|
|
context_->save();
|
|
context_->set_source(pattern.pattern());
|
|
context_->paint_with_alpha(opacity);
|
|
context_->restore();
|
|
}
|
|
|
|
void set_font_face(cairo_face_manager & manager, face_ptr face)
|
|
{
|
|
context_->set_font_face(manager.get_face(face)->face());
|
|
}
|
|
|
|
void set_font_matrix(Cairo::Matrix const& matrix)
|
|
{
|
|
context_->set_font_matrix(matrix);
|
|
}
|
|
|
|
void set_matrix(Cairo::Matrix const& matrix)
|
|
{
|
|
context_->set_matrix(matrix);
|
|
}
|
|
|
|
void transform(Cairo::Matrix const& matrix)
|
|
{
|
|
context_->transform(matrix);
|
|
}
|
|
|
|
void translate(double x, double y)
|
|
{
|
|
context_->translate(x,y);
|
|
}
|
|
|
|
void save()
|
|
{
|
|
context_->save();
|
|
}
|
|
|
|
void restore()
|
|
{
|
|
context_->restore();
|
|
}
|
|
|
|
void show_glyph(unsigned long index, pixel_position const& pos)
|
|
{
|
|
Cairo::Glyph glyph;
|
|
|
|
glyph.index = index;
|
|
glyph.x = pos.x;
|
|
glyph.y = pos.y;
|
|
|
|
std::vector<Cairo::Glyph> glyphs;
|
|
|
|
glyphs.push_back(glyph);
|
|
|
|
context_->show_glyphs(glyphs);
|
|
}
|
|
|
|
void glyph_path(unsigned long index, pixel_position pos)
|
|
{
|
|
Cairo::Glyph glyph;
|
|
|
|
glyph.index = index;
|
|
glyph.x = pos.x;
|
|
glyph.y = pos.y;
|
|
|
|
std::vector<Cairo::Glyph> glyphs;
|
|
|
|
glyphs.push_back(glyph);
|
|
|
|
context_->glyph_path(glyphs);
|
|
}
|
|
|
|
void add_text(glyph_positions_ptr pos,
|
|
cairo_face_manager & manager,
|
|
face_manager<freetype_engine> &font_manager,
|
|
double scale_factor)
|
|
{
|
|
pixel_position const& base = pos->get_base_point();
|
|
|
|
glyph_positions::const_iterator itr = pos->begin(), end = pos->end();
|
|
for (; itr != end; itr++)
|
|
{
|
|
glyph_info const& glyph = *(itr->glyph);
|
|
double text_size = glyph.format->text_size * scale_factor;
|
|
glyph.face->set_character_sizes(text_size);
|
|
|
|
Cairo::Matrix matrix;
|
|
double sina = sin(itr->angle);
|
|
double cosa = cos(itr->angle);
|
|
matrix.xx = text_size * cosa;
|
|
matrix.xy = text_size * sina;
|
|
matrix.yx = text_size * -sina;
|
|
matrix.yy = text_size * cosa;
|
|
matrix.x0 = 0;
|
|
matrix.y0 = 0;
|
|
|
|
set_font_matrix(matrix);
|
|
set_font_face(manager, glyph.face);
|
|
|
|
glyph_path(glyph.glyph_index, base + itr->pos);
|
|
set_line_width(glyph.format->halo_radius * scale_factor);
|
|
set_line_join(ROUND_JOIN);
|
|
set_color(glyph.format->halo_fill);
|
|
stroke();
|
|
set_color(glyph.format->fill);
|
|
show_glyph(glyph.glyph_index, base + itr->pos);
|
|
}
|
|
}
|
|
|
|
|
|
private:
|
|
Cairo::RefPtr<Cairo::Context> context_;
|
|
};
|
|
|
|
cairo_renderer_base::cairo_renderer_base(Map const& m,
|
|
Cairo::RefPtr<Cairo::Context> const& context,
|
|
double scale_factor,
|
|
unsigned offset_x,
|
|
unsigned offset_y)
|
|
: m_(m),
|
|
context_(context),
|
|
width_(m.width()),
|
|
height_(m.height()),
|
|
scale_factor_(scale_factor),
|
|
t_(m.width(),m.height(),m.get_current_extent(),offset_x,offset_y),
|
|
font_engine_(boost::make_shared<freetype_engine>()),
|
|
font_manager_(*font_engine_),
|
|
face_manager_(font_engine_),
|
|
detector_(box2d<double>(-m.buffer_size() ,-m.buffer_size() , m.width() + m.buffer_size() ,m.height() + m.buffer_size()))
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Scale=" << m.scale();
|
|
}
|
|
|
|
template <>
|
|
cairo_renderer<Cairo::Context>::cairo_renderer(Map const& m, Cairo::RefPtr<Cairo::Context> const& context, double scale_factor, unsigned offset_x, unsigned offset_y)
|
|
: feature_style_processor<cairo_renderer>(m,scale_factor),
