48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
#pragma once
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#include <mbgl/style/layer.hpp>
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#include <vector>
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namespace mbgl {
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namespace style {
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class LayerProperties;
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} // namespace style
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class Bucket;
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class BucketParameters;
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class GeometryTileLayer;
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class Layout;
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class LayoutParameters;
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class RenderLayer;
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/**
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* @brief The LayerFactory abstract class
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*
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* This class is responsible for creation of the layer objects that belong to a
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* concrete layer type.
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*/
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class LayerFactory {
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public:
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virtual ~LayerFactory() = default;
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/// Returns the layer type data.
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virtual const style::LayerTypeInfo* getTypeInfo() const noexcept = 0;
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/// Returns a new Layer instance on success call; returns `nullptr` otherwise.
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virtual std::unique_ptr<style::Layer> createLayer(const std::string& id,
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const style::conversion::Convertible& value) noexcept = 0;
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/// Returns a new RenderLayer instance.
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virtual std::unique_ptr<RenderLayer> createRenderLayer(Immutable<style::Layer::Impl>) noexcept = 0;
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/// Returns a new Bucket instance on success call; returns `nullptr` otherwise.
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virtual std::unique_ptr<Bucket> createBucket(const BucketParameters&,
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const std::vector<Immutable<style::LayerProperties>>&) noexcept;
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/// Returns a new Layout instance on success call; returns `nullptr` otherwise.
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virtual std::unique_ptr<Layout> createLayout(const LayoutParameters&,
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std::unique_ptr<GeometryTileLayer>,
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const std::vector<Immutable<style::LayerProperties>>&) noexcept;
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protected:
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std::optional<std::string> getSource(const style::conversion::Convertible& value) const noexcept;
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};
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} // namespace mbgl
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