Remove Sandbox trait 🎉

examples/gradient/src/main.rs

@@ -1,22 +1,17 @@
 use iced::application;
+use iced::gradient;
 use iced::widget::{
     checkbox, column, container, horizontal_space, row, slider, text,
 };
-use iced::{gradient, window};
-use iced::{
-    Alignment, Color, Element, Length, Radians, Sandbox, Settings, Theme,
-};
+use iced::{Alignment, Color, Element, Length, Radians, Theme};
 
 pub fn main() -> iced::Result {
     tracing_subscriber::fmt::init();
 
-    Gradient::run(Settings {
-        window: window::Settings {
-            transparent: true,
-            ..Default::default()
-        },
-        ..Default::default()
-    })
+    iced::application("Gradient - Iced", Gradient::update, Gradient::view)
+        .style(Gradient::style)
+        .transparent(true)
+        .run()
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -35,9 +30,7 @@ enum Message {
     TransparentToggled(bool),
 }
 
-impl Sandbox for Gradient {
-    type Message = Message;
-
+impl Gradient {
     fn new() -> Self {
         Self {
             start: Color::WHITE,
@@ -47,10 +40,6 @@ impl Sandbox for Gradient {
         }
     }
 
-    fn title(&self) -> String {
-        String::from("Gradient")
-    }
-
     fn update(&mut self, message: Message) {
         match message {
             Message::StartChanged(color) => self.start = color,
@@ -118,6 +107,12 @@ impl Sandbox for Gradient {
     }
 }
 
+impl Default for Gradient {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 fn color_picker(label: &str, color: Color) -> Element<'_, Color> {
     row![
         text(label).width(64),