Draft new `iced_graphics` crate :tada:

23 files changed, 1540 insertions, 0 deletions

diff --git a/graphics/src/widget/button.rs b/graphics/src/widget/button.rs
new file mode 100644
index 00000000..9debf5c3
--- /dev/null
+++ b/graphics/src/widget/button.rs
@@ -0,0 +1,16 @@
+//! Allow your users to perform actions by pressing a button.
+//!
+//! A [`Button`] has some local [`State`].
+//!
+//! [`Button`]: type.Button.html
+//! [`State`]: struct.State.html
+use crate::Renderer;
+
+pub use iced_native::button::State;
+pub use iced_style::button::{Style, StyleSheet};
+
+/// A widget that produces a message when clicked.
+///
+/// This is an alias of an `iced_native` button with an `iced_wgpu::Renderer`.
+pub type Button<'a, Message, Backend> =
+    iced_native::Button<'a, Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/canvas.rs b/graphics/src/widget/canvas.rs
new file mode 100644
index 00000000..d393a5c5
--- /dev/null
+++ b/graphics/src/widget/canvas.rs
@@ -0,0 +1,236 @@
+//! Draw 2D graphics for your users.
+//!
+//! A [`Canvas`] widget can be used to draw different kinds of 2D shapes in a
+//! [`Frame`]. It can be used for animation, data visualization, game graphics,
+//! and more!
+//!
+//! [`Canvas`]: struct.Canvas.html
+//! [`Frame`]: struct.Frame.html
+use crate::{Backend, Defaults, Primitive, Renderer};
+use iced_native::{
+    layout, mouse, Clipboard, Element, Hasher, Layout, Length, Point, Size,
+    Vector, Widget,
+};
+use std::hash::Hash;
+use std::marker::PhantomData;
+
+pub mod path;
+
+mod cache;
+mod cursor;
+mod event;
+mod fill;
+mod frame;
+mod geometry;
+mod program;
+mod stroke;
+mod text;
+
+pub use cache::Cache;
+pub use cursor::Cursor;
+pub use event::Event;
+pub use fill::Fill;
+pub use frame::Frame;
+pub use geometry::Geometry;
+pub use path::Path;
+pub use program::Program;
+pub use stroke::{LineCap, LineJoin, Stroke};
+pub use text::Text;
+
+/// A widget capable of drawing 2D graphics.
+///
+/// [`Canvas`]: struct.Canvas.html
+///
+/// # Examples
+/// The repository has a couple of [examples] showcasing how to use a
+/// [`Canvas`]:
+///
+/// - [`clock`], an application that uses the [`Canvas`] widget to draw a clock
+/// and its hands to display the current time.
+/// - [`game_of_life`], an interactive version of the Game of Life, invented by
+/// John Conway.
+/// - [`solar_system`], an animated solar system drawn using the [`Canvas`] widget
+/// and showcasing how to compose different transforms.
+///
+/// [examples]: https://github.com/hecrj/iced/tree/master/examples
+/// [`clock`]: https://github.com/hecrj/iced/tree/master/examples/clock
+/// [`game_of_life`]: https://github.com/hecrj/iced/tree/master/examples/game_of_life
+/// [`solar_system`]: https://github.com/hecrj/iced/tree/master/examples/solar_system
+///
+/// ## Drawing a simple circle
+/// If you want to get a quick overview, here's how we can draw a simple circle:
+///
+/// ```no_run
+/// # mod iced {
+/// #     pub use iced_graphics::canvas;
+/// #     pub use iced_native::{Color, Rectangle};
+/// # }
+/// use iced::canvas::{self, Canvas, Cursor, Fill, Frame, Geometry, Path, Program};
+/// use iced::{Color, Rectangle};
+///
+/// // First, we define the data we need for drawing
+/// #[derive(Debug)]
+/// struct Circle {
+///     radius: f32,
+/// }
+///
+/// // Then, we implement the `Program` trait
+/// impl Program<()> for Circle {
+///     fn draw(&self, bounds: Rectangle, _cursor: Cursor) -> Vec<Geometry>{
+///         // We prepare a new `Frame`
+///         let mut frame = Frame::new(bounds.size());
+///
+///         // We create a `Path` representing a simple circle
+///         let circle = Path::circle(frame.center(), self.radius);
+///
+///         // And fill it with some color
+///         frame.fill(&circle, Fill::Color(Color::BLACK));
+///
+///         // Finally, we produce the geometry
+///         vec![frame.into_geometry()]
+///     }
+/// }
+///
+/// // Finally, we simply use our `Circle` to create the `Canvas`!
+/// let canvas = Canvas::new(Circle { radius: 50.0 });
+/// ```
+#[derive(Debug)]
+pub struct Canvas<Message, P: Program<Message>> {
+    width: Length,
+    height: Length,
+    program: P,
+    phantom: PhantomData<Message>,
+}
+
+impl<Message, P: Program<Message>> Canvas<Message, P> {
+    const DEFAULT_SIZE: u16 = 100;
+
+    /// Creates a new [`Canvas`].
+    ///
+    /// [`Canvas`]: struct.Canvas.html
+    pub fn new(program: P) -> Self {
+        Canvas {
+            width: Length::Units(Self::DEFAULT_SIZE),
+            height: Length::Units(Self::DEFAULT_SIZE),
+            program,
+            phantom: PhantomData,
+        }
+    }
+
+    /// Sets the width of the [`Canvas`].
+    ///
+    /// [`Canvas`]: struct.Canvas.html
+    pub fn width(mut self, width: Length) -> Self {
+        self.width = width;
+        self
+    }
+
+    /// Sets the height of the [`Canvas`].
