export font and text direction to string

src/text.rs

@@ -18,6 +18,16 @@ impl Font {
             _ => Font::Custom,
         }
     }
+
+    pub(crate) fn to_string(&self) -> Result<String, &'static str> {
+        match &self {
+            Font::UnicodeEuropeanSmall => Ok("unicode_european_small".to_string()),
+            Font::UnicodeEuropeanLarge => Ok("unicode_european_large".to_string()),
+            Font::UnicodeAsian         => Ok("unicode_asian".to_string()),
+            Font::Arabic               => Ok("arabic".to_string()),
+            _                          => Err("No string available for this Font"),
+        }
+    }
 }
 
 #[derive(Debug, Eq, PartialEq)]