Merge branch 'master' into update-winit

36 files changed, 498 insertions, 447 deletions

diff --git a/widget/src/button.rs b/widget/src/button.rs
index 384a3156..0ebb8dcc 100644
--- a/widget/src/button.rs
+++ b/widget/src/button.rs
@@ -10,8 +10,8 @@ use crate::core::touch;
 use crate::core::widget::tree::{self, Tree};
 use crate::core::widget::Operation;
 use crate::core::{
-    Background, Clipboard, Color, Element, Layout, Length, Padding, Point,
-    Rectangle, Shell, Vector, Widget,
+    Background, Clipboard, Color, Element, Layout, Length, Padding, Rectangle,
+    Shell, Size, Vector, Widget,
 };
 
 pub use iced_style::button::{Appearance, StyleSheet};
@@ -71,11 +71,14 @@ where
 {
     /// Creates a new [`Button`] with the given content.
     pub fn new(content: impl Into<Element<'a, Message, Renderer>>) -> Self {
+        let content = content.into();
+        let size = content.as_widget().size_hint();
+
         Button {
-            content: content.into(),
+            content,
             on_press: None,
-            width: Length::Shrink,
-            height: Length::Shrink,
+            width: size.width.fluid(),
+            height: size.height.fluid(),
             padding: Padding::new(5.0),
             style: <Renderer::Theme as StyleSheet>::Style::default(),
         }
@@ -149,12 +152,11 @@ where
         tree.diff_children(std::slice::from_ref(&self.content));
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -431,15 +433,7 @@ pub fn layout(
     padding: Padding,
     layout_content: impl FnOnce(&layout::Limits) -> layout::Node,
 ) -> layout::Node {
-    let limits = limits.width(width).height(height);
-
-    let mut content = layout_content(&limits.pad(padding));
-    let padding = padding.fit(content.size(), limits.max());
-    let size = limits.pad(padding).resolve(content.size()).pad(padding);
-
-    content.move_to(Point::new(padding.left, padding.top));
-
-    layout::Node::with_children(size, vec![content])
+    layout::padded(limits, width, height, padding, layout_content)
 }
 
 /// Returns the [`mouse::Interaction`] of a [`Button`].
diff --git a/widget/src/canvas.rs b/widget/src/canvas.rs
index 390f4d92..4e42a671 100644
--- a/widget/src/canvas.rs
+++ b/widget/src/canvas.rs
@@ -14,8 +14,9 @@ use crate::core::layout::{self, Layout};
 use crate::core::mouse;
 use crate::core::renderer;
 use crate::core::widget::tree::{self, Tree};
-use crate::core::{Clipboard, Element, Shell, Widget};
-use crate::core::{Length, Rectangle, Size, Vector};
+use crate::core::{
+    Clipboard, Element, Length, Rectangle, Shell, Size, Vector, Widget,
+};
 use crate::graphics::geometry;
 
 use std::marker::PhantomData;
@@ -119,12 +120,11 @@ where
         tree::State::new(P::State::default())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -133,10 +133,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-        let size = limits.resolve(Size::ZERO);
-
-        layout::Node::new(size)
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn on_event(
diff --git a/widget/src/checkbox.rs b/widget/src/checkbox.rs
index a0d9559b..0353b3ad 100644
--- a/widget/src/checkbox.rs
+++ b/widget/src/checkbox.rs
@@ -174,12 +174,11 @@ where
         tree::State::new(widget::text::State::<Renderer::Paragraph>::default())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/column.rs b/widget/src/column.rs
index abb522be..d6eea84b 100644
--- a/widget/src/column.rs
+++ b/widget/src/column.rs
@@ -7,7 +7,7 @@ use crate::core::renderer;
 use crate::core::widget::{Operation, Tree};
 use crate::core::{
     Alignment, Clipboard, Element, Layout, Length, Padding, Pixels, Rectangle,
-    Shell, Widget,
+    Shell, Size, Widget,
 };
 
 /// A container that distributes its contents vertically.
@@ -22,16 +22,12 @@ pub struct Column<'a, Message, Renderer = crate::Renderer> {
     children: Vec<Element<'a, Message, Renderer>>,
 }
 
-impl<'a, Message, Renderer> Column<'a, Message, Renderer> {
+impl<'a, Message, Renderer> Column<'a, Message, Renderer>
+where
+    Renderer: crate::core::Renderer,
+{
     /// Creates an empty [`Column`].
     pub fn new() -> Self {
-        Self::with_children(Vec::new())
-    }
-
-    /// Creates a [`Column`] with the given elements.
-    pub fn with_children(
-        children: Vec<Element<'a, Message, Renderer>>,
-    ) -> Self {
         Column {
             spacing: 0.0,
             padding: Padding::ZERO,
@@ -39,10 +35,17 @@ impl<'a, Message, Renderer> Column<'a, Message, Renderer> {
             height: Length::Shrink,
             max_width: f32::INFINITY,
             align_items: Alignment::Start,
-            children,
+            children: Vec::new(),
         }
     }
 
+    /// Creates a [`Column`] with the given elements.
+    pub fn with_children(
+        children: impl IntoIterator<Item = Element<'a, Message, Renderer>>,
+    ) -> Self {
+        children.into_iter().fold(Self::new(), Self::push)
+    }
+
     /// Sets the vertical spacing _between_ elements.
     ///
     /// Custom margins per element do not exist in iced. You should use this
@@ -88,12 +91,26 @@ impl<'a, Message, Renderer> Column<'a, Message, Renderer> {
         mut self,
         child: impl Into<Element<'a, Message, Renderer>>,
     ) -> Self {
-        self.children.push(child.into());
+        let child = child.into();
+        let size = child.as_widget().size_hint();
+
+        if size.width.is_fill() {
+            self.width = Length::Fill;
+        }
+
+        if size.height.is_fill() {
+            self.height = Length::Fill;
+        }
+
+        self.children.push(child);
         self
     }
 }
 