+    ///
+    /// [`Canvas`]: struct.Canvas.html
+    pub fn height(mut self, height: Length) -> Self {
+        self.height = height;
+        self
+    }
+}
+
+impl<Message, P, B> Widget<Message, Renderer<B>> for Canvas<Message, P>
+where
+    P: Program<Message>,
+    B: Backend,
+{
+    fn width(&self) -> Length {
+        self.width
+    }
+
+    fn height(&self) -> Length {
+        self.height
+    }
+
+    fn layout(
+        &self,
+        _renderer: &Renderer<B>,
+        limits: &layout::Limits,
+    ) -> layout::Node {
+        let limits = limits.width(self.width).height(self.height);
+        let size = limits.resolve(Size::ZERO);
+
+        layout::Node::new(size)
+    }
+
+    fn on_event(
+        &mut self,
+        event: iced_native::Event,
+        layout: Layout<'_>,
+        cursor_position: Point,
+        messages: &mut Vec<Message>,
+        _renderer: &Renderer<B>,
+        _clipboard: Option<&dyn Clipboard>,
+    ) {
+        let bounds = layout.bounds();
+
+        let canvas_event = match event {
+            iced_native::Event::Mouse(mouse_event) => {
+                Some(Event::Mouse(mouse_event))
+            }
+            _ => None,
+        };
+
+        let cursor = Cursor::from_window_position(cursor_position);
+
+        if let Some(canvas_event) = canvas_event {
+            if let Some(message) =
+                self.program.update(canvas_event, bounds, cursor)
+            {
+                messages.push(message);
+            }
+        }
+    }
+
+    fn draw(
+        &self,
+        _renderer: &mut Renderer<B>,
+        _defaults: &Defaults,
+        layout: Layout<'_>,
+        cursor_position: Point,
+    ) -> (Primitive, mouse::Interaction) {
+        let bounds = layout.bounds();
+        let translation = Vector::new(bounds.x, bounds.y);
+        let cursor = Cursor::from_window_position(cursor_position);
+
+        (
+            Primitive::Translate {
+                translation,
+                content: Box::new(Primitive::Group {
+                    primitives: self
+                        .program
+                        .draw(bounds, cursor)
+                        .into_iter()
+                        .map(Geometry::into_primitive)
+                        .collect(),
+                }),
+            },
+            self.program.mouse_interaction(bounds, cursor),
+        )
+    }
+
+    fn hash_layout(&self, state: &mut Hasher) {
+        struct Marker;
+        std::any::TypeId::of::<Marker>().hash(state);
+
+        self.width.hash(state);
+        self.height.hash(state);
+    }
+}
+
+impl<'a, Message, P, B> From<Canvas<Message, P>>
+    for Element<'a, Message, Renderer<B>>
+where
+    Message: 'static,
+    P: Program<Message> + 'a,
+    B: Backend,
+{
+    fn from(canvas: Canvas<Message, P>) -> Element<'a, Message, Renderer<B>> {
+        Element::new(canvas)
+    }
+}
diff --git a/graphics/src/widget/canvas/cache.rs b/graphics/src/widget/canvas/cache.rs
new file mode 100644
index 00000000..4b28d164
--- /dev/null
+++ b/graphics/src/widget/canvas/cache.rs
@@ -0,0 +1,108 @@
+use crate::{
+    canvas::{Frame, Geometry},
+    Primitive,
+};
+
+use iced_native::Size;
+use std::{cell::RefCell, sync::Arc};
+
+enum State {
+    Empty,
+    Filled {
+        bounds: Size,
+        primitive: Arc<Primitive>,
+    },
+}
+
+impl Default for State {
+    fn default() -> Self {
+        State::Empty
+    }
+}
+/// A simple cache that stores generated [`Geometry`] to avoid recomputation.
+///
+/// A [`Cache`] will not redraw its geometry unless the dimensions of its layer
+/// change or it is explicitly cleared.
+///
+/// [`Layer`]: ../trait.Layer.html
+/// [`Cache`]: struct.Cache.html
+/// [`Geometry`]: struct.Geometry.html
+#[derive(Debug, Default)]
+pub struct Cache {
+    state: RefCell<State>,
+}
+
+impl Cache {
+    /// Creates a new empty [`Cache`].
+    ///
+    /// [`Cache`]: struct.Cache.html
+    pub fn new() -> Self {
+        Cache {
+            state: Default::default(),
+        }
+    }
+
+    /// Clears the [`Cache`], forcing a redraw the next time it is used.
+    ///
+    /// [`Cache`]: struct.Cache.html
+    pub fn clear(&mut self) {
+        *self.state.borrow_mut() = State::Empty;
+    }
+
+    /// Draws [`Geometry`] using the provided closure and stores it in the
+    /// [`Cache`].
+    ///
+    /// The closure will only be called when
+    /// - the bounds have changed since the previous draw call.
+    /// - the [`Cache`] is empty or has been explicitly cleared.
+    ///
+    /// Otherwise, the previously stored [`Geometry`] will be returned. The
+    /// [`Cache`] is not cleared in this case. In other words, it will keep
+    /// returning the stored [`Geometry`] if needed.
+    ///
+    /// [`Cache`]: struct.Cache.html
+    pub fn draw(&self, bounds: Size, draw_fn: impl Fn(&mut Frame)) -> Geometry {
+        use std::ops::Deref;
+
+        if let State::Filled {
+            bounds: cached_bounds,
+            primitive,
+        } = self.state.borrow().deref()
+        {
+            if *cached_bounds == bounds {
+                return Geometry::from_primitive(Primitive::Cached {
+                    cache: primitive.clone(),
+                });
+            }
+        }
+
+        let mut frame = Frame::new(bounds);
+        draw_fn(&mut frame);
+
+        let primitive = {
+            let geometry = frame.into_geometry();
+
+            Arc::new(geometry.into_primitive())
+        };
+
+        *self.state.borrow_mut() = State::Filled {
+            bounds,
+            primitive: primitive.clone(),
+        };
+
+        Geometry::from_primitive(Primitive::Cached { cache: primitive })
+    }
+}
+
+impl std::fmt::Debug for State {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            State::Empty => write!(f, "Empty"),
+            State::Filled { primitive, bounds } => f
+                .debug_struct("Filled")
+                .field("primitive", primitive)
+                .field("bounds", bounds)
+                .finish(),
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/cursor.rs b/graphics/src/widget/canvas/cursor.rs
new file mode 100644
index 00000000..456760ea
--- /dev/null
+++ b/graphics/src/widget/canvas/cursor.rs
@@ -0,0 +1,72 @@
+use iced_native::{Point, Rectangle};
+
+/// The mouse cursor state.
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum Cursor {
+    /// The cursor has a defined position.
+    Available(Point),
+
+    /// The cursor is currently unavailable (i.e. out of bounds or busy).
+    Unavailable,
+}
+
+impl Cursor {
+    // TODO: Remove this once this type is used in `iced_native` to encode
+    // proper cursor availability
+    pub(crate) fn from_window_position(position: Point) -> Self {
+        if position.x < 0.0 || position.y < 0.0 {
+            Cursor::Unavailable
+        } else {
+            Cursor::Available(position)
+        }
+    }
+
+    /// Returns the absolute position of the [`Cursor`], if available.
+    ///
+    /// [`Cursor`]: enum.Cursor.html
+    pub fn position(&self) -> Option<Point> {
+        match self {
+            Cursor::Available(position) => Some(*position),
+            Cursor::Unavailable => None,
+        }
+    }
+
+    /// Returns the relative position of the [`Cursor`] inside the given bounds,
+    /// if available.
+    ///
+    /// If the [`Cursor`] is not over the provided bounds, this method will
+    /// return `None`.
