ui-system.h

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2025-2026 Manuel Osorio
#pragma once
 
#include "flint/ui/ui-context.h"
 
#include <memory>
#include <string>
#include <unordered_map>
 
namespace Flint {
 
  class UICanvas;
 
  class UISystem {
    public:
      UISystem() = default;
      ~UISystem() = default;
 
      UISystem(const UISystem &) = delete;
      UISystem &operator=(const UISystem &) = delete;
      UISystem(UISystem &&) = delete;
      UISystem &operator=(UISystem &&) = delete;
 
      UIContext *createContext(std::string name);
 
      void destroyContext(std::string name);
 
      [[nodiscard]] UIContext *getContext(const std::string &name) const;
 
      [[nodiscard]] UIContext *getActiveContext() const;
 
      [[nodiscard]] float getDisplayScale() const {
        return m_displayScale;
      }
 
      void setActiveContext(const std::string &name);
 
      void setDisplayScale(float scale);
 
      void clearActiveContext();
 
      void update(float deltaTime) const;
 
      void handleEvent(const AppEvent &event);
 
      void render(UICanvas &canvas) const;
 
    private:
      std::unordered_map<std::string, std::unique_ptr<UIContext>>
          m_contexts; 
      UIContext *m_activeContext = nullptr; 
      bool m_axisNavFiredX = false; 
      bool m_axisNavFiredY = false; 
      static constexpr float NAV_FIRE_THRESHOLD = 0.8f; 
      static constexpr float NAV_RESET_THRESHOLD = 0.3f; 
      float m_displayScale =
          1.0f; 
  };
 
}