NoGUI: Migrate to new host abstraction

src/duckstation-nogui/nogui_host.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "common/types.h"
+#include "core/system.h"
+#include <functional>
+#include <string>
+
+namespace NoGUIHost {
+/// Sets batch mode (exit after game shutdown).
+bool InBatchMode();
+void SetBatchMode(bool enabled);
+
+/// Starts the virtual machine.
+void StartSystem(SystemBootParameters params);
+
+/// Returns the application name and version, optionally including debug/devel config indicator.
+std::string GetAppNameAndVersion();
+
+/// Returns the debug/devel config indicator.
+std::string GetAppConfigSuffix();
+
+/// Thread-safe settings access.
+void SaveSettings();
+
+/// Called on the UI thread in response to various events.
+void ProcessPlatformWindowResize(s32 width, s32 height, float scale);
+void ProcessPlatformMouseMoveEvent(float x, float y);
+void ProcessPlatformMouseButtonEvent(s32 button, bool pressed);
+void ProcessPlatformMouseWheelEvent(float x, float y);
+void ProcessPlatformKeyEvent(s32 key, bool pressed);
+void PlatformWindowFocusGained();
+void PlatformWindowFocusLost();
+bool GetSavedPlatformWindowGeometry(s32* x, s32* y, s32* width, s32* height);
+void SavePlatformWindowGeometry(s32 x, s32 y, s32 width, s32 height);
+} // namespace NoGUIHost