Readjusted namespaces, removed Geometry example as it's no longer relevant.

14 files changed, 247 insertions, 223 deletions

diff --git a/graphics/src/gradient.rs b/graphics/src/gradient.rs
index 0c394e8b..33453c67 100644
--- a/graphics/src/gradient.rs
+++ b/graphics/src/gradient.rs
@@ -1,4 +1,6 @@
 //! For creating a Gradient.
+mod linear;
+
 use iced_native::Color;
 pub use crate::gradient::linear::Linear;
 use crate::Point;
@@ -28,76 +30,3 @@ impl Gradient {
     }
 }
 
-/// Linear gradient builder & definition.
-pub mod linear {
-    use crate::gradient::{ColorStop, Gradient};
-    use crate::{Color, Point};
-
-    /// A linear gradient that can be used in the style of [`super::Fill`] or [`super::Stroke`].
-    #[derive(Debug, Clone, PartialEq)]
-    pub struct Linear {
-        /// The point where the linear gradient begins.
-        pub start: Point,
-        /// The point where the linear gradient ends.
-        pub end: Point,
-        /// [`ColorStop`]s along the linear gradient path.
-        pub color_stops: Vec<ColorStop>,
-    }
-
-    /// A [`Linear`] builder.
-    #[derive(Debug)]
-    pub struct Builder {
-        start: Point,
-        end: Point,
-        stops: Vec<(f32, Color)>,
-        valid: bool,
-    }
-
-    impl Builder {
-        /// Creates a new [`Builder`].
-        pub fn new(start: Point, end: Point) -> Self {
-            Self {
-                start,
-                end,
-                stops: vec![],
-                valid: true,
-            }
-        }
-
-        /// Adds a new stop, defined by an offset and a color, to the gradient.
-        ///
-        /// `offset` must be between `0.0` and `1.0`.
-        pub fn add_stop(mut self, offset: f32, color: Color) -> Self {
-            if !(0.0..=1.0).contains(&offset) {
-                self.valid = false;
-            }
-
-            self.stops.push((offset, color));
-            self
-        }
-
-        /// Builds the linear [`Gradient`] of this [`Builder`].
-        ///
-        /// Returns `None` if no stops were added to the builder or
-        /// if stops not between 0.0 and 1.0 were added.
-        pub fn build(self) -> Option<Gradient> {
-            if self.stops.is_empty() || !self.valid {
-                return None;
-            }
-
-            let mut stops: Vec<ColorStop> = self.stops.clone().into_iter().map(|f| ColorStop {
-                offset: f.0,
-                color: f.1
-            }).collect();
-
-            stops.sort_by(|a, b| a.offset.partial_cmp(&b.offset).unwrap());
-
-            Some(Gradient::Linear(Linear {
-                start: self.start,
-                end: self.end,
-                color_stops: stops
-            }))
-        }
-    }
-}
-
diff --git a/graphics/src/gradient/linear.rs b/graphics/src/gradient/linear.rs