-impl<'a, Message, Renderer> Default for Column<'a, Message, Renderer> {
+impl<'a, Message, Renderer> Default for Column<'a, Message, Renderer>
+where
+    Renderer: crate::core::Renderer,
+{
     fn default() -> Self {
         Self::new()
     }
@@ -112,12 +129,11 @@ where
         tree.diff_children(&self.children);
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -126,15 +142,14 @@ where
         renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits
-            .max_width(self.max_width)
-            .width(self.width)
-            .height(self.height);
+        let limits = limits.max_width(self.max_width);
 
         layout::flex::resolve(
             layout::flex::Axis::Vertical,
             renderer,
             &limits,
+            self.width,
+            self.height,
             self.padding,
             self.spacing,
             self.align_items,
diff --git a/widget/src/combo_box.rs b/widget/src/combo_box.rs
index 31ec27fc..1b2fa947 100644
--- a/widget/src/combo_box.rs
+++ b/widget/src/combo_box.rs
@@ -8,7 +8,9 @@ use crate::core::renderer;
 use crate::core::text;
 use crate::core::time::Instant;
 use crate::core::widget::{self, Widget};
-use crate::core::{Clipboard, Element, Length, Padding, Rectangle, Shell};
+use crate::core::{
+    Clipboard, Element, Length, Padding, Rectangle, Shell, Size,
+};
 use crate::overlay::menu;
 use crate::text::LineHeight;
 use crate::{container, scrollable, text_input, TextInput};
@@ -297,12 +299,8 @@ where
         + scrollable::StyleSheet
         + menu::StyleSheet,
 {
-    fn width(&self) -> Length {
-        Widget::<TextInputEvent, Renderer>::width(&self.text_input)
-    }
-
-    fn height(&self) -> Length {
-        Widget::<TextInputEvent, Renderer>::height(&self.text_input)
+    fn size(&self) -> Size<Length> {
+        Widget::<TextInputEvent, Renderer>::size(&self.text_input)
     }
 
     fn layout(
diff --git a/widget/src/container.rs b/widget/src/container.rs
index 5dd7705b..cffb0458 100644
--- a/widget/src/container.rs
+++ b/widget/src/container.rs
@@ -46,17 +46,20 @@ where
     where
         T: Into<Element<'a, Message, Renderer>>,
     {
+        let content = content.into();
+        let size = content.as_widget().size_hint();
+
         Container {
             id: None,
             padding: Padding::ZERO,
-            width: Length::Shrink,
-            height: Length::Shrink,
+            width: size.width.fluid(),
+            height: size.height.fluid(),
             max_width: f32::INFINITY,
             max_height: f32::INFINITY,
             horizontal_alignment: alignment::Horizontal::Left,
             vertical_alignment: alignment::Vertical::Top,
             style: Default::default(),
-            content: content.into(),
+            content,
         }
     }
 
@@ -152,12 +155,11 @@ where
         self.content.as_widget().diff(tree);
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -311,25 +313,20 @@ pub fn layout(
     vertical_alignment: alignment::Vertical,
     layout_content: impl FnOnce(&layout::Limits) -> layout::Node,
 ) -> layout::Node {
-    let limits = limits
-        .loose()
-        .max_width(max_width)
-        .max_height(max_height)
-        .width(width)
-        .height(height);
-
-    let mut content = layout_content(&limits.pad(padding).loose());
-    let padding = padding.fit(content.size(), limits.max());
-    let size = limits.pad(padding).resolve(content.size());
-
-    content.move_to(Point::new(padding.left, padding.top));
-    content.align(
-        Alignment::from(horizontal_alignment),
-        Alignment::from(vertical_alignment),
-        size,
-    );
-
-    layout::Node::with_children(size.pad(padding), vec![content])
+    layout::positioned(
+        &limits.max_width(max_width).max_height(max_height),
+        width,
+        height,
+        padding,
+        |limits| layout_content(&limits.loose()),
+        |content, size| {
+            content.align(
+                Alignment::from(horizontal_alignment),
+                Alignment::from(vertical_alignment),
+                size,
+            )
+        },
+    )
 }
 
 /// Draws the background of a [`Container`] given its [`Appearance`] and its `bounds`.
diff --git a/widget/src/helpers.rs b/widget/src/helpers.rs
index 115198fb..498dd76c 100644
--- a/widget/src/helpers.rs
+++ b/widget/src/helpers.rs
@@ -34,7 +34,7 @@ macro_rules! column {
         $crate::Column::new()
     );
     ($($x:expr),+ $(,)?) => (
-        $crate::Column::with_children(vec![$($crate::core::Element::from($x)),+])
+        $crate::Column::with_children([$($crate::core::Element::from($x)),+])
     );
 }
 
@@ -47,7 +47,7 @@ macro_rules! row {
         $crate::Row::new()
     );
     ($($x:expr),+ $(,)?) => (
-        $crate::Row::with_children(vec![$($crate::core::Element::from($x)),+])
+        $crate::Row::with_children([$($crate::core::Element::from($x)),+])
     );
 }
 
@@ -65,9 +65,12 @@ where
 }
 
 /// Creates a new [`Column`] with the given children.
-pub fn column<Message, Renderer>(
-    children: Vec<Element<'_, Message, Renderer>>,
-) -> Column<'_, Message, Renderer> {
+pub fn column<'a, Message, Renderer>(
+    children: impl IntoIterator<Item = Element<'a, Message, Renderer>>,
+) -> Column<'a, Message, Renderer>
+where
+    Renderer: core::Renderer,
+{
     Column::with_children(children)
 }
 
@@ -77,6 +80,7 @@ pub fn keyed_column<'a, Key, Message, Renderer>(
 ) -> keyed::Column<'a, Key, Message, Renderer>
 where
     Key: Copy + PartialEq,
+    Renderer: core::Renderer,
 {
     keyed::Column::with_children(children)
 }
@@ -84,9 +88,12 @@ where
 /// Creates a new [`Row`] with the given children.
 ///
 /// [`Row`]: crate::Row
-pub fn row<Message, Renderer>(
-    children: Vec<Element<'_, Message, Renderer>>,
-) -> Row<'_, Message, Renderer> {
+pub fn row<'a, Message, Renderer>(
+    children: impl IntoIterator<Item = Element<'a, Message, Renderer>>,
+) -> Row<'a, Message, Renderer>
+where
+    Renderer: core::Renderer,
+{
     Row::with_children(children)
 }
 
@@ -264,7 +271,7 @@ pub fn pick_list<'a, Message, Renderer, T>(
     on_selected: impl Fn(T) -> Message + 'a,
 ) -> PickList<'a, T, Message, Renderer>
 where
-    T: ToString + Eq + 'static,
+    T: ToString + PartialEq + 'static,
     [T]: ToOwned<Owned = Vec<T>>,
     Renderer: core::text::Renderer,
     Renderer::Theme: pick_list::StyleSheet
diff --git a/widget/src/image.rs b/widget/src/image.rs
index 67699102..e906ac13 100644
--- a/widget/src/image.rs
+++ b/widget/src/image.rs
@@ -99,7 +99,7 @@ where
     };
 
