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.

33 files changed, 145 insertions, 314 deletions

diff --git a/examples/checkbox/src/main.rs b/examples/checkbox/src/main.rs
index 38949336..bec4a954 100644
--- a/examples/checkbox/src/main.rs
+++ b/examples/checkbox/src/main.rs
@@ -1,5 +1,5 @@
-use iced::widget::{checkbox, column, container, row, text};
-use iced::{Element, Font, Length};
+use iced::widget::{center, checkbox, column, row, text};
+use iced::{Element, Font};
 
 const ICON_FONT: Font = Font::with_name("icons");
 
@@ -68,11 +68,6 @@ impl Example {
         let content =
             column![default_checkbox, checkboxes, custom_checkbox].spacing(20);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 }
diff --git a/examples/combo_box/src/main.rs b/examples/combo_box/src/main.rs
index 2feb4522..ff759ab4 100644
--- a/examples/combo_box/src/main.rs
+++ b/examples/combo_box/src/main.rs
@@ -1,5 +1,5 @@
 use iced::widget::{
-    column, combo_box, container, scrollable, text, vertical_space,
+    center, column, combo_box, scrollable, text, vertical_space,
 };
 use iced::{Alignment, Element, Length};
 
@@ -68,12 +68,7 @@ impl Example {
         .align_items(Alignment::Center)
         .spacing(10);
 
-        container(scrollable(content))
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(scrollable(content)).into()
     }
 }
 
diff --git a/examples/component/src/main.rs b/examples/component/src/main.rs
index b2c71b3f..5625f12a 100644
--- a/examples/component/src/main.rs
+++ b/examples/component/src/main.rs
@@ -1,5 +1,5 @@
-use iced::widget::container;
-use iced::{Element, Length};
+use iced::widget::center;
+use iced::Element;
 
 use numeric_input::numeric_input;
 
@@ -27,10 +27,8 @@ impl Component {
     }
 
     fn view(&self) -> Element<Message> {
-        container(numeric_input(self.value, Message::NumericInputChanged))
+        center(numeric_input(self.value, Message::NumericInputChanged))
             .padding(20)
-            .height(Length::Fill)
-            .center_y()
             .into()
     }
 }
diff --git a/examples/custom_quad/src/main.rs b/examples/custom_quad/src/main.rs
index c093e240..b3eee218 100644
--- a/examples/custom_quad/src/main.rs
+++ b/examples/custom_quad/src/main.rs
@@ -81,8 +81,8 @@ mod quad {
     }
 }
 
-use iced::widget::{column, container, slider, text};
-use iced::{Alignment, Color, Element, Length, Shadow, Vector};
+use iced::widget::{center, column, slider, text};
+use iced::{Alignment, Color, Element, Shadow, Vector};
 
 pub fn main() -> iced::Result {
     iced::run("Custom Quad - Iced", Example::update, Example::view)
@@ -187,12 +187,7 @@ impl Example {
         .max_width(500)
         .align_items(Alignment::Center);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 }
 
diff --git a/examples/custom_shader/src/main.rs b/examples/custom_shader/src/main.rs
index aa3dafe9..463b2df9 100644
--- a/examples/custom_shader/src/main.rs
+++ b/examples/custom_shader/src/main.rs
@@ -4,7 +4,7 @@ use scene::Scene;
 
 use iced::time::Instant;
 use iced::widget::shader::wgpu;
-use iced::widget::{checkbox, column, container, row, shader, slider, text};
+use iced::widget::{center, checkbox, column, row, shader, slider, text};
 use iced::window;
 use iced::{Alignment, Color, Element, Length, Subscription};
 
@@ -123,12 +123,7 @@ impl IcedCubes {
         let shader =
             shader(&self.scene).width(Length::Fill).height(Length::Fill);
 
