feat: pinch-to-zoom video

apps/expo/index.js

@@ -1,2 +1,3 @@
 import "expo-router/entry";
+import "react-native-gesture-handler";
 import "@react-native-anywhere/polyfill-base64";

apps/expo/src/app/_layout.tsx

@@ -1,6 +1,7 @@
 /* eslint-disable @typescript-eslint/no-unsafe-assignment */
 import { useEffect } from "react";
 import { useColorScheme } from "react-native";
+import { GestureHandlerRootView } from "react-native-gesture-handler";
 import { useFonts } from "expo-font";
 import { SplashScreen, Stack } from "expo-router";
 import FontAwesome from "@expo/vector-icons/FontAwesome";
@@ -57,7 +58,11 @@ export default function RootLayout() {
     return null;
   }
 
-  return <RootLayoutNav />;
+  return (
+    <GestureHandlerRootView style={{ flex: 1 }}>
+      <RootLayoutNav />
+    </GestureHandlerRootView>
+  );
 }
 
 function RootLayoutNav() {

apps/expo/src/app/videoPlayer/index.tsx

@@ -1,6 +1,8 @@
 import type { AVPlaybackSource } from "expo-av";
 import React, { useEffect, useState } from "react";
 import { ActivityIndicator, Platform, StyleSheet, View } from "react-native";
+import { Gesture, GestureDetector } from "react-native-gesture-handler";
+import { runOnJS, useSharedValue } from "react-native-reanimated";
 import { ResizeMode, Video } from "expo-av";
 import * as NavigationBar from "expo-navigation-bar";
 import { useLocalSearchParams, useRouter } from "expo-router";
@@ -37,7 +39,9 @@ const VideoPlayer: React.FC<VideoPlayerProps> = ({ data }) => {
   const [videoSrc, setVideoSrc] = useState<AVPlaybackSource>();
   const [isLoading, setIsLoading] = useState(true);
   const [headerData, setHeaderData] = useState<HeaderData>();
+  const [resizeMode, setResizeMode] = useState(ResizeMode.CONTAIN);
   const router = useRouter();
+  const scale = useSharedValue(1);
   const setVideoRef = usePlayerStore((state) => state.setVideoRef);
   const setStatus = usePlayerStore((state) => state.setStatus);
   const setIsIdle = usePlayerStore((state) => state.setIsIdle);
@@ -48,6 +52,19 @@ const VideoPlayer: React.FC<VideoPlayerProps> = ({ data }) => {
     (state) => state.dismissFullscreenPlayer,
   );
 
+  const updateResizeMode = (newMode: ResizeMode) => {
+    setResizeMode(newMode);
+  };
+
+  const pinchGesture = Gesture.Pinch().onUpdate((e) => {
+    scale.value = e.scale;
+    if (scale.value > 1 && resizeMode !== ResizeMode.COVER) {
+      runOnJS(updateResizeMode)(ResizeMode.COVER);
+    } else if (scale.value <= 1 && resizeMode !== ResizeMode.CONTAIN) {
+      runOnJS(updateResizeMode)(ResizeMode.CONTAIN);
+    }
+  });
+
   useEffect(() => {
     const initializePlayer = async () => {
       StatusBar.setStatusBarHidden(true);
@@ -122,12 +139,13 @@ const VideoPlayer: React.FC<VideoPlayerProps> = ({ data }) => {
   };
 
   return (
+    <GestureDetector gesture={pinchGesture}>
       <View className="flex-1 items-center justify-center bg-black">
         <Video
           ref={setVideoRef}
           source={videoSrc}
           shouldPlay
-        resizeMode={ResizeMode.CONTAIN}
+          resizeMode={resizeMode}
           onLoadStart={onVideoLoadStart}
           onReadyForDisplay={onReadyForDisplay}
           onPlaybackStatusUpdate={setStatus}
@@ -138,6 +156,7 @@ const VideoPlayer: React.FC<VideoPlayerProps> = ({ data }) => {
         {!isLoading && data && <Header data={headerData!} />}
         {!isLoading && <MiddleControls />}
       </View>
+    </GestureDetector>
   );
 };