     // The size to be available to the widget prior to `Shrink`ing
-    let raw_size = limits.width(width).height(height).resolve(image_size);
+    let raw_size = limits.resolve(width, height, image_size);
 
     // The uncropped size of the image when fit to the bounds above
     let full_size = content_fit.fit(image_size, raw_size);
@@ -164,12 +164,11 @@ where
     Renderer: image::Renderer<Handle = Handle>,
     Handle: Clone + Hash,
 {
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
diff --git a/widget/src/image/viewer.rs b/widget/src/image/viewer.rs
index 68015ba8..98080577 100644
--- a/widget/src/image/viewer.rs
+++ b/widget/src/image/viewer.rs
@@ -97,12 +97,11 @@ where
         tree::State::new(State::new())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -113,10 +112,11 @@ where
     ) -> layout::Node {
         let Size { width, height } = renderer.dimensions(&self.handle);
 
-        let mut size = limits
-            .width(self.width)
-            .height(self.height)
-            .resolve(Size::new(width as f32, height as f32));
+        let mut size = limits.resolve(
+            self.width,
+            self.height,
+            Size::new(width as f32, height as f32),
+        );
 
         let expansion_size = if height > width {
             self.width
diff --git a/widget/src/keyed/column.rs b/widget/src/keyed/column.rs
index 0ef82407..7f05a81e 100644
--- a/widget/src/keyed/column.rs
+++ b/widget/src/keyed/column.rs
@@ -8,7 +8,7 @@ use crate::core::widget::tree::{self, Tree};
 use crate::core::widget::Operation;
 use crate::core::{
     Alignment, Clipboard, Element, Layout, Length, Padding, Pixels, Rectangle,
-    Shell, Widget,
+    Shell, Size, Widget,
 };
 
 /// A container that distributes its contents vertically.
@@ -30,26 +30,10 @@ where
 impl<'a, Key, Message, Renderer> Column<'a, Key, Message, Renderer>
 where
     Key: Copy + PartialEq,
+    Renderer: crate::core::Renderer,
 {
     /// Creates an empty [`Column`].
     pub fn new() -> Self {
-        Self::with_children(Vec::new())
-    }
-
-    /// Creates a [`Column`] with the given elements.
-    pub fn with_children(
-        children: impl IntoIterator<Item = (Key, Element<'a, Message, Renderer>)>,
-    ) -> Self {
-        let (keys, children) = children.into_iter().fold(
-            (Vec::new(), Vec::new()),
-            |(mut keys, mut children), (key, child)| {
-                keys.push(key);
-                children.push(child);
-
-                (keys, children)
-            },
-        );
-
         Column {
             spacing: 0.0,
             padding: Padding::ZERO,
@@ -57,11 +41,20 @@ where
             height: Length::Shrink,
             max_width: f32::INFINITY,
             align_items: Alignment::Start,
-            keys,
-            children,
+            keys: Vec::new(),
+            children: Vec::new(),
         }
     }
 
+    /// Creates a [`Column`] with the given elements.
+    pub fn with_children(
+        children: impl IntoIterator<Item = (Key, Element<'a, Message, Renderer>)>,
+    ) -> Self {
+        children
+            .into_iter()
+            .fold(Self::new(), |column, (key, child)| column.push(key, child))
+    }
+
     /// Sets the vertical spacing _between_ elements.
     ///
     /// Custom margins per element do not exist in iced. You should use this
@@ -108,8 +101,19 @@ where
         key: Key,
         child: impl Into<Element<'a, Message, Renderer>>,
     ) -> Self {
+        let child = child.into();
+        let size = child.as_widget().size_hint();
+
+        if size.width.is_fill() {
+            self.width = Length::Fill;
+        }
+
+        if size.height.is_fill() {
+            self.height = Length::Fill;
+        }
+
         self.keys.push(key);
-        self.children.push(child.into());
+        self.children.push(child);
         self
     }
 }
@@ -117,6 +121,7 @@ where
 impl<'a, Key, Message, Renderer> Default for Column<'a, Key, Message, Renderer>
 where
     Key: Copy + PartialEq,
+    Renderer: crate::core::Renderer,
 {
     fn default() -> Self {
         Self::new()
@@ -173,12 +178,11 @@ where
         }
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -196,6 +200,8 @@ where
             layout::flex::Axis::Vertical,
             renderer,
             &limits,
+            self.width,
+            self.height,
             self.padding,
             self.spacing,
             self.align_items,
diff --git a/widget/src/lazy.rs b/widget/src/lazy.rs
index 167a055d..e9edbb4c 100644
--- a/widget/src/lazy.rs
+++ b/widget/src/lazy.rs
@@ -142,12 +142,15 @@ where
         }
     }
 
-    fn width(&self) -> Length {
-        self.with_element(|element| element.as_widget().width())
+    fn size(&self) -> Size<Length> {
+        self.with_element(|element| element.as_widget().size())
     }
 
-    fn height(&self) -> Length {
-        self.with_element(|element| element.as_widget().height())
+    fn size_hint(&self) -> Size<Length> {
+        Size {
+            width: Length::Shrink,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/lazy/component.rs b/widget/src/lazy/component.rs
index ad0c3823..3684e0c9 100644
--- a/widget/src/lazy/component.rs
+++ b/widget/src/lazy/component.rs
@@ -244,12 +244,15 @@ where
         self.rebuild_element_if_necessary();
     }
 
-    fn width(&self) -> Length {
-        self.with_element(|element| element.as_widget().width())
+    fn size(&self) -> Size<Length> {
+        self.with_element(|element| element.as_widget().size())
     }
 
-    fn height(&self) -> Length {
-        self.with_element(|element| element.as_widget().height())
+    fn size_hint(&self) -> Size<Length> {
+        Size {
+            width: Length::Shrink,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/lazy/helpers.rs b/widget/src/lazy/helpers.rs
index 8ca9cb86..5dc60d52 100644
--- a/widget/src/lazy/helpers.rs
+++ b/widget/src/lazy/helpers.rs
@@ -6,6 +6,7 @@ use std::hash::Hash;
 
 /// Creates a new [`Lazy`] widget with the given data `Dependency` and a
 /// closure that can turn this data into a widget tree.
+#[cfg(feature = "lazy")]
 pub fn lazy<'a, Message, Renderer, Dependency, View>(
     dependency: Dependency,
     view: impl Fn(&Dependency) -> View + 'a,
@@ -19,6 +20,7 @@ where
 
