[nostalgia/core] Cleanup TileSheetEditor with new ImGui util functions

src/olympic/studio/modlib/include/studio/imguiutil.hpp

@@ -10,26 +10,30 @@
 
 namespace studio::ig {
 
-inline constexpr auto BtnSz = ImVec2{50, 22};
+inline constexpr auto BtnSz = ImVec2{52, 22};
 
-template<typename T>
 class IDStackItem {
-	private:
-		T m_id;
 	public:
-		explicit IDStackItem(T id) noexcept: m_id(id) {
-			ImGui::PushID(m_id);
-		}
-		~IDStackItem() noexcept {
-			ImGui::PopID();
-		}
+		explicit IDStackItem(int id) noexcept;
+		explicit IDStackItem(const char *id) noexcept;
+		explicit IDStackItem(ox::CStringView id) noexcept;
+		~IDStackItem() noexcept;
 };
 
 void centerNextWindow(turbine::Context &ctx) noexcept;
 
 bool PushButton(ox::CStringView lbl, ImVec2 const&btnSz = BtnSz) noexcept;
 
-void PopupBtns(float popupWidth, bool &popupOpen);
+enum class PopupResponse {
+	None,
+	OK,
+	Cancel,
+};
+
+PopupResponse PopupControlsOkCancel(float popupWidth, bool &popupOpen);
+
+[[nodiscard]]
+bool BeginPopup(turbine::Context &ctx, ox::CStringView popupName, bool &show, ImVec2 const&sz = {285, 0});
 
 /**
  *