Implement `Canvas` support for `iced_tiny_skia`

16 files changed, 259 insertions, 272 deletions

diff --git a/graphics/src/widget/canvas.rs b/native/src/widget/canvas.rs
index a8d050f5..8a9addd2 100644
--- a/graphics/src/widget/canvas.rs
+++ b/native/src/widget/canvas.rs
@@ -8,34 +8,26 @@ pub mod fill;
 pub mod path;
 pub mod stroke;
 
-mod cache;
 mod cursor;
-mod frame;
-mod geometry;
 mod program;
 mod style;
 mod text;
 
 pub use crate::gradient::{self, Gradient};
-pub use cache::Cache;
 pub use cursor::Cursor;
 pub use event::Event;
-pub use fill::{Fill, FillRule};
-pub use frame::Frame;
-pub use geometry::Geometry;
+pub use fill::Fill;
 pub use path::Path;
 pub use program::Program;
 pub use stroke::{LineCap, LineDash, LineJoin, Stroke};
 pub use style::Style;
 pub use text::Text;
 
-use crate::{Backend, Primitive, Renderer};
-
-use iced_native::layout::{self, Layout};
-use iced_native::mouse;
-use iced_native::renderer;
-use iced_native::widget::tree::{self, Tree};
-use iced_native::{
+use crate::layout::{self, Layout};
+use crate::mouse;
+use crate::renderer;
+use crate::widget::tree::{self, Tree};
+use crate::{
     Clipboard, Element, Length, Point, Rectangle, Shell, Size, Vector, Widget,
 };
 
@@ -85,20 +77,22 @@ use std::marker::PhantomData;
 /// let canvas = Canvas::new(Circle { radius: 50.0 });
 /// ```
 #[derive(Debug)]
-pub struct Canvas<Message, Theme, P>
+pub struct Canvas<Message, Renderer, P>
 where
-    P: Program<Message, Theme>,
+    Renderer: self::Renderer,
+    P: Program<Message, Renderer>,
 {
     width: Length,
     height: Length,
     program: P,
     message_: PhantomData<Message>,
-    theme_: PhantomData<Theme>,
+    theme_: PhantomData<Renderer>,
 }
 
-impl<Message, Theme, P> Canvas<Message, Theme, P>
+impl<Message, Renderer, P> Canvas<Message, Renderer, P>
 where
-    P: Program<Message, Theme>,
+    Renderer: self::Renderer,
+    P: Program<Message, Renderer>,
 {
     const DEFAULT_SIZE: f32 = 100.0;
 
@@ -126,10 +120,11 @@ where
     }
 }
 
-impl<Message, P, B, T> Widget<Message, Renderer<B, T>> for Canvas<Message, T, P>
+impl<Message, Renderer, P> Widget<Message, Renderer>
+    for Canvas<Message, Renderer, P>
 where
-    P: Program<Message, T>,
-    B: Backend,
+    Renderer: self::Renderer,
+    P: Program<Message, Renderer>,
 {
     fn tag(&self) -> tree::Tag {
         struct Tag<T>(T);
@@ -150,7 +145,7 @@ where
 
     fn layout(
         &self,
-        _renderer: &Renderer<B, T>,
+        _renderer: &Renderer,
         limits: &layout::Limits,
     ) -> layout::Node {
         let limits = limits.width(self.width).height(self.height);
@@ -162,23 +157,19 @@ where
     fn on_event(
         &mut self,
         tree: &mut Tree,
-        event: iced_native::Event,
+        event: crate::Event,
         layout: Layout<'_>,
         cursor_position: Point,
-        _renderer: &Renderer<B, T>,
+        _renderer: &Renderer,
         _clipboard: &mut dyn Clipboard,
         shell: &mut Shell<'_, Message>,
     ) -> event::Status {
         let bounds = layout.bounds();
 
         let canvas_event = match event {
-            iced_native::Event::Mouse(mouse_event) => {
-                Some(Event::Mouse(mouse_event))
-            }
-            iced_native::Event::Touch(touch_event) => {
-                Some(Event::Touch(touch_event))
-            }
-            iced_native::Event::Keyboard(keyboard_event) => {
+            crate::Event::Mouse(mouse_event) => Some(Event::Mouse(mouse_event)),
+            crate::Event::Touch(touch_event) => Some(Event::Touch(touch_event)),
+            crate::Event::Keyboard(keyboard_event) => {
                 Some(Event::Keyboard(keyboard_event))
             }
             _ => None,
@@ -208,7 +199,7 @@ where
         layout: Layout<'_>,
         cursor_position: Point,
         _viewport: &Rectangle,
-        _renderer: &Renderer<B, T>,
+        _renderer: &Renderer,
     ) -> mouse::Interaction {
         let bounds = layout.bounds();
         let cursor = Cursor::from_window_position(cursor_position);
@@ -220,49 +211,49 @@ where
     fn draw(
         &self,
         tree: &Tree,
-        renderer: &mut Renderer<B, T>,
-        theme: &T,
+        renderer: &mut Renderer,
+        theme: &Renderer::Theme,
         _style: &renderer::Style,
         layout: Layout<'_>,
         cursor_position: Point,
         _viewport: &Rectangle,
     ) {
-        use iced_native::Renderer as _;
-
         let bounds = layout.bounds();
 