|
|
cairo_renderer_base(m,context,scale_factor,offset_x,offset_y) {}
|
|
|
|
template <>
|
|
cairo_renderer<Cairo::Surface>::cairo_renderer(Map const& m, Cairo::RefPtr<Cairo::Surface> const& surface, double scale_factor, unsigned offset_x, unsigned offset_y)
|
|
: feature_style_processor<cairo_renderer>(m,scale_factor),
|
|
cairo_renderer_base(m,Cairo::Context::create(surface),scale_factor,offset_x,offset_y) {}
|
|
|
|
cairo_renderer_base::~cairo_renderer_base() {}
|
|
|
|
void cairo_renderer_base::start_map_processing(Map const& map)
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Start map processing bbox=" << map.get_current_extent();
|
|
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
|
|
box2d<double> bounds = t_.forward(t_.extent());
|
|
context_->rectangle(bounds.minx(), bounds.miny(), bounds.maxx(), bounds.maxy());
|
|
context_->clip();
|
|
#else
|
|
#warning building against cairo older that 1.6.0, map clipping is disabled
|
|
#endif
|
|
|
|
boost::optional<color> bg = m_.background();
|
|
if (bg)
|
|
{
|
|
cairo_context context(context_);
|
|
context.set_color(*bg);
|
|
context.paint();
|
|
}
|
|
}
|
|
|
|
template <>
|
|
void cairo_renderer<Cairo::Context>::end_map_processing(Map const& )
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: End map processing";
|
|
}
|
|
|
|
template <>
|
|
void cairo_renderer<Cairo::Surface>::end_map_processing(Map const& )
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: End map processing";
|
|
|
|
context_->show_page();
|
|
}
|
|
|
|
void cairo_renderer_base::start_layer_processing(layer const& lay, box2d<double> const& query_extent)
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: Start processing layer=" << lay.name() ;
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: -- datasource=" << lay.datasource().get();
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: -- query_extent=" << query_extent;
|
|
|
|
if (lay.clear_label_cache())
|
|
{
|
|
detector_.clear();
|
|
}
|
|
query_extent_ = query_extent;
|
|
}
|
|
|
|
void cairo_renderer_base::end_layer_processing(layer const&)
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: End layer processing";
|
|
}
|
|
|
|
void cairo_renderer_base::start_style_processing(feature_type_style const& st)
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer:start style processing";
|
|
}
|
|
|
|
void cairo_renderer_base::end_style_processing(feature_type_style const& st)
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer:end style processing";
|
|
}
|
|
|
|
void cairo_renderer_base::process(polygon_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
context.set_color(sym.get_fill(), sym.get_opacity());
|
|
|
|
agg::trans_affine tr;
|
|
evaluate_transform(tr, feature, sym.get_transform());
|
|
|
|
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,smooth_tag> conv_types;
|
|
vertex_converter<box2d<double>, cairo_context, polygon_symbolizer,
|
|
CoordTransform, proj_transform, agg::trans_affine, conv_types>
|
|
converter(query_extent_,context,sym,t_,prj_trans,tr,1.0);
|
|
|
|
if (sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
|
|
converter.set<transform_tag>(); //always transform
|
|
converter.set<affine_transform_tag>();
|
|
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
|
|
|
|
BOOST_FOREACH( geometry_type & geom, feature.paths())
|
|
{
|
|
if (geom.size() > 2)
|
|
{
|
|
converter.apply(geom);
|
|
}
|
|
}
|
|
// fill polygon
|
|
context.fill();
|
|
}
|
|
|
|
