project-kyoku/include/core/systemevent.h

#pragma once

#include <variant>

#include "core/point.h"

namespace kku
{

struct SystemEvent
{
    enum class Type
    {
        None = 0,

        Resize = 1,

        KeyPress = 2,
        KeyRelease = 3,

        MouseWheelScroll = 4,
        MouseMove = 5,
        MousePress = 6,
        MouseRelease = 7
    };

    struct Size
    {
        std::size_t width = 0;
        std::size_t height = 0;
    };

    struct Key
    {
        char view = char(0);
        bool alt = false;
        bool control = false;
        bool shift = false;
    };

    struct Mouse
    {
        Point position;

        bool scrolled_up = false;

        enum class Button
        {
             None = 0,
            Wheel = 1,
             Left = 2,
            Right = 3
        };

        Button button = Button::Left;
    };

    struct None
    {};

    Type type = Type::None;
    std::variant<Size, Key, Mouse, None> data;
};
    
}