 /// Turns an implementor of [`Component`] into an [`Element`] that can be
 /// embedded in any application.
+#[cfg(feature = "lazy")]
 pub fn component<'a, C, Message, Renderer>(
     component: C,
 ) -> Element<'a, Message, Renderer>
@@ -37,6 +39,7 @@ where
 /// The `view` closure will be provided with the current [`Size`] of
 /// the [`Responsive`] widget and, therefore, can be used to build the
 /// contents of the widget in a responsive way.
+#[cfg(feature = "lazy")]
 pub fn responsive<'a, Message, Renderer>(
     f: impl Fn(Size) -> Element<'a, Message, Renderer> + 'a,
 ) -> Responsive<'a, Message, Renderer>
diff --git a/widget/src/lazy/responsive.rs b/widget/src/lazy/responsive.rs
index 86d37b6c..1df0866f 100644
--- a/widget/src/lazy/responsive.rs
+++ b/widget/src/lazy/responsive.rs
@@ -135,12 +135,11 @@ where
         })
     }
 
-    fn width(&self) -> Length {
-        Length::Fill
-    }
-
-    fn height(&self) -> Length {
-        Length::Fill
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: Length::Fill,
+            height: Length::Fill,
+        }
     }
 
     fn layout(
diff --git a/widget/src/mouse_area.rs b/widget/src/mouse_area.rs
index 3a5b01a3..87cac3a7 100644
--- a/widget/src/mouse_area.rs
+++ b/widget/src/mouse_area.rs
@@ -8,7 +8,7 @@ use crate::core::renderer;
 use crate::core::touch;
 use crate::core::widget::{tree, Operation, Tree};
 use crate::core::{
-    Clipboard, Element, Layout, Length, Rectangle, Shell, Widget,
+    Clipboard, Element, Layout, Length, Rectangle, Shell, Size, Widget,
 };
 
 /// Emit messages on mouse events.
@@ -110,12 +110,8 @@ where
         tree.diff_children(std::slice::from_ref(&self.content));
     }
 
-    fn width(&self) -> Length {
-        self.content.as_widget().width()
-    }
-
-    fn height(&self) -> Length {
-        self.content.as_widget().height()
+    fn size(&self) -> Size<Length> {
+        self.content.as_widget().size()
     }
 
     fn layout(
diff --git a/widget/src/overlay/menu.rs b/widget/src/overlay/menu.rs
index e45b44ae..f83eebea 100644
--- a/widget/src/overlay/menu.rs
+++ b/widget/src/overlay/menu.rs
@@ -254,15 +254,14 @@ where
         )
         .width(self.width);
 
-        let mut node = self.container.layout(self.state, renderer, &limits);
+        let node = self.container.layout(self.state, renderer, &limits);
+        let size = node.size();
 
         node.move_to(if space_below > space_above {
             position + Vector::new(0.0, self.target_height)
         } else {
-            position - Vector::new(0.0, node.size().height)
-        });
-
-        node
+            position - Vector::new(0.0, size.height)
+        })
     }
 
     fn on_event(
@@ -343,12 +342,11 @@ where
     Renderer: text::Renderer,
     Renderer::Theme: StyleSheet,
 {
-    fn width(&self) -> Length {
-        Length::Fill
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: Length::Fill,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
@@ -359,7 +357,6 @@ where
     ) -> layout::Node {
         use std::f32;
 
-        let limits = limits.width(Length::Fill).height(Length::Shrink);
         let text_size =
             self.text_size.unwrap_or_else(|| renderer.default_size());
 
@@ -372,7 +369,7 @@ where
                     * self.options.len() as f32,
             );
 
-            limits.resolve(intrinsic)
+            limits.resolve(Length::Fill, Length::Shrink, intrinsic)
         };
 
         layout::Node::new(size)
diff --git a/widget/src/pane_grid.rs b/widget/src/pane_grid.rs
index 2d25a543..cf1f0455 100644
--- a/widget/src/pane_grid.rs
+++ b/widget/src/pane_grid.rs
@@ -265,12 +265,11 @@ where
         }
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -490,8 +489,7 @@ pub fn layout<Renderer, T>(
         &layout::Limits,
     ) -> layout::Node,
 ) -> layout::Node {
-    let limits = limits.width(width).height(height);
-    let size = limits.resolve(Size::ZERO);
+    let size = limits.resolve(width, height, Size::ZERO);
 
     let regions = node.pane_regions(spacing, size);
     let children = contents
@@ -500,16 +498,14 @@ pub fn layout<Renderer, T>(
             let region = regions.get(&pane)?;
             let size = Size::new(region.width, region.height);
 
-            let mut node = layout_content(
+            let node = layout_content(
                 content,
                 tree,
                 renderer,
                 &layout::Limits::new(size, size),
             );
 
-            node.move_to(Point::new(region.x, region.y));
-
-            Some(node)
+            Some(node.move_to(Point::new(region.x, region.y)))
         })
         .collect();
 
@@ -531,6 +527,8 @@ pub fn update<'a, Message, T: Draggable>(
     on_drag: &Option<Box<dyn Fn(DragEvent) -> Message + 'a>>,
     on_resize: &Option<(f32, Box<dyn Fn(ResizeEvent) -> Message + 'a>)>,
 ) -> event::Status {
+    const DRAG_DEADBAND_DISTANCE: f32 = 10.0;
+
     let mut event_status = event::Status::Ignored;
 
     match event {
@@ -572,7 +570,6 @@ pub fn update<'a, Message, T: Draggable>(
                                 shell,
                                 contents,
                                 on_click,
-                                on_drag,
                             );
                         }
                     }
@@ -584,7 +581,6 @@ pub fn update<'a, Message, T: Draggable>(
                             shell,
                             contents,
                             on_click,
-                            on_drag,
                         );
                     }
                 }
@@ -637,7 +633,49 @@ pub fn update<'a, Message, T: Draggable>(
         }
         Event::Mouse(mouse::Event::CursorMoved { .. })
         | Event::Touch(touch::Event::FingerMoved { .. }) => {
-            if let Some((_, on_resize)) = on_resize {
+            if let Some((_, origin)) = action.clicked_pane() {
+                if let Some(on_drag) = &on_drag {
+                    let bounds = layout.bounds();
+
+                    if let Some(cursor_position) = cursor.position_over(bounds)
+                    {
+                        let mut clicked_region = contents
+                            .zip(layout.children())
+                            .filter(|(_, layout)| {
+                                layout.bounds().contains(cursor_position)
+                            });
+
+                        if let Some(((pane, content), layout)) =
+                            clicked_region.next()
+                        {
+                            if content
+                                .can_be_dragged_at(layout, cursor_position)
+                            {
+                                let pane_position = layout.position();
+
+                                let new_origin = cursor_position
+                                    - Vector::new(
+                                        pane_position.x,
+                                        pane_position.y,
+                                    );
+
+                                if new_origin.distance(origin)
+                                    > DRAG_DEADBAND_DISTANCE
+                                {
+                                    *action = state::Action::Dragging {
+                                        pane,
+                                        origin,
+                                    };
+
+                                    shell.publish(on_drag(DragEvent::Picked {
+                                        pane,
+                                    }));
+                                }
+                            }
+                        }
+                    }
+                }
+            } else if let Some((_, on_resize)) = on_resize {
                 if let Some((split, _)) = action.picked_split() {
                     let bounds = layout.bounds();
 
