switch to element defined span lens + better size fn

src/core/text/mod.rs

@@ -75,6 +75,7 @@ impl Text {
                 &self.content,
                 &Attrs::new().family(self.view.attrs.family),
                 Shaping::Advanced,
+                None,
             );
         }
         self.view.draw(ctx)
@@ -88,8 +89,8 @@ impl Widget for Text {
         painter.texture_within(&tex.handle, region);
     }
 
-    fn desired_size(&mut self, ctx: &mut SizeCtx) -> UiVec2 {
-        UiVec2::abs(self.update_buf(ctx).size())
+    fn desired_size(&mut self, ctx: &mut SizeCtx) -> Size {
+        Size::abs(self.update_buf(ctx).size())
     }
 }