+    ///
+    /// [`Cursor`]: enum.Cursor.html
+    pub fn position_in(&self, bounds: &Rectangle) -> Option<Point> {
+        if self.is_over(bounds) {
+            self.position_from(bounds.position())
+        } else {
+            None
+        }
+    }
+
+    /// Returns the relative position of the [`Cursor`] from the given origin,
+    /// if available.
+    ///
+    /// [`Cursor`]: enum.Cursor.html
+    pub fn position_from(&self, origin: Point) -> Option<Point> {
+        match self {
+            Cursor::Available(position) => {
+                Some(Point::new(position.x - origin.x, position.y - origin.y))
+            }
+            Cursor::Unavailable => None,
+        }
+    }
+
+    /// Returns whether the [`Cursor`] is currently over the provided bounds
+    /// or not.
+    ///
+    /// [`Cursor`]: enum.Cursor.html
+    pub fn is_over(&self, bounds: &Rectangle) -> bool {
+        match self {
+            Cursor::Available(position) => bounds.contains(*position),
+            Cursor::Unavailable => false,
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/event.rs b/graphics/src/widget/canvas/event.rs
new file mode 100644
index 00000000..ad11f51e
--- /dev/null
+++ b/graphics/src/widget/canvas/event.rs
@@ -0,0 +1,10 @@
+use iced_native::mouse;
+
+/// A [`Canvas`] event.
+///
+/// [`Canvas`]: struct.Event.html
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum Event {
+    /// A mouse event.
+    Mouse(mouse::Event),
+}
diff --git a/graphics/src/widget/canvas/fill.rs b/graphics/src/widget/canvas/fill.rs
new file mode 100644
index 00000000..a2010e45
--- /dev/null
+++ b/graphics/src/widget/canvas/fill.rs
@@ -0,0 +1,20 @@
+use iced_native::Color;
+
+/// The style used to fill geometry.
+#[derive(Debug, Clone, Copy)]
+pub enum Fill {
+    /// Fill with a color.
+    Color(Color),
+}
+
+impl Default for Fill {
+    fn default() -> Fill {
+        Fill::Color(Color::BLACK)
+    }
+}
+
+impl From<Color> for Fill {
+    fn from(color: Color) -> Fill {
+        Fill::Color(color)
+    }
+}
diff --git a/graphics/src/widget/canvas/frame.rs b/graphics/src/widget/canvas/frame.rs
new file mode 100644
index 00000000..5262ab4e
--- /dev/null
+++ b/graphics/src/widget/canvas/frame.rs
@@ -0,0 +1,367 @@
+use iced_native::{Point, Rectangle, Size, Vector};
+
+use crate::{
+    canvas::{Fill, Geometry, Path, Stroke, Text},
+    triangle, Primitive,
+};
+
+/// The frame of a [`Canvas`].
+///
+/// [`Canvas`]: struct.Canvas.html
+#[derive(Debug)]
+pub struct Frame {
+    size: Size,
+    buffers: lyon::tessellation::VertexBuffers<triangle::Vertex2D, u32>,
+    primitives: Vec<Primitive>,
+    transforms: Transforms,
+}
+
+#[derive(Debug)]
+struct Transforms {
+    previous: Vec<Transform>,
+    current: Transform,
+}
+
+#[derive(Debug, Clone, Copy)]
+struct Transform {
+    raw: lyon::math::Transform,
+    is_identity: bool,
+}
+
+impl Frame {
+    /// Creates a new empty [`Frame`] with the given dimensions.
+    ///
+    /// The default coordinate system of a [`Frame`] has its origin at the
+    /// top-left corner of its bounds.
+    ///
+    /// [`Frame`]: struct.Frame.html
+    pub fn new(size: Size) -> Frame {
+        Frame {
+            size,
+            buffers: lyon::tessellation::VertexBuffers::new(),
+            primitives: Vec::new(),
+            transforms: Transforms {
+                previous: Vec::new(),
+                current: Transform {
+                    raw: lyon::math::Transform::identity(),
+                    is_identity: true,
+                },
+            },
+        }
+    }
+
+    /// Returns the width of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn width(&self) -> f32 {
+        self.size.width
+    }
+
+    /// Returns the width of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn height(&self) -> f32 {
+        self.size.height
+    }
+
+    /// Returns the dimensions of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn size(&self) -> Size {
+        self.size
+    }
+
+    /// Returns the coordinate of the center of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn center(&self) -> Point {
+        Point::new(self.size.width / 2.0, self.size.height / 2.0)
+    }
+
+    /// Draws the given [`Path`] on the [`Frame`] by filling it with the
+    /// provided style.
+    ///
+    /// [`Path`]: path/struct.Path.html
+    /// [`Frame`]: struct.Frame.html
+    pub fn fill(&mut self, path: &Path, fill: impl Into<Fill>) {
+        use lyon::tessellation::{
+            BuffersBuilder, FillOptions, FillTessellator,
+        };
+
+        let mut buffers = BuffersBuilder::new(
+            &mut self.buffers,
+            FillVertex(match fill.into() {
+                Fill::Color(color) => color.into_linear(),
+            }),
+        );
+
+        let mut tessellator = FillTessellator::new();
+
+        let result = if self.transforms.current.is_identity {
+            tessellator.tessellate_path(
+                path.raw(),
+                &FillOptions::default(),
+                &mut buffers,
+            )
+        } else {
+            let path = path.transformed(&self.transforms.current.raw);
+
+            tessellator.tessellate_path(
+                path.raw(),
+                &FillOptions::default(),
+                &mut buffers,
+            )
+        };
+
+        let _ = result.expect("Tessellate path");
+    }
+
+    /// Draws an axis-aligned rectangle given its top-left corner coordinate and
+    /// its `Size` on the [`Frame`] by filling it with the provided style.
+    ///
+    /// [`Frame`]: struct.Frame.html
+    pub fn fill_rectangle(
+        &mut self,
+        top_left: Point,
+        size: Size,
+        fill: impl Into<Fill>,
+    ) {
+        use lyon::tessellation::{BuffersBuilder, FillOptions};
+
+        let mut buffers = BuffersBuilder::new(
+            &mut self.buffers,
+            FillVertex(match fill.into() {
+                Fill::Color(color) => color.into_linear(),
+            }),
+        );
+
+        let top_left =
+            self.transforms.current.raw.transform_point(
+                lyon::math::Point::new(top_left.x, top_left.y),
+            );
+
+        let size =
+            self.transforms.current.raw.transform_vector(
+                lyon::math::Vector::new(size.width, size.height),
+            );
+
+        let _ = lyon::tessellation::basic_shapes::fill_rectangle(
+            &lyon::math::Rect::new(top_left, size.into()),
+            &FillOptions::default(),
+            &mut buffers,
+        )
+        .expect("Fill rectangle");
+    }
+
+    /// Draws the stroke of the given [`Path`] on the [`Frame`] with the
+    /// provided style.
