Draft first-class `Theme` support

RFC: https://github.com/iced-rs/rfcs/pull/6

2 files changed, 6 insertions, 71 deletions

diff --git a/examples/game_of_life/src/main.rs b/examples/game_of_life/src/main.rs
index ab8b80e4..3e9c24a0 100644
--- a/examples/game_of_life/src/main.rs
+++ b/examples/game_of_life/src/main.rs
@@ -8,6 +8,7 @@ use iced::button::{self, Button};
 use iced::executor;
 use iced::pick_list::{self, PickList};
 use iced::slider::{self, Slider};
+use iced::theme::{self, Theme};
 use iced::time;
 use iced::window;
 use iced::{
@@ -55,6 +56,7 @@ enum Message {
 
 impl Application for GameOfLife {
     type Message = Message;
+    type Theme = Theme;
     type Executor = executor::Default;
     type Flags = ();
 
@@ -836,12 +838,12 @@ impl Controls {
                     Text::new(if is_playing { "Pause" } else { "Play" }),
                 )
                 .on_press(Message::TogglePlayback)
-                .style(style::Button),
+                .style(theme::Button::Primary),
             )
             .push(
                 Button::new(&mut self.next_button, Text::new("Next"))
                     .on_press(Message::Next)
-                    .style(style::Button),
+                    .style(theme::Button::Secondary),
             );
 
         let speed_controls = Row::new()
@@ -885,7 +887,7 @@ impl Controls {
             .push(
                 Button::new(&mut self.clear_button, Text::new("Clear"))
                     .on_press(Message::Clear)
-                    .style(style::Clear),
+                    .style(theme::Button::Destructive),
             )
             .into()
     }
diff --git a/examples/game_of_life/src/style.rs b/examples/game_of_life/src/style.rs
index be9a0e96..688635e0 100644
--- a/examples/game_of_life/src/style.rs
+++ b/examples/game_of_life/src/style.rs
@@ -1,4 +1,4 @@
-use iced::{button, container, pick_list, slider, Background, Color};
+use iced::{container, pick_list, slider, Background, Color};
 
 const ACTIVE: Color = Color::from_rgb(
     0x72 as f32 / 255.0,
@@ -6,12 +6,6 @@ const ACTIVE: Color = Color::from_rgb(
     0xDA as f32 / 255.0,
 );
 
-const DESTRUCTIVE: Color = Color::from_rgb(
-    0xC0 as f32 / 255.0,
-    0x47 as f32 / 255.0,
-    0x47 as f32 / 255.0,
-);
-
 const HOVERED: Color = Color::from_rgb(
     0x67 as f32 / 255.0,
     0x7B as f32 / 255.0,
@@ -38,67 +32,6 @@ impl container::StyleSheet for Container {
     }
 }
 
-pub struct Button;
-
-impl button::StyleSheet for Button {
-    fn active(&self) -> button::Style {
-        button::Style {
-            background: Some(Background::Color(ACTIVE)),
-            border_radius: 3.0,
-            text_color: Color::WHITE,
-            ..button::Style::default()
-        }
-    }
-
-    fn hovered(&self) -> button::Style {
-        button::Style {
-            background: Some(Background::Color(HOVERED)),
-            text_color: Color::WHITE,
-            ..self.active()
-        }
-    }
-
-    fn pressed(&self) -> button::Style {
-        button::Style {
-            border_width: 1.0,
-            border_color: Color::WHITE,
-            ..self.hovered()
-        }
-    }
-}
-
-pub struct Clear;
-
-impl button::StyleSheet for Clear {
-    fn active(&self) -> button::Style {
-        button::Style {
-            background: Some(Background::Color(DESTRUCTIVE)),
-            border_radius: 3.0,
-            text_color: Color::WHITE,
-            ..button::Style::default()
-        }
-    }
-
-    fn hovered(&self) -> button::Style {
-        button::Style {
-            background: Some(Background::Color(Color {
-                a: 0.5,
-                ..DESTRUCTIVE
-            })),
-            text_color: Color::WHITE,
-            ..self.active()
-        }
-    }
-
-    fn pressed(&self) -> button::Style {
-        button::Style {
-            border_width: 1.0,
-            border_color: Color::WHITE,
-            ..self.hovered()
-        }
-    }
-}
-
 pub struct Slider;
 
 impl slider::StyleSheet for Slider {