initial commit; cv 0.0.3

Api/OverlaySlot.hpp

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "PanelSlot.hpp"
+
+namespace PalUIExtension::Api
+{
+    // Same three-member surface as SizeBoxSlot (Padding + H/V alignment).
+    // Different engine class, different ClassPath -- not merged into one
+    // wrapper, matching how CanvasPanelSlot stands alone rather than
+    // sharing with PanelSlot's other concrete subclasses.
+    class OverlaySlot : public PanelSlot
+    {
+    public:
+        static auto ClassPath() -> const TCHAR* { return STR("/Script/UMG.OverlaySlot"); }
+        static auto DebugTag()  -> const TCHAR* { return STR("OverlaySlot"); }
+
+        OverlaySlot() = default;
+        explicit OverlaySlot(UObject* Obj)
+            : PanelSlot(Obj, ClassOf<OverlaySlot>(), DebugTag()) {}
+
+        // ---- setters (write through the UFUNCTION so SynchronizeProperties runs)
+
+        auto SetPadding(FMargin_ InPadding) -> bool
+        {
+            struct P { FMargin_ InPadding; } p{ InPadding };
+            return Call(STR("SetPadding"), p);
+        }
+        auto SetHorizontalAlignment(EHorizontalAlignment_ InHorizontalAlignment) -> bool
+        {
+            struct P { EHorizontalAlignment_ InHorizontalAlignment; } p{ InHorizontalAlignment };
+            return Call(STR("SetHorizontalAlignment"), p);
+        }
+        auto SetVerticalAlignment(EVerticalAlignment_ InVerticalAlignment) -> bool
+        {
+            struct P { EVerticalAlignment_ InVerticalAlignment; } p{ InVerticalAlignment };
+            return Call(STR("SetVerticalAlignment"), p);
+        }
+
+        // ---- property reads
+
+        auto GetPadding()            const -> std::optional<FMargin_>             { return PropertyValue<FMargin_>(STR("Padding")); }
+        auto GetHorizontalAlignment()const -> std::optional<EHorizontalAlignment_> { return PropertyValue<EHorizontalAlignment_>(STR("HorizontalAlignment")); }
+        auto GetVerticalAlignment()  const -> std::optional<EVerticalAlignment_>   { return PropertyValue<EVerticalAlignment_>(STR("VerticalAlignment")); }
+    };
+}