         if bounds.width < 1.0 || bounds.height < 1.0 {
             return;
         }
 
-        let translation = Vector::new(bounds.x, bounds.y);
         let cursor = Cursor::from_window_position(cursor_position);
         let state = tree.state.downcast_ref::<P::State>();
 
-        renderer.with_translation(translation, |renderer| {
-            renderer.draw_primitive(Primitive::Group {
-                primitives: self
-                    .program
-                    .draw(state, theme, bounds, cursor)
-                    .into_iter()
-                    .map(Geometry::into_primitive)
-                    .collect(),
-            });
-        });
+        renderer.with_translation(
+            Vector::new(bounds.x, bounds.y),
+            |renderer| {
+                renderer.draw(
+                    self.program.draw(state, renderer, theme, bounds, cursor),
+                );
+            },
+        );
     }
 }
 
-impl<'a, Message, P, B, T> From<Canvas<Message, T, P>>
-    for Element<'a, Message, Renderer<B, T>>
+impl<'a, Message, Renderer, P> From<Canvas<Message, Renderer, P>>
+    for Element<'a, Message, Renderer>
 where
     Message: 'a,
-    P: Program<Message, T> + 'a,
-    B: Backend,
-    T: 'a,
+    Renderer: 'a + self::Renderer,
+    P: Program<Message, Renderer> + 'a,
 {
     fn from(
-        canvas: Canvas<Message, T, P>,
-    ) -> Element<'a, Message, Renderer<B, T>> {
+        canvas: Canvas<Message, Renderer, P>,
+    ) -> Element<'a, Message, Renderer> {
         Element::new(canvas)
     }
 }
+
+pub trait Renderer: crate::Renderer {
+    type Geometry;
+
+    fn draw(&mut self, geometry: Vec<Self::Geometry>);
+}
diff --git a/graphics/src/widget/canvas/cursor.rs b/native/src/widget/canvas/cursor.rs
index 9588d129..ef6a7771 100644
--- a/graphics/src/widget/canvas/cursor.rs
+++ b/native/src/widget/canvas/cursor.rs
@@ -1,4 +1,4 @@
-use iced_native::{Point, Rectangle};
+use crate::{Point, Rectangle};
 
 /// The mouse cursor state.
 #[derive(Debug, Clone, Copy, PartialEq)]
diff --git a/graphics/src/widget/canvas/event.rs b/native/src/widget/canvas/event.rs
index 7c733a4d..1d726577 100644
--- a/graphics/src/widget/canvas/event.rs
+++ b/native/src/widget/canvas/event.rs
@@ -1,9 +1,9 @@
 //! Handle events of a canvas.
-use iced_native::keyboard;
-use iced_native::mouse;
-use iced_native::touch;
+use crate::keyboard;
+use crate::mouse;
+use crate::touch;
 
-pub use iced_native::event::Status;
+pub use crate::event::Status;
 
 /// A [`Canvas`] event.
 ///
diff --git a/graphics/src/widget/canvas/fill.rs b/native/src/widget/canvas/fill.rs
index e954ebb5..92b1e47e 100644
--- a/graphics/src/widget/canvas/fill.rs
+++ b/native/src/widget/canvas/fill.rs
@@ -1,5 +1,6 @@
 //! Fill [crate::widget::canvas::Geometry] with a certain style.
-use crate::{Color, Gradient};
+use crate::widget::canvas::Gradient;
+use crate::Color;
 
 pub use crate::widget::canvas::Style;
 
@@ -19,14 +20,14 @@ pub struct Fill {
     /// By default, it is set to `NonZero`.
     ///
     /// [1]: https://www.w3.org/TR/SVG/painting.html#FillRuleProperty
-    pub rule: FillRule,
+    pub rule: Rule,
 }
 
