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#pragma once
#include <mbgl/style/expression/expression.hpp>
#include <mbgl/style/source.hpp>
#include <mbgl/tile/tile_id.hpp>
#include <mbgl/util/constants.hpp>
#include <mbgl/util/geojson.hpp>
#include <mbgl/util/optional.hpp>
#include <memory>
#include <unordered_map>
#include <utility>
namespace mbgl {
class AsyncRequest;
class Scheduler;
namespace style {
struct GeoJSONOptions {
// GeoJSON-VT options
uint8_t minzoom = 0;
uint8_t maxzoom = 18;
uint16_t tileSize = util::tileSize;
uint16_t buffer = 128;
double tolerance = 0.375;
bool lineMetrics = false;
// Supercluster options
bool cluster = false;
uint16_t clusterRadius = 50;
uint8_t clusterMaxZoom = 17;
using ClusterExpression = std::pair<std::shared_ptr<mbgl::style::expression::Expression>,
std::shared_ptr<mbgl::style::expression::Expression>>;
using ClusterProperties = std::unordered_map<std::string, ClusterExpression>;
ClusterProperties clusterProperties;
static Immutable<GeoJSONOptions> defaultOptions();
};
class GeoJSONData {
public:
using TileFeatures = mapbox::feature::feature_collection<int16_t>;
using Features = mapbox::feature::feature_collection<double>;
static std::shared_ptr<GeoJSONData> create(const GeoJSON&,
Immutable<GeoJSONOptions> = GeoJSONOptions::defaultOptions(),
std::shared_ptr<Scheduler> scheduler = nullptr);
virtual ~GeoJSONData() = default;
virtual void getTile(const CanonicalTileID&, const std::function<void(TileFeatures)>&) = 0;
// SuperclusterData
virtual Features getChildren(const std::uint32_t) = 0;
virtual Features getLeaves(const std::uint32_t,
const std::uint32_t limit = 10u,
const std::uint32_t offset = 0u) = 0;
virtual std::uint8_t getClusterExpansionZoom(std::uint32_t) = 0;
virtual std::shared_ptr<Scheduler> getScheduler() { return nullptr; }
};
class GeoJSONSource final : public Source {
public:
GeoJSONSource(std::string id, Immutable<GeoJSONOptions> = GeoJSONOptions::defaultOptions());
~GeoJSONSource() final;
void setURL(const std::string& url);
void setGeoJSON(const GeoJSON&);
void setGeoJSONData(std::shared_ptr<GeoJSONData>);
optional<std::string> getURL() const;
const GeoJSONOptions& getOptions() const;
class Impl;
const Impl& impl() const;
void loadDescription(FileSource&) final;
bool supportsLayerType(const mbgl::style::LayerTypeInfo*) const override;
mapbox::base::WeakPtr<Source> makeWeakPtr() override {
return weakFactory.makeWeakPtr();
}
protected:
Mutable<Source::Impl> createMutable() const noexcept final;
private:
optional<std::string> url;
std::unique_ptr<AsyncRequest> req;
std::shared_ptr<Scheduler> threadPool;
mapbox::base::WeakPtrFactory<Source> weakFactory {this};
};
template <>
inline bool Source::is<GeoJSONSource>() const {
return getType() == SourceType::GeoJSON;
}
} // namespace style
} // namespace mbgl
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