@@ -712,7 +750,6 @@ fn click_pane<'a, Message, T>(
     shell: &mut Shell<'_, Message>,
     contents: impl Iterator<Item = (Pane, T)>,
     on_click: &Option<Box<dyn Fn(Pane) -> Message + 'a>>,
-    on_drag: &Option<Box<dyn Fn(DragEvent) -> Message + 'a>>,
 ) where
     T: Draggable,
 {
@@ -720,23 +757,15 @@ fn click_pane<'a, Message, T>(
         .zip(layout.children())
         .filter(|(_, layout)| layout.bounds().contains(cursor_position));
 
-    if let Some(((pane, content), layout)) = clicked_region.next() {
+    if let Some(((pane, _), layout)) = clicked_region.next() {
         if let Some(on_click) = &on_click {
             shell.publish(on_click(pane));
         }
 
-        if let Some(on_drag) = &on_drag {
-            if content.can_be_dragged_at(layout, cursor_position) {
-                let pane_position = layout.position();
-
-                let origin = cursor_position
-                    - Vector::new(pane_position.x, pane_position.y);
-
-                *action = state::Action::Dragging { pane, origin };
-
-                shell.publish(on_drag(DragEvent::Picked { pane }));
-            }
-        }
+        let pane_position = layout.position();
+        let origin =
+            cursor_position - Vector::new(pane_position.x, pane_position.y);
+        *action = state::Action::Clicking { pane, origin };
     }
 }
 
@@ -749,7 +778,7 @@ pub fn mouse_interaction(
     spacing: f32,
     resize_leeway: Option<f32>,
 ) -> Option<mouse::Interaction> {
-    if action.picked_pane().is_some() {
+    if action.clicked_pane().is_some() || action.picked_pane().is_some() {
         return Some(mouse::Interaction::Grabbing);
     }
 
diff --git a/widget/src/pane_grid/content.rs b/widget/src/pane_grid/content.rs
index 826ea663..ee00f186 100644
--- a/widget/src/pane_grid/content.rs
+++ b/widget/src/pane_grid/content.rs
@@ -165,7 +165,7 @@ where
 
             let title_bar_size = title_bar_layout.size();
 
-            let mut body_layout = self.body.as_widget().layout(
+            let body_layout = self.body.as_widget().layout(
                 &mut tree.children[0],
                 renderer,
                 &layout::Limits::new(
@@ -177,11 +177,12 @@ where
                 ),
             );
 
-            body_layout.move_to(Point::new(0.0, title_bar_size.height));
-
             layout::Node::with_children(
                 max_size,
-                vec![title_bar_layout, body_layout],
+                vec![
+                    title_bar_layout,
+                    body_layout.move_to(Point::new(0.0, title_bar_size.height)),
+                ],
             )
         } else {
             self.body.as_widget().layout(
diff --git a/widget/src/pane_grid/state.rs b/widget/src/pane_grid/state.rs
index 481cd770..5d1fe254 100644
--- a/widget/src/pane_grid/state.rs
+++ b/widget/src/pane_grid/state.rs
@@ -403,6 +403,15 @@ pub enum Action {
     ///
     /// [`PaneGrid`]: super::PaneGrid
     Idle,
+    /// A [`Pane`] in the [`PaneGrid`] is being clicked.
+    ///
+    /// [`PaneGrid`]: super::PaneGrid
+    Clicking {
+        /// The [`Pane`] being clicked.
+        pane: Pane,
+        /// The starting [`Point`] of the click interaction.
+        origin: Point,
+    },
     /// A [`Pane`] in the [`PaneGrid`] is being dragged.
     ///
     /// [`PaneGrid`]: super::PaneGrid
@@ -432,6 +441,14 @@ impl Action {
         }
     }
 
+    /// Returns the current [`Pane`] that is being clicked, if any.
+    pub fn clicked_pane(&self) -> Option<(Pane, Point)> {
+        match *self {
+            Action::Clicking { pane, origin, .. } => Some((pane, origin)),
+            _ => None,
+        }
+    }
+
     /// Returns the current [`Split`] that is being dragged, if any.
     pub fn picked_split(&self) -> Option<(Split, Axis)> {
         match *self {
diff --git a/widget/src/pane_grid/title_bar.rs b/widget/src/pane_grid/title_bar.rs
index f4dbb6b1..eb21b743 100644
--- a/widget/src/pane_grid/title_bar.rs
+++ b/widget/src/pane_grid/title_bar.rs
@@ -217,7 +217,7 @@ where
         renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.pad(self.padding);
+        let limits = limits.shrink(self.padding);
         let max_size = limits.max();
 
         let title_layout = self.content.as_widget().layout(
@@ -228,8 +228,8 @@ where
 
         let title_size = title_layout.size();
 
-        let mut node = if let Some(controls) = &self.controls {
-            let mut controls_layout = controls.as_widget().layout(
+        let node = if let Some(controls) = &self.controls {
+            let controls_layout = controls.as_widget().layout(
                 &mut tree.children[1],
                 renderer,
                 &layout::Limits::new(Size::ZERO, max_size),
@@ -240,11 +240,13 @@ where
 
             let height = title_size.height.max(controls_size.height);
 
-            controls_layout.move_to(Point::new(space_before_controls, 0.0));
-
             layout::Node::with_children(
                 Size::new(max_size.width, height),
-                vec![title_layout, controls_layout],
+                vec![
+                    title_layout,
+                    controls_layout
+                        .move_to(Point::new(space_before_controls, 0.0)),
+                ],
             )
         } else {
             layout::Node::with_children(
@@ -253,9 +255,7 @@ where
             )
         };
 
