Add size info to icon

src/elements/icon.rs

@@ -192,6 +192,13 @@ impl Icon {
         self.iconizable_wrapper.icon()
     }
 
+    pub fn extent(&self) -> (i32, i32) {
+        (
+            self.framable.right() - self.framable.left(),
+            self.framable.bottom() - self.framable.top(),
+        )
+    }
+
     fn disable_base(&self) -> Result<()> {
         self.framable.delete()?;