-        container(column![shader, controls].align_items(Alignment::Center))
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(column![shader, controls].align_items(Alignment::Center)).into()
     }
 
     fn subscription(&self) -> Subscription<Message> {
diff --git a/examples/custom_widget/src/main.rs b/examples/custom_widget/src/main.rs
index aa49ebd0..261dcb81 100644
--- a/examples/custom_widget/src/main.rs
+++ b/examples/custom_widget/src/main.rs
@@ -82,8 +82,8 @@ mod circle {
 }
 
 use circle::circle;
-use iced::widget::{column, container, slider, text};
-use iced::{Alignment, Element, Length};
+use iced::widget::{center, column, slider, text};
+use iced::{Alignment, Element};
 
 pub fn main() -> iced::Result {
     iced::run("Custom Widget - Iced", Example::update, Example::view)
@@ -122,12 +122,7 @@ impl Example {
         .max_width(500)
         .align_items(Alignment::Center);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 }
 
diff --git a/examples/download_progress/src/main.rs b/examples/download_progress/src/main.rs
index 9f4769e0..e031ac44 100644
--- a/examples/download_progress/src/main.rs
+++ b/examples/download_progress/src/main.rs
@@ -1,7 +1,7 @@
 mod download;
 
-use iced::widget::{button, column, container, progress_bar, text, Column};
-use iced::{Alignment, Element, Length, Subscription};
+use iced::widget::{button, center, column, progress_bar, text, Column};
+use iced::{Alignment, Element, Subscription};
 
 pub fn main() -> iced::Result {
     iced::program("Download Progress - Iced", Example::update, Example::view)
@@ -67,13 +67,7 @@ impl Example {
                 .spacing(20)
                 .align_items(Alignment::End);
 
-        container(downloads)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .padding(20)
-            .into()
+        center(downloads).padding(20).into()
     }
 }
 
diff --git a/examples/editor/src/main.rs b/examples/editor/src/main.rs
index ed16018a..af05031a 100644
--- a/examples/editor/src/main.rs
+++ b/examples/editor/src/main.rs
@@ -277,7 +277,7 @@ fn action<'a, Message: Clone + 'a>(
     label: &'a str,
     on_press: Option<Message>,
 ) -> Element<'a, Message> {
-    let action = button(container(content).width(30).center_x());
+    let action = button(container(content).center_x().width(30));
 
     if let Some(on_press) = on_press {
         tooltip(
diff --git a/examples/events/src/main.rs b/examples/events/src/main.rs
index bf568c94..999ce8ef 100644
--- a/examples/events/src/main.rs
+++ b/examples/events/src/main.rs
@@ -1,6 +1,6 @@
 use iced::alignment;
 use iced::event::{self, Event};
-use iced::widget::{button, checkbox, container, text, Column};
+use iced::widget::{button, center, checkbox, text, Column};
 use iced::window;
 use iced::{Alignment, Command, Element, Length, Subscription};
 
@@ -84,11 +84,6 @@ impl Events {
             .push(toggle)
             .push(exit);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 }
diff --git a/examples/exit/src/main.rs b/examples/exit/src/main.rs
index 7bed272d..2de97e20 100644
--- a/examples/exit/src/main.rs
+++ b/examples/exit/src/main.rs
@@ -1,6 +1,6 @@
-use iced::widget::{button, column, container};
+use iced::widget::{button, center, column};
 use iced::window;
-use iced::{Alignment, Command, Element, Length};
+use iced::{Alignment, Command, Element};
 
 pub fn main() -> iced::Result {
     iced::program("Exit - Iced", Exit::update, Exit::view).run()
@@ -46,12 +46,6 @@ impl Exit {
         .spacing(10)
         .align_items(Alignment::Center);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .padding(20)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).padding(20).into()
     }
 }
diff --git a/examples/ferris/src/main.rs b/examples/ferris/src/main.rs
index b7536740..13d746dd 100644
--- a/examples/ferris/src/main.rs
+++ b/examples/ferris/src/main.rs
@@ -1,6 +1,6 @@
 use iced::time::Instant;
 use iced::widget::{
-    checkbox, column, container, image, pick_list, row, slider, text,
+    center, checkbox, column, container, image, pick_list, row, slider, text,
 };
 use iced::window;
 use iced::{
@@ -87,28 +87,22 @@ impl Image {
     }
 