+    ///
+    /// [`Path`]: path/struct.Path.html
+    /// [`Frame`]: struct.Frame.html
+    pub fn stroke(&mut self, path: &Path, stroke: impl Into<Stroke>) {
+        use lyon::tessellation::{
+            BuffersBuilder, StrokeOptions, StrokeTessellator,
+        };
+
+        let stroke = stroke.into();
+
+        let mut buffers = BuffersBuilder::new(
+            &mut self.buffers,
+            StrokeVertex(stroke.color.into_linear()),
+        );
+
+        let mut tessellator = StrokeTessellator::new();
+
+        let mut options = StrokeOptions::default();
+        options.line_width = stroke.width;
+        options.start_cap = stroke.line_cap.into();
+        options.end_cap = stroke.line_cap.into();
+        options.line_join = stroke.line_join.into();
+
+        let result = if self.transforms.current.is_identity {
+            tessellator.tessellate_path(path.raw(), &options, &mut buffers)
+        } else {
+            let path = path.transformed(&self.transforms.current.raw);
+
+            tessellator.tessellate_path(path.raw(), &options, &mut buffers)
+        };
+
+        let _ = result.expect("Stroke path");
+    }
+
+    /// Draws the characters of the given [`Text`] on the [`Frame`], filling
+    /// them with the given color.
+    ///
+    /// __Warning:__ Text currently does not work well with rotations and scale
+    /// transforms! The position will be correctly transformed, but the
+    /// resulting glyphs will not be rotated or scaled properly.
+    ///
+    /// Additionally, all text will be rendered on top of all the layers of
+    /// a [`Canvas`]. Therefore, it is currently only meant to be used for
+    /// overlays, which is the most common use case.
+    ///
+    /// Support for vectorial text is planned, and should address all these
+    /// limitations.
+    ///
+    /// [`Text`]: struct.Text.html
+    /// [`Frame`]: struct.Frame.html
+    /// [`Canvas`]: struct.Canvas.html
+    pub fn fill_text(&mut self, text: impl Into<Text>) {
+        use std::f32;
+
+        let text = text.into();
+
+        let position = if self.transforms.current.is_identity {
+            text.position
+        } else {
+            let transformed = self.transforms.current.raw.transform_point(
+                lyon::math::Point::new(text.position.x, text.position.y),
+            );
+
+            Point::new(transformed.x, transformed.y)
+        };
+
+        // TODO: Use vectorial text instead of primitive
+        self.primitives.push(Primitive::Text {
+            content: text.content,
+            bounds: Rectangle {
+                x: position.x,
+                y: position.y,
+                width: f32::INFINITY,
+                height: f32::INFINITY,
+            },
+            color: text.color,
+            size: text.size,
+            font: text.font,
+            horizontal_alignment: text.horizontal_alignment,
+            vertical_alignment: text.vertical_alignment,
+        });
+    }
+
+    /// Stores the current transform of the [`Frame`] and executes the given
+    /// drawing operations, restoring the transform afterwards.
+    ///
+    /// This method is useful to compose transforms and perform drawing
+    /// operations in different coordinate systems.
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn with_save(&mut self, f: impl FnOnce(&mut Frame)) {
+        self.transforms.previous.push(self.transforms.current);
+
+        f(self);
+
+        self.transforms.current = self.transforms.previous.pop().unwrap();
+    }
+
+    /// Applies a translation to the current transform of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn translate(&mut self, translation: Vector) {
+        self.transforms.current.raw = self
+            .transforms
+            .current
+            .raw
+            .pre_translate(lyon::math::Vector::new(
+                translation.x,
+                translation.y,
+            ));
+        self.transforms.current.is_identity = false;
+    }
+
+    /// Applies a rotation to the current transform of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn rotate(&mut self, angle: f32) {
+        self.transforms.current.raw = self
+            .transforms
+            .current
+            .raw
+            .pre_rotate(lyon::math::Angle::radians(-angle));
+        self.transforms.current.is_identity = false;
+    }
+
+    /// Applies a scaling to the current transform of the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    #[inline]
+    pub fn scale(&mut self, scale: f32) {
+        self.transforms.current.raw =
+            self.transforms.current.raw.pre_scale(scale, scale);
+        self.transforms.current.is_identity = false;
+    }
+
+    /// Produces the [`Geometry`] representing everything drawn on the [`Frame`].
+    ///
+    /// [`Frame`]: struct.Frame.html
+    /// [`Geometry`]: struct.Geometry.html
+    pub fn into_geometry(mut self) -> Geometry {
+        if !self.buffers.indices.is_empty() {
+            self.primitives.push(Primitive::Mesh2D {
+                size: self.size,
+                buffers: triangle::Mesh2D {
+                    vertices: self.buffers.vertices,
+                    indices: self.buffers.indices,
+                },
+            });
+        }
+
+        Geometry::from_primitive(Primitive::Group {
+            primitives: self.primitives,
+        })
+    }
+}
+
+struct FillVertex([f32; 4]);
+
+impl lyon::tessellation::BasicVertexConstructor<triangle::Vertex2D>
+    for FillVertex
+{
+    fn new_vertex(
+        &mut self,
+        position: lyon::math::Point,
+    ) -> triangle::Vertex2D {
+        triangle::Vertex2D {
+            position: [position.x, position.y],
+            color: self.0,
+        }
+    }
+}
+
+impl lyon::tessellation::FillVertexConstructor<triangle::Vertex2D>
+    for FillVertex
+{
+    fn new_vertex(
+        &mut self,
+        position: lyon::math::Point,
+        _attributes: lyon::tessellation::FillAttributes<'_>,
+    ) -> triangle::Vertex2D {
+        triangle::Vertex2D {
+            position: [position.x, position.y],
+            color: self.0,
+        }
+    }
+}
+
+struct StrokeVertex([f32; 4]);
+
+impl lyon::tessellation::StrokeVertexConstructor<triangle::Vertex2D>
+    for StrokeVertex
+{
+    fn new_vertex(
+        &mut self,
+        position: lyon::math::Point,
+        _attributes: lyon::tessellation::StrokeAttributes<'_, '_>,
+    ) -> triangle::Vertex2D {
+        triangle::Vertex2D {
+            position: [position.x, position.y],
+            color: self.0,
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/geometry.rs b/graphics/src/widget/canvas/geometry.rs
new file mode 100644
index 00000000..4cadee39
--- /dev/null
+++ b/graphics/src/widget/canvas/geometry.rs
@@ -0,0 +1,34 @@
+use crate::Primitive;
+
+/// A bunch of shapes that can be drawn.