new file mode 100644
index 00000000..00f94adc
--- /dev/null
+++ b/graphics/src/gradient/linear.rs
@@ -0,0 +1,71 @@
+//! Linear gradient builder & definition.
+
+use crate::gradient::{ColorStop, Gradient};
+use crate::{Color, Point};
+
+/// A linear gradient that can be used in the style of [`super::Fill`] or [`super::Stroke`].
+#[derive(Debug, Clone, PartialEq)]
+pub struct Linear {
+    /// The point where the linear gradient begins.
+    pub start: Point,
+    /// The point where the linear gradient ends.
+    pub end: Point,
+    /// [`ColorStop`]s along the linear gradient path.
+    pub color_stops: Vec<ColorStop>,
+}
+
+/// A [`Linear`] builder.
+#[derive(Debug)]
+pub struct Builder {
+    start: Point,
+    end: Point,
+    stops: Vec<(f32, Color)>,
+    valid: bool,
+}
+
+impl Builder {
+    /// Creates a new [`Builder`].
+    pub fn new(start: Point, end: Point) -> Self {
+        Self {
+            start,
+            end,
+            stops: vec![],
+            valid: true,
+        }
+    }
+
+    /// Adds a new stop, defined by an offset and a color, to the gradient.
+    ///
+    /// `offset` must be between `0.0` and `1.0`.
+    pub fn add_stop(mut self, offset: f32, color: Color) -> Self {
+        if !(0.0..=1.0).contains(&offset) {
+            self.valid = false;
+        }
+
+        self.stops.push((offset, color));
+        self
+    }
+
+    /// Builds the linear [`Gradient`] of this [`Builder`].
+    ///
+    /// Returns `None` if no stops were added to the builder or
+    /// if stops not between 0.0 and 1.0 were added.
+    pub fn build(self) -> Option<Gradient> {
+        if self.stops.is_empty() || !self.valid {
+            return None;
+        }
+
+        let mut stops: Vec<ColorStop> = self.stops.clone().into_iter().map(|f| ColorStop {
+            offset: f.0,
+            color: f.1
+        }).collect();
+
+        stops.sort_by(|a, b| a.offset.partial_cmp(&b.offset).unwrap());
+
+        Some(Gradient::Linear(Linear {
+            start: self.start,
+            end: self.end,
+            color_stops: stops
+        }))
+    }
+}
\ No newline at end of file
diff --git a/graphics/src/layer.rs b/graphics/src/layer.rs
index 096c50dc..65e70cb3 100644
--- a/graphics/src/layer.rs
+++ b/graphics/src/layer.rs
@@ -1,13 +1,17 @@
 //! Organize rendering primitives into a flattened list of layers.
+pub mod mesh;
+mod quad;
+mod text;
+mod image;
+
 use crate::alignment;
-use crate::triangle;
 use crate::{
     Background, Font, Point, Primitive, Rectangle, Size, Vector, Viewport,
 };
-
-use iced_native::image;
-use iced_native::svg;
-use crate::shader::Shader;
+pub use crate::layer::image::Image;
+pub use crate::layer::mesh::Mesh;
+pub use crate::layer::quad::Quad;
+pub use crate::layer::text::Text;
 
