listener.hpp

Go to the documentation of this file.

#pragma once
#include "le2d/event.hpp"
#include <klib/base_types.hpp>
#include <gsl/pointers>
 
namespace le::input {
class Dispatch;
 
class Listener : public klib::Polymorphic {
  public:
    Listener(Listener const&) = delete;
    auto operator=(Listener const&) -> Listener& = delete;
 
    Listener() = default;
 
    explicit Listener(gsl::not_null<Dispatch*> dispatch);
 
    Listener(Listener&& rhs) noexcept;
    auto operator=(Listener&& rhs) noexcept -> Listener&;
 
    ~Listener() override;
 
    virtual auto consume_cursor_move(glm::vec2 /*pos*/) -> bool { return false; }
    virtual auto consume_codepoint(event::Codepoint /*codepoint*/) -> bool { return false; }
    virtual auto consume_key(event::Key const& /*key*/) -> bool { return false; }
    virtual auto consume_mouse_button(event::MouseButton const& /*button*/) -> bool { return false; }
    virtual auto consume_scroll(event::Scroll const& /*scroll*/) -> bool { return false; }
    virtual auto consume_drop(event::Drop const& /*drop*/) -> bool { return false; }
 
    virtual void disengage_input() {}
 
    [[nodiscard]] auto get_dispatch() const -> Dispatch* { return m_dispatch; }
    [[nodiscard]] auto is_attached() const -> bool { return get_dispatch() != nullptr; }
 
  private:
    Dispatch* m_dispatch{};
 
    friend class Dispatch;
};
} // namespace le::input