void cairo_renderer_base::process(building_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef coord_transform<CoordTransform,geometry_type> path_type;
|
|
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
color const& fill = sym.get_fill();
|
|
double height = 0.0;
|
|
expression_ptr height_expr = sym.height();
|
|
if (height_expr)
|
|
{
|
|
value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr);
|
|
height = result.to_double() * scale_factor_;
|
|
}
|
|
|
|
for (unsigned i = 0; i < feature.num_geometries(); ++i)
|
|
{
|
|
geometry_type const& geom = feature.get_geometry(i);
|
|
|
|
if (geom.size() > 2)
|
|
{
|
|
boost::scoped_ptr<geometry_type> frame(new geometry_type(LineString));
|
|
boost::scoped_ptr<geometry_type> roof(new geometry_type(Polygon));
|
|
std::deque<segment_t> face_segments;
|
|
double x0 = 0;
|
|
double y0 = 0;
|
|
double x, y;
|
|
geom.rewind(0);
|
|
for (unsigned cm = geom.vertex(&x, &y); cm != SEG_END;
|
|
cm = geom.vertex(&x, &y))
|
|
{
|
|
if (cm == SEG_MOVETO)
|
|
{
|
|
frame->move_to(x,y);
|
|
}
|
|
else if (cm == SEG_LINETO || cm == SEG_CLOSE)
|
|
{
|
|
frame->line_to(x,y);
|
|
face_segments.push_back(segment_t(x0,y0,x,y));
|
|
}
|
|
x0 = x;
|
|
y0 = y;
|
|
}
|
|
|
|
std::sort(face_segments.begin(), face_segments.end(), y_order);
|
|
std::deque<segment_t>::const_iterator itr = face_segments.begin();
|
|
std::deque<segment_t>::const_iterator end=face_segments.end();
|
|
for (; itr != end; ++itr)
|
|
{
|
|
boost::scoped_ptr<geometry_type> faces(new geometry_type(Polygon));
|
|
faces->move_to(itr->get<0>(), itr->get<1>());
|
|
faces->line_to(itr->get<2>(), itr->get<3>());
|
|
faces->line_to(itr->get<2>(), itr->get<3>() + height);
|
|
faces->line_to(itr->get<0>(), itr->get<1>() + height);
|
|
|
|
path_type faces_path(t_, *faces, prj_trans);
|
|
context.set_color(int(fill.red() * 0.8), int(fill.green() * 0.8),
|
|
int(fill.blue() * 0.8), fill.alpha() * sym.get_opacity() / 255.0);
|
|
context.add_path(faces_path);
|
|
context.fill();
|
|
|
|
frame->move_to(itr->get<0>(), itr->get<1>());
|
|
frame->line_to(itr->get<0>(), itr->get<1>() + height);
|
|
}
|
|
|
|
geom.rewind(0);
|
|
for (unsigned cm = geom.vertex(&x, &y); cm != SEG_END;
|
|
cm = geom.vertex(&x, &y))
|
|
{
|
|
if (cm == SEG_MOVETO)
|
|
{
|
|
frame->move_to(x,y+height);
|
|
roof->move_to(x,y+height);
|
|
}
|
|
else if (cm == SEG_LINETO || cm == SEG_CLOSE)
|
|
{
|
|
frame->line_to(x,y+height);
|
|
roof->line_to(x,y+height);
|
|
}
|
|
}
|
|
|
|
path_type path(t_, *frame, prj_trans);
|
|
context.set_color(fill.red()*0.8, fill.green()*0.8, fill.blue()*0.8, fill.alpha() * sym.get_opacity() / 255.0);
|
|
context.add_path(path);
|
|
context.stroke();
|
|
|
|
path_type roof_path(t_, *roof, prj_trans);
|
|
context.set_color(fill, sym.get_opacity());
|
|
context.add_path(roof_path);
|
|
context.fill();
|
|
}
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(line_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
cairo_context context(context_);
|
|
mapnik::stroke const& stroke_ = sym.get_stroke();
|
|
context.set_operator(sym.comp_op());
|
|
|
|
context.set_color(stroke_.get_color(), stroke_.get_opacity());
|
|
context.set_line_join(stroke_.get_line_join());
|
|
context.set_line_cap(stroke_.get_line_cap());
|
|
context.set_miter_limit(stroke_.get_miterlimit());
|
|
context.set_line_width(stroke_.get_width() * scale_factor_);
|
|
if (stroke_.has_dash())
|
|
{
|
|
context.set_dash(stroke_.get_dash_array());
|
|
}
|
|
|
|
agg::trans_affine tr;
|
|
