464 lines
16 KiB
Dart
464 lines
16 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:qhd_prevention/tools/VideoConverter.dart';
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import 'package:video_compress/video_compress.dart';
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import 'package:wechat_assets_picker/wechat_assets_picker.dart';
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import 'package:photo_manager/photo_manager.dart';
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import 'package:path/path.dart' as p;
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import 'ItemWidgetFactory.dart';
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/// 媒体选择类型
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enum MediaType { image, video }
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/// 纵向滚动四列的媒体添加组件，支持拍摄、全屏相册多选，以及初始地址列表展示
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/// 新增 isEdit 属性控制编辑状态
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class MediaPickerRow extends StatefulWidget {
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final int maxCount;
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final MediaType mediaType;
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final List<String>? initialMediaPaths;
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final ValueChanged<List<File>> onChanged;
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final ValueChanged<String>? onMediaAdded;
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final ValueChanged<String>? onMediaRemoved;
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final ValueChanged<String>? onMediaTapped; // 新增：媒体点击回调
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final bool isEdit; // 新增：控制编辑状态
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final bool isCamera; // 新增：只能拍照
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const MediaPickerRow({
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Key? key,
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this.maxCount = 4,
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this.mediaType = MediaType.image,
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this.initialMediaPaths,
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required this.onChanged,
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this.onMediaAdded,
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this.onMediaRemoved,
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this.onMediaTapped, // 新增
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this.isEdit = true, // 默认可编辑
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this.isCamera = false,
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}) : super(key: key);
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@override
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_MediaPickerGridState createState() => _MediaPickerGridState();
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}
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class _MediaPickerGridState extends State<MediaPickerRow> {
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final ImagePicker _picker = ImagePicker();
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late List<String> _mediaPaths;
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bool _isProcessing = false; // 转码或处理时显示 loading
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@override
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void initState() {
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super.initState();
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_mediaPaths = widget.initialMediaPaths != null
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? widget.initialMediaPaths!.take(widget.maxCount).toList()
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: [];
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WidgetsBinding.instance.addPostFrameCallback((_) {
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widget.onChanged(
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_mediaPaths.map((p) => p.startsWith('http') ? File('') : File(p)).toList(),
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);
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});
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}
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// 公共：当得到本地媒体路径时（可能是 mov/avi 等），需要在这里统一处理（转码、入队、回调）
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Future<void> _handlePickedPath(String path) async {
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if (!mounted) return;
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if (path.isEmpty) return;
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try {
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String finalPath = path;
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// 如果是视频并且不是 mp4，则调用 video_compress 转码
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if (widget.mediaType == MediaType.video) {
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final ext = p.extension(path).toLowerCase();
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if (ext != '.mp4') {
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setState(() => _isProcessing = true);
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try {
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final info = await VideoCompress.compressVideo(
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path,
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quality: VideoQuality.MediumQuality,
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deleteOrigin: false,
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);
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if (info != null && info.file != null) {
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finalPath = info.file!.path;
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debugPrint('✅ 转换完成: $path -> $finalPath');
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} else {
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throw Exception("转码失败: 返回空文件");
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}
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} catch (e) {
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debugPrint('❌ 视频转码失败: $e');
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('视频转码失败: ${e.toString()}')),
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);
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}
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return;
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} finally {
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if (mounted) setState(() => _isProcessing = false);
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}
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}
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}
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// 添加到列表
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if (_mediaPaths.length < widget.maxCount) {
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setState(() => _mediaPaths.add(finalPath));
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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widget.onMediaAdded?.call(finalPath);
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}
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} catch (e) {
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debugPrint('处理选中媒体失败: $e');
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}
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}
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Future<void> _cameraAction() async {
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if (!widget.isEdit || _mediaPaths.length >= widget.maxCount) return;
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try {
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if (widget.mediaType == MediaType.image) {
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XFile? picked = await _picker.pickImage(source: ImageSource.camera);
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if (picked != null) {
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final path = picked.path;
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setState(() => _mediaPaths.add(path));
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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widget.onMediaAdded?.call(path);
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}
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} else {
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// video from camera
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XFile? picked = await _picker.pickVideo(source: ImageSource.camera);
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if (picked != null) {
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await _handlePickedPath(picked.path);
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}
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}
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} catch (e) {
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debugPrint('拍摄失败: $e');
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}
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}
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Future<void> _showPickerOptions() async {
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if (!widget.isEdit) return; // 不可编辑时直接返回
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showModalBottomSheet(
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context: context,
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backgroundColor: Colors.white,
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builder: (_) => SafeArea(
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child: Wrap(
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children: [
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ListTile(
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titleAlignment: ListTileTitleAlignment.center,
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leading: Icon(
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widget.mediaType == MediaType.image ? Icons.camera_alt : Icons.videocam,
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),
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title: Text(widget.mediaType == MediaType.image ? '拍照' : '拍摄视频'),
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onTap: () {
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Navigator.of(context).pop();
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_pickCamera();
