generated from dellevin/template
956 lines
31 KiB
Dart
956 lines
31 KiB
Dart
import 'dart:io';
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:path/path.dart' as p;
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import 'package:flutter_markdown_plus/flutter_markdown_plus.dart';
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import '../../providers/app_provider.dart';
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import '../../models/data_models.dart';
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import '../../utils/toast_util.dart';
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import '../../utils/image_path_helper.dart';
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import '../../widgets/fade_in_local_image.dart';
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import '../../widgets/tag_side_panel.dart';
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/// 添加/编辑笔记页面 - 极简书写界面
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class NoteFormPage extends StatefulWidget {
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final Note? note;
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const NoteFormPage({super.key, this.note});
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@override
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State<NoteFormPage> createState() => _NoteFormPageState();
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}
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class _NoteFormPageState extends State<NoteFormPage> {
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late TextEditingController _titleController;
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late TextEditingController _contentController;
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late DateTime _createdAt;
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List<String> _tags = [];
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List<String> _images = []; // 图片路径列表
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bool _isEditing = false;
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final ImagePicker _picker = ImagePicker();
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String? _tempNoteId; // 新建模式时使用的临时笔记ID
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String _editorMode = 'edit'; // 'edit' | 'preview'
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Timer? _autoSaveTimer;
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Timer? _saveStatusTimer;
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String _saveStatus = ''; // '', 'saved'
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Note? _savedNote; // 新建模式首次自动保存后的笔记引用
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static const _weekdays = ['一', '二', '三', '四', '五', '六', '日'];
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@override
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void initState() {
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super.initState();
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final note = widget.note;
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_titleController = TextEditingController(text: note?.title ?? '');
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final text = note?.content ?? '';
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_contentController = TextEditingController(text: text);
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_createdAt = note?.createdAt ?? DateTime.now();
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_tags = note != null ? List.from(note.tags) : [];
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_images = note != null ? List.from(note.images) : [];
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_isEditing = note != null;
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_titleController.addListener(_onTextChanged);
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_contentController.addListener(_onTextChanged);
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}
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@override
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void dispose() {
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_autoSaveTimer?.cancel();
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_saveStatusTimer?.cancel();
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_titleController.dispose();
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_contentController.dispose();
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super.dispose();
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}
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void _onTextChanged() {
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_autoSaveTimer?.cancel();
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_autoSaveTimer = Timer(const Duration(seconds: 2), () {
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if (mounted) _autoSave();
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});
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}
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Future<void> _autoSave() async {
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final content = _contentController.text.trim();
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final title = _titleController.text.trim();
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if (title.isEmpty && content.isEmpty) return;
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try {
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final now = DateTime.now();
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if (_isEditing) {
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final updatedNote = widget.note!.copyWith(
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title: title,
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content: content,
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tags: _tags,
