Fix some compilation issues

egui_demo_lib/src/apps/http_app.rs

@@ -14,7 +14,7 @@ struct Resource {
 }
 
 impl Resource {
-    fn from_response(ctx: &egui::Context, response: ehttp::Response) -> Self {
+    fn from_response(ctx: &egui::CtxRef, response: ehttp::Response) -> Self {
         let content_type = response.content_type().unwrap_or_default();
         let image = if content_type.starts_with("image/") {
             decode_image(&response.bytes)
@@ -240,7 +240,7 @@ fn selectable_text(ui: &mut egui::Ui, mut text: &str) {
 
 #[cfg(feature = "syntect")]
 fn syntax_highlighting(
-    ctx: &egui::Context,
+    ctx: &egui::CtxRef,
     response: &ehttp::Response,
     text: &str,
 ) -> Option<ColoredText> {
@@ -253,7 +253,7 @@ fn syntax_highlighting(
 }
 
 #[cfg(not(feature = "syntect"))]
-fn syntax_highlighting(_ctx: &egui::Context, _: &ehttp::Response, _: &str) -> Option<ColoredText> {
+fn syntax_highlighting(_ctx: &egui::CtxRef, _: &ehttp::Response, _: &str) -> Option<ColoredText> {
     None
 }
 

egui_web/src/lib.rs

@@ -252,7 +252,7 @@ pub fn local_storage_remove(key: &str) {
 }
 
 #[cfg(feature = "persistence")]
-pub fn load_memory(ctx: &egui::Context) {
+pub fn load_memory(ctx: &egui::CtxRef) {
     if let Some(memory_string) = local_storage_get("egui_memory_ron") {
         match ron::from_str(&memory_string) {
             Ok(memory) => {

epaint/src/mutex.rs

@@ -211,7 +211,8 @@ mod rw_lock_impl {
 
 #[cfg(not(feature = "multi_threaded"))]
 mod arc_impl {
-    pub use std::rc::Rc as Arc;
+    // pub use std::rc::Rc as Arc; // TODO(emilk): optimize single threaded code by using `Rc` instead of `Arc`.
+    pub use std::sync::Arc;
 }
 
 // ----------------------------------------------------------------------------