docs and example

egui_demo_app/src/lib.rs

@@ -40,16 +40,46 @@ impl WebHandle {
     #[wasm_bindgen]
     #[cfg(target_arch = "wasm32")]
     pub fn stop_web(&self) -> Result<(), wasm_bindgen::JsValue> {
-        let res = self.handle.lock().destroy();
+        let mut app = self.handle.lock();
+        let res = app.destroy();
 
-        // let numw = Arc::weak_count(&uu);
-        // let nums = Arc::strong_count(&uu);
+        // let numw = Arc::weak_count(&app);
+        // let nums = Arc::strong_count(&app);
         // tracing::debug!("runner ref {:?}, {:?}", numw, nums);
 
         res
     }
 }
 
+
+
+
+#[cfg(target_arch = "wasm32")]
+#[wasm_bindgen]
+pub fn init_wasm_hooks(){
+    // Make sure panics are logged using `console.error`.
+    console_error_panic_hook::set_once();
+
+    // Redirect tracing to console.log and friends:
+    tracing_wasm::set_as_global_default();
+}
+
+
+#[cfg(target_arch = "wasm32")]
+#[wasm_bindgen]
+pub fn start_separate(canvas_id: &str) -> Result<WebHandle, wasm_bindgen::JsValue> {
+    let web_options = eframe::WebOptions::default();
+    let handle = eframe::start_web(
+        canvas_id,
+        web_options,
+        Box::new(|cc| Box::new(WrapApp::new(cc))),
+    )
+    .map(|handle| WebHandle { handle });
+    
+    handle
+}
+
+
 /// This is the entry-point for all the web-assembly.
 /// This is called once from the HTML.
 /// It loads the app, installs some callbacks, then returns.
@@ -57,19 +87,7 @@ impl WebHandle {
 #[cfg(target_arch = "wasm32")]
 #[wasm_bindgen]
 pub fn start(canvas_id: &str) -> Result<WebHandle, wasm_bindgen::JsValue> {
-    // Make sure panics are logged using `console.error`.
-    console_error_panic_hook::set_once();
 
-    // Redirect tracing to console.log and friends:
-    tracing_wasm::set_as_global_default();
-
-    let web_options = eframe::WebOptions::default();
-    let handle = eframe::start_web(
-        canvas_id,
-        web_options,
-        Box::new(|cc| Box::new(WrapApp::new(cc))),
-    )
-    .map(|handle| WebHandle { handle });
-
-    handle
+    init_wasm_hooks();
+    start_separate(canvas_id)
 }