feat: react native community slider

src/components/Slider.js

@@ -1,12 +1,14 @@
-import { useEffect, useRef, useState } from 'react'
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import { StyleSheet, Text, View } from 'react-native'
-import { Gesture, GestureDetector } from 'react-native-gesture-handler'
-import Animated, { runOnJS, useAnimatedStyle, useSharedValue } from 'react-native-reanimated'
+import NativeSlider from '@react-native-community/slider'
 import { Palette, Style } from '../styles'
 import { FONT_FAMILY } from '../styles/Fonts'
 import { LinearGradient } from './LinearGradient/LinearGradient'
 
-const INITIAL_BOX_SIZE = 6
+const TRACK_HEIGHT = 6
+const HANDLE_SIZE = 20
+const ACTIVE_TRACK_MIN_WIDTH = 6
+const clamp01 = (value) => Math.min(1, Math.max(0, Number(value) || 0))
 
 export default ({
   value,
@@ -17,116 +19,94 @@ export default ({
   onSeekEnd,
   seekEnabled = false,
 }) => {
-  const offset = useSharedValue(0)
-  const boxWidth = useSharedValue(INITIAL_BOX_SIZE)
-  const [sliderWidth, setSliderWidth] = useState(0)
+  const [layoutWidth, setLayoutWidth] = useState(0)
+  const [sliderValue, setSliderValue] = useState(clamp01(progress))
   const seekingRef = useRef(false)
 
-  const MAX_VALUE = Math.max(0, sliderWidth - INITIAL_BOX_SIZE)
+  // Keep slider synced with external progress except while user is dragging.
+  useEffect(() => {
+    if (seekingRef.current) return
+    if (typeof progress === 'number') {
+      setSliderValue(clamp01(progress))
+    }
+  }, [progress])
 
-  const handleSeekStart = () => {
-    if (seekEnabled && typeof onSeekStart === 'function' && !seekingRef.current) {
+  const handleSlidingStart = useCallback(() => {
+    if (!seekEnabled || seekingRef.current) return
     seekingRef.current = true
+    if (typeof onSeekStart === 'function') {
       onSeekStart()
     }
-  }
+  }, [onSeekStart, seekEnabled])
 
-  const handleSeekEnd = () => {
-    if (seekingRef.current && typeof onSeekEnd === 'function') {
+  const handleValueChange = useCallback(
+    (nextValue) => {
+      if (!seekEnabled) return
+      setSliderValue(clamp01(nextValue))
+    },
+    [seekEnabled]
+  )
+
+  const handleSlidingComplete = useCallback(
+    (nextValue) => {
+      const ratio = clamp01(nextValue)
+      setSliderValue(ratio)
+      if (seekEnabled && typeof onSeek === 'function') {
+        onSeek(ratio)
+      }
+      if (seekingRef.current) {
         seekingRef.current = false
+        if (typeof onSeekEnd === 'function') {
           onSeekEnd()
         }
       }
+    },
+    [onSeek, onSeekEnd, seekEnabled]
+  )
 
-  const pan = Gesture.Pan()
-    .enabled(seekEnabled)
-    .onBegin(() => {
-      runOnJS(handleSeekStart)()
-    })
-    .onStart(() => {
-      runOnJS(handleSeekStart)()
-    })
-    .onChange((event) => {
-      runOnJS(handleSeekStart)()
-      if (!(MAX_VALUE > 0)) {
-        offset.value = 0
-        boxWidth.value = INITIAL_BOX_SIZE
-        return
-      }
-      offset.value =
-        Math.abs(offset.value) <= MAX_VALUE
-          ? offset.value + event.changeX <= 0
-            ? 0
-            : offset.value + event.changeX >= MAX_VALUE
-              ? MAX_VALUE
-              : offset.value + event.changeX
-          : offset.value
+  const handleLayout = useCallback((event) => {
+    const width = Math.max(0, Math.round(event?.nativeEvent?.layout?.width || 0))
+    setLayoutWidth((prev) => (prev === width ? prev : width))
+  }, [])
 