     fn view(&self) -> Element<Message> {
-        let i_am_ferris = container(
-            column![
-                "Hello!",
-                Element::from(
-                    image(format!(
-                        "{}/../tour/images/ferris.png",
-                        env!("CARGO_MANIFEST_DIR")
-                    ))
-                    .width(self.width)
-                    .content_fit(self.content_fit)
-                    .rotation(self.rotation)
-                )
-                .explain(Color::WHITE),
-                "I am Ferris!"
-            ]
-            .spacing(20)
-            .align_items(Alignment::Center),
-        )
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y();
+        let i_am_ferris = column![
+            "Hello!",
+            Element::from(
+                image(format!(
+                    "{}/../tour/images/ferris.png",
+                    env!("CARGO_MANIFEST_DIR")
+                ))
+                .width(self.width)
+                .content_fit(self.content_fit)
+                .rotation(self.rotation)
+            )
+            .explain(Color::WHITE),
+            "I am Ferris!"
+        ]
+        .spacing(20)
+        .align_items(Alignment::Center);
 
         let sizing = row![
             pick_list(
@@ -126,13 +120,14 @@ impl Image {
             column![
                 slider(100.0..=500.0, self.width, Message::WidthChanged),
                 text(format!("Width: {}px", self.width))
-                    .size(14)
+                    .size(12)
                     .line_height(1.0)
             ]
-            .spacing(5)
+            .spacing(2)
             .align_items(Alignment::Center)
         ]
-        .spacing(10);
+        .spacing(10)
+        .align_items(Alignment::End);
 
         let rotation = row![
             pick_list(
@@ -144,30 +139,34 @@ impl Image {
                 Message::RotationStrategyChanged,
             )
             .width(Length::Fill),
-            row![
-                column![
+            column![
+                row![
                     slider(
                         Degrees::RANGE,
                         self.rotation.degrees(),
                         Message::RotationChanged
                     ),
-                    text(format!(
-                        "Rotation: {:.0}°",
-                        f32::from(self.rotation.degrees())
-                    ))
-                    .size(14)
-                    .line_height(1.0)
+                    checkbox("Spin!", self.spin)
+                        .text_size(12)
+                        .on_toggle(Message::SpinToggled)
+                        .size(12)
                 ]
-                .spacing(5)
+                .spacing(10)
                 .align_items(Alignment::Center),
-                checkbox("Spin!", self.spin).on_toggle(Message::SpinToggled)
+                text(format!(
+                    "Rotation: {:.0}°",
+                    f32::from(self.rotation.degrees())
+                ))
+                .size(12)
+                .line_height(1.0)
             ]
-            .spacing(5)
+            .spacing(2)
             .align_items(Alignment::Center)
         ]
-        .spacing(10);
+        .spacing(10)
+        .align_items(Alignment::End);
 
-        container(column![i_am_ferris, sizing, rotation].spacing(10))
+        container(column![center(i_am_ferris), sizing, rotation].spacing(10))
             .padding(10)
             .into()
     }
diff --git a/examples/geometry/src/main.rs b/examples/geometry/src/main.rs
index 31b8a4ce..bf7801a9 100644
--- a/examples/geometry/src/main.rs
+++ b/examples/geometry/src/main.rs
@@ -153,7 +153,7 @@ mod rainbow {
 }
 
 use iced::widget::{column, container, scrollable};
-use iced::{Element, Length};
+use iced::Element;
 use rainbow::rainbow;
 
 pub fn main() -> iced::Result {
@@ -176,12 +176,7 @@ fn view(_state: &()) -> Element<'_, ()> {
     .spacing(20)
     .max_width(500);
 
-    let scrollable =
-        scrollable(container(content).width(Length::Fill).center_x());
+    let scrollable = scrollable(container(content).center_x());
 
