Introduce `center` widget helper

... and also make `center_x` and `center_y` set
`width` and `height` to `Length::Fill`, respectively.

This targets the most common use case when centering
things and removes a bunch of boilerplate as a result.

1 files changed, 3 insertions, 7 deletions

diff --git a/examples/toast/src/main.rs b/examples/toast/src/main.rs
index 9968962c..0fcf08c4 100644
--- a/examples/toast/src/main.rs
+++ b/examples/toast/src/main.rs
@@ -2,7 +2,7 @@ use iced::event::{self, Event};
 use iced::keyboard;
 use iced::keyboard::key;
 use iced::widget::{
-    self, button, column, container, pick_list, row, slider, text, text_input,
+    self, button, center, column, pick_list, row, slider, text, text_input,
 };
 use iced::{Alignment, Command, Element, Length, Subscription};
 
@@ -102,7 +102,7 @@ impl App {
                 .then_some(Message::Add),
         );
 
-        let content = container(
+        let content = center(
             column![
                 subtitle(
                     "Title",
@@ -146,11 +146,7 @@ impl App {
             ]
             .spacing(10)
             .max_width(200),
-        )
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y();
+        );
 
         toast::Manager::new(content, &self.toasts, Message::Close)
             .timeout(self.timeout_secs)