juancampa

  // Helper function to center arbitrary widgets. It works by measuring the width of the widgets after rendering, and
  // then using that offset on the next frame.
  fn centerer(ui: &mut Ui, add_contents: impl FnOnce(&mut Ui)) {
    ui.horizontal(|ui| {
      let id = ui.id().with("_centerer");
      let last_width: Option<f32> = ui.memory_mut(|mem| mem.data.get_temp(id));
      if let Some(last_width) = last_width {
        ui.add_space((ui.available_width() - last_width) / 2.0);
      }
      let res = ui