 impl Default for Fill {
     fn default() -> Self {
         Self {
             style: Style::Solid(Color::BLACK),
-            rule: FillRule::NonZero,
+            rule: Rule::NonZero,
         }
     }
 }
@@ -57,16 +58,7 @@ impl From<Gradient> for Fill {
 /// [1]: https://www.w3.org/TR/SVG/painting.html#FillRuleProperty
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 #[allow(missing_docs)]
-pub enum FillRule {
+pub enum Rule {
     NonZero,
     EvenOdd,
 }
-
-impl From<FillRule> for lyon::tessellation::FillRule {
-    fn from(rule: FillRule) -> lyon::tessellation::FillRule {
-        match rule {
-            FillRule::NonZero => lyon::tessellation::FillRule::NonZero,
-            FillRule::EvenOdd => lyon::tessellation::FillRule::EvenOdd,
-        }
-    }
-}
diff --git a/graphics/src/widget/canvas/path.rs b/native/src/widget/canvas/path.rs
index aeb2589e..30c387c5 100644
--- a/graphics/src/widget/canvas/path.rs
+++ b/native/src/widget/canvas/path.rs
@@ -7,18 +7,16 @@ mod builder;
 pub use arc::Arc;
 pub use builder::Builder;
 
-use crate::widget::canvas::LineDash;
+pub use lyon_path;
 
-use iced_native::{Point, Size};
-use lyon::algorithms::walk::{walk_along_path, RepeatedPattern, WalkerEvent};
-use lyon::path::iterator::PathIterator;
+use crate::{Point, Size};
 
 /// An immutable set of points that may or may not be connected.
 ///
 /// A single [`Path`] can represent different kinds of 2D shapes!
 #[derive(Debug, Clone)]
 pub struct Path {
-    raw: lyon::path::Path,
+    raw: lyon_path::Path,
 }
 
 impl Path {
@@ -56,54 +54,14 @@ impl Path {
     }
 
     #[inline]
-    pub(crate) fn raw(&self) -> &lyon::path::Path {
+    pub fn raw(&self) -> &lyon_path::Path {
         &self.raw
     }
 
     #[inline]
-    pub(crate) fn transformed(
-        &self,
-        transform: &lyon::math::Transform,
-    ) -> Path {
+    pub fn transform(&self, transform: &lyon_path::math::Transform) -> Path {
         Path {
             raw: self.raw.clone().transformed(transform),
         }
     }
 }
-
-pub(super) fn dashed(path: &Path, line_dash: LineDash<'_>) -> Path {
-    Path::new(|builder| {
-        let segments_odd = (line_dash.segments.len() % 2 == 1)
-            .then(|| [line_dash.segments, line_dash.segments].concat());
-
-        let mut draw_line = false;
-
-        walk_along_path(
-            path.raw().iter().flattened(0.01),
-            0.0,
-            lyon::tessellation::StrokeOptions::DEFAULT_TOLERANCE,
-            &mut RepeatedPattern {
-                callback: |event: WalkerEvent<'_>| {
-                    let point = Point {
-                        x: event.position.x,
-                        y: event.position.y,
-                    };
-
-                    if draw_line {
-                        builder.line_to(point);
-                    } else {
-                        builder.move_to(point);
-                    }
-
-                    draw_line = !draw_line;
-
-                    true
-                },
-                index: line_dash.offset,
-                intervals: segments_odd
-                    .as_deref()
-                    .unwrap_or(line_dash.segments),
-            },
-        );
-    })
-}
diff --git a/graphics/src/widget/canvas/path/arc.rs b/native/src/widget/canvas/path/arc.rs
index b8e72daf..e0747d3e 100644
--- a/graphics/src/widget/canvas/path/arc.rs
+++ b/native/src/widget/canvas/path/arc.rs
@@ -1,5 +1,5 @@
 //! Build and draw curves.
-use iced_native::{Point, Vector};
+use crate::{Point, Vector};
 
 /// A segment of a differentiable curve.
 #[derive(Debug, Clone, Copy)]
diff --git a/graphics/src/widget/canvas/path/builder.rs b/native/src/widget/canvas/path/builder.rs
index 5121aa68..84fda052 100644
--- a/graphics/src/widget/canvas/path/builder.rs
+++ b/native/src/widget/canvas/path/builder.rs
@@ -1,35 +1,37 @@
 use crate::widget::canvas::path::{arc, Arc, Path};
+use crate::{Point, Size};
 
-use iced_native::{Point, Size};
-use lyon::path::builder::SvgPathBuilder;
+use lyon_path::builder::{self, SvgPathBuilder};
+use lyon_path::geom;
+use lyon_path::math;
 
 /// A [`Path`] builder.
 ///
 /// Once a [`Path`] is built, it can no longer be mutated.
 #[allow(missing_debug_implementations)]
 pub struct Builder {
-    raw: lyon::path::builder::WithSvg<lyon::path::path::BuilderImpl>,
+    raw: builder::WithSvg<lyon_path::path::BuilderImpl>,
 }
 
 impl Builder {
     /// Creates a new [`Builder`].
     pub fn new() -> Builder {
         Builder {
-            raw: lyon::path::Path::builder().with_svg(),
+            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));
+        let _ = self.raw.move_to(math::Point::new(point.x, point.y));
     }
 
