124 lines
3.9 KiB
TypeScript
124 lines
3.9 KiB
TypeScript
import { useCallback } from 'react';
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import { StyleSheet, Text, View, ViewStyle } from 'react-native';
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import { Gesture, GestureDetector, GestureHandlerRootView } from 'react-native-gesture-handler';
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import Animated, { runOnJS, useAnimatedStyle, useSharedValue, withSpring } from 'react-native-reanimated';
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interface Props {
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onConfirm: () => void;
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label?: string;
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color?: string;
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threshold?: number;
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disabled?: boolean;
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style?: ViewStyle;
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}
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const TRACK_HEIGHT = 60;
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const HANDLE_SIZE = 48;
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const TRACK_PADDING = 5;
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export function SlideToConfirm({
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onConfirm,
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label = 'Slide to confirm',
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color = '#059669',
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threshold = 0.82,
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disabled = false,
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style,
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}: Props) {
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const translateX = useSharedValue(0);
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const maxX = useSharedValue(200); // updated on layout
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const triggerConfirm = useCallback(() => { onConfirm(); }, [onConfirm]);
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const pan = Gesture.Pan()
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.enabled(!disabled)
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.minDistance(0)
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.activeOffsetX([-5, 5])
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.onUpdate((e) => {
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'worklet';
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translateX.value = Math.max(0, Math.min(e.translationX, maxX.value));
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})
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.onEnd(() => {
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'worklet';
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if (translateX.value >= maxX.value * threshold) {
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translateX.value = withSpring(maxX.value, { damping: 20, stiffness: 200, mass: 0.8 });
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runOnJS(triggerConfirm)();
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} else {
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translateX.value = withSpring(0, { damping: 20, stiffness: 200, mass: 0.8 });
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}
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});
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const animatedHandle = useAnimatedStyle(() => ({
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transform: [{ translateX: translateX.value }],
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}));
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const animatedFill = useAnimatedStyle(() => ({
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width: translateX.value + HANDLE_SIZE + TRACK_PADDING,
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}));
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const animatedLabel = useAnimatedStyle(() => ({
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opacity: Math.max(0, 1 - (translateX.value / Math.max(maxX.value * 0.5, 1))),
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}));
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return (
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// GestureHandlerRootView inside Modal is REQUIRED on iOS New Arch
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// Modal creates a new UIWindow — RNGH's gesture manager must be re-rooted here
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<GestureHandlerRootView style={[styles.root, style]}>
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<View
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style={[styles.track, { borderColor: color + '50' }]}
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onLayout={(e) => {
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const w = e.nativeEvent.layout.width;
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maxX.value = w - HANDLE_SIZE - TRACK_PADDING * 2;
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}}
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>
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{/* Colored fill that grows behind the handle */}
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<Animated.View style={[styles.fill, { backgroundColor: color + '28' }, animatedFill]} />
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{/* Label fades as handle moves right */}
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<Animated.Text
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style={[styles.label, { paddingLeft: HANDLE_SIZE + TRACK_PADDING * 3 }, animatedLabel]}
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numberOfLines={1}
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>
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{label}
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</Animated.Text>
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{/* Draggable handle */}
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<GestureDetector gesture={pan}>
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<Animated.View style={[
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styles.handle,
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{ backgroundColor: disabled ? '#CBD5E1' : color, width: HANDLE_SIZE, height: HANDLE_SIZE, borderRadius: HANDLE_SIZE / 2, top: (TRACK_HEIGHT - HANDLE_SIZE) / 2, left: TRACK_PADDING },
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animatedHandle,
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]}>
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<Text style={styles.arrow}>›</Text>
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</Animated.View>
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</GestureDetector>
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</View>
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</GestureHandlerRootView>
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);
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}
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const styles = StyleSheet.create({
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root: { width: '100%' },
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track: {
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height: TRACK_HEIGHT, borderRadius: TRACK_HEIGHT / 2,
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backgroundColor: '#F1F5F9', borderWidth: 1.5,
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justifyContent: 'center', alignItems: 'center',
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overflow: 'hidden', position: 'relative',
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},
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fill: {
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position: 'absolute', left: 0, top: 0,
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height: TRACK_HEIGHT, zIndex: 1,
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},
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label: {
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position: 'absolute', zIndex: 2,
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fontSize: 14, fontWeight: '700', color: '#64748B',
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textAlign: 'center', width: '100%', paddingRight: 16,
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},
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handle: {
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position: 'absolute', zIndex: 3,
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justifyContent: 'center', alignItems: 'center',
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shadowColor: '#000', shadowOffset: { width: 0, height: 2 },
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shadowOpacity: 0.18, shadowRadius: 4, elevation: 4,
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},
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arrow: { fontSize: 26, color: '#fff', fontWeight: '800', marginLeft: 2 },
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});
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