MouseInfo.hpp

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// Copyright 2025 Jan Niklas Hasse <jhasse@bixense.com>
// For conditions of distribution and use, see copyright notice in LICENSE.txt
#pragma once
 
#include "Vec2.hpp"
 
#include <optional>
 
namespace jngl {
 
class MouseInfo {
public:
    void setMousePos(Vec2);
 
    struct Down {
        Vec2 newPos() const;
        bool released();
 
        Vec2 startPos() const;
 
        Down(MouseInfo&, Vec2 objectPos);
        Down(const Down&) = delete;
        Down(Down&&) noexcept;
        Down& operator=(const Down&) = delete;
        Down& operator=(Down&&) noexcept;
        ~Down();
 
    private:
        MouseInfo* parent = nullptr;
        Vec2 startReference;
    };
 
    struct Over {
        Vec2 pos() const;
 
        std::optional<Down> pressed(Vec2 objectPos);
 
        explicit Over(MouseInfo&);
 
    private:
        MouseInfo& parent;
    };
 
    std::optional<Over> pos();
 
private:
    bool enabled = true;
    bool down = false;
    Vec2 mousePos;
};
 
} // namespace jngl