-        node.move_to(Point::new(self.padding.left, self.padding.top));
-
-        layout::Node::with_children(node.size().pad(self.padding), vec![node])
+        layout::Node::container(node, self.padding)
     }
 
     pub(crate) fn operate(
diff --git a/widget/src/pick_list.rs b/widget/src/pick_list.rs
index 022ca8d9..2e3aab6f 100644
--- a/widget/src/pick_list.rs
+++ b/widget/src/pick_list.rs
@@ -45,7 +45,7 @@ where
 
 impl<'a, T: 'a, Message, Renderer> PickList<'a, T, Message, Renderer>
 where
-    T: ToString + Eq,
+    T: ToString + PartialEq,
     [T]: ToOwned<Owned = Vec<T>>,
     Renderer: text::Renderer,
     Renderer::Theme: StyleSheet
@@ -145,7 +145,7 @@ where
 impl<'a, T: 'a, Message, Renderer> Widget<Message, Renderer>
     for PickList<'a, T, Message, Renderer>
 where
-    T: Clone + ToString + Eq + 'static,
+    T: Clone + ToString + PartialEq + 'static,
     [T]: ToOwned<Owned = Vec<T>>,
     Message: 'a,
     Renderer: text::Renderer + 'a,
@@ -164,12 +164,11 @@ where
         tree::State::new(State::<Renderer::Paragraph>::new())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
@@ -282,7 +281,7 @@ where
 impl<'a, T: 'a, Message, Renderer> From<PickList<'a, T, Message, Renderer>>
     for Element<'a, Message, Renderer>
 where
-    T: Clone + ToString + Eq + 'static,
+    T: Clone + ToString + PartialEq + 'static,
     [T]: ToOwned<Owned = Vec<T>>,
     Message: 'a,
     Renderer: text::Renderer + 'a,
@@ -393,7 +392,6 @@ where
 {
     use std::f32;
 
-    let limits = limits.width(width).height(Length::Shrink).pad(padding);
     let font = font.unwrap_or_else(|| renderer.default_font());
     let text_size = text_size.unwrap_or_else(|| renderer.default_size());
 
@@ -451,7 +449,11 @@ where
             f32::from(text_line_height.to_absolute(text_size)),
         );
 
-        limits.resolve(intrinsic).pad(padding)
+        limits
+            .width(width)
+            .shrink(padding)
+            .resolve(width, Length::Shrink, intrinsic)
+            .expand(padding)
     };
 
     layout::Node::new(size)
diff --git a/widget/src/progress_bar.rs b/widget/src/progress_bar.rs
index 07de72d5..15f1277b 100644
--- a/widget/src/progress_bar.rs
+++ b/widget/src/progress_bar.rs
@@ -85,12 +85,11 @@ where
     Renderer: crate::core::Renderer,
     Renderer::Theme: StyleSheet,
 {
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT))
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT)),
+        }
     }
 
     fn layout(
@@ -99,13 +98,11 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits
-            .width(self.width)
-            .height(self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT)));
-
-        let size = limits.resolve(Size::ZERO);
-
-        layout::Node::new(size)
+        layout::atomic(
+            limits,
+            self.width,
+            self.height.unwrap_or(Length::Fixed(Self::DEFAULT_HEIGHT)),
+        )
     }
 
     fn draw(
diff --git a/widget/src/qr_code.rs b/widget/src/qr_code.rs
index 1dc4da7f..a229eb59 100644
--- a/widget/src/qr_code.rs
+++ b/widget/src/qr_code.rs
@@ -50,12 +50,11 @@ impl<'a> QRCode<'a> {
 }
 
 impl<'a, Message, Theme> Widget<Message, Renderer<Theme>> for QRCode<'a> {
-    fn width(&self) -> Length {
-        Length::Shrink
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: Length::Shrink,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/radio.rs b/widget/src/radio.rs
index ae2365dd..f91b20b1 100644
--- a/widget/src/radio.rs
+++ b/widget/src/radio.rs
@@ -201,12 +201,11 @@ where
         tree::State::new(widget::text::State::<Renderer::Paragraph>::default())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/row.rs b/widget/src/row.rs
index d52b8c43..90fd2926 100644
--- a/widget/src/row.rs
+++ b/widget/src/row.rs
@@ -7,7 +7,7 @@ use crate::core::renderer;
 use crate::core::widget::{Operation, Tree};
 use crate::core::{
     Alignment, Clipboard, Element, Length, Padding, Pixels, Rectangle, Shell,
-    Widget,
+    Size, Widget,
 };
 
 /// A container that distributes its contents horizontally.
@@ -21,26 +21,29 @@ pub struct Row<'a, Message, Renderer = crate::Renderer> {
     children: Vec<Element<'a, Message, Renderer>>,
 }
 
-impl<'a, Message, Renderer> Row<'a, Message, Renderer> {
+impl<'a, Message, Renderer> Row<'a, Message, Renderer>
+where
+    Renderer: crate::core::Renderer,
+{
     /// Creates an empty [`Row`].
     pub fn new() -> Self {
-        Self::with_children(Vec::new())
-    }
-
-    /// Creates a [`Row`] with the given elements.
-    pub fn with_children(
-        children: Vec<Element<'a, Message, Renderer>>,
-    ) -> Self {
         Row {
             spacing: 0.0,
             padding: Padding::ZERO,
             width: Length::Shrink,
             height: Length::Shrink,
             align_items: Alignment::Start,
-            children,
+            children: Vec::new(),
         }
     }
 
+    /// Creates a [`Row`] with the given elements.
+    pub fn with_children(
+        children: impl IntoIterator<Item = Element<'a, Message, Renderer>>,
+    ) -> Self {
+        children.into_iter().fold(Self::new(), Self::push)
+    }
+
     /// Sets the horizontal spacing _between_ elements.
     ///
     /// Custom margins per element do not exist in iced. You should use this
@@ -80,12 +83,26 @@ impl<'a, Message, Renderer> Row<'a, Message, Renderer> {
         mut self,
         child: impl Into<Element<'a, Message, Renderer>>,
     ) -> Self {
-        self.children.push(child.into());
+        let child = child.into();
+        let size = child.as_widget().size_hint();
+
+        if size.width.is_fill() {
+            self.width = Length::Fill;
+        }
+
+        if size.height.is_fill() {
+            self.height = Length::Fill;
+        }
+
+        self.children.push(child);
         self
     }
 }
 