evaluate_transform(tr, feature, sym.get_transform());
|
|
|
|
box2d<double> ext = query_extent_ * 1.1;
|
|
typedef boost::mpl::vector<clip_line_tag, clip_poly_tag, transform_tag, offset_transform_tag, affine_transform_tag, smooth_tag> conv_types;
|
|
vertex_converter<box2d<double>, cairo_context, line_symbolizer,
|
|
CoordTransform, proj_transform, agg::trans_affine, conv_types>
|
|
converter(ext,context,sym,t_,prj_trans,tr,scale_factor_);
|
|
|
|
if (sym.clip() && feature.paths().size() > 0) // optional clip (default: true)
|
|
{
|
|
eGeomType type = feature.paths()[0].type();
|
|
if (type == Polygon)
|
|
converter.set<clip_poly_tag>();
|
|
else if (type == LineString)
|
|
converter.set<clip_line_tag>();
|
|
// don't clip if type==Point
|
|
}
|
|
converter.set<transform_tag>(); // always transform
|
|
if (fabs(sym.offset()) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
|
|
converter.set<affine_transform_tag>(); // optional affine transform
|
|
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
|
|
|
|
BOOST_FOREACH( geometry_type & geom, feature.paths())
|
|
{
|
|
if (geom.size() > 1)
|
|
{
|
|
converter.apply(geom);
|
|
}
|
|
}
|
|
// stroke
|
|
context.stroke();
|
|
}
|
|
|
|
void cairo_renderer_base::render_marker(pixel_position const& pos, marker const& marker, const agg::trans_affine & tr, double opacity, bool recenter)
|
|
|
|
{
|
|
cairo_context context(context_);
|
|
|
|
if (marker.is_vector())
|
|
{
|
|
box2d<double> bbox;
|
|
bbox = (*marker.get_vector_data())->bounding_box();
|
|
|
|
agg::trans_affine mtx = tr;
|
|
|
|
if (recenter)
|
|
{
|
|
coord<double,2> c = bbox.center();
|
|
// center the svg marker on '0,0'
|
|
mtx = agg::trans_affine_translation(-c.x,-c.y);
|
|
// apply symbol transformation to get to map space
|
|
mtx *= tr;
|
|
// render the marker at the center of the marker box
|
|
mtx.translate(pos.x+0.5 * marker.width(), pos.y+0.5 * marker.height());
|
|
}
|
|
|
|
typedef coord_transform<CoordTransform,geometry_type> path_type;
|
|
agg::trans_affine transform;
|
|
mapnik::svg_path_ptr vmarker = *marker.get_vector_data();
|
|
using namespace mapnik::svg;
|
|
agg::pod_bvector<path_attributes> const & attributes_ = vmarker->attributes();
|
|
for(unsigned i = 0; i < attributes_.size(); ++i)
|
|
{
|
|
mapnik::svg::path_attributes const& attr = attributes_[i];
|
|
if (!attr.visibility_flag)
|
|
continue;
|
|
|
|
context.save();
|
|
|
|
transform = attr.transform;
|
|
transform *= mtx;
|
|
|
|
// TODO - this 'is_valid' check is not used in the AGG renderer and also
|
|
// appears to lead to bogus results with
|
|
// tests/data/good_maps/markers_symbolizer_lines_file.xml
|
|
if (/*transform.is_valid() && */ !transform.is_identity())
|
|
{
|
|
double m[6];
|
|
transform.store_to(m);
|
|
context.transform(Cairo::Matrix(m[0],m[1],m[2],m[3],m[4],m[5]));
|
|
}
|
|
|
|
vertex_stl_adapter<svg_path_storage> stl_storage(vmarker->source());
|
|
svg_path_adapter svg_path(stl_storage);
|
|
|
|
if (attr.fill_flag || attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
|
|
{
|
|
context.add_agg_path(svg_path,attr.index);
|
|
if (attr.even_odd_flag)
|
|
{
|
|
context.set_fill_rule(Cairo::FILL_RULE_EVEN_ODD);
|
|
}
|
|
else
|
|
{
|
|
context.set_fill_rule(Cairo::FILL_RULE_WINDING);
|
|
}
|
|
if(attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
|
|
{
|
|
cairo_gradient g(attr.fill_gradient,attr.fill_opacity*opacity);
|
|
|
|
context.set_gradient(g,bbox);
|
|
context.fill();
|
|
}
|
|
else if(attr.fill_flag)
|
|
{
|
|
