[demo] Move slider demo to own window

egui_demo_lib/src/apps/demo/demo_windows.rs

@@ -14,6 +14,7 @@ impl Default for Demos {
     fn default() -> Self {
         let demos: Vec<Box<dyn super::Demo>> = vec![
             Box::new(super::WidgetGallery::default()),
+            Box::new(super::sliders::Sliders::default()),
             Box::new(super::input_test::InputTest::default()),
             Box::new(super::FontBook::default()),
             Box::new(super::Painting::default()),

egui_demo_lib/src/apps/demo/mod.rs

@@ -15,7 +15,7 @@ pub mod font_contents_ubuntu;
 pub mod input_test;
 mod painting;
 mod scrolls;
-mod sliders;
+pub mod sliders;
 mod tests;
 pub mod toggle_switch;
 mod widget_gallery;

egui_demo_lib/src/apps/demo/sliders.rs

@@ -29,8 +29,24 @@ impl Default for Sliders {
     }
 }
 
-impl Sliders {
+impl super::Demo for Sliders {
-    pub fn ui(&mut self, ui: &mut Ui) {
+    fn name(&self) -> &str {
+        "⬌ Sliders"
+    }
+
+    fn show(&mut self, ctx: &egui::CtxRef, open: &mut bool) {
+        egui::Window::new(self.name())
+            .open(open)
+            .resizable(false)
+            .show(ctx, |ui| {
+                use super::View;
+                self.ui(ui);
+            });
+    }
+}
+
+impl super::View for Sliders {
+    fn ui(&mut self, ui: &mut Ui) {
         let Self {
             min,
             max,
@@ -84,7 +100,7 @@ impl Sliders {
         }
 
         ui.separator();
-        ui.label("Demo slider range:");
+        ui.label("Slider range:");
         ui.add(
             Slider::f64(min, full_range.clone())
                 .logarithmic(true)

egui_demo_lib/src/apps/demo/widgets.rs

@@ -20,7 +20,6 @@ pub struct Widgets {
     button_enabled: bool,
     count: usize,
     radio: Enum,
-    sliders: super::Sliders,
     angle: f32,
     color: Color32,
     single_line_text_input: String,
@@ -34,7 +33,6 @@ impl Default for Widgets {
             button_enabled: true,
             radio: Enum::First,
             count: 0,
-            sliders: Default::default(),
             angle: std::f32::consts::TAU / 3.0,
             color: (Rgba::from_rgb(0.0, 1.0, 0.5) * 0.75).into(),
             single_line_text_input: "Hello World!".to_owned(),
@@ -79,6 +77,9 @@ impl Widgets {
         ui.label("Tooltips can be more than just simple text.")
             .on_hover_ui(tooltip_ui);
 
+        egui::Frame::group(ui.style()).show(ui, |ui| {
+            ui.label("This is a group of widgets");
+
             ui.horizontal(|ui| {
                 ui.radio_value(&mut self.radio, Enum::First, "First");
                 ui.radio_value(&mut self.radio, Enum::Second, "Second");
@@ -90,6 +91,7 @@ impl Widgets {
                 ui.selectable_value(&mut self.radio, Enum::Second, "Second");
                 ui.selectable_value(&mut self.radio, Enum::Third, "Third");
             });
+        });
 
         ui.checkbox(&mut self.button_enabled, "Button enabled");
 
@@ -104,25 +106,6 @@ impl Widgets {
             ui.label(format!("The button has been clicked {} times.", self.count));
         });
 
-        egui::Frame::group(ui.style()).show(ui, |ui| {
-            ui.horizontal(|ui| {
-                ui.label("Drag this value to change it:");
-                ui.add(DragValue::f64(&mut self.sliders.value).speed(0.01));
-            });
-
-            ui.add(
-                egui::Slider::f64(&mut self.sliders.value, 1.0..=100.0)
-                    .logarithmic(true)
-                    .text("A slider"),
-            );
-
-            egui::CollapsingHeader::new("More sliders")
-                .default_open(false)
-                .show(ui, |ui| {
-                    self.sliders.ui(ui);
-                });
-        });
-
         ui.separator();
 
         ui.horizontal_for_text(TextStyle::Body, |ui| {