Add workspace panel overlay routing

editor/include/XCEditor/Workspace/UIEditorWorkspaceInputOwner.h

@@ -2,6 +2,7 @@
 
 #include <XCEditor/Panels/UIEditorPanelContentHost.h>
 #include <XCEditor/Docking/UIEditorDockHost.h>
+#include <XCEditor/Workspace/UIEditorWorkspacePanelOverlay.h>
 
 #include <XCEngine/UI/Types.h>
 
@@ -44,6 +45,7 @@ bool IsUIEditorWorkspaceViewportInputOwner(
 UIEditorWorkspaceInputOwner ResolveUIEditorWorkspacePointerInputOwner(
     const Widgets::UIEditorDockHostLayout& dockHostLayout,
     const UIEditorPanelContentHostFrame& contentHostFrame,
+    const std::vector<UIEditorWorkspacePanelOverlayRegion>& panelOverlayRegions,
     const ::XCEngine::UI::UIPoint& pointerPosition);
 
 UIEditorWorkspaceInputOwner NormalizeUIEditorWorkspaceInputOwner(

editor/include/XCEditor/Workspace/UIEditorWorkspaceInteraction.h

@@ -5,6 +5,7 @@
 #include <XCEditor/Panels/UIEditorPanelHostLifecycle.h>
 #include <XCEditor/Workspace/UIEditorWorkspaceCompose.h>
 #include <XCEditor/Workspace/UIEditorWorkspaceInputOwner.h>
+#include <XCEditor/Workspace/UIEditorWorkspacePanelOverlay.h>
 
 #include <XCEngine/UI/Types.h>
 
@@ -15,6 +16,7 @@ namespace XCEngine::UI::Editor {
 
 struct UIEditorWorkspaceInteractionModel {
     std::vector<UIEditorWorkspacePanelPresentationModel> workspacePresentations = {};
+    std::vector<UIEditorWorkspacePanelOverlayRegion> panelOverlayRegions = {};
 };
 
 struct UIEditorWorkspaceInteractionState {

editor/include/XCEditor/Workspace/UIEditorWorkspacePanelOverlay.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <XCEngine/UI/Types.h>
+
+#include <string>
+
+namespace XCEngine::UI::Editor {
+
+struct UIEditorWorkspacePanelOverlayRegion {
+    std::string panelId = {};
+    ::XCEngine::UI::UIRect bounds = {};
+    bool interactive = true;
+};
+
+} // namespace XCEngine::UI::Editor