     /// Connects the last point in the [`Path`] to the given `Point` with a
     /// straight line.
     #[inline]
     pub fn line_to(&mut self, point: Point) {
-        let _ = self.raw.line_to(lyon::math::Point::new(point.x, point.y));
+        let _ = self.raw.line_to(math::Point::new(point.x, point.y));
     }
 
     /// Adds an [`Arc`] to the [`Path`] from `start_angle` to `end_angle` in
@@ -53,8 +55,6 @@ impl Builder {
     /// See [the HTML5 specification of `arcTo`](https://html.spec.whatwg.org/multipage/canvas.html#building-paths:dom-context-2d-arcto)
     /// for more details and examples.
     pub fn arc_to(&mut self, a: Point, b: Point, radius: f32) {
-        use lyon::{math, path};
-
         let start = self.raw.current_position();
         let mid = math::Point::new(a.x, a.y);
         let end = math::Point::new(b.x, b.y);
@@ -92,7 +92,7 @@ impl Builder {
         self.raw.arc_to(
             math::Vector::new(radius, radius),
             math::Angle::radians(0.0),
-            path::ArcFlags {
+            lyon_path::ArcFlags {
                 large_arc: false,
                 sweep,
             },
@@ -102,8 +102,6 @@ impl Builder {
 
     /// Adds an ellipse to the [`Path`] using a clockwise direction.
     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),
@@ -128,8 +126,6 @@ impl Builder {
         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),
@@ -141,8 +137,6 @@ impl Builder {
     /// and its end point.
     #[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),
diff --git a/graphics/src/widget/canvas/program.rs b/native/src/widget/canvas/program.rs
index 656dbfa6..17a5a137 100644
--- a/graphics/src/widget/canvas/program.rs
+++ b/native/src/widget/canvas/program.rs
@@ -1,6 +1,6 @@
 use crate::widget::canvas::event::{self, Event};
 use crate::widget::canvas::mouse;
-use crate::widget::canvas::{Cursor, Geometry};
+use crate::widget::canvas::{Cursor, Renderer};
 use crate::Rectangle;
 
 /// The state and logic of a [`Canvas`].
@@ -9,7 +9,10 @@ use crate::Rectangle;
 /// application.
 ///
 /// [`Canvas`]: crate::widget::Canvas
-pub trait Program<Message, Theme = iced_native::Theme> {
+pub trait Program<Message, Renderer>
+where
+    Renderer: self::Renderer,
+{
     /// The internal state mutated by the [`Program`].
     type State: Default + 'static;
 
@@ -44,10 +47,11 @@ pub trait Program<Message, Theme = iced_native::Theme> {
     fn draw(
         &self,
         state: &Self::State,
-        theme: &Theme,
+        renderer: &Renderer,
+        theme: &Renderer::Theme,
         bounds: Rectangle,
         cursor: Cursor,
-    ) -> Vec<Geometry>;
+    ) -> Vec<Renderer::Geometry>;
 
     /// Returns the current mouse interaction of the [`Program`].
     ///
@@ -65,9 +69,10 @@ pub trait Program<Message, Theme = iced_native::Theme> {
     }
 }
 
-impl<Message, Theme, T> Program<Message, Theme> for &T
+impl<Message, Renderer, T> Program<Message, Renderer> for &T
 where
-    T: Program<Message, Theme>,
+    Renderer: self::Renderer,
+    T: Program<Message, Renderer>,
 {
     type State = T::State;
 
@@ -84,11 +89,12 @@ where
     fn draw(
         &self,
         state: &Self::State,
-        theme: &Theme,
+        renderer: &Renderer,
+        theme: &Renderer::Theme,
         bounds: Rectangle,
         cursor: Cursor,
-    ) -> Vec<Geometry> {
-        T::draw(self, state, theme, bounds, cursor)
+    ) -> Vec<Renderer::Geometry> {
+        T::draw(self, state, renderer, theme, bounds, cursor)
     }
 
     fn mouse_interaction(
diff --git a/graphics/src/widget/canvas/stroke.rs b/native/src/widget/canvas/stroke.rs
index 4c19251d..ab4727b2 100644
--- a/graphics/src/widget/canvas/stroke.rs
+++ b/native/src/widget/canvas/stroke.rs
@@ -1,7 +1,7 @@
 //! Create lines from a [crate::widget::canvas::Path] and assigns them various attributes/styles.
 pub use crate::widget::canvas::Style;
 
-use iced_native::Color;
+use crate::Color;
 
 /// The style of a stroke.
 #[derive(Debug, Clone)]
@@ -77,16 +77,6 @@ impl Default for LineCap {
     }
 }
 