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images: _images,
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updatedAt: now,
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);
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await context.read<AppProvider>().updateNote(updatedNote);
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} else if (_savedNote != null) {
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final updatedNote = _savedNote!.copyWith(
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title: title,
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content: content,
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tags: _tags,
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images: _images,
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updatedAt: now,
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);
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await context.read<AppProvider>().updateNote(updatedNote);
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_savedNote = updatedNote;
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} else {
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final noteId = now.millisecondsSinceEpoch.toString();
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List<String> finalImages = [];
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if (_images.isNotEmpty) {
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final oldNoteId = _tempNoteId ?? noteId;
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finalImages = await _moveImagesToNewId(oldNoteId, noteId);
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}
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final newNote = Note(
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id: noteId,
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title: title,
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content: content,
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tags: _tags,
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images: finalImages.isNotEmpty ? finalImages : _images,
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createdAt: _createdAt,
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updatedAt: now,
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);
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await context.read<AppProvider>().addNote(newNote);
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_savedNote = newNote;
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_isEditing = true;
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}
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if (mounted) {
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setState(() => _saveStatus = 'saved');
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_saveStatusTimer?.cancel();
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_saveStatusTimer = Timer(const Duration(seconds: 3), () {
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if (mounted && _saveStatus == 'saved') setState(() => _saveStatus = '');
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});
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}
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} catch (_) {
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// 自动保存失败静默处理
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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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final colors = Theme.of(context).colorScheme;
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final topPadding = MediaQuery.of(context).padding.top;
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return PopScope(
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canPop: false,
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onPopInvokedWithResult: (didPop, result) async {
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if (didPop) return;
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final shouldPop = await _confirmLeave();
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if (shouldPop && context.mounted) Navigator.pop(context);
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},
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child: Scaffold(
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backgroundColor: colors.surface,
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resizeToAvoidBottomInset: false,
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body: LayoutBuilder(
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builder: (context, constraints) {
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final keyboardH = MediaQuery.of(context).viewInsets.bottom;
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final contentH = constraints.maxHeight * 0.4;
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return Stack(
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children: [
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Column(
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children: [
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// 顶部区域 — 固定不动
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_buildHeader(colors, topPadding),
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// 可滚动内容
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Expanded(
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child: CustomScrollView(
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slivers: [
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// 标题行（点击编辑）
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SliverToBoxAdapter(child: _buildTitleInput(colors)),
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// 编辑区域 — 固定高度
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SliverToBoxAdapter(
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child: SizedBox(height: contentH, child: _buildContentArea()),
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),