+///
+/// [`Geometry`] can be easily generated with a [`Frame`] or stored in a
+/// [`Cache`].
+///
+/// [`Geometry`]: struct.Geometry.html
+/// [`Frame`]: struct.Frame.html
+/// [`Cache`]: struct.Cache.html
+#[derive(Debug, Clone)]
+pub struct Geometry(Primitive);
+
+impl Geometry {
+    pub(crate) fn from_primitive(primitive: Primitive) -> Self {
+        Self(primitive)
+    }
+
+    /// Turns the [`Geometry`] into a [`Primitive`].
+    ///
+    /// This can be useful if you are building a custom widget.
+    ///
+    /// [`Geometry`]: struct.Geometry.html
+    /// [`Primitive`]: ../enum.Primitive.html
+    pub fn into_primitive(self) -> Primitive {
+        self.0
+    }
+}
+
+impl From<Geometry> for Primitive {
+    fn from(geometry: Geometry) -> Primitive {
+        geometry.0
+    }
+}
diff --git a/graphics/src/widget/canvas/path.rs b/graphics/src/widget/canvas/path.rs
new file mode 100644
index 00000000..c26bf187
--- /dev/null
+++ b/graphics/src/widget/canvas/path.rs
@@ -0,0 +1,79 @@
+//! Build different kinds of 2D shapes.
+pub mod arc;
+
+mod builder;
+
+#[doc(no_inline)]
+pub use arc::Arc;
+pub use builder::Builder;
+
+use iced_native::{Point, Size};
+
+/// An immutable set of points that may or may not be connected.
+///
+/// A single [`Path`] can represent different kinds of 2D shapes!
+///
+/// [`Path`]: struct.Path.html
+#[derive(Debug, Clone)]
+pub struct Path {
+    raw: lyon::path::Path,
+}
+
+impl Path {
+    /// Creates a new [`Path`] with the provided closure.
+    ///
+    /// Use the [`Builder`] to configure your [`Path`].
+    ///
+    /// [`Path`]: struct.Path.html
+    /// [`Builder`]: struct.Builder.html
+    pub fn new(f: impl FnOnce(&mut Builder)) -> Self {
+        let mut builder = Builder::new();
+
+        // TODO: Make it pure instead of side-effect-based (?)
+        f(&mut builder);
+
+        builder.build()
+    }
+
+    /// Creates a new [`Path`] representing a line segment given its starting
+    /// and end points.
+    ///
+    /// [`Path`]: struct.Path.html
+    pub fn line(from: Point, to: Point) -> Self {
+        Self::new(|p| {
+            p.move_to(from);
+            p.line_to(to);
+        })
+    }
+
+    /// Creates a new [`Path`] representing a rectangle given its top-left
+    /// corner coordinate and its `Size`.
+    ///
+    /// [`Path`]: struct.Path.html
+    pub fn rectangle(top_left: Point, size: Size) -> Self {
+        Self::new(|p| p.rectangle(top_left, size))
+    }
+
+    /// Creates a new [`Path`] representing a circle given its center
+    /// coordinate and its radius.
+    ///
+    /// [`Path`]: struct.Path.html
+    pub fn circle(center: Point, radius: f32) -> Self {
+        Self::new(|p| p.circle(center, radius))
+    }
+
+    #[inline]
+    pub(crate) fn raw(&self) -> &lyon::path::Path {
+        &self.raw
+    }
+
+    #[inline]
+    pub(crate) fn transformed(
+        &self,
+        transform: &lyon::math::Transform,
+    ) -> Path {
+        Path {
+            raw: self.raw.transformed(transform),
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/path/arc.rs b/graphics/src/widget/canvas/path/arc.rs
new file mode 100644
index 00000000..343191f1
--- /dev/null
+++ b/graphics/src/widget/canvas/path/arc.rs
@@ -0,0 +1,44 @@
+//! Build and draw curves.
+use iced_native::{Point, Vector};
+
+/// A segment of a differentiable curve.
+#[derive(Debug, Clone, Copy)]
+pub struct Arc {
+    /// The center of the arc.
+    pub center: Point,
+    /// The radius of the arc.
+    pub radius: f32,
+    /// The start of the segment's angle, clockwise rotation.
+    pub start_angle: f32,
+    /// The end of the segment's angle, clockwise rotation.
+    pub end_angle: f32,
+}
+
+/// An elliptical [`Arc`].
+///
+/// [`Arc`]: struct.Arc.html
+#[derive(Debug, Clone, Copy)]
+pub struct Elliptical {
+    /// The center of the arc.
+    pub center: Point,
+    /// The radii of the arc's ellipse, defining its axes.
+    pub radii: Vector,
+    /// The rotation of the arc's ellipse.
+    pub rotation: f32,
+    /// The start of the segment's angle, clockwise rotation.
+    pub start_angle: f32,
+    /// The end of the segment's angle, clockwise rotation.
+    pub end_angle: f32,
+}
+
+impl From<Arc> for Elliptical {
+    fn from(arc: Arc) -> Elliptical {
+        Elliptical {
+            center: arc.center,
+            radii: Vector::new(arc.radius, arc.radius),
+            rotation: 0.0,
+            start_angle: arc.start_angle,
+            end_angle: arc.end_angle,
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/path/builder.rs b/graphics/src/widget/canvas/path/builder.rs
new file mode 100644
index 00000000..6511fa52
--- /dev/null
+++ b/graphics/src/widget/canvas/path/builder.rs
@@ -0,0 +1,180 @@
+use crate::canvas::path::{arc, Arc, Path};
+
+use iced_native::{Point, Size};
+use lyon::path::builder::{Build, FlatPathBuilder, PathBuilder, SvgBuilder};
+
+/// A [`Path`] builder.
+///
+/// Once a [`Path`] is built, it can no longer be mutated.
+///
+/// [`Path`]: struct.Path.html
+#[allow(missing_debug_implementations)]
+pub struct Builder {
+    raw: lyon::path::builder::SvgPathBuilder<lyon::path::Builder>,
+}
+
+impl Builder {
+    /// Creates a new [`Builder`].
+    ///
+    /// [`Builder`]: struct.Builder.html
+    pub fn new() -> Builder {
+        Builder {
+            raw: lyon::path::Path::builder().with_svg(),
+        }
+    }
+
+    /// Moves the starting point of a new sub-path to the given `Point`.
+    #[inline]
+    pub fn move_to(&mut self, point: Point) {
+        let _ = self.raw.move_to(lyon::math::Point::new(point.x, point.y));
+    }
+
+    /// Connects the last point in the [`Path`] to the given `Point` with a
+    /// straight line.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn line_to(&mut self, point: Point) {
+        let _ = self.raw.line_to(lyon::math::Point::new(point.x, point.y));
+    }
+
+    /// Adds an [`Arc`] to the [`Path`] from `start_angle` to `end_angle` in
+    /// a clockwise direction.