-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)]
@@ -105,16 +95,6 @@ impl Default for LineJoin {
     }
 }
 
-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,
-        }
-    }
-}
-
 /// The dash pattern used when stroking the line.
 #[derive(Debug, Clone, Copy, Default)]
 pub struct LineDash<'a> {
diff --git a/graphics/src/widget/canvas/style.rs b/native/src/widget/canvas/style.rs
index 6794f2e7..2642fdb8 100644
--- a/graphics/src/widget/canvas/style.rs
+++ b/native/src/widget/canvas/style.rs
@@ -1,4 +1,5 @@
-use crate::{Color, Gradient};
+use crate::widget::canvas::Gradient;
+use crate::Color;
 
 /// The coloring style of some drawing.
 #[derive(Debug, Clone, PartialEq)]
diff --git a/graphics/src/widget/canvas/text.rs b/native/src/widget/canvas/text.rs
index 8c0b2dfb..8c0b2dfb 100644
--- a/graphics/src/widget/canvas/text.rs
+++ b/native/src/widget/canvas/text.rs
diff --git a/graphics/src/widget/qr_code.rs b/renderer/src/widget/qr_code.rs
index 12ce5b1f..aae4ec88 100644
--- a/graphics/src/widget/qr_code.rs
+++ b/renderer/src/widget/qr_code.rs
@@ -1,7 +1,8 @@
 //! Encode and display information in a QR code.
-use crate::renderer::{self, Renderer};
 use crate::widget::canvas;
-use crate::Backend;
+use crate::Renderer;
+
+use iced_graphics::renderer;
 
 use iced_native::layout;
 use iced_native::widget::Tree;
@@ -48,10 +49,7 @@ impl<'a> QRCode<'a> {
     }
 }
 
-impl<'a, Message, B, T> Widget<Message, Renderer<B, T>> for QRCode<'a>
-where
-    B: Backend,
-{
+impl<'a, Message, Theme> Widget<Message, Renderer<Theme>> for QRCode<'a> {
     fn width(&self) -> Length {
         Length::Shrink
     }
@@ -62,7 +60,7 @@ where
 
     fn layout(
         &self,
-        _renderer: &Renderer<B, T>,
+        _renderer: &Renderer<Theme>,
         _limits: &layout::Limits,
     ) -> layout::Node {
         let side_length = (self.state.width + 2 * QUIET_ZONE) as f32
@@ -74,8 +72,8 @@ where
     fn draw(
         &self,
         _state: &Tree,
-        renderer: &mut Renderer<B, T>,
-        _theme: &T,
+        renderer: &mut Renderer<Theme>,
+        _theme: &Theme,
         _style: &renderer::Style,
         layout: Layout<'_>,
         _cursor_position: Point,
@@ -87,50 +85,52 @@ where
         let side_length = self.state.width + 2 * QUIET_ZONE;
 
         // Reuse cache if possible
-        let geometry = self.state.cache.draw(bounds.size(), |frame| {
-            // Scale units to cell size
-            frame.scale(f32::from(self.cell_size));
-
-            // Draw background
-            frame.fill_rectangle(
-                Point::ORIGIN,
-                Size::new(side_length as f32, side_length as f32),
-                self.light,
-            );
-
-            // Avoid drawing on the quiet zone
-            frame.translate(Vector::new(QUIET_ZONE as f32, QUIET_ZONE as f32));
-
-            // Draw contents
-            self.state
-                .contents
-                .iter()
-                .enumerate()
-                .filter(|(_, value)| **value == qrcode::Color::Dark)
-                .for_each(|(index, _)| {
-                    let row = index / self.state.width;
-                    let column = index % self.state.width;
-
-                    frame.fill_rectangle(
-                        Point::new(column as f32, row as f32),
-                        Size::UNIT,
-                        self.dark,
-                    );
-                });
-        });
+        let geometry =
+            self.state.cache.draw(renderer, bounds.size(), |frame| {
+                // Scale units to cell size
+                frame.scale(f32::from(self.cell_size));
+
+                // Draw background
+                frame.fill_rectangle(
+                    Point::ORIGIN,
+                    Size::new(side_length as f32, side_length as f32),
+                    self.light,
+                );
+
+                // Avoid drawing on the quiet zone
+                frame.translate(Vector::new(
+                    QUIET_ZONE as f32,
+                    QUIET_ZONE as f32,
+                ));
+
+                // Draw contents
+                self.state
+                    .contents
+                    .iter()
+                    .enumerate()
+                    .filter(|(_, value)| **value == qrcode::Color::Dark)
+                    .for_each(|(index, _)| {
+                        let row = index / self.state.width;
+                        let column = index % self.state.width;
+
+                        frame.fill_rectangle(
+                            Point::new(column as f32, row as f32),
+                            Size::UNIT,
+                            self.dark,
+                        );
+                    });
+            });
 
         let translation = Vector::new(bounds.x, bounds.y);
 
         renderer.with_translation(translation, |renderer| {
-            renderer.draw_primitive(geometry.into_primitive());
+            renderer.draw_primitive(geometry.0);
         });
     }
 }
 
