feat(divider): add functions for divider style variants of a Rule

src/theme/mod.rs

@@ -652,6 +652,8 @@ impl progress_bar::StyleSheet for Theme {
 #[derive(Clone, Copy)]
 pub enum Rule {
     Default,
+    LightDivider,
+    HeavyDivider,
     Custom(fn(&Theme) -> rule::Appearance),
 }
 
@@ -674,6 +676,24 @@ impl rule::StyleSheet for Theme {
                 radius: 0.0,
                 fill_mode: rule::FillMode::Full,
             },
+            Rule::LightDivider => {
+                let cosmic = &self.cosmic().primary;
+                rule::Appearance {
+                    color: cosmic.divider.into(),
+                    width: 1,
+                    radius: 0.0,
+                    fill_mode: rule::FillMode::Padded(10),
+                }
+            }
+            Rule::HeavyDivider => {
+                let cosmic = &self.cosmic().primary;
+                rule::Appearance {
+                    color: cosmic.divider.into(),
+                    width: 4,
+                    radius: 4.0,
+                    fill_mode: rule::FillMode::Full,
+                }
+            }
             Rule::Custom(f) => f(self),
         }
     }

src/widget/list/column.rs

@@ -1,8 +1,7 @@
 // Copyright 2022 System76 <info@system76.com>
 // SPDX-License-Identifier: MPL-2.0
 
-use crate::widget::horizontal_rule;
-use crate::{theme, Element};
+use crate::{theme, widget::divider, Element};
 use apply::Apply;
 use iced::{Background, Color};
 
@@ -33,7 +32,7 @@ impl<'a, Message: 'static> ListColumn<'a, Message> {
     #[allow(clippy::should_implement_trait)]
     pub fn add(mut self, item: impl Into<Element<'a, Message>>) -> Self {
         if !self.children.is_empty() {
-            self.children.push(horizontal_rule(10).into());
+            self.children.push(divider::horizontal::light().into());
         }
 
         self.children.push(item.into());

src/widget/mod.rs

@@ -40,9 +40,6 @@ pub use scrollable::*;
 mod text;
 pub use text::{text, Text};
 
-pub mod separator;
-pub use separator::{horizontal_rule, vertical_rule};
-
 pub mod spin_button;
 pub use spin_button::{spin_button, SpinButton};
 
@@ -56,3 +53,23 @@ pub use view_switcher::vertical as vertical_view_switcher;
 
 pub mod warning;
 pub use warning::*;
+
+/// An element to distinguish a boundary between two elements.
+pub mod divider {
+    /// Horizontal variant of a divider.
+    pub mod horizontal {
+        use iced::widget::{horizontal_rule, Rule};
+
+        /// Horizontal divider with light thickness
+        #[must_use]
+        pub fn light() -> Rule<crate::Renderer> {
+            horizontal_rule(4).style(crate::theme::Rule::LightDivider)
+        }
+
+        /// Horizontal divider with heavy thickness.
+        #[must_use]
+        pub fn heavy() -> Rule<crate::Renderer> {
+            horizontal_rule(10).style(crate::theme::Rule::HeavyDivider)
+        }
+    }
+}

src/widget/separator.rs

@@ -1,26 +0,0 @@
-// Copyright 2022 System76 <info@system76.com>
-// SPDX-License-Identifier: MPL-2.0
-
-use crate::iced::widget;
-use crate::{theme, Renderer, Theme};
-
-#[must_use]
-pub fn horizontal_rule(size: u16) -> widget::Rule<Renderer> {
-    widget::horizontal_rule(size).style(theme::Rule::Custom(separator_style))
-}
-
-#[must_use]
-pub fn vertical_rule(size: u16) -> widget::Rule<Renderer> {
-    widget::vertical_rule(size).style(theme::Rule::Custom(separator_style))
-}
-
-#[allow(clippy::trivially_copy_pass_by_ref)]
-fn separator_style(theme: &Theme) -> widget::rule::Appearance {
-    let cosmic = &theme.cosmic().primary;
-    widget::rule::Appearance {
-        color: cosmic.divider.into(),
-        width: 1,
-        radius: 0.0,
-        fill_mode: widget::rule::FillMode::Padded(10),
-    }
-}