+    ///
+    /// [`Arc`]: struct.Arc.html
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn arc(&mut self, arc: Arc) {
+        self.ellipse(arc.into());
+    }
+
+    /// Adds a circular arc to the [`Path`] with the given control points and
+    /// radius.
+    ///
+    /// The arc is connected to the previous point by a straight line, if
+    /// necessary.
+    ///
+    /// [`Path`]: struct.Path.html
+    pub fn arc_to(&mut self, a: Point, b: Point, radius: f32) {
+        use lyon::{math, path};
+
+        let a = math::Point::new(a.x, a.y);
+
+        if self.raw.current_position() != a {
+            let _ = self.raw.line_to(a);
+        }
+
+        let _ = self.raw.arc_to(
+            math::Vector::new(radius, radius),
+            math::Angle::radians(0.0),
+            path::ArcFlags::default(),
+            math::Point::new(b.x, b.y),
+        );
+    }
+
+    /// Adds an [`Ellipse`] to the [`Path`] using a clockwise direction.
+    ///
+    /// [`Ellipse`]: struct.Arc.html
+    /// [`Path`]: struct.Path.html
+    pub fn ellipse(&mut self, arc: arc::Elliptical) {
+        use lyon::{geom, math};
+
+        let arc = geom::Arc {
+            center: math::Point::new(arc.center.x, arc.center.y),
+            radii: math::Vector::new(arc.radii.x, arc.radii.y),
+            x_rotation: math::Angle::radians(arc.rotation),
+            start_angle: math::Angle::radians(arc.start_angle),
+            sweep_angle: math::Angle::radians(arc.end_angle),
+        };
+
+        let _ = self.raw.move_to(arc.sample(0.0));
+
+        arc.for_each_quadratic_bezier(&mut |curve| {
+            let _ = self.raw.quadratic_bezier_to(curve.ctrl, curve.to);
+        });
+    }
+
+    /// Adds a cubic Bézier curve to the [`Path`] given its two control points
+    /// and its end point.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn bezier_curve_to(
+        &mut self,
+        control_a: Point,
+        control_b: Point,
+        to: Point,
+    ) {
+        use lyon::math;
+
+        let _ = self.raw.cubic_bezier_to(
+            math::Point::new(control_a.x, control_a.y),
+            math::Point::new(control_b.x, control_b.y),
+            math::Point::new(to.x, to.y),
+        );
+    }
+
+    /// Adds a quadratic Bézier curve to the [`Path`] given its control point
+    /// and its end point.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn quadratic_curve_to(&mut self, control: Point, to: Point) {
+        use lyon::math;
+
+        let _ = self.raw.quadratic_bezier_to(
+            math::Point::new(control.x, control.y),
+            math::Point::new(to.x, to.y),
+        );
+    }
+
+    /// Adds a rectangle to the [`Path`] given its top-left corner coordinate
+    /// and its `Size`.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn rectangle(&mut self, top_left: Point, size: Size) {
+        self.move_to(top_left);
+        self.line_to(Point::new(top_left.x + size.width, top_left.y));
+        self.line_to(Point::new(
+            top_left.x + size.width,
+            top_left.y + size.height,
+        ));
+        self.line_to(Point::new(top_left.x, top_left.y + size.height));
+        self.close();
+    }
+
+    /// Adds a circle to the [`Path`] given its center coordinate and its
+    /// radius.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn circle(&mut self, center: Point, radius: f32) {
+        self.arc(Arc {
+            center,
+            radius,
+            start_angle: 0.0,
+            end_angle: 2.0 * std::f32::consts::PI,
+        });
+    }
+
+    /// Closes the current sub-path in the [`Path`] with a straight line to
+    /// the starting point.
+    ///
+    /// [`Path`]: struct.Path.html
+    #[inline]
+    pub fn close(&mut self) {
+        self.raw.close()
+    }
+
+    /// Builds the [`Path`] of this [`Builder`].
+    ///
+    /// [`Path`]: struct.Path.html
+    /// [`Builder`]: struct.Builder.html
+    #[inline]
+    pub fn build(self) -> Path {
+        Path {
+            raw: self.raw.build(),
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/program.rs b/graphics/src/widget/canvas/program.rs
new file mode 100644
index 00000000..725d9d72
--- /dev/null
+++ b/graphics/src/widget/canvas/program.rs
@@ -0,0 +1,85 @@
+use crate::canvas::{Cursor, Event, Geometry};
+use iced_native::{mouse, Rectangle};
+
+/// The state and logic of a [`Canvas`].
+///
+/// A [`Program`] can mutate internal state and produce messages for an
+/// application.
+///
+/// [`Canvas`]: struct.Canvas.html
+/// [`Program`]: trait.Program.html
+pub trait Program<Message> {
+    /// Updates the state of the [`Program`].
+    ///
+    /// When a [`Program`] is used in a [`Canvas`], the runtime will call this
+    /// method for each [`Event`].
+    ///
+    /// This method can optionally return a `Message` to notify an application
+    /// of any meaningful interactions.
+    ///
+    /// By default, this method does and returns nothing.
+    ///
+    /// [`Program`]: trait.Program.html
+    /// [`Canvas`]: struct.Canvas.html
+    /// [`Event`]: enum.Event.html
+    fn update(
+        &mut self,
+        _event: Event,
+        _bounds: Rectangle,
+        _cursor: Cursor,
+    ) -> Option<Message> {
+        None
+    }
+
+    /// Draws the state of the [`Program`], producing a bunch of [`Geometry`].
+    ///
+    /// [`Geometry`] can be easily generated with a [`Frame`] or stored in a
+    /// [`Cache`].
+    ///
+    /// [`Program`]: trait.Program.html
+    /// [`Geometry`]: struct.Geometry.html
+    /// [`Frame`]: struct.Frame.html
+    /// [`Cache`]: struct.Cache.html
+    fn draw(&self, bounds: Rectangle, cursor: Cursor) -> Vec<Geometry>;
+
+    /// Returns the current mouse interaction of the [`Program`].
+    ///
+    /// The interaction returned will be in effect even if the cursor position
+    /// is out of bounds of the program's [`Canvas`].