-impl<'a, Message, B, T> From<QRCode<'a>>
-    for Element<'a, Message, Renderer<B, T>>
-where
-    B: Backend,
+impl<'a, Message, Theme> From<QRCode<'a>>
+    for Element<'a, Message, Renderer<Theme>>
 {
     fn from(qr_code: QRCode<'a>) -> Self {
         Self::new(qr_code)
diff --git a/graphics/src/widget.rs b/wgpu/src/widget.rs
index e7fab97c..8d05041e 100644
--- a/graphics/src/widget.rs
+++ b/wgpu/src/widget.rs
@@ -1,4 +1,5 @@
 //! Use the graphical widgets supported out-of-the-box.
+
 #[cfg(feature = "canvas")]
 #[cfg_attr(docsrs, doc(cfg(feature = "canvas")))]
 pub mod canvas;
@@ -6,11 +7,3 @@ pub mod canvas;
 #[cfg(feature = "canvas")]
 #[doc(no_inline)]
 pub use canvas::Canvas;
-
-#[cfg(feature = "qr_code")]
-#[cfg_attr(docsrs, doc(cfg(feature = "qr_code")))]
-pub mod qr_code;
-
-#[cfg(feature = "qr_code")]
-#[doc(no_inline)]
-pub use qr_code::QRCode;
diff --git a/graphics/src/widget/canvas/cache.rs b/wgpu/src/widget/canvas/cache.rs
index 52217bbb..09b26b90 100644
--- a/graphics/src/widget/canvas/cache.rs
+++ b/wgpu/src/widget/canvas/cache.rs
@@ -4,7 +4,9 @@ use crate::Primitive;
 use iced_native::Size;
 use std::{cell::RefCell, sync::Arc};
 
+#[derive(Default)]
 enum State {
+    #[default]
     Empty,
     Filled {
         bounds: Size,
@@ -12,11 +14,6 @@ enum State {
     },
 }
 
-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
@@ -62,8 +59,8 @@ impl Cache {
         } = self.state.borrow().deref()
         {
             if *cached_bounds == bounds {
-                return Geometry::from_primitive(Primitive::Cached {
-                    cache: primitive.clone(),
+                return Geometry::from_primitive(Primitive::Cache {
+                    content: primitive.clone(),
                 });
             }
         }
@@ -71,18 +68,14 @@ impl Cache {
         let mut frame = Frame::new(bounds);
         draw_fn(&mut frame);
 
-        let primitive = {
-            let geometry = frame.into_geometry();
-
-            Arc::new(geometry.into_primitive())
-        };
+        let primitive = Arc::new(frame.into_primitive());
 
         *self.state.borrow_mut() = State::Filled {
             bounds,
             primitive: primitive.clone(),
         };
 
-        Geometry::from_primitive(Primitive::Cached { cache: primitive })
+        Geometry::from_primitive(Primitive::Cache { content: primitive })
     }
 }
 
diff --git a/graphics/src/widget/canvas/frame.rs b/wgpu/src/widget/canvas/frame.rs
index d68548ae..987570ec 100644
--- a/graphics/src/widget/canvas/frame.rs
+++ b/wgpu/src/widget/canvas/frame.rs
@@ -1,9 +1,10 @@
-use crate::gradient::Gradient;
-use crate::triangle;
-use crate::widget::canvas::{path, Fill, Geometry, Path, Stroke, Style, Text};
-use crate::Primitive;
+use crate::primitive::{self, Primitive};
+use crate::widget::canvas::fill::{self, Fill};
+use crate::widget::canvas::{
+    LineCap, LineDash, LineJoin, Path, Stroke, Style, Text,
+};
 
-use iced_native::{Point, Rectangle, Size, Vector};
+use iced_native::{Gradient, Point, Rectangle, Size, Vector};
 
 use lyon::geom::euclid;
 use lyon::tessellation;
@@ -23,9 +24,9 @@ pub struct Frame {
 }
 
 enum Buffer {
-    Solid(tessellation::VertexBuffers<triangle::ColoredVertex2D, u32>),
+    Solid(tessellation::VertexBuffers<primitive::ColoredVertex2D, u32>),
     Gradient(
-        tessellation::VertexBuffers<triangle::Vertex2D, u32>,
+        tessellation::VertexBuffers<primitive::Vertex2D, u32>,
         Gradient,
     ),
 }
@@ -196,8 +197,8 @@ impl Frame {
             .buffers
             .get_fill(&self.transforms.current.transform_style(style));
 