-    container(scrollable)
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_y()
-        .into()
+    container(scrollable).center_y().into()
 }
diff --git a/examples/layout/src/main.rs b/examples/layout/src/main.rs
index 66d79091..5f14c03b 100644
--- a/examples/layout/src/main.rs
+++ b/examples/layout/src/main.rs
@@ -1,8 +1,8 @@
 use iced::keyboard;
 use iced::mouse;
 use iced::widget::{
-    button, canvas, checkbox, column, container, horizontal_space, pick_list,
-    row, scrollable, text,
+    button, canvas, center, checkbox, column, container, horizontal_space,
+    pick_list, row, scrollable, text,
 };
 use iced::{
     color, Alignment, Element, Font, Length, Point, Rectangle, Renderer,
@@ -76,7 +76,7 @@ impl Layout {
         .spacing(20)
         .align_items(Alignment::Center);
 
-        let example = container(if self.explain {
+        let example = center(if self.explain {
             self.example.view().explain(color!(0x0000ff))
         } else {
             self.example.view()
@@ -87,11 +87,7 @@ impl Layout {
             container::Style::default()
                 .with_border(palette.background.strong.color, 4.0)
         })
-        .padding(4)
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y();
+        .padding(4);
 
         let controls = row([
             (!self.example.is_first()).then_some(
@@ -195,12 +191,7 @@ impl Default for Example {
 }
 
 fn centered<'a>() -> Element<'a, Message> {
-    container(text("I am centered!").size(50))
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y()
-        .into()
+    center(text("I am centered!").size(50)).into()
 }
 
 fn column_<'a>() -> Element<'a, Message> {
@@ -260,7 +251,6 @@ fn application<'a>() -> Element<'a, Message> {
             .align_items(Alignment::Center),
     )
     .style(container::rounded_box)
-    .height(Length::Fill)
     .center_y();
 
     let content = container(
diff --git a/examples/loading_spinners/src/main.rs b/examples/loading_spinners/src/main.rs
index eaa4d57e..e8d67ab5 100644
--- a/examples/loading_spinners/src/main.rs
+++ b/examples/loading_spinners/src/main.rs
@@ -1,5 +1,5 @@
-use iced::widget::{column, container, row, slider, text};
-use iced::{Element, Length};
+use iced::widget::{center, column, row, slider, text};
+use iced::Element;
 
 use std::time::Duration;
 
@@ -73,7 +73,7 @@ impl LoadingSpinners {
         })
         .spacing(20);
 
-        container(
+        center(
             column.push(
                 row![
                     text("Cycle duration:"),
@@ -87,10 +87,6 @@ impl LoadingSpinners {
                 .spacing(20.0),
             ),
         )
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y()
         .into()
     }
 }
diff --git a/examples/loupe/src/main.rs b/examples/loupe/src/main.rs
index 42b7f471..c4d3b449 100644
--- a/examples/loupe/src/main.rs
+++ b/examples/loupe/src/main.rs
@@ -1,5 +1,5 @@
-use iced::widget::{button, column, container, text};
-use iced::{Alignment, Element, Length};
+use iced::widget::{button, center, column, text};
+use iced::{Alignment, Element};
 
 use loupe::loupe;
 
@@ -31,7 +31,7 @@ impl Loupe {
     }
 
     fn view(&self) -> Element<Message> {
-        container(loupe(
+        center(loupe(
             3.0,
             column![
                 button("Increment").on_press(Message::Increment),
@@ -41,10 +41,6 @@ impl Loupe {
             .padding(20)
             .align_items(Alignment::Center),
         ))
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .center_x()
-        .center_y()
         .into()
     }
 }
diff --git a/examples/modal/src/main.rs b/examples/modal/src/main.rs
index a345924d..a012c310 100644
--- a/examples/modal/src/main.rs
+++ b/examples/modal/src/main.rs
@@ -2,8 +2,8 @@ use iced::event::{self, Event};
 use iced::keyboard;
 use iced::keyboard::key;
 use iced::widget::{
-    self, button, column, container, horizontal_space, mouse_area, opaque,
-    pick_list, row, stack, text, text_input,
+    self, button, center, column, container, horizontal_space, mouse_area,
+    opaque, pick_list, row, stack, text, text_input,
 };
 use iced::{Alignment, Color, Command, Element, Length, Subscription};
 
