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#pragma once
#include <mbgl/text/glyph.hpp>
#include <mbgl/renderer/render_layer.hpp>
#include <mbgl/style/image_impl.hpp>
#include <mbgl/style/layers/symbol_layer_impl.hpp>
#include <mbgl/style/layers/symbol_layer_properties.hpp>
namespace mbgl {
namespace style {
// {icon,text}-specific paint-property packs for use in the symbol Programs.
// Since each program deals either with icons or text, using a smaller property set
// lets us avoid unnecessarily binding attributes for properties the program wouldn't use.
class IconPaintProperties : public Properties<
IconOpacity,
IconColor,
IconHaloColor,
IconHaloWidth,
IconHaloBlur,
IconTranslate,
IconTranslateAnchor
> {};
class TextPaintProperties : public Properties<
TextOpacity,
TextColor,
TextHaloColor,
TextHaloWidth,
TextHaloBlur,
TextTranslate,
TextTranslateAnchor
> {};
// Repackaging evaluated values from SymbolLayoutProperties + SymbolPaintProperties
// for genericity over icons vs. text.
class SymbolPropertyValues {
public:
// Layout
AlignmentType pitchAlignment;
AlignmentType rotationAlignment;
bool keepUpright;
// Paint
std::array<float, 2> translate;
TranslateAnchorType translateAnchor;
bool hasHalo;
bool hasFill;
float maxCameraDistance; // 1.5 for road labels, or 10 (essentially infinite) for everything else
};
} // namespace style
class BucketParameters;
class SymbolLayout;
class GeometryTileLayer;
class RenderSymbolLayer: public RenderLayer {
public:
RenderSymbolLayer(Immutable<style::SymbolLayer::Impl>);
~RenderSymbolLayer() final = default;
void transition(const TransitionParameters&) override;
void evaluate(const PropertyEvaluationParameters&) override;
bool hasTransition() const override;
void render(PaintParameters&, RenderSource*) override;
style::IconPaintProperties::PossiblyEvaluated iconPaintProperties() const;
style::TextPaintProperties::PossiblyEvaluated textPaintProperties() const;
style::SymbolPropertyValues iconPropertyValues(const style::SymbolLayoutProperties::PossiblyEvaluated&) const;
style::SymbolPropertyValues textPropertyValues(const style::SymbolLayoutProperties::PossiblyEvaluated&) const;
std::unique_ptr<Bucket> createBucket(const BucketParameters&, const std::vector<const RenderLayer*>&) const override;
std::unique_ptr<SymbolLayout> createLayout(const BucketParameters&,
const std::vector<const RenderLayer*>&,
std::unique_ptr<GeometryTileLayer>,
GlyphDependencies&,
ImageDependencies&) const;
// Paint properties
style::SymbolPaintProperties::Unevaluated unevaluated;
style::SymbolPaintProperties::PossiblyEvaluated evaluated;
float iconSize = 1.0f;
float textSize = 16.0f;
const style::SymbolLayer::Impl& impl() const;
};
template <>
inline bool RenderLayer::is<RenderSymbolLayer>() const {
return type == style::LayerType::Symbol;
}
} // namespace mbgl
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