1 files changed, 25 insertions, 2 deletions
diff --git a/src/tuice/layout/size.rs b/src/tuice/layout/size.rs
index 209cd8f7..0dd95040 100644
--- a/src/tuice/layout/size.rs
+++ b/src/tuice/layout/size.rs
@@ -1,11 +1,34 @@
+use std::ops::{Add, AddAssign};
+
 /// A [`Size`] represents calculated widths and heights for a component.
 ///
 /// A [`Size`] is sent from a child component back up to its parents after
 /// first being given a [`Bounds`](super::Bounds) from the parent.
+#[derive(Clone, Copy, Default)]
 pub struct Size {
-    /// The given width.
+    /// The width that the component has determined.
     pub width: u16,
 
-    /// The given height.
+    /// The height that the component has determined.
     pub height: u16,
 }
+
+impl Add for Size {
+    type Output = Self;
+
+    fn add(self, rhs: Self) -> Self::Output {
+        Self {
+            width: self.width + rhs.width,
+            height: self.height + rhs.height,
+        }
+    }
+}
+
+impl AddAssign for Size {
+    fn add_assign(&mut self, rhs: Self) {
+        *self = Self {
+            width: self.width + rhs.width,
+            height: self.height + rhs.height,
+        }
+    }
+}