@@ -98,13 +98,7 @@ impl App {
                 row![text("Top Left"), horizontal_space(), text("Top Right")]
                     .align_items(Alignment::Start)
                     .height(Length::Fill),
-                container(
-                    button(text("Show Modal")).on_press(Message::ShowModal)
-                )
-                .center_x()
-                .center_y()
-                .width(Length::Fill)
-                .height(Length::Fill),
+                center(button(text("Show Modal")).on_press(Message::ShowModal)),
                 row![
                     text("Bottom Left"),
                     horizontal_space(),
@@ -115,9 +109,7 @@ impl App {
             ]
             .height(Length::Fill),
         )
-        .padding(10)
-        .width(Length::Fill)
-        .height(Length::Fill);
+        .padding(10);
 
         if self.show_modal {
             let signup = container(
@@ -210,25 +202,18 @@ where
 {
     stack![
         base.into(),
-        mouse_area(
-            container(opaque(content))
-                .width(Length::Fill)
-                .height(Length::Fill)
-                .center_x()
-                .center_y()
-                .style(|_theme| {
-                    container::Style {
-                        background: Some(
-                            Color {
-                                a: 0.8,
-                                ..Color::BLACK
-                            }
-                            .into(),
-                        ),
-                        ..container::Style::default()
+        mouse_area(center(opaque(content)).style(|_theme| {
+            container::Style {
+                background: Some(
+                    Color {
+                        a: 0.8,
+                        ..Color::BLACK
                     }
-                })
-        )
+                    .into(),
+                ),
+                ..container::Style::default()
+            }
+        }))
         .on_press(on_blur)
     ]
     .into()
diff --git a/examples/multi_window/src/main.rs b/examples/multi_window/src/main.rs
index 5a5e70c1..74339e0c 100644
--- a/examples/multi_window/src/main.rs
+++ b/examples/multi_window/src/main.rs
@@ -1,7 +1,9 @@
 use iced::event;
 use iced::executor;
 use iced::multi_window::{self, Application};
-use iced::widget::{button, column, container, scrollable, text, text_input};
+use iced::widget::{
+    button, center, column, container, scrollable, text, text_input,
+};
 use iced::window;
 use iced::{
     Alignment, Command, Element, Length, Point, Settings, Subscription, Theme,
@@ -128,12 +130,7 @@ impl multi_window::Application for Example {
     fn view(&self, window: window::Id) -> Element<Message> {
         let content = self.windows.get(&window).unwrap().view(window);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 
     fn theme(&self, window: window::Id) -> Self::Theme {
@@ -210,6 +207,6 @@ impl Window {
                 .align_items(Alignment::Center),
         );
 
-        container(content).width(200).center_x().into()
+        container(content).center_x().width(200).into()
     }
 }
diff --git a/examples/pane_grid/src/main.rs b/examples/pane_grid/src/main.rs
index 17112785..e74ea1ee 100644
--- a/examples/pane_grid/src/main.rs
+++ b/examples/pane_grid/src/main.rs
@@ -291,12 +291,7 @@ fn view_content<'a>(
     .spacing(10)
     .align_items(Alignment::Center);
 
-    container(scrollable(content))
-        .width(Length::Fill)
-        .height(Length::Fill)
-        .padding(5)
-        .center_y()
-        .into()
+    container(scrollable(content)).center_y().padding(5).into()
 }
 
 fn view_controls<'a>(
diff --git a/examples/pokedex/src/main.rs b/examples/pokedex/src/main.rs
index 35f23236..be20094d 100644
--- a/examples/pokedex/src/main.rs
+++ b/examples/pokedex/src/main.rs
@@ -1,5 +1,5 @@
 use iced::futures;
-use iced::widget::{self, column, container, image, row, text};
+use iced::widget::{self, center, column, image, row, text};
 use iced::{Alignment, Command, Element, Length};
 
 pub fn main() -> iced::Result {
@@ -83,12 +83,7 @@ impl Pokedex {
             .align_items(Alignment::End),
         };
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 }
 
