[HID] Pass 'is active' callback to input drivers.

src/xenia/kernel/xam/xam_module.cc

@@ -19,6 +19,10 @@ namespace xe {
 namespace kernel {
 namespace xam {
 
+std::atomic<int> xam_dialogs_shown_ = {0};
+
+bool xeXamIsUIActive() { return xam_dialogs_shown_ > 0; }
+
 XamModule::XamModule(Emulator* emulator, KernelState* kernel_state)
     : KernelModule(kernel_state, "xe:\\xam.xex"), loader_data_() {
   RegisterExportTable(export_resolver_);

src/xenia/kernel/xam/xam_module.h

@@ -21,6 +21,8 @@ namespace xe {
 namespace kernel {
 namespace xam {
 
+bool xeXamIsUIActive();
+
 class XamModule : public KernelModule {
  public:
   XamModule(Emulator* emulator, KernelState* kernel_state);

src/xenia/kernel/xam/xam_private.h

@@ -18,6 +18,8 @@ namespace xe {
 namespace kernel {
 namespace xam {
 
+bool xeXamIsUIActive();
+
 xe::cpu::Export* RegisterExport_xam(xe::cpu::Export* export_entry);
 
 // Registration functions, one per file.

src/xenia/kernel/xam/xam_ui.cc

@@ -41,7 +41,7 @@ namespace xam {
 // We deliberately delay the XN_SYS_UI = false notification to give games time
 // to create a listener (if they're insane enough do this).
 
-std::atomic<int> xam_dialogs_shown_ = {0};
+extern std::atomic<int> xam_dialogs_shown_;
 
 class XamDialog : public xe::ui::ImGuiDialog {
  public:
@@ -192,7 +192,7 @@ X_RESULT xeXamDispatchHeadlessEx(
   }
 }
 
-dword_result_t XamIsUIActive() { return xam_dialogs_shown_ > 0 ? 1 : 0; }
+dword_result_t XamIsUIActive() { return xeXamIsUIActive(); }
 DECLARE_XAM_EXPORT2(XamIsUIActive, kUI, kImplemented, kHighFrequency);
 
 class MessageBoxDialog : public XamDialog {