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#pragma once
#include <mbgl/style/class_dictionary.hpp>
#include <mbgl/style/property_value.hpp>
#include <mbgl/style/data_driven_property_value.hpp>
#include <mbgl/style/transition_options.hpp>
#include <mbgl/renderer/property_evaluator.hpp>
#include <mbgl/renderer/cross_faded_property_evaluator.hpp>
#include <mbgl/renderer/data_driven_property_evaluator.hpp>
#include <mbgl/renderer/property_evaluation_parameters.hpp>
#include <mbgl/renderer/cascade_parameters.hpp>
#include <mbgl/renderer/transitioning_property.hpp>
#include <mbgl/renderer/paint_property_binder.hpp>
#include <mbgl/util/constants.hpp>
#include <mbgl/util/interpolate.hpp>
#include <mbgl/util/indexed_tuple.hpp>
#include <mbgl/util/ignore.hpp>
#include <utility>
namespace mbgl {
class GeometryTileFeature;
namespace style {
template <class Value>
class CascadingPaintProperty {
public:
bool isUndefined() const {
return values.find(ClassID::Default) == values.end();
}
const Value& get(const optional<std::string>& klass) const {
static const Value staticValue{};
const auto it = values.find(klass ? ClassDictionary::Get().lookup(*klass) : ClassID::Default);
return it == values.end() ? staticValue : it->second;
}
void set(const Value& value_, const optional<std::string>& klass) {
values[klass ? ClassDictionary::Get().lookup(*klass) : ClassID::Default] = value_;
}
const TransitionOptions& getTransition(const optional<std::string>& klass) const {
static const TransitionOptions staticValue{};
const auto it = transitions.find(klass ? ClassDictionary::Get().lookup(*klass) : ClassID::Default);
return it == transitions.end() ? staticValue : it->second;
}
void setTransition(const TransitionOptions& transition, const optional<std::string>& klass) {
transitions[klass ? ClassDictionary::Get().lookup(*klass) : ClassID::Default] = transition;
}
template <class TransitioningProperty>
TransitioningProperty cascade(const CascadeParameters& params, TransitioningProperty prior) const {
TransitionOptions transition;
Value value;
for (const auto classID : params.classes) {
if (values.find(classID) != values.end()) {
value = values.at(classID);
break;
}
}
for (const auto classID : params.classes) {
if (transitions.find(classID) != transitions.end()) {
transition = transitions.at(classID).reverseMerge(transition);
break;
}
}
return TransitioningProperty(std::move(value),
std::move(prior),
transition.reverseMerge(params.transition),
params.now);
}
private:
std::map<ClassID, Value> values;
std::map<ClassID, TransitionOptions> transitions;
};
template <class T>
class PaintProperty {
public:
using ValueType = PropertyValue<T>;
using CascadingType = CascadingPaintProperty<ValueType>;
using UnevaluatedType = TransitioningProperty<ValueType>;
using EvaluatorType = PropertyEvaluator<T>;
using EvaluatedType = T;
static constexpr bool IsDataDriven = false;
};
template <class T, class A>
class DataDrivenPaintProperty {
public:
using ValueType = DataDrivenPropertyValue<T>;
using CascadingType = CascadingPaintProperty<ValueType>;
using UnevaluatedType = TransitioningProperty<ValueType>;
using EvaluatorType = DataDrivenPropertyEvaluator<T>;
using EvaluatedType = PossiblyEvaluatedPropertyValue<T>;
static constexpr bool IsDataDriven = true;
using Type = T;
using Attribute = A;
};
template <class T>
class CrossFadedPaintProperty {
public:
using ValueType = PropertyValue<T>;
using CascadingType = CascadingPaintProperty<ValueType>;
using UnevaluatedType = TransitioningProperty<ValueType>;
using EvaluatorType = CrossFadedPropertyEvaluator<T>;
using EvaluatedType = Faded<T>;
static constexpr bool IsDataDriven = false;
};
template <class P>
struct IsDataDriven : std::integral_constant<bool, P::IsDataDriven> {};
template <class... Ps>
class PaintProperties {
public:
using Properties = TypeList<Ps...>;
using DataDrivenProperties = FilteredTypeList<Properties, IsDataDriven>;
using Binders = PaintPropertyBinders<DataDrivenProperties>;
using EvaluatedTypes = TypeList<typename Ps::EvaluatedType...>;
using UnevaluatedTypes = TypeList<typename Ps::UnevaluatedType...>;
using CascadingTypes = TypeList<typename Ps::CascadingType...>;
template <class TypeList>
using Tuple = IndexedTuple<Properties, TypeList>;
class Evaluated : public Tuple<EvaluatedTypes> {
public:
using Tuple<EvaluatedTypes>::Tuple;
};
class Unevaluated : public Tuple<UnevaluatedTypes> {
public:
using Tuple<UnevaluatedTypes>::Tuple;
bool hasTransition() const {
bool result = false;
util::ignore({ result |= this->template get<Ps>().hasTransition()... });
return result;
}
template <class P>
auto evaluate(const PropertyEvaluationParameters& parameters) {
using Evaluator = typename P::EvaluatorType;
return this->template get<P>().evaluate(
Evaluator(parameters, P::defaultValue()),
parameters.now
);
}
Evaluated evaluate(const PropertyEvaluationParameters& parameters) {
return Evaluated {
evaluate<Ps>(parameters)...
};
}
};
class Cascading : public Tuple<CascadingTypes> {
public:
using Tuple<CascadingTypes>::Tuple;
Unevaluated cascade(const CascadeParameters& parameters, Unevaluated&& prior) const {
return Unevaluated {
this->template get<Ps>().cascade(
parameters,
std::move(prior.template get<Ps>())
)...
};
}
};
};
} // namespace style
} // namespace mbgl
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