fix: clippy lint https://rust-lang.github.io/rust-clippy/master/index…

….html#large_enum_variant

examples/scrollable/src/main.rs

@@ -207,7 +207,7 @@ impl Application for ScrollableDemo {
     }
 
     fn theme(&self) -> Theme {
-        self.theme
+        self.theme.clone()
     }
 }
 

examples/styling/src/main.rs

@@ -53,7 +53,10 @@ impl Sandbox for Styling {
         };
         let extended = Extended::generate(palette);
         Styling {
-            custom_theme: Theme::Custom { palette, extended },
+            custom_theme: Theme::Custom {
+                palette: Box::new(palette),
+                extended: Box::new(extended)
+            },
             ..Default::default()
         }
     }
@@ -67,7 +70,7 @@ impl Sandbox for Styling {
             Message::ThemeChanged(theme) => self.theme = match theme {
                 ThemeType::Light => Theme::Light,
                 ThemeType::Dark => Theme::Dark,
-                ThemeType::Custom => self.custom_theme,
+                ThemeType::Custom => self.custom_theme.clone(),
             },
             Message::InputChanged(value) => self.input_value = value,
             Message::ButtonPressed => {}
@@ -163,6 +166,6 @@ impl Sandbox for Styling {
     }
 
     fn theme(&self) -> Theme {
-        self.theme
+        self.theme.clone()
     }
 }

style/src/theme.rs

@@ -21,13 +21,13 @@ use crate::toggler;
 
 use iced_core::{Background, Color};
 
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Theme {
     Light,
     Dark,
     Custom {
-        palette: Palette,
-        extended: Extended
+        palette: Box<Palette>,
+        extended: Box<Extended>,
     }
 }
 
@@ -36,7 +36,7 @@ impl Theme {
         match self {
             Self::Light => Palette::LIGHT,
             Self::Dark => Palette::DARK,
-            Self::Custom { palette, .. } => palette
+            Self::Custom { palette, .. } => *palette
         }
     }
 
@@ -78,7 +78,7 @@ impl application::StyleSheet for Theme {
                 background_color: palette.background.base.color,
                 text_color: palette.background.base.text,
             },
-            Application::Custom(f) => f(*self),
+            Application::Custom(f) => f(self.clone()),
         }
     }
 }