enable stack switching with present method screen in pyodide

docs/backends.rst

@@ -440,7 +440,7 @@ Similar as with PyScript, you can chose between a ``<canvas>``  and a ``<div cla
     <html>
     <head>
         <meta name="viewport" content="width=device-width,initial-scale=1.0">
-        <script src="https://cdn.jsdelivr.net/pyodide/v0.29.0/full/pyodide.js"></script>
+        <script src="https://cdn.jsdelivr.net/pyodide/v314.0.7/full/pyodide.js"></script>
     </head>
     <body>
         <canvas id="canvas" width="640" height="480"></canvas>

docs/static/_pyodide_iframe.html

@@ -4,7 +4,7 @@
 <head>
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <title>Rendercanvas example.py in Pyodide</title>
-    <script src="https://cdn.jsdelivr.net/pyodide/v0.29.0/full/pyodide.js"></script>
+    <script src="https://cdn.jsdelivr.net/pyodide/v314.0.7/full/pyodide.js"></script>
 </head>
 
 <body>

examples/pyodide.html

@@ -4,7 +4,7 @@
 <head>
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <title>RenderCanvas Pyodide example</title>
-    <script src="https://cdn.jsdelivr.net/pyodide/v0.29.0/full/pyodide.js"></script>
+    <script src="https://cdn.jsdelivr.net/pyodide/v314.0.7/full/pyodide.js"></script>
 </head>
 
 <body>

examples/serve_browser_examples.py

@@ -57,7 +57,7 @@ def get_html_index():
     <head>
         <meta name="viewport" content="width=device-width,initial-scale=1.0">
         <title>RenderCanvas PyScript examples</title>
-        <script type="module" src="https://pyscript.net/releases/2025.11.1/core.js"></script>
+        <script type="module" src="https://pyscript.net/releases/2026.7.3/core.js"></script>
     </head>
     <body>
 
@@ -84,7 +84,7 @@ def get_html_index():
 <head>
     <meta name="viewport" content="width=device-width,initial-scale=1.0">
     <title>example.py via PyScript</title>
-    <script type="module" src="https://pyscript.net/releases/2025.11.1/core.js"></script>
+    <script type="module" src="https://pyscript.net/releases/2026.7.3/core.js"></script>
 </head>
 
 <body>

rendercanvas/pyodide.py

@@ -20,6 +20,7 @@
     raise ImportError("This module is only for use with Pyodide in the browser.")
 
 from pyodide.ffi import create_proxy, to_js
+from pyodide.code import run_js
 from js import window, document, ImageData, Uint8ClampedArray, OffscreenCanvas
 
 
@@ -72,6 +73,11 @@ def __init__(
         # If size or title are not given, set them to None, so they are left as-is. This is usually preferred in html docs.
         kwargs["size"] = kwargs.get("size", None)
 
+        # instead of using the callback directly (which blocks stack switching), chain on the resolve. TODO: avoid the eval and implement it using pyodide ffi
+        self._next_frame_promise = run_js(
+            "() => new Promise(resolve => requestAnimationFrame(resolve))"
+        )()
+
         # Finalize init
         super().__init__(*args, **kwargs)
         self._final_canvas_init()
@@ -133,7 +139,7 @@ def _rc_request_draw(self):
         self._time_to_draw()
 
     def _rc_request_paint(self):
-        window.requestAnimationFrame(create_proxy(lambda _: self._time_to_paint()))
+        self._next_frame_promise.then(lambda _: self._time_to_paint())
 
     def _rc_force_paint(self):
         # Not very clean to do this, and not sure if it works in a browser;