1 files changed, 6 insertions, 0 deletions
diff --git a/core/src/length.rs b/core/src/length.rs
index 3adb996e..6dc15049 100644
--- a/core/src/length.rs
+++ b/core/src/length.rs
@@ -36,6 +36,12 @@ impl Length {
             Length::Fixed(_) => 0,
         }
     }
+
+    /// Returns `true` iff the [`Length`] is either [`Length::Fill`] or
+    // [`Length::FillPortion`].
+    pub fn is_fill(&self) -> bool {
+        self.fill_factor() != 0
+    }
 }
 
 impl From<Pixels> for Length {