79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
////////////////////////////////////////////////////////////
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//
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// SFML - Simple and Fast Multimedia Library
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// Copyright (C) 2007-2025 Laurent Gomila (laurent@sfml-dev.org)
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//
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// This software is provided 'as-is', without any express or implied warranty.
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it freely,
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// subject to the following restrictions:
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//
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// 1. The origin of this software must not be misrepresented;
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// you must not claim that you wrote the original software.
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// If you use this software in a product, an acknowledgment
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// in the product documentation would be appreciated but is not required.
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//
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// 2. Altered source versions must be plainly marked as such,
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// and must not be misrepresented as being the original software.
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//
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// 3. This notice may not be removed or altered from any source distribution.
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//
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////////////////////////////////////////////////////////////
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// Repeating isEventSubtype<T> allows for cleaner compiler errors.
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// It is not strictly necessary but it's useful nonetheless.
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// It works by ensuring that the code within the conditional is
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// only compiled when the condition is met. Otherwise you get
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// a static_assert failure in addition to the compiler failing
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// to compile the code within the compiletime conditional when
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// an incorrect template parameter is provided.
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////////////////////////////////////////////////////////////
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// Headers
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////////////////////////////////////////////////////////////
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#include <SFML/Window/Event.hpp> // NOLINT(misc-header-include-cycle)
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namespace sf
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{
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////////////////////////////////////////////////////////////
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template <typename TEventSubtype>
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Event::Event(const TEventSubtype& eventSubtype)
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{
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static_assert(isEventSubtype<TEventSubtype>, "TEventSubtype must be a subtype of sf::Event");
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if constexpr (isEventSubtype<TEventSubtype>)
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m_data = eventSubtype;
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}
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////////////////////////////////////////////////////////////
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template <typename TEventSubtype>
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bool Event::is() const
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{
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static_assert(isEventSubtype<TEventSubtype>, "TEventSubtype must be a subtype of sf::Event");
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if constexpr (isEventSubtype<TEventSubtype>)
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return std::holds_alternative<TEventSubtype>(m_data);
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}
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////////////////////////////////////////////////////////////
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template <typename TEventSubtype>
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const TEventSubtype* Event::getIf() const
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{
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static_assert(isEventSubtype<TEventSubtype>, "TEventSubtype must be a subtype of sf::Event");
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if constexpr (isEventSubtype<TEventSubtype>)
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return std::get_if<TEventSubtype>(&m_data);
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}
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////////////////////////////////////////////////////////////
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template <typename Visitor>
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decltype(auto) Event::visit(Visitor&& visitor) const
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{
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return std::visit(std::forward<Visitor>(visitor), m_data);
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}
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} // namespace sf
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