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// 图片 + 标签 + 字数 — 随内容撑开
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SliverToBoxAdapter(child: _buildImageGrid()),
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SliverToBoxAdapter(child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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child: _buildTagChips(),
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)),
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SliverToBoxAdapter(child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
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child: Text(
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'一共${_contentController.text.length}字',
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style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.3)),
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),
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)),
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// 与工具栏的间距
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const SliverToBoxAdapter(child: SizedBox(height: 80)),
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],
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),
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),
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],
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),
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// 底部浮动工具栏 — 跟随键盘上移
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Positioned(
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left: 0,
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right: 0,
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bottom: keyboardH,
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child: _buildFloatingToolbar(),
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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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/// 顶部区域：返回 / 年月日 周几 / 保存按钮
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Widget _buildHeader(ColorScheme colors, double topPadding) {
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return Container(
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padding: EdgeInsets.fromLTRB(4, topPadding + 4, 12, 10),
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decoration: BoxDecoration(
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border: Border(bottom: BorderSide(color: colors.outlineVariant, width: 0.5)),
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),
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child: Row(
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children: [
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IconButton(
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onPressed: () async {
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final shouldPop = await _confirmLeave();
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if (shouldPop && context.mounted) Navigator.pop(context);
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},
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icon: Icon(Icons.arrow_back_ios_new, size: 20, color: colors.onSurface.withValues(alpha: 0.7)),
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),
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Expanded(
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child: Text(
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'${_createdAt.year}年${_createdAt.month}月${_createdAt.day}日 周${_weekdays[_createdAt.weekday - 1]}',
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style: TextStyle(fontSize: 17, fontWeight: FontWeight.w600, color: colors.onSurface),
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),
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),
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if (_saveStatus == 'saved')
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Padding(
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padding: const EdgeInsets.only(right: 8),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(width: 6, height: 6,
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decoration: BoxDecoration(color: Colors.green, shape: BoxShape.circle)),
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const SizedBox(width: 4),
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Text('已保存', style: TextStyle(fontSize: 11, color: colors.onSurface.withValues(alpha: 0.4))),
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],
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),
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),
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GestureDetector(
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onTap: _saveNote,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
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decoration: BoxDecoration(
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color: colors.primary,
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borderRadius: BorderRadius.circular(20),
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),
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child: Text('保存', style: TextStyle(fontSize: 13, fontWeight: FontWeight.w500, color: colors.onPrimary)),
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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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/// 在光标处插入 Markdown 语法，光标自动放到正确位置
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void _insertMarkdown(String left, String right) {
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final text = _contentController.text;
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final selection = _contentController.selection;
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final start = selection.start;
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final end = selection.end;
