[HID] Redesigned support for Portals

- Added hotplug support on Windows
- Added support for XamInputNonControllerGetRawEx & XamInputNonControllerSetRawEx

src/xenia/ui/window.cc

@@ -490,6 +490,13 @@ void Window::OnMonitorUpdate(MonitorUpdateEvent& e) {
   }
 }
 
+void Window::OnUsbDeviceChanged(
+    bool is_arrival, WindowDestructionReceiver& destruction_receiver) {
+  SendEventToListeners(
+      [is_arrival](auto listener) { listener->OnUsbDeviceChanged(is_arrival); },
+      destruction_receiver);
+}
+
 bool Window::OnActualSizeUpdate(
     uint32_t new_physical_width, uint32_t new_physical_height,
     WindowDestructionReceiver& destruction_receiver) {

src/xenia/ui/window.h

@@ -553,6 +553,8 @@ class Window {
   void OnDpiChanged(UISetupEvent& e,
                     WindowDestructionReceiver& destruction_receiver);
   void OnMonitorUpdate(MonitorUpdateEvent& e);
+  void OnUsbDeviceChanged(bool is_arrival,
+                          WindowDestructionReceiver& destruction_receiver);
   // For calling when the platform changes something in the non-maximized,
   // non-fullscreen size of the window.
   void OnDesiredLogicalSizeUpdate(uint32_t new_desired_logical_width,

src/xenia/ui/window_listener.h

@@ -34,6 +34,7 @@ class WindowListener {
   virtual void OnLostFocus(UISetupEvent& e) {}
 
   virtual void OnFileDrop(FileDropEvent& e) {}
+  virtual void OnUsbDeviceChanged(bool is_arrival) {}
 };
 
 class WindowInputListener {

src/xenia/ui/window_win.cc

@@ -19,6 +19,7 @@
 #include "xenia/ui/virtual_key.h"
 #include "xenia/ui/windowed_app_context_win.h"
 
+#include <Dbt.h>
 #include <ShellScalingApi.h>
 #include <dwmapi.h>
 
@@ -48,6 +49,10 @@ Win32Window::~Win32Window() {
     DeleteTimerQueueTimer(nullptr, cursor_auto_hide_timer_, nullptr);
     cursor_auto_hide_timer_ = nullptr;
   }
+  if (usb_device_notify_) {
+    UnregisterDeviceNotification(usb_device_notify_);
+    usb_device_notify_ = nullptr;
+  }
   if (hwnd_) {
     // Set hwnd_ to null to ignore events from now on since this Win32Window is
     // entering an indeterminate state.
@@ -203,6 +208,14 @@ bool Win32Window::OpenImpl() {
   // Enable file dragging from external sources
   DragAcceptFiles(hwnd_, true);
 
+  // Register USB listener
+  DEV_BROADCAST_DEVICEINTERFACE filter = {};
+  filter.dbcc_size = sizeof(filter);
+  filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
+  usb_device_notify_ = RegisterDeviceNotificationW(
+      hwnd_, &filter,
+      DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES);
+
   // Apply the initial state from the Window that the window shouldn't be
   // visibly transitioned to.
 
@@ -1084,7 +1097,16 @@ LRESULT Win32Window::WndProc(HWND hWnd, UINT message, WPARAM wParam,
       MonitorUpdateEvent update_event{this, true};
       OnMonitorUpdate(update_event);
     } break;
-
+    case WM_DEVICECHANGE: {
+      if (wParam == DBT_DEVICEARRIVAL || wParam == DBT_DEVICEREMOVECOMPLETE) {
+        bool is_arrival = (wParam == DBT_DEVICEARRIVAL);
+        WindowDestructionReceiver destruction_receiver(this);
+        OnUsbDeviceChanged(is_arrival, destruction_receiver);
+        if (destruction_receiver.IsWindowDestroyedOrClosed()) {
+          break;
+        }
+      }
+    } break;
     case WM_DPICHANGED: {
       // Note that for some reason, WM_DPICHANGED is not sent when the window is
       // borderless fullscreen with per-monitor DPI awareness v1.

src/xenia/ui/window_win.h

@@ -151,6 +151,8 @@ class Win32Window : public Window {
   // Whether the cursor has been hidden after the expiration of the timer, and
   // hasn't been revealed yet.
   bool cursor_currently_auto_hidden_ = false;
+
+  HDEVNOTIFY usb_device_notify_ = nullptr;
 };
 
 class Win32MenuItem : public MenuItem {