109 lines
4.1 KiB
C++
109 lines
4.1 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) 2020 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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#include "catch.hpp"
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#include <mapnik/debug.hpp>
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#include <mapnik/marker.hpp>
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#include <mapnik/marker_cache.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/svg/svg_parser.hpp>
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#include <mapnik/svg/svg_converter.hpp>
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_renderer_agg.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#include <boost/range/combine.hpp>
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore_agg.hpp>
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_renderer_base.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_scanline_u.h"
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#pragma GCC diagnostic pop
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namespace
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{
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mapnik::image_rgba8 render_svg(std::string const& filename, double scale_factor)
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{
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using pixfmt = agg::pixfmt_rgba32_pre;
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using renderer_base = agg::renderer_base<pixfmt>;
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using renderer_solid = agg::renderer_scanline_aa_solid<renderer_base>;
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agg::rasterizer_scanline_aa<> ras_ptr;
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agg::scanline_u8 sl;
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std::shared_ptr<mapnik::marker const> marker = mapnik::marker_cache::instance().find(filename, false);
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mapnik::marker_svg const& svg = mapnik::util::get<mapnik::marker_svg>(*marker);
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double svg_width, svg_height ;
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std::tie(svg_width, svg_height) = svg.dimensions();
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int image_width = static_cast<int>(std::round(svg_width));
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int image_height = static_cast<int>(std::round(svg_height));
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mapnik::image_rgba8 im(image_width, image_height, true, true);
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agg::rendering_buffer buf(im.bytes(), im.width(), im.height(), im.row_size());
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pixfmt pixf(buf);
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renderer_base renb(pixf);
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agg::trans_affine mtx = agg::trans_affine_translation(-0.5 * svg_width, -0.5 * svg_height);
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mtx.scale(scale_factor);
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mtx.translate(0.5 * svg_width, 0.5 * svg_height);
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mapnik::svg::vertex_stl_adapter<mapnik::svg::svg_path_storage> stl_storage(svg.get_data()->source());
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mapnik::svg::svg_path_adapter svg_path(stl_storage);
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mapnik::svg::renderer_agg<mapnik::svg_path_adapter,
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mapnik::svg_attribute_type,
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renderer_solid,
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agg::pixfmt_rgba32_pre > renderer(svg_path,
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svg.get_data()->attributes());
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double opacity = 1.0;
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renderer.render(ras_ptr, sl, renb, mtx, opacity, {0, 0, svg_width, svg_height});
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return im;
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}
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bool equal(mapnik::image_rgba8 const& im1, mapnik::image_rgba8 const& im2)
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{
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if (im1.width() != im2.width() || im1.height() != im2.height())
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return false;
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for(auto tup : boost::combine(im1, im2))
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{
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if (boost::get<0>(tup) != boost::get<1>(tup)) return false;
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}
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return true;
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}
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}
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TEST_CASE("SVG renderer") {
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SECTION("SVG octocat inline/css")
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{
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double scale_factor = 1.0;
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std::string octocat_inline("./test/data/svg/octocat.svg");
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std::string octocat_css("./test/data/svg/octocat-css.svg");
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auto image1 = render_svg(octocat_inline, 1.0);
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auto image2 = render_svg(octocat_css, 1.0);
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REQUIRE(equal(image1, image2));
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}
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}
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