NoGUI: Migrate to new host abstraction

src/duckstation-nogui/win32_nogui_platform.h

@@ -0,0 +1,58 @@
+#pragma once
+
+#include <atomic>
+
+#include "common/windows_headers.h"
+
+#include "nogui_platform.h"
+
+class Win32NoGUIPlatform : public NoGUIPlatform
+{
+public:
+  Win32NoGUIPlatform();
+  ~Win32NoGUIPlatform();
+
+  bool Initialize();
+
+  void ReportError(const std::string_view& title, const std::string_view& message) override;
+
+  void SetDefaultConfig(SettingsInterface& si) override;
+
+  bool CreatePlatformWindow(std::string title) override;
+  void DestroyPlatformWindow() override;
+  std::optional<WindowInfo> GetPlatformWindowInfo() override;
+  void SetPlatformWindowTitle(std::string title) override;
+  void* GetPlatformWindowHandle() override;
+
+  std::optional<u32> ConvertHostKeyboardStringToCode(const std::string_view& str) override;
+  std::optional<std::string> ConvertHostKeyboardCodeToString(u32 code) override;
+
+  void RunMessageLoop() override;
+  void ExecuteInMessageLoop(std::function<void()> func) override;
+  void QuitMessageLoop() override;
+
+  void SetFullscreen(bool enabled) override;
+
+  bool RequestRenderWindowSize(s32 new_window_width, s32 new_window_height) override;
+
+private:
+  enum : u32
+  {
+    WM_FIRST = WM_USER + 1337,
+    WM_FUNC = WM_FIRST,
+    WM_WAKEUP,
+    WM_LAST = WM_WAKEUP
+  };
+
+  static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+  HWND m_hwnd{};
+  DWORD m_window_thread_id = 0;
+  RECT m_windowed_rect = {};
+  float m_window_scale = 1.0f;
+
+  std::atomic_bool m_message_loop_running{false};
+  std::atomic_bool m_fullscreen{false};
+
+  DWORD m_last_mouse_buttons = 0;
+};