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#include "catch.hpp"
#include <mapnik/memory_datasource.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/feature_factory.hpp>
#include <mapnik/map.hpp>
#include <mapnik/params.hpp>
#include <mapnik/expression.hpp>
#include <mapnik/layer.hpp>
#include <mapnik/rule.hpp>
#include <mapnik/feature_style_processor_impl.hpp>
#include <mapnik/value/types.hpp>
#include <mapnik/symbolizer.hpp>
#include <mapnik/geometry/geometry_type.hpp>
struct rendering_result
{
unsigned start_map_processing = 0;
unsigned end_map_processing = 0;
unsigned end_layer_processing = 0;
unsigned start_style_processing = 0;
unsigned end_style_processing = 0;
std::vector<mapnik::box2d<double>> layer_query_extents;
std::vector<mapnik::geometry::geometry<double>> geometries;
};
class test_renderer : public mapnik::feature_style_processor<test_renderer>
{
public:
using processor_impl_type = test_renderer;
test_renderer(mapnik::Map const& map, rendering_result& result)
: mapnik::feature_style_processor<test_renderer>(map),
result_(result),
painted_(false),
vars_()
{}
void start_map_processing(mapnik::Map const& map) { result_.start_map_processing++; }
void end_map_processing(mapnik::Map const& map) { result_.end_map_processing++; }
void start_layer_processing(mapnik::layer const& lay, mapnik::box2d<double> const& query_extent)
{
result_.layer_query_extents.push_back(query_extent);
}
void end_layer_processing(mapnik::layer const& lay) { result_.end_layer_processing++; }
void start_style_processing(mapnik::feature_type_style const& st) { result_.start_style_processing++; }
void end_style_processing(mapnik::feature_type_style const& st) { result_.end_style_processing++; }
template<typename Symbolizer>
void process(Symbolizer const& sym, mapnik::feature_impl& feature, mapnik::proj_transform const& prj_trans)
{
result_.geometries.push_back(feature.get_geometry());
}
bool process(mapnik::rule::symbolizers const&, mapnik::feature_impl&, mapnik::proj_transform const&)
{
return false;
}
double scale_factor() const { return 1; }
mapnik::attributes const& variables() const { return vars_; }
mapnik::eAttributeCollectionPolicy attribute_collection_policy() const
{
return mapnik::eAttributeCollectionPolicy::DEFAULT;
}
bool painted() const { return painted_; }
void painted(bool painted) { painted_ = painted; }
private:
rendering_result& result_;
bool painted_;
mapnik::attributes vars_;
};
std::shared_ptr<mapnik::memory_datasource> prepare_datasource()
{
mapnik::parameters params;
params["type"] = "memory";
using datasource_ptr = std::shared_ptr<mapnik::memory_datasource>;
datasource_ptr datasource = std::make_shared<mapnik::memory_datasource>(params);
mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
{
mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx, 1));
mapnik::geometry::point<double> point(1, 2);
feature->set_geometry(std::move(point));
datasource->push(feature);
}
{
mapnik::feature_ptr feature(mapnik::feature_factory::create(ctx, 2));
mapnik::geometry::line_string<double> path;
path.emplace_back(-10, 0);
path.emplace_back(0, 20);
path.emplace_back(10, 0);
path.emplace_back(15, 5);
feature->set_geometry(std::move(path));
datasource->push(feature);
}
return datasource;
}
mapnik::Map prepare_map()
{
mapnik::Map map(256, 256);
mapnik::feature_type_style lines_style;
mapnik::rule rule;
mapnik::line_symbolizer line_sym;
rule.append(std::move(line_sym));
lines_style.add_rule(std::move(rule));
map.insert_style("lines", std::move(lines_style));
mapnik::layer lyr("layer");
lyr.set_datasource(prepare_datasource());
lyr.add_style("lines");
map.add_layer(lyr);
map.zoom_all();
return map;
}
TEST_CASE("feature_style_processor")
{
SECTION("test_renderer")
{
mapnik::Map map(prepare_map());
rendering_result result;
test_renderer renderer(map, result);
renderer.apply();
REQUIRE(renderer.painted());
REQUIRE(result.start_map_processing == 1);
REQUIRE(result.end_map_processing == 1);
REQUIRE(result.end_layer_processing == 1);
REQUIRE(result.start_style_processing == 1);
REQUIRE(result.end_style_processing == 1);
REQUIRE(result.layer_query_extents.size() == 1);
mapnik::box2d<double> const reference_query_extent(-10, 0, 15, 20);
REQUIRE(result.layer_query_extents.front() == reference_query_extent);
REQUIRE(result.geometries.size() == 2);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
}
SECTION("test_renderer - apply() with single layer")
{
mapnik::Map map(prepare_map());
rendering_result result;
test_renderer renderer(map, result);
std::set<std::string> attributes;
mapnik::layer const& layer = map.get_layer(0);
renderer.apply(layer, attributes);
REQUIRE(renderer.painted());
REQUIRE(result.start_map_processing == 1);
REQUIRE(result.end_map_processing == 1);
REQUIRE(result.end_layer_processing == 1);
REQUIRE(result.start_style_processing == 1);
REQUIRE(result.end_style_processing == 1);
REQUIRE(result.layer_query_extents.size() == 1);
mapnik::box2d<double> const reference_query_extent(-10, 0, 15, 20);
REQUIRE(result.layer_query_extents.front() == reference_query_extent);
REQUIRE(result.geometries.size() == 2);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
}
SECTION("test_renderer - apply_to_layer")
{
mapnik::Map map(prepare_map());
rendering_result result;
test_renderer renderer(map, result);
std::set<std::string> attributes;
mapnik::projection map_proj(map.srs(), true);
mapnik::layer const& layer = map.get_layer(0);
renderer.apply_to_layer(layer,
renderer,
map_proj,
map.scale(),
map.scale_denominator(),
map.width(),
map.height(),
map.get_current_extent(),
0,
attributes);
REQUIRE(renderer.painted());
REQUIRE(result.start_map_processing == 0);
REQUIRE(result.end_map_processing == 0);
REQUIRE(result.end_layer_processing == 1);
REQUIRE(result.start_style_processing == 1);
REQUIRE(result.end_style_processing == 1);
REQUIRE(result.layer_query_extents.size() == 1);
mapnik::box2d<double> const reference_query_extent(-10, 0, 15, 20);
REQUIRE(result.layer_query_extents.front() == reference_query_extent);
REQUIRE(result.geometries.size() == 2);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[0]) == mapnik::geometry::geometry_types::Point);
REQUIRE(mapnik::geometry::geometry_type(result.geometries[1]) == mapnik::geometry::geometry_types::LineString);
}
}
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