[APP] Disable toggle fullscreen double click while rendering dialogs

src/xenia/app/emulator_window.cc

@@ -1073,6 +1073,10 @@ void EmulatorWindow::OnKeyDown(ui::KeyEvent& e) {
 }
 
 void EmulatorWindow::OnMouseDown(const ui::MouseEvent& e) {
+  if (imgui_drawer_->IsAnyDialogOpen()) {
+    return;
+  }
+
   if (e.button() == ui::MouseEvent::Button::kLeft) {
     ToggleFullscreenOnDoubleClick();
   }

src/xenia/ui/imgui_drawer.h

@@ -93,6 +93,8 @@ class ImGuiDrawer : public WindowInputListener, public UIDrawer {
   void LoadInputSystem(hid::InputSystem* input_system);
   void SetGuideButtonAction(std::function<void(uint8_t)> func);
 
+  bool IsAnyDialogOpen() const { return !dialogs_.empty(); };
+
  protected:
   void OnKeyDown(KeyEvent& e) override;
   void OnKeyUp(KeyEvent& e) override;