Fixes

crates/egui/src/theme/style_provider.rs

@@ -1,4 +1,4 @@
-use std::any::TypeId;
+use core::any::TypeId;
 
 use crate::widget_style::StyleArgs;
 

crates/egui/src/theme/themes.rs

@@ -86,6 +86,11 @@ impl Themes {
     pub fn get<S: WidgetStyle + 'static>(&self) -> ThemeWrap<S> {
         let v = self.themes.get_temp::<ThemeWrap<S>>(Id::NULL);
 
-        v.unwrap_or_else(|| panic!("A style should be set for {:?}", std::any::type_name::<S>()))
+        v.unwrap_or_else(|| {
+            panic!(
+                "A style should be set for {:?}",
+                core::any::type_name::<S>()
+            )
+        })
     }
 }

crates/egui/src/widget_style/classes.rs

@@ -42,7 +42,7 @@ impl HasClasses for Classes {
     }
 }
 
-impl std::fmt::Display for Classes {
+impl core::fmt::Display for Classes {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.classes.iter().for_each(|class| {
             let _ = f.write_str(class.as_str());

crates/egui/src/widget_style/mod.rs

@@ -6,7 +6,7 @@ mod classes;
 
 pub use self::classes::{ClassName, Classes, HasClasses, ROOT_CLASS, SELECTED_CLASS};
 
-use std::fmt::Debug;
+use core::fmt::Debug;
 
 use epaint::{Color32, FontId, Stroke, text::TextWrapMode};
 
@@ -16,7 +16,7 @@ use crate::{
 };
 
 /// Each dedicated style must implement this trait to be used in the theme plugin system
-pub trait WidgetStyle: Debug + Clone + Send + Sync + std::any::Any + 'static {}
+pub trait WidgetStyle: Debug + Clone + Send + Sync + core::any::Any + 'static {}
 
 /// General text style
 #[derive(Debug, Clone)]

crates/egui_demo_lib/tests/snapshots/demos/Dancing Strings.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:05527c073b1ee2f6a15052a9097d1ad515331ff32d572cf510086f9ebb7a7bbc
-size 27253
+oid sha256:391d5664dbb4925bb5deb765482da613795ca25eda099b3f29df3b4faf00eb01
+size 28657