double fill_opacity = attr.fill_opacity * opacity * attr.fill_color.opacity();
|
|
context.set_color(attr.fill_color.r,attr.fill_color.g,attr.fill_color.b, fill_opacity);
|
|
context.fill();
|
|
}
|
|
}
|
|
|
|
if (attr.stroke_gradient.get_gradient_type() != NO_GRADIENT || attr.stroke_flag)
|
|
{
|
|
context.add_agg_path(svg_path,attr.index);
|
|
if(attr.stroke_gradient.get_gradient_type() != NO_GRADIENT)
|
|
{
|
|
context.set_line_width(attr.stroke_width);
|
|
context.set_line_cap(line_cap_enum(attr.line_cap));
|
|
context.set_line_join(line_join_enum(attr.line_join));
|
|
context.set_miter_limit(attr.miter_limit);
|
|
cairo_gradient g(attr.stroke_gradient,attr.fill_opacity*opacity);
|
|
context.set_gradient(g,bbox);
|
|
context.stroke();
|
|
}
|
|
else if (attr.stroke_flag)
|
|
{
|
|
double stroke_opacity = attr.stroke_opacity * opacity * attr.stroke_color.opacity();
|
|
context.set_color(attr.stroke_color.r,attr.stroke_color.g,attr.stroke_color.b, stroke_opacity);
|
|
context.set_line_width(attr.stroke_width);
|
|
context.set_line_cap(line_cap_enum(attr.line_cap));
|
|
context.set_line_join(line_join_enum(attr.line_join));
|
|
context.set_miter_limit(attr.miter_limit);
|
|
context.stroke();
|
|
}
|
|
}
|
|
|
|
context.restore();
|
|
}
|
|
}
|
|
else if (marker.is_bitmap())
|
|
{
|
|
context.add_image(pos.x, pos.y, **marker.get_bitmap_data(), opacity);
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(point_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
|
|
boost::optional<marker_ptr> marker;
|
|
if ( !filename.empty() )
|
|
{
|
|
marker = marker_cache::instance()->find(filename, true);
|
|
}
|
|
else
|
|
{
|
|
marker.reset(boost::make_shared<mapnik::marker>());
|
|
}
|
|
|
|
agg::trans_affine mtx;
|
|
evaluate_transform(mtx, feature, sym.get_image_transform());
|
|
|
|
if (marker)
|
|
{
|
|
for (unsigned i = 0; i < feature.num_geometries(); ++i)
|
|
{
|
|
geometry_type const& geom = feature.get_geometry(i);
|
|
double x;
|
|
double y;
|
|
double z = 0;
|
|
|
|
if (sym.get_point_placement() == CENTROID_POINT_PLACEMENT)
|
|
label::centroid(geom, x, y);
|
|
else
|
|
label::interior_position(geom, x, y);
|
|
|
|
prj_trans.backward(x, y, z);
|
|
t_.forward(&x, &y);
|
|
|
|
int w = (*marker)->width();
|
|
int h = (*marker)->height();
|
|
|
|
int px = int(floor(x - 0.5 * w));
|
|
int py = int(floor(y - 0.5 * h));
|
|
box2d<double> label_ext (px, py, px + w, py + h);
|
|
if (sym.get_allow_overlap() ||
|
|
detector_.has_placement(label_ext))
|
|
{
|
|
render_marker(pixel_position(px,py),**marker, mtx, sym.get_opacity());
|
|
|
|
if (!sym.get_ignore_placement())
|
|
detector_.insert(label_ext);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(shield_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
#if 0
|
|
shield_symbolizer_helper<face_manager<freetype_engine>,
|
|
label_collision_detector4> helper(
|
|
sym, feature, prj_trans,
|
|
width_, height_,
|
|
scale_factor_,
|
|
t_, font_manager_, detector_, query_extent_);
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
|
|
while (helper.next())
|
|
{
|
|
placements_type const& placements = helper.placements();
|
|
for (unsigned int ii = 0; ii < placements.size(); ++ii)
|
|
{
|
|
pixel_position marker_pos = helper.get_marker_position(placements[ii]);
|
|
render_marker(marker_pos,
|
|
helper.get_marker(), helper.get_image_transform(),
|
|
sym.get_opacity());
|
|
context.add_text(placements[ii], face_manager_, font_manager_, scale_factor_);
|
|
}
|
|
}
|
|
#else
|
|
#warning CAIRO: ShieldSymbolizer disabled!