-impl<'a, Message, Renderer> Default for Row<'a, Message, Renderer> {
+impl<'a, Message, Renderer> Default for Row<'a, Message, Renderer>
+where
+    Renderer: crate::core::Renderer,
+{
     fn default() -> Self {
         Self::new()
     }
@@ -104,12 +121,11 @@ where
         tree.diff_children(&self.children);
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -118,12 +134,12 @@ where
         renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-
         layout::flex::resolve(
             layout::flex::Axis::Horizontal,
             renderer,
-            &limits,
+            limits,
+            self.width,
+            self.height,
             self.padding,
             self.spacing,
             self.align_items,
diff --git a/widget/src/rule.rs b/widget/src/rule.rs
index b5c5fa55..cded9cb1 100644
--- a/widget/src/rule.rs
+++ b/widget/src/rule.rs
@@ -62,12 +62,11 @@ where
     Renderer: crate::core::Renderer,
     Renderer::Theme: StyleSheet,
 {
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -76,9 +75,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-
-        layout::Node::new(limits.resolve(Size::ZERO))
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn draw(
diff --git a/widget/src/scrollable.rs b/widget/src/scrollable.rs
index 49aed2f0..70db490a 100644
--- a/widget/src/scrollable.rs
+++ b/widget/src/scrollable.rs
@@ -220,12 +220,11 @@ where
         tree.diff_children(std::slice::from_ref(&self.content));
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -470,28 +469,25 @@ pub fn layout<Renderer>(
     direction: &Direction,
     layout_content: impl FnOnce(&Renderer, &layout::Limits) -> layout::Node,
 ) -> layout::Node {
-    let limits = limits.width(width).height(height);
-
-    let child_limits = layout::Limits::new(
-        Size::new(limits.min().width, limits.min().height),
-        Size::new(
-            if direction.horizontal().is_some() {
-                f32::INFINITY
-            } else {
-                limits.max().width
-            },
-            if direction.vertical().is_some() {
-                f32::MAX
-            } else {
-                limits.max().height
-            },
-        ),
-    );
-
-    let content = layout_content(renderer, &child_limits);
-    let size = limits.resolve(content.size());
+    layout::contained(limits, width, height, |limits| {
+        let child_limits = layout::Limits::new(
+            Size::new(limits.min().width, limits.min().height),
+            Size::new(
+                if direction.horizontal().is_some() {
+                    f32::INFINITY
+                } else {
+                    limits.max().width
+                },
+                if direction.vertical().is_some() {
+                    f32::MAX
+                } else {
+                    limits.max().height
+                },
+            ),
+        );
 
-    layout::Node::with_children(size, vec![content])
+        layout_content(renderer, &child_limits)
+    })
 }
 
 /// Processes an [`Event`] and updates the [`State`] of a [`Scrollable`]
diff --git a/widget/src/shader.rs b/widget/src/shader.rs
index 8e334693..16b68c55 100644
--- a/widget/src/shader.rs
+++ b/widget/src/shader.rs
@@ -70,12 +70,11 @@ where
         tree::State::new(P::State::default())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -84,10 +83,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-        let size = limits.resolve(Size::ZERO);
-
-        layout::Node::new(size)
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn on_event(
diff --git a/widget/src/slider.rs b/widget/src/slider.rs
index ac0982c8..1bc94661 100644
--- a/widget/src/slider.rs
+++ b/widget/src/slider.rs
@@ -159,12 +159,11 @@ where
         tree::State::new(State::new())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
@@ -173,10 +172,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-        let size = limits.resolve(Size::ZERO);
-
-        layout::Node::new(size)
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn on_event(
diff --git a/widget/src/space.rs b/widget/src/space.rs
index e5a8f169..eef990d1 100644
--- a/widget/src/space.rs
+++ b/widget/src/space.rs
@@ -45,12 +45,11 @@ impl<Message, Renderer> Widget<Message, Renderer> for Space
 where
     Renderer: core::Renderer,
 {
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -59,9 +58,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-
-        layout::Node::new(limits.resolve(Size::ZERO))
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn draw(
diff --git a/widget/src/svg.rs b/widget/src/svg.rs
index 2d01d1ab..830abb0f 100644
--- a/widget/src/svg.rs
+++ b/widget/src/svg.rs
@@ -96,12 +96,11 @@ where
     Renderer: svg::Renderer,
     Renderer::Theme: iced_style::svg::StyleSheet,
 {
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -115,10 +114,7 @@ where
         let image_size = Size::new(width as f32, height as f32);
 
         // The size to be available to the widget prior to `Shrink`ing
-        let raw_size = limits
-            .width(self.width)
-            .height(self.height)
-            .resolve(image_size);
+        let raw_size = limits.resolve(self.width, self.height, image_size);
 
         // The uncropped size of the image when fit to the bounds above
         let full_size = self.content_fit.fit(image_size, raw_size);
diff --git a/widget/src/text_editor.rs b/widget/src/text_editor.rs
index 3c0a1806..b95a45e4 100644
--- a/widget/src/text_editor.rs
+++ b/widget/src/text_editor.rs
@@ -9,7 +9,7 @@ use crate::core::text::highlighter::{self, Highlighter};
 use crate::core::text::{self, LineHeight};
 use crate::core::widget::{self, Widget};
 use crate::core::{
-    Clipboard, Color, Element, Length, Padding, Pixels, Rectangle, Shell,
+    Clipboard, Color, Element, Length, Padding, Pixels, Rectangle, Shell, Size,
     Vector,
 };
 
@@ -316,12 +316,11 @@ where
         })
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -350,7 +349,7 @@ where
         }
 
         internal.editor.update(
-            limits.pad(self.padding).max(),
+            limits.shrink(self.padding).max(),
             self.font.unwrap_or_else(|| renderer.default_font()),
             self.text_size.unwrap_or_else(|| renderer.default_size()),
             self.line_height,
diff --git a/widget/src/text_input.rs b/widget/src/text_input.rs
index 8ba4bd71..8d28e8ee 100644
--- a/widget/src/text_input.rs
+++ b/widget/src/text_input.rs
@@ -283,12 +283,11 @@ where
         }
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
@@ -506,14 +505,11 @@ where
 {
     let font = font.unwrap_or_else(|| renderer.default_font());
     let text_size = size.unwrap_or_else(|| renderer.default_size());
-
     let padding = padding.fit(Size::ZERO, limits.max());
-    let limits = limits
-        .width(width)
-        .pad(padding)
-        .height(line_height.to_absolute(text_size));
+    let height = line_height.to_absolute(text_size);
 
-    let text_bounds = limits.resolve(Size::ZERO);
+    let limits = limits.width(width).shrink(padding);
+    let text_bounds = limits.resolve(width, height, Size::ZERO);
 
     let placeholder_text = Text {
         font,
@@ -552,41 +548,41 @@ where
 
         let icon_width = state.icon.min_width();
 
