input: implement raw_mouse_handler

rpcs3/Input/raw_mouse_handler.h

@@ -0,0 +1,56 @@
+#pragma once
+
+#include "Emu/Io/MouseHandler.h"
+#include "Emu/RSX/display.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+class raw_mouse_handler;
+
+class raw_mouse
+{
+public:
+	raw_mouse() {}
+	raw_mouse(u32 index, const std::string& device_name, void* handle, raw_mouse_handler* handler);
+	virtual ~raw_mouse();
+
+	void update_window_handle();
+	display_handle_t window_handle() const { return m_window_handle; }
+
+#ifdef _WIN32
+	void update_values(const RAWMOUSE& state);
+#endif
+
+private:
+	u32 m_index = 0;
+	std::string m_device_name;
+	void* m_handle{};
+	display_handle_t m_window_handle{};
+	int m_window_width{};
+	int m_window_height{};
+	int m_pos_x{};
+	int m_pos_y{};
+	float m_mouse_acceleration = 1.0f;
+	raw_mouse_handler* m_handler{};
+};
+
+class raw_mouse_handler final : public MouseHandlerBase
+{
+	using MouseHandlerBase::MouseHandlerBase;
+
+public:
+	virtual ~raw_mouse_handler();
+
+	void Init(const u32 max_connect) override;
+
+#ifdef _WIN32
+	void handle_native_event(const MSG& msg);
+#endif
+
+private:
+	void enumerate_devices(u32 max_connect);
+
+	std::map<void*, raw_mouse> m_raw_mice;
+};