 /// A group of primitives that should be clipped together.
 #[derive(Debug)]
@@ -163,7 +167,7 @@ impl<'a> Layer<'a> {
             Primitive::Mesh2D {
                 buffers,
                 size,
-                shader,
+                style,
             } => {
                 let layer = &mut layers[current_layer];
 
@@ -179,7 +183,7 @@ impl<'a> Layer<'a> {
                             origin: Point::new(translation.x, translation.y),
                             buffers,
                             clip_bounds,
-                            shader,
+                            style,
                         }
                     );
                 }
@@ -242,99 +246,6 @@ impl<'a> Layer<'a> {
     }
 }
 
-/// A colored rectangle with a border.
-///
-/// This type can be directly uploaded to GPU memory.
-#[derive(Debug, Clone, Copy)]
-#[repr(C)]
-pub struct Quad {
-    /// The position of the [`Quad`].
-    pub position: [f32; 2],
-
-    /// The size of the [`Quad`].
-    pub size: [f32; 2],
-
-    /// The color of the [`Quad`], in __linear RGB__.
-    pub color: [f32; 4],
-
-    /// The border color of the [`Quad`], in __linear RGB__.
-    pub border_color: [f32; 4],
-
-    /// The border radius of the [`Quad`].
-    pub border_radius: f32,
-
-    /// The border width of the [`Quad`].
-    pub border_width: f32,
-}
-
-/// A mesh of triangles.
-#[derive(Debug, Clone, Copy)]
-pub struct Mesh<'a> {
-    /// The origin of the vertices of the [`Mesh`].
-    pub origin: Point,
-
-    /// The vertex and index buffers of the [`Mesh`].
-    pub buffers: &'a triangle::Mesh2D,
-
-    /// The clipping bounds of the [`Mesh`].
-    pub clip_bounds: Rectangle<f32>,
-
-    /// The shader of the [`Mesh`].
-    pub shader: &'a Shader,
-}
-
-/// A paragraph of text.
-#[derive(Debug, Clone, Copy)]
-pub struct Text<'a> {
-    /// The content of the [`Text`].
-    pub content: &'a str,
-
-    /// The layout bounds of the [`Text`].
-    pub bounds: Rectangle,
-
-    /// The color of the [`Text`], in __linear RGB_.
-    pub color: [f32; 4],
-
-    /// 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: alignment::Horizontal,
-
-    /// The vertical alignment of the [`Text`].
-    pub vertical_alignment: alignment::Vertical,
-}
-
-/// A raster or vector image.
-#[derive(Debug, Clone)]
-pub enum Image {
-    /// A raster image.
-    Raster {
-        /// The handle of a raster image.
-        handle: image::Handle,
-
-        /// The bounds of the image.
-        bounds: Rectangle,
-    },
-    /// A vector image.
-    Vector {
-        /// The handle of a vector image.
-        handle: svg::Handle,
-
-        /// The bounds of the image.
-        bounds: Rectangle,
-    },
-}
-
-#[allow(unsafe_code)]
-unsafe impl bytemuck::Zeroable for Quad {}
-
-#[allow(unsafe_code)]
-unsafe impl bytemuck::Pod for Quad {}
-
 /// Returns the number of total vertices & total indices of all [`Mesh`]es.
 pub fn attribute_count_of<'a>(meshes: &'a [Mesh<'a>]) -> (usize, usize) {
     meshes
diff --git a/graphics/src/layer/image.rs b/graphics/src/layer/image.rs
new file mode 100644
index 00000000..387b60ed
--- /dev/null
+++ b/graphics/src/layer/image.rs
@@ -0,0 +1,23 @@
+use iced_native::{image, svg};
+use crate::Rectangle;
+
+/// A raster or vector image.
+#[derive(Debug, Clone)]
+pub enum Image {
+    /// A raster image.
+    Raster {
+        /// The handle of a raster image.
+        handle: image::Handle,
+