+    ///
+    /// [`Program`]: trait.Program.html
+    /// [`Canvas`]: struct.Canvas.html
+    fn mouse_interaction(
+        &self,
+        _bounds: Rectangle,
+        _cursor: Cursor,
+    ) -> mouse::Interaction {
+        mouse::Interaction::default()
+    }
+}
+
+impl<T, Message> Program<Message> for &mut T
+where
+    T: Program<Message>,
+{
+    fn update(
+        &mut self,
+        event: Event,
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> Option<Message> {
+        T::update(self, event, bounds, cursor)
+    }
+
+    fn draw(&self, bounds: Rectangle, cursor: Cursor) -> Vec<Geometry> {
+        T::draw(self, bounds, cursor)
+    }
+
+    fn mouse_interaction(
+        &self,
+        bounds: Rectangle,
+        cursor: Cursor,
+    ) -> mouse::Interaction {
+        T::mouse_interaction(self, bounds, cursor)
+    }
+}
diff --git a/graphics/src/widget/canvas/stroke.rs b/graphics/src/widget/canvas/stroke.rs
new file mode 100644
index 00000000..5b6fc56a
--- /dev/null
+++ b/graphics/src/widget/canvas/stroke.rs
@@ -0,0 +1,115 @@
+use iced_native::Color;
+
+/// The style of a stroke.
+#[derive(Debug, Clone, Copy)]
+pub struct Stroke {
+    /// The color of the stroke.
+    pub color: Color,
+    /// The distance between the two edges of the stroke.
+    pub width: f32,
+    /// The shape to be used at the end of open subpaths when they are stroked.
+    pub line_cap: LineCap,
+    /// The shape to be used at the corners of paths or basic shapes when they
+    /// are stroked.
+    pub line_join: LineJoin,
+}
+
+impl Stroke {
+    /// Sets the color of the [`Stroke`].
+    ///
+    /// [`Stroke`]: struct.Stroke.html
+    pub fn with_color(self, color: Color) -> Stroke {
+        Stroke { color, ..self }
+    }
+
+    /// Sets the width of the [`Stroke`].
+    ///
+    /// [`Stroke`]: struct.Stroke.html
+    pub fn with_width(self, width: f32) -> Stroke {
+        Stroke { width, ..self }
+    }
+
+    /// Sets the [`LineCap`] of the [`Stroke`].
+    ///
+    /// [`LineCap`]: enum.LineCap.html
+    /// [`Stroke`]: struct.Stroke.html
+    pub fn with_line_cap(self, line_cap: LineCap) -> Stroke {
+        Stroke { line_cap, ..self }
+    }
+
+    /// Sets the [`LineJoin`] of the [`Stroke`].
+    ///
+    /// [`LineJoin`]: enum.LineJoin.html
+    /// [`Stroke`]: struct.Stroke.html
+    pub fn with_line_join(self, line_join: LineJoin) -> Stroke {
+        Stroke { line_join, ..self }
+    }
+}
+
+impl Default for Stroke {
+    fn default() -> Stroke {
+        Stroke {
+            color: Color::BLACK,
+            width: 1.0,
+            line_cap: LineCap::default(),
+            line_join: LineJoin::default(),
+        }
+    }
+}
+
+/// The shape used at the end of open subpaths when they are stroked.
+#[derive(Debug, Clone, Copy)]
+pub enum LineCap {
+    /// The stroke for each sub-path does not extend beyond its two endpoints.
+    Butt,
+    /// At the end of each sub-path, the shape representing the stroke will be
+    /// extended by a square.
+    Square,
+    /// At the end of each sub-path, the shape representing the stroke will be
+    /// extended by a semicircle.
+    Round,
+}
+
+impl Default for LineCap {
+    fn default() -> LineCap {
+        LineCap::Butt
+    }
+}
+
+impl From<LineCap> for lyon::tessellation::LineCap {
+    fn from(line_cap: LineCap) -> lyon::tessellation::LineCap {
+        match line_cap {
+            LineCap::Butt => lyon::tessellation::LineCap::Butt,
+            LineCap::Square => lyon::tessellation::LineCap::Square,
+            LineCap::Round => lyon::tessellation::LineCap::Round,
+        }
+    }
+}
+
+/// The shape used at the corners of paths or basic shapes when they are
+/// stroked.
+#[derive(Debug, Clone, Copy)]
+pub enum LineJoin {
+    /// A sharp corner.
+    Miter,
+    /// A round corner.
+    Round,
+    /// A bevelled corner.
+    Bevel,
+}
+
+impl Default for LineJoin {
+    fn default() -> LineJoin {
+        LineJoin::Miter
+    }
+}
+
+impl From<LineJoin> for lyon::tessellation::LineJoin {
+    fn from(line_join: LineJoin) -> lyon::tessellation::LineJoin {
+        match line_join {
+            LineJoin::Miter => lyon::tessellation::LineJoin::Miter,
+            LineJoin::Round => lyon::tessellation::LineJoin::Round,
+            LineJoin::Bevel => lyon::tessellation::LineJoin::Bevel,
+        }
+    }
+}
diff --git a/graphics/src/widget/canvas/text.rs b/graphics/src/widget/canvas/text.rs
new file mode 100644
index 00000000..c4cae30e
--- /dev/null
+++ b/graphics/src/widget/canvas/text.rs
@@ -0,0 +1,49 @@
+use iced_native::{Color, Font, HorizontalAlignment, Point, VerticalAlignment};
+
+/// A bunch of text that can be drawn to a canvas
+#[derive(Debug, Clone)]
+pub struct Text {
+    /// The contents of the text
+    pub content: String,
+    /// The position where to begin drawing the text (top-left corner coordinates)
+    pub position: Point,
+    /// The color of the text
+    pub color: Color,
+    /// The size of the text
+    pub size: f32,
+    /// The font of the text
+    pub font: Font,
+    /// The horizontal alignment of the text
+    pub horizontal_alignment: HorizontalAlignment,
+    /// The vertical alignment of the text
+    pub vertical_alignment: VerticalAlignment,
+}
+
+impl Default for Text {
+    fn default() -> Text {
+        Text {
+            content: String::new(),
+            position: Point::ORIGIN,
+            color: Color::BLACK,
+            size: 16.0,
+            font: Font::Default,
+            horizontal_alignment: HorizontalAlignment::Left,
+            vertical_alignment: VerticalAlignment::Top,
+        }
+    }
+}
+
+impl From<String> for Text {
+    fn from(content: String) -> Text {
+        Text {
+            content,
+            ..Default::default()
+        }
+    }
+}
+
+impl From<&str> for Text {
+    fn from(content: &str) -> Text {
+        String::from(content).into()
+    }
+}
diff --git a/graphics/src/widget/checkbox.rs b/graphics/src/widget/checkbox.rs
new file mode 100644
index 00000000..3c8b58de
--- /dev/null
+++ b/graphics/src/widget/checkbox.rs
@@ -0,0 +1,10 @@
+//! Show toggle controls using checkboxes.
+use crate::Renderer;
+
+pub use iced_style::checkbox::{Style, StyleSheet};
+
+/// A box that can be checked.