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String selectedText = '';
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if (end > start) {
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selectedText = text.substring(start, end);
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}
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final insertion = '$left$selectedText$right';
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// 原子更新：一次性设置 text 和 selection，避免分步操作导致光标跳动
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_contentController.value = TextEditingValue(
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text: text.substring(0, start) + insertion + text.substring(end),
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selection: TextSelection.collapsed(
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offset: selectedText.isEmpty
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? start + left.length
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: start + left.length + selectedText.length + right.length,
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),
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);
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}
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/// 现代极简底部工具栏
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Widget _buildFloatingToolbar() {
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final colors = Theme.of(context).colorScheme;
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return Container(
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margin: const EdgeInsets.fromLTRB(12, 8, 12, 10),
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
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decoration: BoxDecoration(
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color: colors.surfaceContainerHigh,
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borderRadius: BorderRadius.circular(12),
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border: Border.all(color: colors.outlineVariant, width: 0.5),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withValues(alpha: 0.04),
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blurRadius: 8,
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offset: const Offset(0, 1),
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),
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],
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),
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child: Row(
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children: [
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// 格式按钮组
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Expanded(
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child: SingleChildScrollView(
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scrollDirection: Axis.horizontal,
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child: Row(
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children: [
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_toolBtn(Icons.title, '标题', _insertHeading),
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_toolBtn(Icons.format_bold, '粗体', () => _insertMarkdown('**', '**')),
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_toolBtn(Icons.format_italic, '斜体', () => _insertMarkdown('*', '*')),
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_toolBtn(Icons.format_strikethrough, '删除线', () => _insertMarkdown('~~', '~~')),
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_toolGap(),
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_toolBtn(Icons.format_list_bulleted, '无序列表', () => _insertMarkdown('- ', '')),
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_toolBtn(Icons.format_list_numbered, '有序列表', () => _insertMarkdown('1. ', '')),
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_toolBtn(Icons.format_quote, '引用', () => _insertMarkdown('> ', '')),
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_toolBtn(Icons.insert_link, '链接', () => _insertMarkdown('[', '](url)')),
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_toolGap(),
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_toolBtn(Icons.code, '行内代码', () => _insertMarkdown('`', '`')),
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_toolBtn(Icons.data_object, '代码块', () => _insertMarkdown('```\n', '\n```')),
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_toolBtn(Icons.horizontal_rule, '分割线', () => _insertMarkdown('---\n', '')),
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],
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),
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),
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),
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// 视图模式切换
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const SizedBox(width: 8),
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Container(
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width: 1, height: 20, color: colors.outline,
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),
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const SizedBox(width: 8),
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_modeSwitch(Icons.edit, 'edit'),
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_modeSwitch(Icons.visibility, 'preview'),
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],
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),
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);
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}
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Widget _toolBtn(IconData icon, String tooltip, VoidCallback onTap) {
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final colors = Theme.of(context).colorScheme;
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return Material(
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color: Colors.transparent,