-        let options =
-            tessellation::FillOptions::default().with_fill_rule(rule.into());
+        let options = tessellation::FillOptions::default()
+            .with_fill_rule(into_fill_rule(rule));
 
         if self.transforms.current.is_identity {
             self.fill_tessellator.tessellate_path(
@@ -206,7 +207,7 @@ impl Frame {
                 buffer.as_mut(),
             )
         } else {
-            let path = path.transformed(&self.transforms.current.raw);
+            let path = path.transform(&self.transforms.current.raw);
 
             self.fill_tessellator.tessellate_path(
                 path.raw(),
@@ -241,8 +242,8 @@ impl Frame {
                 lyon::math::Vector::new(size.width, size.height),
             );
 
-        let options =
-            tessellation::FillOptions::default().with_fill_rule(rule.into());
+        let options = tessellation::FillOptions::default()
+            .with_fill_rule(into_fill_rule(rule));
 
         self.fill_tessellator
             .tessellate_rectangle(
@@ -264,14 +265,14 @@ impl Frame {
 
         let mut options = tessellation::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();
+        options.start_cap = into_line_cap(stroke.line_cap);
+        options.end_cap = into_line_cap(stroke.line_cap);
+        options.line_join = into_line_join(stroke.line_join);
 
         let path = if stroke.line_dash.segments.is_empty() {
             Cow::Borrowed(path)
         } else {
-            Cow::Owned(path::dashed(path, stroke.line_dash))
+            Cow::Owned(dashed(path, stroke.line_dash))
         };
 
         if self.transforms.current.is_identity {
@@ -281,7 +282,7 @@ impl Frame {
                 buffer.as_mut(),
             )
         } else {
-            let path = path.transformed(&self.transforms.current.raw);
+            let path = path.transform(&self.transforms.current.raw);
 
             self.stroke_tessellator.tessellate_path(
                 path.raw(),
@@ -344,10 +345,18 @@ impl Frame {
     /// operations in different coordinate systems.
     #[inline]
     pub fn with_save(&mut self, f: impl FnOnce(&mut Frame)) {
-        self.transforms.previous.push(self.transforms.current);
+        self.push_transform();
 
         f(self);
 
+        self.pop_transform();
+    }
+
+    pub fn push_transform(&mut self) {
+        self.transforms.previous.push(self.transforms.current);
+    }
+
+    pub fn pop_transform(&mut self) {
         self.transforms.current = self.transforms.previous.pop().unwrap();
     }
 
@@ -363,14 +372,19 @@ impl Frame {
 
         f(&mut frame);
 
+        let translation = Vector::new(region.x, region.y);
+
+        self.clip(frame, translation);
+    }
+
+    pub fn clip(&mut self, frame: Frame, translation: Vector) {
+        let size = frame.size();
         let primitives = frame.into_primitives();
 
         let (text, meshes) = primitives
             .into_iter()
             .partition(|primitive| matches!(primitive, Primitive::Text { .. }));
 
-        let translation = Vector::new(region.x, region.y);
-
         self.primitives.push(Primitive::Group {
             primitives: vec![
                 Primitive::Translate {
@@ -380,7 +394,7 @@ impl Frame {
                 Primitive::Translate {
                     translation,
                     content: Box::new(Primitive::Clip {
-                        bounds: Rectangle::with_size(region.size()),
+                        bounds: Rectangle::with_size(size),
                         content: Box::new(Primitive::Group {
                             primitives: text,
                         }),
@@ -423,11 +437,11 @@ impl Frame {
         self.transforms.current.is_identity = false;
     }
 
-    /// Produces the [`Geometry`] representing everything drawn on the [`Frame`].
-    pub fn into_geometry(self) -> Geometry {
-        Geometry::from_primitive(Primitive::Group {
+    /// Produces the [`Primitive`] representing everything drawn on the [`Frame`].
+    pub fn into_primitive(self) -> Primitive {
+        Primitive::Group {
             primitives: self.into_primitives(),
-        })
+        }
     }
 
     fn into_primitives(mut self) -> Vec<Primitive> {
@@ -436,7 +450,7 @@ impl Frame {
                 Buffer::Solid(buffer) => {
                     if !buffer.indices.is_empty() {
                         self.primitives.push(Primitive::SolidMesh {
-                            buffers: triangle::Mesh2D {
+                            buffers: primitive::Mesh2D {
                                 vertices: buffer.vertices,
                                 indices: buffer.indices,
                             },
@@ -447,7 +461,7 @@ impl Frame {
                 Buffer::Gradient(buffer, gradient) => {
                     if !buffer.indices.is_empty() {
                         self.primitives.push(Primitive::GradientMesh {
-                            buffers: triangle::Mesh2D {
+                            buffers: primitive::Mesh2D {
                                 vertices: buffer.vertices,
                                 indices: buffer.indices,
                             },
@@ -465,31 +479,31 @@ impl Frame {
 
 struct Vertex2DBuilder;
 
