animation_engine.hpp

#ifndef TERMOX_SYSTEM_ANIMATION_ENGINE_HPP
#define TERMOX_SYSTEM_ANIMATION_ENGINE_HPP
#include <map>
#include <mutex>
 
#include <termox/common/lockable.hpp>
#include <termox/common/timer.hpp>
#include <termox/system/event_loop.hpp>
#include <termox/system/event_queue.hpp>
 
namespace ox {
class Widget;
 
class Animation_engine : private Lockable<std::recursive_mutex> {
   public:
    using Clock_t    = Timer::Clock_t;
    using Duration_t = Timer::Duration_t;
    using Time_point = Timer::Time_point;
 
    struct Registered_data {
        Duration_t interval;
        Time_point last_event_time;
    };
 
    static auto constexpr default_interval = Duration_t{100};
 
   public:
    void register_widget(Widget& w, Duration_t interval);
 
    void register_widget(Widget& w, FPS fps);
 
    void unregister_widget(Widget& w);
 
    [[nodiscard]] auto is_empty() const -> bool;
 
    void start();
 
    void stop();
 
    [[nodiscard]] auto is_running() const -> bool;
 
   private:
    std::map<Widget*, Registered_data> subjects_;
    Event_loop loop_;
    Timer timer_ = Timer{default_interval};
 
   private:
    auto get_timer_events() -> std::vector<Timer_event>&;
 
    void loop_function(Event_queue& queue);
};
 
}  // namespace ox
#endif  // TERMOX_SYSTEM_ANIMATION_ENGINE_HPP