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child: InkWell(
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onTap: onTap,
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borderRadius: BorderRadius.circular(8),
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child: Tooltip(
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message: tooltip,
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 6),
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child: Icon(icon, size: 21, color: colors.onSurface.withValues(alpha: 0.7)),
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),
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),
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),
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);
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}
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Widget _toolGap() {
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final colors = Theme.of(context).colorScheme;
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 6),
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child: SizedBox(
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height: 18,
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child: VerticalDivider(width: 0, thickness: 0.5, color: colors.outline),
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),
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);
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}
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Widget _modeSwitch(IconData icon, String mode) {
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final colors = Theme.of(context).colorScheme;
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final active = _editorMode == mode;
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return Material(
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color: Colors.transparent,
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child: InkWell(
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onTap: () => setState(() => _editorMode = mode),
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borderRadius: BorderRadius.circular(8),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 6),
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decoration: BoxDecoration(
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color: active ? colors.primary : Colors.transparent,
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borderRadius: BorderRadius.circular(8),
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),
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child: Icon(
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icon,
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size: 18,
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color: active ? colors.onPrimary : colors.onSurface.withValues(alpha: 0.35),
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),
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),
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),
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);
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}
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/// 插入标题（在当前行首插入 # ，如果已有则升级 ## → ### → ####）
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void _insertHeading() {
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final text = _contentController.text;
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final selection = _contentController.selection;
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final start = selection.start;
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// 找到当前行起始位置
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int lineStart = start;
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while (lineStart > 0 && text[lineStart - 1] != '\n') {
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lineStart--;
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}
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// 计算当前行的 # 前缀
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int hashCount = 0;
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int pos = lineStart;
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while (pos < text.length && text[pos] == '#') {
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hashCount++;
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pos++;
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}
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// 跳过 # 后的空格
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if (pos < text.length && text[pos] == ' ') pos++;
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String newPrefix;
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int cursorOffset;
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if (hashCount > 0 && hashCount < 6) {
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// 升级标题级别
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hashCount++;
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newPrefix = '${'#' * hashCount} ';
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cursorOffset = newPrefix.length;
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// 替换旧前缀
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_contentController.value = TextEditingValue(
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text: text.substring(0, lineStart) + newPrefix + text.substring(pos),
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selection: TextSelection.collapsed(offset: lineStart + cursorOffset),
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);
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} else if (hashCount >= 6) {
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// 已经是 H6，重置为普通文本
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_contentController.value = TextEditingValue(
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text: text.substring(0, lineStart) + text.substring(pos),