+        /// The bounds of the image.
+        bounds: Rectangle,
+    },
+    /// A vector image.
+    Vector {
+        /// The handle of a vector image.
+        handle: svg::Handle,
+
+        /// The bounds of the image.
+        bounds: Rectangle,
+    },
+}
\ No newline at end of file
diff --git a/graphics/src/layer/mesh.rs b/graphics/src/layer/mesh.rs
new file mode 100644
index 00000000..a025675a
--- /dev/null
+++ b/graphics/src/layer/mesh.rs
@@ -0,0 +1,39 @@
+//! A collection of triangle primitives.
+
+use crate::{Color, Point, Rectangle, triangle};
+use crate::gradient::Gradient;
+
+/// A mesh of triangles.
+#[derive(Debug, Clone, Copy)]
+pub struct Mesh<'a> {
+    /// The origin of the vertices of the [`Mesh`].
+    pub origin: Point,
+
+    /// The vertex and index buffers of the [`Mesh`].
+    pub buffers: &'a triangle::Mesh2D,
+
+    /// The clipping bounds of the [`Mesh`].
+    pub clip_bounds: Rectangle<f32>,
+
+    /// The shader of the [`Mesh`].
+    pub style: &'a Style,
+}
+
+#[derive(Debug, Clone)]
+/// Supported shaders for primitives.
+pub enum Style {
+    /// Fill a primitive with a solid color.
+    Solid(Color),
+    /// Fill a primitive with an interpolated color.
+    Gradient(Gradient)
+}
+
+impl <'a> Into<Style> for Gradient {
+    fn into(self) -> Style {
+        match self {
+            Gradient::Linear(linear) => {
+                Style::Gradient(Gradient::Linear(linear))
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/graphics/src/layer/quad.rs b/graphics/src/layer/quad.rs
new file mode 100644
index 00000000..4380fb6c
--- /dev/null
+++ b/graphics/src/layer/quad.rs
@@ -0,0 +1,30 @@
+/// A colored rectangle with a border.
+///
+/// This type can be directly uploaded to GPU memory.
+#[derive(Debug, Clone, Copy)]
+#[repr(C)]
+pub struct Quad {
+    /// The position of the [`Quad`].
+    pub position: [f32; 2],
+
+    /// The size of the [`Quad`].
+    pub size: [f32; 2],
+
+    /// The color of the [`Quad`], in __linear RGB__.
+    pub color: [f32; 4],
+
+    /// The border color of the [`Quad`], in __linear RGB__.
+    pub border_color: [f32; 4],
+
+    /// The border radius of the [`Quad`].
+    pub border_radius: f32,
+
+    /// The border width of the [`Quad`].
+    pub border_width: f32,
+}
+
+#[allow(unsafe_code)]
+unsafe impl bytemuck::Zeroable for Quad {}
+
+#[allow(unsafe_code)]
+unsafe impl bytemuck::Pod for Quad {}
\ No newline at end of file
diff --git a/graphics/src/layer/text.rs b/graphics/src/layer/text.rs
new file mode 100644
index 00000000..b6dd4b7f
--- /dev/null
+++ b/graphics/src/layer/text.rs
@@ -0,0 +1,26 @@
+use crate::{alignment, Font, Rectangle};
+
+/// A paragraph of text.
+#[derive(Debug, Clone, Copy)]
+pub struct Text<'a> {
+    /// The content of the [`Text`].
+    pub content: &'a str,
+
+    /// The layout bounds of the [`Text`].
+    pub bounds: Rectangle,
+
+    /// The color of the [`Text`], in __linear RGB_.
+    pub color: [f32; 4],
+
+    /// 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: alignment::Horizontal,
+
+    /// The vertical alignment of the [`Text`].
+    pub vertical_alignment: alignment::Vertical,
+}
\ No newline at end of file
diff --git a/graphics/src/lib.rs b/graphics/src/lib.rs
index ce9b1b07..0d29416c 100644
--- a/graphics/src/lib.rs
+++ b/graphics/src/lib.rs
@@ -35,7 +35,6 @@ pub mod renderer;
 pub mod triangle;
 pub mod widget;
 pub mod window;
-pub mod shader;
 pub mod gradient;
 
