Implement theme styling for `Toggler`

... and wire up theming to the `styling` example.

1 files changed, 4 insertions, 41 deletions

diff --git a/style/src/toggler.rs b/style/src/toggler.rs
index c06a8cd1..4ee7db46 100644
--- a/style/src/toggler.rs
+++ b/style/src/toggler.rs
@@ -3,7 +3,7 @@ use iced_core::Color;
 
 /// The appearance of a toggler.
 #[derive(Debug)]
-pub struct Style {
+pub struct Appearance {
     pub background: Color,
     pub background_border: Option<Color>,
     pub foreground: Color,
@@ -12,46 +12,9 @@ pub struct Style {
 
 /// A set of rules that dictate the style of a toggler.
 pub trait StyleSheet {
-    fn active(&self, is_active: bool) -> Style;
+    type Style: Default + Copy;
 
-    fn hovered(&self, is_active: bool) -> Style;
-}
-
-struct Default;
-
-impl StyleSheet for Default {
-    fn active(&self, is_active: bool) -> Style {
-        Style {
-            background: if is_active {
-                Color::from_rgb(0.0, 1.0, 0.0)
-            } else {
-                Color::from_rgb(0.7, 0.7, 0.7)
-            },
-            background_border: None,
-            foreground: Color::WHITE,
-            foreground_border: None,
-        }
-    }
-
-    fn hovered(&self, is_active: bool) -> Style {
-        Style {
-            foreground: Color::from_rgb(0.95, 0.95, 0.95),
-            ..self.active(is_active)
-        }
-    }
-}
-
-impl<'a> std::default::Default for Box<dyn StyleSheet + 'a> {
-    fn default() -> Self {
-        Box::new(Default)
-    }
-}
+    fn active(&self, style: Self::Style, is_active: bool) -> Appearance;
 
-impl<'a, T> From<T> for Box<dyn StyleSheet + 'a>
-where
-    T: 'a + StyleSheet,
-{
-    fn from(style: T) -> Self {
-        Box::new(style)
-    }
+    fn hovered(&self, style: Self::Style, is_active: bool) -> Appearance;
 }