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selection: TextSelection.collapsed(offset: lineStart),
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);
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} else {
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// 没有 # 前缀，添加 H1
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newPrefix = '# ';
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_contentController.value = TextEditingValue(
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text: text.substring(0, lineStart) + newPrefix + text.substring(lineStart),
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selection: TextSelection.collapsed(offset: lineStart + 2),
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);
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}
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}
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/// 根据 _editorMode 构建内容区域
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Widget _buildContentArea() {
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switch (_editorMode) {
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case 'preview':
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return _buildPreview();
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case 'edit':
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default:
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return _buildEditor();
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}
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}
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/// 编辑器
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Widget _buildEditor() {
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final colors = Theme.of(context).colorScheme;
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return TextField(
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controller: _contentController,
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maxLines: null,
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expands: true,
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textAlignVertical: TextAlignVertical.top,
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strutStyle: const StrutStyle(
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forceStrutHeight: true,
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height: 1.6,
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fontSize: 14,
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),
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style: TextStyle(
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fontSize: 14,
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color: colors.onSurface,
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height: 1.6,
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),
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decoration: InputDecoration(
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hintText: '使用 Markdown 格式书写...',
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hintStyle: TextStyle(
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fontSize: 14,
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color: colors.onSurface.withValues(alpha: 0.25),
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height: 1.6,
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),
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border: InputBorder.none,
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focusedBorder: InputBorder.none,
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contentPadding: const EdgeInsets.all(16),
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),
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);
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}
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/// 实时 Markdown 预览（点击回到编辑）
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Widget _buildPreview() {
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final colors = Theme.of(context).colorScheme;
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final text = _contentController.text;
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return GestureDetector(
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onTap: () => setState(() => _editorMode = 'edit'),
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behavior: HitTestBehavior.opaque,
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child: Container(
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color: colors.surfaceContainerHigh,
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child: text.isEmpty
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? Center(
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child: Text(
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'预览区域',
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style: TextStyle(
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fontSize: 14,
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color: colors.onSurface.withValues(alpha: 0.25),
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),
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),
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)
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: Markdown(
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data: text,
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selectable: true,
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padding: const EdgeInsets.all(16),
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styleSheet: MarkdownStyleSheet(
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h1: TextStyle(
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fontSize: 22,
|
||
fontWeight: FontWeight.w600,
|
||
color: colors.onSurface,
|
||
height: 1.4,
|
||
),
|
||
h2: TextStyle(
|
||
fontSize: 19,
|
||
fontWeight: FontWeight.w600,
|
||
color: colors.onSurface,