|
|
#endif
|
|
}
|
|
|
|
void cairo_renderer_base::process(line_pattern_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
typedef agg::conv_clip_polyline<geometry_type> clipped_geometry_type;
|
|
typedef coord_transform<CoordTransform,clipped_geometry_type> path_type;
|
|
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
boost::optional<mapnik::marker_ptr> marker = mapnik::marker_cache::instance()->find(filename,true);
|
|
if (!marker && !(*marker)->is_bitmap()) return;
|
|
|
|
unsigned width((*marker)->width());
|
|
unsigned height((*marker)->height());
|
|
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
cairo_pattern pattern(**((*marker)->get_bitmap_data()));
|
|
|
|
pattern.set_extend(Cairo::EXTEND_REPEAT);
|
|
pattern.set_filter(Cairo::FILTER_BILINEAR);
|
|
context.set_line_width(height * scale_factor_);
|
|
|
|
for (unsigned i = 0; i < feature.num_geometries(); ++i)
|
|
{
|
|
geometry_type & geom = feature.get_geometry(i);
|
|
|
|
if (geom.size() > 1)
|
|
{
|
|
clipped_geometry_type clipped(geom);
|
|
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
|
|
path_type path(t_,clipped,prj_trans);
|
|
|
|
double length(0);
|
|
double x0(0), y0(0);
|
|
double x, y;
|
|
|
|
for (unsigned cm = path.vertex(&x, &y); cm != SEG_END; cm = path.vertex(&x, &y))
|
|
{
|
|
if (cm == SEG_MOVETO)
|
|
{
|
|
length = 0.0;
|
|
}
|
|
else if (cm == SEG_LINETO)
|
|
{
|
|
double dx = x - x0;
|
|
double dy = y - y0;
|
|
double angle = atan2(dy, dx);
|
|
double offset = fmod(length, width);
|
|
|
|
Cairo::Matrix matrix;
|
|
cairo_matrix_init_identity(&matrix);
|
|
cairo_matrix_translate(&matrix,x0,y0);
|
|
cairo_matrix_rotate(&matrix,angle);
|
|
cairo_matrix_translate(&matrix,-offset,0.5*height);
|
|
cairo_matrix_invert(&matrix);
|
|
|
|
pattern.set_matrix(matrix);
|
|
|
|
context.set_pattern(pattern);
|
|
|
|
context.move_to(x0, y0);
|
|
context.line_to(x, y);
|
|
context.stroke();
|
|
|
|
length = length + hypot(x - x0, y - y0);
|
|
}
|
|
|
|
x0 = x;
|
|
y0 = y;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(polygon_pattern_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
|
|
std::string filename = path_processor_type::evaluate( *sym.get_filename(), feature);
|
|
boost::optional<mapnik::marker_ptr> marker = mapnik::marker_cache::instance()->find(filename,true);
|
|
if (!marker && !(*marker)->is_bitmap()) return;
|
|
|
|
cairo_pattern pattern(**((*marker)->get_bitmap_data()));
|
|
|
|
pattern.set_extend(Cairo::EXTEND_REPEAT);
|
|
|
|
context.set_pattern(pattern);
|
|
|
|
agg::trans_affine tr;
|
|
evaluate_transform(tr, feature, sym.get_transform());
|
|
|
|
typedef boost::mpl::vector<clip_poly_tag,transform_tag,affine_transform_tag,smooth_tag> conv_types;
|
|
vertex_converter<box2d<double>, cairo_context, polygon_pattern_symbolizer,
|
|
CoordTransform, proj_transform, agg::trans_affine, conv_types>
|
|
converter(query_extent_,context,sym,t_,prj_trans,tr,1.0);
|
|
|
|
if (sym.clip()) converter.set<clip_poly_tag>(); //optional clip (default: true)