diff --git a/examples/qr_code/src/main.rs b/examples/qr_code/src/main.rs
index b93adf04..c6a90458 100644
--- a/examples/qr_code/src/main.rs
+++ b/examples/qr_code/src/main.rs
@@ -1,7 +1,5 @@
-use iced::widget::{
-    column, container, pick_list, qr_code, row, text, text_input,
-};
-use iced::{Alignment, Element, Length, Theme};
+use iced::widget::{center, column, pick_list, qr_code, row, text, text_input};
+use iced::{Alignment, Element, Theme};
 
 pub fn main() -> iced::Result {
     iced::program(
@@ -72,13 +70,7 @@ impl QRGenerator {
             .spacing(20)
             .align_items(Alignment::Center);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .padding(20)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).padding(20).into()
     }
 
     fn theme(&self) -> Theme {
diff --git a/examples/screenshot/src/main.rs b/examples/screenshot/src/main.rs
index 5c175ccc..82495a1a 100644
--- a/examples/screenshot/src/main.rs
+++ b/examples/screenshot/src/main.rs
@@ -123,12 +123,10 @@ impl Example {
         };
 
         let image = container(image)
+            .center_y()
             .padding(10)
             .style(container::rounded_box)
-            .width(Length::FillPortion(2))
-            .height(Length::Fill)
-            .center_x()
-            .center_y();
+            .width(Length::FillPortion(2));
 
         let crop_origin_controls = row![
             text("X:")
@@ -213,12 +211,7 @@ impl Example {
             .spacing(40)
         };
 
-        let side_content = container(controls)
-            .align_x(alignment::Horizontal::Center)
-            .width(Length::FillPortion(1))
-            .height(Length::Fill)
-            .center_y()
-            .center_x();
+        let side_content = container(controls).center_y();
 
         let content = row![side_content, image]
             .spacing(10)
@@ -226,13 +219,7 @@ impl Example {
             .height(Length::Fill)
             .align_items(Alignment::Center);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .padding(10)
-            .center_x()
-            .center_y()
-            .into()
+        container(content).padding(10).into()
     }
 
     fn subscription(&self) -> Subscription<Message> {
diff --git a/examples/scrollable/src/main.rs b/examples/scrollable/src/main.rs
index c02e754b..bbb6497f 100644
--- a/examples/scrollable/src/main.rs
+++ b/examples/scrollable/src/main.rs
@@ -327,7 +327,7 @@ impl ScrollableDemo {
                 .spacing(10)
                 .into();
 
-        container(content).padding(20).center_x().center_y().into()
+        container(content).padding(20).into()
     }
 
     fn theme(&self) -> Theme {
diff --git a/examples/slider/src/main.rs b/examples/slider/src/main.rs
index b3a47614..5ffdc9c6 100644
--- a/examples/slider/src/main.rs
+++ b/examples/slider/src/main.rs
@@ -1,5 +1,5 @@
-use iced::widget::{column, container, slider, text, vertical_slider};
-use iced::{Element, Length};
+use iced::widget::{center, column, container, slider, text, vertical_slider};
+use iced::Element;
 
 pub fn main() -> iced::Result {
     iced::run("Slider - Iced", Slider::update, Slider::view)
@@ -54,18 +54,14 @@ impl Slider {
 
         let text = text(self.value);
 
-        container(
+        center(
             column![
-                container(v_slider).width(Length::Fill).center_x(),
-                container(h_slider).width(Length::Fill).center_x(),
-                container(text).width(Length::Fill).center_x(),
+                container(v_slider).center_x(),
+                container(h_slider).center_x(),
+                container(text).center_x()
             ]
             .spacing(25),
         )
-        .height(Length::Fill)
-        .width(Length::Fill)
-        .center_x()
-        .center_y()
         .into()
     }
 }
diff --git a/examples/stopwatch/src/main.rs b/examples/stopwatch/src/main.rs
index b9eb19cf..bbe9d0ff 100644
--- a/examples/stopwatch/src/main.rs
+++ b/examples/stopwatch/src/main.rs
@@ -1,8 +1,8 @@
 use iced::alignment;
 use iced::keyboard;
 use iced::time;
-use iced::widget::{button, column, container, row, text};
-use iced::{Alignment, Element, Length, Subscription, Theme};
+use iced::widget::{button, center, column, row, text};
+use iced::{Alignment, Element, Subscription, Theme};
 
 use std::time::{Duration, Instant};
 
