赵忠林
1fa58040f3
- 新增地址类型定义，增强前端地址数据结构 - 新增地址编辑页面，支持地址智能识别和定位选点功能 - 地址编辑支持省市区选择及默认地址设置 - 新增地址列表页面，支持地址展示、删除、编辑和选择功能 - 实现售后申请页面，支持选择售后类型和退款原因 - 售后申请支持商品选择、退款金额计算和凭证上传 - 新增售后详情页面，支持售后状态展示及申请取消 - 优化页面加载和用户交互体验，增加错误提示和权限处理
58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
import { View, Image, Text } from '@tarojs/components';
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import { useState, useEffect } from 'react';
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import { useIntersectionObserver } from '@tarojs/taro';
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interface LazyImageProps {
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src: string;
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placeholder?: string;
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className?: string;
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style?: React.CSSProperties;
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mode?: 'scaleToFill' | 'aspectFit' | 'aspectFill' | 'widthFix' | 'heightFix' | 'top' | 'bottom' | 'center' | 'left' | 'right' | 'top left' | 'top right' | 'bottom left' | 'bottom right';
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}
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export default function LazyImage({ src, placeholder, className, style, mode = 'aspectFill' }: LazyImageProps) {
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const [loaded, setLoaded] = useState(false);
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const [inView, setInView] = useState(false);
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const { intersectionObserver } = useIntersectionObserver();
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useEffect(() => {
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if (!intersectionObserver) return;
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intersectionObserver.relativeToViewport();
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intersectionObserver.observe({
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type: 'relativeToViewport',
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success: (res) => {
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if (res.intersectionRatio > 0) {
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setInView(true);
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}
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}
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});
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return () => {
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intersectionObserver.disconnect();
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};
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}, [intersectionObserver]);
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return (
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<View className={className} style={style}>
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{!loaded && (
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<View className="w-full h-full bg-gray-200 flex items-center justify-center">
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{placeholder ? (
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<Image src={placeholder} className="w-full h-full" mode={mode} />
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) : (
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<Text className="text-gray-400 text-sm">加载中...</Text>
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)}
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</View>
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)}
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{(inView || loaded) && (
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<Image
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src={src}
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className={`w-full h-full ${loaded ? 'block' : 'hidden'}`}
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mode={mode}
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onLoad={() => setLoaded(true)}
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/>
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)}
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</View>
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);
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}
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