Formalize scene viewport chrome and presentation helpers

editor/src/Viewport/SceneViewportInteractionFrame.h

@@ -1,9 +1,11 @@
 #pragma once
 
 #include "Core/IEditorContext.h"
+#include "SceneViewportNavigation.h"
 #include "IViewportHostService.h"
 #include "SceneViewportEditorModes.h"
 #include "SceneViewportHudOverlay.h"
+#include "SceneViewportInteractionActions.h"
 #include "SceneViewportInteractionResolver.h"
 #include "SceneViewportTransformGizmoCoordinator.h"
 
@@ -128,5 +130,62 @@ inline SceneViewportInteractionResolveRequest BuildSceneViewportInteractionResol
     return request;
 }
 
+inline bool ShouldFocusSceneViewportAfterInteraction(
+    bool toolCommandTriggered,
+    const SceneViewportInteractionActions& interactionActions,
+    const SceneViewportNavigationUpdate& navigationUpdate) {
+    return toolCommandTriggered ||
+        interactionActions.HasClickAction() ||
+        navigationUpdate.beginLookDrag ||
+        navigationUpdate.beginPanDrag;
+}
+
+struct SceneViewportPresentationRequest {
+    IEditorContext* context = nullptr;
+    IViewportHostService* viewportHostService = nullptr;
+    bool hasInteractiveViewport = false;
+    SceneViewportFrameGeometry geometry = {};
+    SceneViewportTransformGizmoFrameOptions gizmoFrameOptions = {};
+    SceneViewportMoveGizmo* moveGizmo = nullptr;
+    SceneViewportRotateGizmo* rotateGizmo = nullptr;
+    SceneViewportScaleGizmo* scaleGizmo = nullptr;
+    ImDrawList* drawList = nullptr;
+    ImVec2 viewportMin = ImVec2(0.0f, 0.0f);
+    ImVec2 viewportMax = ImVec2(0.0f, 0.0f);
+
+    bool IsValid() const {
+        return context != nullptr &&
+            viewportHostService != nullptr &&
+            moveGizmo != nullptr &&
+            rotateGizmo != nullptr &&
+            scaleGizmo != nullptr;
+    }
+};
+
+inline void RefreshAndDrawSceneViewportPresentation(const SceneViewportPresentationRequest& request) {
+    if (!request.IsValid() || !request.hasInteractiveViewport) {
+        return;
+    }
+
+    const SceneViewportOverlayData overlay = request.viewportHostService->GetSceneViewOverlayData();
+    RefreshAndSubmitSceneViewportTransformGizmoFrame(
+        *request.viewportHostService,
+        BuildSceneViewportTransformGizmoRefreshRequest(
+            *request.context,
+            overlay,
+            request.geometry.viewportSize,
+            request.geometry.localMousePosition,
+            request.gizmoFrameOptions),
+        *request.moveGizmo,
+        *request.rotateGizmo,
+        *request.scaleGizmo);
+
+    DrawSceneViewportHudOverlay(
+        request.drawList,
+        BuildSceneViewportHudOverlayData(overlay),
+        request.viewportMin,
+        request.viewportMax);
+}
+
 } // namespace Editor
 } // namespace XCEngine