@@ -128,12 +128,7 @@ impl Stopwatch {
             .align_items(Alignment::Center)
             .spacing(20);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 
     fn theme(&self) -> Theme {
diff --git a/examples/styling/src/main.rs b/examples/styling/src/main.rs
index 73268da0..57e8f47e 100644
--- a/examples/styling/src/main.rs
+++ b/examples/styling/src/main.rs
@@ -1,7 +1,7 @@
 use iced::widget::{
-    button, checkbox, column, container, horizontal_rule, pick_list,
-    progress_bar, row, scrollable, slider, text, text_input, toggler,
-    vertical_rule, vertical_space,
+    button, center, checkbox, column, horizontal_rule, pick_list, progress_bar,
+    row, scrollable, slider, text, text_input, toggler, vertical_rule,
+    vertical_space,
 };
 use iced::{Alignment, Element, Length, Theme};
 
@@ -106,12 +106,7 @@ impl Styling {
         .padding(20)
         .max_width(600);
 
-        container(content)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content).into()
     }
 
     fn theme(&self) -> Theme {
diff --git a/examples/svg/src/main.rs b/examples/svg/src/main.rs
index 0dcf9bc1..45b46716 100644
--- a/examples/svg/src/main.rs
+++ b/examples/svg/src/main.rs
@@ -1,4 +1,4 @@
-use iced::widget::{checkbox, column, container, svg};
+use iced::widget::{center, checkbox, column, container, svg};
 use iced::{color, Element, Length};
 
 pub fn main() -> iced::Result {
@@ -44,19 +44,12 @@ impl Tiger {
             checkbox("Apply a color filter", self.apply_color_filter)
                 .on_toggle(Message::ToggleColorFilter);
 
-        container(
-            column![
-                svg,
-                container(apply_color_filter).width(Length::Fill).center_x()
-            ]
-            .spacing(20)
-            .height(Length::Fill),
+        center(
+            column![svg, container(apply_color_filter).center_x()]
+                .spacing(20)
+                .height(Length::Fill),
         )
-        .width(Length::Fill)
-        .height(Length::Fill)
         .padding(20)
-        .center_x()
-        .center_y()
         .into()
     }
 }
diff --git a/examples/system_information/src/main.rs b/examples/system_information/src/main.rs
index a6ac27a6..89a8383a 100644
--- a/examples/system_information/src/main.rs
+++ b/examples/system_information/src/main.rs
@@ -1,5 +1,5 @@
 use iced::widget::{button, column, container, text};
-use iced::{system, Command, Element, Length};
+use iced::{system, Command, Element};
 
 pub fn main() -> iced::Result {
     iced::program("System Information - Iced", Example::update, Example::view)
@@ -136,11 +136,6 @@ impl Example {
             }
         };
 
-        container(content)
-            .center_x()
-            .center_y()
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .into()
+        container(content).center().into()
     }
 }
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)
diff --git a/examples/todos/src/main.rs b/examples/todos/src/main.rs
index 7768c1d5..8119bc91 100644
--- a/examples/todos/src/main.rs
+++ b/examples/todos/src/main.rs
@@ -1,8 +1,8 @@
 use iced::alignment::{self, Alignment};
 use iced::keyboard;
 use iced::widget::{
-    self, button, checkbox, column, container, keyed_column, row, scrollable,
-    text, text_input, Text,
+    self, button, center, checkbox, column, container, keyed_column, row,
+    scrollable, text, text_input, Text,
 };
 use iced::window;
 use iced::{Command, Element, Font, Length, Subscription};
@@ -238,7 +238,7 @@ impl Todos {
                     .spacing(20)
                     .max_width(800);
 