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},
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),
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ListTile(
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titleAlignment: ListTileTitleAlignment.center,
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leading: Icon(
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widget.mediaType == MediaType.image ? Icons.photo_library : Icons.video_library,
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),
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title: Text(widget.mediaType == MediaType.image ? '从相册选择' : '从相册选择视频'),
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onTap: () {
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Navigator.of(context).pop();
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_pickGallery();
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},
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),
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ListTile(
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titleAlignment: ListTileTitleAlignment.center,
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leading: const Icon(Icons.close),
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title: const Text('取消'),
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onTap: () => Navigator.of(context).pop(),
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),
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],
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),
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),
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);
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}
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Future<void> _pickCamera() async {
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if (!widget.isEdit || _mediaPaths.length >= widget.maxCount) return;
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try {
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XFile? picked;
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if (widget.mediaType == MediaType.image) {
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picked = await _picker.pickImage(source: ImageSource.camera);
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if (picked != null) {
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final path = picked.path;
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setState(() => _mediaPaths.add(path));
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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widget.onMediaAdded?.call(path);
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}
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} else {
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picked = await _picker.pickVideo(source: ImageSource.camera);
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if (picked != null) {
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await _handlePickedPath(picked.path);
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}
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}
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} catch (e) {
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debugPrint('拍摄失败: $e');
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}
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}
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Future<void> _pickGallery() async {
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if (!widget.isEdit || _mediaPaths.length >= widget.maxCount) return;
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final permission = await PhotoManager.requestPermissionExtend();
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if (permission != PermissionState.authorized &&
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permission != PermissionState.limited) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('请到设置中开启相册访问权限')),
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);
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return;
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}
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try {
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final remaining = widget.maxCount - _mediaPaths.length;
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final List<AssetEntity>? assets = await AssetPicker.pickAssets(
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context,
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pickerConfig: AssetPickerConfig(
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requestType: widget.mediaType == MediaType.image ? RequestType.image : RequestType.video,
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maxAssets: remaining,
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gridCount: 4,
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),
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);
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if (assets != null) {
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for (final asset in assets) {
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if (_mediaPaths.length >= widget.maxCount) break;
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final file = await asset.file;
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if (file != null) {
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final path = file.path;
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// 交给统一处理（会转码视频）
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await _handlePickedPath(path);
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}
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}
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setState(() {});
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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}
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} catch (e) {
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debugPrint('相册选择失败: $e');
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}
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}
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void _removeMedia(int index) {
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if (!widget.isEdit) return; // 不可编辑时不允许删除
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final removed = _mediaPaths[index];
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setState(() => _mediaPaths.removeAt(index));
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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widget.onMediaRemoved?.call(removed);
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}
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@override
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Widget build(BuildContext context) {
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final showAddButton = widget.isEdit && _mediaPaths.length < widget.maxCount;
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final itemCount = _mediaPaths.length + (showAddButton ? 1 : 0);
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return Stack(
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children: [
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GridView.builder(
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 4,
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crossAxisSpacing: 8,
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mainAxisSpacing: 8,
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childAspectRatio: 1,
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),
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itemCount: itemCount,
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itemBuilder: (context, index) {
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// 显示媒体项
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if (index < _mediaPaths.length) {
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final path = _mediaPaths[index];
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final isNetwork = path.startsWith('http');
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return GestureDetector(
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onTap: () => widget.onMediaTapped?.call(path),
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child: Stack(
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children: [
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ClipRRect(
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borderRadius: BorderRadius.circular(5),
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child: widget.mediaType == MediaType.image
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? (isNetwork
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? Image.network(path, fit: BoxFit.cover, width: 80, height: 80)
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: Image.file(File(path), width: 80, height: 80, fit: BoxFit.cover))
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: Container(
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color: Colors.black12,
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child: const Center(
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child: Icon(
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Icons.videocam,
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color: Colors.white70,
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),
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),
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),
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),
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// 只在可编辑状态下显示删除按钮
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if (widget.isEdit)
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Positioned(
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top: -15,
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right: -15,
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child: IconButton(
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icon: const Icon(Icons.cancel, size: 20, color: Colors.red),
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onPressed: () => _removeMedia(index),
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),
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),
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],
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),
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);
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}
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// 显示添加按钮
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else if (showAddButton) {