+///
+/// This is an alias of an `iced_native` checkbox with an `iced_wgpu::Renderer`.
+pub type Checkbox<Message, Backend> =
+    iced_native::Checkbox<Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/container.rs b/graphics/src/widget/container.rs
new file mode 100644
index 00000000..c4c4e5ba
--- /dev/null
+++ b/graphics/src/widget/container.rs
@@ -0,0 +1,11 @@
+//! Decorate content and apply alignment.
+use crate::Renderer;
+
+pub use iced_style::container::{Style, StyleSheet};
+
+/// An element decorating some content.
+///
+/// This is an alias of an `iced_native` container with a default
+/// `Renderer`.
+pub type Container<'a, Message, Backend> =
+    iced_native::Container<'a, Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/pane_grid.rs b/graphics/src/widget/pane_grid.rs
new file mode 100644
index 00000000..34be8ee7
--- /dev/null
+++ b/graphics/src/widget/pane_grid.rs
@@ -0,0 +1,25 @@
+//! Let your users split regions of your application and organize layout dynamically.
+//!
+//! [![Pane grid - Iced](https://thumbs.gfycat.com/MixedFlatJellyfish-small.gif)](https://gfycat.com/mixedflatjellyfish)
+//!
+//! # Example
+//! The [`pane_grid` example] showcases how to use a [`PaneGrid`] with resizing,
+//! drag and drop, and hotkey support.
+//!
+//! [`pane_grid` example]: https://github.com/hecrj/iced/tree/0.1/examples/pane_grid
+//! [`PaneGrid`]: type.PaneGrid.html
+use crate::Renderer;
+
+pub use iced_native::pane_grid::{
+    Axis, Direction, DragEvent, Focus, KeyPressEvent, Pane, ResizeEvent, Split,
+    State,
+};
+
+/// A collection of panes distributed using either vertical or horizontal splits
+/// to completely fill the space available.
+///
+/// [![Pane grid - Iced](https://thumbs.gfycat.com/MixedFlatJellyfish-small.gif)](https://gfycat.com/mixedflatjellyfish)
+///
+/// This is an alias of an `iced_native` pane grid with an `iced_wgpu::Renderer`.
+pub type PaneGrid<'a, Message, Backend> =
+    iced_native::PaneGrid<'a, Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/progress_bar.rs b/graphics/src/widget/progress_bar.rs
new file mode 100644
index 00000000..c1e5702e
--- /dev/null
+++ b/graphics/src/widget/progress_bar.rs
@@ -0,0 +1,15 @@
+//! Allow your users to visually track the progress of a computation.
+//!
+//! A [`ProgressBar`] has a range of possible values and a current value,
+//! as well as a length, height and style.
+//!
+//! [`ProgressBar`]: type.ProgressBar.html
+use crate::Renderer;
+
+pub use iced_style::progress_bar::{Style, StyleSheet};
+
+/// A bar that displays progress.
+///
+/// This is an alias of an `iced_native` progress bar with an
+/// `iced_wgpu::Renderer`.
+pub type ProgressBar<Backend> = iced_native::ProgressBar<Renderer<Backend>>;
diff --git a/graphics/src/widget/radio.rs b/graphics/src/widget/radio.rs
new file mode 100644
index 00000000..c621a26a
--- /dev/null
+++ b/graphics/src/widget/radio.rs
@@ -0,0 +1,11 @@
+//! Create choices using radio buttons.
+use crate::Renderer;
+
+pub use iced_style::radio::{Style, StyleSheet};
+
+/// A circular button representing a choice.
+///
+/// This is an alias of an `iced_native` radio button with an
+/// `iced_wgpu::Renderer`.
+pub type Radio<Message, Backend> =
+    iced_native::Radio<Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/scrollable.rs b/graphics/src/widget/scrollable.rs
new file mode 100644
index 00000000..61eae587
--- /dev/null
+++ b/graphics/src/widget/scrollable.rs
@@ -0,0 +1,13 @@
+//! Navigate an endless amount of content with a scrollbar.
+use crate::Renderer;
+
+pub use iced_native::scrollable::State;
+pub use iced_style::scrollable::{Scrollbar, Scroller, StyleSheet};
+
+/// A widget that can vertically display an infinite amount of content
+/// with a scrollbar.
+///
+/// This is an alias of an `iced_native` scrollable with a default
+/// `Renderer`.
+pub type Scrollable<'a, Message, Backend> =
+    iced_native::Scrollable<'a, Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/slider.rs b/graphics/src/widget/slider.rs
new file mode 100644
index 00000000..035c7c41
--- /dev/null
+++ b/graphics/src/widget/slider.rs
@@ -0,0 +1,17 @@
+//! Display an interactive selector of a single value from a range of values.
+//!
+//! A [`Slider`] has some local [`State`].
+//!
+//! [`Slider`]: struct.Slider.html
+//! [`State`]: struct.State.html
+use crate::Renderer;
+
+pub use iced_native::slider::State;
+pub use iced_style::slider::{Handle, HandleShape, Style, StyleSheet};
+
+/// An horizontal bar and a handle that selects a single value from a range of
+/// values.
+///
+/// This is an alias of an `iced_native` slider with an `iced_wgpu::Renderer`.
+pub type Slider<'a, Message, Backend> =
+    iced_native::Slider<'a, Message, Renderer<Backend>>;
diff --git a/graphics/src/widget/text.rs b/graphics/src/widget/text.rs
new file mode 100644
index 00000000..ec0349f9
--- /dev/null
+++ b/graphics/src/widget/text.rs
@@ -0,0 +1,7 @@
+//! Write some text for your users to read.
+use crate::Renderer;
+
+/// A paragraph of text.
+///
+/// This is an alias of an `iced_native` text with an `iced_wgpu::Renderer`.
+pub type Text<Backend> = iced_native::Text<Renderer<Backend>>;
diff --git a/graphics/src/widget/text_input.rs b/graphics/src/widget/text_input.rs
new file mode 100644
index 00000000..8015626b
--- /dev/null
+++ b/graphics/src/widget/text_input.rs
@@ -0,0 +1,16 @@
+//! Display fields that can be filled with text.
+//!
+//! A [`TextInput`] has some local [`State`].
+//!
+//! [`TextInput`]: struct.TextInput.html
+//! [`State`]: struct.State.html
+use crate::Renderer;
+
+pub use iced_native::text_input::State;
+pub use iced_style::text_input::{Style, StyleSheet};
+
+/// A field that can be filled with text.
+///
+/// This is an alias of an `iced_native` text input with an `iced_wgpu::Renderer`.
+pub type TextInput<'a, Message, Backend> =
+    iced_native::TextInput<'a, Message, Renderer<Backend>>;