|
|
converter.set<transform_tag>(); //always transform
|
|
converter.set<affine_transform_tag>();
|
|
if (sym.smooth() > 0.0) converter.set<smooth_tag>(); // optional smooth converter
|
|
|
|
BOOST_FOREACH( geometry_type & geom, feature.paths())
|
|
{
|
|
if (geom.size() > 2)
|
|
{
|
|
converter.apply(geom);
|
|
}
|
|
}
|
|
|
|
// fill polygon
|
|
context.fill();
|
|
}
|
|
|
|
void cairo_renderer_base::process(raster_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
raster_ptr const& source = feature.get_raster();
|
|
if (source)
|
|
{
|
|
// If there's a colorizer defined, use it to color the raster in-place
|
|
raster_colorizer_ptr colorizer = sym.get_colorizer();
|
|
if (colorizer)
|
|
colorizer->colorize(source,feature);
|
|
|
|
box2d<double> target_ext = box2d<double>(source->ext_);
|
|
prj_trans.backward(target_ext, PROJ_ENVELOPE_POINTS);
|
|
box2d<double> ext = t_.forward(target_ext);
|
|
int start_x = static_cast<int>(ext.minx());
|
|
int start_y = static_cast<int>(ext.miny());
|
|
int end_x = static_cast<int>(ceil(ext.maxx()));
|
|
int end_y = static_cast<int>(ceil(ext.maxy()));
|
|
int raster_width = end_x - start_x;
|
|
int raster_height = end_y - start_y;
|
|
if (raster_width > 0 && raster_height > 0)
|
|
{
|
|
image_data_32 target_data(raster_width,raster_height);
|
|
raster target(target_ext, target_data);
|
|
scaling_method_e scaling_method = sym.get_scaling_method();
|
|
double filter_radius = sym.calculate_filter_factor();
|
|
double offset_x = ext.minx() - start_x;
|
|
double offset_y = ext.miny() - start_y;
|
|
if (!prj_trans.equal())
|
|
{
|
|
reproject_and_scale_raster(target, *source, prj_trans,
|
|
offset_x, offset_y,
|
|
sym.get_mesh_size(),
|
|
filter_radius,
|
|
scaling_method);
|
|
}
|
|
else
|
|
{
|
|
if (scaling_method == SCALING_BILINEAR8){
|
|
scale_image_bilinear8<image_data_32>(target.data_,source->data_, offset_x, offset_y);
|
|
} else {
|
|
double scaling_ratio = ext.width() / source->data_.width();
|
|
scale_image_agg<image_data_32>(target.data_,
|
|
source->data_,
|
|
scaling_method,
|
|
scaling_ratio,
|
|
offset_x,
|
|
offset_y,
|
|
filter_radius);
|
|
}
|
|
}
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
context.add_image(start_x, start_y, target.data_, sym.get_opacity());
|
|
}
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(markers_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
//double scale_factor_ = 1;
|
|
|
|
typedef agg::conv_clip_polyline<geometry_type> clipped_geometry_type;
|
|
typedef coord_transform<CoordTransform,clipped_geometry_type> path_type;
|
|
|
|
agg::trans_affine tr;
|
|
evaluate_transform(tr, feature, sym.get_image_transform());
|
|
|
|
tr = agg::trans_affine_scaling(scale_factor_) * tr;
|
|
std::string filename = path_processor_type::evaluate(*sym.get_filename(), feature);
|
|
marker_placement_e placement_method = sym.get_marker_placement();
|
|
|
|
if (!filename.empty())
|
|
{
|
|
boost::optional<marker_ptr> mark = mapnik::marker_cache::instance()->find(filename, true);
