Fix clippy lints for Rust 1.68

graphics/src/primitive.rs

@@ -9,9 +9,10 @@ use crate::triangle;
 use std::sync::Arc;
 
 /// A rendering primitive.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Default)]
 pub enum Primitive {
     /// An empty primitive
+    #[default]
     None,
     /// A group of primitives
     Group {
@@ -117,9 +118,3 @@ pub enum Primitive {
         cache: Arc<Primitive>,
     },
 }
-
-impl Default for Primitive {
-    fn default() -> Primitive {
-        Primitive::None
-    }
-}

graphics/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

graphics/src/widget/canvas/stroke.rs

@@ -59,9 +59,10 @@ impl<'a> Default for Stroke<'a> {
 }
 
 /// The shape used at the end of open subpaths when they are stroked.
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Default)]
 pub enum LineCap {
     /// The stroke for each sub-path does not extend beyond its two endpoints.
+    #[default]
     Butt,
     /// At the end of each sub-path, the shape representing the stroke will be
     /// extended by a square.
@@ -71,12 +72,6 @@ pub enum LineCap {
     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 {
@@ -89,9 +84,10 @@ impl From<LineCap> for lyon::tessellation::LineCap {
 
 /// The shape used at the corners of paths or basic shapes when they are
 /// stroked.
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Default)]
 pub enum LineJoin {
     /// A sharp corner.
+    #[default]
     Miter,
     /// A round corner.
     Round,
@@ -99,12 +95,6 @@ pub enum LineJoin {
     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 {