-impl tessellation::FillVertexConstructor<triangle::Vertex2D>
+impl tessellation::FillVertexConstructor<primitive::Vertex2D>
     for Vertex2DBuilder
 {
     fn new_vertex(
         &mut self,
         vertex: tessellation::FillVertex<'_>,
-    ) -> triangle::Vertex2D {
+    ) -> primitive::Vertex2D {
         let position = vertex.position();
 
-        triangle::Vertex2D {
+        primitive::Vertex2D {
             position: [position.x, position.y],
         }
     }
 }
 
-impl tessellation::StrokeVertexConstructor<triangle::Vertex2D>
+impl tessellation::StrokeVertexConstructor<primitive::Vertex2D>
     for Vertex2DBuilder
 {
     fn new_vertex(
         &mut self,
         vertex: tessellation::StrokeVertex<'_, '_>,
-    ) -> triangle::Vertex2D {
+    ) -> primitive::Vertex2D {
         let position = vertex.position();
 
-        triangle::Vertex2D {
+        primitive::Vertex2D {
             position: [position.x, position.y],
         }
     }
@@ -497,34 +511,99 @@ impl tessellation::StrokeVertexConstructor<triangle::Vertex2D>
 
 struct TriangleVertex2DBuilder([f32; 4]);
 
-impl tessellation::FillVertexConstructor<triangle::ColoredVertex2D>
+impl tessellation::FillVertexConstructor<primitive::ColoredVertex2D>
     for TriangleVertex2DBuilder
 {
     fn new_vertex(
         &mut self,
         vertex: tessellation::FillVertex<'_>,
-    ) -> triangle::ColoredVertex2D {
+    ) -> primitive::ColoredVertex2D {
         let position = vertex.position();
 
-        triangle::ColoredVertex2D {
+        primitive::ColoredVertex2D {
             position: [position.x, position.y],
             color: self.0,
         }
     }
 }
 
-impl tessellation::StrokeVertexConstructor<triangle::ColoredVertex2D>
+impl tessellation::StrokeVertexConstructor<primitive::ColoredVertex2D>
     for TriangleVertex2DBuilder
 {
     fn new_vertex(
         &mut self,
         vertex: tessellation::StrokeVertex<'_, '_>,
-    ) -> triangle::ColoredVertex2D {
+    ) -> primitive::ColoredVertex2D {
         let position = vertex.position();
 
-        triangle::ColoredVertex2D {
+        primitive::ColoredVertex2D {
             position: [position.x, position.y],
             color: self.0,
         }
     }
 }
+
+fn into_line_join(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,
+    }
+}
+
+fn into_line_cap(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,
+    }
+}
+
+fn into_fill_rule(rule: fill::Rule) -> lyon::tessellation::FillRule {
+    match rule {
+        fill::Rule::NonZero => lyon::tessellation::FillRule::NonZero,
+        fill::Rule::EvenOdd => lyon::tessellation::FillRule::EvenOdd,
+    }
+}
+
+pub(super) fn dashed(path: &Path, line_dash: LineDash<'_>) -> Path {
+    use lyon::algorithms::walk::{
+        walk_along_path, RepeatedPattern, WalkerEvent,
+    };
+    use lyon::path::iterator::PathIterator;
+
+    Path::new(|builder| {
+        let segments_odd = (line_dash.segments.len() % 2 == 1)
+            .then(|| [line_dash.segments, line_dash.segments].concat());
+
+        let mut draw_line = false;
+
+        walk_along_path(
+            path.raw().iter().flattened(0.01),
+            0.0,
+            lyon::tessellation::StrokeOptions::DEFAULT_TOLERANCE,
+            &mut RepeatedPattern {
+                callback: |event: WalkerEvent<'_>| {
+                    let point = Point {
+                        x: event.position.x,
+                        y: event.position.y,
+                    };
+
+                    if draw_line {
+                        builder.line_to(point);
+                    } else {
+                        builder.move_to(point);
+                    }
+
+                    draw_line = !draw_line;
+
+                    true
+                },
+                index: line_dash.offset,
+                intervals: segments_odd
+                    .as_deref()
+                    .unwrap_or(line_dash.segments),
+            },
+        );
+    })
+}
diff --git a/graphics/src/widget/canvas/geometry.rs b/wgpu/src/widget/canvas/geometry.rs
index e8ac621d..e8ac621d 100644
--- a/graphics/src/widget/canvas/geometry.rs
+++ b/wgpu/src/widget/canvas/geometry.rs