Offset introduced

buffer.go

@@ -69,6 +69,12 @@ func (b *Buffer[T]) Height() int {
 	return b.height
 }
 
+// Offset returns the offset of b relative to its parent buffer.
+// Offset returns zeros if b has no parent
+func (b *Buffer[T]) Offset() (x, y int) {
+	return b.x, b.y
+}
+
 // OffsetX returns the horizontal offset of b relative to its parent buffer.
 // OffsetX returns 0 if b has no parent
 func (b *Buffer[T]) OffsetX() int {