-                scrollable(container(content).padding(40).center_x()).into()
+                scrollable(container(content).center_x().padding(40)).into()
             }
         }
     }
@@ -435,19 +435,16 @@ impl Filter {
 }
 
 fn loading_message<'a>() -> Element<'a, Message> {
-    container(
+    center(
         text("Loading...")
             .horizontal_alignment(alignment::Horizontal::Center)
             .size(50),
     )
-    .width(Length::Fill)
-    .height(Length::Fill)
-    .center_y()
     .into()
 }
 
 fn empty_message(message: &str) -> Element<'_, Message> {
-    container(
+    center(
         text(message)
             .width(Length::Fill)
             .size(25)
@@ -455,7 +452,6 @@ fn empty_message(message: &str) -> Element<'_, Message> {
             .color([0.7, 0.7, 0.7]),
     )
     .height(200)
-    .center_y()
     .into()
 }
 
diff --git a/examples/tooltip/src/main.rs b/examples/tooltip/src/main.rs
index b6603068..f48f688a 100644
--- a/examples/tooltip/src/main.rs
+++ b/examples/tooltip/src/main.rs
@@ -1,6 +1,6 @@
 use iced::widget::tooltip::Position;
-use iced::widget::{button, container, tooltip};
-use iced::{Element, Length};
+use iced::widget::{button, center, container, tooltip};
+use iced::Element;
 
 pub fn main() -> iced::Result {
     iced::run("Tooltip - Iced", Tooltip::update, Tooltip::view)
@@ -43,12 +43,7 @@ impl Tooltip {
         .gap(10)
         .style(container::rounded_box);
 
-        container(tooltip)
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(tooltip).into()
     }
 }
 
diff --git a/examples/tour/src/main.rs b/examples/tour/src/main.rs
index e3a2ca87..bae6490d 100644
--- a/examples/tour/src/main.rs
+++ b/examples/tour/src/main.rs
@@ -76,11 +76,10 @@ impl Tour {
             } else {
                 content
             })
-            .width(Length::Fill)
             .center_x(),
         );
 
-        container(scrollable).height(Length::Fill).center_y().into()
+        container(scrollable).center_y().into()
     }
 }
 
@@ -670,7 +669,6 @@ fn ferris<'a>(
         .filter_method(filter_method)
         .width(width),
     )
-    .width(Length::Fill)
     .center_x()
 }
 
diff --git a/examples/url_handler/src/main.rs b/examples/url_handler/src/main.rs
index df705b6c..800a188b 100644
--- a/examples/url_handler/src/main.rs
+++ b/examples/url_handler/src/main.rs
@@ -1,6 +1,6 @@
 use iced::event::{self, Event};
-use iced::widget::{container, text};
-use iced::{Element, Length, Subscription};
+use iced::widget::{center, text};
+use iced::{Element, Subscription};
 
 pub fn main() -> iced::Result {
     iced::program("URL Handler - Iced", App::update, App::view)
@@ -44,11 +44,6 @@ impl App {
             None => text("No URL received yet!"),
         };
 
-        container(content.size(48))
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
-            .into()
+        center(content.size(48)).into()
     }
 }
diff --git a/examples/websocket/src/main.rs b/examples/websocket/src/main.rs
index b479fe89..e7ececf7 100644
--- a/examples/websocket/src/main.rs
+++ b/examples/websocket/src/main.rs
@@ -1,9 +1,7 @@
 mod echo;
 
 use iced::alignment::{self, Alignment};
-use iced::widget::{
-    button, column, container, row, scrollable, text, text_input,
-};
+use iced::widget::{button, center, column, row, scrollable, text, text_input};
 use iced::{color, Command, Element, Length, Subscription};
 use once_cell::sync::Lazy;
 
@@ -85,14 +83,10 @@ impl WebSocket {
 
     fn view(&self) -> Element<Message> {
         let message_log: Element<_> = if self.messages.is_empty() {
-            container(
+            center(
                 text("Your messages will appear here...")
                     .color(color!(0x888888)),
             )
-            .width(Length::Fill)
-            .height(Length::Fill)
-            .center_x()
-            .center_y()
             .into()
         } else {
             scrollable(