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return GestureDetector(
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onTap: widget.isCamera ? _cameraAction : _showPickerOptions,
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child: Container(
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decoration: BoxDecoration(
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border: Border.all(color: Colors.black12),
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borderRadius: BorderRadius.circular(5),
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),
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child: const Center(
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child: Icon(Icons.camera_alt, color: Colors.black26),
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),
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),
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);
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} else {
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return const SizedBox.shrink();
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}
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},
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),
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// 转码/处理 loading 遮罩
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if (_isProcessing)
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Positioned.fill(
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child: Container(
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color: Colors.transparent,
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child: const Center(
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child: CircularProgressIndicator(),
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),
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),
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),
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],
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);
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}
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}
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/// 照片上传区域组件，使用纵向四列Grid展示
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/// 新增 isEdit 属性控制编辑状态
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class RepairedPhotoSection extends StatefulWidget {
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final int maxCount;
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final MediaType mediaType;
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final String title;
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final List<String>? initialMediaPaths;
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final ValueChanged<List<File>> onChanged;
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final ValueChanged<String>? onMediaAdded;
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final ValueChanged<String>? onMediaRemoved;
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final ValueChanged<String>? onMediaTapped; // 新增：媒体点击回调
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final VoidCallback onAiIdentify;
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final bool isShowAI;
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final double horizontalPadding;
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final bool isRequired;
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final bool isShowNum;
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final bool isEdit; // 新增：控制编辑状态
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final bool isCamera; // 新增：只能拍照
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const RepairedPhotoSection({
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Key? key,
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this.maxCount = 4,
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this.mediaType = MediaType.image,
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required this.title,
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this.initialMediaPaths,
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this.isShowAI = false,
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required this.onChanged,
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required this.onAiIdentify,
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this.horizontalPadding = 5,
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this.onMediaAdded,
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this.onMediaRemoved,
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this.onMediaTapped, // 新增
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this.isRequired = false,
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this.isShowNum = true,
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this.isEdit = true, // 默认可编辑
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this.isCamera = false,
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}) : super(key: key);
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@override
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_RepairedPhotoSectionState createState() => _RepairedPhotoSectionState();
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}
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class _RepairedPhotoSectionState extends State<RepairedPhotoSection> {
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late List<String> _mediaPaths;
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@override
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void initState() {
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super.initState();
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_mediaPaths = widget.initialMediaPaths?.take(widget.maxCount).toList() ?? [];
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WidgetsBinding.instance.addPostFrameCallback((_) {
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widget.onChanged(_mediaPaths.map((p) => File(p)).toList());
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});
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}
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@override
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Widget build(BuildContext context) {
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return Container(
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color: Colors.white,
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padding: const EdgeInsets.only(left: 0, right: 10),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Padding(
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padding: EdgeInsets.symmetric(horizontal: widget.horizontalPadding),
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child: ListItemFactory.createRowSpaceBetweenItem(
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leftText: widget.title,
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rightText: widget.isShowNum ? '${_mediaPaths.length}/${widget.maxCount}' : '',
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isRequired: widget.isRequired,
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),
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),
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const SizedBox(height: 8),
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Padding(
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padding: EdgeInsets.symmetric(horizontal: widget.horizontalPadding),
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child: MediaPickerRow(
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maxCount: widget.maxCount,
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mediaType: widget.mediaType,
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initialMediaPaths: _mediaPaths,
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isCamera: widget.isCamera,
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onChanged: (files) {
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final newPaths = files.map((f) => f.path).toList();
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setState(() {
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_mediaPaths = newPaths;
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});
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widget.onChanged(files);
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},
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onMediaAdded: widget.onMediaAdded,
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onMediaRemoved: widget.onMediaRemoved,
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onMediaTapped: widget.onMediaTapped, // 传递点击回调
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isEdit: widget.isEdit, // 传递编辑状态
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),
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),
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const SizedBox(height: 20),
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if (widget.isShowAI && widget.isEdit) // 只在可编辑状态下显示AI按钮
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Padding(
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padding: EdgeInsets.symmetric(horizontal: widget.horizontalPadding),
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child: GestureDetector(
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onTap: widget.onAiIdentify,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 15),
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height: 36,
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decoration: BoxDecoration(
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color: const Color(0xFFDFEAFF),
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borderRadius: BorderRadius.circular(18),
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Image.asset('assets/images/ai_img.png', width: 20),
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const SizedBox(width: 5),
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const Text('AI隐患识别与处理'),
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],
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),
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),
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),
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),
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],
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),
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);
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}
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}
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