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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2025 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
*
*****************************************************************************/
#include "catch.hpp"
#include <mapnik/map.hpp>
#include <mapnik/agg_renderer.hpp>
#if defined(HAVE_CAIRO)
#include <mapnik/cairo/cairo_renderer.hpp>
#include <mapnik/cairo/cairo_image_util.hpp>
#endif
TEST_CASE("map")
{
SECTION("set background - agg")
{
mapnik::Map map(256, 256);
mapnik::image_rgba8 image(map.width(), map.height());
mapnik::color const c1(255, 0, 0);
mapnik::fill(image, c1);
CHECK(image(0, 0) == c1.rgba());
// Fully transparent black should replace red color
mapnik::color const c2(0, 0, 0, 0);
map.set_background(c2);
mapnik::agg_renderer<mapnik::image_rgba8> ren(map, image);
ren.apply();
CHECK(image(0, 0) == c2.rgba());
}
#if defined(HAVE_CAIRO)
SECTION("set background - cairo")
{
mapnik::Map map(256, 256);
mapnik::cairo_surface_ptr image_surface(
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, map.width(), map.height()),
mapnik::cairo_surface_closer());
mapnik::cairo_ptr image_context(mapnik::create_context(image_surface));
cairo_set_source_rgba(image_context.get(), 1.0, 0.0, 0.0, 1.0);
cairo_paint(image_context.get());
{
mapnik::image_rgba8 image(map.width(), map.height());
mapnik::cairo_image_to_rgba8(image, image_surface);
mapnik::color const c1(255, 0, 0);
CHECK(image(0, 0) == c1.rgba());
}
// Fully transparent black should replace red color
mapnik::color const c2(0, 0, 0, 0);
map.set_background(c2);
mapnik::cairo_renderer<mapnik::cairo_ptr> ren(map, image_context, 1.0);
ren.apply();
{
mapnik::image_rgba8 image(map.width(), map.height());
mapnik::cairo_image_to_rgba8(image, image_surface);
CHECK(image(0, 0) == c2.rgba());
}
}
#endif
}
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