DirectXLearningProject/Keyboard.h at main · Esauidk/DirectXLearningProject · GitHub

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#pragma once
#include <queue>
#include <bitset>
class Keyboard
{
	friend class Window;

public:
	class Event {
	public:
		enum class Type {
			Press,
			Release,
			Invalid
		};
		Event() noexcept :
			type(Type::Invalid),
			code(0u)
		{};
		Event(Type type, unsigned char code) noexcept :
			type(type),
			code(code)
		{};
		bool isPress() const noexcept {
			return type == Type::Press;
		}
		bool isRelease() const noexcept {
			return type == Type::Release;
		}
		bool isValid() const noexcept {
			return type != Type::Invalid;
		}
		unsigned char GetCode() const noexcept {
			return code;
		}
	private:
		Type type;
		unsigned char code;
	};
public:
	Keyboard() = default;
	Keyboard(const Keyboard&) = delete;
	Keyboard& operator = (const Keyboard&) = delete;
	//Key Event
	bool KeyIsPressed(unsigned char keycode) const noexcept;
	Event ReadKey() noexcept;
	bool KeyIsEmpty() const noexcept;
	void FlushKey() noexcept;
	//char event
	char ReadChar() noexcept;
	bool CharIsEmpty() const noexcept;
	void FlushChar() noexcept;
	void Flush() noexcept;
	//autorepeat
	void EnableAutoRepeat() noexcept;
	void DisableAutoRepeat() noexcept;
	bool AutoRepeatIsEnabled() const noexcept;
private:
	void OnKeyPressed(unsigned char keycode) noexcept;
	void OnKeyReleased(unsigned char keycode) noexcept;
	void OnChar(char character) noexcept;
	void ClearState() noexcept;
	template<typename T>
	static void TrimBuffer(std::queue<T>& buffer) noexcept;

	static constexpr unsigned int nKeys = 256u;
	static constexpr unsigned int bufferSize = 16u;
	bool autoRepeatEnabled = false;
	std::bitset<nKeys> keyStates;
	std::queue<Event> keybuffer;
	std::queue<char> charbuffer;
};