 pub use antialiasing::Antialiasing;
diff --git a/graphics/src/primitive.rs b/graphics/src/primitive.rs
index 4f79a74c..10c86ad2 100644
--- a/graphics/src/primitive.rs
+++ b/graphics/src/primitive.rs
@@ -2,10 +2,11 @@ use iced_native::image;
 use iced_native::svg;
 use iced_native::{Background, Color, Font, Rectangle, Size, Vector};
 
-use crate::{alignment, shader};
+use crate::{alignment, layer};
 use crate::triangle;
 
 use std::sync::Arc;
+use layer::mesh;
 
 /// A rendering primitive.
 #[derive(Debug, Clone)]
@@ -90,7 +91,7 @@ pub enum Primitive {
         size: Size,
 
         /// The shader of the mesh
-        shader: shader::Shader,
+        style: mesh::Style,
     },
     /// A cached primitive.
     ///
diff --git a/graphics/src/shader.rs b/graphics/src/shader.rs
deleted file mode 100644
index 69679e9b..00000000
--- a/graphics/src/shader.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-//! Supported shaders;
-
-use crate::Color;
-use crate::gradient::Gradient;
-
-#[derive(Debug, Clone)]
-/// Supported shaders for primitives.
-pub enum Shader {
-    /// Fill a primitive with a solid color.
-    Solid(Color),
-    /// Fill a primitive with an interpolated color.
-    Gradient(Gradient)
-}
-
-impl <'a> Into<Shader> for Gradient {
-    fn into(self) -> Shader {
-        match self {
-            Gradient::Linear(linear) => {
-                Shader::Gradient(Gradient::Linear(linear))
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/graphics/src/widget/canvas.rs b/graphics/src/widget/canvas.rs
index f6929e97..6ed3a12f 100644
--- a/graphics/src/widget/canvas.rs
+++ b/graphics/src/widget/canvas.rs
@@ -9,17 +9,17 @@ pub mod path;
 
 mod cache;
 mod cursor;
-mod fill;
 mod frame;
 mod geometry;
 mod program;
-mod stroke;
 mod text;
+pub mod fill;
+pub mod stroke;
 
 pub use cache::Cache;
 pub use cursor::Cursor;
 pub use event::Event;
-pub use fill::{Fill, FillRule, Style};
+pub use fill::{Fill, FillRule};
 pub use frame::Frame;
 pub use geometry::Geometry;
 pub use path::Path;
@@ -37,6 +37,8 @@ use iced_native::{
     Clipboard, Element, Length, Point, Rectangle, Shell, Size, Vector, Widget,
 };
 
+pub use crate::gradient::Gradient;
+
 use std::marker::PhantomData;
 
 /// A widget capable of drawing 2D graphics.
diff --git a/graphics/src/widget/canvas/fill.rs b/graphics/src/widget/canvas/fill.rs
index 6f10505c..55cb3966 100644
--- a/graphics/src/widget/canvas/fill.rs
+++ b/graphics/src/widget/canvas/fill.rs
@@ -1,6 +1,8 @@
-use iced_native::Color;
+//! Fill [crate::widget::canvas::Geometry] with a certain style.
+
 use crate::gradient::Gradient;
-use crate::shader::Shader;
+use crate::layer::mesh;
+use iced_native::Color;
 
 /// The style used to fill geometry.
 #[derive(Debug, Clone)]
@@ -21,7 +23,7 @@ pub struct Fill<'a> {
     pub rule: FillRule,
 }
 
-impl <'a> Default for Fill<'a> {
+impl<'a> Default for Fill<'a> {
     fn default() -> Fill<'a> {
         Fill {
             style: Style::Solid(Color::BLACK),
@@ -48,11 +50,11 @@ pub enum Style<'a> {
     Gradient(&'a Gradient),
 }
 
-impl <'a> Into<Shader> for Style<'a> {
-    fn into(self) -> Shader {
+impl<'a> Into<mesh::Style> for Style<'a> {
+    fn into(self) -> mesh::Style {
         match self {
-            Style::Solid(color) => Shader::Solid(color),
-            Style::Gradient(gradient) => gradient.clone().into()
+            Style::Solid(color) => mesh::Style::Solid(color),
+            Style::Gradient(gradient) => gradient.clone().into(),
         }
     }
 }
diff --git a/graphics/src/widget/canvas/frame.rs b/graphics/src/widget/canvas/frame.rs
index 30239b2a..6517d62a 100644
--- a/graphics/src/widget/canvas/frame.rs
+++ b/graphics/src/widget/canvas/frame.rs
@@ -6,7 +6,7 @@ use crate::triangle;
 use crate::widget::canvas::{path, Fill, Geometry, Path, Stroke, Text};
 use crate::Primitive;
 