-        let mut text_node = layout::Node::new(
-            text_bounds - Size::new(icon_width + icon.spacing, 0.0),
-        );
-
-        let mut icon_node =
-            layout::Node::new(Size::new(icon_width, text_bounds.height));
-
-        match icon.side {
-            Side::Left => {
-                text_node.move_to(Point::new(
+        let (text_position, icon_position) = match icon.side {
+            Side::Left => (
+                Point::new(
                     padding.left + icon_width + icon.spacing,
                     padding.top,
-                ));
-
-                icon_node.move_to(Point::new(padding.left, padding.top));
-            }
-            Side::Right => {
-                text_node.move_to(Point::new(padding.left, padding.top));
-
-                icon_node.move_to(Point::new(
+                ),
+                Point::new(padding.left, padding.top),
+            ),
+            Side::Right => (
+                Point::new(padding.left, padding.top),
+                Point::new(
                     padding.left + text_bounds.width - icon_width,
                     padding.top,
-                ));
-            }
+                ),
+            ),
         };
 
+        let text_node = layout::Node::new(
+            text_bounds - Size::new(icon_width + icon.spacing, 0.0),
+        )
+        .move_to(text_position);
+
+        let icon_node =
+            layout::Node::new(Size::new(icon_width, text_bounds.height))
+                .move_to(icon_position);
+
         layout::Node::with_children(
-            text_bounds.pad(padding),
+            text_bounds.expand(padding),
             vec![text_node, icon_node],
         )
     } else {
-        let mut text = layout::Node::new(text_bounds);
-        text.move_to(Point::new(padding.left, padding.top));
+        let text = layout::Node::new(text_bounds)
+            .move_to(Point::new(padding.left, padding.top));
 
-        layout::Node::with_children(text_bounds.pad(padding), vec![text])
+        layout::Node::with_children(text_bounds.expand(padding), vec![text])
     }
 }
 
@@ -1192,31 +1188,39 @@ pub fn draw<Renderer>(
         (None, 0.0)
     };
 
-    if let Some((cursor, color)) = cursor {
-        renderer.with_translation(Vector::new(-offset, 0.0), |renderer| {
-            renderer.fill_quad(cursor, color);
-        });
+    let draw = |renderer: &mut Renderer, viewport| {
+        if let Some((cursor, color)) = cursor {
+            renderer.with_translation(Vector::new(-offset, 0.0), |renderer| {
+                renderer.fill_quad(cursor, color);
+            });
+        } else {
+            renderer.with_translation(Vector::ZERO, |_| {});
+        }
+
+        renderer.fill_paragraph(
+            if text.is_empty() {
+                &state.placeholder
+            } else {
+                &state.value
+            },
+            Point::new(text_bounds.x, text_bounds.center_y())
+                - Vector::new(offset, 0.0),
+            if text.is_empty() {
+                theme.placeholder_color(style)
+            } else if is_disabled {
+                theme.disabled_color(style)
+            } else {
+                theme.value_color(style)
+            },
+            viewport,
+        );
+    };
+
+    if cursor.is_some() {
+        renderer.with_layer(text_bounds, |renderer| draw(renderer, *viewport));
     } else {
-        renderer.with_translation(Vector::ZERO, |_| {});
+        draw(renderer, text_bounds);
     }
-
-    renderer.fill_paragraph(
-        if text.is_empty() {
-            &state.placeholder
-        } else {
-            &state.value
-        },
-        Point::new(text_bounds.x, text_bounds.center_y())
-            - Vector::new(offset, 0.0),
-        if text.is_empty() {
-            theme.placeholder_color(style)
-        } else if is_disabled {
-            theme.disabled_color(style)
-        } else {
-            theme.value_color(style)
-        },
-        text_bounds,
-    );
 }
 
 /// Computes the current [`mouse::Interaction`] of the [`TextInput`].
diff --git a/widget/src/toggler.rs b/widget/src/toggler.rs
index d8723080..941159ea 100644
--- a/widget/src/toggler.rs
+++ b/widget/src/toggler.rs
@@ -168,12 +168,11 @@ where
         tree::State::new(widget::text::State::<Renderer::Paragraph>::default())
     }
 
-    fn width(&self) -> Length {
-        self.width
-    }
-
-    fn height(&self) -> Length {
-        Length::Shrink
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: self.width,
+            height: Length::Shrink,
+        }
     }
 
     fn layout(
diff --git a/widget/src/tooltip.rs b/widget/src/tooltip.rs
index 9e102c56..d09a9255 100644
--- a/widget/src/tooltip.rs
+++ b/widget/src/tooltip.rs
@@ -64,6 +64,12 @@ where
         self
     }
 
+    /// Sets the [`text::Shaping`] strategy of the [`Tooltip`].
+    pub fn text_shaping(mut self, shaping: text::Shaping) -> Self {
+        self.tooltip = self.tooltip.shaping(shaping);
+        self
+    }
+
     /// Sets the font of the [`Tooltip`].
     ///
     /// [`Font`]: Renderer::Font
@@ -125,12 +131,8 @@ where
         widget::tree::Tag::of::<State>()
     }
 
-    fn width(&self) -> Length {
-        self.content.as_widget().width()
-    }
-
-    fn height(&self) -> Length {
-        self.content.as_widget().height()
+    fn size(&self) -> Size<Length> {
+        self.content.as_widget().size()
     }
 
     fn layout(
@@ -347,7 +349,7 @@ where
                     .then(|| viewport.size())
                     .unwrap_or(Size::INFINITY),
             )
-            .pad(Padding::new(self.padding)),
+            .shrink(Padding::new(self.padding)),
         );
 
         let text_bounds = text_layout.bounds();
diff --git a/widget/src/vertical_slider.rs b/widget/src/vertical_slider.rs
index 01d3359c..a3029d76 100644
--- a/widget/src/vertical_slider.rs
+++ b/widget/src/vertical_slider.rs
@@ -156,12 +156,11 @@ where
         tree::State::new(State::new())
     }
 
-    fn width(&self) -> Length {
-        Length::Shrink
-    }
-
-    fn height(&self) -> Length {
-        self.height
+    fn size(&self) -> Size<Length> {
+        Size {
+            width: Length::Shrink,
+            height: self.height,
+        }
     }
 
     fn layout(
@@ -170,10 +169,7 @@ where
         _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
-        let limits = limits.width(self.width).height(self.height);
-        let size = limits.resolve(Size::ZERO);
-
-        layout::Node::new(size)
+        layout::atomic(limits, self.width, self.height)
     }
 
     fn on_event(