137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
#pragma once
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#include "../base/Types.h"
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#include "../event/Event.h"
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#include <renderive/renderable/base/Renderable_Base.hpp>
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#include <atomic>
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#include <concepts>
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#include <functional>
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#include <memory>
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#include <mutex>
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#include <string>
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#include <type_traits>
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namespace renderive {
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class Renderable;
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namespace detail {
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class Painter;
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class Renderable_State_Observer;
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}
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class Event_Handler {
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public:
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virtual ~Event_Handler() = default;
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virtual void handle_event(const Event& event) = 0;
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};
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enum class Renderable_Observer_Event {
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None,
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Cache_Updated,
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Published
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};
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struct Renderable_Observation {
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Renderable_Observer_Event event{Renderable_Observer_Event::None};
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std::uint64_t event_time_ns{};
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std::uint64_t cache_update_count{};
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std::uint64_t publish_count{};
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};
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class LIB_DECL Renderable_Observer final {
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public:
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[[nodiscard]] Renderable_Observation observation() const noexcept;
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void observe_state(Renderable_Observer_Event event, std::uint64_t time_ns,
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std::uint64_t cache_update_count,
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std::uint64_t publish_count) noexcept;
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private:
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mutable std::mutex mutex_;
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Renderable_Observation observation_;
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};
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class LIB_DECL Renderable : public ::Renderable_Base {
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public:
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explicit Renderable(::Scene_Base& scene, bool cache_enabled = true);
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~Renderable() override;
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[[nodiscard]] Renderable_Cache_Mode get_cache_mode() const noexcept;
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void set_cache_mode(Renderable_Cache_Mode mode);
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[[nodiscard]] std::string object_name() const;
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void set_object_name(std::string name);
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[[nodiscard]] Renderable_Observation observation() const noexcept;
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protected:
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using Prepare_Task_Function =
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std::function<void(const Prepare_Render_Context&)>;
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using Paint_Task_Function =
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std::function<void(detail::Painter&, const Paint_Render_Context&)>;
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virtual void prepare_frame(const Prepare_Render_Context& context) = 0;
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virtual void paint(detail::Painter& painter,
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const Paint_Render_Context& context) = 0;
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virtual void build_prepare_graph(Renderable_Graph_Builder& builder) override;
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virtual void build_paint_graph(Renderable_Graph_Builder& builder) override;
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Renderable_Graph_Builder::Task add_prepare_task(Renderable_Graph_Builder& builder,
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std::string logical_key,
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std::string name,
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Prepare_Task_Function function);
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Renderable_Graph_Builder::Task add_paint_task(Renderable_Graph_Builder& builder,
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std::string logical_key,
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std::string name,
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Paint_Task_Function function);
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void changed() noexcept;
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void paint_changed() noexcept;
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void render_graph_changed() noexcept;
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private:
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void observe_state(Renderable_Observer_Event event, std::uint64_t time_ns,
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std::uint64_t cache_update_count,
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std::uint64_t publish_count) noexcept;
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friend class detail::Renderable_State_Observer;
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mutable std::mutex metadata_mutex_;
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std::string object_name_;
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Renderable_Observer observer_;
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};
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namespace detail {
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class Renderable_State_Observer {
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public:
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static constexpr bool enabled = true;
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explicit Renderable_State_Observer(Renderable* renderable) noexcept : renderable_(renderable) {}
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template <class Observation>
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void observe(const Observation& observation) noexcept {
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const bool cache_updated =
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observation.event == decltype(observation.event)::cache_updated;
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renderable_->observe_state(
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cache_updated ? Renderable_Observer_Event::Cache_Updated
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: Renderable_Observer_Event::Published,
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observation.time_ns,
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observation.cache_update_count,
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observation.publish_count
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);
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}
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private:
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Renderable* renderable_;
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};
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} // namespace detail
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namespace detail {
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template <class Value>
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inline constexpr bool Paint_Only_Property_Value =
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std::same_as<std::remove_cvref_t<Value>, Color> ||
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std::same_as<std::remove_cvref_t<Value>, Pen> ||
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std::same_as<std::remove_cvref_t<Value>, Brush>;
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} // namespace detail
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} // namespace renderive
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