Disable animations for users that prefer reduced motion

src/room/InCallView.tsx

@@ -60,6 +60,7 @@ import { useAudioOutputDevice } from "../video-grid/useAudioOutputDevice";
 import { widget, ElementWidgetActions } from "../widget";
 import { useJoinRule } from "./useJoinRule";
 import { useUrlParams } from "../UrlParams";
+import { usePrefersReducedMotion } from "../usePrefersReducedMotion";
 
 const canScreenshare = "getDisplayMedia" in (navigator.mediaDevices ?? {});
 // There is currently a bug in Safari our our code with cloning and sending MediaStreams
@@ -265,6 +266,8 @@ export function InCallView({
     []
   );
 
+  const prefersReducedMotion = usePrefersReducedMotion();
+
   const renderContent = (): JSX.Element => {
     if (items.length === 0) {
       return (
@@ -292,7 +295,11 @@ export function InCallView({
     }
 
     return (
-      <VideoGrid items={items} layout={layout} disableAnimations={isSafari}>
+      <VideoGrid
+        items={items}
+        layout={layout}
+        disableAnimations={prefersReducedMotion || isSafari}
+      >
         {({
           item,
           ...rest

src/room/PTTButton.tsx

@@ -22,6 +22,7 @@ import styles from "./PTTButton.module.css";
 import { ReactComponent as MicIcon } from "../icons/Mic.svg";
 import { useEventTarget } from "../useEvents";
 import { Avatar } from "../Avatar";
+import { usePrefersReducedMotion } from "../usePrefersReducedMotion";
 
 interface Props {
   enabled: boolean;
@@ -159,8 +160,14 @@ export const PTTButton: React.FC<Props> = ({
   // TODO: We will need to disable this for a global PTT hotkey to work
   useEventTarget(window, "blur", unhold);
 
+  const prefersReducedMotion = usePrefersReducedMotion();
   const { shadow } = useSpring({
-    shadow: (Math.max(activeSpeakerVolume, -70) + 70) * 0.6,
+    immediate: prefersReducedMotion,
+    shadow: prefersReducedMotion
+      ? activeSpeakerUserId
+        ? 17
+        : 0
+      : (Math.max(activeSpeakerVolume, -70) + 70) * 0.6,
     config: {
       clamp: true,
       tension: 300,