-      const newWidth = INITIAL_BOX_SIZE + offset.value
-      boxWidth.value = newWidth
-    })
-    .onEnd(() => {
-      if (seekEnabled && typeof onSeek === 'function' && MAX_VALUE > 0) {
-        const ratio = MAX_VALUE > 0 ? Math.min(1, Math.max(0, offset.value / MAX_VALUE)) : 0
-        // Reanimated -> JS thread bridge
-        runOnJS(onSeek)(ratio)
-      }
-      runOnJS(handleSeekEnd)()
-    })
-    .onFinalize(() => {
-      runOnJS(handleSeekEnd)()
-    })
-
-  // Reflect external progress into the slider UI
-  useEffect(() => {
-    if (seekingRef.current) return
-
-    if (typeof progress === 'number' && sliderWidth > 0) {
-      const max = sliderWidth - INITIAL_BOX_SIZE
-      if (!(max > 0)) {
-        offset.value = 0
-        boxWidth.value = INITIAL_BOX_SIZE
-        return
-      }
-      const clamped = Math.max(0, Math.min(1, progress))
-      const newOffset = clamped * max
-      offset.value = newOffset
-      boxWidth.value = INITIAL_BOX_SIZE + newOffset
-    }
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [progress, sliderWidth])
-
-  const boxStyle = useAnimatedStyle(() => {
-    return {
-      width: INITIAL_BOX_SIZE + offset.value,
-    }
-  })
-
-  const sliderStyle = useAnimatedStyle(() => {
-    return {
-      transform: [{ translateX: offset.value }],
-    }
-  })
+  const visualMetrics = useMemo(() => {
+    const ratio = clamp01(sliderValue)
+    const fillWidth =
+      layoutWidth > 0 ? Math.max(ACTIVE_TRACK_MIN_WIDTH, layoutWidth * ratio) : ACTIVE_TRACK_MIN_WIDTH
+    const handleLeft = layoutWidth > 0 ? ratio * (layoutWidth - HANDLE_SIZE) : 0
+    return { fillWidth, handleLeft }
+  }, [layoutWidth, sliderValue])
 
+  console.log("using react native slider ")
   return (
-    <View
-      onLayout={(e) => {
-        const nextWidth = Math.max(0, Math.round(e.nativeEvent.layout?.width || 0))
-        setSliderWidth((prev) => (prev === nextWidth ? prev : nextWidth))
-      }}
-    >
-      <View style={{ ...styles.sliderTrack, width: sliderWidth || undefined }}>
-        <Animated.View style={[styles.box, boxStyle]}>
+    <View>
+      <View style={styles.trackArea} onLayout={handleLayout}>
+        <View style={styles.sliderTrack}>
+          <View style={[styles.box, { width: visualMetrics.fillWidth }]}>
             <LinearGradient
               colors={['#F94697', '#7023F7']}
               start={{ x: 0, y: 0 }}
               end={{ x: 1, y: 0 }}
               style={{ flex: 1, borderRadius: 20 }}
             />
-        </Animated.View>
-        <GestureDetector gesture={pan}>
-          <Animated.View style={[styles.sliderHandle, sliderStyle]} />
-        </GestureDetector>
+          </View>
+        </View>
+        <NativeSlider
+          value={sliderValue}
+          minimumValue={0}
+          maximumValue={1}
+          step={0}
+          disabled={!seekEnabled}
+          onSlidingStart={handleSlidingStart}
+          onValueChange={handleValueChange}
+          onSlidingComplete={handleSlidingComplete}
+          minimumTrackTintColor="transparent"
+          maximumTrackTintColor="transparent"
+          thumbTintColor="transparent"
+          tapToSeek
+          style={styles.nativeSlider}
+        />
+        <View pointerEvents="none" style={[styles.sliderHandle, { left: visualMetrics.handleLeft }]} />
       </View>
       <View style={{ ...Style.containerSpaceBetween, marginTop: 10 }}>
         <Text style={styles.time}>{value}</Text>
@@ -137,15 +117,22 @@ export default ({
 }
 
 const styles = StyleSheet.create({
+  trackArea: {
+    width: '100%',
+    height: HANDLE_SIZE,
+    justifyContent: 'center',
+    position: 'relative',
+  },
   box: {
-    height: INITIAL_BOX_SIZE,
+    height: TRACK_HEIGHT,
     borderRadius: 20,
     position: 'absolute',
     zIndex: 1,
+    overflow: 'hidden',
   },
   sliderHandle: {
-    width: 20,
-    height: 20,
+    width: HANDLE_SIZE,
+    height: HANDLE_SIZE,
     backgroundColor: '#f8f9ff',
     borderRadius: 25,
     position: 'absolute',
@@ -161,8 +148,15 @@ const styles = StyleSheet.create({
     shadowRadius: 3.05,
     elevation: 4,
   },
+  nativeSlider: {
+    position: 'absolute',
+    left: 0,
+    right: 0,
+    height: HANDLE_SIZE,
+    zIndex: 3,
+  },
   sliderTrack: {
-    height: 6,
+    height: TRACK_HEIGHT,
     backgroundColor: '#0F0C19',
     borderRadius: 25,
     justifyContent: 'center',