|
|
if (mark && *mark)
|
|
{
|
|
if (!(*mark)->is_vector())
|
|
{
|
|
MAPNIK_LOG_DEBUG(cairo_renderer) << "cairo_renderer_base: markers_symbolizer does not yet support non-SVG markers";
|
|
|
|
return;
|
|
}
|
|
boost::optional<svg_path_ptr> marker = (*mark)->get_vector_data();
|
|
box2d<double> const& bbox = (*marker)->bounding_box();
|
|
double x1 = bbox.minx();
|
|
double y1 = bbox.miny();
|
|
double x2 = bbox.maxx();
|
|
double y2 = bbox.maxy();
|
|
double w = (*mark)->width();
|
|
double h = (*mark)->height();
|
|
|
|
agg::trans_affine recenter = agg::trans_affine_translation(-0.5*(x1+x2),-0.5*(y1+y2));
|
|
tr.transform(&x1,&y1);
|
|
tr.transform(&x2,&y2);
|
|
box2d<double> extent(x1,y1,x2,y2);
|
|
using namespace mapnik::svg;
|
|
|
|
for (unsigned i=0; i<feature.num_geometries(); ++i)
|
|
{
|
|
geometry_type & geom = feature.get_geometry(i);
|
|
// TODO - merge this code with point_symbolizer rendering
|
|
if (placement_method == MARKER_POINT_PLACEMENT || geom.size() <= 1)
|
|
{
|
|
double x;
|
|
double y;
|
|
double z=0;
|
|
label::interior_position(geom, x, y);
|
|
prj_trans.backward(x,y,z);
|
|
t_.forward(&x,&y);
|
|
extent.re_center(x,y);
|
|
|
|
if (sym.get_allow_overlap() ||
|
|
detector_.has_placement(extent))
|
|
{
|
|
render_marker(pixel_position(x - 0.5 * w, y - 0.5 * h) ,**mark, tr, 1);
|
|
|
|
if (!sym.get_ignore_placement())
|
|
detector_.insert(extent);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
clipped_geometry_type clipped(geom);
|
|
clipped.clip_box(query_extent_.minx(),query_extent_.miny(),query_extent_.maxx(),query_extent_.maxy());
|
|
path_type path(t_,clipped,prj_trans);
|
|
markers_placement<path_type, label_collision_detector4> placement(path, extent, recenter * tr, detector_,
|
|
sym.get_spacing() * scale_factor_,
|
|
sym.get_max_error(),
|
|
sym.get_allow_overlap());
|
|
double x, y, angle;
|
|
while (placement.get_point(x, y, angle))
|
|
{
|
|
agg::trans_affine matrix = recenter * tr * agg::trans_affine_rotation(angle) * agg::trans_affine_translation(x, y);
|
|
render_marker(pixel_position(x - 0.5 * w, y - 0.5 * h), **mark, matrix, 1,false);
|
|
}
|
|
}
|
|
context.fill();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void cairo_renderer_base::process(text_symbolizer const& sym,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
text_symbolizer_helper<face_manager<freetype_engine>,
|
|
label_collision_detector4> helper(
|
|
sym, feature, prj_trans,
|
|
width_, height_,
|
|
scale_factor_,
|
|
t_, font_manager_, detector_, query_extent_);
|
|
|
|
cairo_context context(context_);
|
|
context.set_operator(sym.comp_op());
|
|
|
|
placements_list const& placements = helper.get();
|
|
BOOST_FOREACH(glyph_positions_ptr glyphs, placements)
|
|
{
|
|
context.add_text(glyphs, face_manager_, font_manager_, scale_factor_);
|
|
}
|
|
}
|
|
|
|
template class cairo_renderer<Cairo::Surface>;
|
|
template class cairo_renderer<Cairo::Context>;
|
|
}
|
|
|
|
#endif // HAVE_CAIRO
|