-use crate::shader::Shader;
+use crate::layer::mesh;
 use crate::triangle::Vertex2D;
 use lyon::tessellation;
 use lyon::tessellation::geometry_builder::Positions;
@@ -17,7 +17,10 @@ use lyon::tessellation::geometry_builder::Positions;
 #[allow(missing_debug_implementations)]
 pub struct Frame {
     size: Size,
-    buffers: Vec<(tessellation::VertexBuffers<lyon::math::Point, u32>, Shader)>,
+    buffers: Vec<(
+        tessellation::VertexBuffers<lyon::math::Point, u32>,
+        mesh::Style,
+    )>,
     primitives: Vec<Primitive>,
     transforms: Transforms,
     fill_tessellator: tessellation::FillTessellator,
@@ -109,7 +112,8 @@ impl Frame {
                 &options,
                 &mut buffers,
             )
-        }.expect("Tessellate path.");
+        }
+        .expect("Tessellate path.");
 
         self.buffers.push((buf, style.into()))
     }
@@ -126,7 +130,8 @@ impl Frame {
 
         let mut buf = tessellation::VertexBuffers::new();
 
-        let mut buffers = tessellation::BuffersBuilder::new(&mut buf, Positions);
+        let mut buffers =
+            tessellation::BuffersBuilder::new(&mut buf, Positions);
 
         let top_left =
             self.transforms.current.raw.transform_point(
@@ -159,7 +164,8 @@ impl Frame {
 
         let mut buf = tessellation::VertexBuffers::new();
 
-        let mut buffers = tessellation::BuffersBuilder::new(&mut buf, Positions);
+        let mut buffers =
+            tessellation::BuffersBuilder::new(&mut buf, Positions);
 
         let mut options = tessellation::StrokeOptions::default();
         options.line_width = stroke.width;
@@ -187,7 +193,8 @@ impl Frame {
                 &options,
                 &mut buffers,
             )
-        }.expect("Stroke path");
+        }
+        .expect("Stroke path");
 
         self.buffers.push((buf, stroke.style.into()))
     }
@@ -331,7 +338,7 @@ impl Frame {
     }
 
     fn into_primitives(mut self) -> Vec<Primitive> {
-        for (buffer, shader) in self.buffers {
+        for (buffer, style) in self.buffers {
             if !buffer.indices.is_empty() {
                 self.primitives.push(Primitive::Mesh2D {
                     buffers: triangle::Mesh2D {
@@ -339,7 +346,7 @@ impl Frame {
                         indices: buffer.indices,
                     },
                     size: self.size,
-                    shader,
+                    style,
                 })
             }
         }
@@ -350,5 +357,10 @@ impl Frame {
 
 /// Converts from [`lyon::math::Point`] to [`Vertex2D`]. Used for generating primitives.
 fn vertices_from(points: Vec<lyon::math::Point>) -> Vec<Vertex2D> {
-    points.iter().map(|p| Vertex2D { position: [p.x, p.y]}).collect()
-}
\ No newline at end of file
+    points
+        .iter()
+        .map(|p| Vertex2D {
+            position: [p.x, p.y],
+        })
+        .collect()
+}
diff --git a/graphics/src/widget/canvas/stroke.rs b/graphics/src/widget/canvas/stroke.rs
index 7ce5ff1d..a19937ea 100644
--- a/graphics/src/widget/canvas/stroke.rs
+++ b/graphics/src/widget/canvas/stroke.rs
@@ -1,6 +1,8 @@
+//! Create lines from a [crate::widget::canvas::Path] and render with various attributes/styles.
+
 use iced_native::Color;
 use crate::gradient::Gradient;
-use crate::shader::Shader;
+use crate::layer::mesh;
 
 /// The style of a stroke.
 #[derive(Debug, Clone)]
@@ -66,10 +68,10 @@ pub enum Style<'a> {
     Gradient(&'a Gradient),
 }
 
-impl <'a> Into<Shader> for Style<'a> {
-    fn into(self) -> Shader {
+impl <'a> Into<mesh::Style> for Style<'a> {
+    fn into(self) -> mesh::Style {
         match self {
-            Style::Solid(color) => Shader::Solid(color),
+            Style::Solid(color) => mesh::Style::Solid(color),
             Style::Gradient(gradient) => gradient.clone().into()
         }
     }