Mouse.h

#pragma once
 
#include "../FoundationBase.h"
 
#include <glm/vec2.hpp>
 
#include <variant>
#include <vector>
 
namespace Cogs
{
  class Window;
 
  enum MouseButton : int
  {
    Left,
    Right,
    Middle,
 
    Count,
    NoButton
  };
 
  class COGSFOUNDATION_API Mouse
  {
  public:
 
    struct State {
      bool buttonDown[MouseButton::Count] = {};
      glm::ivec2 position = {-100000, -100000};
      int wheel = 0;
    };
 
    struct Event {
      enum class Type {
        Press,
        Release,
        Move,
        Wheel,
        Reset
      };
 
      struct ButtonData {
        MouseButton button;
      };
 
      struct MoveData {
        glm::ivec2 newPosition;
      };
 
      struct WheelData {
        int offset;
      };
 
      Type type;  
      double timestamp_ms; 
      glm::ivec2 currPosition; 
 
      std::variant<ButtonData, MoveData, WheelData> data;
    };
 
    void update();
 
    void submitButtonDown(MouseButton button, double timestamp_ms);
    void submitButtonUp(MouseButton button, double timestamp_ms);
    void submitMove(const glm::ivec2& position, double timestamp_ms);
    void submitWheel(int offset, double timestamp_ms);
    void submitReset(double timestamp_ms);
 
    const State& getState() const { return state; }
    const std::vector<Event>& getEvents() const { return events; }
 
  private:
    State state;
    std::vector<Event> events;
 
    std::vector<Event> eventQueue;
  };
}