|
||
height: 1.4,
|
||
),
|
||
h3: TextStyle(
|
||
fontSize: 17,
|
||
fontWeight: FontWeight.w600,
|
||
color: colors.onSurface,
|
||
height: 1.4,
|
||
),
|
||
p: TextStyle(
|
||
fontSize: 15,
|
||
color: colors.onSurface.withValues(alpha: 0.75),
|
||
height: 1.7,
|
||
),
|
||
code: TextStyle(
|
||
fontSize: 14,
|
||
color: colors.onSurface,
|
||
backgroundColor: colors.outlineVariant,
|
||
),
|
||
codeblockDecoration: BoxDecoration(
|
||
color: colors.outlineVariant,
|
||
borderRadius: BorderRadius.circular(6),
|
||
),
|
||
blockquote: TextStyle(
|
||
fontSize: 15,
|
||
color: colors.onSurface.withValues(alpha: 0.6),
|
||
),
|
||
blockquoteDecoration: BoxDecoration(
|
||
border: Border(
|
||
left: BorderSide(color: colors.onSurface.withValues(alpha: 0.25), width: 3),
|
||
),
|
||
),
|
||
),
|
||
),
|
||
));
|
||
}
|
||
|
||
/// 标签 chips 行（右侧展示）
|
||
Widget _buildTagChips() {
|
||
return Wrap(
|
||
spacing: 6,
|
||
runSpacing: 4,
|
||
children: [
|
||
for (int i = 0; i < _tags.length; i++) _buildTagChip(i),
|
||
_buildAddTagButton(),
|
||
],
|
||
);
|
||
}
|
||
|
||
Widget _buildTagChip(int index) {
|
||
final colors = Theme.of(context).colorScheme;
|
||
return Container(
|
||
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
|
||
decoration: BoxDecoration(
|
||
color: colors.surfaceContainerHighest,
|
||
borderRadius: BorderRadius.circular(6),
|
||
),
|
||
child: Row(
|
||
mainAxisSize: MainAxisSize.min,
|
||
children: [
|
||
Text(
|
||
_tags[index],
|
||
style: TextStyle(fontSize: 11, color: colors.onSurface.withValues(alpha: 0.6)),
|
||
),
|
||
const SizedBox(width: 3),
|
||
GestureDetector(
|
||
onTap: () => setState(() => _tags.removeAt(index)),
|
||
child: Icon(Icons.close, size: 10, color: colors.onSurface.withValues(alpha: 0.3)),
|
||
),
|
||
],
|
||
),
|
||
);
|
||
}
|
||
|
||
Widget _buildAddTagButton() {
|
||
final colors = Theme.of(context).colorScheme;
|
||
return GestureDetector(
|
||
onTap: _showTagPanel,
|
||
child: Container(
|
||
padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 4),
|
||
decoration: BoxDecoration(
|
||
borderRadius: BorderRadius.circular(6),
|
||
border: Border.all(color: colors.onSurface.withValues(alpha: 0.25), width: 1),
|
||
),
|
||
child: Row(
|
||
mainAxisSize: MainAxisSize.min,
|
||
children: [
|
||
Icon(Icons.add, size: 12, color: colors.onSurface.withValues(alpha: 0.35)),
|
||
const SizedBox(width: 2),
|
||
Text('标签', style: TextStyle(fontSize: 11, color: colors.onSurface.withValues(alpha: 0.35))),
|
||
],
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 显示标签侧边面板
|
||
Future<void> _showTagPanel() async {
|
||
final provider = context.read<AppProvider>();
|
||
final tagRows = await provider.getTags('note_tag');
|
||
final allTags = tagRows.map((t) => t['name'] as String).toSet();
|
||
for (final note in provider.notes) {
|
||
allTags.addAll(note.tags);
|
||
}
|
||
|
||
if (!mounted) return;
|
||
TagSidePanel.show(
|
||
context: context,
|
||
selectedTags: List.from(_tags),
|
||
allAvailableTags: allTags.toList()..sort(),
|
||
onTagsChanged: (newTags) {
|
||
setState(() => _tags = newTags);
|
||
},
|
||
);
|
||
}
|
||
|
||
/// 标题输入行
|
||
Widget _buildTitleInput(ColorScheme colors) {
|
||
return Padding(
|
||
padding: const EdgeInsets.symmetric(horizontal: 16),
|
||
child: TextField(
|
||
controller: _titleController,
|
||
maxLines: 1,
|
||
style: TextStyle(fontSize: 15, fontWeight: FontWeight.w700, color: colors.onSurface),
|
||
decoration: InputDecoration(
|
||
hintText: '添加标题',
|
||
hintStyle: TextStyle(fontSize: 15, fontWeight: FontWeight.w700, color: colors.onSurface.withValues(alpha: 0.2)),
|
||
border: InputBorder.none,
|
||
focusedBorder: InputBorder.none,
|
||
contentPadding: const EdgeInsets.symmetric(vertical: 8),
|
||
isDense: true,
|
||
),
|
||
onChanged: (_) => setState(() {}),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 检查表单是否有内容
|
||
bool _hasContent() {
|
||
if (_isEditing) return true;
|
||
if (_titleController.text.trim().isNotEmpty) return true;
|
||
if (_contentController.text.trim().isNotEmpty) return true;
|
||
if (_images.isNotEmpty) return true;
|
||
if (_tags.isNotEmpty) return true;
|
||
return false;
|
||
}
|
||
|
||
/// 离开确认（自动保存后直接返回）
|
||
Future<bool> _confirmLeave() async {
|
||
_autoSaveTimer?.cancel();
|
||
if (_hasContent()) await _autoSave();
|
||
return true;
|
||
}
|
||
|
||
Future<void> _saveNote() async {
|
||
_autoSaveTimer?.cancel();
|
||
final content = _contentController.text.trim();
|
||
final title = _titleController.text.trim();
|
||
|
||
if (title.isEmpty && content.isEmpty) {
|
||
ToastUtil.show(context, '标题或内容不能为空');
|
||
return;
|
||
}
|
||
|
||
try {
|
||
final now = DateTime.now();
|
||
|
||
if (_isEditing) {
|
||
// 更新现有笔记
|
||
final updatedNote = widget.note!.copyWith(
|
||
title: _titleController.text.trim(),
|
||
content: content,
|
||
tags: _tags,
|
||
images: _images,
|
||
updatedAt: now,
|
||
);
|
||
await context.read<AppProvider>().updateNote(updatedNote);
|
||
} else {
|
||
// 添加新笔记 - 先创建笔记获取ID
|
||
final noteId = now.millisecondsSinceEpoch.toString();
|
||
|
||
// 如果有图片，需要移动到正确的ID目录
|
||
List<String> finalImages = [];
|
||
if (_images.isNotEmpty) {
|
||
// 使用保存的临时ID，如果没有则使用当前noteId（理论上不会走到这里）
|
||
final oldNoteId = _tempNoteId ?? noteId;
|
||
final newNoteId = noteId;
|
||
finalImages = await _moveImagesToNewId(oldNoteId, newNoteId);
|
||
}
|
||
|
||
final title = _titleController.text.trim();
|
||
|
||
final newNote = Note(
|
||
id: noteId,
|
||
title: title,
|
||
content: content,
|
||
tags: _tags,
|
||
images: finalImages.isNotEmpty ? finalImages : _images,
|
||
createdAt: _createdAt,
|
||
updatedAt: now,
|
||
);
|
||
await context.read<AppProvider>().addNote(newNote);
|
||
}
|
||
|
||
if (!mounted) return;
|
||
|
||
ToastUtil.show(context, _isEditing ? '保存成功' : '添加成功');
|
||
|
||
// 刷新笔记列表
|
||
await context.read<AppProvider>().loadNotes();
|
||
|
||
if (!mounted) return;
|
||
Navigator.pop(context);
|
||
} catch (e) {
|
||
if (!mounted) return;
|
||
