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#pragma once
#include <mbgl/style/layer.hpp>
#include <mbgl/style/types.hpp>
#include <mbgl/style/filter.hpp>
#include <rapidjson/writer.h>
#include <rapidjson/stringbuffer.h>
#include <string>
#include <limits>
namespace mbgl {
class RenderLayer;
namespace style {
/**
* `Layer::Impl` contains the internal implementation of `Layer`: the details that need to be accessible to other parts
* of the code, but hidden from the public API. Like `Layer`, it is an abstract base class, with derived classes for
* each layer type.
*
* Members that are public in `Layer` are part of the public API for all layers.
* Members that are public in `FooLayer` are part of the public API for "foo" layers.
* Members that are public in `Layer::Impl` are part of the internal API for all layers.
* Members that are public in `FooLayer::Impl` are part of the internal API for "foo" layers.
* Members that are private in `FooLayer::Impl` are internal to "foo" layers.
*/
class Layer::Impl {
public:
Impl(LayerType, std::string layerID, std::string sourceID);
virtual ~Impl() = default;
Impl& operator=(const Impl&) = delete;
// Returns true buckets if properties affecting layout have changed: i.e. filter,
// visibility, layout properties, or data-driven paint properties.
virtual bool hasLayoutDifference(const Layer::Impl&) const = 0;
// Utility function for automatic layer grouping.
virtual void stringifyLayout(rapidjson::Writer<rapidjson::StringBuffer>&) const = 0;
virtual LayerFactory* getLayerFactory() const noexcept = 0;
const LayerType type;
std::string id;
std::string source;
std::string sourceLayer;
Filter filter;
float minZoom = -std::numeric_limits<float>::infinity();
float maxZoom = std::numeric_limits<float>::infinity();
VisibilityType visibility = VisibilityType::Visible;
protected:
Impl(const Impl&) = default;
};
} // namespace style
} // namespace mbgl
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