+ /**
+ * @brief Retrieves the number of underline runs.
+ *
+ * @return The number of underline runs.
+ */
+ virtual Length GetNumberOfUnderlineRuns() const = 0;
+
+ /**
+ * @brief Retrieves the underline runs.
+ *
+ * @param[out] underlineRuns Pointer to a buffer where the underline runs are copied.
+ * @param[in] index Index of the first underline run to be copied.
+ * @param[in] numberOfRuns Number of underline runs to be copied.
+ */
+ virtual void GetUnderlineRuns( GlyphRun* underlineRuns,
+ UnderlineRunIndex index,
+ Length numberOfRuns ) const = 0;
+
+ /**
+ * @brief Retrieve the outline color.
+ *
+ * @return The outline color.
+ */
+ virtual const Vector4& GetOutlineColor() const = 0;
+
+ /**
+ * @brief Retrieves the width of an outline
+ *
+ * @return The width of the outline.
+ */
+ virtual uint16_t GetOutlineWidth() const = 0;
+