ToastUtil.show(context, '保存失败: $e');
|
||
}
|
||
}
|
||
|
||
/// 将图片从临时ID目录移动到新ID目录
|
||
Future<List<String>> _moveImagesToNewId(String oldNoteId, String newNoteId) async {
|
||
final List<String> newPaths = [];
|
||
|
||
final newDir = await ImagePathHelper.instance.getNoteImagesDir(newNoteId);
|
||
|
||
for (final imagePath in _images) {
|
||
// 使用路径分隔符检查，兼容 Windows 和 Unix
|
||
final normalizedPath = imagePath.replaceAll('\\', '/');
|
||
if (normalizedPath.contains('/notes/$oldNoteId/')) {
|
||
// 需要移动的文件
|
||
final fileName = p.basename(imagePath);
|
||
final newPath = p.join(newDir, fileName);
|
||
|
||
await ImagePathHelper.instance.ensureDirExists(newDir);
|
||
|
||
// 检查源文件是否存在
|
||
final sourceFile = File(imagePath);
|
||
if (await sourceFile.exists()) {
|
||
await sourceFile.rename(newPath);
|
||
newPaths.add(newPath);
|
||
}
|
||
} else {
|
||
// 已经在正确位置的文件
|
||
newPaths.add(imagePath);
|
||
}
|
||
}
|
||
|
||
// 删除旧目录
|
||
try {
|
||
await ImagePathHelper.instance.deleteNoteImages(oldNoteId);
|
||
} catch (e) {
|
||
// 忽略删除失败
|
||
}
|
||
|
||
return newPaths;
|
||
}
|
||
|
||
/// 选择图片
|
||
Future<void> _pickImage() async {
|
||
try {
|
||
final XFile? image = await _picker.pickImage(
|
||
source: ImageSource.gallery,
|
||
maxWidth: 1920,
|
||
maxHeight: 1920,
|
||
imageQuality: 85,
|
||
);
|
||
|
||
if (image != null) {
|
||
// 生成唯一的文件名
|
||
final fileName = '${DateTime.now().millisecondsSinceEpoch}.jpg';
|
||
|
||
// 如果是编辑模式，使用现有笔记ID；如果是新建模式，使用临时ID（保存时会替换）
|
||
String noteId;
|
||
if (_isEditing) {
|
||
noteId = widget.note!.id;
|
||
} else {
|
||
// 新建模式：使用已存在的临时ID或生成新的
|
||
noteId = _tempNoteId ?? DateTime.now().millisecondsSinceEpoch.toString();
|
||
_tempNoteId = noteId;
|
||
}
|
||
|
||
// 复制图片到应用目录: images/notes/{noteId}/{fileName}
|
||
final targetDir = await ImagePathHelper.instance.getNoteImagesDir(noteId);
|
||
await ImagePathHelper.instance.ensureDirExists(targetDir);
|
||
final targetPath = p.join(targetDir, fileName);
|
||
|
||
await File(image.path).copy(targetPath);
|
||
|
||
setState(() => _images.add(targetPath));
|
||
}
|
||
} catch (e) {
|
||
ToastUtil.show(context, '选择图片失败: $e');
|
||
}
|
||
}
|
||
|
||
/// 构建图片网格（一行三个）
|
||
Widget _buildImageGrid() {
|
||
return Container(
|
||
width: double.infinity,
|
||
padding: const EdgeInsets.fromLTRB(16, 8, 16, 0),
|
||
child: Wrap(
|
||
spacing: 10,
|
||
runSpacing: 10,
|
||
children: [
|
||
for (int i = 0; i < _images.length; i++) _buildGridImageItem(i),
|
||
_buildAddImageButton(),
|
||
],
|
||
),
|
||
);
|
||
}
|
||
|
||
Widget _buildGridImageItem(int index) {
|
||
final colors = Theme.of(context).colorScheme;
|
||
final size = (MediaQuery.of(context).size.width - 16 * 2 - 10 * 2) / 3;
|
||
return InkWell(
|
||
onTap: () => _showImagePreview(index),
|
||
onLongPress: () => _showDeleteImageDialog(index),
|
||
borderRadius: BorderRadius.circular(10),
|
||
child: Container(
|
||
width: size,
|
||
height: size,
|
||
decoration: BoxDecoration(
|
||
borderRadius: BorderRadius.circular(10),
|
||
border: Border.all(color: colors.outline, width: 0.5),
|
||
),
|
||
clipBehavior: Clip.antiAlias,
|
||
child: FadeInLocalImage(
|
||
path: _images[index],
|
||
fit: BoxFit.cover,
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 添加图片按钮
|
||
Widget _buildAddImageButton() {
|
||
final colors = Theme.of(context).colorScheme;
|
||
final size = (MediaQuery.of(context).size.width - 16 * 2 - 10 * 2) / 3;
|
||
return InkWell(
|
||
onTap: _pickImage,
|
||
borderRadius: BorderRadius.circular(10),
|
||
child: Container(
|
||
width: size,
|
||
height: size,
|
||
decoration: BoxDecoration(
|
||
borderRadius: BorderRadius.circular(10),
|
||
color: colors.surfaceContainerHigh,
|
||
border: Border.all(color: colors.outline, width: 0.5),
|
||
),
|
||
child: Icon(
|
||
Icons.add_photo_alternate_outlined,
|
||
size: 28,
|
||
color: colors.onSurface.withValues(alpha: 0.3),
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 显示图片预览
|
||
void _showImagePreview(int index) {
|
||
showDialog(
|
||
context: context,
|
||
barrierDismissible: true,
|
||
builder: (context) => GestureDetector(
|
||
onTap: () => Navigator.pop(context),
|
||
child: Container(
|
||
color: Colors.black.withValues(alpha: 0.9),
|
||
child: Center(
|
||
child: InteractiveViewer(
|
||
panEnabled: true,
|
||
boundaryMargin: const EdgeInsets.all(20),
|
||
minScale: 0.5,
|
||
maxScale: 4,
|
||
child: FadeInLocalImage(
|
||
path: _images[index],
|
||
fit: BoxFit.contain,
|
||
),
|
||
),
|
||
),
|
||
),
|
||
),
|
||
);
|
||
}
|
||
|
||
/// 显示删除图片确认对话框
|
||
void _showDeleteImageDialog(int index) {
|
||
showDialog(
|
||
context: context,
|
||
builder: (context) {
|
||
final colors = Theme.of(context).colorScheme;
|
||
return AlertDialog(
|
||
backgroundColor: colors.surface,
|
||
elevation: 0,
|
||
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
|
||
title: const Text(
|
||
'确认删除',
|
||
style: TextStyle(
|
||
fontSize: 18,
|
||
fontWeight: FontWeight.w600,
|
||
),
|
||
),
|
||
content: Text(
|
||
'确定要删除这张图片吗？此操作不可恢复。',
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
color: colors.onSurface.withValues(alpha: 0.6),
|
||
height: 1.5,
|
||
),
|
||
),
|
||
actions: [
|
||
TextButton(
|
||
onPressed: () => Navigator.pop(context),
|
||
style: TextButton.styleFrom(
|
||
foregroundColor: colors.onSurface.withValues(alpha: 0.6),
|
||
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
|
||
),
|
||
child: const Text('取消'),
|
||
),
|
||
ElevatedButton(
|
||
onPressed: () {
|
||
setState(() => _images.removeAt(index));
|
||
Navigator.pop(context);
|
||
},
|
||
style: ElevatedButton.styleFrom(
|
||
backgroundColor: colors.error,
|
||
foregroundColor: colors.onError,
|
||
elevation: 0,
|
||
shape: RoundedRectangleBorder(
|
||
borderRadius: BorderRadius.circular(8),
|
||
),
|
||
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
|
||
),
|
||
child: const Text('删除'),
|
||
),
|
||
],
|
||
actionsPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
|
||
);
|
||
},
|
||
);
|
||
}
|
||
}
|